Title:
ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2019/206022
Kind Code:
A1
Abstract:
Provided is an electric tool. The electric tool comprises: a clamping device (100), used for clamping or releasing a drilling bit; an impact device (200), comprising an impact part (210) driven to impact the drilling bit and a power supply for supplying power, wherein the impact part (210) is provided with a loading position (a) and an unloading position (b), and can make a reciprocating movement between the loading position (a) and the unloading position (b), when being at the loading position (a), the impact part (210) is coupled to the power supply and can impact the drilling bit, and when being at the unloading position (b), the impact part (210) is decoupled from the power supply; and a reset mechanism (300), used for providing a reset force to keep the impact part (210) at the unloading position (b), wherein when a force transferred from the drilling bit to the impact part (210) is less than the reset force provided by the reset mechanism (300), the impact part (210) is kept at the unloading position (b). The electric tool can keep the impact part at the unloading position when the drilling bit abuts against a workpiece, thereby effectively avoiding various misoperations.
Inventors:
ZHENG XIANGGE (CN)
XIE JUFENG (CN)
XIE JUFENG (CN)
Application Number:
PCT/CN2019/083292
Publication Date:
October 31, 2019
Filing Date:
April 18, 2019
Export Citation:
Assignee:
BOSCH POWER TOOLS CHINA CO LTD (CN)
International Classes:
B25D11/00
Foreign References:
| CN101563191A | 2009-10-21 | |||
| CN1361726A | 2002-07-31 | |||
| EP3181298A1 | 2017-06-21 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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