Electric device, in particular electric handheld power tool

• US 7,883,355 B2
• Filed: 04/27/2006
• Issued: 02/08/2011
• Est. Priority Date: 05/02/2005
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Glauning, Rainer, Rejman, Marcin, Matthias, Wolf
• Primary Examiner(s): Nguyen; Truc T
• Application Number:
  US11/412,687
• Publication Number:
  US 20060244318A1
• Time in Patent Office: 1,748 Days
• Field of Search: 439152-155, 439/435, 439159-160, 439/700
• US Class Current: 439/435
• CPC Class Codes: H01M 50/202 Casings or frames around the primary casing of a single cell or a single battery
• CPC Class Codes: H01M 50/296 characterised by terminals of battery packs terminals of batteries H01M50/543
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electric device has an electric unit having a receiving region, a power supply unit received by the receiving region of the electric unit in a receiving direction, contact units for making an electrical connection between the power supply unit and said electric unit, unit for counteracting a motion of the contact units, which is movable relative to the electric unit in the receiving direction, relative to the power supply unit located on the receiving region, and within a region intended for the motion.

Claims

1. An electric device, comprising:

an electric unit having a receiving region;

a power supply unit received by said receiving region of said electric unit in a receiving direction;

said power supply unit being movable relative to said electric unit in said receiving direction in assembled position within a region intended for a motion;

contact means for making an electrical connection between said power supply unit and said electric unit, said contact means being movable relative to said electric unit in said receiving direction in assembled position within the region intended for the motion;

and means for counteracting a motion of said contact means relative to said power supply unit located on said receiving region,

wherein said means for counteracting is configured for forcing said contact means to move along the receiving direction with said power supply unit.

2. An electric device as defined in claim 1, wherein said means for counteracting is configured for pressing said contact means against said power supply unit located on said receiving region.

3. An electric device as defined in claim 1, wherein said means for counteracting is configured for counteracting the motion of said contact means relative to said electric unit and when said power supply unit has been removed.

4. An electric device as defined in claim 1, wherein said means for counteracting is configured at least as a spring.

5. An electric device as defined in claim 1, wherein said means for counteracting is configured so as to be kept on said contact means by form-locking engagement.

6. An electric device as defined in claim 1, wherein the electrical device is configured as an electric handheld power tool.

7. An electric device as defined in claim 1, wherein said means for counteracting is configured at least as a leaf spring.

8. An electric device as defined in claim 4, wherein said spring, in a tensed state, is in contact with at least two portions of said electric unit.

9. An electric device as defined in claim 8, wherein said portions of said electric unit each have a rounded surfaces.

10. An electric device as defined in claim 7, wherein said spring is configured so that it is kept with initial stress on said contact means.

11. An electric device, comprising an electric unit having a receiving region;

a power supply unit received by said receiving region of said electric unit in a receiving direction;

contact means for making an electrical connection between said power supply unit and said electric unit, said contact means being movable relative to said electric unit in said receiving direction within a region intended for the motion; and

means for counteracting a motion of said contact means relative to said power supply unit located on said receiving region, wherein said means for counteracting is configured at least as a leaf spring, wherein said spring is configured as an ejection spring for ejecting said power supply unit.