CHAIN SAW

• US 20140047722A1
• Filed: 08/13/2013
• Published: 02/20/2014
• Est. Priority Date: 08/15/2012
• Status: Abandoned Application

• Current Assignee: Hitachi KOKI Company Limited (Koki Holdings Co., Ltd.)
• Original Assignee: Hitachi KOKI Company Limited (Koki Holdings Co., Ltd.)
• Inventors: Onose, Miyoji, Nakayama, Ai, Kodato, Seiichi, Sagawa, Kouji, Kakefuda, Shinichi
• Application Number:
  US13/965,990
• Publication Number:
  US 20140047722A1
• Time in Patent Office: Days
• US Class Current: 30/383
• CPC Class Codes: B23D 57/023 hand-held or hand-operated
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: B27B 17/00 Chain saws; Equipment therefor slotting or mortising machines equipped with chain cutters B27F5/06

Abstract

A chain saw has a drive shaft which drives the saw chain, an electric motor which imparts a rotational force to the drive shaft, a main body housing which incorporates the electric motor, a battery which is detachably attached to the main body housing, a battery guard which supports a bottom surface of the battery, and a hook which is provided in a hook accommodating portion on a bottom surface side of the battery guard so as to be freely drawn out to the rear. A pillar-like portion is formed within the battery guard in a position lying further forwards than the hook accommodating portion, and bent-back portions of the hook are brought into engagement with the pillar-like portion.

Claims

1. A chain saw comprising:

a main body housing;

a guide bar which extends in a frontward direction of the main body housing;

a saw chain configured to revolve along the guide bar;

a drive shaft configured to drive the saw chain;

an electric motor configured to impart a rotational force to the drive shaft;

a battery configured to be detachably attached to the main body housing; and

a battery guard configured to cover part of a bottom surface of the battery.

2. The chain saw according to claim 1,

wherein the battery is configured to slide down from above the main body housing to be attached thereto.

3. The chain saw according to claim 1,

wherein the battery guard has an elastic member which is provided between the battery guard and the battery.

4. The chain saw according to claim 1,

wherein the battery guard has a leg portion at a bottom side thereof.

5. The chain saw according to claim 1,

wherein the battery guard has a hook.

6. The chain saw according to claim 5,

wherein a hook accommodating portion is formed in the battery guard, and

wherein the hook is provided in the hook accommodating portion so as to be freely drawn out to a rearward direction.

7. The chain saw according to claim 5,

wherein a pillar-like portion is provided at a front side of the hook accommodating portion, and

wherein bent-back portions of the hook are in engagement with the pillar-like portion.

8. The chain saw according to claim 5,

wherein the hook comprises:

a ring-shaped portion having a substantially circular shape; and

straight-line portions which extend in the frontward direction from both ends of the ring-shaped portion, respectively, and

wherein the bent-back portions are formed at distal end portions of the straight-line portions.

9. The chain saw according to claim 5,

wherein the battery guard has a draw-out hole at the front side of the hook accommodating portion configured to pass the straight-line portions of the hook therethrough, and

wherein the straight-line portions are configured to be movable to pass through the draw-out hole.

10. The chain saw according to claim 5,

wherein the straight-line portions of the hook are shaped so as to be spaced apart wider from each other as they move away from the ring-shaped portion.

11. The chain saw according to claim 5,

wherein the hook accommodating portion is a recessed groove which is opened at a rear side on a bottom surface side of the battery guard.