EP3870785A1 - Kraftfahrzeugschloss, insbesondere kraftfahrzeugtürschloss - Google Patents
Kraftfahrzeugschloss, insbesondere kraftfahrzeugtürschlossInfo
- Publication number
- EP3870785A1 EP3870785A1 EP19797551.9A EP19797551A EP3870785A1 EP 3870785 A1 EP3870785 A1 EP 3870785A1 EP 19797551 A EP19797551 A EP 19797551A EP 3870785 A1 EP3870785 A1 EP 3870785A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pawl
- motor vehicle
- comfort
- locking mechanism
- contour
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
- E05B85/20—Bolts or detents
- E05B85/24—Bolts rotating about an axis
- E05B85/26—Cooperation between bolts and detents
Definitions
- Motor vehicle lock in particular motor vehicle door lock
- the invention relates to a motor vehicle lock, in particular a motor vehicle door lock, with a locking mechanism with a rotary latch, comfort pawl and pawl, the locking pawl latching the comfort pawl which has fallen into the rotary latch at least in the closed position of the locking mechanism.
- a motor vehicle lock in particular a motor vehicle door lock
- a locking mechanism with a rotary latch, comfort pawl and pawl
- the locking pawl latching the comfort pawl which has fallen into the rotary latch at least in the closed position of the locking mechanism.
- Such ratchet with rotary latch, comfort pawl and pawl are also known as double ratchet ratchet.
- the motor vehicle locks described in the introduction can generally be any type of locks on or in the motor vehicle. These include, for example, seat back locks, flap locks, etc. It is particularly preferred for motor vehicle door locks which not only include motor vehicle side door locks, but which also include motor vehicle front hood and motor vehicle rear flap locks as well as motor vehicle tank flap locks or the like and are expressly to be covered.
- the double-pawl ratchet with rotary latch, comfort pawl and ratchet pawl realized in this context are characterized by low noise and a quick response time. For this reason, motor vehicle locks with such a double ratchet lock are increasingly being used and implemented in practice, as documented, for example, by the prior art of the generic type according to EP 2 291 568 B1.
- a first pawl in the form of a comfort pawl and a further second pawl in the form of the pawl are realized, with the aid of which the pivoting of the first pawl or comfort pawl is blocked.
- a locking device with a motor-driven actuator for at least one release lever is additionally implemented.
- the release lever is moved so that it interacts with both pawls one after the other as it moves.
- the procedure is usually that the pawl is lifted by motor or manually from the comfort pawl that has fallen into the catch to open the locking mechanism or double-pawl locking mechanism.
- the comfort pawl can be swiveled away regularly and therefore the rotary latch is released.
- the catch swings open with spring support and releases a locking pin that was previously caught. An associated motor vehicle door can thereby be opened.
- the invention is based on the technical problem of developing such a motor vehicle lock and in particular motor vehicle door lock so that even with increased self-locking forces of the comfort latch, for example as a result of many years of use and / or due to unfavorable environmental conditions, it is nevertheless possible to open the locking mechanism properly. This should be implemented with little effort and using a structurally simple solution.
- the invention proposes in a generic motor vehicle lock and in particular motor vehicle door lock that the pawl additionally acts on the comfort pawl in the direction of opening during at least one opening operation of the locking mechanism.
- the pawl therefore performs at least two functions.
- the pawl ensures, as usual and in general, that the locking position of the locking mechanism locks into the catch sunken comfort latch is secured or locked.
- the comfort pawl cannot swing away from the rotary latch and holds it in the closed position of the locking mechanism.
- a second functionality of the pawl is now added. Because when the locking mechanism is opened, the pawl actively ensures that the comfort pawl is also acted on in the direction of opening. While in the prior art the pawl for opening the locking mechanism pivots away from the comfort pawl, gives up its securing position and the comfort pawl is subsequently pivoted away from the catch, according to the invention there is an active actuation of the pawl on the part of the pawl during the opening process. Because the pawl acts on the comfort pawl at least during the opening process of the locking mechanism in the direction of opening. This functionality is additionally and according to the invention provided for the retained and known functionality of the pawl, namely to hold the comfort pawl in the closed position of the ratchet in its position that has fallen into the catch and to lock or secure it.
- the comfort pawl advantageously has a latching contour and an opening contour.
- the pawl interacts with the locking contour in the closed position of the locking mechanism and with the opening contour to open the locking mechanism.
- the design is further and advantageously made in such a way that the latching contour and the opening contour of the comfort pawl are designed differently from one another in terms of location and function. This ensures that the pawl can securely secure the comfort pawl in the locking position of the locking mechanism. This is because the pawl interacts with the locking contour.
- the pawl is to act actively on the comfort pawl during the opening process of the locking mechanism in the direction of opening, this interaction takes place with the opening contour, which is designed to be spatially and functionally separate from the latching contour. In this way, the functionalities can be separated perfectly, especially since they do not overlap or only slightly overlap.
- the detent contour is arranged radially outwards in comparison to an axis of rotation of the comfort pawl and the opening contour is arranged radially inwards in comparison to said axis of rotation for this purpose.
- the two contours are arranged on a common lever arm of the two-armed comfort latch.
- the comfort pawl generally has two lever arms.
- a lever arm may be designed as a contour arm because it has the two contours, that is to say both the latching contour and the opening contour.
- the other lever arm is a stop arm, which limits pivoting movements of the comfort pawl.
- the latching contour is designed in detail and advantageously as a contact surface for a mating surface of the pawl resting against it in the closed position of the locking mechanism.
- the counter surface is usually located on the front of an actuating pin as part of the pawl. That is, in The locking position of the locking mechanism leads to the interaction of the counter surface on the front side of the pawl on the one hand with the contact surface on the comfort pawl on the other. To open the locking mechanism and consequently the comfort latch, any self-locking forces must be overcome, especially between the contact surface and the counter surface.
- the opening contour is advantageously fork-shaped with an actuating arm and a stop arm spaced radially therefrom with the definition of an intermediate space.
- the opening contour has a fork shape that adjusts itself through the two arms, the actuating arm and the stop arm. Since the actuating arm and the stop arm are radially spaced from one another, the space between the two arms is observed and defined.
- the locking pawl When the locking mechanism is opened, the locking pawl now acts on the actuating arm with a large transmission ratio to open the comfort pawl.
- the large translation arises in that the pawl acts on the actuating arm as part of the fork-shaped opening contour at its radially outer end.
- the pawl works with a high torque on the comfort pawl to open it.
- any large self-locking forces of the comfort latch can be overcome in the opening process described.
- the pawl is immersed in the open state of the locking mechanism in the space between the actuating arm and the stop arm.
- the pawl only acts on the actuating arm in this open state with a small ratio, namely at its radially inner end.
- the pawl acts on the actuating arm as part of the opening contour, however, in contrast to the opening process, not at its radially outer end but at its radially inner end. This results in a small gear ratio, because in this case the pawl works on the comfort pawl on a short arm.
- the pawl When the locking mechanism is open, the pawl can be loaded with a smaller gear ratio than the opening process because in the open state any self-locking forces of the comfort pawl have been overcome by static friction and the comfort pawl has become sliding friction during the opening process. As a result, high operating forces on the comfort pawl are no longer required.
- the invention takes this into account in that the pawl acts in the open state on the actuating arm with a small ratio, namely at its radially inner end.
- This design also ensures that the pawl is held in position by the pawl when the locking mechanism is open. This generally works without an additional spring, which is unnecessary compared to the prior art. As a result, the design effort is reduced and, of course, there are also lower costs for realizing such a motor vehicle lock. The main advantages can be seen here.
- FIG. 1 shows an overview of the motor vehicle lock or motor vehicle door lock with the locking mechanism located in the closed position
- FIG. 3B shows the motor vehicle lock according to FIG. 3A in the open position
- a motor vehicle lock which is designed as a non-restrictive motor vehicle door lock.
- the motor vehicle lock or motor vehicle door lock is limited to the elements and components essential for the invention.
- the motor vehicle lock has a locking mechanism with a rotary latch 1, a comfort pawl 2 and a locking pawl 3, which is designed as a double-latch locking mechanism.
- respective axes of rotation 4, 5, 6 are provided, by means of which the rotary latch 1, the comfort pawl 2 and the pawl 3 are each mounted in a lock case 7, which is only indicated in FIG.
- the basic structure still include two stops or stop damper 8, 9, namely a stop 8 for the rotatable about the axis of rotation 5 pawl 2 and another stop 9 for the pawl 3, which can be pivoted about its associated axis of rotation 6 .
- the rotary latch 1 in turn ensures that a locking bolt 10 has been caught in the closed position of the double-pawl ratchet of FIG. 1.
- the basic structure also includes a release lever or generally an actuating element 11, with the aid of which the pawl 6 can be acted upon in the opening direction, that is to say executes a clockwise movement, only indicated in FIG. 1, about its axis of rotation 6.
- the pawl 6 moves away from its stop 9, against which it rests in the closed position of the locking mechanism according to FIG. 1.
- the actuating element 11 or the release lever can generally be acted upon manually and / or by motor, but this is not shown in detail.
- 3A shows an opening process of the double-pawl locking mechanism starting from the closed position in FIG. 1. It can be seen that for this purpose the pawl 3 has been actuated with the aid of the actuating element 11 and has carried out the previously described clockwise movement about its axis of rotation 6 and has moved away from the associated stop 9.
- the comfort pawl 2 is initially designed with a total of two arms.
- a stop arm 2a in the closed position of the comfort pawl 2 at the stop 8 and on the other hand a contour arm 2b realized.
- the stop 8 may be composed of two elements, but this is irrelevant for the following considerations.
- the stop arm 2a and the contour arm 2b of the comfort pawl 2 form an obtuse angle according to the exemplary embodiment, the axis of rotation 5 of the comfort pawl 2 being arranged in the region or in the vicinity of the apex of this obtuse angle.
- the contour arm 2b has two contours 12; 13a, 13b, 13c.
- the two contours 12; 13a, 13b, 13c are designed on the one hand as a locking contour 12 and on the other hand as an opening contour 13a, 13b, 13c.
- the latching contour 12 and the opening contour 13a, 13b, 13c of the comfort pawl 2 are designed differently from one another in terms of location and function.
- the locking contour 12 is located radially outwards in comparison to the axis of rotation 5 of the comfort pawl 2
- the opening contour 13a, 13b, 13c is arranged radially inwards in comparison with the relevant axis of rotation 5, as can be seen in a comparative examination of FIGS. 3A and 3B .
- the latching contour 12 is designed as a contact surface 12 for a mating surface 14 of the pawl 3 resting thereon in the closed position of the locking mechanism, cf. Fig. 1.
- the two surfaces that is to say the contact surface 12 on the comfort pawl 2 and the counter surface 14 on the locking pawl 3
- the two surfaces 12, 14 in the closed position accordingly 1 abut against each other and ensure that the pawl 3 latches the comfort pawl 2, namely in its state in which it has fallen into the catch 1.
- the counter surface 14 on the pawl 3 is located on the front side of an actuating pin 3a of the pawl 3.
- the actuating pin 3a of the pawl 3 in question can dip into an intermediate space 13c, which is formed on the contour arm 2b of the comfort pawl 2 in that the opening contour 13a, 13b, 13c is generally fork-shaped.
- the opening contour 13a, 13b, 13c actually has an actuating arm 13a and a stop arm 13b radially spaced therefrom. Due to the radial spacing of the two arms 13a, 13b, between both arms 13a, 13b the space 13c already mentioned. This is shown in particular in FIG. 3B, which shows the open state.
- the pawl 3 ensures that the comfort pawl 2 that has fallen into the catch 1 is locked in the locking position of the locking mechanism.
- This is implemented in detail so that the counter surface 14 on the front side of the pawl 3 interacts with the latching contour or contact surface 12 of the comfort pawl 2.
- the contour arm 2b of the comfort pawl 2 and thus the comfort pawl 2 as a whole interacts with a fly rest 15 of the rotary latch 1, as shown in FIG. 2D in addition to FIG. 1.
- the pawl 3 bears against its stop 9. Since the rotary latch 1 travels with spring support against the comfort pawl 2 or its contour arm 2b, the rotary latch 1 cannot be opened and the locking bolt 10 is caught (see FIGS. 1 and 2D).
- the pawl 3 takes on an additional function according to the invention, in addition to the safety function of the comfort pawl 2, as previously shown in FIG. 1. This additional function is clear from FIG. 3A and is described below. Because when the locking mechanism is opened, the pawl 3 additionally ensures that the comfort pawl 2 is acted upon in the direction of opening during this opening process. 3A makes this clear.
- the opening process shown here initially corresponds to the fact that the pawl 3, starting from the closed position of the locking mechanism in FIG. 1, is actuated clockwise in FIG. 1 to rotate about its axis of rotation 6 and the associated one Stop 9 leaves.
- the pawl 3 or its pin 3a moves against the actuating arm 13a as part of the opening contour 13a, 13b, 13c on the comfort pawl 2.
- this process works in such a way that the pawl 3 acts on the actuating arm 13a with a large transmission ratio to open the comfort pawl 2, namely at its radially outer end.
- This is done by corresponding arrows drawn in FIG. 3A by double arrows Lever arms clearly.
- the decisive factor at this point is a lever arm Hi, which is set between a contact surface of the pawl 3 and the radially outer end of the actuating arm 13a at a distance from the axis of rotation 5 of the comfort pawl 2.
- Said lever arm Hi ensures that the comfort pawl 2 is acted upon with great torque during the opening process to overcome any self-locking forces or static friction on the part of the pawl 3 and can also be acted upon.
- the pawl 3 operates in the opening process according to FIG. 3A on the long or large lever arm Hi of the comfort pawl 2, which is established in that the pawl 3 acts on the comfort pawl 2 at the radially outer end of the actuating arm 13a.
- relatively large self-locking forces or static friction of the comfort pawl 2 can also be overcome in this opening process.
- the pawl 3 acts on the comfort pawl 2 in the opening direction when the locking mechanism is opened. Since the pawl 3 is acted upon in the clockwise direction shown in FIG. 1 about its axis of rotation 6, this clockwise rotation of the pawl 3 during the opening process in FIG. 3A causes the comfort pawl 2 to pivot about its axis of rotation 5 in the counterclockwise direction. Since in this process the pawl 3 acts on the actuating arm 13a with a large transmission ratio to open the comfort pawl 2, the comfort pawl 2 can be swung open immediately from its engagement with the rotary latch 1, and in principle also without additional spring force.
- the contour arm 2b of the comfort pawl 2 also leaves the main catch 15 of the rotary latch 1.
- the rotary latch 1 is pivoted about its axis of rotation 4 in the counterclockwise direction indicated in FIG. 3A and releases the locking bolt 10, as can be seen and understood during the transition to the open state shown in FIG. 3B.
- the pawl 3 In the opening process of the locking mechanism described, the pawl 3 not only acts on the actuating arm 13a of the comfort pawl 2 or the opening contour 13a, 13b, 1 3c at its radially outer end.
- FIG. 3B shows the opened state of the motor vehicle lock following the opening process shown in FIG. 3A.
- the pawl 3 acts only on the actuating arm 13a of the comfort pawl 2 in this open state and shown in FIG. 3B with a small ratio, namely at its radially inner end.
- the comfort pawl 2 has already overcome any flat friction and has shifted into sliding friction, so that only lower forces are required to keep the comfort pawl 2 in this open state . This is ensured by the pawl 3, which acts on the comfort pawl 2 in the open state, taking into account the shorter slack arm H2.
- FIGS. 2A to 2D show the reverse process starting from the open state according to FIG. 3B up to the closed state according to FIG. 1. That is, the open state corresponding to FIG. 3B corresponds to the representation in FIG. 2A, whereas the closed state of the locking mechanism according to FIG. 1 corresponds to the representation in FIG. 2D.
- the comfort pawl 2 initially interacts with a pre-catch 16 on the rotary latch 1.
- the locking bolt 10 moving into the locking mechanism ensures that the catch 1 is pivoted in the clockwise direction shown in FIG. 2A.
- the comfort pawl 2 comes into engagement with the preliminary catch 16 of the rotary latch 1.
- the rotary latch 1 has moved away from the comfort pawl 2 as a whole with its downward catch 15.
- closing drive which acts on locking mechanism 1, 2, 3 and is not expressly shown.
- the closing operation ensures that the rotary latch 1, starting from the pre-latching position of FIG. 2B, is further acted upon by a clockwise motor and thereby reaches the overstroke position according to FIG. 2C.
- the locking mechanism changes from the overstroke position according to the illustration in FIG. 2C to the anti-lock position according to FIG. 2D.
- the rotary latch 1 rests with its flat rest 15 on the comfort pawl 2 or the contour arm 2b of the comfort pawl 2, as has already been described above.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018126288.4A DE102018126288A1 (de) | 2018-10-23 | 2018-10-23 | Kraftfahrzeugschloss, insbesondere Kraftfahrzeugtürschloss |
| PCT/DE2019/100910 WO2020083438A1 (de) | 2018-10-23 | 2019-10-18 | Kraftfahrzeugschloss, insbesondere kraftfahrzeugtürschloss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3870785A1 true EP3870785A1 (de) | 2021-09-01 |
| EP3870785B1 EP3870785B1 (de) | 2022-07-06 |
Family
ID=68426052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19797551.9A Active EP3870785B1 (de) | 2018-10-23 | 2019-10-18 | Kraftfahrzeugschloss, insbesondere kraftfahrzeugtürschloss |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3870785B1 (de) |
| DE (1) | DE102018126288A1 (de) |
| WO (1) | WO2020083438A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11492826B2 (en) * | 2019-05-09 | 2022-11-08 | Brose Schliesssysteme Gmbh & Co. Kommanditgesellschaft, Wuppertal | Motor vehicle lock |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607546B1 (fr) * | 1986-12-02 | 1989-03-10 | Rockwell Cim | Serrure, notamment pour porte de vehicule automobile |
| FR2828517B1 (fr) * | 2001-08-13 | 2003-10-03 | Valeo Securite Habitacle | Serrure de vehicule automobile a deux cliquets |
| DE102008028256A1 (de) | 2008-06-13 | 2009-12-24 | Kiekert Ag | Schließvorrichtung mit zwei Sperrklinken und motorisch angetriebenen Stellantrieb |
| DE102009021297A1 (de) * | 2009-05-14 | 2010-11-25 | Inteva Products Europe Gmbh | Kraftfahrzeugschloss |
| US8235428B2 (en) * | 2009-07-14 | 2012-08-07 | Kiekert Ag | Lock unit having a slotted pawl |
| GB2480860B (en) * | 2010-06-04 | 2014-05-21 | Body Systems Usa Llc | Latch assembly |
| US9212509B2 (en) * | 2013-03-27 | 2015-12-15 | Kiekert Ag | Locking mechanism |
| US9534425B2 (en) * | 2013-12-05 | 2017-01-03 | Kiekert Ag | Lock for a motor vehicle |
-
2018
- 2018-10-23 DE DE102018126288.4A patent/DE102018126288A1/de active Pending
-
2019
- 2019-10-18 EP EP19797551.9A patent/EP3870785B1/de active Active
- 2019-10-18 WO PCT/DE2019/100910 patent/WO2020083438A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP3870785B1 (de) | 2022-07-06 |
| DE102018126288A1 (de) | 2020-04-23 |
| WO2020083438A1 (de) | 2020-04-30 |
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