WO2022178661A1 - Power tool having an anti-vibration assembly - Google Patents

Power tool having an anti-vibration assembly Download PDF

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Publication number
WO2022178661A1
WO2022178661A1 PCT/CN2021/077418 CN2021077418W WO2022178661A1 WO 2022178661 A1 WO2022178661 A1 WO 2022178661A1 CN 2021077418 W CN2021077418 W CN 2021077418W WO 2022178661 A1 WO2022178661 A1 WO 2022178661A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer housing
power tool
vibration member
vibration
tool according
Prior art date
Application number
PCT/CN2021/077418
Other languages
English (en)
French (fr)
Inventor
Edwin Chi Ngai CHAN
Xiaoping Qiu
Zhanbiao XUE
Original Assignee
Techtronic Cordless Gp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Techtronic Cordless Gp filed Critical Techtronic Cordless Gp
Priority to EP21830378.2A priority Critical patent/EP4297933A1/en
Priority to PCT/CN2021/077418 priority patent/WO2022178661A1/en
Priority to CN202190000143.6U priority patent/CN216883814U/zh
Publication of WO2022178661A1 publication Critical patent/WO2022178661A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means

Definitions

  • the present invention relates to a power tool having an anti-vibration assembly to reduce vibration transmission to its outer housing.
  • a power tool comprising:
  • an inner housing at least partially disposed within the outer housing and configured to receive a portion of the supporting unit
  • the first anti-vibration member extends between the supporting unit and the outer housing in a direction substantially perpendicular to an axial direction of the output shaft.
  • the inner housing has an opening through which the first anti-vibration member passes so that the first anti-vibration member extends between the supporting unit and the outer housing
  • the first anti-vibration member is movable between the outer housing and the supporting unit.
  • the supporting unit is a bushing.
  • the supporting unit comprises a bearing and a bushing sleeved on and coupled to the bushing
  • the first anti-vibration member is independent from both the supporting unit and the outer housing.
  • the first anti-vibration member is formed by overmolding integrally with at least a portion of the outer housing.
  • the first anti-vibration member is formed with a groove to engage with at least a portion of the outer housing and/or the supporting unit.
  • the first anti-vibration member is an elastomeric element.
  • the anti-vibration assembly comprises a pair of said first anti-vibration members symmetrically disposed on opposite sides of the supporting unit.
  • the first anti-vibration member is a rubber pin.
  • the anti-vibration assembly further comprises a second anti-vibration member disposed between with the inner housing and the outer housing at a location around the output shaft.
  • the anti-vibration assembly further comprises a third anti-vibration member disposed between the inner housing and the outer housing around the motor.
  • Figure 1 is a perspective view of a first embodiment showing a power tool containing an anti-vibration assembly and an inner housing of the power tool, with an outer housing hidden, in accordance with the present invention.
  • Figure 2 is a cross sectional view along the plane A-A’ of the power tool of Figure 1 with an outer housing.
  • Figure 3 is an aggregated right view of the power tool of Figure 1 with a half piece of outer housing.
  • Figure 4 is a cross sectional view of a second embodiment showing a power tool containing an anti-vibration assembly and an inner housing of the power tool in accordance with the present invention.
  • the present invention pertains to a power tool which is provided with an anti-vibration assembly to effectively reduce transmission of vibration in the power tool.
  • the power tool is a portable power tool that has an inner housing 100, an output shaft 200 driven by a motor (not shown) to perform an operation on a work piece (not shown) , a bearing 310 that is partially supported by the inner housing 100 and bears the output shaft 200.
  • the bearing 310 is for example a needle bearing.
  • the portable power tool also has an outer housing 700 (shown in Figures 2 and 3) to receive at least a portion of the inner housing 100. A portion of the outer housing 700 is configured as a handle portion (not shown) that can be gripped by a user.
  • the motor and the output shaft 200 generate vibration when the power tool is in operation. Particularly, the vibration is caused by the output shaft and moving components (not shown) near the output shaft. The vibration is transmitted to the inner housing 100 which is in indirect contact with the output shaft. The vibration then could be transmitted to the outer housing 700 which receives the inner housing 100.
  • the anti-vibration assembly further contains a third anti-vibration member 600 disposed between and in contact with the inner housing 100 and the outer housing 700 so as to reduce vibration transmission from the inner housing 100 to the outer housing 700.
  • the third anti-vibration member 600 contacts with the second end of the inner housing 100 via a first intermediate member 610.
  • the third-anti-vibration member 600 is located around the motor.
  • the third anti-vibration member 600 may be in direct contact with the second end of the inner housing 100.
  • the third anti-vibration member 600 physically isolates the inner housing 100 and the outer housing 700 and reduces vibration transmission therebetween.
  • the shape of the third anti-vibration member 500 may be tailored to at least partially fit in the space between the outer housing 700 and the inner housing 100 and at the second end.
  • first end of the inner housing and the “second end of the inner housing” are termed only for the purpose to distinguish one another, and may be or may not be a distal end of the inner housing.
  • the supporting unit is a flanged bushing 320 that is partially supported by the inner housing 100 and bears the output shaft 200.
  • the anti-vibration assembly comprises a first anti-vibration member 420, for example a rubber ring, adapted to be engaged with at least a portion of the flanged bushing 320.
  • the first anti-vibration member 420 is provided with a groove in one side to receive a flange of the flanged bushing 320, and an opposite side of the first anti-vibration member 420 contacts with the inner wall of the outer housing 700.
  • the first anti-vibration member can be formed integrally with the bushing.
  • the outer housing 700 may be provided with a groove or a socket 710 to receive an end of each first anti-vibration member 420.
  • the first anti-vibration member is shown as a rubber pin or a rubber ring independent from the bearing and the outer housing.
  • the first anti-vibration member could also be a coil spring.
  • the first anti-vibration member could be made using overmolding and as part of an outer housing.
  • the power tool is a multi-tool.
  • skilled persons in the art should realize that other types of power tools can also be applied with the anti-vibration structure of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Portable Power Tools In General (AREA)
PCT/CN2021/077418 2021-02-23 2021-02-23 Power tool having an anti-vibration assembly WO2022178661A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP21830378.2A EP4297933A1 (en) 2021-02-23 2021-02-23 Power tool having an anti-vibration assembly
PCT/CN2021/077418 WO2022178661A1 (en) 2021-02-23 2021-02-23 Power tool having an anti-vibration assembly
CN202190000143.6U CN216883814U (zh) 2021-02-23 2021-02-23 具有防振组件的动力工具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/077418 WO2022178661A1 (en) 2021-02-23 2021-02-23 Power tool having an anti-vibration assembly

Publications (1)

Publication Number Publication Date
WO2022178661A1 true WO2022178661A1 (en) 2022-09-01

Family

ID=82210679

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/077418 WO2022178661A1 (en) 2021-02-23 2021-02-23 Power tool having an anti-vibration assembly

Country Status (3)

Country Link
EP (1) EP4297933A1 (zh)
CN (1) CN216883814U (zh)
WO (1) WO2022178661A1 (zh)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729194A (en) * 1985-05-25 1988-03-08 Festo Kg Balanced orbital sander/grinder
JP2004249421A (ja) * 2003-02-21 2004-09-09 Hitachi Koki Co Ltd 携帯用電動工具
CN201735891U (zh) * 2009-02-27 2011-02-09 株式会社牧田 电动工具的减速机构
CN204172000U (zh) * 2014-11-05 2015-02-25 浙江博大实业有限公司 充电式多功能机
JP2015104772A (ja) * 2013-11-29 2015-06-08 日立工機株式会社 動力工具
JP2015199167A (ja) * 2014-04-08 2015-11-12 株式会社マキタ 電動工具
CN105856142A (zh) * 2015-02-09 2016-08-17 松下知识产权经营株式会社 冲击旋转工具
CN205497394U (zh) * 2015-02-15 2016-08-24 苏州宝时得电动工具有限公司 动力工具
CN210383693U (zh) * 2019-06-19 2020-04-24 东莞市至拙电器科技有限公司 一种厨师机

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729194A (en) * 1985-05-25 1988-03-08 Festo Kg Balanced orbital sander/grinder
JP2004249421A (ja) * 2003-02-21 2004-09-09 Hitachi Koki Co Ltd 携帯用電動工具
CN201735891U (zh) * 2009-02-27 2011-02-09 株式会社牧田 电动工具的减速机构
JP2015104772A (ja) * 2013-11-29 2015-06-08 日立工機株式会社 動力工具
JP2015199167A (ja) * 2014-04-08 2015-11-12 株式会社マキタ 電動工具
CN204172000U (zh) * 2014-11-05 2015-02-25 浙江博大实业有限公司 充电式多功能机
CN105856142A (zh) * 2015-02-09 2016-08-17 松下知识产权经营株式会社 冲击旋转工具
CN205497394U (zh) * 2015-02-15 2016-08-24 苏州宝时得电动工具有限公司 动力工具
CN210383693U (zh) * 2019-06-19 2020-04-24 东莞市至拙电器科技有限公司 一种厨师机

Also Published As

Publication number Publication date
EP4297933A1 (en) 2024-01-03
CN216883814U (zh) 2022-07-05

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