EP0282624B1 - Berührungssicherer elektrischer Sicherungshalter - Google Patents

Berührungssicherer elektrischer Sicherungshalter Download PDF

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Publication number
EP0282624B1
EP0282624B1 EP19870107179 EP87107179A EP0282624B1 EP 0282624 B1 EP0282624 B1 EP 0282624B1 EP 19870107179 EP19870107179 EP 19870107179 EP 87107179 A EP87107179 A EP 87107179A EP 0282624 B1 EP0282624 B1 EP 0282624B1
Authority
EP
European Patent Office
Prior art keywords
carrier
longitudinal axis
fuse
housing tube
fuse holder
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 - Lifetime
Application number
EP19870107179
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0282624A2 (de
EP0282624A3 (en
Inventor
René Kissling
Werner Staubli
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.)
Schurter AG
Original Assignee
Schurter AG
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 Schurter AG filed Critical Schurter AG
Publication of EP0282624A2 publication Critical patent/EP0282624A2/de
Publication of EP0282624A3 publication Critical patent/EP0282624A3/de
Application granted granted Critical
Publication of EP0282624B1 publication Critical patent/EP0282624B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H85/62—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 adapted for screwing into the base

Definitions

  • the invention relates to a touch-proof electrical fuse holder according to the preamble of claim 1.
  • the receiving tube can be open or closed at the rear.
  • Such a fuse holder is known, for example, from US-A-4,329,006 and from the parallel parallel application EP-A-0 015 094.
  • the fuse holder has according to the US-A -4,329,006 the advantage of short overall length and small number of parts, from which it can be assembled by simply assembling it.
  • the invention has for its object to provide an economically advantageous safety fuse holder with good relaxation and good contact properties of its contact parts, which fuse holder is still space-saving, especially short and yet allows sufficient mutual insulation of its contact parts, without giving up the safety of contact.
  • this fuse holder could at best have a slightly larger diameter of its shaft than that in the above-mentioned US-A-4,329,006, this does not matter, because other conductive parts without an external risk of contact should be close, while this would be the case with the exposed contact clamps US PS would not be allowed.
  • the spring travel is lengthened in a space-saving manner in a space area that would otherwise have remained unused, with a variety of possible variations due to the design of the frame.
  • the connecting parts can be led out laterally through a slot that crosses the outer wall and is open at the rear end.
  • detent springs each, which are allowed to protrude radially outwards and inwards, the inserted parts can be locked in corresponding openings in the outer wall, so that they can no longer fall out.
  • the slots and a front boundary of the gap can prevent the gap from penetrating too deep.
  • Support springs acting radially outwards can have the spring pressure designed as required.
  • Touch security can not only be maintained, it can even be increased.
  • the two end caps of the fuse link can be removed from the Contact pieces of the housing are removed, and because the carrier can be rotated just as little during pulling out as during pushing in, the carrier trough shields the end caps from the contact pieces.
  • An end part of the carrier remains in the receiving tube, because the carrier can preferably only be pulled out as far as a stop, and with a suitable shape, this end of the carrier, or a component thereof located directly outside the receiving tube, can keep the receiving tube closed so that one does not poke into it can.
  • the carrier can only be brought into a removable position with a tool, in order to avoid improper and / or unwanted movement of the carrier, which is why it is preferably completely sunk and can only be rotated with a tool. While it is then easily possible with the tool intended for this, e.g. with a screwdriver and the like to obtain the unlocking rotary movement, one would then (as already said) have to laboriously poke the carrier of US-A-4,329,006 out of the receiving tube.
  • this is avoided in that the carrier and the housing are in thread-like engagement with one another during locking or unlocking. You can then sink the front end of the locked carrier into a suitable recess in the housing and only when it is unlocked, so to speak unscrew.
  • the receiving tube on the side on which the opening for the contact pieces is located has a nose which engages in a groove provided on the carrier and which has three sections.
  • a threaded section of the groove is provided near the front end of the carrier, and when the nose engages and the carrier rotates, the unlocking or locking takes place by unscrewing the carrier from the receiving tube or screwing the carrier into the receiving tube.
  • the carrier in the locked state, can be sunk completely in the housing, so that it can only be unlocked with a tool, without a longer length or other components being necessary. But you can also provide a protruding, manually rotatable head on the carrier.
  • An annular section of the groove is provided near the rear end of the carrier, the nose engaging there when the carrier is pulled out and the carrier can be rotated to tip the fuse link out of the trough.
  • the trough can be opened upwards arrange that inserting the fuse link is also easy. It is therefore not necessary to fix the fuse link in the carrier, which is advantageous from a manufacturing point of view and saves the tedious poking out of the carrier when changing the fuse link.
  • some radially resilient barbs are attached to the rear end of the carrier, while a stop in the form of an undercut ring-like shoulder is provided near the front end of the receiving tube.
  • the mounting of the carrier in the receiving tube can now be carried out simply by pushing the carrier into the front of the receiving tube, the barbs engaging behind the stop and then preventing the carrier from being pulled out completely. At the same time, the nose can be inserted into the groove.
  • the fuse link eccentrically in a manner known per se parallel to the longitudinal axis, it can be brought closer to the contact pieces when the carrier is locked and removed therefrom when unlocking, which in itself is favorable for making contact or isolating.
  • the trough can advantageously be designed without openings, so that the carrier reliably prevents access to the contact pieces in any position other than its locked position.
  • the fuse holder 1 shown (not counting the nut 114) consists of only four parts, namely the housing 100 made of insulating plastic, the two metal contact units 121-128 and 131-138 contained therein, and the carrier made of insulating plastic. Because it does not need any spring parts acting in the longitudinal direction, it can be made very short.
  • This fuse holder 1 can be manufactured as follows: The housing 100 and the carrier 200 can each be molded from plastic in one operation. The two contact units 121-128 and 131-138 can be punched and bent from a suitable contact spring material. These contact units 121-128 and 131-138 are successively (first 121-128) inserted from the rear into the gap 109 of the housing 100 parallel to the longitudinal axis A, where they snap into the correct position. One is then ready as shown in FIG. 4. Now the carrier 200 is pushed with the barbs 204 ahead into the receiving tube 103 of the housing 100, the barbs 204 being initially bent radially inwards and then engaging behind the stop 112 in the receiving tube 103, so that the carrier 200 is captive. You can now slide the carrier 200 (possibly with a fuse link 300) further into the receiving trenches 103 and lock it by turning it.
  • the longitudinal axis A of the fuse holder 1, the housing 100 and (not shown in FIGS. 1 and 2) the receiving tube 103 is indicated in all the figures.
  • FIGS. 1 and 4 to 9 The front F and the rear B of the fuse holder 1, which are common to all its parts, are shown in FIGS. 1 and 4 to 9.
  • Fig. 1 it can be seen that the flange 101 abuts the front F of the control panel S, while the remaining part of the housing 100 has passed through the hole SL, and the nut 114 sitting on the external thread 113 holds the housing 100 in position. Also visible is a connection part 138 protruding downward from the rear end of the housing 100, which is shown here in the form of a solder tab, but also a different shape, e.g. that could have a plug or socket.
  • a screw slot 210 is provided on the front side of the carrier head 201 shown there, so that the slot 200 according to FIGS. 5 and 6 in the recess 102 of the flange 101 of the housing 100 in the locked position of the carrier 200 can be rotated with a screwdriver (not shown) for unlocking and can thus be transferred from the locked state shown in FIGS. 5 and 6 to the unlocked state shown in FIG. 7 (in which the head 201 protrudes from the housing 100).
  • the trough 202 of the carrier 200, and with it the fuse insert 300 therein, has also been rotated by the rotational movement when unlocking, so that the trough 202 now lies between the contact pieces 121, 131 and the end caps 301 of the fuse insert 300 in an insulating manner.
  • the two electrically conductive end caps 301 are connected to one another in a manner known per se by an insulating tube (not designated) mechanically and electrically connected by a fuse element (not visible).
  • the fuse link 300 is eccentric to the longitudinal axis A and is pivoted accordingly when unlocking.
  • the lug 111 is located at the rear end of the straight longitudinal groove section 209 (formed on the rear of the trough 202) of the groove 206, so that the carrier 200 from its unlocked state shown in FIG. 7 is now in its 8 can be converted by pulling it straight out of the receiving tube 103 as straight as possible, that is until the barbs 204 (formed on the rear end of the carrier 200) abut the annular stop 112 of the housing 100.
  • the nose 111 slides in the longitudinal groove section 209 to the front end of the longitudinal groove 209 and into the annular groove section 208 of the groove 206 (formed in the rear connecting part 205 between the trough 202 and barb 204 of the carrier 200), so that the carrier 200 is freely rotatable about the longitudinal axis A and can be transferred into the dumping state shown in FIG. 9 and from this back into the idle state shown in FIG. 8 in order to change the fuse element 300.
  • the receiving tube 103 always remains closed by the rear connecting part 205, as a result of which the desired full protection is guaranteed.
  • the contact pieces 121 and 131 each consist of a knob 122 or 132 on a spring arm 123 or 133.
  • Each of these spring arms 123 or 133 stands in an associated frame 124 or 134 (which also serves for the suspension and also a support spring 125 or . 135 has) into it.
  • Each of the frames 124 and 134 is provided on one of the two differently long feed lines 126 and 136, respectively are in turn connected to one of the two connecting parts 128 and 138.
  • the connecting parts 128 and 138 associated with the contact pieces 121 and 131, and thus from the rear end of the receiving tube 103 are at different axial distances and are thus clearly spaced apart.
  • the frames 124 and 134 extend so asymmetrically on different sides of the feed line 126 and 136 that the feed lines 126 and 136 come to lie on different sides of the opening 105 of the receiving tube wall 104 when the contact knobs 122 and 132 in this breakthrough are 105. This ensures good insulation of the contact pieces, their supply lines and the connecting parts from each other.
  • the two contact units (each consisting of a contact piece, frame, supply line and connecting part) are securely held in the gap 109 between the walls 104 and 106 in that each connecting part 128 and 138 is held in an associated slot 107 in the outer wall 106, and sliding out by the engagement of a detent spring 127 or 137 engages in the associated opening 108 (in 106).
  • a meeting of the contact units is also prevented by the longitudinal division 110 in the gap 109.
  • the two contact pieces could also engage radially from different sides through separate openings in the receiving tube, as is e.g. in the case of a fuse holder according to DE-A-31 01 225.5, the longitudinal subdivision 110 just mentioned eliminated or could be designed in some other way. Then, instead of the rotating unlocking, a snap should be sought, which could make poking out necessary. Of course, one would then train the carrier analogously to DE-A-31 01 225.5, as was already known elsewhere, for safety against contact.

Landscapes

  • Fuses (AREA)
EP19870107179 1987-03-17 1987-05-18 Berührungssicherer elektrischer Sicherungshalter Expired - Lifetime EP0282624B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH98587A CH671482A5 (enrdf_load_stackoverflow) 1987-03-17 1987-03-17
CH985/87 1987-03-17

Publications (3)

Publication Number Publication Date
EP0282624A2 EP0282624A2 (de) 1988-09-21
EP0282624A3 EP0282624A3 (en) 1990-01-31
EP0282624B1 true EP0282624B1 (de) 1991-04-10

Family

ID=4199797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870107179 Expired - Lifetime EP0282624B1 (de) 1987-03-17 1987-05-18 Berührungssicherer elektrischer Sicherungshalter

Country Status (4)

Country Link
EP (1) EP0282624B1 (enrdf_load_stackoverflow)
CH (1) CH671482A5 (enrdf_load_stackoverflow)
DE (1) DE3769308D1 (enrdf_load_stackoverflow)
ES (1) ES2022195B3 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104781993A (zh) 2012-10-19 2015-07-15 李尔公司 电气端子
US9293852B2 (en) 2013-06-21 2016-03-22 Lear Corporation Electrical terminal assembly
US9444205B2 (en) 2014-03-25 2016-09-13 Lear Corporation Electric connector with contact protection
US10128602B2 (en) 2014-05-13 2018-11-13 Lear Corporation Electric connector with a terminal interface
US9847591B2 (en) 2014-07-22 2017-12-19 Lear Corporation Electric terminal assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6919101U (de) * 1968-05-06 1969-10-09 Philips Nv Sicherheitspatronenhalter
GB1336611A (en) * 1971-05-06 1973-11-07 Belling & Lee Ltd Fuse holders
ZA80536B (en) * 1979-02-06 1981-08-26 Beswick K Ltd An electrical fuse holder
CH642773A5 (en) * 1979-07-03 1984-04-30 Weber Ag Fab Elektro Fuse holder for a miniature fuse insert
FR2473781A1 (fr) * 1980-01-15 1981-07-17 Lmi France Porte-fusible de securite
CH653176A5 (de) * 1981-11-25 1985-12-13 Schurter Ag Sicherungshalter.

Also Published As

Publication number Publication date
DE3769308D1 (de) 1991-05-16
EP0282624A2 (de) 1988-09-21
EP0282624A3 (en) 1990-01-31
ES2022195B3 (es) 1991-12-01
CH671482A5 (enrdf_load_stackoverflow) 1989-08-31

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