Powered working machine

Patent metadata

Field	Value
Publication number	US-2017312902-A1
Application number	US-201515522294-A
Country	US
Kind code	A1
Filing date	Oct 21, 2015
Priority date	Oct 29, 2014
Publication date	Nov 2, 2017
Grant date	—

Abstract

A powered working machine ( 10 ) with which the transmission of vibrations from a housing to a control substrate can be suppressed, operates a distal tool using power from a brushless motor ( 30 ), is configured to have: a control substrate ( 71 ) that controls the brushless motor ( 30 ); a substrate case ( 82 ) that accommodates the control substrate ( 71 ); a motor housing ( 20 ) and cover ( 160 ) that support the substrate case ( 82 ); an elastic body ( 152 ) that is disposed between the substrate case ( 82 ) and the motor housing ( 20 ); and an elastic body ( 153 ) that is disposed between the substrate case ( 82 ) and the cover ( 160 ).

First claim

1 . (canceled)

2 . The powered working machine according to claim 6 , wherein a resin layer configured to cover the control board is formed in the board case.

3 . The powered working machine according to claim 6 , wherein the board case is disposed at a side portion of the motor in a radial direction of an output shaft of the motor.

4 . The powered working machine according to claim 6 , wherein a striking mechanism operated in a direction along a first axis with a power of the motor and configured to apply a striking force to the working tool is installed in the housing, and
the elastic body is interposed between the board case and the housing in the direction along the first axis.

5 . The powered working machine according to claim 4 , wherein the elastic body is disposed at both sides of the board case in the direction along the first axis.

6 . A powered working machine configured to operate a working tool with a power of a motor, the powered working machine comprising:
a control board configured to control the motor; a board case configured to accommodate the control board; a housing, configured to support the board case; and an elastic body interposed between the board case and the housing, wherein the housing comprises: a first housing that accommodates the motor; and a second housing that accommodates the first housing and the board case, and the elastic body is interposed between the board case and the first housing and/or between the board case and the second housing.

7 . The powered working machine according to claim 6 , wherein the board case comprises:
a plate section disposed between the first housing and the control board; and a sidewall installed at an outer circumferential edge of the plate section, and the elastic body comprises: a first elastic body interposed between the plate section and the first housing; and a second elastic body interposed between a tip of the sidewall and the second housing.

8 . The powered working machine according to claim 7 , wherein the first elastic body is installed throughout a region of an outer surface of the plate section.

9 . A powered working machine configured to operate a working tool with a power of a motor, the powered working machine comprising:
a control board configured to control the motor; a board case configured to accommodate the control board; a housing, configured to support the board case; and an elastic body interposed between the board case and the housing, wherein the housing comprises a first housing that accommodates the motor, the board case comprises a boss section into which a screw member is inserted to fix the board case to the first housing, and the elastic body comprises a third elastic body installed at the boss section.

10 . The powered working machine according to claim 6 , wherein an output section extending in a forward/rearward direction and driven by the motor is provided, and
the elastic body is interposed between the board case and the housing in the forward/rearward direction.

11 . The powered working machine according to claim 10 , wherein the motor has an output shaft extending in the forward/rearward direction, and
the elastic body is interposed between the board case and the housing in the forward/rearward direction.

12 . The powered working machine according to claim 10 , wherein the elastic body is disposed at both sides of the board case in the forward/rearward direction.

13 . The powered working machine according to claim 10 , wherein the control board is accommodated in the housing while extending in the forward/rearward direction.

14 . A powered working machine comprising:
a board; a motor connected to the board; a housing configured to accommodate the board and the motor; and an output section extending in a forward/rearward direction and driven by the motor, wherein an elastic body is disposed on a vibration transmission path reaching the board from the output section.

15 . The powered working machine according to claim 14 , wherein the elastic body is disposed between the board and the housing at both sides in the forward/rearward direction.

16 . The powered working machine according to claim 6 ,
wherein the board case comprises a boss section into which a screw member is inserted to fix the board case to the first housing, and the elastic body comprises a third elastic body installed at the boss section.

17 . The powered working machine according to claim 9 ,
wherein the housing comprises a second housing that accommodates the first housing and the board case, and the elastic body is interposed between the board case and the first housing and/or between the board case and the second housing.

Assignees

• Hitachi Koki Kk

Inventors

• Noguchi Yuta
• Iwata Kazutaka
• Funabashi Kazuhiko
• Sudo Tomoaki
• Inui Ken
• Tadokoro Naoki

Classifications

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B25D17/24 Primary

  Damping the reaction force {(resiliently mounted handles B25D17/043; dampers in connections of hammers to backhoes E02F3/966)} · CPC title

• B25D11/125

  with a fluid cushion between the crank drive and the striking body · CPC title

• B25F5/006 Primary

  Vibration damping means · CPC title