| WO/1998/014103 | A STAND FOR PIVOTALLY SUPPORTING A COMPUTER SCREEN HOUSING |
| WO/2012/025614 | SAFETY DEVICE FOR INTERACTIVE DISPLAY SYSTEM |
| JP3499816 | RECEIVING BASE FOR VIDEO DISPLAY DEVICE |
KAZANA, Krysztof (ul. barska 7/2, Krakow, PL-30-307, PL)
SMIESZEK, Wlodzimierz (ul.brzozowa 7/7, Krakow, PL-31-050, PL)
KAZANA, Krysztof (ul. barska 7/2, Krakow, PL-30-307, PL)
Claims
1. Head for directing objects, especially for displaying screens, including a screen fixing element and a support, characterized in that it consists of a compensating system for a torque caused by displacing of the centre of gravity of the screen, compensating system determined by coupling the tilting movement of the screen - its leaning forward or raising up on the horizontal rotation axis (3) - with the linear movement of the screen - its raising or lowering along the vertical rotation axis (8).
2. Head according to claim 1 , characterized in that the torque compensating system consists of the rocker lever (2) connected to the screen mount (1), said rocker lever (2) equipped with toothed section (5) and born on the horizontal rotation axis (3) situated in the slider (4), linearly shifted by means of the intermediate gear (6) along the toothed bar (7).
3. Head according to claim 2, characterized in that the toothed bar (7) is a part of the cylindrical element (8), rotationally placed and constituting the vertical axis of rotation of the screen.
4. Head according to claim 3 characterized in that the slider (4) is driven by the motor (M1) of tilting.
5. Head according to claim 3, characterized in that the cylindrical element (8) is driven by the motor (M2) of rotation.
6. Head according to claim 3, characterized in that the cylindrical element (8) consists of the pipe, equipped with longitudinal toothed bar (7) and with internal surface constituting the guide bar of the slider (4).
7. Head according to claim 6 characterized in that the toothed bar (7) is in the shape of many rectangular wholes, set out at the scale and made along the wall of the pipe (8).
8. Head according to claim 7, characterized in that the pipe (8) has a circular diameter.
9. Head according to claim 3, characterized in that it has two shelves - the upper shelf (12) and the lower shelf (14), in which the pipe (8) is rotably fastened.
10. Head according to claim 9, characterized in that the motor (M1) of the tilting unit and the motor (M2) of the rotation unit are attached co-axially in the upper shelf (12) and in the lower shelf (14).
11. Head according to claim 10, characterized in that, the motor (M 1) of the tilting unit is attached parallel do the body of the pipe (8), said motor (M1) driving by the pair of gear wheels (13) the bush (16), that bush (16) functioning as a nut, and the cooperating screw (15), which is joined with the slider (4).
12. Head according to claim 10, characterized in that the motor (M1) of the tilting unit is attached to the lower shelf (14), said motor (M1) driving by the pair of gear wheels (13) the bush (16), that bush (16) functioning as a nut, and the cooperating screw (15), which is joined with the slider (4).
13. Head according to claim 10, characterized in that the motor (M2) of the rotating unit is attached parallel do the body of the pipe (8), said motor (M2) driving the gear (20) interlocked with the toothed race (21), rigidly joined with the pipe (8).
14. Head according to claim 10 characterized in that the motor (M2) of the tilting unit is attached to the upper shelf (12), said motor (M2) driving the gear (20) interlocked with toothed race (21), rigidly joined with the pipe (8).
15. Head according to claim 3, characterized in that in the lower part of the slider (4), parallel to the axis of the bearing bolt (10) of the intermediate gear (6), the second bolt is fastened (10'), whereas both bolts (10), (10') with the length longer than the width of the slider (4) having fixed slippers (11) on the protruding ends, the slippers (11) of the shape which complements the circular diameter of the pipe (8).
16. Head according to claim 9, characterized in that that the upper shelf (12) and the lower shelf (14) are ending with clamping rings fixed at the vertical element .
17. Head according to claim 3, characterized in that it has the motor (M1) of the tilting unit attached over the body of the pipe (8), said motor (M1) driving the screw (115) and the cooperating nut (116) which is joined with the slider (4).
18. Head according to claim 3, characterized in that it has motor (M1) of the tilting unit attached under the body of the pipe (8), said motor (M 1) driving the screw (115) and the cooperating nut (116) which is joined with the slider (4).
19. Head according to claim 3, characterized in that that is cooperating with the vertical lift device. |
Head for directing objects, especially for displaying screens
Technical field
The subject of the invention is a head for directing objects, especially for displaying screens. The device is suitable particularly for remote control of flat liquid crystal or plasma television or computer screens and allows regulation of the tilting and rotating of the screen.
Background art
There are known mounts designed for fastening flat, plasma or liquid crystal display (LCD) television and computer screens. Such mounts can be fixed to the vertical stands then fixed to the furniture or fixed separately to the walls or external intermediate elements. The mounting devices allow regulation of the up and down inclination in a low range with simultaneous or separate rotation.
There is known the mechanism, WO 2004/063619, for fastening flat displaying devices, such as computer monitors or television screens, which allows rotation of the screen around the virtual axis, which comes directly through the centre of gravity of the screen. The mechanism includes the holder connected to the back surface of the screen and the support fixed directly or indirectly to the fastening surface. The support and the holder are connected slidingly with each other by means of the arched element which has a virtual rotation axis inside. The screen can be tilted around rotation axis, parallel to the frontal surface of the screen, in the range of angle determined by the arch. The rotation axis comes through the center of gravity of the screen which cause that its weight is in balance with one of the angular position. Thus any locking or adjusting elements are required to keep the screen in the inclined position.
There is known the mechanism, WO 2006/044969, for fastening flat displaying screens, which includes in the supporting board two specially formed surfaces, generally curvilinear, exemplary in the form of guiding grooves, receiving and
cooperating with two fastening elements connected to the back surface of the screen.
Mentioned fastening elements move slidingly with the screen through proper curvilinear surfaces, which form and dimensions allow the reaction forces between fastening elements and the supporting board, to equilibrate the torque made by the center of gravity of the screen and to hold - up the screen in the desired angular position with respect to the supporting surface.
There are existing devices with motor drive of the object's mount which are used for directing an object in the surrounding area. The controlled linear and rotary movements of separate links of kinematics' chain are performed by separate drives, subordinated to each of the links.
The example of such solution, US 6 655 645, is a device which is used to position of flat television screen LCD in the surrounding area. The installing plate of a device adapted for fixing television behind vertical back wall is connected with built inside head: unit of tilting towards horizontal axis and the unit of rotation towards vertical axis. The units are driven by low power motor reducer and each one consists of electric motor and planetary gear. The head has two horizontal plates: lower, immobile one, and upper one, rotational bearing on the vertical shaft, rigidly joint with the upper sheet. On the upper plate the unit of installing plate is fixed, which is born on the horizontal axis on the truss which is joint with the upper level. The angle tilting of the installing plate is set by the motor drive consisting of electric motor fixed in vertical position, worm gear and screw transmission. Screw axis is horizontal and vertical. The screw axis is horizontal and vertical to the basic level of the installing plate and runs below the horizontal axis of its bearing. Linear shift of the screw, which end is connected by the crosshead articulated joint with the plate enables tilting of the installing plate towards the horizontal axis. Motor reducer of the rotating unit is fixed under the lower drive sheet and powers gear transmission placed between sheets. Gear wheel receiving the rotation moment is fixed to the upper plate and is born on the vertical shaft bound to the lower plate. In the presented solution two embodiments are revealed: one with the head fixed through the lower plate to the hanger anchoraged at the defined
height to the vertical wall and the second one with the head situated at the chosen vertical position, fixed at the vertical screw lift.
Disclosure of invention
The head, accordingly to the invention, which shall be used for fastening flat television or computer screens includes screen fastening element and the support.
According to the invention, the head consists of a compensating system for a torque caused by displacing of the centre of gravity of the screen, compensating system determined by coupling the tilting movement of the screen - its leaning forward or raising up on the horizontal rotation axis - with the linear movement of the screen - its raising or lowering on the vertical rotation axis.
The torque compensating system consists of a rocker lever connected to the screen mount, said rocker lever equipped with toothed section and born on the horizontal rotation axis situated in the slider, linearly shifted by means of the intermediate gear along the toothed bar.
The toothed bar is a part of the cylindrical element, rotationally placed and constituting the vertical axis of rotation of the screen.
The slider is driven by the motor of tilting. The cylindrical element is driven by the motor of rotation.
Further development of the invention refers to the head in which the cylindrical element consists of a pipe, equipped with longitudinal toothed bar and with internal surface constituting the guide bar of the slider. The pipe has a circular diameter. The toothed bar is in the shape of many rectangular wholes, set out at the scale and made along the wall of the pipe.
The head has two shelves - the upper shelf and the lower shelf, in which the pipe is rotably fastened.
The motor of the tilting unit and the motor of the rotation unit are attached co- axially in the upper shelf and in the lower shelf.
In further embodiment the motor of the tilting unit is attached parallel do the body of the pipe, said motor driving by the pair of gear wheels the bush, that bush functioning as a nut, and the cooperating screw, which is joined with the slider.
In variant solution the motor of the tilting unit is attached to the lower shelf, said motor driving by the pair of gear wheels the bush, that bush functioning as a nut, and the cooperating screw, which is joined with the slider.
The motor of the rotating unit is attached parallel do the body of the pipe, said motor driving the gear interlocked with the toothed race, rigidly joined with the pipe-
In variant solution the motor of the rotating unit is attached to the upper shelf, said motor driving the gear interlocked with toothed race, rigidly joined with the pipe.
In the lower part of the slider, parallel to the axis of the bearing bolt of the intermediate gear, the second bolt is fastened, whereas both bolts with the length longer than the width of the slider having fixed slippers on the protruding ends, the slippers of the shape which complements the circular diameter of the pipe.
The upper shelf and the lower shelf are ending with clamping rings fixed at the vertical element .
In one-motor embodiment the motor of the tilting unit is attached over the body of the pipe, driving the screw and the cooperating nut which is joined with the slider.
In variant the motor of the tilting unit is attached under the body of the pipe, driving the screw and the cooperating nut which is joined with the slider.
The head may cooperate with the vertical lift device.
In one, preferred embodiment of the invention, the head for directing flat displaying screens comprises:
- a screen fixing element,
- means for mounting or supporting the head,
- a compensation system for a torque caused by displacing of the centre of gravity of the screen,
- said compensating system determined by coupling the tilting movement of the screen - its leaning forward or raising up on the horizontal rotation axis - with the linear movement of the screen - its raising or lowering along the vertical rotation axis,
- said compensating system consisting of the rocker lever connected to the screen mount, said rocker lever equipped with toothed section and born on the horizontal rotation axis situated in the slider, linearly shifted by means of the intermediate gear along the toothed bar,
- the toothed bar in the shape of many rectangular wholes, set out at the scale and made along the wall of the pipe with internal surface constituting the guide bar of the slider,
- the motor of the tilting unit and the motor of the rotation unit attached parallel do the body of the pipe,
- the motor of the tilting unit attached to the lower shelf and driving by the pair of gear wheels the bush, that bush functioning as a nut, and the cooperating screw, which is joined with the slider,
- the motor of the rotating unit attached to the upper shelf and driving the gear interlocked with toothed race, rigidly joined with the pipe.
The object of the invention is allowing easy and gentle movement of the television or computer screen placed in the mount, without necessity of additional, manual locking it in the new position, with a possibility of bringing simultaneous rotation around the vertical axis.
Brief description of drawings
The solution according to the invention is presented at the examples showed in the drawings , where the separates figures present: fig. 1 - a scheme of the head illustrating the basis of its action, fig. 2 - a scheme of the head illustrating the basis of its action, a top view, fig. 3 - the head with the longitudinal section, fig. 4 - the head with the crosswise section along B-B line marked on fig. 3, fig. 5 - the head in the perspective view, fig. 6 - the head with one motor in longitudinal section.
Detailed description of invention
Fig. 1 and fig. 2 present a scheme of the head illustrating the basis of its action.
The head has a mount 1 used for fixing the television screen, not shown in the picture, and which can be tilted or rotated manually or with the use of motor drive.
The mount 1 of the screen is connected with a rocker lever 2, born at the horizontal axis 3 in a slider 4 which in its longitudinal section has the shape of
,,U".
Along the side of the rocker lever 2, the side marked with the arc from its horizontal axis 3, there is a toothed section 5, coupled with a toothed bar 7 by intermediate gear 6 born in the slider 4.
The toothed bar 7 is a part of a cylindrical element 8, rotationally placed and constituting the vertical axis of rotation of the screen.
Thus, the slider 4 is shifted linearly through the toothed bar 7 along the element 8. The rotation of the slider 4 with respect to the element 8 is counteracted by the sliding pin connection.
Fig. 3 - fig. 6 present the industrial embodiment of the invention. In this example fig. 3 - fig. 5 present the head with two motors - motor M1 used for performing the tilting movement towards the horizontal axis and motor M2 used for performing the rotating movement towards the vertical axis.
In this embodiment the toothed bar 7 is in the shape of many rectangular wholes, set out at the scale and made along the wall of the element 8. The element 8 consists of a pipe with circular diameters, with longitudinal window directed towards the mount 1. The internal surface of the pipe 8 consists of a guide bar of the slider 4, which slider 4 goes into the interior of the pipe 8 through its window.
In the lower part of the slider 4, parallel to the axis of a bolt 10 bearing the intermediate gear 6, there is a second bolt 10'. The length of both bolts 10,10' is longer than the width of the slider 4, which enables fixing slippers 11 on the protruding ends. The slippers 11 have the shape which complements the circular diameter of the pipe 8.
The body of the head has two horizontal shelves: the upper shelf 12 and the lower shelf 14.
The motor M1 of the tilting unit is attached to the lower shelf 14 and drives through the pair of gear wheels 13 the bush 16, which is functioning as a nut, as well as the cooperating screw 15, which is joint with the slider 4.
The body of the head is attached in a rotational way on both shelves 12, 14 and is longitudinally bom in the lower shelf 14 through the bearing 19.
The motor M2 of the rotation unit is attached to the upper shelf 12 and drives the gear 20 interlocked with the toothed race 21 , rigidly joined with the pipe 8.
In the version with manual drive the head consists of the body in the form of the pipe 8 with toothed bar 7, where the rocker lever 2 is situated as well as the intermediate gear 6 and the slider 4.
In the version with one motor drive M1 , it is situated at the upper position and trough the screw 115 drives the nut 116, which is joined with the slider 4.
In the version with manual drive up and down movement of the screen is executed by pushing or pulling it. During forcing change of the location, the head performs two movements - tilting rotational and linear. By putting the external force to the screen the rotation of the toothed section 5 follows, which through the intermediate gear 6, rotating in the reverse direction to rotation of the toothed section 5, cause linear movement of the slider 4 along the toothed bar 7 of the element 8. The movement of the slider 4 causes simultaneous raising or lowering the screen.
Coupling of the screen tilting - its leaning forward or raising up on the horizontal rotation axis 3 - with the linear movement of the screen - its raising or lowering along the element 8 - causes the compensation of the torque created by the dislocation of the centre of gravity of the screen.
The torque being a consequence of the dislocation of the centre of gravity of the screen with respect to the mechanical rotation axis is compensated by the torque consequent to the weight of the screen.
The kinematical system works independently from the weight of the screen.
In the version with motor drive, the movement is executed by one or two motors which force - by means of the gears 13,16 and screw-nut arrangement - the slider 4. The slider 4 cooperates by intermediate gear 6 with the toothed section 5 of the rocker lever 2. The resulting coupling of the screen tilting with its linear movement is the same as above.
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