JP2000266115A - Vibration isolation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolation device to secure a vibration isolation function and excellent in a load withstanding property. SOLUTION: A rolling element 20 is made of a columnar roller on a vibration isolation device furnished with a vibration isolation device main body 1 provided between an upper part member 24 and a lower part member 16 and a plural number of the rolling elements 20 to make contact with at least a rolling surface 17a of one side of the upper part member 24 and the lower part member 16 free to roll and on which the upper part member 24 and the lower part member 16 are provided free to relatively move by rolling of the rolling elements 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel or a building having a heavy object such as a computer attached thereto.
The present invention relates to a vibration isolator that can be moved freely.

[0002]

2. Description of the Related Art Conventionally, a vibration isolator shown in FIG. 10 is known. The vibration isolator includes an outer housing 61 fixed to a lower surface of a floor plate 60, and a disk-shaped support member located in the outer housing 61 and integrally supported by the outer housing 61 and having a flat lower support surface. 63, and a number of small balls 65 circulated freely in a space 64 formed between the outer casing 61 and the support member 63. The lower small balls 65 roll on the base surface 67. It is made possible.

When an earthquake or the like occurs, the basic surface 67
Since the small ball 65 rolls and circulates in the space 64, the relative movement of the base surface 67 and the floor plate 60 in any direction is possible, and the movement of the base surface 67 is hardly transmitted to the floor plate 60. I have.

[0004]

However, in the above-mentioned conventional vibration isolator, since the floor plate 60 is stably supported by the circulation of the small balls 65, the surface pressure is increased and the load resistance is poor. there were.

[0005] The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a vibration-isolating device which secures a vibration-isolating function and has excellent load resistance.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the feature of the present invention is that the upper member 2 is provided.
Vibration isolation device main body 1 provided between 4 and lower member 16
And a plurality of rolling elements 20 which are in rolling contact with at least one of the rolling surfaces 17a, 26a of the upper member 24 and the lower member 16, and the upper member 24 and the lower In the vibration isolator in which the member 16 is provided so as to be relatively movable, the rolling element 20 is formed of a cylindrical roller.

The load applied to the upper member 24 acts on the lower member 16 via the vibration isolator. At this time, since the cylindrical roller 20 is in contact with the upper and lower members 16 and 24 and the vibration isolator main body 1, the contact area can be increased.

Further, the upper member 24 and the lower member 16
Are provided with upper and lower guide rails 15, 23, and
The upper and lower guide rails 15 and 23 are arranged in a cross shape, and the vibration isolator main body 1 is preferably provided movably along the upper and lower guide rails 15 and 23 via rollers 20.

In addition, at least one of the rolling surfaces 17 of the upper and lower guide rails 15, 23 on which the roller 20 rolls.
a and 26a are formed in an arc shape so as to restore the relative displacement between the upper member 24 and the lower member 16 to the original position.

It is preferable that a roller unit 18 that rotatably supports the roller 20 on a casing 19 is provided.

Preferably, the plurality of rollers 20 are provided on the respective guide rails 15 and 23. In such a case, by providing the roller 20 directly on the guide rail, the structure is simplified and the cost can be reduced.

Further, the roller 20 is connected to the upper member 2.
4 and the lower member 16 are arranged in an arc so as to restore the relative displacement to the original position. Accordingly, even if the upper member 24 and the lower member 16 are relatively displaced, the upper member 24 is moved relative to the upper member 24 and the lower member 16 so as to restore the vibration isolator main body 1 to the original position by the load of the upper member 24. Let it.

[0013]

1 to 7 show an embodiment of the present invention. Reference numeral 1 denotes a vibration isolator main body, and the vibration isolator main body 1 comprises:
It comprises a support body 3 and upper and lower support members 5a and 5b provided at upper and lower ends of the support body 3, respectively.

At the upper and lower ends of the support 3, a forked portion 7 is provided.
a, 7b are formed respectively, and the forked portions 7a, 7a,
The openings 8 of 7b are respectively set in concave grooves which are directed at right angles to each other.

Each of the forked portions 7a and 7b has the bearing member 5 attached thereto.
The bases 10a and 5b are fitted. The fork portions 7a, 7b and the base 10 of the support members 5a, 5b
The pivot shafts 12 are respectively inserted, and each of the support members 5
a and 5b are swingable with respect to the support body 3, respectively. Further, the directions of swinging of the two support members 5a and 5b are perpendicular to each other.

Reference numeral 15 denotes a lower guide rail fixed to a bottom surface (base surface) 16a of a room 16 of a building as a lower member.
On its upper surface, an arcuate concave guide groove 17 is formed. The arc-shaped bottom surface of the guide groove 17 is a rolling surface 17a.
And the center of the rolling surface 17a of the guide groove 17 is on the vertical center line O. In addition, lower guide rail 1
Reference numeral 5 indicates the same direction as the swing direction of the lower support member 5b.

Reference numeral 18 denotes a guide unit interposed between the guide rail 15 and the lower support member 5b. The guide unit 18 includes a casing 19, a plurality of columnar horizontal rollers 20, and a plurality of columnar rollers. And a vertical roller 21.

The casing 19 is movably accommodated in the guide groove 17 of the guide rail 15.
The horizontal roller 20 is rotatably mounted on the casing 19 so as to contact the rolling surface 17a of the guide groove 17 of the lower guide rail 15 and the lower surface (support surface) of the lower support member 5b. The horizontal rollers 20 are arranged in an arc so as to follow the shape of the rolling surface 17a of the guide groove 17.

The vertical rollers 21 are fitted into openings 19b formed in both side walls 19a of the casing 19, and are rotatably supported by the respective rollers. Both vertical rollers 21 roll on the side surfaces of the lower support member 5b. It has become. A stay 22 is fixed to the lower surface of the lower guide rail 15.
The lower guide rail 15 is fixed to the bottom surface 16 a of the room 16 via the stay 22.

Reference numeral 23 denotes an upper guide rail fixed to the lower surface of a floor plate 24 as an upper member.
The same as the lower guide rail 15 is adopted, and the guide groove 26 is directed downward. In addition, the center of the upper guide rail 23 is located on the vertical line O, and the upper guide rail 23 crosses the lower guide rail 15 in a cross shape in plan view.

The guide groove 2 of the upper guide rail 23
The roller unit 18 is also interposed between the upper support member 5a and the upper support member 5a. The upper roller unit 1
Numeral 8 is opposite to the lower roller unit 18 in the vertical direction.

As shown in FIG. 7, a plurality of vibration isolation devices A having the above-described configuration are provided at predetermined intervals with respect to the bottom surface 16a of the room 16, and a floor plate 24 on which a heavy object 30 such as a computer is installed. Is supported horizontally. This floor board 24
It is formed smaller than the size of the bottom surface 16 a of the room 16. That is, at the time of the earthquake, the floor plate 24 is
The floor plate 24 is formed to be smaller than the bottom surface 16a by, for example, 10 cm at each side so that the floor plate 24 can move relative to the horizontal direction.

In a normal state where the room 16 is stationary, the support body 3 and the upper and lower support members 5a and 5b are in a vertical state,
The center line coincides with the center line O of the upper and lower guide rails (see FIGS. 1 and 5).

When the room 16 shakes (vibrates) in the horizontal direction during an earthquake, the horizontal rollers 20 of the upper guide unit 18 are moved by the guide grooves 26 of the upper guide rail 23.
The upper bearing member 5a smoothly moves relative to the upper guide rail 23 in order to roll on the rolling surface 26a. In addition, since the horizontal roller 20 of the lower guide unit 18 rolls on the rolling surface 17a of the guide groove 17 of the lower guide rail 15, the lower bearing member 5b relatively smoothly moves the lower guide rail 15 (FIG. 6).

As a result, the floor board 24 can move in any direction with respect to the room 16. That is, even if the room 16 vibrates, the floor plate 24 can be kept stationary. Also,
Each of the vertical rollers 21 rotates when the room 16 and the floor plate 24 move relative to each other, thereby preventing the upper and lower support members 5a and 5b and the upper and lower guide rails 15 and 23 from rattling in both sides, thereby enabling smooth movement. The room 16 and the floorboard 24
During the relative movement, the roller unit 18 also moves with respect to the upper and lower support members 5a and 5b and the upper and lower guide rails 15 and 23.

As described above, the room 16 and the floor plate 24 move relative to each other, and the upper and lower support members 5a and 5b are positioned at one end of the upper and lower guide rails 15 and 23 (in the direction of increasing the thickness).
, The upper and lower support members 5a, 5b
Slightly oscillates. When the load on the floor plate 24 acts on each of the vibration isolation devices, the load tends to move the vertically inclined upper and lower support members 5a and 5b to the position of the original center line O (the upper and lower support members 5a and 5b Rolling surfaces 17a, 2
6a), the center of the vibration isolator main body 1 coincides with the center line O of the upper and lower guide rails again, and the vibration isolator A
Restores the vertical state.

Further, for example, when the floor plate 16 is supported by balls, the upper and lower guide rails 15 and 2 that come into contact with each ball are provided.
3 and the upper and lower support members 5a and 5b are applied with a large surface pressure.
4, the load can be dispersed by lowering the surface pressure by the horizontal roller 20.
There is an advantage that damage to the zero and upper and lower guide rails 15, 23 and the like can be suitably prevented, and a large load can be dealt with.

Further, since the horizontal roller 20 is configured to reciprocate while rolling between the vibration isolator main body 1 and the upper and lower guide rails 15 and 23, it is not necessary to circulate the horizontal roller 20 and the structure is simple. And the vibration isolation function is assured.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the roller unit 18 is interposed between the upper and lower support members 5a, 5b and the upper and lower guide rails 15, 23. However, the horizontal roller 20 may be supported by the upper and lower support members 5a and 5b and the upper and lower guide rails 15 and 23 may be rolled without providing the roller unit 18.

It is also possible to provide longitudinal rollers on both side surfaces of the upper and lower support members. In addition, it is not always necessary to provide the vertical rollers, and both sides of the upper and lower support members 5a, 5b slide smoothly on the inner peripheral surfaces of both side walls of the upper and lower guide rails 15, 23, as shown by oblique lines B in FIG. It is also possible to provide a sliding member having a small frictional force so as to be able to do so.

Further, as shown in FIGS. 8 and 9, a horizontal roller 20 may be provided directly on the upper and lower guide rails 15 and 23. That is, the lower guide rail 15 includes a pair of support plates 15a, 15a and both support plates 15a, 15a.
And a connecting member 15b interposed therebetween. A plurality of support shafts 30 are bridged between the two support plates 15a, 15a, and a hollow cylindrical horizontal roller 20 is rotatably fitted to each support shaft 30 via a bearing (not shown). . Further, the horizontal rollers 20 are arranged in an arc shape as in the above-described embodiment.

The upper guide rail 23 also includes a pair of support plates 2.
Each horizontal roller 20 is rotatably fitted to each support shaft 30 which is composed of 3a, 23a and a connecting member 23b, and is bridged between the support plates 23a, 23a.

Therefore, the vibration isolator A according to the present embodiment is used.
In a normal state in which the room 16 is stationary, the support body 3 and the upper and lower support members 5a and 5b are in a vertical state as shown by the execution line in FIG. 8, and the center line is the center line O of the upper and lower guide rails. Agree.

When the room 16 shakes (vibrates) in the horizontal direction during an earthquake, the lower bearing member 5b rolls on the horizontal roller 20 of the lower guide rail 15, so that the lower bearing member 5b is moved to the position shown in FIG. The lower guide rail 15 as shown by a virtual line
To move relatively smoothly. Also, the upper guide rail 23
The upper support member 5a rolls on the horizontal roller 20 of
The upper support member 5a smoothly moves the upper guide rail 23 relatively.

As a result, the floor board 24 can move in any direction with respect to the room 16, and the floor board 24 can be kept stationary even if the room 16 vibrates. Further, since the upper support member 5a and the lower support member 5b roll the respective horizontal rollers 20 arranged in an arc shape, the vibration isolator A is restored to the vertical state as in the above embodiment.

In the present embodiment shown in FIGS. 8 and 9, since the guide unit 18 is not provided unlike the above-described embodiment, there is an advantage that the structure is simplified and the cost is reduced.

[0037]

As described above, in the vibration isolator according to the present invention, since the rolling elements are constituted by the cylindrical rollers, it is possible to disperse the load applied to the upper member. In comparison with the above, there is an advantage that damage to the contact surface of each component can be suitably prevented, and a large load can be dealt with.

Further, at least one rolling surface of the upper and lower guide rails on which the rollers roll is formed in an arc shape so as to restore the relative displacement between the upper member and the lower member to the original position. In this case, the displacement of the upper member and the lower member in any direction can be automatically restored.

In addition, when the roller is provided with a roller unit rotatably supported by the casing, there is an advantage that assembly and maintenance of the vibration isolator are facilitated.

When the plurality of rollers are provided on the guide rail, there is an advantage that the structure is simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional front view showing an embodiment of the present invention, before a floorboard and a room relatively move.

FIG. 2 is a sectional side view showing a lower portion of the vibration isolator according to the embodiment of the present invention.

FIG. 3 is a sectional front view showing a lower portion of the vibration isolator.

FIG. 4 is a sectional front view showing the upper part of the vibration isolator according to the embodiment of the present invention.

FIG. 5 is a plan view before the floorboard and the room relatively move.

FIG. 6 is a plan view showing a state in which the floorboard and the room have relatively moved.

FIG. 7 shows a state in which a vibration isolator main body is attached to a floor plate,
(A) is a sectional front view, and (B) is a sectional plan view.

FIG. 8 is a sectional front view showing another embodiment of the present invention.

FIG. 9 is a sectional side view showing a lower portion of the vibration isolator.

FIG. 10 is a sectional front view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vibration isolator main body, 3 ... Bearing member, 15 ... Lower guide rail, 16 ... Room (lower member), 17a ... Rolling surface, 18 ...
Roller unit, 20: roller (rolling element), 23: upper guide rail, 24: upper member, 26a: rolling surface

Claims (6)

[Claims] An upper member (24) and a lower member (16).
And an upper member (2).
4) and a plurality of rolling elements (20) that are in rolling contact with rolling surfaces (17a) and (26a) on at least one side of the lower member (16), and the rolling elements (20) roll. Thus, in the vibration isolating device in which the upper member (24) and the lower member (16) are provided so as to be relatively movable, the rolling element (20) is formed of a cylindrical roller. 2. An upper member (24) and a lower member (1).
6), upper and lower guide rails (15) and (23) are provided, and the upper and lower guide rails (15) and (23) are arranged in a cross shape. 20) via upper and lower guide rails (15), (23)
The vibration isolation device according to claim 1, wherein the vibration isolation device is provided so as to be movable along. 3. The at least one rolling surface (17a) or (26a) of the upper and lower guide rails (15) and (23) on which the roller (20) rolls is formed by the upper member (24) and the lower member (26). The vibration isolation device according to claim 2, wherein the vibration isolation device is formed in an arc shape so as to restore the relative displacement of (16) to the original position. 4. The roller (20) is connected to a casing (1).
Roller unit (18) rotatably supported on 9)
The vibration isolator according to claim 1, further comprising: 5. The vertical guide rails (15), (2)
3. The vibration isolator according to claim 2, wherein a plurality of rollers are provided on each of the guide rails. 6. The roller (20) according to claim 5, wherein the rollers (20) are arranged in an arc so as to restore the relative displacement between the upper member (24) and the lower member (16) to the original position. Vibration isolator.