DE4131734A1 - Anti-collision device on rear of utility vehicle - is automatically lowered during collision, to prevent following car being crushed - Google Patents

Anti-collision device on rear of utility vehicle - is automatically lowered during collision, to prevent following car being crushed

Info

Publication number
DE4131734A1
DE4131734A1 DE19914131734 DE4131734A DE4131734A1 DE 4131734 A1 DE4131734 A1 DE 4131734A1 DE 19914131734 DE19914131734 DE 19914131734 DE 4131734 A DE4131734 A DE 4131734A DE 4131734 A1 DE4131734 A1 DE 4131734A1
Authority
DE
Germany
Prior art keywords
car
collision
utility vehicle
commercial vehicle
crushed
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.)
Withdrawn
Application number
DE19914131734
Other languages
German (de)
Inventor
Karl-Heinz Schimmelpfennig
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19914131734 priority Critical patent/DE4131734A1/en
Publication of DE4131734A1 publication Critical patent/DE4131734A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/56Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24Arrangements for mounting bumpers on vehicles
    • B60R19/38Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The device is mounted on the rear of a utility vehicle, to protect the passengers in a car during a collision, to prevent the car from driving under the lorry, etc. It is fastened,at least indirectly, to the lorry chassis. In normal operational conditions, it is located at a fixed height above the road surface. If a car collides with the rear of the lorry, the device is lowered automatically due to collision forces. These forces are reinforced by hydraulic, pneumatic, or pyrotechnic energy sources. USE/ADVANTAGE - For following car protection,with collision forces introduced at car bumper level,preventing the car crushing.

Description

Die erfindungsgemäße Vorrichtung geht von einem Nutz­ fahrzeug-Unterfahrschutz aus, wie er heutzutage zum Schutze eines auffahrenden Pkw am Hauptrahmen des Lkw oder des Anhängers angebracht wird.The device according to the invention is of benefit vehicle underrun protection from how it is used today Protect a colliding car on the main frame of the truck or the trailer is attached.

Gemäß der derzeitigen Gesetzgebung darf die Höhe der Unterkante des Unterfahrschutzes beim unbeladenen Fahrzeug eine Höhe 550 mm nicht überschreiten. Da sich die Stoßstangenoberkante eines vollgebremsten Pkw jedoch typischerweise in einer Höhe von etwa 400 mm befindet, kommt es bei den meisten Unfällen, bei denen ein Pkw auf ein Nutzfahrzeug auffährt, zu dem sog. "Untertauchen" des Unterfahrschutzes durch den Pkw. Die Kontaktkräfte werden dabei nicht in Höhe des Stoßfängers und damit in Höhe der stabilen Rah­ menlängsträger in den Pkw eingeleitet, sondern es deformieren sich im wesentlichen die weicheren Fahr­ zeugstrukturen in den höher gelegenen Teilen der Front des Pkw. Durch dieses Unterfahren wird der Vorbau des Pkw unnötig stark in Mitleidenschaft gezogen. Unter Umständen stellt die unnötig starke Deformation des Pkw-Vorbaus eine Gefährdung für dessen Insassen dar. Trotz dieses offensichtlichen Nachteils eines zu hoch angebrachten Unterfahrschut­ zes weigern sich die meisten Hersteller von Nutzfahr­ zeugen, den Unterfahrschutz niedriger als gesetzlich vorgeschrieben anzubringen.According to current legislation, the amount of Lower edge of the underride guard when the vehicle is unladen Do not exceed a height of 550 mm. There the top edge of the bumper of a fully braked Cars, however, typically at a height of around 400 mm, most accidents happen where a car hits a commercial vehicle, too the so-called "immersion" of the underrun protection the car. The contact forces are not high of the bumper and thus at the level of the stable frame side rails introduced into the car, but it essentially the softer driving deform witness structures in the higher parts of the Front of the car Stem of the car unnecessarily badly affected drawn. Under certain circumstances, the unnecessarily strong Deformation of the car stem is a hazard to its inmates. Despite this obvious Disadvantage of underrun protection installed too high Most manufacturers of commercial vehicles refuse to testify the underride protection lower than legal mandatory to attach.

Die Aufgabe der Erfindung besteht darin, trotz eines in der üblichen Höhe angebrachten Unterfahrschutzes die unnötig starke Deformation des Pkw-Vorbaus da­ durch zu verhindern, daß die Kontaktkräfte in Höhe des Stoßfängers des Pkw eingeleitet werden.The object of the invention is, despite one Underrun protection installed at the usual height the unnecessarily strong deformation of the car stem there  by preventing the contact forces in height of the bumper of the car.

Die Aufgabe wird dadurch gelöst, daß der Unterfahr­ schutz am Hauptrahmen des Nutzfahrzeugs beweglich angebracht ist und sich im Falle eines Auffahrunfalls selbsttätig auf die Höhe der Pkw-Stoßstange absenkt. Dabei kann das Absenken des Unterfahrschutzes entwe­ der durch die Kollisionskräfte selbst bewirkt werden oder aber unter Zuhilfenahme anderweitiger Energie­ quellen, beispielsweise auf hydraulischem, pneumati­ schem oder pyrotechnischem Wege, erfolgen.The task is solved in that the underride Protection on the main frame of the commercial vehicle is movable is attached and in the event of a rear-end collision automatically lowered to the height of the car bumper. The lowering of the underrun protection can escape which are caused by the collision forces themselves or with the help of other energy sources, for example on hydraulic, pneumatic chemical or pyrotechnic way.

Anhand der Zeichnung Fig. 1, in der ein Ausführungs­ beispiel der Erfindung gezeigt ist, sollen die Erfin­ dung sowie weitere vorteilhafte Ausgestaltungen und Weiterbildungen näher erläutert und beschrieben werden. An dem hinteren Teil des Hauptrahmens 3 des Fahrzeugs ist mittels mehrerer beidseitig drehbar gelagerter Verbindungsstäbe 2 die Prallplatte 1 ange­ bracht. Diese wird im Normalbetrieb durch eine Schraubenfeder 4 sowie unter Umständen durch eine zusätzliche Befestigung 5 in der Ruheposition 1′ gehalten. Fährt im Unfallereignis ein Pkw mit dem oberen Teil der Fahrzeugfront 8 auf die Prallplatte 1 auf, so wird die Halteeinrichtung 5 mechanisch zer­ stört und die Prallplatte 1 entgegen der Federvor­ spannung der Feder 4 in die abgesenkte Stellung 2′ gebracht, wo sie an den mechanischen Anschlag 8 anschlägt. In dieser Position befindet sich die Prallplatte in Höhe der Pkw-Stoßstange 7.The invention is shown with reference to the drawing, Fig. 1, in which an execution example, the intended OF INVENTION dung and further advantageous embodiments and further developments are explained and described. At the rear part of the main frame 3 of the vehicle, the baffle plate 1 is introduced by means of a plurality of connecting rods 2 rotatably mounted on both sides. This is held in normal operation by a coil spring 4 and possibly by an additional attachment 5 in the rest position 1 '. In the event of an accident, a car drives with the upper part of the vehicle front 8 onto the baffle plate 1 , the holding device 5 is mechanically disrupted and the baffle plate 1 against the spring tension of the spring 4 is brought into the lowered position 2 ', where it connects to the mechanical Stop 8 strikes. In this position, the baffle plate is level with the car bumper 7 .

Ein weiteres bevorzugtes Ausführungsbeispiel zeigen die Abbildungen Fig. 2 und Fig. 3. Bei dieser Aus­ führung besteht der eigentliche Unterfahrschutz aus einer Prallplatte 12, die mittels eines an ihr ange­ brachten Gestänges 13 in eine Führungseinrichtung 14 die am Hauptrahmen des Nutzfahrzeugs 8 befestigt ist, vertikal verschiebbar gelagert ist. In der Ruhestel­ lung wird die Prallplatte 12 mittels einer an dem Gestänge 13 eingehängten Druckfeder 15 unter Vor­ spannung gehalten, so daß sie sich stets am oberen Anschlag ihrer Position befindet. Dieser obere An­ schlag besteht in einem Keil 11, der an einer zweiten Prallplatte 10 befestigt ist. Diese zweite Prall­ platte ist zusammen mit dem Keil 11 in Fahrzeuglängs­ richtung des Nutzfahrzeugs verschiebbar. Während des normalen Fahrbetriebs wird die zweite Prallplatte 10 über die Feder 15, des Gestänge 13 sowie die schräge Ebene, gebildet aus Oberkante der Prallplatte 12 und dem Keil 11, in ihre Ruhestellung gegen den An­ schlag 16 gedrückt. Im Unfallereignis gelangt zu­ nächst der Oberteil des Vorbaus des Pkw 6 mit der Prallplatte 10 in Berührung, so daß diese in Richtung der Fahrzeugfront des Nutzfahrzeugs verschoben wird. Durch die schräge Ebene gebildet durch den Keil 11 wird die Prallplatte 12 gegen die Vorspannung der Feder 15 aus der Ruheposition 3′ in die Kollisions­ position 4′ bewegt, wo sie sich in Höhe der Stoß­ stange des Pkw 7 befindet.A further preferred embodiment shown in the figures Fig. 2 and Fig. 3. In this from the guide consists of the actual underrun protection from a baffle plate 12 which by means of an attached thereto linkage 13 in a guide device 14 fixed to the main frame of the utility vehicle 8, is vertically slidably mounted. In the rest position, the baffle plate 12 is held under tension by means of a compression spring 15 suspended on the linkage 13 , so that it is always at the upper stop of its position. This upper impact consists in a wedge 11 which is attached to a second baffle plate 10 . This second baffle plate can be moved together with the wedge 11 in the vehicle longitudinal direction of the commercial vehicle. During normal driving, the second baffle plate 10 is pressed via the spring 15 , the linkage 13 and the inclined plane, formed from the upper edge of the baffle plate 12 and the wedge 11 , in their rest position against the impact 16 . In the event of an accident, the upper part of the front end of the car 6 comes into contact with the baffle plate 10 , so that it is moved in the direction of the front of the commercial vehicle. Through the inclined plane formed by the wedge 11 , the baffle plate 12 is moved against the bias of the spring 15 from the rest position 3 'in the collision position 4 ', where it is at the level of the bumper of the car 7 .

Claims (3)

1. Vorrichtung zum Schutz eines Pkw-Insassen bei der Kollision mit einem Nutzfahrzeug, die - zumindest indirekt - am Hauptrahmen des Nutz­ fahrzeugs befestigt ist und sich im normalen Be­ triebszustand in einer festen Höhe über der Fahr­ bahnoberfläche befindet, dadurch gekennzeichnet, daß sie sich bei einem Unfall mit einem Pkw auto­ matisch selbsttätig absenkt.1. A device for protecting a car occupant in the collision with a commercial vehicle, which - at least indirectly - is attached to the main frame of the commercial vehicle and is in normal operating condition at a fixed height above the road surface, characterized in that it is automatically lowers automatically in an accident with a car. 2. Nutzfahrzeug-Unterfahrschutz nach Anspruch 1, dadurch gekennzeichnet, daß die Absenkung im Unfallereignis durch die Kollisionskräfte bewirkt wird.2. Commercial vehicle underrun protection according to claim 1, characterized in that the lowering in Accident caused by the collision forces becomes. 3. Nutzfahrzeug-Unterfahrschutz gemäß An­ spruch 1, dadurch gekennzeichnet, daß die selbsttätig Absenkung während des Unfallereig­ nisses unter Zuhilfenahme anderer Energiequellen, beispielsweise hydraulischer, pneumatischer oder pyrotechnischer Art, bewirkt wird.3. Commercial vehicle underrun protection according to An saying 1, characterized in that the automatic lowering during the accident with the help of other energy sources, for example hydraulic, pneumatic or pyrotechnic type.
DE19914131734 1991-09-24 1991-09-24 Anti-collision device on rear of utility vehicle - is automatically lowered during collision, to prevent following car being crushed Withdrawn DE4131734A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914131734 DE4131734A1 (en) 1991-09-24 1991-09-24 Anti-collision device on rear of utility vehicle - is automatically lowered during collision, to prevent following car being crushed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914131734 DE4131734A1 (en) 1991-09-24 1991-09-24 Anti-collision device on rear of utility vehicle - is automatically lowered during collision, to prevent following car being crushed

Publications (1)

Publication Number Publication Date
DE4131734A1 true DE4131734A1 (en) 1993-04-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914131734 Withdrawn DE4131734A1 (en) 1991-09-24 1991-09-24 Anti-collision device on rear of utility vehicle - is automatically lowered during collision, to prevent following car being crushed

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DE (1) DE4131734A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700661A1 (en) * 1996-01-20 1997-07-24 Daimler Benz Ag Under-carriage guard for commercial vehicle
FR2758779A1 (en) * 1997-01-27 1998-07-31 Lin Pac Mouldings ASSEMBLY FORMING BUMPER FOR VEHICLE
DE19928104A1 (en) * 1999-06-19 2000-12-28 Daimler Chrysler Ag Commercial vehicle drop-down drive-under protection device has lever arms and guide mechanism for movement of rear bumper bar between raised and lowered positions
GB2388341A (en) * 2002-05-07 2003-11-12 Autoliv Dev Auxiliary front bumper lowerable on collision sensing
US6764118B2 (en) 2002-09-11 2004-07-20 Autoliv Asp, Inc. Active bumper assembly
US6834899B2 (en) 2003-03-24 2004-12-28 Autoliv Asp, Inc. Bumper assembly that provides early crash detection
US6942261B2 (en) 2003-08-14 2005-09-13 Autoliv Asp, Inc. Linear actuator with an internal dampening mechanism
US7182191B2 (en) 2002-07-11 2007-02-27 Autoliv Asp, Inc. Motion damper
DE102006056498A1 (en) * 2006-08-05 2008-02-07 Infatec Gmbh Commercial motor vehicle`s e.g. lorry, rear under-run protection device, has percussion unit movable from output or normal position to end or crash position, where percussion unit is guided such that it lies in end or crash position
WO2010115926A3 (en) * 2009-04-08 2011-07-07 Rwe Ag Charging post for electric vehicles
US8931606B2 (en) 2005-02-25 2015-01-13 The Aerospace Corporation Force diversion apparatus and methods
US9194452B2 (en) 2012-10-31 2015-11-24 The Aerospace Corporation High stiffness vibration damping apparatus, methods and systems
US9220310B2 (en) * 2005-02-25 2015-12-29 The Aerospace Corporation Force diversion apparatus and methods and devices including the same
CN108312994A (en) * 2018-02-02 2018-07-24 陈嘉臻 Large freight vehicle tail portion anti-percussion device

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700661C2 (en) * 1996-01-20 1998-11-12 Daimler Benz Ag Underride protection for a commercial vehicle
DE19700661A1 (en) * 1996-01-20 1997-07-24 Daimler Benz Ag Under-carriage guard for commercial vehicle
FR2758779A1 (en) * 1997-01-27 1998-07-31 Lin Pac Mouldings ASSEMBLY FORMING BUMPER FOR VEHICLE
DE19928104B4 (en) * 1999-06-19 2004-04-15 Daimlerchrysler Ag Folding rear underrun protection
DE19928104A1 (en) * 1999-06-19 2000-12-28 Daimler Chrysler Ag Commercial vehicle drop-down drive-under protection device has lever arms and guide mechanism for movement of rear bumper bar between raised and lowered positions
GB2388341B (en) * 2002-05-07 2005-08-24 Autoliv Dev Improvements in or relating to a safety device
GB2388341A (en) * 2002-05-07 2003-11-12 Autoliv Dev Auxiliary front bumper lowerable on collision sensing
US7182191B2 (en) 2002-07-11 2007-02-27 Autoliv Asp, Inc. Motion damper
US6764118B2 (en) 2002-09-11 2004-07-20 Autoliv Asp, Inc. Active bumper assembly
US6834899B2 (en) 2003-03-24 2004-12-28 Autoliv Asp, Inc. Bumper assembly that provides early crash detection
US6942261B2 (en) 2003-08-14 2005-09-13 Autoliv Asp, Inc. Linear actuator with an internal dampening mechanism
US9220310B2 (en) * 2005-02-25 2015-12-29 The Aerospace Corporation Force diversion apparatus and methods and devices including the same
US8931606B2 (en) 2005-02-25 2015-01-13 The Aerospace Corporation Force diversion apparatus and methods
DE102006056498A1 (en) * 2006-08-05 2008-02-07 Infatec Gmbh Commercial motor vehicle`s e.g. lorry, rear under-run protection device, has percussion unit movable from output or normal position to end or crash position, where percussion unit is guided such that it lies in end or crash position
DE102006056498B4 (en) * 2006-08-05 2016-03-17 INFATEC Consulting für innovative Fahrzeugtechnik GmbH Rear underride guard
WO2010115926A3 (en) * 2009-04-08 2011-07-07 Rwe Ag Charging post for electric vehicles
TWI413334B (en) * 2009-04-08 2013-10-21 Rwe Ag Charging pillar for electric vehicles
US9194452B2 (en) 2012-10-31 2015-11-24 The Aerospace Corporation High stiffness vibration damping apparatus, methods and systems
CN108312994A (en) * 2018-02-02 2018-07-24 陈嘉臻 Large freight vehicle tail portion anti-percussion device

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