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Motor-driven tool having locking mechanism

A locking mechanism and technology for locking components, applied in the field of motor tools

Inactive Publication Date: 2006-08-09
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is an unfavorable characteristic for some motor vehicles

Method used

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  • Motor-driven tool having locking mechanism
  • Motor-driven tool having locking mechanism
  • Motor-driven tool having locking mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] see figure 2 with 3 The power tool, shown generally at 2, is a drill-driver having a substantially cylindrical drill bit 4 having a longitudinal axis X, and an elongated handle 6 arranged about the longitudinal axis Y. The drill head 4 is pivotably arranged on a handle 6 and rotates about an axis Z relative to the handle 6 . The handle 8 is formed by a first half shell 8 and a second half shell 10, and the first half shell 8 and the second half shell 10 are combined by a plurality of screws not shown in the figure. The drilling head 4 is formed by a third half shell 12 and a fourth half shell 14, and the third half shell 12 and the fourth half shell 14 are combined by a plurality of screws not shown in the figure.

[0032] see Figure 4 with 6 , Drill head 4 contains electric motor 16 and has the transmission gearbox not shown in the figure of output shaft 20. The electric motor 16 and gearbox reside within the drill head 4 . The front end of the drill head 4 con...

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PUM

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Abstract

A power tool comprising: a first body; a second body connected to the first body; and a locking mechansim; wherein one body is moveable with respect to the other body, and the locking mechanism is capable of locking the movement of the one body with respect to the other body, the locking mechanism comprising a two part system having a first part comprising a locking member and a second part comprising a receiving member , whereby engagement between the first part and the second part locks the first body and second body against movement with respect to each other, and wherein one part is moveable with respect to the other part between a first position and a second position, such that the first part and the second part are engaged when that one part is in the first position, and the first part and the second part are disengaged when that one part is in the second position, characterised in that at least one of the parts is shaped to cause take up of play between the two parts of the locking mechanism when that one part moves into the first position.

Description

technical field [0001] The present invention relates to power tools, and more particularly to power tools that lock and unlock movement of one part of the power tool relative to another part of the power tool. Background technique [0002] An example of a motorized tool is shown in figure 1 . The power tool is a dual-purpose drill-driver comprising a body having a drill head and a handle attached to the drill head at approximately right angles. The drill head houses the electric motor and gearbox, and the combination of the handle and drill head forms a conventional pistol grip for the user to hold in his hand. The handle contains a variable speed trigger switch for low speed rotation output in screw driving mode and high speed rotation output in drilling mode. As long as the workpiece is easily accessible, the drill-driver configuration is well suited for both drilling and screwdriving. However, if drilling or tightening screws is to be done in dead corners or tricky lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25D17/08B25F5/02
CPCB25F5/02
Inventor K·Y·吴
Owner BLACK & DECKER INC