Motor bushing and motor

Abstract

The invention discloses a motor bushing motor, which comprises an outer sleeve and an inner core, the outer sleeve is an annular main body structure formed by combining an upper ring body and a lower ring body, and the upper ring body and the lower ring body are respectively provided with a plurality of mutually matched embedding teeth and embedding grooves; each of the upper ring body and the lower ring body is formed by splicing a plurality of arc-shaped split bodies, and the split bodies on the upper ring body and the lower ring body correspond to each other in a staggered manner; a rubber body is arranged between the outer sleeve and the inner core, integrally-formed damping ribs are arranged on the two sides of the surface of the rubber body, and balancing weights are wrapped in the damping ribs. The damping rubber is compact and reasonable in structure and convenient to operate, and the integrally-formed damping ribs are arranged on the two sides of the surface of the rubber body and used for absorbing vibration energy; under the working conditions of small amplitude and high frequency, vibration is absorbed through the damping ribs, the dynamic stiffness of the bush is improved, and the bush meets the use requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor bushing and a motor. Background Art

[0002] In today's market where electric vehicles are becoming more and more popular, the demand for motor mounts is gradually increasing; for rubber shock-absorbing mounts for fuel vehicles, the resonant frequency of the rubber main spring is about 350-400Hz, and electric vehicles, due to their high speed, will also have correspondingly higher frequency requirements, which is more obvious in the motor mount. The motor mount is usually composed of a metal bracket and a rubber bushing, which connects the body and the motor through the mounting holes of the bracket and the inner core mounting holes of the bushing, where the rubber bushing provides a vibration isolation effect. The modal requirements of electric vehicles for motor mounts are around 1000Hz. Of course, there may be some differences between different OEMs, but the difference will not be too large.

[0003] With existing conventional bushings, resonance will occur at around 400Hz during vehicle NVH performance debugging, resulting in poor vehicle comfort and affecting driving experience. Summary of the invention

[0004] In view of the above problems, the present invention provides a motor bushing and a motor.

[0005] The technical solution of the present invention is as follows:

[0006] A motor bushing, comprising an outer sleeve and an inner core, wherein the outer sleeve is an annular main body structure composed of an upper ring body and a lower ring body, wherein the upper ring body and the lower ring body are respectively provided with a plurality of interlocking teeth and interlocking grooves that cooperate with each other; the upper ring body and the lower ring body are both formed by splicing a plurality of arc-shaped split bodies, and the plurality of split bodies on the upper ring body and the lower ring body are staggered and correspond to each other;

[0007] A rubber body is provided between the outer shell and the inner core, and both sides of the surface of the rubber body are provided with integrally formed shock-absorbing ribs for absorbing vibration energy;

[0008] The shock-absorbing ribs are wrapped with counterweight blocks to enhance the shock-absorbing effect of the shock-absorbing ribs.

[0009] In a further technical solution, the engaging groove is a dovetail groove, and the engaging tooth is a dovetail block matching the dovetail shape of the engaging groove.

[0010] In a further technical solution, the engaging teeth and the engaging grooves are interference fit.

[0011] In a further technical solution, the arc center angle of each of the split bodies is less than or equal to 90°.

[0012] In a further technical solution, at least one of the split bodies is processed with a heat dissipation hole.

[0013] In a further technical solution, an elastic member mounting hole is processed on at least one of the split bodies.

[0014] In a further technical solution, at least one of the split bodies is processed with a stator lead through hole.

[0015] The present invention also provides a motor equipped with the motor bushing.

[0016] The beneficial effects of the present invention are:

[0017] The present invention has a compact and reasonable structure and is easy to operate. Both sides of the surface of the rubber body are provided with integrally formed shock-absorbing ribs for absorbing vibration energy. Under small amplitude and high frequency working conditions, the vibration is absorbed by the shock-absorbing ribs, and the dynamic stiffness of the bushing is increased, so that the bushing meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the motor bushing described in an embodiment of the present invention.

[0019] Description of reference numerals:

[0020] 1. Split; 2. Engaging teeth; 3. Engaging groove. DETAILED DESCRIPTION

[0021] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] Embodiment 1:

[0023] A motor bushing, such as Figure 1 As shown, it comprises an outer sleeve and an inner core, wherein the outer sleeve is an annular main body structure composed of an upper ring body and a lower ring body, and the upper ring body and the lower ring body are respectively provided with a plurality of interlocking teeth 2 and interlocking grooves 3 that cooperate with each other; the upper ring body and the lower ring body are both spliced ​​by a plurality of arc-shaped split bodies 1, and the plurality of split bodies 1 on the upper ring body and the lower ring body are staggered and correspond to each other;

[0024] A rubber body is provided between the outer shell and the inner core, and both sides of the surface of the rubber body are provided with integrally formed shock-absorbing ribs for absorbing vibration energy;

[0025] The shock-absorbing ribs are wrapped with counterweight blocks to enhance the shock-absorbing effect of the shock-absorbing ribs.

[0026] In another embodiment, if Figure 1 As shown, the engaging groove 3 is a dovetail groove, and the engaging tooth 2 is a dovetail block matching the dovetail shape of the engaging groove 3 .

[0027] In this embodiment, the engaging teeth 2 and the engaging grooves 3 are interference fit.

[0028] In this embodiment, the arc center angle of each of the split bodies 1 is less than or equal to 90°.

[0029] In another embodiment, at least one of the split bodies 1 is processed with heat dissipation holes.

[0030] In another embodiment, at least one of the split bodies 1 is processed with an elastic member mounting hole.

[0031] In another embodiment, at least one of the split bodies 1 is processed with a stator lead through hole.

[0032] Embodiment 2:

[0033] A motor is equipped with the motor bushing described in Example 1.

[0034] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A motor bushing, comprising an outer sleeve and an inner core, characterized in that: The outer sleeve is an annular main body structure composed of an upper ring body and a lower ring body, and the upper ring body and the lower ring body are respectively provided with a plurality of interlocking teeth and interlocking grooves that cooperate with each other; the upper ring body and the lower ring body are both spliced ​​by a plurality of arc-shaped split parts, and the plurality of split parts on the upper ring body and the lower ring body are staggered and correspond to each other; A rubber body is provided between the outer shell and the inner core, and both sides of the surface of the rubber body are provided with integrally formed shock-absorbing ribs for absorbing vibration energy; The shock-absorbing ribs are wrapped with counterweight blocks to enhance the shock-absorbing effect of the shock-absorbing ribs.

2. The motor bushing according to claim 1, characterized in that: The engaging groove is a dovetail groove, and the engaging teeth are dovetail blocks matching the dovetail shape of the engaging groove.

3. The motor bushing according to claim 2, characterized in that: The engaging teeth and the engaging grooves are interference fit.

4. The motor bushing according to claim 1, characterized in that: The arc center angle of each split body is less than or equal to 90°.

5. The motor bushing according to claim 1, characterized in that: At least one of the split bodies is provided with a heat dissipation hole.

6. The motor bushing according to claim 1, characterized in that: At least one of the split bodies is provided with an elastic member mounting hole.

7. The motor bushing according to claim 1, characterized in that: At least one of the split bodies is processed with a stator lead through hole.

8. A motor, characterized in that: The motor is equipped with the motor bushing described in any one of claims 1 to 7.

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