Brush-type motor

The brush-type motor reduces noise by incorporating a guide slot and guide means in the brush holder to suppress brush shaking, addressing vibration-induced noise issues in automotive applications.

WO2026127197A1 Publication Date: 2026-06-18S&T DAEWOO
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
S&T DAEWOO
Filing Date
2024-12-13
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Brush-type motors generate noise due to vibration-induced shaking of the brush, which collides with the brush holder during operation, particularly in sensitive automotive applications like adjustable seats, wipers, and automatic windows, causing discomfort.

⚗Method used

The brush-type motor incorporates a guide slot in the brush holder with a guide means, such as a guide rail, guide wire, plate spring, or torsion spring, to suppress brush shaking and reduce noise by fitting into the guide slot, thereby minimizing collisions between the brush and the brush holder.

🎯Benefits of technology

The implementation of guide means in the brush holder effectively reduces noise generated by brush vibration, enhancing the usability of automotive convenience features by minimizing collisions and improving operational quietness.

✦ Generated by Eureka AI based on patent content.

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Abstract

A brush-type motor, according to the present invention, comprises: a stator; a rotor; a brush making contact with the rotor; and a brush hold for securing the brush, wherein the brush hold is formed in a pocket shape into which the brush is inserted, a guide slot is formed in a side surface of the brush, and a guide means is provided to the brush hold. The guide means includes a guide rail which is provided in one side surface of the brush hold and is formed so as to be projected toward the inside of the brush hold so as to be fitted into the guide slot. The guide rail is formed by inwardly bending any one front end among two front ends which are formed by bisecting the one surface of the brush hold in the length direction. The guide means includes a guide wire which is mounted in one side surface of the brush hold and protrudes toward the inside of the brush hold. The guide slot is formed so as to extend in the length direction of the brush and is formed in each of side surfaces of the brush which face each other, and the guide means includes leaf springs which are mounted in the brush hold so as to be fitted into the respective guide slots. The guide means includes torsion springs which are mounted in the brush hold so as to be fitted into the respective guide slots.
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