Low-vibration single-cylinder electric diaphragm vacuum pump

By adopting a two-stage shock absorption structure and a damping vibration isolation mechanism with adjustable spring stiffness in a single-cylinder electric diaphragm vacuum pump, the problem of resonance between the pump and the automotive parts is solved, and the low vibration design is achieved, which improves the stability and shock resistance of the system. ability.

CN222276898UActive Publication Date: 2024-12-31HUNAN TENGZHI MECHANICAL & ELECTRICAL CO LTD
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Patent Information

Application Number
CN202323492539.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-21
Publication Date
2024-12-31
Estimated Expiration
2033-12-21

AI Technical Summary

Technical Problem

Due to its structural characteristics, the diaphragm vacuum pump is prone to resonance with parts such as automobile beams, resulting in large low-frequency vibrations, affecting driving experience and beam strength.

Method used

A low-vibration single-cylinder electric diaphragm vacuum pump is designed, adopting a two-stage shock absorbing structure, including a first-stage shock absorbing pad, a cone spring, a shock absorbing screw and a second-stage shock absorbing pad, forming a damping vibration isolation mechanism with adjustable spring stiffness , adjust the spring stiffness by controlling the tightening torque or angle of the shock absorber screw, reduce vibration transmission and avoid resonance points.

Benefits of technology

It effectively reduces the vibration transmission of the vacuum pump to the mounting bracket, reduces the resonance with other components, and improves the stability and shock resistance of the system.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a low-vibration single-cylinder electric diaphragm vacuum pump which comprises a pump cover, a diaphragm, a connecting rod, a crank, a motor, a primary shock pad, a supporting plate, a truncated cone spring, a shock absorption screw rod, a secondary shock pad, a bearing and a pump body, the pump body is installed on the supporting plate through the primary shock pad, and a damping vibration isolation mechanism is installed on the lower surface of the supporting plate. The damping vibration isolation mechanism comprises a second-stage damping pad, a truncated cone spring and a damping screw rod, a shaft hole is formed in the middle of the second-stage damping pad, the lower end of the second-stage damping pad is conical, a guide groove used for installing the truncated cone spring is formed in the lower end face of the second-stage damping pad, and the ring diameter of the truncated cone spring is gradually reduced from top to bottom; and the damping screw rod sequentially penetrates through the shaft holes of the truncated cone spring and the secondary damping pad from bottom to top and then is fixedly connected with the supporting plate. According to the technical scheme, two-stage damping is carried out on the vacuum pump assembly, vibration transmission of the vacuum pump assembly to the vacuum pump mounting support can be effectively reduced, and resonance points of the vacuum pump mounting support and other parts are avoided.
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