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Power tool

A technology of power tools and moving parts, applied in the field of hand-held power tools, can solve the problems of affecting work efficiency, loose tools, cumbersome steps, etc., and achieve the effect of ensuring stability and avoiding looseness

Active Publication Date: 2015-04-22
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the axial compressive force is provided by the elastic force of the spring, when the external load is large, the axially downward external force exceeds the axially upward compressive force that the spring can provide, which will make the solid element and the locking After the mechanism presses down on the spring, the shaft moves downward to a certain extent, resulting in a gap between the fastening element and the tool, which makes the tool loose, and then slips, which affects work efficiency
In addition, the quick clamping mechanism of the power tool requires a large-sized wrench, and the wrench needs to be rotated when releasing or clamping the fastening element, and the steps are cumbersome

Method used

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specific Embodiment approach 1

[0098] The power tool involved in this embodiment is specifically a swing-type power tool, also known as a multi-function machine. However, the present invention is not limited to an oscillating power tool, and may also be a rotary grinding power tool, such as a sander or an angle grinder.

[0099] see figure 1 , a power tool, specifically a multifunctional machine 100, which includes a longitudinally extending casing 1 connected to the front end of the casing 1 (with figure 1 The middle left side is defined as the front end) head shell 2 and the output shaft 3 extending from the head shell 2 . Wherein, a motor (not shown) is arranged in the casing 1 , and a switch 4 is provided on the casing 1 to control the turning on or off of the motor. The head shell 2 is connected with the shell 1 and along the figure 1 The horizontal portion 21 arranged in the horizontal direction and the vertical portion 22 extending downwards substantially vertically from the end of the horizontal ...

specific Embodiment approach 2

[0128] Combine below Figure 13 and Figure 14 , the second embodiment of the present invention will be described. This embodiment specifically relates to a multi-function machine, which differs from the multi-function machine 100 in the first embodiment in its drive mechanism 10 , and other parts are the same as those in the first embodiment. The driving mechanism 10 includes a driving part 11 , a driven part 12 matched with the driving part 11 and a first elastic part 13 . The multifunctional machine also includes an output shaft 14 , a fixing part 15 , a working head 16 mounted on the output shaft 14 through the fixing part 15 , and a locking mechanism 17 accommodated in the driven part 12 . The output shaft 14 is provided with a shaft seat 141 , the driving element 11 is installed in the shaft seat 141 , and the driven element 12 is arranged axially above the driving element 11 . A receiving portion 142 is provided at the end of the shaft seat 141 , and the working head...

specific Embodiment approach 3

[0136] In the above first and second embodiments, the active part of the driving mechanism rotates around the axis of the output shaft, so that the driven part moves axially, and the driving mechanism moves between the first matching position and the second matching position. However, the present invention is not limited to the above-mentioned structure, and the driving mechanism of the present invention may also adopt other structures, such as the active member rotating around a straight line perpendicular to the axis perpendicular to the output shaft. Combine below Figure 15 to Figure 19 , the third embodiment of the present invention will be described.

[0137] Such as Figure 15 and Figure 17 As shown, this embodiment is specifically a multifunctional machine 900, which includes a head shell 90, an output shaft 91 installed in the head shell 90, and a locking mechanism 92, and drives the locking mechanism 92 between the locking position and the release position. A mov...

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Abstract

The invention discloses a power tool with a quick locking mechanism. The power tool comprises a casing, an output shaft, a fixing piece, the locking mechanism and a driving mechanism, wherein the output shaft is used for mounting a working head and driving the working head to operate, and the output shaft is provided with a bearing part extending out of the casing; the fixing piece is used for fixing the working head on the bearing part of the output shaft; the locking mechanism is used for locking or releasing the fixing piece; the driving mechanism is used for enabling the locking mechanism to be moved between a locking position and a releasing position, and in the locking position, the fixing piece is clamped on the output shaft; and in the releasing position, the fixing piece can be dismantled from the output shaft. In the locking position, the distance between the locking mechanism and the bearing part of the output shaft remains the same, so that the fixing piece is prevented from loosening, and the working head is stably fixed accordingly.

Description

technical field [0001] The invention relates to a power tool, especially a hand-held power tool. Background technique [0002] The multi-function machine is a common hand-held oscillating power tool in the industry. Its working principle is that the output shaft oscillates around its own axis. Therefore, when the user installs different working heads on the free end of the output shaft, such as straight saw blades, circular saw blades, triangular abrasive discs, and shovel scrapers, a variety of different operating functions can be realized, such as sawing, cutting, etc. , grinding, scraping, etc., to suit different work needs. [0003] Chinese Publication Patent No. CN100574993C discloses a swing power tool with a quick clamping mechanism. The oscillating power tool comprises: a working arbor for driving a tool fastenable between a fastening element and a retaining portion on the tool end of the working arbor; A moving device that slides between a released position and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F3/00B25F5/00
Inventor 张士松庞晓丽徐静涛吴宇
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD