DE19820757B4 - Squib for an airbag - Google Patents
Squib for an airbag Download PDFInfo
- Publication number
- DE19820757B4 DE19820757B4 DE1998120757 DE19820757A DE19820757B4 DE 19820757 B4 DE19820757 B4 DE 19820757B4 DE 1998120757 DE1998120757 DE 1998120757 DE 19820757 A DE19820757 A DE 19820757A DE 19820757 B4 DE19820757 B4 DE 19820757B4
- Authority
- DE
- Germany
- Prior art keywords
- housing
- squib
- contact pin
- plastic
- pyrotechnic charge
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01006—Mounting of electrical components in vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R2021/26029—Ignitors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Zündpille
zum Auslösen
eines Kraftfahrzeug-Airbags, die aufweist:
– ein Gehäuse (1) aus Kunststoff,
– eine vom
Gehäuse
(1) eingeschlossene pyrotechnische Ladung (4),
– wenigstens
einen Kontaktstift (2), der mit einem Kontaktende (21) aus dem Gehäuse (1)
ragt,
– einen
im Gehäuse
(1) angeordneten Dichtungsabschnitt (22) des wenigstens einen Kontaktstifts
(2), der vom Kunststoff des Gehäuses
(1) umschlossen und mechanisch kontaktiert ist, und
– mindestens
eine umlaufende, V-förmige
Vertiefung (24) des wenigstens einen Kontaktstifts (2) im Dichtungsabschnitt
(22).A squib for deploying an automotive airbag, comprising:
A housing (1) made of plastic,
A pyrotechnic charge (4) enclosed by the housing (1),
At least one contact pin (2) projecting out of the housing (1) with a contact end (21),
- One in the housing (1) arranged sealing portion (22) of the at least one contact pin (2), which is surrounded by the plastic of the housing (1) and mechanically contacted, and
- At least one circumferential, V-shaped recess (24) of the at least one contact pin (2) in the sealing portion (22).
Description
Die Erfindung betrifft eine Zündpille zum Auslösen eines Kraftfahrzeug-Airbags.The Invention relates to a squib to trigger a motor vehicle airbag.
Bekannte Zündpillen enthalten eine pyrotechnische Ladung, die zum Auslösen eines Airbags bestimmt ist. Die pyrotechnische Ladung treibt üblicherweise einen Gasgenerator, der bei einem Unfall den Airbag mit Gas füllt. Das Zünden der pyrotechnischen Ladung erfolgt auf ein externes Signal hin. Dieses wird über Steckerstifte in das Innere des Gehäuses übertragen.Known squibs contain a pyrotechnic charge that triggers a Airbags is determined. The pyrotechnic charge usually drives a gas generator that fills the airbag with gas in an accident. The Ignite the pyrotechnic charge is due to an external signal. This is about Transfer pins into the interior of the housing.
Um die Gebrauchsfähigkeit der pyrotechnischen Ladung zu gewährleisten, muß das Gehäuse hermetisch abgedichtet sein. Regelmäßig wird gefordert, daß die hermetische Abdichtung für einen Zeitraum von mindestens 15 Jahre gesichert ist.Around the usability To ensure the pyrotechnic charge, the housing must be hermetic be sealed. Regularly demanded that the hermetic seal for a period of at least 15 years.
Um dieser Anforderung zu genügen, werden die Steckerstifte mit einer Glas-Metall-Durchführung in das Gehäuse eingebettet. Eine Gehäusekappe wird mit der verglasten Masse verschweißt. Diese Art der Abdichtung ist in der Herstellung aufwendig und teuer.Around to meet this requirement, be the connector pins with a glass-metal-carrying in the housing embedded. A case cap will welded to the glazed mass. This type of sealing is costly and expensive to manufacture.
Aus
der Patentschrift
Aus
der Offenlegungsschrift
Aus
der Patentschrift
Es ist ein Ziel der Erfindung, eine Zündpille mit einem hermetisch dichten Gehäuse zu schaffen, die einfach und kostengünstig gefertigt werden kann.It It is an object of the invention to provide a squib with a hermetic tight housing to create that can be easily and inexpensively manufactured.
Dieses Ziel wird mit einer Zündpille erreicht, wie sie definiert ist. Vor teilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This The goal is with a squib achieved as it is defined. Before some refinements of the invention are in the subclaims specified.
Dichtigkeitsprobleme bei der Verbindung von Metall und Kunststoff werden erfindungsgemäß vermieden, indem die Kontaktstifte oder Steckerstifte nicht als glatte Drähte oder Stifte ausgebildet sind, sondern mit wenigstens einer ringförmigen Verformung oder Vertiefung im Dichtungsabschnitt versehen sind.leakage problems in the connection of metal and plastic are avoided according to the invention, by not using the pins or pins as smooth wires or Pins are formed, but with at least one annular deformation or recess in the sealing portion are provided.
Insbesondere wenn die Vertiefung kantig ausgestaltet ist, bleiben beim Umspritzen der Kontaktstifte mit Kunststoff Hohlräume zurück, da beim Spritzgießen die Luft nicht voll ständig entweichen kann. Es kommt zu einem teilweisen Verbrennen von Kunststoff („Dieseleffekt"). Die so entstehenden, mit Gas, regelmäßig mit Luft gefüllten Hohlräume unterbrechen den schmalen Spalt zwischen dem Kunststoffgehäuse und dem metallischen Stift, der sich fertigungstechnisch nicht vermeiden läßt. Damit wird die Kapillarwirkung des Spaltes unterbunden und das Vordringen von Feuchtigkeit in das Gehäuseinnere verhindert.Especially if the depression is edged, stay with the encapsulation the contact pins with plastic cavities back, since in injection molding the Air not full constantly can escape. It comes to a partial burning of plastic ("Diesel effect"). with gas, regularly with Air-filled cavities interrupt the narrow gap between the plastic housing and the metallic pin, which can not be avoided in terms of manufacturing technology leaves. In order to the capillary action of the gap is prevented and the penetration moisture in the interior of the housing.
Eine besonders günstige Wirkung wird erzielt, wenn mehrere axial beabstandete Hohlräume in Serie am Kontaktstift angeordnet sind.A especially cheap Effect is achieved when multiple axially spaced cavities in series are arranged on the contact pin.
Eine Vertiefung erhöht zudem die Festigkeit der Verbindung des Kontaktstifts mit dem Kunststoffgehäuse und insbesondere die Belastbarkeit der Verbindung auf Zug und Druck.A Depression increased In addition, the strength of the connection of the contact pin with the plastic housing and in particular the load capacity of the connection to train and pressure.
Besonders ausgeprägte Hohlräume entstehen dann, wenn die Vertiefung V-förmig gestaltet ist.Especially pronounced cavities arise when the recess is V-shaped.
In einer bevorzugten Ausführungsform ist eine umlaufende Vertiefung jeweils zwischen zwei ringförmigen Vorsprüngen ange ordnet. Die Wirkung eines Vorsprungs ist am größten, wenn der Vorsprung spitz oder kantig zuläuft.In a preferred embodiment is a circumferential recess in each case between two annular projections arranged. The effect of a projection is greatest when the projection is pointed or edged.
Vorzugsweise wird das Gehäuse einstückig aus Kunststoff gebildet und kontaktiert einen oder mehrere Kontaktstifte unmittelbar mechanisch ohne weitere Dichtungsmaßnahmen.Preferably becomes the case in one piece Plastic formed and contacted one or more pins directly mechanically without further sealing measures.
Die erfindungsgemäße Zündpille eignet sich sowohl für Anwendungen, bei denen eine im Gehäuse angeordnete elektronische Schaltung die Zündung der pyrotechnischen Ladung auslöst, als auch für Zündpillen, deren pyrotechnische Ladung alleine durch einen externen Impuls gezündet wird.The Inventive squib is suitable for both Applications in which an arranged in the housing electronic Switch the ignition the pyrotechnic charge triggers, as well as for squibs their pyrotechnic charge alone by an external impulse ignited becomes.
Weitere Vorteile der Erfindung ergeben sich aus der Beschreibung eines Ausführungsbeispiels in Verbindung mit den Zeichnungen. Es zeigen:Further Advantages of the invention will become apparent from the description of an embodiment in conjunction with the drawings. Show it:
Ein
Kontaktende
Die
Kontaktstifte
Der
Schaltungsträger
In
Jeweils
zwischen
Beim
Umspritzen des Kontaktstifts
Durch
die Aufeinanderfolge mehrerer solcher Vertiefungen
Während im
Bereich einer V-förmigen
Vertiefung
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998120757 DE19820757B4 (en) | 1998-05-08 | 1998-05-08 | Squib for an airbag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998120757 DE19820757B4 (en) | 1998-05-08 | 1998-05-08 | Squib for an airbag |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19820757A1 DE19820757A1 (en) | 1999-11-18 |
DE19820757B4 true DE19820757B4 (en) | 2005-08-04 |
Family
ID=7867191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998120757 Expired - Fee Related DE19820757B4 (en) | 1998-05-08 | 1998-05-08 | Squib for an airbag |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19820757B4 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002081268A1 (en) * | 2001-04-03 | 2002-10-17 | Nknm Limited | Unitary header/base/shorting bar holder for a micro gas generator, and micro gas generator using it |
DE102006041641B4 (en) * | 2006-09-05 | 2009-03-12 | Siemens Ag | Housing for a functional module and method for producing the housing |
DE102008049650A1 (en) * | 2008-09-30 | 2010-04-01 | Trw Airbag Systems Gmbh | Gas generator, particularly for passenger restraint system, has one component and another component, which is connected by squirted plastic base with former component |
JP2012504073A (en) | 2008-09-30 | 2012-02-16 | ティーアールダブリュー・エアバッグ・システムズ・ゲーエムベーハー | Inflator, method for manufacturing inflator, and module including the inflator |
DE102012102851B4 (en) * | 2012-04-02 | 2015-05-28 | Phoenix Contact Gmbh & Co. Kg | Flexible wall duct for an electrical signal |
WO2016078634A1 (en) | 2014-11-17 | 2016-05-26 | Günter Dürschinger | Ignition capsule for occupant restraint systems |
DE102014016923B3 (en) * | 2014-11-17 | 2016-02-25 | Elisabeth Dürschinger | Primer for occupant restraint systems |
DE102015014124A1 (en) | 2015-11-03 | 2017-05-04 | Ems-Patvag s.r.o. | Primer for occupant restraint systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2811351A1 (en) * | 1978-03-16 | 1979-09-27 | Dynamit Nobel Ag | METHOD OF MANUFACTURING AN IGNITION PILL FOR ELECTRIC BRIDGE IGNITORS |
DE3837332C2 (en) * | 1988-11-03 | 1991-05-02 | Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De | |
US5728964A (en) * | 1993-10-20 | 1998-03-17 | Quantic Industries, Inc. | Electrical initiator |
-
1998
- 1998-05-08 DE DE1998120757 patent/DE19820757B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2811351A1 (en) * | 1978-03-16 | 1979-09-27 | Dynamit Nobel Ag | METHOD OF MANUFACTURING AN IGNITION PILL FOR ELECTRIC BRIDGE IGNITORS |
DE3837332C2 (en) * | 1988-11-03 | 1991-05-02 | Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De | |
US5728964A (en) * | 1993-10-20 | 1998-03-17 | Quantic Industries, Inc. | Electrical initiator |
Also Published As
Publication number | Publication date |
---|---|
DE19820757A1 (en) | 1999-11-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19610799C1 (en) | Ignition device for triggering a restraint in a motor vehicle | |
DE102007031690B4 (en) | Metal / fixing material socket for igniters of airbags or the like passenger protection devices and ignition device with such a base | |
EP0618424B1 (en) | Ignitor | |
DE102007014044A1 (en) | Waterproof electrical connector | |
DE102005009644A1 (en) | Ignition device for a personal protection device of a motor vehicle | |
DE19820757B4 (en) | Squib for an airbag | |
EP0883789B1 (en) | Gas generator, in particular for belt tighteners | |
DE60210108T2 (en) | PYROTECHNICAL IGNITOR WITH BOARD CONTROL ARRANGEMENT | |
DE10348944B4 (en) | Hermetically sealed electrical feedthrough device and use of such | |
DE2655758A1 (en) | PYROTECHNICAL DEVICE AND METHOD FOR MANUFACTURING IT | |
DE10348943B4 (en) | Hermetically sealed electrical feedthrough device and use of such | |
DE102007025368B4 (en) | Igniter unit for a gas generator and gas generator | |
DE102005062329A1 (en) | Direct integration of the connector-side interface into the gas generator geometry | |
DE102010045624B4 (en) | Ring or plate-shaped element | |
EP0728986A1 (en) | Socket for connecting a gas discharge lamp | |
DE10348945B4 (en) | Hermetically sealed feedthrough device with an insulated pin having an oval cross-section in a circular glass seal | |
DE102012004966B3 (en) | Ignition base for pyroelectrically igniting propellant in pyroelectric igniter used in micro gas generator for e.g. airbag in motor car, has part of projecting pins, and base provided with plastic sheathing below front surface upto outlet | |
DE10311626B4 (en) | Lighter and method for its production | |
DE10018411B4 (en) | Ignition device for pyrotechnic gas generators | |
AT412127B (en) | Igniter for motor vehicle air bag pyrotechnic has electronics encased in resin capsule inserted into sealed igniter housing | |
DE19639133A1 (en) | Water-tight miniature electrical detonation device | |
DE10125354A1 (en) | Detonation device for passenger restraint device in automobile has fuse wire between 2 parallel contact pins embedded in detonation material held in place by indented sidewalls of detonation chamber | |
DE202004011348U1 (en) | Igniter for a gas generator or actuator for a vehicle safety device has isolating cover with holder for the igniter | |
EP1477764A1 (en) | Ignitor to be used in a protection device for vehicle occupants | |
DE19617481A1 (en) | Electric ignition device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20111201 |