Clamping spring and conductor connection terminal

Patent metadata

Field	Value
Publication number	US-11024987-B2
Application number	US-202016752098-A
Country	US
Kind code	B2
Filing date	Jan 24, 2020
Priority date	Jan 25, 2019
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A clamping spring of a conductor connection terminal for connecting an electrical conductor by means of spring-loaded clamping, wherein the clamping spring has a support leg to fix the clamping spring in the conductor connection terminal, a spring bend adjoining the support leg, and a clamping leg adjoining the spring bend, wherein the clamping leg is arranged to clamp the electrical conductor by means of its free end, wherein the clamping leg has at least one corrugation stamped into the material of the clamping leg. A conductor connection terminal with such a clamping spring is also provided.

First claim

What is claimed is:

1. A clamping spring of a conductor connection terminal for connecting an electrical conductor via a spring-loaded clamping, the clamping spring comprising:
a support leg to fix the clamping spring in the conductor connection terminal;
a spring bend adjoining the support leg; and
a clamping leg adjoining the spring bend,
wherein the clamping leg is arranged to clamp the electrical conductor via its free end,
wherein the clamping leg has at least one corrugation stamped into a material of the clamping leg,
wherein the clamping leg has a first region adjoining the spring bend and a second region ending at a free end of the clamping leg, and
wherein the at least one corrugation ends before the free end.

2. The clamping spring according to claim 1 , wherein the first region is connected to the second region through a bend region of the clamping leg where the clamping leg has a bent shape.

3. The clamping spring according to claim 2 , wherein the clamping leg, at least in the bend region, has the at least one corrugation stamped into the material of the clamping leg.

4. The clamping spring according to claim 3 , wherein the corrugation extends from the bend region into the first region and/or into the second region of the clamping leg.

5. The clamping spring according to claim 2 , wherein the clamping leg has, between the first and second regions, an additional bend region in which the clamping leg has a bent shape.

6. The clamping spring according to claim 5 , wherein corrugation does not extend into the additional bend region.

7. The clamping spring according to claim 2 , wherein the corrugation has a bent contour that follows the bent course of the clamping leg in the bend region.

8. The clamping spring according to claim 2 , wherein the corrugation spans the bend region in a straight line.

9. The clamping spring according to claim 1 , wherein an angle between the first and the second regions of the clamping leg formed by the bend region is at least 10 degrees or at least 15 degrees.

10. The clamping spring according to claim 1 , wherein, in the region of the corrugation, the material of the clamping leg is deformed into an indentation on a stamped side of the clamping leg and into a projection on the side opposite the stamped side.

11. The clamping spring according to claim 10 , wherein the convex-shaped side of the bend region forms the stamped side.

12. The clamping spring according to claim 10 , wherein the height of the projection is less than the material thickness of the clamping leg in the bend region.

13. The clamping spring according to claim 1 , wherein the corrugation does not extend over the entire width of the clamping leg.

14. The clamping spring according to claim 1 , wherein the clamping leg has at least one narrowing by which the width of the clamping leg is reduced from the spring bend in the direction of the free end of the clamping leg, wherein the corrugation is arranged in the region of the clamping leg that has the narrowing.

15. The clamping spring according to claim 1 , wherein the corrugation has its greatest length dimension in the direction of the longitudinal extent of the clamping leg.

16. A conductor connection terminal for connection of an electrical conductor via a spring-loaded clamping, the conductor connection terminal comprising:
at least one clamping spring according to claim 1 ;
a busbar; and
an insulating housing that at least substantially encloses the clamping spring and the busbar.

17. The conductor connection terminal according to claim 16 , wherein the conductor connection terminal has a pivoting operating lever for manual operation of the clamping leg of the clamping spring to open and/or close a clamping point formed between the clamping leg and the busbar for clamping the electrical conductor.

18. The clamping spring according to claim 1 , further comprising a bent clamping edge disposed at an end of the clamping leg.

19. The clamping spring according to claim 1 , further comprising a bent attachment section disposed at an end of the support leg.

20. A clamping spring of a conductor connection terminal for connecting an electrical conductor via a spring-loaded clamping, the clamping spring comprising:
a support leg configured to fix the clamping spring in the conductor connection terminal;
a spring bend adjoining the support leg;
a clamping leg adjoining the spring bend, the clamping leg having a bent portion; and
a corrugation stamped into a material of the clamping leg in the bent portion, the corrugation having a bent contour corresponding to the bent portion of the clamping leg,
wherein the clamping leg is arranged to clamp the electrical conductor via its free end.

21. A clamping spring of a conductor connection terminal for connecting an electrical conductor via a spring-loaded clamping, the clamping spring comprising:
a support leg to fix the clamping spring in the conductor connection terminal;
a spring bend adjoining the support leg; and
a clamping leg adjoining the spring bend,
wherein the clamping leg is arranged to clamp the electrical conductor via its free end, and
wherein the clamping leg has at least one corrugation stamped into a material of the clamping leg from a side of the clamping leg facing the support leg.

Assignees

• Wago Verwaltungs Gmbh

Inventors

• Koellmann Hans-Josef
• Volkmann Alexander

Classifications

• H01R4/483

  Pivoting arrangements, e.g. lever pushing on the spring · CPC title

• H01R4/4835

  Mechanically bistable arrangements, e.g. locked by the housing when the spring is biased · CPC title

• H01R4/4821 Primary

  Single-blade spring · CPC title

• H01R4/52

  which is spring loaded · CPC title

• H01R4/48 Primary

  utilising a spring, clip, or other resilient member (H01R4/52 takes precedence) · CPC title