WO2004065139A1

WO2004065139A1 - Adjuster with caster

Info

Publication number: WO2004065139A1
Application number: PCT/JP2003/006189
Authority: WO
Inventors: Kenji Ota
Original assignee: Parts Seiko Co., Ltd.
Priority date: 2003-01-22
Filing date: 2003-05-19
Publication date: 2004-08-05
Also published as: TW200413192A; AU2003231555A1

Abstract

An adjuster (1) with a caster. The adjuster can be downsized and has no possibility of damaging a floor (19), and is used for adjusting height of various equipment, furniture, etc. A screw shaft (8) is supported by the floor contacting body (2) so as to vertically penetrate the body and to be supported elevatably with respect to the floor contacting body (2) and rotatably about the shaft. On the upper side of the screw shaft (8), there is provided a male screw portion (9a) for an object (17) to which the adjuster is installed, and the male screw portion (9a) is screwed into a screw hole (18) of the object (17). A caster (13) is installed on the lower side of the screw shaft (8) such that a wheel (15) of the caster (13) can be projected outside the floor contacting body (2) and retracted inside the floor contacting body (2). A rotation operation portion (10) is provided in the middle in a length direction of the screw shaft (8). The screw shaft (8) can be rotated either by a tool fitted on the rotation operation portion (10) or by hand grasping the operation portion (10).

Description

Description Ayas Evening with Cass Evening Technical Field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjuster that is attached to an object to be mounted such as various devices, furniture, display fixtures, and the like, and adjusts the height. Background art

The general azimuth evening does not have a casing evening, only the height can be adjusted, and it does not have a function to make it easy to move the installation location of the object. In addition, various types of casters with casters (or casters with casters), which have been integrated with casters and casters, have been used to make it easier to move the installation location. However, many of them have a problem in that the equipment becomes extremely large because a cascade is provided outside the floor contacting body that comes into contact with the floor surface.

In the past, some Ayas evenings with a Casing evening have been developed in which Cass evenings are accommodated inside the flooring. For example, Japanese Unexamined Patent Publication No. Hei 6-2555303 (Reference 1), Japanese Unexamined Patent Publication No. Hei 11-13910 (Literature 2), Japanese Unexamined Patent Publication No. Hei 44-18961 (Literature 1) 3), Nippon Jikkai Shokai 56-93 33 06 (Reference 4), Nippon Jikkai Hei 1-1 (1) 4440 (Literature 5), Nippon Jikkai Hei 4-1 1 1 2 1 0 1 No. 6 (Reference 6) and Jikkai Kaihei 6-558809 (Reference 7). This type of cascading wheels is designed so that the wheels of the casserole can be moved up and down inside the floor, and when the object is to be moved on the floor, the wheels of the casserole must be moved up and down. Lower part of the floor When adjusting the height, the floor is in contact with the floor, and the lower part of the wheels in the cascade is retracted above the bottom of the floor. I'm trying. Since the cascading evening with the cascading evening having such a structure is accommodated in the inside of the flooring body, the size can be reduced.

However, the following problems have been encountered with the conventional cascading sun with such a structure.

(a) For example, as in Document 1, a screw shaft is further screwed into the inner periphery of a floor body screwed to an object to be mounted, and a lower wheel of the screw shaft is supported at a lower end portion of the screw shaft. In the case of a structure in which the tip of a tool such as an elbow wrench is fitted into the tool fitting holes provided at the upper end of the body and the screw shaft to raise and lower the floor contact and the screw shaft, It cannot be used if there is no open area where the tip of the tool can be inserted in the upper part of the window (really, in most cases, there is no such open area).

(b) In a structure that adjusts the height by rotating the floor-contacting body while sliding it on the floor (for example, literatures 1-3, 5, 7), the floor may be damaged, Adjustment is difficult due to the contact resistance between the body and the floor,

(c) In order to eliminate the disadvantages of the preceding paragraph, in the case of a structure in which a bearing is interposed between the rotating part and the part of the floor-contacting body that is in contact with the floor (for example, References 4 and 6), The structure of the floor becomes complicated and the production cost increases,

(d) In each case, the shaft (screw shaft) that supports the cascade was not able to swing at all with respect to the floor, so if the floor was inclined, the floor would be attached to the floor. They are not evenly contacted and are in an uneven contact state, making it difficult to keep the mounted object horizontal, or the shaft is inclined with respect to the vertical direction where the load of the mounted object acts, and the shaft is May be broken.

The present invention has been made in view of such a conventional situation. The aim is to provide casters with a caster that can be miniaturized.

Another object of the present invention is to provide a cascaded azimuth tool that can be used even if there is no open part into which the tip of a tool can be inserted in a portion of the object above the azimuth tool. To provide.

Another object of the present invention is to adjust the height of the floor support without rotating it while sliding the floor support on the floor surface, and it is not necessary to equip the floor support with bearings. To provide.

Another object of the present invention is to provide an adjuster with a casserole that does not make it difficult to level the object to be mounted and does not cause the shaft to be broken by a large load even if the floor surface is inclined. .

Still other objects of the present invention will become apparent from the following description. Disclosure of the invention

The castor-mounted aerial device according to the present invention includes a floor-attaching body, which is provided with a space therein and has an opening at the bottom to be in contact with the floor surface. A screw shaft is supported by the floor contact so as to penetrate the floor contact in the up-down direction and to be able to move up and down relative to the floor contact and to rotate around the axis. A rotation operating unit into which a tool is fitted or which is gripped by hand when rotating the screw shaft is provided at a longitudinally intermediate portion of the screw shaft. An external thread portion for the object to be screwed into a screw hole provided in the object to be mounted is provided on the outer periphery of the screw shaft on the upper end side of the rotary operation portion. A casing is attached to the lower end of the screw shaft. The screw shaft is located at a position where the lowermost part of the wheel of the casserole projects below the opening of the flooring body and the lowermost part of the wheel is above the opening relative to the flooring body. Relative to the position that will be drawn into It can be moved up and down and can be held at the two positions.

In the azure set with a casserole according to the present invention, the lowermost portion of the wheel of the casserole can be projected downward from the opening of the stool by lowering the screw shaft with respect to the stake. In this state, the male screw part for the attachment of the screw shaft is screwed into the screw hole provided on the attachment, and the adjuster with the casserole is attached to the attachment. (Of course, the lowermost part of the wheel is opened. After screwing the male screw part for the object to be mounted into the screw hole while being pulled up from the upper part, raise the floor contact body with respect to the screw shaft, and move the lowermost part of the wheel of Cass It is also possible to project downward). As described above, the mounted object can be easily moved to a desired position by rolling the wheel on the floor surface in a state where the wheel protrudes from the floor contact body. When adjusting the height after moving the object to the desired position, lower the floor contact with the screw shaft, contact the opening of the floor contact with the floor, and adjust the bottom of the wheel. After pulling it upward from the opening of the floor anchor, fit a tool such as a wrench (spanner) into the rotary operation part, or grasp the rotary operation part by hand (pinch with your finger) and screw. The height can be adjusted by rotating the shaft with respect to the screw hole of the mounting object.

The caster-mounted adjuster according to the present invention can be downsized because the caster is accommodated inside the floor contact body.

In addition, since the height can be adjusted by rotating the screw shaft by operating the rotary operation part provided in the middle part of the screw shaft, the tool is mounted on the part of the mounting object above the adjuster. It can be used even when there is no opening to insert. Also, when adjusting the height, even if the screw shaft is rotated, the floor will not rotate, so it will be difficult to adjust due to damage to the floor or contact resistance between the floor and the floor. It does not get lost. Also, there is no need to equip the floor with bearings.

In addition, the screw shaft can slightly swing (tilt) in all directions with respect to the floor support. In this way, even if the floor is inclined and the floor is inclined, the floor changes relative to the screw axis and absorbs the inclination of the floor. However, unlike the conventional case, it becomes difficult to keep the mounted object horizontal, and the screw shaft is inclined with respect to the vertical direction in which the load acts, so that the shaft can be prevented from being broken by a large load. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view showing a first embodiment of an aging device with a casing device according to the present invention.

FIG. 2 is a longitudinal sectional view showing the first embodiment.

FIG. 3 is an enlarged longitudinal sectional view showing the vicinity of a mounting portion of a shaft support nut to a floor contact body in the first embodiment.

FIG. 4 is an enlarged longitudinal sectional view showing the shaft support nut before caulking in the first embodiment.

FIG. 5 is a longitudinal sectional view showing a state in which the mounted object is moved in the first embodiment.

FIG. 6 is a longitudinal sectional view showing a state in which height adjustment is performed in the first embodiment. FIG. 7 is a longitudinal sectional view showing a state where the height adjusted in the first embodiment is locked.

FIG. 8 is a longitudinal sectional view showing a second embodiment of an azimuth set with a casing set according to the present invention.

FIG. 9 is a perspective view showing a third embodiment of the cascading machine according to the present invention.

FIG. 10 is a longitudinal sectional view showing the third embodiment.

FIG. 11 is an enlarged longitudinal sectional view showing the vicinity of a mounting portion of a shaft support to a floor contact body in the third embodiment. FIG. 12 is an enlarged sectional view taken along line XII-XII in FIG.

FIG. 13 is a longitudinal sectional view showing a state in which the mounted object is moved in the third embodiment.

FIG. 14 is a longitudinal sectional view showing a state in which height adjustment is performed in the third embodiment.

FIG. 15 is a longitudinal sectional view showing a state where the height adjusted in the third embodiment is locked. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described based on examples. 1 to 7 show a first embodiment of the present invention. In this embodiment, the floor mat 2 of the ladder 1 with a casserole is made of metal, has a substantially dome shape, and has a space 3 formed therein, and the inner space 3 and the outer space 3 are formed at the bottom. A circular opening 4 is provided to make the space continuous. An annular flange 5 is formed on the periphery of the opening 4 (the periphery of the bottom of the flooring body 2). As shown in FIG. 3, a circular mounting hole 6 is provided at the apex of the floor contact body 2, and a shaft supporting nut 7 made of metal is caulked to the mounting hole 6. Have been.

FIG. 4 shows the shape of the shaft support nut 7 before being caulked to the floor support 2, and the cylindrical portion 7 is provided on the lower seat surface side of the hexagonal nut so as to be coaxial with the axis of the nut 7. a is formed to protrude integrally. As shown in FIG. 3, the shaft support nut 7 is inserted into the mounting hole 6 through the cylindrical portion 7a from above, then the tip of the cylindrical portion 7a is opened outward and plastically deformed. As a result, it is caulked and attached to the flooring unit 2 so that the axial direction faces up and down, with some play (gazing). The shaft support nut 7 is attached to the flooring body 2 with a slight play as described above, so that it is indicated by a dashed line and a two-dot chain line in FIG. As described above, the axial direction of the nut 7 can slightly swing (tilt) in all directions with respect to the floor 2 (for example, the nut 7 can swing about 1 to 10 degrees with respect to the axial direction of the floor 2). It is preferable to be able to rotate around the axis with respect to the floor contact body 2.

A male screw portion 9 is provided on the outer peripheral portion of the metal screw shaft 8 over substantially the entire length thereof. In the middle part of the screw shaft 8 in the longitudinal direction, a rotation operation part 10 composed of a nut is screwed to the male screw part 9 and the pin 11 is connected to the rotation operation part 10 and the screw shaft. It is fixed by being press-fitted in the radial direction to 8. Here, the rotation operation portion 10 has a flange shape by protruding from the intermediate portion of the screw shaft 8 in the radial direction of the screw shaft 8. A portion of the male screw portion 9 on the upper end side of the rotary operation portion 10 constitutes a male screw portion 9a for an attached object, while a portion of the male screw portion 9 on the lower end side of the rotary operation portion 10. Constitutes a male thread portion 9 b for elevating the cascade. The nut 12 for locking is screwed into the male screw portion 9a for the attached object of the screw shaft 8 described above.

The screw shaft 8 vertically penetrates the floor contact body 2 in a state where the external thread portion 9 b for elevating and lowering the casing is screwed to the shaft support nut 7. Here, as described above, since the shaft support nut 7 can slightly swing (tilt) in all directions with respect to the flooring body 2, as shown by a dashed line in FIG. 8 also can slightly swing (tilt) in all directions with respect to the floor 2. At the lower end of the screw shaft 8, a polecassette 13 is attached. The pole caster 13 includes a caster body 14 fixed to the lower end of the screw shaft 8, a spherical wheel 15, and a bearing interposed between the caster body 14 and the wheel 15. 1 and 6. The manner in which the bearing 16 is interposed between the casing body 14 and the wheels 15 is not necessarily the embodiment as in the present embodiment, and in some cases, the bearing is not interposed. You may. Next, the method of use and operation of this embodiment will be described. By grasping the rotation operation unit 10 by hand (and picking it with a finger), the screw shaft 8 is rotated integrally with the rotation operation unit 10 with respect to the shaft support nut 7 (of course, a tool such as a wrench (not shown)). The screw shaft 8 may be rotated by fitting to the rotary operation unit 10), and the screw shaft 8 is lowered with respect to the floor support 2 so that the wheels 1 5 The lowermost part of the projecting part projects below the opening 4 of the flooring body 2. In this state, as shown in Fig. 5, by screwing the male screw portion 9a for the mounting object of the screw shaft 8 into the screw hole 18 provided at the bottom or the like of the mounting object 17 to an appropriate depth, Attach it to the object 17. When screwing the screw shaft 8 into the screw hole 18 of the object 17 in this manner, a tool such as a wrench (spanner) is fitted into the rotation operation unit 10 to rotate the screw shaft 8 (of course, If you can screw it in only by hand, you do not need to use a tool). Normally, screw holes 18 are provided at the four corners at the bottom of the object 17 to be mounted, and the screw shaft 8 of an Ayasushi with a casing screw is screwed into each of the four screw holes 18. In addition, of course, after screwing the male screw portion 9a for the mounted object into the screw hole 18 with the lowermost portion of the wheel 15 being retracted above the opening 4, the grounding body 2 is screwed to the screw shaft 8. It is also possible to raise the lower part of the wheels 15 of the casters 13 to protrude below the openings 4.

With the wheels 15 protruding from the floor 2 as described above, the wheels 15 are rolled on the floor surface 19 as shown by the arrow A in FIG. 7 can be easily moved to a desired position.

When adjusting the height after moving the object 17 to the desired position, hold the floor 2 by hand and fit a tool such as a wrench (spanner) into the shaft support nut 7. By rotating the shaft support nut 7 with respect to the screw shaft 8, the shaft support nut 7 and thus the floor 2 are lowered with respect to the screw shaft 8 as shown in Fig. 6, and the opening 4 of the floor 2 is floored. The lower surface of the wheel 15 is brought into contact with the surface 19 so as to be retracted above the opening 4 of the floor contact body 2. At this time, the screw shaft 8 screwed into the screw hole 18 does not rotate Therefore, the screwing depth of the screw shaft 8 into the screw hole 18 does not change. Also, if the shaft support nut 7 can be rotated only by hand, a tool is not required. Thereafter, a tool such as a wrench (wrench) is fitted into the rotary operation part 10 without blocking the co-rotation of the shaft support nut 7, and the screw shaft 8 is inserted into the screw hole 18 of the object 17. By adjusting the screwing depth of the screw shaft 8 into the screw hole 1 8 by turning the screw, the height can be adjusted as shown by the arrow B in FIG. Corotates with the screw shaft 8, so that the opening 4 of the floor 2 comes into contact with the floor surface 19, and the lowermost part of the wheel 1 5 is drawn above the opening 4 of the floor 2. State is maintained as it is). Also in this case, of course, if the screw shaft 8 can be rotated only by hand, a tool need not be used. After the height adjustment is completed, the adjusted height can be locked by tightening the lock nut 12 as shown by the arrow C in FIG.

If further fine adjustment of the height is required after the above lock, the shaft support nut 7 is rotated with respect to the screw shaft 8 within a range where the wheels 15 do not protrude from the opening 4, By raising and lowering the shaft support nut 7 and thus the floor 2 with respect to the screw shaft 8, fine adjustment of the height can be performed without the need for re-loosening the lock nut 12.

Since the casters 1 with casters 1 accommodate the casters 13 inside the floor 2, the size can be reduced.

In addition, since the height can be adjusted by rotating the screw shaft 8 by operating the rotation operation unit 10 provided in the intermediate portion of the screw shaft 8, the height of the mounting member 17 can be adjusted above the azimuth bracket 1. It can be used even when there is no open part where the tool can be inserted in the part where

Also, when adjusting the height, even if the screw shaft 8 is rotated, the floor unit 2 does not rotate, so the floor surface 19 may be damaged or the floor unit 19 may be in contact with the floor surface 19. Adjust by resistance Is difficult to do. Therefore, it is not necessary to equip the floor 2 with bearings.

Also, since the screw shaft 8 can slightly swing (tilt) in all directions with respect to the floor 2, even if the floor 19 is tilted and the floor 2 is also tilted, Since the floor contact 2 changes its angle relative to the screw shaft 8 to absorb the inclination of the floor, it is difficult to keep the mounted object horizontal as in the past, or in the vertical direction where a load acts. On the other hand, the screw shaft 8 is inclined, so that the screw shaft 8 can be prevented from being broken by a large load.

In the first embodiment of FIGS. 1 to 7 described above, a pole caster having a spherical wheel 15 is used as the caster 13. However, in the present invention, a normal caster having a roller or a disk-shaped wheel is used in the present invention. Other types of Cass evenings can also be used. FIG. 8 shows a second embodiment of the present invention using a normal casing 20. In this embodiment, a normal casing 20 having a roller or a disk-shaped wheel 21 is attached to the lower end of the screw shaft 8. Other configurations are the same as in the first embodiment. In this embodiment, the same operation and effect as those of the first embodiment can be obtained.

9 to 15 show a third embodiment of the present invention. In this embodiment, a shaft support 22 made of metal is caulked and attached to the floor support 2 instead of the shaft support nut 7 in each of the above embodiments. The shaft support 22 has a cylindrical shape, and is provided with an annular protrusion 23 around the lower end in the vicinity of the lower end, as shown in FIG. 11 from above. The upper end of the shaft support 22 is passed through the mounting hole 6 and the lower end 22 a is opened to the outside so that there is some play (gauge) due to plastic deformation. It is caulked and attached to the flooring body 2 so as to face. Here, the shaft support 22 is attached to the floor support 2 with a slight play as described above, so that the axial direction of the shaft support 22 is opposite to the floor support 2. It is possible to swing (tilt) slightly in all directions (for example, it is preferable to be able to swing about 1 to 10 degrees with respect to the axial direction of the floor 2). On the other hand, it can rotate around the axis.

A slot 24 is provided in the peripheral wall of the shaft support 22, and the slot 24 is formed with a vertical portion 24 a extending upward and downward, and a horizontal portion from the upper end of the vertical portion 24 a. An upper lateral portion 24 extending in the direction (circumferential direction) and a lower lateral portion 24c extending in the lateral direction (circumferential direction) from the lower end of the vertical portion 24a are provided.

The screw shaft 8 ′ corresponds to the screw shaft 8 in each of the above embodiments. However, unlike the screw shaft 8 in each of the above embodiments, a portion of the screw shaft 8 ′ below the rotary operation unit 10 is different. Does not have a male thread 9 ′, so there is no portion corresponding to the male thread 9 for raising and lowering the cas. A projection 25 made of a pin is press-fitted and fixed to an intermediate portion of the screw shaft 8 ′ and a portion below the rotary operation portion 10 so as to project radially from the screw shaft 8 ′. The screw shaft 8 ′ is supported by the shaft support 22 in a state where the screw shaft 8 slidably penetrates the shaft support 22 in the axial direction with respect to the shaft support 22. 'Also penetrates the floor 2 vertically. As described above, since the shaft support 22 can slightly swing (tilt) in all directions with respect to the floor support 2 as described above, as shown by the dashed line in FIG. The screw shaft 8 ′ can also slightly swing (tilt) in all directions with respect to the floor anchor 2.

The protruding portion 25 is fitted in the groove 24, and as shown in FIGS. 10 and 13 to 15, the vertical portion 24a, the upper horizontal portion 24b and the lower portion of the groove 24. When the protrusions 25 are engaged with the lower side portions 24c as shown in Fig. 13, the wheels 1 While the lowermost part of 5 protrudes below the opening 4 of the floor 2, the protruding part 25 fits into the upper lateral part 24 b as shown in FIGS. 10, 14 and 15. When they are joined, the bottom of wheels 15 will be higher than opening 4 It is in a state of being retracted. Other configurations are the same as those of the first embodiment shown in FIGS.

Next, the method of use and operation of this embodiment will be described. With the protruding portion 25 fitted to the vertical portion 24a, raise the shaft support 22 with respect to the screw shaft 8 ', and as shown in FIG. The lowermost part of 5 protrudes below the opening 4 of the floor support 2, and the screw shaft 8 ′ is rotated relative to the shaft support 22 so that the protruding part 25 is below the slot 24. By entering the lateral portion 24c, the protruding state of the wheel 15 is maintained. In this state, as shown in Fig. 13, screw the male screw part 9a 'of the screw shaft 8' into the screw hole 18 provided at the bottom of the object 17 with an appropriate depth. Attach the caster-mounted adjuster 1 to the object 17. When screwing the screw shaft 8 ′ into the screw hole 18 of the workpiece 17 in this way, a tool such as a wrench (spanner) is fitted into the rotary operation unit 10 to rotate the screw shaft 8 ′ ( Of course, if you can screw it in only by hand, you do not need to use any tools.) Of course, with the lowermost part of the wheel 15 pulled in above the opening 4, the male screw part 9a 'for the object to be mounted is screwed into the screw hole 18 and the shaft is supported by the screw shaft 8'. It is also possible to raise the body 2 2, and thus the floor 2, so that the lowest part of the wheels 15 of the casing 13 protrudes downward from the opening 4.

As described above, by rolling the wheel 15 on the floor surface 19 with the wheel 15 protruding from the floor contact body 2, as shown by the arrow A in FIG. 17 can be easily moved to a desired position.

When adjusting the height after moving the object 17 to the desired position, raise the part of the object 17 where the adjuster 1 is attached to the screw shaft 8 '. After rotating the shaft support 22 to move the protrusion 25 from the lower horizontal portion 24 c to the vertical portion 24 a, as shown in FIG. Lower the body 2 so that the lowermost part of the wheel 15 is retracted above the opening 4 of the flooring body 2, and The protruding part 25 is inserted into the upper side part 24 b of the slot 24 so that the retracted state of the wheel 15 is maintained. The opening 4 is in contact with the floor 19. Thereafter, a tool such as a wrench (wrench) is fitted into the rotary operation unit 10 without blocking the co-rotation of the shaft supports 22, and the screw shaft 18 is screwed into the screw holes 18 of the mounting object 17. By rotating 8 ′ and adjusting the screwing depth of the screw shaft 8 ′ into the screw hole 18, the height can be adjusted as shown by the arrow B in FIG. After this height adjustment is completed, the adjusted height can be fixed by tightening the locking nut 12 as shown by the arrow C in FIG.

The present embodiment has an advantage that the wheels 15 of the casing 13 can be quickly moved in and out, but the work of lifting the mounting object 17 is required as described above. This is suitable when the attached object 17 is light enough to be lifted.

In each of the above embodiments, the floor support 2, the shaft support nut 7, the screw shafts 8 and 8 ', the shaft support 22 and the like are made of metal. In the present invention, these members are made of plastic. And other types of materials.

Also, in each of the above embodiments, the screw shafts 8 and 8 ′ and the separate members (hex nuts) are fixed to the screw shafts 8 and 8 ′ to form the rotation operation unit 10. The part 10 may be formed integrally with the screw shafts 8, 8 '. Further, the rotation operation unit 10 does not necessarily have to be hexagonal as in the embodiment. However, if a tool is to be fitted, it is preferable that the cross section be non-circular. If it is not planned to fit the tool but only to operate it by hand, the shape can be adapted to that. Industrial applicability As described above, the cascading window with the present invention according to the present invention is useful as a device for adjusting the height by being attached to an object to be mounted such as various devices, furniture, and display fixtures.

Claims

The scope of the claims

1. A space provided in the interior, a floor contact body having an opening at the bottom that is in contact with the floor surface, and a vertically penetrating penetrating body, and relatively to the floor contact body. A screw shaft supported by the floor contact member so as to be able to move up and down and rotate around the axis; and a fitting is provided when rotating the screw shaft provided at an intermediate portion in the length direction of the screw shaft. A rotating operation part to be fitted or grasped by hand; and an object to be mounted, which is provided on the outer periphery of the screw shaft on the upper end side with respect to the rotating operation part and is screwed into a screw hole provided in the object to be mounted. Male screw part, and a caster attached to the lower end of the screw shaft,

The screw shaft has a position where the lowermost part of the wheel of the casserole projects below the opening of the flooring body relative to the flooring body and the lowermost part of the wheel is above the opening part. An azias evening with a casing which can be moved up and down relatively between a position to be drawn into the vehicle and held at the two positions.

2. The caster bearing according to claim 1, wherein the screw shaft is supported by the floor contact so as to be able to slightly swing in all directions with respect to the floor contact.

3. The adjuster with casings according to claim 2, wherein the screw shaft can swing by 1 to 10 degrees with respect to the axial direction of the floor contact body.

4. A caster elevating male screw portion provided on the outer periphery of the screw shaft at the lower end side from the rotary operation portion, and the axial direction is vertically oriented, and the axial direction of the bracket is any direction relative to the floor contact body. A shaft support nut attached to the floor support so as to be able to swing slightly in the direction and to be rotatable about the axis with respect to the floor support. 4. An azias evening with a casing as set forth in claim 2 or 3, wherein a male thread for raising and lowering the cas of the shaft is screwed.

5. The shaft support nut is formed by projecting a cylindrical portion from one seat surface side of the nut so as to be coaxial with the axis of the nut before being attached to the floor contact body. The cylindrical part is passed through a nut mounting hole provided in the floor contact body, and the tip of the cylindrical part is plastically deformed. 5. Ayas evening with a cas evening as claimed in claim 4.

6. The contact direction is such that the axial direction is in the vertical direction, the axial direction of the bracket can slightly swing in all directions with respect to the floor contact body, and the bracket can rotate around the axis with respect to the floor contact body. The azimuth bearing with a casing according to claim 2 or 3, further comprising six shaft supports attached to the floor, wherein the screw shaft is supported so as to be slidable in the axial direction.

7. The shaft support has a cylindrical shape, a groove provided in a peripheral wall of the shaft support, and a groove provided on the screw shaft so as to protrude in a radial direction from the screw shaft. A protruding portion fitted into the hole, wherein the slot is a vertically extending portion extending vertically, an upper lateral portion extending laterally from an upper end of the vertically extending portion, and an upper lateral direction. A lower lateral portion extending laterally from a lower end of the portion, wherein the protrusion is capable of entering any of the above-described vertical portion, the upper lateral portion, and the lower lateral portion. When the protruding portion enters the lower lateral portion, the lowermost portion of the wheel of the above-mentioned cascade protrudes downward from the opening of the floor contact body, When the protruding portion enters the upper lateral portion, the lowermost portion of the wheel 7. The cascading azimuth as claimed in claim 6, wherein the boss is drawn upward from the opening.

8. The diaper set with a casper set according to any one of claims 1 to 7, further comprising a lock nut screwed into the male thread portion for the mounted object of the screw shaft.

9. The azimuth bearing with a casing according to any one of claims 1 to 8, wherein the rotary operation part has a hexagonal cross section.

10. The adjuster with casters according to claim 9, wherein the rotation operating portion is formed of a hexagon nut that is non-rotatably attached to the screw shaft.