Technical Field

[1] The present invention relates to a safety device for a door in which a door framework is assembled with a door flap by a hinge so as to open and close the door flap while rotating the door flap about the hinge, and more particularly to an improved safety device for a door in which a safety device including a member capable of elastically appearing and disappearing is mounted on one edge of the door flap that rotates about a hinge, so as to prevent hurting or fracturing someone, even when a finger has been caught between the door framework and the door flap, thereby preventing safety accidents. Background Art

[2] In general, an opening and closing door includes a door framework and a door flap and has a structure in which a hinge, or the like, is mounted between the door framework and the door flap and the door flap rotates about a hinge so as to open and close the door. As such, the conventional opening and closing door employs a way of opening and closing the door while rotating about the hinge serving as the center axis and is not equipped with special safety device. Therefore, this may cause a problem in that, when a finger of a person, especially a child, has been caught between the door framework and the door flap, i.e. the crevice of the door that is the rotating space including the hinge, by the close for the door through carelessness, the door framework and the door flap are pressed so as to cause a severe accident, such as hurting, fracturing someone, etc. Disclosure of Invention Technical Problem

[3] Therefore, the present invention has been made in view of the above-mentioned problems, and the present invention provides an improved safety device for a door in which a safety device including a member capable of elastically appearing and disappearing is mounted on one edge of a door flap of an opening and closing door having a hinge, i.e. a certain portion of the edge surface on which the hinge is mounted, so that the elastic force of an appearing/disappearing member can prevent a finger of a person from being hurt, even when a finger has been caught between the door framework and the door flap. Technical Solution

[4] In accordance with an aspect of the present invention, there is provided a safety device for the door according to the present invention includes an inside tension plate member 11 fixed to an edge of a door flap 100 on which a hinge 101 is installed, an outside tension plate member 12 spaced away from the inside tension plate member 11 in a predetermined distance, a sliding bar 13 formed on a middle portion between the inside tension plate member 11 and the outside tension plate member 12 and capable of sliding in a longitudinal direction, an inside tension bar 14 for connecting the inside tension plate member 11 and the sliding bar 13 in which one end is rotatably connected to the sliding bar 13 by a rotation pin 131 and a torsion spring 132 and the other end is rotatably connected to an inner side bracket 113 fixed to the inside tension plate member 11 by a hinge pin 111 and a torsion spring 112, an outside tension bar 15 for connecting the outside tension plate member 12 and the sliding bar 13 in which one end is rotatably connected to the sliding bar 13 by a rotation pin 131 and a torsion spring 132 and the other end is rotatably connected to an outside bracket 123 fixed to the outside tension plate member 12 by a hinge pin 121 and a torsion spring 122, inside front and rear surface cover plates 16 and 16a formed on a front surface and a rear surface of the inside tension plate member 11, respectively, and outside front and rear surface cover plates 17 and 17a formed on a front surface and a rear surface of the outside tension plate member 12, respectively.

Advantageous Effects

[5] Because the safety device having the member capable of appearing and disappearing is mounted on the edge of the door flap that comes into contact with the door framework, even when a finger has been caught between the door framework and the door flap when the door flap closes while rotating about the hinge, the appearing/ disappearing member having the safety device is elastically pressed so as not to hurt a finger, etc. Therefore, even when the hand has been caught in an upper part, a lower part, a middle part, or any other part between the door flap and the door framework, the present invention can prevent the hand from being hurt so as to achieve the safer living environment. Brief Description of Drawings

[6] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[7] FIG. 1 is a perspective view illustrating a safety device for a door according to the present invention;

[8] FIG. 2 is an exploded perspective view illustrating a safety device for a door according to the present invention;

[9] FIG. 3 is a perspective view illustrating the state where a safety device is mounted on a door flap according to the present invention; [10] FIG. 4 is a view illustrating the state of operating an opening and closing door including a safety device while a finger has been caught in the opening and closing door according to the present invention; and

[11] FIG. 5 is an exploded perspective view illustrating a safety device for a door according to the present invention. Mode for the Invention

[12] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[13] FIG. 1 is a perspective view illustrating a safety device for a door according to the present invention, FIG. 2 is an exploded perspective view illustrating a safety device for a door according to the present invention, FIG. 3 is a perspective view illustrating the state where a safety device is mounted on a door according to the present invention, and FIG. 4 is a view illustrating the state of operating an opening and closing door including a safety device while a finger has been caught in the opening and closing door according to the present invention.

[14] As shown in FIGs. 1 and 2, the safety device for the door according to the present invention includes an inside tension plate member 11 fixed to an edge of a door flap 100 on which a hinge 101 is installed, an outside tension plate member 12 spaced away from the inside tension plate member 11 in a predetermined distance, a sliding bar 13 formed on a middle portion between the inside tension plate member 11 and the outside tension plate member 12 and capable of sliding in a longitudinal direction, an inside tension bar 14 for connecting the inside tension plate member 11 and the sliding bar 13 in which one end is rotatably connected to the sliding bar 13 by a rotation pin 131 and a torsion spring 132 and the other end is rotatably connected to an inner side bracket 113 fixed to the inside tension plate member 11 by a hinge pin 111 and a torsion spring 112, an outside tension bar 15 for connecting the outside tension plate member 12 and the sliding bar 13 in which one end is rotatably connected to the sliding bar 13 by a rotation pin 131 and a torsion spring 132 and the other end is rotatably connected to an outside bracket 123 fixed to the outside tension plate member 12 by a hinge pin 121 and a torsion spring 122, inside front and rear surface cover plates 16 and 16a formed on a front surface and a rear surface of the inside tension plate member 11, respectively, and outside front and rear surface cover plates 17 and 17a formed on a front surface and a rear surface of the outside tension plate member 12, respectively.

[15] An upper portion of one end of the inner tension bar 14 and the external tension bar

15 is shaped like a circle to be rotated, and a lower portion thereof is shaped like "/"for being supported by a wall of the inside tension plate member 11 and outside tension plate member 12 so as not to rotate any more.

[16] Further, the middle part of the inner tension bar 14 and external tension bar 15 includes a first supporting protrusion 18 for elastically supporting both ends of the torsion spring 132 mounted on the rotation pin 131 and a second supporting protrusion 19 for elastically supporting one end of each of the torsion springs 112 and 122 mounted on the hinge pins 111 and 121, respectively.

[17] The inside front and rear surface cover plates 16 and 16a are integrally fixed to the inside tension plate member 11 and extend up to a location in which the sliding bar 13 is formed, and the outside front and rear surface cover plates 17 and 17a are also integrally fixed to the outside tension plate member 12 and extend up to a location in which the sliding bar 13 is formed. The edge ends of the inside front and rear surface cover plates 16 and 16a are slightly engaged with the external sides of the edge ends of the outside front and rear surface cover plates 17 and 17a to be overlapped.

[18] Herein, in the inside tension bar 14, one end, i.e. the portion connected to the sliding bar 13, includes the rotation pin 131 and the torsion spring 132, but the other end, i.e. the hinge pin 11 of the inner side bracket 113 fixed to the inside tension plate member 11 can omit the torsion spring 112. Further, in the outside tension bar 15, one end, i.e. the portion connecting to the sliding bar 13, includes the rotation pin 131 and the torsion spring 132, but the other end, i.e. the hinge pin 121 of the outside bracket 123 fixed to the outside tension plate member 12 can omit the torsion spring 122.

[19] Further, two pairs of inner side tension bars 14 and outside tension bars 15 can be mounted, but two or more pairs thereof can be mounted according to the size for the door or the necessity of the demander. Herein, one pair refers to a state where one inside tension bar 14 is assembled with one outside tension bars 15.

[20] According to the improved safety device 10 of the present invention having the aforementioned structure, when the inside tension plate member 11 and the outside tension plate member 12 are pressed from both sides in Ga direction of the arrow, the inside tension plate member 11 and the outside tension plate member 12 are pressed, the respective torsion springs 112, 122, and 132 are elastically compressed, the inside tension bar 14 and the outside tension bar 15 rotate about the respective hinge pins 111 and 121 and the rotation pin 131, and the sliding bar 13 slides and moves up in "Ga" direction of the arrow.

[21] In this state, when exterior force applied to the inside tension plate member 11 and the outside tension plate member 12 is removed, the inside tension bar 14 and the outside tension bar 15 conversely rotate by restoration elastic force of the respective torsion springs 112, 122, and 132, and the sliding bar 13 moves in a counter direction of the "Ga" direction of the arrow so that the safety device 10 is elastically restored to an initial state. [22] In the improved safety device 10 of the present invention having the aforementioned structure, at least two sets can be installed in an upper and a lower portion or an upper, a middle, and a lower portions in which one inside tension bar 14 and one outside tension bar 15 constitute one set and two sets mounted on a left and right side in a same structure become one pair.

[23] However, it is apparent that the installation of the inside tension bar 14 and the outside tension bar 15 is not limited to the embodiment of the present invention and can be variously modified and operated.

[24] In order to mount the safety device 10 of the present invention having the aforementioned structure in the door flap 100, as shown in FIG. 3, a part for the door flap 100, i.e. the part on which the safety device 10 is supposed to be mounted, is first cut. When the part for the door flap 100 is cut as such, the cut surfaces, i.e. a front surface 103, an upper surface 104, and a lower surface 105 are formed on the door flap 100 as shown in FIG. 3, and the inside tension plate member 11 is fixed to the front surface 103 using an assembling piece (not shown), adhesive bond, etc.

[25] Further, a pressing switch 20 and a locking apparatus 25 having a latching jaw 21 that elastically protrudes when the pressing switch 20 is pressed are built in the upper surface 104 and the lower surface 105 for the door flap 100 on which the safety device is supposed to be mounted. Therefore, when the door flap 100 closes while rotating about the hinge 101, the pressing switch 20 presses against the surface of the door framework 200, and then the latching jaw 21 protrudes, so that the outside tension plate member 12 is fixed, so as to fail to perform the tension function, i.e. press. 'A'of FIG. 3 is a sectional view illustrating the state in which, when the door flap 100 closes towards the door framework 200, the locking apparatus 25 is operated, i.e. the pressing switch 20 is pressed, so as to protrude the latching jaw 21.

[26] Herein, the locking apparatus 25 employs a mechanism in which it includes a switch and a protruding portion, so that, when the switch is pressed, the protruding portion protrudes. Therefore, it can be simply constructed according to the common public knowledge, so its detailed description will be omitted.

[27] According to the operation state of the locking apparatus 25 as shown in enlarged view 'A'of FIG. 3, when the door framework 200 closes and the pressing switch 20 is pressed, the latching jaw 21 protrudes so as to interrupt the protruding function of the outside tension plate member 12. In contrary, the door flap 100 opens through the rotation, the pressing switch 20 is released from pressing and elastically protrudes and restores, and the latching jaw 21 is simultaneously received so that the outside tension plate member 12 returns to an elastically protrudible state.

[28] This can prevent the outside tension plate member 12 from being elastically pressed, the crevice being opened, and the inner space being shown through the crevice when the very slim and wide member, such as a knife, is pushed from the outside into the crevice and is rotated after the door flap 100 closes towards the door framework 200. [29] Further, according to the present invention, the improved safety device 10 for the door is mounted on the door flap 100 and the door flap 100 including the safety device

10 is mounted on the door framework 200. If a finger of a child has been caught between the door flap 100 and the door framework 200 when the door flap 100 closes through the rotation, the outside tension plate member 12 is elastically pressed (in the direction of the arrow of FIG. 4) instead of a finger being pressed, the space between the door framework 200 and the safety device 10 is widen by'H'space. Therefore, a finger is not pressed so as to prevent an accident. In addition, even if a finger has been caught in any location of the upper, middle, and lower part of the crevice, it is possible to achieve the same effect as above.

[30] According to another embodiment of the present invention, as shown in FIG. 5, the improved safety device 10 for the door does not include inside front and rear surface cover plates 16 and 16a mounted on a front surface and a rear surface of the inside tension plate member 11, respectively, and outside front and rear surface cover plates 17 and 17a mounted on a front surface and a rear surface of the outside tension plate member 12, respectively. Instead, the improved safety device 10 for the door includes an inside receiving member 22 and an outside receiving member 23 which are formed in the ' τ= ' shape having one opening. The inside receiving member 22 and the outside receiving member 23 include female assembling units 22a and 23a in their upper part and lower part of the inside surface, respectively, and the inside tension plate member

11 and the outside tension plate member 12 include male assembling units 11a and 12a correspondingly assembled with the female assembling units 22a and 23a in an upper part and lower part of their other surfaces. If the inside tension plate member 11 is pushed into the inside receiving member 22, the male assembling unit 11a formed on the other surface of the inside tension plate member 11 is inserted into the female assembling unit 22a formed on the inside receiving member 22 to be fixedly assembled. Then, if the outside tension plate member 12 is pushed into the outside receiving member 23, the male assembling unit 12a formed on the other surface of the outside tension plate member 12 is inserted into the female assembling unit 23a formed on the outside receiving member 23 to be fixedly assembled.

[31] At this time, an end of an opening part of the outside receiving member 23 is inserted into an opening part of the inside receiving member 22 to be overlapped. That is, if the outside receiving member 23 is pressed with load, the inside receiving member 22 slides along the exterior surface of the outside receiving member 23 to be elastically pressed. It is of course to employ the structure in which the inside receiving member 22 is inserted into the outside receiving member 23 to slide. [32] Herein, the female assembling units 22a and 23a and male assembling units 11a and

12a can be constructed and installed through the publicly known art in which the female and male assembling units are easily inserted into each other through pushing them and easily separated from each other through pulling them.

[33] It is apparent that the improved safety device 10 for the door according to the present invention is not limited into the opening/closing door, but can be applied to a sliding door or other gate.

[34] Therefore, the safety device according to the present invention is applied to a general door flap so as to prevent accidents, such as a finger of a child being caught in the crevice of a door.

[35] Although several exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.