Cylindrical fuse holder with a socket movable axially in the holder

• US 5,659,282 A
• Filed: 04/27/1995
• Issued: 08/19/1997
• Est. Priority Date: 08/30/1994
• Status: Expired due to Fees

• Current Assignee: SMK Corporation
• Original Assignee: SMK Corporation
• Inventors: Nemoto, Kazuhiro
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): Gandhi, Jayprakash N.
• Application Number:
  US08/429,796
• Time in Patent Office: 845 Days
• Field of Search: 337/190-194, 337/195, 337/206, 337/208, 337/213, 337/201, 337/227, 337/228, 337/239, 337/244-248
• US Class Current: 337/201
• CPC Class Codes: H01H 85/62 the intermediate or auxiliary part being adapted for screwing into the base

Abstract

A cylindrical fuse holder assembled by uniting a molded holder body and a molded cap between which a fuse tube is steadily held by means of a socket movable axially in the holder, a coil spring for pressing the socket so as to bring the socket in contact with a side contact piece in the holder body, and another coil spring for pressing the fuse tube. The socket pressing spring for urging the socket is integrally connected to the fuse tube pressing spring. Thus, this fuse holder can be composed of a small number of parts, assure high stability of electrical connection, and be used in safety.

Claims

1. A cylindrical fuse holder comprising a holder body formed in a cylinder with a bottom and an opening for accommodating a fuse tube having terminal portions, and a cap formed in a cylinder with a bottom, said cap being fitted on said holder body to close the opening of said holder body while receiving one part of said terminal portions of said fuse tube, said holder body including a bottom contact piece disposed on said bottom in said holder body, with which the other terminal portions of said fuse tube placed in said holder body comes into contact, said cap being provided in its inner top portion with a fuse tube pressing spring for urging said fuse tube and a conductive socket for holding said one terminal portion of said fuse tube, said holder body being provided with a side contact piece in electric contact with one part of said socket within the united cap and holder body, wherein said socket is movable axially in said cap and urged outward by a socket pressing spring, and wherein said socket pressing spring further urges the leading end of said socket so as to be brought into contact with said side contact piece in the holder body.

2. A cylindrical fuse holder according to claim 1, wherein said leading end of said socket is formed in the shape of a circle, and said side contact piece in said holder body is provided with a ring-shaped socket contact piece in contact with the inner surface of said holder body to bring the leading end of said socket into press contact with said socket contact piece.

3. A cylindrical fuse holder according to claim 1, wherein said fuse tube pressing spring and said socket pressing spring is integrally made of one coil wire.