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Electric drill

A technology of electric drills and housings, which is applied in portable drilling rigs, drilling/drilling equipment, manufacturing tools, etc., and can solve the problems of many parts and complicated manufacturing

Inactive Publication Date: 2011-09-07
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 disadvantage of this structure is that there are many parts used and the manufacturing is complicated.

Method used

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  • Electric drill
  • Electric drill
  • Electric drill

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Experimental program
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Embodiment Construction

[0040] Specific embodiments of the present invention are given below in conjunction with the accompanying drawings.

[0041] refer to figure 1 As shown in the figure, a partial exploded view of the electric drill of the present invention is disclosed. refer to Figure 2A , Figure 3A As shown in the figure, a partial cross-sectional view of the electric drill of the present invention is disclosed.

[0042] Electric drill of the present invention comprises: housing 15, the motor (not shown in the figure) that is used as driving element, main control switch (not shown in the figure), gear reduction mechanism, the output shaft 13 that extends out of casing, elastic member 41, switching sleeve 21 for function switching, spring 29, torque adjusting ring 25 for adjusting torque, screw cap 43, collet (not shown in the figure), work piece (not shown in the figure, such as bit ). Wherein, the gear reduction mechanism of the electric drill of the present invention includes: a gear ...

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PUM

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Abstract

The invention relates to an electric drill. The electric drill comprises a shell, a planetary gear train arranged in the shell and an output shaft, wherein the planetary gear train is provided with a rotatable annulus gear, the outer circumference surface of the annulus gear is provided with a plurality of grooves, a movable part which can move along the axial direction is arranged in the shell and the movable part can be held in the grooves of the annulus gear. The electric drill is characterized in that the electric drill also contains a switching sleeve, the switching sleeve can be adjusted to selectively limit the movable part so that the movable part can be held in the grooves or the movable part can move away the grooves along the radial direction, and the annulus gear can switch between the rotation limit state and the rotation state. The electric drill of the invention can effectively prevent the failure of drilling and simplify the production process.

Description

technical field [0001] The invention relates to an electric drill, in particular to an electric drill with screwdriver and drilling functions. Background technique [0002] The existing electric drill comprising two working modes of screwdriver and drilling has a mode switching mechanism. [0003] The working mode of the screwdriver is realized in this way. When the torque applied to the output shaft exceeds a certain value, the inner teeth of the planetary gear system rotate, thereby realizing tripping, and then realizing the function of the screwdriver. The drilling working mode of this type of electric drill is realized in this way, using a steel column or other objects to press the inner ring gear in the axial direction, so that the inner ring gear cannot rotate, thereby realizing the drilling working mode. [0004] This structure has certain defects. In the drilling mode, the torque on the inner ring gear is relatively large. Due to the influence of the manufacturing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B45/02B25B21/00B25B23/00B25B23/147
Inventor 张伟
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD