Impact damping device for a rechargeable battery

Patent metadata

Field	Value
Publication number	US-12567633-B2
Application number	US-202118015787-A
Country	US
Kind code	B2
Filing date	Jul 12, 2021
Priority date	Jul 22, 2020
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A power tool, in particular a chipping hammer, having a housing and a battery interface device for releasably connecting at least one rechargeable battery to the power tool. An impact damping device is contained between the housing and the battery interface device, wherein the impact damping device contains at least one damping element which is arranged in a longitudinal extent perpendicularly to a working axis of the power tool.

First claim

What is claimed is:

1 . A power tool comprising:
a housing; a battery interface device for releasably connecting at least one rechargeable battery to the power tool; and a damper device for absorbing and damping impacts acting on the at least one rechargeable battery, the damper contained between the housing and the battery interface device; the damper device having a first hinge and a second hinge and a damper.

2 . The power tool as recited in claim 1 wherein the damper device contains at least one damper arranged in a longitudinal extent perpendicularly to a working axis of the power tool.

3 . The power tool as recited in claim 2 wherein the at least one damper is configured cylindrically with an oval cross-sectional area.

4 . The power tool as recited in claim 2 wherein the at least one damper has at least one axially extending groove on an outer lateral surface.

5 . The power tool as recited in claim 2 wherein the at least one damper at least partially contains an elastic material.

6 . The power tool as recited in claim 2 wherein the at least one damper is configured in the form of a spring element.

7 . The power tool as recited in claim 6 wherein the at least one damper is a coil spring element.

8 . A chipping hammer comprising the power tool as recited in claim 1 .

9 . The power tool as recited in claim 1 wherein the damper device includes at least one damper configured cylindrically with an oval cross-sectional area.

10 . The power tool as recited in claim 1 wherein the damper device includes at least one damper having at least one axially extending groove on an outer lateral surface.

11 . The power tool as recited in claim 1 wherein the damper device includes at least one damper having at least partially an elastic material.

12 . The power tool as recited in claim 1 wherein the damper device includes at least one damper having a spring element.

13 . The power tool as recited in claim 12 wherein the at least one damper is a coil spring element.

14 . The power tool as recited in claim 1 wherein the battery interface device has a first connector for receiving a first rechargeable battery and a second connector for receiving a second rechargeable battery.

15 . The power tool as recited in claim 1 wherein the battery interface device contains a planar base plate.

16 . The power tool as recited in claim 1 wherein the first hinge has a first pin and the second hinge has a second pin.

17 . The power tool as recited in claim 16 wherein the first hinge has a first upper hinge band, a second upper hinge band, and a first lower hinge band, and the second hinge has a third upper hinge band, a fourth upper hinge band, and a second lower hinge band.

18 . The power tool as recited in claim 17 where the first pin is arranged between the first upper hinge band, the second upper hinge band, and the first lower hinge band, and the second pin is arranged between the third upper hinge band, the fourth upper hinge band, and the second lower hinge band.

19 . A power tool comprising:
a housing; a battery interface device for releasably connecting at least one rechargeable battery to the power tool, the battery interface device containing a planar base plate, a first connector for receiving a first rechargeable battery, and a second connector for receiving a second rechargeable battery; and a damper device for absorbing and damping impacts acting on first and second rechargeable batteries, the damper contained between the housing and the battery interface device.

Assignees

• Hilti Ag

Inventors

• Bader Thomas
• Doberenz Matthias
• Tussing Torsten
• Schöpke Sören
• Brandner Michael

Classifications

• H01M50/244

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title

• H01M50/247

  specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• B25D2250/121

  Housing details · CPC title

• B25F5/006

  Vibration damping means · CPC title