Push-in fuse holder

Patent metadata

Field	Value
Publication number	US-12100569-B2
Application number	US-202217878502-A
Country	US
Kind code	B2
Filing date	Aug 1, 2022
Priority date	Aug 1, 2022
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A fuse holder is disclosed. The fuse holder includes a housing having a fuse compartment and termination compartments, each termination compartment having a cable termination aperture for receiving a cable and a lock pin slot; a bus assembly disposed including current bars having a first end and a second end extending from the termination compartment to the termination compartment, the first end having fuse contacts extending from the first end, the second end including a barb extending from the second end; and, push-in clamps disposed within the termination compartment, the push-in clamps normally biased against the barbs; wherein insertion of an electrical cable into the cable termination aperture depresses and elastically deforms the push-in clamp such that a gap is formed between the barb and the push-in clamp, wherein the push-in clamp continuously applies a biasing force against the electrical cable non-removably clamping the cable into the termination aperture.

First claim

What is claimed is:

1. A fuse holder comprising:
a housing including sidewalls and compartment walls defining a fuse compartment and termination compartments, each termination compartment having a cable termination aperture for receiving an electrical cable and a lock pin slot, the fuse compartment configured to receive a fuse;
a bus assembly disposed in the housing, the bus assembly including current bars having a first end and a second end extending from the fuse compartment to the termination compartment, the first end having fuse contacts extending from the first end, the second end including a barb extending from the second end;
push-in clamps disposed within the termination compartment, the push-in clamps normally biased against the barbs, each of the push-in clamps configured to elastically deform, upon insertion of the electrical cable into the cable termination aperture, to form a gap between the barb and the push-in clamp, each of the push-in clamps being further configured to continuously apply a biasing force, during and after insertion of the electrical cable, against the electrical cable clamping the electrical cable into the termination aperture; and
a fuse lever for holding the fuse, wherein the fuse lever includes a slot for receiving the fuse and the fuse lever includes a snap-fit cap for securing the fuse within the slot, wherein the snap-fit cap removably secures to the fuse lever, the fuse lever is pivotable about a pin disposed within the fuse compartment of the housing and is pivotable between an open position and closed position, wherein the fuse contacts of the bus assembly contact the fuse.

2. The fuse holder of claim 1 , wherein withdrawing of the electrical cable from the cable termination apertures causes the barbs to catch the electrical cable due to the biasing force applied by the push-in clamps against the electrical cable.

3. The fuse holder of claim 2 , wherein a tool is inserted into the cable termination apertures to release the cable, the tool depressing the push-in clamps such that the push-in clamps no longer bias the electrical cable.

4. The fuse holder of claim 2 further comprising lock pins positioned within each lock pin slot, the lock pins normally abutting the push-in clamps, wherein the lock pin slots are positioned adjacent to the cable termination apertures.

5. The fuse holder of claim 4 , wherein depression of the lock pins depresses the push-in clamps such that the push-in clamps no longer biases the electrical cable.

6. The fuse holder of claim 4 , wherein the lock pins are flush with a sidewall of the housing in which each lock pin slot is defined, and wherein the lock pins are configured to be depressed by a tool.

7. The fuse holder of claim 4 , wherein the lock pins protrude from a sidewall in which each lock pin slot is defined, such that the lock pin is configured to be depressed by a user.

8. The fuse holder of claim 1 , wherein the termination compartments are configured to enable insertion of the electrical cable to abut the current bar.

9. The fuse holder of claim 1 , wherein the fuse lever can pivot 70 degrees about the pin between the open position and the closed position.

10. The fuse holder of claim 1 , wherein the fuse lever further includes an end-stop opposite the snap-fit cap which limits an insertion distance the fuse can be inserted into the slot.

11. The fuse holder of claim 1 , wherein the end-stop further includes a ledge extending a distance from the end-stop, the distance sized and configured to fit with UL Class CC fuses.

12. The fuse holder of claim 1 , wherein the fuse compartment is defined by compartment walls, and the termination compartment is defined by the compartment walls and the sidewalls of the housing.

13. The fuse holder of claim 12 , wherein the termination compartments include a channel defined by an opening in the compartment walls, the current bars positioned within the channel.

14. The fuse holder of claim 1 , wherein each termination compartment includes a clamp support protrusion configured to secure the push-in clamp of each termination compartment.

15. The fuse holder of claim 1 , wherein the fuse contacts are U-shaped cantilevered prongs extending from the current bars, the cantilevered prongs configured to elastically deform to create an interference fit with end contacts of the fuse creating an electrical connection.

16. The fuse holder of claim 15 further comprising a reinforcing member that applies a biasing force against the cantilevered prongs of the fuse contacts.

17. A fuse holder comprising:
a housing including sidewalls and compartment walls defining a fuse compartment and termination compartments, each termination compartment having a cable termination aperture for receiving an electrical cable and a lock pin slot, the fuse compartment configured to receive a fuse;
a bus assembly disposed including current bars having a first end and a second end extending from the fuse compartment to the termination compartment, the first end having fuse contacts extending from the first end, the second end including a barb extending from the second end;
push-in clamps disposed within the termination compartment, the push-in clamps normally biased against the barbs, each of the push-in clamps configured to elastically deform, upon insertion of the electrical cable into the cable termination aperture, to form a gap between the barb and the push-in clamp, each of the push-in clamps being further configured to continuously apply a biasing force, during and after insertion of the electrical cable, against the electrical cable clamping the cable into the termination aperture, wherein withdrawing of the electrical cable from the cable termination apertures causes the barbs to catch the electrical cable due to the biasing force applied by the push-in clamps against the electrical cable;
lock pins positioned within the lock pin slots, the lock pins normally abutting the push-in clamps, wherein the lock pin slots are positioned adjacent to the cable termination apertures, wherein depression of the lock pins depresses the push-in clamps such that the push-in clamps no longer biases the electrical cable; and
a fuse lever for holding the fuse, wherein the fuse lever includes a slot for receiving the fuse and the fuse lever includes a snap-fit cap for securing the fuse within the slot, wherein the snap-fit cap removably secures to the fuse lever, the fuse lever is pivotable about a pin disposed within the fuse compartment of the housing and is pivotable between an open position and closed position, wherein the fuse contacts the fuse contacts of the bus assembly.

Assignees

• Regal Beloit America Inc

Inventors

• Schaffner Luke D
• Brown Joseph A
• Buskey Paul S
• Scheckelhoff Robert

Classifications

• H01H85/22

  Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse · CPC title

• H01H85/205

  Electric connections to contacts on the base · CPC title

• H01H1/5844

  making use of wire-gripping clips or springs · CPC title

• H01H85/2045 Primary

  Mounting means or insulating parts of the base, e.g. covers, casings · CPC title

• H01H85/545 Primary

  with pivoting fuse carrier (tumbler switch with built-in fuse H01H23/10) · CPC title