EP3394372B1 - Sicherheitsvorrichtung für ein kraftfahrzeug mit einer drehfalle und einer auswurffeder - Google Patents

Sicherheitsvorrichtung für ein kraftfahrzeug mit einer drehfalle und einer auswurffeder Download PDF

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Publication number
EP3394372B1
EP3394372B1 EP16813220.7A EP16813220A EP3394372B1 EP 3394372 B1 EP3394372 B1 EP 3394372B1 EP 16813220 A EP16813220 A EP 16813220A EP 3394372 B1 EP3394372 B1 EP 3394372B1
Authority
EP
European Patent Office
Prior art keywords
leg
rotary latch
rotation
lock holder
safety device
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
EP16813220.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3394372A1 (de
Inventor
Ömer INAN
Michael Scholz
Holger Schiffer
Thomas SCHÖNENBERG
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
Original Assignee
Kiekert AG
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Filing date
Publication date
Application filed by Kiekert AG filed Critical Kiekert AG
Publication of EP3394372A1 publication Critical patent/EP3394372A1/de
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Classifications

    • 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
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/0053—Other details of locks; Parts for engagement by bolts of fastening devices means providing a stable, i.e. indexed, position of lock parts
    • E05B15/006—Spring-biased ball or roller entering a notch
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing
    • E05B17/0033—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing for opening only
    • E05B17/0037—Spring-operated
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E05B2015/0486—A single spring working on more than one element

Definitions

  • the invention relates to a safety device for a motor vehicle, which has a lock holder, a pawl, an ejection spring for ejecting the lock holder and a rotary latch, the rotary latch having an opening rotation direction, a closing rotation direction, an open position and a main locking position.
  • Such a safety device is in the DE 10 2010 037 937 A1 described, wherein the ejector spring is provided to assist in moving the safety device from the closed position to the unlocked position.
  • the safety device has a rotary latch spring for loading the rotary latch, the ejection spring being arranged outside of a trajectory along which an outer circumference of the rotary latch moves.
  • Safety devices for a motor vehicle with a lock holder, a pawl, an ejection spring for ejecting the lock holder and with a rotary latch are also known, with one leg of the ejection spring resting directly on the lock holder in a main locking position of the rotary latch and in an intermediate position of the rotary latch between the main locking position and an open position of the leg rests directly on the rotary latch, for example from the DE 10 2010 061518 A1 , the DE 10 2010 037 937 A1 or the EP 2 851 495 A2 .
  • a safety device for a motor vehicle which has a lock holder, a pawl, an ejection spring for ejecting the lock holder and a rotary latch, the rotary latch having an opening rotation direction, a closing rotation direction, an open position and has a primary detent position.
  • the ejector spring has a leg and that the leg rests directly on the lock holder when the rotary latch is in the main latching position and that the leg rests directly on the rotary latch in at least one intermediate position of the rotary latch, in which the rotary latch is between the main latching position and the open position applied.
  • the ejection spring is designed as a spiral spring.
  • the configuration of the ejection spring as a spiral spring can, in particular, enable a narrower design of the safety device compared to a safety device in which the ejection spring is designed as a torsion spring.
  • the configuration of the ejection spring as a spiral spring can in particular simplify joint mounting of the rotary latch and the ejection spring on a common axis of rotation.
  • the narrower design of the ejection spring as a spiral spring is particularly advantageous compared to a torsion spring, because the bearings of a bearing pair for the common axis of rotation can be arranged closer to one another and the axis of rotation can thus be shorter and a higher load capacity of the axis of rotation is made possible by more than one component to store.
  • the rotary latch has a load arm and a catch arm, with the catch arm and the load arm forming a fork-shaped inlet mouth of the rotary latch, which receives the lock holder when the rotary latch is closed.
  • the catch arm and the load arm each have a head area, with the two head areas advantageously being the areas of the rotary latch that are furthest away from an axis of rotation of the rotary latch.
  • the two head areas form an opening in the inlet mouth, into which the lock holder enters when the rotary latch is closed.
  • the head areas can preferably extend up to a fifth of the length of the catch arm or the load arm from the respective end of the catch arm or the load arm to the axis of rotation of the rotary latch.
  • the load arm and the catch arm are preferably at least partially arcuate in order to enable the lock holder to be guided within the infeed mouth during a closing movement of the rotary latch.
  • the catch has a main catch, with the pawl engaging around the main catch in the main catch position and blocking the catch in the opening direction of rotation.
  • the safety device is locked in the main latching position of the rotary latch, with a front hood, to which the lock holder is preferably attached, assuming a closed position.
  • the lock holder or the front hood arranged on the lock holder is released from the rotary latch.
  • the opening direction of rotation of the rotary latch is the direction in which the rotary latch moves from the main locking position rotates towards the open position.
  • the closing direction of rotation is the opposite direction of rotation to the opening direction of rotation.
  • Ejecting the lock holder means that the lock holder is moved in such a way that, after ejection, the lock holder is released from the rotary latch, with the rotary latch being in the open position.
  • the ejection spring supports the ejection of the lock holder at least partially, preferably at the beginning of the ejection of the lock holder.
  • Direct contact of the leg with the rotary latch means in particular that the leg either bears directly against the rotary latch or bears against a component of the safety device whose speed relative to the rotary latch is zero and is connected to the rotary latch.
  • the rotary latch can have a driver which is positively connected to a main material of the rotary latch.
  • the ejection spring drives the catch first indirectly via the lock holder and then directly in the opening direction of rotation via the driver during ejection of the lock holder.
  • the driver is preferably designed in one piece with the rotary latch and, for example, as a pin or mandrel.
  • the ejection spring is advantageously designed as a torsion spring which is subjected to bending stresses about its axis of rotation.
  • the leg rests directly against the lock holder when the rotary latch is in the main latching position.
  • Directly means in particular that no further component is provided between the leg and the lock holder.
  • a main spring material of the ejection spring which gives the ejection spring spring stiffness, preferably rests directly on the lock holder in the main latching position of the rotary latch.
  • the leg preferably extends at least to a radius of 3 to 5 cm, starting from an axis of rotation of the ejection spring.
  • the axis of rotation of the ejection spring preferably runs parallel to an axis of rotation of the rotary latch.
  • a first variant provides that the ejection spring and the catch have a common axis of rotation.
  • the safety device can be designed to be very compact, as a result of which the installation space required for the safety device is reduced.
  • the design of the ejector spring is simplified in that a torque that causes the ejector spring also acts directly or indirectly on the rotary latch, and therefore no conversion of a torque generated by the ejector spring to a torque acting on the rotary latch is required when designing the safety device is.
  • a second variant provides that the axis of rotation of the ejection spring is offset from the axis of rotation of the rotary latch.
  • the axis of rotation of the rotary latch is advantageously arranged between an axis of rotation of the pawl and the axis of rotation of the ejection spring, which compared to the first variant provides an enlarged lever arm of the ejection spring when the rotary latch is acted upon.
  • the ejection spring is preferably positioned by means of a bearing bush.
  • the rotary latch In the intermediate position of the rotary latch, the rotary latch is rotated, starting from the main latching position, in the opening direction of rotation, preferably rotated by at least fifty to sixty degrees.
  • the leg advantageously rests against the rotary latch in several intermediate positions, with the respective positions of the leg in the intermediate positions forming a circular sector which, starting from a position of the leg in the main locking position of the rotary latch, is in the opening direction of rotation.
  • the ejection spring acts on the rotary latch directly in the intermediate position and indirectly via the lock holder in the opening direction of rotation in the main locking position, with contact between the lock holder and the inlet mouth of the rotary latch preferably existing in every position of the leg when the rotary latch moves from the main locking position to the open position .
  • This can advantageously reduce noise emissions from the safety device compared to a safety device in which permanent contact between the lock holder and the inlet opening cannot be guaranteed.
  • the proposed safety device with the leg of the ejector spring makes it possible to dispense with an additional rotary latch spring for driving the rotary latch, which reduces the space required for the safety device on the one hand and the total weight of the safety device on the other.
  • the rotary latch has a pre-locked position and the leg rests directly on the rotary latch in the pre-locked position.
  • the catch has a first catch, with the pawl encompassing the first catch in the first catch position and blocking the catch in the opening direction of rotation.
  • the main spring material of the ejection spring preferably lies directly against the driver of the rotary latch in the pre-locking position.
  • the safety device secures the rotary latch against rotation in the opening direction of rotation, with the lock holder, which is encompassed by an inlet mouth of the rotary latch, being blocked in the opening direction.
  • the front hood is blocked in the opening direction. Securing the front hood in this way in the pre-locked position can prevent the front hood from opening unintentionally if the rotary latch was inadvertently released from the main locked position.
  • the leg rests alternately on the lock holder and on the rotary latch when the rotary latch rotates in the opening direction of rotation.
  • Alternating means that the leg rests against the lock holder at least in a first position of the rotary latch and contact between the leg and the rotary latch is eliminated, and in a second position of the rotary latch, in which the rotary latch is rotated from the first position in the opening direction of rotation, the leg rests against the rotary latch, for example the driver, and contact between the lock holder and the leg is eliminated.
  • the leg can cover a larger sector of a circle compared to an embodiment in which no change of contact of the leg is provided.
  • a safety device which provides an ejector spring that rests alternately on the lock holder and on the rotary latch can be equipped with an ejector spring of smaller dimensions, as a result of which the installation space and the weight of the safety device can be reduced.
  • the leg is designed in such a way that during the change of contact of the leg from the lock holder to the rotary latch, a non-positive connection is provided between the leg and the lock holder.
  • the leg can have a curvature, as a result of which a relative speed between the lock holder and the leg is reduced when the leg is rotated.
  • a reduced relative speed between the lock holder and the leg can increase the duration of the system change of the leg from the lock holder to the rotary latch, whereby the frictional connection between the leg and the lock holder is ensured during the system change.
  • the frictional connection between the arm and the lock holder takes place on the one hand directly through direct contact between the arm and the lock holder and on the other hand indirectly, starting from direct contact between the arm and the rotary latch or the driver of the rotary latch via direct contact of the lock holder with the inlet mouth of the rotary latch.
  • the adhesion during the system change can on the one hand ensure a continuous opening movement of the lock holder during the movement of the rotary latch in the opening direction of rotation, which ensures increased comfort for an operator of an openable front hood.
  • the frictional connection between the leg and the lock holder during the system change can also reduce the noise when the lock holder is ejected.
  • the leg has, in a first plane perpendicular to the axis of rotation of the ejection spring, at least one first section that is curved relative to the axis of rotation of the ejection spring.
  • the first section is concave, i. H. inwardly curved, the inner side being defined from the leg by that side on which the axis of rotation of the ejector spring is located. In the main locking position of the rotary latch, the first section is very advantageously in contact with the lock holder.
  • the concave curvature of the first section of the leg can cause a relative stroke distance of the lock holder to be reduced in comparison to a variant in which the leg has a straight first section.
  • the relative stroke distance is calculated from the quotient of a stroke distance covered by the lock holder as a numerator and a swept angle of rotation of the leg as a denominator within a time interval.
  • the reduced relative stroke distance of the lock holder during rotation of the leg in the opening direction of rotation can cause the work done by the ejector spring to be increased per stroke distance of the lock holder and thereby the spring force of the ejector spring acting on the lock holder is increased.
  • the ejection spring in the case of a safety device with an ejection spring having a leg with a first curved section, the ejection spring can be dimensioned to be smaller, as a result of which the weight and the required installation space of the safety device can be reduced.
  • the leg in the first plane or a second plane perpendicular to the axis of rotation Ejector spring has at least one second section adjacent to the first section, the second section having a curvature oriented opposite to the first section.
  • the second section is convex, ie curved outwards, the outer side being defined by the side which, viewed from the leg, is opposite the side on which the axis of rotation of the ejector spring is located.
  • the convex curvature of the second section can cause an increase in the stroke distance of the lock holder per swept angle of rotation of the leg.
  • Such an increase in the relative stroke distance of the buckle allows acceleration of the buckle, which is caused by ejection of the ejection spring, to be reduced in the second section. Less acceleration of the buckle in the second section increases the time in which the buckle sweeps the second section of the leg.
  • the lock holder is in contact with the second section of the leg during the change of contact of the leg from the lock holder to the rotary latch. Due to the reduction in the acceleration of the lock holder achieved by means of the convex curvature of the second section, a period of time in which the system can be changed can be increased. Increasing this period of time can, on the one hand, facilitate the adaptation of the driver to the geometry of the leg when designing the safety device and, on the other hand, reduce the noise during the system change and ensure a frictional connection between the leg and the lock holder.
  • the leg has at least one third section adjoining the second section in the first plane, the second plane or a third plane perpendicular to the axis of rotation of the ejection spring, the third section having a curvature oriented opposite to the second section.
  • the curvature of the third section is the same as the curvature of the first Section oriented, ie it is concave.
  • the concave curvature of the third section can reduce a stroke distance of the dog per rotation angle of the leg, ie a relative stroke distance, in the same way that the concave curvature of the first section can reduce a relative stroke distance of the latch holder.
  • the torque acting on the rotary latch by the ejection spring can be increased, as a result of which the ejection spring can be dimensioned smaller.
  • the curvatures of the first, second and/or third section can be constant in magnitude over a length of the leg. In another embodiment, the amounts of the respective curvatures may vary along the length of the leg.
  • the first section has an almost horizontal orientation in the main locking position and is in contact with the lock holder.
  • the orientation is defined by a line connecting a beginning and an end of the first section, the first section extending along the leg.
  • the almost horizontal alignment of the first section of the leg in the main locking position relates in particular to a state of the safety device in which it is installed in a motor vehicle.
  • an exactly horizontal line runs parallel to a vehicle longitudinal axis of the motor vehicle.
  • the connecting line encloses an angle of at least less than 20 degrees, preferably less than 15 degrees, with the longitudinal axis of the vehicle.
  • the horizontal first section of the leg borders on a coil of the ejection spring.
  • the almost horizontal alignment of the first section of the leg in the main latching position can have the effect that when the leg is initially rotated, a normal force which acts from the leg on the lock holder is aligned almost vertically, in particular perpendicular to the longitudinal axis of the vehicle, upwards and almost all of it Normal force acts against a weight force transmitted via the lock holder.
  • This can make it possible for the ejection spring to be dimensioned smaller for driving the rotary latch in the opening direction of rotation and preferably for ejecting the lock holder.
  • Figures 2a to 2b show a non-inventive safety device 1 for a
  • the safety device 1 has a lock holder 2 , a pawl 3 and a rotary latch 4 .
  • the catch 4 has a load arm 5, a catch arm 6, an opening direction of rotation 7, a closing direction of rotation 8, a pre-locking position and a main locking position.
  • the safety device 1 also has an ejection spring 9 for ejecting the lock holder 2 , which is tensioned in the closing direction 8 of the rotary latch 4 and acts on the rotary latch 4 in the opening rotational direction 7 .
  • the ejection spring 9 preferably has a fixed end 36 which is supported on a stationary support 37 of the safety device 1 .
  • Fixed end 36 advantageously extends up to a bearing bush 25 and preferably surrounds the bearing bush 25 in such a way that the fixed end 36 is immovable in relation to the axis of rotation 34 of the ejection spring 9 .
  • the pawl 3 has a pawl spring 10 which acts on the pawl 3 in a locking direction 11 of rotation. Furthermore, the pawl 3 has a locking lug 12, which the rotary latch 4 in the Fig. 1a shown main locking position of the rotary latch 4 against rotation in the opening direction of rotation 7 secures.
  • the catch arm 6 and the load arm 5 form a fork-shaped inlet mouth 13 of the rotary latch 4 which accommodates the lock holder 2 .
  • the load arm 5 and the catch arm 6 are preferably partially arcuate in order to enable the lock holder 2 to be guided within the inlet mouth 13 during a closing movement and an opening movement of the rotary latch 4 .
  • the catch arm 6 has a head area 14 with a bend 15 in the direction of the opening direction of rotation 7, the bend 15 forming a preliminary catch 16.
  • the load arm 5 has a head area 17 with a bend 18 in the direction of the opening rotation direction 7 , the bend 18 forming a main catch 19 .
  • the pawl 12 encompasses the main latch 19.
  • the ejection spring 9 acts on the rotary latch 4 via the lock holder 2 in the direction of the opening rotation direction 7, with the main latch 19 being pressed against the latching lug 12 of the pawl 3 and thereby a pressure is generated on a contact surface of the locking lug 12, which in addition to the force acting on the pawl spring 10 force the pawl in an in Fig. 1a shown blocking position holds.
  • the rotary latch 4 can be released from the main locking position and from the pre-locking position by rotating the pawl 3 counter to the locking direction of rotation 11 towards a release position. If the load arm 5 or the catch arm 6 of the rotary latch 4 can be passed in the opening direction of rotation 7 on the detent 12 of the pawl 3, the pawl 3 is in the release position.
  • the ejection spring 9 is designed as a leg spring, the ejection spring 9 having a leg 27 and a main spring material which gives the ejection spring 9 spring stiffness.
  • the main spring material is preferably a metal. Provision is made for the lock holder 2 to rest directly against the leg 27, preferably against the main spring material, in the main locking position.
  • An embodiment within the scope of the invention provides that the main spring material is provided with a protective cover, the protective cover being part of the leg 27 . In this case, the leg 27 also lies directly against the lock holder 2 in the main locking position.
  • Figure 2b shows the rotary latch 4 in an open position, in which the lock holder 2 is released from the load arm 5 of the rotary latch 4, ie a blockage of a movement of the lock holder 2 upwards by the load arm 5 is lifted.
  • Fig. 1d shows the rotary latch 4 in an intermediate position, in which the rotary latch 4 is located between the main locking position and the open position and, starting from the main locking position, is rotated in the opening direction of rotation 7 .
  • in the in Fig. 1d shown intermediate position is the leg 27 directly to a driver 21 of the rotary latch 4, ie on the rotary latch 4 at.
  • the driver 21 is part of the surface of the catch arm 6.
  • the driver 21 is connected to the catch arm 6, so that a relative speed between the driver 21 and the rotary latch 4 is zero and thus a direct contact of the Leg 27 on the driver 21 corresponds to a direct concern of the leg on the rotary latch 4.
  • Maintaining contact between the catch arm 6 and the lock holder 2 when the lock holder 2 is ejected can reduce a noise when the lock holder 2 is ejected, in contrast to an embodiment in which the leg 27 rests against the lock holder 2 in the open position and the lock holder strikes 2 on an inner surface of the load arm 5 can cause.
  • a lifting force acting directly on the rotary latch 4 when the rotary latch 4 is opened up to the open position enables an increase in a lifting path 22 of the lock holder 2, in contrast to a variant in which the leg 27 only rests against the lock holder 2 when the rotary latch 4 is opened .
  • Increasing the lifting distance 22 increases the ease of use of a front hood connected to the lock holder 2 in that the area of engagement between an edge of the front hood and another edge of a body of the motor vehicle underneath it is increased, making it easier to grip the front hood.
  • the ejection spring 9 has an axis of rotation 34, which is offset to an axis of rotation 20 of the rotary latch 4 is arranged.
  • a in Fig. 1a The lever arm 26 shown, which extends between the center point of the lock holder 2 and the axis of rotation 34 of the ejector spring 9, is due to the offset arranged axes of rotation 34 and 20 compared to a safety device in which the ejector spring 9 and the rotary latch 4 have a common axis of rotation. enlarged.
  • the rotary latch 4 and the ejection spring 9 can have a common axis of rotation. This has the advantage of a more compact design and weight savings.
  • the image plane of Fig. 1a considered, which is aligned perpendicular to the axis of rotation 34 of the ejection spring 9 and represents a first plane.
  • the leg 27 of the ejection spring 9 has a first section 28 which is curved in the first plane relative to the axis of rotation 34 of the ejection spring 9 and preferably adjoins a coil of the ejection spring 9 .
  • the first section 28 is concave, ie curved inwards, with an inner side being defined in relation to the leg 27 by that side on which the axis of rotation 34 of the ejection spring 9 is located. in the in Fig. 1a illustrated main locking position of the rotary latch 4 is located on the first section 28 on the lock holder.
  • the concave curvature of the first section 28 of the leg 27 can have the effect that when the leg 27 rotates, starting from the main locking position of the rotary latch 4 in the opening direction of rotation 7, compared to a variant in which the leg 27 has a straight first section 28, a stroke distance 29 of the lock holder 2 per swept angle of rotation 30 of the leg 27, referred to below as the relative stroke distance of the lock holder 2, is reduced.
  • Fig. 1a 12 further shows that the first section 28 in the main detent position forms an angle of approximately 12 degrees with a horizontal line in the plane of the drawing Fig. 1a includes, ie is almost horizontally aligned.
  • the leg 27 has a second section 31 adjoining the first section 28 , the second section 31 having a curvature oriented opposite to the first section 28 .
  • the second section 31 is convex, ie curved outwards, with an outer side being defined by that side which, seen from the leg 27 , lies opposite the side on which the axis of rotation 34 of the ejector spring 9 is located.
  • the convex curvature of the second section 31 can cause an increase in the relative stroke distance of the lock holder 2, whereby acceleration of the lock holder 2 caused by the ejection spring 9 can be reduced when the lock holder 2 slides along the second section 31.
  • reducing the acceleration of the latch holder can reduce noise during an attachment change.
  • a contact change of the leg 27 during an ejection of the lock holder 2 from a contact of the leg 27 on the lock holder 2 to a contact of the leg 27 on the rotary latch 4 is described below.
  • the pawl 3 from the locked position preferably by means of an electric drive
  • the Fig. 1b shown release position transferred.
  • the rotary latch 4 released in the opening direction of rotation 7 is accelerated by means of the ejection spring 9 via contact between the lock holder 2 and the load arm 5 and is moved into the in 1c position shown rotated.
  • FIG. 1c shows the rotary latch 4 in a position between the main locking position and an in Fig. 1e shown pre-locking position.
  • the leg 27 is rotated through an angle 32 in the opening direction of rotation 7 and the lock holder 2 is raised by a lifting distance 33 upwards.
  • a relative stroke distance of the lock holder 2 is calculated, for example, in 1c shown position of the catch 4 from the quotient of the stroke distance 33 as a numerator and the swept angle of rotation 32 of the leg 27 as a denominator. in the in 1c
  • the position of the rotary latch 4 shown is in contact with the leg 27 on the lock holder 2, but not on the rotary latch 4 or the driver 21.
  • FIG 1c shown position of the rotary latch 4, the bend 15 is blocked by a cantilever of the pawl 3.
  • the pawl 3 rotates, acted upon by the pawl spring 10, into the locked position, which Fig. 1d is shown with the blockage removed by the cantilever.
  • the rotary latch 4 is rotated by the ejector spring 9 via the lock holder 2 and a contact between the lock holder 2 and the load arm 5 in the opening direction of rotation 7.
  • the leg 27 rests against the driver 21.
  • the leg 27 is in contact with the lock holder 2 .
  • the second curved section 31 preferably extends beyond the edges shown in the figures in the direction of the open end of the leg 27 and is convexly curved in this configuration in such a way that the leg 27 moves away from the in Fig.
  • Fig. 1e shows the rotary latch 4 in the pre-locked position, the pawl 3 blocking the catch arm 6 and thus the rotary latch 4 in the opening direction of rotation 7 .
  • the leg 27 rests directly against both the lock holder 2 and the driver 21 and thus against the catch 4 .
  • the pawl 3 is rotated from the locked position towards the release position. This can preferably be done manually.
  • the release position of the pawl 3 the rotary latch 4 is released in the opening direction of rotation 7 and is accelerated in the opening direction of rotation 7 via direct contact between the leg 27 and the driver 21 by means of the ejector spring 9, as shown in FIG 1f shown.
  • Figure 2a shows a position of the rotary latch 4 in which the rotary latch 4 is opposite to that in 1f position shown is rotated in the opening direction of rotation 7.
  • this position of the rotary latch 4 in which the rotary latch 4 is not yet in the open position, contact between the leg 27 and the lock holder 2 is eliminated, and the leg 27 rests against the driver 21.
  • The, starting from 1c about 1d, 1e, 1f up to Figure 2a The sequence of movements shown shows a system change of the leg 27 from the lock holder 2 to the rotary latch 4, the leg 27 being designed in such a way that a frictional connection is provided between the leg 27 and the lock holder 2 during the system change.
  • This change of contact means that the leg 27 of the ejector spring 9 can cover a larger angular range than the rotary latch 4 while the lock holder 2 is being ejected.
  • This has the advantage that, compared to a variant without such a change in contact, the ejection spring 9 is more relaxed, with the ejection spring 9 doing more work directly or indirectly on the lock holder 2 .
  • This has the advantage that the ejector spring 9 can be dimensioned smaller and the installation space and the weight of the safety device 1 can be reduced as a result.
  • the 2c to 2f show a closing process of the safety device 1.
  • the lock holder 2 moves the rotary latch 4 via the catch arm 6 in the closing direction of rotation 8.
  • the offset 15 of the head region 14 of the catch arm 6 hits the detent 12 of the pawl 3, as in Fig. 2d is shown.
  • the catch arm 6 pushes the pawl 3 , starting from the locked position, in the direction of the release position, with the catch arm 6 being able to pass the locking lug 12 .
  • Figure 2e shows the rotary latch 4 in the pre-locked position after the catch arm 6 has passed the locking lug 12 and the pawl 3 has been moved into the locked position by means of the pawl spring 10 .
  • This position can be assumed, for example, when a front hood on which the lock holder 2 is fastened, was not depressed with sufficient force, so that the rotary latch 4 reaches the main locking position with a single depression. Latching of the rotary latch 4 in the pre-locking position during a closing process of the safety device 1 prevents the rotary latch 4 from reaching the open position again and thus prevents the front hood from snapping open.
  • FIG. 3 shows a front hood 66 arranged on the lock holder 2, as can be provided, for example, in the case of the safety device 1 installed in a motor vehicle.
  • the safety device 1 is preferably arranged in a front area of the front hood 66 .
  • the safety device 1 can be arranged in a rear area of the front hood 66 .

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  • Lock And Its Accessories (AREA)
EP16813220.7A 2015-12-22 2016-11-28 Sicherheitsvorrichtung für ein kraftfahrzeug mit einer drehfalle und einer auswurffeder Active EP3394372B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015122583.2A DE102015122583A1 (de) 2015-12-22 2015-12-22 Sicherheitsvorrichtung für ein Kraftfahrzeug mit einer Drehfalle und einer Auswurffeder
PCT/DE2016/100554 WO2017108022A1 (de) 2015-12-22 2016-11-28 Sicherheitsvorrichtung für ein kraftfahrzeug mit einer drehfalle und einer auswurffeder

Publications (2)

Publication Number Publication Date
EP3394372A1 EP3394372A1 (de) 2018-10-31
EP3394372B1 true EP3394372B1 (de) 2022-04-20

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CN107023232B (zh) * 2016-01-29 2019-10-25 开开特股份公司 机动车锁
EP3613928B1 (en) * 2018-08-17 2021-06-09 Inteva Products, LLC Inside release spring for vehicle door
JP7206877B2 (ja) * 2018-12-14 2023-01-18 株式会社アイシン 車両用ドアロック構造
IT201900024433A1 (it) * 2019-12-18 2021-06-18 Cebi Italy Spa Serratura double pull per veicolo.
JP7319317B2 (ja) * 2021-03-29 2023-08-01 株式会社城南製作所 車両用ロック装置
JP7319318B2 (ja) * 2021-03-29 2023-08-01 株式会社城南製作所 車両用ロック装置
DE102022114137A1 (de) 2022-06-03 2023-12-14 Kiekert Aktiengesellschaft Kraftfahrzeug-Schließvorrichtung

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FR2889230B1 (fr) * 2005-07-28 2008-12-19 Coutier Moulage Gen Ind Serrure a absorption de choc pour un capot de vehicule automobile
FR2897380B1 (fr) * 2006-02-13 2012-05-18 Coutier Moulage Gen Ind Serrure a double retention pour capot de vehicule automobile
DE102010037937A1 (de) 2010-10-04 2012-04-05 Kirchhoff Gmbh & Co. Kg Kraftfahrzeugschloss
DE102010061518B4 (de) * 2010-12-23 2022-03-24 Witte Automotive Gmbh Frontklappenschloss
US9382735B2 (en) 2013-09-18 2016-07-05 Brose Schliesssysteme Gmbh & Co. Kg Motor vehicle lock
EP2902272B1 (en) * 2014-01-30 2016-07-06 Volvo Car Corporation Hood latch assembly
DE102014003737A1 (de) * 2014-03-18 2015-09-24 Kiekert Aktiengesellschaft Schließvorrichtung für eine Kraftfahrzeughaube
CN204826948U (zh) * 2015-08-10 2015-12-02 青州市胜通汽车配件有限公司 拖拉机机罩锁
CN105155949A (zh) * 2015-08-31 2015-12-16 重庆长安汽车股份有限公司 一种汽车前罩锁

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US20190017291A1 (en) 2019-01-17
DE102015122583A1 (de) 2017-06-22
US11162276B2 (en) 2021-11-02
EP3394372A1 (de) 2018-10-31
CN108603389A (zh) 2018-09-28
KR20180097655A (ko) 2018-08-31
WO2017108022A1 (de) 2017-06-29
CN108603389B (zh) 2020-06-02

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