JPH0754675Y2 - Anti-vibration pedestal - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antivibration leg seat, and more particularly to an antivibration leg seat that is attached to, for example, the bottom surface of an electronic device to absorb vibration generated in the device.

[0002]

2. Description of the Related Art A conventional vibration-proof leg seat of this type is constructed as shown in FIGS. In FIGS. 4 to 6, 1 is the bottom surface of the electronic device, and 2 is the screw hole 1a of the electronic device bottom surface 1 which is fixed to the bottom surface 1a by screwing a screw 3 mounted through an insertion hole at the center portion. The leg seat body 4 shaped like a bowl is shaped like a frusto-conical body with its upper end fitted into a fitting recess formed by a projection 2a in the center of the inside of the leg seat body 2. Antivibration rubber 5 is a ring-shaped pedestal that is attached to the antivibration rubber 4 by adhesion or the like while positioning the lower end of the antivibration rubber 4 by an annular protrusion 5a, and 6 is formed on the lower surface of the pedestal 5. The protective members made of felt or the like arranged in the annular groove 5b are shown.

In the conventional anti-vibration pedestal, the pedestal 5 slightly projects from the lower surface of the pedestal body 2, and the protection member 6 also slightly projects from the annular groove 5b of the pedestal 5. As a result, when an electronic device having such a vibration-proof leg seat is installed on a floor surface or the like, the protection member 6 comes into contact with the floor surface, and the load of the electronic device is applied to the floor via the vibration-proof rubber 4. Supported by the plane.

[0004]

Since the conventional anti-vibration leg seat is constructed as described above, an appropriate anti-vibration effect can be obtained if the vibration characteristic (resonance point) of the device changes. I can't. That is, for example, when another device is placed on top of the electronic device, the vibration characteristic of the electronic device changes, and the vibration in this state cannot be absorbed by the conventional vibration-proof leg seat. Moreover, various vibrations reach the electronic device from the outside, that is, from the floor surface, but the conventional antivibration leg seat is insufficient to protect the electronic device from such various vibrations.

The object of the present invention is to solve the above-mentioned conventional problems, and it is possible to obtain an appropriate vibration-damping action even when the vibration characteristics of a device or the like are changed, and to obtain various external vibrations. An object is to provide a vibration-proof leg seat that can absorb vibrations and protect the device from vibrations.

[0006]

A vibration-proof footrest according to the present invention comprises a leg-base body attached to a bottom surface of an apparatus, a first vibration-proof elastic body having an upper end portion attached to the leg-base body, and A pedestal attached to the lower end of the first vibration-damping elastic body, a holding ring movably supported in the vertical direction with respect to the pedestal, and a holding ring carried by the holding ring and facing the pedestal of the holding ring. A second vibration-proof elastic body that comes into contact with or separates from the leg seat main body in accordance with the movement of the first vibration-damping body, and the first vibration-proof elastic body and the second vibration-proof elastic body respectively vibrate. It is characterized by different absorption characteristics.

[0007]

According to the anti-vibration pedestal of the present invention, for example, when other devices are stacked and placed on the upper part of the device, the vibration characteristics of the device change, and in such a case, the retaining ring is rotated to the pedestal. Then, the second vibration-proof elastic body is brought into contact with the leg seat body. As a result, the device is supported on the floor surface via the first vibration-damping elastic body and the second vibration-damping elastic body having a different vibration absorption characteristic from that of the first vibration-damping characteristic. The resonance point is kept low by the vibration isolating elastic body, and the vibration generated in the device is properly absorbed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The vibration-proof leg seat of the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings.

1 to 3 show a vibration-proof leg seat 10 according to an embodiment of the present invention. The vibration-proof leg seat 10 of this embodiment includes a leg-seat body 11 having a shape like a bowl which is bent like a conventional one, and the leg-seat body 11 has a central portion in a screw hole 1a formed in the bottom surface 1 of the device. It is fixed to the device bottom surface 1a by screwing the screw 3 mounted through the insertion hole.
A fitting concave portion 11b formed by a protrusion 11a is formed on the inner upper surface of the leg seat body 11, and a receiving surface 11c is formed concentrically on the outer side thereof by a protruding portion. The upper end portion of the vibration isolating rubber 12, which is a hollow frustoconical first vibration isolating elastic body, is fitted and positioned in the fitting recess 11b of the leg seat body 11, and the equipment bottom surface 1a of the leg seat body 11 is positioned. The flanged spacer 13 is inserted into the screw 3 at the time of fixing to and is screwed through the insertion hole of the leg seat body 11 so as to be locked and fixed to the flange portion of the flanged spacer 3.

The annular pedestal 14 is provided with a protrusion 14a on the outer peripheral edge portion on the upper surface thereof, and has an annular groove 14 on the lower surface thereof.
b is formed. The protrusion 14a on the upper surface of the pedestal 14 has a positioning function when the lower end portion of the anti-vibration rubber 12 is placed on the upper surface, and the lower end surface of the anti-vibration rubber 12 and the upper surface of the pedestal 14 are fixed by an adhesive. In this way, anti-vibration rubber 1
Lower surface annular groove 14b of the pedestal 14 attached to the lower end portion of 2
A protective member 15 made of a material such as felt and having a thickness such that it slightly protrudes from the groove is provided for preventing slippage and for preventing scratches.

The threaded portion 1 is provided on the outer peripheral surface of the annular pedestal 14.
4c is formed and is screwed with a screw portion 16a formed on the inner peripheral surface of the holding ring 16 concentrically arranged on the outside of the pedestal 14. A projection 16b is formed at the upper edge of the inner circumference of the holding ring 16 so as to project inward in the radial direction. The holding ring 16 is screwed onto the pedestal 14 so that its lower surface is at the same position as the lower surface of the pedestal 14. At this time, the protrusion 16b is locked to the protrusion 14a on the upper surface of the pedestal 14 to prevent the protrusion 16b from lowering below the pedestal 14. Further, a groove 16c is formed on the upper surface of the retaining ring 16.
A second anti-vibration elastic body 17 which is different in vibration absorption characteristics from the anti-vibration rubber 12 is arranged in the groove 16c, and is fixed by an adhesive or the like. .
Above the anti-vibration rubber 17, the receiving surface 11c formed on the leg seat body 11 is located. Therefore, when the holding ring 16 is rotated relative to the pedestal 14 and is raised, the anti-vibration rubber 17 is provided.
The upper surface of the abuts on the receiving surface 11c of the leg seat body 11.

In assembling the vibration-proof leg seat 10 as described above, as shown in FIG. 3, the upper surface groove 16c of the retaining ring 16 is formed.
The anti-vibration rubber 17 is attached to the bottom of the holding ring 16, and the anti-vibration rubber 12 having the spacers 13 is attached to the upper surface and the pedestal 14 fixed to the lower annular groove 14b of the protective member 15 is provided to the central portion from below. Insert and screw together to connect to each other. And
This assembly is placed in the leg body 11, and the screw 3 is passed through the center of the pedestal 14 and the spacer 1 at the upper end of the vibration proof rubber 12 is inserted.
3 and is screwed into the screw hole 1a of the equipment bottom surface 1 through the insertion hole of the leg seat body 11 to be assembled. Each component in this state is in the position as shown in FIG.

Normally, when the device is used alone by placing it on the bottom surface, the anti-vibration rubber 17 and the receiving surface 11c of the leg seat body 11 are kept separated as shown in FIG. Therefore, the load of the equipment is supported on the floor surface only through the vibration isolating rubber 12. The anti-vibration rubber 12 is preset so as to absorb the vibration unique to the device, and thus the vibration generated in the device is completely absorbed. This point is the same as the conventional anti-vibration leg seat.

When another device is used by being stacked on the device, the vibration characteristic of the device changes. Therefore, in such a case, the retaining ring 16 is attached to the pedestal 14
Rotate and raise the anti-vibration rubber 17 to the leg seat body 1
The first receiving surface 11c is brought into contact with the first receiving surface 11c. As a result, the load of the entire device is supported on the floor surface via the two types of anti-vibration rubbers 12 and 17, and the two types of anti-vibration rubbers 12 and 17 have different vibration absorption characteristics as described above. Therefore, the resonance point can be kept low. Thus, by rotating the retaining ring 16 to bring the anti-vibration rubber 17 into contact with or away from the receiving surface 11c of the leg seat body 11, it is possible to easily respond to changes in the vibration characteristics of the device. Proper anti-vibration effect can be obtained.

[0015]

As described above, according to the anti-vibration base of the present invention, one of the two anti-vibration elastic bodies having different vibration absorption characteristics can be moved relative to the pedestal, that is, the base. By mounting the device so that it can come into contact with or separate from the main body, it is possible to easily change the vibration absorption characteristics with respect to changes in the vibration characteristics of the device, and obtain appropriate vibration damping effects for the device.

[Brief description of drawings]

FIG. 1 is a sectional view showing a vibration-proof leg seat according to an embodiment of the present invention.

2 is a bottom view of the anti-vibration leg seat shown in FIG. 1. FIG.

3 is an exploded perspective view of the anti-vibration leg seat shown in FIG. 1. FIG.

FIG. 4 is a sectional view showing a conventional anti-vibration leg seat.

5 is a bottom view of the conventional anti-vibration leg seat shown in FIG. 4. FIG.

6 is an exploded perspective view of the conventional anti-vibration leg seat shown in FIG. 4. FIG.

[Explanation of symbols]

 1 Bottom of equipment 3 Screws 10 Anti-vibration pedestal 11 Leg base body 12 Anti-vibration rubber 14 Pedestal 16 Retaining ring 17 Anti-vibration rubber

Claims (1)

[Scope of utility model registration request] 1. A leg seat main body attached to the bottom of the device,
A first vibration-proof elastic body having an upper end attached to the leg seat body;
A pedestal attached to the lower end of the first vibration-proof elastic body;
A retaining ring movably supported in the vertical direction with respect to the pedestal,
A first vibration-damping elastic member, which includes a second vibration-damping elastic body that is carried by the holding ring and that abuts or separates from the leg seat main body as the holding ring moves relative to the pedestal. Body and the second
The anti-vibration base is characterized by different vibration absorption characteristics from the anti-vibration elastic body.