JPH0246835B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Application of the Invention) The present invention is attached to the legs or bottom of various types of equipment such as press machines to facilitate movement, vibration isolation and stability of the equipment, and to improve the level of the equipment. This invention relates to an improvement in a mobile stabilizer for equipment that can adjust the

(Background of the Invention) Conventionally, devices have been equipped with wheels for moving equipment and vibration isolators that stably install the moved equipment and buffer vibrations of the equipment itself or external vibrations. A mobile stabilizer for equipment is already known from, for example, Japanese Utility Model Publication No. 13566/1983, which was invented by the inventor of the present application.

FIG. 8 is a sectional view showing an example of the above-mentioned prior art. Reference numeral 1 denotes a mounting nut fixed to the leg or bottom of the device, and a screw hole 2 is provided in the center thereof into which a mounting bolt (not shown) is screwed. Reference numeral 3 denotes a ring-shaped handle for vertically moving the vibration isolator 4 made of synthetic rubber, synthetic resin, or the like. 5 is a frame rotatably attached to the mounting nut 1 via a thrust cover, which will be described later, and 6 is a single moving wheel.

An annular groove 7 is formed inside the mounting nut 1, and the upper end of a thrust cover 10 rotatably held by steel balls 8 and 9 is accommodated in the annular groove 7. The thrust cover 10 and the steel balls 8, 9 are supported by a thrust washer 11 fixed to the mounting nut 1. The lower end of the thrust cover 10 expands into a brim shape and is welded to the upper end of the frame 5. Handle 3 located outside the thrust cover 10
is supported by its bottom surface resting on the flanged lower end of the thrust cover 10. A gear portion 12 is provided on the inner peripheral surface of the handle 3. The frame 5 is formed with a cylindrical portion 13 into which the vibration isolator 4 is fitted, and a parallel portion 15 onto which the moving wheels 6 are attached via a shaft 14.

A gear stopper 16 fits into the upper part of the frame 5, and in this gear stopper 16, the frame 5
A hole is provided at a position eccentric from the center 17, and an adjustment bolt 18 is disposed passing through this hole. A pinion gear 19 is fixed to the upper part of the adjustment bolt 18 so as to rotate together with the pinion gear 19, and a part of the pinion gear 19 passes through the window of the thrust cover 10 and meshes with the gear part 12 of the handle 3. A gear thrust 20 is provided above the pinion gear 19. The vibration isolator 4 is formed to fit into the inner wall of the cylindrical portion 13 of the frame 5, and is attached to an adjustment nut 21 that is screwed into an adjustment bolt 18.

Three or more of the above equipment movement stabilizers are attached to the legs or bottom of the equipment. In the state shown in FIG. 8, the moving wheels 6 are in contact with an installation surface (not shown) such as a floor. By pushing the device in a desired direction, the moving wheels 6 are rolled and the device can be moved in the desired direction. When changing the moving direction, by changing the pushing direction of the equipment, resistance against the installation surface of the moving wheels 6 acts on the frame 5 and the thrust cover 10, and the thrust cover 10 rotates between the steel balls 8 and 9. The orientation of the frame 5 and moving wheels 6 is changed in the moving direction.

When installing the device in the desired position, hold the frame 5 so that it does not rotate and press the handle 3.
Rotate in the specified direction. When the adjustment bolt 18 rotates through the pinion gear 19 due to the rotation of the handle 3, the vibration isolator 4 and the adjustment nut 21 are prevented from rotating by the frame 5, so they descend along the adjustment bolt 18. . If the vibration isolator 4 is further lowered even after the lower end surface of the vibration isolator 4 contacts the installation surface, the moving wheels 6 will move upward away from the installation surface.

As described above, in the conventional example shown in FIG. 8, the moving wheels 6 are raised above the installation surface by rotating the handle 3, and at the same time, the vibration isolation device that supports the equipment between the equipment and the installation surface is provided. A body 4 is interposed therebetween.

However, in the above conventional example, components such as the pinion gear 19, adjustment bolt 18, and adjustment nut 21 are essential for converting the rotational movement of the handle 3 into the vertical movement of the vibration isolator 4, and the number of parts increases. There was a problem.

Also, since the adjuster bolt 18 has a small diameter,
There was also a problem in that the strength and effective screwing area of the threaded portion with the adjuster nut 21 could not be increased, and loosening due to breakage or vibration was likely to occur.

In order to create a structure that does not use component parts such as the pinion gear 19 and adjuster bolt 18, the inventor of the present application designed the handle member to cover the outside of a single wheel for transportation, and the inner circumferential surface of the handle member A mobile stabilizer for equipment has already been proposed in which a female thread is formed and the handle member is directly screwed into the vibration isolator holding member. (Refer to Japanese Unexamined Patent Publication No. 63-232001.) However, in this case, since the handle member is shaped to cover the outside of the single wheel for transportation, the diameter of the female thread on the inner peripheral surface of the handle member is Since the diameter of the handle member is not much different from that of the handle portion of the handle member, a new problem arises in that the rotating operation of the handle member becomes difficult. If the diameter of the handle is made larger, the rotation operation can be made easier, but the handle takes up space, which is a nuisance and is not aesthetically pleasing.

(Objective of the Invention) The object of the present invention is to solve the above-mentioned problems, reduce the number of parts, and increase the strength and effective threaded area of the threaded portion of the member for raising and lowering the vibration isolator. To provide a moving stabilizer for equipment, which can be used to rotate a handle member, and which can lighten the rotational operation of a handle member.

(Features of the Invention) In order to achieve the above object, the present invention includes a connecting portion attached to a fixed member in a frame, a vibration isolator holding member housing space that is open both above and below around the connecting portion, and , a handle member receiving part for receiving a handle member outside the vibration isolator holding member housing space, and an axle support part for supporting an axle of a moving wheel; a vibration isolator holding member having a threaded portion formed on its surface; At the bottom of the
A handle member having the vibration isolator integrally fixed thereto and having a female threaded portion formed on an inner circumferential surface is rotatably received by the handle member receiving portion with respect to the frame, and the female threaded portion is connected to the vibration absorber. Disposed around the vibration isolator holding member so as to be screwed into the male threaded portion of the vibration isolator holding member, and placed at both ends of the axle supported by the axle support at a position outside the handle member receiving portion. Attach two moving wheels, and directly screw the female thread on the inner circumferential surface of the handle member placed around the vibration isolator holding member to the male thread on the upper outer circumference of the vibration isolator holding member. In addition to eliminating the need for conventional adjusting bolts, the diameter of the female threaded part of the handle member is made larger than the diameter of the conventional adjusting bolt, and the wheels for transportation are made of twin wheels, which are positioned on the outside of the handle member. By doing so, the ratio of the diameter of the female threaded portion to the diameter of the handle portion of the handle member is reduced.

(Embodiment of the invention) Figures 1 to 6 show an embodiment of the invention. This embodiment is suitable for those in which the maximum load per piece is 100 kg or less.

Reference numeral 30 denotes a support corresponding to the fixing member of the present invention, and has a male threaded portion 30a, a collar portion 30b, and a caulked portion 30c. The mounting nut 31 is screwed into the externally threaded portion 30a of the support column 30 from above, fits into the flange portion 30b, and functions as a seat when attached to a device.

From below, the support 30 includes a thrust washer 32, a ball 33, a thrust washer 34, and a handle member 3.
5. The vibration isolator holding member 36, the vibration isolator 37, and the frame 38 are inserted, and the stop washer 39 is attached to the column 30 by caulking the caulking portion 30c. The thrust washer 32 contacts the lower end surface of the mounting nut 31, and together with the ball 33 and the thrust washer 34 constitutes a thrust bearing. Thrust washer 32
receives the thrust force of the handle member 35, and the thrust washer 34 receives the thrust force of the frame 38. The frame 38 forms a cylindrical connecting portion 38a that is slidably and rotatably attached around the support column 30, a vibration isolator holding member housing space 38b that is open both above and below around the connecting portion 38a, and a handle member 35. It includes a handle member receiving portion 38c and an axle support portion 38d for receiving the handle member. The frame 38 is rotatably attached to the column 30 by determining the mounting position of the connecting portion 38a on the column 30 between the thrust washer 34 and the stop washer 39.

The vibration isolator holding member housing space 38b has a horseshoe-shaped planar shape, as shown in FIG.
A vibration isolator holding member 36 having a horseshoe-shaped horizontal cross section is housed in the vibration isolator holding member housing space 38b so as to be movable up and down. The vibration isolator holding member 36 is obstructed by the axle support portion 38d and cannot rotate relative to the frame 38. A male threaded portion 36a is formed on the upper outer peripheral surface of the vibration isolator holding member 36, and the male threaded portion 36a is connected to the handle member receiving portion 38c of the frame 38.
protrudes above. A vibration isolator 37 is integrally fixed to the lower part of the vibration isolator holding member 36, and the vibration isolator 37 projects below the handle member receiving portion 38c. The handle member 35 is arranged around the vibration isolator holding member 36, and is connected to the handle member receiving portion 38c and the thrust washer 3.
The internal threaded portion 35a, which is rotatably assembled between the handle member 35 and the handle member 35, is
It is threadedly engaged with the male threaded portion 36a of the vibration isolator holding member 36. Thus, the handle member 35 is rotatably arranged relative to the column 30 and frame 38.

An axle 40 is attached to the axle support portion 38d of the frame 38.
is supported, and two moving wheels 4 are provided at both ends of the axle 40 at positions outside the handle member receiving portion 38c.
1,42 are attached.

Three or more of the device movement stabilizers described above are attached to the legs or bottom of a device such as a press device. The mounting method is to insert the male threaded part 30a of the support column 30 into a mounting hole (not shown) in the leg or bottom of the device, and screw the nut into the male threaded part 30a to fix it. In the state shown in FIGS. 1 to 6, the moving wheels 41 and 42 are in contact with an installation surface (not shown) such as a floor. By pushing the device in a desired direction, the moving wheels 41, 42 are rolled,
It can be moved in the desired direction. When changing the direction of movement, change the direction in which the device is pushed.
Resistance against the installation surface of the moving wheels 41 and 42 acts on the frame 38 and the thrust washer 34, and the support 3
Since it acts as a rotational force centered on 0, the rotation of the ball 33 causes the orientation of the frame 38 and the moving wheels 41, 42 to freely follow the direction of movement. At this time, the weight of the device is the support 30 or mounting nut 31, thrust washer 32, ball 33,
Thrust washer 34 and connecting portion 38 of frame 38
a, the load is applied to the installation surface via the axle support portion 38d, the axle 40, and the moving wheels 41 and 42. Since the handle member 35 is in an unloaded state, the thrust washer 32
A gap is created between the frame 38 and the handle member receiving portion 38b of the frame 38. Therefore, when the frame 38 rotates with respect to the support column 30, the handle member 35 also rotates together, and the screwing position between the female threaded portion 35a of the handle member 35 and the male threaded portion 36a of the vibration isolator holding member 36 is determined. It does not change.

When installing the equipment in a desired position, hold the frame 38 so that it does not rotate, or if the frictional resistance between the installation surface and the moving wheels 41, 42 becomes large due to the weight of the equipment. The handle member 35 is rotated in a predetermined direction. Since the vibration isolator holding member 36 is prevented from rotating by the axle support portion 38d of the frame 38,
As the handle member 35 rotates, the screwing position between the male threaded portion 36a of the vibration isolator holding member 36 and the female threaded portion 35a of the handle member 35 changes, and the rotational movement of the handle member 35 causes the vibration isolator holding member 36 to rotate. This is converted into a descending motion, and the vibration isolator 37 descends.

If the vibration isolator 37 is further lowered even after the lower end surface of the vibration isolator 37 contacts the installation surface, the moving wheels 41,
42 rises away from the installation surface. At this time, the weight of the device is the support 30 or the mounting nut 31, the thrust washer 32, the handle member 35, and the female threaded part 3.
The load is applied to the installation surface via the screwed portion between the vibration absorber 5a and the male thread portion 36a, the vibration isolator holding member 36, and the vibration isolator 37. In addition, with the vibration isolator 37 in contact with the installation surface,
Level adjustment is performed by rotating the handle member 35.

In this embodiment, the female threaded portion 35a of the handle member 35 is connected to the male threaded portion 35 of the vibration isolator holding member 36.
Since it is directly screwed into a, it is possible to eliminate the need for conventional adjustment bolts, etc.
The number of parts can be reduced.

When the vibration isolator 37 is in contact with the installation surface, the weight of the device is transmitted through the threaded portion between the female threaded portion 35a and the male threaded portion 36a, so it is inevitable that the rotation operation of the handle member 35 becomes heavy. . The lightness of this rotational movement is proportional to (the length X from the center of the strut 30 to the handle portion of the handle member 35)/(the length Y from the center of the strut 30 to the female threaded portion 35a). In this embodiment, the moving wheels 41 and 42 are twin wheels and are positioned outside the handle member receiving portion 38c, so that the diameter of the female threaded portion 35a of the handle member 35, that is, the length Y is reduced. Therefore, the rotation operation of the handle member 35 can be made easier.

FIG. 7 shows another embodiment of the invention. In this embodiment, the maximum load per piece is 100 kg or more. Components similar to those in FIGS. 1 to 6 are designated by the same reference numerals.

The biggest difference between this embodiment and the embodiment shown in FIGS. 1 to 6 is (Length X from the center of the strut 30 to the handle portion of the handle member 35)/(Length from the center of the strut 30 to the female threaded portion 35a) Y) is made larger to make the rotation operation of the handle member 35 even easier.

Moreover, the handle member 35 is attached to the mounting nut 32.
Annular thrust washer 4 attached to the lower end surface of
It has become close to 3.

(Modification) The support column 30 and the mounting nut 31 may be integrally molded. In addition, the vibration isolator holding member 36
and the vibration isolator 37 may be integrally molded.

(Effects of the Invention) As explained above, according to the present invention, a connecting portion attached to a fixed member is formed in a frame, a vibration isolator holding member housing space that is open both above and below around the connecting portion is formed, and , a handle member receiving part for receiving a handle member outside the vibration isolator holding member housing space, and an axle support part for supporting an axle of a moving wheel; A vibration isolator holding member having a threaded portion formed on its surface is housed so that its upper part projects upwardly from the vibration isolator holding member housing space and can be rotated and raised and lowered, and the vibration isolator holding member At the bottom of the member,
A handle member having the vibration isolator integrally fixed thereto and having a female threaded portion formed on an inner circumferential surface is rotatably received by the handle member receiving portion with respect to the frame, and the female threaded portion is connected to the vibration absorber. Disposed around the vibration isolator holding member so as to be screwed into the male threaded portion of the vibration isolator holding member, and placed at both ends of the axle supported by the axle support at a position outside the handle member receiving portion. Attach two moving wheels, and directly screw the female thread on the inner circumferential surface of the handle member placed around the vibration isolator holding member to the male thread on the upper outer circumference of the vibration isolator holding member. This eliminates the need for conventional adjusting bolts, and since the diameter of the female thread of the handle member is larger than that of conventional adjusting bolts, it is possible to reduce the number of parts and improve vibration isolation. The strength and effective screwing area of the screwed parts of the members for raising and lowering the body can be increased, and loosening due to damage or vibration can be prevented. By making the wheels for transportation twin-wheeled and positioning them on the outside of the handle member, the ratio of the diameter of the female threaded portion to the diameter of the handle portion of the handle member is reduced. Despite the increased diameter, the rotational operation of the handle member can be made relatively light.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention.
A sectional view along the line, Figure 2 is also a plan view, Figure 3 is a plan view.
The figure is also a front view, Figure 4 is a bottom view, and Figure 5 is a bottom view.
6 is a sectional view taken along line BB in FIG. 3, FIG. 7 is a sectional view showing another embodiment of the present invention, and FIG. 8 is a sectional view showing a conventional example. 30...Strut, 31...Mounting nut, 32,3
4, 43... Thrust washer, 33... Ball, 35...
Handle member, 35a... Female threaded portion, 36... Vibration isolator holding member, 36a... Male threaded portion, 37... Vibration isolator, 3
8... Frame, 38a... Connecting portion, 38b... Vibration isolator holding member housing space, 38c... Frame member receiving portion,
38d...Axle support part, 39...Stop washer, 40
...Axle, 41, 42...Movement wheels.

Claims (1)

[Scope of Claims] 1. A fixed member attached to the leg or bottom of the device, a frame rotatably attached to the fixed member, a moving wheel supported by the frame, and a movable wheel rotatably attached to the fixed member. A mobile stabilizer for equipment having a vibration isolator that is arranged to be able to move up and down without being able to move up and down, the frame having a connecting part attached to the fixed member, and a vibration isolator holder that opens both above and below around the connecting part. a handle member receiving part that forms a member housing space and receives a handle member outside the vibration isolator holding member housing space, and an axle support part that supports an axle of the moving wheel, and the vibration isolator A vibration isolator holding member having a threaded portion formed on its upper outer circumferential surface is accommodated in the holding member storage space such that its upper portion projects upward from the vibration isolator holding member storage space and is non-rotatable and movable up and down. The vibration isolator is integrally fixed to a lower part of the vibration isolator holding member, and a handle member having a female threaded portion formed on an inner circumferential surface is rotatable with respect to the frame by the handle member receiving portion. and arranged around the vibration isolator holding member so that the female threaded portion is received by the vibration isolator holding member and screwed into the male threaded portion of the vibration isolator holding member, and both ends of the axle supported by the axle support portion A moving stabilizer for equipment, characterized in that two moving wheels are attached at positions outside the handle member receiving portion.