Machine tool

Patent metadata

Field	Value
Publication number	US-10195703-B2
Application number	US-201214367340-A
Country	US
Kind code	B2
Filing date	Nov 15, 2012
Priority date	Dec 23, 2011
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

A machine tool, in particular an angle grinder, includes at least one switching unit that has at least one movably mounted ratchet element and at least one release element for unlocking a movement preventer of the ratchet element. The release element has at least one actuating region that is at least partially arranged laterally alongside an operating area of the ratchet element.

First claim

The invention claimed is:

1. A power tool, comprising:
at least one switching unit including:
at least one movably mounted latch element having a transverse extent defining a first distance, and a longitudinal extent running substantially perpendicular to the transverse extent and defining a second distance that is greater than the first distance;
at least one release element having at least one actuating region and being configured to move between a locking position and an unlocking position;
a movement inhibitor configured to inhibit movement of the at least one movably mounted latch element when the at least one release element is in the locking position, and configured to permit movement of the at least one movably mounted latch element when the at least one release element is in the unlocking position; and
at least one spring element configured to apply a spring force to the at least one release element to bias the at least one release element towards the locking position,

wherein the at least one actuating region of the at least one release element is arranged, at least partially, at a distance away from an operating surface of the at least one movably mounted latch element in a direction parallel to the longitudinal extent of the at least one movably mounted latch element,
wherein the at least one release element is mounted so as to be at least one of pivotable and rotatable about at least one release movement axis that runs parallel in relation to a movement axis of the at least one movably mounted latch element, and
wherein the at least one switching unit has at least one further release element, the power tool further comprising:
at least one movement dependence unit that motionally couples the at least one release element and the at least one further release element to each other, at least when in a mounted state.

2. The power tool as claimed in claim 1 , further comprising at least one handle housing, wherein, as a result of an actuation of the at least one release element or of the at least one further release element in a direction toward the at least one handle housing, the at least one release element and the at least one further release element are moved by the at least one movement dependence unit in a direction toward the at least one handle housing.

3. The power tool as claimed in claim 1 , wherein the at least one release element and the at least one further release element are mounted so as to be movable relative to each other.

4. The power tool as claimed in claim 3 , further comprising at least one movement dependence unit configured to move the at least one release element and the at least one further release element in the same direction as a result of an actuation of the at least one release element or of the at least one further release element.

5. The power tool as claimed in claim 4 , wherein the at least one movement dependence unit rigidly couples the at least one release element to the at least one further release element.

6. The power tool as claimed in claim 1 , wherein the at least one release element has at least one unlocking receiving recess configured to receive an inhibitor element of the at least one switching unit when the at least one release element is in the unlocking position as a result of an actuation of the at least one movably mounted latch element.

7. The power tool as claimed in claim 1 , further comprising at least one handle housing, wherein the at least one actuating region of the at least one release element, after an actuation, is at least substantially flush with an outer surface of the at least one handle housing.

8. The power tool as claimed in claim 1 , further comprising at least one handle housing, wherein the at least one actuating region of the at least one release element and at least one further actuating region of at least one further release element of the at least one switching unit, after an actuation, are at least substantially flush with an outer surface of the at least one handle housing.

9. The power tool as claimed in claim 1 , wherein:
the at least one movably mounted latch element is mounted so as to be pivotable about the movement axis of the least one movably mounted latch element; and
the movement axis of the at least one movably mounted latch element is configured as a pivot axis.

10. The power tool as claimed in claim 1 , wherein the at least one release element is configured to move into the unlocking position when an external force applied to the actuating region is greater than the spring force, and is configured to move into the locking position when the external force applied to the actuating region is less than or equal to the spring force and when the at least one movably mounted latch element is released.

11. A power tool, comprising:
at least one switching unit including:
at least one movably mounted latch element having a transverse extent defining a first distance, and a longitudinal extent running substantially perpendicular to the transverse extent and defining a second distance that is greater than the first distance;
at least one release element having at least one actuating region and being configured to move between a locking position and an unlocking position;
a movement inhibitor configured to inhibit movement of the at least one movably mounted latch element when the at least one release element is in the locking position, and configured to permit movement of the at least one movably mounted latch element when the at least one release element is in the unlocking position; and
at least one spring element configured to apply a spring force to the at least one release element to bias the at least one release element towards the locking position,

wherein the at least one actuating region of the at least one release element is arranged, at least partially, at a distance away from an operating surface of the at least one movably mounted latch element in a direction parallel to the longitudinal extent of the at least one movably mounted latch element,
wherein the at least one release element is mounted so as to be at least one of pivotable and rotatable about at least one release movement axis that runs parallel in relation to a movement axis of the at least one movably mounted latch element,
wherein the at least one switching unit has at least one further release element, and
wherein the at least one further release element is arranged in a mirror-symmetrical manner in relation to the at least one release element.

12. A power tool, comprising:
at least one switching unit including:
at least one movably mounted latch element having a transverse extent defining a first distance, and a longitudinal extent running substantially perpendicular to the transverse extent and defining a second distance that is greater than the first distance;
at least one release element having at least one actuating region and being configured to move between a locking position and an unlocking position;
a movement inhibitor configured to inhibit movement of the at least one movably mounted latch element when the at least one release element is in the locking position, and configured to permit movement of the at least one movably mounted latch element when the at least one release element is in the unlocking position; and
at least one spring element configured to apply a spring force to the at least one release element to bias the at least one release element towards the locking position,

wherein the at least one actuating region of the at least one release element is arranged, at least partially, at a distance away from an operating surface of the at least one movably mounted latch

Assignees

• Bosch Gmbh Robert

Inventors

• Boeck Cornelius
• Barth Daniel
• Schadow Joachim
• Andrasic Sinisa

Classifications

• H01H2239/03

  Avoiding erroneous switching · CPC title

• B23Q5/58 Primary

  Safety devices {(protecting the operator B23Q11/0089)} · CPC title

• H01H9/286

  making use of a removable locking part acting directly on the operating part (H01H9/281 takes precedence) · CPC title

• B24B23/028 Primary

  Angle tools · CPC title

• H01H9/06

  Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner · CPC title