Auxiliary Device For a Hand-Held Power Tool

• US 20080199269A1
• Filed: 10/05/2006
• Published: 08/21/2008
• Est. Priority Date: 11/08/2005
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Mohd, Zaidi Ahmad, Stevens, James B., Adamczak, Wolfgang, Braun, Marco
• Granted Patent: US 7,871,227 B2
• Time in Patent Office: Days
• US Class Current: 409/182
• CPC Class Codes: B25F 5/001 Gearings, speed selectors, clutches or the like specially adapted for rotary tools
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 279/3437 Safety feature; e.g., ejector, interlock
• CPC Class Codes: Y10T 409/30392 with means to protect operative or machine [e.g., guard, safety device, etc.]
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]
• CPC Class Codes: Y10T 409/308624 with limit means to aid in positioning of cutter bit or work [e.g., gauge, stop, etc.]
• CPC Class Codes: Y10T 409/309352 Cutter spindle or spindle support

Abstract

The invention relates to an auxiliary device for a portable tool, comprising a receptacle (2) for a motor-operated portable tool (22) having an output shaft (26), and comprising a drive train (9) which has a tool receptacle (8), to be opened and closed by rotation, and which can be connected to the output shaft (26) of the motor-operated portable tool (22) via a coupling device. Provision is made for the auxiliary device (1) for the portable tool to have an anti-rotation locking means (13) acting on the drive train (9).

Claims

1. An auxiliary device for a hand-held power tool with a fitting for a motor-operated, hand-held power tool having a drive shaft, and with a drive train which includes a tool fitting, which is rotated to be opened or closed, and which can be connected to the output shaft of the motor-operated, hand-held power tool via a coupling device, characterized by an anti-rotation locking device (13), which acts on the drive train (9).

2. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the anti-rotation locking device (13) includes an axially displaceable anti-rotation lock (31), which acts on the drive train (9).

3. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the coupling device is designed as a belt drive (27).

4. The auxiliary device for a hand-held power tool as recited in claim 1, characterized by a workpiece-supporting device (17).

5. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the workpiece-supporting device (17) is height-adjustable.

6. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the drive train (9) is enclosed in a protective housing (36).

7. The auxiliary device for a hand-held power tool as recited in claim 1

wherein

the protective housing, (36) is designed as a handle (39).

8. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the protective housing (36) is designed to insulate against heat produced during operation.

9. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the protective housing (36) is located such that it is laterally offset from the fitting (2).

10. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the drive train (9) is located such that it extends parallel to the output shaft of the motor-operated hand-held power tool (22) located in the fitting (2).

11. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the drive train (9) has a polygon (34) which interacts with a non-rotatable locking element (35), which is supported in an axially displaceable manner in the housing (11), in a form-fit manner in the locked position.

12. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the polygon (34) is located on the end of the drive train (9) opposite to the tool fitting (8).

13. The auxiliary device for a hand-held power tool as recited in claim 1, characterized by a manual actuating element (12), which acts on the locking element (35) and is displaceably supported in the housing (11).

14. The auxiliary device for a hand-held power tool as recited in claim 1,

wherein

the drive train (9) is electrically insulated by the protective housing (36).