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EP1172507A2 - Locking device, in particular for motor vehicle bonnets - Google Patents

Locking device, in particular for motor vehicle bonnets Download PDF

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Publication number
EP1172507A2
EP1172507A2 EP01250241A EP01250241A EP1172507A2 EP 1172507 A2 EP1172507 A2 EP 1172507A2 EP 01250241 A EP01250241 A EP 01250241A EP 01250241 A EP01250241 A EP 01250241A EP 1172507 A2 EP1172507 A2 EP 1172507A2
Authority
EP
European Patent Office
Prior art keywords
crash
stop
rotary latch
lock arrangement
arrangement according
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
Application number
EP01250241A
Other languages
German (de)
French (fr)
Other versions
EP1172507B1 (en
EP1172507A3 (en
Inventor
Dieter Meyer
Klaus Meissner
Eberhard Gohlke
Bernd Siemsen
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1172507A2 publication Critical patent/EP1172507A2/en
Publication of EP1172507A3 publication Critical patent/EP1172507A3/en
Application granted granted Critical
Publication of EP1172507B1 publication Critical patent/EP1172507B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/08—Arrangements for protection of pedestrians
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
    • E05B83/24—Locks for luggage compartments, car boot lids or car bonnets for car bonnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B51/00—Operating or controlling locks or other fastening devices by other non-mechanical means
    • E05B51/02—Operating or controlling locks or other fastening devices by other non-mechanical means by pneumatic or hydraulic means
    • E05B51/023—Operating or controlling locks or other fastening devices by other non-mechanical means by pneumatic or hydraulic means actuated in response to external pressure, blast or explosion
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/20—Bolts or detents
    • E05B85/24—Bolts rotating about an axis
    • E05B85/26—Cooperation between bolts and detents

Definitions

  • the invention relates to a lock arrangement according to the preamble of Claim 1.
  • the invention is based on a different object. If you look at that preferred application of the invention, namely as a lock arrangement for a motor vehicle front hood, so one is interested in the impact of a pedestrian on the Front hood designed to act as a deformation element. There are, therefore, related ones Proposals to make the actual bonnet locally compliant, so that especially in the usual impact area of a pedestrian's head on the hood a deformation of the hood associated with energy conversion and thus a certain one Relief of the pedestrian head against high delays take place.
  • the critical point is that usually provided at the front end of the front hood Lock. It must be designed so that during normal operation of the vehicle Occurring closing forces of the hood of the striker not as far into the The actual lock containing the catch can penetrate because of the danger of Damage to the hood would be associated with the normal closing of the same. Therefore, the construction of the lock arrangement must be designed so that, largely regardless of the amount of closing force exerted on the hood, the rotary latch is pivoted into a defined locking position, but not beyond this. With others Words: one for the specified preferred and other similar applications suitable lock arrangement is relatively hard in the locked state of the hood, so that it is obviously unsuitable for the goal of pedestrian protection.
  • the invention has for its object to a generic lock assembly create, on the one hand in terms of operational requirements - defined rest position the catch - is optimized, but on the other hand also the requirements regarding the Pedestrian safety is enough.
  • the protrudes Stop for example, in the swivel path of the rotary latch or one rigid with it connected component of the lock assembly, so that the catch is not above its Rest position can be pivoted, the maximum closing forces that experience has shown that it can be exercised on the hood, on which the design is based.
  • a linearly guided mass-related stop may be provided, which by means of a compression spring during the normal operation of the vehicle is secured in the swivel path of the rotary latch while the Inertial forces counter the action of the spring in the event of a crash Move the swivel path of the rotary latch.
  • a blasting device that him in Crash trap removed as it were.
  • such explosive devices can be found in the frame use of safety steering columns, whereby detonations between the explosions then telescopic steering column components are eliminated.
  • the stop 6 which is in the way of the lower edge of the Rotary latch 2 when swiveling the same beyond its locking position (FIG. 2), that is down, lies.
  • the lock arrangement as in the length of the gap 4 in Housing recognizable for a further movement of the striker 1 relative to Lock housing designed in the downward direction, namely by a so-called Crash stroke 7, but in the operating modes of Figures 1 and 2, the stop 6 prevents one such movement so that - except for a narrow gap between parts 2 and 6 - when the catch 2 is in the locked position, this involves a further pivoting movement is hindered clockwise by the stop 6. This is the above Condition met that regardless of the amount of exercise applied to the hood Closing force must always be the same locking position of the rotary latch 2.
  • the stop 6 is now as by his partial representation indicated by broken lines, in Figure 3 to the rear this further swivel path of the catch 2 is pulled out, shifted or pyrotechnically blown away, so that he the movement of the catch 2 with the striker 1 from the Position according to Figure 2 (locking position of the rotary latch) corresponding to the crash stroke 7 in the relative position of the different parts according to Figure 3 can not hinder.
  • the Crashhub 7 can either only be used to achieve compliance or as a deformation path be exploited, during the transfer of kinetic energy in deformation work on any components of the castle or Vehicle takes place, as this is a sign of a deformation path.
  • the invention achieves the defined task with simple means created two contradictory requirements, namely stiffness and Compliance, depending on the operating conditions - normal operation, Crash operation - to be fulfilled.

Landscapes

  • Superstructure Of Vehicle (AREA)
  • Lock And Its Accessories (AREA)

Abstract

Einer Drehfalle (2) einer Schlossanordnung für eine Kraftfahrzeug-Fronthaube ist ein Anschlag (6) zugeordnet, der im Normalbetrieb Schwenkbewegungen der Drehfalle (2) über ihre Raststellung (in der sie einen Schließbügel (1) arretiert) hinaus bei allen auftretenden Schließkräften verhindert: Dem Anschlag (6) sind jedoch Mittel zugeordnet, die bei einem Fußgängeraufprall eine Verlagerung des Anschlags (6) in eine Position verursachen oder zulassen, in der er die Drehfalle (2) zu diesen Schwenkbewegungen unter dem Einfluss crashbedingter Kräfte freigibt. Dadurch wird ein zusätzlicher Deformationsweg gewonnen. <IMAGE>A rotary latch (2) of a lock arrangement for a motor vehicle front hood is assigned a stop (6) which, during normal operation, prevents the rotary latch (2) from swiveling beyond its latching position (in which it locks a striker (1)) with all closing forces that occur: However, the stop (6) is assigned means which, in the event of a pedestrian impact, cause or allow the stop (6) to be shifted into a position in which it releases the catch (2) for these pivoting movements under the influence of crash-induced forces. This creates an additional deformation path. <IMAGE>

Description

Die Erfindung betrifft eine Schlossanordnung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a lock arrangement according to the preamble of Claim 1.

Gattungsgemäße Schlossanordnungen, also solche, die im Crashfall eine Lageänderung der Drehfalle zulassen, sind zur Lösung einer anderen Aufgabe beispielsweise aus der US-PS 3,667,791 bekannt. Dort hat die Drehfalle ein nachgiebiges Schwenklager, und dies führt dazu, dass bei hohen Türöffnungskräften, die jedoch nicht zum Öffnen der Tür führen sollen, ein Spalt zwischen der Drehfalle und einem umgebenden Gehäuseteil verschwindet, sich demgemäß die Drehfalle großflächig am Gehäuse abstützt. Auch in der Konstruktion nach der DE 196 31 262 A1 ist durch entsprechende Ausbildung der Drehfallenlagerung bei Aufreißkräften der Tür, wie sie im Crashfalle auftreten, eine Verlagerung der Drehfalle sichergestellt, so dass die Aufreißkräfte dann über einen Anlagebereich einer die Drehfalle umfassenden Ausnehmung abgefangen werden. Die Schließsysteme nach den DE 195 11 651 A1, DE 196 24 640 C1 und DE 198 25 708 A1, die ebenfalls ein Öffnen der Tür beim Crash ausschließen sollen, nutzen mittels Trägermassen erzeugte Trägheitskräfte aus, um im Crashfalle eine Blockierung der Drehfalle durch dann wirksam werdende Anschläge sicherzustellen. Die letztgenannte Schrift weist in ihrer Konstruktion die Besonderheit auf, dass der Anschlag ein in Richtung seiner Achse durch Trägheitskräfte entgegen der Wirkung einer Druckfeder verschiebbares Arretierglied bildet, das durch die Feder im normalen Betriebsfall des Fahrzeugs außer Eingriff mit einem Gegenanschlag gehalten ist, dagegen durch crashbedingte Trägheitskräfte entgegen der Wirkung der Feder in eine Wirkposition gebracht wird.Generic lock arrangements, that is, those that change position in the event of a crash Allowing a catch are to solve another task, for example from the US PS 3,667,791 known. There the catch has a flexible swivel bearing, and this leads to the fact that with high door opening forces, which should not, however, lead to the door opening, a gap between the rotary latch and a surrounding housing part disappears accordingly, the catch is supported over a large area on the housing. Also in the construction after DE 196 31 262 A1 is by appropriate training of the rotary latch mounting Tear forces of the door, such as occur in a crash case, a displacement of the rotary latch ensured that the tearing forces then over a contact area of the catch comprehensive recess can be intercepted. The locking systems according to the DE 195 11 651 A1, DE 196 24 640 C1 and DE 198 25 708 A1, which also open the To exclude the door in the event of a crash, use inertial forces generated by means of carrier masses to prevent the rotary latch from being blocked in the event of a crash Ensure attacks. The latter font shows in its construction Special feature on that the stop one in the direction of its axis due to inertial forces against the action of a compression spring displaceable locking member that by the Spring in normal vehicle operation out of engagement with a counterstop is held, however, by crash-induced inertial forces against the action of the spring is brought into an active position.

Gemeinsam ist dem beschriebenen Stand der Technik also, dass Maßnahmen getroffen sind, die im Crashfalle eine Lageänderung der Drehfalle relativ zur ihrer Raststellung zulassen beziehungsweise verhindern.What is common to the described prior art is that measures have been taken are in the event of a crash a change in position of the rotary latch relative to its locking position allow or prevent.

Während der beschriebene Stand der Technik sich demgemäß mit dem Verhindern des unerwünschten Öffnens einer Tür oder dergleichen, die mit der Schlossanordnung bestückt ist, befasst, liegt der Erfindung eine andersartige Aufgabe zugrunde. Betrachtet man den bevorzugten Einsatzfall der Erfindung, nämlich als Schlossanordnung für eine Kraftfahrzeug-Fronthaube, so ist man daran interessiert, beim Aufprall eines Fußgängers auf die Fronthaube diese als Deformationsglied wirkend auszulegen. Es gibt daher dahingehende Vorschläge, die eigentliche Fronthaube örtlich nachgiebig zu gestalten, so dass insbesondere im üblichen Aufschlagbereich des Kopfes eines Fußgängers auf die Haube eine mit Energieumsetzung verbundene Verformung der Haube und damit eine gewisse Entlastung des Kopfes des Fußgängers gegen hohe Verzögerungen stattfinden. Eine bezüglich dieser Entlastung des Körpers des Fußgängers von hohen Verzögerungskräften kritische Stelle ist das üblicherweise am vorderen Ende der Fronthaube vorgesehene Schloss. Es muss so ausgelegt sein, dass bei den im normalen Betrieb des Fahrzeugs auftretenden Schließkräften der Haube der Schließbügel nicht beliebig weit in das die Drehfalle enthaltende eigentliche Schloss eindringen kann, da damit die Gefahr der Beschädigung der Haube schon beim normalen Schließen derselben verbunden wäre. Daher muss die Konstruktion der Schlossanordnung so ausgelegt sein, dass, weitgehend unabhängig von der Höhe der jeweils auf die Haube ausgeübten Schließkraft, die Drehfalle in eine definierte Raststellung geschwenkt wird, nicht aber über diese hinaus. Mit anderen Worten: eine für den angegebenen bevorzugten und andere ähnlich gelagerte Einsatzfälle geeignete Schlossanordnung ist im verrasteten Zustand der Haube relativ hart, so dass sie für das Ziel des Fußgängerschutzes offensichtlich gerade ungeeignet ist.Accordingly, while the prior art described is concerned with preventing the undesired opening of a door or the like, which is equipped with the lock arrangement is concerned, the invention is based on a different object. If you look at that preferred application of the invention, namely as a lock arrangement for a motor vehicle front hood, so one is interested in the impact of a pedestrian on the Front hood designed to act as a deformation element. There are, therefore, related ones Proposals to make the actual bonnet locally compliant, so that especially in the usual impact area of a pedestrian's head on the hood a deformation of the hood associated with energy conversion and thus a certain one Relief of the pedestrian head against high delays take place. A with regard to this relief of the pedestrian body from high deceleration forces the critical point is that usually provided at the front end of the front hood Lock. It must be designed so that during normal operation of the vehicle Occurring closing forces of the hood of the striker not as far into the The actual lock containing the catch can penetrate because of the danger of Damage to the hood would be associated with the normal closing of the same. Therefore, the construction of the lock arrangement must be designed so that, largely regardless of the amount of closing force exerted on the hood, the rotary latch is pivoted into a defined locking position, but not beyond this. With others Words: one for the specified preferred and other similar applications suitable lock arrangement is relatively hard in the locked state of the hood, so that it is obviously unsuitable for the goal of pedestrian protection.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Schlossanordnung zu schaffen, die einerseits in Hinblick auf die Betriebsanforderungen - definierte Raststellung der Drehfalle - optimiert ist, andererseits aber auch den Anforderungen hinsichtlich der Fußgängersicherheit genügt.The invention has for its object to a generic lock assembly create, on the one hand in terms of operational requirements - defined rest position the catch - is optimized, but on the other hand also the requirements regarding the Pedestrian safety is enough.

Die erfindungsgemäße Lösung dieser Aufgabe besteht in den kennzeichnenden Merkmalen des Hauptanspruchs, vorteilhafte Ausbildungen der Erfindung beschreiben die Unteransprüche.The achievement of this task consists in the characteristic features of the main claim, advantageous embodiments of the invention describe the Dependent claims.

Während des normalen Betriebs des Fahrzeugs, das heißt in crashfreien Zeiten, ragt der Anschlag beispielsweise in den Schwenkweg der Drehfalle oder eines mit dieser starr verbundenen Bauteils der Schlossanordnung, so dass die Drehfalle nicht über ihrer Raststellung hinaus verschwenkt werden kann, wobei die maximalen Schließkräfte, die erfahrungsgemäß auf die Haube ausgeübt werden, der Auslegung zugrunde gelegt werden. Sobald aber darüber hinausgehende Kräfte in Richtung Schließen der Haube auf diese ausgeübt werden, wie dies bei einem Crash oder speziell bei einem Fußgängerunfall geschieht, wird durch Entfernen des Anschlags aus der Schwenkbahn der Drehfalle beziehungsweise des mit ihr starr verbundenen Teils die Drehfalle zur Verschwenkung über ihre Raststellung hinaus freigegeben, so dass dann, also im Crashfalle, eine Nachgiebigkeit im vorderen Haubenbereich (um bei dem bevorzugten Einsatzfall der Erfindung zu bleiben) gegeben ist.During normal operation of the vehicle, i.e. in crash-free times, the protrudes Stop, for example, in the swivel path of the rotary latch or one rigid with it connected component of the lock assembly, so that the catch is not above its Rest position can be pivoted, the maximum closing forces that experience has shown that it can be exercised on the hood, on which the design is based. As soon as, however, additional forces in the direction of closing the hood on this be exercised, such as in a crash or especially in a pedestrian accident happens by removing the stop from the swivel path of the rotary latch or the part rigidly connected to it, the catch for pivoting released their rest position, so that then, in the event of a crash, a compliance in the front hood area (to remain in the preferred application of the invention) given is.

Zum Bewegen des Anschlags aus der Bewegungsbahn der Drehfalle beziehungsweise des mit ihr drehfest verbundenen Bauteils kennt der Fachmann eine ganze Reihe von Möglichkeiten: Beispielsweise kann ein elektrischer Antrieb für die Verlagerung des Anschlags vorgesehen sein, wobei die Auslösung des Antriebs durch einen an sich bekannten Crash- oder Pre-Crash-Sensor erfolgen kann. Während der Crashsensor unmittelbar die Berührung des Fahrzeugs mit einem fremden Gegenstand erfasst, sagt der Pre-Crash-Sensor den unmittelbar bevorstehenden Zusammenstoß voraus. Zur Verlagerung des Anschlags aus der Bahn der Drehfalle beziehungsweise des mit ihr drehfest verbundenen Bauteils kann aber auch die Massenträgheit ausgenutzt werden, wie dies an sich aus dem eingangs diskutierten Stand der Technik bekannt ist. So kann in Abwandlung von der Konstruktion nach der genannten DE 198 25 708 A1 ein linear geführter massebehafteter Anschlag vorgesehen sein, der mittels einer Druckfeder während des normalen Betriebs des Fahrzeugs im Schwenkweg der Drehfalle gesichert ist, während die Trägheitskräfte entgegen der Wirkung der Feder den Anschlag bei einem Crash aus dem Schwenkweg der Drehfalle bewegen. Ebenfalls in Verbindung mit einem Crash- oder Pre-Crash-Sensor kann eine Absprengvorrichtung für den Anschlag vorgesehen sein, die ihn im Crashfalle gleichsam entfernt. Bekanntlich finden derartige Sprengvorrichtungen im Rahmen von Sicherheitslenksäulen Einsatz, wobei durch die Sprengvorgänge Arretierungen zwischen dann teleskopierenden Lenksäulenbestandteilen beseitigt werden.To move the stop from the trajectory of the rotary latch or the the expert knows a whole series of components connected to it in a rotationally fixed manner Possibilities: For example, an electric drive for relocating the Stop may be provided, the triggering of the drive by itself known crash or pre-crash sensor can be done. During the crash sensor immediately detects the contact of the vehicle with a foreign object, says the Pre-crash sensor ahead of the imminent collision. For relocation the stop from the trajectory of the rotary trap or the rotationally fixed with it connected component, the inertia can also be exploited, such as this is known from the prior art discussed at the outset. So can be modified of the construction according to the aforementioned DE 198 25 708 A1 a linearly guided mass-related stop may be provided, which by means of a compression spring during the normal operation of the vehicle is secured in the swivel path of the rotary latch while the Inertial forces counter the action of the spring in the event of a crash Move the swivel path of the rotary latch. Also in connection with a crash or pre-crash sensor can be provided for the stop a blasting device that him in Crash trap removed as it were. As is known, such explosive devices can be found in the frame use of safety steering columns, whereby detonations between the explosions then telescopic steering column components are eliminated.

Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Zeichnung erläutert, die sich auf die schematische Wiedergabe der hier interessierenden Bestandteile der Schlossanordnung beschränkt. In allen Fällen handelt es sich um eine einer Fronthaube eines Kraftfahrzeuges zugeordnete Schlossanordnung, die von vorne betrachtet ist.An embodiment of the invention is explained below with reference to the drawing, which relate to the schematic representation of the components of the Lock arrangement limited. In all cases it is a front hood lock arrangement assigned to a motor vehicle, which is viewed from the front.

Wesentliche Bestandteile der Schlossanordnung sind der Schließbügel 1, der an der nicht dargestellten Haube vorderseitig befestigt ist, und die Drehfalle 2, die in der Darstellung der Figur 1 eine solche Schwenkstellung um die Schwenkachse 3 einnimmt, dass beim Schließen der Haube, das heißt bei Bewegung des Schließbügels 1 von oben in den Spalt 4 des Schlossgehäuses hinein, der Schließbügel 1 auf eine nach oben weisende Kante der Dreh- oder Gabelfalle 2 auftrifft. Eine weitere nach unten wirkende Schließkraft hat demgemäß - siehe Figur 2 - zur Folge, dass die Drehfalle 2 um ihre Schwenkachse 3 in der Darstellung der Figuren etwas im Uhrzeigersinn in ihre Raststellung verschwenkt wird, in der sie den Schließbügel 1 übergreift und durch die Sperrklinke 5 gesichert ist. Diese Technik ist üblich und braucht daher nicht noch weiter beschrieben zu werden. Erst bei Betätigung eines Schlüssels oder einer anderen Auslösevorrichtung wird die Sperrklinke 5 in der Darstellung der Figuren etwas im Uhrzeigersinn verschwenkt, so dass sie die Drehfalle 2 zu Schwenkbewegungen entgegen dem Uhrzeigersinn freigibt, die zur Freigabe des Schließbügels 1 und damit zur Freigabe der Haube zwecks Öffnens derselben führen.Essential components of the lock arrangement are the striker 1, which is not on the hood is shown attached to the front, and the catch 2, which in the illustration of the Figure 1 occupies such a pivot position about the pivot axis 3 that at Closing the hood, that is to say when the striker 1 moves from above into the gap 4 of the lock housing, the striker 1 on an upward-facing edge of the Rotary or fork latch 2 hits. Has another downward closing force accordingly - see Figure 2 - the consequence that the rotary latch 2 about its pivot axis 3 in the Representation of the figures is pivoted somewhat clockwise into their locking position in the it engages over the striker 1 and is secured by the pawl 5. This technique is usual and therefore need not be described further. Only when you press one Key or another trigger device, the pawl 5 in the illustration the figures pivoted somewhat clockwise so that they close the catch 2 Counterclockwise pivotal movements that release the Lead striker 1 and thus release the hood to open it.

Wichtig für die Erfindung ist nun der Anschlag 6, der in den Weg der unteren Kante der Drehfalle 2 bei Schwenkbewegungen derselben über ihre Rastlage (Figur 2) hinaus, also nach unten, liegt. Zwar ist die Schlossanordnung, wie an der Länge des Spalts 4 im Gehäuse erkennbar, für eine weitere Bewegung des Schließbügels 1 relativ zum Schlossgehäuse in Richtung nach unten ausgelegt, nämlich um einen so genannten Crashhub 7, aber in den Betriebsweisen der Figuren 1 und 2 verhindert der Anschlag 6 eine derartige Bewegung, so dass - bis auf einen schmalen Spalt zwischen den Teilen 2 und 6 - bei in der Raststellung befindlicher Drehfalle 2 diese an einer weiteren Schwenkbewegung im Uhrzeigersinn durch den Anschlag 6 gehindert ist. Damit ist die oben aufgestellte Bedingung erfüllt, dass unabhängig von der Höhe der jeweils auf die Haube ausgeübten Schließkraft stets ein und dieselbe Raststellung der Drehfalle 2 vorliegen muss.Important for the invention is now the stop 6, which is in the way of the lower edge of the Rotary latch 2 when swiveling the same beyond its locking position (FIG. 2), that is down, lies. Although the lock arrangement, as in the length of the gap 4 in Housing recognizable for a further movement of the striker 1 relative to Lock housing designed in the downward direction, namely by a so-called Crash stroke 7, but in the operating modes of Figures 1 and 2, the stop 6 prevents one such movement so that - except for a narrow gap between parts 2 and 6 - when the catch 2 is in the locked position, this involves a further pivoting movement is hindered clockwise by the stop 6. This is the above Condition met that regardless of the amount of exercise applied to the hood Closing force must always be the same locking position of the rotary latch 2.

Anders dagegen bei einem Crash, beispielsweise beim Aufprallen eines Fußgängers auf die Haube, wie dies in Figur 3 veranschaulicht ist: der Anschlag 6 ist jetzt, wie durch seine teilweise Darstellung mittels unterbrochenen Linien angedeutet, in Figur 3 nach hinten aus diesem weiteren Schwenkweg der Drehfalle 2 herausgezogen, verlagert oder pyrotechnisch weggesprengt, so dass er die Bewegung der Drehfalle 2 mit dem Schließbügel 1 aus der Lage gemäß Figur 2 (Raststellung der Drehfalle) entsprechend dem Crashhub 7 in die relative Lage der verschiedenen Teile gemäß Figur 3 nicht behindern kann. Der Crashhub 7 kann dabei entweder nur zur Erzielung einer Nachgiebigkeit oder aber als Deformationsweg ausgenutzt werden, während dessen Zurücklegung eine Umsetzung von Bewegungsenergie in Verformungsarbeit an irgendwelchen Bauteilen des Schlosses beziehungsweise des Fahrzeugs erfolgt, wie dies ein Kennzeichen für einen Deformationsweg ist.It is different in the case of a crash, for example when a pedestrian hits the Hood, as illustrated in Figure 3: the stop 6 is now as by his partial representation indicated by broken lines, in Figure 3 to the rear this further swivel path of the catch 2 is pulled out, shifted or pyrotechnically blown away, so that he the movement of the catch 2 with the striker 1 from the Position according to Figure 2 (locking position of the rotary latch) corresponding to the crash stroke 7 in the relative position of the different parts according to Figure 3 can not hinder. The Crashhub 7 can either only be used to achieve compliance or as a deformation path be exploited, during the transfer of kinetic energy in deformation work on any components of the castle or Vehicle takes place, as this is a sign of a deformation path.

Mit der Erfindung ist demgemäß mit einfachen Mitteln eine Lösung der definierten Aufgabe geschaffen, zwei an sich einander widersprechende Forderungen, nämlich Steife und Nachgiebigkeit, in Abhängigkeit von den Betriebszuständen - normaler Betrieb, Crashbetrieb - zu erfüllen.Accordingly, the invention achieves the defined task with simple means created two contradictory requirements, namely stiffness and Compliance, depending on the operating conditions - normal operation, Crash operation - to be fulfilled.

Claims (5)

Schlossanordnung, insbesondere für eine Fronthaube eines Kraftfahrzeugs, mit einer zwischen einer Freigabestellung und einer Raststellung für einen Schließbügel schwenkbaren Drehfalle sowie mit Einrichtungen, die durch crashbedingte Kräfte hervorgerufene Lageänderungen der Drehfalle zulassen, dadurch gekennzeichnet, dass die Einrichtungen einen im crashfreien Betrieb Schwenkbewegungen der Drehfalle (2) unter dem Einfluss von Schließkräften über die Raststellung hinaus begrenzenden Anschlag (6) sowie Mittel zu seiner Verlagerung bei einem Crash in eine die Schwenkbewegungen der Drehfalle (2) über die Raststellung hinaus zulassende Position enthalten.Lock arrangement, in particular for a front hood of a motor vehicle, with a rotary latch which can be swiveled between a release position and a latching position for a striker, and with devices which permit changes in position of the rotary latch caused by crash-related forces, characterized in that the devices allow swivel movements of the rotary latch in crash-free operation ( 2) under the influence of closing forces beyond the detent position limiting stop (6) and means for its displacement in the event of a crash into a position permitting the pivoting movements of the rotary latch (2) beyond the detent position. Schlossanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel eine anschlagseitige träge Masse enthalten.Lock arrangement according to claim 1, characterized in that the means contain a stop-side inert mass. Schlossanordnung nach Anspruch 2, dadurch gekennzeichnet, dass der Anschlag in crashfreien Zeiten durch eine Feder in seiner die Schwenkbewegung der Drehfalle (2) begrenzenden Position gehalten ist.Lock arrangement according to claim 2, characterized in that the stop is held in crash-free times by a spring in its position limiting the pivoting movement of the rotary latch (2). Schlossanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel einen Crash- oder Pre-Crash-Sensor und einen von diesem ansteuerbaren elektrischen Antrieb für die Verlagerung enthalten.Lock arrangement according to claim 1, characterized in that the means contain a crash or pre-crash sensor and an electric drive controllable by this for the displacement. Schlossanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel einen Crash- oder Pre-Crash-Sensor sowie eine von diesem betätigbare Absprengvorrichtung für den Anschlag enthalten.Lock arrangement according to claim 1, characterized in that the means contain a crash or pre-crash sensor and a detachable device actuated by the latter for the stop.
EP01250241A 2000-07-12 2001-06-27 Locking device, in particular for motor vehicle bonnets Expired - Lifetime EP1172507B1 (en)

Applications Claiming Priority (2)

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DE10033772 2000-07-12
DE10033772A DE10033772A1 (en) 2000-07-12 2000-07-12 Lock arrangement, in particular for a motor vehicle front hood

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EP1172507A2 true EP1172507A2 (en) 2002-01-16
EP1172507A3 EP1172507A3 (en) 2003-09-03
EP1172507B1 EP1172507B1 (en) 2005-08-03

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847929A1 (en) * 2002-12-03 2004-06-04 Renault Sa LOCK FOR MOTOR VEHICLE HOOD FOR PEDESTRIAN SHOCK ABSORBING.
FR2863298A1 (en) * 2003-12-09 2005-06-10 Oxford Automotive Mecanismes E Hood lock for use in motor vehicle, has cam with end that cooperates with edge of bolt when bolt is turned under effect of force exerted by strike plate wire, and leaf spring that tends to turn cam to slow down rotation of bolt
FR2863297A1 (en) * 2003-12-09 2005-06-10 Oxford Automotive Mecanismes E Lock for motor vehicle hood, has cam rotating around axis and having end cooperating with edge of bolt when bolt is turned under effect of force exerted by strike plate wire, and spring turning cam so that spring brakes bolt rotation
FR2874956A1 (en) * 2004-09-07 2006-03-10 Coutier Moulage Gen Ind Vertical lock for motor vehicle hood, has bolt pivoting beyond locking position of wire strike to absorb energy of impact at proximity to hood and to compress hood, and having three locking detents receiving ratchet
WO2006091996A1 (en) * 2005-03-04 2006-09-08 Magna Steyr Fahrzeugtechnik Ag & Co Kg Catch arrangement for the bonnet of a motor vehicle
DE10204422B4 (en) * 2002-01-29 2016-04-07 Witte-Velbert Gmbh & Co. Kg Ratchet closure
WO2017182026A1 (en) * 2016-04-18 2017-10-26 Kiekert Ag Locking device for a motor vehicle bonnet
CN109229053A (en) * 2018-08-31 2019-01-18 浙江吉利汽车研究院有限公司 A kind of collapse type hood lock construction
US10717407B2 (en) 2017-11-21 2020-07-21 Magna Closures Inc. Dual catch mechanism for active pedestrian safety latch
US11060327B2 (en) 2018-05-04 2021-07-13 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch
US11066854B2 (en) 2018-01-29 2021-07-20 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch with meshed gears
US11318909B2 (en) 2018-01-29 2022-05-03 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch
US20230100618A1 (en) * 2021-09-30 2023-03-30 Honda Motor Co., Ltd. Lock mechanism of a storage box
US12129693B2 (en) 2016-04-18 2024-10-29 Kiekert Ag Locking device for a motor vehicle bonnet

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DE10259114B4 (en) * 2002-12-18 2016-12-29 Volkswagen Ag Locking device for a front hood of a motor vehicle
DE102005016186A1 (en) 2005-04-08 2006-10-12 Bayerische Motoren Werke Ag Lock with a stop device, in particular on the front hood of a motor vehicle
DE102010062700A1 (en) * 2010-12-09 2012-06-14 Bayerische Motoren Werke Aktiengesellschaft Lock for engine bonnet of motor vehicle, has transmission element acting together with catch element over inclined surface or projection at catch element, such that catch element is temporarily adjusted against clamping force of spring part

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DE29804648U1 (en) * 1998-03-14 1998-05-14 Schloß- und Metallwarenfabrik Böddecker & Co. GmbH & Co. KG, 42327 Wuppertal Bonnet lock for a motor vehicle

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US3667791A (en) 1969-02-13 1972-06-06 Aisin Seiki Door lock mechanism
DE19511651A1 (en) 1994-04-15 1995-10-19 Volkswagen Ag Lock system for vehicle doors with inertia operated equipment
DE19624640C1 (en) 1996-06-20 1998-01-08 Kiekert Ag Vehicle doorlock with pivoting latch
DE19631262A1 (en) 1996-08-02 1998-02-05 Bosch Gmbh Robert Motor vehicle door lock or the like.
DE19825708A1 (en) 1997-06-19 1999-03-18 Volkswagen Ag Lock for vehicle door with rotary bolt-like locking member

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10204422B4 (en) * 2002-01-29 2016-04-07 Witte-Velbert Gmbh & Co. Kg Ratchet closure
FR2847929A1 (en) * 2002-12-03 2004-06-04 Renault Sa LOCK FOR MOTOR VEHICLE HOOD FOR PEDESTRIAN SHOCK ABSORBING.
WO2004053262A1 (en) * 2002-12-03 2004-06-24 Renault S.A.S Motor vehicle hood lock for damping pedestrian impacts
FR2863298A1 (en) * 2003-12-09 2005-06-10 Oxford Automotive Mecanismes E Hood lock for use in motor vehicle, has cam with end that cooperates with edge of bolt when bolt is turned under effect of force exerted by strike plate wire, and leaf spring that tends to turn cam to slow down rotation of bolt
FR2863297A1 (en) * 2003-12-09 2005-06-10 Oxford Automotive Mecanismes E Lock for motor vehicle hood, has cam rotating around axis and having end cooperating with edge of bolt when bolt is turned under effect of force exerted by strike plate wire, and spring turning cam so that spring brakes bolt rotation
FR2874956A1 (en) * 2004-09-07 2006-03-10 Coutier Moulage Gen Ind Vertical lock for motor vehicle hood, has bolt pivoting beyond locking position of wire strike to absorb energy of impact at proximity to hood and to compress hood, and having three locking detents receiving ratchet
WO2006091996A1 (en) * 2005-03-04 2006-09-08 Magna Steyr Fahrzeugtechnik Ag & Co Kg Catch arrangement for the bonnet of a motor vehicle
WO2017182026A1 (en) * 2016-04-18 2017-10-26 Kiekert Ag Locking device for a motor vehicle bonnet
US12129693B2 (en) 2016-04-18 2024-10-29 Kiekert Ag Locking device for a motor vehicle bonnet
US12000185B2 (en) 2016-04-18 2024-06-04 Kiekert Ag Locking device for a motor vehicle bonnet
US10717407B2 (en) 2017-11-21 2020-07-21 Magna Closures Inc. Dual catch mechanism for active pedestrian safety latch
US11318909B2 (en) 2018-01-29 2022-05-03 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch
US11066854B2 (en) 2018-01-29 2021-07-20 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch with meshed gears
US11060327B2 (en) 2018-05-04 2021-07-13 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch
CN109229053A (en) * 2018-08-31 2019-01-18 浙江吉利汽车研究院有限公司 A kind of collapse type hood lock construction
US20230100618A1 (en) * 2021-09-30 2023-03-30 Honda Motor Co., Ltd. Lock mechanism of a storage box

Also Published As

Publication number Publication date
EP1172507B1 (en) 2005-08-03
EP1172507A3 (en) 2003-09-03
DE50106945D1 (en) 2005-09-08
DE10033772A1 (en) 2002-01-24

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