EP2844812B1 - Lock for a flap or door - Google Patents
Lock for a flap or door Download PDFInfo
- Publication number
- EP2844812B1 EP2844812B1 EP13734314.1A EP13734314A EP2844812B1 EP 2844812 B1 EP2844812 B1 EP 2844812B1 EP 13734314 A EP13734314 A EP 13734314A EP 2844812 B1 EP2844812 B1 EP 2844812B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pawl
- catch
- lever
- locking mechanism
- locking
- 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
Links
- 230000000903 blocking effect Effects 0.000 claims description 49
- 238000005452 bending Methods 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000000977 initiatory effect Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Images
Classifications
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- 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
- E05B77/04—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/0054—Fraction or shear lines; Slip-clutches, resilient parts or the like for preventing damage when forced or slammed
- E05B17/0062—Fraction or shear lines; Slip-clutches, resilient parts or the like for preventing damage when forced or slammed with destructive disengagement
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B61/00—Other locks with provision for latching
-
- 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
- E05B77/10—Allowing opening in case of deformed bodywork, e.g. by preventing deformation of lock parts
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- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
- E05B85/20—Bolts or detents
- E05B85/24—Bolts rotating about an axis
- E05B85/26—Cooperation between bolts and detents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
Definitions
- the invention relates to a lock for a flap or a door having the features of the preamble of claim 1.
- the door or flap may be a door or flap of a motor vehicle or a building.
- DE 10 2008 061 524 A1 describes a lock comprising a locking mechanism with a rotary latch and at least one pawl, with which the catch can be locked in a closed position by locking surfaces of pawl and rotary latch.
- Detent surfaces means the surfaces of the rotary latch and pawl which abut each other for locking the locking mechanism and then have an overlap result.
- the rotary latch In a closed position, the rotary latch is able to hold a locking bolt of a door or a flap, so that the door or flap can not be opened. If the catch is in an open position, the locking bolt can leave the locking mechanism and the door or flap can be opened.
- a rotary latch has a load arm and a tentacle.
- the load arm prevents a locking bolt from leaving a door or a flap. If a door or a flap is closed, the locking pin is moved against the catching arm and pivots it and thus also the catch in the direction of the closed position.
- the tentacle is also denominated as a main load arm, both terms are used in the following as synonyms.
- the publication DE 10 2010 003 483 A1 discloses a ratchet in which the catch introduces an opening moment into the pawl when the pawl locks the catch in the main catch position.
- the rotary latch may introduce such torque into the pawl due to a door seal pressure and / or due to a biased spring capable of rotating the catch to its open position and / or by opening an associated door or flap.
- the pawl can be moved out of its rest position.
- a blocking lever which is capable of blocking the removal of the pawl from its detent position.
- the blocking lever is pivoted out of its blocking position by means of a release lever.
- the opening moment is sufficient, which is introduced by the catch in the pawl to detent the locking, so to open it.
- the locking mechanism can be opened due to the driver, the provided for example on the trigger lever driver must be able to be pivoted over a sufficiently large angle. Regularly sufficient is an angle of 20 ° to 30 °, for example, about 25 °, to move a pawl completely due to the driver completely out of its detent position.
- a release lever of a locking mechanism is basically pivoted by operating a handle to detent a locking mechanism.
- the handle may be an inside door handle or an outside door handle of a motor vehicle.
- Such a handle is usually connected via a linkage or a Bowden cable with the release lever, so as to pivot the trigger lever by pressing the handle. If the linkage or Bowden cable is worn out due to age, this may reduce the pivoting range by which the triggering lever can be swiveled by actuating a handle. It then threatens that the locking mechanism can not open reliably anymore.
- the angle by which a pawl and thus the release lever must be at least pivoted to move them completely out of their detent position and thus open a locking mechanism could be reduced by, for example, the detent surface of the pawl and thus the coverage is reduced.
- a release lever only has to be pivoted by 10 ° -16 °, for example by 12 ° to 14 °, in order to reliably open the locking mechanism.
- the detent surface of the catch of the detent surface of the pawl can be released, causing the ratchet would open unplanned.
- the invention proposes a lock for a door or flap with a locking mechanism of the catch and at least one pawl for locking the catch, wherein preferably the catch in the locked position can initiate an opening or closing moment in the pawl.
- the rotary latch comprises a predetermined bending point which causes the distance between the free ends of the catching arm and the load arm of the rotary latch to increase in the latched state of the locking mechanism under excessive load.
- the predetermined bending point is arranged on the catching arm and comprises at least two recesses which lie on the side of the catching arm which is on the side facing away from the locking bolt of a door or flap in a latched state of the locking mechanism, wherein the recesses are the same or having different extent in the catch inside.
- a locking mechanism according to the invention is thus such that under excessive load, the rotary latch is deformed such that the rotary latch remains in its detent position due to a predetermined bending point of the rotary latch. Despite excessive load, the overlap between the rotary latch and pawl is maintained. Preferably, this even increases. Under one Recess is to be understood as meaning an opening in the rotary latch which extends completely through the rotary latch, in other words the recess forms a clearing in the rotary latch.
- the two recesses may serve a pawl facing the first recess in the catch to define the position of a predetermined bending point on the tentacle.
- a depth of the first recess in the rotary latch that is, a radial extent of the recess in the direction of a pivot point of the rotary latch
- the position of the predetermined bending point can be varied.
- the location of the predetermined bending point can be taken at the same time influence on the overlap between the rotary latch and pawl. If, for example, a recess extending deep into the rotary latch is introduced into the rotary latch, the depth of the recess determines the position of the predetermined bending point.
- the locking mechanism If the locking mechanism is overloaded, as may happen, for example, in an accident, the locking mechanism must not disengage; the catch and the pawl must remain engaged.
- the inventive introduction of a predetermined kink in the rotary latch can support the remain positive. If a part of the catch buckles over the predetermined kink point, then the point of engagement between the catch and the pawl shifts in the direction of a larger overlap, that is unlatching is not only prevented but the locking is additionally secured. As a result, it becomes immediately clear that a relative movement in the region of the point of engagement between the rotary latch and the pawl in the event of an excessive load can be controlled by the position of the predetermined bending point. In other words, it is possible by means of the invention to influence the overlap between the rotary latch and the pawl in the event of a large or oversized load.
- the second, to the first spaced recess is advantageously reduces the weight of the rotary latch and / or positively influenced the buckling behavior.
- the predetermined bending point can be achieved by changing the material properties (elasticity), the thickness, reduced bending stiffness, a cross-sectional reduction and / or a reduction in strength.
- the material may have been weakened at a designated location by subsequent processing so as to provide a predetermined kink.
- the material thickness can be reduced at one point, so as to obtain a predetermined bending point at the desired location. It is conceivable, for example, that the material properties are changed selectively or in areas. This can be done for example in the form of a heat treatment, wherein areas of high and low hardness are generated in the rotary latch.
- the area of lower hardness would act as a predetermined bending point, without the locking would detent. Due to a favorable location of the choice of the predetermined bending point, the overlap changes towards one Magnification, which ensures a secure locking of the locking mechanism.
- the rotary latch and preferably the main load arm can have a cross-sectional reduction.
- a cross-sectional reduction can be provided on one side or on both sides of the rotary latch.
- a two-sided reduction offers the advantage of a symmetrical construction of the rotary latch and can additionally positively influence a possible deformation of the rotary latch.
- two or more cross-sectional reductions are formed on the rotary latch in order to define a predetermined bending point and / or to selectively influence a buckling behavior of the predetermined bending point.
- one or more depressions can also be introduced into the rotary latch in different extension over the rotary latch.
- a plurality of depressions can be introduced, which form continuously increasing extensions or increasing and decreasing extensions in the rotary latch.
- the recesses can be molded, pressed and / or introduced by means of a material removal in the rotary latch.
- reductions of a thickness of the rotary latch are at least partially considered.
- a depression or depressions can thus also be present, for example, as recesses which, for example, are milled or pressed into the rotary latch.
- the depressions may have a cross-sectional shape that can be described as a continuous radius and / or as a U-shaped and / or a sharp notch.
- the lock may include one or two pawls.
- the lock can include a position Vorrast next to a position main rest, in which the locking mechanism can be locked.
- the rotary latch can thus comprise one or two latching surfaces for latching.
- the lock may have a blocking lever with which a pawl is locked in its locked position. By the catch, an opening, a closing or no torque can be introduced into the pawl in the latched position.
- the invention avoids that by excessive load of, for example, 10 kN to 30 kN, the catch surface of the catch to be released from the locking surface of the pawl due to deformation and the locking mechanism can open so unplanned.
- the tentacle arm is bent by excessive load relative to the load arm so that thereby the preservation or increase of the overlap between the rotary latch and pawl is effected.
- By kinking basically increases the distance between the two free ends of tentacle and load arm.
- tolerance compensation is achieved by the invention.
- a scheduled cover could have been reduced due to excessive tolerances in the bearing points of the catch and pawl and / or due to deformations of plastic components to be stored over the life of the castle. Nevertheless, then it does not threaten that the locking mechanism opens unscheduled under excessive load, since then increases the overlap between the rotary latch and pawl.
- the driver moves the pawl, in particular, only out of its detent position when the pawl is not moved out of its detent position due to an initiated opening moment. So the Trigger lever not only moves a blocking lever away from the pawl, but also moves the pawl out of the engagement area of the rotary latch, the release lever must be pivoted by more than 10 °. Only after the release lever has been swiveled by more than 10 ° does a driver attached to the release lever interact with the pawl, so that the pawl is mechanically twisted by the release lever. By the driver is thus ensured that the pawl is moved out of its detent position by the driver when the opening mechanism fails due to the initiated opening torque.
- the ratchet comprises in one embodiment, a pre-locking pawl, which preferably also forms the release lever.
- the rotary latch is preferably provided with an arm for latching in the position Vorrast, which is separated from the usually deformable arm with the latching surface by a recess.
- one arm of a detent pawl preferably a second pre-detent pawl, engages that arm of the detent so as to lock the detent in the pre-detent position.
- a predetermined kink on the tentacle provide and at the same time provide a locking surface for the pre - locking pawl in spatially desired manner.
- This arm for the pre-locking pawl extends in particular beyond the plane which is provided by the base of the rotary latch. This makes it possible to provide a release lever above the pawl for the position main rest, which also forms a pre-locking - pawl.
- the locking mechanism comprises in one embodiment a blocking lever which is able to block the pawl in its locked position.
- the pawl can not leave its detent position when it is blocked by the blocking lever.
- blocking lever By blocking lever, the locking mechanism can be locked particularly reliable.
- pawl and release lever of the locking mechanism are rotatably mounted in one embodiment on a common axis.
- the catch is biased by a spring in the direction of the open position to be able to initiate a moment in the pawl even without the presence of a door seal pressure.
- the release lever is capable of moving a blocking lever of the locking mechanism out of its blocking position.
- a relatively small amount of force is sufficient. If the pawl subsequently moves due to an opening moment, which is introduced by the catch in the pawl, out of its detent position, it is advantageous overall very little effort that must be expended for opening the locking mechanism.
- blocking lever there is a spring for moving the blockage lever to its blocking position.
- the blocking lever can be moved by the spring in its blocking position.
- blocking lever and pawl are designed so that by moving the blocking lever in its blocking position, the pawl is thereby simultaneously moved into its locked position. The number of parts needed is minimized further. This goes hand in hand with a reduction in weight as well as a reduction in the installation space.
- the release lever comprises in one embodiment three lever arms.
- a first lever arm in particular a blocking lever is moved from its blocking position for unlocking the locking mechanism.
- a second lever arm of the release lever By means of a second lever arm of the release lever, the pawl is preferably relieved in the manner described, so at least during opening of the locking mechanism, the spring force is reduced, which is able to move the pawl in the detent position.
- this second lever arm advantageously further comprises a driver for moving the pawl out of its locking position in order to be able to produce compact and simple.
- the third lever arm actuates the release lever, for example by means of a linkage or Bowden cable, preferably with the aid of a handle or electric drive connected thereto.
- the third lever arm is actuated thereby and the release lever is moved for unlatching of the locking mechanism, in particular pivoted about an axis.
- a stop in particular for the purpose of minimizing the installation space and the weight for the second lever arm to prevent the release lever is moved beyond a desired end position.
- the pawl preferably comprises two lever arms. With a lever arm, the catch is locked. On the other lever arm, a mechanism such as a preloaded spring acts to prevent the Pawl using the mechanism, so for example to move a preloaded spring in its locked position.
- This other lever arm of the pawl is optionally detected by a driver of the release lever for unlocking the locking mechanism and moved accordingly, in particular pivoted about an axis.
- a stop for this other lever arm to prevent the pawl from being moved beyond its full detent position.
- a blocking lever for blocking the pawl in its latched position preferably comprises two lever arms.
- a first lever arm of the blocking lever is able in particular to block the pawl in its latched position and / or to move the pawl into its latched position.
- this first lever arm can advantageously also be detected in one embodiment of the release lever and moved out of its blocking position, in particular to be pivoted about an axis.
- the second lever arm of the blocking lever can preferably be moved against a stop, in order to avoid that the blocking lever can be moved beyond an intended end position.
- the provision of a second lever arm also advantageously contributes to shifting the center of gravity of the blocking lever in the direction of the axis about which the blocking lever can be pivoted. This shift of the center of gravity facilitates pivoting of the blocking lever.
- the blocking lever can at the same time form the release lever in order to minimize the parts.
- the release lever is in one embodiment at the same time a pre-locking pawl, which is able to lock the catch in the position Vorrast.
- the locking mechanism can then close a door or flap. It is then not yet scheduled locked in the position main rest. The position main rest is reached starting from the position Vorrast only when the catch is pivoted further in the closed position.
- An inventive locking mechanism is mounted in particular on a usually made of metal lock plate or a usually made of metal lock case.
- a lock also includes a lock housing, which is usually made of plastic and which is able to shield components of the castle to the outside.
- a particular existing plastic lock cover and / or a particular existing plastic cover for a central locking which also serve the shield.
- the lock may, for example, belong to a door or a flap of a building or the door or a flap of a motor vehicle.
- the invention also includes such a lock with a pawl for the position of the main catch of the catch (also called “main pawl”), a pawl for the position Vorrast the catch (also called “pre-locking pawl”) and advantageously a blocking lever for said Main ratchet pawl.
- a lock is in print DE 10 2008 061 524 A1 mentioned.
- a lock according to the invention may also comprise, in addition to a blocking lever, only one pawl for locking the catch in a position "pre-rest position” and a position "main rest”.
- the catch has a fork-shaped inlet slot into which a locking pin of a door or flap enters when the vehicle door or vehicle door is closed.
- the locking pin then rotates the catch from an open position to a locked position. In the locked position, the locking bolt can no longer leave the inlet slot of the rotary latch.
- the pawl locks the catch in the locked position, so that it can not be moved back into the open position.
- a lock there are components such as pawl, blocking lever or rotary latch, which can and should be pivoted.
- components such as pawl, blocking lever or rotary latch, which can and should be pivoted.
- prestressed spring in particular leg spring, with which a desired pivoting movement of such a component is effected by spring force.
- Such a prestressed spring is capable, for example, of moving a pawl into its detent position, of moving a blocking lever into its blocking position or of turning a catch into its open position.
- FIG. 1 a locking mechanism of a lock of a motor vehicle comprising a rotary latch 1, a pawl 2, a blocking lever 3 are shown, which are rotatably mounted on a lock case 4.
- the rotary latch 1 can be pivoted about its axis 5.
- the pawl 2 can be pivoted about its axis 6.
- the blocking lever 3 can be pivoted about its axis 7. It should be noted that the invention is explained on a consisting of several pawls, so-called Mehrklinkengesperre existing lock. However, the invention expressly refers not only to Mehrklinkengesperre but is transferable to all other locks with a locking mechanism.
- the pawl 2 locked with its locking surface 8, the rotary latch 1, which rests with its locking surface 9 on the locking surface 8 of the pawl.
- the position of the locking surfaces 8, 9 to each other in this embodiment is chosen such that the rotary latch 1 initiates an opening moment in the pawl 2.
- the pawl 2 can be pivoted out of its locked position shown in the case of FIG. 1 by turning it around the axis 6 in a clockwise direction when the Blockade lever 3 is moved out of its blocking position by actuating an internal or external operation.
- the rotary latch 1 has a catching arm 10 and a load arm 11.
- the tentacle 10 is provided with a predetermined kink 12.
- the taper can be provided by a preferably arcuate recess from one side or as shown from both sides of the tentacle. If an excessively large force, for example, due to a Chrashfalls exerted on the held by the catch 1 locking bolt 13 and so pulled the load arm 11 in the opening direction, then the tentacle 10 buckles due to the predetermined bending point 12 around the predetermined bending point 12 around and that opposite to the load arm 10 opposite to the clockwise direction. This deformation can be plastic and / or elastic. As a result, the point of engagement shifts between the latching surface 9 and the latching surface 8 in such a way that the overlap between the two latching surfaces 8 and 9 is increased.
- the rotary latch 1 has an arm 14 which extends into a plane which is located above the plane in which the base surfaces of the rotary latch 1 and pawl 3 are located. Above the pawl 2, an unillustrated release lever is provided on the axis 6, which at the same time forms a pre-locking pawl. In the pre-rest position, the arm 14 rests against this pre-locking pawl, so that the locking mechanism can additionally be latched in a pre-locking position.
- the Vorrastarm 14 is formed integrally with the rotary latch 1 in this embodiment as a fold. But it is also conceivable to form the Vorrastarm 14 as a separate bolt and to attach to the catch.
- the catch 1 can also have an arm 15, which can be moved against a stop, for example, to prevent excessive pivoting of the catch.
- the tentacle 10 does not necessarily have a tapered area, that is to say a recess 12, in order to be able to be deformed in the desired manner.
- one or more depressions can be introduced into the rotary latch on one or both sides.
- the rotary latch may have undergone a heat treatment, so that a predetermined bending point is formed. It is therefore particularly important that the rotary latch is designed so that in case of excessive load by the locking pin 13, the rotary latch is deformed so that the overlap between the locking surfaces 8 and 9 at least not smaller. Preferably, this coverage is greater even under excessive load.
- a prestressed leg spring 16 is shown, which is able to move the blocking lever 3 in the blocking position.
- Blocking lever 3 and pawl 2 are shaped so that the blocking lever 3 is able to move the pawl 2 into its locking position.
- a mounted on the lock case 4 stop 17 prevents the pawl 2 can be moved counterclockwise opposite to its locking position out.
- a recess 18, which is arranged on the side of the catching arm 10 of the rotary latch 1, which faces the locking bolt 13, is additionally provided. It is thus obtained a relatively long physically effective lever without having to increase the space accordingly, as compared to the case that a notch on the side facing away from the locking bolt side is provided. In the case of excessive loading then the coverage increases particularly strong. A notch occurs when the locking bolt, starting from the open position via a step-like course 19 of the contour of the Fangarms must be moved to in the in the FIG. 1 to reach the closed position shown.
Landscapes
- Lock And Its Accessories (AREA)
Description
Die Erfindung betrifft ein Schloss für eine Klappe oder eine Tür mit den Merkmalen des Oberbegriffs des Anspruchs 1. Bei der Tür oder Klappe kann es sich um eine Tür oder Klappe eines Kraftfahrzeugs oder eines Gebäudes handeln.The invention relates to a lock for a flap or a door having the features of the preamble of
Eine Drehfalle verfügt über einen Lastarm und einen Fangarm. Der Lastarm verhindert im Fall eines verrasteten Gesperres, dass ein Schließbolzen eine Tür oder einer Klappe das Gesperre verlassen kann. Wird eine Tür oder eine Klappe geschlossen, so wird der Schließbolzen gegen den Fangarm bewegt und verschwenkt diesen und damit auch die Drehfalle in Richtung Schließstellung. Der Fangarm ist auch als Hauptlastarm bezeichenbar, beide Begriffe werden im Folgenden als Synonyme verwendet.A rotary latch has a load arm and a tentacle. In the case of a locked locking mechanism, the load arm prevents a locking bolt from leaving a door or a flap. If a door or a flap is closed, the locking pin is moved against the catching arm and pivots it and thus also the catch in the direction of the closed position. The tentacle is also denominated as a main load arm, both terms are used in the following as synonyms.
Die Druckschrift
Aus welchen Gründen auch immer kann bei einem Gesperre mit einem vorgenannten öffnenden Moment der Fall auftreten, dass das öffnende Moment nicht genügt, um die Sperrklinke aus ihrer Raststellung heraus zu schwenken. Um dennoch sicherzustellen, dass das Gesperre auch im Fall einer solchen Störung öffnet, gibt es einen Mitnehmer, der beispielsweise am Auslösehebel und/oder wie in der
Damit das Gesperre aufgrund des Mitnehmers geöffnet werden kann, muss der zum Beispiel am Auslösehebel vorgesehene Mitnehmer über einen hinreichend großen Winkel verschwenkt werden können. Regelmäßig hinreichend ist ein Winkel von 20° bis 30°, so zum Beispiel ca. 25°, um eine Sperrklinke allein aufgrund des Mitnehmers vollständig aus ihrer Raststellung heraus zu bewegen.Thus, the locking mechanism can be opened due to the driver, the provided for example on the trigger lever driver must be able to be pivoted over a sufficiently large angle. Regularly sufficient is an angle of 20 ° to 30 °, for example, about 25 °, to move a pawl completely due to the driver completely out of its detent position.
Ein Auslösehebel eines Gesperres wird grundsätzlich durch Betätigen eines Griffs verschwenkt, um ein Gesperre zu entrasten. Der Griff kann ein Türinnengriff oder ein Türaußengriff eines Kraftfahrzeugs sein. Ein solcher Griff ist in der Regel über ein Gestänge oder über einen Bowdenzug mit dem Auslösehebel verbunden, um so den Auslösehebel durch Betätigen des Griffes zu verschwenken. Leiert altersbedingt das Gestänge oder der Bowdenzug aus, so kann sich dadurch der Schwenkbereich verringern, um den der Auslösehebel durch Betätigen eines Griffes verschwenkt werden kann. Es droht dann, dass sich das Gesperre nicht mehr zuverlässig öffnen lässt.
Der Winkel, um den eine Sperrklinke und damit auch der Auslösehebel wenigstens verschwenkt werden muss, um diese vollständig aus ihrer Raststellung heraus zu bewegen und damit ein Gesperre zu öffnen, könnte verringert werden, indem beispielsweise die Rastfläche der Sperrklinke und damit die Überdeckung verkleinert wird. Auf diese Weise könnte beispielsweise erreicht werden, dass ein Auslösehebel nur noch um 10°-16°, so zum Beispiel um 12° bis 14° verschwenkt werden muss, um das Gesperre zuverlässig öffnen zu können. Bei übermäßiger Belastung insbesondere in der Größenordnung von 20-30 kN kann sich jedoch dann die Rastfläche der Drehfalle von der Rastfläche der Sperrklinke lösen, wodurch sich das Gesperre unplanmäßig öffnen würde. Versuche haben ergeben, dass bei einem üblichen Gesperre weder die Drehfalle noch die Sperrklinke durch übermäßige Last erkennbar verzogen oder deformiert werden. Es werden vielmehr die Aufnahmepunkte der Achsen der Drehfalle und der Sperrklinke sowie die Schlossplatte oder der Schlosskasten, an dem das Gesperre befestigt ist, leicht erkennbar deformiert. Unterstützt werden kann das unplanmäßige Öffnen durch Toleranzen in den Komponenten des Gesperres.A release lever of a locking mechanism is basically pivoted by operating a handle to detent a locking mechanism. The handle may be an inside door handle or an outside door handle of a motor vehicle. Such a handle is usually connected via a linkage or a Bowden cable with the release lever, so as to pivot the trigger lever by pressing the handle. If the linkage or Bowden cable is worn out due to age, this may reduce the pivoting range by which the triggering lever can be swiveled by actuating a handle. It then threatens that the locking mechanism can not open reliably anymore.
The angle by which a pawl and thus the release lever must be at least pivoted to move them completely out of their detent position and thus open a locking mechanism could be reduced by, for example, the detent surface of the pawl and thus the coverage is reduced. In this way, it could be achieved, for example, that a release lever only has to be pivoted by 10 ° -16 °, for example by 12 ° to 14 °, in order to reliably open the locking mechanism. In case of excessive load, in particular in the order of 20-30 kN, however, then the detent surface of the catch of the detent surface of the pawl can be released, causing the ratchet would open unplanned. Experiments have shown that in a conventional locking neither the catch nor the pawl be distorted or deformed by excessive load recognizable. Rather, the receiving points of the axes of the catch and the pawl and the lock plate or the lock case on which the locking mechanism is attached, easily deformed recognizable. The unscheduled opening can be supported by tolerances in the components of the locking mechanism.
Vor diesem Hintergrund schlägt die Erfindung den Gegenstand des unabhängigen Anspruchs vor. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.
Die Erfindung schlägt ein Schloss für eine Tür oder Klappe mit einem Gesperre aus Drehfalle und mindestens einer Sperrklinke für ein Verrasten der Drehfalle vor, wobei vorzugsweise die Drehfalle in der Raststellung ein öffnendes oder schließendes Moment in die Sperrklinke einleiten kann. Die Drehfalle umfasst erfindungsgemäß eine Sollknickstelle, die bewirkt, dass sich der Abstand zwischen den freien Enden von Fangarm und Lastarm der Drehfalle im verrasteten Zustand des Gesperres bei übermäßiger Belastung vergrößert. Es wird erfindungsgemäß vorgeschlagen, dass die Sollknickstelle am Fangarm angeordnet ist und mindestens zwei Ausnehmungen umfasst, die auf der Seite des Fangarms, die auf der dem Schließbolzen einer Tür oder Klappe in einem verrasteten Zustand des Gesperres abgewandten Seite liegt, wobei die Ausnehmungen eine gleich oder unterschiedliche Erstreckung in die Drehfalle hinein aufweist. Eine übermäßige Belastung liegt grundsätzlich nicht vor, wenn im verschlossenen Zustand einer Tür oder einer Klappe keine zusätzlichen äußeren Kräfte (zusätzlich zu einer intern auftretenden Kraft wie zum Beispiel aufgrund eines Türdichtungsdrucks) in das Gesperre eingeleitet werden. Eine übermäßige Belastung eines Gesperres kann insbesondere in einem Crashfall auftreten, wenn in den Schließbolzen einer Tür oder Klappe hohe Kräfte in Öffnungsrichtung der Tür oder Klappe eingeleitet werden. Ein Gesperre gemäß der Erfindung ist somit so beschaffen, dass bei übermäßiger Belastung die Drehfalle derart deformiert wird, dass die Drehfalle in ihrer Raststellung verbleibt und zwar aufgrund einer Sollknickstelle der Drehfalle. Trotz übermäßiger Belastung bleibt die Überdeckung zwischen Drehfalle und Sperrklinke erhalten. Vorzugsweise vergrößert diese sich sogar. Unter einer Ausnehmung ist eine Öffnung in der Drehfalle zu verstehen, die sich vollständig durch die Drehfalle hindurch erstreckt, mit anderen Worten bildet die Ausnehmung eine Freimachung in der Drehfalle.
Against this background, the invention proposes the subject matter of the independent claim. Advantageous embodiments emerge from the subclaims.
The invention proposes a lock for a door or flap with a locking mechanism of the catch and at least one pawl for locking the catch, wherein preferably the catch in the locked position can initiate an opening or closing moment in the pawl. According to the invention, the rotary latch comprises a predetermined bending point which causes the distance between the free ends of the catching arm and the load arm of the rotary latch to increase in the latched state of the locking mechanism under excessive load. It is proposed according to the invention that the predetermined bending point is arranged on the catching arm and comprises at least two recesses which lie on the side of the catching arm which is on the side facing away from the locking bolt of a door or flap in a latched state of the locking mechanism, wherein the recesses are the same or having different extent in the catch inside. An excessive load is not present when in the closed state of a door or a flap no additional external forces (in addition to an internally occurring force such as due to a door seal pressure) are introduced into the locking mechanism. Excessive loading of a locking mechanism can occur, in particular in the event of a crash, when high forces are introduced into the locking bolt of a door or flap in the opening direction of the door or flap. A locking mechanism according to the invention is thus such that under excessive load, the rotary latch is deformed such that the rotary latch remains in its detent position due to a predetermined bending point of the rotary latch. Despite excessive load, the overlap between the rotary latch and pawl is maintained. Preferably, this even increases. Under one Recess is to be understood as meaning an opening in the rotary latch which extends completely through the rotary latch, in other words the recess forms a clearing in the rotary latch.
Von den beiden Ausnehmungen kann eine der Sperrklinke zugewandte erste Ausnehmung in der Drehfalle zur Definition der Lage einer Sollknickstelle am Fangarm dienen. So kann beispielsweise in Abhängigkeit einer Tiefe der ersten Ausnehmung in der Drehfalle, das heißt einer radialen Erstreckung der Ausnehmung in Richtung eines Drehpunktes der Drehfalle, die Lage der Sollknickstelle variiert werden. Mit der Lage der Sollknickstelle kann gleichzeitig Einfluss auf die Überdeckung zwischen Drehfalle und Sperrklinke genommen werden. Wird beispielsweise eine sich tief in die Drehfalle hinein erstreckende Ausnehmung in die Drehfalle eingebracht, so bestimmt die Tiefe der Ausnehmung die Lage der Sollknickstelle.Of the two recesses may serve a pawl facing the first recess in the catch to define the position of a predetermined bending point on the tentacle. Thus, for example, depending on a depth of the first recess in the rotary latch, that is, a radial extent of the recess in the direction of a pivot point of the rotary latch, the position of the predetermined bending point can be varied. With the location of the predetermined bending point can be taken at the same time influence on the overlap between the rotary latch and pawl. If, for example, a recess extending deep into the rotary latch is introduced into the rotary latch, the depth of the recess determines the position of the predetermined bending point.
Wird das Gesperre übermäßig belastet, wie dies beispielsweise bei einem Unfall passieren kann, so darf das Gesperre nicht entrasten, Drehfalle und Sperrklinke müssen im Eingriff verbleiben. Das erfindungsgemäße Einbringen einer Sollknickstelle in die Drehfalle kann das im Eingriff bleiben positiv unterstützen. Knickt ein Teil der Drehfalle über die Sollknickstelle hinweg, so verschiebt sich der Eingriffspunkt zwischen Drehfalle und Sperrklinke in Richtung einer größeren Überdeckung, das heißt ein Entrasten wird nicht nur verhindert sondern das Gesperre wird zusätzlich gesichert. Hierdurch wird unmittelbar deutlich, dass durch die Lage der Sollknickstelle eine Relativbewegung im Bereich des Eingriffspunkts zwischen Drehfalle und Sperrklinke im Falle einer übermäßigen Belastung steuerbar ist. Mit anderen Worten ist es mittels der Erfindung möglich Einfluss auf die Überdeckung zwischen Drehfalle und Sperrklinke im Falle einer großen oder übergroßen Last zu nehmen.If the locking mechanism is overloaded, as may happen, for example, in an accident, the locking mechanism must not disengage; the catch and the pawl must remain engaged. The inventive introduction of a predetermined kink in the rotary latch can support the remain positive. If a part of the catch buckles over the predetermined kink point, then the point of engagement between the catch and the pawl shifts in the direction of a larger overlap, that is unlatching is not only prevented but the locking is additionally secured. As a result, it becomes immediately clear that a relative movement in the region of the point of engagement between the rotary latch and the pawl in the event of an excessive load can be controlled by the position of the predetermined bending point. In other words, it is possible by means of the invention to influence the overlap between the rotary latch and the pawl in the event of a large or oversized load.
Aus einer tiefen Ausnehmung in der Drehfalle resultiert ein langer Hebelarm und somit eine Vergrößerung einer Überdeckung im Lastfall. Als Hebelarm wird der Abstand zwischen der Lage der Knickstelle (Sollknickstelle) und dem Eingriffspunkt zwischen Drehfalle und Sperrklinke bezeichnet. Auch im Falle einer geringen, das heißt kleinen Ausnehmung in die Drehfalle hinein kommt es ebenfalls zu eine Überdeckungsvergrößerung. Der kürzere Hebelarm führt aber zu einer geringeren Verschiebung des Eingriffspunkts zwischen Drehfalle und Sperrklinke hin zu einer größeren Überdeckung.From a deep recess in the rotary latch results in a long lever arm and thus an increase in coverage in the load case. As a lever arm, the distance between the position of the kink (Sollknickstelle) and the point of engagement between the catch and pawl is called. Even in the case of a small, that is small recess in the catch it also comes to a coverage increase. But the shorter lever arm leads to a smaller shift of the engagement point between the catch and pawl towards a larger coverage.
Die zweite, zu der ersten beabstandete Ausnehmung wird vorteilhaft das Gewicht der Drehfalle reduziert und/oder das Knickverhalten positiv beeinflusst. Darüber hinaus besteht die Möglichkeit beispielsweise die Ausnehmung in die Drehfalle derart einzubringen, dass das umgeformte Material gleichzeitig als Anschlag für eine Vorrast des Gesperres dient.The second, to the first spaced recess is advantageously reduces the weight of the rotary latch and / or positively influenced the buckling behavior. In addition, there is the possibility, for example, to introduce the recess into the catch in such a way that the formed material simultaneously serves as a stop for a preliminary catch of the catch.
Die Sollknickstelle kann durch geänderte Materialeigenschaften (Elastizität), der Dicke, reduzierter Biegesteifigkeit, einer Querschnittsreduzierung und/oder einer Festigkeitsreduzierung erzielt werden. Beispielsweise kann das Material an einer vorgesehenen Stelle durch nachträgliche Bearbeitung geschwächt worden sein, um so eine Sollknickstelle bereitzustellen. Die Materialstärke kann an einer Stelle reduziert sein, um so eine Sollknickstelle an gewünschter Stelle zu erhalten. Vorstellbar ist es beispielsweise, dass die Materialeigenschaften punktuell oder bereichsweise verändert werden. Dies kann zum Beispiel in Form einer Wärmebehandlung erfolgen, wobei Bereiche großer und geringer Härte in der Drehfalle erzeugt werden. Im Falle einer übermäßigen Last, die beispielsweise bei einem Unfall auf das Schloss und somit das Gesperre einwirken kann, würde der Bereich der geringeren Härte als Sollknickstelle fungieren, ohne dass das Gesperre entrasten würde. Durch eine günstige Lage der Wahl der Sollknickstelle verändert sich die Überdeckung hin zu einer Vergrößerung, wodurch ein sicheres Verrasten des Gesperres gewährleistet wird.The predetermined bending point can be achieved by changing the material properties (elasticity), the thickness, reduced bending stiffness, a cross-sectional reduction and / or a reduction in strength. For example, the material may have been weakened at a designated location by subsequent processing so as to provide a predetermined kink. The material thickness can be reduced at one point, so as to obtain a predetermined bending point at the desired location. It is conceivable, for example, that the material properties are changed selectively or in areas. This can be done for example in the form of a heat treatment, wherein areas of high and low hardness are generated in the rotary latch. In the case of an excessive load, which can act on the lock and thus the ratchet in an accident, for example, the area of lower hardness would act as a predetermined bending point, without the locking would detent. Due to a favorable location of the choice of the predetermined bending point, the overlap changes towards one Magnification, which ensures a secure locking of the locking mechanism.
Alternativ oder in Kombination mit einer Beeinflussung der Materialeigenschaften kann die Drehfalle und vorzugsweise der Hauptlastarm eine Querschnittsreduzierung aufweisen. Eine Querschnittsreduzierung kann einseitig oder beidseitig an der Drehfalle vorgesehen sein. Eine beidseitige Reduzierung bietet den Vorteil eines symmetrischen Aufbaus der Drehfalle und kann zusätzlich eine mögliche Deformierung der Drehfalle positiv beeinflussen. Vorstellbar ist es hierbei auch, dass zwei oder mehr Querschnittsreduzierungen an der Drehfalle ausgebildet werden um eine Sollknickstelle zu definieren und/oder ein Knickverhalten der Sollknickstelle gezielt zu beeinflussen. Dabei können ein oder mehrere Vertiefungen auch in unterschiedlicher Erstreckung über die Drehfalle hinweg in die Drehfalle eingebracht werden. So können mehrere Vertiefungen eingebracht sein, die kontinuierlich zunehmende Erstreckungen oder zu- und wieder abnehmende Erstreckungen in der Drehfalle bilden.Alternatively or in combination with influencing the material properties, the rotary latch and preferably the main load arm can have a cross-sectional reduction. A cross-sectional reduction can be provided on one side or on both sides of the rotary latch. A two-sided reduction offers the advantage of a symmetrical construction of the rotary latch and can additionally positively influence a possible deformation of the rotary latch. It is also conceivable here that two or more cross-sectional reductions are formed on the rotary latch in order to define a predetermined bending point and / or to selectively influence a buckling behavior of the predetermined bending point. In this case, one or more depressions can also be introduced into the rotary latch in different extension over the rotary latch. Thus, a plurality of depressions can be introduced, which form continuously increasing extensions or increasing and decreasing extensions in the rotary latch.
In einer Ausführungsform der Erfindung können die Vertiefungen eingeformt, eingepresst und/ oder mittels eines Materialabtrags in die Drehfalle eingebracht sein. Als Vertiefungen werden hierbei zumindest bereichsweise Reduzierungen einer Dicke der Drehfalle angesehen. Eine Vertiefung oder Vertiefungen können somit beispielsweise auch als Ausnehmungen vorliegen, die zum Beispiel in die Drehfalle eingefräst oder eingedrückt sind.In one embodiment of the invention, the recesses can be molded, pressed and / or introduced by means of a material removal in the rotary latch. As wells, reductions of a thickness of the rotary latch are at least partially considered. A depression or depressions can thus also be present, for example, as recesses which, for example, are milled or pressed into the rotary latch.
Die Vertiefungen können in einer weiteren Ausgestaltungsform eine als kontinuierlichen Radius und/oder als U-förmig und/oder als spitze Kerbe beschreibbare Querschnittsform aufweisen. Dabei kann mittels der Querschnittsform in vorteilhaftere Weise Einfluss auf die Kerbzahl und somit die Lage der Sollknickstelle genommen werden. Das Schloss kann eine oder zwei Sperrklinken umfassen. Das Schloss kann neben einer Position Hauptrast eine Position Vorrast umfassen, in der das Gesperre verrastet werden kann. Die Drehfalle kann also eine oder zwei Rastflächen für ein Verrasten umfassen. Das Schloss kann einen Blockadehebel aufweisen, mit dem eine Sperrklinke in ihrer Raststellung blockiert wird. Durch die Drehfalle kann in die Sperrklinke in der verrasteten Position ein öffnendes, ein schließendes oder kein Drehmoment eingeleitet werden.In a further embodiment, the depressions may have a cross-sectional shape that can be described as a continuous radius and / or as a U-shaped and / or a sharp notch. In this case, by means of the cross-sectional shape in a more advantageous manner influence on the notch number and thus the Position of the predetermined bending point to be taken. The lock may include one or two pawls. The lock can include a position Vorrast next to a position main rest, in which the locking mechanism can be locked. The rotary latch can thus comprise one or two latching surfaces for latching. The lock may have a blocking lever with which a pawl is locked in its locked position. By the catch, an opening, a closing or no torque can be introduced into the pawl in the latched position.
Durch die Erfindung wird vermieden, dass durch übermäßige Belastung von zum Beispiel 10 kN bis 30 kN die Rastfläche der Drehfalle sich von der Rastfläche der Sperrklinke aufgrund von Deformationen lösen und sich das Gesperre so unplanmäßig öffnen kann. Insbesondere wird der Fangarm durch übermäßige Belastung relativ zum Lastarm so abgeknickt, dass hierdurch der Erhalt oder eine Vergrößerung der Überdeckung zwischen Drehfalle und Sperrklinke bewirkt wird. Durch das Abknicken vergrößert sich grundsätzlich der Abstand zwischen den beiden freien Enden von Fangarm und Lastarm.The invention avoids that by excessive load of, for example, 10 kN to 30 kN, the catch surface of the catch to be released from the locking surface of the pawl due to deformation and the locking mechanism can open so unplanned. In particular, the tentacle arm is bent by excessive load relative to the load arm so that thereby the preservation or increase of the overlap between the rotary latch and pawl is effected. By kinking basically increases the distance between the two free ends of tentacle and load arm.
Durch die Erfindung gelingt darüber hinaus ein Toleranzausgleich. Eine planmäßig vorgesehene Überdeckung könnte aufgrund zu großer Toleranzen in den Lagerpunkten von Drehfalle und Sperrklinke und/oder aufgrund von Verformungen von zu lagernden Kunststoffbauteilen über die Lebensdauer des Schlosses verringert worden sein. Dennoch droht dann nicht, dass sich das Gesperre bei übermäßiger Belastung unplanmäßig öffnet, da sich dann die Überdeckung zwischen Drehfalle und Sperrklinke vergrößert.In addition, tolerance compensation is achieved by the invention. A scheduled cover could have been reduced due to excessive tolerances in the bearing points of the catch and pawl and / or due to deformations of plastic components to be stored over the life of the castle. Nevertheless, then it does not threaten that the locking mechanism opens unscheduled under excessive load, since then increases the overlap between the rotary latch and pawl.
Der Mitnehmer bewegt die Sperrklinke insbesondere nur dann aus ihrer Raststellung heraus, wenn die Sperrklinke nicht aufgrund eines eingeleiteten öffnenden Moments aus ihrer Raststellung heraus bewegt wird. Damit der Auslösehebel nicht nur einen Blockadehebel von der Sperrklinke weg bewegt, sondern auch die Sperrklinke aus dem Eingriffsbereichs der Drehfalle heraus bewegt, muss der Auslösehebel um mehr als 10° verschwenkt werden. Erst nach dem Verschwenken des Auslösehebels um mehr als 10° wirkt ein am Auslösehebel befestigter Mitnehmer mit der Sperrklinke zusammen, so dass die Sperrklinke vom Auslösehebel mechanisch verdreht wird. Durch den Mitnehmer wird also sichergestellt, dass die Sperrklinke aus ihrer Raststellung durch den Mitnehmer heraus bewegt wird, wenn der Öffnungsmechanismus aufgrund des eingeleiteten öffnenden Drehmoments versagt.The driver moves the pawl, in particular, only out of its detent position when the pawl is not moved out of its detent position due to an initiated opening moment. So the Trigger lever not only moves a blocking lever away from the pawl, but also moves the pawl out of the engagement area of the rotary latch, the release lever must be pivoted by more than 10 °. Only after the release lever has been swiveled by more than 10 ° does a driver attached to the release lever interact with the pawl, so that the pawl is mechanically twisted by the release lever. By the driver is thus ensured that the pawl is moved out of its detent position by the driver when the opening mechanism fails due to the initiated opening torque.
Das Gesperre umfasst in einer Ausführungsform eine Vorrast-Sperrklinke, die vorzugsweise zugleich den Auslösehebel bildet. Insbesondere bei dieser Ausführungsform ist die Drehfalle vorzugsweise mit einem Arm für ein Verrasten in der Position Vorrast versehen, der von dem in der Regel deformierbaren Arm mit der Rastfläche durch eine Ausnehmung getrennt ist. In der Position Vorrast liegt dann ein Arm einer Sperrklinke, vorzugsweise einer zweiten Vorrast - Sperrklinke an diesem Arm der Drehfalle an, um so die Drehfalle in der Position Vorrast zu verrasten. Diese Ausführungsform ermöglicht es, eine Sollknickstelle am Fangarm vorzusehen und zugleich eine Rastfläche für die Vorrast - Sperrklinke in räumlich gewünschter Weise bereitzustellen. Dieser Arm für die Vorrast - Sperrklinke reicht insbesondere über die Ebene hinaus, die durch die Grundfläche der Drehfalle bereitgestellt wird. Hierdurch wird es möglich, oberhalb der Sperrklinke für die Position Hauptrast einen Auslösehebel vorzusehen, der zugleich eine Vorrast - Sperrklinke bildet.The ratchet comprises in one embodiment, a pre-locking pawl, which preferably also forms the release lever. In particular, in this embodiment, the rotary latch is preferably provided with an arm for latching in the position Vorrast, which is separated from the usually deformable arm with the latching surface by a recess. In the pre-rest position, one arm of a detent pawl, preferably a second pre-detent pawl, engages that arm of the detent so as to lock the detent in the pre-detent position. This embodiment makes it possible, a predetermined kink on the tentacle provide and at the same time provide a locking surface for the pre - locking pawl in spatially desired manner. This arm for the pre-locking pawl extends in particular beyond the plane which is provided by the base of the rotary latch. This makes it possible to provide a release lever above the pawl for the position main rest, which also forms a pre-locking - pawl.
Das Gesperre umfasst in einer Ausführungsform einen Blockadehebel, der die Sperrklinke in ihrer Raststellung zu blockieren vermag. Die Sperrklinke kann ihre Raststellung nicht verlassen, wenn diese durch den Blockadehebel blockiert wird. Durch den Blockadehebel kann das Gesperre besonders zuverlässig verrastet werden.The locking mechanism comprises in one embodiment a blocking lever which is able to block the pawl in its locked position. The pawl can not leave its detent position when it is blocked by the blocking lever. By blocking lever, the locking mechanism can be locked particularly reliable.
Um eine kompakte Bauweise mit einer geringen Anzahl an Teilen weiter verbessert zu ermöglichen, sind Sperrklinke und Auslösehebel des Gesperres in einer Ausführungsform auf einer gemeinsamen Achse drehbar gelagert.In order to enable a compact design with a small number of parts further improved, pawl and release lever of the locking mechanism are rotatably mounted in one embodiment on a common axis.
Vorteilhaft ist die Drehfalle durch eine Feder in Richtung Öffnungsstellung vorgespannt, um auch ohne Vorhandensein eines Türdichtungsdrucks ein Moment in die Sperrklinke einleiten zu können.Advantageously, the catch is biased by a spring in the direction of the open position to be able to initiate a moment in the pawl even without the presence of a door seal pressure.
In einer Ausführungsform der Erfindung vermag der Auslösehebel einen Blockadehebel des Gesperres aus seiner blockierenden Stellung heraus zu bewegen. Hierfür genügt grundsätzlich ein relativ geringer Kraftaufwand. Wird die Sperrklinke im Anschluss daran aufgrund eines öffnenden Moments, welches durch die Drehfalle in die Sperrklinke eingeleitet wird, aus ihrer Raststellung heraus bewegt, so ist vorteilhaft insgesamt der Kraftaufwand sehr gering, der für ein Öffnen des Gesperres aufgewendet werden muss.In one embodiment of the invention, the release lever is capable of moving a blocking lever of the locking mechanism out of its blocking position. For this purpose, in principle, a relatively small amount of force is sufficient. If the pawl subsequently moves due to an opening moment, which is introduced by the catch in the pawl, out of its detent position, it is advantageous overall very little effort that must be expended for opening the locking mechanism.
In einer Ausführungsform gibt es eine Feder für ein Bewegen des Blockadehebels in seine blockierende Stellung. Auf einfache und zuverlässige Weise kann der Blockadehebel durch die Feder in seine blockierende Stellung bewegt werden. In einer Ausführungsform sind Blockadehebel und Sperrklinke so ausgeführt, dass durch Bewegen des Blockadehebels in seine blockierende Stellung die Sperrklinke dadurch zugleich in ihre Raststellung bewegt wird. Die Zahl der benötigten Teile wird so weiter minimiert. Dies geht einher mit einer Reduzierung des Gewichts sowie mit einer Reduzierung des Bauraums.In one embodiment, there is a spring for moving the blockage lever to its blocking position. On simple and reliable way, the blocking lever can be moved by the spring in its blocking position. In one embodiment, blocking lever and pawl are designed so that by moving the blocking lever in its blocking position, the pawl is thereby simultaneously moved into its locked position. The number of parts needed is minimized further. This goes hand in hand with a reduction in weight as well as a reduction in the installation space.
Der Auslösehebel umfasst in einer Ausführungsform drei Hebelarme. Mithilfe eines ersten Hebelarms wird insbesondere ein Blockadehebel aus seiner blockierenden Stellung für ein Entriegeln des Gesperres bewegt. Mithilfe eines zweiten Hebelarms des Auslösehebels wird vorzugsweise die Sperrklinke in beschriebener Weise entlastet, also während eines Öffnens des Gesperres die Federkraft zumindest reduziert, die die Sperrklinke in Richtung Raststellung zu bewegen vermag. Vorzugsweise dieser zweite Hebelarm umfasst ferner vorteilhaft einen Mitnehmer für ein Herausbewegen der Sperrklinke aus ihrer verriegelnden Stellung, um kompakt und einfach herstellen zu können. Mit dem dritten Hebelarm wird der Auslösehebel betätigt, so zum Beispiel mithilfe eines Gestänges oder Bowdenzugs sowie vorzugsweise mithilfe eines damit verbundenen Griffs oder eines elektrischen Antriebs. Wird der Griff betätigt oder der elektrische Antrieb in Gang gesetzt, so wird damit auch der dritte Hebelarm betätigt und der Auslösehebel für ein Entrasten des Gesperres bewegt und zwar insbesondere um eine Achse verschwenkt. Vorteilhaft gibt es darüber hinaus einen Anschlag insbesondere zwecks Minimierung des Bauraums sowie des Gewichts für den zweiten Hebelarm, um zu verhindern, dass der Auslösehebel über eine gewünschte Endstellung hinaus bewegt wird.The release lever comprises in one embodiment three lever arms. By means of a first lever arm in particular a blocking lever is moved from its blocking position for unlocking the locking mechanism. By means of a second lever arm of the release lever, the pawl is preferably relieved in the manner described, so at least during opening of the locking mechanism, the spring force is reduced, which is able to move the pawl in the detent position. Preferably, this second lever arm advantageously further comprises a driver for moving the pawl out of its locking position in order to be able to produce compact and simple. The third lever arm actuates the release lever, for example by means of a linkage or Bowden cable, preferably with the aid of a handle or electric drive connected thereto. When the handle is actuated or the electric drive is actuated, the third lever arm is actuated thereby and the release lever is moved for unlatching of the locking mechanism, in particular pivoted about an axis. Advantageously, there is also a stop in particular for the purpose of minimizing the installation space and the weight for the second lever arm to prevent the release lever is moved beyond a desired end position.
Die Sperrklinke umfasst vorzugsweise zwei Hebelarme. Mit einem Hebelarm wird die Drehfalle verrastet. Auf den anderen Hebelarm wirkt ein Mechanismus wie zum Beispiel eine vorgespannte Feder ein, um die Sperrklinke mithilfe des Mechanismus, also zum Beispiel einer vorgespannten Feder in ihre Raststellung bewegen zu können. Dieser andere Hebelarm der Sperrklinke wird optional durch einen Mitnehmer des Auslösehebels für ein Entriegeln des Gesperres erfasst und entsprechend bewegt und zwar insbesondere um eine Achse verschwenkt. Vorteilhaft gibt es darüber hinaus einen Anschlag für diesen anderen Hebelarm, um zu verhindern, dass die Sperrklinke über ihre vollständige Raststellung hinaus bewegt wird.The pawl preferably comprises two lever arms. With a lever arm, the catch is locked. On the other lever arm, a mechanism such as a preloaded spring acts to prevent the Pawl using the mechanism, so for example to move a preloaded spring in its locked position. This other lever arm of the pawl is optionally detected by a driver of the release lever for unlocking the locking mechanism and moved accordingly, in particular pivoted about an axis. Advantageously, there is also a stop for this other lever arm to prevent the pawl from being moved beyond its full detent position.
Ein Blockadehebel für ein Blockieren der Sperrklinke in ihrer verrasteten Stellung umfasst vorzugsweise zwei Hebelarme. Ein erster Hebelarm des Blockadehebels vermag insbesondere die Sperrklinke in ihrer verrasteten Stellung zu blockieren und/oder die Sperrklinke in ihre verrastete Stellung zu bewegen. Insbesondere dieser erste Hebelarm kann vorteilhaft in einer Ausführungsform außerdem von dem Auslösehebel erfasst und aus seiner blockierenden Stellung heraus bewegt, insbesondere um eine Achse herum verschwenkt werden. Der zweite Hebelarm des Blockadehebels kann vorzugsweise gegen einen Anschlag bewegt werden, um zu vermeiden, dass der Blockadehebel über eine vorgesehene Endstellung hinaus bewegt werden kann. Das Vorsehen eines zweiten Hebelarms trägt außerdem vorteilhaft dazu bei, dass der Schwerpunkt des Blockadehebels in Richtung Achse verlagert wird, um die der BlockadeHebel herum verschwenkt werden kann. Diese Verlagerung des Schwerpunkts erleichtert ein Verschwenken des Blockadehebels.A blocking lever for blocking the pawl in its latched position preferably comprises two lever arms. A first lever arm of the blocking lever is able in particular to block the pawl in its latched position and / or to move the pawl into its latched position. In particular, this first lever arm can advantageously also be detected in one embodiment of the release lever and moved out of its blocking position, in particular to be pivoted about an axis. The second lever arm of the blocking lever can preferably be moved against a stop, in order to avoid that the blocking lever can be moved beyond an intended end position. The provision of a second lever arm also advantageously contributes to shifting the center of gravity of the blocking lever in the direction of the axis about which the blocking lever can be pivoted. This shift of the center of gravity facilitates pivoting of the blocking lever.
Der Blockadehebel kann in einer Ausführungsform zwecks Minimierung der Teile zugleich den Auslösehebel bilden. Der Auslösehebel ist in einer Ausführungsform zugleich eine Vorrast-Sperrklinke, die die Drehfalle in der Position Vorrast zu verrasten vermag. Das Gesperre vermag dann eine Tür oder Klappe zu verschließen. Es ist dann aber noch nicht planmäßig in der Position Hauptrast verrastet. Die Position Hauptrast wird ausgehend von der Position Vorrast erst erreicht, wenn die Drehfalle weiter in Richtung Schließstellung verschwenkt wird.In one embodiment, the blocking lever can at the same time form the release lever in order to minimize the parts. The release lever is in one embodiment at the same time a pre-locking pawl, which is able to lock the catch in the position Vorrast. The locking mechanism can then close a door or flap. It is then not yet scheduled locked in the position main rest. The position main rest is reached starting from the position Vorrast only when the catch is pivoted further in the closed position.
Ein erfindungsgemäßes Gesperre wird insbesondere an einer in der Regel aus Metall bestehenden Schlossplatte oder einem in der Regel aus Metall bestehenden Schlosskasten angebracht. Üblicherweise umfasst ein solches Schloss darüber hinaus ein Schlossgehäuse, welches in der Regel aus Kunststoff besteht und welches Komponenten des Schlosses nach außen abzuschirmen vermag. Darüber hinaus kann es einen insbesondere aus Kunststoff bestehenden Schlossdeckel und/ oder einen insbesondere aus Kunststoff bestehenden Deckel für eine Zentralverriegelung geben, die ebenfalls der Abschirmung dienen. Das Schloss kann zum Beispiel zu einer Tür oder einer Klappe eines Gebäudes gehören oder aber der Tür oder einer Klappe eines Kraftfahrzeugs.An inventive locking mechanism is mounted in particular on a usually made of metal lock plate or a usually made of metal lock case. Usually, such a lock also includes a lock housing, which is usually made of plastic and which is able to shield components of the castle to the outside. In addition, there may be a particular existing plastic lock cover and / or a particular existing plastic cover for a central locking, which also serve the shield. The lock may, for example, belong to a door or a flap of a building or the door or a flap of a motor vehicle.
Die Erfindung umfasst auch ein solches Schloss mit einer Sperrklinke für die Position Hauptrast der Drehfalle (auch "Hauptrast-Sperrklinke" genannt), einer Sperrklinke für die Position Vorrast der Drehfalle (auch "Vorrast-Sperrklinke" genannt) und vorteilhaft einen Blockadehebel für die genannte Hauptrast - Sperrklinke. Ein solches Schloss wird in Druckschrift
Die Drehfalle verfügt über einen gabelförmigen Einlaufschlitz, in den ein Schließbolzen einer Tür oder einer Klappe gelangt, wenn die Fahrzeugtür oder Fahrzeugklappe geschlossen wird. Der Schließbolzen verdreht dann die Drehfalle von einer Öffnungsstellung in eine Raststellung. In der Raststellung kann der Schließbolzen den Einlaufschlitz der Drehfalle nicht mehr verlassen. Die Sperrklinke verrastet die Drehfalle in der Raststellung, so dass diese nicht mehr in die Öffnungsstellung zurück bewegt werden kann.The catch has a fork-shaped inlet slot into which a locking pin of a door or flap enters when the vehicle door or vehicle door is closed. The locking pin then rotates the catch from an open position to a locked position. In the locked position, the locking bolt can no longer leave the inlet slot of the rotary latch. The pawl locks the catch in the locked position, so that it can not be moved back into the open position.
Bei einem erfindungsgemäßen Schloss gibt es Komponenten wie Sperrklinke, Blockadehebel oder Drehfalle, die verschwenkt werden können und sollen. Regelmäßig gibt es zumindest eine vorgespannte Feder, insbesondere Schenkelfeder, mit der eine gewünschte Schwenkbewegung einer solchen Komponente durch Federkraft bewirkt wird. Eine solche vorgespannte Feder vermag beispielsweise eine Sperrklinke in ihre Raststellung hinein zu bewegen, einen Blockadehebel in seine blockierende Stellung hinein oder aber eine Drehfalle in ihre geöffnete Stellung.In a lock according to the invention, there are components such as pawl, blocking lever or rotary latch, which can and should be pivoted. There is regularly at least one prestressed spring, in particular leg spring, with which a desired pivoting movement of such a component is effected by spring force. Such a prestressed spring is capable, for example, of moving a pawl into its detent position, of moving a blocking lever into its blocking position or of turning a catch into its open position.
Es zeigen
- Figur 1:
- Gesperre im verrasteten Zustand
- FIG. 1:
- Lock in locked state
In der
Die Sperrklinke 2 verrastet mit ihrer Rastfläche 8 die Drehfalle 1, die mit ihrer Rastfläche 9 auf der Rastfläche 8 der Sperrklinke aufliegt. Die Lage der Rastflächen 8, 9 zueinander ist in diesem Ausführungsbeispiel derart gewählt, dass die Drehfalle 1 ein öffnendes Moment in die Sperrklinke 2 einleitet. Durch das öffnende Moment kann die Sperrklinke 2 aus ihrer gezeigten Raststellung heraus geschwenkt werden und zwar im Fall der
Die Drehfalle 1 weist einen Fangarm 10 und einen Lastarm 11 auf. Der Fangarm 10 ist mit einer Sollknickstelle 12 versehen. Die Verjüngung kann durch eine vorzugsweise bogenförmig verlaufende Ausnehmung von einer Seite oder wie dargestellt von beiden Seiten des Fangarms bereitgestellt werden. Wird auf den von der Drehfalle 1 gehaltenen Schließbolzen 13 eine übermäßig große Kraft beispielsweise aufgrund eines Chrashfalls ausgeübt und so der Lastarm 11 in Öffnungsrichtung gezogen, dann knickt der Fangarm 10 aufgrund der Sollknickstelle 12 um die Sollknickstelle 12 herum ab und zwar relativ zum Lastarm 10 entgegengesetzt zum Uhrzeigersinn. Diese Deformation kann plastisch und/oder elastisch sein. Hierdurch verschiebt sich der Eingriffspunkt zwischen der Rastfläche 9 und Rastfläche 8 und zwar derart, dass die Überdeckung zwischen den beiden Rastflächen 8 und 9 vergrößert wird.The
Die Drehfalle 1 verfügt über einen Arm 14, der in eine Ebene hineinreicht, die sich oberhalb der Ebene befindet, in der sich die Grundflächen von Drehfalle 1 sowie Sperrklinke 3 befinden. Oberhalb der Sperrklinke 2 ist an der Achse 6 ein nicht dargestellter Auslösehebel vorgesehen, der zugleich eine Vorrast - Sperrklinke bildet. In der Position Vorrast liegt der Arm 14 an dieser Vorrast - Sperrklinke an, so dass das Gesperre ergänzend in einer Position Vorrast verrastet werden kann. Der Vorrastarm 14 ist in diesem Ausführungsbeispiel als Abkantung einstückig mit der Drehfalle 1 ausgebildet. Es ist aber ebenso vorstellbar, den Vorrastarm 14 als separaten Bolzen auszubilden und an der Drehfalle zu befestigen. Die Drehfalle 1 kann darüber hinaus über einen Arm 15 verfügen, der beispielsweise gegen einen Anschlag bewegt werden kann, um ein übermäßiges Verschwenken der Drehfalle zu verhindern.The
Der Fangarm 10 muss nicht zwingend einen verjüngten Bereich, das heißt eine Ausnehmung 12 aufweisen, um in angestrebter Weise deformiert werden zu können. Alternativ können auch ein oder mehrere Vertiefungen ein- oder beidseitig in die Drehfalle eingebracht sein. Als weitere Alternative oder ergänzend kann die Drehfalle eine Wärmebehandlung erfahren haben, so dass sich eine Sollknickstelle ausbildet. Es kommt also vor allem darauf an, dass die Drehfalle so gestaltet ist, dass im Fall einer übermäßigen Belastung durch den Schließbolzen 13 die Drehfalle so deformiert wird, dass die Überdeckung zwischen den Rastflächen 8 und 9 zumindest nicht kleiner wird. Bevorzugt wird diese Überdeckung sogar bei übermäßiger Belastung größer. In der
In einer weiteren vorteilhaften Ausführungsform ist ergänzend eine Ausnehmung 18, die beim Fangarm 10 der Drehfalle 1 auf der Seite angeordnet ist, die dem Schließbolzen 13 zugewandt ist. Es wird so ein relativ langer physikalisch wirksamer Hebel erhalten, ohne den Bauraum entsprechend vergrößern zu müssen, und zwar im Vergleich zu dem Fall, dass eine Einkerbung auf der vom Schließbolzen abgewandten Seite vorgesehen ist. Im Fall einer übermäßigen Belastung vergrößert sich dann die Überdeckung besonders stark. Eine Einkerbung liegt vor, wenn der Schließbolzen ausgehend von der geöffneten Stellung über einen stufenartigen Verlauf 19 der Kontur des Fangarms hinweg bewegt werden muss, um in die in der
- 1:1:
- Drehfallecatch
- 2:2:
- Sperrklinkepawl
- 3:3:
- Blockadehebelblocking lever
- 4:4:
- Schlosskastenlock case
- 5:5:
- DrehfallenachseRotary latch axis
- 6:6:
- gemeinsame Achse von Sperrklinke und Auslösehebelcommon axis of pawl and release lever
- 7:7:
- BlockadehebelachseBlocking lever axis
- 8:8th:
- Rastfläche der SperrklinkeDetent surface of the pawl
- 9:9:
- Rastfläche der DrehfalleDetent surface of the catch
- 10:10:
- Fangarmtentacle
- 11:11:
- Lastarmload arm
- 12:12:
- SollknickstellePredetermined breaking point
- 13:13:
- Schließbolzenlocking pin
- 14:14:
- Arm für Verrasten in der Position VorrastArm for latching in the position Vorrast
- 15:15:
- Armpoor
- 16:16:
- SchenkelfederLeg spring
- 17:17:
- Anschlag für BlockadehebelStop for blocking lever
- 18:18:
- Ausnehmungrecess
- 19:19:
- stufenartiger Konturverlaufstep-like contour course
Claims (9)
- Latch for a door or flap with a locking mechanism consisting of a catch (1) and at least one pawl (2) for ratcheting of the catch (1), wherein the catch (1) is preferably capable of initiating an opening moment into the pawl (2) in the ratchet position, wherein the catch (1) encompasses a pre-determined bending point (12) which causes the distance between the free ends of the arresting arm (10) and the load arm (11) of the catch (1), increasing in the ratcheted state of the locking mechanism in the case of excessive stress, wherein the pre-determined bending point (12) is arranged on the arresting arm (10), characterized in that the pre-determined bending point (12) encompasses at least two recesses (18) which are arranged on the side of the arresting arm (10) which is located on the side deflected from the locking bolt (13) of a door or flap in a ratcheted state of the locking mechanism, wherein the recesses (18) have an identical or different extension into the catch (1).
- Latch according to claim 1, characterized in that at least one material characteristic of the catch (1) is changed selectively and/or in places, in particular changed by heat treatment.
- Latch according to one of the previous claims, characterized in that at least a cross-sectional reduction is contained in the catch (1).
- Latch according to claim 3, characterized in that the cross-sectional reduction is inserted into the catch (1) unilateral and/or bilateral.
- Latch according to claim 3 or 4, characterized in that two or more cross-sectional reductions are inserted into the catch (1).
- Latch according to one of the claims 3 to 5, characterized in that the cross-sectional reduction has a shape of a sharp notch, of a radius and/or is U-shaped.
- Latch according to one of the previous claims, characterized by a blocking lever (3) which is capable of blocking the pawl (2) in the ratcheted state of the locking mechanism.
- Latch according to one of the previous claims, characterized in that the pawl (1) and a triggering lever are pivotably located on a common axis (6).
- Latch according to claim 7, characterized in that a triggering lever is capable of moving the blocking lever (3) out of its blocking position.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012207443A DE102012207443A1 (en) | 2012-05-04 | 2012-05-04 | Lock for a flap or door |
PCT/DE2013/000244 WO2013163981A1 (en) | 2012-05-04 | 2013-05-02 | Lock for a flap or door |
Publications (2)
Publication Number | Publication Date |
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EP2844812A1 EP2844812A1 (en) | 2015-03-11 |
EP2844812B1 true EP2844812B1 (en) | 2019-01-09 |
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Application Number | Title | Priority Date | Filing Date |
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EP13734314.1A Active EP2844812B1 (en) | 2012-05-04 | 2013-05-02 | Lock for a flap or door |
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US (1) | US9845619B2 (en) |
EP (1) | EP2844812B1 (en) |
JP (1) | JP6236680B2 (en) |
KR (1) | KR102005602B1 (en) |
CN (1) | CN104508223B (en) |
BR (1) | BR112014026969A2 (en) |
CA (1) | CA2872070A1 (en) |
DE (1) | DE102012207443A1 (en) |
IN (1) | IN2014DN09203A (en) |
MX (1) | MX2014013346A (en) |
RU (1) | RU2014145648A (en) |
WO (1) | WO2013163981A1 (en) |
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DE102022119990A1 (en) * | 2022-08-09 | 2024-02-15 | Kiekert Aktiengesellschaft | Lock for a motor vehicle |
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2012
- 2012-05-04 DE DE102012207443A patent/DE102012207443A1/en active Pending
-
2013
- 2013-05-02 CA CA2872070A patent/CA2872070A1/en not_active Abandoned
- 2013-05-02 EP EP13734314.1A patent/EP2844812B1/en active Active
- 2013-05-02 BR BR112014026969A patent/BR112014026969A2/en not_active Application Discontinuation
- 2013-05-02 RU RU2014145648A patent/RU2014145648A/en not_active Application Discontinuation
- 2013-05-02 CN CN201380035344.XA patent/CN104508223B/en active Active
- 2013-05-02 IN IN9203DEN2014 patent/IN2014DN09203A/en unknown
- 2013-05-02 MX MX2014013346A patent/MX2014013346A/en unknown
- 2013-05-02 KR KR1020147031900A patent/KR102005602B1/en active IP Right Grant
- 2013-05-02 WO PCT/DE2013/000244 patent/WO2013163981A1/en active Application Filing
- 2013-05-02 JP JP2015509306A patent/JP6236680B2/en active Active
- 2013-05-02 US US14/398,777 patent/US9845619B2/en active Active
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DE102012207443A1 (en) | 2013-11-07 |
WO2013163981A1 (en) | 2013-11-07 |
CN104508223A (en) | 2015-04-08 |
CA2872070A1 (en) | 2013-11-07 |
IN2014DN09203A (en) | 2015-07-10 |
JP6236680B2 (en) | 2017-11-29 |
EP2844812A1 (en) | 2015-03-11 |
RU2014145648A (en) | 2016-06-27 |
WO2013163981A8 (en) | 2014-01-09 |
KR102005602B1 (en) | 2019-07-30 |
US20150137529A1 (en) | 2015-05-21 |
CN104508223B (en) | 2016-12-07 |
BR112014026969A2 (en) | 2017-06-27 |
KR20150009970A (en) | 2015-01-27 |
US9845619B2 (en) | 2017-12-19 |
JP2015520814A (en) | 2015-07-23 |
MX2014013346A (en) | 2015-08-05 |
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