Hook for electric power tool and rechargeable electric power tool equipped with the hook

• US 8,443,913 B2
• Filed: 10/25/2010
• Issued: 05/21/2013
• Est. Priority Date: 11/10/2009
• Status: Active Grant

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: Nagasaka, Hidenori, Kumagai, Ryunosuke, Okuda, Shinsuke
• Primary Examiner(s): Nash, Brian D
• Application Number:
  US12/911,207
• Publication Number:
  US 20110108300A1
• Time in Patent Office: 939 Days
• Field of Search: 173/217, 173/171
• US Class Current: 173/171
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: Y10T 24/4523 Hook

Abstract

A hook for an electric power tool is engageable with a carabiner comprising a hook end portion, and a gate member capable of opening the hook end portion. The hook includes: a base portion attached to a housing of a rechargeable electric power tool; an engagement portion positioned outside the base portion and having a first through-hole; a folded-back portion connecting the base portion and the engagement portion and having a second through-hole; and an outer abutment portion formed between the first and second through-holes and configured to cause the gate member to be bent inwardly when the gate member is pressed against the outer abutment portion. The outer abutment portion is engaged with the carabiner by inserting the hook end portion into the first and second through-holes, while the gate member is pressed against the outer abutment portion to open the hook end portion.

Claims

1. A hook for an electric power tool engageable with a carabiner which comprises a hook end portion, and a gate member capable of opening the hook end portion when it is pressed and bent inwardly, the hook comprising:

a base portion attached to a housing of a rechargeable electric power tool;

an engagement portion positioned outside the base portion and having a first through-hole into which the hook end portion is inserted;

a folded-back portion connecting the base portion and the engagement portion and having a second through-hole into which the hook end portion is inserted;

an outer abutment portion formed between the first through-hole and the second through-hole and configured to cause the gate member to be bent inwardly when the gate member is pressed against the outer abutment portion;

an inner abutment portion formed between the base portion and the second through-hole and configured to cause the gate member to be bent inwardly when the gate member is pressed against the inner abutment portion; and

a portion of the hook that is generally U-shaped so as to include two leg portions, the base portion, forming one leg portion and the engagement portion forming the other leg portion,

wherein the outer abutment portion is engaged with the carabiner by inserting the hook end portion into the first through-hole and the second through-hole, while the gate member is pressed against the outer abutment portion to open the hook end portion; and

wherein the outer abutment portion is disengaged from the carabiner by pulling out the hook end portion from the first through-hole, while the gate member is pressed against the inner abutment portion and moved away from the second through-hole to open the hook end portion.

2. The hook for an electric power tool according to claim 1, wherein the base portion is attached to an attachment portion for a battery pack formed on the housing in such a manner that the base portion is positioned parallel to a side surface of the battery pack in a direction where the base portion protrudes from the attachment portion.

3. The hook for an electric power tool according to claim 2, wherein the base portion has a protruding strip to be fitted into a slit-hole formed in the attachment portion.

4. The hook for an electric power tool according to claim 2, wherein the base portion has an oblong hole extending in a transverse direction of the base portion, through which a screw is threadedly engaged with the attachment portion.

5. The hook for an electric power tool according to claim 1, wherein the first through-hole has an elongated shape and is formed in a surface of the other leg portion in a longitudinal direction.

6. The hook for an electric power tool according to claim 1, wherein the outer abutment portion is formed by an outer surface of the engagement portion positioned between the first through-hole and the second through-hole.

7. The hook for an electric power tool according to claim 1, wherein the inner abutment portion is formed by an inner surface of the base portion positioned between the base portion and the second through-hole.

8. A rechargeable electric power tool that functionally cooperates with a carabiner that includes a hook end portion and a gate member capable of opening the hook end portion when it is pressed and bent inwardly, the rechargeable electric power tool comprising:

a housing;

a battery pack as a power source configured to be detachably mounted to the housing; and

a hook attached to the housing, the hook including;

a base portion attached to a housing of a rechargeable electric power tool;

an engagement portion positioned outside the base portion and having a first through-hole into which the hook end portion is inserted;

a folded-back portion connecting the base portion and the engagement portion and having a second through-hole into which the hook end portion is inserted;

an outer abutment portion formed between the first through-hole and the second through-hole and configured to cause the gate member to be bent inwardly when the gate member is pressed against the outer abutment portion;

an inner abutment portion formed between the base portion and the second through-hole and configured to cause the gate member to be bent inwardly when the gate member is pressed against the inner portion; and

a portion of the hook that is generally U-shaped so as to include two leg portions, the base portion forming one leg portion and the engagement portion forming the other leg portion,

wherein the outer abutment portion is engaged with the carabiner by inserting the hook end portion into the first through-hole and the second through-hole, while the gate member is pressed against the outer abutment portion to open the hook end portion; and

wherein the outer abutment portion is disengaged from the carabiner by pulling out the hook end portion from the first through-hole, while the gate member is pressed against the inner abutment portion and moved away from the second through-hole to open the hook end portion.

9. The rechargeable electric power tool according to claim 8, wherein the base portion is attached to an attachment portion for a battery pack formed on the housing in such a manner that the base portion is positioned parallel to a side surface of the battery pack in a direction where the base portion protrudes from the attachment portion.

10. An electric power tool, comprising:

a body portion;

a handle portion extending downward from the body portion, the handle portion having a lower part;

a battery pack attachment portion disposed at the lower part of the handle portion, the battery pack attachment portion having a side surface;

a hook disposed on the side surface of the battery pack attachment portion, the hook including;

a base portion to which a folded back portion is connected, an engagement portion connecting the folded back portion, a screw hole through which the screw is inserted, and a portion of the hook that is generally U-shaped so as to include two leg portions, the base portion forming one leg portion and the engagement portion forming the other leg portion; and

a screw to connect the hook to the lower end of the handle portion,

wherein one through-hole is formed in the base portion and another through-hole is formed in the engagement portion.

11. The electric power tool according to claim 10, wherein the hook includes a protruding strip connected to the base portion, and the screw hole is formed between a position where the one through-hole is formed and a position where the protruding strip is connected to the base portion.

12. The electric power tool according to claim 11, wherein the protruding strip is arranged at right angles to the base portion.

13. The electric power tool according to claim 10, wherein the battery pack is fixed at a lower part of the battery pack attachment portion in such a manner that the battery pack is on the side of the first through-hole.

14. The electric power tool according to claim 10, wherein an upper edge of the engagement portion is disposed above the screw hole.

15. The electric power tool according to claim 10, wherein the first through-hole is formed so as to face the second through-hole or the screw hole in a lateral direction.

16. An electric power tool engageable with a carabiner, the electric power tool comprising:

a body portion;

a handle portion extending downward from the body portion, the handle portion having a lower part;

a battery pack attachment portion disposed at the lower part of the handle portion, the battery pack attachment portion having a side surface;

a hook disposed on the side surface of the battery pack attachment portion, the hook including a portion that is generally U-shaped so as to include two leg portions, the base portion forming one leg portion and the engagement portion forming the other leg portion, the hook having an engagement portion in which a first through-hole is formed in such a manner that the carabiner can be inserted through the first through-hole; and

a screw to connect the hook to the lower part of the handle portion.

17. The electric power tool according to claim 16, wherein the hook includes a folded back portion and a base portion, wherein the folded back portion is connected to the engagement portion, and the base portion is connected to the folded back portion in which a second through-hole is formed.

18. The electric power tool according to claim 17, wherein

the hook has a screw hole through which the screw is inserted and a protruding strip which is connected to the base portion, the protruding strip being positioned at right angles to the base portion.

19. The electric power tool according to claim 16, wherein the base portion and the engagement portion are arranged in parallel.

20. The electric power tool according to claim 16, wherein the battery pack is fixed at a lower part of the battery pack attachment portion, and the battery pack is disposed on the side of the base portion.

21. An electric power tool comprising:

a body portion;

a handle portion extending downward from the body portion;

a battery pack attachment portion disposed at a lower part of the handle portion;

a hook disposed on a side surface of the battery pack attachment portion; and

a screw to fix the hook,

wherein the hook has a base portion to which a folded back portion is connected, an engagement portion connecting the folded back portion, and a screw hole through which the screw is inserted,

wherein the base portion and the engagement portion extend in a vertical direction respectively, a first through-hole is formed in the base portion and a second through-hole is formed in the engagement portion.