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DE19831750C1 - Automobile passenger seat with crash damage detection - Google Patents

Automobile passenger seat with crash damage detection

Info

Publication number
DE19831750C1
DE19831750C1 DE19831750A DE19831750A DE19831750C1 DE 19831750 C1 DE19831750 C1 DE 19831750C1 DE 19831750 A DE19831750 A DE 19831750A DE 19831750 A DE19831750 A DE 19831750A DE 19831750 C1 DE19831750 C1 DE 19831750C1
Authority
DE
Germany
Prior art keywords
motor vehicle
vehicle seat
seat
passenger seat
damage detection
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
Application number
DE19831750A
Other languages
German (de)
Inventor
Thomas Moennich
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.)
Faurecia Autositze GmbH
Original Assignee
Bertrand Faure Sitztechnik GmbH and Co KG
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 Bertrand Faure Sitztechnik GmbH and Co KG filed Critical Bertrand Faure Sitztechnik GmbH and Co KG
Priority to DE19831750A priority Critical patent/DE19831750C1/en
Application granted granted Critical
Publication of DE19831750C1 publication Critical patent/DE19831750C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/0078—Shock-testing of vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Seats For Vehicles (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The automobile passenger seat has metal fixings (3a) for securing the seat to the automobile body, metal seat adjustment couplings (3b) and metal support components (1a,2a) for the seat squab and backrest, provided with attached expansion measuring strips (4) for measuring deformations resulting from crash damage.

Description

Die Erfindung betrifft einen Kraftfahrzeugsitz nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a motor vehicle seat according to the Preamble of claim 1.

Die Weiterverwendung eines Kraftfahrzeugsitzes nach einem Unfall ist nach den geltenden Vorschriften zulässig, wenn alle mechanischen Funktionen ohne merkliche Veränderungen ausgeführt werden können. Eine derartige Prüfung ist unzu­ verlässig, weil es möglich ist, daß die Beschlagteile ihre einwandfreien Bewegungsfunktionen auch noch nach einem Crash aufweisen, obwohl sie überdehnt, gerissen oder ander­ weitig beschädigt sind. In diesen Fällen wird der Kraft­ fahrzeugsitz zu einem Sicherheitsrisiko für den Benutzer.The reuse of a motor vehicle seat after a Accident is allowed under the applicable regulations if all mechanical functions without noticeable changes can be executed. Such a test is not necessary reliable, because it is possible that the hardware components their flawless movement functions even after one Crash, though overstretched, torn or otherwise are largely damaged. In these cases, the force vehicle seat poses a safety risk to the user.

Der Erfindung liegt die Aufgabe zugrunde, einen Kraftfahr­ zeugsitz so weiterzubilden, daß nach einem Crash zuverläs­ sige Angaben über den Zustand des Sitzes unabhängig vom Be­ wegungsablauf seiner Funktionsteile gespeichert sind. The invention has for its object a motor vehicle further develop the seat so that after a crash Information about the condition of the seat regardless of the occupant movement of its functional parts are stored.  

Die Lösung dieser Aufgabe erfolgt mit den Merkmalen des Pa­ tentanspruchs 1.This problem is solved with the characteristics of Pa claim 1.

Die bleibende Dehnung einer tragenden Struktur oder der Be­ schläge eines Kraftfahrzeugsitzes führt zu Veränderungen der elektrischen Kennwerte des Dehnungsmeßstreifens, die auch nach dem Crash gemessen werden können. Der Dehnungs­ meßstreifen gibt ebenfalls ein verändertes Signal ab, wenn er in Folge der Beschädigung des Bauteils, an dem er befe­ stigt ist, überdehnt wurde und nicht aufgrund seiner Ela­ stizität in seine Ausgangslage zurückkehren kann. Auch in diesem Fall wird eine Widerstandsänderung meßbar, selbst dann, wenn das gemessene Bauteil seine ursprüngliche Form wieder annimmt. Es ist also auch dann feststellbar, ob das gemessene Teil noch funktionsfähig ist, wenn es beispiels­ weise einen äußerlich nicht feststellbaren Riß aufweist.The permanent stretch of a supporting structure or the loading Impacts of a motor vehicle seat leads to changes the electrical characteristics of the strain gauge, the can also be measured after the crash. The stretch measuring strip also emits a changed signal if it due to damage to the component on which it is attached is overstretched and not because of his ela can return to its original position. Also in in this case a change in resistance becomes measurable, even then when the measured component is in its original shape again accepts. So it can also be determined whether that measured part is still functional if it is for example shows an externally undetectable crack.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous refinements of the invention result from the subclaims.

Eine bevorzugte Ausführungsform der Erfindung wird nachste­ hend anhand der schematischen Seitenansicht eines Kraft­ fahrzeugsitzes näher beschrieben.A preferred embodiment of the invention will be next Based on the schematic side view of a force vehicle seat described in more detail.

Ein Kraftfahrzeugsitz weist einen Sitzteil 1 und eine Rüc­ kenlehne 2 auf. Von dem Kraftfahrzeugsitz sind die tragende Struktur 2a der Rückenlehne 2 und die tragende Struktur 1a des Sitzteils 1 dargestellt, die über einen Verstellbe­ schlag 3b miteinander verbunden sind. Der Kraftfahrzeugsitz ist höhenverstellbar über Verbindungsbeschläge 3a mit dem nicht dargestellten Chassis eines Kraftfahrzeugs verbunden. An dem Verstellbeschlag 3b, den beiden Lenkern des Verbin­ dungsbeschlages 3a und der Sitzstruktur 1a des Sitzteils 1 ist je ein Dehnungsmeßstreifen 4 angebracht.A motor vehicle seat has a seat part 1 and a backrest 2 . From the motor vehicle seat, the load-bearing structure 2 a of the backrest 2 and the load-bearing structure 1 a of the seat part 1 are shown, which are connected to each other via an adjustment 3 b. The height of the motor vehicle seat is connected to the chassis (not shown) of a motor vehicle via connecting fittings 3 a. On the adjustment fitting 3 b, the two links of the connec tion fitting 3 a and the seat structure 1 a of the seat part 1 , a strain gauge 4 is attached.

Die Dehnungsmeßstreifen 4 sind mittels elektrischer Leitun­ gen 5 mit einer Stecker-/Kupplungseinheit 6 verbunden, mit der die Dehnungsmeßstreifen 4 an eine externe Auswerteein­ heit anschließbar sind. Die Dehnungsmeßstreifen 4 sind an Bereichen der Beschläge 3a und 3b bzw. der tragenden Struk­ turen 1a und 2a befestigt, die bei einem Crash den größten mechanischen Spannungen ausgesetzt sind und die größten Dehnungen erfahren.The strain gauges 4 are connected by means of electrical lines 5 to a plug / coupling unit 6 , with which the strain gauges 4 can be connected to an external evaluation unit. The strain gauges 4 are attached to areas of the fittings 3 a and 3 b and the supporting structures 1 a and 2 a, which are exposed to the greatest mechanical stresses in a crash and experience the greatest strains.

Claims (4)

1. Kraftfahrzeugsitz mit Verbindungsbeschlägen (3a) zum Chassis eines Kraftfahrzeugs sowie mit tragenden Struk­ turen (1a; 2a) und Verstellbeschlägen (3b) am Kraftfahr­ zeugsitz jeweils aus Metall, dadurch gekennzeichnet, daß an den Beschlägen (3a; 3b) und/oder tragenden Struk­ turen (1a; 2a) mindestens ein Dehnungsmeßstreifen (4) zum Messen bleibender Verformungen angeordnet ist.1. Motor vehicle seat with connection fittings (3 a) to the chassis of a motor vehicle, and with load-bearing structural temperatures (1 a, 2 a) and Verstellbeschlägen (3 b) on the motor driving generating seated respectively made of metal, characterized in that the fittings (3 a, 3 b) and / or load-bearing structures ( 1 a; 2 a) at least one strain gauge ( 4 ) is arranged for measuring permanent deformations. 2. Kraftfahrzeugsitz nach Anspruch 1, dadurch gekennzeichnet, daß Dehnungsmeßstreifen (4) an den am stärksten verfor­ mungsgefährdeten Bereichen des Kraftfahrzeugsitzes ange­ ordnet sind.2. Motor vehicle seat according to claim 1, characterized in that strain gauges ( 4 ) are arranged at the most deformable areas of the motor vehicle seat. 3. Kraftfahrzeugsitz nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Leitungen (5) der verschiedenen Dehnungsmeß­ streifen (4) in eine gemeinsame Stecker- oder Kupplungs­ einheit (6) geführt sind. 3. Motor vehicle seat according to claim 1 or 2, characterized in that the lines ( 5 ) of the various strain gauges ( 4 ) are guided in a common plug or coupling unit ( 6 ). 4. Kraftfahrzeugsitz nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Stecker- oder Kupplungseinheit (6) an eine ex­ terne Auswerteeinheit anschließbar ist.4. Motor vehicle seat according to one or more of claims 1 to 3, characterized in that the plug or coupling unit ( 6 ) can be connected to an ex-internal evaluation unit.
DE19831750A 1998-07-15 1998-07-15 Automobile passenger seat with crash damage detection Expired - Fee Related DE19831750C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19831750A DE19831750C1 (en) 1998-07-15 1998-07-15 Automobile passenger seat with crash damage detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19831750A DE19831750C1 (en) 1998-07-15 1998-07-15 Automobile passenger seat with crash damage detection

Publications (1)

Publication Number Publication Date
DE19831750C1 true DE19831750C1 (en) 1999-11-18

Family

ID=7874133

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19831750A Expired - Fee Related DE19831750C1 (en) 1998-07-15 1998-07-15 Automobile passenger seat with crash damage detection

Country Status (1)

Country Link
DE (1) DE19831750C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7048085B2 (en) 2000-09-29 2006-05-23 Siemens Vdo Automotive Corporation Weight classification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7048085B2 (en) 2000-09-29 2006-05-23 Siemens Vdo Automotive Corporation Weight classification system
US7503417B2 (en) 2000-09-29 2009-03-17 Continental Automotive Systems Us, Inc. Sensor assembly for seat occupant weight classification system

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Legal Events

Date Code Title Description
8100 Publication of patent without earlier publication of application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: FAURECIA AUTOSITZE GMBH & CO. KG, 31655 STADTHAGEN

8327 Change in the person/name/address of the patent owner

Owner name: FAURECIA AUTOSITZE GMBH, 31655 STADTHAGEN, DE

8339 Ceased/non-payment of the annual fee