FR2817520A1 - Pretensioner cartridge initiation suppressor for motor vehicle has sensor to prevent operation of pyrotechnic if belt is not buckled - Google Patents
Pretensioner cartridge initiation suppressor for motor vehicle has sensor to prevent operation of pyrotechnic if belt is not buckled Download PDFInfo
- Publication number
- FR2817520A1 FR2817520A1 FR0015818A FR0015818A FR2817520A1 FR 2817520 A1 FR2817520 A1 FR 2817520A1 FR 0015818 A FR0015818 A FR 0015818A FR 0015818 A FR0015818 A FR 0015818A FR 2817520 A1 FR2817520 A1 FR 2817520A1
- Authority
- FR
- France
- Prior art keywords
- belt
- sensor
- pyrotechnic
- motor vehicle
- seat
- 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
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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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/01544—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment
- B60R21/01546—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment using belt buckle sensors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
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La présente invention concerne un dispositif permettant d'empêcher le déclenchement d'un actionneur à cartouche pyrotechnique de prétensionnement d'une ceinture de sécurité de véhicule automobile. The present invention relates to a device making it possible to prevent the triggering of a pyrotechnic cartridge actuator for pretensioning a motor vehicle seat belt.
L'utilisation d'un actionneur pyrotechnique formant un prétensionneur pour une ceinture de sécurité équipant un siège de véhicule automobile tend à se répandre de plus en plus. Un calculateur, en recevant un signal provenant de moyens de détection de décélération brutale du véhicule résultant d'un choc de celui-ci, commande une cartouche pyrotechnique de l'actionneur pour prétensionner la ceinture. The use of a pyrotechnic actuator forming a pretensioner for a seat belt fitted to a motor vehicle seat is tending to spread more and more. A computer, receiving a signal from means for detecting sudden deceleration of the vehicle resulting from an impact thereof, controls a pyrotechnic cartridge of the actuator to pretension the belt.
Des observations de véhicules accidentés ont montré que les actionneurs pyrotechniques s'étaient déclenchés sur les sièges non occupés ou des sièges occupés mais dont la ceinture de sécurité n'était pas bouclée. Observations of damaged vehicles showed that the pyrotechnic actuators were activated on the unoccupied seats or on occupied seats but whose seat belts were not fastened.
La présente invention a pour but d'éliminer l'inconvénient susmentionné en proposant un dispositif permettant d'empêcher le déclenchement d'un actionneur à cartouche pyrotechnique de prétensionnement d'une ceinture de sécurité attribuée à un siège d'un véhicule automobile, lorsque le siège n'est pas utilisé, la cartouche pyrotechnique étant commandée par un calculateur relié à des moyens de détection de décélération brutale du véhicule notamment en cas de choc de celui-ci, et qui est caractérisé en ce qu'il comprend un capteur de détection de verrouillage de la ceinture à sa boucle d'ancrage reliée à l'actionneur, le capteur étant relié au calculateur et pouvant lui fournir un signal d'absence de verrouillage de la ceinture à la boucle de façon à ne pas commander la cartouche pyrotechnique en cas de décélération brutale du véhicule. The object of the present invention is to eliminate the aforementioned drawback by proposing a device making it possible to prevent the triggering of a pyrotechnic cartridge actuator for pretensioning a seat belt assigned to a seat of a motor vehicle, when the seat is not used, the pyrotechnic cartridge being controlled by a computer connected to means for detecting sudden deceleration of the vehicle, in particular in the event of an impact thereof, and which is characterized in that it comprises a detection sensor for locking the belt to its anchor loop connected to the actuator, the sensor being connected to the computer and being able to supply it with a signal that the belt is not locked to the loop so as not to control the pyrotechnic cartridge in sudden vehicle deceleration.
Avantageusement, le capteur est un microinterrupteur logé dans la boucle et occupant une position ouverte lorsque l'organe de verrouillage mâle en forme de pêne de la ceinture n'est pas introduit dans la boucle. Advantageously, the sensor is a microswitch housed in the loop and occupying an open position when the male locking member in the form of a bolt of the belt is not introduced into the loop.
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L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre, faite en référence à la figure unique annexée représentant un schéma synoptique fonctionnel du dispositif de déclenchement d'un actionneur pyrotechnique conforme à l'invention. The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the single appended figure representing a functional block diagram of the device. triggering of a pyrotechnic actuator according to the invention.
En se reportant à la figure unique, la référence 1 désigne une ceinture de sécurité embarquée associée à un siège (non représenté) de véhicule automobile et dont seule la partie munie de l'organe de verrouillage mâle 2 en forme de pêne est représentée. L'organe de verrouillage mâle 2 constituant le point d'ancrage inférieur de la ceinture 1 est destiné à coopérer avec un organe de verrouillage femelle 3 ou boucle pour l'accrochage de la ceinture 1 qui s'étend depuis un enrouleur généralement porté par la caisse du véhicule. Referring to the single figure, the reference 1 designates an on-board seat belt associated with a seat (not shown) of a motor vehicle and of which only the part provided with the male locking member 2 in the form of a bolt is shown. The male locking member 2 constituting the lower anchoring point of the belt 1 is intended to cooperate with a female locking member 3 or loop for the attachment of the belt 1 which extends from a reel generally carried by the vehicle body.
Un actionneur pyrotechnique 4 schématisé sous forme d'un bloc est relié à l'organe de verrouillage femelle 3 et commandé de façon à prétensionner la ceinture de sécurité 1 en cas de choc. L'actionneur pyrotechnique est connu en soi et comporte d'une manière générale une cartouche pyrotechnique qui reçoit une impulsion électrique pour la faire détonner et actionner, par l'intermédiaire de moyens appropriés reliés à la boucle 3 et connus en soi, la prétension de la ceinture de sécurité 1. A pyrotechnic actuator 4 shown diagrammatically in the form of a block is connected to the female locking member 3 and controlled so as to pretension the seat belt 1 in the event of an impact. The pyrotechnic actuator is known per se and generally comprises a pyrotechnic cartridge which receives an electric pulse to detonate it and actuate, by means of appropriate means connected to the loop 3 and known per se, the pretension of the seat belt 1.
L'actionneur pyrotechnique 4 reçoit un signal de commande d'un calculateur 5 auquel sont reliés des moyens 6 de détection de décélération brutale du véhicule, notamment en cas de choc de celui-ci. The pyrotechnic actuator 4 receives a command signal from a computer 5 to which are connected means 6 for detecting sudden deceleration of the vehicle, in particular in the event of an impact thereof.
Selon l'invention, le calculateur est également relié à un capteur 7 de détection de verrouillage de la ceinture de sécurité 1 à la boucle 3. According to the invention, the computer is also connected to a sensor 7 for detecting the locking of the seat belt 1 to the loop 3.
De préférence, le capteur 7 est constitué par un microinterrupteur logé dans le boîtier de la boucle 3 et Preferably, the sensor 7 is constituted by a microswitch housed in the housing of the loop 3 and
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qui occupe une position fermée lorsque le pêne 2 de la ceinture 1 est verrouillé dans la boucle 3. which occupies a closed position when the bolt 2 of the belt 1 is locked in the buckle 3.
Lorsque la ceinture 1 n'est pas verrouillée à la boucle 3, le capteur 7 occupe une position ouverte empêchant le calculateur 5 de fournir un signal électrique à l'actionneur 4 pour l'inactiver et l'empêcher de prétensionner la ceinture 1 en cas de choc. When the belt 1 is not locked to the buckle 3, the sensor 7 occupies an open position preventing the computer 5 from supplying an electrical signal to the actuator 4 to deactivate it and preventing it from pretensioning the belt 1 in the event of of choc.
Ainsi, la cartouche pyrotechnique associée à la ceinture de sécurité est préservée en cas de choc lorsque le siège équipé de cette ceinture n'est pas occupé ou que la ceinture n'est pas bouclée. Thus, the pyrotechnic cartridge associated with the seat belt is preserved in the event of an impact when the seat fitted with this belt is not occupied or the belt is not fastened.
La préservation de cette manière de la cartouche pyrotechnique est extrêmement économique surtout dans le cadre d'un équipement complet d'actionneurs pyrotechniques associés respectivement aux sièges avant et arrière d'un véhicule automobile. The preservation in this way of the pyrotechnic cartridge is extremely economical especially in the context of a complete equipment of pyrotechnic actuators associated respectively with the front and rear seats of a motor vehicle.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0015818A FR2817520B1 (en) | 2000-12-06 | 2000-12-06 | DEVICE FOR PREVENTING THE TRIGGERING OF AN ACTUATOR WITH A PYROTECHNIC CARTRIDGE FOR PRETENSIONING A MOTOR VEHICLE SEAT BELT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0015818A FR2817520B1 (en) | 2000-12-06 | 2000-12-06 | DEVICE FOR PREVENTING THE TRIGGERING OF AN ACTUATOR WITH A PYROTECHNIC CARTRIDGE FOR PRETENSIONING A MOTOR VEHICLE SEAT BELT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2817520A1 true FR2817520A1 (en) | 2002-06-07 |
| FR2817520B1 FR2817520B1 (en) | 2003-04-18 |
Family
ID=8857301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0015818A Expired - Fee Related FR2817520B1 (en) | 2000-12-06 | 2000-12-06 | DEVICE FOR PREVENTING THE TRIGGERING OF AN ACTUATOR WITH A PYROTECHNIC CARTRIDGE FOR PRETENSIONING A MOTOR VEHICLE SEAT BELT |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2817520B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19624199C1 (en) * | 1996-06-18 | 1997-11-20 | Telefunken Microelectron | Method for connecting a state detection device of a passive safety system for motor vehicles to a control unit |
| DE19955559A1 (en) * | 1998-11-20 | 2000-06-15 | Trw Inc | Method and apparatus for controlling an actuatable restraint using crash severity indicator and a crumple zone sensor |
| DE19959946A1 (en) * | 1998-12-14 | 2000-07-20 | Trw Vehicle Safety Systems | Tensioner for motor vehicle seat belt has power switch to connect pre-tensioner with power source and responding to reception of receiver signal by power switch |
-
2000
- 2000-12-06 FR FR0015818A patent/FR2817520B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19624199C1 (en) * | 1996-06-18 | 1997-11-20 | Telefunken Microelectron | Method for connecting a state detection device of a passive safety system for motor vehicles to a control unit |
| DE19955559A1 (en) * | 1998-11-20 | 2000-06-15 | Trw Inc | Method and apparatus for controlling an actuatable restraint using crash severity indicator and a crumple zone sensor |
| DE19959946A1 (en) * | 1998-12-14 | 2000-07-20 | Trw Vehicle Safety Systems | Tensioner for motor vehicle seat belt has power switch to connect pre-tensioner with power source and responding to reception of receiver signal by power switch |
Non-Patent Citations (1)
| Title |
|---|
| "COMBINATION OF SENSING & FIRING CIRCUITS ON RESTRAINT COMPONENTS", RESEARCH DISCLOSURE, KENNETH MASON PUBLICATIONS, HAMPSHIRE, GB, no. 411, July 1998 (1998-07-01), pages 930 - 932, XP000824800, ISSN: 0374-4353 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2817520B1 (en) | 2003-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20100831 |