JPH07208544A - Supporting leg for vibrating body - Google Patents

Abstract

PURPOSE:To provide a supporting leg for a vibrating body which can surely absorb the vibration of the vibrating body and is prevented from being easily demounted from an installation part. CONSTITUTION:At the center part of a supporting leg 11 having an engagement groove 13 formed between an upper side cylindrical part 14 and a lower side leg part 15f, a hollow chamber is formed from the upper end part of the cylindrical part 14 tp the leg part 15, and on the inner wall of the hollow chamber part in contact with the leg part 15, a reinforcing rib for applying strength to the leg part 15 is installed. Accordingly, the supporting leg 11 is provided with the sufficient elasticity and has the strong structure for the deformation action, and the vibration of the vibrating body is surely absorbed, and the trouble of easily demounting from a housing is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting leg for a vibrating body, and more particularly to a supporting leg for a vibrating body which can completely absorb vibrations of the vibrating body while ensuring reliable attachment to the vibrating body. .

[0002]

2. Description of the Related Art Pumps, small motors, and the like vibrate due to the operation of themselves, and similarly vibrate the equipment to which they are attached or generate vibration noise. For this reason, the housing of a vibrator such as a pump is provided with a supporting leg designed to absorb or soften the vibration. As a conventional example of such a supporting leg, for example, FIGS. There is one shown in 5. The support leg 1 of the vibrating body is made of an elastic material such as rubber and is formed into a substantially columnar shape as a whole. A bottom plate portion 2a of a housing 2 of the vibrating body is provided on an outer peripheral portion of an intermediate portion in the vertical direction of the support foot 1.
The engaging groove 3 that engages with the
The upper side of the is a columnar portion 4 having a columnar structure, while the lower side of the locking groove 3 is a foot portion 5. The foot portion 5 has an inverted truncated cone structure in which the diameter gradually decreases from the position of the locking groove 3 to the lower end thereof, and the vibration transmitted from the housing 2 to the support foot 1 is damped. Further, a hole 6 extending vertically from the upper end of the columnar portion 4 to the foot 5 is formed in the center of the support foot 1, and by forming the hole 6, the entire support foot 1 is formed. The rigidity is weakened to some extent.

As shown in FIG. 5, a plurality of support legs 1 are provided with mounting holes 7 formed in the bottom plate portion 2a of the housing 2.
It is press-fitted into the housing 2 and fitted and fixed to the housing 2 by fitting the inner diameter edge of the mounting hole 7 into the locking groove 3. As a result, the motor and the pump are supported by the support foot 1 via the housing 2, and the vibration generated from these motors and the like is absorbed by the support foot 1.

[0004]

However, in the above-mentioned conventional supporting leg 1 of the vibrating body, the supporting leg 1 is made of an elastic material, and the hole 6 is formed in the central portion thereof to provide elasticity. Despite the small size, the degree of elasticity is still insufficient, so the vibration of the pump or the like is transmitted to the ground contact surface 8 of the table or the like through the support foot 1 and generates a low humming noise or the table. There is a risk of shaking other placed objects. To eliminate this, for example, if the diameter of the hole 6 formed in the support foot 1 is made larger and a large space is formed inside the support foot 1, the elasticity of the support foot 1 becomes even smaller and the pump is sufficiently pumped. It becomes possible to absorb vibrations such as. However, in this case, the foot portion 5 becomes too soft this time, and when a tensile force is applied to the support foot 1 relatively upward or downward with respect to the housing 2 in FIG. 5, the support foot 1 is easily deformed. As a result, a new problem occurs in that the vibrating body falls out of the mounting hole 7 and cannot serve as the supporting foot 1 of the vibrating body.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a support leg for a vibrating body that can reliably absorb the vibration of the vibrating body and that does not easily drop from the mounting portion. .

[0006]

In order to achieve the above-mentioned object, the present invention provides a tube having a locking groove formed between an upper tubular portion and a lower foot portion. A gist is that a hollow chamber is formed from the upper end of the shaped portion to the foot portion, and a reinforcing rib that gives strength to the foot portion is provided on the inner wall or the outer wall of the hollow chamber portion corresponding to the foot portion.

[0007]

According to the present invention, since the support foot has sufficient elasticity by the above-mentioned structure, the support foot can be easily fitted into the mounting hole provided in the housing by compressing the support foot in the radial direction, and further, the locking is performed. The inner diameter edge of the mounting hole can be fitted into the groove. Then, during the operation of the vibrating body, the small elasticity of the supporting leg surely absorbs the vibration. On the other hand, even if a tensile force is applied to the support foot relatively upward or downward with respect to the housing, since the reinforcing rib is provided on the side wall inside or outside the foot, the foot is easily radiused. The support foot will not come off from the mounting hole without compressive deformation in the direction.

[0008]

FIG. 1 is an exploded perspective view showing an embodiment in which a support leg for a vibrating body according to the present invention and a plurality of support legs are attached to a housing of an air pump which is a vibrating body, and FIG. FIG. 3 is a cross-sectional view showing an example of the structure of the support foot, and FIG. 3 is a main-portion cross-sectional view showing a state in which the support foot is attached to the housing. In this figure, reference numeral 11 indicates a support foot according to this embodiment, and 12 indicates a housing of an air pump to which the support foot 11 is attached. In this embodiment, four support feet 11 are attached to the housing 12. The support foot 11 is made of an elastic material such as rubber or synthetic resin,
The entire outer shape is formed into a substantially cylindrical shape. This support foot 1
A locking groove 13 is formed around the outer peripheral portion of the vertical middle portion of the support foot 11 so as to be recessed radially inward from the outer wall of the support foot 11. The locking portion 13 is engaged with the bottom plate portion 12a of the housing 12. To meet.

Looking at each part of the support foot 11, the upper side of the locking groove 13 is a cylindrical part 14 having a cylindrical structure,
The lower side of the locking groove 3 is a foot portion 15. Foot 15
It is formed in an inverted conical structure in which the diameter gradually decreases from the position of the locking groove 13 to the tip, and the tip is rounded so that the vibration transmitted from the housing 12 to the support leg 11 can be attenuated. In addition, a hollow chamber 16 is formed in the central portion of the support foot 11 by forming the inside from the upper end of the tubular portion 14 to the foot portion 15 by excavation or another method to form the hollow chamber 16. As a result, the rigidity of the entire support foot 11 is significantly weakened. Reinforcing ribs 20 that give strength to the 15 feet are formed on the inner wall of the hollow chamber 16 portion corresponding to the feet 15 of the support foot 11. In this embodiment, one reinforcing rib 20 is formed to extend horizontally along the inner wall of the hollow chamber 16, but a plurality of reinforcing ribs 20 may be provided, or a spiral shape may be provided. . Since the reinforcing ribs 20 are provided in this manner, the support foot 1
No. 1 has sufficient elasticity, but has a structure that is robust against deformation.

On the other hand, the housing 12 has a bottom plate portion 12
A mounting hole 17 for mounting the support foot 11 is formed at a predetermined portion of a. Further, in the vicinity of the mounting hole 17 on the upper surface of the bottom plate portion 12, a tubular support ring portion 18 is provided for holding the support foot 11 from the outside of the tubular portion 14.
In FIG. 3, reference numeral 19 represents a grounding surface of a table such as a table on which an air pump is installed.

The operation of this embodiment will be described below. The four support legs 11 having the above-described configuration are fitted into the mounting holes 17 formed in the bottom plate portion 12a of the housing 12 as shown in FIG. This fitting is performed by the support foot 11
Since it can be easily deformed by compressing inward in the radial direction, the mounting hole 17 provided in the housing 12
Can be fitted into the locking groove 13 and the mounting hole 17
This is done by fitting the inner diameter edges of the support legs 11 to the housing 12 for fixing.

During operation of the air pump, the support leg 11 firmly supports the housing 12, and its small elasticity ensures absorption of vibration. On the other hand, when a tensile force is applied to the support foot 11 relatively upward or downward with respect to the housing 12, the reinforcing rib 20 is provided on the inner side wall of the foot portion 15. Retains its original shape when mounted without being radially compressed. Therefore, the support foot 11 does not come off from the mounting hole 17.

In the above embodiment, the reinforcing rib 2 is used.
0 is provided on the inner wall of the foot 15 of the support 1, but the foot 15
It may be provided on the outer wall of. Further, not only the foot portion 15 but also the inner wall or the outer wall of the tubular portion 14 may be provided.

[0014]

As described above, according to the present invention, the tubular portion is formed at the center of the support foot in which the engaging groove is formed between the upper tubular portion and the lower foot portion. A hollow chamber is bored from the upper end to the foot, and a reinforcing rib that gives strength to the foot is provided on the inner wall of the hollow chamber that hits the foot, so the supporting foot has sufficient elasticity while deforming. It has a robust structure and reliably absorbs vibration of the vibrating body. On the other hand, it is possible to obtain the effect that it does not easily come off from the housing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a supporting foot of a vibrating body according to the present invention and an embodiment in which a plurality of supporting feet are attached to a housing of an air pump.

FIG. 2 is a cross-sectional view showing a structural example of a support foot according to the embodiment.

FIG. 3 is a cross-sectional view of essential parts showing a state in which the support foot according to the embodiment is attached to the housing.

FIG. 4 is a cross-sectional view showing one structural example of a conventional support leg.

FIG. 5 is a cross-sectional view of an essential part showing a mounting state of the support foot of the conventional example to the housing.

[Explanation of symbols]

 11 Support Foot 12 Housing 13 Locking Groove 14 Cylindrical Part 15 Foot Part 16 Hollow Chamber 17 Mounting Hole 18 Support Ring Part 19 Grounding Surface 20 Reinforcing Rib

Claims (2)

[Claims] 1. A locking groove that engages with a bottom plate portion of a housing of a vibrating body, a tubular portion that extends above the locking groove, and a foot portion that extends below the locking groove and abuts on a ground surface. A hollow chamber is formed inside the support leg from the upper end of the tubular portion to the foot portion, and the inner wall of the hollow chamber portion corresponding to the foot portion is reinforced to give strength to the foot portion. A supporting leg for a vibrating body, which is characterized in that a rib is formed. 2. A locking groove that engages with a bottom plate portion of a housing of a vibrating body, a cylindrical portion that extends above the locking groove, and a foot portion that extends below the locking groove and abuts on a ground surface. A hollow chamber is formed inside the support foot from the upper end of the tubular portion to the foot portion, and a reinforcing rib that gives strength to the foot portion is formed on the outer wall of the foot portion. The supporting legs of the vibrating body.