JP2010144761A - Parallel link type instrument support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-to-operate parallel link type instrument support device which makes links rise and fall smoothly using an urging force of an urging means effectively. <P>SOLUTION: A base 6 is provided with a first guide groove 30, which consisting of a circular groove 30a formed in a circular shape around a pivot 21 of the link 19 and a curved groove 30b which is continuous from the end of the circular groove and curves to the side of the pivot 21 from the circular groove, and a second guide groove 31, which is separated from the first guide groove 30 in the circumferential direction of the pivot 21 and which forms a circular shape around the pivot 21. A first sliding body 32 and a second sliding body 33 engage the first guide groove 30 and second guide groove respectively so as to be slidable in the longitudinal direction of each of the guide grooves 30, 31 respectively. The first and second sliding bodies 32, 33 are urged by a plate spring 35 so as to be expanded mutually in the circumferential direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, two parallel ones having one end portion fixed to the stationary support body and the other end portion mounted on the apparatus side support body with pivot shafts parallel to each other and capable of rising from the standing position to the lying position. It is related with the parallel link type apparatus support apparatus which supported the apparatus so that parallel movement was possible by the parallel link mechanism which consists of this link.

  In the conventional device of this type, in addition to the first spring that urges the link from the standing position to the lying position and always erected in the standing direction, the link is raised from the intermediate position to the lying position. There is one provided with a second spring or an auxiliary spring that is biased toward (see, for example, Patent Document 1).

In addition, there is also one in which the second spring is effectively used even when the link is located between the standing position and the intermediate position (for example, see Patent Document 2).
Japanese Patent No. 3404567 (FIG. 13) Japanese Patent Laying-Open No. 2005-264970 (FIG. 3)

  However, what is described in Patent Document 1 is that when the link is positioned between the standing position and the intermediate position, the second spring is not used at all, and Patent Document 2 As for what is described, when the link is located between the standing position and the intermediate position, the second spring acts in the direction of tilting the link, and the second position with the intermediate position as the boundary. Since the biasing force of the spring is reversed, there is a problem that the feeling of operation when raising and lowering the link is not good.

  In view of the above-described problems of the prior art, the present invention can effectively utilize the urging force of the urging means corresponding to the above-described second spring so that the link can be smoothly raised and lowered. It is an object of the present invention to provide a parallel link type device support apparatus with good operability.

According to the present invention, the above problem is solved as follows.
(1) Two parallel ones, one end of which is fixed to the fixed support and the other end of the support to the equipment support, with pivots parallel to each other, which can be raised from the standing position to the lying position. In a parallel link type device support device that supports a device so that the device can be moved in parallel by a parallel link mechanism including links, the fixed side support body has an arc shape centered on a pivot on the fixed side of one link. A first guide groove consisting of an arc groove and a curved groove that is continuous from one end thereof and curves toward the pivot axis from the arc groove; and spaced apart from the first guide groove in the circumferential direction of the pivot axis; and A second guide groove having an arc shape centered on the pivot axis, the first guide groove in the first guide groove, the second slide body in the second guide groove, and the respective guide grooves. Fits as slidable in the longitudinal direction By urging the first and second sliding bodies by the urging means so as to expand each other in the circumferential direction, the first sliding body is moved to the front above the pivot of the one link. When the second sliding member is pressed against the edge and the front edge of the extension portion below the pivot of the one link, and the one link is located within the range from the standing position to the intermediate position. The first sliding body moves in the curved groove of the first guide groove and the second sliding body moves in the second guide groove, respectively, and the one link is in the range from the intermediate position to the lying down position. The first sliding body is loosely moved in the arcuate groove of the first guide groove, and the second sliding body is the one farther from the first guide groove in the second guide groove. Abut against the end so that it is separated from the extension of the one link

With such a configuration, when the link is located between the standing position and the intermediate position, the first sliding body is located outside the curved groove in the first guide groove by the urging force of the urging means. The second sliding member is pressed against the outer edge of the second guide groove, and an appropriate braking force is applied to the rotation of the link by the frictional force between them. Since the curved groove in the guide groove of 1 is curved closer to the pivot, the first sliding body approaches the pivot of the link as the link moves toward the standing position, and the first slide with respect to the outer edge of the curved groove. The pressing force of the moving body is increased, and the holding force of the link is increased.
When the link is lowered from the standing position, the first sliding body moves in a direction away from the pivot axis at the initial stage. Therefore, the sliding resistance of the first sliding body with respect to the outer edge of the curved groove at this time is It is smaller than that when moving in the reverse direction, and it is possible to start to tilt the link forward with light force. Thereafter, the link can be rotated to an intermediate position while resisting moderate resistance. From the intermediate position, the urging force of the urging means acts directly on the link, and the urging force acts in the direction opposite to the moment of trying to overturn the link due to the weight of the device, etc. To balance.
In this way, not only when the link is located between the intermediate position and the lying position, but also when the link is located between the standing position and the intermediate position, the urging force of the urging means is made effective. It can be utilized and the link can be raised and lowered smoothly.

  (2) Two parallel ones that are pivotally attached to one end on the stationary support and the other on the equipment support with pivots parallel to each other so that they can be tilted from the standing position to the lying position. In a parallel link type device support device that supports a device so that the device can be moved in parallel by a parallel link mechanism including links, the fixed side support body has an arc shape centered on a pivot on the fixed side of one link. A first guide groove comprising an arc groove, a curved groove which is continuous from one end thereof and is curved so as to bulge away from the pivot axis from the arc groove, and a circle of the pivot axis from the first guide groove; A second guide groove having an arc shape centered on the pivot axis and spaced apart in the circumferential direction is provided. The first guide body is provided in the first guide groove, and the second slide is provided in the second guide groove. The moving body is the length of each guide groove. The first sliding body is slidably fitted in the direction, and the first and second sliding bodies are urged so as to expand in the circumferential direction by the urging means. The first slide is brought into pressure contact with the front edge above the pivot in one link and the second sliding body is brought into pressure contact with the front edge of the extension below the pivot in the one link, so that the one link moves from the standing position to the intermediate position. When the first sliding member moves within the curved groove of the first guide groove and the second sliding member idles within the second guide groove, the one link Is located within the range from the intermediate position to the lying down position, the first sliding body is loosely moved in the arc groove of the first guide groove, and the second sliding body is in the second guide groove. An extension of the one link in contact with the end far from the first guide groove To as to be separated from.

With such a configuration, when the link is located between the standing position and the intermediate position, the first sliding body is located outside the curved groove in the first guide groove by the urging force of the urging means. The second sliding member is pressed against the outer edge of the second guide groove, and an appropriate braking force is applied to the rotation of the link by the frictional force between them. Since the curved groove in the one guide groove is curved so as to bulge away from the pivot axis in the direction away from the arcuate groove, when the link rotates from the standing position to the intermediate position or in the opposite direction, the link A moderate feeling of moderation is imparted to the rotation of the lens, and operability can be improved.
Further, not only when the link is located between the intermediate position and the lying position, but also when the link is located between the standing position and the intermediate position, the urging force of the urging means is effectively utilized. And the link can be raised and lowered smoothly.

  (3) In the above item (2), the outer edge of the curved groove in the first guide groove has a shape protruding in a mountain shape in a direction away from the pivot on the fixed side of one link.

  With such a configuration, it is possible to sharpen the sense of moderation that occurs when the link is rotated.

  (4) In any one of the above items (1) to (3), the biasing means is configured such that the front surface of the intermediate portion is pressed against the pivot on the fixed side of one link from the rear, and the upper and lower ends are the first and The leaf spring is pressed against the inside of the second sliding body and biases both sliding bodies in the direction of expanding each other.

  With such a configuration, the structure of the urging means can be simplified and can be easily manufactured.

  (5) In any one of the above items (1) to (3), the urging means is configured such that the winding portion around which the wire is wound is loosely fitted to the pivot on the fixed side of one link, and both ends of the winding portion. A torsion coil in which a pair of extending end portions of a wire extending in a direction further away from the winding portion is pressed against the inside of the first and second sliding bodies and biases both sliding bodies in the direction of expanding each other. A spring.

  With this configuration, the urging means can be easily assembled and the urging means can be easily obtained.

  According to the present invention, it is possible to provide a parallel-link type apparatus support device with good operability that can effectively use the urging force of the urging means and smoothly raise and lower the link.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 6 show a first embodiment of the present invention, and FIGS. 1 and 2 illustrate a base end portion of a parallel link type device support device 1 of the present invention as an end portion of a desk top plate 2. The state which attached with the vise type holder 3 and attached the liquid crystal display 4 as an apparatus to the front-end | tip part is shown.

  As shown in FIG. 1, the parallel-link device support device 1 includes a base 6 as a fixed-side support that is rotatably mounted on a vertical shaft 5 erected on a holder 3 (this base 6 is a vertical support). Although it can be rotated around the shaft 5, for the sake of easy explanation, the following description will be made assuming that it is stopped at a position facing forward), and the base 6 is connected to the lower end via the joint portion 7. A lower arm 8 that is pivoted and capable of rising from a standing position facing upward to a lying position facing forward, and an upper end when the standing position of the lower arm 8 is set to the joint 9 The upper end 10 is pivotally attached to the front end of the upper arm 10 with the rear end pivoted and the front end pivotable in the vertical direction. The lower end is pivotable in the front-rear direction and Bracket 12 projecting from the rear surface of the liquid crystal display 4, and a mounting arm 14 which is pivotally mounted as swingably in the vertical and lateral directions via the joint portion 13.

  The joints 7, 9, 11, and 13 to which the arms 8, 10, and 14 are connected can be rotated by a predetermined angle around an axis that faces in the left-right direction, and the user moves the liquid crystal display 4 up and down or front and rear. When these are moved, the plurality of joints 7, 9, 11, and 13 are rotated so that the liquid crystal display 4 can be moved to an arbitrary position on the desk 2 and supported.

  The outer sides of the lower arm 8 and the upper arm 10 shown in FIG. 1 are covered with covers 15 and 16, and by opening or removing the opening / closing portions 15 a and 16 a that are a part of the covers 15 and 16, An electric cable 17 connected to the liquid crystal display 4 can be disposed inside the covers 15 and 16.

As shown in FIG. 2, a joint plate 18 having a semicircular shape or a disc shape is disposed in the joint portion 9, and in the cover 15 of the lower arm 8, the front and rear 1 are parallel to each other. A pair of thick plate-like links 19 and 20 are provided. As shown in FIG. 4, each link 19, 20 is arranged in a pair on the left and right.
The lower ends of the front links 19, 19 are pivotally attached to both side surfaces of the center portion of the circular portion of the base 6 with left and right pivots 21. Similarly, the upper end portions are both side surfaces of the center portion of the joint plate 18. Further, it is pivotally attached with a pivot 22 in the left-right direction.
The lower ends of the rear links 20, 20 are pivotally attached to both side surfaces of a portion of the base 6 rearward and upper than the pivot 21 with a pivot 23 in the left-right direction, and the upper end is also pivoted from the pivot 22 of the joint plate 18. Left and right pivots 24 are pivotally attached to both side surfaces of the rear upper part.

  A first-stage parallel link mechanism A is formed by the base 6 that forms the fixed-side support, the joint plate 18 that forms the equipment-side support, the front and rear links 19 and 20, and the pivots 21 to 24. Accordingly, the liquid crystal display 4 as a device is supported so as to be movable in the front-back direction.

  In the upper arm 10, a second-stage parallel link including a pair of parallel links 26 and 27 that connect the joint plate 18 in the joint portion 9 and the joint plate 25 in the joint portion 11. Although the mechanism B is provided, the parallel link mechanism B is not directly related to the present invention, and thus detailed description thereof is omitted.

  As shown in FIG. 2, between the upper part of the link 19 and the lower part of the link 20 in the parallel link mechanism A, each end part of the tension coil spring 28 constituting the first urging means is locked. Thus, the parallel link mechanism A is urged in a direction in which it always stands up.

  Further, between the front part of the lower link 26 and the rear part of the upper link 27 in the parallel link mechanism B, each end part of the tension coil spring 29 constituting the second urging means is locked. Thus, the parallel link mechanism B is always urged in a direction to stand up.

  As shown in FIGS. 3 and 4, the upper portion of the base 5 has a hollow disk shape, and the pivots 21 on the front side of the pivots 21 on both sides are centered on the pivots 21 on the fixed side of the front link 19. An arcuate groove 30a having an arcuate shape, a first guide groove 30 comprising a curved groove 30b which is continuous from the upper end of the arcuate groove and curves toward the pivot 21 from the arc groove 30a, and the pivot 21 from the first guide groove 30 A second guide groove 31 that is spaced apart in the circumferential direction around the center and has an arc shape centered on the pivot 21 is provided.

The first guide groove 30 includes a first sliding body 32 that forms an axis in the left-right direction, and the second guide groove 31 includes a second sliding body 33 that forms an axis in the left-right direction. The grooves 30 and 31 are fitted so as to be slidable in the longitudinal direction and penetrating in the left-right direction.
A pair of left and right rollers 34, 34 made of a buffer material such as rubber or synthetic resin are pivotally fitted (or fixedly fitted) to both ends of the second sliding body 33 penetrating the base 5.

  In the hollow portion of the base 5, the front surface of the intermediate portion in the vertical direction is pressed against the pivot 21 from the rear, and the upper and lower end portions are pressed into the first and second sliding bodies 32, 33. A leaf spring 35, which is a third urging means, is provided which is bent in an L shape in a side view and urges the sliding bodies 32 and 33 in the direction of expanding each other.

  Due to the restoring force of the leaf spring 35 to return linearly, the first sliding body 32 is a roller fitted to the front edge of the link 19 above the pivot 21 and to both ends of the second sliding body 33. 34 are respectively pressed against the front edge of the extension 19a below the pivot 21 in the link 19, and the link 19 is located within the range from the standing position shown in FIG. 3 to the intermediate position shown in FIG. The first slide body 32 moves freely in the curved groove 30b of the first guide groove 30 and the second slide body 33 moves freely in the second guide groove 31, respectively. 6, the first sliding body 32 floats in the arc groove 30 a of the first guide groove 30, and the second sliding body 33 is in the second position. The end of the guide groove 31 far from the first guide groove 30 In contact with, so as to separate from the extension of the link 19.

  Therefore, when the link 19 is located between the standing position and the intermediate position, the first sliding body 32 is edged outside the curved groove 30 b in the first guide groove 30 by the urging force of the leaf spring 35. In addition, the second sliding member 33 is pressed against the outer edge of the second guide groove 31, and an appropriate braking force is applied to the rotation of the link 19 by the frictional force between them. Since the curved groove 30b in the first guide groove 30 is curved toward the pivot 21, the first sliding body 32 approaches the pivot 21 as the link 19 moves toward the standing position, and the outside of the curved groove 30b. The pressing force of the first sliding body 32 against the edge of the link 19 increases, and the holding force of the link 19 increases.

When the link 19 is laid down from the standing position, the first sliding body 32 moves in the direction away from the pivot 21 at the initial stage, so that the first sliding body 32 of the first sliding body 32 with respect to the outer edge of the curved groove 30b at this time is moved. The sliding resistance is smaller than that at the time of moving in the reverse direction, and the link 19 can be started to lean forward with a light force. Thereafter, the link 19 is rotated to an intermediate position while resisting an appropriate resistance force. be able to.
From the intermediate position, the urging force of the leaf spring 35 acts directly on the link 19, and the urging force acts in a direction opposite to the moment that causes the link 19 to fall down due to the weight of the liquid crystal display 4 or the like. Balance with the weight of display 4 etc.
Thus, not only when the link 19 is located between the intermediate position and the lying position, but also when the link 19 is located between the standing position and the intermediate position, the biasing force of the leaf spring 35 is reduced. While being able to utilize effectively, the link 19 can be raised and lowered smoothly.

  Other configurations and operations are the same as those described in Patent Document 2 described above, and since they are not directly related to the present invention, detailed description thereof is omitted.

FIG. 7 shows a second embodiment of the present invention. Note that the same or similar members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted (the same applies to the third embodiment).
In this embodiment, the curved groove 30b in the first guide groove 30 is curved so as to continue from the upper end of the arc groove 30a and bulge out in an arc shape in a direction away from the pivot 21 from the arc groove 30a. As a shape.

As an urging means replacing the above-described leaf spring 35, a winding portion 36a around which a wire is wound is loosely fitted to the pivot 21 and extends in a direction away from the winding portion 36a from both ends of the winding portion 36a. A torsion coil spring in which a pair of extended end portions 36b, 36c of the wire rod is pressed against the inside of the first and second sliding bodies 32, 33 and urges the sliding bodies 32, 33 in the direction of expanding each other. 36 is adopted.
Other configurations are the same as those of the first embodiment.

  With this configuration, when the link 19 is positioned between the standing position and the intermediate position, the first sliding body 32 is moved in the first guide groove 30 by the urging force of the torsion coil spring 36. The second sliding member 33 is pressed against the outer edge of the curved groove 30b, and the outer edge of the second guide groove 31 is pressed. A braking force is applied and the curved groove 30b in the first guide groove 30 is curved so as to bulge away from the pivot 21 from the arc groove 30a, so that the link 19 is intermediate from the standing position. When rotating in the position or in the opposite direction, an appropriate moderation feeling, that is, a click feeling is given to the rotation of the link 19, and the operability can be improved.

  The biasing force of the torsion coil spring 36 is effective not only when the link 19 is located between the intermediate position and the lying position but also when the link 19 is located between the standing position and the intermediate position. The link 19 can be raised and lowered smoothly.

  Furthermore, the torsion coil spring 36 can be easily assembled and the torsion coil spring 36 as the biasing means can be easily obtained.

FIG. 8 shows a third embodiment of the present invention.
In this embodiment, the outer edge of the curved groove 30b in the first guide groove 30 has a shape protruding in a mountain shape in a direction away from the pivot 21, so that the curved groove 30b is continuous from the upper end of the arc groove 30a. In addition, the arc groove 30a bulges in an arc shape in a direction away from the pivot 21.
Further, as the urging means, a torsion coil spring 36 similar to that shown in FIG. 7 is adopted.

  By adopting such a configuration, it is possible to sharpen the moderation feeling generated when the link 19 is rotated.

  As mentioned above, although embodiment of this invention has been described based on drawing, this invention is not limited to these embodiment, In the range which does not deviate from a claim, it implements in the various deformation | transformation aspect. Is possible.

  For example, in the above-described embodiment, when the link 19 is in the standing position, the link 19 is directed almost directly above (elevation angle 90 degrees), and when the link 19 is in the intermediate position, it is tilted forward by approximately 45 degrees (elevation angle 45 degrees). In the lying position, it is assumed that it faces slightly upward from the horizontal (an elevation angle of 15 degrees), but each of these positions is relative, and the standing position is located before the position where the link 19 faces directly above. Inclined or tilted backward (elevation angle 90 ± α), lying down, leveling forward or tilting forward and downward (elevation angle 0 ± β), intermediate position, It can be set to an arbitrary position between the standing position and the lying position.

  Alternatively, all of the upper arm 10 to the joint portion 13 may be omitted, and a device such as the liquid crystal display 4 may be attached to the joint plate 18 and supported so that the device can be translated in the front-rear direction.

  Furthermore, it is possible to omit the roller 34.

It is a perspective view which shows the state which attached the base end part in the 1st Embodiment of this invention to the top plate of a desk, and attached the liquid crystal display as an apparatus to the front-end | tip part. It is a side view which shows the internal structure of a parallel link type apparatus support apparatus. It is a side view of a base part when a lower arm is a standing position. It is the IV-IV sectional view taken on the line in FIG. It is a side view of a base part when a lower arm is an intermediate position. It is a side view of a base part when a lower arm is a lying position. It is a side view of the part similar to FIG. 3 in the 2nd Embodiment of this invention. It is a side view of the part similar to FIG. 3 in the 3rd Embodiment of this invention.

Explanation of symbols

A, B Parallel link mechanism 1 Parallel link type device support device 2 Top plate 3 Holder 4 Liquid crystal display (device)
5 Vertical axis 6 Base (fixed side support)
7 Joint part 8 Lower arm 9 Joint part 10 Upper arm 11 Joint part 12 Bracket 13 Joint part 14 Mounting arm 15, 16 Cover 15a, 16a Opening / closing part 17 Electric cable 18 Joint plate 19, 20 Link 19a extension part 21-24 Axis 25 Joint plate 26, 27 Link 28, 29 Tension coil spring 30 First guide groove 30a Arc groove 30b Curved groove 31 Second guide groove 32 First slide body 33 Second slide body 34 Roller 35 Leaf spring (biasing force) means)
36 Torsion coil spring (biasing means)
36a winding part 36b, 36c extension end part

Claims (5)

One end is fixed to the fixed support and the other end is connected to the equipment support with pivots that are parallel to each other, and consists of two parallel links that can be tilted from the standing position to the lying position. In the parallel link type equipment support device that supports the equipment as being movable by the parallel link mechanism,
A first circular arc groove having an arc shape centered on the pivot axis on the fixed side of one link and a curved groove that is continuous from one end of the link and curves toward the pivot axis from the arc groove. And a second guide groove which is spaced apart from the first guide groove in the circumferential direction of the pivot and has an arc shape centered on the pivot, and the first guide groove has a first guide groove. And the second guide groove in the second guide groove so as to be slidable in the longitudinal direction of each guide groove, and the first and second slide bodies are fitted by the biasing means. By urging each other so as to expand in the circumferential direction, the first sliding body is placed on the front edge above the pivot of the one link, and the second sliding body is placed on the one link. Press against the leading edge of the extension below the pivot, respectively. The first sliding body is in the curved groove of the first guide groove, and the second sliding body is in the second guide groove. When the one link is in the range from the intermediate position to the lying down position, the first sliding body moves freely in the arc groove of the first guide groove, and the second slide The parallel link type apparatus supporting apparatus, wherein the moving body is in contact with an end portion of the second guide groove that is far from the first guide groove and is separated from the extension portion of the one link. One end is fixed to the fixed support and the other end is connected to the equipment support with pivots that are parallel to each other, and consists of two parallel links that can be tilted from the standing position to the lying position. In the parallel link type equipment support device that supports the equipment as being movable by the parallel link mechanism,
An arc groove having an arc shape centering on the pivot axis on the fixed side of one link and a curved line extending from the arc groove in a direction away from the pivot axis. A first guide groove comprising a curved groove, and a second guide groove spaced apart from the first guide groove in the circumferential direction of the pivot and having an arc shape centered on the pivot, A first sliding body is fitted in one guide groove, and a second sliding body is fitted in the second guide groove so as to be slidable in the longitudinal direction of each guide groove, and the first and second sliding bodies are fitted. By urging the moving body so as to expand in the circumferential direction by the urging means, the first sliding body is moved to the front edge above the pivot in the one link, and the second sliding body. On the leading edge of the extension below the pivot on the one link. When the one link is positioned within the range from the standing position to the intermediate position, the first sliding body is in the curved groove of the first guide groove, and the second sliding body is in the first position. When the one link is located within the range from the intermediate position to the lying down position, the first sliding body floats in the arc groove of the first guide groove. The parallel link is characterized in that the second sliding body abuts on an end portion of the second guide groove far from the first guide groove and is separated from the extension portion of the one link. Type equipment support device.   The parallel link type apparatus supporting device according to claim 2, wherein the outer edge of the curved groove in the first guide groove is formed to project in a mountain shape in a direction away from the pivot on the fixed side of one link.   The biasing means is configured such that the front surface of the intermediate portion is pressed against the pivot on the fixed side of one link from the rear, and the upper and lower ends are pressed against the inside of the first and second sliding bodies so that both sliding bodies are expanded. The parallel link type apparatus support device according to any one of claims 1 to 3, wherein the plate spring is urged in an opening direction.   The urging means is a pair of wire rods in which the winding portion around which the wire is wound is loosely fitted on the pivot on the fixed side of one link and extends away from the winding portion from both ends of the winding portion. The parallel link type according to any one of claims 1 to 3, wherein the extended end portion is a torsion coil spring that is pressed against the inside of the first and second sliding bodies and biases both sliding bodies in the direction of expanding each other. Equipment support device.

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