JPH07104761A - Cushion member for supporting compressor - Google Patents

Abstract

PURPOSE:To obviate the generation of a collapse in a barrel part and to maintain a vibrationproof effect as a whole by maintaining a relatively large thickness in the barrel part and reducing the thickness of only the base part. CONSTITUTION:This cushion member 10 for supporting a compressor has a hollow shape and is interposed between a compressor base and another compressor mounted on the compressor base. The cushion member consists of a supporting part 16 for supporting the compressor, the cylindrical barrel part 18 which is disposed successively below the supporting part 16 and bulges outward in the diametral direction and the small-diameter annular base part 20 which is disposed successively below the barrel part 18. The annular base part 20 is formed to have the thickness smaller than the thickness of the barrel part 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion member for supporting a compressor, and more particularly to a cushion member for supporting a compressor of a refrigerator.

[0002]

2 and 3 show a conventional cushion member 10 for supporting a compressor. The cushion member 10 supports the compressor 1 of the refrigerator via legs 2 provided at several places. The cushion member 10 is made of an elastic body such as rubber and has a hollow tubular shape as a whole. A flange 12 is provided on the top portion, and an instruction portion 16 which is a shoulder portion is provided below the flange 12 via a neck portion 14. Below the support portion 16, there is a tubular body portion 18 that bulges outward in the radial direction in an arcuate cross-section, and at the lower end of the body portion 18, an annular base portion 20 having a small diameter and extending vertically is provided. There is. The shaft portion of the bolt 3 having the flat plate portion 4 at the lower end is inserted into the compressor base 5 from below, and the flat plate portion 4 is spot-welded to the compressor base 5, so that the bolt 3 is erected and fixed. . The cushion member 10 is fitted to the bolt 3, and the cushion washer 7 is pushed into the constricted portion of the upper portion of the bolt 3 to prevent the cushion member 10 from being pulled out upward. As a result, the cushion member 10 is positioned. The tip 6 of the support leg 2 of the compressor 1 is bifurcated and fits into the constricted portion 14 of the cushion member 10. In this way, the load of the compressor 1 is supported by the support portion 16.

In the cushion member 10, the spring constant is reduced by properly adjusting the thickness of the cushion member 10 and by the curved shape of the body portion 18 to improve the vibration damping effect.

[0004]

However, the cushion member 10 has the thickness t ₁ of the body portion 18 and the base portion 20.
Have the same thickness t ₂ . If the wall thicknesses t ₁ and t ₂ are reduced to reduce the spring constant, a collapse phenomenon occurs in the body portion 18 due to the load of the compressor. Further, if the wall thicknesses t ₁ and t ₂ are increased in order to prevent such a crushing phenomenon, the spring constant does not become sufficiently small and the vibration damping effect becomes small.

In view of this point, the present invention intends to provide a cushion member which does not collapse due to a load and has a large vibration damping effect.

[0006]

A cushion member for supporting a compressor according to a first aspect of the present invention has a hollow shape and is interposed between a compressor base and a compressor mounted on the compressor base. For supporting a compressor, which includes a supporting portion for supporting, a tubular body portion that is continuously provided below the supporting portion and bulges outward in the radial direction, and a small-diameter annular base portion that is continuously provided below the body portion. In the cushion member, the thickness of the annular base portion is smaller than that of the body portion.

[0007]

[Operation] In the present invention, since the body portion has a relatively large wall thickness, the collapse phenomenon in the body portion can be avoided. Moreover, since the base portion has a small wall thickness, the overall spring constant can be reduced. The desired anti-vibration effect can be improved.

[0008]

FIG. 1 shows an embodiment of the present invention. This cushion member 10 has basically the same structure as the cushion member shown in FIG. The feature of the present invention in such a cushion member 10 is that the wall thickness t ₁ of the body portion 18 is relatively large and the wall thickness t ₂ of the annular base portion 20 is smaller than that.

One cushion member (thickness of the body portion is larger than that of the base portion) according to an embodiment of the present invention is made, while on the other hand, a comparative example (the body portion and the base portion have the same thickness or the body portion is formed). (Those with a smaller wall thickness) were manufactured, and the natural frequency of each was measured to evaluate the anti-vibration effect and the presence or absence of the collapse phenomenon. The results are shown in Table 1.

[0010]

[Table 1] As shown in Table 1, in Example 1, the body wall thickness t ₁
Is 3.5 mm and the wall thickness t _{2 of the} base is smaller than 2.5
mm, the natural frequency is 11.5 Hz,
The anti-vibration effect was good, and the crushing phenomenon did not occur.
In other words, the vibration damping effect is good because the thickness of the base is small,
Nonetheless, it is considered that the crush phenomenon in the body did not occur because the thickness of the body was as large as 3.5 mm.

On the other hand, in Comparative Example 1, the thickness of both the body and the base is 3.5 mm, which is the same as the thickness of the body in Example 1, but in this case, the body is Since the thickness of No. 1 was sufficiently thick as in the case of the embodiment, the crushing phenomenon did not occur, but the thickness of the base portion was larger than that of the embodiment, and the vibration damping effect was poor.

In Comparative Example 2, both the body and the base have a thickness of 3.0 mm. The anti-vibration effect was good, but some crushing phenomenon occurred.

Further, in Comparative Example 3, both the body portion and the base portion had a thickness of 2.5 mm, which is the same as the thickness of the base portion in the embodiment. As described above, since the entire thickness is the same as the thickness of the base portion in the example and is relatively small, the natural frequency is very small and the vibration damping effect is very good. However, the crushing phenomenon occurred because the whole wall thickness was relatively thin.

In Comparative Example 4, the thickness of the body was the same as that of the example, but the thickness of the base was larger than that of the body. Therefore, although the rigidity of the cushion member as a whole was extremely high and the vibration damping effect was poor, the crushing phenomenon did not occur.

As described above, in order to prevent the occurrence of the crushing phenomenon, the thickness t ₁ of the body is increased (Comparative Example 1,
4) The rigidity of the entire cushion member is increased, the spring constant is increased, the natural frequency is increased, and the vibration damping effect is poor. On the other hand, in the case where it is attempted to reduce the thickness of the entire cushion member to improve the vibration damping effect (Comparative Example 3), the rigidity is poor and the crushing phenomenon occurs. In the case where the entire thickness is in the middle (Comparative Example 2), the spring constant of the cushion member as a whole is relatively small and the vibration damping effect is good, but a slight crushing phenomenon occurs. Therefore, as in the first embodiment of the present invention, it is clear that by reducing only the wall thickness t ₁ of the body, it is possible to increase the rigidity of the body and prevent deterioration of the vibration isolation effect. Is.

[0016]

Since the thickness of the body is kept relatively large and only the thickness of the base is made small, the body is not crushed and the vibration damping effect as a whole can be maintained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a cushion member according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a conventional cushion member.

FIG. 3 is a vertical cross-sectional view showing a state in which a compressor of a refrigerator is supported by the cushion member in the previous figure.

[Explanation of symbols]

 10 ... Cushion member 16 ... Support 18 ... Body 20 ... Annular base

Claims (1)

[Claims] 1. A hollow structure, which is interposed between a compressor base and a compressor mounted on the compressor base, and has a support portion for supporting the compressor, and a support portion continuously provided below the support portion. In a cushion member for supporting a compressor, which includes a tubular body portion that bulges outward in the radial direction and a small-diameter annular base portion that is continuously provided below the body portion, the thickness of the annular base portion is set to the thickness of the body portion. A cushion member for supporting a compressor, which is smaller than that.