Patent Number: 6,294,857

Title: Structure for attaching brush holders to an electric power tool

Abstract: A pair of brush assemblies 1 for use in an electric power tool each includes a brush holder 2 in which a carbon brush is inserted, a pair of elastic strips 7 protruding from the outside lower edges of the brush holder 2. The elastic strips 7 are folded back inward of the brush holder 2 such that each of the strips has a tapering, V-shaped cross-section and has elasticity in the widthwise direction of the brush holder 2. A pair of brush holder mounts 14 are provided on a motor housing of the electric power too, on which the brush assemblies 1 are installed. Each brush holder mount 14 includes a pair of positioning slots 16 for receiving the elastic strips 7 of the brush holder 2. When fitted in the positioning slots 16, the elastic strips 7 securely engage the side walls of the slots so as to prevent unintended removal of the brush holders 2 from the brush holder mounts 14.

Inventors: Nakane; Shinichi (Okazaki, JP)

Assignee: Makita Corporation

International Classification: H01R 39/00 (20060101); H02K 5/14 (20060101); H01R 39/41 (20060101); H01R 039/38 ()

Expiration Date: 09/25/2018