JP2007118631A - Adjuster/caster device, caster device, and adjuster device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adjuster/caster device capable of attaching and detaching a caster device to and from an adjuster device, the caster device, and the adjuster device. <P>SOLUTION: This adjuster device 1 has a base body 2 mounted to an attached material 15, an elevation shaft 12 screwed with the base body 2 and rotating so as to elevate relative to the base body 2, and a floor contact body 14 mounted to a bottom end of the elevation shaft 12. Then, a caster device 18 has a wheel supporting body 19 detachably mounted to the base body 2, and a wheel 21 supported to the wheel supporting body 19. Furthermore, a range capable of elevating the elevation shaft 12 to the base body 2 ranges from a position where the bottom of the contact floor body 14 is lowered from the lowermost part of the wheel 21 to a position where it is raised from the lowermost part of the wheel 21, under a condition that the wheel supporting body 19 is mounted to the base body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an adjuster and caster device, a caster device, and an adjuster device that are attached to an object to be attached such as various devices, furniture, display fixtures, etc., to facilitate the movement of the object to be attached and to allow height adjustment. .

Conventionally, as disclosed in Patent Documents 1 and 2, for example, an adjuster device and a caster device are integrated, and the caster device is rotatable around an axis extending in the vertical direction of the adjuster device. There was also a caster device. Such an adjuster and caster device has an advantage that the device can be made compact compared to the case where the adjuster device and the caster device which are mutually attached are attached to the attachment object.
Japanese Patent Laid-Open No. 5-116502 Japanese Utility Model Publication 4-106001

  However, in the conventional adjuster and caster device, since the adjuster device and the caster device are integrated, there is a problem that the cost is naturally higher than that of the adjuster 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 adjuster device alone because the load resistance of the caster device must be increased.

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

  The present invention has been made in view of such conventional circumstances, and one object of the present invention is to provide an adjuster and caster device, a caster device, and an adjuster device that can be attached to and detached from the adjuster device. Objective.

  Another object of the present invention is to provide an adjuster and caster device, a caster device, and an adjuster device that can be easily attached to and detached from the adjuster device without lifting an attached object.

  Another object of the present invention is an adjuster and caster device, a caster device, and an adjuster 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 is to provide an apparatus.

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

The 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 configured to be movable 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 rotated with respect to the base body. A lifting shaft, and a floor-attached body rotatably attached to the lifting shaft at a lower end portion of the lifting shaft;
The caster device is detachably attached to the base body of the adjuster device so as to be rotatable about an axis extending in the vertical direction with respect to the base body, and is rotatable on the wheel support body. Having supported wheels,
The range in which the adjuster device 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 descends from the lowermost part of the wheel when the wheel support is attached to the base body. And the position where the wheel will rise from the lowermost part of the wheel.

  In this adjuster and caster device, when the caster device is not attached to the adjuster device, the floor contact body can be lifted and lowered with respect to the base body by rotating the lifting shaft with respect to the base body of the adjuster device. Therefore, if the base body of the adjuster device is attached to the attachment object, the height of the attachment object from the floor surface can be adjusted by rotating the lifting shaft relative to the base body.

  In addition, if the caster device is attached to the adjuster device, the lifting shaft is raised with respect to the base body of the adjuster device, and the bottom of the floor-contacting body is pulled upward from the lowermost part of the wheel, the wheel comes into contact with the floor surface and comes into contact. Since the floor body is in a state of being lifted from the floor surface, the wheel is rolled on the floor surface, and the attached object can be easily moved on the floor surface.

  Even when the caster device is attached to the adjuster device, if the lowermost part of the wheel is raised from the floor, the height of the object to be attached is the same as when the caster device is not attached to the adjuster device. Although adjustment can be performed, as described above, since it is generally necessary to move the attachment using a caster device only when the attachment is first installed and when it is moved, Usually, it is not necessary to attach the caster device to the adjuster device.

  For this reason, when multiple attachments are used, it is not necessary to leave the caster device attached to the adjuster device attached to all attachments, and the attachments that need to be moved For the above, the caster device may be attached to the adjuster device. Therefore, it is not necessary to prepare a number of caster devices corresponding to all the attachments, and only a small number of caster devices need to be prepared (in other words, the total number of caster devices can be made smaller than the total number of adjuster devices). ), The user of the attached object can greatly reduce the cost required for the caster device.

Further, in one aspect of the adjuster and caster device of the present invention, and the caster device and the adjuster device of the present invention, the base of the adjuster device 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 shape is formed through the opening. 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 shaft is moved to the adjuster mounting portion from the direction perpendicular to the axial direction via the opening portion. The wheel support is moved by attaching the wheel support to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip after the accepting the shape-like portion. The base shaft portion is attached to the base shaft portion so as to be rotatable about the axis of the base shaft portion, and the state where the base shaft portion is sandwiched between the adjuster mounting portion and the sandwiching body is released. As described above, the base body shaft-shaped portion is allowed to escape from the adjuster mounting portion in a direction perpendicular to the axial direction via the opening portion in a state where the sandwiching body is moved or separated from the wheel support body. By, the wheel support is adapted to removable from said base shaft-like portion.

  In this case, if the base is sufficiently raised with respect to the floor surface by sufficiently lowering the lifting shaft of the adjuster with respect to the base in advance, the base shaft portion of the adjuster is relatively moved without lifting the attachment. It can be received by the adjuster mounting part of the caster device from the direction perpendicular to the axial direction through the open part, and conversely, it can be escaped from the adjuster mounting part in the direction perpendicular to the axial direction. The caster device can be easily attached to and detached from the adjuster device without lifting up.

  Since the caster device can be attached to and detached from the adjuster device, when multiple attachments are used, it is not necessary to prepare as many caster devices as the number corresponding to all the attachments, but only a small number need to be prepared. Therefore, the user of the attached object can greatly reduce the cost required for the caster device.

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

  1 to 3 show an adjuster device 1 according to a first embodiment of the present invention. In this adjuster device 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 integrally formed. 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. Accordingly, 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 portion 2c has a shape similar to that of a hexagon nut, and protrudes upward from the enlarged portion 2b. The mounting screw shaft 2d rises upward from the center 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 portion 2a so as to be rotatable concentrically with the base shaft portion 2a. The outer cylinder 6 is made of a metal such as steel, and flanges 6a and 6b are provided at upper and lower ends of the outer cylinder 6, respectively. As shown in FIG. 3, a circular upper raceway groove 7 when viewed from the axial direction is formed on the lower surface of the enlarged portion 2b, and a lower lower raceway groove 8 when 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 roll freely. 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 made of a rolling bearing is interposed. The second bearing 11 is not necessarily provided at the lower end portion of the outer cylinder 6, but is preferably provided at the lower end side.

  A male screw portion 12 a provided on the outer periphery of a lifting shaft 12 made of a metal such as steel is screwed into the female screw portion 3 of the screw hole 4 of the base 2. The total length of the male screw portion 12 a is longer than the total length of the female screw portion 3. In the vicinity of the lower end portion of the elevating shaft 12, a rotation operation portion 13 having a shape similar to a hexagon nut is integrally provided. A portion of the lifting shaft 12 below the rotary operation unit 13 is inserted into a center hole 14a provided at the center of a pedestal-shaped floor-contacting body 14 that is open 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 in the axial direction (up and down direction) (however, in use, the rotation operation unit 13 is connected to the floor contact body 14). 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 any direction with respect to the floor-contacting body 14. A locking nut 33 is screwed into the male threaded portion 12 a of the lifting shaft 12.

  Next, before describing the configuration of the caster device 18, first, the method of use and operation of the adjuster device 1 will be described. As shown in FIG. 4, the male screw portion 5 of the mounting screw shaft 2 d is screwed into the screw hole 15 a provided in the bottom portion of the attachment object 15 until the tool fitting portion 2 c comes into contact with the bottom portion of the attachment object 15. Thus, the base 2 is attached to the attachment 15. The mounting screw shaft 2d can be screwed into the screw hole 4 by fitting a tool such as a wrench into a regular hexagonal tool fitting portion 2c and rotating the base body 2 ( Of course, you can screw it in if you can). Usually, the adjuster device 1 is attached to each of the four corners of the bottom of one attached object 15 (a total of four adjuster devices are attached).

  In such an attached state, by rotating the rotary operation unit 13 to rotate the elevating shaft 12 with respect to the base 2 and ascending and descending as indicated by an arrow B in FIG. Therefore, the height H of the attachment 15 from the floor surface 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 and damages the floor surface 16 or the floor contact body 14 and the floor surface. Contact with 16 does not hinder the rotation of the lifting shaft 12. After the height adjustment is completed, if the lock nut 33 is tightened as shown by the arrow G in FIG. 4 and comes into contact with the lower end of the base shaft portion 2a as shown in FIG. 3, the adjusted height is locked. be able to.

  5 to 8 show a state where the caster device 18 is attached to the adjuster device 1 in this 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 the left and right sides of the wheel support 19 via axles 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 adjuster mounting portion 22 includes 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-shaped portion 2a of the adjuster device 1 can be received together with the outer cylinder 6 from a direction perpendicular to the axial direction through the opening 22b. . A hook engaging shaft 23 is attached 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.

  On the wheel support body 19, a sandwiching body 24 provided with arc-shaped receiving portions 24 a with a vertical interval is rotatable around a sandwiching body shaft 25 extending in a direction parallel to the axial direction of the adjuster mounting portion 22. Is attached. The sandwiching 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, a lever 26 that is curved in a generally letter-shape when viewed from above is provided at the distal end of the sandwich body 24 with a lever shaft 27 that extends in a direction parallel to the sandwich body shaft 25. It is attached so that it can rotate around. The intermediate bent portion of the lever 26 is made of a material having high spring properties such as spring steel, and a base end portion of a hook 28 that is curved in a generally arcuate shape as viewed from above is parallel to the sandwiching body shaft 25. A hook shaft 29 extending in the direction is attached to be rotatable. 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 the present embodiment including the caster device 18 will be described. First, as described above, as shown in FIG. 4, the adjuster device 1 is attached to the attachment 15, and the elevating shaft 12 is sufficiently lowered with respect to the base 2, so that the base 2 and the outer cylinder 6 are attached to the floor 16. Raise it enough. 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 22 b of the adjuster mounting portion 22 is opened, from a direction relatively perpendicular to the axial direction (generally horizontal). The base shaft-shaped portion 2a is intruded into the adjuster mounting portion 22 together with the outer cylinder 6 via the open portion 22b and is received (normally the adjuster device 1 supports the attachment 15 on the floor 16). 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 adjuster mounting portion 22. Next, as shown by an arrow C in FIG. 9, the pinch body 24 is turned around the pinch body shaft 25 in a direction to close the pinch body 24 (direction approaching the adjuster mounting portion 22), and the hook 28 is hook-engaged as shown in FIG. After engaging the shaft 23, if the lever 26 is rotated by a predetermined amount or more in a direction in which the distance between the hook shaft 29 and the hook engaging shaft 23 increases as shown by an arrow D in FIGS. Due to the elasticity of 28, the buckle mechanism is held in a tightened state. 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 is attached to the base shaft portion 2a via the outer cylinder 6 so as to be rotatable about the axis of the base shaft 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 way. In this attached state, the axis of the base shaft-like portion 2a of the adjuster device 1 and the axis of the adjuster mounting portion 22 of the caster device 18 coincide with each other. Further, the upper and lower receiving portions 22a of the adjuster mounting portion 22 and the upper and lower receiving portions 24a of the sandwiching body 24 are opposed to the upper and lower flange portions 6a and 6b of the outer cylinder 6, respectively. Thus, the base body 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 body 2, and the bottom of the floor-contacting body 14 is moved from the lowermost part of the wheel 21 as indicated by an arrow E in FIG. If the wheel 21 is pulled upward, the wheel 21 comes into contact with the floor surface 16 and the floor-contacting body 14 is lifted from the floor surface 16, so that the wheel 21 rolls on the floor surface 16 as indicated by the arrow F in FIG. The attachment 15 can be easily moved on the floor 16.

  The caster device 18 can be easily removed from the adjuster device 1 as follows. In the adjuster device 1, when the lifting shaft 12 is rotated together with the rotation operation unit 13 and lowered with respect to the base body 2, the floor contact body 14 comes into contact with the floor surface 16 as shown in FIG. The lower part is lifted from the floor surface 16 and the procedure opposite to that described above with reference to FIGS. 9 to 11 is performed, so that the base shaft-shaped part 2a is relatively moved from the adjuster mounting part 22 to the opening part 22b. If the wheel support 19 is escaped in a direction perpendicular to the axial direction, the wheel support 19 can be removed from the base shaft-shaped portion 2a, whereby the entire caster device 18 can be removed from the adjuster device 1.

  Even when the caster device 18 is attached to the adjuster device 1, if the lowermost part of the wheel 21 is lifted from the floor surface 16 as shown in FIG. 12, it is the same as when the caster device 18 is not attached. Although the height of the attachment 15 can be adjusted, it is generally necessary to move the attachment 15 using the caster device 18 when the attachment 15 is first installed. Therefore, it is not usually necessary to attach the caster device 18 to the adjuster device 1.

  Therefore, when a plurality of attachments 15 are used, it is not necessary to leave the caster device 18 attached to the adjuster device 1 attached to all of the attachments 15, and it is necessary to move. The caster device 18 may be attached to the adjuster device 1 only with respect to the attached object 15. Therefore, it is not necessary to prepare the number of caster devices 18 corresponding to all the attachments 15 and only a small number of caster devices 18 need to be prepared (in other words, the total number of caster devices 18 is made smaller than the total number of adjuster devices 1). The cost of the caster device 18 can be greatly reduced.

  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-shaped portion 2 a of the adjuster device 1 is moved. It 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 from the adjuster mounting portion 22 in the axial direction. On the other hand, the caster device 18 can be easily attached to and detached from the adjuster device 1 without lifting the attached object 15 because it can be escaped in the vertical direction.

  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, and the adjuster device 1. However, the caster device 18 needs to be able to rotate smoothly. Here, in the present embodiment, the first bearing 10 that receives a thrust load between the enlarged portion 2 b and the upper end portion of the outer cylinder 6 is between the outer periphery of the base shaft-shaped portion 2 a and the inner periphery of the outer cylinder 6. Since the second bearings 11 are interposed, the above requirement can be satisfied.

  In this embodiment, rolling bearings are used as the first and second bearings 10 and 11, but other types of bearings such as oilless bearings are used as the first and second bearings 10 and 11. Also good.

  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, and the rubber elastic layer 17 made of a material having rubber elasticity such as rubber or thermoplastic elastomer is fitted to the outer periphery of the hook engaging shaft 23. Has been. Other configurations are the same as those of the adjuster and caster device of the first embodiment.

  Also in this embodiment, after the hook 28 is engaged with the hook engaging shaft 23, the lever 26 is rotated by a predetermined amount or more in a direction in which the distance between the hook shaft 29 and the hook engaging shaft 23 is increased. 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 Example 1.

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

  In the third embodiment, the main portion of the first bearing 10 is mounted on the adjuster device 1, but the second bearing 11 is mounted on the caster device 18 side, and the outer cylinder 6 is either the adjuster device 1 or the caster device 18. In this way, the manufacturing cost of the adjuster device 1 is reduced.

  15 and 16 show the adjuster device 1 in this 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. 30 is attached. A required number of balls 9 are held between the upper raceway groove 7 and the retainer 30. Here, the upper raceway groove 7, the retainer 30 and the ball 9 constitute a main part of the first bearing 10 which is a rolling bearing capable of receiving a thrust load. Unlike the first embodiment, the adjuster device 1 is not provided with the outer cylinder 6 and the 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 taken along the line XVIII-XVIII in FIG. 17). FIG. 19 is a horizontal sectional view showing a state in which the base shaft-like portion 2a of the adjuster device 1 is received by the adjuster mounting portion 22 of the caster device 18 in the present embodiment, but the sandwiching body 24 is still open. (The position of the cross section corresponds to the XIX-XIX line in FIG. 18). As shown in these drawings, the wheel support 19 is provided with an adjuster mounting portion 22 that is recessed in a semicircular shape when viewed from above, and this adjuster mounting portion 22 is perpendicular to the axial direction ( An opening 22b (see FIG. 17) is provided in a direction that is generally horizontal when in use.

  As shown in FIG. 17, the semicircular shape constituting the remaining portion of the first bearing 10 is formed on the peripheral portion of the adjuster mounting portion 22 and the upper end portion of the sandwiching body 24 on the upper surface of the wheel support body 19. Split portions 8a and 8b of the lower raceway groove are provided, respectively. Then, when the sandwiching body 24 is closed in order to attach the caster device 18 to the adjuster device 1, the divided portions 8a and 8b of the lower raceway groove constitute 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 peripheral portion of the adjuster mounting portion 22 and the upper end portion of the sandwiching body 24 on the upper surface of the enlarged portion 2 b and the wheel support body 19. It will be interposed between.

  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 mounted with divided portions 11a and 11b obtained by dividing the second bearing 11 made of an oilless bearing into a semicircular shape, respectively. When the wheel support 19 is attached to the base shaft portion 2a of the adjuster device 1, the divided portions 11a and 11b are concentric, and the adjuster mounting portion 22 and the sandwiching body 24 and the base shaft portion. It comes to function as one second bearing 11 interposed between the outer periphery of 2a. Other configurations are the same as those of the first embodiment.

  In the present embodiment, the main part of the first bearing 10 is provided in the adjuster device 1, but the outer cylinder 6 and the second bearing 11 are not provided, so that the manufacturing cost of the adjuster device 1 can be reduced. The cost of the caster device 18 is increased by the amount of the second bearing 11 provided. However, since only a small number of caster devices 18 are prepared as compared with the adjuster device 1, the cost increase as a whole is small.

  In the present embodiment, a rolling bearing is used as the first bearing 10, but another type of bearing such as an oilless bearing may be used as the first bearing 10. In addition, although an oilless bearing is divided and used 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.

  20 to 22 show a fourth embodiment of the present invention. In the fourth embodiment, as shown in FIG. 20, the adjuster device 1 is not equipped with the outer cylinder 6 and the second bearing 11, but the circular upper raceway groove that constitutes a part of the first bearing 10. 7 is provided, and the main part of the first bearing 10 and the entire second bearing 11 are provided on the caster device 18 side, thereby reducing the manufacturing cost of the adjuster device 1.

  FIG. 21 is a plan view of the caster device 18 in this 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 this embodiment (the position of the cross section is taken along the line XXII-XXII in FIG. 20). Corresponding). As shown in these drawings, the main portion of the first bearing 10 is divided and provided on the peripheral portion of the adjuster mounting portion 22 and the upper end portion of the sandwiching body 24 on the upper surface of the wheel support body 19. Yes. That is, the semicircular lower raceway 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. When the sandwiching 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 raceway groove 7 on the adjuster device 1 side, one bearing (first bearing) One bearing 10) is formed. However, in order to prevent the ball 9 from dropping 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 ball bearings. The ball 9 cannot move toward the other divided portion 8a, 8b. The other configuration is the same as that of the adjuster device 1 of the third embodiment, and the second bearing 11 formed 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. The divided parts 11a and 11b are mounted.

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

In the present embodiment, the rolling bearing is divided and used as the first bearing 10, but another type of bearing such as an oilless bearing may be divided and used as the first bearing 10. In this embodiment, an oilless bearing is divided and used as the second bearing 11, but a rolling bearing may be divided and used as the second bearing 11 in the same manner as the first bearing 10. Further, 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 the present invention. The attachment of the base 2 of the adjuster device 1 to the attachment 15 may be performed by another method.

  Moreover, in each said Example, although the wheel 21 is made into roller shape, the wheel 21 may be spherical in this invention. In each of the above-described embodiments, a single caster device 18 is a so-called double wheel in which two wheels 21 are provided. However, in the present invention, a single caster device may be provided with only one wheel. Good.

  Further, in each of the above embodiments, the sandwiching body 24 is pivoted in the form of a hinged door. However, in the present invention, the sandwiching body 24 is opened and closed in a manner other than the pivoting motion. For example, the sandwiching body 24 is supported by 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. 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. On the other hand, when the caster device 18 is removed, the sandwiching body 24 is stored on the wheel support 19 side. You may make it move to a position. Moreover, you may enable it to isolate | separate the pinching body 24 completely from the wheel support body 19 at the time of removal.

  Further, as a 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 but also other types of buckle mechanisms may be used (for example, each embodiment In place of the hook 28, a mechanism in which a member having a curved wire is engaged with the wheel support 19 side may be used. Further, for example, it may be fixed by means other than the buckle mechanism, such as fastening means such as bolts and nuts.

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

  As described above, the present invention is useful as a device that is attached to an object to be attached such as various devices, furniture, display fixtures and the like to facilitate the movement of the object to be attached and adjust the height.

It is a perspective view which shows the adjuster apparatus in Example 1 of this invention. It is a front view which shows the said adjuster apparatus. It is a longitudinal cross-sectional view which shows the said adjuster apparatus. It is a longitudinal cross-sectional view which shows the state which attached the said adjuster apparatus to the to-be-attached object. It is a perspective view from the front side which shows the state which attached the caster apparatus to the adjuster apparatus in the said Example 1. FIG. It is a perspective view from the back side which shows the state which attached the caster apparatus to the adjuster apparatus in the said Example 1. FIG. It is a top view which shows the state which attached the caster apparatus to the adjuster apparatus in the said Example 1. FIG. It is a rear view which shows the state which attached the caster apparatus to the adjuster apparatus in the said Example 1. FIG. It is a top view which shows the state which opened the clamping body in the process in which a caster apparatus is attached to an adjuster apparatus in the said Example 1. FIG. It is a top view which shows the state which engaged the hook of the buckle mechanism with the hook engagement axis | shaft in the process which attaches a caster apparatus to an adjuster apparatus in the said Example 1. FIG. FIG. 3 is a plan view showing a state where a buckle mechanism is tightened by rotating a lever in the process of attaching the caster device to the adjuster device in the first embodiment. In the said Example 1, it is a side view which shows the state which attached the caster apparatus further to the adjuster apparatus attached to the to-be-attached object. It is a side view which shows the state which pulled up the flooring body from the state of FIG. 12, lifted from the floor surface, and made the wheel of a caster apparatus contact the floor surface. It is a top view which shows the clamping body vicinity of the caster apparatus in Example 2 of this invention. It is a longitudinal cross-sectional view which shows the adjuster apparatus in Example 3 of this invention. FIG. 16 is an enlarged view showing the vicinity of a first bearing of the adjuster device of FIG. 15. It is a top view which shows the caster apparatus in the said Example 3. In the said Example 3, it is a longitudinal cross-sectional view which shows the state which attached the caster apparatus to the adjuster apparatus (The position of a cross section respond | corresponds to the XVIII-XVIII line of FIG. 17). In Example 3, the base shaft portion of the adjuster device is received by the adjuster mounting portion of the caster device, but the sandwiching body is still open (the position of the cross section is shown in FIG. 18). Corresponding to XIX-XIX line). It is a longitudinal cross-sectional view which shows the adjuster apparatus in Example 4 of this invention. It is a top view which shows the caster apparatus in the said Example 4. In the said Example 4, it is a longitudinal cross-sectional view which shows the state which attached the caster apparatus to the adjuster apparatus (The position of a cross section respond | corresponds to the XXII-XXII line | wire of FIG. 21).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adjuster apparatus 2 Base body 2a Base shaft-shaped part 2b Enlarged part 3 Female thread part 4 Screw hole 6 Outer cylinder 7 Upper raceway groove 8 Lower raceway groove 8a, 8b Split part of lower raceway groove 9 Ball 10 First bearing 10a, 10b Divided portion of first bearing 11 Second bearing 11a, 11b Divided portion of second bearing 12 Elevating shaft 12a Male thread portion 13 Rotating operation portion 14 Floor contact body 15 Mounted object 16 Floor surface 18 Caster device 19 Wheel support Body 21 Wheel 22 Adjuster mounting part 22b Opening part 24 Clamping body 25 Clamping body axis

Claims (11)

It has an adjuster device and a caster device that can be attached to and detached from the adjuster device.
The adjuster device is configured to be movable 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 rotated with respect to the base body. A lifting shaft, and a floor-attached body rotatably attached to the lifting shaft at a lower end portion of the lifting shaft;
The caster device is detachably attached to the base body of the adjuster device so as to be rotatable about an axis extending in the vertical direction with respect to the base body, and is rotatable on the wheel support body. Having supported wheels,
The range in which the adjuster device 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 descends from the lowermost part of the wheel when the wheel support is attached to the base body. An adjuster and caster device extending between a position where the wheel is located and a position where the wheel is lifted from the lowermost part of the wheel. The base body of the adjuster device has a base shaft-like 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 shape is formed through the opening. 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 shaft is moved to the adjuster mounting portion from the direction perpendicular to the axial direction via the opening portion. The wheel support is moved by attaching the wheel support to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip after the accepting the shape-like portion. The base shaft portion is attached to the base shaft portion so as to be rotatable about the axis of the base shaft portion, and the state where the base shaft portion is sandwiched between the adjuster mounting portion and the sandwiching body is released. As described above, the base body shaft-shaped portion is allowed to escape from the adjuster mounting portion in a direction perpendicular to the axial direction via the opening portion in a state where the sandwiching body is moved or separated from the wheel support body. It allows the adjuster and caster apparatus of claim 1, wherein said wheel support member is adapted to removable from said base shaft-like portion.   The adjuster and caster device according to claim 2, wherein the sandwiching 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. .   The adjuster and caster device 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. The adjuster device has an outer cylinder provided on the outside of the base shaft-shaped portion so as to be concentrically rotatable with respect to the base shaft-shaped portion,
The said base shaft-shaped part is received by the said adjuster mounting part with the said outer cylinder, and is sandwiched between the said adjuster mounting part and the said clamping body via the said outer cylinder. The adjuster and caster device described in 1. 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. The adjuster and caster device according to claim 5 further comprising: The base body 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 peripheral part of the adjuster attaching part among the enlarged part and the upper surface of the wheel support; and The first bearing interposed between the upper end portions of the sandwiching body, the adjuster mounting portion and the sandwiching body are divided and mounted, and the wheel support is attached to the base shaft-shaped portion. 5. The adjuster and caster device according to claim 2, 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. The base body 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 mounted by being divided into a peripheral portion of the adjuster mounting portion and an upper end portion of the sandwiching body on the upper surface of the wheel support, and the wheel support is attached to the base shaft-shaped portion. A first bearing interposed between the enlarged portion and the peripheral portion of the adjuster mounting portion and the upper end portion of the sandwiching body of the upper surface of the wheel support, the adjuster mounting portion, and the clamp And is mounted between the adjuster mounting part and the sandwiching body and the outer periphery of the base shaft part when the wheel support is attached to the base shaft part. The adjuster and caster device according to any one of claims 2 to 4, further comprising a second bearing.   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 an outer periphery of the lifting shaft. The adjuster and caster device according to any one of claims 2 to 8, wherein the adjuster and caster device is provided and has a male screw portion screwed into the female screw portion. A base body to be attached to an object to be attached, a base shaft-shaped portion extending in the vertical direction provided in the base body, a screw hole provided in the base shaft-shaped portion and extending along the axis of the base shaft-shaped portion; An internal thread portion provided on the inner periphery of the screw hole and an external thread portion on the outer periphery are provided. The external thread portion is screwed into the internal thread portion and rotated with respect to the base body to rotate the base body. A caster device that is detachably attached to an adjuster device having a lifting shaft that can be moved up and down, and a floor contact body that is rotatably attached to the lifting shaft at a lower end portion of the lifting shaft. There,
A wheel support having an opening portion in a direction perpendicular to the axial direction, and 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 that is 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 shaft is moved to the adjuster mounting portion from the direction perpendicular to the axial direction via the opening portion. The wheel support is moved by attaching the wheel support to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip after the accepting the shape-like portion. The base shaft portion is attached to the base shaft portion so as to be rotatable about the axis of the base shaft portion, and the state where the base shaft portion is sandwiched between the adjuster mounting portion and the sandwiching body is released. As described above, the base body shaft-shaped portion is allowed to escape from the adjuster mounting portion in a direction perpendicular to the axial direction via the opening portion in a state where the sandwiching body is moved or separated from the wheel support body. By the wheel supports are so removed from the base shaft-like portion,
The range in which the lifting shaft can move in the axial direction with respect to the base body is a position where 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 is lifted from a lowermost part 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 in the base body, a screw hole provided in the base shaft-shaped portion and extending along the axis of the base shaft-shaped portion; An internal thread portion provided on the inner periphery of the screw hole and an external thread portion on the outer periphery are provided. The external thread portion is screwed into the internal thread portion and rotated with respect to the base body to rotate the base body. An adjuster device having an elevating shaft that can be raised and lowered, and a floor contact body that is rotatably attached to the elevating shaft at a lower end portion of the elevating shaft,
The caster device has an opening portion in a direction perpendicular to the axial direction, and a wheel support provided with an adjuster mounting portion through which the base shaft-shaped portion can be received from a direction perpendicular to the axial direction. And a wheel rotatably supported by the wheel support, and a sandwiching body that is 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 shaft is moved to the adjuster mounting portion from the direction perpendicular to the axial direction via the opening portion. The wheel support is moved by attaching the wheel support to the wheel support so that the base shaft-shaped portion is sandwiched between the adjuster mounting portion and the clip after the accepting the shape-like portion. The base shaft portion is attached to the base shaft portion so as to be rotatable about the axis of the base shaft portion, and the state where the base shaft portion is sandwiched between the adjuster mounting portion and the sandwiching body is released. As described above, the base body shaft-shaped portion is allowed to escape from the adjuster mounting portion in a direction perpendicular to the axial direction via the opening portion in a state where the sandwiching body is moved or separated from the wheel support body. By the wheel supports are so removed from the base shaft-like portion,
The range in which the lifting shaft can move in the axial direction with respect to the base body is a position where 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 the lowermost position of the wheel and the position where the wheel will rise.

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