EP4665926A1 - Schloss für ein kraftfahrzeug, insbesondere hauben- oder klappenschloss - Google Patents
Schloss für ein kraftfahrzeug, insbesondere hauben- oder klappenschlossInfo
- Publication number
- EP4665926A1 EP4665926A1 EP24703263.4A EP24703263A EP4665926A1 EP 4665926 A1 EP4665926 A1 EP 4665926A1 EP 24703263 A EP24703263 A EP 24703263A EP 4665926 A1 EP4665926 A1 EP 4665926A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lock
- rotary latch
- leg spring
- locking
- motor vehicle
- 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
- 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
- E05B83/24—Locks for luggage compartments, car boot lids or car bonnets for car bonnets
-
- 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
- E05B85/02—Lock casings
-
- 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
- E05B85/243—Bolts rotating about an axis with a bifurcated bolt
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/04—Spring arrangements in locks
- E05B2015/0431—Modifying spring characteristic or tension
- E05B2015/0434—Automatically
Definitions
- the invention relates to a lock for a motor vehicle, in particular a hood lock, having a locking mechanism with a rotary latch and at least one pawl for locking a lock holder at least in a closed position of the motor vehicle lock, a leg spring, wherein the leg spring interacts with the locking mechanism in such a way that the lock holder can be moved out of the closed position by means of the leg spring, at least in a supporting manner.
- Locks or locking systems for motor vehicles are used where doors, flaps or movable components on motor vehicles have to be held in place in order to ensure that the motor vehicle can be driven safely.
- a lock holder is attached to the hood or the flap, which then interacts with the motor vehicle lock.
- the lock holder usually interacts with a locking mechanism of the associated motor vehicle door lock.
- Lock holder and motor vehicle door lock generally define the motor vehicle door lock.
- the lock holder in conjunction with the locking mechanism in the motor vehicle lock, ensures a safe and reliable closure. In principle, the opposite can also be done. Due to the primary locking function of the lock holder in conjunction with the locking mechanism in the motor vehicle door lock, it is on the one hand a particularly safety-relevant component, which on the other hand is exposed to particular stresses, especially in the event of an accident. In fact, the protection of vehicle occupants in the event of a side impact depends largely on how reliably the lock holder and the locking mechanism interacting with it are able to absorb the attacking forces. The primary concern here is that the vehicle door remains closed so that safety devices provided in or on the vehicle door, such as brake assist, side airbag, side impact protection, etc., can have the desired effect.
- safety devices provided in or on the vehicle door such as brake assist, side airbag, side impact protection, etc.
- the locking mechanism in the vehicle lock has a pre-locking or holding or catch position and a main locking position.
- a two-stroke operation is provided. With a first stroke, which is applied to the power P23029WO 3 January 15, 2024 vehicle lock, the lock holder is moved from the main locking position (closed flap) to a pre-locking or catch position. This secures the flap against the flap opening completely if the Bowden cable is accidentally operated, thus endangering the driver or passengers. The flap or hood is only fully released after a second pull on the Bowden cable.
- DE 296 00 386 U1 describes a front flap lock of the type described above. The front flap lock works together with a striker.
- the front flap lock is usually located at the front end of a motor vehicle and works together with a striker on a front flap.
- the striker is pivotally mounted on the front flap and can be pivoted from a normal position to an evasive position against the restoring force of a striker spring. This is done with the help of an operating handle that can be operated by the user when the locking bar is in a pre-locking position.
- the locking bar is then pivoted out of its path of movement and can pivot around the hook end.
- the lock is closed, the locking bar and in particular a web forming the end of the locking bar slides along the control flank of the catch hook, which in the state of the art is firmly connected to the lock housing.
- the catch hook runs over the end of the control flank and is then moved back by the tensioned catch hook spring so that it assumes a rear grip position in relation to the locking flank.
- the locking bar When the locking bar is moved further, the latter enters the locking jaw of a rotary latch, which is in the P23029WO 4 January 15, 2024 As the locking bracket is further moved, it is twisted and secured in a locked position by a pawl.
- a front flap lock has become known with a catch hook assigned to a lock housing for catching a locking bar, wherein the catch hook has a control flank and a locking flank which lies in the movement path of the locking bar which can be deviated from its movement path in such a way that the latter initially slides along the control slope of the catch hook which is fixed in the catching position opposite the lock housing when the front flap is closed and after overrunning the catch hook end it moves into a pre-locking position behind the locking flank, and with a locking jaw of a rotary latch into which the locking bar dips in an open position of the rotary latch after a further displacement of the front flap in the closing direction and is held in a locking position of the rotary latch secured by a pawl, wherein the catch hook is firmly connected to the rotary latch and the rotary latch is pushed into its open position by a spring-loaded ejection arm.
- a lock for a motor vehicle in particular a hood lock
- a lock for a motor vehicle comprising a locking mechanism with a rotary latch and at least one pawl for locking a lock holder at least in a closed position of the motor vehicle lock, a leg spring, wherein the leg spring interacts with the locking mechanism in such a way that the lock holder can be moved out of the closed position at least in a supporting manner by means of the leg spring, wherein a different force can be introduced into the rotary latch by means of the leg spring.
- the design of the lock according to the invention now makes it possible to set up and close the rotary latch using different forces. When closing, it must be ensured that the lock holder reaches the main locking position safely.
- Direct engagement of the leg spring on the rotary latch enables a direct interaction between the rotary latch and the lock holder to occur.
- the force can be transmitted from the leg spring to the rotary latch without a transmission element, so that the force that can be changed via the leg spring can be introduced directly into the rotary latch and is available to the rotary latch.
- the pre-tensioning lever works directly with the leg spring and is able to adjust the spring travel. In other words, the force provided by the leg spring can be varied using the pre-tensioning lever.
- the leg spring has two legs, with a first leg acting directly on the rotary latch and a second leg engaging with the pre-tensioning lever.
- the leg spring is thus able to support itself on the pre-tensioning lever and to introduce a force directly into the rotary latch.
- the pre-tensioning lever is pivotally mounted in a lock case of the motor vehicle lock.
- the ability to move or pivot the pre-tensioning lever allows the position of the second leg on the pre-tensioning lever to be changed. This makes it possible to vary the force acting on the rotary latch.
- the spring travel can be adjusted and thus the force in the leg spring can be influenced. With different spring travels, i.e. with a different spread of the spring, a different force can be made available in the motor vehicle lock.
- the force is adjustable.
- one leg of the leg spring rests on a bevel on the pre-tensioning lever.
- a bevel is provided on the pre-tensioning lever.
- the second leg of the leg spring rests against this bevel. If the pre-tensioning lever mounted in the lock case is moved or preferably pivoted, the spring travel of the leg spring, i.e. the spread, changes. If the leg is spread out a little, a lower force will be applied to the leg springs, whereas if the legs are compressed, a high force will be applied to the leg spring.
- the leg spring can therefore be pre-tensioned and relaxed using the simplest constructional means.
- the pre-tensioning lever In order to secure the position of the pre-tensioning lever, the pre-tensioning lever must be locked in at least P23029WO 8 January 15, 2024 position.
- the pre-tensioning lever is pivotably mounted in the lock case.
- the pre-tensioning lever is spring-loaded by the leg spring and the attachment of the second leg.
- a blocking lever is used so that the pre-tensioning lever can be held in the different positions. If the pre-tensioning lever is transferred to a pre-tensioned position, as described below using the rotary latch, the blocking lever is able to secure the pre-tensioning lever in the tensioned position or to block the movement of the pre-tensioning lever.
- the blocking lever is mounted in the lock case and can at least be brought into engagement with the pre-tensioning lever.
- the blocking lever can be snapped into a recess in the pre-tensioning lever.
- This further structurally simple possibility of a secure interaction between the pre-tensioning lever and the blocking lever enables precise positioning and secure holding of the pre-tensioning lever.
- the blocking lever can be operated using the rotary latch, a further design variant of the invention can be achieved.
- the rotary latch works together with a pawl as described above and together with the pawl forms the locking mechanism. In the main locking position of the locking mechanism, the rotary latch is in the rest position in a maximum retracted position, regardless of an over-stroke position when locking.
- the pre-tension lever can be pre-tensioned using the simplest of design means.
- the rotary latch is closed or moved to its main locking position and at the same time the pre-tension lever is moved to a tensioned position.
- the blocking lever is then simultaneously brought into engagement with the pre-tension lever, in particular by a spring pre-tension.
- the final closing in the main locking position is therefore used to pre-tension the leg spring.
- the blocking lever has a first arm that can be brought into engagement with the pre-tension lever and a second arm that can be brought into engagement with the rotary latch.
- the rotary latch takes on a dual function.
- the rotary latch works together with the pawl in the sense of a locking mechanism and secures the hood or flap.
- the rotary latch also controls the pre-tensioning of the pre-tensioning lever by the rotary latch working together with the blocking lever.
- the blocking lever can be moved out of engagement with the pre-tensioning lever by means of the rotary latch and thus release the pre-tensioning lever.
- the solution to the problem can also be provided by a method for closing motor vehicle locks in which the rotary latch is acted upon by the force of a leg spring and the leg spring is acted upon with a large force when the lock is opened and with a smaller force when the lock is closed. This makes it easy to close the lock.
- the blocking lever 4 engages on one side in a recess 16 of the pre-tensioning lever 6 and secures the position of the pre-tensioning lever 6.
- the pre-tensioning lever 6, in turn, is spring-loaded via the second leg 17 of the leg spring 7 and, like the other movable components 4, 5, 6, is pivotally held in the lock case 2 by means of an axis 18.
- the leg spring 7 also applies a force F to the pre-tensioning lever, whereby the force F acts in an anti-clockwise direction with respect to the pre-tensioning lever 6.
- the spring 7 is maximally pre-tensioned and held between the bolt 10 and a bevel 19 of the pre-tensioning lever 6. In this position of the spring 7, a maximum force can therefore be exerted on the rotary latch 3.
- the leg spring 17 introduces a maximum force F into the rotary latch 3 and thus the lock holder 8 starting from the main locking position, which makes it easy to open and lift the hood and safely move it into the pre-locking or catch position.
- the rotary latch is loaded with a high force F by the compressed spring 7, so that an assisted opening of the hood is possible.
- the spring 7 is as relaxed as possible, so that the rotary latch 3 is only subjected to a small counterforce F.
- the hood P23029WO 15 January 15, 2024 can therefore be opened easily and closed with little resistance.
Landscapes
- Lock And Its Accessories (AREA)
- Superstructure Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023000508.8A DE102023000508A1 (de) | 2023-02-15 | 2023-02-15 | Schloss für ein Kraftfahrzeug, insbesondere Hauben- oder Klappenschloss |
| PCT/DE2024/100031 WO2024170031A1 (de) | 2023-02-15 | 2024-01-15 | Schloss für ein kraftfahrzeug, insbesondere hauben- oder klappenschloss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4665926A1 true EP4665926A1 (de) | 2025-12-24 |
Family
ID=89843415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24703263.4A Pending EP4665926A1 (de) | 2023-02-15 | 2024-01-15 | Schloss für ein kraftfahrzeug, insbesondere hauben- oder klappenschloss |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4665926A1 (de) |
| JP (1) | JP2026505124A (de) |
| KR (1) | KR20250145680A (de) |
| CN (1) | CN120813747A (de) |
| DE (1) | DE102023000508A1 (de) |
| WO (1) | WO2024170031A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023126234A1 (de) * | 2023-09-27 | 2025-03-27 | Kiekert Aktiengesellschaft | Schloss für ein Kraftfahrzeug, insbesondere Hauben- oder Klappenschloss |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29600386U1 (de) | 1996-01-11 | 1997-05-07 | Krosta GmbH & Co KG Nachfolger, 42551 Velbert | Motorhaubenverschluß |
| DE102010061518B4 (de) | 2010-12-23 | 2022-03-24 | Witte Automotive Gmbh | Frontklappenschloss |
| DE102015122579A1 (de) * | 2015-12-22 | 2017-06-22 | Kiekert Ag | Sicherheitsvorrichtung für ein Kraftfahrzeug mit einer Drehfalle und einer Schutzlage |
| DE102015122583A1 (de) * | 2015-12-22 | 2017-06-22 | Kiekert Ag | Sicherheitsvorrichtung für ein Kraftfahrzeug mit einer Drehfalle und einer Auswurffeder |
| DE202020101077U1 (de) * | 2020-02-27 | 2020-03-11 | Kirchhoff Gmbh & Co. Kg | Schließvorrichtung für Hauben von Fahrzeugen |
| JP7319317B2 (ja) * | 2021-03-29 | 2023-08-01 | 株式会社城南製作所 | 車両用ロック装置 |
-
2023
- 2023-02-15 DE DE102023000508.8A patent/DE102023000508A1/de active Pending
-
2024
- 2024-01-15 EP EP24703263.4A patent/EP4665926A1/de active Pending
- 2024-01-15 JP JP2025546943A patent/JP2026505124A/ja active Pending
- 2024-01-15 CN CN202480018779.1A patent/CN120813747A/zh active Pending
- 2024-01-15 WO PCT/DE2024/100031 patent/WO2024170031A1/de not_active Ceased
- 2024-01-15 KR KR1020257030401A patent/KR20250145680A/ko active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120813747A (zh) | 2025-10-17 |
| DE102023000508A1 (de) | 2024-08-22 |
| JP2026505124A (ja) | 2026-02-10 |
| WO2024170031A1 (de) | 2024-08-22 |
| KR20250145680A (ko) | 2025-10-13 |
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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 |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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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 |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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| 17P | Request for examination filed |
Effective date: 20250901 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| 19U | Interruption of proceedings before grant |
Effective date: 20251201 |
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| 19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20270104 |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DANIHELKA, TOMAS Inventor name: SUK, JAN Inventor name: KEJDANA, ALES Inventor name: DALECKY, MATYAS |