Hand-Held Power Tool

• US 20120318545A1
• Filed: 06/15/2012
• Published: 12/20/2012
• Est. Priority Date: 06/16/2011
• Status: Active Grant

• Current Assignee: C.&E. Fein GmbH
• Original Assignee: C.&E. Fein GmbH
• Inventors: Schreiber, Alfred
• Granted Patent: US 9,289,892 B2
• Time in Patent Office: Days
• US Class Current: 173/1
• 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 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

Abstract

A power-operated hand-held power tool, in particular a power tool comprising an oscillation drive for driving a tool in an oscillating manner, comprising at least one sensor for detecting vibrations and comprising a controller which is coupled to the at least one sensor to control at least one operating parameter of the The power tool according to an output signal of the at least one sensor, the The power tool being configured to receive different tools, and the controller being configured to evaluate the output signal of the at least one sensor and preferably to compare it with stored characteristic values for the vibrations of different tools so as to control at least one operating parameter of the The power tool according to said comparison, is specified.

Claims

1. A hand-held power tool, comprising:

a controller for controlling said power tool;

at least one sensor for detecting vibrations of said power tool and for generating an output signal characteristic for said vibrations; and

a storage coupled to said controller;

wherein said power tool is configured for operating with a plurality of different tools;

wherein said storage is configured for storing characteristic values for vibrations caused by particular tools of said plurality of different tools;

wherein said controller is coupled to said at least one sensor and is configured for comparing said output signal of said at least one sensor with said stored characteristic values for vibrations, and is further configured for generating a control signal for controlling at least one operating parameter of said power tool according to said comparison.

2. The power tool of claim 1, comprising an oscillation drive for driving a tool in an oscillating manner.

3. The power tool of claim 1, wherein said controller is configured for evaluating said output signal of said at least one sensor so as to limit a vibratory behaviour of said power tool to a permissible maximum value according to said evaluation.

4. The power tool of claim 1, wherein said controller is configured for evaluating said output signal of said at least one sensor during a state selected from the group consisting of an idling mode and a start-up mode.

5. The power tool of claim 1, wherein said controller is configured for recording and storing said output signal of said at least one sensor for each tool selected from said plurality of different tools.

6. The power tool of claim 5, wherein said controller is configured for recording and storing said output signal of said at least one sensor for each tool selected from said plurality of different tools during a state selected from the group formed by an idling mode and a start-up mode of said power tool.

7. The power tool of claim 6, wherein said controller is configured for evaluating said output signal of said at least one sensor and for comparing it with said stored values for said plurality of different tools so as to determine the type of tool.

8. The power tool of claim 1, further comprising a sensor for tool recognition.

9. The power tool of claim 1, further comprising a device for transferring data from the tool to the power tool.

10. The power tool of claim 1, wherein said controller is configured for storing a map of operating parameters of each of said plurality of different tools.

11. The power tool of claim 7, wherein said controller is configured for optimizing the operating parameters according to the type of tool determined.

12. The power tool of claim 1, wherein said controller is configured for limiting speed or power consumption so as to avoid that a maximum value for acceleration of the power tool in at least one direction is exceeded.

13. The power tool of claim 12, wherein said controller is configured for limiting acceleration in at least one spatial direction to a maximum value of 5 m/s².

14. The power tool of claim 1, wherein at least one sensor is provided which is selected from the group consisting of an acceleration sensor in one, two or three directions, a rotational acceleration sensor, an amperage sensor, a speed sensor, a voltage sensor and a phase sensor for controlling phase angle of a power supply.

15. The power tool of claim 4, wherein said start-up mode is run at least during a first start-up of said power tool.

16. The power tool of claim 4, wherein said controller is configured for automatically activating said start-up mode depending on a particular condition.

17. The power tool of claim 4, wherein said controller is configured for automatically activating said start-up mode depending on a condition selected form the group consisting of each new start of the controller and each new connection of the power tool to an external power supply.

19. The power tool of claim 1, further comprising:

a storage for storing characteristic values for vibrations caused by particular tools of said plurality of different tools;

wherein said controller is configured for comparing said output signal of said at least one sensor with said stored characteristic values for vibrations and for generating said control signal for controlling said at least one operating parameter of said power tool according to said comparison.

18. A hand-held power tool, comprising:

a controller for controlling said power tool;

at least one sensor for detecting vibrations of said power tool and for generating an output signal characteristic for said vibrations;

wherein said power tool is configured for operating with a plurality of different tools;

wherein said controller is coupled to said at least one sensor and is configured for evaluating said output signal to generate at least one control signal for controlling at least one operating parameter of said power tool depending on said evaluation of said output signal of said at least one sensor.

20. A method of controlling a power tool, comprising the steps of:

detecting at least one characteristic value for vibrations;

storing said at least one characteristic value for each one of a plurality of different tools with which the power tool can be operated;

comparing said stored characteristic value with a characteristic value for vibrations with a tool currently received on the power tool and generating a control signal thereby; and

controlling at least one operating parameter of the power tool using said control signal.