DOOR LOCK AND ELECTRICAL DEVICE

Technical field

[001] The present application relates to door locks of electrical devices, and in particular, to a door lock mountable to a panel of an electrical device.

Related applications

[002] The present application is related to two applications (Chinese Application No. 201710536739.8 and Chinese Application No. 201810482146.2) submitted by the applicant previously, which are incorporated herein by reference.

Background art

[003] It is well known that a door lock can be used to lock a door of an electrical device (such as a washing machine). The door lock is provided with a lock hole, and the door lock is mounted on a panel of the electrical device. As such, when a lock hook mounted on the door of the electrical device is inserted into the lock hole, a locking mechanism in the door lock can lock a door hook, thus locking the electrical device on the panel of the electrical device.

[004] The present application provides a door lock that is reliable in mounting and convenient for mounting and dismounting.

Summary

[005] One objective of the present application is to provide a door lock that can be mounted without a positioning hole provided on a front panel of an electrical device or securing with a screw, so as to ensure the precision and stability as well as assembly aesthetics. A specific technical solution is provided as follows:

[006] In a first aspect of the present application, a door lock is provided, including a door hook hole body including a top as well as a first sidewall and a second sidewall that are disposed oppositely, the first sidewall and the second sidewall being formed by extending downward beneath the top: a first, clamping edge and a second clamping edge extending out of the first sidewall and the second sidewall respectively from the top of the door hook hole body; a groove disposed on a lower surface of the first clamping edge; and a locking slider including a lock head, the locking shder being disposed at a side of the first, sidewall, and the locking slider, when moving vertically, being capable of driving the lock head to stretch into or retract from the groove.

[007] According to the door lock in the first aspect of the present application, an inner sidewall of the groove is aligned with the first sidewall; and the groove has a width H capable of accommodating the lock head.

[008] According to the door lock in the first aspect of the present application, the door iock further includes a blocking surface extending out horizontally at a distal end of the first sidewall.

[009] According to the door iock in the first aspect of the present application, the door iock further includes a chute support disposed at a lower part of the first sidewall and extending horizontally out of the first sidewall, a guide rail being disposed at an outer side of the chute support, wherein the locking slider includes a lock tail extending downward, a chute being disposed on an inner surface of the lock tail; and the chute on the locking slider and the guide rail on the chute support slide with respect to each other to guide the vertical movement of the locking slider.

[0010] According to the door lock in the first aspect of the present application, the blocking surface is disposed at the top of the chute support.

[001 1] According to the door lock in the first aspect of the present application, the door lock further includes: an elastic bias component, wherein a cavity is disposed on the lock head; one end of the elastic bias component is mounted in the cavity, and the other end of the elastic bias component is mounted at the bottom of the chute support; and the elastic bias component is used to provide an elastic bias force for pushing the lock head such that the lock head is inserted into the groove.

[0012] According to the door lock in the first aspect of the present application, the door iock further includes: an elastic bias component wherein a cavity is disposed on the lock head; a counter-bored hole is disposed on the blocking surface; one end of the elastic bias component is mounted in the cavity, and the other end of the elastic bias component is mounted in the counter-bored hole; and the elastic bias component is used to provide an elastic bias force for pushing the lock head such that the lock head is inserted into the groove.

[0013] According to the door lock in the first aspect of the present application, the door lock further includes: an elastic plastic arm, wherein a first end of the elastic plastic arm is connected to a lower end of the lock tail; and a second end of the elastic plastic arm is connected to a lower surface of the blocking surface.

[0014] According to the door lock in the first aspect of the present application, a locking piece handle is disposed at an outer side of the lock tail, the locking piece handle enabling an operator to pull the lock head out of the groove from outside of the door Sock.

[0015] According to the door lock in the first aspect of the present application, the door hook hole body is rectangular; and the first clamping edge and the second clamping edge are disposed at two sides of the door hook hole body in the length direction.

[0016] According to the door lock in the first aspect of the present application, the door lock further includes: an operating handle in contact with or connected to the bottom of the locking slider, used to move the locking slider when an acting force is applied to the operating handle.

[0017] According to the door lock in the first aspect of the present application, the locking slider is disposed vertically, the operating handle is disposed horizontally, and the locking slider is disposed on an upper surface of the operating handle.

[0018] According to the door lock in the first aspect of the present application, a proximal end of the operating handle is rotatably fixed to a shell of the door lock, the operating handle extends from the shell, and a distal end of the operating handle is a free end,

[0019] .According to the door lock in the first aspect of the present application, the locking slider is configured such that the top of the locking slider keeps a distance away from the top of the groove before the door lock is mounted. [0020] According to the door lock in the first aspect of the present application, the locking slider is configured such that the groove accommodates the lock head before the door lock is mounted.

[0021] in a second aspect of the present application, an electrical device is provided, including a panel, a mounting hole being disposed on the panel, wherein the electrical device includes: a door lock, the door lock including a door hook hole body including a top as well as a first sidewall and a second sidewall that are disposed oppositely, the first sidewall and the second sidewall being formed by extending downward beneath the top: a first clamping edge and a second clamping edge extending out of the first sidewall and the second sidewall respectively from the top of the door hook hole body; a groove disposed on a lower surface of the first clamping edge; and a locking slider including a lock head, the locking slider being disposed at a side of the first sidewall, and the locking slider, when moving vertically, being capable of driving the lock head to stretch into or retract from the groove; and the door hook hole body of the door lock is mounted in the mounting hole.

[0022] According to the electrical device in the second aspect of the present application, the mounting hole is provided with an indicating hole at one side near the second clamping edge; and the indicating hole is used to indicate a fixing state of the door lock, wherein the second clamping edge covers the indicating hole when the door lock is completely fixed in the mounting hole.

[0023] According to the electrical device in the second aspect of the present application, the mounting hole is provided with an indicating groove at one side near the second clamping edge; and the indicating groove is used to indicate a fixing state of the door lock, wherein the second clamping edge covers the indicating groove when the door lock is completely fixed in the mounting hole.

[0024] According to the electrical device in the second aspect of the present application, the mounting hole is provided with an indicating mark at one side near the second clamping edge; and the indicating mark is used to indicate a fixing state of the door lock, wherein the second clampsng edge covers the indicating mark when the door lock is completely fixed in the mounting hole. [0025] According to the electrical device in the second aspect of the present application, the electrical device is a washing machine.

[0026] According to the door lock and the electrical device of the present application, a first clamping edge and a second clamping edge extend outward at two opposite sides of an edge of a door hook hole of the door lock, and a movable locking mechanism is disposed under the first clamping edge. After the first clamping edge and the second clamping edge are penetrated into a mounting hole on an electrical panel, a base of the door lock can fix the door lock in the mounting hole when the locking mechanism is moved to a locking position, and therefore the mounting precision is high and stability is desirable. It is aesthetic after assembling that only one mounting hole, without additionally opening any other holes, is opened on the electrical panel. Moreover, according to the electrical device of the present application, an indicating hole (or groove) is disposed at the edge of the mounting hole, which is invisible as being shielded by the second clamping edge when the door lock is completely fixed in the mounting hole and is visible as not being shielded by the second edge when the door lock is not completely fixed in the mounting hole, Therefore, a fixing state of the door lock can be indicated. Thus, the electrical device is simple in structure and smart in design.

Brief description of the drawings

[0027] FIG. 1 is a three-dimensional structural diagram of an embodiment of a door lock according to the present application;

[0028] FIG, 1 B is an exploded view of an embodiment of a door lock according to the present application;

[0029] FIG. 1C is a sectional view of the door lock shown in FIG. 1 A taken along a section line A~A:

[0030] FIG. ID is a three-dimensional structural diagram of a reverse side of a shell shown in FIG. IB;

[0031 ] FIG. 2A is a three-dimensional structural diagram of a locking slider shown in FIG. lA; [0032] FIG. 2B is a sectional view of the locking slider shown in FIG, 1A;

[0033] FIG, 3A is a first embodiment of the door lock shown in FIG. 1 A;

[0034] FIG. 3B is a second embodiment of the door lock shown in FIG. 1 A;

[0035] FIG, 3C is a third embodiment of the door lock shown in FIG. 1 A:

[0036] FIG. 4A to FIG. 4C are schematic state diagrams in a step of mounting the door lock shown in FIG. 1A to an electrical device panel:

[0037] FIG. 5A and FIG. SB are schematic structural diagrams of two embodiments of a mounting hole on a mounting panel of a washing machine according to the present application;

[0038] FIG. 6A and FIG, 6B are schematic diagrams of a working process of an indicating hole on a mounting panel of a washing machine according to the present application;

[0039] FIG. 7 A is a three-dimensional structural diagram of another embodiment of a door lock according to the present application;

[0040] FIG. 7B is a top view of the door lock shown in FIG. 7A;

[0041] FIG. 7C is a partial sectional view of the door lock shown in FIG. 7A;

[0042] FIG. 7D is a left view of the door lock shown in FIG. 7A when an operating handle is not pulled;

[0043] FIG. 7E is a left view of the door iock shown in FIG. 7A when an operating handle is pulled downward;

[0044] FIG. 8A to FIG. 8C are schematic state diagrams in a step of mounting the door lock shown in FIG. 7 A to an electrical device panel;

[0045] FIG. 9A is a partial sectional view of another embodiment of the door iock shown in FIG. 7A;

[0046] FIG. 9B is a left view of the door Sock shown in FIG. 9A when an operating handle is not pushed;

[0047] FIG. 9C is a left view of the door lock shown in FIG. 9A when an operating handle is pushed upward; and [0048] FIG. 10A to FIG, IOC are schematic state diagrams in a step of mounting the door lock shown in FIG. 9A to an electrical device panel.

Detailed descri tion

[0049] Various specific implementation manners of the present application will be described in the following with reference to the accompanying drawings constituting a part of the specification. It should be understood that although terms indicating directions are used in the present application, such as "front", "back", "up", "down", "left", "right", and other terms describing orientations of various exemplar)' structural parts and elements of the present application, these terms are used merely for ease of illustration and are determined based on exemplary orientations displayed in the accompanying drawings. The embodiments disclosed in the present application can be set according to different directions, and therefore, these terms indicating directions are merely used for illustration and should not he construed as limitations. Where possible, the same or similar reference numerals used in the present application refer to the same component.

[0050] FIG. 5 A is a three-dimensional structural diagram of a door lock 100 according to the present application. As shown in FIG. 1A, the door lock 100 includes a door lock component part 130 located at a rear portion and a door lock base part 1 10 located at a front portion. The door lock component part 130 accommodates an execution component for locking and releasing an electrical device door, which is not described in detail in the present application. In the present application, the structure of the door lock base part 1 10 will be described in detail to illustrate how to mount the door lock 100 to a panel of the electrical device through the structure of the door lock base part 1 10.

[0051] In the embodiment shown in FIG, 1A, the door lock base part 1 10 includes a rectangular door hook hole body 101, and the door hook hole body 101 is provided with a door hook hole 102. Definitely, the door hook hole body 101 may also be of another shape, such as square. The door hook hole body 101 has a top 109, and clamping edges 103.1, 103.2 (a left clamping edge or first clamping edge 103.1 ; a right clamping edge or second clamping edge 103.2) that are disposed oppositely, extending respectively to outer sides from the edge of top 109 and being symmetric to a width direction thereof (or a horizontal direction). According to the embodiment of the present application, the door lock 100 is mounted in a mounting hole 452 or a panel 450 of the electrical device using the clamping edges 103.1, 103.2 on the door hook hole body 101 (see FIG. 6A and FIG. 6B), As such, when a lock hook (not shown) mounted on the electrical device door is inserted into the door hook hole 102, a locking execution component (not shown) in the door lock component part 130 can lock the door hook, such that an electrical door (not shown) can be locked on the pane! 450 of the electrical device.

[0052] As shown in FIG. 1A, the door lock 100 further includes a locking slider (or locking mechanism) 120. The locking slider 120 is disposed at the left side of the door lock base part 3 10 and located under the left clamping edge 103.1. The locking slider 120 can move up and down along a vertical direction (i.e., a direction perpendicular to a body of the door lock 100). During mounting, after the clamping edges 103.1, 103.2 on the door hook hole body 101 passes through the mounting hole 452 on the panel 450, the locking slider 120 moves upward to be wedged between a left edge 502 of the mounting hole 452 and the left sidewal! 108.1 of the door hook hole body 101 (see FIG. 4C), such that the door lock 100 is fixed on the panel 450 of the electrical device.

[0053] FIG. I B is an exploded view of the door lock 100 according to the present application and is used for showing components in the door hook hole body 101 , the locking slider 120 and the door lock base part 1 10 and relationships between the components in more detail. As shown in FIG. IB, the door lock 100 includes a shei! 150. In FIG. I B, a base 1 14 is separated from the shell 350 to display the relationship between the components more clearly. The locking slider 120 is provided with a blocking surface 1 17 at a proximal end of a lock head 133. The door lock base part 3 30 includes the base 1 14, and a chute support 1 15 is disposed at the left side of the 1 14 (i.e., the left side of the outer wall 107). A guide rail 1 16.3, 1 16.2 is disposed at an outer side of the chute support 1 15, and the Socking slider 120 slides vertically along the guide rail 1 16.1, 1 36.2. The top of the chute support 1 15 is provided with a blocking surface 1 17. When the blocking surface 1 17 on the chute support 1 5 is in contact with the blocking surface 1 17 on the locking slider 120, the locking slider 120 can be stopped from moving downward on the chute support 1 15. A cam 177 is mounted on the base 1 14, and when a striker (not shown) on the door of the electrical device enters the door hook hole 102, the cam 177 can keep the striker at a fixed position. The base 1 14 is provided with four ciips 1 19.1, 1 19.2, 1 19.3, 1 19,4. When the base 1 14 is inserted from the lower portion of the door hook hole body 101 , the four clips 1 19.1, 1 19.2, 1 19.3, 1 19,4 fix the base 1 14 to the door hook hole body 101 ,

[0054] FIG. 1C is a sectional view of the door lock 100 shown in FIG. I A taken along a section line A-A. In the sectional view, the locking slider 120 is moved from the door hook hole body 101 , to better show the structure of the door hook hole body 101. As shown in FIG. 1 C, the door hook hole body 101 includes a top 109, an outer wail 107 and a right sidewall 108,2 (a second sidewal!) extend from beneath the top 109, and clamping edges 103.1. 103.2 extend out of the outer wall 107 and the right sidewall 108,2 respectively from the top 109 of the door hook hole body 101. The outer wall 107 is provided with a groove 1 1 1, and the bottom of the groove i l l is a left sidewall 108.1 (first sidewall). At a left distal end of the outer wall 107, a blocking surface 1 17 extends from the base 1 14 to the outer side of the left sidewall 108.1 As an embodiment, the blocking surface 1 17 is provided with a protrusion 1 18 used to mount a spring 129 for providing an elastic bias force. A groove 131 is disposed on the back (or lower surface) of the top of the left clamping edge 103.1. An inner sidewall 132 of the groove 131 is aligned (or lined up) with the left sidewall 108.1 , As such, the lock head 133 of the locking slider 120 can move vertically, against the left sidewall 108.1, between the blocking surface 1 17 and the groove 131.

[0055] FIG. I D is a three-dimensional structural diagram of a reverse side of the shell 150 shown in FIG, I B and is used for showing a relationship between the groove 1 1 1 and the outer wail 107.

[0056] FIG, 2A and FIG. 2B are respectively a three-dimensional structural diagram and a sectional view of the locking slider 120 shown in FIG. 1 A and are used for showing a more detailed structure of the locking slider 120, As shown in FIG, 2A and FIG. 2B _S the locking slider 120 includes a lock head 1 33 located at an upper part, a lock, tail 223 located at a lower part and extending to a side part, and a loeking piece handle 210 extending on the lock tail 223 to the side part. During mounting of the door lock 100, an operator pulls the locking piece handle 210 to pull the loeking slider 120 downward, such that the locking slider 120 is moved downward along the vertical direction to a releasing position. The lock head 133 is provided with a protruding portion 222. Definitely, the lock head 133 may also he flat and does not have the protruding portion 222. Two sides of the inner surface of the lock tail 223 are provided with dovetail slots 231 (chutes), for guiding the locking slider 120 when moving vertically, such that the Sock head 333 can he inserted into the groove 131 accurately. A proximal end part of the lock head 133 is provided with a blocking surface 1 17, the lock head 133 is provided with a cylindrical cavity 208, and an inlet 209 of the cavity 208 is disposed on the blocking surface 1 17. The back of the lock head 133 is provided with a slope 232. After the clamping edge 103.1, 103.2 on the door hook hole body 101 passes through the mounting hole 452 on the panel 450, the slope 232 enables the lock head 133 to be easily squeezed into the groove 331 of the clamping edge 103.1.

[0057] FIG. 3 A to FIG. 3C are sectional views of the door lock 100 shown in FIG. 1 A taken along a direction A-A and are used tor showing relationships between the door hook hole body 101, the base 1 14, and the locking slider 120. More specifically, FIG. 3 A is a first embodiment of the door lock 100 shown in FIG. 1 A, wherein a spring 129 is the elastic bias component enabling the locking slider 120 to move upward, and the blocking surface 1 17 is provided with a protrusion 1 18 to assemble the spring 129. FIG. 3B is a second embodiment of the door lock 100 shown in FIG. 1 A, wherein an elastic plastic arm 308 is the elastic bias component enabling the locking siider 120 to mo ve upward. FIG. 3C is a third embodiment of the door lock 100 shown in FIG. 1A, wherein the blocking surface 1 17 is provided with a counter-bored hole 318 to assemble the spring 129.

[0058] As shown in FIG. 3A, the base 1 14 is clamped to the door hook hole body 101 with four clips 1 39.1 , 1 19.2, 1 39.3, 1 19.4. The locking slider 120 is disposed on the left sidewali 108.1 of the door hook hole body 103 and at the left side of the chute support 1 15 of the base 1 14. The groove i 31 on the reverse side of the left clamping edge 103.1 has a width H, and the width of the groove 131 is equal to or slightly greater than the width of the lock head 133, being suitable for accommodating the lock head 133. A blocking surface 1 17 is located under the groove 131 and at a distal end of the left side all 108.1 and extends from the base 1 14 to the outer side of the left sidewail 108.1. The blocking surface 1 17 is provided with the protrusion 1 18 to mount a spring 129 providing an elastic bias force. A groove 131 is disposed on the back (or !ower surface) of the top of the left clamping edge 103.3. An inner sidewall 132 of the groove 133 is aligned (or lined up) with the left sidewall 108.1. As such, the lock head 133 of the locking slider 120 can move vertically, against the left sidewall 108.1 , between the blocking surface 1 17 and the groove 131, such that the lock head 1 3 of the locking slider 120 can be inserted into or retract from the groove 131. When the lock head 133 is outside the groove 131, the locking slider 320 is at a releasing position. In this case, the length affecting the mounting hole 452 on the panel 450 is a distance between the left sidewall 108.1 and the right sidewall 108.2 of the door hook hole body 301, i.e., a first distance LI (see FIG. 4B). Because the first distance L3 is less enough than the length of the mounting hole 452. the clamping edge 103.1 , 103.2 on the door hook hole body 101 can enter or exit from the mounting hole 452. When the lock head 133 is inserted into the groove 131, the locking slider 120 is at a locking position. In this case, the length affecting the mounting hole 452 on the panel 450 is a distance between the left sidewail 308.1 and the right sidewall 108.2 of the door hook hole body 101 plus the width of the lock head 133, i.e., a second distance L2 (L2 = L3 width of the lock head 133) (see FIG. 4C). Because the second distance L2 is just the length of the mounting hole 452 (or slightly less than the length of the mounting hole 452), the door hook hole body 301 and the lock head 133 cooperate such that after the door hook hole body 101 is inserted into the mounting hole 452, the left sidewall 333 of the lock head 133 and the right sidewall 108.2 of the door hook hole body 101 press against two edges 502, 504 of the mounting hole (see FIG. 5A and FSG. SB), As a result, the clamping edge 103.1, 303.2 on the door hook hole body 101 cannot exit from the mounting hole 452, thus fixing the door Sock 100 on the panel 450.

[0059] After the door lock 100 is mounted to the pane! of the electrical device, the locking slider 120 needs to be kept at a locking position, and therefore, the lock head 133 of the locking slider 120 needs to be pressed and kept in the groove 131 by the elastic bias component, in the embodiment as shown in FIG. 3A, the elastic bias component is the spring 129. The lock head 133 of the locking slider 120 is provided with a cavity 208 in which the spring 129 is accommodated. The upper end of the spring 129 presses against the top end of the ca v ity 208, and the lower end of the spring 129 presses against the blocking surface ί 17, so as to provide an elastic bias force for the locking slider 120 to move upward, thus pressing the locking slider 120 into the groove 131. The blocking surface 1 17 is provided with a protrusion 1 18 which stretches into the spring 129 to limit the horizontal movement of the spring 129. In the absence of an externa! force, the locking slider 120 will be kept in the groove 131, i.e., the state shown in FIG. 4C.

[0060] Before the door lock 100 is mounted to the panel 450, the locking slider 120 first needs to be moved to the releasing position. The lock tail 223 of the locking slider 120 is provided with a horizontal Socking piece handle 210. Under an external force (e.g., a hand of the operator), the locking piece handle 210 overcomes the elastic bias force of the spring 129 to pull the locking slider 120 to the releasing position, i.e., the state shown in FIG. 3A.

[0061] As described above, FIG, 3B is a second embodiment of the door lock 100 shown in FIG. 1A. Most components in the embodiment shown in FIG. 3B are the same as those in the embodiment of FIG. 3 A. The embodiment in FIG. 3B differs from the embodiment in FIG. 3 A in that: the elastic bias component is an elastic plastic arm 308 instead of the spring 129. A first end of the elastic plastic arm 308 is connected to a lower end of the lock tail 223, and a second end of the elastic plastic arm 308 is connected to a lower end of the base 1 14 or is connected to a lower surface of the blocking surface 1 1 7. The elastic plastic arm 308 provides an elastic bias force for pushing the locking slides- 120 to a locking position, i.e., the elastic bias force that pushes the locking slider 120 upward in the figure.

[0062] As described above, FIG. 3C is a third embodiment of the door lock 100 shown in FIG. I A. Most components in the eirsbodimeni shown in FiG. 3C are the same as those in the embodiment of FIG. 3A. The embodiment in FIG. 3C differs from the embodiment in FIG, 3A in that: the blocking surface 1 17 is not provided with the protrusion 1 18; instead, a counter-bored hole 318 is disposed on the blocking surface 1 17. In FIG. 3C, the upper end of the spring 129 presses against the top end of the cavity 208, and the lower end of the spring 129 presses against the counter-bored hole 31 8, to provide an elastic bias force tor the locking siider 120 to move upward, so as to push the locking slider 120 into the groove 131.

[0063] FIG. 4 A, FIG. 4B and FIG. 4C show steps of mounting the door lock 100 to the panel 450 of the electrical device as follows:

[0064] Step 1 : As shown in FIG. 4A, a downward force is applied to the locking piece handle 210 of the locking siider 120 to move the locking slider 120 downward to the releasing position (as shown by an arrow 401). The door hook hole body 101 is aligned with the mounting hole 452 on the panel 450, and the door lock 100 is tilted by a certain angle such that the left clamping edge

103.1 on the door hook hole body 101 first stretches over the mounting hole 452. In this case, the left clamping edge 103.3 is clamped above a left edge 502 of the mounting hole 452.

[0065] Step 2: As shown in FIG. 4B, the door lock 100 is moved leftward (as shown by an arrow 402), such that the left edge 502 in the mounting hole 452 retracts to the position of the groove 131. In this case, the downward force applied to the locking piece handle 210 is kept, and the locking slider 120 is still at the releasing position. A first distance LI is kept between the left sidewail 108.1 and the right sidewall 108,2 of the door hook hole body 101 . The first distance LI is less than the length of the mounting hole 452. In this case, the right edge 504 of the mounting hole 452 is out of the edge top of the right clamping edge 103.2; therefore, the right clamping edge

103.2 can be pushed over the right edge 504 of the mounting hole. [0066] Step 3: As shown in FIG. 4C, the door lock 100 is moved righiward (as shown by an arrow 403), such that the right clamping edge 103,2 is clamped on the right edge 504 of the mounting hole 452. In this case, the space of the groove 131 at the left side is released, in this case, the externa! force applied to the locking piece handle 210 is released, and the locking slider 120 is quickly inserted into the groove 131 under the effect of the spring 129, and clatters such that the operator knows that it is mounted in place. After the locking slider 120 is inserted into the groove 131 , a second distance L2 is formed by the distance between the left sidewal! 108.1 and right sidewall 108.2 of the door hook hole body 101 plus the width of the lock head 133. The second distance L2 is the same as the length of the mounting hole 452 (or slightly less than the length of the mounting hole 452), such that the door lock 100 cannot move in the length direction of the mounting hole 452. The width at two sides of the width of the door hook hole body 101 is the same as the width of the mounting bole 452, so that the door lock 100 cannot move in the width direction of the mounting hole 452. Moreover, the clamping edges 103.1 , 103.2 on the door hook hole body 101 are located above the mounting hole 452, and a distance between edge tops thereof is greater than the length of the mounting hole 452, such that the door lock 100 cannot escape from the mounting hole 450. Therefore, the door lock 100 cannot move in left-right, front-hack and up- down directions of the mounting hole 452, that is, the door lock 100 is secured in the mounting- hole 452.

[0067] FIG. 5A and FIG. 5B are schematic structural diagrams of two embodiments of the mounting hole 452 on a mounting pane! of a washing machine according to the present application. As can be known from the state shown in FIG. 4C that when the door lock 100 is completely fixed in the mounting hole 452, the right clamping edge 103,2 is definitely clamped on the right edge 504 of the mounting hole 452. Because the right clamping edge 103.2 has a certain span, it will cover a part of the area of the right edge 504.

[0068] Therefore, in the embodiment shown in FIG. 5A, to facilitate displaying whether the door lock 100 is completely secured in the mounting hole 452, the inventor disposes an indicating hole 51 1 on the right edge 504 of the mounting hole 452. When the door lock ί 00 is completely secured in the mounting hole 452, the indicating hole 51 3 will be covered by the right clamping edge 103.2, thus being invisible. In contrast, when the door lock 100 is not correctly or compieteiy mounted to the mounting hole 452, the indicating hole 51 1 will be visible. Therefore, the indicating hole 1 1 can indicate a mounting state of the door lock 100.

[0069] In the embodiment shown in FSG. 5B, the indicating hole 51 1 is disposed as an indicating groove 5 12. The indicating hole 51 1 is not in communication with the mounting hole 452, while the indicating groove 512 is in communication with the mounting hole 452.

[0070] In fact, the indicating hole 53 1 and the indicating groove 512 may have various alternative solutions. For example, indicating regions in different colors are painted by using paint or pigment. Alternatively, indicating marks or traces marked in other manners are all available. Such indicating marks have the same function, that is, the indicating mark is covered by the right clamping edge 103,2 when the door lock 100 is mounted correctly and completely.

[0071] FIG. 6A and FIG. 6B are schematic diagrams of a working process of an indicating hole on a mounting panel of a washing machine according to the present application. FIG. 6A shows that in Step 2 as shown in FIG. 4B, the right clamping edge 103.2 is pushed over the right edge 502 of the mounting hole 452, but at this point, the locking slider 120 does not enter the locking position. The door lock 100 is still in a loose state and can be removed from the mounting hole 452. In this case, the indicating groove 512 is visible (so does the indicating hole 51 1), indicating that the door lock 100 is not compieteiy in place or mounted correctly.

[0072] FIG, 6B shows that in Step 3 as shown in FIG. 4C, the door lock 100 is moved downward (moved rightward in FIG. 4C), the left edge 502 of the mounting hole 452 makes room for the groove 531, and the locking slider 120 is inserted into the groove 131 automatically by the elastic component. The door lock 100 is then secured in the mounting hole 452, When the locking slider 120 is not pulled to the releasing position, the door lock 100 cannot be removed in front of the panel 450. In this ease, the indicating groove 512 is covered by the right clamping edge 103,2 and is invisible, indicating that the door lock 100 has been completely or correctly mounted in the mounting hole 452.

[0073] FIG. 7 A and FIG. 7B are respectively a three-dimensional structural diagram and a top view of another embodiment of a door lock according to the present application. As shown in FIG. 7A and FIG. 7B, a door lock 700 includes a door lock component part 730 on the right and a door lock base past 710 on the left. The door lock component part 730 accommodates an execution component for locking and releasing an electrical device door. The door lock base part 710 includes a rectangular door hook hole body 70 L The door hook hole body 701 is provided with a door hook hole 702. Definitely, the door hook hole body 701 may also be of another shape, such as square. The door hook hole body 70 S has a top 709, and clamping edges 703.1 , 703.2 (a left clamping edge or first clamping edge 703.3 ; a right clamping edge or second clamping edge 703.2) that are disposed oppositely, extending respectively to outer sides from the edge of top 709 and being symmetric to a width direction thereof (or a horizontal direction). The door lock 700 includes a shell 750. The shell 750 includes an operating handle 761 . A proximal end 763 of the operating handle 761 extends horizontally from the rear part of the shell 150 and is rotatably fixed on the shell 150. A distal end 765 of the operating handle 7 3 is a free end. The distal end 765 is provided with a recess 767 to facilitate the operator to puH the operating handle 761 . An upper surface of the operating handle 761 is provided with a vertically disposed locking slider 720. The locking slider 720 includes a lock head 733 located at the upper portion thereof (see FIG. 7C). The operating handle 761 can rotate with the proximal end 763 as a rotation center. When the operating handle 761 rotates, the locking slider 720 can be driven to move substantially along a vertical direction. During mounting of the door lock 700, the operator pulls the operating handle 763 to pull the locking slider 720 downward, such that the locking slide 720 moves downward substantially along the vertical direction to the reieasing position.

[0074] FIG, 7C is a partial section view of the door lock 700 shown in FIG. 7A, for better showing the structure of the door hook hole body 701. As shown in FIG. 7C, the left sidewal! 708.1 (the first sidewali) and the right sidewaSl 708.2 (the second sidewall) extend from beneath the top 709 of the door hook hole body 701. Clamping edges 703.1 , 703,2 respectively extend out of the ieft sidewall 708, 1 and the right sidewall 708.2 from the top 709 of the door hook hole body 701. A groove 731 is disposed on the back (or lower surface) of the top of the left clamping edge 703.1 , for accommodating a lock head 733 of the locking slider 720. When the lock head 733 is outside the groove 731, the locking slider 720 is located at the releasing position. In this case, the length that affects the mounting hole 452 on the panel 450 is a distance between the left sidewall 708.1 and right sidewaSl 708.2 of the door hook hole body 101 , i.e., a first distance LI (see FIG. 8B). Because the first distance L I is less enough than the length of the mounting hole 452. the clamping edges 703.1, 703.2 on the door hook hole body 701 can enter or exit from the mounting hole 452. When the lock head 733 is inserted into the groove 731 , the locking slider 720 is located at the locking position, in this case, the length that affects the mounting hole 452 on the panel 450 is the distance between the left sidewall 708.1 and right sidewall 708.2 of the door hook hole body 701 plus the width of the lock head 733, i.e., a second distance L2 (L2 = LI + width of the lock head 733) (see FIG. 8C). Because the second distance L2 is just the length of the mounting hole 452 (or slightly less than the length of the mounting hole 452), the door hook hole body 701 and the lock head 733 cooperate such that after the door hook hole body 701 is inserted into the mounting hole 452, the right sidewall 708.2 of the door hook hole body 701 and the ieft sidewall of the lock head 733 press against two edges 502,504 on the mounting hole (see FiG. 5 A and FIG. 5B). As a result, the clamping edge 103.1, 303.2 on the door hook hole body 703 cannot exit from the mounting hole 452, thus fixing the door lock 700 on the panel 450.

[0075] FiG. 7D and 7E are left views of the door lock 700 shown in FIG. 7A, respectively showing positions of the operating handle 761 when the operating handle 761 is not pulled and is pulled. As shown in FIG. 7D, when the operating handle 761 is not pulled (i.e., when no external force is applied to the operating handle 761 ), the lock head 733 is accommodated in the groove 731. As shown in FIG, 7E, when the operating handle 761 is pulled (i.e., when a downward force is applied to the recess 767 on the operating handle 761), the operating handle 761 can rotate about its proximal end 763 and move the locking slider 720 substantially downward to the releasing position (as shown by an arrow 801), When the operator releases the operating handle 761 (i.e., no longer applies a force to the operating handle 761), the operating handle 761 can restore to the position shown in FIG. 7D, i.e., the lock head 733 is accommodated in the groove 731 again. As an example, the operating handle 761 can be made of an elastic material (such as plastic), such that the operating handle 761 is elastic, and can be restored from the releasing position to the position in which the lock head 733 is accommodated in the groove 731.

[0076] FIG. SA to FIG. 8C show steps of mounting the door lock shown in FIG. 7A to the panel 450 of the electrical device as follows:

[0077] Step 1 : As shown in FIG. 8A, a downward force is applied to the recess 767 of the operating handle 761 to move the locking slider 720 downward to the releasing position (as shown by the arrow 801). The door hook hole body 701 is aligned with the mounting hole 452 on the panel 450 (the panel 450 and the mounting hole 452 are the same as those shown in FIG. 5A to FIG, 5B), and the door lock 700 is tilted by a certain angle such that the left clamping edge 703.3 on the door hook hole body 701 first stretches over the mounting hole 452. In this case, the left clamping edge 703.1 is clamped above the left edge 502 of the mounting hole 452,

[0078] Step 2: As shown in FIG. 8B, the door lock 700 is moved leftward (as shown by an arro 802), such that the left edge 502 in the mounting hole 452 retracts to the position of the groove 731. In this case, the downward force applied to the operating handle 763 is kept, and the locking slider 720 is still at the releasing position. A first distance LI is kept between the left ssdewall 708, 1 and the right sidewail 708.2 of the door hook hole body 701 , The first distance LI is less than the length of the mounting hole 452. In this case, the right edge 504 of the mounting hole 452 is out of the edge top of the right clamping edge 703.2; therefore, the right clamping edge 703.2 can be pushed over the right edge 504 of the mounting hole. [0079] Step 3: As shown in FIG. 8C, the door lock 700 is moved rightward (as shown by an arrow 803), such that the right clamping edge 703.2 is clamped on the right edge 504 of the mounting hole 452. In this case, the space of the groove 731 at the left side is released. In this case, the externa! force applied to the operating handle 761 is released, the locking slider 720 on the operating handle 761 moves upward, and the lock head 733 of the locking slider 720 is inserted into the groove 731 and clatters such that the operator knows that it is mounted in place. After the locking slider 720 is inserted into the groove 731 , a second distance L2 is formed by the distance between the left sidewall 708.1 and right sidewall 708.2 of the door hook hole body 701 plus the width of the lock head 733. The second distance L2 is the same as the length of the mounting hole 452 (or slightly less than the length of the mounting hole 452), such that the door lock 700 cannot move in the length direction of the mounting hole 452. The width at two sides of the width of the door hook hole body 701 is the same as the width of the mounting hole 452, so that the door lock 700 cannot move in the width direction of the mounting hole 452. Moreover, the clamping edges 703.1 , 703.2 on the door hook hole body 701 are located above the mounting hole 452, and a distance between edge tops thereof is greater than the length of the mounting hole 452, such that the door lock 700 cannot escape from the mounting hole 450. Therefore, the door lock 700 cannot move in left-right, front-back and up-down directions of the mounting hole 452, that is, the door lock 700 is secured in the mounting hole 452.

[0080] FIG. 9 A is a partial sectional view of another embodiment of the door lock as shown in FIG. 7A, for better showing the structure of the lock head 733. Most components shown in FIG. 9A are the same as those shown in FIG. 7A. The embodiment in FIG. 9A differs from the embodiment in FIG, 7A in that: the lock head 733 includes an extension part 913 extending horizontally outward from the lock head 733, and the lower surface of the extension part 913 forms a recess 920 with the lock head 733. Moreover, when the operating handle 761 is not pushed {i.e., no external force is applied to the operating handle 761), the top of the locking slider 720 on the operating handle 761 keeps a distance D (D is greater than zero) away from the top of the groove 731, and is not attached to the top of the groove 731. When the lock head 733 is located in the groove 733 , the locking slider 720 is at the releasing position, In this case, the length that affects the mounting hole 452 on the panel 450 is a distance between the left side ail of the locking slider 720 and the right sidewail 308,2 of the door hook hole body 701, i.e., a third distance L3 (see FIG, 10B). Because the third distance 1,3 is less enough than the length of the mounting hole 452, the clamping edges 703.3, 703.2 and the locking slider 720 on the door hook hole body 703 can enter or exit from the mounting hole 452. When the lock head 733 is outside the groove 131, the locking slider 720 is located at the locking position. In this case, the length that affects the mounting hole 452 on the panel 450 is the distance between the left sidewail 708.1 and right sidewail 708.2 of the door hook hole body 701 plus a distance between the width of the lock head 733 of the locking slider 720 and the width of the extension part 913 (i.e., a distance between a left sidewail of the extension part 913 to the right sidewail 708.2 of the door hook hole body 703), i.e., a fourth distance L4 (L4 = Li + width of the lock head 733 + width of the extension part 913) (see FIG. S 0C). Because the fourth distance L4 is just the length of the mounting hole 452 (or slightly less than the length of the mounting hole 452). the door hook hole body 703 and the lock head 733 cooperate such that after the door hook hole body 701 and the lock hear 733 are inserted into the mounting hole 452, the left edge of the extension part 913 and the right sidewail 708.2 of the door hook hole body 701 press against two edges 502, 504 of the mounting hole (see FIG. 5A and FIG. 5B). As a result, the clamping edge 703.1 , 703.2 on the door hook hole body 701 cannot exit from the mounting hole 452, thus fixing the door lock 700 on the panel 450,

[0083] FIG. 9B and 9C are left views of the door lock 700 shown in FIG. 9A, respectively showing posi tions of the operating handle 761 when the operating handle 761 is not pushed and is pushed. As shown in FIG. 9B, when the operating handle 761 is not pushed (i.e., when no external force is applied to the operating handle 761), the distance D can be kept between the top of the locking slider 720 on the operating handle 761 and the top of the groove 731. As shown in FIG. 9C, when the operating handle 761 is pushed (i.e., when an upward force is applied to the distal end 765 the operating handle 761 ), the operating handle 76 rotates about its proximal end 763 and moves the locking slider 720 substantially upward to the releasing position (as shown by an arrow 1001). When the operator releases the operating handle 761 (i.e., no longer applies a force to the operating handle 761), the operating handle 761 can restore to the position shown in F G. 9B, i.e., the distance D is kept between the top of the locking slider 720 and the top of the groove 731 again. As an example, the operating handle 761 can be made of an elastic material (such as plastic), such that the operating handle 761 is elastic, and can be restored from the releasing position to the position where the distance D is kept between the top of the locking slider 720 and the top of the groove 731 .

[0082] FIG. 10A, FIG. 10B and FIG. IOC show steps of mounting the door lock 700 to the panel 450 of the electrical device as follows:

[0083] Step 1 : As shown in FIG. 10A, an upward force is applied to the distal end 765 of the operating handie 761 to move the locking slider 720 upward to the releasing position (as shown by the arrow 1001 ), i.e., the extension part 913 of the Sock head 733 of the locking slider 720 is inserted into the groove 731 . The door hook hole body 701 is aligned with the mounting hole 452 on the panel 450, and the door lock 700 is tilted by a certain angle such that the left clamping edge 703.1 on the door hook hole body 701 first stretches over the mounting hole 452. In this case, the left clamping edge 703.1 is clamped above the left edge 502 of the mounting hole 452.

[0084] Step 2: As shown in FIG. 10B, the door lock 700 is moved leftward (as shown by an arrow 1002), such that the left edge 502 in the mounting hole 452 retracts to the position of a recess 920 (i.e., beneath the extension part 913 of the lock head 733). In this case, the upward force applied to the operating handle 763 is kept, and the locking slider 720 is still at the releasing position. A third distance L3 is formed by the distance between the left sidewaii 708, 3 and the right sidewaii 708.2 of the door hook hole body 703 plus the width of the lock head 133. The third distance L3 is less than the length of the mounting hole 452. In this case, the right edge 504 of the mounting hole 452 is out of the edge top of the right clamping edge 703,2; therefore, the right clamping edge 803.2 can be pushed over the right edge 504 of the mounting hole.

[0085] Step 3: As shown in FIG. IOC, the door lock 700 is moved rightward (as shown by an arrow 1003), such that the right clamping edge 703.2 is clamped on the right edge 504 of the mounting hole 452. In this case, the space of the groove 731 on the left is released. In this case, the external force applied to the operating handle 761 is released, and the locking slider 720 on the operating handle 761 moves downward to exit from the groove 731 quickly, and clatters such that the operator knows that it is mounted in place. A fourth distance L4 is formed by the distance between the left sidewall 708.1 and right sidewafi 708.2 of the door hook hole body 701 plus the width of the lock head 733 of the locking slider 720 and the width of the extension part 913. The fourth distance L4 is the same as the length of the mounting hole 452 (or slightly less than the length of the mounting hole 452), such that the door lock 700 cannot move in the length direction of the mounting hole 452. The width at two sides of the width of the door hook hole body 701 is the same as the width of the mounting hole 452, so that the door lock 700 cannot move in the width direction of the mounting hole 452 either. Moreover, the clamping edges 703.1 , 703.2 on the door hook hole body 703 are located above the mounting hole 452, and a distance between edge tops thereof is greater than the length of the mounting hole 452, such that the door lock 700 cannot escape from the mounting hole 450. Therefore, the door lock 700 cannot move in left-right, front-back and up- down directions of the mounting hole 452, that is, the door lock 700 is secured in the mounting hole 452.

[0086] It should be noted that the door lock shown in FIG. 7A and the door lock shown in FIG. 9A may also use the mounting hole 452 or indicating hole 51 1 described in FIG, 5A to FIG. 5B to display whether the door lock 700 is completely secured in the mounting hole 452.

[0087] For an existing electrical device (such as a washing machine), the door lock can be fixed to a front panel thereof with screws. However, the manner of fixing with screws has the following defects: (1 ) for the door lock of the washing machine mounted with screws, the screws rust easily, thus causing problems such as hole corrosion of the panel of the washing machine and affecting the tightness of the door lock mounted; and (2) securing the door lock with screws is time- consuming and labor-consuming, being adverse to improvement of the production efficiency. To avoid the problems caused by fixing the door ioek on the panel with screws, the existing electrical device fixes the door lock on the panel thereof in a screwSess manner. Specifically, two mounting holes are disposed on the panel of the electrical device in the prior art, and two mounting posts are disposed on the shell of the door lock. During mounting, the two mounting posts on the shell of the door lock are pressed into the two holes on the panel, such that the door lock is fixed on the panel. However, in the prior art, the serewiess fixing manner has the following defects: (1 ) the mounting posts are pressed from the front of the panel, and a user may detach the door lock from the panel; (2) the mounting holes and the mounting posts have high requirements for setting precision; and (3) the mounting holes affect the appearance of the panel.

[0088] Compared with the prior art, the serewiess door lock mounting structure disclosed in the present application has the following technical effects: (1) the user cannot detach the door lock from the panel from the front of the panel; (2) requirements for the manufacturing precision are relatively low; (3) mounting and dismounting from the back of the panel are convenient; (4) after the door lock is mounted, the mounting hole is invisible from the panel; and (5) the depth of the locking slider entering the mounting hole (the locking slider can penetrate through the mounting hole 452, see FIG. 4C) can be greater than thai in the prior art, thus increasing the reliability of mounting the door Sock.

[0089] Although the present application is described with reference to the specific implementation manners shown in the accompanying drawings, it should be understood that the door lock structure in the embodiments of the present application may have many variations without departing from the spirit and scope and background taught, in the present application. Those of ordinary skill in the art will be aware that the embodiment structures in the embodiments disclosed in the present application can be modified in different manners, and all the modifications fali within the spirit of the present application and the scope of the claims.