WO2007049364A1

WO2007049364A1 - Adjuster/caster device, caster device, and adjuster device

Info

Publication number: WO2007049364A1
Application number: PCT/JP2005/023609
Authority: WO
Inventors: Kenji Ota
Original assignee: Parts Seiko Co., Ltd.
Priority date: 2005-10-25
Filing date: 2005-12-22
Publication date: 2007-05-03
Also published as: JP2007118631A

Abstract

An adjuster/caster device enabling a caster device to be attached to and detached from an adjuster device, the caster device, and the adjuster device. The adjuster device (1) comprises a base body (2) fitted to a fitted object (15), a lifting shaft (12) threaded to the base body (2) and liftable relative to the base body (2) by rotation, and a floor contact body (14) fitted to the lower end part of the lifting shaft (12). The caster device (18) comprises a wheel support body (19) detachably fitted to the base body (2) and wheels (21) supported on the wheel support body (19). The liftable range of the lifting shaft (12) relative to the base body (2) extends between a position where the bottom part of the floor contact body (14) is lowered from the lowermost parts of the wheels (21) and a position where it is raised from the lowermost parts of the wheels (21) in the installed state of the wheel support body (19) on the base body (2).

Description

Specification

Agitator and caster device, caster device and agitator device

Technical field

[0001] The present invention relates to an adjuster / caster device and a caster device which are attached to an object to be attached such as various devices, furniture, display fixtures, etc., and facilitate the movement and height adjustment of the object to be attached. And an adjuster device.

Background art

Conventionally, as disclosed in Patent Documents 1 and 2, for example, the adjuster device and the caster device are integrated, and the caster device can rotate about an axis extending in the vertical direction of the adjuster device. There was a caster and caster device. Such an adjuster and caster device has an advantage that the device can be compactly combined as compared with the case where the adjuster device and the caster device are attached to the object to be attached.

Patent Document 1: Japanese Patent Laid-Open No. 5-116502

Patent Document 2: Japanese Utility Model Publication No. 41-001

Disclosure of the invention

Problems to be solved by the invention

[0003] However, in the conventional caster and caster device, since the caster device and the caster device are integrated, there is a problem that the cost is naturally higher than that of the single caster device alone. In particular, when the object to be attached is heavy, there is a problem that the cost is significantly higher than that of the single adjuster device because the load resistance of the caster device must be increased.

[0004] However, in general, it is necessary to move the attachment using a caster device only when the attachment is first installed and when the attachment is moved, and the caster device is not always necessary. Absent.

[0005] The present invention has been made in view of such a conventional situation, and one object of the present invention is to provide an caster / caster apparatus, a caster capable of attaching / detaching the caster apparatus to / from the caster apparatus. An object is to provide a device and an adjuster device.

Another object of the present invention is to provide an caster / caster device, a caster device, and an adjuster device that can easily attach and detach the caster device to / from an adjuster device that does not lift an object to be attached.

[0007] Another object of the present invention is to provide an caster and caster device that can smoothly rotate the caster device around an axis extending in the vertical direction with respect to the adjuster device even when the attached object is heavy. An object of the present invention is to provide a caster device and an adjuster device.

[0008] Further objects of the present invention will become clear from the following description.

Means for solving the problem

[0009] An adjuster and caster device according to the present invention includes an adjuster device and a caster device that can be attached to and detached from the adjuster device.

The adjuster device is capable of moving up and down with respect to the base body by being screwed into the base body with the base body to be attached to the object to be attached, being axially oriented in the vertical direction, and being rotated with respect to the base body. An elevator shaft, and a floor contact body attached to a lower end portion of the elevator shaft so as to be rotatable with respect to the elevator shaft,

The caster device is detachably attached to the base of the adjuster device so as to be rotatable about an axis extending in the vertical direction with respect to the base, and is rotatable to the wheel support. Having supported wheels,

The range in which the elevator shaft can move in the axial direction of the lifting shaft with respect to the base body is such that the bottom of the floor contact body is lowered from the lowermost part of the wheel when the wheel support is attached to the base body. And the position where it will rise above the bottom of the wheel.

[0010] In this adjuster / caster device, if the caster device is attached to the adjuster device, the caster device can be connected to the base of the adjuster device by rotating the lifting shaft relative to the base of the adjuster device. The floor can be raised and lowered with respect to the base. Therefore, if the base of the adjuster device is attached to the attachment, the height of the attachment from the floor can be adjusted by rotating the lifting shaft relative to the attachment.

Further, a caster device is attached to the adjuster device, and the caster device is moved up and down with respect to the base of the adjuster device. If the shaft is raised and the bottom of the flooring body is pulled upward from the bottom of the wheel, the wheel will come into contact with the floor surface, and the flooring body will be lifted from the floor surface. By rolling it up, it becomes easy to move the object to be mounted on the floor.

[0012] Even when the caster device is attached to the adjuster device, if the lowermost part of the wheel is lifted from the floor surface, the caster device is covered in the same manner as when the caster device is not attached to the adjuster device. Although the height of the attachment can be adjusted, as described above, it is generally necessary to move the attachment using a caster device when the attachment is first installed and when it is moved. Therefore, it is not usually necessary to attach the caster device to the adjuster device.

[0013] For this reason, when a plurality of attachments are used, it is not necessary to leave the caster device attached to the adjuster device attached to all the attachments. The caster device may be attached to the adjuster device only for the attachment. Therefore, it is only necessary to prepare a small number of caster devices corresponding to all the attachments (in other words, the total number of caster devices can be made smaller than the total number of caster devices). Therefore, the user of the attached object can significantly reduce the cost required for the caster device.

[0014] Further, in one aspect of the adjuster and caster device of the present invention, and in the caster device and the adjuster device of the present invention, the base of the adjuster apparatus has a base shaft-shaped portion extending in the vertical direction,

The caster device further includes a sandwiching body that is movable or separable with respect to the wheel support, and the wheel support has an opening in a direction perpendicular to the axial direction, and the base shaft is formed through the opening. Has an adjuster mounting part that can receive the part from a direction perpendicular to the axial direction,

In a state where the sandwiching body is moved or separated so as to open the opening portion of the adjuster mounting portion, the base member is connected to the adjuster mounting portion via the opening portion from a direction relatively perpendicular to the axial direction. After the shaft-shaped portion is received, the wheel body is moved or attached to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip body. The support is on the base shaft-shaped portion, The base body is attached so as to be rotatable around the axis of the base shaft portion, and the base body shaft portion is moved so that the state where the base shaft base portion is sandwiched between the adjuster mounting portion and the base body is released. Alternatively, in a state where the wheel support body is separated from the wheel support body, the wheel support body is allowed to escape in a direction perpendicular to the axial direction from the agitator mounting portion through the opening portion. The base shaft portion can be removed.

[0015] In this case, the base shaft-shaped portion of the adjuster device that does not lift the object to be attached can be provided by sufficiently lowering the lifting shaft of the adjuster device with respect to the base in advance to sufficiently raise the base with respect to the floor surface. Since it can be received by the adjuster mounting part of the caster device from the direction perpendicular to the axial direction via the open part, or conversely, it can escape from the adjuster mounting part in a direction perpendicular to the axial direction. The caster device can be easily attached to and detached from the adjuster device without lifting the object to be attached.

The invention's effect

[0016] Since the caster device can be attached to and detached from the adjuster device, when using multiple attachments, it is not necessary to prepare as many caster devices as there are attachments. Since it only needs to be prepared, the user of the attachment can significantly reduce the cost of the caster device.

Brief Description of Drawings

FIG. 1 is a perspective view showing an adjuster device according to Embodiment 1 of the present invention.

FIG. 2 is a front view showing the adjuster device.

FIG. 3 is a longitudinal sectional view showing the adjuster device.

FIG. 4 is a longitudinal sectional view showing a state where the adjuster device is attached to an attachment.

FIG. 5 is a perspective view from the front side showing a state where the caster device is attached to the adjuster device in the first embodiment.

FIG. 6 is a rear perspective view showing a state where the caster device is attached to the adjuster device in the first embodiment.

FIG. 7 is a plan view showing a state where the caster device is attached to the adjuster device in the first embodiment. FIG. 8 is a rear view showing a state in which the caster device is attached to the adjuster device in the first embodiment.

FIG. 9 is a plan view showing a state where the sandwiching body is opened in the process of attaching the caster device to the lever device in the first embodiment.

FIG. 10 is a plan view showing a state in which the hook of the buckle mechanism is engaged with the hook engaging shaft in the process of attaching the caster device to the adjuster device in the first embodiment.

FIG. 11 is a plan view showing a state where the lever is turned and the buckle mechanism is tightened in the process of attaching the caster device to the adjuster device in the first embodiment.

FIG. 12 is a side view showing a state where the caster device is further attached to the adjuster device attached to the attachment in the first embodiment.

FIG. 13 is a side view showing a state in which the floor contact body is lifted from the state of FIG. 12 and lifted from the floor surface, and the wheels of the caster device are in contact with the floor surface.

FIG. 14 is a plan view showing the vicinity of a sandwiching body of a caster device in Embodiment 2 of the present invention.

FIG. 15 is a longitudinal sectional view showing an adjuster device according to Embodiment 3 of the present invention.

FIG. 16 is an enlarged view showing the vicinity of the first bearing of the adjuster device of FIG.

FIG. 17 is a plan view showing a caster device according to the third embodiment.

FIG. 18 is a longitudinal sectional view showing a state where the caster device is attached to the adjuster device in Example 3 (the position of the cross section corresponds to the XVIII-XVIII line in FIG. 17).

FIG. 19 is a horizontal sectional view showing a state in which the base shaft portion of the adjuster device is received by the adjuster mounting portion of the caster device in Example 3, but the sandwiching body is still opened (cross-section). The position corresponds to the XIX—XIX line in Figure 18).

FIG. 20 is a longitudinal sectional view showing an adjuster device according to Embodiment 4 of the present invention.

FIG. 21 is a plan view showing a caster device in Example 4.

FIG. 22 is a longitudinal sectional view showing a state where the caster device is attached to the adjuster device in Example 4 (the position of the cross section corresponds to the line XXII-XXII in FIG. 21).

Explanation of symbols

1 Adjuster device

2 Substrate a Base shaft

b Enlarged part

c Tool fitting part

d Mounting screw shaft

Female thread

Screw hole

Male thread

Outer cylinder

a, 6b Flange B

Upper track groove

Lower raceway groove

a, 8b Lower track groove split part Ball

First bearing

a, 10b Split part of the first bearing Second bearing

a, l ib Dividing part of second bearing Lifting shaft

a Male thread

b Projection

Rotation operation part

Grafted body

a Center hole

Attachment

a Screw hole

Floor

Rubber elastic layer

Caster equipment 19 Wheel support

20 axles

21 wheels

22 Adjuster mounting

22a Receiver

22b Open part

23 Hook engagement shaft

24 sandwich

24a receiving part

25 Clamp body axis

26 Lever

27 lever

28 hook

29 Hook shaft

30 Retainer

31a, 31 retainer

33 Locking nuts

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described based on embodiments shown in the drawings.

Example 1

FIGS. 1 to 3 show an adjuster device 1 according to Embodiment 1 of the present invention. In this adjuster 1, the base 2 is made of a metal such as steel, and the base shaft-shaped portion 2a (see FIG. 3), the enlarged portion 2b, the tool fitting portion 2c, and the mounting screw shaft 2d are integrated. Have. The base shaft-shaped portion 2a has a cylindrical shape extending in the vertical direction and having an open lower end, and a female screw portion 3 is formed on the inner periphery thereof. Therefore, the hollow portion of the base shaft-like portion 2a constitutes a screw hole 4 having an open lower end extending along the axis of the base shaft-like portion 2a. The enlarged portion 2b has a generally disc shape, and extends outward from the base shaft-shaped portion 2a on the upper side of the base shaft-shaped portion 2a. The tool fitting part 2c has the same shape as the hexagon nut. Bulges upward from the enlarged portion 2b. The mounting screw shaft 2d rises upward from the center portion of the tool fitting portion 2c, and a male screw portion 5 is provided on the outer periphery of the mounting screw shaft 2d. The base shaft-shaped portion 2a, the enlarged portion 2b, the tool fitting portion 2c, the mounting screw shaft 2d, and the screw hole 4 are all concentric with each other.

A cylindrical outer cylinder 6 is fitted on the outer side of the base shaft-shaped portion 2a so as to be rotatable concentrically with the base shaft-shaped portion 2a. The outer cylinder 6 is made of a metal such as steel, and flanges 6a and 6b are provided at the upper and lower ends of the outer cylinder 6, respectively. As shown in FIG. 3, a circular upper raceway groove 7 as viewed from the axial direction is formed on the lower surface of the enlarged portion 2b, and a circular lower raceway groove 8 as viewed from the axial direction is formed at the upper end portion of the outer cylinder 6. Each of them is formed, and a required number of balls 9 are accommodated between the raceway grooves 7 and 8 so as to freely roll. Here, the raceway grooves 7 and 8 and the ball 9 constitute a first bearing 10 interposed between the enlarged portion 2b and the upper end portion of the outer cylinder 6, and are rolling bearings capable of receiving a thrust load. It has become. Between the inner periphery of the lower end portion of the outer cylinder 6 and the outer periphery of the base shaft-shaped portion 2a, a second bearing 11 comprising a rolling bearing is interposed. Note that the second bearing 11 does not necessarily have to be provided at the lower end portion of the outer cylinder 6, but is preferably provided at the lower end side.

[0022] A male screw portion 12a provided on the outer periphery of a lifting shaft 12 made of metal such as steel is screwed into the female screw portion 3 of the screw hole 4 of the base body 2. The total length of the male screw portion 12a is longer than the total length of the female screw portion 3. In the vicinity of the lower end portion of the lifting shaft 12, a rotary operation portion 13 having a shape similar to that of a hexagon nut is provided. A portion of the elevating shaft 12 below the rotation operation unit 13 is inserted into a center hole 14a provided at the center of a pedestal-shaped floor-contacting body 14 that is opened downward. On the outer periphery of the lower end of the elevating shaft 12, three protrusions 12b are projected at intervals of 120 degrees (only one is visible in the sectional views of FIGS. Has been. Here, the floor contact body 14 is rotatable with respect to the lifting shaft 12 and is movable only a little distance in the axial direction (up and down direction). 14 will be in contact with the top surface). Further, as shown by an arrow A in FIG. 3, the elevating shaft 12 can slightly swing (tilt) in all directions with respect to the floor contact body 14. A locking nut 33 is screwed into the male threaded portion 12a of the elevating shaft 12. Next, before describing the configuration of the caster device 18, first, the method of use and operation of the above-described adjuster device 1 will be described. As shown in Fig. 4, screw the male screw part 5 of the mounting screw shaft 2d into the screw hole 15a provided in the bottom part of the work piece 15 until the tool fitting part 2c contacts the bottom part of the work piece 15. As a result, the base 2 is attached to the attachment 15. The screw shaft 2d for mounting into the screw hole 4 can be screwed by fitting a tool such as a wrench to the regular hexagonal tool fitting portion 2c and rotating the base 2 ( Of course, if possible, you can screw it in by hand). Normally, the adjuster device 1 is attached to each of the four corners of the bottom of one attachment 15 (a total of four are attached).

[0024] In this state of attachment, if the rotary operation unit 13 is rotated to rotate the lifting shaft 12 with respect to the base body 2 and move up and down as indicated by arrow B in FIG. Since 14 can be raised and lowered, the height H of the attachment 15 from the floor 16 can be adjusted. Since the floor contact body 14 is rotatable with respect to the lifting shaft 12, the floor contact body 14 rotates with the lifting shaft 12 to damage the floor surface 16, or Contact with the surface 16 does not interfere with the rotation of the lifting shaft 12. After completing the height adjustment, tighten the nut 33 for the mouth as shown by the arrow G in Fig. 4 and contact the lower end of the base shaft portion 2a as shown in Fig. 3. Can be locked.

FIGS. 5 to 8 show a state in which the caster device 18 is attached to the adjuster device 1 in the present embodiment, and FIGS. 9 to 11 show a process of attaching the caster device 18 to the adjuster device 1. The caster device 18 has a wheel support 19, and left and right wheels 21 are rotatably supported on both left and right sides of the wheel support 19 via an axle 20 extending in the lateral direction. As shown in FIGS. 9 to 11, the wheel support 19 is provided with an adjuster mounting portion 22 that is recessed in a substantially semicircular shape when viewed from above. Each of the azimuth mounting portions 22 is provided with receiving portions 22a each having an arcuate cross section that extends short in the vertical direction at intervals in the vertical direction, and is open in a direction perpendicular to the axial direction (a direction that is generally horizontal when used). As shown in FIG. 9, the base shaft portion 2a of the adjuster device 1 can be received together with the outer cylinder 6 from a direction perpendicular to the axial direction. ing. A hook engaging shaft 23 is provided near the adjuster mounting portion 22 of the wheel support 19 so as to extend in a direction parallel to the axial direction of the adjuster mounting portion 22. It is attached.

[0026] The wheel support body 19 is provided with a pinching body 24 provided with arc-shaped receiving portions 24a at intervals in the vertical direction around a pinching body shaft 25 extending in a direction parallel to the axial direction of the adjuster mounting portion 22. It is mounted so that it can rotate. The sandwich body shaft 25 is provided on the opposite side of the hook engaging shaft 23 with the adjuster mounting portion 22 interposed therebetween. As shown in FIGS. 9 to 11: at the front end of the sandwiching body 24, a lever 26, which is curved in a generally letter-shape when viewed from above, has a lever shaft 27 extending in a direction parallel to the sandwiching body shaft 25. It is attached so that it can be rotated around. The intermediate bent portion of the lever 26 is made of a material having a high spring property such as spring steel, and the base end portion of the hook 28 which is curved in a generally arcuate shape as viewed from above is connected to the sandwich body shaft 25. A hook shaft 29 extending in the parallel direction is pivotally attached. Here, the lever 26, the hook 28 and the hook engaging shaft 23 constitute a kind of buckle mechanism.

Next, the usage method and operation of this embodiment including the caster device 18 will be described. First, as described above, the adjuster device 1 is attached to the attachment 15 as shown in FIG. 4 and the elevating shaft 12 is sufficiently lowered with respect to the base 2 so that the base 2 and the outer cylinder 6 with respect to the floor 16 are obtained. Raise sufficiently. In this state, the caster device 18 can be attached to the adjuster device 1 as shown in FIGS. That is, first, as shown in FIG. 9, the sandwiching body 24 is rotated in the opening direction, and the opening 22b of the adjuster mounting part 22 is opened. From a direction perpendicular to the axial direction (generally horizontal). The base shaft-shaped portion 2a is intruded into and received by the outer cylinder 6 via the open portion 22b and the outer cylinder 6 so that the base shaft-shaped portion 2a is received. The caster device 18 is actually moved), and the outer periphery of the outer cylinder 6 is brought into contact with the inner periphery of the receiving portion 22a of the agitator mounting portion 22. Next, as shown by the arrow C in FIG. 9, the pin 24 is rotated around the pin body axis 25 in the direction to close the pin 24 (direction approaching the adjuster mounting portion 22), and the hook 28 is hooked as shown in FIG. After engaging with the shaft 23, if the lever 26 is rotated more than a certain amount in the direction that the distance between the hook shaft 29 and the hook engaging shaft 23 becomes larger as shown by the arrow D in FIGS. The buckle mechanism is held in a tightened state by the elasticity of the hook 28. As a result, the base shaft-shaped portion 2a is sandwiched between the inner periphery of the receiving portion 22a of the adjuster mounting portion 22 and the inner periphery of the receiving portion 24a of the sandwiching body 24 via the outer cylinder 6, and the wheel support body 19 through the outer cylinder 6 The base shaft-like portion 2a is attached so as to be rotatable about the axis of the base shaft-like portion 2a. 5 to 8, 11, and 12 show a state where the caster device 18 is attached to the adjuster device 1 in this manner. In this attached state, the axis of the base shaft-shaped portion 2a of the adjuster device 1 and the axis of the adjuster mounting portion 22 of the caster device 18 are aligned. Further, the upper and lower flange portions 6a and 6b of the outer cylinder 6 are opposed to the upper and lower receiving portions 22a of the adjuster mounting portion 22 and the upper and lower receiving portions 24a of the sandwich member 24, respectively. Thus, the base 2 and the outer cylinder 6 are prevented from coming off with respect to the wheel support 19 in the axial direction.

Next, the elevating shaft 12 is rotated together with the rotation operation unit 13 of the adjuster device 1 to be lifted with respect to the base 2, and the bottom of the floor-contacting body 14 is attached to the wheel 21 as indicated by an arrow E in FIG. Pulling it upward from the bottom, the wheel 21 comes into contact with the floor 16 and the floor-contacting body 14 is lifted from the floor 16, so that the wheel 21 is moved to the floor as shown by arrow F in the figure. Rolling on the surface 16 makes it possible to easily move the attachment 15 on the floor surface 16.

[0029] Removal of the caster device 18 from the adjuster device 1 can be easily performed as follows. In the adjuster 1, the floor 14 is brought into contact with the floor 16 as shown in FIG. 12 by rotating the lifting shaft 12 together with the rotary operation unit 13 to lower the floor 14 relative to the base 2. Then, the lowermost part of the wheel 21 is lifted from the floor surface 16, and the procedure opposite to that described above with reference to FIGS. 9 to 11 is performed to relatively fix the base shaft-shaped part 2a to the outer cylinder. 6 together with the adjuster mounting part 22 via the open part 22b, the wheel support 19 is removed from the base shaft part 2a, thereby allowing the caster device 1 to the caster device 18 as a whole. Can be removed.

[0030] Even when the caster device 18 is attached to the adjuster device 1, the caster device 18 is attached if the lowermost part of the wheel 21 is lifted from the floor 16 as shown in FIG. The height of the attachment 15 can be adjusted in the same manner as in the case where the attachment 15 is not installed.However, in general, the attachment 15 needs to be moved by using the caster device 18. It is only necessary to install the caster device 18 and the caster device 18 to the adjuster device 1 because it is only when it is relocated.

[0031] For this reason, when a plurality of attachments 15 are used, they are attached to all attachments 15. It is not necessary to leave the caster device 18 attached to the existing caster device 1, and it is only necessary to attach the caster device 18 to the adjuster device 1 for the attachment 15 that needs to be moved. Therefore, since it is only necessary to prepare a small number of caster devices 18 corresponding to all attachments 15 (in other words, the total number of caster devices 18 is less than the total number of caster devices 1). Therefore, the user of the attachment 15 can significantly reduce the cost required for the caster device 18.

Further, in this embodiment, as shown in FIG. 12, if the lifting shaft 12 of the adjuster device 1 is lowered to a position where the wheel 21 is lifted from the floor surface 16, the base shaft of the adjuster device 1 is lowered. The portion 2a enters the adjuster mounting portion 22 of the caster device 18 from the direction relatively perpendicular to the axial direction (substantially horizontal direction) via the open portion 22b and accepts it, or conversely, the adjuster mounting portion. The caster device 18 can be easily attached to and detached from the adjuster device 1 without lifting the object 15 to be attached, since it can be escaped from 22 in a direction perpendicular to the axial direction.

[0033] Further, when the caster device 18 is used, a large load acts on the caster device 18 from the attachment 15 via the adjuster device 1, so that the caster device 18 supports the adjuster device 1 with sufficient strength, In addition, the caster device 18 needs to be able to rotate smoothly with respect to the adjuster device 1. Here, in this embodiment, the first bearing 10 that receives a thrust load between the enlarged portion 2b and the upper end portion of the outer cylinder 6 is between the outer periphery of the base shaft-shaped portion 2a and the inner periphery of the outer cylinder 6. Since the second bearings 11 are interposed in each of them, it is possible to satisfy such a demand.

[0034] In this embodiment, a force using a rolling bearing as the first and second bearings 10, 11 is used. As the first and second bearings 10, 11, other types of bearings such as oilless bearings are used. It may be used.

Example 2

FIG. 14 shows a second embodiment of the present invention. In the present embodiment, the hook 28 is made of a material having poor elasticity, while the outer periphery of the hook engaging shaft 23 is fitted with a rubber elastic layer 17 made of a material having rubber elasticity such as rubber or thermoplastic elastomer. Are combined. Other configurations are the same as those of the adjuster / caster apparatus of the first embodiment. Also in this embodiment, after engaging the hook 28 with the hook engaging shaft 23, the lever 26 is rotated in a direction in which the distance between the hook shaft 29 and the hook engaging shaft 23 is increased by a predetermined amount or more. Then, the buckle mechanism is held in a tightened state by the rubber elasticity of the rubber elastic layer 17 instead of the elasticity of the hook 28 of the first embodiment.

Example 3

[0037] Figs. 15 to 19 show Example 3 of the present invention. In the first and second embodiments, the outer cylinder 6 and the first and second bearings 10 and 11, which are not related to the original height adjustment function, are attached to the caster device 18 when only the adjuster device 1 is considered. Since the caster device 18 is installed, the manufacturing cost is higher than the normal caster device 1 which is not scheduled to be attached or detached.

[0038] In the third embodiment, the main portion of the first bearing 10 is equipped with the force applied to the adjuster device 1. The second bearing 11 is provided on the caster device 18 side, and the outer cylinder 6 is composed of the adjuster device 1 and the caster device 18. By not installing them in any of the above, the manufacturing cost of the adjuster device 1 is reduced.

FIGS. 15 and 16 show the adjuster device 1 in the present embodiment. In this adjuster device 1, as well shown in the enlarged view of FIG. 16, a circular upper raceway groove 7 is provided on the lower surface of the enlarged portion 2 b of the base 2, and a retainer is provided along the upper raceway groove 7. 3 0 is installed. Between the upper raceway groove 7 and the retainer 30, a required number of Bonoles 9 are held. Here, the upper raceway groove 7, the retainer 30 and the ball 9 constitute the main part of the first bearing 10 which is a rolling bearing capable of receiving a thrust load. Unlike the case of the first embodiment, the adjuster device 1 is provided with an outer cylinder 6 and a second bearing 11. Other configurations are the same as those of the adjuster device 1 of the first embodiment.

FIG. 17 is a plan view of the caster device 18 in this embodiment, and FIG. 18 is a longitudinal sectional view showing a state where the caster device 18 is attached to the adjuster device 1 in this embodiment (the position of the cross section is XVIII in FIG. 17). (Corresponding to line XVIII), FIG. 19 shows a state in which the force clamp body 2 4 in which the shaft portion 2a of the adjuster device 1 is received by the adjuster mounting portion 22 of the caster device 18 is still open in this embodiment. (The cross-sectional position is XIX—XIX in FIG. 18. Corresponding to the line). As shown in these figures, the wheel support 19 is provided with an adjuster mounting portion 22 that is recessed in a semicircular shape when viewed from above, and the adjuster mounting portion 22 is perpendicular to the axial direction ( An opening 22 b (see FIG. 17) is provided in a direction that is generally horizontal when in use.

As shown in FIG. 17, half of the upper surface of the wheel support body 19 that constitutes the remaining portion of the first bearing 10 is provided around the periphery of the agitator mounting portion 22 and the upper end portion of the sandwiching body 24. Divided portions 8a and 8b of the circular lower raceway groove are provided. Then, when the clamp member 24 is closed to attach the caster device 18 to the adjuster device 1, the divided portions 8a and 8b of the lower raceway groove form one circular lower raceway groove 8 as shown in FIG. As described above, the ball 9 rolls between the upper and lower raceway grooves 7 and 8. Therefore, in a state where the caster device 18 is attached to the adjuster device 1, the first bearing 10 includes the enlarged portion 2b and the upper portion of the wheel support 19 around the periphery of the adjuster mounting portion 22 and It is interposed between the upper ends of the sandwiching bodies 24.

[0042] As shown in FIG. 19, the lower end portion of the adjuster mounting portion 22 and the lower end portion of the sandwiching body 24 are divided into a semicircular divided portions 11a, l ib is mounted, and when the wheel support 19 is attached to the base shaft-shaped portion 2a of the adjuster device 1, the divided portions 11a, l ib are concentric, and the adjuster mounting portion 22 and the sandwiching body It functions as one second bearing 11 interposed between 24 and the outer periphery of the base shaft-like portion 2a. Other configurations are the same as those of the first embodiment.

In the present embodiment, the force outer cylinder 6 and the second bearing 11 in which the main portion of the first bearing 10 is provided are not provided in the adjuster apparatus 1, so that the manufacturing cost of the adjuster apparatus 1 can be reduced. The cost of the caster device 18 is higher because the second bearing 11 is provided. However, since only a small number of caster devices 18 are prepared as compared to the adjuster device 1, the increase in the cost as a whole is small. Les.

In the present embodiment, a force using a rolling bearing as the first bearing 10, another type of bearing such as an oilless bearing may be used as the first bearing 10. Further, a force using an oilless bearing divided as the second bearing 11 A rolling bearing may be divided and used in the same manner as the first bearing 10 in Example 4 described below. Example 4

FIGS. 20 to 22 show Example 4 of the present invention. In Example 4, as shown in FIG. 20, the adjuster device 1 is not equipped with the outer cylinder 6 and the second bearing 11, and the circular upper raceway groove constituting a part of the first bearing 10 is used. By providing only 7 and installing the main part of the first bearing 10 parts and the whole of the second bearing 11 on the caster device 18 side, the manufacturing cost of the adjuster device 1 is reduced.

FIG. 21 is a plan view of the caster device 18 in the present embodiment, and FIG. 22 is a longitudinal sectional view showing a state in which the caster device 18 is attached to the adjuster device 1 in the present embodiment (the position of the cross section is XXII in FIG. 20). — Corresponds to the XXII line). As shown in these drawings, the main portion of the first bearing 10 is divided and provided on the periphery of the adjuster mounting portion 22 and the upper end of the sandwiching body 24 on the upper surface of the wheel support 19. ing. That is, the semicircular lower rail groove divided portions 8a and 8b are provided, and the retainers 31a and 31b are attached along the divided portions 8a and 8b, respectively. A required number of balls 9 are held between the divided portions 8a and 8b of the lower raceway groove and the retainers 31a and 31b, respectively. Then, when the clip body 24 is closed to attach the caster device 18 to the adjuster device 1, the divided portions 8a and 8b of the lower raceway groove are concentric, and together with the upper track groove 7 on the adjuster device 1 side, one bearing ( The first bearing 10) is constructed. However, in order to prevent the ball 9 from falling off when the sandwiching body 24 is opened, the ball 9 is confined to the divided portions 8a and 8b of the lower raceway groove by the retainers 31a and 31b. Unlike rolling ball bearings. The ball 9 cannot move toward the other divided part 8a, 8b. The other configuration is the same as that of the adjuster device 1 of the third embodiment, and a second bearing 11 made of an oilless bearing is formed in a semicircular shape at the lower end portion of the adjuster mounting portion 22 and the lower end portion of the sandwiching body 24, respectively. The divided parts 1 la and 1 lb are installed.

In the present embodiment, the manufacturing cost of the adjuster device 1 can be further reduced. In addition, although the caster device 18 is expensive because the main portion of the first bearing 10 and the second bearing 11 are provided, only a small number of caster devices 18 are required as compared to the caster device 1. So the overall cost increase is small.

[0048] In this embodiment, the rolling bearing is divided and used as the first bearing 10. As the first bearing 10, another type of bearing such as an oilless bearing may be divided and used. Further, in this embodiment, a force that uses an oilless bearing as the second bearing 11 is divided, and a rolling bearing may be used as the second bearing 11 in the same manner as the first bearing 10. However, other types of bearings may be divided and used.

In each of the above embodiments, the base 2 of the adjuster device 1 is attached to the attachment 15 by screwing the mounting screw shaft 2d provided on the base 2 into the attachment 15. In this case, the base 2 of the adjuster device 1 may be attached to the attachment 15 by another method.

[0049] In each of the above embodiments, the wheel 21 is formed in a roller shape. However, in the present invention, the wheel 21 may be spherical. Further, in each of the above embodiments, a force that is a so-called twin wheel in which two wheels 21 are provided in one caster device 18 In the present invention, only one wheel may be provided in one caster device. Good.

[0050] Further, in each of the embodiments, the force with which the sandwiching body 24 is rotated in a hinged door manner. In the present invention, the sandwiching body 24 is opened and closed in a manner other than the rotational motion. For example, the sandwiching body 24 is sandwiched between the wheel support 19 and the wheel support 19 so that the sandwiching body 24 can move along an arcuate locus about the axis of the adjuster mounting portion 22 with respect to the wheel support 19. 24, when the caster device 18 is attached, the sandwiching body 24 is moved to a position where it is pulled out from the wheel support 19 side, while when the caster device 18 is removed, the sandwiching body 24 is mounted on the wheel support 19 side. You may make it move to the position accommodated in. In addition, it is possible to completely separate the clip body 24 from the wheel support 19 when it is removed.

[0051] Further, as means for fixing the sandwiching body 24 in a closed state with respect to the wheel support body 19, not only the buckle mechanism in each of the embodiments described above, but also other types of buckle mechanisms may be used (for example, Instead of the hook 28 of each embodiment, a mechanism in which a member having a curved wire is engaged with the wheel support 19 side may be used. Furthermore, for example, it may be fixed by means other than the buckle mechanism, such as fastening means such as bolts and nuts.

[0052] In addition, a fixing means such as a buckle mechanism that fixes the sandwiching body 24 in a closed state with respect to the wheel support body 19 results in a state in which the fixed state is released when it is not intended for some reason. In the state where the floor contact body 14 is lifted from the floor surface 16, There is a possibility that the caster device 18 may come off. In order to prevent such a risk, a locking mechanism that locks the fixing state by the fixing device is provided as a safety mechanism that prevents the fixing device from being released when it is not intended, and this locking mechanism is not released. The fixed state by the fixing device may not be released. In addition, this locking mechanism prevents the fixed floor lock from being released when the floor contact body 14 comes into contact with the floor surface 16 and supports the weight of the attachment 15. It is good also as a mechanism to make.

In each of the embodiments, the rotation operation unit 13 rotates integrally with the lifting shaft 12. For example, a speed reduction mechanism is a ratchet mechanism between the rotation operation unit 13 and the lifting shaft 12. Etc. may be interposed.

Industrial applicability

As described above, the present invention is useful as an apparatus that is attached to an attachment such as various devices, furniture, display fixtures, etc. to facilitate the movement of the attachment and adjust the height.

Claims

The scope of the claims

[1] An adjuster device and a caster device that can be attached to and detached from the adjuster device. The adjuster device includes a base that is attached to an object to be attached and an axial direction that is directed vertically to the base. A lifting shaft that is screwed and rotated with respect to the base body and can be moved up and down with respect to the base body, and is attached to a lower end portion of the lifting shaft so as to be rotatable with respect to the lifting shaft. And a flooring body,

The range in which the elevator shaft can move in the axial direction of the lifting shaft with respect to the base body is such that the bottom of the floor contact body is lowered from the lowermost part of the wheel when the wheel support is attached to the base body. An adjuster / caster device extending between the position to be raised and the position to be raised from the lowermost part of the wheel.

[2] The base of the adjuster device has a base shaft-like portion extending in the vertical direction,

In a state where the sandwiching body is moved or separated so as to open the opening portion of the adjuster mounting portion, the base member is connected to the adjuster mounting portion via the opening portion from a direction relatively perpendicular to the axial direction. After the shaft-shaped portion is received, the wheel body is moved or attached to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip body. While the support is attached to the base shaft-shaped portion so as to be rotatable about the axis of the base shaft-shaped portion, the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the sandwiching body. In a state where the clip body is moved so as to be released or separated from the wheel support body, the base shaft-shaped portion is relatively moved in a direction perpendicular to the axial direction from the adjuster mounting portion via the opening portion. 2. The adjuster / caster device according to claim 1, wherein the wheel support body can be detached from the base shaft-shaped portion by being escaped.

[3] The adjuster according to claim 2, wherein the clamp body of the caster device is rotatable with respect to the adjuster mounting portion about an opening / closing shaft extending in a direction parallel to the axial direction of the adjuster mounting portion. Also a caster device.

4. The clamper according to claim 2, wherein the sandwiching body of the caster device is supported on the wheel support body so as to be movable while drawing an arcuate locus about the axis of the adjuster mounting portion. Caster device.

[5] The adjuster device has an outer cylinder provided outside the base shaft-shaped portion so as to be concentrically rotatable with respect to the base shaft-shaped portion,

5. The base shaft-shaped portion is received by the adjuster mounting portion together with the outer cylinder, and is sandwiched between the adjuster mounting section and the sandwiching body via the outer cylinder. The caster and caster device described in 1.

[6] The base of the adjuster device has an enlarged portion that extends outward from the base shaft-shaped portion above the base shaft-shaped portion,

A first bearing interposed between the enlarged portion and the upper end of the outer cylinder; and a second bearing interposed between the outer periphery of the base shaft-shaped portion and the inner periphery of the outer cylinder. Further claims

5. The adjuster and caster device according to 5.

[7] The base of the adjuster device has an enlarged portion that extends outward from the base shaft-shaped portion above the base shaft-shaped portion,

At least a main part is attached to the enlarged part, and when the wheel support is attached to the base shaft-like part, a part of the upper part of the enlarged part and the wheel support around the adjuster attaching part And a first bearing interposed between the upper end portion of the sandwiching body, the adjuster mounting portion and the sandwiching body, and the wheel support is attached to the base shaft-shaped portion. 5. The adjuster / caster according to any one of claims 2 to 4, further comprising a second bearing interposed between the adjuster mounting portion and the sandwiching body and an outer periphery of the base shaft-shaped portion when attached. apparatus.

[8] The base of the adjuster device is arranged on the upper side of the base shaft-shaped portion and outside the base shaft-shaped portion. Has an enlarged part that spreads to the side,

At least a main part is divided and attached to a peripheral portion of the upper-side of the wheel supporter and an upper end of the sandwiching body, and the wheel support is attached to the base shaft-shaped part. A first bearing interposed between the enlarged portion and the peripheral portion of the above-described adjuster mounting portion and the upper end portion of the sandwiching body, of the upper surface of the wheel support, the above-mentioned adjuster mounting portion, and the above-mentioned When the wheel support is attached to the base shaft-shaped portion, the adjuster mounting portion and between the sandwich body and the outer periphery of the base shaft-shaped portion are mounted. The adjuster / caster device according to claim 2, further comprising a second bearing interposed in the casing.

[9] The adjuster device includes a screw hole provided along the axis of the base shaft portion, a female screw portion provided on an inner periphery of the screw hole, and the lifting shaft. 9. The adjuster / caster device according to claim 2, further comprising a male screw portion screwed into the female screw portion.

[10] A base body to be attached to an object to be attached, a base shaft-shaped portion extending in the vertical direction provided on the base body, and a screw provided on the base shaft-shaped portion and extending along the axis of the base shaft-shaped portion A hole, an internal thread portion provided on the inner periphery of the screw hole, and an external thread portion on the outer periphery. The external thread portion is screwed into the internal thread portion and rotated with respect to the base body to thereby Removable to an adjuster device having an elevating shaft that can be moved up and down with respect to the substrate and a floor contact body that is attached to the lower end of the elevating shaft so as to be rotatable with respect to the elevating shaft. A caster device to be installed,

A wheel support having an opening portion in a direction perpendicular to the axial direction, and having an adjuster mounting portion through which the base shaft-shaped portion can be received from a direction perpendicular to the axial direction, and the wheel support A wheel rotatably supported by the body, and a sandwiching body movable or separable with respect to the wheel support,

In a state where the sandwiching body is moved or separated so as to open the opening portion of the adjuster mounting portion, the base member is connected to the adjuster mounting portion via the opening portion from a direction relatively perpendicular to the axial direction. After the shaft-shaped portion is received, the sandwich body is moved or moved so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the sandwich body. Is attached to the wheel support so that the wheel support is attached to the base shaft-like portion so as to be rotatable about the axis of the base shaft-like portion, and between the adjuster mounting portion and the sandwiching body. In a state where the sandwich body is moved or separated from the wheel support so that the state where the base shaft-shaped portion is sandwiched is released, the base shaft-shaped portion is relatively moved via the opening portion. The wheel support can be detached from the base shaft-shaped portion by escaping from the axiser mounting portion in a direction perpendicular to the axial direction.

The range in which the lifting shaft can move in the axial direction with respect to the base body is such that the bottom of the floor contact body is lowered from the lowermost part of the wheel when the wheel support is attached to the base body and A caster device extending between a position where the wheel rises from the bottom of the wheel.

A base body to be attached to an object to be attached; a base shaft-shaped portion extending in the vertical direction provided on the base body; a screw hole extending along the axis of the base shaft-shaped portion provided in the base shaft-shaped portion; A female screw portion provided on the inner periphery of the screw hole and a male screw portion are provided on the outer periphery. The male screw portion is screwed into the female screw portion and rotated with respect to the base member, thereby being attached to the base member. An agitation device comprising an elevating shaft that can be moved up and down and a floor contact body that is attached to a lower end portion of the elevating shaft so as to be rotatable with respect to the elevating shaft. The caster device that is detachably attached to the caster device has an opening portion in a direction perpendicular to the axial direction, and an azimuth attachment that can receive the directional force perpendicular to the axial direction through the opening portion. A wheel support with a section and A rotatably supported wheel to the wheel support, and a mobile or separation possible pinching member to said wheel support,

In a state where the sandwiching body is moved or separated so as to open the opening portion of the adjuster mounting portion, the base member is connected to the adjuster mounting portion via the opening portion from a direction relatively perpendicular to the axial direction. After the shaft-shaped portion is received, the wheel body is moved or attached to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip body. While the support is attached to the base shaft-shaped portion so as to be rotatable about the axis of the base shaft-shaped portion, the adjuster mounting portion Relative to each other via the opening portion in a state where the pinching body is moved or separated from the wheel support so that the state where the base shaft-like portion is pinched between the pinching body and the pinching body is released. The wheel support can be removed from the base shaft portion by allowing the base shaft portion to escape from the adjuster mounting portion in a direction perpendicular to the axial direction.

The range in which the lifting shaft can move in the axial direction with respect to the base body is such that the bottom of the floor contact body is lowered from the lowermost part of the wheel when the wheel support is attached to the base body and An adjuster device extending between a position where the wheel rises from the lowermost part of the wheel.