Sensor Device, in Particular Hand-Held Power-Tool Sensor Device

Patent metadata

Field	Value
Publication number	US-2016089757-A1
Application number	US-201514863754-A
Country	US
Kind code	A1
Filing date	Sep 24, 2015
Priority date	Sep 25, 2014
Publication date	Mar 31, 2016
Grant date	—

Abstract

The disclosure is based on a sensor device, in particular a hand-held power-tool sensor device, for identifying an uncontrolled occurrence of jamming in the case of a hand-held power tool, having at least one sensor unit, which is provided to sense at least one motion characteristic value of the hand-held power tool, and having a protective unit, which is provided to control the hand-held power tool in dependence on at least one triggering threshold value and the at least one motion characteristic value. It is proposed that the protective unit be provided to set the at least one triggering threshold value in a variable manner and/or to define at least one further triggering threshold value.

First claim

What is claimed is:

1 . A sensor device of a hand-held power-tool for identifying an uncontrolled occurrence of jamming of the hand-held power tool, the sensor device comprising:
at least one sensor unit configured to sense at least one motion characteristic value of the hand-held power tool; and a protective unit configured to control the hand-held power tool based on at least one triggering threshold value and the at least one motion characteristic value, the protective unit being configured to at least one of (i) set the at least one triggering threshold value in a variable manner and (ii) define at least one further triggering threshold value.

2 . The sensor device according to claim 1 , wherein the protective unit is configured to set the at least one triggering threshold value based on a triggering frequency.

3 . The sensor device according to claim 1 , wherein the protective unit is configured to reset the at least one triggering threshold value after operation of the hand-held power tool.

4 . The sensor device according to claim 1 , wherein the protective unit is configured to set the at least one triggering threshold value based on at least one operating mode of the hand-held power tool.

5 . The sensor device according to claim 1 , wherein the protective unit is configured to set the at least one triggering threshold value based on at least one transmission characteristic value of the hand-held power tool.

6 . The sensor device according to claim 1 , wherein the protective unit is configured to set the at least one triggering threshold value based on at least one rotational-speed characteristic value of the hand-held power tool.

7 . The sensor device according claim 1 , further comprising:
at least one operating-mode sensor unit configured to sense at least one operating mode of the hand-held power tool, wherein the protective unit is configured to set the at least one triggering threshold value based on the at least one operating mode of the hand-held power tool.

8 . The sensor device according to claim 1 , wherein the protective unit is configured to control the hand-held power tool differentially based on the at least one triggering threshold value and the at least one motion characteristic value, and based on the at least one further triggering threshold value and the at least one motion characteristic value.

9 . A hand-held power tool comprising:
a sensor device for identifying an uncontrolled occurrence of jamming of the hand-held power tool, the sensor device comprising:
at least one sensor unit configured to sense at least one motion characteristic value of the hand-held power tool; and
a protective unit configured to control the hand-held power tool based on at least one triggering threshold value and the at least one motion characteristic value, the protective unit being configured to at least one of (i) set the at least one triggering threshold value in a variable manner and (ii) define at least one further triggering threshold value.

10 . A method for identifying an uncontrolled occurrence of jamming of a hand-held power tool, the method comprising:
sensing at least one motion characteristic value of the hand-held power tool; controlling the hand-held power tool using a protective unit in based on at least one triggering threshold value and the at least one motion characteristic value; and at least one of:
setting the at least one triggering threshold value in a variable manner using the protective unit; and
defining at least one further triggering threshold value using the protective unit.

11 . The hand-held power tool of claim 9 , wherein the hand-held power tool is a hammer drill.

Assignees

• Bosch Gmbh Robert

Inventors

• Wirnitzer Bernd
• Tauber Matthias
• Wiess Christopher
• Klee Christoph
• Keinath Hagen Philipp
• Lang Christian
• Schlegel Andreas
• Holst Stefan

Classifications

• B25D16/00 Primary

  Portable percussive machines with superimposed rotation {, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit (combined percussion and rotary drilling adapted for earth drilling E21B6/00)} · CPC title

• B23Q11/0078 Primary

  Safety devices protecting the operator, e.g. against accident or noise (protecting the machine tool B23Q5/58; protecting people, in general F16P1/00, F16P3/00) · CPC title

• B23Q11/0092

  actuating braking or stopping means · CPC title

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• B25D2250/221

  Sensors · CPC title