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Power assembly suspension bushing

A technology of powertrain and bushing, which is applied in the direction of power unit, electric power unit, non-rotational vibration suppression, etc. It can solve the problems of torsional deformation of rubber parts, changes in suspension performance, and failure to work normally.

Pending Publication Date: 2021-06-25
BOGE ELASTMETALL SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the inner sleeve 2' rotates relative to the outer sleeve 1', the rubber part will be twisted and deformed, which will change the performance of the suspension and prevent it from working properly.

Method used

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  • Power assembly suspension bushing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see image 3 with Figure 4 , a powertrain suspension bushing, including an inner casing 2, an anti-rotation pin 5, an outer casing 1, a rubber main spring 3 and several vibration isolation blocks 4 arranged on the rubber main spring 3.

[0027] The inner casing 2 and the outer casing 1 are arranged coaxially from the inside to the outside; the rubber main spring 3 is arranged between the inner casing 2 and the outer casing 1, and the inner casing 2 and the outer casing 1 are partially vulcanized and connected by the rubber main spring 3 together; the inner casing 2 is provided with an anti-rotation pin installation hole; the anti-rotation pin 5 is press-fitted into the anti-rotation pin installation hole through interference fit; the vibration isolation block is composed of rubber protrusions on the rubber main spring 3; The vibration isolation blocks 4 are asymmetrically distributed on the rubber main spring 3 , and the vibration isolation blocks 4 have different sha...

Embodiment 2

[0030] see Figure 5 with Image 6 , a powertrain suspension bushing, the difference from Embodiment 1 is that the main rubber spring 3 has an annular columnar structure, and vibration isolation blocks 4 are distributed on at least one end surface of the main rubber spring 3 . The number, shape, size and position of the vibration isolation blocks 4 in the main vibration isolation direction are different, reflecting the characteristics of asymmetrical layout.

[0031] see Figure 7 , the high-frequency dynamic stiffness 100 of the design scheme of the powertrain suspension bush of the present invention is symmetrical with the high-frequency dynamic stiffness 200 of the design scheme of the suspension bush without vibration isolation blocks in the prior art. The high-frequency dynamic stiffness of the design scheme of the suspension bushing of the distributed vibration isolation blocks is compared with 300, and the results show that: the powertrain suspension bushing of the pr...

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Abstract

The invention discloses a power assembly suspension bushing which comprises an inner sleeve, an anti-rotating pin, an outer sleeve, a rubber main spring and a plurality of vibration isolation blocks arranged on the rubber main spring, and the inner sleeve and the outer sleeve are sequentially and coaxially arranged from inside to outside. The rubber main spring is arranged between the inner sleeve and the outer sleeve, and the inner sleeve and the outer sleeve are connected together through partial vulcanization of the rubber main spring. An anti-rotating pin mounting hole is formed in the inner sleeve. The anti-rotating pin is pressed into the anti-rotating pin mounting hole through interference fit. The plurality of vibration isolation blocks are asymmetrically distributed on the rubber main spring, and the shapes of the vibration isolation blocks are different. The power assembly suspension bush has low dynamic stiffness at the high-frequency band of 600Hz-3000Hz, is suitable for pure electric vehicles, has an anti-rotation function, and is simple in structure, low in cost and easy to produce.

Description

technical field [0001] The invention relates to the field of vehicle power assembly suspension rubber metal shock absorbers, in particular to a power assembly suspension bushing. Background technique [0002] Pure electric vehicles are driven by motors. The motors have high torque output from low speeds. The motors rotate at high speeds, and the highest excitation frequency is much higher than that of traditional fuel vehicle engines. The high-frequency hardening phenomenon of the traditional rubber bushing makes the dynamic stiffness of the traditional bushing larger in the high-frequency range. As a result, the vibration isolation capability of the suspension is reduced. However, pure electric vehicle motors require the suspension system to have low dynamic stiffness in the high frequency band to ensure its vibration isolation capability. [0003] see figure 1 with figure 2 , the traditional suspension bushing includes an outer casing 1' and an inner casing 2', a rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/00F16F1/38F16F15/08
CPCB60K1/00F16F1/3828F16F1/3835F16F1/3856F16F15/08
Inventor 黄橙麦克尔·史密斯皮特·迈斯戴登钊陈国栋刘涛
Owner BOGE ELASTMETALL SHANGHAI CO LTD
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