Title:
RATCHET WRENCH
Document Type and Number:
WIPO Patent Application WO/2023/246051
Kind Code:
A1
Abstract:
A ratchet wrench, comprising: a housing extending in an axial direction, an electric motor located inside the housing, a transmission mechanism driven by means of the electric motor, and a driving mechanism connected to the transmission mechanism. The electric motor drives the driving mechanism to operate by means of the transmission mechanism. The housing comprises a base, which is used for accommodating the electric motor, and a head housing part, which is connected to the axial front end of the base, wherein the transmission mechanism and the driving mechanism are accommodated in the head housing part. The base and the head housing part are made of different materials, and the base has a specific heat capacity larger than the specific heat capacity of the head housing part, such that the thermal conductivity of the base is better than the thermal conductivity of the head housing part, thereby solving the problem of heat generation of the electric motor. The head housing part is fixedly connected to the front end of the base by means of a bolt, such that the head housing part is reliably fixed to the base without loosening.
Inventors:
PENG XIAOHU (CN)
Application Number:
PCT/CN2022/141935
Publication Date:
December 28, 2023
Filing Date:
December 26, 2022
Export Citation:
Assignee:
JIANGSU DONGCHENG TOOLS TECH CO LTD (CN)
International Classes:
B25B13/46; B25B23/00; B25F5/02
Foreign References:
| CN115026751A | 2022-09-09 | |||
| CN104768712A | 2015-07-08 | |||
| US20120186400A1 | 2012-07-26 | |||
| CN201092021Y | 2008-07-30 | |||
| CN113001477A | 2021-06-22 |
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