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Power tool

A power tool and drive shaft technology, applied in the field of power tools, can solve the problems of complex structure, small holding surface, inconvenient operation, etc., and achieve the effects of safe and convenient operation, large holding surface and simple structure

Inactive Publication Date: 2012-07-18
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned collet has two sleeves, the structure is complex, and the gripping surface of each sleeve is small, the grip is laborious, and the operation is inconvenient; when the manual and automatic elastic chucks are tightened, the two sleeves are displaced from each other, and the two The junction of the sleeve is easy to hurt the operator's hand

Method used

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Embodiment Construction

[0071] The present invention is preferred embodiment with electric drill. The electric drill has a casing 15 , a drive shaft 20 arranged in the casing, and a collet 1 installed on the drive shaft 20 .

[0072] refer to Figure 1 to Figure 5 As shown, in the first preferred embodiment of the present invention, the collet 1 has a second sleeve 2 , a central body 3 , jaws 4 and a nut 5 . The central body 3 is a central body with a front part 6 and a rear part 7 . In the front part 6 an axial hole 8 is formed, the diameter of which is larger than the maximum diameter of the tool shank held by the collet 1 . A columnar threaded hole 9 of standard size is formed in the rear part 7, and the threaded hole 9 cooperates with a columnar drive shaft 20 on the electric drill. The threaded hole 9 can also be a tapered hole of a standard size for matching with a tapered drive shaft 20 .

[0073] Three channels 22 arranged at an angle of 120° to each other are formed on the central body 3...

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Abstract

The invention discloses a power tool, comprising a casing, a driving shaft which is arranged in the casing, and a chuck which is connected on the driving shaft and comprises a central body with a head part and a tail part. The tail part is used for being matched with the driving shaft to cause the central body to rotate along with the driving shaft, and the head part comprises an axial hole and aplurality of channels which are arranged at certain angles and intersect with the axial hole, a plurality of holding jaws are arranged in each channel in a sliding way, nuts are rotatablely arranged on the central body by screw-thread fit with the holding jaws, and the rotation of the nuts drives the holding jaws to move axially in the channels; the chuck is provided with only one sleeve which reciprocates axially between a first position and a second position, when the sleeve is in the first position, the nuts can rotate relatively to the casing, and when the sleeve is in the second position, the nuts can not rotate relatively to the casing. As the chuck is provided with only one sleeve, the structure is simple, and as the holding area of the sleeve is relatively large, the holding saveseffort relatively and the operation is safe and convenient.

Description

technical field [0001] The invention relates to a power tool, in particular to a drill or screwdriver tool with a quick release chuck. Background technique [0002] Traditional drill or screwdriver tools have a casing, a drive shaft arranged on the casing, and a collet connected to the drive shaft, and the collet is used to clamp the tool head. [0003] U.S. Patent No. 6,073,939 discloses a drill or screwdriver tool with a quick release chuck, with a casing and a rotatable drive shaft, the chuck is connected to the drive shaft, and the chuck includes a head and a tail The central body, the tail is set to cooperate with the drive shaft so that the central body rotates with the drive shaft, the head includes an axial hole and a number of channels that are arranged at an angle and intersect with the axial hole, and several clips Jaws are slidably located in each channel, each jaw includes a jaw face formed on one side and threads formed on the opposite side, nuts are rotatably...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B31/165B23B31/10B23B31/38B25B23/157F16D43/20
Inventor 顾育明张士松
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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