JP2000267581A - Arm stand for liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably perform a drawing-out action and a folding action of a large type liquid crystal display. SOLUTION: This arm stand comprises a supporting member 4 to be attached to the back face of a liquid crystal display L via a back face member 2, a plate-like 1st arm 11 for supporting the supporting member 4 via a coupling means 5 at variable angles, a plate-like 2nd arm 12 for supporting the 1st arm 11 via the 2nd coupling means 6 at variable angles, and an elastic member 8 arranged between the 1st arm 11 and the 2nd arm 12. And, the coupling directions of the 1st coupling means and the 2nd coupling means 6 are reversed, and a change in the angle of the supporting member 4 to the 1st arm 11 is arranged in the opposite direction of a change in the angle of the 1st arm 11 to the 2nd arm 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arm stand for a liquid crystal display.

[0002]

2. Description of the Related Art Conventionally, there are two types of personal computers: a desktop type used by being placed on a desk or a table, and a portable type (also called a laptop or notebook type) which is convenient to carry. Among these, as a desktop type, in recent years, a thin liquid crystal display is rapidly spreading in place of a CRT display.

[0003] The thin liquid crystal display has been reduced in size while being increased in size, and is expected to be used as a wall-mounted television or the like.

[0004]

By the way, as for a small liquid crystal display of about 10 inches or less, an arm stand for pulling out or folding the same has been developed as an arm type supporting a light bulb (light). I have. The arm stand of the small liquid crystal display includes a first arm in a rod shape and a second arm in a rod shape rotatably supporting the first arm. The small liquid crystal display is largely pulled out or folded forward. In addition to this, it is also possible to adjust the small liquid crystal display by a predetermined angle to the left, right, front and back.

However, a large liquid crystal display having a size of about 15 inches or more has a great problem that it must be stably supported in consideration of its weight and size. Even if it can do so, no arm stand has been developed that can be used like a small liquid crystal display that can be pulled out, folded, or hung on a wall.

A liquid crystal display device disclosed in, for example, Japanese Patent Application Laid-Open No. H11-7337 has been disclosed as a device which facilitates so-called pen input. It is impossible to hang it on a wall.

Accordingly, the present invention is capable of supporting a large-sized liquid crystal display not only in the front-back and left-right directions but also in a rotatable manner. It is an object of the present invention to provide a liquid crystal display arm stand that can be used and supports a wide range of applications.

[0008]

According to a first aspect of the present invention, there is provided an arm stand for a liquid crystal display, comprising: a supporting member attached via a back member on the back of the liquid crystal display; A plate-like first arm for supporting the member via a first connecting means so as to be capable of changing the angle, and a plate-like second arm for supporting the first arm such that the angle is changeable via a second connecting means; Arm and the first
And an elastic member disposed between the second arm and the second arm, and the connecting direction of the first connecting means and the second connecting means is reversed so that the supporting member for the first arm is The angle change and the angle change of the first arm with respect to the second arm are configured in opposite directions.

According to the first aspect of the present invention, even if the large-sized heavy liquid crystal display is pulled out or folded over a wide range of angle changes, the large liquid crystal display can be connected to the plate-shaped first arm and the second arm. Since the second arm is supported and an elastic member is provided between the first arm and the second arm, the wide angle change can be stably performed. Further, since the angle change between the support member and the first arm is reversed,
Arm stably supports the liquid crystal display in response to a change in the angle between the support member and the first arm.

According to a second aspect of the present invention, based on the first aspect, the second arm has an angle adjusting member for adjusting the angle of the second arm left and right. A mounting table for desk mounting, which is attached and vertically supports the second arm, is mounted via the angle adjusting member.

According to the second aspect of the present invention, the second arm is mounted on the mounting table for desk mounting which vertically supports the second arm via the angle adjusting member. From the above, when the mounting table stably supports the second arm on a desk or a table, and adjusts the angle of the second arm left and right by the angle adjusting member, the large liquid crystal display is adjusted right and left. be able to. Further, since the angle adjusting member assists the vertical support state of the second arm, the liquid crystal display does not tilt even if the large liquid crystal display is largely pulled out or folded forward.

According to a third aspect of the present invention, there is provided an arm stand for a liquid crystal display according to the first aspect of the present invention, wherein the second arm is provided with mounting means for hanging on a wall. .

According to the third aspect of the present invention, when the second arm is mounted on a wall or a partition (partition) via the wall mounting means, the large liquid crystal display is largely separated from the wall or the like. It can be used or folded and used like a picture frame.

According to a fourth aspect of the present invention, based on the first aspect, a back member is rotatably mounted on the support member, and the back member and the support member are provided. And an arcuate guide groove and a locking portion that slides along the guide groove are relatively provided.

According to the fourth aspect of the invention, when the liquid crystal display is rotated by a predetermined angle, the locking portion slides along the arc-shaped guide groove, but is locked to the end of the guide groove. Since the portions come into contact with each other and stop, the rotation of the liquid crystal display by a predetermined angle or more is restricted, so that the liquid crystal display can be used in either a horizontal type or a vertical type.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 and 2, an arm stand 1 of a liquid crystal display according to the present embodiment has a liquid crystal display L which is a liquid crystal display device of a personal computer as an electronic device. It is placed and supported on a desk or table T. The liquid crystal screen of the liquid crystal display L has a flat surface 15.
It is a large inch and weighs about 4.5 kg.

First, a back member 2 is provided on the back of the liquid crystal display L. This back member 2
This is a metal plate-shaped member for mounting the arm stand 1 of the present embodiment. As shown in FIG. 3, screw holes are formed at four corners, and the four screws B form the liquid crystal display L. Mounted on the back. The back member 2
Is formed so as to protrude outward, and a screw hole 3a to which the screw member 3 is attached is formed in the protruding portion 2a. The back member 2 is formed with an arc-shaped guide groove 2b to be described later.

Behind the back member 2, a support member 4 for supporting the back member 2 is mounted via the screw member 3 and a nut. That is, the support member 4
Is a metal member having a U-shaped cross section composed of left and right side portions and a central portion, and a screw hole 4a to which the screw member 3 is attached is formed at the center. Therefore, the back member 2 is rotatably connected to the support member 4 by inserting the screw member 3 into the screw holes of the support member 4 and the back member 2 and screwing the screw.

Further, the back member 2 and the support member 4 include
As shown in FIG. 3, an arc-shaped guide groove 2b and this guide groove 2b
An engagement portion 4b that slides along the line b is provided relatively. In the present embodiment, the back member 2 is provided with an arc-shaped guide groove 2b, and the support member 4 is provided with a locking portion 4b that slides along the guide groove 2b. It is also possible to provide. Further, the arc-shaped guide groove 2b of the present embodiment is provided at an angle θ of 90 degrees around the screw member 3. Therefore, when the locking portion 4b of the support member 4 is slid in the arc-shaped guide groove 2b, the liquid crystal display L is rotated by 90 degrees. Since it contacts the end of the arc-shaped guide groove 2b, it cannot be rotated. That is, by rotating the liquid crystal display L, it can be used from a horizontal type to a vertical type.
The rotation angle of the liquid crystal display L of the present embodiment is set to 90 degrees in order to prevent the wiring cord E (see FIG. 5) from becoming entangled, but the angle θ of the arc-shaped guide groove 2b is set. The rotation of 90 degrees or more by increasing the angle is optional depending on the implementation. In addition, a sheet (not shown) is provided between the back member 2 and the support member 4 so as to smoothly rotate while contacting them.

The support member 4 is a plate-shaped first arm 1
Arm stand 1 consisting of a first arm 12 and a second arm 12
And the second connecting means 6. As with the support member 4, the first arm 11 and the second
The arm 12 is also a metal member having a U-shaped cross section composed of left and right side surfaces and a central portion, respectively, between the support member 4 and the first arm 11, and between the first arm 11 and the second arm 11. The first connecting means 5 and the second connecting means 6 are attached between the first and second arms 12 respectively.

The first connecting means 5 and the second connecting means 6
Is a kind of hinge as shown in FIG. 3 and FIG.
A hinge shaft 7a is provided below the support member 4 and the first arm 11, while a side surface rotatably supporting the hinge shaft 7a is provided above the first arm 11 and the second arm 12. A plate 7b is provided. Here, the hinge shaft 7a has one end formed in a cylindrical shape, the other end formed in a substantially semi-cylindrical shape, and a circular tip portion 7c of a side plate 7b formed on one side surface of the cylindrical shape with a screw member N. It is screwed by a nut and is configured to be rotatable. A plurality of screws B are screwed from the semi-cylindrical outer peripheral side of the hinge shaft 7a.

Therefore, the supporting member 4 and the first arm 1 are adjusted by adjusting the force for screwing the side plate 7b to the hinge shaft 7a with the screw member N.
1 angle change and the first arm 11 and the second arm 1
The range of the angle change of 2 is set. That is, by adjusting the screwing force, the support member 4, the first arm 11, and the first arm 1
The stopping torque at which the first and second arms 12 stop at a predetermined angular position can be adjusted. In the arm stand 1 according to the present embodiment, the supporting member 4, the first arm 11, and the second arm 12 are folded at the positions of the first connecting means 5 and the second connecting means 6. Is configured to be possible.

Here, the first connecting means 5 and the second connecting means 6 are connected to the circular tip 5 of the side plate 7b.
It is configured such that the direction of c is opposite (see FIGS. 3 and 4). Accordingly, the angle of the support member 4 can be changed only to the rear side (see reference numeral F1 in FIG. 1), and the angle of the first arm 11 can be changed only to the front side (see reference numeral F2 in FIG. 1). The angle cannot be changed in the opposite direction. This is because the direction in which the angle between the support member 4 and the first arm 11 can be changed is regulated in advance, so that an unreasonable load is not applied to the second arm 12 and the support posture of the second arm 12 is stabilized. It is. Further, two hinge shafts 7a are provided in the first connecting means 5 and three hinge shafts are provided in the second connecting means 6 in the present embodiment, but the number is not limited, and By increasing the length of the shaft 7a, the shafts 7a may be provided one by one.

The width of the first arm 11 and the second arm 12 of this embodiment is about 95 mm, and the length is about 12 mm.
0 mm. The width of the support member 4 is about 95 mm.
And the length is about 70 mm. Since each of the arms 11 and 12 and the support member 4 is a metal chassis as described above, a circuit board or the like can be provided in addition to the wiring cord E. As shown in FIG. 5, the first arm 11 and the second arm 12 have covers C detachable from the front side and the rear side thereof.
1, C2, D1 and D2 are provided. In the center of the first arm 11, a hole for passing a wiring cord E is formed.

The second arm 12 is provided with an elastic member 8 as shown in FIG. This elastic member 8
In the present embodiment, two torsion coil springs are arranged in parallel with each other in order to reduce the load caused by changing the angle of the first arm 11. That is, although the first connecting means 5 and the second connecting means 6 have the stopping torque, the load of the large liquid crystal display L is heavily applied to the first arm 11, so that the second connecting means Only by means 6,
It is difficult to stop the first arm 11 at a predetermined angular position while making the angle change possible. Therefore, two elastic members 8 are provided between the first arm 11 and the second arm 12. Elastic member 8 of the present embodiment
The torsion coil springs have hook portions 8a and 8b
Is formed, the upper hook portion 8a is locked to the lower mounting member 9a of the first arm 11, and the lower hook portion 8b
Is locked to the mounting member 9b below the second arm. Although the elastic member 8 according to the present embodiment is provided only between the first arm 11 and the second arm 12, in order to maintain the angular posture of the support member 4, Arrangement between the first arm 11 and the fourth arm 11 is optional depending on the implementation.

The second arm 12 stands upright on a table 13 for table mounting. That is, as shown in FIGS. 1 and 2, an L-shaped vertical support member 14 is integrally provided in front of the second arm 12, and an axial support member is provided in the rear of the second arm 12. The angle adjustment member 15 is provided, and is vertically set on the mounting table 13. A sheet S for smoothly rotating the second arm 12 is adhered to substantially the center of the mounting table 13, and the rotation of the second arm 12 is fixed at a predetermined position. Stoppers 13a, 1 that regulate each to 45 degrees
3b are provided so as to protrude. The mounting table 13 of the present embodiment has a size of 220 mm in length, 260 mm in width, and 15 mm in height.

As shown in FIG. 4, the angle adjusting member 15 is vertically supported by a plate-like mounting member 12a mounted on the lower end of the second arm 12. The plate-like mounting member 12a has a cylindrical void portion 12b formed at the center, and the angle adjusting member 15 is stored and supported.
And the upper part of the angle adjusting member 15 is screwed,
The lower part is penetrated and engaged with the locking hole of the mounting table 13. Thereby, as shown in FIG. 6, the angle of the liquid crystal display L is adjusted to a maximum of 45 degrees left and right around the angle adjusting member 15. In addition, since the angle adjusting member 15 vertically supports the second arm 12 on the mounting table 13 together with the vertical support member 14, even if the large liquid crystal display L is largely pulled out toward the user, or the predetermined angle Even if it is rotated, it is stably placed on the desk T while preventing tilting and falling.

Next, a case will be described in which the liquid crystal display L is mounted on a desk T or the like using the arm stand 1 of the liquid crystal display of the present embodiment. Note that the arm stand 1 of the present embodiment stably supports the large liquid crystal display L by restricting in advance the direction in which the angle between the support member 4 and the first arm 11 can be changed. Such wide use is possible.

First, when the user wants to use the liquid crystal display L by pulling it forward from the original position where the liquid crystal display L is placed at a predetermined position on the desk or table T, the user pulls the liquid crystal display L forward as shown in FIG. Since the first arm 11 rotates forward around the second connecting means 6, the liquid crystal display L can be seen closer. When the liquid crystal display L is to be used from a horizontal type to a vertical type, when the liquid crystal display L is rotated as shown in FIG. 7, as described above, the locking portion is formed along the arc-shaped guide groove 2b. When the liquid crystal display L rotates by 90 degrees when the liquid crystal display L rotates by 90 degrees, the locking portion 4b comes into contact with the end of the arc-shaped guide groove 2b and the rotation thereof stops. Therefore, the liquid crystal display L can be used from a horizontal type to a vertical type.

When a so-called pen input or touch panel input is to be performed on the liquid crystal display L, the liquid crystal display L is pulled out forward, and as shown in FIG. The second connecting means 6 is further rotated downward so as to make contact with the upper part (see reference numeral F2 in FIG. 8), and the angle of the support member 4 is changed rearward about the first connecting means 5. Then, the liquid crystal display L is directed obliquely upward with the liquid crystal display L in contact with the desk T or the like, so that the pen input or the like can be easily performed. Further, as shown in FIG. 9, it is also possible to use by being fixed to an end of a desk or a table T by a mounting table 20 having a holding portion 19.

(Second Embodiment) The arm stand 21 of the liquid crystal display of the present embodiment is shown in FIGS.
As shown in FIG. 1, the liquid crystal display L is supported for wall hanging or partition hanging. The liquid crystal display L is a large, 15-inch liquid crystal display similar to that of the first embodiment.

The arm stand 21 of the liquid crystal display according to this embodiment is not provided with the mounting table 13 and the angle adjusting member 15 for mounting on the desk of the first embodiment. When used by hanging on the wall K, as shown in FIG. 10, the second arm 12 has a simple structure in which mounting means 22 for wall hanging is provided. That is, the second arm 12 can be screwed to the wall K via a screw member or a screw on a plate-like member which is the mounting means 22 for hanging on the wall. Further, the liquid crystal display L is partitioned into partitions (partitions) P having a predetermined thickness.
11, as shown in FIG. 11, the screw is fixed to the upper end of the partition P via an engaging member 23 having a U-shaped cross section which can be hung. By attaching in this way, it becomes possible to use the large liquid crystal display 1 largely separated from the wall K or the like, or to fold and use it like a picture frame.

In this embodiment, similarly to the first embodiment, an elastic member 8 (not shown) is provided between the first arm 11 and the second arm 12. Since the connecting directions of the first connecting means 5 and the second connecting means 6 are opposite to each other, it is possible to stably perform the operation of pulling out and folding the liquid crystal display L.

When the liquid crystal display L is to be transported or packed, the liquid crystal display L is removed from the wall K or the like and the elastic member 8 is removed.
From the hook portions 8a and 8b, and the first arm 11 and the second arm 11 at the positions of the first connecting means 5 and the second connecting means 6 are removed.
When the arm 12 is folded, as shown in FIG. 12, the first arm 11 and the second arm 12 are folded such that their back surfaces are overlapped. In the folded state, the first arm 11 and the second arm 12 are hidden behind the liquid crystal display L, so that they do not hinder transportation or packing.

Further, in this embodiment, a simple desktop type can be used without mounting the mounting tables 13 and 20 for mounting on the desk. That is, FIG.
As shown in (2), the second arm 12 can be used as a substitute for the mounting table 13 for mounting on a desk.

Although the present embodiment has been described using the large liquid crystal display L, the arm stands 1 and 21 of the liquid crystal display of the present invention can of course be applied to a small liquid crystal display. .

[0038]

According to the arm stand for a liquid crystal display of the present invention, even when a large and heavy liquid crystal display is pulled out or folded, the large liquid crystal display is supported by the plate-shaped first and second arms. In addition, since the direction in which the angle between the support member and the first arm can be changed is reversed, the above operation can be stably performed with a simple structure. Therefore, a large-sized liquid crystal display can be widely used both for desk-mounted and wall-mounted.

Further, in the arm stand for a liquid crystal display according to the present invention, even if the large-sized liquid crystal display is largely pulled out toward the user, the elastic member disposed on the second arm can be used to change the angle of the first arm. Since it sufficiently responds to the load, it is possible to stably and surely maintain the angular posture of the first arm while allowing the angle change of the second connecting means.

[Brief description of the drawings]

FIG. 1 is a side view showing an arm stand of a liquid crystal display according to a first embodiment of the present invention for use on a desk.

FIG. 2 is a rear view of the arm stand of the liquid crystal display according to the first embodiment.

FIG. 3 is an exploded perspective view showing the support member and the first connecting means of the first embodiment.

FIG. 4 is an exploded perspective view showing a second arm and a second connecting means of the first embodiment.

FIG. 5 is an exploded perspective view showing a state in which a cover is attached to the arm stand according to the first embodiment.

FIG. 6 is a plan view illustrating an operation of adjusting the angle of the liquid crystal display of the first embodiment to the left and right.

FIG. 7 is a front view showing a state where the liquid crystal display according to the first embodiment is rotated.

FIG. 8 is a side view showing an example of a case where a pen input is performed on the liquid crystal display of the first embodiment.

FIG. 9 is a side view when the arm stand of the liquid crystal display according to the first embodiment is attached to an end on a desk.

FIG. 10 is a side view showing an arm stand of a liquid crystal display according to a second embodiment of the present invention for hanging on a wall.

FIG. 11 is a side view of the case where the arm stand of the liquid crystal display according to the second embodiment is used by being partitioned.

FIG. 12 is a cross-sectional view illustrating a folding operation of an arm stand of the liquid crystal display according to the second embodiment.

FIG. 13 is a side view showing an example in which the arm stand of the liquid crystal display according to the second embodiment is used as a simple desktop type.

[Explanation of symbols]

1, 21 arm stand, 2 back member, 2b arc-shaped guide groove, 4 support member, 4b locking portion, 5 first connecting means, 6 second connecting means, 7a hinge shaft, 7b
Side plate, 7c circular tip, 8 elastic member (torsion coil spring), 8a, 8b hook, 11
1st arm, 12 2nd arm, 13, 20 mounting table, 15 angle adjusting member, 22 wall mounting means, 23 engaging member, θ angle of arc-shaped guide groove, K
Wall, L liquid crystal display, P partition, T
Desk (table)

Claims (4)

[Claims] 1. A support member attached via a back member on the back of a liquid crystal display, a plate-shaped first arm for supporting the support member via a first connecting means so as to be able to change its angle, A plate-like second arm that supports the first arm so as to be able to change its angle via a second connecting means; and an elastic member disposed between the first arm and the second arm. The connection direction of the first connection means and the second connection means is reversed, and the angle change of the support member with respect to the first arm and the angle change of the first arm with respect to the second arm are performed in opposite directions. An arm stand for a liquid crystal display characterized by being constituted. 2. An angle adjusting member for adjusting the angle of the second arm to the left and right is attached to the second arm, and the mounting table for desk mounting, which vertically supports the second arm, is provided. 2. The arm stand of a liquid crystal display according to claim 1, wherein the arm stand is attached via an angle adjusting member. 3. An arm stand for a liquid crystal display according to claim 1, wherein said second arm is provided with a mounting means for hanging on a wall. 4. A back member is rotatably attached to said support member, and said support member and said back member are relatively provided with arcuate guide grooves and engaging portions sliding along said guide grooves. The arm stand of a liquid crystal display according to claim 1, wherein: