JP2002315628A - Elevating table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevating table to which a drive device can be easily attached, with excellent productivity. SOLUTION: In this elevating table 20, a table top 22 is moved upward/ downward according to the rotation of a turnable rod 2 with threads in a part by using a drive device 1. The drive device 1 has the turnable rod 2, a block 9 with a female screw engaged with the threads of the rod 2 for moving along the rod 2 according to the rotation of the rod 2, and wires 10a and 10b with one ends attached to the block 9. The other ends of the wires 10a and 10b are attached to an elevator guide 23 of the elevating table 20, and outer casings 14a and 14b of the wires are attached to a support guide 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating table capable of ascending and descending a top plate by a driving device.

[0002]

2. Description of the Related Art Heretofore, as this type of lift table, a lift table using a hydraulic drive device as shown in FIG. 5 has been known.

[0003] The lifting table is provided with a hydraulic pump 10
1, a pipe 102, and a table 103. The table 103 includes a top plate 103a, a guide 103b, and a support member 103c. One end of a rod of a hydraulic cylinder 103d fixed to the guide 103b is fixed to the support member 103c. Have been. As a result, when oil is supplied from the hydraulic pump to the hydraulic cylinder 103d, the hydraulic cylinder 103d moves upward in the drawing with respect to the rod, and the table rises. As the oil inside the cylinder decreases, the rod moves in the direction to enter the cylinder, and the table descends.

[0004]

However, since the above-described conventional lifting table requires oil for driving, maintenance is troublesome, and the hydraulic pump, piping,
In addition, a hydraulic cylinder was required at a minimum, the configuration of the driving device was complicated, the installation was complicated, and the productivity of the entire lifting table was low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a lifting table in which a driving device can be easily mounted and which is excellent in productivity.

[0006]

A top plate, a guide fixed to the lower surface of the top plate and provided below the top plate, a support member for supporting the guide slidably up and down, and rotatably. A provided screw rod, a moving body that is screwed to the screw rod, and moves along the screw rod according to the rotation of the screw rod, one end of which is attached to the moving body, and the other end of which is attached to the work. A driving device including a wire rod, a casing accommodating the moving body, and a wire rod covering one end of the wire rod fixed to the casing at one end, and the other end of the wire rod is provided. The wire cover is fixed to the guide, and the other end of the wire cover is fixed to the support member.

The elevating table includes a plurality of guides and a plurality of support members, respectively.
One end of the plurality of wires is attached, and the other end of the plurality of wires is connected to the plurality of guides, and the plurality of guides are slid in synchronization with the plurality of support members. I do.

[0008] The wire has an attachment portion at an end thereof, and the moving body is provided with a groove portion into which the attachment portion is fitted and a slit into which the wire is fitted. I do.

[0009]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the relative arrangements, numerical values, and the like of the components described in the embodiments are not intended to limit the scope of the present invention to them unless otherwise specified.

<Structure of Driving Apparatus> FIG. 1 is a view showing a structure of a driving apparatus 1 which can be used for a lifting table according to an embodiment of the present invention. FIG. 3B is a side view of the block shown in FIG. 3A as viewed from the left side, and FIG.

This driving device is in contact with a rod 2 having a trapezoidal thread cut on a part of the outer periphery in the axial direction as shown in the figure, a pair of sleeves 3a, 3b fitted from both sides of the rod 2, and a sleeve 3a. A thrust bearing 4 for rotatably supporting the rod 2 while receiving a leftward force of the rod 2 and the sleeve 3 so that the rod 2 rotates (rotates) smoothly regardless of the direction. It is configured. Also,
The surface of the thrust bearing 4 opposite to the surface in contact with the sleeve 3a is supported by the housing side plate 5,
Another housing side plate 6 is provided on the opposite side of the housing side plate 5 with the screw portion of the rod 2 interposed therebetween. The housing is constituted by the housing side plates 5, 6 and the plate 7 having both ends connected to the housing side plates. The plate 7 and the housing side plates 5 and 6 are fixed to each other with eight screws 8 (see FIG. 1B).

A block 9 is arranged inside the housing. The block 9 has a female screw portion screwed with the trapezoidal screw of the rod 2, and moves right and left in the figure by rotating the rod 2. Block 9 includes wires 10a, 10
b is attached. At the ends of the wires 10a and 10b, mounting portions 11a and 11b are provided, and the mounting portions 11a and 11b are provided in the groove 9a provided in the block 9.
9b. Also, as shown in (c), the block 9 is provided with slits 9c and 9d, wires 10a and 10b are fitted into the slits 9c and 9d from above and below in the figure, and pins 12a and 12b are inserted from the right side in the figure. I have. That is, the wires 10 a and 10 b are attached so as not to come off the block 9.

The wires 10a and 10b extend outside the housing through holes formed in the housing side plate 5, but outside the housing, the outer casing 14
a and 14b are connected to the work 16 through the interior. The end of the outer casing 14 is threaded and screwed into a screw hole of the housing side plate 5. Further, the bolt 1 is used to prevent the outer casing 14 from loosening.
5 is used. The other end of the outer casing 14 is also threaded, and is fixed to a member to be moved relative to the work 16.

On the other hand, the housing side plate 6 is provided with a hole through which the rod 2 passes, and a sliding bearing 13 is arranged between the hole and the rod 2.

Further, the housing side plates 5 and 6 are provided with screw holes 5a and 6a for attaching the apparatus to other members.
6b is provided.

<Operation of Driving Apparatus> The driving apparatus 1 configured as above moves the work 16 relative to the driving apparatus 1 in the direction of the arrow by rotating the rod 2. That is, assuming that the trapezoidal thread is cut in the direction as shown in the figure, the block 9 moves rightward in the figure by rotating the rod 2 in the direction of the arrow, and the wire 10
a, 10b are drawn into the housing, and the work 16 is moved leftward in the figure by the tension applied to the wires 10a, 10b. Here, the rotation of the rod 2 may be performed manually, or an electric motor may be used.

As described above, since the displacement of the block is transmitted to the work via the wire, complicated maintenance is not required unlike the conventional hydraulic pump, and the work can be mounted on the work only by screwing the outer casing and the wire. Therefore, attachment becomes extremely easy.

In FIG. 1, since two wires are attached to the block 9, two works (or two places of one work) attached to the two wires are used.
Can be moved synchronously or force can be applied.

The number of wires attached to the block 9 is not limited to two, and one wire or three or more wires can be attached by a simple design change of the block 9. Although the block 9 has a square side cross section, it may be circular. In that case, the housing also has a cylindrical shape with both ends closed. The wire and the outer casing are desirably made of metal such as SWRH62A, and the sliding surfaces thereof are desirably coated with grease (TSG3203) or the like in order to improve the slip. The block 9 has a configuration in which a female screw is simply cut in the inside. However, the configuration is not limited to this, and a configuration having a ball screw may be used.

<Elevating Table> Next, the structure and operation of the elevating table 20 using the driving device 1 will be described with reference to FIGS.

FIG. 2 is a conceptual diagram showing a mechanism for raising and lowering the table using the driving device 1, and shows a cross section of the driving device 1 and the table section 21.

Such a lifting table 20 includes a driving device 1 and a table 21, and the rod 2 of the driving device 1
A handle 17 is provided at an end protruding outside of the housing, so that the rod 2 can be easily rotated manually. The table unit 21 includes a top plate 22, an elevating guide 23 as a guide, and a supporting guide 24 as a supporting member. Further, the elevating guide 23 has a wire fixing bracket 23a, and the supporting guide 24 has an outer casing. A fixing bracket 24a is provided. Lifting guide 23
Is fixed to the lower surface of the top plate 22, and the support guide 24 is disposed on the floor. As shown in the figure, the wire 10a or 10b is fixed to the wire fixing bracket 23a, and the outer casing 14a or 14b is fixed to the outer casing fixing bracket 24a.

With this configuration, when the handle 17 is rotated to move the block 9 to the left in the figure,
Along with this, the wires 10a, 10b are pulled into the outer casings 14a, 14b, and the elevating guide 23 and the top plate 22 rise. If the handle 17 is released after the top 22 has been raised to a desired position, the block 9 is stopped by the friction between the block 9 and the rod 2, and the table 22 of the table is maintained at that position. It has become. Here, the block 9 is stationary due to friction, but another stationary means such as a clutch may be provided between the block 9 or the lifting guide 23 and the support guide 24.

FIG. 3 is a perspective view of the elevating table 20 on which the driving device 1 is actually mounted. In FIG. 2, the driving device 1 is described outside the table unit 21 for easy understanding, but the driving device 1 is actually attached to any component of the table unit 21. FIG. 3 shows a top plate 2 as an example.
2 shows a case where the driving device 1 is attached. The wire and the outer casing are arranged so as to crawl on the lower surface of the top plate, and are drawn inside the elevating guide 23.

FIG. 2 shows a case where two lifting guides 23 and two supporting guides 24 are provided for the top plate 22. However, the present invention is not limited to this. It may be the above. In the case of three or more wires, only a part thereof may be driven by a wire, and the other may be driven by the drive. 2 and 3, the support guide 24 is configured to be inserted inside the elevating guide 23. However, the present invention is not limited to this. It may be. Also, of course, the top plate 22
Alternatively, the elevating guide 23 and the support guide 24 may be substantially cylindrical.

According to such an elevating table, the table can be easily raised and lowered only by rotating the handle 17.
This is extremely easy, and the productivity is improved.

(Other Embodiment) Next, another embodiment of the lifting table using the driving device 1 will be described with reference to FIG.

FIG. 4 is a sectional view showing a part of a foot of a lifting table according to another embodiment.

In the above embodiment, the lifting guide 23
An outer casing fixing bracket 24a is provided on the support guide 24, and a wire 10a or 10b is provided on the wire fixing bracket 23a.
However, the outer casing 14a or 14b is fixed to the outer casing fixing bracket 24a. On the other hand, in the present embodiment, the elevating guide 23 is provided with the outer casing fixing bracket 23 b and the supporting guide 24.
Is provided with a wire fixing bracket 24b, the wire 10 is fixed to the wire fixing bracket 24b, and the outer casing 14 is fixed to the outer casing fixing bracket 23b.

With this configuration, the relative positional relationship between both ends of the outer casing 14 does not change as the table moves up and down, and the outer casing 14 itself does not move or deform. Becomes easier.

In the above-described embodiment, a wire is used for transmitting a force. However, any wire that can transmit a force to a work by moving a block as a moving body may be used.
The invention is not limited to this, and another wire may be used.

Although only the lifting table has been described as an application example of the driving device, it is needless to say that the driving device can be applied to various things such as a lifting cabinet and a lifting chair.

[0033]

According to the present invention, it is possible to provide a vertically movable table which can be easily mounted with a driving device and has excellent productivity.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a driving device according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing an elevating table according to one embodiment of the present invention.

FIG. 3 is a schematic perspective view of a lifting table according to an embodiment of the present invention.

FIG. 4 is a view showing a mechanism of a lifting table according to another embodiment of the present invention.

FIG. 5 is a conceptual diagram showing a conventional driving device and a lifting table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive device 2 Rod 3 Sleeve 4 Thrust bearing 5, 6 Housing side plate 7 Plate 9 Block 10a, 10b Wire 14a, 14b Outer casing 16 Work 20 Elevating table 21 Table part 22 Top plate 23 Elevating guide 24 Supporting guide

Claims (3)

[Claims] 1. A top plate, a guide fixed to a lower surface of the top plate, provided below the top plate, a support member for supporting the guide slidably up and down, and a screw rotatably provided. A rod and the screw rod are screwed together,
A moving body that moves along the threaded rod according to the rotation of the threaded rod, a wire rod having one end attached to the moving body and the other end attached to the work, a casing accommodating the moving body, and one end. A drive device comprising a wire cover surrounding the wire fixed to the casing, and the wire has the other end fixed to the guide, and
The lifting table, wherein the other end of the wire cover is fixed to the support member. 2. The lift table includes a plurality of guides and a plurality of support members, and one end of a plurality of wires is attached to the movable body.
2. The lifting table according to claim 1, wherein the other ends of the plurality of wires are connected to a plurality of the guides, and the plurality of guides are slid in synchronization with the plurality of support members. 3. . 3. The wire rod includes an attachment portion at an end thereof, wherein the movable body is provided with a groove portion into which the attachment portion is fitted, and a slit into which the wire is fitted. The lifting table according to claim 1 or 2,