Vibration preventing automobile instrument motor

Abstract

The invention discloses an anti-vibration motormeter motor. An upper surface of an output shaft gear is provided with a boss integrated with the gear; a stainless steel spring piece is arranged between the gear and the inner surface of an upper cover, a central hole of the stainless steel spring piece is matched with the boss, and the convex surface of the stainless steel spring piece is contacted with the surface of the gear; the inner surface of the upper cover is provided with four protrusions which are provided with a hole respectively, and four silicon rubber bars are arranged in the four holes respectively; and when the upper cover is matched with a lower cover, two silicon rubber bards are pressed on the two ends of left coil core and the other two silicon rubber bars are pressed on the two ends of right coil core. During the operation of the anti-vibration motormeter motor, uniform pressure provided with the stainless steel spring piece enables the output shaft gear to operate smoothly during operation; and a silicon rubber spring allows the coil cores and a stator piece to be attached together tightly during operation without fastening by a bolt, and the magnetic resistance on magnetic paths of coils is reduced. The anti-vibration motormeter motor can operate stably on various vehicles in an environment at 40 DEG C below zero to 150 DEG C.

Description

technical field [0001] The invention belongs to vibration isolation and damping technology, in particular to an anti-vibration structure for an automobile meter motor. Background technique [0002] The working environment of automotive instrument motors is at a temperature of -40°C to 150°C, with large vibration and high operating speed, so the reliability requirements for instrument motors are high. [0003] The original automobile instrument motor has no anti-vibration structure, and the coil iron core and the stator piece are connected by bolts. When working, due to the large change of working temperature and large vibration in the car, some parts of the automobile instrument motor, such as the output shaft gear, sometimes have excessive frictional resistance due to vibration, resulting in unstable rotation of the instrument pointer; bolts are connected under alternating temperature and load. It is easy to loosen under the action, which makes the reliability of the autom...

AI Technical Summary

Problems solved by technology

When working, due to the large change of working temperature and large vibration in the car, some parts of the automobile instrument motor, such as the output shaft gear, sometimes have excessive frictional resistance due to vibration, resulting in unstable rotation of the instrument pointer; bolts are connected under alternating temperature and load It is easy to loosen under the action, making the reliability of the car instrument motor not high

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