Electric tool and battery pack for the electric tool

Patent metadata

Field	Value
Publication number	US-9748534-B2
Application number	US-201414182931-A
Country	US
Kind code	B2
Filing date	Feb 18, 2014
Priority date	Mar 28, 2013
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

When a battery pack is mounted to a battery attachment part, the battery pack is slid in a horizontal direction (a direction substantially perpendicular to an upper-lower direction) with respect to the housing, e.g., along a long longitudinal direction of a battery-side rail part, such that tool-side rail parts of the battery attachment part are introduced into engaging recess portions of the battery pack. Thereby, the elastic members are fitted and compressed in the battery-side rail parts and the tool-side rail parts, so that the elastic members press upwards the battery-side rail part (e.g., the battery pack) and press downwards the tool-side rail parts (e.g., the housing). That is, the elastic members press the battery pack and the housing such that they come close to each other.

First claim

What is claimed is:

1. An electric tool comprising:
a housing having a battery attachment part;
a battery pack,
wherein one of the battery attachment part and the battery pack includes a rail part fixed thereto, and another one of the battery pack and the battery attachment part engages the rail part such that the battery pack slides along a rail as it is attached to or detached from the housing, and
wherein the rail part is provided with a pressing member that is configured to press in a direction intersecting a slide direction of the battery pack as it is attached to or detached from the housing such that the battery pack and the housing come close to each other; and

a latching part disposed in one of the battery attachment part and the battery pack and configured to engage a recess portion in the other of the battery attachment part and the battery pack independent from the pressing member.

2. The electric tool according to claim 1 , wherein the rail part is a battery-side rail part provided to the battery pack, and wherein the pressing member is provided to the rail part.

3. The electric tool according to claim 2 , wherein the pressing member partially protrudes from the rail part towards a side opposite to the housing.

4. The electric tool according to claim 1 , wherein the rail part is a tool-side rail part provided to the battery attachment part, and wherein the pressing member is provided to the rail part.

5. The electric tool according to claim 4 , wherein the pressing member partially protrudes from the rail part towards a side opposite to the battery pack.

6. The electric tool according to claim 1 , wherein the pressing member is an elastic member.

7. The electric tool according to claim 6 , wherein the elastic member has a substantial cylinder shape and is configured to press the battery pack and the housing with an outer periphery thereof.

8. The electric tool according to claim 6 , wherein the rail part is provided with an insertion part for inserting the elastic member therein, and wherein the elastic member is prevented from being pulled out from the insertion part.

9. The electric tool according to claim 8 , wherein the insertion part is provided with a pulling-out prevention convex portion, and wherein the elastic member is provided with a constricted part configured to engage with the pulling-out prevention convex portion when the elastic member is inserted into the insertion part.

10. The electric tool according to claim 1 , wherein a pressing direction of the pressing member is substantially perpendicular to a long longitudinal direction of the rail part.

11. The electric tool according to claim 1 , wherein the pressing member is provided in plural in a long longitudinal direction of the rail part.

12. The electric tool according to claim 1 , further comprising: a latch part configured to engage the battery pack and the battery attachment part at a state where they are mounted, wherein the pressing member is provided to at least the latch part-side.

13. An electric tool comprising:
a housing having a battery attachment part;
a battery pack that is coupled to a lower side of the battery attachment part,
wherein one of the battery attachment part and the battery pack includes a pressing member that is configured to press in a direction intersecting a slide direction of the battery pack as it is attached to or detached from the housing, and
wherein the battery pack is configured to come close to an upper side when the battery pack is mounted to the battery attachment part along a rail part

a latching part disposed in one of the battery attachment part and the battery pack and configured to engage a recess portion in the other of the battery attachment part and the battery pack independent from the pressing member.

14. The electric tool according to claim 13 , wherein the rail part is provided with a pressing member configured to press the battery pack and the housing such that they come close to each other.

15. An electric tool comprising:
a housing having a battery attachment part, to which a battery pack is configured to be mounted thereto,
wherein the battery attachment part includes a rail part fixed thereto along which the battery pack and the battery attachment part engages such that the battery pack slides along the battery attachment part in a longitudinal direction of the battery pack as it is attached to or detached from the housing, and
wherein the battery pack is configured to come close to the housing in a direction intersecting a slide direction of the battery pack when the battery pack is attached to the battery attachment part along the rail part; and

a latching part disposed in one of the battery attachment part and the battery pack and configured to engage a recess portion in the other of the battery attachment part and the battery pack.

16. The electric tool according to claim 15 , wherein the battery pack is configured to be slid along the rail part and to come close to the housing in a direction intersecting the rail part.

17. A battery pack configured to be mounted to an electric tool having a battery attachment part, the battery pack comprising:
a battery-side rail part configured to be guided in a slide direction of the battery pack when engaged with a tool-side rail part of the battery attachment part,
wherein the battery-side rail part is provided with a pressing member configured to press in a direction intersecting the slide direction of the battery pack such that the battery pack and the electric tool come close to each other when engaged; and

a latching part disposed in one of the battery-side rail part and the tool-side rail part and configured to engage a recess portion in the other of the battery-side rail part and the tool-side rail part independent from the pressing member.

Assignees

• Hitachi Koki Kk

Inventors

• Hanawa Hiroyuki
• Takeuchi Shota
• Nakano Yoshihiro
• Ogawa Itsushi
• Yokoyama Kousei

Classifications

• 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

• H01M50/262

  with fastening means, e.g. locks · CPC title

• H01M50/247

  specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers · CPC title

• H01M50/244

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title

• Y10T403/1624

  Related to joint component · CPC title