Spindle locking device

1. A spindle locking device for a portable machine tool, comprising:

a locking unit including a movably mounted locking element configured to lock a spindle of the portable machine tool in at least one direction, and an operating element configured to actuate the locking element; and

a movement activation unit configured to pretension the locking element in a direction towards a locking position, at least when the operating element is in an unactuated position,

wherein the locking element is configured such that the locking element can only be moved into a released position by a pivoting movement of the operating element relative to the locking element about a motional axis of the operating element in which the operating element pivots from the unactuated position to an actuated position.

2. The spindle locking device as claimed in claim 1 , wherein the movement activation unit includes a spring element configured to subject the locking element to a spring force in the direction towards the locking position.

3. The spindle locking device as claimed in claim 1 , wherein the movement activation unit includes a holding element configured to hold the operating element in an actuated position.

4. The spindle locking device as claimed in claim 3 , wherein:

the operating element includes a counter-holding element which corresponds with the holding element; and

the counter-holding element is configured to interact with the holding element to hold the operating element in an actuated position.

5. The spindle locking device as claimed in claim 1 , wherein the movement activation unit includes a holding element configured as a spring-loaded latching bolt.

6. The spindle locking device as claimed in claim 1 , wherein the movement activation unit includes an actuating projection configured to hold the locking element in a release position.

7. The spindle locking device as claimed in claim 6 , wherein the actuating projection is positioned on the operating element eccentrically with respect to a motional axis of the operating element.

8. The spindle locking device as claimed in claim 1 , wherein the operating element is configured to be pivotably mounted to the portable machine tool.

9. The spindle locking device as claimed in claim 1 , wherein the locking element includes a locking recess configured to lock the spindle via a positive connection in order to prevent movement in at least one direction.

10. The spindle locking device as claimed in claim 1 , wherein the operating element is configured as a cam such that pivoting the operating element from the unactuated position to the actuated position urges the locking element against the pretension of the movement activation unit along a linear path from the locking position to the released position.

11. A portable machine tool comprising:

a spindle locking device, including:

a locking unit having a movably mounted locking element configured to lock a spindle of the portable machine tool in at least one direction, and an operating element configured to actuate the locking element; and

a movement activation unit configured to pretension the locking element in a direction towards a locking position, at least when the operating element is in an unactuated position,

wherein the locking element is configured such that the locking element can only be moved into a released position by a pivoting movement of the operating element relative to the locking element about a motional axis of the operating element in which the operating element pivots from an unactuated position to an actuated position.