Magnetic switch of automobile starting motor

By designing the limit part and the structure of the expansion bolt in the magnetic switch of the car starter motor, the bolt loosening problem caused by vibration is solved, and the stable connection and working stability between the magnetic switch and the starter motor are achieved.

CN222813487UActive Publication Date: 2025-04-29温州汉达汽车部件有限公司
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Patent Information

Application Number
CN202420724242.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-10
Publication Date
2025-04-29
Estimated Expiration
2034-04-10

AI Technical Summary

Technical Problem

The magnetic switches of existing automobile starter motors are prone to loosening of bolts due to vibration during use, which will affect the normal operation of the magnetic switch.

Method used

A magnetic switch for a car starter motor is designed, and its shell is equipped with an iron core and an installation column surrounding the iron core. The end of the mounting column forms a limiting part, which is connected to the shell through a tightening bolt to form a stable fixed structure to avoid vibration being directly transmitted to the bolt.

Benefits of technology

Through the design of the limiting part and the expansion bolt, a stable connection between the magnetic switch and the starting motor is achieved, which avoids loosening problems caused by vibration and improves the working stability of the magnetic switch.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222813487U_ABST
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Abstract

The utility model relates to a magnetic switch of an automobile starting motor, which comprises a shell, an iron core is arranged in the shell in a penetrating manner, a plurality of mounting columns surrounding the iron core are integrally formed on the end surface of the shell, and a circular-truncated-cone-shaped limiting part is formed at the end part of each mounting column. The outer diameter of the small head end of the limiting part is consistent with the outer diameter of the mounting column, the small head end of the limiting part is connected to the mounting column, an expansion hole is formed in the end face of the limiting part, a plurality of deformation grooves penetrating through the limiting part are formed in the inner wall of the expansion hole, and a threaded hole is formed in the bottom wall of the expansion hole; the end face of the limiting part is provided with an expansion bolt which penetrates through the expansion hole and is connected into the threaded hole in a screwed mode, and the part, located in the expansion hole, of the expansion bolt forms an expansion part abutting against the inner wall of the expansion hole. According to the magnetic switch of the automobile starting motor, the magnetic switch can be more stably connected to the starting motor under the action of the mounting column, so that the working stability of the magnetic switch is ensured.
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