Title:
ELECTRIC HAMMER
Document Type and Number:
WIPO Patent Application WO/2021/115332
Kind Code:
A1
Abstract:
An electric hammer (10), comprising: an electric motor (9); an output shaft (93) configured to mate with a working head (83); a motion conversion mechanism, comprising an intermediate shaft (3), a gear mechanism and a motion conversion member (6) sleeved on the intermediate shaft, the intermediate shaft selectively moving along the axial direction thereof to a first position, a second position and a third position; and an impact mechanism, comprising an impact member (8) for receiving power from the motion conversion member and reciprocating along an output axis. The electric hammer further comprises a support mechanism (2) for supporting the impact member to reciprocate, and a support bearing (4) for supporting the intermediate shaft, and when the intermediate shaft is in the third position, the working head only outputs the rotation, and the support bearing is in support contact with the support mechanism. Thus, by means of the cooperation between the support mechanism and the support bearing, it can be ensured that the support bearing and the support mechanism are supported together, so as to prevent the failure of the support bearing, thereby prolonging the service life of the support bearing, further prolonging the service life of an electric hammer.
Inventors:
QIU GUOFU (CN)
GU JINFA (CN)
GU JINFA (CN)
Application Number:
PCT/CN2020/134948
Publication Date:
June 17, 2021
Filing Date:
December 09, 2020
Export Citation:
Assignee:
POSITEC POWER TOOLS SUZHOU CO LTD NON SMALL ENTITY (CN)
International Classes:
B25D16/00
Foreign References:
| CN101479078A | 2009-07-08 | |||
| CN101479078A | 2009-07-08 | |||
| CN1743138A | 2006-03-08 | |||
| CN211729047U | 2020-10-23 | |||
| CN102470523A | 2012-05-23 | |||
| CN102837295A | 2012-12-26 | |||
| US20110030985A1 | 2011-02-10 |
Attorney, Agent or Firm:
SUZHOU JINHE INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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