EP3445932B1 - Locking device for a motor vehicle bonnet - Google Patents

Locking device for a motor vehicle bonnet Download PDF

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Publication number
EP3445932B1
EP3445932B1 EP17722654.5A EP17722654A EP3445932B1 EP 3445932 B1 EP3445932 B1 EP 3445932B1 EP 17722654 A EP17722654 A EP 17722654A EP 3445932 B1 EP3445932 B1 EP 3445932B1
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EP
European Patent Office
Prior art keywords
latching
latching device
barrier
latch holder
catch hook
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.)
Active
Application number
EP17722654.5A
Other languages
German (de)
French (fr)
Other versions
EP3445932A1 (en
Inventor
Holger Schiffer
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.)
Kiekert AG
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Kiekert AG
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Filing date
Publication date
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Publication of EP3445932A1 publication Critical patent/EP3445932A1/en
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Publication of EP3445932B1 publication Critical patent/EP3445932B1/en
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Classifications

    • 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
    • E05B85/243—Bolts rotating about an axis with a bifurcated bolt
    • 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
    • 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
    • E05B83/243—Hood clamps, i.e. individually actuated, usually yielding hooks

Definitions

  • the invention relates to a locking device for a hood of a motor vehicle according to the preamble of the main claim.
  • securing hook 200 has a curved surface 240, which is displaced from an open state to a closed state by the locking bolt 10 when the bonnet is closed, so that the securing hook 200 is pivoted slowly and then quickly according to the slope of the curve, in order to reach the Closed position of the bonnet lock to reduce friction noises.
  • a locking device for a bonnet of a motor vehicle with a locking device which has a locking mechanism with a rotary latch and a pawl for locking the rotary latch and also a catch hook which can limit an opening movement of a lock holder after the locking mechanism has been opened at a safety position.
  • An end position of the locking device is provided in which the lock holder can only slide out of the intended closed position in the event of an overload.
  • a locking device according to the main claim is used to solve the problem.
  • Advantageous embodiments emerge from the subclaims.
  • a locking device for a bonnet of a motor vehicle comprising a locking mechanism with a rotary latch and a pawl for locking the rotary latch in a main detent position, the locking device also having a catch hook that allows an opening movement of a lock holder after opening the Locking device can limit locking device at a securing position between an intended closed position and an intended open position, there being an end position of the locking device in which the lock holder can only dive out of the intended closed position in the event of an overload, the catch hook having a barrier and the locking device being designed in this way that during a closing process at an excessively high closing speed, the closing movement of the lock holder at the intended closed position of the lock holder is limited by the barrier.
  • the fact that the catch hook has a barrier and the locking device is designed in such a way that the closing movement of the lock holder at the intended closed position of the lock holder is limited by the barrier during a closing process at an excessively high closing speed means that damage to the engine hood can be avoided.
  • the combination of the catch hook with the above-described barrier and the above-described end position of the locking device enables integrated pedestrian protection, in which at the same time damage to the engine hood due to incorrect use, in particular during the closing process, can be excluded.
  • the rotary latch In the main locking position of the rotary latch, the rotary latch is locked by the pawl, so that a rotation of the rotary latch to release the lock holder that has been received can be prevented in principle.
  • the intended open position usually allows viewing and / or access to the motor.
  • the engine hood is raised at a distance from the vehicle body that allows a person to see and / or make the engine accessible.
  • the intended closed position is assumed to operate the vehicle.
  • the bonnet is aligned with the visible outside in the intended closed position with the adjacent vehicle body.
  • the engine hood in the intended closed position on the inside is at a fixed distance from the adjacent vehicle body, so that the engine hood could move beyond the intended closed position in the direction of the vehicle body and possibly hit the vehicle body without the locking device.
  • the securing position is generally at a distance from the intended closed position in the direction of the intended open position, i.e. in the direction of an opening movement that a hand can only be inserted flat from the outside between the engine hood and the vehicle body.
  • Just flat means that the palm of the hand is oriented parallel to the bonnet and / or a hand held across it cannot be inserted between the bonnet and the vehicle body.
  • the lock holder executes a closing movement starting from the intended open position in the direction of the intended closed position, that is to say in the closing movement direction, which is indicated by an arrow in the figures.
  • the closing movement basically runs along a defined and / or guided movement path, with the pivot bearing, in particular the engine hood, generally serving as such a guide.
  • An opening movement and a closing movement are opposite movements, i.e. movements in the opposite direction along the same path of movement.
  • the opening movement and the closing movement are basically both a relative movement between the lock holder and the locking device. This is because the lock holder can be attached both to the engine hood and to the adjacent vehicle body in a closed position, or vice versa.
  • the locking device can be attached both to the vehicle body or to the engine hood.
  • the locking device is designed in such a way that, during a closing process, the closing movement of the lock holder at the intended closed position of the lock holder is limited by the barrier only at an excessively high closing speed.
  • a low wear of the barrier and thus a long service life of the locking device can thus be made possible.
  • the engine hood is dropped from the raised open position with its own weight and / or a small additional manual or automatic force and / or accelerated in the closing direction of movement.
  • the closing movement of the lock holder relative to the locking device is due to the impact on the catch hook and its displacement by pivoting and by an opening spring for the engine hood braked as a result of the frictional forces and / or force of the catch hook spring.
  • the closing speed of the lock holder during a normal closing process is only so low that the kinetic energy through the opening spring and / or preferably until the intended closed position of the lock holder is reached the torsion latch spring is absorbed.
  • the rotary latch spring is basically pretensioned in the opening direction of the rotary latch.
  • the closing movement of the lock holder is limited by an opening spring and / or rotary latch spring at the intended closed position.
  • Limiting at a position means that when the lock holder reaches the position when executing a movement in one direction of movement, the movement of the lock holder in this direction of movement is stopped, that is to say limited.
  • this limitation of movement is preferably done by striking. This also applies in particular to the limitation of the opening movement by the catch hook at the securing position and / or for the limitation of submersion by a submersion stop at the submersion position.
  • such a pivoting must not lead to impact against a submersible stop. Because when the lock holder hits the submersible stop during a closing process, the bonnet could be damaged by the bonnet deflecting.
  • the lock holder is limited in the closed position by the opening spring and / or rotary latch spring in such a way that the engine hood cannot be damaged.
  • the force of the opening spring and / or rotary latch spring would not be sufficient to limit the closing movement of the lock holder at the intended closed position in such a way that a Deflection and pivoting of the rotary latch against the force of the rotary latch spring would be less than 25 °, preferably less than 15 °, particularly preferably less than 5 °.
  • the lock holder could also hit the submersible stop with full force and the bonnet would deflect. In both cases, damage to the bonnet could no longer be ruled out.
  • the locking device is fundamentally not in the end position.
  • the lock holder can only descend beyond the intended closed position in the event of an overload does not particularly affect the closing process, but preferably only an operating state suitable for driving the motor vehicle, i.e. when the engine hood is closed, the locking mechanism is in the main detent position and / or the catch hook is in an end position.
  • Load means a force which is exerted by the lock holder on the rotary latch in the closed position in order to pivot the rotary latch against the force of the rotary latch spring, that is to say counterclockwise. So load means a force in the direction of a submergence.
  • Overload means a load or force above a threshold load.
  • the dead weight of the bonnet and / or the force of the pawl spring cannot generate an overload.
  • the threshold load is equal to or greater than the force of the opening spring and / or rotary latch spring - possibly reduced by the static weight force the bonnet - i.e. the forces acting on the lock holder in the main detent position and closed position in the direction of the open position, which is absorbed by the latched pawl via the lock plate 14 in order to ensure mechanical equilibrium and thus a constant position of the lock holder in the closed position.
  • Descending beyond the intended closed position means that the closing movement of the lock holder continues beyond the intended closed position.
  • Diving means a movement of the lock holder, in particular along the movement path, starting at the intended closed position.
  • the direction of the downward movement is opposite to the opening direction.
  • Diving the lock holder means causing a deflection of the rotary latch 1 beyond the main locking position.
  • the maximum immersion path preferably at least 15 mm and / or at most 25 mm, along the path of movement from the intended closed position to the immersion position is designed in such a way that the engine hood is usually not accelerated enough even in the event of a pedestrian impact to be able to even hit the Lock holder on the plunge stop to cause damage to the bonnet.
  • FIGS. 1 to 7 show an embodiment of a locking device according to the invention.
  • the rotary latch 1 and the pawl 2 and the lock plate 14 are hidden.
  • Figure 7 show the Figure 5 with overlaid rotary latch 1 and pawl 2 in the main locking position and the lock plate 14, ie a plate for attaching the rotary latch 1 and pawl 2, preferably with a lock plate inlet slot for the lock holder, which is also in Figure 3 can be seen.
  • the rotary latch 1 is rotatably mounted about the rotary latch axis 15.
  • the rotary latch 1 is biased in a clockwise direction in particular by a rotary latch spring (not shown).
  • the pawl 2 is mounted rotatably about the pawl axis 16.
  • the pawl 2 is biased in a clockwise direction in particular by a pawl spring, not shown.
  • the catch hook 3 is mounted rotatably about the catch hook axis 17.
  • the catch hook 3 is biased in the counterclockwise direction in particular by a catch hook spring (not shown).
  • An opening spring which is also not shown in the figures, presses the engine hood and thus the lock holder starting from the closed position in the direction of the open position.
  • the catch hook 3 has a hook shape, preferably with the shape of a "1".
  • the upper slope 13 is used for pivoting as a result of a lock holder hitting it and sliding along it during a closing movement, as in FIG Figure 1 shown.
  • the V-shaped recess serves as a safety stop and / or safety catch point for the lock holder after leaving the locking mechanism.
  • the hook shape represents one of two legs connected in a U-shape, the inlet slot 19 of the catch hook 3 running between the two legs.
  • the submersion is preferably limited by a submersion stop, in particular at the bottom of the recess.
  • the closing movement of the lock holder 4 is limited in the event of an excessively high closing speed by striking against the barrier 6 and / or the lock holder 4 is in the intended closed position of the lock holder 4 when it hits the barrier 6.
  • the envisaged closed position is a position on the movement path 5 of the lock holder.
  • the lock holder 4 strikes against the barrier 6, the lock holder 4 is immediately brought into the position for locking the locking mechanism and held there. Damage to the locking mechanism can thus be avoided. Furthermore, only by pivoting the catch hook 3, the recess 12 can be provided for the lock holder 4 to enable it to submerge in the event of an overload.
  • the locking mechanism is in the main locking position when the lock holder 4 strikes against the barrier 6 and / or in the end position of the locking device.
  • the catch hook 3 has a catch hook spring which biases the catch hook 3 in the direction of the end position.
  • Preloading in the direction of the end position means that the catch hook spring transmits a torque about the catch hook axis 17 counterclockwise to the catch hook 3.
  • the catch hook spring can also be used to move the recess 12 particularly quickly and reliably below a lock holder 4 that is struck against the barrier, so that the lock holder 4 can submerge in the event of an overload.
  • the catch hook 3 has an inlet slot 19 for receiving the lock holder 4.
  • the inlet slot 19 of the catch hook 3 enables the implementation of a very compact mechanism for avoiding engine hood damage as a result of incorrect use while at the same time securing pedestrians by means of an immersion option for the lock holder in the event of overload.
  • the barrier 6 is a surface section of the inlet slot 19 or the barrier 6 is connected to the inlet slot 19 in a materially bonded manner and / or in a fixed manner.
  • a surface section is usually made in one piece with the inlet slot 19 and / or the catch hook 3, i.e. made from one piece of material, e.g. stamped out together as a coherent component from a single sheet metal.
  • a materially bonded barrier can be welded, soldered or glued on.
  • a barrier 6 that is fixedly connected to the inlet slot 19 has no degree of freedom of movement relative to the inlet slot 19.
  • a motion-proof connection can be established by a form-fitting and / or force-fitting connection, such as a clip connection.
  • the inlet slot 19 comprises a recess 12 for immersing the lock holder 4 and / or the recess 12 for immersing the lock holder 4 is a contour section of the inlet slot 19.
  • a recess is a means that can be produced in a particularly simple manner to enable immersion, particularly if it is designed as a contour section of the inlet slot 19.
  • Contour section means a limited surface section of the contour of the inlet slot, which is usually produced in one piece, for example by punching.
  • the recess 12 is U-shaped, one side wall forming an edge with the barrier 6 or its surface section, in particular at an angle of at least 80 ° and / or at most 90 °.
  • the other side wall is oriented parallel to the movement path 5 and preferably corresponds to the second side wall 9 of the inlet slot 19, so that the lock holder can descend in a straight line.
  • the barrier 6 and the recess 12 are arranged next to one another and / or directly adjoin one another.
  • the lock holder 4 in the end position of the locking device, rests against a side wall of the inlet slot 19, in particular against a second side wall 9, and the locking mechanism is in the main locking position.
  • the end position can thus be defined by a lock holder 4, which is locked by the locking mechanism located in the main notch and is pressed against the side wall by the catch hook spring.
  • the inlet slot 19 has a constriction 7 for a precisely fitting passage of the lock holder 4.
  • Exactly fitting means that the constriction 7 provides a passage for the lock holder 4, the size of which corresponds to the size of the lock holder plus a clearance fit, so that the lock holder 4 just fits through the passage with play.
  • the catch hook 3 is swiveled into a defined rotational position when the lock holder 4 is passed, ie traversed.
  • the closing movement of the lock holder 4 takes place along a defined movement path 5, the movement path 5 intersecting the barrier 6 and / or a catch hook axis 17 of the catch hook 3 when the lock holder 4 is located in the constriction 7.
  • Cutting the movement path 5 means cutting a straight line along the movement path 5 or a movement path 5 without any barriers or stops.
  • the movement path 5 intersects the barrier 6 and / or a catch hook axis 17 of the catch hook 3 when the lock holder 4 is located in the constriction 7, the energy of striking the lock holder 4 at excessive closing speed against the barrier 6 can be absorbed by the catch hook spring 17 without inducing a torque in the catch hook 3 and thus pivoting it.
  • the locking device is designed in such a way that after the lock holder 4 has passed the constriction 7 during a closing process, the catch hook spring swivels the catch hook 3 in the direction of the end position.
  • the locking device is designed in such a way that during a closing process, especially after passing through the constriction 7, a lock holder 4 with an excessively high closing speed reaches the barrier 6 faster, in particular overcomes a distance between the constriction 7 and the barrier 6 than the catch hook 3 can pivot into the end position.
  • the locking device is designed in such a way that during a closing process, in particular after passing the constriction 7, a lock holder 4 at normal closing speed by pivoting the catch hook 3 into the end position before the lock holder 4 reaches the intended closed position against the side wall of the inlet slot, in particular the second side wall 9 strikes and / or the closing movement is limited in the closed position above the recess 12 in particular by a force of an opening spring and / or a rotary latch spring.
  • the opening spring is used to raise the lock holder 4 in the opposite direction to the plunging movement.
  • a locking device which is designed in such a way that, during a closing process, the closing movement of the lock holder 4 is limited by the barrier 6 at the intended closed position of the lock holder 4 only at an excessively high closing speed, can thus be made possible.
  • the barrier 6 is designed in such a way that the barrier 6 is not plastically deformed as planned.
  • the locking device is designed in such a way that the closing movement of the lock holder 4 in the event of an overload at a submerged position is limited by a submerged stop 10 of the catch hook 3.
  • the immersion stop 10 integrated in the catch hook enables additional parts to be saved.
  • the descent stop 10 allows reproducible descent with a defined descent path. Damage to the bonnet due to a collision with the adjacent vehicle body can thus be avoided.
  • the barrier is integrated in the catch hook in order to achieve the advantages mentioned above.
  • the immersion path that is to say the distance between the immersion position and the intended closed position, is at least 10 mm, preferably 14 mm, and / or at most 20 mm, preferably at most 16 mm. Effective pedestrian protection can be achieved in this way.
  • the entrance of the inlet slot 19 is on the opposite side of the submersion stop 10 and / or the catch hook rotation axis 17. Because this allows the lock holder to get into the inlet slot 19 during the closing movement by pivoting the catch hook 3, which will be described in more detail later.
  • a first side wall 8 and / or a second side wall 9 of the inlet slot 19 are provided.
  • the entrance of the inlet slot 19 is preferably triangular, preferably with a receiving bevel 18, only one of the two side walls, in particular the first side wall 8, extending at an angle in the direction of the barrier 6 to produce the triangular shape.
  • the first side wall 8 forms an L-shape together with the barrier 6 in an area adjoining the barrier 6.
  • the barrier is at least as long as the lock holder 4 wide and / or at most twice as long as the lock holder 4 wide.
  • only one barrier 6 is provided, whereby a particularly simple mechanism can be achieved.
  • the locking mechanism is designed so that the pawl 2 remains in its position or is held in its position when the lock holder 4 is overloaded and the lock holder 4 is submerged, e.g. by a retaining means, so that the pawl 1 engages with the pawl 2 again when it is pivoted back .
  • the pawl 2 can also be rotated with the rotary latch 1 pivoting as a result of the lock holder 4 being submerged, while maintaining the latching.
  • a release lever which can be triggered by means of a Bowden cable or the like is provided on the vehicle body, which is covered by the engine hood, which can release the pawl from the locked position with the rotary latch located in the main locked position.
  • the lock holder 4 which is preferably fastened on the underside of the engine hood, is released.
  • the bonnet or the lock holder is pushed out of the triggered locking mechanism in the direction of the open position by an opening spring. This opening movement is initially limited by the safety stop 11 of the catch hook 3.
  • the user can now reach under the bonnet with the flat of his hand in order to actuate a swiveling lever for the catch hook 3, which the catch hook 3 pivoted clockwise against the catch hook spring force so that the lock holder 4 is no longer limited by the safety stop 11 in the movement path 5, at least as long as the catch hook 3 remains pivoted against the catch hook spring force.
  • the opening spring pushes the lock holder 4 in the direction only a little towards the intended open position, just enough so that after the catch hook 3 is released, the lock holder 4 is prevented by the outer bevel 13 of the catch hook 3 from returning to the securing position defined by the safety stop 11 reach.
  • the intended open position is defined by a stopper or a holding mechanism which allows the user sufficient space for convenient access and easy inspection of the motor.
  • the user will release the holding mechanism in the intended open position and the bonnet will either fall itself under the force of gravity in the direction of the vehicle body and / or the user will also apply a force in the same direction.
  • Figure 4 shows the case of a lock holder 4 with an excessively high closing speed. Because the lock holder 4 reaches the barrier 6 before the catch hook 3 could pivot counterclockwise into the end position by the catch hook spring.
  • the locking mechanism engages analogously to Figure 7 .
  • the catch hook 3 can thus continue its pivoting movement into the end position until the lock holder strikes laterally against the second side wall 9 of the inlet slot 19, as in FIG Figure 5 shown.
  • the closing device In both cases, that is, with and without an excessively high closing speed, the closing device is thus in the end position which allows diving in the event of an overload.
  • the lock holder will therefore equally overcome the force of the opening spring and rotary latch spring and submerge in both cases as a result of the overload. Diving down can only take place up to the stop at the stop position. However, this immersion path is generally sufficient to reduce the severity of the injury to the pedestrian as a result of the accident caused by the immersion of the lock holder 4.
  • the recess 12 is parallel or mirror-symmetrical to the movement path 5 in the end position of the closing device or a section formed between catch hook axis 17 and safety stop 11 when the lock holder 4 strikes against the barrier 6.
  • a straight line formed by the movement path 5 runs through the catch hook axis 17 in the end position.

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Description

Die Erfindung betrifft eine Schließvorrichtung für eine Motorhaube eines Kraftfahrzeugs gemäß dem Oberbegriff des Hauptanspruchs.The invention relates to a locking device for a hood of a motor vehicle according to the preamble of the main claim.

Personenunfälle zwischen einem Kraftfahrzeug und einem Fußgänger führen in der Regel zu schweren Verletzungen des Fußgängers insbesondere durch den Aufprall des Fußgängers auf die Motorhaube. Bei einem solchen Unfall kann bereits ein geringfügiges Nachgeben der Motorhaube beim Aufprall des Fußgängers die Schwere der Verletzungen reduzieren.Personal accidents between a motor vehicle and a pedestrian generally lead to serious injuries to the pedestrian, in particular when the pedestrian hits the bonnet. In such an accident, even a slight yielding of the bonnet upon impact with the pedestrian can reduce the severity of the injuries.

Daher sind bereits Lösungen bekannt, ein solches Nachgeben der Motorhaube zu ermöglichen. Die Druckschriften EP1172507B1 , DE102008039731A1 und KR20130019686A offenbaren Motorhaubenschlösser und Motorhaubenverriegelungen mit Fußgängeraufprallschutz. Bei der KR20130019686A weist ein Sicherungshaken 200 eine gekurvte Oberfläche 240 auf, die beim Schließen der Motorhaube von einem geöffneten Zustand in einen geschlossenen Zustand durch den Schließbolzens 10 verdrängt wird, so dass der Sicherungshaken 200 entsprechend der Kurvensteigung zunächst langsam und dann schnell verschwenkt, um bis zum Erreichen des Geschlossenen Zustands der Motorhaubenverriegelung Reibgeräusche zu reduzieren. Aus der FR 2 889 230 A1 ist eine Schließvorrichtung für eine Motorhaube eines Kraftfahrzeugs mit einer Schließvorrichtung, die ein Gesperre mit einer Drehfalle und einer Sperrklinke zum Verrasten der Drehfalle und ferner einen Fanghaken aufweist, der eine Öffnungsbewegung eines Schlosshalters nach einem Öffnen des Gesperres an einer Sicherungsposition begrenzen kann. Es ist eine Endstellung der Schließvorrichtung vorgesehen, in der der Schlosshalter nur bei einer Überlast aus der einer vorgesehenen Geschlossenposition abtauchen kann.Solutions are therefore already known to enable the hood to yield in this way. The pamphlets EP1172507B1 , DE102008039731A1 and KR20130019686A disclose hood locks and hood latches with pedestrian impact protection. In the KR20130019686A a securing hook 200 has a curved surface 240, which is displaced from an open state to a closed state by the locking bolt 10 when the bonnet is closed, so that the securing hook 200 is pivoted slowly and then quickly according to the slope of the curve, in order to reach the Closed position of the bonnet lock to reduce friction noises. From the FR 2 889 230 A1 is a locking device for a bonnet of a motor vehicle with a locking device which has a locking mechanism with a rotary latch and a pawl for locking the rotary latch and also a catch hook which can limit an opening movement of a lock holder after the locking mechanism has been opened at a safety position. An end position of the locking device is provided in which the lock holder can only slide out of the intended closed position in the event of an overload.

Bei den bekannten Lösungen kann jedoch in der Regel nicht ausgeschlossen werden, dass auch eine Fehlbenutzung, also ein Schließen der Motorhaube mit übermäßig großer Schließgeschwindigkeit, zu einem Nachgeben der Motorhaube führt, was grundsätzlich zu Beschädigungen an der Motorhaube führen kann.In the case of the known solutions, however, it cannot generally be ruled out that incorrect use, that is to say that the engine hood is closed as well Excessively high closing speed, leads to a yielding of the bonnet, which in principle can lead to damage to the bonnet.

Es ist daher Aufgabe der Erfindung, eine weiterentwickelte Schließvorrichtung für eine Motorhaube eines Kraftfahrzeugs bereitzustellen.It is therefore the object of the invention to provide a further developed locking device for an engine hood of a motor vehicle.

Zur Lösung der Aufgabe dient eine Schließvorrichtung gemäß Hauptanspruch. Vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.A locking device according to the main claim is used to solve the problem. Advantageous embodiments emerge from the subclaims.

Die Aufgabe wird gelöst durch eine Schließvorrichtung für eine Motorhaube eines Kraftfahrzeugs, wobei die Schließvorrichtung ein Gesperre mit einer Drehfalle und einer Sperrklinke zum Verrasten der Drehfalle in einer Hauptrastposition umfasst, wobei die Schließvorrichtung ferner einen Fanghaken aufweist, der eine Öffnungsbewegung eines Schlosshalters nach einem Öffnen des Gesperres an einer Sicherungsposition zwischen einer vorgesehenen Geschlossenposition und einer vorgesehenen Geöffnetposition begrenzen kann, wobei es eine Endstellung der Schließvorrichtung gibt, in der der Schlosshalter nur bei einer Überlast aus der vorgesehenen Geschlossenposition abtauchen kann, wobei der Fanghaken eine Barriere aufweist und die Schließvorrichtung so beschaffen ist, dass bei einem Schließvorgang bei übermäßig großer Schließgeschwindigkeit die Schließbewegung des Schlosshalters an der vorgesehenen Geschlossenposition des Schlosshalters durch die Barriere begrenzt wird.The object is achieved by a locking device for a bonnet of a motor vehicle, the locking device comprising a locking mechanism with a rotary latch and a pawl for locking the rotary latch in a main detent position, the locking device also having a catch hook that allows an opening movement of a lock holder after opening the Locking device can limit locking device at a securing position between an intended closed position and an intended open position, there being an end position of the locking device in which the lock holder can only dive out of the intended closed position in the event of an overload, the catch hook having a barrier and the locking device being designed in this way that during a closing process at an excessively high closing speed, the closing movement of the lock holder at the intended closed position of the lock holder is limited by the barrier.

Dadurch, dass der Fanghaken eine Barriere aufweist und die Schließvorrichtung so beschaffen ist, dass bei einem Schließvorgang bei übermäßig großer Schließgeschwindigkeit die Schließbewegung des Schlosshalters an der vorgesehenen Geschlossenposition des Schlosshalters durch die Barriere begrenzt wird, kann eine Beschädigung der Motorhaube vermieden werden.The fact that the catch hook has a barrier and the locking device is designed in such a way that the closing movement of the lock holder at the intended closed position of the lock holder is limited by the barrier during a closing process at an excessively high closing speed means that damage to the engine hood can be avoided.

Durch das Vorsehen einer Endstellung der Schließvorrichtung, in der der Schlosshalter nur bei einer Überlast aus der vorgesehenen Geschlossenposition abtauchen kann, kann ein Fußgängerschutz mit besonders geringem Aufwand, ohne oder nur geringen Zusatzteilen und besonders kompakt in der Schließvorrichtung implementiert werden.By providing an end position of the locking device in which the lock holder can only descend from the intended locked position in the event of an overload, pedestrian protection can be implemented in the locking device with particularly little effort, with little or no additional parts and in a particularly compact manner.

Die Kombination aus dem Fanghaken mit oben beschriebener Barriere und oben beschriebener Endstellung der Schließvorrichtung ermöglicht einen integrierten Fußgängerschutz, bei dem gleichzeitig eine Beschädigung der Motorhaube durch eine Fehlbenutzung insbesondere beim Schließvorgang ausgeschlossen werden kann.The combination of the catch hook with the above-described barrier and the above-described end position of the locking device enables integrated pedestrian protection, in which at the same time damage to the engine hood due to incorrect use, in particular during the closing process, can be excluded.

In der Hauptrastposition der Drehfalle ist wird die Drehfalle durch die Sperrklinke verrastet, so dass ein Drehen der Drehfalle zum Freigeben des aufgenommenen Schlosshalters grundsätzlich verhindert werden kann.In the main locking position of the rotary latch, the rotary latch is locked by the pawl, so that a rotation of the rotary latch to release the lock holder that has been received can be prevented in principle.

Die vorgesehene Geöffnetposition erlaubt in der Regel ein Einsehen und/oder Zugänglichmachen des Motors. Die Motorhaube ist in der vorgesehenen Geöffnetposition mit einem Abstand zur Fahrzeugkarosserie angehoben, der einer Person ein solches Einsehen und/oder Zugänglichmachen des Motors erlaubt.The intended open position usually allows viewing and / or access to the motor. In the intended open position, the engine hood is raised at a distance from the vehicle body that allows a person to see and / or make the engine accessible.

Die vorgesehene Geschlossenposition wird zum Betrieb des Fahrzeugs eingenommen. Die Motorhaube fluchtet mit der sichtbaren Außenseite in der vorgesehenen Geschlossenposition mit der angrenzenden Fahrzeugkarosserie.The intended closed position is assumed to operate the vehicle. The bonnet is aligned with the visible outside in the intended closed position with the adjacent vehicle body.

In der Regel weist die Motorhaube in der vorgesehenen Geschlossenposition an der Innenseite einen festgelegten Abstand zur angrenzenden Fahrzeugkarosserie auf, so dass sich die Motorhaube ohne die Schließvorrichtung über die vorgesehene Geschlossenposition hinaus in Richtung der Fahrzeugkarosserie bewegen und gegebenenfalls auf die Fahrzeugkarosserie aufschlagen könnte.As a rule, the engine hood in the intended closed position on the inside is at a fixed distance from the adjacent vehicle body, so that the engine hood could move beyond the intended closed position in the direction of the vehicle body and possibly hit the vehicle body without the locking device.

Die Sicherungsposition weist in der Regel einen Abstand von der vorgesehenen Geschlossenposition in Richtung der vorgesehenen Geöffnetposition auf, also in Richtung einer Öffnungsbewegung, dass eine Hand nur flach von außen zwischen die Motorhaube und die Fahrzeugkarosserie hineingesteckt werden kann. Nur flach meint, dass die Handfläche parallel zur Motorhaube orientiert ist und/oder eine quer dazu gehaltene Hand nicht zwischen die Motorhaube und die Fahrzeugkarosserie hineingesteckt werden kann.The securing position is generally at a distance from the intended closed position in the direction of the intended open position, i.e. in the direction of an opening movement that a hand can only be inserted flat from the outside between the engine hood and the vehicle body. Just flat means that the palm of the hand is oriented parallel to the bonnet and / or a hand held across it cannot be inserted between the bonnet and the vehicle body.

Der Schlosshalter führt beim Schließen der Motorhaube eine Schließbewegung ausgehend von der vorgesehenen Geöffnetposition in Richtung der vorgesehenen Geschlossenposition aus, also in Schließbewegungsrichtung, die in den Figuren mit einem Pfeil gekennzeichnet ist.When the engine hood is closed, the lock holder executes a closing movement starting from the intended open position in the direction of the intended closed position, that is to say in the closing movement direction, which is indicated by an arrow in the figures.

Die Schließbewegung verläuft grundsätzlich entlang einer definierten und/oder geführten Bewegungsbahn, wobei der in der Regel als eine solche Führung z.B. das Drehlager insbesondere der Motorhaube dient.The closing movement basically runs along a defined and / or guided movement path, with the pivot bearing, in particular the engine hood, generally serving as such a guide.

Eine Öffnungsbewegung und eine Schließbewegung sind entgegengesetzte Bewegungen, also Bewegungen in die entgegengesetzte Richtung, entlang derselben Bewegungsbahn. Die Öffnungsbewegung und Schließbewegung sind grundsätzlich beide eine Relativbewegung zwischen dem Schlosshalter und der Schließvorrichtung. Denn der Schlosshalter kann sowohl an der Motorhaube als auch an der in einer Geschlossenposition angrenzenden Fahrzeugkarosserie angebracht sein oder umgekehrt. Entsprechend kann die Schließvorrichtung sowohl an der Fahrzeugkarosserie oder der Motorhaube angebracht sein.An opening movement and a closing movement are opposite movements, i.e. movements in the opposite direction along the same path of movement. The opening movement and the closing movement are basically both a relative movement between the lock holder and the locking device. This is because the lock holder can be attached both to the engine hood and to the adjacent vehicle body in a closed position, or vice versa. Correspondingly, the locking device can be attached both to the vehicle body or to the engine hood.

In einer Ausführungsform ist die Schließvorrichtung so beschaffen, dass bei einem Schließvorgang nur bei übermäßig großer Schließgeschwindigkeit die Schließbewegung des Schlosshalters an der vorgesehenen Geschlossenposition des Schlosshalters durch die Barriere begrenzt wird.In one embodiment, the locking device is designed in such a way that, during a closing process, the closing movement of the lock holder at the intended closed position of the lock holder is limited by the barrier only at an excessively high closing speed.

Ein geringer Verschleiß der Barriere und somit eine lange Lebenszeit der Schließvorrichtung kann so ermöglicht werden.A low wear of the barrier and thus a long service life of the locking device can thus be made possible.

Bei einem normalen Schließvorgang wird die Motorhaube mit seinem Eigengewicht und/oder einer geringen manuellen oder automatischen Zusatzkraft aus der angehobenen Geöffnetposition fallen gelassen und/oder in Schließbewegungsrichtung beschleunigt. Die Schließbewegung des Schlosshalters relativ zur Schließvorrichtung wird durch das Auftreffen auf den Fanghaken und dessen Verdrängung durch ein Verschwenken sowie durch eine Öffnungsfeder für die Motorhaube infolge der Reibungskräfte und/oder Kraft der Fanghakenfeder abgebremst. Beim Auftreffen des Schlosshalters auf die Drehfalle bzw. bei der Aufnahme in dem Drehfalleneinlaufschlitz der Drehfalle ist die Schließgeschwindigkeit des Schlosshalters bei einem normalen Schließvorgang nur noch so gering, dass vorzugsweise bis zum Erreichen der vorgesehen Geschlossenposition des Schlosshalters die kinetische Energie durch die Öffnungsfeder und/oder die Drehfallenfeder absorbiert wird. Die Drehfallenfeder ist grundsätzlich in Öffnungsrichtung der Drehfalle vorgespannt.During a normal closing process, the engine hood is dropped from the raised open position with its own weight and / or a small additional manual or automatic force and / or accelerated in the closing direction of movement. The closing movement of the lock holder relative to the locking device is due to the impact on the catch hook and its displacement by pivoting and by an opening spring for the engine hood braked as a result of the frictional forces and / or force of the catch hook spring. When the lock holder hits the rotary latch or when it is received in the rotary latch inlet slot, the closing speed of the lock holder during a normal closing process is only so low that the kinetic energy through the opening spring and / or preferably until the intended closed position of the lock holder is reached the torsion latch spring is absorbed. The rotary latch spring is basically pretensioned in the opening direction of the rotary latch.

Insbesondere wird bei einem normalen Schließvorgang ohne übermäßig große Schließgeschwindigkeit die Schließbewegung des Schlosshalters durch eine Öffnungsfeder und/oder Drehfallenfeder an der vorgesehenen Geschlossenposition begrenzt.In particular, during a normal closing process without an excessively high closing speed, the closing movement of the lock holder is limited by an opening spring and / or rotary latch spring at the intended closed position.

An einer Position begrenzen meint, dass wenn der Schlosshalter bei Ausführen einer Bewegung in eine Bewegungsrichtung die Position erreicht, die Bewegung des Schlosshalters in dieser Bewegungsrichtung gestoppt, also begrenzt, wird.Limiting at a position means that when the lock holder reaches the position when executing a movement in one direction of movement, the movement of the lock holder in this direction of movement is stopped, that is to say limited.

Im Falle der Barriere geschieht diese Begrenzung der Bewegung vorzugsweise durch Anschlagen. Dies gilt insbesondere ebenfalls für die Begrenzung der Öffnungsbewegung durch den Fanghaken an der Sicherungsposition und/oder für die Begrenzung des Abtauchens durch einen Abtauchanschlag an der Abtauchposition.In the case of the barrier, this limitation of movement is preferably done by striking. This also applies in particular to the limitation of the opening movement by the catch hook at the securing position and / or for the limitation of submersion by a submersion stop at the submersion position.

Im Falle eines Schließvorgangs mit nicht übermäßig großer Schließgeschwindigkeit, bei dem die Schließbewegung des Schlosshalters an der vorgesehenen Geschlossenposition durch die Öffnungsfeder und/oder Drehfallenfeder begrenzt wird, erfolgt zwar ein Stoppen der Schließbewegung an der Geschlossenposition, jedoch kann es zu einem Nachfedern oder vorübergehenden Nachgeben der Öffnungsfeder und/oder der Drehfallenfeder kommen, insbesondere derart, dass die Drehfalle kurzzeitig über die Hauptrastposition hinaus entgegen der Kraft der Öffnungsfeder und/oder der Drehfallenfeder verschwenkt, also entgegen den Uhrzeigersinn.In the case of a closing process with a not excessively high closing speed, in which the closing movement of the lock holder at the intended closed position is limited by the opening spring and / or rotary latch spring, the closing movement is stopped at the closed position, but this can result in rebounding or temporary yielding of the Opening spring and / or the rotary latch spring come, in particular in such a way that the rotary latch briefly beyond the main locking position against the force of the Opening spring and / or the rotary latch spring pivoted, that is, counterclockwise.

Ein solches Verschwenken beträgt jedoch höchstens 25°, bevorzugt höchstens 15°, besonders bevorzugt höchstens 5°. Ein Schaden an der Motorhaube kann bei einem solchen Verschwenken der Drehfalle ausgeschlossen werden.However, such a pivoting is at most 25 °, preferably at most 15 °, particularly preferably at most 5 °. If the rotary latch is pivoted in this way, damage to the engine hood can be ruled out.

Vorzugsweise darf ein solches Verschwenken nicht zum Anschlagen gegen einen Abtauchanschlag führen. Denn beim Auftreffen des Schlosshalters auf den Abtauchanschlag bei einem Schließvorgang könnte es durch ein Durchfedern der Motorhaube zu Beschädigungen an der Motorhaube kommen.Preferably, such a pivoting must not lead to impact against a submersible stop. Because when the lock holder hits the submersible stop during a closing process, the bonnet could be damaged by the bonnet deflecting.

Insbesondere wird bei einem normalen Schließvorgang der Schlosshalter durch die Öffnungsfeder und/oder Drehfallenfeder derart an der Geschlossenposition begrenzt, dass es zu keiner Beschädigung der Motorhaube kommen kann.In particular, during a normal closing process, the lock holder is limited in the closed position by the opening spring and / or rotary latch spring in such a way that the engine hood cannot be damaged.

Bei einem normalen Schließvorgang tritt also keine übermäßig große Schließgeschwindigkeit auf, die zu einer Beschädigung der Motorhaube führen könnte. Die Schließgeschwindigkeit bleibt stets unterhalb einer Schwellgewindigkeit.During a normal closing process, there is therefore no excessively high closing speed which could lead to damage to the engine hood. The closing speed always remains below a threshold speed.

Bei einem Schließvorgang mit übermäßig großer Schließgeschwindigkeit wird die Schwellgewindigkeit überschritten. Grund hierfür ist meist eine Fehlbenutzung, bei der die Motorhaube mit übermäßig großer Kraft zugeschlagen wird, was zu einer übermäßig großen Schließgeschwindigkeit des Schlosshalters führt.In the event of a closing process with an excessively high closing speed, the threshold speed is exceeded. The reason for this is usually incorrect use, in which the engine hood is slammed shut with excessive force, which leads to an excessive closing speed of the lock holder.

Würde der Schlosshalter mit übermäßig großer Schließgeschwindigkeit - wie oben beschrieben bei einem normalen Schließvorgang - unmittelbar auf das Gesperre treffen, so würde die Kraft der Öffnungsfeder und/oder Drehfallenfeder nicht ausreichen, um die Schließbewegung des Schlosshalters an der vorgesehenen Geschlossenposition derart zu begrenzen, dass ein Auslenken und Verschwenken der Drehfalle entgegen der Kraft der Drehfallenfeder kleiner als 25°, bevorzugt kleiner 15°, besonders bevorzugt kleiner 5° betragen würde. Der Schlosshalter könnte zudem mit voller Wucht gegen den Abtauchanschlag stoßen und die Motorhaube würde durchfedern. Ein Schaden an der Motorhaube könnte in beiden Fällen nicht mehr ausgeschlossen werden.If the lock holder were to hit the locking mechanism directly at an excessively high closing speed - as described above during a normal closing process - the force of the opening spring and / or rotary latch spring would not be sufficient to limit the closing movement of the lock holder at the intended closed position in such a way that a Deflection and pivoting of the rotary latch against the force of the rotary latch spring would be less than 25 °, preferably less than 15 °, particularly preferably less than 5 °. The lock holder could also hit the submersible stop with full force and the bonnet would deflect. In both cases, damage to the bonnet could no longer be ruled out.

In dem Moment des Begrenzens der Schließbewegung des Schlosshalters mit übermäßig großer Schließgeschwindigkeit an der vorgesehenen Geschlossenposition des Schlosshalters durch die Barriere befindet sich die Schließvorrichtung grundsätzlich nicht in der Endstellung.At the moment when the closing movement of the lock holder is limited at an excessively high closing speed at the intended closed position of the lock holder by the barrier, the locking device is fundamentally not in the end position.

Dass der Schlosshalter nur bei einer Überlast über die vorgesehene Geschlossenposition hinaus abtauchen kann, betrifft insbesondere nicht den Schließvorgang, sondern vorzugsweise nur einen für ein Fahren des Kraftfahrzugs geeigneten Betriebszustand, also wenn die Motorhaube geschlossen ist, das Gesperre sich in der Hauptrastposition befindet und/oder sich der Fanghaken in einer Endstellung befindet.The fact that the lock holder can only descend beyond the intended closed position in the event of an overload does not particularly affect the closing process, but preferably only an operating state suitable for driving the motor vehicle, i.e. when the engine hood is closed, the locking mechanism is in the main detent position and / or the catch hook is in an end position.

Last meint eine Kraft, die in der Geschlossenstellung von dem Schlosshalter auf die Drehfalle ausgeübt wird, um die Drehfalle entgegen der Kraft der Drehfallenfeder zu verschwenken, also entgegen dem Uhrzeigersinn. Last meint also eine Kraft in Richtung eines Abtauchens.Load means a force which is exerted by the lock holder on the rotary latch in the closed position in order to pivot the rotary latch against the force of the rotary latch spring, that is to say counterclockwise. So load means a force in the direction of a submergence.

Überlast meint eine Last oder Kraft oberhalb einer Schwelllast. Das ruhende Eigengewicht der Motorhaube und/oder die Kraft der Sperrklinkenfeder vermögen keine Überlast zu erzeugen.Overload means a load or force above a threshold load. The dead weight of the bonnet and / or the force of the pawl spring cannot generate an overload.

Bei einem Fußgänger-Crash wird jedoch durch das Gewicht und den Aufprall des Fußgängers auf die Motorhaube eine Überlast, also eine Last über der Schwelllast auf den Schlosshalter übertragen.In the event of a pedestrian crash, however, the weight and impact of the pedestrian on the engine hood transfer an overload, that is to say a load above the threshold load, to the lock holder.

Insbesondere ist die Schwelllast gleich oder größer als die Kraft der Öffnungsfeder und/oder Drehfallenfeder - gegebenenfalls reduziert um die ruhende Gewichtskraft der Motorhaube -, also die auf den Schlosshalter in der Hauptrastposition und Geschlossenposition wirkenden Kräfte in Richtung Geöffnetposition, welche durch die verrastete Sperrklinke über die Schlossplatte 14 absorbiert wird, um ein mechanisches Gleichgewicht und damit eine gleichbleibende Lage des Schlosshalters in der Geschlossenposition zu gewährleisten.In particular, the threshold load is equal to or greater than the force of the opening spring and / or rotary latch spring - possibly reduced by the static weight force the bonnet - i.e. the forces acting on the lock holder in the main detent position and closed position in the direction of the open position, which is absorbed by the latched pawl via the lock plate 14 in order to ensure mechanical equilibrium and thus a constant position of the lock holder in the closed position.

Über die vorgesehene Geschlossenposition hinaus abtauchen meint, dass sich die Schließbewegung des Schlosshalters über die vorgesehene Geschlossenposition hinaus fortgesetzt.Descending beyond the intended closed position means that the closing movement of the lock holder continues beyond the intended closed position.

Abtauchen meint eine Bewegung des Schlosshalters insbesondere entlang der Bewegungsbahn beginnend an der vorgesehenen Geschlossenposition. Die Richtung der Abtauchbewegung ist der Öffnungsrichtung entgegengesetzt. Ein Abtauchen des Schlosshalters bedeutet ein Verursachen einer Auslenkung der Drehfalle 1 über die Hauptrastposition hinaus.Diving means a movement of the lock holder, in particular along the movement path, starting at the intended closed position. The direction of the downward movement is opposite to the opening direction. Diving the lock holder means causing a deflection of the rotary latch 1 beyond the main locking position.

Solang der Schlosshalter beim Abtauchen nicht gegen den Abtauchanschlag schlägt, ist eine Beschädigung der Motorhaube grundsätzlich ausgeschlossen.As long as the lock holder does not hit the submersible stop when diving, damage to the bonnet is fundamentally excluded.

Insbesondere ist der maximale Abtauchweg, vorzugsweise mindestens 15 mm und/oder höchstens 25 mm, entlang der Bewegungsbahn von der vorgesehenen Geschlossenposition zur Abtauchposition so ausgelegt, dass die Motorhaube in der Regel auch bei einem Fußgängeraufprall nicht hinreichend beschleunigt wird, um selbst bei einem Anschlagen des Schlosshalters auf den Abtauchanschlag eine Beschädigung der Motorhaube nach sich zu ziehen.In particular, the maximum immersion path, preferably at least 15 mm and / or at most 25 mm, along the path of movement from the intended closed position to the immersion position is designed in such a way that the engine hood is usually not accelerated enough even in the event of a pedestrian impact to be able to even hit the Lock holder on the plunge stop to cause damage to the bonnet.

Die Erfindung wird nachfolgend anhand von in den Figuren schematisch dargestellten Ausführungsbeispielen näher erläutert und mit Bezug zu den Figuren die Ausführungsformen sowie zusätzliche vorteilhafte Ausgestaltungen näher beschrieben.The invention is explained in more detail below on the basis of exemplary embodiments shown schematically in the figures, and the embodiments and additional advantageous configurations are described in more detail with reference to the figures.

Es zeigen:

  • Figur 1: Schließvorrichtung zu Beginn eines Schließvorgangs
  • Figur 2: Schließvorrichtung bei Eintreten des Schlosshalters in den Einlaufschlitz
  • Figur 3: Schließvorrichtung bei Passieren der Verengung durch den Schlosshalter
  • Figur 4: Schließvorrichtung bei Anschlagen eines Schlosshalters mit übermäßig großer Schließgeschwindigkeit auf die Barriere
  • Figur 5: Schließvorrichtung in Endstellung
  • Figur 6: Schließvorrichtung mit durch Überlast abgetauchtem Schlosshalter
  • Figur 7: Schließvorrichtung in Endstellung mit eingeblendetem Gesperre
Show it:
  • Figure 1 : Closing device at the beginning of a closing process
  • Figure 2 : Locking device when the lock holder enters the inlet slot
  • Figure 3 : Closing device when passing the constriction through the lock holder
  • Figure 4 : Locking device when a lock holder hits the barrier at an excessively high closing speed
  • Figure 5 : Closing device in end position
  • Figure 6 : Locking device with lock holder submerged due to overload
  • Figure 7 : Locking device in end position with faded in lock

Die Bezugszeichen der Figur 1 gelten auch für alle übrigen Figuren und wurden dort lediglich der Übersichtlichkeit halber ausgeblendet.
Die Figuren 1 bis 7 zeigen ein Ausführungsbeispiel einer erfindungsgemäßen Schließvorrichtung. In den Figuren 1 bis 6 sind die Drehfalle 1 und die Sperrklinke 2 sowie die Schlossplatte 14 ausgeblendet. Figur 7 zeigt die Figur 5 mit eingeblendeter Drehfalle 1 und Sperrklinke 2 in Hauptrastposition sowie die Schlossplatte 14, d.h. eine Platte zum Anbringen der Drehfalle 1 und Sperrklinke 2, vorzugsweise mit einem Schlossplatteneinlaufschlitz für den Schlosshalter, der ebenfalls in Figur 3 zu erkennen ist.The reference symbols of the Figure 1 also apply to all other figures and have only been hidden there for the sake of clarity.
The Figures 1 to 7 show an embodiment of a locking device according to the invention. In the Figures 1 to 6 the rotary latch 1 and the pawl 2 and the lock plate 14 are hidden. Figure 7 show the Figure 5 with overlaid rotary latch 1 and pawl 2 in the main locking position and the lock plate 14, ie a plate for attaching the rotary latch 1 and pawl 2, preferably with a lock plate inlet slot for the lock holder, which is also in Figure 3 can be seen.

Die Drehfalle 1 ist um die Drehfallenachse 15 drehbar gelagert. Die Drehfalle 1 ist insbesondere durch eine nicht dargestellte Drehfallenfeder im Uhrzeigersinn vorgespannt.The rotary latch 1 is rotatably mounted about the rotary latch axis 15. The rotary latch 1 is biased in a clockwise direction in particular by a rotary latch spring (not shown).

Die Sperrklinke 2 ist um die Sperrklinkenachse 16 drehbar gelagert. Die Sperrklinke 2 ist insbesondere durch eine nicht dargestellte Sperrklinkenfeder im Uhrzeigersinn vorgespannt.The pawl 2 is mounted rotatably about the pawl axis 16. The pawl 2 is biased in a clockwise direction in particular by a pawl spring, not shown.

Der Fanghaken 3 ist um die Fanghakenachse 17 drehbar gelagert. Der Fanghaken 3 ist insbesondere durch eine nicht dargestellte Fanghakenfeder im entgegen dem Uhrzeigersinn vorgespannt.The catch hook 3 is mounted rotatably about the catch hook axis 17. The catch hook 3 is biased in the counterclockwise direction in particular by a catch hook spring (not shown).

Eine Öffnungsfeder, die ebenfalls in den Figuren nicht gezeigt ist, drückt die Motorhaube und damit den Schlosshalter ausgehend von der Geschlossenstellung in Richtung Geöffnetstellung.An opening spring, which is also not shown in the figures, presses the engine hood and thus the lock holder starting from the closed position in the direction of the open position.

Insbesondere hat der Fanghaken 3 eine Hakenform, vorzugsweise mit der Form einer "1". Die obere Schräge 13 dient dem Verschwenken infolge eines darauf auftreffenden und entlanggleitenden Schlosshalters bei einer Schließbewegung, wie in Figur 1 dargestellt.In particular, the catch hook 3 has a hook shape, preferably with the shape of a "1". The upper slope 13 is used for pivoting as a result of a lock holder hitting it and sliding along it during a closing movement, as in FIG Figure 1 shown.

Auf der gegenüberliegenden Seite der Schräge 13 dient die v-förmige Vertiefung als Sicherungsanschlag und/oder Sicherungsraststelle für den Schlosshalter nach dem Verlassen des Gesperres.On the opposite side of the slope 13, the V-shaped recess serves as a safety stop and / or safety catch point for the lock holder after leaving the locking mechanism.

Insbesondere stellt die Hakenform einen von zwei U-förmig verbundenen Schenkel dar, wobei zwischen beiden Schenkeln der Einlaufschlitz 19 des Fanghakens 3 verläuft. Vorzugsweise ist bildet das Tal des Einlaufschlitzes 19, also im Bereich des Bodens der U-förmig verbundenen Schenkel eine Vertiefung 12 zum Abtauchen. Vorzugsweise wird das Abtauchen begrenzt durch einen Abtauchanschlag insbesondere am Boden der Vertiefung.In particular, the hook shape represents one of two legs connected in a U-shape, the inlet slot 19 of the catch hook 3 running between the two legs. The valley of the inlet slot 19, that is to say in the area of the bottom of the legs connected in a U-shape, preferably forms a recess 12 for immersion. The submersion is preferably limited by a submersion stop, in particular at the bottom of the recess.

In einer Ausführungsform erfolgt das Begrenzen der Schließbewegung des Schlosshalters 4 bei übermäßig großer Schließgeschwindigkeit durch ein Anschlagen gegen die Barriere 6 und/oder der Schlosshalter 4 befindet sich bei dem Anschlagen gegen die Barriere 6 in der vorgesehenen Geschlossenposition des Schlosshalters 4.In one embodiment, the closing movement of the lock holder 4 is limited in the event of an excessively high closing speed by striking against the barrier 6 and / or the lock holder 4 is in the intended closed position of the lock holder 4 when it hits the barrier 6.

Die vorgesehene Geschlossenposition ist wie die Abtauchposition, Sicherungsposition und Geöffnetposition eine Position auf der Bewegungsbahn 5 des Schlosshalters.The envisaged closed position, like the immersion position, safety position and open position, is a position on the movement path 5 of the lock holder.

Dadurch, dass der Schlosshalter 4 gegen die Barriere 6 aufschlägt, wird der Schlosshalter 4 gleich in die Position zum Verrasten des Gesperres gebracht und dort gehalten. Eine Beschädigung des Gesperres kann so vermieden werden. Ferner kann lediglich durch ein Verschwenken des Fanghakens 3 die Vertiefung 12 zur Ermöglichung eines Abtauchens bei Überlast für den Schlosshalter 4 bereitgestellt werden.Because the lock holder 4 strikes against the barrier 6, the lock holder 4 is immediately brought into the position for locking the locking mechanism and held there. Damage to the locking mechanism can thus be avoided. Furthermore, only by pivoting the catch hook 3, the recess 12 can be provided for the lock holder 4 to enable it to submerge in the event of an overload.

In einer Ausführungsform befindet sich das Gesperre bei Anschlagen des Schlosshalters 4 gegen die Barriere 6 und/oder in Endstellung der Schließvorrichtung in Hauptrastposition.In one embodiment, the locking mechanism is in the main locking position when the lock holder 4 strikes against the barrier 6 and / or in the end position of the locking device.

Ein besonders zuverlässiges Aufnehmen und Halten des Schlosshalters 4 auch bei übermäßiger Schließgeschwindigkeit kann so ermöglicht werden.A particularly reliable picking up and holding of the lock holder 4 even with excessive closing speed can thus be made possible.

In einer Ausführungsform weist der Fanghaken 3 eine Fanghakenfeder auf, die den Fanghaken 3 in Richtung der Endstellung vorspannt.In one embodiment, the catch hook 3 has a catch hook spring which biases the catch hook 3 in the direction of the end position.

In Richtung Endstellung vorspannen meint, dass die Fanghakenfeder ein Drehmoment um die Fanghakenachse 17 entgegen dem Uhrzeigersinn auf den Fanghaken 3 überträgt.Preloading in the direction of the end position means that the catch hook spring transmits a torque about the catch hook axis 17 counterclockwise to the catch hook 3.

Durch Einstellen der Federkraft kann so die Schwellgewindigkeit beeinflusst werden, bei der ein Schlosshalter gegen die Barriere anschlägt. Ebenfalls kann durch die Fanghakenfeder besonders schnell und zuverlässig die Vertiefung 12 unterhalb eines gegen die Barriere angeschlagenen Schlosshalters 4 bewegt werden, damit der Schlosshalter 4 bei Überlast abtauchen kann.By adjusting the spring force, the threshold speed at which a lock holder strikes the barrier can be influenced. The catch hook spring can also be used to move the recess 12 particularly quickly and reliably below a lock holder 4 that is struck against the barrier, so that the lock holder 4 can submerge in the event of an overload.

In einer Ausführungsform weist der Fanghaken 3 einen Einlaufschlitz 19 zum Aufnehmen des Schlosshalters 4 auf.In one embodiment, the catch hook 3 has an inlet slot 19 for receiving the lock holder 4.

Der Einlaufschlitz 19 des Fanghakens 3 ermöglicht das Umsetzen eines sehr kompakten Mechanismus zur Vermeidung von Motorhaubenschäden infolge von Fehlbenutzung bei gleichzeitiger Fußgängersicherung mittels einer Abtauchmöglichkeit für den Schlosshalter bei Überlast.The inlet slot 19 of the catch hook 3 enables the implementation of a very compact mechanism for avoiding engine hood damage as a result of incorrect use while at the same time securing pedestrians by means of an immersion option for the lock holder in the event of overload.

In einer Ausführungsform ist die Barriere 6 ein Oberflächenabschnitt des Einlaufschlitzes 19 oder die Barriere 6 ist mit dem Einlaufschlitz 19 stoffschlüssig und/oder bewegungsfest verbunden ist.In one embodiment, the barrier 6 is a surface section of the inlet slot 19 or the barrier 6 is connected to the inlet slot 19 in a materially bonded manner and / or in a fixed manner.

Ein Oberflächenabschnitt ist in der Regel einstückig mit dem Einlaufschlitz 19 und/oder dem Fanghaken 3 ausgeführt, d.h. aus einem Materialstück hergestellt, z.B. aus einem einzigen Blech gemeinsam als zusammenhängendes Bauteil ausgestanzt.A surface section is usually made in one piece with the inlet slot 19 and / or the catch hook 3, i.e. made from one piece of material, e.g. stamped out together as a coherent component from a single sheet metal.

Eine stoffschlüssig verbundene Barriere kann angeschweißt, angelötet oder angeklebt sein.A materially bonded barrier can be welded, soldered or glued on.

Eine bewegungsfest mit dem Einlaufschlitz 19 verbundene Barriere 6 hat relativ zu dem Einlaufschlitz 19 keinen Freiheitsgrad der Bewegung. Eine bewegungsfeste Verbindung kann durch eine formschlüssige und/oder kraftschlüssige Verbindung hergestellt werden, wie beispielsweise eine Clipverbindung.A barrier 6 that is fixedly connected to the inlet slot 19 has no degree of freedom of movement relative to the inlet slot 19. A motion-proof connection can be established by a form-fitting and / or force-fitting connection, such as a clip connection.

Alle Alternativen dieser Ausführungsform haben den Vorteil, dass ein zuverlässiges lastabhängiges Begrenzen der Schließbewegung des Schlosshalters an der vorgesehenen Geschlossenposition übermäßig großer Schließgeschwindigkeit erzielt werden kann.All alternatives of this embodiment have the advantage that a reliable load-dependent limitation of the closing movement of the lock holder at the intended closed position can be achieved at an excessively high closing speed.

In einer Ausführungsform umfasst der Einlaufschlitz 19 eine Vertiefung 12 für das Abtauchen des Schlosshalters 4 und/oder die Vertiefung 12 für das Abtauchen des Schlosshalters 4 ist ein Konturabschnitt des Einlaufschlitzes 19.In one embodiment, the inlet slot 19 comprises a recess 12 for immersing the lock holder 4 and / or the recess 12 for immersing the lock holder 4 is a contour section of the inlet slot 19.

Eine Vertiefung ist ein besonders einfach herstellbares Mittel zur Ermöglichung eines Abtauchens, besonders wenn als Konturabschnitt des Einlaufschlitzes 19 ausgeführt.A recess is a means that can be produced in a particularly simple manner to enable immersion, particularly if it is designed as a contour section of the inlet slot 19.

Konturabschnitt meint ein begrenzter Oberflächenabschnitt der Kontur des Einlaufschlitzes, der in der Regel einstückig z.B. durch Stanzen hergestellt wurde. Insbesondere ist die Vertiefung 12 U-förmig ausgeführt, wobei die eine Seitenwand eine Kante mit der Barriere 6 oder dessen Oberflächenabschnitt bildet, insbesondere unter einem Winkel von mindestens 80° und/oder höchstens 90°. Die andere Seitenwand ist in Endstellung parallel zur Bewegungsbahn 5 orientiert und entspricht vorzugsweise der zweite Seitenwand 9 des Einlaufschlitzes 19, so dass der Schlosshalter geradlinig abtauchen kann.Contour section means a limited surface section of the contour of the inlet slot, which is usually produced in one piece, for example by punching. In particular, the recess 12 is U-shaped, one side wall forming an edge with the barrier 6 or its surface section, in particular at an angle of at least 80 ° and / or at most 90 °. In the end position, the other side wall is oriented parallel to the movement path 5 and preferably corresponds to the second side wall 9 of the inlet slot 19, so that the lock holder can descend in a straight line.

In einer Ausführungsform sind die Barriere 6 und die Vertiefung 12 nebeneinander angeordnet und/oder unmittelbar aneinander angrenzen.In one embodiment, the barrier 6 and the recess 12 are arranged next to one another and / or directly adjoin one another.

Dies ermöglicht einen reduzierten Schwenkweg des Fanghakens 3 zur Bereitstellung der Vertiefung für einen gegen die Barriere angeschlagenen Schlosshalter 4.This enables a reduced pivoting path of the catch hook 3 to provide the recess for a lock holder 4 attached to the barrier.

In einer Ausführungsform liegt in der Endstellung der Schließvorrichtung der Schlosshalter 4 an einer Seitenwand des Einlaufschlitzes 19 anliegt, insbesondere an einer zweiten Seitenwand 9, und das Gesperre befindet sich in der Hauptrastposition.In one embodiment, in the end position of the locking device, the lock holder 4 rests against a side wall of the inlet slot 19, in particular against a second side wall 9, and the locking mechanism is in the main locking position.

Die Endstellung kann somit durch einen Schlosshalter 4, der durch das sich in Hauptrast befindliche Gesperre verrastet ist und durch die Fanghakenfeder gegen die Seitenwand gedrückt wird, definiert werden.The end position can thus be defined by a lock holder 4, which is locked by the locking mechanism located in the main notch and is pressed against the side wall by the catch hook spring.

Ein barrierefreies Abtauchen bei Überlast kann so gewährleistet werden.Barrier-free diving in the event of an overload can thus be guaranteed.

In einer Ausführungsform weist der Einlaufschlitz 19 eine Verengung 7 für ein passgenaues Durchlassen des Schlosshalters 4 auf.In one embodiment, the inlet slot 19 has a constriction 7 for a precisely fitting passage of the lock holder 4.

Passgenaues Durchlassen meint, dass die Verengung 7 einen Durchgang für den Schlosshalter 4 bereitstellt, dessen Größe der Größe des Schlosshalters zuzüglich einer Spielpassung entspricht, so dass der Schlosshalter 4 mit Spiel gerade durch den Durchgang passt.Exactly fitting means that the constriction 7 provides a passage for the lock holder 4, the size of which corresponds to the size of the lock holder plus a clearance fit, so that the lock holder 4 just fits through the passage with play.

Durch die Verengung 7 wird der Fanghaken 3 bei passieren, also durchqueren, des Schlosshalters 4 in eine definierte Drehstellung verschwenkt.Through the constriction 7, the catch hook 3 is swiveled into a defined rotational position when the lock holder 4 is passed, ie traversed.

Dies ermöglicht durch Einstellen der Kraft der Fanghakenfeder, des Abstands zwischen der Verengung 7 und der Barriere 6 und/oder der Breite der Barriere 6 quer zur Bewegungsbahn 5 in dieser Stellung des Fanghakens 3 die Schwellgeschwindigkeit festzulegen.This makes it possible to set the swelling speed by adjusting the force of the catch hook spring, the distance between the constriction 7 and the barrier 6 and / or the width of the barrier 6 transversely to the movement path 5 in this position of the catch hook 3.

In einer Ausführungsform erfolgt die Schließbewegung des Schlosshalters 4 entlang einer definierten Bewegungsbahn 5, wobei die Bewegungsbahn 5 die Barriere 6 und/oder eine Fanghakenachse 17 des Fanghakens 3 schneidet, wenn der Schlosshalter 4 sich in der Verengung 7 befindet.In one embodiment, the closing movement of the lock holder 4 takes place along a defined movement path 5, the movement path 5 intersecting the barrier 6 and / or a catch hook axis 17 of the catch hook 3 when the lock holder 4 is located in the constriction 7.

Die Bewegungsbahn 5 schneiden meint eine Geraden entlang der Bewegungsbahn 5 schneiden oder eine Bewegungsbahn 5 ohne jegliche Barrieren oder Anschläge.Cutting the movement path 5 means cutting a straight line along the movement path 5 or a movement path 5 without any barriers or stops.

Dadurch, die Bewegungsbahn 5 die Barriere 6 und/oder eine Fanghakenachse 17 des Fanghakens 3 schneidet, wenn der Schlosshalter 4 sich in der Verengung 7 befindet, kann die Energie des Anschlagens des Schlosshalters 4 bei übermäßiger Schließgeschwindigkeit gegen die Barriere 6 durch die Fanghakenfeder 17 aufgenommen werden, ohne ein Drehmoment in den Fanghaken 3 zu induzieren und diesen somit zu verschwenken.Because the movement path 5 intersects the barrier 6 and / or a catch hook axis 17 of the catch hook 3 when the lock holder 4 is located in the constriction 7, the energy of striking the lock holder 4 at excessive closing speed against the barrier 6 can be absorbed by the catch hook spring 17 without inducing a torque in the catch hook 3 and thus pivoting it.

In einer Ausführungsform ist die Schließvorrichtung so beschaffen, dass nachdem der Schlosshalter 4 die Verengung 7 bei einem Schließvorgang passiert hat, die Fanghakenfeder den Fanghaken 3 in Richtung der Endstellung verschwenkt.In one embodiment, the locking device is designed in such a way that after the lock holder 4 has passed the constriction 7 during a closing process, the catch hook spring swivels the catch hook 3 in the direction of the end position.

Dies ermöglicht sowohl die Bereitstellung der Vertiefung 12 zum Abtauchen unterhalb eines gegen die Barriere 6 anschlagenden Schlosshalters als auch ein Begrenzen der Schließbewegung eines Schlosshalters unterhalb der Geschwindigkeitsschwelle durch das Gesperre.This enables both the provision of the recess 12 for immersion below a lock holder abutting against the barrier 6 and a limitation of the closing movement of a lock holder below the speed threshold by the locking mechanism.

In einer Ausführungsform ist die Schließvorrichtung so beschaffen, dass bei einem Schließvorgang insbesondere nach dem Passieren der Verengung 7 ein Schlosshalters 4 mit übermäßig großer Schließgeschwindigkeit schneller die Barriere 6 erreicht, insbesondere also eine Strecke zwischen der Verengung 7 und der Barriere 6 überwindet, als der Fanghaken 3 in die Endstellung verschwenken kann.In one embodiment, the locking device is designed in such a way that during a closing process, especially after passing through the constriction 7, a lock holder 4 with an excessively high closing speed reaches the barrier 6 faster, in particular overcomes a distance between the constriction 7 and the barrier 6 than the catch hook 3 can pivot into the end position.

Ein wirksamer Schutz der Motorhaube vor Beschädigungen infolge einer Fehlbenutzung beim Schließvorgang kann so ermöglicht werden.Effective protection of the engine hood from damage as a result of incorrect use during the closing process can thus be made possible.

In einer Ausführungsform ist die Schließvorrichtung so beschaffen, dass bei einem Schließvorgang insbesondere nach dem Passieren der Verengung 7 ein Schlosshalters 4 mit normaler Schließgeschwindigkeit durch das Verschwenken des Fanghakens 3 in die Endstellung noch vor Erreichen der vorgesehenen Geschlossenposition des Schlosshalters 4 gegen die Seitenwand des Einlaufschlitzes, insbesondere die zweite Seitenwand 9 anschlägt und/oder die Schließbewegung an der Geschlossenposition oberhalb der Vertiefung 12 insbesondere durch eine Kraft einer Öffnungsfeder und/oder einer Drehfallenfeder begrenzt wird.In one embodiment, the locking device is designed in such a way that during a closing process, in particular after passing the constriction 7, a lock holder 4 at normal closing speed by pivoting the catch hook 3 into the end position before the lock holder 4 reaches the intended closed position against the side wall of the inlet slot, in particular the second side wall 9 strikes and / or the closing movement is limited in the closed position above the recess 12 in particular by a force of an opening spring and / or a rotary latch spring.

Die Öffnungsfeder dient dem Anheben des Schlosshalters 4 in entgegengesetzter Richtung zur Abtauchbewegung.The opening spring is used to raise the lock holder 4 in the opposite direction to the plunging movement.

Eine Schließvorrichtung, die so beschaffen ist, dass bei einem Schließvorgang nur bei übermäßig großer Schließgeschwindigkeit die Schließbewegung des Schlosshalters 4 an der vorgesehenen Geschlossenposition des Schlosshalters 4 durch die Barriere 6 begrenzt wird, kann so ermöglicht werden.A locking device which is designed in such a way that, during a closing process, the closing movement of the lock holder 4 is limited by the barrier 6 at the intended closed position of the lock holder 4 only at an excessively high closing speed, can thus be made possible.

In einer Ausführungsform ist die Barriere 6 so beschaffen, dass sich die Barriere 6 planmäßig nicht plastisch verformt.In one embodiment, the barrier 6 is designed in such a way that the barrier 6 is not plastically deformed as planned.

In einer Ausführungsform ist die Schließvorrichtung so beschaffen, dass die Schließbewegung des Schlosshalters 4 bei Überlast an einer Abtauchposition durch einen Abtauchanschlag 10 des Fanghakens 3 begrenzt wird.In one embodiment, the locking device is designed in such a way that the closing movement of the lock holder 4 in the event of an overload at a submerged position is limited by a submerged stop 10 of the catch hook 3.

Durch den im Fanghaken integrierten Abtauchanschlag 10 können zusätzliche Teile eingespart werden. Zudem erlaubt der Abtauchanschlag 10 ein reproduzierbares Abtauchen mit definierten Abtauchweg. Ein Beschädigen der Motorhaube durch Kollision mit der angrenzenden Fahrzeugkarosserie kann so vermieden werden.The immersion stop 10 integrated in the catch hook enables additional parts to be saved. In addition, the descent stop 10 allows reproducible descent with a defined descent path. Damage to the bonnet due to a collision with the adjacent vehicle body can thus be avoided.

In einer weiteren Ausführungsform ist die Barriere im Fanghaken integriert, um oben genannte Vorteile zu erzielen.In a further embodiment, the barrier is integrated in the catch hook in order to achieve the advantages mentioned above.

Der Abtauchweg, also der Abstand zwischen der Abtauchposition und der vorgesehenen Geschlossenposition beträgt mindestens 10 mm, bevorzugt 14 mm, und/oder höchstens 20 mm, bevorzugt höchstens 16 mm. Ein wirkungsvoller Fußgängerschutz kann so erzielt werden.The immersion path, that is to say the distance between the immersion position and the intended closed position, is at least 10 mm, preferably 14 mm, and / or at most 20 mm, preferably at most 16 mm. Effective pedestrian protection can be achieved in this way.

Grundsätzlich ist der Eingang des Einlaufschlitzes 19 an der gegenüberliegenden Seite von dem Abtauchanschlag 10 und/oder der Fanghakendrehachse 17. Denn dadurch kann der Schlosshalter bei der Schließbewegung durch Verschwenken des Fanghakens 3 in den Einlaufschlitz 19 gelangen, was später noch genauer beschrieben wird.Basically, the entrance of the inlet slot 19 is on the opposite side of the submersion stop 10 and / or the catch hook rotation axis 17. Because this allows the lock holder to get into the inlet slot 19 during the closing movement by pivoting the catch hook 3, which will be described in more detail later.

In einer Ausführungsform sind eine erste Seitenwand 8 und/oder zweite Seitenwand 9 des Einlaufschlitzes 19 vorgesehen. Der Eingang des Einlaufschlitzes 19 verläuft vorzugsweise dreieckförmig, vorzugsweise mit einer Aufnahmeschräge 18, wobei lediglich eine der beiden Seitenwände, insbesondere die erste Seitenwand 8, sich abgewinkelt in Richtung der Barriere 6 zur Erzeugung der Dreiecksform erstreckt.In one embodiment, a first side wall 8 and / or a second side wall 9 of the inlet slot 19 are provided. The entrance of the inlet slot 19 is preferably triangular, preferably with a receiving bevel 18, only one of the two side walls, in particular the first side wall 8, extending at an angle in the direction of the barrier 6 to produce the triangular shape.

In einer Ausführungsform bildet die erste Seitenwand 8 in einem an die Barriere 6 angrenzenden Bereich gemeinsam mit der Barriere 6 eine L-Form aus. Insbesondere ist die Barriere mindestens so lang wie der Schlosshalter 4 breit und/oder höchstens doppelt so lang wie der Schlosshalter 4 breit.In one embodiment, the first side wall 8 forms an L-shape together with the barrier 6 in an area adjoining the barrier 6. In particular, the barrier is at least as long as the lock holder 4 wide and / or at most twice as long as the lock holder 4 wide.

In einer Ausführungsform ist nur eine Barriere 6 vorgesehen, wodurch ein besonders einfacher Mechanismus erzielt werden kann.In one embodiment, only one barrier 6 is provided, whereby a particularly simple mechanism can be achieved.

Insbesondere ist das Gesperre so beschaffen, dass die Sperrklinke 2 bei Überlast und Abtauchen des Schlosshalters 4 trotz des Verschwenkens der Drehfalle 1 in seiner Stellung bleibt oder gehalten wird, z.B. durch ein Haltemittel, so dass die Drehfalle 1 beim Zurückschwenken wieder mit der Sperrklinke 2 verrastet.In particular, the locking mechanism is designed so that the pawl 2 remains in its position or is held in its position when the lock holder 4 is overloaded and the lock holder 4 is submerged, e.g. by a retaining means, so that the pawl 1 engages with the pawl 2 again when it is pivoted back .

Alternativ kann auch ein Mitdrehen der Sperrklinke 2 mit der infolge des Abtauchens des Schlosshalters 4 verschwenkenden Drehfalle 1 unter Aufrechterhaltung der Verrastung vorgesehen werden.Alternatively, the pawl 2 can also be rotated with the rotary latch 1 pivoting as a result of the lock holder 4 being submerged, while maintaining the latching.

Im Folgenden wird exemplarisch ein Öffnungsvorgang und Schließvorgang sowie ein Abtauchen bei einem Fußgängerunfall beschrieben.In the following, an opening process and a closing process as well as diving in a pedestrian accident are described as examples.

Üblicherweise ist an der Fahrzeugkarosserie, der durch die Motorhaube abgedeckt wird, ein mittels eines Bowdenzuges oder dergleichen auslösbarer Auslösehebel vorgesehen, welcher die Sperrklinke aus der Verrasteten Stellung mit der sich in der Hauptrastposition befindlichen Drehfalle lösen kann.Usually, a release lever which can be triggered by means of a Bowden cable or the like is provided on the vehicle body, which is covered by the engine hood, which can release the pawl from the locked position with the rotary latch located in the main locked position.

Bei Betätigung des Auslösehebels für ein Öffnen der Schließvorrichtung und damit der Motorhaube wird der Schlosshalter 4, der vorzugsweise unterseitig der Motorhaube befestigt ist, freigegeben. Zudem wird die Motorhaube oder der Schlosshalter von einer Öffnungsfeder aus dem ausgelösten Gesperre in Richtung Geöffnetposition gedrängt. Diese Öffnungsbewegung wird zunächst durch den Sicherungsanschlag 11 des Fanghakens 3 begrenzt.When the release lever is actuated to open the locking device and thus the engine hood, the lock holder 4, which is preferably fastened on the underside of the engine hood, is released. In addition, the bonnet or the lock holder is pushed out of the triggered locking mechanism in the direction of the open position by an opening spring. This opening movement is initially limited by the safety stop 11 of the catch hook 3.

Der Benutzer kann nun mit der flachen Hand unter die Motorhaube greifen, um einen Schwenkhebel für den Fanghaken 3 zu betätigen, welcher den Fanghaken 3 entgegen der Fanghakenfederkraft im Uhrzeigersinn verschwenkt, so dass der Schlosshalter 4 nicht mehr durch den Sicherungsanschlag 11 in der Bewegungsbahn 5 begrenzt wird, zumindest solange der Fanghaken 3 entgegen der Fanghankenfederkraft verschwenkt bleibt.The user can now reach under the bonnet with the flat of his hand in order to actuate a swiveling lever for the catch hook 3, which the catch hook 3 pivoted clockwise against the catch hook spring force so that the lock holder 4 is no longer limited by the safety stop 11 in the movement path 5, at least as long as the catch hook 3 remains pivoted against the catch hook spring force.

Die Öffnungsfeder drückt den Schlosshalter 4 in Richtung lediglich ein Stück in Richtung vorgesehener Geöffnetposition, gerade genug, damit nach Freigeben des Fanghakens 3 der Schlosshalter 4 durch die äußere Schräge 13 des Fanghakens 3 daran gehindert wird, zurück in die durch den Sicherungsanschlag 11 definierte Sicherungsposition zu gelangen.The opening spring pushes the lock holder 4 in the direction only a little towards the intended open position, just enough so that after the catch hook 3 is released, the lock holder 4 is prevented by the outer bevel 13 of the catch hook 3 from returning to the securing position defined by the safety stop 11 reach.

Der Benutzer kann nun selbst die Motorhaube bis zur vorgesehenen Geöffnetposition anheben oder das Anheben erfolgt automatisch. Insbesondere ist die vorgesehene Geöffnetposition durch einen Stopper oder ein Haltemechanismus definiert, der dem Benutzer ausreichend Platz für einen bequemen Zugang und eine einfache Einsichtnahme des Motors erlaubt.The user can now lift the engine hood himself to the intended open position or it is lifted automatically. In particular, the intended open position is defined by a stopper or a holding mechanism which allows the user sufficient space for convenient access and easy inspection of the motor.

Zum Schließen wird der Benutzer den Haltemechanismus in der vorgesehenen Geöffnetposition lösen und die Motorhaube wird entweder selber durch die Schwerkraft in Richtung Fahrzugkarosserie fallen und/oder zusätzlich eine gleichgerichtete Kraft durch den Benutzer wiederfahren.To close, the user will release the holding mechanism in the intended open position and the bonnet will either fall itself under the force of gravity in the direction of the vehicle body and / or the user will also apply a force in the same direction.

Wie Figur 1 zeigt, trifft der Schlosshalter 4 beim Hinabfallen oder Schwenken der Motorhaube auf die obere Schräge 13 auf und führt seine Schließbewegung entlang der Bewegungsbahn 5 unter Verdrängung des Fanghakens 3 im Uhrzeigersinn fort.How Figure 1 shows, the lock holder 4 strikes the upper slope 13 when the bonnet falls or pivots and continues its closing movement along the path of movement 5 while displacing the catch hook 3 in a clockwise direction.

Wie Figur 2 zeigt, trifft der Schlosshalter 4 durch die verschwenkte Stellung des Fanghakens 3 auf die Aufnahmeschräge 18 und führt seine Schließbewegung entlang der Bewegungsbahn 5 unter Verdrängung des Fanghakens 3 entgegen dem Uhrzeigersinn fort.How Figure 2 shows, the lock holder 4 hits the receiving slope 18 due to the pivoted position of the catch hook 3 and continues its closing movement along the movement path 5 while displacing the catch hook 3 in a counterclockwise direction.

Wie Figur 3 zeigt, nimmt der Fanghaken 3 beim Passieren der Verengung 7 durch den Schlosshalter 4 eine definierte Stellung ein.How Figure 3 shows, the catch hook 3 assumes a defined position when the lock holder 4 passes the constriction 7.

Figur 4 zeigt den Fall eines Schlosshalters 4 mit übermäßig großer Schließgeschwindigkeit. Denn der Schlosshalter 4 erreicht die Barriere 6, bevor der Fanghaken 3 durch die Fanghakenfeder entgegen dem Uhrzeigersinn in die Endstellung verschwenken konnte. Figure 4 shows the case of a lock holder 4 with an excessively high closing speed. Because the lock holder 4 reaches the barrier 6 before the catch hook 3 could pivot counterclockwise into the end position by the catch hook spring.

Mit dem Anschlagen gegen die Barriere 6 verrastet das Gesperre analog zur Figur 7. Der Fanghaken 3 kann somit weiter seine Schwenkbewegung in die Endstellung fortsetzten bis der Schlosshalter seitlich gegen die zweite Seitenwand 9 des Einlaufschlitzes 19 anschlägt, wie in Figur 5 gezeigt.When it hits the barrier 6, the locking mechanism engages analogously to Figure 7 . The catch hook 3 can thus continue its pivoting movement into the end position until the lock holder strikes laterally against the second side wall 9 of the inlet slot 19, as in FIG Figure 5 shown.

Figur 5 trifft aber auch für die Ausführungsform zu, bei der ein Schlosshalters 4 mit normaler Schließgeschwindigkeit, also keiner übermäßig großen Schließgeschwindigkeit, langsamer oder gleichzeitig mit dem Verschwenken des Fanghakens 3 in die Endstellung das Gesperre erreicht und dort in der vorgesehenen Geschlossenstellung durch das Gesperre verrastet wird. Figure 5 but also applies to the embodiment in which a lock holder 4 reaches the lock at normal closing speed, i.e. not an excessively high closing speed, more slowly or simultaneously with the pivoting of the catch hook 3 into the end position and is locked there in the intended closed position by the lock.

In beiden Fällen, also mit und ohne übermäßig große Schließgeschwindigkeit befindet sich somit die Schließvorrichtung in der Endstellung, die ein Abtauchen bei Überlast erlaubt.In both cases, that is, with and without an excessively high closing speed, the closing device is thus in the end position which allows diving in the event of an overload.

Bei einer Fußgängerkollision wird daher in beiden Fällen gleichermaßen der Schlosshalter infolge der Überlast die Kraft der Öffnungsfeder und Drehfallenfeder überwinden und abtauchen. Das Abtauchen kann maximal bis zum Abtauchanschlag an der Anschlagposition erfolgen. Dieser Abtauchweg genügt jedoch in der Regel, um die Schwere der Verletzung des Fußgängers infolge des Unfalls durch das Abtauchen des Schlosshalters 4 zu reduziert.In the event of a pedestrian collision, the lock holder will therefore equally overcome the force of the opening spring and rotary latch spring and submerge in both cases as a result of the overload. Diving down can only take place up to the stop at the stop position. However, this immersion path is generally sufficient to reduce the severity of the injury to the pedestrian as a result of the accident caused by the immersion of the lock holder 4.

Insbesondere ist die Vertiefung 12 parallel oder spiegelsymmetrisch zur Bewegungsbahn 5 in Endstellung der Schließvorrichtung oder einer Strecke zwischen Fanghakenachse 17 und Sicherungsanschlag 11 bei Anschlagen des Schlosshalters 4 gegen die Barriere 6 ausgeformt.In particular, the recess 12 is parallel or mirror-symmetrical to the movement path 5 in the end position of the closing device or a section formed between catch hook axis 17 and safety stop 11 when the lock holder 4 strikes against the barrier 6.

Insbesondere verläuft eine durch die Bewegungsbahn 5 gebildete Gerade in Endstellung durch die Fanghakenachse 17.In particular, a straight line formed by the movement path 5 runs through the catch hook axis 17 in the end position.

Claims (15)

  1. Latching device for an engine hood of a motor vehicle, the latching device comprising a locking mechanism having a catch (1) and a pawl (2) for ratcheting the catch (1) in a main ratchet position, the latching device further comprising a catch hook (3) which can limit an opening movement of a latch holder (4) after the locking mechanism is opened at a securing position between a provided closed position and a provided open position, there being an end position of the latching device, in which the latch holder (4) can only descend from the provided closed position in the case of overloading, characterized in that the catch hook (3) has a barrier (6) and the latching device is designed such that, during a latching process in the case of an excessively high latching speed, the latching movement of the latch holder (4) is limited by the barrier (6) at the provided closed position of the latch holder (4).
  2. Latching device according to claim 1, characterized in that the latching device is designed such that, during a latching process, the latching movement of the latch holder (4) is only limited by the barrier (6) at the provided closed position of the latch holder (4) in the case of an excessively high latching speed.
  3. Latching device according to either of the preceding claims, characterized in that the latching movement of the latch holder (4) is limited in the case of an excessively high latching speed by striking against the barrier (6), and/or the latch holder (4) is in the provided closed position of the latch holder (4) when striking against the barrier (6).
  4. Latching device according to any of the preceding claims, characterized in that, when the latch holder (4) strikes against the barrier (6) and/or in the end position of the latching device, the locking mechanism is in the main ratchet position.
  5. Latching device according to any of the preceding claims, characterized in that the catch hook (3) has a catch hook spring which preloads the catch hook (3) in the direction of the end position.
  6. Latching device according to any of the preceding claims, characterized in that the catch hook (3) has a run-in slot (19) for receiving the latch holder (4).
  7. Latching device according to the preceding claim, characterized in that the barrier (6) is a surface portion of the run-in slot (19) or the barrier (6) is integrally and/or immovably joined to the run-in slot (19).
  8. Latching device according to either of the two preceding claims, characterized in that the run-in slot (19) comprises a recess (12) for the descent of the latch holder (4) and/or the recess (12) for the descent of the latch holder (4) is a contour portion of the run-in slot (19).
  9. Latching device according to any of the three preceding claims, characterized in that the barrier (6) and the recess (12) are arranged next to one another and/or directly adjoin one another.
  10. Latching device according to any of the four preceding claims, characterized in that, in the end position of the latching device, the latch holder (4) rests against a lateral wall of the run-in slot (19), and the locking mechanism is in the main ratchet position.
  11. Latching device according to any of the five preceding claims, characterized in that the run-in slot (19) has a narrowed portion (7) for allowing the latch holder (4) to pass through in a precisely fitting manner.
  12. Latching device according to any of the six preceding claims, characterized in that the latching movement of the latch holder (4) takes place along a defined movement path (5), the movement path (5) intersecting the barrier (6) and/or a catch hook axis (17) of the catch hook (3) when the latch holder (4) is in the narrowed portion (7).
  13. Latching device according to any of the seven preceding claims, characterized in that the latching device is designed such that, after the latch holder (4) has passed the narrowed portion (7) during a latching process, the catch hook spring pivots the catch hook (3) in the direction of the end position.
  14. Latching device according to any of the eight preceding claims, characterized in that the latching device is designed in such that, during a latching process, in particular after passing the narrowed portion (7), a latch holder (4) having an excessively high latching speed reaches the barrier (6), in particular overcomes a distance between the narrowed portion (7) and the barrier (6), faster than the catch hook (3) can pivot into the end position.
  15. Latching device according to claim 2, characterized in that the latching device is designed such that, during a latching process, in particular after passing the narrowed portion (7), a latch holder (4) having a normal latching speed, as a result of the pivoting of the catch hook (3) into the end position, strikes against the lateral wall of the run-in slot before reaching the provided closed position of the latch holder (4), and/or the latching movement is limited at the closed position above the recess (12), in particular by a force of an opening spring and/or of a catch spring.
EP17722654.5A 2016-04-18 2017-03-22 Locking device for a motor vehicle bonnet Active EP3445932B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016107129.3A DE102016107129A1 (en) 2016-04-18 2016-04-18 Closing device for an engine hood of a motor vehicle
PCT/DE2017/100231 WO2017182022A1 (en) 2016-04-18 2017-03-22 Locking device for a motor vehicle bonnet

Publications (2)

Publication Number Publication Date
EP3445932A1 EP3445932A1 (en) 2019-02-27
EP3445932B1 true EP3445932B1 (en) 2021-04-28

Family

ID=58698891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17722654.5A Active EP3445932B1 (en) 2016-04-18 2017-03-22 Locking device for a motor vehicle bonnet

Country Status (5)

Country Link
US (1) US20240035320A1 (en)
EP (1) EP3445932B1 (en)
CN (1) CN109328253B (en)
DE (1) DE102016107129A1 (en)
WO (1) WO2017182022A1 (en)

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Publication number Priority date Publication date Assignee Title
DE3337202A1 (en) * 1983-10-13 1985-04-25 Volkswagenwerk Ag, 3180 Wolfsburg Locking device for a pivotable cover, especially for an engine bonnet or boot lid of a motor vehicle
DE10033772A1 (en) 2000-07-12 2002-01-24 Volkswagen Ag Lock arrangement, in particular for a motor vehicle front hood
FR2863298B1 (en) * 2003-12-09 2006-05-05 Oxford Automotive Mecanismes E LOCK FOR VEHICLE HOOD
FR2889230B1 (en) * 2005-07-28 2008-12-19 Coutier Moulage Gen Ind IMPACT ABSORPTION LOCK FOR A MOTOR VEHICLE HOOD
FR2897380B1 (en) * 2006-02-13 2012-05-18 Coutier Moulage Gen Ind DOUBLE RETENTION LOCK FOR AUTOMOTIVE VEHICLE HOOD
DE102007007633A1 (en) * 2007-02-16 2008-08-21 Bayerische Motoren Werke Aktiengesellschaft Arrester hook for adjustable lid of motor vehicle, has supporting device enabling expandable adjustment of respective hook and/or arrester element when device arranges hook and/or element in trapping position or initial position
DE102008039731A1 (en) 2008-08-26 2010-03-04 Bayerische Motoren Werke Aktiengesellschaft Bonnet i.e. front bonnet, locking apparatus for passenger car, has additional locking device with locking bolt and locking hook, which are movable from original to locked position and hold closing bracket against opening in locked position
DE102010025355B4 (en) * 2010-06-28 2014-11-13 Audi Ag Lock device for a motor vehicle
WO2012100328A1 (en) * 2011-01-26 2012-08-02 Magna Closures Inc. Over travel hood latch
KR20130019686A (en) 2011-08-17 2013-02-27 현대자동차주식회사 Safety hook of hood latch
KR101293974B1 (en) * 2011-11-07 2013-08-07 현대자동차주식회사 Active hood latch device for vehicle
DE102013109051A1 (en) * 2013-08-21 2015-02-26 Kiekert Aktiengesellschaft Motor vehicle door lock
DE102014109110A1 (en) * 2014-06-30 2015-12-31 Kiekert Ag Closing device for a motor vehicle hood
DE102014118635A1 (en) * 2014-10-10 2016-04-14 Kiekert Ag Motor vehicle lock
CN105155949A (en) * 2015-08-31 2015-12-16 重庆长安汽车股份有限公司 Front cover lock of car

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN109328253A (en) 2019-02-12
CN109328253B (en) 2020-12-01
US20240035320A1 (en) 2024-02-01
WO2017182022A1 (en) 2017-10-26
EP3445932A1 (en) 2019-02-27
DE102016107129A1 (en) 2017-10-19

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