JPH03239139A - Mounting structure of motor - Google Patents

Abstract

PURPOSE:To form the rubber vibration insulator of a vibration-proof type motor in a specified shape by forming different circular diameters while using the half of an output circumference as a boundary in the shape of the rubber vibration insulator, forming a projection on an inner circumference and preventing the revolution of the rubber vibration insulator and a motor body. CONSTITUTION:Projections (b) shaped to a rubber vibration insulator 3 are formed to the slits (a) of a motor boss, a circular diameter section is placed on a vibration-proof base 2, notches are shaped on both sides of a top face, and the centers of the notches are curved and given spring characteristics. Pawls mounted on both sides of the top face are bonded mutually, and the rubber vibration insulator 3 is fixed without using a screw. The larger semicircular section of the rubber vibration insulator 3 is brought into contact with both ens of the vibration-proof base 2, thus preventing the rotation of a motor. A copper wire is wound on the vibration-proof base 2 in order to conduct electricity between the slitted section of the motor boss and the vibration-proof base 2, thus obviating breakdown strength. Accordingly, the vibration-proofing of the motor is performed positively, and structure can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] 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 structure in which the anti-vibration rubber and the main body of the motor can be prevented from rotating by having the outer periphery of the anti-vibration rubber with different diameters on the half-circle and protrusions on the inner circumference.

[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, by making the outer half of the anti-vibration rubber have a different diameter, the motor could hit the anti-vibration base. The rotation of the main body can be prevented, and the anti-vibration rubber can be prevented from rotating by providing a protrusion on the inner periphery and fitting it into a slit groove on the outer periphery of the end bracket boss. Mechanical structure prevents both rotations, ensuring reliability.

〔Example〕

This invention mainly relates to an improvement in the mounting structure of a blower motor.

The mounting structure of the electric motor in a conventional blower is constructed as shown in FIG. That is, in FIG. 1, 1 is an electric motor, 2 is a U-shaped anti-vibration base that has a semicircular hole on the upper edge of the upright surface and notched claws 7 at both ends, and 3 is attached to an end bracket 8 of the electric motor 1. 4 is a reinforcing ring of anti-vibration rubber fitted into the outer periphery of the anti-vibration rubber 3; 5 is a notched claw 7 of the anti-vibration base at one end for fixing the electric motor 1 to the anti-vibration base 2; This is a fastening metal fitting that is provided with a ground wire 9 to be hooked to the ground wire 9 and has a hole for a tightening screw 6 at the other end.

The motor mounting structure constructed in this manner has a complicated structure, a large number of parts, and the need for tightening the screws of the fastening fittings, resulting in poor workability and increased costs.

This invention consists of a vibration isolating rubber 3 and a fastening fitting 5. Anti-vibration base 2. This is an attempt to eliminate the drawbacks of the conventional motor by changing the shape of the boss portion of the motor. An embodiment of the present invention will be described below based on the drawings.

FIG. 2 is a detailed view of the present invention, in which a protrusion provided on the anti-vibration rubber 3 is fitted into the slit a of the boss of the motor 1, and the anti-vibration rubber on the side surface of the anti-vibration base 2 is fitted. The diameter of the circle is different in the 3 halves, and the smaller diameter part is placed on the anti-vibration base 2, and the anti-vibration rubber is placed.

Notches are provided on both sides of the upper surface of the base, and the central portion is curved to provide spring characteristics. The anti-vibration rubber 3 can be fixed without using screws by connecting the claws provided on both sides. The inside of the larger half of the anti-vibration rubber 3 touches both ends of the anti-vibration base 2 to prevent the motor from rotating. Further, in order to establish electrical continuity between the slit portion of the electric motor boss and the vibration isolating base 2, copper wires are wrapped around the vibration isolating base 2 to prevent voltage resistance.

FIG. 3 shows the vibration isolating rubber 3 of the present invention. The protrusions are provided on the inner periphery, and the outer periphery has a smaller diameter on the side that is fitted to the anti-vibration base 2, and a larger diameter for reflective power. A groove is provided to prevent strain.

The projection on the inner periphery and both ends of the enlarged half inside of the outer periphery contact the vibration isolating base 2 to prevent rotation.

In FIG. 4, the vibration isolating rubber 3 can be fixed without using screws by using a tightening fitting 5 which is curved in the center and provided with claws at both ends.

FIG. 5 shows a vibration-proof base 2, which is provided with claws C at both ends of its upper end.

FIG. 6 shows the end bracket of the electric motor 1.

A slit a is provided in the boss portion.

As described above, in this invention, a slit is provided in the boss portion of the electric motor, and the vibration isolating rubber 3 is fitted into the slit, and the outer periphery has different semicircles to prevent rotation on the vibration isolating base. Since it is fixed without using screws, it has the advantage that the motor can be reliably supported and vibration-proofed, and that the structure is simple and can be easily assembled, improving workability.

〔Effect of the invention〕

According to the present invention, by changing the diameter of the protrusion on the inner periphery of the anti-vibration rubber and half the diameter on the outer periphery, the rotation of the motor body and the anti-vibration rubber is prevented with high reliability of the mechanical structure. It has a structure that allows for easy assembly without using it.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a conventional motor mounting structure, Fig. 2 is a diagram showing an embodiment of the present invention, Fig. 3 is a diagram showing a vibration isolating rubber used in this invention, and Fig. 4 is a diagram showing an embodiment of the present invention. FIG. 5 is a diagram showing a vibration isolating base used in this invention, and FIG. 6 is a diagram showing an end bracket used in this invention. 1... Electric motor, 2... Anti-vibration base, 3... Anti-vibration rubber, 4... Reinforcement ring for anti-vibration rubber, 5... Tightening metal fitting, 6...
...Tightening screw, 7...Notch claw of anti-vibration base, 8...
End bracket, 9...Ground wire, a...Slit, b...Protrusion, C...Claw.

Claims (1)

[Claims] 1. An anti-vibration structure for an electric motor in which the electric motor is supported by an anti-vibration 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-proof base comprising a cylindrical fitting part that is fitted into the notch, and an upper half of the upper periphery having a larger diameter than the fitting part;
The anti-vibration base is formed into a shape with several protrusions that can be fitted onto the inner circumference at both ends of the upright surface, and the inner circumference of the anti-vibration rubber is attached to the outer circumference of the boss portion of the end bracket of the electric motor. A mounting structure for an electric motor, characterized in that a slit groove into which a protrusion of the part can fit is provided, and anti-vibration rubber and rotation prevention of the motor body are provided.