Title:
SCREWDRIVER AND SCREW
Document Type and Number:
WIPO Patent Application WO/2021/190426
Kind Code:
A1
Abstract:
A screwdriver, comprising a screwdriver head, the screwdriver head (1) being divided into a first screwdriver head part (11) and a second screwdriver head part (12), and the first screwdriver head part (11) and the second screwdriver head part (12) overlapping to form a complete screwdriver head (1); and a tension mechanism (2), which is used for generating tension so as to drive a screw when the screwdriver head (1) is in contact with a screw recess after the first screwdriver head part (11) and the second screwdriver head part (12) overlap. A screw (7), comprising a cross-shaped recess (71), a side surface of the cross-shaped recess (71) being triangular or quadrilateral. Therefore, after the first screwdriver head part (11) and the second screwdriver head part (12) are combined and inserted into the screw (7), the first screwdriver head part (11) and the second screwdriver head part (12) can be separated by means of the tension mechanism (2). In addition, the tension mechanism (2) provides tension to clamp the screw (7), and therefore, screws made of different materials can be clamped by means of the screwdriver, thereby improving the screw fastening efficiency, and avoiding the processes of magnetizing the screwdriver and so on.
Inventors:
LI CHUNJIE (CN)
Application Number:
PCT/CN2021/081966
Publication Date:
September 30, 2021
Filing Date:
March 22, 2021
Export Citation:
Assignee:
LI CHUNJIE (CN)
International Classes:
B25B15/02
Foreign References:
US20140102265A1 | 2014-04-17 | |||
CN87215416U | 1988-12-28 | |||
CN207548617U | 2018-06-29 | |||
CN208961893U | 2019-06-11 | |||
CN2080444U | 1991-07-10 | |||
CN2084863U | 1991-09-18 | |||
CN103737532A | 2014-04-23 | |||
US6973860B2 | 2005-12-13 |
Attorney, Agent or Firm:
DING & ASSOCIATES PATENT TRADEMARK & LAW (CN)
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