EP4616039A1 - Kraftfahrzeug-schloss - Google Patents
Kraftfahrzeug-schlossInfo
- Publication number
- EP4616039A1 EP4616039A1 EP23798101.4A EP23798101A EP4616039A1 EP 4616039 A1 EP4616039 A1 EP 4616039A1 EP 23798101 A EP23798101 A EP 23798101A EP 4616039 A1 EP4616039 A1 EP 4616039A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pawl
- motor vehicle
- primary
- vehicle lock
- 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.)
- Pending
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
- the invention relates to a motor vehicle lock, in particular a motor vehicle door lock, with a locking mechanism consisting of a rotary latch and a primary pawl interacting with the rotary latch and a secondary pawl securing the primary pawl in the retracted position, and with a release lever acting on the secondary pawl, wherein the secondary pawl is designed with at least two arms in relation to a rotation axis with a blocking arm securing the primary pawl and at least one actuating arm.
- So-called multi-pawl locking mechanisms with a primary pawl and a secondary pawl are typically characterized by low forces required to open them while still providing a perfect locking function.
- the engagement between the rotary latch and the primary pawl can be designed in such a way that the primary pawl in the retracted position is equipped with an opening moment in relation to the rotary latch or pushes in the opening pivot direction, as described in the state of the art according to EP 2 803 796 B1 with further evidence.
- the secondary pawl consequently ensures that the primary pawl in the retracted position does not pivot open when the rotary latch is in a stop or is blocked against pivoting in its opening direction.
- Such a multi-pawl locking mechanism with the so-called opening tendency described above requires low actuation forces because only the secondary pawl needs to be swung open or away from its position blocking the primary pawl and then the primary pawl usually swings open automatically due to its opening tendency. For this reason, for example, for an electromotive To open such a multi-pawl or double-pawl locking mechanism, a small and therefore cost-effective electric motor drive can be used. An alternative manual actuation can also be carried out easily and with very little effort.
- motor vehicle lock described in the form explained above is generally used for all tasks related to locking doors, flaps, windows, etc. in motor vehicles.
- the motor vehicle lock in question can be used for all types of locking elements in a motor vehicle. These include, for example, side doors, sliding doors, tailgates, boot lids, bonnets, glove boxes, fuel filler flaps, flaps on loading areas, etc.
- motor vehicle lock is to be interpreted broadly in accordance with the application and the motor vehicle door locks primarily referred to are merely one variant.
- a multi-pawl or two-pawl locking mechanism is also the subject of WO 2019/063755 A1, which represents the closest prior art.
- the secondary pawl is equipped with a counter-engagement element, which interacts with an engagement element on an actuating lever or release lever for the lifting engagement.
- the counter-engagement element of the secondary pawl also has a driver, which interacts with a counter-driver on the primary pawl.
- pivoting the secondary pawl in its lifting direction corresponds to the driver on the secondary pawl engaging with the counter-driver and the primary pawl being carried along by the secondary pawl in its lifting direction.
- the counter-engagement element and the driver on the secondary pawl are mostly at an obtuse angle with respect to a rotation axis of the Secondary pawls are arranged in relation to each other.
- the secondary pawl is also equipped with a locking surface on a blocking arm, which interacts with a counter locking surface of the primary pawl.
- the overall design of the known secondary locking pawl with at least three arms, with the counter-engagement element for the actuating lever or release lever and additionally the driver for driving the primary locking pawl in the lifting direction and finally the locking surface on the blocking arm for the primary locking pawl, leads on the one hand to a jagged and complex structure of the secondary locking pawl and on the other hand and significantly to the fact that individual components of the secondary locking pawl protrude in the extension of the retraction direction of a locking bolt into an inlet mouth of the rotary latch or an inlet slot of a lock case. This is not a problem as long as the locking bolt, as an example component of a lock holder that interacts with the motor vehicle lock, is held by the locking mechanism and there is no crash, for example.
- Motor vehicle lock and in particular motor vehicle door lock so to be further developed in such a way that, taking into account the existing functionality and advantages, safety aspects in particular in the event of a crash are reflected.
- the invention proposes, in a generic motor vehicle lock and in particular a motor vehicle door lock, that the actuating arm opposite the blocking arm with respect to the axis of rotation is designed both to interact with the release lever and to entrain the primary locking pawl when the secondary locking pawl is pivoted in the lifting direction.
- the invention is therefore based, first of all, on the knowledge that the secondary pawl must still be equipped with the blocking arm and the actuating arm opposite in relation to the axis of rotation.
- the design is such that the actuating arm opposite the blocking arm in relation to the axis of rotation is designed both to interact with the release lever and to entrain the primary pawl when the secondary pawl is pivoted in the lifting direction. This means that the actuating arm interacts with both the release lever and the primary pawl.
- the generic state of the art at this point relies on two actuating arms that are connected to one another at an obtuse angle in relation to the axis of rotation and are implemented in addition to the blocking arm.
- the secondary locking pawl has only the blocking arm and the actuating arm, which are also and advantageously predominantly diametrically opposed with respect to the approximately central axis of rotation, a particularly slim construction of the primary locking pawl is observed according to the application.
- the primary locking pawl has an elongated shape because The blocking arm and the actuating arm are advantageously located diametrically opposite each other with respect to the approximately central axis of rotation.
- the blocking arm of the secondary pawl which interacts with the primary pawl, still reaches close to the inlet mouth of the locking mechanism and thus also the inlet slot of the lock case.
- the actuating arm which is diametrically opposite the blocking arm in relation to the central axis of rotation, is oriented at a clear distance from the inlet mouth or inlet slot in question.
- the invention is designed in such a way that the locking bolt, which moves in the inlet direction of the locking bolt, i.e. essentially in the longitudinal extension of the inlet slot, encounters a "free space" overall even in the event of a possible "breakthrough". This is because no arms of the secondary pawl are placed or present in any way in the extension of the inlet slot, so that the locking bolt cannot interact with either the secondary pawl or the primary pawl in the event of the breakthrough described.
- the actuating arm has a trigger contour that interacts with the release lever and also a driving contour that interacts with the primary pawl.
- the two contours are advantageously provided on opposing surfaces of the actuating arm.
- the blocking arm Opposite the actuating arm is the blocking arm, which has or defines the aforementioned blocking surface or contact surface for the primary pawl.
- the design is such that the trigger contour is arranged on a surface of the secondary pawl facing the trigger lever and the driving contour is arranged on a surface that is common to the primary pawl.
- the invention is based on the knowledge that the primary pawl, the secondary pawl and the rotary latch together define a common locking plane.
- the trigger lever is arranged parallel to this locking plane in its own plane at a distance from it.
- the invention essentially achieves this by having the trigger lever and the secondary pawl mounted coaxially around a common bearing pin. In any case, this allows both contours to be realized and implemented on the opposing surfaces of the actuating arm.
- the driving contour on the actuating arm for the primary pawl is usually designed as an arc contour for a nose of the primary pawl that slides or moves along it.
- the release contour can be a pin for a stop on the release lever that moves against it during the opening process.
- both contours on the secondary locking pawl ie the driving contour as well as the release contour, are designed as components of a plastic casing.
- the invention is based on the knowledge that the secondary locking pawl is equipped with the plastic casing in question anyway for reasons of better acoustics, which at least partially envelops a metallic core.
- the plastic casing which is usually produced by overmolding with plastic, can now be used in addition to improving the acoustics so that the two contours on the secondary locking pawl are defined in the plastic casing during the injection molding process in question.
- the nose on the primary pawl it is also possible for the nose on the primary pawl to be designed as part of a plastic coating there.
- the primary pawl also has such a plastic coating, which at least partially encloses a metal core.
- the injection molding process for the plastic coating is used to define the nose on the primary pawl.
- a multi-pawl locking mechanism and in particular a two-pawl locking mechanism is provided and implemented, which ensures reliable operation and, at the same time, safe operation, especially in the event of a crash.
- the primary pawl can generally be equipped with an opening moment and the secondary pawl ensures that the primary pawl is held in a locking position on the rotary latch. In this case, a single locking position is generally sufficient.
- the primary pawl swings open automatically due to the opening torque.
- a particularly small drive can be used to actuate the release lever.
- a winding or cable drive is used here to actuate the release lever.
- Such a winding or cable drive is generally known from the long-expired utility model DE 20 2007 000 733 U1. This means that the winding drive or cable drive in question can be placed at a distance from the locking mechanism and the release lever inside the motor vehicle lock and, in conjunction with the special design of the secondary locking pawl, ensures that the previously mentioned "free space" is available in the extension of the inlet slot. This is where the main advantages can be seen.
- Fig. 1 the motor vehicle lock according to the invention in an overview
- Fig. 2 and 3 show individual detailed views of the motor vehicle lock according to Fig. 1.
- the figures show a motor vehicle lock, which is not limited to a motor vehicle door lock.
- This is equipped with a locking mechanism 1, 2, 3 consisting of a rotary latch 1, a primary pawl 2 and a secondary pawl 3.
- the primary pawl 2 interacts with the rotary latch 1, namely can fall into a notch 1a of the rotary latch 1, which according to the embodiment is the only notch of the rotary latch and thus also of the locking mechanism 1, 2, 3. Since the primary pawl 2 is equipped with an opening moment, the secondary pawl 3 ensures that the primary pawl 2 is held in locking engagement with the rotary latch 1 and is blocked.
- the rotary latch 1 as well as the two pawls 2, 3 are mounted on axes parallel to one another in a lock case 4. The axes are spaced apart from one another and form a triangle as shown in Fig. 1.
- a release lever 5 is provided, with the aid of which the secondary pawl 3 can be pivoted in the clockwise direction indicated in the illustration according to Fig. 1.
- the pivoting movement of the secondary pawl 3 results in the secondary pawl 3 releasing the primary pawl 2, which in turn pivots out of the catch 1a of the rotary latch 1 in the clockwise direction also indicated in Fig. 1 due to the described opening tendency when released by the secondary pawl 3 and releases the rotary latch 1.
- the rotary latch 1 can also pivot open about its axis (spring-assisted) in the clockwise direction indicated in Fig. 1.
- the secondary pawl 3 is designed with at least two arms in relation to a rotation axis 6.
- the rotation axis 6 for the secondary pawl 3 is defined by a bearing bolt which is anchored in the lock case 4. Similar bearing bolts also serve to define the rotation axis of the rotary latch 1 and the primary pawl 2.
- the secondary pawl 3 is designed with two arms in relation to the axis of rotation 6 defined by the bearing pin 6, namely it has a blocking arm 3a securing the primary pawl 2 and at least one actuating arm 3b.
- the design is such that the blocking arm 3a is opposite the actuating arm 3b in relation to the axis of rotation 6, namely diametrically opposite.
- the actuating arm 3b of the secondary pawl 3 is designed both to interact with the release lever 5 and to entrain the primary pawl 2 when the secondary pawl 3 is pivoted in the lifting direction, as will be explained in more detail below.
- the blocking arm 3a of the secondary pawl 3 is equipped with a metallic locking surface 7, which interacts with a corresponding metallic locking surface 8 on the primary pawl 2.
- the two locking surfaces 7, 8 lie against one another in the closed state of the locking mechanism 1, 2, 3 shown in Fig. 1.
- the actuating arm 3b of the secondary locking pawl 3 is now equipped with an interaction contour 9 that interacts with the release lever 5, specifically with a stop 10 on the release lever 5 made of plastic.
- the release contour 9 on the actuating arm 3b is designed as a pin 9 for the stop 10 on the release lever 5 that moves against it during an opening process.
- an opening process of the secondary locking pawl 3 corresponds to the stop 10 in the illustration according to Fig. 2 making a downward movement indicated by an arrow, so that the pin 9 of the secondary locking pawl 3 is acted upon and the secondary locking pawl 3 pivots clockwise around its axis of rotation 6.
- the actuating arm 3b of the secondary pawl 3 is additionally equipped with a driving contour 11 for the primary pawl 2.
- the driving contour 11 is designed as an arc contour 11, specifically for a nose 12 of the primary pawl 2 that moves along it.
- the nose 12 of the primary pawl 2 moves along the arc contour 11 and is As a result, the primary pawl 2 is pivoted clockwise about its axis and carried along by the secondary pawl 3 in the process described.
- the secondary pawl 3 is only equipped with the blocking arm 3a and the actuating arm 3b. Both arms 3a, 3b are predominantly diametrically opposite one another in relation to the approximately central axis of rotation 6.
- the design is such that the two contours 9, 11 on the actuating arm 3b of the secondary pawl 3 are provided on opposite surfaces of the actuating arm 3b.
- the release contour or the pin 9 is found on a surface of the secondary pawl 3 facing the release lever 5.
- the driving contour 11 or the curved contour 11 is arranged on a surface common to the primary pawl 9 and can thus interact with the nose 12 on the primary pawl 2.
- both contours 9, 11 are provided at the end of the actuating arm 3b of the secondary pawl 3.
- both contours 9, 11 have a maximum distance to an inlet slot 13 in the lock case 4 indicated in Fig. 2 for a locking bolt 14 that is only indicated at this point.
- the locking bolt 14 moves into the inlet slot 13 in question in the direction of entry E indicated in Fig. 2 and can thus pivot the initially opened rotary latch 1 into its closed position indicated in Fig. 1.
- the primary pawl 2 engages and is secured using the secondary pawl 3.
- a “free area” 15 is formed in extension of the Entry direction E is defined inside the motor vehicle lock, namely beyond or in extension of the entry slot 13.
- the locking bolt 14 can move and enter this free area 15 without there being or being able to be an interaction with the primary locking pawl 2 or the secondary locking pawl 3. In this way, an unintentional opening of the locking mechanism is expressly and in accordance with the invention avoided, particularly in the event of a crash.
- the two contours 9, 11 are each formed as components of an associated plastic casing 16 on the one hand on the primary pawl 2 and on the other hand on the secondary pawl 3 and are defined according to the invention.
- This means that the two contours 9, 11 are automatically defined and produced when the associated metallic core is molded over the one hand on the primary pawl 2 and on the other hand on the secondary pawl 3.
- Fig. 3 in particular makes it clear that the inventive design of the secondary pawl 3 enables a particularly large distance A between the rotary latch 1 and the primary pawl 2.
- this distance A can be up to 1 mm or even more, so that when the rotary latch 1 moves into a so-called over-travel area beyond the catch 1 a, as indicated in Fig. 3, any interaction with the primary pawl 2 is not observed and cannot occur. As a result, any malfunctions are expressly avoided according to the invention when this overstroke position is assumed.
- the cable 18 can be wound up and unwound on a drum.
- the release lever 5 can be actuated and in particular its opening movement in a clockwise direction, indicated by an arrow in Fig. 1, can be initiated.
- the release lever 5 is mounted coaxially to the secondary pawl 3, taking into account the common bearing pin and definition of the same axis of rotation 6.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022129475.7A DE102022129475A1 (de) | 2022-11-08 | 2022-11-08 | Kraftfahrzeug-Schloss |
| PCT/DE2023/100776 WO2024099501A1 (de) | 2022-11-08 | 2023-10-17 | Kraftfahrzeug-schloss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4616039A1 true EP4616039A1 (de) | 2025-09-17 |
Family
ID=88598753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23798101.4A Pending EP4616039A1 (de) | 2022-11-08 | 2023-10-17 | Kraftfahrzeug-schloss |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4616039A1 (de) |
| CN (1) | CN120265853A (de) |
| DE (1) | DE102022129475A1 (de) |
| WO (1) | WO2024099501A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024103829A1 (de) * | 2024-02-12 | 2025-08-14 | Brose Schließsysteme GmbH & Co. Kommanditgesellschaft | Kraftfahrzeugschloss für ein Kraftfahrzeug |
| DE102024103830A1 (de) * | 2024-02-12 | 2025-08-14 | Brose Schließsysteme GmbH & Co. Kommanditgesellschaft | Kraftfahrzeugschloss für ein Kraftfahrzeug |
Family Cites Families (7)
| 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 |
| DE202007000733U1 (de) | 2007-01-12 | 2008-05-21 | BROSE SCHLIEßSYSTEME GMBH & CO. KG | Kraftfahrzeugschloß |
| US8235428B2 (en) * | 2009-07-14 | 2012-08-07 | Kiekert Ag | Lock unit having a slotted pawl |
| DE202013004589U1 (de) | 2013-05-17 | 2014-08-18 | BROSE SCHLIEßSYSTEME GMBH & CO. KG | Kraftfahrzeugschloss |
| DE102017122803A1 (de) | 2017-09-29 | 2019-04-04 | Brose Schließsysteme GmbH & Co. Kommanditgesellschaft | Kraftfahrzeugschloss |
| DE102018125948A1 (de) * | 2018-10-18 | 2020-04-23 | Brose Schließsysteme GmbH & Co. Kommanditgesellschaft | Kraftfahrzeugschloss |
| US11492826B2 (en) * | 2019-05-09 | 2022-11-08 | Brose Schliesssysteme Gmbh & Co. Kommanditgesellschaft, Wuppertal | Motor vehicle lock |
-
2022
- 2022-11-08 DE DE102022129475.7A patent/DE102022129475A1/de active Pending
-
2023
- 2023-10-17 WO PCT/DE2023/100776 patent/WO2024099501A1/de not_active Ceased
- 2023-10-17 CN CN202380084390.2A patent/CN120265853A/zh active Pending
- 2023-10-17 EP EP23798101.4A patent/EP4616039A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024099501A1 (de) | 2024-05-16 |
| CN120265853A (zh) | 2025-07-04 |
| DE102022129475A1 (de) | 2024-05-08 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250603 |
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| AK | Designated contracting states |
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| 19U | Interruption of proceedings before grant |
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| 19W | Proceedings resumed before grant after interruption of proceedings |
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