Electric drill with driving mode switching

A driving mode and electric drill technology, which is applied in the manufacture of tools, portable motorized devices, etc., can solve the problems of many parts in the transmission link of mode switching, inconvenient manufacturing and assembly, and large running resistance.

Active Publication Date: 2014-08-20
NANJING JIUCHI ELECTROMECHANICAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that the typical structure of the electric drill with the driving mode switching function either has the problem of a large number of parts in the mode switching transmission link, which not only easily affects its performance due to accumulated errors, but also is not easy to manufacture and assemble; or the running resistance is relatively large

Method used

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  • Electric drill with driving mode switching
  • Electric drill with driving mode switching

Examples

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Embodiment 1

[0018] This embodiment has an electric drill with driving mode switching such as figure 1As shown, it includes a motor 1 placed inside the casing, a rotatable function switching cup 9 and a torque regulating cup 16 set outside the casing. The motor 1 is connected to the output shaft 3 through the two-stage planetary gear reduction mechanism 4 installed in the gearbox 2, and the output shaft 3 is engaged with the second stage of the inner ring gear 5 through the special-shaped hole in the center of the planetary gear train ring 4-1. The shaft centers of the planetary gears 4-2 form a synchronous rotation relationship, and the static impact ring 11 with end teeth and the fixed block 14 with evenly spaced end bosses 14-1 are fixedly installed in the gearbox 2. The function switching cup 9 is composed of a gear ring 9-5 and a ring constraint ring 9-3 connected by two side wing plates 9-4 extending towards the output shaft direction. The inner hole of the gear ring 9-5 has a 7 The...

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Abstract

The invention relates to an electric drill with driving mode switching, belonging to the technical field of electric tools. The electric drill includes a motor, a function switching cup and a torque adjusting cup; the motor is connected to the output shaft through a reduction mechanism; The axial pressure adjustment mechanism driven by the cup is connected; when the function switching cup is in the first switching position, the end teeth of the dynamic and static impact rings are separated, and the locking ring constitutes an axial constraint on the mating piece; when it is in the second switching position, the dynamic and static impact rings are separated. 1. The end teeth of the static impact ring keep separated, and the locking ring loses the axial restraint on the fitting; when it is in the third switching position, the end teeth of the dynamic and static impact rings fit together, and the locking ring constitutes the shaft of the fitting. to constraints. The invention can not only reduce manufacturing and assembly costs, but also help to avoid quality problems caused by accumulated tolerances, and the operation is more convenient.

Description

technical field [0001] The invention relates to an electric drill, in particular to an electric drill with driving mode switching, and belongs to the technical field of electric tools. Background technique [0002] A hand-held electric drill capable of drilling, screwing, and impact mode switching is a commonly used electric tool that has been widely used. [0003] The early US patent No. US6142242 discloses the following technical solution of this electric drill (note: for ease of interpretation, the part numbers corresponding to the drawings of the US6142242 embodiment are in parentheses in this paragraph): a percussion drill, including a motor (3 ) of the main body shell (2); the planetary gear reduction mechanism (10) installed in the main body shell, the planetary gear reduction mechanism is provided with a rotatable internal gear (13), an input end that can be installed on the motor, and a A cam mechanism (17, 18, 19) that transmits rotational power to the output of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F3/00
Inventor 吹拔正敏陆传洋
Owner NANJING JIUCHI ELECTROMECHANICAL IND
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