Mechanical disconnect switch with integrated fuse protection

Patent metadata

Field	Value
Publication number	US-10079131-B2
Application number	US-201715687706-A
Country	US
Kind code	B2
Filing date	Aug 28, 2017
Priority date	Sep 5, 2014
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

A circuit protection assembly (CPA) is disposed between a source of power and a circuit to be protected. The CPA comprises a mounting block having a bore extending therethrough and a recess cavity on a first surface of the mounting block. A post having a first end is disposed within the recess cavity and a body portion extends through the bore. The body portion configured to receive a terminal and the second end configured to receive a securing mechanism. A fuse having a centrally disposed aperture is configured to receive the body portion of the post and to receive the terminal for connection to a circuit to be protected. An insulator disposed on the terminal and disposed beneath the securing mechanism. The insulator configured to isolate the post from the terminal and the fuse while allowing the securing mechanism to apply an amount of torque.

First claim

What is claimed is:

1. A method of forming a mechanical disconnect switch having integrated fuse protection comprising:
forming a mounting block having a bore extending therethrough and a recess cavity on a first surface of the mounting block;
forming a post having a first end disposed within the recess cavity, a second end, and a body portion extending through the bore, the body portion configured to receive a terminal and the second end configured to receive a securing mechanism;
forming a fuse having a centrally disposed aperture, the fuse configured to receive the body portion of the post and to receive the terminal for connection to a circuit to be protected; and
forming an insulator proximately superposed on the terminal and proximately disposed beneath the securing mechanism, the insulator configured to isolate the second end of the post from the terminal and the fuse while allowing the securing mechanism to apply an amount of torque, the insulator including a tether coupled thereto.

2. The method of claim 1 , wherein the insulator is a washer and the mounting block is a mechanical disconnect switch.

3. The method of claim 1 , wherein the insulator is configured to include a glass mat washer.

4. The method of claim 1 , wherein the insulator includes an extrusion portion extending along the body portion of the post and extending through the bore to isolate the second end of the post from the terminal and the fuse.

5. The method of claim 1 , wherein the fuse comprises a second terminal in contact with the terminal and a fuse element electrically connecting the terminal and the second terminal of the fuse.

6. A method of forming a mechanical disconnect switch having integrated fuse protection comprising:
forming a mounting block having a bore extending therethrough and a recess cavity on a first surface of the mounting block;
forming a post having a first end disposed within the recess cavity, a second end, and a body portion extending through the bore, the body portion configured to receive a terminal and the second end configured to receive a securing mechanism;
forming a fuse having a centrally disposed aperture, the fuse configured to receive the body portion of the post and to receive the terminal for connection to a circuit to be protected; and
forming an insulator proximately superposed on the terminal and proximately disposed beneath the securing mechanism, the insulator configured to isolate the second end of the post from the terminal and the fuse while allowing the securing mechanism to apply an amount of torque, wherein the insulator is a washer and the mounting block is a mechanical disconnect switch.

7. The method of claim 6 , wherein the insulator is configured to include a glass mat washer.

8. The method of claim 6 , wherein the insulator includes an extrusion portion extending along the body portion of the post and extending through the bore to isolate the second end of the post from the terminal and the fuse.

9. The method of claim 6 , further including a tether coupled to the insulator.

10. The method of claim 6 , wherein the fuse comprises a second terminal in contact with the terminal and a fuse element electrically connecting the terminal and the second terminal of the fuse.

Assignees

• Littelfuse Inc

Inventors

• Schwartz Geoffrey
• Scribner Dana
• Thomas Joe

Classifications

• H01H85/2045

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

• H01H85/143

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

• H01R11/12

  End pieces terminating in an eye, hook, or fork · CPC title

• H01H2085/025

  Structural association with a binding post of a storage battery · CPC title

• H01H2085/208

  specially adapted for vehicles · CPC title