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Electricity connecting device capable of establishing and disconnecting without tools

An electrical connection device and connection device technology, which is applied in the direction of conductive connection, connection, circuit, etc., can solve the problems of energy loss, strong heating of contact parts, etc., and achieve the effects of reducing transition loss, small heating, and reducing transition impedance

Inactive Publication Date: 2007-10-17
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in transition losses which lead to greater heating of the contact points and lead to energy losses

Method used

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  • Electricity connecting device capable of establishing and disconnecting without tools
  • Electricity connecting device capable of establishing and disconnecting without tools
  • Electricity connecting device capable of establishing and disconnecting without tools

Examples

Experimental program
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Embodiment Construction

[0039] In the circuit diagram shown in FIG. 1 , a consumer 11 is connected to a power source 12 via an electrical connection which can be made and disconnected without tools. The consumer is, for example, an electric drive motor of a cordless screwdriver, which is arranged in the machine housing, and the power source 12 is a replaceable energy store or accumulator, which is accommodated in the accumulator housing. The electrical connection is established by mounting the battery housing to the machine housing, and the electrical connection is separated or disconnected by detaching the battery housing from the machine housing.

[0040] Accordingly, the electrical connection device has two identical contact pairs each with two contact elements 14 , 15 . The contact element 14 of the contact pair 13 is arranged, for example, in the machine housing and the contact element 15 of the contact pair 13 is arranged in the battery housing, but this arrangement can also be reversed, the co...

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PUM

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Abstract

The present invention provides a toollessly makable and breakable electrical connection between a current source, in particular a removable energy storage device, and an electrical consumer, has at least one contact pair comprised of two contact elements, one of which is connected to the current source and one of which is connected to the consumer. In order to reduce the transition impedance in the contact pair and to reduce the current-induced heating of the contact pair, at least one contact element has a multitude of individual small-area contact points that are electrically connected in parallel. For example, the multitude of contact points is implemented in the form of fibers composed of an electrically conductive material, which are combined in bristle brush or paintbrush fashion to form a fiber brush.

Description

technical field [0001] The invention relates to an electrical connection between a power source, in particular a replaceable energy store, and a consumer which can be made and disconnected without tools, comprising at least one contact pair consisting of two contact elements, one of which One contact element is connected to the power supply and the other to the consumer. Background technique [0002] Known electrical connection devices of this type in electric hand-held power tools, such as cordless screwdrivers or cordless drills, are typically connected between the exchangeable accumulator and the electric machine by two contact contacts each having two contact elements. The two contact elements belonging to different contact pairs are arranged in a machine housing and the two other contact elements of different contact pairs are arranged in a battery housing detachable from the machine housing. In each contact pair, one of the contact elements is formed as a metal plate ...

Claims

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Application Information

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IPC IPC(8): H01R4/00
Inventor 沃尔夫·马蒂亚斯马尔桑·雷伊曼
Owner ROBERT BOSCH GMBH