Makita Corporation

Takahide Kawakami

Youichi Kato

Norio Isogai

Katsumi Tozawa

Kazuma Oshima

Toshio Matsumoto

Masayoshi Kondo

Norio Isoqai

Takanori Kanou

The cord guard 1 having a cylindrical hollow passage 5 into which a cord 3 can be inserted and a flange portion 11 at one end which is retained by a cord guard retainer 9 in a half housing 7. The cord guard 1 further having a tapering wall portion 13 the wall thickness of which is gradually reduced from the flange portion 11 toward the free end, a constant wall portion 15 extending in series from the tapering wall portion 13 further toward the free end with its wall thickness constant, and a thicker wall ring flange 17 provided along the periphery of the free end of the constant wall portion 15. The wall thickness and the length of the constant wall portion 15 are determined such that the constant wall portion 15 is provided with a bending strength low enough that it is flexed smoothly together with the cord 3 when a load approximately equal to the weight of the cord 3 is applied as a bending load.

Cord guard

Battery pack

A simple attachment structure of the present invention ensures favorable connection of a battery pack with a battery holder in a power-driven tool over a long time period without causing any defective contact. A pair of side slots (47a,47b) as well as a pair of insertion slots (48a,48b) are formed in a connection surface (49) of an upper battery case (20) of a battery pack (10). Electrode terminal assemblies (41a,41b) are set in the side slots (47a,47b) and the insertion slots (48a,48b) to be exposed on the two side faces thereof. A positive spring terminal (64a) and a negative spring terminal (64b) are integrally joined with and supported by a terminal base 61 of a battery holder (60). Each spring terminal (64a,64b) has an insertion element (66a,66b) formed to have a width a little greater than the width of the insertion slot (48a,48b). When the spring terminals (64a,64b) are inserted into the insertion slots (48a,48b), the elasticity of the spring terminals (64a,64b) presses the insertion elements (66a,66b) thereof against the electrode terminal assemblies (41a,41b). This realizes electrical connection of the spring terminals (64a,64b) with the electrode terminal assemblies (41a,41b) and enables the battery pack (10) to be integrally joined with the battery holder (60) of the power-driven tool.

Attachment structure of battery pack to power-driven tools

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Anjo, Japan

Takahide Kawakami