JP2002366047A - Screen angle adjusting device for display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen angle adjusting device for a large display device, which can stably halt the forward and backward inclination of the display device at an optional inclination, adjust the rotation angle of the right and left directions of the display device step by step and prevent the display device from rotating rapidly to the utmost. SOLUTION: The device consists of a lift means having a base plate, a lift plate and a support plate and utilizing a linking mechanism for lift-tilting the lift plate provided between the base plate and the lift plate with respect to the base plate and a jack device, a rotation means with a friction mechanism provided between the lift plate and the support plate for frictionally rotating the support plate within a prescribed angle with respect to the lift plate, and a lock means for locking the rotation of the support plate step by step. In the case, a lift regulation means for regulating the lift range of the lift plate can be added in addition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen angle adjusting device suitable for adjusting a screen angle of a large display device mounted on a wall surface, particularly for a large display device.

[0002]

2. Description of the Related Art In recent years, thin and large televisions and other display devices using liquid crystal, plasma, or a large number of light emitting diodes or small discharge lamps as pixels instead of CRTs have been developed. Since these are thin, they can be mounted on a wall just like a picture frame. In such a case, if there is a screen angle adjusting device that can arbitrarily adjust the screen angle in the front-rear direction or the left-right direction after mounting, the screen of the display device can be adjusted to an easy-to-view angle according to various mounting locations, installation conditions, and the like. It is convenient.

[0003] Various screen drive adjustment devices are known for this purpose, and among them, Japanese Patent Application No. 11-309596 developed by the present applicant is known as the closest device to the present invention.

This conventionally known screen angle adjusting device for a display device can be lifted to a free stop via a base plate attached to a wall surface of a building and a lifting means using a link mechanism with a tilt mechanism with respect to the base plate. A lift plate that is tiltably mounted, and a support plate that mounts a display device that is rotatably mounted on the lift plate via a rotation mechanism, wherein the lift means raises the lift position by at least two steps. The rotation mechanism has a first position and a second position rotated by 90 ° from the first position.
Characterized in that it has a lock means that can be locked at the position (1).

The lift angle adjusting means has a lock plate that moves in conjunction with the rotation mechanism and a lock pin attached to the lock plate, and the lock pin restricts the movement of the lift arm of the lift means. It is characterized by having been configured to be
Further, the rotation mechanism includes a cam plate that rotates together with the support plate, a first locking recess and a second locking recess respectively provided at the first position and the second position provided on the cam plate. A locking member that engages with the first locking recess and the second locking recess;
And a lock plate that locks at the position.

[0006]

In the above-mentioned prior art, the means for stopping the display device at an arbitrary position in the front-rear direction is based on the tilt mechanism provided in parallel with the lift mechanism. However, there is a problem that the inclination angle must be changed over time due to the vibration or vibration of the wall, so that it is necessary to correct the angle from time to time.

Further, in the above-mentioned prior art, the display device cannot be stopped at an arbitrary rotational position in the left-right direction, and furthermore, the display device is suddenly rotated at the time of rotating operation and the device is damaged. In order to avoid this, a brake mechanism consisting of a cam plate and a locking member was provided, but if the display device becomes large and heavy, this brake mechanism cannot function sufficiently. There were also problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a screen angle adjusting device for a large display device, which can stably stop the display device in the front-rear direction at an arbitrary tilt angle within a certain range. To be.

A second object of the present invention is to achieve the above-mentioned object and to adjust the rotation angle of the display device in the left-right direction in a stepwise manner, and to minimize the sudden rotation of the display device. It is an object of the present invention to provide a screen angle adjusting device that can prevent such a problem, particularly for a large display device.

[0010]

In order to achieve the above-mentioned object, the present invention has a base plate, a lift plate, and a support plate, and the lift plate provided between the base plate and the lift plate is connected to the base plate. Lift means utilizing a link mechanism and a jack device for tilting the lift with respect to the friction plate, and friction for rotating the support plate provided between the lift plate and the support plate in a predetermined angle range with respect to the lift plate. It is characterized by comprising rotating means with a mechanism and locking means for locking the support plate rotation stepwise.

The present invention also utilizes a link mechanism and a jack device having a base plate, a lift plate, and a support plate, wherein the link mechanism is provided between the base plate and the lift plate, and the lift plate is tilted with respect to the base plate. Lifting means, rotating means with a friction mechanism for rotating the support plate provided between the lift plate and the support plate in a predetermined angle range with respect to the lift plate, and rotating the support plate. It is characterized by comprising lock means for locking stepwise and lift restricting means for restricting the lift range of the lift plate.

In this case, according to the present invention, the jack device can be a screw jack device.

[0013] The invention further provides a rotating means having a friction mechanism for the support plate, the plurality of rollers being inscribed in a mounting hole provided in the lift plate, and a mounting pin passing through each roller from the support plate. A holding plate attached to the opposite side of the plate, and a ring-shaped friction plate provided between the holding plate and the lift plate and / or between the support plate and the lift plate to accommodate each of the rollers. Can be configured.

The present invention further provides a cam plate having a locking recess slidably mounted on a lift plate via a frame member, and a cam plate between the cam plate and the lift member. A compression spring resiliently urged to slide in one direction,
The cam plate may include a plurality of stopper pieces attached to the holding plate, which are successively fitted to the locking recesses of the cam plate, and an operating lever for moving the cam plate against elasticity.

According to the present invention, there is provided a stopper plate attached to the lift mechanism so as to rotate together with the arm of the link mechanism, and a stopper member attached to the stopper plate so as to come into contact with the stopper plate at an upright angle of the arm. Can be configured.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 denotes a base plate mounted on a wall 2, and a lower base plate 1a and an upper base plate 1b smaller than the lower base plate 1a are superposed and fixed. It is configured. The reference symbol 3 is a lift plate which is attached to the base plate 1 via lift means 4 and 4, which will be described later, so as to be liftable and tiltable, and includes an upper lift plate 3a and a lower lift plate smaller than the upper lift plate 3a. 3b is fixed by polymerization. The base plate and the lift plate each have two plates superposed and fixed,
If sufficient strength can be obtained, one sheet may be used. The reference symbol 5 is a support plate rotatably attached to the lift plate 3, and a large display device 6 is attached to the support plate 5. As the display device 6, a device using a liquid crystal, a plasma, a large number of light-emitting diodes, small discharge lamps, and the like is typical. However, without being limited to this, various light-emitting bodies and light-emitting means are used. Things included. In short, any device that is thin and can be attached to a wall is included in this display device.

The lifting means 4, 4 includes link mechanisms 4a, 4
a and a jack device 13, of which the link mechanisms 4a, 4a are, as shown particularly in FIGS. 5 and 7 to 9, a lower base plate 1a and an upper base plate 1b.
Rising pieces 1c, 1c, 1d,
1d is pivotally supported at one end side via first support shafts 7 and 7, and the other end side is a hanging piece 3c, 3c.3 hanging down from both ends of the upper lift plate 3a and the lower lift plate 3b.
d and 3d, which are supported by the second support shafts 8 and 8 via the second support shafts 8 and 8, respectively. First arms 9 and 9 having a C-channel cross section located on the upper side in the figure, and rising pieces 1c and 1c of the base plate 1.・
1d, 1d is pivotally supported at one end via the third support shafts 10, 10 and the other end side is a hanging piece 3c, 3c of the lift plate 3.
It is composed of second arms 12, 12 having the same C-channel cross section which are pivotally supported on the third shaft 3d via the fourth shafts 11, 11.

As shown in FIG. 5, FIG. 7 and FIG. 10, the jack device 13 has a pair of jack arms 13 each having a pair of large and small widths having a substantially U-shaped cross section.
a, 13a, 13b, 13b, and a pair of connecting shafts 14, 14 connecting one ends of the jack arms 13a, 13b, 13b.
a · 13b, 13b are connected to each other, and are attached to a holding member 15a on the base plate 1 side and a holding member 15b on the lift plate 3 side, respectively.
5 and a threaded rod 16 penetrating through a female screw hole provided in the pair of coupling shafts 14, 14. The threaded rod 16 is connected to the coupling shaft 14 on which this is screwed and the other coupling shaft 14. In, the direction of cutting the screws is reversed. One end of the threaded rod extends to one side of the base plate 1 and can be rotated in either direction using a jack handle (not shown). Although the illustrated one is a screw jack device, this can be changed to a rack type or hydraulic type jack device.

Next, the rotating means 17 for rotating the support plate 5 will be described. As shown in particular in FIGS. 5 and 11, the support plate 5 is
The mounting pin 20 with the plurality of nuts 22 (implemented) penetrates the plurality of rollers 18 inscribed in the mounting hole 3e provided in the lift plate 3 and is mounted on the holding plate 19 having a larger area than the mounting hole 3e arranged inside the lift plate 3. Are rotatably attached to the lift plate 3 via six). Between the support plate 5 and the lift plate 3, and between the lift plate 3 and the holding plate 19
A friction plate 21 having a receiving hole 21a that is inscribed in the outer periphery of the roller 18 is disposed between them. By tightening the nut 22, a friction torque is generated when the support plate 5 rotates. It is configured. The members arranged so as to circumscribe each roller 18 and the members arranged between the friction plate and the holding plate are spacers 23 and 24 each composed of a plurality of sheets.

The holding plate 19 has a 90 °
Stopper pieces 25 arranged at equal intervals in the angle range of
Is fixed. A member having a substantially U-shaped cross section which is fixed to the lift plate 3 at 180 ° intervals and located on the rotation locus between the holding plates 19 is a stopper 26 for defining a rotation range of the holding plate 19.

A lock means 27 is provided near the stopper 26 of the holding plate 19 for intermittently receiving each stopper piece 25 and stopping the click. As shown in FIGS. 5 and 12, the locking means 27 includes a frame member 28 mounted on each of the stopper pieces 25 and the lift plate 3 described above, and a cam member mounted on the frame member 28 so as to be vertically movable. 29, a compression spring 30 elastically provided between the cam member 29 and the folded portion 3f of the lift plate 3 to urge the cam member 29 in one direction, and a cam member 2 which is in contact with the folded portion 3f.
In order to lower the 9 against the elasticity of the compression spring 30, an operating lever 31 connected to the cam member 29, one end of which is connected to the operating lever, and the other end of which is locked to the cam member 29. The cam member 29 is provided with a locking recess 29a for receiving the tip of the stopper piece 25.

Upper lift plate 3 of lift plate 3
a and the second support shafts 8, 8 that support the first arms 9, 9, are attached to the distal ends of the second support shafts 8, 8, particularly as shown in FIGS. The contact step 32a on the outer periphery,
A stopper plate 32 having a second arm 32a; a stopper member 33 attached to a hanging piece 3c of the upper lift plate 3a;
Connecting pieces 34, 34 for connecting between the shaft 9 and the second support shafts 8, 8
Are provided.

Therefore, using the screen angle adjusting device according to the present invention, a large display device 6 is attached to the wall portion 2 as shown in FIG.
As shown in FIG. 2, when the screw rod 16 of the jack device 13 is rotated clockwise using a jack lever (not shown) when the screw rod 16 is to be tilted forward, The connecting shafts 14 and 1 screwed to the male screw portions 16a and 16b whose directions are reversed.
The lift plates 3 are pushed up by the jack arms 13a and 13b rising, and the lift plates 3 are pushed up by the link mechanisms 4a and 4a. And is tilted forward while being pushed up by the second arms 12 and 12.

When the first arm 9 is tilted up to a predetermined angle, the stopper plates 32, 32 attached to the second support shafts 8, 8 which rotate through the connecting pieces 34, 34 when the first arms 9, 9 rise, rotate to contact the corresponding stoppers. When the contact steps 32a, 32a (only one of them is shown) abut against the stopper members 33, 33, further tilting of the lift plate 3 and the support plate 5 in the forward direction is prevented, as shown in FIGS. 2 and 7. It will be stopped and held at such a position. In this state, the support plate 5 to which the display device 6 is attached is tilted forward while being lifted, so that the lower portion of the display device 6 attached to the support plate 3 is a wall as shown in FIGS. It does not hit the department.

The maximum tilt angle of the display device in this embodiment is restricted by the lift restricting means 35. The jack device 13 can stop and hold the display device at an arbitrary tilt angle up to the restricted angle.

Next, when changing the rotation angle of the display device shown in FIG. 1 in the left-right direction, when the display device 6 is inclined, the jack device 13 is used to return the display device 6 to its original position. When the operating lever 31 is raised with a finger, the locking member 31a is pulled downward.
, The cam member 29 descends to release the engagement between the locking recess 29a and the stopper piece 25 attached to the holding plate 19, so that the holding plate 19 is easily rotated, and the display device 6 is easily rotated. . When the display device 6 is rotated by hand in this way, the display device 6 rotates until the stopper piece 25 contacts the stopper 26. The rotation angle at this time is 90 °, and the horizontally long display device 6 becomes vertically long as shown in FIG.

The holding plate 19 has a stopper 2
5 are attached at 18 ° intervals, so that the operation lever 31
By the operation described above, each stopper piece 25 is brought into the locking recess 29a.
It is possible to hold and stop the rotation by 18 ° by repeating the insertion / removal into / out of the housing.

The support plate 5 rotates together with the rotation of the holding plate 19, but the rotation is smoothed by the rollers 18 inscribed in the mounting holes 3e, and the rapid rotation is controlled by the friction plates 21 and 21.

The tilt angle of the vertically elongated display device 6 in the forward direction is more restricted than that of the horizontally long display device (FIG. 2) as shown in FIG. 4, but this lift tilting operation is performed by the above-described link mechanism 4a. , 4a and the jack device 13.

[0030]

The present invention is configured as described above.
The following effects can be obtained.

According to the first aspect of the present invention, the large-sized display device attached to the support plate can be lifted by the link mechanism, and can be tiltably finely adjusted by rotating the screw rod of the jack device. When the rotation angle of the display device in the left-right direction is to be changed, the friction mechanism and the locking means acting on the support plate cause the rotation angle from 0 ° to 90 °.
In addition to being able to adjust the rotation stepwise within the range, it is possible to prevent abrupt rotation, effectively preventing excessive force from being applied to the screen angle adjustment device due to overspeed during rotation operation. It can be effective. According to the second aspect of the invention, the tilt angle of the display device can be restricted and the lower end portion of the display device can be prevented from contacting the wall while achieving the same effect as the first aspect. According to the third aspect, it is possible to provide an effect that the failure of the lift means can be reduced. Claim 4
With the configuration as described above, the same effect as in claims 1 and 2 is achieved, and the supporting state of the large-sized display device is stabilized by supporting with a plurality of rollers inscribed in the mounting hole provided in the lift plate, An effect that the rotation operation of the display device can be easily performed can be obtained. According to the fifth aspect, the rotation angle of the display device in the left-right direction can be adjusted in a stepwise manner, and each stopper piece attached to the holding plate and the engaging recess of the cam plate are fitted to each other. There is an effect that the stop holding state of the display device at the rotation angle can be further stabilized. With such a configuration, it is possible to obtain an effect that the tilt angle of the support plate can be regulated with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a screen angle adjusting device for a display device according to the present invention.

FIG. 2 is a right side view schematically showing an operation of the screen angle adjusting device for the display device shown in FIG.

FIG. 3 is a front view showing another example of use of the screen angle adjusting device for a display device according to the present invention.

FIG. 4 is a right side view schematically showing an operation of the screen angle adjusting device for the display device shown in FIG. 3;

FIG. 5 is an enlarged front view of a partially mounted screen angle adjusting device for a display device according to the present invention.

FIG. 6 is an enlarged right side view of a screen angle adjusting device for a display device according to the present invention.

FIG. 7 is a right side view of a partially omitted portion for explaining the operation of the screen angle adjusting device for a display device shown in FIG. 5;

FIG. 8 is a plan sectional view showing a first arm portion of the lift means.

FIG. 9 is a plan sectional view showing a second arm portion of the lift means.

FIG. 10 is a sectional view for explaining the jack device.

FIG. 11 is a side sectional view for explaining a rotating unit.

FIG. 12 is a plan sectional view for explaining a lock unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base plate 3 Lift plate 4 Lifting means 4a Link mechanism 5 Support plate 6 Display device 13 Jack device 16 Screw rod 17 Rotating means 19 Holding plate 21 Friction plate 27 Locking means 28 Frame member 29 Cam member 30 Compression spring 31 Operating lever 31a Lock Member 32 Stopper plate 33 Stopper member 34 Connecting piece 35 Lift restricting means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/64 581 H04N 5/64 581K

Claims (6)

[Claims] A lift mechanism using a jack mechanism and a link mechanism having a base plate, a lift plate, and a support plate, wherein the lift mechanism is provided between the base plate and the lift plate to tilt the lift plate relative to the base plate. Rotating means having a friction mechanism for rotating the support plate provided between the lift plate and the support plate in a predetermined angle range with respect to the lift plate, and rotating the support plate in a stepwise manner. A screen angle adjusting device for a display device, comprising: a locking means for locking. 2. A lifting means having a base plate, a lift plate, and a support plate, and a link mechanism provided between the base plate and the lift plate for tilting the lift plate with respect to the base plate, and a jack device. Rotating means having a friction mechanism for rotating the support plate provided between the lift plate and the support plate in a predetermined angle range with respect to the lift plate, and rotating the support plate in a stepwise manner. A screen angle adjusting device for a display device, comprising: a lock means for locking; and a lift restricting means for restricting a lift range of the lift plate. 3. The screen angle adjusting device for a display device according to claim 1, wherein the jack device is a screw jack device. 4. A rotating means having a friction mechanism for the support plate, wherein the rotating means has a plurality of rollers inscribed in a mounting hole provided in the lift plate, and a mounting pin penetrating through each roller from the support plate. A holding plate attached to the side, and a ring-shaped friction plate provided with the respective rollers housed between the holding plate and the lift plate and / or between the support plate and the lift plate. The screen angle adjustment device for a display device according to claim 1, wherein: 5. A cam plate having a locking concave portion slidably mounted on a lift plate via a frame member, and the cam plate in one direction between the cam plate and the lift member. A compression spring resiliently provided to slidably bias, a plurality of stopper pieces attached to a holding plate to be fitted one after another with the locking concave portion of the cam plate, and the cam plate is moved against the elasticity. The screen angle adjusting device for a display device according to any one of claims 1 to 4, further comprising an operating lever. 6. A lift restricting means includes a stopper plate attached to rotate with the arm of the link mechanism, and a stopper member attached to the stopper plate so as to abut against the stopper plate at an upright angle of the arm. The screen angle adjusting device for a display device according to claim 2, wherein: