JPH0210355Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration isolating support device for vibration generating equipment, and more particularly to a vibration isolating support device for a compressor or the like used in a refrigeration system or the like.

A conventional vibration-proof support device for a compressor, etc. of this type is disclosed in, for example, Japanese Utility Model Publication No. 54-24235.
As shown in FIGS. 1 and 2, the anti-vibration support device disclosed in the publication is interposed between a compressor 3 and a substrate 1 of a refrigeration device or the like in order to elastically support it. It was composed of a sleeve-shaped rubber cushion 2. This sleeve-shaped rubber cushion 2 has an outer circumferential groove 6 in its upper part that fits into a through hole 5 provided in a mounting leg 4 of a compressor 3, and extends downward from a large diameter part 7 and a small diameter part. 8 alternately to form a wavy shape.

In the rubber cushion 2 which is a conventional vibration-proof support device having such a structure, the vibrations generated in the compressor 3 are absorbed and blocked by the elastic deformation of the corrugated portion of the rubber cushion 2, thereby preventing transmission to the substrate 1.

By the way, the conventional rubber cushion 2 has a wavy structure having alternating large-diameter parts 7 and small-diameter parts 8 as described above. The mold is configured such that the mold is vertically split, and when pulling out the rubber cushion 2 from the inner mold, the small diameter portion 8 must pass through a portion corresponding to the large diameter portion of the inner mold, resulting in an excessive pulling force. It had disadvantages such as requiring Furthermore, when the rubber cushion 2 is pulled out, a large deformation occurs in the circumferential direction when the small diameter portion 8 passes through the portion corresponding to the large diameter portion of the inner mold, so product defects such as cracks in the rubber cushion 2 are likely to occur. It had extremely serious drawbacks.

Therefore, the present invention was made in order to eliminate the drawbacks of the conventional vibration isolating support devices as described above, and to provide a vibration isolating support device for vibration generating equipment that is easy to mold and has high reliability. For the purpose of providing.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the vibration isolation support device for vibration generating equipment (hereinafter simply referred to as vibration isolation support device) of the present invention will be described in more detail with reference to preferred embodiments shown in the accompanying drawings.

3 and 4 show a vibration isolation support device according to an embodiment of the present invention. In FIGS. 3 and 4 showing this embodiment, parts that are the same as or correspond to the peripheral structures of the conventional anti-vibration support device shown in FIGS. 1 and 2 are given the same reference numerals. The explanation will be omitted.

The vibration damping support device 10 of this embodiment is generally formed from a sleeve-shaped rubber cushion 11. The rubber cushion 11 has an outer circumferential groove 12 in its upper portion that fits into a through hole 5 of a mounting leg 4 fixed to the compressor 3. This rubber cushion 11
has a large diameter portion 13 formed with a larger outer diameter at the lower portion than at the upper portion where the outer circumferential groove 12 is formed.

That is, the rubber cushion 11 has a small diameter section 14 at the upper part from approximately the middle of its axial length, and a large diameter section 13 at the lower part. and,
As is clear from FIG. 4, the inner diameter of this rubber cushion 11 is such that the inner diameter of the upper part where the outer circumferential groove 12 is formed is the smallest, and the inner diameter of the rubber cushion 11 starts from a position slightly lower than the outer circumferential groove 12. Small diameter part 1
The inner diameter up to the vicinity of the lower end of 4 is larger than the inner diameter at the top, and the inner diameter at the large diameter portion 13 is further enlarged, so that the inner diameter is gradually increased in three steps from the top. Therefore, the small diameter portion 14
A load shear receiving portion 15 is provided at the connecting portion between the large diameter portion 13 and the large diameter portion 13.
will be formed. In other words, the load shear receiving portion 15 means that the connecting portion projecting inward in the radial direction of the rubber cushion 11 receives a load applied from above in the shearing direction.

Furthermore, the rubber cushion 11 has an integral axial flange portion 16 that is formed by extending the outer peripheral portion of the large diameter portion 13 upward. This axial flange portion 16 is formed with a length that starts from the aforementioned connecting portion and ends with an upper end separated by a distance l from the lower surface of the mounting leg 4 fitted in the outer circumferential groove 12, and its thickness is The distance is such that it is spaced from the outer surface of the small diameter portion 14.

According to the vibration isolating support device 10 using the rubber cushion 11 having such a configuration, normal vibrations generated by the operation of the compressor 3, for example, cause compressive deformation of the small diameter portion 14 and the large diameter portion 13, and the load shear receiving portion 15. absorption is effectively blocked by shear deformation (fifth
In area A) in the figure, the amount of deflection of the rubber cushion 11 increases in response to large vibrations that occur when transporting refrigeration equipment or when stopping a compressor, etc. The rubber cushion 11 forms a region B shown in FIG.
Since the spring constant (load F/deflection amount δ) becomes large, excessive deformation of the rubber cushion 11 is suppressed, and the rubber cushion 11 can function as a so-called stopper.

In addition, with the rubber cushion 11 having such a shape, when removing the rubber cushion from the mold during the molding operation, the inner mold is slid downward, and then the rubber cushion, which has already become hollow, is deformed inward from the outer mold. Since all you have to do is take it out while doing so, it can be an extremely simple operation. At this time, the rubber cushion is not subjected to excessive elongation deformation, so product defects such as cracks are not caused.

In the above embodiments, an example in which the vibration isolating support device is made of a rubber material has been described, but the material is not limited to the rubber material. Such a material can be formed by appropriately selecting a material that is deformable and flexible, such as foamed resin or synthetic resin, depending on the magnitude of vibration of the vibration generating device.

As explained above, according to the present invention, it is possible to effectively block normal vibrations, act as a stopper against large vibrations, and provide easy molding work and highly reliable vibration-generating equipment. A swing support device can be provided.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a compressor installed using a conventional anti-vibration support device, Fig. 2 is a sectional view showing a conventional anti-vibration support device, and Fig. 3 is an embodiment of the present invention. FIG. 4 is a sectional view of the vibration isolating support device according to an embodiment of the present invention shown in FIG. 3, and FIG. FIG. 2 is a graph showing the deflection characteristics of a rubber cushion, which is a vibration-proof support device according to an embodiment of the present invention, with respect to a load. 3...Compressor, 4...Mounting leg, 10...Vibration isolating support device, 11...Rubber cushion, 12...Outer circumferential groove, 13...Large diameter portion, 14...Small diameter portion, 15...
Load shear receiving part, 16... Axial flange part. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a device for providing anti-vibration support by attaching a sleeve-shaped cushion material to a mounting leg provided on a vibration generating device, the cushion material has a small diameter at an upper part supporting the mounting leg and a large diameter at a lower part, and the small diameter part A load shear receiving part is formed at the joint between the large diameter part and the large diameter part,
An axial flange having an outer diameter substantially the same as the large diameter portion and extending above the load shear receiving portion and on the outer periphery of the small diameter portion to a position spaced apart from the lower surface of the mounting leg. A vibration isolating support device for a vibration generating device, characterized in that a vibration isolating support device is formed with a section.