Contact element

• US 8,323,039 B2
• Filed: 02/29/2008
• Issued: 12/04/2012
• Est. Priority Date: 03/01/2007
• Status: Expired due to Fees

• Current Assignee: Schunk Kohlenstofftechnik GmbH (Ludwig Schunk Stiftung E.V.)
• Original Assignee: Schunk Kohlenstofftechnik GmbH (Ludwig Schunk Stiftung E.V.)
• Inventors: Lippert, Hans, Neuweger, Henrik, Ringleb, Ulrich
• Primary Examiner(s): Luebke, Renee S
• Assistant Examiner(s): Tsukerman, Larisa Z
• Application Number:
  US12/040,790
• Publication Number:
  US 20080214032A1
• Time in Patent Office: 1,740 Days
• Field of Search: 439/736, 439/110, 439/121, 439/162, 200/252, 200/264, 200/266, 200/262
• US Class Current: 439/110
• CPC Class Codes: H01R 25/142 Their counterparts
• CPC Class Codes: H01R 39/20 characterised by the material thereof
• CPC Class Codes: H01R 41/00 Non-rotary current collectors for maintaining contact between moving and stationary parts of an electric circuit end pieces terminating in a hook or the like H01R11/12; current collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: H01R 43/24 Assembling by moulding on contact members

Abstract

The invention concerns a contact element (10) with a sliding contact element (11) for fitting flush against an electrically conductive rail and a support element (12) for connecting the sliding contact to a contact plug (13), which serves as a connector to an electric conductor, wherein the sliding contact element, the support element, and the contact plug are parts of a molded part which is constructed as a single unit.

Claims

1. An electrically conductive contact element, comprising:

a compression molded electrically conductive part formed in a single molding step, wherein the single molded part comprises;

a sliding electrical contact portion for fitting flush and sliding against an electrically conductive rail, wherein the sliding contact electrical portion is disposed at one end of the compression molded electrically conductive part;

a contact pin portion that serves as a connector to an electric conductor, wherein the contact pin portion is disposed at another end of the compression molded electrically conductive part; and

a support portion for electrically connecting the sliding electrical contact portion to the contact pin portion, wherein the support portion is attached to and materially bonded to the sliding electrical contact portion, wherein the support portion and the contact pin portion have the same material composition, wherein the sliding electrical contact portion has a material composition differing from that of the support portion and the contact pin, and wherein the contact pin portion is materially bonded to the support portion.

2. The contact element as recited in claim 1, wherein the sliding electrical contact element, the support portion, or the contact pin portion has a gradient of material concentration of the components in the material composition thereof.

3. The contact element as recited in claim 2, wherein the material composition of the contact pin portion incorporates a gradient such that a greater concentration of the components in the material composition that affect solderability is present in the free end of the contact pin portion.

4. The contact element as recited in claim 1, wherein at least sections of the contact pin portion have a circular cross section in the direction of the current flow.