Attachment structure of battery pack to power-driven tools

Details Attachment structure of battery pack to power-driven tools Attachment structure of battery pack to power-driven tools

1996-02-22

1998-06-23

Abrams, Neil

Electrical connectors

Energy cell substitution device including plural contacts or...

320 2, H01R 300

Patent

active

057696578

ABSTRACT:
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.

REFERENCES:
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patent: 4709974 (1987-12-01), Hawkins
patent: 4829226 (1989-05-01), Nakamura et al.
patent: 4835410 (1989-05-01), Bhagwat et al.
patent: 5144217 (1992-09-01), Gardner et al.
patent: 5148094 (1992-09-01), Parks et al.
patent: 5391972 (1995-02-01), Gardner et al.

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