IP Library Granted Patent US 12661773
Granted Patent B2
US 12661773 · App. 18/714,684 · Granted Jun 23, 2026

Energy supply device having a rotatably mounted locking element and power tool for connection to such an energy supply device

Inventors: Markus Hartmann (Mauerstetten, DE); Rory Britz (Starnberg, DE); Markus Holubarsch (Landsberg am Lech, DE); David Klingen (Munich, DE); Robert Stanger (Kaufbeuren, DE); Stefan Schmid (Untermühlhausen, DE); Bernhard Liebert (Pfaffenhofen A.D. Glonn, DE); Ali Schad (Munich, DE); Uwe Hainke (Dresden, DE)
Assignee: Hilti Aktiengesellschaft
B25F5/02H01M50/247H01M50/262H01M2220/30
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Quick Facts
Patent No.
US 12661773
App. No.
18/714,684
Granted
Jun 23, 2026
Kind
B2
Abstract

An energy supply device is provided, in particular for a power tool, the energy supply device being detachably connectable to the power tool. The energy supply device includes at least one element for locking the energy supply device in the power tool, wherein the at least one locking element is mounted rotatably about at least one first axis of rotation, wherein the first axis of rotation runs through a pivot point of the at least one locking element. In this case, the pivot point of the locking element precedes a locking location in an insertion direction. The energy supply device has at least one element for actuation by a user, wherein the at least one actuating element is mounted rotatably about at least one second axis of rotation which runs through a pivot point of the actuating element. In this case, the pivot point of the at least one locking element can precede a locking location in an insertion direction. In a second aspect, the invention relates to a power tool having a energy supply device.

Claims (18)

1 . An energy supply device for a power tool, the energy supply device being detachably connectable to the power tool, the energy supply device comprising:

a lock element for locking the energy supply device in the power tool, the lock element being mounted rotatably about a first axis of rotation, the first axis of rotation running through a pivot point of the lock element, the pivot point of the lock element preceding a locking location defined by a locking contact surface during insertion in an insertion direction so that the pivot point enters the energy supply device before the locking contact surface; and

an actuator for actuation by a user, wherein the actuator is mounted rotatably about a second axis of rotation, the second axis of rotation running through a pivot point of the actuator.

2 . The energy supply device as recited in claim 1 wherein the lock element is set up to be received in a locking position by an undercut in the power tool.

3 . The energy supply device as recited in claim 1 wherein the lock element is bringable from a release position into a locking position, or vice versa, by rotation about the pivot point.

4 . The energy supply device as recited in claim 1 wherein the pivot point of the actuator follows the locking location in the insertion direction.

5 . The energy supply device as recited in claim 1 wherein the lock element and the actuator form a lock mechanism designed at least in two parts.

6 . The energy supply device as recited in claim 1 wherein the axis of rotation of the lock element and the axis of rotation of the actuator are parallel.

7 . The energy supply device as recited in claim 1 wherein the lock element has a bulge and the actuator has a protruding region, the lock element set up to at least partially receive the actuator in a locking position.

8 . The energy supply device as recited in claim 1 wherein the lock element is bringable from a locking position into a release position by actuation of the actuator.

9 . The energy supply device as recited in claim 1 further comprising a prestressing element set up to press the lock element or the actuator into an undercut in the power tool, or wherein the lock element or the actuator is bringable from a release position into a locking position by the prestressing element.

10 . The energy supply device as recited in claim 9 wherein the prestressing element is a spring.

11 . The energy supply device as recited in claim 1 wherein a sum of the lengths L 2 and L 3 is greater than a distance L 1 between the pivot point of the lock element and the pivot point of the actuator, wherein the length L 2 corresponds to the distance between the pivot point of the lock element and a tip of the lock element and the length L 3 to the distance between the pivot point of the actuator and a tip of the actuator.

12 . A power tool for connection to the energy supply device as recited in claim 1 , the power tool comprising an undercut forming a receiving space for the lock element of the energy supply device.

13 . The power tool as recited in claim 12 wherein the undercut is arranged in a region of a receiving device of the power tool.

14 . A power tool in combination with the energy supply device as recited in claim 1 , the power tool comprising an undercut forming a receiving space for the lock element of the energy supply device, the energy supply device when inserted having the pivot point of the lock element further inside the power tool than the locking location.

15 . The power tool in combination with the energy supply device as recited in claim 14 , wherein the second axis of rotation is separate from the first axis of rotation and located outside the power tool.

16 . The energy supply device as recited in claim 1 comprising a front side for insertion in the insertion direction into the power tool and a rear side opposite the front side, the pivot point of the lock element thus being closer to the front side than the locking location.