EP0072125B1 - Porte-fusible - Google Patents

Porte-fusible Download PDF

Info

Publication number
EP0072125B1
EP0072125B1 EP19820303880 EP82303880A EP0072125B1 EP 0072125 B1 EP0072125 B1 EP 0072125B1 EP 19820303880 EP19820303880 EP 19820303880 EP 82303880 A EP82303880 A EP 82303880A EP 0072125 B1 EP0072125 B1 EP 0072125B1
Authority
EP
European Patent Office
Prior art keywords
fuse
socket
cap
retainer
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19820303880
Other languages
German (de)
English (en)
Other versions
EP0072125A2 (fr
EP0072125A3 (en
Inventor
Tetsuro Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ECHO ELECTRIC Co Ltd
Original Assignee
ECHO ELECTRIC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ECHO ELECTRIC Co Ltd filed Critical ECHO ELECTRIC Co Ltd
Publication of EP0072125A2 publication Critical patent/EP0072125A2/fr
Publication of EP0072125A3 publication Critical patent/EP0072125A3/en
Application granted granted Critical
Publication of EP0072125B1 publication Critical patent/EP0072125B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/542—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers the intermediate or auxiliary part being provided with bayonet-type locking means

Definitions

  • the present invention relates to a fuse holder for a cartridge type fuse.
  • Fuse holders are used in household electric applicances such as TV sets, stereo sets and so forth, as well as in various industrial equipment.
  • household electric applicances such as TV sets, stereo sets and so forth
  • improvements and development in the field of electronic parts such as switches, followed by improvement in the performance of fuses.
  • applications for and use of fuses is spreading year by year. Under these circumstances, there is an increasing demand for a fuse holder having enhanced safety and improved performance.
  • a typical conventional fuse holder has a metallic screw member 4 provided with an external thread 4a.
  • a clamp 3 clamping one end of the fuse 5 is secured to the screw member 4.
  • the screw member 4 in turn is fixed to a cap 1 made of plastics.
  • the fuse holder further has a generally cylindrical socket 2 made of plastics.
  • a terminal 7 fitted in the open end of the internal bore of the socket 2 has an internal thread 7a for engagement with the external thread 4a of the screw member 4.
  • Another terminal 8 is disposed at the closed end of the internal bore of the socket 2.
  • the fuse 5 which is clamped at its one end by the clamp 3, is inserted into the internal bore of the socket 2, and the cap 1 is rotated by fingers to screw the screw member 4 into the terminal 7 so that the external thread 4a of the screw member 4 and the internal thread 7a of the terminal 7 engage with each other to drive the screw member 4 deeper into the bore of the socket 2 until the inner end of the fuse 5 is stopped by the terminal 8.
  • the two terminals 7 and 8 are electrically connected to each other through the fuse 5.
  • the socket 2 is shown attached to a panel 11 by means of a washer 9 and spring ring 10 or the like.
  • This known fuse holder has the following drawback. Namely, in the course of mounting of the fuse, the screw member attached to the cap 1 is brought into contact with the internal thread 7a of the terminal 7, i.e. electrically connected to the terminal 7. In this state, the major part of the screw member 4 is still exposed to the outside of the socket. lf the terminal 7 has an applied voltage therefore the operator may receive an electrical shock when his finger happens to contact with the screw member 4.
  • CH-A-442494, DE-A-1588940 and GB-A-1086629 disclose fuse holders having sockets which are capable of preventing access to conductive parts of the fuse holder from outside and thus deal with the above problem.
  • CH-A-442494 has a fuse holder which comprises an outer sheath of insulating material that surrounds a fuse retainer and is of a length such that when the fuse and sheath are inserted into a socket, when or before a first end of the fuse comes into contact with a slide terminal in the socket, the end of the sheath that is opposite to the first end of the fuse reaches the open end of the socket and prevents access to any conductive parts of the fuse or holder from outside.
  • a fuse holder having a cap with a fuse retainer for retaining one end of a fuse
  • a cap 1 has a groove 1a adapted to receive a screwdriver or the peripheral edge of a coin or the like for inserting the cap 1.
  • the cap 1 also has an internal recess 1 b.
  • An outer sheath 1c made of an electrically insulating material, is formed integrally with the cap 1 or, alternatively, made separately from the cap 1 and then bonded to the latter by means of an adhesive. Since this insulating outer sheath surrounds a fuse retainer 20 as will be discussed later, accidental touching of the fuse retainer 20 by a user's fingers is completely prevented.
  • the socket 2 has a through hole 2a formed in a lateral side portion thereof.
  • a side terminal 7 integral with a cylindrical member 15 (see Figure 3b) is extended to the outside of the socket 2 through the hole 2a.
  • An end hole 2b is formed in the end portion of the socket 2.
  • L-shaped notches 15a are formed in one of the rims of the cylindrical member. These L-shaped notches 15a are adapted to engage with latch tabs 12a,12a provided on the metallic case 12.
  • the end terminal 8 has an end projection 16.
  • the fuse retainer 20 accommodates a coil spring 13 and a retainer lug 14 which is provided with substantially U-shaped legs 14a.
  • the retainer lug 14 is fixed to the bottom wall of a metallic case 12 with one end of the legs 14a secured to the bottom wall of the fuse retainer 20.
  • the coil spring 13 is fixed at one end between the legs 14a and the retainer lug 14, so that it can never come out of the case 12.
  • the case 12 has two latch tabs 12a arranged at 180° apart at the open end 12b thereof, although it can have three latch tabs arranged at 120° or four latch tabs arranged at 90° if desired.
  • the cap 1 has a coiled spring 18 between the metallic case 12 and the other sheath 1c of the cap 1.
  • the fuse holder is used in the following manner:-
  • the fuse 5 is inserted into the socket 2 until the latch tabs 12a of the case 12 are received by the L-shaped notches 15a of the member 15.
  • the cap 1 is pressed in by fingers or, alternatively, by means of a screw driver or a coin received in the groove 1a of the cap 1.
  • the case 12 is moved deeper into the socket 2 while the one end terminal of the fuse 5 is moved deeper into the case 12 compressing the coiled spring 13.
  • the cap 1 retaining the fuse 5 is completely received in the socket 2 and, at the same time, the latch tabs 12a reach the corners of the corresponding L-shaped notches 15a of the member 15.
  • the cap 1 is rotated to slide the latch tabs 12a along the bottom edges of the L-shaped notches 15a to complete the latching.

Landscapes

  • Fuses (AREA)

Claims (1)

1. Porte-fusible ayant un couvercle (1) avec un dispositif de retenue de fusible (20) pour tenir une extrémité d'un fusible (5);
une douille (2) pour le fusible ayant une borne latérale (7) et une borne terminale (8), le couvercle (1) étant conçu pour être connecté à la douille (2) pour fournir une connection électrique entre la borne latérale (7) et la borne terminale (8) par le fusible (5);
un étui externe (1c) en un matériau isolant entourant le dispositif de retenue du fusible (20) d'une longueur telle que, lorsque le fusible (5) et le couvercle (1) sont insérés dans la douille (2) et que l'autre extrémité du fusible (5) entre en contact avec la borne latérale (7) de la douille (2) ou avant cela, l'extrémité de l'étui externe (1c) atteigne l'extrémité ouverte (2c) de la douille pour empêcher d'accéder à une quelconque partie conductrice du fusible ou du porte-fusible depuis l'extérieur:
un boîtier cylindrique métallique (12) inclus dans le dispositif de retenue du fusible (20) pourvu de pattes de verrouillage (12a) formées à son extrémité ouverte (12b);
un élément cylindrique métallique 15) fixé à l'intérieur de la douille (2) et coaxial avec celle-ci, et qui fait partie intégrante de la borne latérale (7), caractérisé en ce que
l'élément cylindrique métallique est formé avec des fentes en forme de L (15a) à une de ses extrémités (15b) pour recevoir les pattes de verrouillage (12a) pour fixer le couvercle (1) dans la douille (2); et en ce que
le dispositif de retenue du fusible (20) comprend en outre:
une gaine de retenue semi-cylindrique (14) formée dans le boîtier métallique (12) pour retenir le fusible (5) à une de ses extrémités, la gaine de retenue (14) ayant des pattes (14a) en forme de U à son autre extrémité,
un ressort à boudin (13) fixé dans la gaine de retenue (14), le ressort à boudin ayant une extrémité supportée par les pattes en forme de U (14a) et le fusible (5) étant tenu lorsqu'il est en service, entre le ressort à boudin (13) et la borne terminale (8); et
un second ressort à boudin (18) disposé entre le dispositif de retenue du fusible (20) et l'étui externe (1c), qui est comprimé par engagement avec l'extrémité (15b) de l'élément cylindrique (15), ce qui pousse le bouchon (1) hors de la douille (2), même lorsqu'il n'y a pas de fusible (5) dans le porte-fusible.
EP19820303880 1981-07-22 1982-07-22 Porte-fusible Expired EP0072125B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10870281U JPS5814656U (ja) 1981-07-22 1981-07-22 ヒユ−ズホルダ−
JP108702/81 1981-07-22

Publications (3)

Publication Number Publication Date
EP0072125A2 EP0072125A2 (fr) 1983-02-16
EP0072125A3 EP0072125A3 (en) 1985-05-22
EP0072125B1 true EP0072125B1 (fr) 1988-10-05

Family

ID=14491449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820303880 Expired EP0072125B1 (fr) 1981-07-22 1982-07-22 Porte-fusible

Country Status (3)

Country Link
EP (1) EP0072125B1 (fr)
JP (1) JPS5814656U (fr)
DE (1) DE3279092D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477139A (en) * 1982-07-12 1984-10-16 Mcgraw-Edison Company Shock proof fuseholder
JPH0327323Y2 (fr) * 1985-03-27 1991-06-13
US4690648A (en) * 1985-04-05 1987-09-01 Cooper Industries, Inc. Cartridge fuse holder
JPH0528887Y2 (fr) * 1987-12-04 1993-07-26
US7124424B2 (en) 2000-11-27 2006-10-17 Sedna Patent Services, Llc Method and apparatus for providing interactive program guide (IPG) and video-on-demand (VOD) user interfaces
US8380726B2 (en) 2006-03-06 2013-02-19 Veveo, Inc. Methods and systems for selecting and presenting content based on a comparison of preference signatures from multiple users
CN108022815B (zh) * 2018-01-24 2024-05-14 安徽锐能科技有限公司 一种具有防水功能的保险丝座

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1400583A (fr) * 1964-04-17 1965-05-28 Coupe-circuit à fusible
CH442494A (de) * 1966-05-04 1967-08-31 Schurter H Berührungssicherer Sicherungshalter
DE1588940C3 (de) * 1967-03-29 1974-06-27 Wickmann-Werke Ag, 5810 Witten Sicherungshalter
CH534433A (de) * 1971-11-26 1973-02-28 Schurter Ag H Kabelanschlussvorrichtung für einen Apparat

Also Published As

Publication number Publication date
JPS616608Y2 (fr) 1986-02-27
JPS5814656U (ja) 1983-01-29
EP0072125A2 (fr) 1983-02-16
DE3279092D1 (en) 1988-11-10
EP0072125A3 (en) 1985-05-22

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