Work tool

Patent metadata

Field	Value
Publication number	US-10569406-B2
Application number	US-201715435400-A
Country	US
Kind code	B2
Filing date	Feb 17, 2017
Priority date	Feb 19, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

It is an object of the invention to provide an ergonomically excellent work tool while maintaining high manufacturing efficiency. A representative work tool is provided which performs a prescribed operation on a workpiece by driving a tool accessory. The work tool has an inner housing that houses a motor and a spindle, an outer housing and an elastic member. A first inner housing element and a second inner housing element are assembled while being opposed to each other in a transverse direction, and a first outer housing element and a second outer housing element are assembled while being opposed to each other in a vertical direction.

First claim

The invention claimed is:

1. A work tool, which performs a prescribed operation on a workpiece by driving a tool accessory, comprising:
a motor,
a spindle having a rotation axis and configured to be rotated on the rotation axis within a prescribed angular range via the motor to drive the tool accessory,
an inner housing configured to house at least the motor,
an outer housing having an elongate form and configured to house the inner housing, and
an elastic member disposed between the inner housing and the outer housing, wherein:
the inner housing has a first inner housing element and a second inner housing element which are assembled into the inner housing,
the outer housing has a first outer housing element and a second outer housing element which are assembled into the outer housing, and
wherein a longitudinal direction of the outer housing is defined as a longitudinal direction, an extending direction of the rotation axis of the spindle is defined as a vertical direction, and a direction perpendicular to the longitudinal direction and the vertical direction is defined as a transverse direction, the first inner housing element and the second inner housing element are assembled while being opposed to each other in the transverse direction, and the first outer housing element and the second outer housing element are assembled while being opposed to each other in the vertical direction.

2. The work tool as defined in claim 1 , comprising a brushless motor that forms the motor, and a controller that controls driving of the brushless motor, wherein an output shaft of the brushless motor is arranged in parallel to the rotation axis of the spindle.

3. The work tool as defined in claim 2 , comprising a fastening member extending in a direction of the rotation axis and configured to fasten the first and second outer housing elements to each other, wherein the outer housing has a housing space for the fastening member between a stator of the brushless motor and the spindle.

4. The work tool as defined in claim 3 , wherein the fastening member housing space also serves as an elastic member housing space for housing the elastic member.

5. The work tool as defined in claim 1 , further comprising an electrical member, wherein the inner housing has an elongate form extending in the longitudinal direction of the outer housing and houses at least the motor in one end region in the longitudinal direction and has the electrical member in the other end region.

6. The work tool as defined in claim 1 , further comprising a battery mounting part for mounting a battery for driving the motor, wherein the inner housing has an elongate form extending in the longitudinal direction of the outer housing and houses at least the motor in one end region in the longitudinal direction and has the battery mounting part in the other end region.

7. The work tool as defined in claim 1 , wherein the elastic member is held in the transverse direction between the inner housing and the outer housing via an intervening member.

Assignees

• Makita Corp

Inventors

• Aoki Yonosuke

Classifications

• B25F5/02

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

• B25F5/008

  Cooling means · CPC title

• B25F5/006 Primary

  Vibration damping means · CPC title

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• B25F5/029

  with storage compartments (B25F5/027 takes precedence; handles with provisions for storing tool elements B25C1/08) · CPC title