JP2000347582A - Display supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a display supporting device which enables a user to surely and stably move a display to an arbitrary height by utilizing by utilizing more effective friction resistance. SOLUTION: Link members 10 and 11 move in forward and backward directions with each other as an arm 3 turns and as the each other's link members 10 and 11 move relatively to each other, i.e., the parallel links 12 rotate and, therefore, even if the reaction to be applied per single area is as small as a half, the turning of the parallel links 12 may be regulated in the same manner as heretofore and not only the generation of the friction sounds at the time of movement of the display 1 is substantially prevented but also the stable movement of the display 1 is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display supporting apparatus for supporting a display movably on a desk or the like, and more particularly to a display supporting apparatus capable of stably moving a display to a predetermined height.

[0002]

2. Description of the Related Art In recent years, thin liquid crystal displays, plasma displays and the like have been rapidly spreading mainly as displays for personal computers and televisions. Since such a liquid crystal display is thinner than a conventional CRT or the like, it is convenient because it does not occupy a large space when used on a desk in an office or at home, for example.

In order to effectively use such a liquid crystal display, the display can be freely moved in any direction and stably to an arbitrary height position by using a multi-joint arm device such as used for lighting equipment. To move it.

[0004]

In this type of arm device, a frictional force is applied to a joint portion near a rotation axis, energy is absorbed by frictional heat generated by sliding movement at the joint portion, and the arm portion is moved. Generally, means for restricting the rotation and preventing a sharp drop is used. In this case, since a force is applied to the vicinity of the rotation axis, in order to effectively restrict the movement of the display, the drag applied to a single area must be increased, so that a friction sound is generated when the display is moved. In addition, there is a problem that the display does not work stably.

The present invention has been made in view of such a problem, and provides a display supporting apparatus capable of reliably and stably moving a display to an arbitrary height by using a more effective frictional resistance. The purpose is to:

[0006]

In order to solve the above-mentioned problems, a display supporting apparatus according to the present invention supports a display movably in an arbitrary direction by an arm having a fixed base at one end and a display at the other end. A display support apparatus, wherein at least a part of the arm is 2
It is configured by a parallel link composed of two link members, at least the vertical movement of the display is performed by the rotation of the parallel link, and the relative movement of the two link members relative to each other causes the friction member to move. It is characterized by being regulated through According to this feature, with the rotation of the arm, the relative movement of the link members with each other, that is, the link members move in the forward and reverse directions with the rotation of the parallel link, so that the drag given per unit area is reduced. For example, even if it is smaller by half, the rotation of the parallel link can be regulated in the same manner as in the related art, so that not only is it unlikely that a friction sound is generated when the display is moved, but also the display can be moved stably.

[0007] In the display support device of the present invention, it is preferable that a drag between the friction member and at least one of the link members can be adjusted via drag adjustment means. With this configuration, it is possible to stably support the display in response to a change in the weight of the display to be supported.

[0008] In the display support device of the present invention, it is preferable that the friction member is formed of a face plate that comes into planar contact with the link member. By doing so, the friction surface is widened, so that the parallel movement of the parallel link can be restricted with smaller drag.

In the display support device of the present invention, the drag adjusting means is a bolt / nut for holding the friction member and the link member, and the handle member for rotating the bolt around an axis is provided by the handle member. Preferably, it is provided outside the parallel link. In this way, the parallel link can be easily fixed manually from the outside.

[0010] In the display support device of the present invention, the friction member may include a face plate that slidably contacts the one of the link members in a longitudinal direction, and a part of the face plate may be a part of the other. It is preferable that the link member is supported so as to be movable in the vertical direction. With this configuration, the parallel movement of the link member can be restricted with a simple structure.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a liquid crystal display 1 having an arm as a display supporting device mounted on a tabletop 2 of a desk. The state supported by the device 3 is shown. Reference numeral 4 denotes an attachment plate for attaching the display 1 to the tip of the arm device 3, and reference numerals 5 denote handle portions (see FIG. 5) protruding to the left and right sides of the display 1, and the user grips the handle portion 5. In this state, the display 1 can be moved to an arbitrary position on the top 2 and fixed.

As shown in FIGS. 1 to 3, the arm device 3 has a first vertical axis 7 on the display side and a second vertical axis 8 on the opposite side, and horizontal axes 9a to 9 at front and rear ends.
A first arm 12 that forms a parallel link with a first link 10 and a second link 11 that are rotatably mounted on the display in a vertical direction, and one end of the first vertical shaft 7 that can be horizontally rotated in the left-right direction. A second arm 13 having a mounting plate 4 attached to the other end thereof and a lower portion of the second vertical shaft 8 rotatably supported around an axis, and a lower portion attached to and detached from the top plate 2. And a fixed base 15 having a bracket 14 that can be freely adjusted. The arm device 3 can be attached to the top plate 2 by various methods other than the bracket 14.

The first link 10 is composed of a plate member having a substantially U-shaped downward cross section perpendicular to the longitudinal direction (see FIG. 6).
The insertion holes for the horizontal shafts 9a and 9b are formed before and after a. The second link 11 has a horizontal axis 9
c, 9 Two side plates 1 each having a display insertion hole formed therein
1a, and the side plates 11a are provided so as to be located inside the side plates 10a of the first link 10, respectively.

The inner surface of these two side plates 11a is
As shown in FIG. 3, the left and right vertical plates 33a and the horizontal plate 33
b, and a partition plate 33 composed of an inclined plate 33c that connects the lower edge of the vertical plate 33a and the left and right edges of the horizontal plate 33b.
The outer surface of the vertical plate 33a is fixed to the left and right side plates 1
1a are connected by a partition plate 33. This partition plate 3
3 is provided in the longitudinal direction of the first arm 12 so as to extend along the outer peripheral surface of a coil spring described later.
A space S is formed in the first arm 12 by the first link 10 opening downward and the side plate 11a.

As shown in FIGS. 1, 4, and 6, one end of the space S is locked to the horizontal shaft 9c, and the other end is provided with an urging force adjusting mechanism 34 (see FIG. 7). Through the horizontal axis 9
The coil spring 35 having a substantially cylindrical shape, which is locked to the coil spring 35, is housed therein. The coil spring 35 is a tension spring,
The first arm 12 extends with the downward rotation.

As shown in FIG. 6, the lower ends of the left and right side plates 11a of the second link 11 are respectively suspended below the connecting portions of the vertical plate 33a and the inclined plate 33c of the partitioning plate 33. In the lower part of the side plate 11a, an engagement hole 36 is provided.
Are formed at a plurality of locations in the longitudinal direction. Reference numeral 37 denotes a cover member made of a synthetic resin having a substantially U-shaped cross section perpendicular to the longitudinal direction, and engages and disengages a locking portion 38 formed on an upper outer side of the side plate with respect to the engaging hole 36. Thus, the second link 11 can be detachably attached below the second link 11.

By attaching the cover member 37 below the second link 11, as shown in FIG.
A wiring storage space 39 for a power cord and cables extending in the longitudinal direction of the second link 11 is formed outside 3c.

The wiring storage space 39 is provided with a cover member 37.
Even if the bottom surface is mounted so as to be close to the partition plate 33, it is reliably secured by the inclined plate 33c provided along the peripheral surface of the coil spring 35. Therefore, a plurality of power cords and cables can be compactly stored without forming the cover member 37 largely downward and forming a vertical thickness on the entire first arm 12.

The second vertical axis 8 is, as shown in FIG.
A tubular member 8a having an open top and a bottom, and a tubular member 41 attached to a substantially central portion of the tubular member 8a via an attachment plate 40 are provided.
Horizontal axis 9 supporting first link 10 and second link 11
b, 9 A support plate 8b having a display insertion hole formed therein is fixed. The diameter of the cylindrical member 41 is
A diameter is smaller than the diameter of a, and a circumferential wiring storage space 46 for inserting a power cable or cables is formed between the outer peripheral surface of the cylindrical member 41 and the inner surface of the cylindrical member 8a. A support rod 42 erected on the upper plate 14 a of the bracket 14 is inserted into the cylindrical member 41, and the upper end surface of the support rod 42 and the lower surface of the lid plate of the cylindrical member 41 are in sliding contact with each other. The cylindrical member 41 is rotatably supported around the axis of the support rod 42.

On the upper plate 14a of the bracket 14, FIG.
As shown in FIG. 3, a support member 43 having an upper surface formed with a groove 44 formed in a concentric arc centered on a support rod 42.
Is fixed. The cylindrical member 41 is provided in the groove 44.
Is inserted through the support rod 42, the lower end of a rod 45 fixed to a predetermined position on the outer peripheral surface of the cylindrical member 41 is inserted. The groove 44 in the present embodiment is formed in a semicircular arc shape, and the rotation angle of the second vertical shaft 8 is restricted to about 180 degrees by the bar 45.

A part of the arc at the rear of the support member 43 is cut out linearly, and the cylindrical member 8a is provided below the cylindrical member 8a.
An opening is provided for extending a power cord and cables that pass through the wiring storage space 46 in FIG.
The upper part of the wiring storage space 46 is also opened, and communicates with the wiring storage space 39 formed by the cover member 37 of the second link 11.

The left and right side plates 11 constituting the second link 11
As shown in FIGS. 1, 5, and 6, an L-shaped locking piece 47 having a locking groove 48 at a tip bent inward is formed at a predetermined upper portion in front of the portion a. Have been. The lower surface 10c of the upper plate 10b is formed into an L-shape when viewed from the side by a vertical piece 51 whose both edges are locked in the locking groove 48 and a sliding contact plate 52 whose upper surface slides on the lower surface 10c of the upper plate 10b. The sliding contact member 53 as a formed friction member is
An adjusting bolt 49 is inserted into a through hole 50 formed at a predetermined position in front of the upper plate 10b and a long groove 54 formed in the sliding contact plate 52, and the other end of the adjusting bolt 49 is screwed into the sliding contact plate 52. The adjustment bolt 4 is fixed to a pressing plate 56 provided on the back surface.
9 is held by being tightened with a nut 55, the rotation of which is restricted along with the rotation around the axis 9. These adjustment bolts 4
9 and nut 55, the sliding member 53 and the upper plate 10b
And a drag adjusting means.

As shown in FIG. 3, when the first arm 12 moves up and down, a locking piece 47 provided on the second link 11 is moved.
Moves relative to the first link 10 in the front-rear direction. With this movement, the sliding contact plate 52 of the sliding contact member 53 is
Are slid in the longitudinal direction in a state of sliding contact with the lower surface 10c while being guided by the adjustment bolt 49 through the shaft.

The urging force adjusting mechanism 34 of the coil spring 35
As shown in FIG. 7, a bolt 58 rotatably inserted around the axis and a bolt 58 that is rotatably inserted around the axis of the hook piece 57 locked to the horizontal shaft 9 b via the hook portion 57 a and a hook that locks one end of the coil spring 35. A nut 60 is integrated with the stop plate 59 and screwed into the bolt 58.

A lid member 62 that allows the rear opening of the support plate 8 to be opened and closed is pivotally supported on the upper part of the support plate 8b via a horizontal shaft member 61 so as to be vertically rotatable.
By opening the lid member 62, the tip of the hexagon wrench 63 can be inserted into a hexagonal hole (not shown) formed in the head 58a of the bolt 58. That is, in order to adjust the biasing force of the coil spring 35, the hexagon wrench 63 is inserted into the hole of the head 58a, and the bolt 58 is rotated forward and reverse around the axis.

Returning to FIG. 1, one end of the second arm 13
It is mounted on the upper part of the first vertical shaft 7 so as to be rotatable in the horizontal direction. The other end of the second arm 13 has a horizontal shaft 2 facing in the horizontal direction.
Since the horizontal shaft 21 is rotatably held on the back surface of the mounting plate 4 around the axis, the display 1 is mounted as shown by a solid line and a two-dot chain line in FIG.
Can be tilted back and forth.

The handle 5 made of a pipe-shaped frame is
Protruding from the left and right ends of the display 1 respectively,
The user of the display 1 can move the display 1 in an arbitrary direction while holding the grips 5.

Next, the operation of the thus configured arm device 3 as an embodiment of the present invention will be described with reference to the drawings. The vertical movement of the display 1 in the stopped state is performed by vertical rotation of the first arm 12 as shown in FIG. At this time, the first vertical shaft 7 is moved up and down by the parallel link mechanism including the first and second links 10 and 11 while the vertical state is maintained, so that the display 1 does not change its vertical direction. Moved up and down.
Therefore, the user can easily adjust the vertical position while viewing the screen (not shown) of the display 1 from the front of the display 1. The fine adjustment of the display 1 in the vertical direction can be performed by rotating the display 1 about the horizontal axis 21.

The coil spring 35 provided in the first arm 12 is contracted when the first arm 12 rotates upward and urges the first arm 12 upward. Even when supporting a heavy object such as the display 1, the display 1 can be easily moved upward with a small force, and the coil spring 35 extends when the first arm 12 rotates downward. The display 1 is prevented from suddenly falling.

When the display 1 is moved in the left-right direction, the first and second vertical axes 7 and 8 are used as the first and second axes.
The display 1 may be rotated via the second arms 12 and 13. In the present embodiment, the means for rotating and fixing the first and second vertical shafts 7 and 8 are not particularly shown, but an appropriate amount can be obtained by appropriately inserting a friction member having frictional resistance between the arm and the vertical shaft. A feeling of fixation can be obtained.

As shown in FIG. 1, the power cords and cables extending from the display 1 supported on the tip of the arm device 3 and connected to the main body are connected to the cover member 37 and the partition plate 33 as shown in FIG. Wiring storage space 3 formed between
After being inserted from the upper part to the lower part of the wiring storage space 46 of the second vertical shaft 8 from the inside, it can be extended downward, so that it is exposed to the outside and hinders the movement of the arm device 3, And the appearance is not impaired.

The wiring housing space 39 formed between the cover member 37 and the partition plate 33 is formed by the inclined plate 33c of the partition plate 33.
Since the power supply cords and cables are formed on the outer surfaces of the first arm 12, the power cords and cables can be stored compactly without forming a thickness above and below the first arm 12.

Also, the partition plate 33 allows the wiring storage space 3
The power cords and cables in the cable 9 are caught by the coil spring 35 which expands and contracts with the movement of the first arm 12, and the space S
There is no interference such as being crushed by the coil spring 35 that swings inside.

The power cords and cables inserted through the second vertical shaft 8 are composed of a large-diameter cylindrical member 8a and a support rod 4
The second vertical shaft 8 is not twisted and disconnected due to the rotation of the second vertical shaft 8 because it is inserted into the wiring storage space 46 formed between the small-diameter cylindrical member 41 inserted into the second cylindrical member 41.

When the first arm 12 is turned up and down, as shown in FIGS. 3 and 5, the sliding contact member 53 and the first link 10 move relative to each other in the direction opposite to the longitudinal direction. Sliding contact between the upper plate 10b of the contact plate 52 and the lower surface 10c causes frictional resistance. Due to this frictional resistance, the downward rotation speed of the first arm 12 is suppressed, and the display 1
Is prevented from falling rapidly.

In this embodiment, as described above, the sliding member 53 and the upper plate 1 which are relatively moved in the longitudinal direction are relatively moved.
0b to the adjusting bolt 49 and the nut 55 screwed into the adjusting bolt 49.
Therefore, the parallel movement of the first arm 12 can be reliably restricted with a small drag. Therefore, not only is the friction noise less likely to occur, but also the display 1 can be stably moved to a desired height position.

If the adjustment bolt 49 is rotated forward and reverse around the axis, the sliding member 53 and the upper plate 10c of the first link 10 are rotated.
Can be easily adjusted, so that the display 1 can be adjusted in response to a change in the weight of the display 1 due to a change in the display 1 supported by the arm device 3.
Can be stably supported.

The coil spring 35 is appropriately expanded and contracted by rotating a bolt 58 constituting the urging force adjusting mechanism 34 with an appropriate tool such as a hexagon wrench 63.
Can be adjusted, so that the display 1 can be stably supported in response to a change in the weight of the display 1 due to a change in the display 1 supported by the arm device 3. In addition, even when bending occurs due to long-term specifications, the biasing force of the coil spring 35 can be easily adjusted.

In this embodiment, only when the first arm 12 is in a substantially horizontal state, the head 58a of the bolt 58 constituting the urging force adjusting mechanism 33 faces rearward, and the rear opening of the second vertical shaft 8 is opened. Hex wrench 63 can be inserted from the That is, since the biasing force can be adjusted in a state where the maximum moment is applied to the arm, the display 1 is securely prevented from falling after the adjustment, and the safety at the time of the adjustment is enhanced.

FIG. 8 shows a modification of the adjusting bolt 49 as a drag adjusting means. As described above, if the large-diameter handle member 64 is provided at the upper end of the adjustment bolt 49, the adjustment of the applied drag can be easily and manually operated from outside without using a tool or the like. Further, since the handle member 64 is provided near the display 1 in the first arm 12, the user can easily operate the handle member 64 while supporting the display 1 at an arbitrary height position, and It can be easily fixed at the height position.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

For example, in the above embodiment, the sliding member 5
Although 3 is provided on the display 1 side of the upper plate 10b, the arrangement position is not particularly limited.
It may be provided on the fixed base 15 side.

[0043]

The present invention has the following effects.

(A) According to the first aspect of the present invention, the link members move relative to each other in the forward and reverse directions with the rotation of the arm, ie, the relative movement of the link members with each other, ie, the rotation of the parallel link. Therefore, even if the drag applied to a single area is as small as half, for example, the rotation of the parallel link can be regulated as in the past, so that not only is the frictional noise hardly generated when the display is moved, but also the display is moved stably. I can do it.

(B) According to the second aspect of the present invention, the display can be stably supported in response to the change in the weight of the display to be supported.

(C) According to the third aspect of the present invention, since the friction surface is widened, the parallel movement of the parallel link can be restricted with a smaller drag.

(D) According to the fourth aspect of the present invention, the parallel link can be easily and manually fixed from the outside.

(E) According to the invention of claim 5, the parallel movement of the link member can be restricted with a simple structure.

[Brief description of the drawings]

FIG. 1 is a side view showing a use state of a display support device as an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing the internal structure of the display support device of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a side view showing a use state of the display support device of FIG. 1;

FIG. 5 is a partially broken plan view showing the internal structure of the display support device of FIG. 1;

FIG. 6 is a sectional view taken along line AA of FIG. 1;

FIG. 7 is an enlarged sectional view of a main part showing an urging force adjusting mechanism.

FIG. 8 shows a modified example of a bolt as a drag adjusting means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display 2 Top plate 3 Arm device 4 Mounting plate 5 Handle part 7 1st vertical axis 8 2nd vertical axis 8a Cylindrical member 8b Support plate 9a-9d Horizontal axis 10 1st link (link member) 10a Side plate 10b Upper plate 10c Lower surface 11 Second link (link member) 11a Side plate 12 First arm (parallel link) 13 Second arm 14 Bracket 14a Upper plate 15 Fixed base 21 Horizontal axis 33 Partition plate 33a Vertical plate 33b Horizontal plate 33c Inclined plate 34 Mechanism 35 Coil spring 36 Engagement hole 37 Cover member 38 Locking part 39 Wiring storage space 40 Mounting plate 41 Tubular member 42 Support rod 43 Supporting member 44 Groove 45 Bar material 46 Wiring storage space 47 Locking piece 48 Locking groove 49 Adjustment Bolt (drag adjusting means) 50 Insertion hole 51 Vertical piece 52 Sliding plate (face plate) 53 Sliding member (friction portion) 54) Long groove 55 Nut (drag adjusting means) 56 Press plate 57 Hook piece 57a Hook portion 58 Bolt 58a Head 59 Lock plate 60 Nut 61 Shaft member 62 Cover member 63 Hex wrench 64 Handle member S Space

Continued on the front page (72) Inventor Harford Alexander 2-7-18 Kitako, Nishi-ku, Yokohama-shi, Kanagawa Prefecture Inside Okamura Works, Ltd. (72) Inventor Katsumi Taguchi 3-2-1, Matsubaracho, Akishima-shi, Tokyo Stock Company F-term in Tachi-S (reference) 5G435 AA14 BB12 DD03 DD11 EE06 EE08 EE13 EE16 EE19 GG41

Claims (5)

[Claims] 1. A display support device for supporting a display movably in an arbitrary direction by an arm having a fixed base at one end and a display at the other end, wherein at least a part of the arm is provided by two link members. At least the vertical movement of the display is performed by the rotation of the parallel link, and the relative parallel movement of the two link members is restricted via a friction member. A display support device, comprising: 2. The display support device according to claim 1, wherein a drag between the friction member and at least one of the link members is adjustable via a drag adjusting unit. 3. The display support device according to claim 1, wherein the friction member comprises a face plate that comes into planar contact with the link member. 4. The drag adjusting means is a bolt / nut holding the friction member and the link member, and a handle member for rotating the bolt around an axis is provided outside the parallel link. The display support device according to any one of claims 1 to 3, wherein the display support device is provided. 5. The friction member comprises a face plate slidably slidable in a longitudinal direction with respect to one of the link members, and a part of the face plate is perpendicular to the other link member. The display support device according to any one of claims 1 to 4, wherein the display support device is movably supported in a direction.