Wiper motor with high electromagnetic compatibility

Abstract

The invention discloses a wiper motor with high electromagnetic compatibility, and relates to the technical field of electronics. The mounting position of an electronic device is mainly adjusted, a capacitor (1) is mounted on a pressing cover part (10), and a pin of the capacitor (1) are fixed in a chuck (11) of a circuit chip (12); the pressing cover part (10) is mounted on the upper portion of areducer shell (9); three inductors (7) are uniformly mounted on a brush carrier ring (4), a brush box (6) is mounted beside each inductor (7), and an electric brush (2) is mounted in each brush box (6); three elastic parts (3) are mounted on the brush carrier ring (4), and a protector (5) is mounted beside one elastic part (3); two feed-through capacitors (13) are mounted on the other surface ofthe brush carrier ring (4). The wiper motor is ingenious in structure and easy to implement, achieves the electromagnetic compatibility effect meeting an requirement and also conforms to the trend that electric devices in the technical field of motors develop in the directions of miniaturization, integration, high performance and the like.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a wiper motor with high electromagnetic compatibility. Background technique [0002] In the design of existing wiper motors, the improvement of electromagnetic compatibility performance is generally achieved by increasing the capacitance value, increasing the inductance, or increasing the number of capacitance or inductance to achieve a better filtering effect, thereby reducing the interference of the motor on other electronic products and improving Its electromagnetic compatibility capability. [0003] Such as figure 1 Shown is the existing wiper motor capacitor and inductance layout, the brush holder ring 4 is equipped with capacitor 1, the number is 2; the brush box 6, the number is 3; the inductance component 3, the number is 2; the brush 2, The quantity is 3; the number of protector 5 is 1. It can be seen from the figure that the capacitor 1, the brush 2 and the prote...

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Problems solved by technology

[0003] like figure 1 Shown is the existing wiper motor capacitor and inductance layout, the brush holder ring 4 is equipped with capacitor 1, the number is 2; the brush box 6, the number is 3; the inductance component 3, the number is 2; the brush 2, The quantity is 3; the number of protector 5 is 1. It can be seen from the figure that the capacitor 1, the brush 2 and the protector 5 are all welded on the brush holder ring 4, and there are 11 parts in total on the brush holder ring 4 , this structure has already made the brush holder ring 4 look very compact, and it is no longer possible to improve its EMC capability by increasing the number of capacitors and inductances under such limited space conditions, and this method will increase the filtering capacity of capacitors, inductances, etc. The space occupied by the components has been unable to meet the industry's increasing requirements for the electromagnetic compatibility of wiper motors in the case of limited internal space of the motor.

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