EP4652343A1 - Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeug - Google Patents
Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeugInfo
- Publication number
- EP4652343A1 EP4652343A1 EP23814092.5A EP23814092A EP4652343A1 EP 4652343 A1 EP4652343 A1 EP 4652343A1 EP 23814092 A EP23814092 A EP 23814092A EP 4652343 A1 EP4652343 A1 EP 4652343A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pawl
- lock
- closing
- rotary latch
- 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
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
- E05B81/15—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt with means preventing the detent to return to its latching position before the bolt has moved to the unlatched position
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/20—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
- E05B81/66—Monitoring or sensing, e.g. by using switches or sensors the bolt position, i.e. the latching status
Definitions
- Lock in particular a tailgate lock, for a motor vehicle
- the invention relates to a lock, in particular a tailgate lock, for a motor vehicle, comprising a locking mechanism with a rotary latch and at least one pawl, wherein the rotary latch can be locked in a pre-locking position and a main locking position by means of the pawl, a closing and opening drive, wherein the locking mechanism can be transferred from a pre-locking position to a main locking position by means of the closing and opening drive, and wherein the transfer takes place by means of a variable torque.
- More and more electrically assisted operating and/or functional elements are being installed in today's motor vehicles.
- the invention relates to a motor vehicle locking device, as can be used, for example, in doors or flaps. It is already common today for these locking devices to be equipped with electric drives that enable the door or flap to be opened and/or closed electrically.
- the words "lock”, “motor vehicle lock”, “locking device” are used as synonyms below and refer to a locking device with which a component that is movably arranged on the motor vehicle can be securely held in a position during operation.
- P22057WO 2 November 15, 2023 A motor vehicle lock with an electric drive has become known from DE 10 2009 020 488 A1.
- Such a motor vehicle lock regularly has a rotary latch that comprises at least one main catch. In the closed position, the rotary latch engages in a locking bracket or in a lock holder that is attached, for example, to a vehicle body.
- the rotary latch engages with a pawl, which secures the rotary latch in the main catch against rotation by preferably positive locking.
- the motor vehicle lock also comprises an electromotive drive unit. Functional elements of the drive unit act on the rotary pawl of the motor vehicle lock via a pawl mechanism. This allows the pawl to be moved with the drive element about a rotation axis of the pawl, which allows the rotary latch to be unlocked, for example.
- the locking system has an inherent locking mechanism consisting of a rotary latch and at least one pawl.
- a tailgate For example, and in particular when closing a tailgate electrically, the tailgate moves into the area of a lock holder, with the locking system and the lock holder working together.
- the locking system usually first goes into the pre-lock position, in which the rotary latch is held by the pawl.
- the locking mechanism can then be moved to the main locking position using the closing drive.
- the locking mechanism is opened, the pawl is also released from the rotary latch using the electric drive, so that the rotary latch is released and the tailgate can be opened or opened electrically.
- the object of the invention is to provide an improved motor vehicle lock.
- the object of the invention is to provide a motor vehicle lock in which a secure electrical opening of a locking system can be achieved with the simplest design means. The object is achieved by the features of the independent patent claim 1. Advantageous embodiments are specified in the subclaims.
- a release position is characterized by the fact that the pawl is pivoted so far out of the engagement area with the rotary latch that the pawl cannot fall back into the rotary latch contour of the main or pre-latch.
- the lock according to the invention therefore offers the advantage that the closing and opening drive has a multiple function.
- the closing and opening drive can be used to electrically unlock, i.e. open the locking mechanism.
- a safety function can be implemented using the closing and opening drive.
- the safety function includes holding the pawl in the release position.
- lock can be locking systems for hoods, side doors, sliding doors, tailgates, covers or other locking systems in motor vehicles that are used wherever pivotable or slidable components must be securely positioned and held by means of a locking mechanism during operation of the motor vehicle.
- the terms "lock”, “locking system” or “motor vehicle lock” are used as synonyms.
- the lock has a locking mechanism with a rotary latch and at least one pawl. Pawls can be used here, which interact with the rotary latch in different ways. It is conceivable that in a main locking position, for example, a closing or an opening moment is present, so that in the event of an opening moment, the pawl can also be held secured in the main locking position with an auxiliary pawl or a locking lever or a blocking lever.
- the locking mechanism according to the invention has a pre-locking position and a main locking position.
- a side locking position for example, is closed for the first time, the locking mechanism is locked in place.
- P22057WO 6 November 15, 2023 When closing the door, the locking mechanism moves into a pre-locking position in conjunction with a lock holder. From this pre-locking position, the locking mechanism or the rotary latch can be transferred to the main locking position by means of the closing drive.
- the closing drive acts directly on the rotary latch and moves the rotary latch from a pre-locking position to the main locking position. In the main locking position, the pawl rests on a main latch of the rotary latch.
- the closing and opening drive has a mechanism or structure that can introduce a variable torque into the rotary latch.
- the variable torque offers an advantage, especially when closing, in that when closing the side door, for example, the forces from the transition from the pre-lock to the main latch increase significantly.
- the increasing forces required during closing are due to the fact that the door must be moved against the resistance of the door seal.
- the locking mechanism is moved beyond the main locking position into an over-stroke position. This over-stroke position is characterized by the fact that the pawl can engage safely because the rotary latch has been pivoted beyond the main locking position.
- the closing and opening drive has a cam disk and that a control contour is arranged on the cam disk.
- the closing drive has at least one cam disk that can be driven by an electric motor. P22057WO 7 November 15, 2023 is.
- a gear can also be arranged between the electric motor and the cam disc so that sufficient force or torque can be made available.
- the cam disc itself has a control contour into which a closing pawl can engage directly or a drive lever can engage.
- the drive lever can, for example, be pivotally mounted in the motor vehicle lock so that an additional transmission ratio can be generated with the drive lever in relation to the closing pawl.
- the drive lever or the closing pawl is guided in the control contour of the cam disc so that the rotary latch can be transferred from a pre-locking position to a main locking position.
- the cam disc and the control contour are preferably made of a plastic.
- the drive lever and the closing pawl are preferably made of a metallic material, in particular sheet steel.
- the control contour can be used to initiate a targeted transfer of a variable torque to the closing latch.
- the cam disc works together with a drive lever, whereby closing can be carried out using the drive lever.
- the drive lever is mounted separately in the motor vehicle lock and can pivot in the motor vehicle lock.
- the drive lever is preferably mounted on a lock case of the motor vehicle lock.
- the drive lever engages the control contour of the cam disc via a guide bolt, for example, and on the opposite side of the bearing, the drive lever is connected to the closing latch.
- the drive lever can interact with the control contour, for example, via a stepped mandrel or via a rotatable sleeve on the drive lever. By using a sleeve, friction losses between the drive lever and the control contour can be compensated.
- the rotary latch is in the open position when the rotary latch is able to accommodate the lock holder.
- the rotary latch is open so far that an inlet area of the rotary latch, the so-called inlet mouth, is aligned in such a way that a lock holder attached to the motor vehicle or to a flap can engage in the inlet area of the rotary latch.
- the closing and opening drive moves the pawl during electrical opening so far that the pawl releases the rotary latch.
- a spring acting on the rotary latch in the opening direction is sufficient to move the rotary latch into the opening position.
- a sealing pressure from the flap or door acts on the rotary latch, which also exerts a force on the rotary latch and forces or moves the rotary latch into the opening position.
- a switching means in particular a microswitch or a Hall sensor, can detect the position of the rotary latch, and in particular the open position of the rotary latch.
- Microswitches are advantageously used to query the position of the rotary latch, as this can provide a reliable means of position detection.
- a control cam is arranged on the cam disk, wherein the cam disk including the control cam is preferably made of a plastic and in one piece. It can be advantageous if the drive lever can be guided in the control cam.
- the cam disc is therefore used to move the drive lever, whereby the drive lever interacts directly with the closing latch, or the closing latch is pivotably mounted on the drive lever.
- the closing mechanism therefore consists of an electric motor, an optionally connected gear, the cam disc with the control cam, the drive lever and the closing latch. This design makes it possible to create a compact design of the closing mechanism within the lock and to be able to provide an adjustable and defined closing moment by selecting the gear, the design of the control cam on the cam disc, the transmission ratio of the pivotably mounted drive lever and the arrangement of the closing latch in relation to the rotary latch.
- P22057WO 10 November 15, 2023 In addition to closing, the cam disk is responsible for the task or function of electrically opening the locking mechanism.
- Electrical opening of a locking mechanism occurs when the pawl is moved out of the locking engagement with the rotary latch. This can refer to the pre-locking as well as the main locking position of the locking mechanism. If the pawl has an extension and the extension can be brought into engagement with the cam disk, this results in a further design variant of the invention.
- the cam disk works directly together with the extension on the pawl. In this case, the drive lever does not move or is guided in the cam disk in such a way that no movement is initiated in the drive lever.
- the control curve on the cam disk has a contour that corresponds to a radius or a length of the drive lever from the bearing point to the point of engagement in the control curve.
- the extension on the pawl is designed in such a way that the extension engages with the cam disc and can move the pawl into the release position in the event of a movement opposite to the closing movement.
- the cam disc thus moves in different directions in relation to a bearing point or pivot point of the cam disc.
- the cam disc has a raised area that interacts with an engagement surface on the pawl, in particular the extension.
- the extension has the task of providing sufficient torque to open the locking mechanism even in extreme situations. In particular in the case of extreme temperatures, contamination and/or, for example, if the motor vehicle is deformed as a result of an accident, sufficient force or torque must be made available by means of the electric drive and a corresponding transmission ratio to open the locking mechanism.
- the extension has the task of a lever with which a suitable transmission ratio can be provided to unlock the locking mechanism. It can also be advantageous if the extension is made of plastic, at least in part.
- Plastics have the property that they are easy to shape or can be produced in almost any shape and are also lightweight. This means that the mechanism for electrical opening can be made with a minimum weight in terms of weight.
- the locking pawl itself is made of steel, in particular a stamped sheet steel, at least in part, since a high load must be held by means of the locking mechanism, i.e. by means of the rotary latch and locking pawl, especially in the case where an accident occurs. P22057WO 12 November 15, 2023 case, the motor vehicle lock or locking mechanism must be able to keep the flap or door closed.
- the design of the motor vehicle lock according to the invention now creates the possibility of being able to provide a high level of functionality with minimal design means.
- the functions of closing, electrically opening and holding the pawl in the release position can be implemented by means of a cam disk.
- the invention is explained in more detail below with reference to the attached drawings using a preferred exemplary embodiment. However, the principle applies that the exemplary embodiment does not limit the invention, but merely represents an advantageous embodiment of the invention.
- the features shown can be implemented individually or in combination with other features of the description as well as the patent claims.
- Figure 1 a schematic representation of a motor vehicle lock with a locking mechanism in a main position and a closing and opening drive
- Figure 2 the locking mechanism in an unlocked state, whereby the locking mechanism was unlocked by means of the closing and opening drive
- Figure 3 shows the opened locking mechanism and a holding position as a function of a storage lever for the pawl
- Figure 4 shows the starting position of the closing and opening drive and the position of the locking mechanism before the motor vehicle lock is closed.
- Figure 1 shows the tailgate lock 1, as well as a locking mechanism 2 and a closing and opening drive 3.
- the locking mechanism 2 comprises a rotary latch 4 and a pawl 5, wherein the locking mechanism 2 interacts with a lock holder 6 and is shown in a main locking position.
- the rotary latch 4 In the main locking position, the rotary latch 4 is held in a main locking position 7 by means of the pawl 5, wherein the pawl 5 rests against the main locking position 7 of the pawl 4.
- the tailgate lock 1 is shown in a closed position, i.e., for example, in a closed tailgate position.
- the closing and opening drive 3 comprises an electric drive in the form of an electric motor 8, a cam disk 9, a drive lever 10 and, as shown, a closing pawl 11.
- a gear (not shown), for example a worm gear and/or spur gear, can be arranged between the electric motor 8 and the cam disk 9.
- a control cam 12 is formed on the cam disk 9 and interacts with the drive lever 10 via, for example, an engagement sleeve 13.
- Figure 1 shows the starting position, i.e., the main locking position, in which the motor vehicle lock 1 is located when, for example, a tailgate is closed, i.e., the locking mechanism 2 with the lock holder 6 is in the main locking position and the vehicle is ready for operation.
- the pawl 5 rests on an outer surface contour 14 of the rotary latch 4, so that further insertion of the pawl 5 into the main catch 7 can be limited.
- the pawl 5 has an extension 15 which interacts with the cam disk 5.
- the pawl 5 is formed from different components.
- the pawl 5 has a first metallic core 16, wherein the extension 15 is made of a plastic.
- the extension 15 rests with an engagement surface 17 on an elevation 18 on the cam disk 9.
- the pawl 5 is thus guided in two ways, on the one hand by the system on the rotary latch and on the other hand by the interaction of the elevation 18 on the cam disk 9 in interaction with the elevation 18.
- the pawl 5 is accommodated in the motor vehicle lock 1 so as to be pivotable about the axis 19 and the rotary latch 4 about the axis 20.
- FIG. 2 shows the state of the locking mechanism 2 in which the motor vehicle lock 1 is when an electrical opening has been initiated by the operator.
- the electric drive 8 has moved the cam disk 9 clockwise in the direction of the arrow P, resulting in an interaction between the engagement surface 17 and the elevation 18.
- the pawl 5 was moved out of the engagement area of the main catch 7 by means of the extension 15 so that the pawl 5 is released from the main catch 7 on the rotary latch 4.
- the rotary latch 4 is now able to pivot around the axis 20 in the direction of the arrow P1.
- the rotary latch 4 is pivoted by the forces acting on the rotary latch 4 from a rotary latch spring (not shown) and the door seal pressure acting on the lock 1.
- Figure 3 shows the closing and opening drive 3 in a position corresponding to Figure 2. That is, the position of the pawl 5 in an unlocked position, and the closing and opening drive 3 in a position after electrical opening.
- the lock holder 6 is now released by the locking mechanism 2 so that the tailgate 1 can be opened.
- the advantage of this solution is that the electrical unlocking of the locking mechanism 2 can be achieved with a movement of the cam disk 9 and at the same time a snow load function is achieved via the interaction of the engagement surface 17 with the elevation 18.
- Snow load function here means that the pawl 5 is kept out of engagement with the rotary latch 4 during the complete opening movement of the rotary latch 4 in the direction of the arrow P1.
- the locking pawl 5 is prevented from falling into a catch of the rotary latch 4, i.e.
- the tailgate lock 1 is at a distance from the lock holder 6.
- the rotary latch has a plastic casing 26 which forms a buffer pocket 27 in the inlet area 25 to minimize noise.
- the cam disk 4 was electrically moved back clockwise in the direction of the arrow P3 so that the cam disk returns to its starting position as shown in Figure 1.
- the closing pawl 11 is also spring-loaded and rests against the surface contour 14 of the rotary latch, which on the one hand enables the locking pawl 5 to fall into the preliminary catch 23 as well as the main catch 7 and at the same time the closing pawl 11 is able to access the preliminary catch 23, for example, and enable the locking mechanism 2 to be closed.
- the rotary latch 4 is moved from the pre-locking position to the main locking position, whereby the cam disk 9 is moved in the direction of the arrow P3 to close.
- the advantage is that, by means of a cam disk and the interaction between the locking pawl 5 and the closing and opening drive 3, on the one hand the electrical opening and on the other hand a snow load function can be realized.
- This implementation is made possible with minimal construction resources and is therefore cost-effective.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023101459.5A DE102023101459A1 (de) | 2023-01-20 | 2023-01-20 | Schloss, insbesondere Heckklappenschloss, für ein Kraftfahrzeug |
| PCT/DE2023/100879 WO2024153280A1 (de) | 2023-01-20 | 2023-11-15 | Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4652343A1 true EP4652343A1 (de) | 2025-11-26 |
Family
ID=88978215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23814092.5A Pending EP4652343A1 (de) | 2023-01-20 | 2023-11-15 | Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4652343A1 (de) |
| DE (1) | DE102023101459A1 (de) |
| WO (1) | WO2024153280A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004011798B3 (de) * | 2004-03-11 | 2005-10-13 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Schloss, insbesondere für Fahrzeugtüren, -klappen oder dergleichen |
| DE102004013671B4 (de) * | 2004-03-19 | 2006-07-06 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Schloss, insbesondere für Fahrzeugtüren oder -klappen |
| DE102007008700B4 (de) * | 2007-02-20 | 2016-07-21 | BÖCO Böddecker & Co. GmbH & Co. KG | Verriegelungsvorrichtung für eine Fahrzeugtür |
| CN101668916B (zh) * | 2007-02-28 | 2017-07-28 | 马格纳·克劳祖雷斯有限公司 | 模块式锁具 |
| DE102009020488A1 (de) | 2008-08-22 | 2010-02-25 | Kiekert Ag | Antriebseinheit mit blockiertem Funktionselement für eine Zentralverriegelung |
| DE102012216976B4 (de) * | 2012-09-21 | 2023-11-09 | Kiekert Aktiengesellschaft | Schloss für eine Klappe oder Tür |
| DE102013106672A1 (de) | 2013-03-01 | 2014-09-04 | Kiekert Aktiengesellschaft | Kraftfahrzeugtürverschluss |
| DE102015110751A1 (de) * | 2015-07-03 | 2017-01-05 | Kiekert Ag | Kraftfahrzeugschloss |
| KR101836696B1 (ko) * | 2016-09-12 | 2018-03-09 | 현대자동차주식회사 | 차량용 테일게이트의 래치장치 |
| DE102017101704A1 (de) * | 2017-01-30 | 2018-08-02 | Kiekert Ag | Schloss mit Zuzieheinrichtung für ein Kraftfahrzeug |
| DE102018123293A1 (de) * | 2018-09-21 | 2020-03-26 | Kiekert Aktiengesellschaft | Kraftfahrzeugschloss |
-
2023
- 2023-01-20 DE DE102023101459.5A patent/DE102023101459A1/de active Pending
- 2023-11-15 EP EP23814092.5A patent/EP4652343A1/de active Pending
- 2023-11-15 WO PCT/DE2023/100879 patent/WO2024153280A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024153280A1 (de) | 2024-07-25 |
| DE102023101459A1 (de) | 2024-07-25 |
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