WO1993005399A1 - Capteur sensible a la chute, en particulier pour le declenchement de dispositifs de protection dans des vehicules a moteur - Google Patents

Capteur sensible a la chute, en particulier pour le declenchement de dispositifs de protection dans des vehicules a moteur Download PDF

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Publication number
WO1993005399A1
WO1993005399A1 PCT/DE1992/000686 DE9200686W WO9305399A1 WO 1993005399 A1 WO1993005399 A1 WO 1993005399A1 DE 9200686 W DE9200686 W DE 9200686W WO 9305399 A1 WO9305399 A1 WO 9305399A1
Authority
WO
WIPO (PCT)
Prior art keywords
packaging
sensor
sensor according
housing
motor vehicles
Prior art date
Application number
PCT/DE1992/000686
Other languages
German (de)
English (en)
Inventor
Harry Kaiser
Rainer Willig
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1993005399A1 publication Critical patent/WO1993005399A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/105—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by magnetically sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/023—Housings for acceleration measuring devices

Definitions

  • Fall-sensitive sensor in particular for triggering protective devices in motor vehicles
  • the invention is based on a sensor for automatically triggering occupant protection devices in motor vehicles according to the preamble of the main claim.
  • sensors are case sensitive, but they must be installed in the functional state in the motor vehicle to be monitored.
  • sensors are currently packaged in protective packaging, for example a folding box, in the manufacturer's factory and are thus delivered to the customer. There the sensor is removed from the packaging and attached to the motor vehicle. After the sensor has been removed from the packaging and until it is installed in the motor vehicle, it can fall onto the floor, so that damage can occur inside the housing of the sensor. This damage can impair the functionality of the sensor completely or partially, but cannot be seen from the outside of the sensor. After installation in the motor vehicle, the sensor can only be checked by pivoting it with the entire motor vehicle on a rocker. This type of check is very expensive and time-consuming.
  • the sensor according to the invention with the features of the main claim has the advantage that a high-quality sensor in a functional state can be installed in the motor vehicle at only a small additional cost for the packaging. No additional checking measures are necessary after installation. After the sensor has been checked for functionality in the final inspection by the manufacturer, no additional inspection by the end user before or after the sensor is installed in the motor vehicle is necessary. If the sensor falls on the floor, it is protected by the damping properties of the packaging. The measuring elements arranged in the housing of the sensor cannot suffer any damage as a result, so that the measuring accuracy is not impaired. This type of packaging of the sensor ensures that functional sensors are installed in the motor vehicle.
  • FIG. 1 shows a perspective illustration of a sensor arranged in a package
  • FIG. 2 shows a plan view
  • FIG. 3 shows a longitudinal section through a sensor. Description of the embodiment
  • 10 denotes the housing of a sensor 11 for triggering occupant protection devices, such as belt tensioners, airbags, hazard warning lights, or roll bars in motor vehicles, which is surrounded by a package 30 in a form-fitting manner.
  • occupant protection devices such as belt tensioners, airbags, hazard warning lights, or roll bars in motor vehicles, which is surrounded by a package 30 in a form-fitting manner.
  • the invention is also applicable to other fall sensitive sensors such as e.g. ABS (anti-lock braking system) and ASR (traction control system) can be used.
  • Any acceleration sensor which works according to various measuring principles and is obtainable in practice can be used as the sensor 11.
  • These sensors all have a seismic mass, the deflection of which triggers a measurement signal in a recording element.
  • the sensors described in DE-OS 40 33 885.1 or in DE-GM 89 09 177.9 can be used, the sensor according to DE-GM 89 09 177.9 being shown in FIGS. 3 and 4.
  • a web 14 extends from the base plate 12 at a right angle, to which a leaf spring 15 is attached, in particular by spot welding.
  • the leaf spring 15 is arranged upright parallel to the base plate 12 and has a lower edge which runs approximately parallel to the base plate 12 and an upper edge which runs obliquely downwards, so that an extension 16 is located at the free end of the leaf spring 15.
  • any other form of leaf spring is also conceivable. In the form of the leaf spring 15 shown here, rotation of the leaf spring 15 about its longitudinal axis is prevented.
  • a permanent magnet 18, 19 is fastened on each of the two broad sides of the extension 16 with the aid of an adhesive connection.
  • the magnetic polarity of the two permanent magnets 18, 19 is directed in the opposite direction and parallel to the surface of the leaf spring 15.
  • a Hall sensor 20 is fastened on the base plate 12 opposite the permanent magnets 18, 19. Furthermore, an eddy current disk is at the free end of the leaf spring 15
  • the eddy current disk 22 is arranged, which is approximately rectangular and extends horizontally lying across the leaf spring 15.
  • the eddy current disk 22 is immersed in a cage-shaped flow guide 23, which is preferably made of a soft magnetic material.
  • Two cuboid brake magnets 24 are arranged at a distance from one another in the flux guide piece 23, which extend to the eddy current disk 22 but do not touch it.
  • the packaging 30 surrounds the housing 10 of the sensor 11 in such a way that the sensor 11 does not suffer any damage if it falls onto the floor from a height of approximately 0.5 meters or approximately 1 meter. The respective amount depends on the demands of the customers.
  • the packaging 30 therefore consists of an elastic, foamed plastic which largely compensates for all forces acting on the sensor 11 in the event of an impact, so that these forces cannot act on the components of the sensor 11.
  • Foamed polyethylene is particularly suitable as the material for the packaging 30.
  • its shape is also important for the compensation of the acting forces.
  • the packaging 30 shown in FIG. 1 has a recess 31 in which the housing 10 of the sensor 11 is arranged such that the plug 32 of the sensor 11 protrudes from the recess 31.
  • a window 33 is formed in the area of the recess 31 in the packaging 30, so that the inscription 34 of the housing 10 of the sensor 11 is visible.
  • the housing 10 is glued into the recess 31 or with a press fit arranged.
  • the housing 10 can also be installed in a form-liquid manner in the packaging 30 during the spraying process of the packaging 30.
  • the packaging 30 has two extensions 36, which serve to protect the plug 32, so that the plug contacts 37 cannot be bent when they fall.
  • the extensions 36 are formed with such a large distance from the plug 32 that there is sufficient space for the mating contact of the plug 32, not shown.
  • the housing 10 has fastening tabs 40 with which the sensor 11 can be fastened to the motor vehicle.
  • the packaging 30 is made in one piece.
  • a two-part or multi-part design of the packaging would also be conceivable, with a two-part design of the packaging, the two parts can be assembled and possibly glued after inserting the housing 10 of the sensor 11.
  • the housing 10 of the sensor 11 is surrounded by a protective packaging 30 with which the sensor 10 is also attached to the motor vehicle.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Buffer Packaging (AREA)

Abstract

Le boîtier (10) d'un capteur (11) pour le déclenchement de dispositifs de protection des occupants de véhicules à moteur est monté par liaison de forme dans un emballage protecteur (30). L'emballage (30) est constitué par exemple de mousse de polyéthylène, de sorte qu'en cas de chute du capteur (11) sur le sol cet emballage (30) compense les forces produites. On peut ainsi intégrer des capteurs (11) aptes à fonctionner dans les véhicules chez les utilisateurs finals.
PCT/DE1992/000686 1991-09-07 1992-08-17 Capteur sensible a la chute, en particulier pour le declenchement de dispositifs de protection dans des vehicules a moteur WO1993005399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9111106U DE9111106U1 (de) 1991-09-07 1991-09-07 Sensor zum selbsttätigen Auslösen von Insassenschutzvorrichtungen in Kraftfahrzeugen
DEG9111106.4U 1991-09-07

Publications (1)

Publication Number Publication Date
WO1993005399A1 true WO1993005399A1 (fr) 1993-03-18

Family

ID=6871016

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000686 WO1993005399A1 (fr) 1991-09-07 1992-08-17 Capteur sensible a la chute, en particulier pour le declenchement de dispositifs de protection dans des vehicules a moteur

Country Status (2)

Country Link
DE (1) DE9111106U1 (fr)
WO (1) WO1993005399A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998009488A1 (fr) * 1996-08-29 1998-03-05 Robert Bosch Gmbh Boitier de commande electrique comprenant des elements sensibles a la chute, notamment un ou des capteurs de declenchement de dispositifs de protection a l'interieur de vehicules
DE10131611C1 (de) * 2001-06-29 2003-01-23 Siemens Ag Verfahren zum Gestalten der äußeren Form einer elektronischen Vorrichtung
DE102008042972A1 (de) * 2008-10-20 2010-04-22 Endress + Hauser Flowtec Ag Messgerät mit einem mehrwandigen Gehäuse
US9229021B2 (en) 2011-04-20 2016-01-05 Endress + Hauser Flowtec Ag Measuring device with a multi-walled housing
JPWO2016147393A1 (ja) * 2015-03-19 2017-12-28 能美防災株式会社 センサユニット

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4343135A1 (de) * 1993-12-17 1995-06-22 Bosch Gmbh Robert Drehratensensor
DE19633727C1 (de) 1996-08-21 1997-09-18 Siemens Ag Elektrisches Bauelement
DE19738803B4 (de) 1997-09-05 2018-05-24 Robert Bosch Gmbh Gehäuse für ein Gerät, insbesondere Sensor für Kraftfahrzeuge
DE102004024523B3 (de) * 2004-05-18 2005-11-24 Dr.Ing.H.C. F. Porsche Ag Transportschutz für Kabelenden an Federbeinen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561110A (en) * 1977-12-02 1980-02-13 Probe Eng Co Ltd Grain detection apparatus
GB2084330A (en) * 1980-09-22 1982-04-07 Sundstrand Data Control Protection of Accelerometers Against Impact
DE8909177U1 (de) * 1989-07-28 1990-11-29 Robert Bosch Gmbh, 70469 Stuttgart Beschleunigungssensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561110A (en) * 1977-12-02 1980-02-13 Probe Eng Co Ltd Grain detection apparatus
GB2084330A (en) * 1980-09-22 1982-04-07 Sundstrand Data Control Protection of Accelerometers Against Impact
DE8909177U1 (de) * 1989-07-28 1990-11-29 Robert Bosch Gmbh, 70469 Stuttgart Beschleunigungssensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998009488A1 (fr) * 1996-08-29 1998-03-05 Robert Bosch Gmbh Boitier de commande electrique comprenant des elements sensibles a la chute, notamment un ou des capteurs de declenchement de dispositifs de protection a l'interieur de vehicules
US6364144B1 (en) 1996-08-29 2002-04-02 Robert Bosch Gmbh Electric actuator casing comprising fall sensitive elements, especially one or more sensors intended for triggering protective device inside vehicles
DE10131611C1 (de) * 2001-06-29 2003-01-23 Siemens Ag Verfahren zum Gestalten der äußeren Form einer elektronischen Vorrichtung
DE102008042972A1 (de) * 2008-10-20 2010-04-22 Endress + Hauser Flowtec Ag Messgerät mit einem mehrwandigen Gehäuse
US9229021B2 (en) 2011-04-20 2016-01-05 Endress + Hauser Flowtec Ag Measuring device with a multi-walled housing
JPWO2016147393A1 (ja) * 2015-03-19 2017-12-28 能美防災株式会社 センサユニット

Also Published As

Publication number Publication date
DE9111106U1 (de) 1993-01-07

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