Title:
PRECISE ELECTRIC SCREWDRIVER
Document Type and Number:
WIPO Patent Application WO/2019/105097
Kind Code:
A1
Abstract:
A precise electric screwdriver, comprising a screwdriver bit and a housing (1). A motor (2) is provided in the housing (1); the screwdriver bit is positioned in front of the housing (1); a composite mechanism for implementing switching between manual and automatic modes is provided between the screwdriver bit and the motor (2); the proximal end (42) of an output shaft (4) of the composite mechanism is a step having a larger diameter than the distal end (41); the peripheral surface of the step is formed by a group of curved surfaces; the group of curved surfaces are formed by connecting outer convex surfaces (43) and inner concave surfaces (44) spaced from each other.
Inventors:
LONG JUN (CN)
Application Number:
PCT/CN2018/104553
Publication Date:
June 06, 2019
Filing Date:
September 07, 2018
Export Citation:
Assignee:
DOLVIS INTELLIGENT TECH CO LTD (CN)
International Classes:
B25B21/00; B25F5/00; B25F5/02
Foreign References:
| CN107791188A | 2018-03-13 | |||
| CN104802117A | 2015-07-29 | |||
| CN104227632A | 2014-12-24 | |||
| CN204135965U | 2015-02-04 | |||
| JP2009142942A | 2009-07-02 | |||
| CN204546402U | 2015-08-12 | |||
| US20140318820A1 | 2014-10-30 |
Attorney, Agent or Firm:
NANJING IPLEADER INTELLECTUAL PROPERTY AGENCY FIRM (CN)
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