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Title:
CLUTCH DEVICE, DRILL CHUCK, POWER TOOL, AND BIDIRECTIONAL ROTATION METHOD OF DRILL CHUCK
Document Type and Number:
WIPO Patent Application WO/2020/220420
Kind Code:
A1
Abstract:
Disclosed are a clutch device, a drill chuck, a power tool, and a bidirectional rotation method of the drill chuck. The clutch device comprises a return elastic member (216), a transmission assembly and a rotating portion (203), wherein the transmission assembly comprises at least two engagement portions which are arranged opposite each other; the engagement between the two engagement portions enables a front body (101) and a rear body (100) to rotate synchronously; the rotation of the rotating portion (203) in a first direction enables the return elastic member (216) to be compressed, such that the two engagement portions are disconnected; and the rotation of the rotating portion (203) in a second direction enables the compressed return elastic member (216) to be reset, such that the two engagement portions are engaged. The drill chuck comprises a front body (101), a rear body (100), a clamping jaw (102) and the clutch device; and the power tool comprises a driving shaft and the drill chuck. The device can guarantee the mounting of a drilling tool on a drill chuck in a more stable manner, thereby avoiding the occurrence of loosening or detachment, and enabling the drilling tool to be replaced in a more convenient manner.

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Inventors:
LIU YAOTING (CN)
Application Number:
PCT/CN2019/088564
Publication Date:
November 05, 2020
Filing Date:
May 27, 2019
Export Citation:
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Assignee:
LIU YAOTING (CN)
International Classes:
B23B31/12; B23B47/00; B23B51/12
Foreign References:
CN109940200A2019-06-28
CN208662858U2019-03-29
CN108971536A2018-12-11
US6572310B22003-06-03
US20050023776A12005-02-03
CN102343447A2012-02-08
Other References:
See also references of EP 3892406A4
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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