High thermal conductivity fuse holder

Patent metadata

Field	Value
Publication number	US-12176168-B2
Application number	US-202318107849-A
Country	US
Kind code	B2
Filing date	Feb 9, 2023
Priority date	Feb 9, 2023
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A fuse holder includes a housing and a knob. The housing has a telescoping chamber designed to receive a knob terminal, where the knob terminal is adapted to receive a fuse. The knob has a neck which is inserted into the telescoping chamber to enclose the cylindrical fuse. The housing and neck are made of a polymer having a thermal conductivity in a range of 4.0 to 10 W/mK.

First claim

The invention claimed is:

1. A fuse holder comprising:
a housing comprising a telescoping chamber adapted to receive a knob terminal, wherein the knob terminal is adapted to hold a fuse; and
a knob comprising a neck, wherein the neck is inserted into the telescoping cavity and enclosing the cylindrical fuse;
the telescoping chamber further comprising:
a first chamber disposed adjacent a head of the housing, wherein the neck is inserted through the head;
a second chamber disposed adjacent the first chamber;
a third chamber disposed adjacent the second chamber, wherein the second chamber is in between the first chamber and the third chamber; and
a fourth chamber adjacent the third chamber;
a first terminal to connect to a first side of the knob terminal inside the telescoping chamber, the first terminal further comprising:
a slot section adapted to be inserted into a slot of the housing, the slot section to bisect the third chamber and the fourth chamber; and
a protruding section extend laterally outside the housing, wherein the slot section is orthogonal to the protruding section; and

a second terminal to connect to the knob terminal inside the telescoping chamber.

2. The fuse holder of claim 1 , the housing further comprising a plurality of fins axially radiating from an outside surface of the housing.

3. The fuse holder of claim 1 , the knob further comprising a plurality of fin axially radiating from an outside surface of the knob.

4. The fuse holder of claim 1 , wherein the first chamber, the second chamber, and the third chamber are cylindrical.

5. The fuse holder of claim 1 , wherein the first chamber has a first diameter, the second chamber has a second diameter, and the third chamber has a third diameter, wherein the first diameter is larger than the second diameter and the second diameter is larger than the third diameter.

6. The fuse holder of claim 1 , the second terminal further comprising:
a protruding section to extend laterally outside the housing; and
a cylindrical section adapted to be inserted into a cylindrical slot of the housing, wherein the cylindrical slot is an extension of the second chamber and adjacent the third chamber.

7. The fuse holder of claim 6 , the housing further comprising a terminal pathway disposed between the second chamber and an outside of the housing, wherein the protruding section is fed through the terminal pathway.

8. A fuse holder comprising:
a knob; and
a housing comprising:
a telescoping chamber to hold a knob terminal, the telescoping chamber further comprising:
a first chamber for holding a neck of the knob;
a second chamber adjacent the first chamber, the second chamber comprising the second slot;
a third chamber adjacent the second chamber, the second chamber for holding the cylindrical fuse; and
a fourth chamber adjacent the third chamber, wherein the third chamber is between the second chamber and the fourth chamber;

wherein the knob terminal is adapted to hold a fuse;
a cylindrical head disposed adjacent the telescoping chamber, the cylindrical head to receive the knob, the knob to enclose the telescoping chamber;
a first slot for receiving a first terminal, wherein the first slot is orthogonal to the telescoping chamber; and
a second slot for receiving a second terminal, wherein the second slot holds a cylindrical section of the second terminal.

9. The fuse holder of claim 8 , wherein the first slot bisects the telescoping chamber between the third chamber and the fourth chamber.

10. The fuse holder of claim 8 , wherein the second slot is an extension of the second chamber that surrounds the third chamber.

11. The fuse holder of claim 8 , wherein:
the first chamber has a first diameter;
the second chamber has a second diameter, smaller than the first diameter;
the third chamber has a third diameter smaller than the second diameter; and
the fourth chamber has a fourth diameter smaller than the third diameter.

12. The fuse holder of claim 8 , the second terminal further comprising a neck section adjacent the cylindrical section, an angled section adjacent the neck section, and a protruding section, wherein the protruding section extends radially outward from the housing.

13. The fuse holder of claim 12 , the housing further comprising a terminal pathway, wherein the terminal pathway is a cavity extending from the second chamber to outside the housing.

14. The fuse holder of claim 13 , wherein the protruding section and angled section of the second terminal are inserted into the terminal pathway until the protruding section extends radially outward from the housing.

15. The fuse holder of claim 8 , wherein the housing further comprises a plurality of fins radiating axially outward from a surface of the housing.

16. The fuse holder of claim 8 , wherein the knob further comprises a plurality of fins radiating axially outward from a surface of the knob.

Assignees

• Littelfuse Inc

Inventors

• Guerrero Juan Antonio

Classifications

• H01H85/143 Primary

  Electrical contacts; Fastening fusible members to such contacts · CPC title

• H01H85/542

  the intermediate or auxiliary part being provided with bayonet-type locking means · CPC title

• H01H85/2005

  for use with screw-in type fuse · CPC title

• H01H85/17

  characterised by the casing material · CPC title

• H01H85/47

  Means for cooling · CPC title