JPH09296649A - Roller device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and easily correct errors when the errors occur in a mount position of a holder by providing a roller supporting means between the center of rotation of the holder and that of a roller, and an axial position adjusting means for moving and adjusting the roller in a direction of a rotation axis. SOLUTION: A roller supporting means comprises a cylindrical shaft 15 and a receiving shaft 16. A shaft axis adjusting means comprises a female thread 17 formed in the inner periphery of the shaft 15, a threaded member 18, a first rotation regulating part for regulating the relative rotation between the receiving shaft 16 and the shaft 15, and a second rotation regulating part for regulating the relative rotation between the shaft 16 and a holder 7. And in the event of assembling error, in which a mount position of the holder 7 is displaced in a direction X1 of a rotation axis, the member 18 is rotationally operated to adjust and move the shaft 15 and a roller 6 in the direction X1 with respect to the shaft 16 which is fitted in the holder 7. As a result, an adjustment can be rapidly and easily made without replacing the holder as conventionally required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door for opening and closing a sliding door along a rail, or a traveling guide wheel for preventing a moving body from contacting a wall or the like beside a traveling path. Roller device used as
More specifically, the present invention relates to a roller device in which a holder rotatably supports a roller that rolls along a rolling surface.

[0002]

2. Description of the Related Art In a conventional roller device, the roller is rotatably fitted and held by a fixed shaft of the holder, which is erected over side walls facing each other in the direction of the axis of rotation of the roller. .

[0003]

In the conventional roller device described above, since the mounting position of the roller with respect to the holder in the direction of the rotation axis is fixed, the mounting position of the holder deviates in the direction of the rotation axis. When an assembling error such as the above occurs, it becomes impossible to roll the roller along a predetermined rolling path. In particular, when the sliding door is used as a door roller, since the sliding doors may come into contact with each other, there is a problem that the holder needs to be reattached. In addition, when used as a door roller of a sliding door, the sliding doors may come into contact with each other due to the warp of the door itself. In this case, in the conventional roller device, the mounting position of the holder with respect to the sliding door is changed. Since it is necessary to replace the door in the direction of the axis of the rotary shaft by the amount corresponding to the warp of the door, there is a problem that the replacement requires a great deal of labor and labor. Therefore, the roller is loosely fitted to a fixed shaft laid across the side wall of the holder in a state of being rotatable and movable in the direction of the axis of rotation, and the axis of rotation of the roller and both side walls It is conceivable that the roller is allowed to move in the direction of the axis of rotation within the range of the gap (play) existing between the facing surfaces in the direction. When an external force in the direction is applied, the roller moves in the direction of the rotation axis along the fixed axis,
In particular, when the sliding door is used as a door roller, not only the sliding doors may sway during the opening / closing operation, but also the sliding doors may come into contact with each other.

The present invention has been made in view of the above circumstances, and an object thereof is to change the mounting condition when an error occurs in the mounting position of the holder or due to use such as warpage. An object of the present invention is to provide a useful roller device which can be dealt with quickly and easily without changing the holder even when it occurs, and can easily make the device compact.

[0005]

A characteristic structure of a roller device according to claim 1 of the present invention for achieving the above-mentioned object is described with reference to the numbers used in the embodiments to be described later. In the configuration, the roller 6 is relatively rotatable between the holder 7 and the center of rotation of the roller 6,
Further, there is provided a roller supporting means A for movably supporting the rotation axis X1 direction and a shaft center position adjusting means B for moving and adjusting the roller 6 in the rotation axis X1 direction. According to the above characteristic configuration, even if an assembly error occurs such that the mounting position of the holder is displaced in the rotation axis direction, the roller itself can be moved and adjusted in the rotation axis direction by the axis position adjusting means. , It is not necessary to modify the mounting position of the holder one by one. Further, when the sliding door is used as a door roller, even if the sliding doors come into contact with each other due to the warp of the doors, the mounting position of the roller with respect to the holder is adjusted in the rotational axis direction. As a result, it is possible to avoid contact between the sliding doors without modifying the mounting position of the holder with respect to the sliding doors. Therefore, even if an error occurs in the mounting position of the holder, or even if the mounting conditions change due to use such as warpage, it is possible to quickly and easily cope with it without changing the holder one by one as in the conventional case. it can. Moreover, since the shaft center position adjusting means is provided between the holder and the center of rotation of the roller, for example, in the holder and outward of the rolling surface of the roller in the radial direction of rotation. An intermediate support member that is swingable in the direction of the rotation axis of the roller is pivotally attached to the positioned portion, and a support shaft that rotatably supports the roller is fixed to the intermediate support member. Compared with the case where a position changing operation mechanism that swings the intermediate support member along the rotation axis direction is provided between the holder and the holder, it is easy to make the roller device compact. Moreover, even if the position of the roller is changed along the direction of the axis of rotation, the orientation of the rolling surface of the roller does not change accordingly, and stable and smooth rolling performance is always maintained. You can

The characteristic structure of the roller device according to claim 2 of the present invention will be described with reference to the numbers used in the embodiments described later. The holder 7 is movable in the radial direction of rotation of the roller 6. In addition to being mounted on the casing 5, a retracting / adjusting means C for moving and adjusting the holder 7 in the retracting direction is provided between the casing 5 and the holder 7. According to the above characteristic structure, since the withdrawal / retraction adjusting means is provided between the casing and the holder, and the axial center position adjusting means is provided between the holder and the rotation center portion of the roller, the withdrawal / retraction operation is performed. It becomes difficult to be restricted by the arrangement configuration of the adjusting means C and the shaft center position adjusting means, and it is easy to simplify and downsize the roller device having the roller withdrawal adjusting function and the shaft center position adjusting function.

The characteristic structure of the roller device according to claim 3 of the present invention will be described with reference to the numbers used in the embodiments described later.
A cylindrical shaft 15 which can be inserted into and removed from the center through hole 6a of the roller 6 in the direction of the rotation axis X1, an inner peripheral surface of the central through hole 6a of the roller 6 and an outer peripheral surface of the cylindrical shaft 15 inserted therein. A receiving shaft 16 which is insertable and removable from the direction of the rotation axis X1 is provided between, and when the cylindrical shaft 15 moves outward in the radial direction of rotation as the receiving shaft 16 is inserted, A movement restricting portion 15A for restricting relative movement of the roller 6 and the cylindrical shaft 15 in the direction of the rotation axis X1 is provided. Further, the receiving shaft 16 is fixed to the mounting hole 7c of the holder 7 with respect to the rotation axis core. The point is that they are fitted and held so as to be freely inserted and removed from the X1 direction. According to the above characteristic configuration, when the roller device is assembled, first, the cylindrical shaft is inserted into the center through hole of the roller from the direction of the rotation axis, and then the center through hole of the roller is aligned with the mounting hole of the holder. Then, it suffices to insert the receiving shaft from the direction of the rotation axis between the inner peripheral surface of the center through hole of the roller and the outer peripheral surface of the cylindrical shaft inserted therein through the mounting hole of the holder. Therefore, the assembling work and the disassembling work of the roller device can be performed efficiently and easily, and the receiving shaft and the cylindrical shaft can be assembled in the center through hole of the roller in a concentric state or a state close thereto. Therefore, it is possible to promote the compactness of the roller support means.

A characteristic structure of a roller device according to claim 4 of the present invention will be described with reference to the numbers used in the embodiments described later. The receiving shaft 16 has a transverse cross section which is elastically deformable in the radial direction. It has a substantially C-shape and is fitted in a reduced diameter state with respect to a mounting hole 7c formed in the side wall 7A of the holder 7. According to the characteristic configuration, the receiving shaft can be frictionally held in the mounting hole of the holder by utilizing the elastic restoring force of the receiving shaft toward the expanded diameter side. Therefore, a member for fixing the receiving shaft to the holder side is not required, which can facilitate the simplification of the structure and the reduction of the manufacturing cost.

The characteristic construction of the roller device according to claim 5 of the present invention will be described with reference to the numbers used in the embodiments described later. The shaft center position adjusting means B is formed on the cylindrical shaft 15. The screw member 1 screwed to the screw portion 17 through the screw portion 17 and the mounting hole 7c of the holder 7.
8, a first rotation restricting portion 19 that restricts relative rotation between the receiving shaft 16 and the cylindrical shaft 15, and the receiving shaft 16 and the holder 7.
And a second rotation restricting portion 20 that restricts relative rotation with respect to. According to the above-mentioned characteristic configuration, when the screw member is rotationally operated, the cylinder shaft moves in the rotation shaft core direction with respect to the receiving shaft held by the holder, and the roller is integrated through the movement restricting portion of the cylinder shaft. Be moved to. Further, since the screw member is screwed into the threaded portion of the cylinder shaft through the mounting hole of the holder, it is not necessary to separately secure a special space for disposing the screw member. And the cylinder shaft can be directly linked. Therefore, it is possible to promote simplification of the structure of the shaft center position adjusting means and reduction of manufacturing cost.

The characteristic structure of the roller device according to claim 6 of the present invention will be described with reference to the numbers used in the embodiments described later. The cross-sectional shape of the receiving shaft 16 is approximately C.
The first rotation restricting portion 19 is formed in a V shape, and the first rotation restricting portion 19 includes a movement restricting portion 15A of the cylindrical shaft 15 and a receiving shaft 16.
And the open end faces 16a on both sides in the circumferential direction. According to the characteristic configuration, the relative rotation between the receiving shaft and the cylindrical shaft can be restricted by the contact between the movement restricting portion of the cylindrical shaft and the opening end surface of the receiving shaft in the circumferential direction.
A special member for restricting the relative rotation is unnecessary, which can facilitate the simplification of the structure and the reduction of the manufacturing cost.

The characteristic configuration of the roller device according to claim 7 of the present invention will be described with reference to the numbers used in the embodiments described later. The head part 18a of the screw member 18 is moved in and out of the casing 5. Groove 5i that enters from the moving direction
And the head portion 18a of the screw member 18 that has entered the groove portion 5i
Is formed with an operation opening 5j for rotationally operating the. According to the above characteristic configuration, the head of the screw member enters the groove formed in the casing as the holder is moved into the casing by the protrusion / retreat adjusting means, and the head portion of the screw member moves in the direction of the axis of rotation of the screw member. Since movement of the screw member is restricted, a special member and an assembling operation for holding the screw member rotatably only become unnecessary.

The characteristic structure of the roller device according to claim 8 of the present invention will be described with reference to the numbers used in the embodiments described later. The center through hole 6a of the roller 6 is the center of rotation of the roller 6. Inner ring 21 of the bearing 21 held in the section
It is configured with A. According to the above characteristic configuration, even when an error occurs in the mounting position of the holder or when the mounting condition is changed due to use such as warpage, it is quick and easy without changing the holder one by one as in the conventional case. The roller can be smoothly rolled while being able to deal with the above.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] FIGS. 1 to 8 show a roller type device of the present invention, which is of a sliding type in which a roller device of the present invention is opened and closed along a synthetic resin rail 2 which is attached in a fixed state to a fixed portion 1 such as a sill. The case where the sliding door 3 is equipped is shown, and the mounting portion 4 to the sliding door 3 is shown.
A synthetic resin casing 5 provided with a synthetic resin roller 6 and a first horizontal axis (hereinafter referred to as a rotary axis) X1
A holder 7 made of synthetic resin that is rotatably supported around
The roller 6 is assembled so as to be able to move in and out along the vertical direction which is also the radial direction of rotation of the roller 6, and the roller 6 is relatively rotatable between the holder 7 and the center of rotation of the roller 6, and Roller support means A for movably supporting the rotation axis X1 direction and shaft center position adjusting means B for moving and adjusting the roller 6 in the rotation axis X1 direction are provided, and further, the casing 5 and the holder 7 In between, the holder 7
There is provided withdrawal adjusting means C for moving and adjusting the withdrawal direction. The travel guide surface 2a of the rail 2 is formed in a V-shape or a substantially V-shape in a transverse sectional view (longitudinal view), and among the rolling surfaces of the roller 6, the direction of the rotation axis X1. Each of the rolling surface portions 6d located on both sides of the is configured as an inclined surface that is parallel or substantially parallel to the inclination direction of the running guide surface 2a that is the driven surface thereof.

The casing 5 has a casing main body 5A which is mounted from the rear surface side to an arcuate recess 3a formed in the lower portion of the sliding door 3 and a mounting plate portion 5B which is partially in contact with the rear surface 3b side of the sliding door 3. And a cover body 5C that rotatably supports a shaft portion 11a of a first bevel gear 11 of a protrusion adjusting mechanism C described later between the casing body 5A and the casing body 5A. The casing body 5A and the mounting plate portion 5B are integrally formed. The casing body 5A includes an elevating guide surface 5a for guiding each of the left and right side surfaces 7a of the holder 7 along the vertical direction, and a pair of front and rear ridges 7b formed on each of the left and right side surfaces 7a of the holder 7. An anti-vibration restricting surface 5b that engages and prevents the holder 7 from moving in the front-rear direction (rotational axis X1 direction).
A semicircular bearing recess 5d for rotatably supporting the shaft portion 11a of the first bevel gear 11, and a locking hole 5f with which the pair of locking claws 5e of the cover body 5C are engaged. Has been formed. Further, the cover body 5C is formed with a semicircular bearing recess 5g for rotatably supporting the shaft portion 11a of the first bevel gear 11. Further, the mounting portion 4 is constituted by mounting holes for the screws 13 which are formed at four places of the mounting plate portion 5B.

The protruding / retracting adjusting means C has a screw shaft 10 which is integrally formed so as to project from the upper surface of the holder 7 and which is vertically oriented, a first bevel gear 11 which is screwed to the screw shaft 10, and the screw shaft 10. The second bevel gear 12 is rotatable around a second horizontal axis X2 that meshes with the first bevel gear 11. The shaft portion 11a of the first bevel gear 11 has the casing body 5
It is rotatably supported between the bearing recess 5d of A and the bearing recess 5g of the cover body 5C, and in the supported state, the back surface (upper surface) of the tooth portion 11b of the first bevel gear 11 is the cover body 5C. It is configured to contact the lower surface in a relatively rotatable state. Shaft portion 12a of the second bevel gear 12
Is rotatably supported in the through hole 5h formed in the mounting plate portion 5B, and in the supported state, the first
The rear surface of the tooth portion 12b of the bevel gear 12 is configured to come into contact with the inner surface of the mounting plate portion 5B in a relatively rotatable state, and further, the tip surface of the shaft portion 12a of the second bevel gear 12 is 2 An operation groove 12c for rotating the bevel gear 12 with a tool such as a driver is formed. And FIG.
As shown in (a) and (b), when the second bevel gear 12 is rotationally operated, the first bevel gear 12 meshing with the second bevel gear 12 rotates around the vertical axis, and further the holder 7 is rotated with this rotation. The screw shaft 10 is screwed up and down, and the roller 6 moves up and down integrally with the holder 7. That is, the height position of the roller 6 with respect to the casing 5 is changed.

The roller support means A includes a cylindrical shaft 15 made of synthetic resin or metal that can be inserted into and removed from the center through hole 6a of the roller 6 in the direction of the rotation axis X1, and the center through hole 6a of the roller 6. A receiving shaft 16 made of stainless steel is inserted between the inner peripheral surface and the outer peripheral surface of the cylindrical shaft 15 inserted into the rotating shaft core X1. The roller 6
A circular engagement recess 6b having a diameter larger than that of the central through hole 6a is formed on each of both sides of the central through hole 6a in the axial direction, and at both ends of the cylindrical shaft 15 in the axial direction, And,
The cylindrical shaft 15 is moved outward (upward) in the radial direction of rotation along with the insertion of the receiving shaft 16 in each of the portions spaced apart from the engaging recesses 6b by a distance slightly larger than the axial center distance. At this time, a protrusion-like movement restricting portion 15A which is engaged with both the engaging recesses 6b and restricts the relative movement of the cylindrical shaft 15 and the roller 6 in the direction of the rotation axis X1 is formed integrally. Further, in the holder 7, both ends of the receiving shaft 16 can be inserted into and removed from the rotation axis X1 direction with respect to the mounting holes 7c formed through a pair of side walls 7A facing each other in the rotation axis X1 direction. It is fitted and held in.

Further, as shown in FIGS. 7 and 8B, the both movement restricting portions 15 of the outer peripheral surface of the cylindrical shaft 15 are provided.
A central through hole 6 of the roller 6 is provided at a portion located between A.
When the receiving shaft 16 is inserted between the inner peripheral surface of a and the outer peripheral surface of the cylindrical shaft 15 inserted therein, a slide contact guide projection 15B which is in sliding contact with or close to the inner peripheral surface of the center through hole 6a. Are integrally formed in a raised state. Of the cylinder shaft 15,
The maximum outer diameter on the line segment connecting the circumferential center position of the arcuate tip surface of the movement restricting portion 15A and the rotation axis X1 is slightly smaller than the inner diameter of the center through hole 6a of the roller 6. In addition, the axial length of the cylindrical shaft 15 and the rotational shaft width of the roller 6 are the same or substantially the same. The receiving shaft 16 is formed in a substantially C-shape in a transverse sectional view (longitudinal view) capable of being elastically deformed in a diameter reducing direction, and has a diameter reduced with respect to a mounting hole 7c formed in a side wall 7A of the holder 7. It is fitted and held in the state. That is, the receiving shaft 16 is frictionally held in the mounting hole 7c of the holder 7 by utilizing the elastic restoring force of the receiving shaft 16 toward the expanded diameter side.

The shaft center position adjusting means B is used for the cylinder shaft 15.
The female screw portion 17 formed on the inner peripheral surface of the, the screw member 18 screwed into the female screw portion 17 through the mounting hole 7c of the holder 7, and the relative rotation of the receiving shaft 16 and the cylindrical shaft 15 are restricted. First rotation restricting portion 19 and the receiving shaft 16
Rotation restricting portion 2 that restricts relative rotation between the holder and the holder 7
And the head portion 18a of the screw member 18 in the mounting plate portion 5B of the casing 5.
In a portion corresponding to the above, the groove portion 5i that allows the screw member 18 to be engaged from below the head portion 18a and the head portion 18a of the screw member 18 that is engaged in the groove portion 5i from the outer side in the rotation axis X1 direction. A substantially downward U-shaped operation opening 5j for rotating operation is formed. Further, when the head portion 18a of the screw member 18 is engaged with the groove portion 5i, the movement of the screw member 18 in the direction of the rotation axis X1 is restricted. Further, the head portion 18a of the screw member 18 is formed with an operation groove 18b for rotating the screw member 18 with a tool such as a screwdriver, and the vertical opening width of the operation opening 5j is The head portion 18a of the screw member 18 is configured to have a length that allows the head portion 18a of the screw member 18 to be rotated over the entire range of elevation adjustment by the protrusion / retreat adjusting means C.

The first rotation restricting portion 19 is shown in FIG.
As shown in FIG. 5, each of the movement restricting portions 15A of the cylinder shaft 15 and the root portions of the sliding contact guide protrusions 15B and both circumferential end faces 16a of the receiving shaft 16 are formed. That is, the width of each root portion of the both movement restricting portions 15A and the sliding contact guide protrusions 15B is configured to be slightly smaller than the opening width between the both opening end surfaces 16a of the receiving shaft 16, so that the receiving shaft 16 Relative rotation of the cylindrical shaft 15 that has entered around the rotation axis X1 is prevented by abutting between the root portions of both the movement restricting portions 15A and the sliding contact guide protrusions 15B and the opening end surface 16a of the receiving shaft 16. Is configured. The second rotation restricting portion 20 is shown in FIG. 7 and FIG.
As shown in, the upper side surface portion of the inner peripheral surface of the mounting hole 7c of the holder 7 facing the both opening end surfaces 16a of the receiving shaft 16 is approximately V in a state of being close to the both opening end surfaces 16a. It is configured by protruding in a letter shape. That is, the V-shaped upper side surface portion of the mounting hole 7c and both opening end surfaces 16a of the receiving shaft 16 constitute the second rotation restricting portion 20.

Next, a method of assembling the roller device constructed as described above will be described. After inserting the cylinder shaft 15 into the center through hole 6a of the roller 6 from the direction of the rotation axis X1, the roller 6 into which the cylinder shaft 15 is inserted is inserted into the holder 7 from below. Then, with the cylindrical shaft 15 and the mounting hole 7c formed in the side wall 7A of the holder 7 aligned, the roller 6 is passed through one mounting hole 7c.
Inner peripheral surface of the center through hole 6a of the cylinder and the cylindrical shaft 15 inserted therein
The receiving shaft 16 is inserted between the outer peripheral surface and the outer peripheral surface in the direction of the rotation axis X1. At the time of this insertion, the receiving shaft 16 is inserted with a slightly reduced diameter against the elastic restoring force, and when the insertion is completed,
The receiving shaft 16 is frictionally held in the mounting hole 7c of the holder 7 by utilizing the elastic restoring force of the receiving shaft 16 toward the expanded diameter side. When the insertion of the receiving shaft 16 is completed, the one mounting hole 7c
The screw member 18 is inserted from above, and the male screw portion of the screw member 18 is screwed into the female screw portion 17 of the cylindrical shaft 15.

Next, the mounting plate portion 5B of the casing 5
After inserting the shaft portion 12a of the second bevel gear 12 into the through hole 5h, the bearing recess 5d of the casing body 5A is
Shaft portion 11 of first bevel gear 11 meshed with second bevel gear 12
With the a being abutted, the pair of locking claws 5e of the cover body 5C are engaged with the locking holes 5f of the casing body 5A by force fitting, and the bearing recess 5d of the casing body 5A.
And the bearing recess 5g of the cover body 5C between the first bevel gear 1
The first shaft portion 11a is rotatably supported. Then, the holder 7 is inserted along the elevating guide surface 5a and the anti-vibration restricting surface 5b of the casing body 5A, and the tip of the screw shaft 10 of the holder 7 is a female screw formed on the inner peripheral surface of the first bevel gear 11. When the second bevel gear 12 is brought into contact with the portion, the second bevel gear 12 is rotated to screw the screw shaft 10 of the holder 7 and the female screw portion of the first bevel gear 11 into each other. With the upward movement of the holder 7 due to this screwing, the head portion 18a of the screw member 18 is engaged with the groove portion 5i of the mounting plate portion 5B, and the movement of the screw member 18 in the direction of the rotation axis X1 is restricted. To be done.

When the sliding type sliding door 3 is warped and the sliding doors 3 come into contact with each other,
The screw member 1 is passed through the operation opening 5j of the casing 5.
When 8 is rotated, as shown in FIGS. 2A to 2C, the cylindrical shaft 15 and the roller 6 are slidably contacted with the receiving shaft 16 fitted and held in the holder 7 in the direction of the rotation axis X1. Although it will move, both inclined rolling surface portions 6d of the roller 6 under the load of the sliding door 3 are in contact with the V-shaped running guide surface 2a of the rail 2, so On the other hand, the sliding door 3 moves in the direction of the rotation axis X1. By the movement of the sliding door 3 in the direction of the rotation axis X1, contact between the sliding doors 3 is avoided.

[Second Embodiment] In the first embodiment, the cylindrical shaft 15 and the receiving shaft 16 are directly inserted into the inner peripheral surface of the center through hole 6a of the roller 6 formed of synthetic resin. However, as shown in FIG. 9, a rolling bearing 21 is provided at the center of rotation of the roller 6, and the inner ring 2 of the rolling bearing 21 is provided.
The center through hole 6a may be formed by the inner peripheral surface of 1A. That is, the cylindrical shaft 15 and the receiving shaft 16 may be inserted from the rotation axis X1 into the inner peripheral surface of the inner ring 21A of the bearing 21. The other configurations are the same as those of the above-described first embodiment, and the portions having the same configurations are denoted by the same reference numerals and the description thereof will be omitted.

[Third Embodiment] In the roller device shown in FIG. 10, the holder 7 is divided into two divided holder portions 7B and 7C at a central position in the direction of the rotation axis X1 of the roller 6,
Recesses 6A, 6 formed at the center of rotation of the roller 6 are formed on the inner surfaces of the divided holders 7B, 7C that face each other.
Cylindrical bodies 22A and 22B that are relatively rotatable in the direction of the rotation axis X1 and are movably fitted within the fixed range of the direction of the rotation axis X1 are integrally formed in B.
The roller support means A is constituted by A and 22B. In order to configure the shaft center position adjusting means B for moving and adjusting the roller 6 in the direction of the rotary shaft X1, the rotary shaft core X is formed in the central through hole 6d of the roller 6 in one of the divided holder portions 7B.
A screw member 23 that is rotatably penetrated from one direction is screwed into the male screw portion of the screw member 23 and a lock nut 24
Is screwed, and at the tip of the screw member 23,
The retainer plate 25 for preventing the roller 6 from coming off and holding it between the screw member 23 and the flange portion 23a integrally formed with the screw member 23 is retained by the retaining pin 2
It is attached at 6. Incidentally, although not shown, the holder 7 is provided with a screw shaft 10 which constitutes the retracting / adjusting means C as in the first and second embodiments.

[Other Embodiments] The roller support means A is not limited to those described in the first and third embodiments, and the rotation center portions of the holder 7 and the roller 6 are not limited thereto. The above structure may be any structure that allows the roller 6 to be relatively rotatable and can be moved in the direction of the rotation axis X1 between and. The shaft center position adjusting means B is not limited to the screw type one described in each of the above embodiments,
For example, a cam type or push-pull type position adjusting structure may be used. In short, as the shaft center position adjusting means B,
Any structure may be used as long as it can adjust the movement of the roller 6 along the direction of the rotation axis X1. In the above-described first to third embodiments, the holder 7
Was attached to a casing 5 provided with a mounting portion 4 for the sliding door 3 so as to be movable back and forth. However, the casing 5, the retractable adjusting means C are omitted, and the holder 7, the roller 6, and the roller bearing means A are omitted. Alternatively, the shaft center position adjusting means B may be combined. In this case, the holder 7 is provided with the mounting portion 4 for the mounting surface of the sliding door 3 or the like. The advance / retreat adjusting means C is not limited to the structure using the two bevel gears 11 and 12 described in the above-described first to third embodiments, but is a holder for the casing 5. Any structure can be used as long as it can adjust the movement of 7 in the direction of movement. In the above-described first to third embodiments, the roller device of the present invention is opened and closed along the rail 2 mounted in the fixed portion 1 such as a sill in a buried state or the running guide groove formed in the fixed portion 1. The case where the roller device of the present invention is mounted on the sliding door 3 of the sliding type has been described. it can.

In the means for solving the above-mentioned problems, reference numerals are given for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional view showing a first embodiment of a roller device of the present invention.

2 (a), (b), and (c) are vertical sectional views of the whole showing a roller height adjustment state and a shaft center position adjustment state.

FIG. 3 is an enlarged vertical sectional view of the whole.

FIG. 4 is an overall rear view.

FIG. 5 is an overall front view.

FIG. 6 is an enlarged horizontal sectional view of the whole.

FIG. 7 is an overall exploded perspective view

FIG. 8A is an enlarged cross-sectional view of the main part when the cylindrical shaft is inserted into the center through hole of the roller. FIG. 8B is an enlarged cross-sectional view of the main part when the receiving shaft is inserted from the state of FIG. Figure

FIG. 9 is a vertical cross-sectional view of a main part showing a second embodiment.

FIG. 10 is a vertical cross-sectional view of a main part showing a third embodiment.

[Explanation of symbols]

 A roller support means B shaft center position adjustment means C extension / retraction adjustment means 5 casing 5i groove portion 5j operation opening 6 roller 6a center through hole 7 holder 7A side wall 7c mounting hole 15 cylinder shaft 15A movement restriction means 16 receiving shaft 16a opening end surface 17 Screw part 18 Screw member 18a Head part 19 First rotation restricting part 20 Second rotation restricting part 21 Bearing 21A Inner ring

Claims (8)

[Claims] 1. A roller device in which a roller rotatably supports a roller that rolls along a rolling surface, wherein the roller is relatively rotated between the holder and the center of rotation of the roller. A roller device provided with a roller support means that freely supports and is movable in the direction of the rotation axis, and a shaft position adjusting means that adjusts the movement of the roller in the direction of the rotation axis. 2. The holder is attached to a casing so as to be able to move in and out in a radial direction of rotation of a roller, and a holder for adjusting movement of the holder in a moving direction between the casing and the holder. The roller device according to claim 1, further comprising retreat adjusting means. 3. The roller bearing means comprises a cylindrical shaft which can be inserted into and removed from the center through hole of the roller in the direction of the axis of rotation, and an inner peripheral surface of the center through hole of the roller and the cylindrical shaft. A receiving shaft that can be inserted into and removed from the rotation shaft core direction is provided between the cylindrical shaft and the outer peripheral surface of the cylindrical shaft, and the cylindrical shaft moves outward in the radial direction of rotation as the receiving shaft is inserted. At this time, a movement restricting portion that restricts relative movement of the roller and the cylindrical shaft in the direction of the rotation shaft core is provided, and further, the receiving shaft is
The roller device according to claim 1 or 2, wherein the roller device is fitted and held in a mounting hole of the holder so as to be freely inserted into and removed from the rotational axis direction. 4. The receiving shaft is configured to have a substantially C-shaped cross section that is elastically deformable in a diameter reducing direction, and is fitted in a mounting hole formed in a side wall of the holder in a diameter reduced state. The roller device according to claim 3, which is provided. 5. The shaft center position adjusting means includes a screw portion formed on the cylinder shaft, a screw member screwed into the screw portion through a mounting hole of the holder, and a relative position between the receiving shaft and the cylinder shaft. The roller device according to claim 3 or 4, comprising a first rotation restricting portion that restricts rotation, and a second rotation restricting portion that restricts relative rotation between the receiving shaft and the holder. 6. The cross-sectional shape of the receiving shaft is formed into a substantially C shape, and the first rotation restricting portion is provided with an opening end surface on both sides in the circumferential direction of the movement restricting portion of the cylindrical shaft and the receiving shaft. The roller device according to any one of claims 3 to 5, which is configured by: 7. The casing is formed with a groove portion into which a head portion of a screw member enters from the moving direction, and an operation opening for rotating the head portion of the screw member into the groove portion from the outside. The roller device according to claim 5 or 6, which is provided. 8. The roller device according to claim 3, wherein the center through hole of the roller is constituted by an inner ring of a bearing held at a rotation center portion of the roller.