US 7,537,466 B2
	Plug with retainer spring for an earth contact
Mario Bartholoma, Winden (Germany); Fritz Zugel, Waldkirch (Germany); and Achim Hoch, Waldkirch (Germany)
Assigned to Anton Hummel Verwaltungs GmbH, Waldkirch (Germany)
Appl. No. 11/994,468 PCT Filed Jul. 12, 2006, PCT No. PCT/EP2006/006810 § 371(c)(1), (2), (4) Date Jan. 02, 2008, PCT Pub. No. WO2007/019918, PCT Pub. Date Feb. 22, 2007.
Claims priority of application No. 20 2005 012 756 U (DE), filed on Aug. 12, 2005.
Prior Publication US 2008/0214028 A1, Sep. 04, 2008
Int. Cl. H01R 4/66 (2006.01)

U.S. Cl. 439—95

14 Claims

1. Plug (1) comprising a bushing (2) and an insulating body (3) arranged in the position of use in the bushing (2), and also with elongated contacts (4), which are held in perforations or boreholes (6) of the insulating body that extend in an axial direction, wherein one of the contacts is arranged as a ground contact (5) parallel to other ones of the contacts (4) within one of the perforations or boreholes (6), which has a lateral opening (8) for an electrically conductive retainer spring (9) that fixes the ground contact (5) in the position of use in the perforation or borehole (6), the retainer spring (9) has a plug-in part (10), which allows passage in an axial direction and which is arranged in the position of use within the one of the perforations or boreholes (6) of the insulating body (3) and has an open inner cross section that corresponds approximately to an outer cross section of the ground contact (6) which is generally pin-shaped and which is located in the position of use within the insulating body (3) in alignment with or coaxial to the one of the openings or perforations (6) of the insulating body (3) for the ground contact (5), so that the ground contact can be plugged in during the insertion into the perforation or borehole (6) for the ground contact in the plug-in part (10), and the plug-in part (10) of the retainer spring (9) fits and is insertable through the lateral opening (8) in a direction perpendicular to the perforations or boreholes (6) of the insulating body (3) and carries at least one spring arm (11), which extends in the axial direction on an outside thereof and which has, on a free end of the spring arm (11) projecting past the plug-in part (10), a projection (12) that is directed inwardly in a radial direction and that extends into a plug-in path of the ground contact (5) and acts on the ground contact (5) in the position of use in a fixing manner, and the ground contact (5) has, at the position acted upon by the projection (12) of the spring arm (11), a recess or depression (7) and a pivot path of the spring arm (11) corresponds at least to an engagement depth of the projection (12) into the recess or depression (7).