Creepage design terminal strip

Patent metadata

Field	Value
Publication number	US-9509068-B2
Application number	US-201514614751-A
Country	US
Kind code	B2
Filing date	Feb 5, 2015
Priority date	Feb 5, 2015
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A terminal strip and a method of improving a creepage dielectric strength of the same includes a base plate, a barrier, each constructed from an insulating material, and a plurality of terminals constructed from a conducting material. The terminals are connected to the base plate and spaced along a surface thereof. The barrier is disposed between adjacent terminals and configured such that the creepage dielectric strength of the insulating material between adjacent terminals is equal to or greater than a bulk dielectric strength of the insulating material between adjacent terminals.

First claim

The invention claimed is:

1. A terminal strip comprising:
a base plate constructed from an insulating material;
a plurality of terminals constructed from a conducting material and attached to the base plate, wherein the terminals are spaced along the base plate;
a barrier constructed from the insulating material and extending from the base plate, wherein the barrier is disposed between adjacent terminals and configured such that a creepage dielectric strength of the insulating material between adjacent terminals is equal to or greater than a bulk dielectric strength of the insulating material between adjacent terminals; and
a cover constructed from the insulating material, wherein the cover comprises:
a top wall spaced from and disposed opposite the base plate;
a plurality of side walls, each side wall extending from the top wall towards the base plate, wherein at least one of the side walls is mechanically attached to the base plate, and wherein the base plate, the top wall, and the plurality of side walls define a cavity containing the plurality of terminals; and
a first aperture extending through and defined by the top wall, wherein the first aperture is adapted to receive the barrier, and wherein the barrier extends through the top wall at the first aperture.

2. The terminal strip of claim 1 , wherein the cover further comprises:
a cover structure constructed from the insulating material and extending from the top plate towards the base plate, wherein the cover structure is disposed between adjacent terminals.

3. The terminal strip of claim 1 and further comprising:
a plurality of conductor apertures, wherein each conductor aperture is defined by one of the side walls of the cover and the base plate, and wherein each conductor aperture is aligned with one of the terminals;
a plurality of electrical conductors; and
a plurality of seals, each seal surrounding a portion of one of the electrical conductors, wherein each electrical conductor extends through one of the conductor apertures and attaches to one of the terminals, and wherein each seal is configured to be received within one of the conductor apertures.

4. The terminal strip of claim 1 , wherein the barrier comprises:
a first structure; and
a second structure spaced from the first structure along the base plate.

5. The terminal strip of claim 4 , wherein the cover further comprises:
a third structure extending into the cavity from the top wall towards the base plate and disposed between the first and second structures.

6. The terminal strip of claim 5 , wherein the cover further comprises:
a second aperture extending through and defined by the top wall, wherein each of the first and second apertures is adapted to receive one of the first and second structures, and wherein the first and second structures extend through the top wall at one of the first and second apertures.

7. The terminal strip of claim 4 , wherein the base plate defines a passage extending therethrough, and wherein the passage is disposed between the first and second structures.

8. The terminal strip of claim 5 , wherein the first and second structures are integral with the base plate, and wherein the third structure is integral with the cover.

9. The terminal strip of claim 1 and further comprising:
a plurality of barriers constructed from the insulating material and extending from the base plate, wherein each barrier is disposed between adjacent terminals and configured such that the creepage dielectric strength of the insulating material between adjacent terminals is equal to or greater than the bulk dielectric strength of the insulating material between adjacent terminals, and where each barrier comprises:
a first structure; and
a second structure spaced from the first structure along the base plate.

10. The terminal strip of claim 9 , wherein the cover further comprises:
a plurality of third structures extending into the cavity from the top wall towards the base plate, wherein each third structure is disposed between the first and second structures of each barrier.

11. A method of improving the dielectric strength of a terminal strip between adjacent terminals, the method comprising:
providing a terminal strip comprising:
a base plate constructed from an insulating material;
a plurality of terminals constructed from a conducting material and attached to the base plate, wherein the terminals are spaced along the base plate; and
a barrier extending from the base plate, the barrier comprising:
a first structure extending from the base plate; and
a second structure extending from the base plate and spaced from the first structure along the base plate, wherein the barrier is constructed from the insulating material, and wherein the first and second structures are disposed between adjacent terminals; and

configuring the barrier such that a creepage dielectric strength of the terminal strip between adjacent terminals is equal to or greater than a bulk dielectric strength of the terminal strip between adjacent terminals.

12. The method of claim 11 and further comprising:
providing a cover constructed from insulating material, wherein the cover comprises:
a top wall spaced from and disposed opposite the base plate;
a plurality of side walls, each side wall extending from the top wall towards the base plate, wherein at least one of the side walls is mechanically attached to the base plate, and wherein the base plate, the top wall, and the plurality of side walls define a cavity containing the plurality of terminals; and
a plurality of third structures extending into the cavity from the top wall towards the base plate, wherein each third structure is disposed between the first and second structures of each barrier.

13. The method of claim 12 and further comprising:
configuring the first, second, and third structures such that the creepage dielectric strength between adjacent terminals is equal to or greater than the bulk dielectric strength of each structure.

14. The method of claim 12 and further comprising:
providing a first aperture in the cover through which the first structure extends; and
providing a second aperture in the cover through which the second structure extends.

15. A terminal strip comprising:
a base plate constructed from an insulating material;
a plurality of terminals constructed from a conducting material and attached to the base plate, wherein the terminals are spaced along the base plate; and
a barrier constructed from the insulating material and extending from the base plate, the barrier comprising:
a first structure extending from the base plate; and
a second structure extending from the base plate and spaced from the first structure along the base plate, wherein the first and second structures are disposed between adjacent terminals and configured such that a creepage dielectric strength of the insulating material between adjacent terminals is equal to or greater than a bulk dielectric strength of the insulating material between adjacent terminals.

16. The terminal strip of claim 15 and further comprising:
a cover constructed from the insulating material, wherein the cover comprises:
a top wall spaced from and disposed opposite the base plate;
a plurality of side walls, each side wall extending from the top wall towards the base plate, wherein at least one of the side walls is mechanically attached to the base plate, and wherein the base plate, the top wall, and the plurality of side walls define a cavity containing the plurality of terminals; and
a third structure extending in

Assignees

• Hamilton Sundstrand Corp

Inventors

• Hansen Harold J

Classifications

• H01R13/52

  Dustproof, splashproof, drip-proof, waterproof, or flameproof cases · CPC title

• H01R9/226 Primary

  comprising a plurality of conductive flat strips providing connection between wires or components (H01R9/2425 takes precedence) · CPC title

• H01R4/70 Primary

  Insulation of connections (end caps H01R4/22) · CPC title

• H01R9/223

  Insulating enclosures for terminals (for switches H01H9/0264) · CPC title

• H01R13/5227

  with evacuation of penetrating liquids · CPC title