EP1469205B1 - Elément de force - Google Patents

Elément de force Download PDF

Info

Publication number
EP1469205B1
EP1469205B1 EP04008316A EP04008316A EP1469205B1 EP 1469205 B1 EP1469205 B1 EP 1469205B1 EP 04008316 A EP04008316 A EP 04008316A EP 04008316 A EP04008316 A EP 04008316A EP 1469205 B1 EP1469205 B1 EP 1469205B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder sleeve
plunger
force element
accordance
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
EP04008316A
Other languages
German (de)
English (en)
Other versions
EP1469205A3 (fr
EP1469205A2 (fr
Inventor
Uwe Brede
Anton Bretfeld
Josef Storath
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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
Priority claimed from DE102004009444A external-priority patent/DE102004009444A1/de
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1469205A2 publication Critical patent/EP1469205A2/fr
Publication of EP1469205A3 publication Critical patent/EP1469205A3/fr
Application granted granted Critical
Publication of EP1469205B1 publication Critical patent/EP1469205B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/19—Pyrotechnical actuators

Definitions

  • the invention relates to a force element according to the preamble of claim 1 ( EP-A-0731004 ).
  • Power elements are used to initiate, trigger or directly actuate mechanical control operations.
  • a piston on which a plunger is arranged moves, which then extends out of the housing the plunger and thus can initiate a mechanical movement process by exerting force.
  • power elements of this design are complicated and expensive. Especially in the automotive security sector requires solutions with high technical performance at low price.
  • the invention is based on the object to improve a force element according to the preamble of claim 1 so that it is more stable.
  • the piston has a larger diameter than the plunger and both are interconnected via an annular shoulder.
  • the cylinder sleeve is adapted to this and has a larger diameter in the region of the piston than in the region of the plunger.
  • the transition of the cylinder sleeve from the larger to the smaller diameter in the extended state of the plunger serves as a stop for the annular shoulder of the piston.
  • the cylinder sleeve is made of a metal.
  • a preferably semicircular bulge is introduced in the piston on the end facing the drive element.
  • the wall of the cylinder sleeve is advantageously bent outwards, so that the cylinder sleeve is better anchored in the surrounding housing.
  • a sealing ring is embedded on the outer circumference of the piston.
  • the plunger is anchored after the ignition of the drive element in its driven position, the plunger is preferably formed at its end facing away from the piston conical, so that it passes when expelled in a press fit with the cylinder sleeve.
  • the housing is made of plastic.
  • a method for producing a force element according to the invention is characterized in that the cylinder sleeve, the drive element and the piston are manufactured individually with the plunger and then mounted closed as a kit and is finally surrounded by the plastic housing.
  • mechanical control problems can be solved as a modular system that can be adapted to a wide variety of tasks.
  • the three functional elements of the force element according to the invention as pyrotechnic drive element 1 (see Figure 1), plunger 2 with integrated piston 2a and sealing ring 4 and the cylinder sleeve 3 are manufactured individually and then mounted as a kit closed and after a variety of customer installation conditions with a plastic housing 5 (see Also Fig. 2) surrounded.
  • This modular system has the advantage that the actual functional unit consisting of drive element 1, plunger 2 with piston 2a and cylinder sleeve 3 can be adapted without restriction with an outer shape of the housing for a variety of installation conditions.
  • FIG. 2 shows various embodiments of the outer adaptation geometry with a very wide variety of housings 5.
  • an electrical tripping current pulse is applied to the connector pins 6 of the drive element 1 via a sensor system.
  • the pyrotechnic drive charge is ignited in the drive element 1, whereby a drive pressure in the region of the piston 2 a arises, which expels the plunger 2 via the piston 2 a.
  • the formed by the transition of the piston 2a to the plunger 2 annular shoulder 7 can strike in its final position to the cylinder sleeve 3 and thus be slowed down.
  • the plunger 2 may also be slightly conical, so that it passes during expulsion by the conicity in a press fit with the cylinder sleeve 3.
  • a plug receptacle is designated with Verrastungsform, via which the plug to the pins 6 of the drive element 1 can be fastened.
  • the cylinder sleeve 3 is formed open at its end faces, wherein on one end side, the drive element 1 is inserted and on the other end of the Plunger 2 is arranged or protruding.
  • the plunger 2 has on the side facing the drive element 1 a piston 2a, which has a larger diameter than the plunger 2 and is connected thereto via an annular shoulder 7.
  • the cylinder sleeve 3 which has a larger diameter in the region of the piston 2a and the drive element 1 than at the end of the cylinder sleeve 3 opposite the drive element 1.
  • the transition 10 of the cylinder sleeve 3 from the larger to the smaller diameter is used in the extended state of the plunger 2 as a stop 11 for the piston 2a.
  • a semicircular bulge 9 is introduced in the piston 2a.
  • Figure 2 shows various housing 5 of the force element, namely as a quarter-circle in the section, triangular with z.
  • B. a dovetail groove 12 for attachment, round or rectangular.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (9)

  1. Elément de force comprenant une douille cylindrique (3) aux extrémités frontales ouvertes, dans laquelle est disposé un élément de propulsion générateur de gaz (1) et un piston (2a) comprenant un poussoir (2) disposé sur le piston (2a), le piston pouvant être accéléré, par les gaz propulseurs générés par l'élément propulseur (1), jusque dans la position de déploiement du poussoir (2) hors de la douille cylindrique (3), l'élément propulseur (1) étant emmanché dans une première extrémité frontale de la douille cylindrique, et le poussoir (2) étant disposé dans une seconde extrémité frontale,
    caractérisé en ce que l'élément de force se situe à l'intérieur d'un boîtier (5), et qu'aux extrémités frontales, la paroi de la douille cylindrique (3) est repliée perpendiculairement vers l'extérieur.
  2. Elément de force selon la revendication 1, caractérisé en ce que le piston (2a) présente un plus grand diamètre que le poussoir (2), et que les deux sont reliés l'un à l'autre par l'intermédiaire d'un épaulement annulaire (7), la douille cylindrique (3) présentant, au niveau du piston (2a), un plus grand diamètre qu'au niveau du poussoir (2).
  3. Elément de force selon la revendication 2, caractérisé en ce qu'à l'état déployé du poussoir (2), la partie de transition (10) de la douille cylindrique (3), entre le plus grand diamètre et le plus petit diamètre, sert de butée (11) à l'épaulement annulaire (7) du piston (2a).
  4. Elément de force selon la revendication 2 ou 3, caractérisé en ce que la partie de transition (10) de la douille cylindrique (3), entre le plus grand diamètre et le plus petit diamètre, est produite par refoulement et/ou plissage de la douille cylindrique (3).
  5. Elément de force selon l'une des revendications 1 à 4, caractérisé en ce que la douille cylindrique (3) est faite en un métal.
  6. Elément de force selon l'une des revendications 1 à 5, caractérisé en ce qu'une cavité (9), de préférence d'une forme semi-circulaire, est aménagée dans l'extrémité du piston (2a), qui est tournée vers l'élément propulseur (1).
  7. Elément de force selon l'une des revendications 1 à 6, caractérisé en ce qu'une bague d'étanchéité (4) est insérée dans la périphérie extérieure du piston (2a).
  8. Elément de force selon l'une des revendications 1 à 7, caractérisé en ce que le poussoir (2) présente, a son extrémité éloignée du piston (2a), une configuration conique.
  9. Elément de force selon l'une des revendications 1 à 8, caractérisé en ce que le boîtier (5) est fait en matière plastique.
EP04008316A 2003-04-19 2004-04-06 Elément de force Expired - Lifetime EP1469205B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10317987 2003-04-19
DE10317987 2003-04-19
DE102004009444 2004-02-27
DE102004009444A DE102004009444A1 (de) 2003-04-19 2004-02-27 Kraftelement

Publications (3)

Publication Number Publication Date
EP1469205A2 EP1469205A2 (fr) 2004-10-20
EP1469205A3 EP1469205A3 (fr) 2005-05-11
EP1469205B1 true EP1469205B1 (fr) 2007-08-15

Family

ID=32909561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04008316A Expired - Lifetime EP1469205B1 (fr) 2003-04-19 2004-04-06 Elément de force

Country Status (3)

Country Link
EP (1) EP1469205B1 (fr)
AT (1) ATE370336T1 (fr)
DE (1) DE502004004612D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8635872B2 (en) 2007-09-14 2014-01-28 Ruag Ammotec Gmbh Pyrotechnical actuator
FR2966431B1 (fr) * 2010-10-22 2012-12-21 Dassault Aviat Actionneur pneumatique d'ejection d'un emport porte par un aeronef et procede d'ejection associe
AT12531U1 (de) * 2011-05-23 2012-07-15 Hirtenberger Automotive Safety Gmbh & Co Kg Pyrotechnischer aktuator
AT511500B1 (de) * 2011-05-23 2013-02-15 Hirtenberger Automotive Safety Gmbh & Co Kg Pyrotechnischer Aktuator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747977C2 (de) * 1977-10-26 1986-06-19 Dynamit Nobel Ag, 5210 Troisdorf Elektrisch auslösbares Kraftelement mit ausstoßendem Kolben
FR2731398B1 (fr) * 1995-03-10 1997-05-30 Ecia Equip Composants Ind Auto Actionneur a declenchement pilote de manoeuvre d'un organe, par exemple de vehicule automobile
DE60111319T2 (de) * 2000-08-04 2006-03-23 Automotive Systems Laboratory Inc., Farmington Hills Pyrotechnischer Aktuator
DE10203710C1 (de) * 2002-01-31 2003-02-13 Thomas Magnete Gmbh Pyrotechnischer Aktor

Also Published As

Publication number Publication date
DE502004004612D1 (de) 2007-09-27
EP1469205A3 (fr) 2005-05-11
ATE370336T1 (de) 2007-09-15
EP1469205A2 (fr) 2004-10-20

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