Pressure contact

• US 7,445,518 B2
• Filed: 05/04/2007
• Issued: 11/04/2008
• Est. Priority Date: 05/05/2006
• Status: Expired due to Fees

• Current Assignee: Lumberg Connect GmbH (Lumberg Holding GmbH & Company KG)
• Original Assignee: Lumberg Connect GmbH (Lumberg Holding GmbH & Company KG)
• Inventors: Schneider neé Hild, Anja, Taschke, Henning
• Primary Examiner(s): Gilman; Alexander
• Application Number:
  US11/800,415
• Publication Number:
  US 20070270009A1
• Time in Patent Office: 550 Days
• Field of Search: 439/700, 439/289, 439/88, 439/824, 439/826, 439/862, 257/507
• US Class Current: 439/700
• CPC Class Codes: H01R 13/2428 using meander springs
• CPC Class Codes: H01R 4/242 the contact members being plates having a single slot

Abstract

A pressure contact for making an electrical connection with another contact has two end parts spaced apart along a longitudinal axis, a central spring section having a midpoint lying on the longitudinal axis, a plurality of side spring sections at least one of which extends at an acute angle to the longitudinal axis, and a plurality of loops between and connecting the spring sections. The central and side spring sections together with the loops form a meander spring so that displacement of one of the end parts longitudinally toward the other end part tensions the meander spring.

Claims

1. A pressure contact for making an electrical connection with another contact, the pressure contact comprising:

two end parts spaced apart along a longitudinal axis;

a central spring section having a midpoint lying on the longitudinal axis;

a pair of arcuate side spring sections longitudinally between the end parts, symmetrical to the longitudinal axis, point symmetrical to the midpoint, and each having an outer end connected to a respective one of the end parts and an opposite inner end; and

respective loops between and connecting the inner ends of the side spring sections to outer ends of the central spring section, the central and side spring sections forming together with the loops a meander spring substantially point symmetrical to the midpoint, whereby displacement of one of the end parts longitudinally toward the other end part tensions the meander spring, shifts the outer ends of the side spring sections toward each other, shifts the side spring sections away from each other, and pivots the spring sections and loops about the midpoint.

2. The pressure contact defined in claim 1 wherein the central spring section extends at an acute angle across the longitudinal axis.

3. The pressure contact defined in claim 1, further comprising

a housing holding the pressure contact with one of the parts projecting from the housing in an unstressed outer position with substantially no elastic deformation of the meander spring and at least partially pushed back into the housing in a stressed inner position with the meander spring tensioned.

4. The pressure contact defined in claim 3 wherein the housing is provided with a support on which the central section is pivoted at the midpoint.

5. The pressure contact defined in claim 1 wherein the central section intersects the longitudinal axis at an angle of less than 60°

.

6. The pressure contact defined in claim 1 wherein the central section intersects the longitudinal axis at an angle less than 45°

.

7. The pressure contact defined in claim 1 wherein the central section intersects the longitudinal axis at an angle less than 30°

.

8. The pressure contact defined in claim 1 wherein the side sections are C-shaped.

9. The pressure contact defined in claim 8 wherein the side sections are concave toward each other.

10. The pressure contact defined in claim 1 wherein one of the parts has two contact feet spaced apart transversely of the axis.

11. The pressure contact defined in claim 10 wherein the feet are symmetrical to the axis.

12. The pressure contact defined in claim 1 wherein the sections and loops are unitarily formed with each other and with the parts.

13. The pressure contact defined in claim 1, further comprising

a fixed support at the midpoint supporting the central section for pivotal movement only relative to the midpoint, whereby both of the end parts can be shifted with elastic deformation of the meander spring longitudinally toward the midpoint.

14. The pressure contact defined in claim 1 wherein only one central section is connected via respective loops with two such side sections.

15. The pressure contact defined in claim 1 wherein the side sections extend at an acute angle smaller than 45°

to the longitudinal axis.

16. The pressure contact defined in claim 1 further comprising

a dielectric housing holding the pressure contact with at least one of the end parts projecting in an outer position from the housing.

17. The pressure contact defined in claim 1 wherein in an unstressed condition of the spring the central spring section lies on the axis.

18. A pressure contact for making an electrical connection with another contact, the pressure contact comprising:

two end parts spaced apart along a longitudinal axis;

a central spring section having a midpoint lying on the longitudinal axis;

a pair of arcuate side spring sections longitudinally between the end parts, symmetrical to the longitudinal axis, point symmetrical to the midpoint, and each having an outer end connected to a respective one of the end parts and an opposite inner end; and

respective loops between and connecting the inner ends of the side spring sections to outer ends of the central spring section, the central and side spring sections forming together with the loops a meander spring substantially point symmetrical to the midpoint, whereby displacement of one of the end parts longitudinally toward the other end part tensions the meander spring, shifts the outer ends of the side spring sections toward each other, shifts the side spring sections away from each other, and pivots the spring sections and loops about the midpoint; and

a fixed support at the midpoint supporting the central section for pivotal movement only relative to the midpoint, whereby both of the end parts can be shifted with elastic deformation of the meander spring longitudinally toward the midpoint.