Handheld power tool

Patent metadata

Field	Value
Publication number	US-2022389727-A1
Application number	US-202017774475-A
Country	US
Kind code	A1
Filing date	Sep 25, 2020
Priority date	Nov 7, 2019
Publication date	Dec 8, 2022
Grant date	—

Abstract

Provided is a user-friendly power tool. The power tool 1 comprises: a battery pack mount 2c to which a battery pack 4 can be attached and detached; and a cover 17 that can cover the battery pack 4, mounted on the battery pack mount 2c, and the battery pack mount 2c so as to allow opening and closing. The wall 23 of the battery pack mount 2c is provided with a correcting part 23a that is capable of correcting inward warping of both the left and right side surfaces of the cover 17, which are the longitudinal direction surfaces. The lower edge of the correcting part 23a has a rounded shape.

First claim

1 . A handheld power tool, comprising:
a load part; an operation part, operated by an operator to switch an operation of the load part; a housing, accommodating the load part; a battery pack mount which is provided in the housing, and to which a battery pack serving as a driving source of the load part is able to be attached and detached; and a cover, capable of covering the operation part and the battery pack mounted to the battery pack mount, wherein the operation part is configured to be operable in a state in which the battery pack is mounted to the battery pack mount, and the cover is supported by the housing to be able to open and close, and is configured to cover the operation part and the battery pack mounted to the battery pack mount in a closed state of the cover.

2 . The handheld power tool as claimed in claim 1 ,
wherein the cover is configured to be able to open and close with respect to the housing by a latch mechanism locking the cover in the closed state with respect to the housing.

3 . (canceled)

4 . (canceled)

5 . (canceled)

6 . The handheld power tool as claimed in claim 1 , having a correcting part capable of correcting a shape of the cover,
wherein the correcting part corrects the shape of the cover by contacting the cover, a body part, the battery pack, or an adapter mounted to the battery pack mount.

7 . (canceled)

8 . The handheld power tool as claimed in claim 6 ,
wherein the correcting part has a correcting force that is a force acting in a direction pressing the cover outward.

9 . The handheld power tool as claimed in claim 6 ,
wherein a movable part able to open and close is provided at the cover, in a case where the battery pack is mounted to the battery pack mount, the movable part is usable in a closed state, in an open state of the movable part, an opening part through which a cord extending from the adapter mounted to the battery pack mount extends out of the cover is formed, or, in a mounted state of the movable part, the opening part through which the cord extending from the adapter mounted to the battery pack mount extends out of the cover is formed.

10 . (canceled)

11 . The handheld power tool as claimed in claim 9 ,
wherein an engagement part of the cord with at least one of the movable part and the cover forms a spigot structure.

12 . The handheld power tool as claimed in claim 9 ,
wherein the body part has a handle part extending upward from the battery pack mount, in the open state of the movable part, an upper end of the movable part is located at a same height as or lower than a lower end of the handle part.

13 . The handheld power tool as claimed in claim 1 ,
wherein the load part is a brushless motor, and has a stator, a rotor rotatable with respect to the stator, and a coil provided at the stator, the handheld power tool comprises a control part controlling rotation of the brushless motor, and the operation part has a switch which switches a rotation speed of the brushless motor by an operation of a user.

14 . The handheld power tool as claimed in claim 13 ,
wherein, in a case where a load applied to the brushless motor is in a predetermined range, the control part performs constant speed control maintaining a rotation speed of the brushless motor regardless of the load.

15 . The handheld power tool as claimed in claim 13 ,
wherein the handheld power tool is a concrete vibrator having a tip tool inserted into fresh concrete and vibrated by the load part, the control part is able to change a rotation speed of the brushless motor in accordance with an external operation.

16 . A cover, covering an adapter supplying power from an external power source to a handheld power tool, the cover comprising:
a hinge, providing support so that the cover is rotatable between a state in which the cover covers the adapter and a state in which the cover does not cover the adapter; a latch mechanism, able to fix in the state in which the cover covers the adapter; and an opening part, through which a cord extending from the adapter passes.

17 . The cover as claimed in claim 16 , wherein the opening part is located at a back of the cover.

18 . The cover as claimed in claim 16 , comprising a movable part covering the opening part, wherein the cord is able to pass through in a state in which the movable part is removed from the opening part.

19 . The cover as claimed in claim 16 , wherein the hinge is located in front of the opening part.

20 . A handheld power tool, to which the cover as claimed in claim 16 is able to be mounted, the handheld power tool comprising:
a motor;
a housing, accommodating the motor; and
an adapter connection part, provided in the housing and able to connect an adapter supplying power from an external power source.

Assignees

• Koki Holdings Co Ltd

Inventors

• EBISAWA Yuuki
• Kobayashi Hideki
• Yokota Tomoyoshi
• Ebisawa Natsumi
• Itou Takafumi
• HIRATSUKA Syota

Classifications

• H02K11/0094

  Structural association with other electrical or electronic devices · CPC title

• H01M50/271

  Lids or covers for the racks or secondary casings · CPC title

• E04G21/08 Primary

  Internal vibrators {, e.g. needle vibrators (combined with vacuum E04G21/061)} · CPC title

• H02K7/061

  using rotary unbalanced masses (for generating mechanical vibrations in general B06B1/16) · CPC title

• B06B1/16

  operating with systems involving rotary unbalanced masses · CPC title