JPH10325262A - Sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of skewing phenomenon where a roller becomes a locked state, and to provide a sliding device capable of assuring smooth operation. SOLUTION: A sliding device 10 is so constituted that a group of rollers consisting of a plurality of rollers 16 arranging the rotational axial centers in parallel with each other are provided between bedrock 12 and sliding rock placed upward of the bedrock 12, and relative displacement is made to occur between the bedrock 12 and sliding rock by rolling of the rollers 16. In that case, the sliding device is so constituted that idle shafts 32 arranging the rotational axial centers in parallel with the rotational axial centers of the rollers 16 are provided between the rollers 16 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding device for smoothly moving a heavy object horizontally by using rolling friction caused by a roller.

[0002]

2. Description of the Related Art A vibration isolator for protecting a building from external vibrations such as earthquakes has been proposed, for example, in Japanese Patent Laid-Open No. 57-140453 (Int. Cl. E04B 1/36). The above-mentioned vibration isolation device uses a sliding device in which a cylindrical roller is interposed between a base and a sliding board that can move relative to each other in the horizontal direction. The base is provided on the foundation side, and the sliding board is provided on the building side. It is constituted by. In addition, in the case of an earthquake, the base and the sliding board are smoothly moved relative to each other by rolling friction due to the rolling of the rollers, so that the input vibration can be released by the sliding apparatus. Input or vibration can be prevented or significantly reduced.

[0003]

However, in such a conventional sliding device using rollers, a plurality of rollers are arranged in the direction of relative movement between the base and the sliding plate, and the sliding plate is placed on the plurality of rollers. Must be stably placed,
In order to support a large load such as a building, it is desirable to arrange as many rollers as possible to reduce the support load per roller. Therefore, the rollers are arranged close to each other, so that more rollers are arranged. By increasing the number of rollers in this way, it is possible to increase the stability of the mounted sliding board and increase the overall supporting load.

However, when the rollers are arranged close to each other, the rollers are likely to come into contact with each other.
If the rollers try to roll in contact with each other, at this point of contact, the trailing side of one roller and the leading side of the other roller come into contact with each other, and the rotational force in the opposite direction is generated between them. Therefore, the rollers in contact with each other are locked. Also,
As described above, since a large load acts on each roller, even if at least one of the rollers is displaced by some impact or is deformed like a bow, the rollers are locked.

[0005] The occurrence of the locked state of the roller as described above is generally referred to as skewing. When this skewing phenomenon occurs, excessive movement resistance is generated between the base of the sliding device and the sliding plate, resulting in a smooth movement. Relative movement cannot be secured. For this reason, in the vibration isolator using the above-described sliding device, there is a problem that vibration such as an earthquake is largely input to the building by skewing, and the vibration isolation function is significantly reduced.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a sliding device capable of preventing the occurrence of a skewing phenomenon in which a roller is locked, thereby ensuring smooth operation. I do.

[0007]

In order to achieve the above object, a sliding device according to a first aspect of the present invention comprises a base and a sliding board disposed above the base, the rotation axes of the base and a sliding board. In a sliding device in which a roller group consisting of a plurality of rollers having their centers arranged in parallel with each other is provided, and the rolling of these rollers causes relative movement between the base and the sliding board, each of the rollers is provided between the respective rollers. An idle shaft having a rotation axis parallel to the rotation axis of the roller is provided.

The sliding device according to a second aspect of the present invention provides the sliding device, wherein the plurality of rollers constituting the roller group are
A position regulating idle shaft is provided so as to abut against the roller located at both ends in the relative movement direction, and a peripheral edge of the roller group is surrounded by a frame. A pressure roller that supports the position-controlling idle shaft and that comes into contact with a side of the position-controlling idle shaft is provided on the frame.

Further, in the sliding device according to a third aspect of the present invention, a shaft supporting roller having the same diameter as the roller is provided coaxially and rotatably on each of the idle shaft and the position regulating idle shaft. A roller is disposed between the base and the slide board, and a rotation axis of the idle shaft and the position-controlling idle shaft and a rotation axis of the roller are held at the same height.

The operation of the sliding device according to the present invention having the above-described structure will be described below. In the first aspect, the rotation axis is set between each roller of a roller group provided between the base and the sliding board. Since the idle shaft arranged parallel to the rotation axis of the roller is provided, when the roller is rolled, the idle shaft receives the rotation on the trailing side from the roller located forward in the moving direction, that is, the upward rotation. On the other hand, the rotation on the leading side, that is, the downward rotation is input from the roller located rearward in the movement direction. Then, the rotation of the trailing-side roller and the rotation of the leading-side roller are rotated in the same direction on the idle shaft, so that these rollers located on both sides of the idle shaft smoothly without receiving any resistance force. Rotated. Therefore, all the rollers interposed between the base and the sliding board are smoothly rolled, and the base and the sliding board can be relatively moved without generating skewing.

According to a second aspect of the present invention, among the rollers constituting the roller group, a position regulating idle shaft is provided in contact with these rollers on both sides of the rollers located at both ends in the relative movement direction. By supporting the idle shaft and the position-controlling idle shaft on a frame surrounding the periphery of the roller group, the frame keeps the gap between the idle shaft and the position-controlling idle shaft constant, The groups can be rolled together. Also, since the frame body is provided with a pressing roller that abuts against the side of the position-controlling idle shaft, the position-controlling idle shaft is pressed from the side by the pressing roller, and is positioned at both ends of the roller group. The roller group can be prevented from protruding, so that the roller group can be rolled while being restrained in a state of being aligned as a whole. Therefore, even when the direction of the rollers is deviated or the rollers are deformed in a bow shape, the pressing force of the pressing rollers serves as a correcting force, and the parallelism of the rotation axis of each roller can be maintained. . This prevents the rollers from being locked, eliminates the occurrence of the skewing phenomenon, and allows the sliding device to operate smoothly.

According to a third aspect of the present invention, a shaft support roller coaxially and rotatably provided on each of the idle shaft and the position regulating idle shaft is formed to have the same diameter as the roller, and the shaft support roller is mounted on the base. And the sliding disk, and the rotation axes of the idle shaft and the position regulating idle shaft are held at the same height as the rotation axis of the roller. The roller can be rolled without vertical movement between the roller and the sliding disk, and the idle shaft and the position-controlling idle shaft and the roller can be brought into contact with each other with their rotation axes in the same horizontal plane. Therefore, it is possible to stably maintain the interval between the rollers located on both sides of the idle shaft, and to transmit the pressing force of the pressing roller from the position regulating idle shaft to the roller group and the idle shaft without loss. In addition, the roller group can be sufficiently constrained by a high constraining force to improve the rolling performance.

[0013]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 5 show an embodiment of the sliding device of the present invention, FIG. 1 is a plan view showing a state in which a sliding board is removed, FIG. 2 is a sectional view taken along line AA in FIG.
FIG. 3 is a sectional view taken along line BB in FIG. 1, FIG. 4 is an enlarged sectional view of the idle shaft and the position-controlling idle shaft, and FIG. 5 is an explanatory view schematically showing an operating state.

That is, as shown in FIGS. 1 to 3, the sliding device 10 according to the present embodiment basically includes a base 12 and a sliding board 14 disposed above the base 12, In a sliding device 10 in which a roller group 22 including a plurality of rollers 16 having rotation axes arranged in parallel with each other is provided, and the rolling of the rollers 16 causes relative movement between the base 12 and the sliding board 14, The idle shaft 32 whose rotation axis is arranged in parallel with the rotation axis of the roller 16 is provided between each of the rollers 16. Of the plurality of rollers 16 constituting the roller group 22, both ends in the relative movement direction , A position regulating idle shaft 34 is provided in contact with the roller 16 located on the side of the roller 16, and the periphery of the roller group 22 is surrounded by a frame 36.
The pressing roller 4 that supports the idle shaft 32 and the position-controlling idle shaft 34 on the frame 36 and abuts the frame 36 on the side of the position-controlling idle shaft 34.
4 and a shaft support roller 40 having the same diameter as the roller 16 is coaxially and rotatably provided on each of the idle shaft 32 and the position-controlling idle shaft 34, and the shaft support roller 40 is provided between the base 12 and the sliding plate 14. The rotation axis of the idle shaft 32 and the position-controlling idle shaft 34 and the rotation axis of the roller 16 are held at the same height.

More specifically, the vehicle includes a base 12 and a slide board 14 disposed above the base 12 and capable of relatively moving.
A plurality of rollers 16 forming a roller group 22 are interposed between the base 12 and the slide board 14 and are schematically configured. On the upper surface of the base 12 and the lower surface of the sliding board 14, sliding surfaces 18 and 20 formed of tempered glass are mounted in a region where the rollers 16 roll. The roller 16 is constituted by a plurality of cylindrical rollers arranged coaxially and coaxially arranged in a columnar shape as a whole. Each of the rollers 16 moves in a relative movement direction between the base 12 and the sliding board 14, that is, a sliding direction X (right and left in FIG. Direction) and arranged in two rows in a direction Y orthogonal to the sliding direction X.
Is configured.

A pair of guide walls 24, 24a are erected on both ends of the base 12 in a direction Y perpendicular to the sliding direction X, and the sliding board 14 is disposed between the guide walls 24, 24a. . On the inner surfaces of the guide walls 24, 24a, as shown in FIG. 2, a concave groove 26 having a semicircular cross section is formed continuously in the sliding direction X, while the guide walls 24, 24a of the sliding board 14 are formed.
A plurality of hemispherical concave portions 28 are formed at appropriate intervals on both sides opposed to. Then, the concave groove 26 and the concave portion 2
The sliding board 14 is movable in the sliding direction X by fitting the ball 30 so as to be able to roll between the sliding board 14 and the ball 30.
In addition, vertical displacement is prevented.

Here, an idle shaft 32 whose rotation axis is arranged in parallel with the rollers 16 is interposed between the rollers 16 arranged in multiple stages in the sliding direction X in the roller group 22. As shown in FIG. 4, the idle shaft 32 is configured by rotatably fitting a cylindrical body 32c to an outer periphery of a support shaft 32a via a bearing 32b.
The roller 16 is brought into contact with the outer periphery of the cylindrical body 32c rotatable with respect to the support shaft 32a.

In the roller group 22, a position regulating idle shaft 34 is brought into contact with the side of the roller 16 located at both ends in the sliding direction X. The position regulating idle shaft 34 is, like the idle shaft 32,
As shown in FIG. 4, it is composed of a support shaft 32a, a bearing 32b, and a cylindrical body 32c.

The periphery of the roller group 22 is surrounded by a rectangular frame 36. The frame 36 has a pair of pivot bars 38 on both sides 36a and 36b in a direction Y orthogonal to the sliding direction X.
A support shaft 38a of the idle shaft 32 and the position-controlling idle shaft 34 is supported by the support bars 38, 38a. A shaft support roller 40, which is coaxial and has the same diameter as the roller 16, is rotatably provided at a central portion of the idle shaft 32 and the position regulating idle shaft 34, which is a gap between the rollers 16 arranged in two rows. Can be Both ends of the position-controlling idle shaft 34 protrude from the support bars 38, 38a, and the shaft support roller 40 is rotatably provided coaxially with the protruding ends. The roller 16 is attached to the support bars 38, 38a.
Is mounted, and the rollers 16 arranged in two rows are rotatably connected to each other via the support 16a.

On the other hand, both sides 3 of the frame 36 in the sliding direction X
A plurality of sets of arms 42 are provided on each of 6c and 36d so as to protrude inward. Pressing rollers 44 abutting on the side of the position regulating idle shaft 34 are rotatably provided at the protruding end portions of these arms 42, respectively. Provided.

In the present embodiment, a sub-sliding device 10a similar to the sliding device 10 is provided above the sliding plate 14. That is, the auxiliary sliding device 10a
Are arranged such that the sliding direction thereof is a direction Y (vertical direction in FIG. 1) orthogonal to the sliding direction X of the sliding device 10. The sub-sliding device 10a is a sliding plate 1 of the sliding device 10.
4 as a base, a sub-sliding plate 50 is provided above the sub-sliding plate 4, and between the sliding plate 14 and the sub-sliding plate 50, a plurality of sub-rollers 52 whose rotation axis is orthogonal to the roller 16 are arranged in parallel. Be placed.

In the above-mentioned auxiliary sliding device 10a,
The sub-sliding plate 50 is a guide wall 5 erected from the sliding plate 14.
4 and 54a, and a sub-slider 5 between them.
A ball 56 for relative movement while preventing vertical displacement of 0 is arranged. Further, sliding surfaces 58 and 60 made of tempered glass are provided on the upper surface of the sliding disk 14 and the lower surface of the sub-sliding disk 50, and idle shafts and position-controlling idle shafts 62 (not shown) are provided.
In addition, a shaft support roller 64 and a pressing roller 66 are provided, and are configured in the same manner as the sliding device 10.

With the above configuration, the sliding device 1 of the present embodiment.
0, it is designed to be used as a vibration isolating device for a building, and the base 12 is installed on a foundation portion, and the upper side of the sub-sliding plate 50 of the sub-sliding device 10a disposed above the sliding device 10. The building pillar 68 is installed in the building. In this state, the foundation and the building column 68 are connected to each other via the sliding device 10 in the X direction.
The relative movement in the Y direction is allowed, and the relative movement in the Y direction is allowed via the sub vibration isolator 10a. As a result, the relative movement in any horizontal direction becomes possible.

The sliding device 10 includes a base 12 and a sliding board 1.
And the auxiliary sliding device 10a has a plurality of auxiliary rollers 52 between the sliding board 14 and the auxiliary sliding board 50.
The relative movement between the base 12 and the sliding board 14 and between the sliding board 14 and the sub-sliding board 50 are smoothly performed by the rolling friction due to the rolling of the roller 6 and the sub-roller 52.

Since the sliding device 10 has the idle shaft 32 interposed between the rollers 16 with its rotation axis parallel to the rotation axis of the rollers 16, as shown in FIG. When the shaft 32 is in contact with each roller 16,
Are rolled, the rotation of these rollers 16 is input to the idle shaft 32 and idle. At this time, the roller 16 located at the front in the movement direction is
, The rotation on the trailing side, that is, the upward rotation, is input, while the rotation on the leading side, that is, the downward rotation, is input from the roller 16 located rearward in the moving direction.

Then, the trailing roller 16
And the rotation of the roller 16 on the leading side are rotated in the same direction on the idle shaft 32.
These rollers 1 located on both sides of the idle shaft 32
6 is smoothly rotated without receiving any resistance.
Accordingly, all the rollers 16 interposed between the base 12 and the sliding board 14 are smoothly rolled, and the skewing phenomenon that the rollers 16 are in contact with each other and locked is prevented from occurring. can do.
Similarly, in the sub-sliding device 10a, the sub-roller 52
The occurrence of the skewing phenomenon between the two can be prevented.

The rollers 16 forming the roller group 22
Of these, the position-controlling idle shafts 34 abutting on the sides of the rollers 16 located at both ends in the sliding direction X are respectively attached to shaft support bars 38, 38a provided on a frame 36 surrounding the periphery of the roller group 22. Since the roller group 22 is supported, the roller group 22 can be rolled integrally while holding the idle shaft 32 and the position-controlling idle shaft 34 at a constant interval. The arm 4 is attached to the frame 36.
The pressing roller 44, which is rotatably provided via the roller 2, is brought into contact with the side of the position-controlling idle shaft 34. Therefore, when the position-controlling idle shaft 34 tries to protrude outside, the pressing is performed. The reaction force of the roller 44 acts to press these position-controlling idle shafts 34 inward.

For this reason, the protrusion of the position-controlling idle shaft 34 can be prevented by the pressing roller 44, so that the roller group 22 is entirely restrained by the position-controlling idle shafts 34 at both ends. Done,
The roller group 22 can be held in an aligned state. Therefore, even if the direction of the roller 16 is misaligned or the roller is going to be deformed in an arc, the pressing roller 4
The pressing force of No. 4 serves as a correcting force, and the parallelism of the rotation axis of each roller 16 can be maintained. Accordingly, the roller 16 is prevented from being locked, and the sliding device 10 can always be operated smoothly without the occurrence of the skewing phenomenon.

Further, a shaft support roller 40, which is coaxially and rotatably provided on each of the idle shaft 32 and the position regulating idle shaft 34,
6, and is disposed between the base 12 and the sliding board 14, and the rotation axes of the idle shaft 32 and the position-controlling idle shaft 34 are
Is set at the same height as the rotation axis of the shaft, the shaft support roller 40 can be rolled without moving up and down between the base 12 and the sliding board 14, and the idle shaft 32 and The position-controlling idle shaft 34 and the roller 16 can be brought into contact with each other with their respective rotation axes in the same horizontal plane, and the gap between the rollers 16 located on both sides of the idle shaft 32 can be stably maintained. The pressing force of the roller 44 can be transmitted without loss from the position-controlling idle shaft 34 to the roller 16 and the idle shaft 32. As a result, the roller group 22 is sufficiently restrained with a high restraining force to improve the rolling performance. Can be improved. This is the same for the sub-sliding device 10a.

Therefore, when vibration such as an earthquake is input, the sliding device 10 and the sub-sliding device 10a can relatively move the foundation and the building pillar 68 relatively in the X and Y directions. The building can be isolated from any horizontal vibration. By the way, the sliding device 1
0 and the above-mentioned sub-sliding device 10a are provided with sliding surfaces 18, 20, and 58, 6 on which the rollers 16 and the sub-rollers 52 roll.
Since 0 is formed of tempered glass, the surfaces of the sliding surfaces 18, 20 and 58, 60 can be maintained smoothly without being damaged by the rolling of the roller 16 and the auxiliary roller 52 formed of steel. it can. Even when the sliding device 10 and the sub-sliding device 10a are not operated for a long time, the sliding surfaces 18, 20, and 58, 60 made of tempered glass, the steel roller 16, and the sub-roller 52 are used. Can be prevented from sticking due to rusting.

In the present embodiment, the case where the sliding device 10 and the sub-sliding device 10a are combined to constitute a vibration isolator is shown as an example. However, the mechanism that requires a sliding function is not limited to the vibration isolating device. Of course, the sliding device 10 of the present invention can be used alone.

[0032]

As described above, in the sliding device according to the first aspect of the present invention, the rotation axis is set between the respective rollers of the roller group provided between the base and the sliding board. Since the idle shaft is provided in parallel with the rotation axis of the roller, all the rollers can be smoothly rotated without receiving any resistance due to idle rotation of the idle shaft. Therefore, all the rollers interposed between the base and the sliding board are smoothly rolled, and the base and the sliding board can be smoothly moved relative to each other without generating skewing.

In the sliding device according to a second aspect of the present invention, of the rollers constituting the roller group, the roller is positioned by being in contact with the side of the roller located at both ends in the relative movement direction. By providing a regulating idle shaft and supporting the idle shaft and the position regulating idle shaft on a frame surrounding the periphery of the roller group,
The roller group can be rolled integrally while the interval between the idle shaft and the position-controlling idle shaft is kept constant by the frame. Since the position-controlling idle shaft is pressed from the side by the pressing roller provided on the frame body, it is possible to prevent the rollers located at both ends of the roller group from protruding. The rollers can be rolled while being constrained in a state of being generally aligned. Therefore, even when the direction of the rollers is deviated or the rollers are deformed in an arc, the pressing force of the pressing rollers serves as a correcting force, and the parallelism of the rotation axes of the respective rollers can be maintained. In addition, the lock of the rollers is prevented, and the occurrence of the skewing phenomenon is eliminated, so that the sliding device can be operated smoothly.

Further, in the sliding device according to a third aspect of the present invention, a shaft supporting roller which is rotatably provided coaxially with the idle shaft and the position regulating idle shaft to have the same diameter as the roller. Then, the shaft support roller is disposed between the base and the slide board, and the rotation axes of the idle shaft and the position-controlling idle shaft are held at the same height as the rotation axis of the roller. Therefore, the shaft support roller can be rolled without moving up and down between the base and the sliding board, and the idle shafts and the position-controlling idle shafts and the rollers are aligned in the same horizontal plane. Can be contacted as Therefore, it is possible to stably maintain the interval between the rollers located on both sides of the idle shaft, and to transmit the pressing force of the pressing roller from the position regulating idle shaft to the roller group and the idle shaft without loss. In addition, various excellent effects can be obtained in that the roller group can be sufficiently constrained by a high constraining force and the rolling performance can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a sliding device according to an embodiment of the present invention with a sliding board removed.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is an enlarged sectional view of an idle shaft and a position-controlling idle shaft used in an embodiment of the sliding device of the present invention.

FIG. 5 is an explanatory view schematically showing an operation state of an embodiment of the sliding device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sliding device 12 Base 14 Sliding board 16 Roller 22 Roller group 32 Idle shaft 34 Position-controlling idle shaft 36 Frame 40 Shaft support roller 44 Press roller

Claims (3)

[Claims] A roller group consisting of a plurality of rollers having their rotation axes arranged in parallel with each other is provided between a base and a sliding board disposed above the base. In a sliding device for causing relative movement between a base and the sliding board, an idle shaft whose rotation axis is arranged in parallel with the rotation axis of the roller is provided between each of the rollers. And a sliding device. 2. A position regulating idle shaft is provided by abutting the rollers on both sides of the plurality of rollers constituting the roller group, the rollers being located at both ends in the relative movement direction, and the rollers are provided. Surrounding the periphery of the group with a frame, supporting the idle shaft and the position-controlling idle shaft on the frame, and providing the frame with a pressing roller that abuts against the side of the position-controlling idle shaft. The sliding device according to claim 1, wherein: 3. The coaxial and rotatable rotation of the idle shaft and the position-controlling idle shaft, respectively.
A shaft support roller having the same diameter as the roller is provided, and the shaft support roller is disposed between the base and the slide plate, and the rotation axes of the idle shaft and the position regulating idle shaft and the rotation axis of the roller are provided. 3. The sliding device according to claim 2, wherein and are held at the same height.