Fuse holder

• US 5,118,314 A
• Filed: 05/07/1991
• Issued: 06/02/1992
• Est. Priority Date: 05/07/1991
• Status: Expired due to Fees

• Current Assignee: Ferraz Shawmut Incorporated (Mersen SA)
• Original Assignee: Gould, Inc. (Transdigm Group Incorporated)
• Inventors: Mangone, Barry L., Oakley, George H.
• Primary Examiner(s): MCGLYNN, JOSEPH
• Application Number:
  US07/696,832
• Time in Patent Office: 392 Days
• Field of Search: 439/830-833
• US Class Current: 439/830
• CPC Class Codes: H01H 2085/209 Modular assembly of fuses or holders, e.g. side by side; combination of a plurality of identical fuse units
• CPC Class Codes: H01H 85/204 for low voltage fuses with knife-blade end contacts
• CPC Class Codes: H01H 85/2045 Mounting means or insulating parts of the base, e.g. covers, casings
• CPC Class Codes: H01H 85/205 Electric connections to contacts on the base

Abstract

A fuse holder having a base made of insulating material, a block having a planar contact surface for contacting a blade terminal of a fuse and two holes that are located on opposite sides of the surface and extend along axes parallel to the surface, one hole being a mounting hole extending through the block, the other the hole being a retainer hole ending at a transverse wire receiving hole, a resilient member that is retained on the block and has an arm that is biased toward the planar contact surface, a connector located in the mounting hole and securing the block to the base, and a wire retainer located in the retainer hole.

Claims

1. A fuse holder for holding an elongated fuse having a blade type terminal extending from a central portion of an end thereof, said fuse holder comprising

a base made of insulating material,

a block having a planar contact surface for contacting a fuse blade located in a flat blade region partially bounded by said surface,

said block also having two holes that are located on opposite sides of the plane of said surface and extend along axes parallel to said surface, one said hold being a mounting hole extending through said block, the other said hole being a retainer hole ending at the side of a transverse wire receiving hole,

said block being a unitary member made of a single, integral piece of material,

said block having a top side and a bottom side, said bottom side of said block being mounted on said base,

both said holes being accessible from the top side of said block,

a resilient member that is retained on said block and has an arm that is biased toward said surface,

a connector located in said mounting hole and securing said block to said base, and

a wire retainer located in said retainer hole.

2. The fuse holder of claim 1 wherein said resilient member has an arm and an end of said arm that has an angled guide surface to guide said fuse blade between said arm and said planar contact surface.

3. The fuse holder of claim 1 wherein said fuse holder has two said blocks and two said resilient members, one resilient member having a tab for mating with a notch in a blade of said fuse.

4. The fuse holder of claim 1 wherein said base has a removable side wall.

5. The fuse holder of claim 1 wherein said base has integral connectors permitting connection to an adjacent base of a different fuse holder.

6. The fuse holder of claim 1 wherein said block has a uniform cross section in planes perpendicular to said planar contact surface and perpendicular to an axis of said wire receiving hole, with the exception of said mounting hole and said retainer holes.

7. The fuse holder of claim 6 wherein said block is made from an extrusion that has been cut at planes perpendicular to said planar contact surface and perpendicular to said axis of said wire receiving hole and has been drilled to provide said mounting hole and said retainer hole.

8. The fuse of claim 6 wherein said block has an L-shaped cross-section, said mounting hole being located in a lower area than said retainer hole.

9. The fuse holder of claim 1 wherein said resilient member has a mounting portion, and said block has a recess that receives said mounting portion of said resilient member.

10. The fuse holder of claim 9 wherein said mounting portion has a spring-loaded bent portion, said recess has a front entrance to it, and said block has a stop surface behind said front entrance that engages said spring-loaded bent portion to restrain said mounting portion from moving out through said front entrance.

11. The fuse holder of claim 9 wherein said recess has side openings at two side surfaces of said block, and said mounting portion has two bent tabs that extend out of said side openings and engage said side surfaces to prevent said mounting portion from moving out through said side openings.

12. The fuse of claim 9 wherein said recess has a surface that is coplanar with a surface at which said mounting hole begins.

13. The fuse holder of claim 1 wherein said resilient member has an arm, and said block has a stop member that limits travel of said arm of said resilient member to permit insertion of said blade between it and said planar surface.

14. The fuse holder of claim 13 wherein said arm has a preloaded force when resting against said stop member.

15. The fuse holder of claim 1 wherein said block has side surfaces, and said base has projections that engage said side surfaces of said block and prevent said block from rotating about an axis of said mounting hole.

16. The fuse holder of claim 15 wherein said base has side walls with gaps permitting access said central portion of a fuse held therein.

17. The fuse holder of claim 16 wherein said base also has mounting holes for mounting said fuse holder on a support surface.