Stator mandrel assembly, stator assembly, linear motor, electromagnetic suspension and power equipment

By setting up a mounting groove position sensing device on the outer surface of the mandrel body of the stator mandrel assembly, the problem of large volume of the stator mandrel assembly and easy damage to the position sensing device is solved, and a smaller volume and higher accuracy and service life are achieved.

CN222654881UActive Publication Date: 2025-03-21BYD CO LTD
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Patent Information

Application Number
CN202420651480.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-29
Publication Date
2025-03-21
Estimated Expiration
2034-03-29

AI Technical Summary

Technical Problem

In the existing linear motors, position sensing devices are provided with an outer peripheral wall of the stator mandrel, resulting in a large volume of the stator assembly and easy to cause frictional damage during movement.

Method used

A first mounting groove is provided on the outer surface of the mandrel body, and a position sensing device is placed to avoid being arranged on the outer peripheral wall of the stator mandrel assembly, thereby reducing the diameter and volume of the stator mandrel assembly.

Benefits of technology

The volume of the stator mandrel assembly and linear motor is effectively reduced, the wear caused by the contact between the position sensing device and the case is avoided, and the accuracy and service life of the position sensing device are improved.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a stator core shaft assembly, a stator assembly, a linear motor, an electromagnetic suspension and a power device, the stator core shaft assembly comprises a core shaft body, the outer surface of the core shaft body is provided with a first installation groove extending upwards in the axial direction; the outer sleeve is arranged on at least part of the periphery of the mandrel body; and the position sensing device is arranged in the first mounting groove. According to the stator core shaft assembly designed by the utility model, the first mounting groove for accommodating the position sensing device is arranged on the outer surface of the core shaft body 10, so that the position sensing device is prevented from being arranged on the peripheral wall of the stator core shaft assembly, and the diameter of the stator core shaft assembly is reduced; and meanwhile, the abrasion of the position sensing device caused by the contact between the linear bearing or the shell and the position sensing device when the linear motor works is avoided.
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