Title:
SCREWDRIVER
Document Type and Number:
WIPO Patent Application WO/2018/121722
Kind Code:
A1
Abstract:
A screwdriver, comprising a shell (100), a battery (31) received in the shell (100), a circuit board (32), and an execution component (4) driven by the battery (31) and the circuit board (32); the execution component (4) comprises a motor (41), a reduction gear set (42), and an output shaft (401) which is located at the front end of the screwdriver and driven by the reduction gear set (42); the execution component (4) is elastically preset and when under pressure moves relative to the shell (100); the screwdriver further comprising a switch (34), the switch constitutes a part of a working circuit of the screwdriver and can be triggered in the process of the relative motion. Due to the design in which the execution component is elastically preset and when under pressure the execution component can trigger the working circuit of the screwdriver, designing and assembling and pressure-triggered starting function can be rapidly achieved; and the screwdriver is more compact and miniaturized.
Inventors:
CHEN FENG (CN)
ZHOU RUOBING (CN)
ZHOU RUOBING (CN)
Application Number:
PCT/CN2017/119759
Publication Date:
July 05, 2018
Filing Date:
December 29, 2017
Export Citation:
Assignee:
BOSCH POWER TOOLS CHINA CO LTD (CN)
International Classes:
B25B21/00; B25B23/00
Foreign References:
| CN107378848A | 2017-11-24 | |||
| CN102825569A | 2012-12-19 | |||
| CN1494471A | 2004-05-05 | |||
| CN85108242A | 1986-06-10 | |||
| CN201482992U | 2010-05-26 | |||
| US5044234A | 1991-09-03 |
Attorney, Agent or Firm:
NTD UNIVATION INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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