EP0041523A1 - Perfectionnements aux dispositifs de coupure a conducteur destructible par effet pyrotechnique avec systeme fusible en derivation. - Google Patents
Perfectionnements aux dispositifs de coupure a conducteur destructible par effet pyrotechnique avec systeme fusible en derivation.Info
- Publication number
- EP0041523A1 EP0041523A1 EP80902391A EP80902391A EP0041523A1 EP 0041523 A1 EP0041523 A1 EP 0041523A1 EP 80902391 A EP80902391 A EP 80902391A EP 80902391 A EP80902391 A EP 80902391A EP 0041523 A1 EP0041523 A1 EP 0041523A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intermediate part
- destructible
- upstream
- conductor
- upstream part
- 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.)
- Granted
Links
- 230000000694 effects Effects 0.000 title claims abstract description 7
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims description 22
- 238000004080 punching Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 238000004880 explosion Methods 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/10—Adaptation for built-in fuses
- H01H9/106—Adaptation for built-in fuses fuse and switch being connected in parallel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/006—Opening by severing a conductor
Definitions
- a device for ultra-rapid cutting of an electrical circuit, in which an insulating member forming a punching piston is repelled by a pyrotechnic charge so as to cut off a destructible electrical conductor.
- the displacement of this piston is generally transverse with respect to the conductor, but it can also be provided for longitudinally.
- the destructible conductor comprises an upstream part having the form of a socket in which the punching piston slides, the external face of the bottom of this socket being extended by an intermediate part which engages in friction in the bore of a downstream part disposed at a certain distance from this bottom, the three parts being co-axial with one another.
- the punching piston cuts the bottom of the sleeve to separate the intermediate part, which it pushes back into the bore of the downstream part.
- the invention aims to improve devices of this kind.
- the intermediate part is in one piece with the downstream part to which it is connected by an annular zone with a small section, so that the whole of the destructible conductor constitutes only a single part.
- FIG. l is a general axial section of a device according to the invention in its normal closed circuit position.
- FIG. 2 partially reproduced in fig. 1, but showing the parts in the open position of the circuit.
- the device shown in fig. 1 comprises a destructible conductor 1 having the shape of a substantially cylindrical body which can be divided into three parts starting from the left, namely an upstream part la_ in the form of a socket, then an intermediate part 1b whose diameter is found reduced to a considerable extent by an annular groove l £ and finally a downstream part ld_ comprising a blind bore le_ of diameter barely greater than that of the intermediate part lb.
- the upstream part la_ delimits a cylindrical interior space whose bottom lf_ is in the form of a flared cone with a central cylindrical depression l £ of shallow depth and of diameter slightly smaller than that of the intermediate part lb_.
- the arrangement is such that this depression leaves only a connecting zone lh with a small section between this part lb_ and the upstream part la_.
- the wall of the cylindrical interior space of the upstream part 1a is coated with a sleeve 2 of small thickness, made of insulating material.
- a sleeve 2 of small thickness made of insulating material.
- a laminated insulating material piston 3 h whose non-thermoplastic strength, whose face turned towards the bottom of said space is shaped to match the profile thereof, namely with a frustoconical surface 3a_ and a central cylindrical boss 3b_, it being however noted that the length of this boss is notably greater than the depth of the depression l.
- the piston 3 is normally completely pushed back to the left so that its boss 3b_ touches the bottom of the depression lg, so that an empty space 4 of appreciable width is provided between the frustoconical surfaces facing the bottom of the part la_ and of this piston 3.
- the face of the piston 3 opposite the boss 3b_ is hollowed out with a blind bore 3 £ in which is engaged one of the ends of a pyrotechnic engine 5.
- the latter comprises a metallic main body 5a_ containing the pyrotechnic charge as such, properly speaking, a piston 5b which protrudes from this body to come to the bottom of the bo-gne bore 3ç_ and at its opposite end a head 5 to which lead the electrical ignition conductors 6.
- the body 5a_ is provided with a rib or flange 5d against which bears a ring 7 in thermosetting material clamped by the inner rim of a metal crown 8 screwed into the threaded outlet of the upstream part 1a.
- the intermediate part lb_ is pierced axially with a tapped hole into which is screwed the end of a rod 9 which extends in the blind bore le_ of the downstream part ld_.
- the outlet of this bore is internally threaded to receive a metal plug 10 pierced with an axial bore 10a_ with a small cone angle converging towards the outside, this bore receiving the end 9a_ of the rod 9, provided at a cone angle identical.
- the groove l £ which defines the intermediate part lb_ is closed by a sleeve 11 extending on either side thereof over a fraction of the length of the upstream and downstream parts la. and ld_.
- This sleeve is made of thermosetting material reinforced with glass fibers so as to have a high mechanical tensile strength in the longitudinal direction.
- the sleeve 11 can be provided and mounted so as to close the groove l £ in a perfectly sealed manner, if desired.
- the device finally comprises several fuse cartridges 13 regularly arranged around the sleeve 11.
- the number of these cartridges can vary depending on the case, the essential being only that there are at least two of them
- the ends of these cartridges are fitted with metal contact brackets 14, the horizontal branch of which is permanently fixed to the upstream and downstream parts la and ld_ of the destructible conductor 1 beyond the sleeve 11 by screws 15.
- the device To use the device that has just been described, it is mounted on a suitable support by means of metal clamps from around the ends of the upstream and downstream parts. and ld_ to constitute circuiting terminals.
- the current normally passes almost entirely through the intermediate part lb whose resistance ohmic is significantly lower than that of all of the cartridges 13 which are therefore crossed only by a very small fraction of the intensity thereof and do not undergo any appreciable heating.
- the wires 6 being connected to an appropriate control device, for example to an overcurrent detector, when the latter sends a signal, the charge contained by the motor 5 explodes. The.
- the annular chamber or sectioning chamber 16 defined by the annular groove l £ remains isolated from the outside and therefore it can not form there a surface deposit of dust or other impurities likely to carry out a path of passage between the upstream and downstream parts. and ld_ during the overvoltage which follows the operation of the cartridges 13. It is even possible, if desired, to fill this chamber 16 with a suitable solid, liquid, or even gas capable of opposing any arc formation during such an overvoltage.
- the first is balanced by the opposite reaction applied to the ring 7.
- the second it is theoretically supported by the sleeve 11. But experience shows that the shear phenomenon is so short that the inertia of the mass of the downstream part ld_ is practically enough to resist it (in other words, if the studs 12 are able to tear the sleeve 11 locally, this only appears over a negligible length of the latter and does not modify anything in operation ).
- this ring of cartridges can be produced in a thick insulating sleeve attached to the sleeve 11 of FIG. 1 and 2.
Landscapes
- Fuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7931174A FR2471662A1 (fr) | 1979-12-12 | 1979-12-12 | Perfectionnements aux dispositifs de coupure a conducteur destructible par effet pyrotechnique avec systeme fusible en derivation |
FR7931174 | 1979-12-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0041523A1 true EP0041523A1 (fr) | 1981-12-16 |
EP0041523B1 EP0041523B1 (fr) | 1984-11-28 |
Family
ID=9232961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80902391A Expired EP0041523B1 (fr) | 1979-12-12 | 1980-12-10 | Perfectionnements aux dispositifs de coupure a conducteur destructible par effet pyrotechnique avec systeme fusible en derivation |
Country Status (8)
Country | Link |
---|---|
US (1) | US4385216A (fr) |
EP (1) | EP0041523B1 (fr) |
JP (2) | JPS56501783A (fr) |
BE (1) | BE887194A (fr) |
DE (1) | DE3069722D1 (fr) |
DK (1) | DK156499C (fr) |
FR (1) | FR2471662A1 (fr) |
WO (1) | WO1981001770A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3367265B2 (ja) * | 1995-04-06 | 2003-01-14 | 富士電機株式会社 | 電流遮断装置 |
KR100851478B1 (ko) | 2003-08-08 | 2008-08-08 | 델피 테크놀로지스 인코포레이티드 | 회로 차단 장치와, 전기 회로의 접속을 위한 안전 장치와, 전기 회로의 안전을 향상시키는 방법 |
FR2869450B1 (fr) * | 2004-04-23 | 2007-03-02 | Conception Et Dev Michelin Sa | Dispositif de coupure pour circuit electrique, a declenchement pilote |
PL1710871T3 (pl) * | 2005-04-08 | 2008-01-31 | Auto Kabel Man Mbh | Przerywacz prądu dla samochodowych elektrycznych przewodów zasilających |
ATE390702T1 (de) * | 2005-09-22 | 2008-04-15 | Delphi Tech Inc | Vorrichtung zum trennen eines elektrischen leiters |
DE102008044774A1 (de) * | 2008-08-28 | 2009-10-15 | Audi Ag | Parallelschaltung aus einer pyrotechnischen Sicherung und einer weiteren Sicherung für ein Kraftfahrzeug |
DE102008055904B4 (de) * | 2008-11-05 | 2018-03-22 | Auto-Kabel Management Gmbh | Steckverbindung für ein Insassenschutzmittel |
DE102010011150B4 (de) * | 2010-03-11 | 2012-03-29 | Auto-Kabel Managementgesellschaft Mbh | Elektrische Sicherung für Kraftfahrzeugenergieleitungen und Herstellungsverfahren für eine solche Sicherung |
FR3051281B1 (fr) * | 2016-05-16 | 2020-06-05 | Mersen France Sb Sas | Dispositif de coupure electrique et systeme electrique securise comprenant un tel dispositif |
FR3099287B1 (fr) * | 2019-07-25 | 2023-06-30 | Arianegroup Sas | Dispositif de coupure pyrotechnique |
DE102023107532A1 (de) | 2023-03-24 | 2024-09-26 | Audi Aktiengesellschaft | Pyro-Sicherung zum Durchtrennen eines elektrischen Leiters und Kraftfahrzeug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2816196A (en) * | 1951-05-04 | 1957-12-10 | Roland G Dandelin | Detonator electrical switch |
US2983801A (en) * | 1959-02-20 | 1961-05-09 | Gen Electric | High current disconnect device |
US3264438A (en) * | 1964-04-29 | 1966-08-02 | Atlas Chem Ind | Positive action circuit breaking switch |
GB1240035A (en) * | 1968-01-20 | 1971-07-21 | Fuji Electric Co Ltd | Electric circuit breaker |
JPS4924742A (fr) * | 1972-06-30 | 1974-03-05 | ||
JPS5134113A (ja) * | 1974-09-18 | 1976-03-23 | Showa Denko Kk | Gurishinnofunbetsushutokuhoho |
-
1979
- 1979-12-12 FR FR7931174A patent/FR2471662A1/fr active Granted
-
1980
- 1980-12-10 WO PCT/FR1980/000178 patent/WO1981001770A1/fr active IP Right Grant
- 1980-12-10 DE DE8080902391T patent/DE3069722D1/de not_active Expired
- 1980-12-10 US US06/290,811 patent/US4385216A/en not_active Expired - Fee Related
- 1980-12-10 JP JP50016781A patent/JPS56501783A/ja active Pending
- 1980-12-10 EP EP80902391A patent/EP0041523B1/fr not_active Expired
-
1981
- 1981-01-22 BE BE6/47378A patent/BE887194A/fr not_active IP Right Cessation
- 1981-08-07 DK DK350981A patent/DK156499C/da not_active IP Right Cessation
-
1989
- 1989-02-20 JP JP1989017965U patent/JPH01135634U/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO8101770A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK156499C (da) | 1990-04-23 |
BE887194A (fr) | 1981-05-14 |
DE3069722D1 (en) | 1985-01-10 |
DK156499B (da) | 1989-08-28 |
JPS56501783A (fr) | 1981-12-03 |
EP0041523B1 (fr) | 1984-11-28 |
FR2471662A1 (fr) | 1981-06-19 |
WO1981001770A1 (fr) | 1981-06-25 |
US4385216A (en) | 1983-05-24 |
JPH01135634U (fr) | 1989-09-18 |
FR2471662B1 (fr) | 1982-10-08 |
DK350981A (da) | 1981-08-07 |
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Legal Events
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