Vibration attenuation structure for electric water pump

Abstract

The invention provides a vibration attenuation structure for an electric water pump. The vibration attenuation structure comprises a housing (1), a PCB (Printed Circuit Board) (2) and mounting terminals (7). The PCB (2) is fixedly connected with the housing (1); the mounting terminals (7) comprise terminal main parts (73); each terminal main part (73) is of an inverted S-shaped structure, and is fixedly mounted on the PCB (2); and the mounting terminals (7) are fixedly connected with motor enamelled wires (8). Through the arrangement of the mounting terminals and the fixed connection between the mounting terminals and the motor enamelled wires, a whole damping vibration attenuation system can be formed, so that the vibration energy of the electric water pump is quickly consumed in a damping system, the risk of the operation failure under vibration circumstance of the mounting terminals is greatly reduced, and the working reliability of the electric water pump is correspondingly improved.

Description

technical field [0001] The invention relates to the field of electronic water pump vibration reduction design, in particular to an electronic water pump vibration reduction structure. Background technique [0002] The electronic water pump used in automobiles is mainly composed of a motor, an electric control part and a water conservancy part. The electric control part is formed by connecting various electronic components on the PCB. The electrical connection and signal transmission between the motor and the controller are mainly through Soldering is performed. However, this soldering is prone to the following problems: [0003] First, the welding surface is easy to oxidize at high temperature, which can easily lead to local poor contact and make the electronic water pump work abnormally. [0004] Second, the weld is a strong connection. During the working process of the electronic water pump, the electronic water pump itself is also in a vibration environment, and it is e...

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Problems solved by technology

[0003] First, the welding surface is easy to oxidize at high temperature, which can easily lead to local poor contact and make the electronic water pump work abnormally

[0004] Second, the weld is a strong connection. During the working process of the electronic water pump, the electronic water pump itself is also in a vibrating environment, and it is easy to cause connection failure due to vibration, which makes the electronic water pump work abnormally.

[0005] Third, since the connection of various electronic components on the PCB is done through automated patching, and the PCB needs to go through a high-temperature furnace to complete the soldering operation after the PCB is patched. During this process, the flow of tin liquid may also cause the soldering on the PCB. The position of the electronic components is shifted, which leads to poor PCB placement, and then causes the electronic water pump to work abnormally

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