Electric power tool having a switching device

Patent metadata

Field	Value
Publication number	US-9919409-B2
Application number	US-201514644648-A
Country	US
Kind code	B2
Filing date	Mar 11, 2015
Priority date	Apr 11, 2014
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

An electric power tool has a tool housing and a drive motor configured to drive an insert tool. The drive motor is switched on and off by an electric switch actuated by a switching device. The switching device has at least one switching slide with a first end and a second end. The first end has a receiver configured to receive an operating element. The second end is connected to an actuating element configured to actuate the electric switch. The receiver has a first region that tapers into a second region. The operating element has a connecting web connected to a holding element. The holding element has an extent that is less than or equal to an assigned extent of the first region. The connecting web has an extent that is less than or equal to an assigned extent of the second region.

First claim

What is claimed is:

1. An electric power tool, comprising:
a tool housing;
a drive motor arranged in the tool housing, the drive motor configured to drive an assigned insert tool;
an electric switch configured to switch on and off the drive motor; and
a switching device configured to actuate the electric switch, the switching device having at least one switching slide arranged in a longitudinally displaceable manner on the tool housing, the at least one switching slide having a first axial end and a second axial end opposite the first axial end, wherein:
the first axial end of the at least one switching slide has at least one receiver configured to at least partially receive an operating element, the at least one receiver having at least one first region that tapers into at least one second region,
the operating element having at least one connecting web connected to at least one holding element, the at least one holding element having, in a transverse direction of the operating element, an extent that is less than or equal to an assigned extent of the first region, and the connecting web having, in the transverse direction of the operating element, an extent that is less than or equal to an assigned extent of the second region, and
the second axial end of the at least one switching slide is connected to an actuating element configured to actuate the electric switch.

2. The electric power tool according to claim 1 , wherein the extent of the holding element is greater than the extent of the second region.

3. The electric power tool according to claim 1 , wherein the at least one connecting web and the at least one holding element are at least approximately shaped as a T on a side of the operating element that faces toward the tool housing.

4. The electric power tool according to claim 1 , wherein the at least one connecting web and the at least one holding element are integral with the operating element.

5. The electric power tool according to claim 1 , wherein an end stop is provided to limit travel of the switching device in at least one of switching-on and switching-off the drive motor.

6. The electric power tool according to claim 1 , wherein:
the operating element is configured to cooperate with the housing to prevent rotation of the operating element with respect to the tool housing.

7. The electric power tool according to claim 1 , wherein:
the tool housing has an opening,
the at least one connecting web is arranged at least partially in the opening,
the opening has at least one first and one second region, and
an extent of the second region, in a transverse direction of the tool housing, is configured to cooperate with the extent of the at least one connecting web, in the transverse direction of the operating element, to prevent rotation of the operating element with respect to the tool housing.

8. The electric power tool according to claim 7 , wherein the opening and the at least one receiver have at least approximately matching dimensions.

9. The electric power tool according to claim 1 , wherein the switching slide and the operating element have a coding configured to facilitate mounting the operating element on the switching slide in the correct position.

10. The electric power tool according to claim 9 , wherein the coding has at least one of at least one width asymmetry and at least one geometric asymmetry.

11. The electric power tool according to claim 1 , wherein a side of the operating element that faces toward the tool housing has at least one extent that has a curved cross section.

12. The electric power tool according to claim 1 , further comprising: a restoring spring configured to exert a restoring force upon the switching device to prevent the operating element from separating from the switching slide.

13. The electric power tool according to claim 12 , wherein the restoring spring is integrated into the electric switch.

14. The electric power tool according to claim 12 , wherein the restoring spring is connected to the switching slide and the tool housing.

15. An electric power tool, comprising:
a tool housing;
a drive motor arranged in the tool housing, the drive motor configured to drive an assigned insert tool;
an electric switch configured to switch on and off the drive motor; and
a switching device configured to actuate the electric switch, the switching device having at least one switching slide arranged in a longitudinally displaceable manner on the tool housing, the at least one switching slide having a first axial end and a second axial end opposite the first axial end, wherein:
the first axial end of the at least one switching slide has at least one receiver configured to at least partially receive an operating element, the at least one receiver having at least one first region that tapers into at least one second region,
the operating element having at least one connecting web connected to at least one holding element, the at least one holding element having, in a transverse direction of the operating element, an extent that is less than or equal to an assigned extent of the first region, and the connecting web having, in the transverse direction of the operating element, an extent that is less than or equal to an assigned extent of the second region,
the at least one connecting web and the at least one holding element are at least approximately shaped as a T on a side of the operating element that faces toward the tool housing, and
the second axial end of the at least one switching slide is connected to an actuating element configured to actuate the electric switch.

16. An electric power tool, comprising:
a tool housing;
a drive motor arranged in the tool housing, the drive motor configured to drive an assigned insert tool;
an electric switch configured to switch on and off the drive motor; and
a switching device configured to actuate the electric switch, the switching device having at least one switching slide arranged in a longitudinally displaceable manner on the tool housing, the at least one switching slide having a first axial end and a second axial end opposite the first axial end, wherein:
the first axial end of the at least one switching slide has at least one receiver configured to at least partially receive an operating element, the at least one receiver having at least one first region that tapers into at least one second region,
the operating element having at least one connecting web connected to at least one holding element, the at least one holding element having, in a transverse direction of the operating element, an extent that is less than or equal to an assigned extent of the first region, and the connecting web having, in the transverse direction of the operating element, an extent that is less than or equal to an assigned extent of the second region,
a side of the operating element that faces toward the tool housing has at least one extent that has a curved cross section, and
the second axial end of the at least one switching slide is connected to an actuating element configured to actuate the electric switch.

Assignees

• Bosch Gmbh Robert

Inventors

• Schomisch Thomas
• Lutz Manfred

Classifications

• 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

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title