Method for sealed fuse holder with ISO micro relay

Patent metadata

Field	Value
Publication number	US-11728603-B2
Application number	US-202117332244-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	May 27, 2021
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A novel electrical box to house one or more ISO micro relays, is adapted to support IP67 and IP69K Ingress Protection ratings. The housing of the electrical box is molded with blade sockets that correspond to blade positions of the ISO micro relay. The housing is also molded with terminal seats and cylindrical openings which vary, depending on the blade socket, enabling terminals of different sizes, orientations, and positions relative to the respective blades, to be easily inserted into the back of the housing. The resulting position of the terminals ensures that electrical connections to the ISO micro relay are made and ingress protection of components inside the electrical box is ensured.

First claim

The invention claimed is:

1. An electrical box comprising:
a housing comprising a relay socket, the relay socket comprising:
a first blade socket;
a second blade socket adjacent and parallel to the first blade socket;
a third blade socket orthogonal to the first blade socket, wherein the third blade socket is adjacent to the second blade socket, wherein the relay socket is adapted to accept an International Standards Organization (ISO) micro relay;
a first terminal seat disposed in a center position of the first blade socket, wherein the first terminal seat is adapted to receive a first terminal;
a second terminal seat disposed in a center position of the second blade socket, wherein the second terminal seat is adapted to receive a second terminal;
a third terminal seat disposed in a first end of the third blade socket, wherein the third terminal seat is adapted to receive the third terminal;
a fourth blade socket orthogonal to the first blade socket; and
a fifth blade socket orthogonal to the first blade socket, wherein the fourth blade socket and the fifth blade socket are adjacent to the second blade socket, with the fourth blade socket being between the third blade socket and the fifth blade socket;
wherein:
the first blade socket is adapted to receive a first blade of the ISO micro relay;
the second blade socket is adapted to receive a second blade of the ISO micro relay;
the third blade socket is adapted to receive a third blade of the ISO micro relay;
the fourth blade socket is adapted to receive a fourth blade of the ISO micro relay; and
the fifth blade socket is adapted to receive a fifth blade of the ISO micro relay.

2. The electrical box of claim 1 , further comprising a fourth terminal seat disposed at a second end of the fourth blade socket.

3. The electrical box of claim 2 , further comprising a fifth terminal seat disposed at a third end of the fifth blade socket, wherein the first end and the third end are in a first plane and the second end is in a second plane.

4. The electrical box of claim 1 , further comprising:
a cover to be fit over the housing; and
a seal disposed between the cover and the housing;
wherein the electrical box, when sealed with the cover, satisfies IP67 and IP69K ingress protection ratings.

5. The electrical box of claim 3 , the housing further comprising:
a first cylindrical opening of a first size adapted to receive the first terminal;
a second cylindrical opening of the first size adapted to receive the second terminal; and
a third cylindrical opening of a second size adapted to receive the third terminal, wherein the second size is smaller than the first size.

6. The electrical box of claim 5 , wherein:
the third terminal seat is adapted to receive the third terminal of the second size; and
the fifth terminal seat is adapted to receive a fifth terminal of the second size.

7. The electrical box of claim 6 , wherein:
the first terminal seat is adapted to receive the first terminal in a first direction; and
the second terminal seat is adapted to receive the second terminal in the first direction.

8. The electrical box of claim 7 , wherein the fourth terminal seat is adapted to receive a fourth terminal in a second direction, the second direction being orthogonal to the first direction.

9. The electrical box of claim 8 , wherein:
the third terminal seat is adapted to receive the third terminal in the second direction; and
the fifth terminal seat is adapted to receive the fifth terminal in the second direction.

10. A relay socket comprising:
a first blade socket adapted to receive a first blade of an International Standards Organization (ISO) micro relay, the first blade socket having a first edge and a second edge;
a first terminal seat disposed at the first edge of the first blade socket, wherein the first terminal seat is adapted to receive a first terminal;
a second blade socket adjacent and parallel to the first blade socket, the second blade socket being adapted to receive a second blade of the ISO micro relay, the second blade socket having a third edge and a fourth edge, wherein the third edge is proximate the first edge and the fourth edge is proximate the second edge;
a second terminal seat disposed at the fourth edge of the second blade socket, wherein the second terminal seat is adapted to receive a second terminal;
a third blade socket adjacent and parallel to the second blade socket, the third blade socket being adapted to receive a third blade of the ISO micro relay, the third blade socket having a fifth edge and a sixth edge, wherein the fifth edge is proximate the third edge and the sixth edge is proximate the fourth edge;
a third terminal seat disposed at the fifth edge of the third blade socket, wherein the third terminal seat is adapted to receive a third terminal;
a fourth blade socket orthogonal to the first blade socket, the fourth blade socket being adapted to receive a fourth blade of the ISO micro relay;
a fourth terminal seat disposed at a first center position of the fourth blade socket, wherein the fourth terminal seat is adapted to receive a fourth terminal;
a fifth blade socket orthogonal to the first, second, and third blade sockets, the fifth blade socket being parallel to the fourth blade socket, the fifth blade socket being adapted to receive a fifth blade of the ISO micro relay; and
a fifth terminal seat disposed at a second center position of the fifth blade socket, wherein the fifth terminal seat is adapted to receive a fifth terminal;

wherein:
the fourth blade socket is a first size and the fifth blade socket is the first size; and
the first blade socket is a second size, the second blade socket is the second size, and the third blade socket is the second size, wherein the second size is smaller than the first size.

11. A housing for use in an electrical box, the housing comprising:
a component side and a terminal side; and
a relay socket adapted to receive an International Standards Organization (ISO) micro relay, the relay socket comprising:
a first cross-shaped opening adapted to receive:
a first blade of the ISO micro relay on the component side; and
a first terminal on the terminal side;
a second cross-shaped opening adapted to receive:
a second blade of the ISO micro relay on the component side; and a second terminal on the terminal side;
a third cross-shaped opening adapted to receive:
a third blade of the ISO micro relay on the component side;

a third terminal on the terminal side, wherein the second cross-shaped opening is identical to the third cross-shaped opening;
a fourth cross-shaped opening adapted to receive:
a fourth blade of the ISO micro relay on the component side;
a fourth terminal on the terminal side, wherein the first cross-shaped opening is identical to the fourth cross-shaped opening;
a fifth cross-shaped opening adapted to receive:
a fifth blade of the ISO micro relay on the component side; and
a fifth terminal on the terminal side, wherein the fifth cross-shaped opening is different from the first cross-shaped opening and the second cross-shaped opening.

12. The housing of claim 11 , wherein:
the first cross-shaped opening is a first size and is adapted to receive the first terminal;
the second cross-shaped opening is a second size and is adapted to receive the second terminal; and
the third cross-shaped opening is the second size and is adapted to receive the third terminal.

13. The housing of claim 11 , wherein:
the first cross-shaped opening is adapted to receive the first terminal in a first orientation;
the second cross-shaped opening is adapted

Assignees

• Littelfuse Inc

Inventors

• Skrzypczak Michael J
• Kotowski Dave G

Classifications

• H01R33/765 Primary

  the terminal pins having a non-circular disposition · CPC title

• H02B1/28

  dustproof, splashproof, drip-proof, waterproof or flameproof · CPC title

• H02B1/48

  Mounting of devices therein · CPC title

• H01H45/14

  Terminal arrangements · CPC title

• H01R33/88

  adapted for simultaneous co-operation with two or more identical counterparts · CPC title