EP4652344A1 - Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeug - Google Patents
Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeugInfo
- Publication number
- EP4652344A1 EP4652344A1 EP23813555.2A EP23813555A EP4652344A1 EP 4652344 A1 EP4652344 A1 EP 4652344A1 EP 23813555 A EP23813555 A EP 23813555A EP 4652344 A1 EP4652344 A1 EP 4652344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- closing
- lock
- rotary latch
- pawl
- 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
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/36—Noise prevention; Anti-rattling means
-
- 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
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
- E05B83/18—Locks for luggage compartments, car boot lids or car bonnets for car boot lids or rear luggage compartments
-
- 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
- Tailgate lock in particular 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, a closing drive, wherein the locking mechanism can be transferred from a pre-locking position to a main locking position by means of the closing drive, and wherein the transfer takes place by means of a variable torque.
- the invention relates to a motor vehicle locking device, such as can be used in doors or tailgates, for example. It is already common today for these locking devices to be equipped with electrical drives that enable the door or tailgate to be opened and/or closed electrically.
- a motor vehicle lock with an electric drive is known from DE 10 2009 020 488 A1.
- Such a motor vehicle lock usually has a rotary latch that includes at least one main catch. In the closed position, the rotary latch engages in a locking bracket or a lock holder that can be attached to a vehicle body, for example.
- the rotary latch engages with a pawl that secures the rotary latch in the main catch against rotation by means of a positive fit.
- the motor vehicle lock also includes an electric motor drive unit. Functional elements of the drive unit act on the pawl of the motor vehicle lock via a pawl mechanism. This allows the pawl to be moved with the drive element around a rotation axis of the pawl, which allows the rotary latch to be unlocked, for example.
- the publication “Securing the position of the functional elements” discloses friction contacts that secure the holding position of the functional elements when a drive element is switched off.
- end positions can be safely maintained using friction systems, for example, and on the other hand, end stops are also used to slow down the functional elements or to reach a defined holding position.
- end stops are also used to slow down the functional elements or to reach a defined holding position.
- an end position i.e. a stop position, can be adopted.
- a closing and opening device for a motor vehicle door lock is known from DE 10 2013 106 672 A1.
- the closing and opening device is equipped with a drive and a transmission element.
- a locking mechanism is also implemented.
- the drive works with the transmission element interposed on the locking mechanism in order to open or close it.
- the locking mechanism can be transferred from a pre-locking position to a main locking position using the closing drive, with the transfer taking place using a variable torque.
- locking mechanisms are used that have a pre-locking position and a main locking position.
- the locking system has a locking mechanism consisting of a rotary latch and at least one pawl.
- 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 moves into the pre-locking position, in which the rotary latch is held by the pawl. The locking mechanism can then be moved into the main locking position.
- the pawl When 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. Depending on the load acting on the locking mechanism, the pawl can be released from the rotary latch and the opening noise can be more or less loud.
- the opening noise is also referred to as an opening bang.
- One of the aims of the automobile manufacturers and the developers of the locking systems is always to make the opening noise as quiet as possible, which in turn generates a quality feature for the operator. This is where the invention comes in.
- 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 the opening noise is as low as possible or can be completely eliminated.
- the object of the invention is to provide a structurally simple and cost-effective solution for quietly opening a motor vehicle lock.
- 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, a closing drive, wherein the locking mechanism can be transferred from a pre-locking position to a main locking position by means of the closing drive, and wherein the transfer takes place by means of a variable torque, and wherein the closing drive, after reaching the main locking position, can be moved to a position before the main locking position. can be transferred to a higher holding position.
- the closing pawl can be used to open the locking mechanism quietly or silently.
- the closing pawl is able to interact directly with the rotary latch from the holding position and thus influence the opening process.
- the holding position is in the immediate vicinity of but at a distance from an engagement point on the rotary latch.
- the engagement point can, for example, be a recess in the rotary latch or be designed as a raised area on the rotary latch.
- a separate bolt is attached to the rotary latch into which the closing pawl can engage.
- the rotary latch is able to influence the opening process by the closing pawl exerting a holding force on the rotary latch, which can ensure that the locking mechanism opens easily and therefore quietly.
- a lock for a motor vehicle refers to locks or locking systems that are used in motor vehicles. These can be locking systems for hoods, side doors, sliding doors, tailgates, covers or other locking systems in motor vehicles that are used wherever pivoting or sliding components must be securely positioned and held 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, for example, a closing or an opening moment is present in a main locking position, so that in the event of an opening moment, the pawl can be additionally secured with an auxiliary pawl or a blocking lever in the main locking position.
- the locking mechanism according to the invention has a pre-locking position and a main locking position. When a side door, for example, is closed for the first time, the Locking mechanism in conjunction with a lock holder in a pre-locking position. From this pre-locking position, the locking mechanism or the rotary latch can be moved to the main locking position using the closing drive. The closing drive acts directly on the rotary latch and moves the rotary latch from the pre-locking position to the main locking position. In the main locking position, the pawl rests on a main locking position of the rotary latch.
- the holding position is arranged in a rotation angle range of a cam disk of less than 50 degrees, preferably less than 30 degrees and even more preferably less than 10 degrees, starting from the main locking position on the cam disk.
- the holding position is the position in which a drive for a closing pawl is arranged directly or at a short distance from the engagement element or the engagement point on the rotary latch when the locking mechanism is in the main locking position.
- the closing pawl is driven by means of a cam disk, whereby the cam disk itself can drive the closing pawl or a drive lever is arranged between the cam disk and the closing pawl.
- the drive lever or the closing pawl itself can be guided in the cam disk, whereby the holding position results in such a way that the holding position is offset by approx. 50 degrees from the main locking position on the cam disk.
- the engagement point between the holding lever and cam disc or control cam and drive lever can be approximately 50 degrees away from the main locking position in the control cam.
- smaller angles of 30 degrees or 10 degrees can also be set.
- the closing drive has a cam disk, with a control contour arranged on the cam disk.
- the closing drive has at least one cam disk that can be driven by an electric motor.
- a gear can also be arranged between the electric motor and the cam disk so that sufficient force or torque can be made available.
- the cam disc itself has a control contour into which the closing pawl engages directly or a drive lever engages.
- the drive lever can, for example, be pivotally mounted in the motor vehicle lock so that the drive lever can generate an additional transmission in relation to the closing pawl. In any case, 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 the pre-locking position to the main locking position.
- the cam disc and the control contour are preferably made of 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 transmission of a variable torque to the closing pawl.
- control cam has at least one start position, one pre-locking position, one holding position, one main locking position and one over-stroke position.
- the control cam can thus guide the closing pawl or the drive lever over the entire closing process, starting from the start position, through the pre-locking position, the holding position, the main locking position and the over-stroke position.
- the guidance takes place entirely via the control contour, so that continuous guidance of the closing pawl can be guaranteed.
- the closing pawl or the drive lever can advantageously be guided in a continuous movement in the control cam from the start position through the pre-locking position, the holding position, the main locking position and the over-stroke position.
- a pivotably mounted drive lever can be guided in the control contour, this results in an advantageous embodiment of the invention.
- the drive lever is stored separately in the vehicle lock and can pivot in the vehicle lock.
- the drive lever engages the control contour of the cam disc via a guide pin, 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 rotating sleeve on the drive lever. By using a sleeve, friction losses between the drive lever and the control contour can be compensated.
- the closing pawl is in the holding position after the closing pawl has moved the rotary latch into the main locking position. This closing process takes place when the locking mechanism is closed and the closing pawl moves the rotary latch from the pre-locking position into the main locking position.
- the rotary latch is advantageously moved beyond the main locking position into the over-stroke position so that the locking pawl can fall into the main locking position.
- the closing pawl then moves back so that the closing pawl is spaced from the engagement in the rotary latch.
- the closing pawl is still in a position in which the closing pawl can engage in the engagement element of the rotary latch.
- the engagement element can also represent the pre-lock on the rotary latch, for example.
- the operator can now initiate the opening process of the locking mechanism. This is done by, for example, operating a radio remote control or a control button or an external operating lever and activating the electric drive for the cam disc.
- the electric drive is also the closing drive at the same time.
- the closing pawl is brought back into engagement with the rotary latch and the rotary latch is moved beyond the main locking position.
- the rotary latch is actually released from the The locking pawl is released so that the load acting on the rotary latch is absorbed by the closing lever.
- the locking pawl can be released or moved out of the engagement area of the main catch without an opening bang or opening noise being produced.
- the locking mechanism can therefore be opened quietly.
- the locking pawl can be brought out of engagement with the rotary latch and a backward movement, i.e. moving the closing pawl against the closing movement, causes the rotary latch to move in the direction of the opening movement.
- the rotary latch is therefore moved electromechanically in the opening direction.
- the closing pawl is only brought out of engagement with the rotary latch after the main catch of the rotary latch has moved past the locking pawl.
- the locking latch and rotary latch are disengaged at a time when there is no longer any increased load acting on the rotary latch.
- a rotary latch force is generated when the sealing pressure of the door or flap acts on the rotary latch or between the rotary latch and the lock holder.
- the rotary latch is relieved by the electromechanical guidance of the rotary latch over the main catch, so that when the locking latch is released from the rotary latch, only small or hardly any forces act on the rotary latch. In any case, however, the forces are so small that there is no longer an opening bang or a loud tearing noise between the locking latch and the rotary latch; instead, the rotary latch is already relieved, allowing easy and quiet sliding between the locking latch and the rotary latch.
- the closing lever or the closing pawl can be released from engagement with the rotary latch by means of the locking pawl.
- the locking pawl can have an extension that reaches into the area of the closing pawl.
- a lifting contour works together with the closing pawl in such a way that when the rotary latch and the closing pawl are moved, the closing pawl engages with the lifting contour and the closing pawl is moved out of the area of the engagement element on the rotary latch.
- the closing pawl is actually released from engagement with the locking pawl. handle with the rotary latch.
- the pawl thus has a dual function. On the one hand, the pawl serves to implement the preliminary and main locking and on the other hand, the pawl, particularly due to the design of the extension, serves to release the locking mechanism and eject the closing pawl.
- the drive lever is guided by means of the control contour via the overstroke position into the start position, then again an advantageous further development of the invention can be achieved.
- the drive lever can be moved from the holding position towards the overstroke position when unlocking the locking mechanism, i.e. when opening the locking mechanism quietly, and can be moved directly back to the start position in the control curve, then the locking mechanism can be unlocked and the closing pawl ejected by a single, parallel movement of the cam disk.
- the cam disk is moved by a single rotary movement and a parallel rotary movement of the cam disk when moving the closing pawl from the holding position via the main locking position to the overstroke position and finally to the start position, then a uniform and quiet opening of the locking mechanism can be achieved.
- the drive lever has different positions in the control curve.
- the drive lever In the holding position of the closing pawl, the drive lever is in a first position in the control cam and is moved by the control cam through a rectified movement of the cam disc in such a way that the main locking position, the overtravel position, is passed and the drive pawl is immediately moved back to the start position.
- the advantage of the invention is that by means of a uniform movement of the drive lever and at the same time a rectified movement of the cam disc, the rotary latch can be relieved, the rotary latch can be moved back past the main locking position into a relieved position of the rotary latch and the closing pawl can be released from engagement with the rotary latch.
- the cam disc is not only used to close the locking mechanism as described above, but can also be used to open the locking mechanism electrically. If immediate and rapid opening is required, the cam disc can have an additional control contour that allows conventional opening, i.e. opening by means of an opening bang. For this purpose, the cam disc has an alternative control curve that allows the locking pawl to be mechanically released from the engagement area with the rotary latch. This can be done advantageously by moving the cam disc in an opposite direction so that the locking mechanism can be opened.
- an electrical opening and closing can be carried out from the start position of the control contour on the cam disk.
- the control cam thus has two different directions of movement. Depending on the rotation of the cam disk, a closing and subsequent quiet opening can take place by moving the cam disk in one direction. However, if the cam disk is moved back to the start position by a backward movement of the cam disk after reaching the main locking position, so that the drive lever is in the start position in the control cam, an electrical unlocking of the locking mechanism can take place by an opposite movement.
- Figure 1 is a schematic representation of a motor vehicle lock with a locking mechanism and a closing opening drive, showing the open position of the locking mechanism, i.e. for example an open tailgate,
- Figure 2 shows a representation of the locking mechanism and the opening or closing drive after reaching the main locking position when closing the locking mechanism
- Figure 3 the position of the closing latch in a holding position in the main locking position of the locking mechanism
- Figure 4 the overstroke position of the locking mechanism or the position of the locking mechanism in which the pawl can be opened or separated from the rotary latch easily and quietly
- Figure 5 a further movement of the closing or opening drive and the release of the pawl from the engagement area with the rotary latch
- Figure 6 shows the guided opening of the rotary latch via the closing or opening drive.
- Figure 1 shows a motor vehicle lock 1, in particular a tailgate lock, in principle and in detail the locking mechanism 2 and the closing opening drive 3.
- the closing opening drive 3 is specified by means of an electric motor 4, whereby the detailed drive of the closing opening drive 3, in the form of, for example, a worm gear with a subsequent gear stage, is not shown.
- the motor vehicle lock 1 is shown in an open position, so that a lock holder 5, which is located in an inlet mouth 6 of a rotary latch 7, is released or is shown at the start of the closing process.
- a pawl 8 rests on an outer contour of the rotary latch 7 in a spring-loaded manner.
- the closing opening drive 3 consists of a closing pawl 12, a drive lever 13 and a cam disk 14.
- the drive lever 13 is located with its engagement sleeve 15 in a starting position S in the control contour 16 of the cam disk 14.
- the pawl 8 engages with the pre-latch 17 of the rotary latch 7.
- the pre-latch 17 is attached as a raised portion on the rotary latch 7, with the pre-latch 17 simultaneously serving as an engagement means for the closing pawl 12.
- the pre-latch 17 can also be present as a recess in the rotary latch.
- the closing pawl 12 engages in the engagement means 17 and moves the rotary latch 7.
- the main latch position is shown in Figure 2.
- the engagement sleeve 15 of the drive lever 13 is then located within the control contour 16 in the main locking position HR.
- the locking mechanism 2 is now in the main locking position.
- the vehicle lock 1 is closed and the door or flap is in the locking position.
- the closing pawl is now moved back, but is still in a position in which the closing pawl 12 can engage with the pre-lock or the engagement means 17.
- the engagement sleeve 15 is now located within the control cam 16 in the holding position HP.
- the holding position HP is spaced from the main locking position in the cam disk 14 by an angle a of, for example, less than 50 degrees, in particular less than 30 degrees.
- the drive lever 13 can be pivoted around the bearing point 19 while it is moving in the motor vehicle 1.
- the electric motor 4 drives the cam disk 14 further in the direction of the arrow P2, so that the cam disk 14 continues to rotate anti-clockwise.
- This moves the rotary latch 7 into an overstroke position ÜP, so that the pawl 8 is released from the main catch 18.
- the pawl 8 is thus relieved, with the load on the rotary latch being taken up by the closing pawl 12 and the closing opening drive 3.
- the lock is therefore closed further as shown in Figure 4, namely against the door or tailgate seal.
- the load on the rotary latch 7 is taken up by the closing opening drive 3.
- the opening process of the locking mechanism is already completed, that no opening bang can occur between the pawl 8 and the rotary latch 7.
- the rotary latch 7 is then moved in the opening direction by means of the cam disc 14 and guided by the control contour 16. Only when the closing pawl 12 has reached a lifting contour 21 on the extension 20 of the pawl 8, the closing pawl 12 is released from engagement with the pre-latch 17 or the engagement means
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023101262.2A DE102023101262A1 (de) | 2023-01-19 | 2023-01-19 | Schloss, insbesondere Heckklappenschloss, für ein Kraftfahrzeug |
| PCT/DE2023/100877 WO2024153279A1 (de) | 2023-01-19 | 2023-11-15 | Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4652344A1 true EP4652344A1 (de) | 2025-11-26 |
Family
ID=88975888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23813555.2A Pending EP4652344A1 (de) | 2023-01-19 | 2023-11-15 | Schloss, insbesondere heckklappenschloss, für ein kraftfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4652344A1 (de) |
| DE (1) | DE102023101262A1 (de) |
| WO (1) | WO2024153279A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024210018A1 (de) * | 2024-10-16 | 2026-04-16 | Witte Automotive Gmbh | Verriegelungsvorrichtung und Fahrzeugelement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007008700B4 (de) * | 2007-02-20 | 2016-07-21 | BÖCO Böddecker & Co. GmbH & Co. KG | Verriegelungsvorrichtung für eine Fahrzeugtür |
| DE102009020488A1 (de) | 2008-08-22 | 2010-02-25 | Kiekert Ag | Antriebseinheit mit blockiertem Funktionselement für eine Zentralverriegelung |
| DE102013106672A1 (de) | 2013-03-01 | 2014-09-04 | Kiekert Aktiengesellschaft | Kraftfahrzeugtürverschluss |
| DE102013006521A1 (de) | 2013-04-16 | 2014-10-16 | Kiekert Aktiengesellschaft | Kraftfahrzeugtürverschluss |
| DE102013008415A1 (de) * | 2013-05-17 | 2014-11-20 | BROSE SCHLIEßSYSTEME GMBH & CO. KG | Kraftfahrzeugschloss |
| DE102017101703A1 (de) * | 2017-01-30 | 2018-08-02 | Kiekert Ag | Schloss mit Zuzieheinrichtung für ein Kraftfahrzeug |
-
2023
- 2023-01-19 DE DE102023101262.2A patent/DE102023101262A1/de active Pending
- 2023-11-15 EP EP23813555.2A patent/EP4652344A1/de active Pending
- 2023-11-15 WO PCT/DE2023/100877 patent/WO2024153279A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024153279A1 (de) | 2024-07-25 |
| DE102023101262A1 (de) | 2024-07-25 |
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