Hand-held power tool device

• US 9,802,305 B2
• Filed: 06/25/2014
• Issued: 10/31/2017
• Est. Priority Date: 06/28/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Diem, Carsten, Keinath, Hagen Philipp, Tauber, Matthias
• Primary Examiner(s): Chukwurah, Nathaniel
• Application Number:
  US14/315,084
• Publication Number:
  US 20150000943A1
• Time in Patent Office: 1,224 Days
• Field of Search: 173 11
• CPC Class Codes: B25D 16/00 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 Class Codes: B25D 2216/0069 Locking means
• CPC Class Codes: B25D 2250/221 Sensors

Abstract

A hand-held power tool device comprises an impact tool unit, an impact detection unit, and a blocking detection unit. The impact tool unit is configured to drive an insertion tool at least partially in at least one of a rotational fashion and a translatory fashion. The impact detection unit is configured to detect at least one impact parameter, such as linear acceleration running at least substantially parallel to a processing axis of the insertion tool. The blocking detection unit is configured to detect at least one blocking parameter, such as at least one an angular acceleration about the processing axis of the insertion tool. The impact detection unit and the blocking detection unit are formed at least partially as one-piece.

Claims

1. A hand-held power tool device, comprising:

an insertion tool;

an impact tool unit configured to drive the insertion tool at least partially in at least one of a rotational fashion and a translatory fashion;

an impact detection unit configured to detect at least one impact parameter, wherein the at least one impact parameter is a linear acceleration running at least substantially parallel to a processing axis of the insertion tool with respect to a housing of the hand-held power tool device;

a blocking detection unit configured to detect at least one blocking parameter, wherein the at least one blocking parameter is an angular acceleration about the processing axis of the insertion tool with respect to the housing of the hand-held power tool device; and

a sensor element configured to detect both the linear acceleration and the angular acceleration.

2. The hand-held power tool device according to claim 1, wherein the sensor element is an acceleration sensor.

3. The hand-held power tool device according to claim 2, wherein the sensor element is at a three-axis acceleration sensor.

4. The hand-held power tool device according to claim 1, wherein the sensor element is configured to detect a spatial position of the impact tool unit.

5. The hand-held power tool device according to claim 4, further comprising at least one of:

(i) at least one open-loop control unit configured to perform open-loop control of the impact tool unit at least partially as a function of the spatial position of the impact tool unit; and

(ii) at least one closed-loop control unit configured to perform closed-loop control of the impact tool unit at least partially as a function of the spatial position of the impact tool unit.

6. A blocking detection unit of a hand-held power tool device according to claim 1.

7. A hand-held power tool, comprising:

at least one hand-held power tool device, including;

an insertion tool;

an impact tool unit configured to drive the insertion tool at least partially in at least one of a rotational fashion and a translatory fashion;

an impact detection unit configured to detect at least one impact parameter, wherein the at least one impact parameter is a linear acceleration running at least substantially parallel to a processing axis of the insertion tool with respect to a housing of the at least one hand-held power tool device;

a blocking detection unit configured to detect at least one blocking parameter, wherein the at least one blocking parameter is an angular acceleration about the processing axis of the insertion tool with respect to the housing of the at least one hand-held power tool device;

a sensor element configured to detect both the linear acceleration and the angular acceleration; and

a control unit that performs open-loop or closed-loop control of the impact tool unit as a function of the linear acceleration and the angular acceleration detected by the sensor element.

8. An impact detection unit of a hand-held power tool device comprising:

(i) an insertion tool, (ii) an impact tool unit configured to drive the insertion tool at least partially in at least one of a rotational fashion and a translatory fashion, and (iii) a blocking detection unit configured to detect at least one blocking parameter,

wherein;

the impact detection unit is configured to detect at least one impact parameter;

the at least one impact parameter is a linear acceleration running at least substantially parallel to a processing axis of the insertion tool with respect to a housing of the at least one hand-held power tool device;

the at least one blocking parameter is an angular acceleration about the processing axis of the insertion tool with respect to the housing of the at least one hand-held power tool device; and

wherein a sensor element is configured to detect both the linear acceleration and the angular acceleration.