US 2019/0160645 A1Published application

Power tool

AssigneeNanjing Chervon Industry Co., Ltd.

InventorsMasatoshi Fukinuki, Yasheng Chen, Wei Lu

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Abstract

A power tool, including an output member, a motor, a housing, a transmission device, and a shifting device. The shifting device includes a first shifting element, a second shifting element, an operation member, and a connecting member. The first shifting element is capable of switching between a first position and a second position, and the second shifting element is capable of switching between a third position and a fourth position. When sliding relative to the housing, the operation member drives the first shifting element to switch between the first position and the second position, and a position of the second shifting element remains unchanged. When the operation member rotates relative to the housing, the connecting member drives the second shifting element to switch between the third position and the fourth position, and a position of the first shifting element remains unchanged.

Claims20

Dependent claims

A power tool, comprising:

an output member configured to output power;
a motor configured to drive the output member;
a housing configured to accommodate the motor;
a transmission device configured to transmit power between the motor and the output member and having at least four transmission states in which the output member is capable of outputting different power;
and
a shifting device configured to drive the transmission device to switch between different ones of the at least four transmission states;
wherein the shifting device comprises:
a first shifting element capable of switching between at least a first position and a second position in which the transmission device is in respective first and second ones of the at least four transmission states;
a second shifting element capable of switching between at least a third position and a fourth position in which the transmission device is in respective third and fourth ones of the at least four transmission states;
an operation member operated by a user, wherein the operation member can slide relative to the housing in a first straight line and rotate relative to the housing about a central axis;
and
a connecting member for connecting the operation member to the second shifting element;
wherein, when the operation member slides relative to the housing, the operation member drives the first shifting element to switch between the first position and the second position whereupon a position of the second shifting element remains unchanged and, when the operation member rotates relative to the housing, the connecting member drives the second shifting element to switch between the third position and the fourth position whereupon a position of the first shifting element remains unchanged.

10 more elements

A power tool, comprising:

an output shaft configured to output power;
a motor comprising or connected to a drive shaft;
a housing configured to accommodate the motor;
a transmission device configured to transmit power between the output shaft and the drive shaft and having at least two different transmission states in which the output shaft outputs power at different rotation speed;
and
a shifting device configured to drive the transmission device to switch between a first one of the at least two transmission states and a second one of the at least two transmission states;
wherein the transmission device comprises a first movable member disposed around a central axis and a device housing formed with an accommodation cavity used for accommodating the first movable member;
wherein the first movable member and the device housing constitute a slidable connection in a direction parallel to the central axis, the shifting device comprises a first shifting element capable of sliding relative to the device housing and driving the first movable member to slide when moving relative to the device housing, an operation member operated by a user and capable of moving relative to the housing, and the operation member is further formed with or connected to a first driving structure comprising a first driving inclined surface in contact with the first shifting element and driving the first shifting element to move when the operation member moves relative to the housing.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/144,283Filed 27 Sep 2018
Priority: CN 201711224435.429 Nov 2017
Published: 30 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B25F 5/001
Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for:…
B23B 45/008
Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor: gear boxes, clutches, bearings, feeding mechanisms or like…
B25B 21/00
Portable power-driven screw or nut setting or loosening tools
B25B 23/141
Arrangement of torque limiters or torque indicators in wrenches or screwdrivers: mechanical overload release couplings