Power tool

Patent metadata

Field	Value
Publication number	US-2016325425-A1
Application number	US-201615211825-A
Country	US
Kind code	A1
Filing date	Jul 15, 2016
Priority date	Aug 6, 2011
Publication date	Nov 10, 2016
Grant date	—

Abstract

A power tool, comprising: a housing; a motor arranged in the housing; an output shaft having a through hole configured to receive a first tool bit of a plurality of tool bits, a rotary force output from the motor is transmittable to the output shaft; a cartridge comprises a plurality of tool chambers configured to receive the plurality of tool bits; a connecting shaft configured to move between a working status wherein the connecting shaft is coupled with the first tool bit in a first tool chamber which the connecting shaft passing through, and a release status wherein the connecting shaft is separated from the first tool chamber; a restrictor being configured to move between a first position and a second position; and a slider is configured to move along an axial direction to cause the restrictor to be moved from the first position to the second position.

First claim

1 . A power tool, comprising:
a housing; a motor arranged in the housing, the motor being configured to output a rotary force; an output shaft having a through hole configured to receive a first tool bit of a plurality of tool bits, and the output shaft is configured to drive the first tool bit of a plurality of tool bits rotating, the rotary force output from the motor is transmittable to the output shaft; a cartridge arranged in the housing, the cartridge comprising a plurality of tool chambers configured to receive the plurality of tool bits; a connecting shaft configured to move between a working status wherein the connecting shaft is coupled with the first tool bit of a plurality of tool bits in a first tool chamber of the plurality of tool chambers which the connecting shaft passing through, and a release status wherein the connecting shaft is separated from the first tool chamber of the plurality of tool chambers; a restrictor arranged between the housing and the connecting shaft, the restrictor being configured to move between a first position and a second position; and a slider coupled with the housing, the restrictor and the connecting shaft, wherein the slider is configured to move along an axial direction of the connecting shaft to cause the restrictor to be moved from the first position to the second position, the restrictor is configured to limit the movement of the connecting shaft in a direction away from the output shaft if the restrictor is in the first position, and the restrictor is configured to allow the connecting shaft to move in a direction away from the output shaft so that the connecting shaft is located at the release status if the restrictor is in the second position.

2 . The power tool according to claim 1 , wherein the slider is configured to drive the connecting shaft moving between the working status and the release status based on the movement of the slider.

3 . The power tool according to claim 2 , wherein the slider is configure to move along an axial direction of the connecting shaft to cause the connecting shaft to move axially.

4 . The power tool according to claim 1 , wherein the slider is provided with a release portion against the restrictor; wherein the release portion drives the restrictor to move from the first position to the second position.

5 . The power tool according to claim 1 , wherein the power tool further comprising an elastic member resisting against the restrictor towards the first position, the elastic member is configured as a torsional spring.

6 . The power tool according to claim 1 , wherein one part of the cartridge is received in the housing, and the other part of the cartridge is covered by the slider and exposed along with the axial movement of the slider.

7 . The power tool according to claim 1 , wherein the power tool further comprising a transmission arranged between the motor and the output shaft, the connecting shaft is one part of the transmission, the transmission being configured to transmit the rotary force output by the motor to the output shaft.

8 . The power tool according to claim 7 , wherein the housing comprises a motor portion housing the motor and a transmission portion housing the transmission, wherein the slider overlaps at least part of the motor portion and the transmission portion.

9 . A power tool, comprising:
a housing; a motor arranged in the housing, the motor being configured to output a rotary force; an output shaft having a through hole configured to receive a first tool bit of a plurality of tool bits, and the output shaft is configured to drive the first tool bit of a plurality of tool bits rotating, the rotary force output from the motor is transmittable to the output shaft; a cartridge arranged in the housing, the cartridge comprising a plurality of tool chambers configured to receive the plurality of tool bits; a connecting shaft configured to move between a working status wherein the connecting shaft is coupled with the first tool bit of a plurality of tool bits in a first tool chamber of the plurality of tool chambers which the connecting shaft passing through, and a release status wherein the connecting shaft is separated from the first tool chamber of the plurality of tool chambers; a restrictor arranged between the housing and the connecting shaft, the restrictor being configured to move between a first position and a second position; and a slider coupled with the housing, the restrictor and the connecting shaft, wherein the slider is configured to move along a first direction to cause the restrictor to be moved from the first position to the second position, and move together with the connecting shaft along the first direction to cause the connecting shaft to move from the working status to the release status, the restrictor is configured to limit the movement of the connecting shaft in a direction away from the output shaft if the restrictor is in the first position, and the restrictor is configured to allow the connecting shaft to move in a direction away from the output shaft so that the connecting shaft is located at the release status if the restrictor is in the second position.

10 . The power tool according to claim 10 , wherein the slider is configure to move along an axial direction of the connecting shaft.

11 . The power tool according to claim 1 , wherein one part of the cartridge is received in the housing, and the other part of the cartridge is covered by the slider and exposed along with the axial movement of the slider.

12 . A power tool, comprising:
a housing; a motor arranged in the housing, the motor being configured to output a rotary force; an output shaft having a through hole configured to receive a first tool bit of a plurality of tool bits, and the output shaft is configured to drive the first tool bit of a plurality of tool bits rotating, the rotary force output from the motor is transmittable to the output shaft; a cartridge arranged in the housing, the cartridge comprising a plurality of tool chambers configured to receive the plurality of tool bits; a connecting shaft configured to move between a working status wherein the connecting shaft is coupled with the first tool bit of a plurality of tool bits in a first tool chamber of the plurality of tool chambers which the connecting shaft passing through, and a release status wherein the connecting shaft is separated from the first tool chamber of the plurality of tool chambers; a slider coupled with the housing and the connecting shaft,
wherein
the slider is configured to move axially relative to the connecting shaft, and then to move together with the connecting shaft relative to the housing to cause the connecting shaft to move from the working status to the release status.

13 . The power tool according to claim 12 , wherein the power tool further comprising
a restrictor arranged between the housing and the connecting shaft, the restrictor being configured to move between a first position and a second position; the restrictor is configured to limit the movement of the connecting shaft in a direction away from the output shaft if the restrictor is in the first position, the restrictor is configured to allow the connecting shaft to move in a direction away from the output shaft so that the connecting shaft is located at the release status if the restrictor is in the second position.

14 . The power tool according to claim 13 , wherein the slider coupled with the restrictor, and the slider moves relative to the connecting shaft to cause the restrictor to be moved from the first position to the second position.

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Zhang Shisong
• Zhong Hongfeng
• Pang Xiaoli
• Xu Jingtao
• Andriolo Paolo
• Wang Kelvin
• Chen Zhi

Classifications

• B25D2250/111

  Bits, i.e. inserts or attachments for hammer, chisel, pick · CPC title

• Y10T483/1798

  including means to project tool from matrix · CPC title

• B25B21/00

  Portable power-driven screw or nut setting or loosening tools; (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; {for mounting or dismounting wheels B60B29/006}); Attachments for drilling apparatus serving the same purpose (machines B23P19/06) · CPC title

• B25D16/00

  Portable percussive machines with superimposed rotation {, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit (combined percussion and rotary drilling adapted for earth drilling E21B6/00)} · CPC title

• B25F1/04

  wherein the elements are brought into working positions by a pivoting or sliding movement · CPC title