JPH04168949A - Vibration-proof motor - Google Patents

Abstract

PURPOSE:To prevent a rubber vibration isolator and a motor body from rotating by fitting a metal ring on the outer periphery of the rubber vibration isolator, providing protrusions on the side face thereof, and further providing protrusions on the outer periphery thereof. CONSTITUTION:A rubber vibration isolator 3 is fitted on the boss 8 of an end bracket 10 and a protrusion (b) provided on the side face thereof is fitted in a hole made in the plane part thereof thus blocking the rotation of the rubber vibration isolator 3. Furthermore, protrusions (c), (d) are provided on the outer periphery of the rubber vibration isolator 3 and the protrusion (c) is fitted in a slit hole (e) of a reinforcing ring 4 thus preventing fall off of the rubber vibration isolator 3 without requiring bonding with adhesive. The protrusion (d) is clamped by metals 5 thus preventing rotation of a motor. According to the constitution, the motor body and the rubber vibration isolator are easily prevented from rotation through a highly reliable mechanical structure without employing adhesive, resulting in cost reduction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a vibration-proof electric motor that is attached to a vibration-proof base via vibration-proof rubber.

[Conventional technology]

For example, the method of installing vibration-proof rubber on a vibration-proof motor is
As shown in No. 89765, the rotation of the motor body is generally prevented by frictional resistance between the anti-vibration rubber outer ring and the fastening fitting, so rotation cannot be prevented reliably.

[Problem to be solved by the invention]

In anti-vibration electric motors, it has been difficult to simultaneously and reliably prevent the anti-vibration rubber and the motor body from rotating.

The present invention relates to a vibration-proof electric motor, and an object of the present invention is to provide vibration-proof rubber with a prescribed shape.

[Means to solve the problem]

This is an anti-vibration electric motor, with a metal ring fitted around the outer periphery in the shape of anti-vibration rubber, and protrusions are also provided.Additionally, several protrusions are also provided on the sides to prevent the rotation of the anti-vibration rubber and the motor body. The structure should be designed to prevent this.

[Effect]

The purpose of installing a vibration-proof rubber motor is to prevent the vibrations of the motor from being transmitted to the mating mounting base, and the rubber is inserted into the motor boss and fixed to the vibration-proof base with a tightening metal screw. Rotation of the motor body was previously prevented by frictional resistance due to the surface contact between the anti-vibration rubber and the clamping metal, but this time a metal ring was fitted around the outer circumference of the anti-vibration rubber, a protrusion was provided on the fitting part of the clamping metal, and scissors were prevented from rotating. By inserting the protrusion into the end bracket, rotation of the motor body can be prevented, and by providing a protrusion on the side surface and fitting it into a hole in the flat surface of the end bracket, rotation of the vibration isolating rubber can be prevented.

Mechanical structure prevents both rotations, ensuring reliability.

〔Example〕

This invention primarily relates to improvements in vibration-proof motors for blowers.

The structure of a vibration-proof motor in a conventional blower is shown in FIG. That is, in FIG. 1, 1 is an electric motor, 2 is a U-shaped anti-vibration base having a semicircular hole in the upper edge of the upright surface and notched claws 7 at both ends, and 3 is attached to the boss part 8 of the electric motor 1. 4 is the vibration isolating rubber 3.
A reinforcing ring 5 fitted on the outer periphery of the vibration isolating base 2 is provided with a slit 9 at one end to be hooked onto the notch 7 of the vibration isolating base 2 in order to fix the electric motor 1 to the vibration isolating base 2, and a reinforcing ring 5 at the other end for a tightening screw 6. It is a fastening fitting with a hole.

In the vibration-proof motor structure constructed in this manner, the reinforcing ring 4 fitted around the outer periphery of the vibration-proof rubber 3 is fixed with an adhesive, resulting in poor workability and increased costs.

This invention consists of a vibration-proof rubber 3 and a reinforcing ring 4. End bracket 1
This is an attempt to eliminate the drawbacks of the conventional method by changing the shape of the o. An embodiment of the present invention will be described below based on the drawings.

FIG. 2 is a detailed view of the present invention, showing the end bracket 1
The anti-vibration rubber 3 is prevented from rotating by fitting the anti-vibration rubber 3 into the boss 0 and also fitting the protrusion provided on the side surface of the anti-vibration rubber 3 into the hole a of the flat part.

Incidentally, protrusions c and d are provided on the outer periphery of the vibration isolating rubber 3, and the slit hole e of the reinforcing ring 4 is fitted into the protrusion C to prevent it from falling off, so there is no need to fix it with an adhesive or the like. The protrusion d prevents the electric motor 1 from rotating by being inserted into the fastening fitting 5.

Figure 3 shows the anti-vibration rubber 3 of the present invention. A protrusion is provided on the side surface, and protrusions c and d are also provided on the outer periphery, into which the reinforcing ring 4 is fitted.

In Figure 4, a slit 9 is provided with a fastening fitting 5.

The protrusion f inserted into the slit hole e of the reinforcing ring 4 is provided to eliminate misalignment.

FIG. 5 shows the end bracket 10. A hole a is made in the flat part.

As described above, in the present invention, a hole is made in the plane of the end bracket 1o, a projection of the vibration isolating rubber 3 is fitted into the hole, and rotation is prevented by the projection provided on the outer periphery. Because the reinforcing ring is not fixed with adhesive, parts can be manufactured at low cost, and assembly work is easy.
It has the advantage of ensuring reliable vibration isolation.

〔Effect of the invention〕

According to the present invention, by providing protrusions on the side surface and outer periphery of the anti-vibration rubber, the rotation of the motor body and anti-vibration rubber can be prevented with high mechanical structure reliability, and can be easily prevented without using adhesives. It is inexpensive because it has a structure that allows assembly work.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are diagrams showing a conventional vibration-proof motor structure, and FIGS. 2(a) and (b) are diagrams showing an embodiment of the present invention.
FIGS. 3(a) and 3(b) are diagrams showing the vibration isolating rubber used in this invention, FIG. 4 is a diagram showing the tightening fittings used in this invention,
FIGS. 5(a) and 5(b) are views showing end brackets used in the present invention. DESCRIPTION OF SYMBOLS 1... Electric motor, 2... Anti-vibration base, 3... Anti-vibration rubber, 4... Reinforcement ring, 5... Tightening metal fittings, 6... Tightening screw, 7... Anti-vibration Swinging base notch claw, 8...end bracket boss.

Claims (1)

[Claims] 1. A vibration-isolating structure for an electric motor in which the electric motor is supported by a vibration-isolating base via anti-vibration rubber, which includes notched claws at both ends of the upright surface and a U-shaped notch cut out from the center of the upper edge of the upright surface. A vibration isolation base having a cylindrical shape and a metal ring fitted into the notch, and a metal ring to prevent the metal ring from falling off.
The end bracket of the electric motor is molded into a shape with several protrusions on the outer periphery, protrusions on the tightening metal fitting part, and several protrusions that can be fitted on the side surface. 1. A vibration-proof electric motor, characterized in that a hole into which a protrusion on a side surface of the vibration-proof rubber can fit is provided in a flat part of the vibration-proof rubber, thereby preventing rotation of the vibration-proof rubber and the motor body.