Two-stage vibration-reduction vibration prevention device for electric automobile vacuum pump
An anti-vibration device and two-stage vibration reduction technology, which is applied in the direction of brake transmission, pump/compressor arrangement, brake, etc., can solve problems such as low cost and poor NVH, and achieve reduced research and development costs, strong versatility, and small size effect
Inactive Publication Date: 2020-09-22
HUNAN UNIV AISHENG AUTO TECH DEV
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Problems solved by technology
[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a secondary vibration damping and anti-vibration device for electric vehicle vacuum pumps. The anti-vibration device solves the problem of NVH difference caused by electric vacuum pumps, and is simple, practical and low in cost
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[0029] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] The orientation terms such as up, down, left, right, front and rear in this application document are established based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationship may also change accordingly, so this should not be understood as limiting the scope of protection.
[0031] In the present invention, the terms "installation", "connection", "connection", "connection", "fixation" and so on should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated Connection can also be mechanical connection, electrical connection or mutual communication, direct connection or indirect connection thro...
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The invention relates to a two-stage vibration-reduction vibration prevention device for an electric automobile vacuum pump. The vibration prevention device comprises a mounting support and a vibration reduction assembly, and the mounting part of the mounting support and the vibration reduction assembly are of an L-shaped structure; a vacuum pump body is suspended and mounted on the mounting partof the mounting support in a three-point mounting manner through a damping assembly, and the mounting support is fixed on a vehicle body; the vibration reduction assembly comprises a first rubber bushing, a vibration reduction support and a second rubber bushing; the first rubber bushing and the second rubber bushing are arranged on the vibration reduction support and used for reducing vibration from the vacuum pump body; the first rubber bushing comprises an outer steel bushing, rubber and an inner framework; and the outer steel sleeve and the inner framework are coaxially connected in a sleeved mode, the rubber is arranged between the outer steel sleeve and the inner framework, and a plurality of hollow structures are reserved in the rubber. The device can solve the problem of poor NVH caused by the vacuum pump, and is small in size, simple in structure, flexible in arrangement position and suitable for all vehicle types provided with vacuum pumps.
Description
technical field [0001] The invention relates to a vibration-reducing and anti-vibration mounting device for a vacuum pump of an electric vehicle, in particular to a secondary vibration-reducing and anti-vibration device for a vacuum pump of an electric vehicle. Background technique [0002] Electric vehicles are driven by electric motors, and the traditional engine is canceled, so the vacuum boost is lost. In order to make up for the lost vacuum boost, electric vehicles use electric vacuum pumps to provide vacuum boost. [0003] Usually, the electric vacuum pump is fixed on the bracket through damping springs and rubber pads, and the bracket is directly fixed on the body, but it will lead to poor NVH. Spread the vibrations. If the bracket is fixed on the powertrain, although the NVH can be optimized to a certain extent, it is limited by the form of the powertrain, it is not easy to form a platform, and there are wading problems caused by the small ground clearance. [0004...
Claims
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IPC IPC(8): B60T17/02B60T13/52F16F15/08
CPCB60T13/52B60T17/02F16F15/08
Inventor 安泰日马远征何智成王彬唐慎玉杨光德
Owner HUNAN UNIV AISHENG AUTO TECH DEV