| 摘要 |
PURPOSE:To simply attach and detach a brush by using a screw driver by forming a retainer of a magnetic material and internally containing a permanent magnet in a cap. CONSTITUTION:In a brush holding structure, a retainer 25 is formed of a magnetic material. Accordingly, the retainer 25 attracts a cap 30 which internally contains a permanent magnet 31 by a magnetic attracting force, but since they are attracted by the magnetic attracting force, they can be slid to each other. When the end of a screw driver is inserted into the driver slot of the cap 30 by using an iron screw driver, the cap 30 is attracted to the driver. Accordingly, when a brush 24 is mounted on a brush cylinder 23, the cap 30 and a completed brush are attracted to the end of the driver, integrated, and inserted into the brush cylinder 23, the driver is turned, and the cap 30 is screwed into a brush retainer insulating plate 22. |
