Electric power tool

• US 9,527,200 B2
• Filed: 10/29/2013
• Issued: 12/27/2016
• Est. Priority Date: 11/01/2012
• Status: Active Grant

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: Okouchi, Katsumi, Ogino, Yohei
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US14/065,931
• Publication Number:
  US 20140116738A1
• Time in Patent Office: 1,155 Days
• Field of Search: 173/132, 173/46, 173/213, 173/217, 173/171, 409/137, 409/138, 409/180, 409/182, 409/210, 409/218, 279/143, 279/150, 144/117.3, 144/134.1, 144/136.95, 144/154.5, 408/241.S
• US Class Current: 1/1
• CPC Class Codes: B23B 2231/2081 Keys, spanners or wrenches to operate the collet chuck
• CPC Class Codes: B23B 2260/078 Hand tools used to operate chucks or to assemble, adjust or disassemble tools or equipment used for turning, boring or drilling
• CPC Class Codes: B23Q 9/0028 the guide means being fixed only on the machine
• CPC Class Codes: B25F 3/00 Associations of tools for different working operations with one portable power-drive means; Adapters therefor
• CPC Class Codes: B25F 5/003 Stops for limiting depth in rotary hand tools for drilling tools: B23B49/003
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]

Abstract

A shoe attached to a shoe attachment portion includes a spanner portion. As the shoe can be separated from a tool main body of the cutout tool, the shoe can be used as a spanner. The shoe can function as the spanner for replacing a bit in a bit attachment mechanism. In addition, the shoe has its original function of the shoe by which a protrusion amount of the bit can be adjusted. Since the shoe is attached to the shoe attachment portion and held by the tool main body, it turns out that the spanner can be prepared for use with the cutout tool.

Claims

1. An electric power tool comprising:

a motor;

a housing that accommodates the motor;

a tool tip holding unit that is driven by the motor and is configured to hold a tool tip, the tool tip holding unit including a nut that attaches the tool tip to the tool tip holding unit; and

a contact member that is removably attached to the housing, the contact member including (i) a contact portion having an opening through which the tool tip extends and (ii) a plate portion extended from the contact portion, the plate portion extending in a longitudinal direction of the tool tip, the plate portion having a spanner portion corresponding to an outer shape of the nut;

wherein the contact portion is configured to come into contact with a workpiece when the contact member is attached to the housing, and

the spanner portion is configured to rotate the nut to attach and detach the tool tip to and from the tool tip holding unit when the contact member is removed from the housing.

2. The electric power tool according to claim 1, further comprising:

an output shaft that is driven by the motor;

wherein the nut rotates with respect to the output shaft.

3. The electric power tool according to claim 1, wherein the spanner portion is located on a rear end side that is opposite a front end side where the contact portion of the contact member is provided.

4. The electric power tool according to claim 3, wherein the contact portion includes a surface that extends in a direction perpendicular to a longitudinal direction of the electric power tool.

5. The electric power tool according to claim 1, wherein the contact portion includes a surface that extends in a direction perpendicular to a longitudinal direction of the electric power tool.

6. The electric power tool according to claim 1, wherein the spanner portion is located both on a rear end side opposite to a front end side where the contact portion is provided and the front end side.

7. The electric power tool according to claim 1, wherein the housing includes a battery mounting unit, and a battery is detachably mounted on the battery mounting unit.

8. The electric power tool according to claim 1, wherein the plate portion includes a slide guide groove along which the contact member slides with respect to the housing, the slide guide groove extending from the spanner portion.

9. The electric power tool according to claim 8, wherein the plate portion includes a convex-shaped portion that is located between the slide guide groove and the spanner portion.