IP Library › Granted Patent US 7,828,185
Granted Patent B2
US 7,828,185 · App. 10/554,338 · Granted Nov 9, 2010

Electrical hand power tool with battery pack

Assignee: Robert Bosch GmbH
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Quick Facts
Patent No.
US 7,828,185
App. No.
10/554,338
Granted
Nov 9, 2010
Kind
B2
Abstract

The invention relates to a hand power tool ( 2 ), having a housing ( 6 ), an electric motor accommodated in the housing ( 6 ), and a battery pack ( 4 ), releasably locked to the housing ( 6 ), for supplying the electric motor with electric current. At least one spring/damping element ( 38 ), mounted between the battery pack ( 4 ) and the housing ( 6 ) of the hand power tool ( 2 ), is provided, for damping vibration and -or eliminating a locking-dictated play between the battery pack ( 4 ) and the housing ( 6 ).

Claims (11)

1. A hand power tool, having a housing ( 6 ), an electric motor accommodated in the housing, a battery pack ( 4 ), releasably locked to the housing with a detent-locking device ( 26 ) and having detent elements ( 30 ), for supplying the electric motor with electric current, and at least one spring-like damping element ( 38 ), mounted between the battery pack ( 4 ) and the housing ( 6 ) of the hand power tool ( 2 ), for damping vibration and for eliminating a locking-dictated play between the battery pack ( 4 ) and the housing ( 6 ), wherein said at least one spring-like damping element ( 38 ) is provided in said housing and is integrally joined to said housing ( 6 ) and wherein the at least one spring-like damping element ( 38 ) is configured to rest against a surface ( 42 ) of the detent-locking device ( 24 ) and is deformable in a direction (R) of deflection of the detent elements ( 30 ) upon locking together of the battery pack ( 4 ) and the housing ( 6 ).

2. The hand power tool according to claim 1 , characterized in that at least one spring-like damping element ( 38 ) enters into touch engagement with the battery pack ( 4 ) upon locking together of the battery pack ( 4 ) and the housing ( 6 ).

3. The hand power tool according to claim 2 , characterized in that the spring-like damping element ( 38 ) enters into touch engagement with a surface ( 42 ) oriented substantially perpendicular to a primary vibration direction (P) of the hand power tool.

4. The hand power tool according to claim 3 , characterized in that the surface ( 42 ) is inclined or rounded.

5. The hand power tool according to claim 1 , characterized in that the spring-like damping element ( 38 ) is deformable in a direction that corresponds to a primary vibration direction (P) of the hand power tool.

6. The hand power tool according to claim 1 , characterized in that the spring-like damping element ( 38 ) is deformable in a direction that is perpendicular to a direction (R) of a deflection of detent elements ( 32 ) upon locking together of the battery pack ( 4 ) and the housing ( 6 ).

7. The hand power tool according to claim 1 , characterized in that the spring-like damping element ( 38 ) comprises a rubber-elastic material.

8. The hand power tool according to claim 1 , characterized in that the spring-like damping element ( 38 ) comprises a material that is joined integrally to the housing ( 6 ) by injection molding.

9. The hand power tool according to claim 1 , characterized in that the spring-like damping element ( 38 ) comprises a thermoplastic elastomer.

10. The hand power tool according to claim 1 , characterized in that a plurality of spring-like damping elements ( 38 ) are spaced apart from one another and integrally joined to the housing.

11. The hand power tool according to claim 1 , characterized in that the spring-like damping element comprises one spring element and one damping element.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2007
From: HOFMANN, ALBRECHT; KRONDORFER, HARALD; SCHADOW, JOACHIM; SCHOMISCH, THOMAS
To: ROBERT BOSCH GMBH
Reel/Frame 018834/0317 →
Priority Claims (1)
DE 103 18 947 · Apr 26, 2003 · national
Continuity (1)
Related Publication 20080099224A1 · May 1, 2008