EP1176273B1 - Dispositif de verrouillage - Google Patents

Dispositif de verrouillage Download PDF

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Publication number
EP1176273B1
EP1176273B1 EP20010305984 EP01305984A EP1176273B1 EP 1176273 B1 EP1176273 B1 EP 1176273B1 EP 20010305984 EP20010305984 EP 20010305984 EP 01305984 A EP01305984 A EP 01305984A EP 1176273 B1 EP1176273 B1 EP 1176273B1
Authority
EP
European Patent Office
Prior art keywords
latch
opening
latch bolt
power actuator
movement
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.)
Expired - Lifetime
Application number
EP20010305984
Other languages
German (de)
English (en)
Other versions
EP1176273A2 (fr
EP1176273A3 (fr
Inventor
Kalsi Gurbinder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meritor Technology LLC
Original Assignee
ArvinMeritor Light Vehicle Systems UK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ArvinMeritor Light Vehicle Systems UK Ltd filed Critical ArvinMeritor Light Vehicle Systems UK Ltd
Publication of EP1176273A2 publication Critical patent/EP1176273A2/fr
Publication of EP1176273A3 publication Critical patent/EP1176273A3/fr
Application granted granted Critical
Publication of EP1176273B1 publication Critical patent/EP1176273B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E05B81/20—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
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/36—Noise prevention; Anti-rattling means

Definitions

  • the present invention relates to latch arrangements, and in particular latch arrangements associated with doors of vehicles such as automobiles.
  • Known automobile doors include elasometric door seals secured to the periphery of the door which are compressed when the door is closed and the door seals come into contact with the periphery of the door aperture.
  • Modem trends in automobile manufacture require high door seal loads to reduce wind generated noise when the vehicle is moving.
  • US6050117 shows a power closure latch having a motor that is operated to drive a rotating claw from a first safety position to a closed position. However, the motor is only operated during closing of the latch and no motor operation occurs during opening of the latch.
  • the door is held in a closed position by virtue of a rotating claw, mounted on the latch, being in engagement with a striker, typically mounted on fixed structure of the vehicle.
  • the claw is held in its closed position (or in a first safety position) by a pawl engaging a notch on the periphery of the claw.
  • the pawl is disengaged from the claw notch. This then allows unrestrained movement of the claw.
  • the door seals tend to spring the door open relatively fast and in doing so spring open the latch mechanism since the claw is now unrestrained.
  • the time taken to open door under such circumstances is 40-70 milli seconds.
  • the latch mechanism can spring open with increasing force which itself generates noise as the various latch components come to a halt when the latch achieves a fully open condition.
  • An object of the present invention is to provide an improved form of latch arrangement which generates less noise upon opening.
  • Another object of the present invention is to provide a latch arrangement with fewer components.
  • latch arrangement 10 including a latch bolt in the form of a rotating claw 12, a first pawl 14, a first pawl lever 15, a second pawl 16, a second pawl release lever 18, a power actuator 20 (in this case an electric actuator, shown schematically) and a power actuator transmission path 22 (also shown schematically).
  • Transmission path 22 includes a relatively large movement (or gearing) reduction in order to increase the force applied to first arm 42 (at the expense of a reduction in speed).
  • the latch arrangement 10 will be secured to a door.
  • the claw 12 is pivotally mounted at pivot 24 relative to a chassis 26 (only part shown) of the latch arrangement.
  • the claw includes a mouth 28 within which can be releasably retained a striker 30 which is attached to a stationary part of the vehicle such as a B post or a C post.
  • the claw further includes a closed abutment 32, a first safety abutment 34 and a movement abutment 36.
  • Second pawl 16 is pivotable about pivot 38, the axis of which is fixed relative to the chassis 26.
  • Second pawl 16 includes a pawl tooth 40 which is releasably engagable with the closed abutment 32 and first safety abutment 34, dependent upon the position of the components of the latch arrangement.
  • Second pawl release lever 18 is also pivotable about pivot 38 and is operably connected to an inside and an outside door handle (not shown).
  • the first pawl lever 15 is pivotally mounted about pivot 24 and includes a first arm 42 and a second arm 44.
  • Power actuator 20 is connected to first arm 42 via the power actuator transmission path. Operation of the power actuator causes the first pawl lever 15 to rotate in an anticlockwise direction about pivot 24.
  • First pawl 14 is pivotally mounted via pivot 46 on second arm 44.
  • First pawl 14 includes a first pawl tooth 48, which is releasably engagable with the movement abutment 36, and a release lug 50 which is engagable with release pin 52.
  • Release pin 52 is mounted in a fixed position relative to the chassis 26.
  • the latch arrangement is shown in a first safety position whereby the associated door cannot be opened but is nevertheless not in a fully closed position. It should be noted that pawl tooth 40 is engaged with first safety abutment 34 to prevent opening of the claw 12. Furthermore release lug 50 is engaged with release pin 52 which causes the first pawl tooth 48 to disengage from movement abutment 36 of claw 12.
  • Sensors such as microswitches, are able to detect when the latch arrangement has moved from the fully open condition to the first safety condition as shown in figure 1.
  • the control unit 54 (shown schematically) activates the power actuator 20 causing first arm 42 of the first pawl lever (and hence second arm 44 and first pawl 14) to progressively move in an anticlockwise direction through the position shown in figure 2 to the position shown in figure 3.
  • the time taken to move from the position as shown in figure 1 to the position as shown in figure 3 would be 2 seconds. In particular this is due in part to the gear reduction as mentioned above, between power actuator 20 and first arm 42.
  • FIG. 2 shows that the first pawl lever 15 has moved such that release lug 50 has almost disengaged release pin 52. This has allowed first pawl tooth 48 to engage movement abutment 36. Note that in the position shown in figure 2 second pawl tooth 40 is still engagement with first safety abutment 34.
  • first pawl lever 15 causes the claw 12 to rotate to the position as shown in figure 3 since it is driven to this position by co-operation of first pawl tooth 48 and movement abutment 36.
  • the second pawl tooth 40 is positioned opposite closed abutment 32, though not in contact with it since the power actuator is still activated.
  • the control unit 54 deactivates the power actuator 20 and the first pawl lever 15 returns to the position as shown in figure 4 under the action of a return spring (not shown). Note that in figure 4 the first pawl 14 has being caused to rotate clockwise about pivot 46 relative to first pawl lever 15 as a result of engagement between release lug 50 and release pin 52.
  • control unit 54 activates the power actuator with causes the latch arrangement to move from a position as shown in figure 4 to the position as shown in figure 3. Note that the time taken to move between the positions is significantly less than 2 seconds since the motor only has to act against the above mentioned return spring (not shown), and in particular does not have to close the door against the door seal force.
  • control unit 54 progressively reduces the power supply to the power actuator until such time as the power actuator can no longer maintain the door in a closed position against the influence of the door seals and thus the door starts to open. Further reduction in power causes the first pawl lever to rotate to the position as shown in figure 1 whereupon release lug 50 engages release pin 52 hence causing first pawl tooth 48 to disengage movement abutment 36. It should be noted that under these circumstances the inside or outside door handle is still operated and thus second pawl tooth 40 is held clear of the closed abutment 32 and first safety abutment 34. Once the latch arrangement has achieved the position as shown in figure 1, the claw is then free to rotate to its open condition since neither of the pawls are restraining it from opening.
  • the present invention allows progressive opening of the claw 12 and thus prevents the claw opening quickly in an unrestrained manner and causing noise as it hits stops such as elastomeric buffers which define its fully open position.
  • the power actuator 20 can be moved from the position as shown in figure 4 to the position as shown in figure 3 by applying a first polarity to the terminals of the power actuator (as described above with reference to the first embodiment). However, once the mechanism has achieved the position in figure 3, the power actuator can then be reversed polarised in order to open the door. It should be noted that, under the circumstances, even though the power actuator 20 is, from an initial consideration, forcing lever 50 clockwise, and thus apparently opening the door quicker, a deeper consideration of the mechanism shows that, in fact, the power actuator 20 is acting in an "engine braking" mode, and this in fact slows opening of the claw, when compared with unrestrained opening.
  • embodiments of latch arrangements according to the present invention which incorporates power opening of the latch may not require stops such an elasometric buffers and the like operable to reduce impact noise since the latch arrangement opens in a controlled manner such that no or little noise is generated as the various latch components move to their fully open position.
  • modem door seals do not have a linear spring rate, instead they have a rising spring rate as the door moves from the first safety position to the fully closed position.
  • controlled opening of the latch is most beneficial over an initial opening of an associated door since by controlling initial opening of the door most of the energy stored within the door seals can be dissipated in a controlled manner.

Landscapes

  • Lock And Its Accessories (AREA)

Claims (17)

  1. Un procédé pour ouvrir un verrou, comprenant les étapes consistant à prévoir un agencement de verrou (10), comprenant un crochet de verrou (12) déplaçable entre au moins un état fermé, auquel il est capable de retenir une broche à chocs ou gâche (30) en utilisation, et un état ouvert, auquel il est capable de relâcher la gâche, et un actionneur motorisé (20), caractérisé en ce que l'actionneur motorisé (20) est actionné pour résister au déplacement du crochet de verrou (12) durant au moins une partie d'un déplacement d'ouverture du crochet de verrou (12).
  2. Un procédé d'ouverture d'un verrou tel que défini à la revendication 1, dans lequel l'actionneur motorisé (20) est actionné pour résister à un déplacement initial d'ouverture du crochet de verrou (12).
  3. Un procédé d'ouverture d'un verrou tel que défini à la revendication 1 ou 2, dans lequel le crochet de verrou (12) présente un premier état de sécurité (34), pour lequel il est capable de retenir une gâche (30) en utilisation, bien que n'étant pas en un état complètement fermé, dans lequel l'actionneur motorisé (20) est actionné pour résister au déplacement du crochet de verrou (12) pendant au moins une partie du déplacement d'ouverture du crochet de verrou (12) entre l'état fermé et le premier état de sécurité.
  4. Un procédé d'ouverture d'un verrou tel que défini à la revendication 3, dans lequel l'actionneur motorisé (20) n'est pas actionné pour résister au déplacement du crochet de verrou durant un déplacement d'ouverture du crochet de verrou (12), entre le premier état de sécurité et l'état complètement ouvert.
  5. Un procédé d'ouverture d'un verrou tel que défini aux revendication 1 à 4, dans lequel l'actionneur motorisé (20) est actionné dans un sens d'ouverture, tout en résistant au déplacement du crochet de verrou (12) durant au moins une partie d'un déplacement d'ouverture du crochet de verrou (12).
  6. Un agencement de verrou (10) comprenant un crochet de verrou (12) déplaçable entre au moins un état fermé, auquel il est capable de retenir une gâche (30) en utilisation, et un état ouvert, auquel il est capable de relâcher la gâche, une unité de commande (54) et un actionneur motorisé (20) susceptible d'être actionné pour résister au déplacement du crochet de verrou (12) durant au moins une partie d'un déplacement d'ouverture du crochet de verrou (12), caractérisé en ce que l'unité de commande (54) est configurée pour commander l'actionneur motorisé (20), pour qu'il puisse fonctionner pour résister au déplacement du crochet de verrou (12), durant ladite au moins une partie du déplacement d'ouverture du crochet de verrou (12).
  7. Un agencement de verrou (10) tel que défini à la revendication 6, dans lequel l'actionneur motorisé (20) est susceptible de fonctionner pour résister à un déplacement initial d'ouverture du crochet de verrou (12).
  8. Un agencement de verrou (10) tel que défini à la revendication 6 ou 7, dans lequel le crochet de verrou (12) présente un premier état de sécurité (34), auquel il est capable de retenir une gâche (30) en utilisation, bien que n'étant pas en un état complètement fermé, dans lequel l'actionneur motorisé (20) est susceptible de fonctionner pour résister au déplacement du crochet de verrou (12), durant au moins une partie d'un déplacement d'ouverture du crochet de verrou (12) entre l'état fermé et le premier état de sécurité.
  9. Un agencement de verrou (10) tel que défini aux revendications 6 à 8, dans lequel l'actionneur motorisé (20) est incapable de fonctionner pour résister au déplacement du crochet de verrou (12) durant un déplacement d'ouverture du crochet de verrou (12), entre le premier état de sécurité et l'état complètement ouvert.
  10. Un agencement de verrou (10) tel que défini aux revendications 6 à 9, dans lequel l'actionneur motorisé (20) est actionné dans le sens de l'ouverture, tout en résistant au déplacement du crochet de verrou (12) durant au moins une partie du déplacement d'ouverture du crochet de verrou (12).
  11. Un procédé d'ouverture d'un verrou tel que défini aux revendications 1 à 5 ou un agencement de verrou tel que défini aux revendications 6 à 10, dans lequel l'actionneur motorisé (20) est susceptible d'être relié fonctionnellement au crochet de verrou (12) par un premier cliquet (14).
  12. Un procédé d'ouverture d'un verrou tel que défini aux revendications 1 à 5 et 11, ou un agencement de verrou tel que défini aux revendications 6 à 11, dans lequel l'actionneur motorisé (20) est susceptible de fonctionner pour fermer le verrou, du premier état de sécurité à l'état fermé.
  13. Un procédé d'ouverture d'un verrou tel que défini aux revendications 1 à 5 et 11 à 12, ou un agencement de verrou tel que défini aux revendications 6 à 12, dans lequel le crochet de verrou (12) est retenu à l'état fermé par un deuxième cliquet (40).
  14. Un procédé d'ouverture d'un verrou tel que défini à la revendication 13 dépendant de la revendication 3, ou un agencement de verrou tel que défini à la revendication 13 dépendant de la revendication 8, dans lequel le crochet de verrou (12) est capable d'être retenu en un premier état de sécurité par le deuxième cliquet (40).
  15. Un procédé d'ouverture d'un verrou tel que défini aux revendications 1 à 5 et 11 à 14, ou un agencement de verrou tel que défini aux revendications 6 à 14, dans lequel l'actionneur motorisé (20) est un actionneur électrique.
  16. Un procédé d'ouverture d'un verrou tel que défini aux revendications 1 à 4 et 11 à 15, ou un agencement de verrou tel que défini aux revendications 6 à 9 ou 11 à 15, dans lequel l'actionneur motorisé (20) est actionné dans le sens de fermeture de verrou tout en résistant au déplacement du crochet de verrou (12) durant au moins une partie du déplacement d'ouverture du crochet de verrou (12).
  17. Un procédé d'ouverture d'un verrou tel que défini aux revendications 1 à 5 et 11 à 16, ou un agencement de verrou tel que défini aux revendications 6 à 16, dans lequel l'actionneur motorisé (20) est un moteur, et une réduction cinématique à roues dentées, est prévue entre le moteur et le crochet de verrou (12).
EP20010305984 2000-07-25 2001-07-11 Dispositif de verrouillage Expired - Lifetime EP1176273B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0018101 2000-07-25
GB0018101A GB0018101D0 (en) 2000-07-25 2000-07-25 Latch arrangement

Publications (3)

Publication Number Publication Date
EP1176273A2 EP1176273A2 (fr) 2002-01-30
EP1176273A3 EP1176273A3 (fr) 2003-08-06
EP1176273B1 true EP1176273B1 (fr) 2007-01-24

Family

ID=9896211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010305984 Expired - Lifetime EP1176273B1 (fr) 2000-07-25 2001-07-11 Dispositif de verrouillage

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EP (1) EP1176273B1 (fr)
DE (1) DE60126202D1 (fr)
GB (1) GB0018101D0 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004052599A1 (de) * 2004-10-29 2006-05-04 Bayerische Motoren Werke Ag Schloss an einer Tür oder Klappe, mit einer Öffnungshilfe, insbesondere für Fahrzeugtüren
DE102004054739B4 (de) * 2004-11-12 2022-12-15 Bayerische Motoren Werke Aktiengesellschaft Schloss mit motorischer Schliesshilfe
DE102007025309A1 (de) * 2007-05-30 2008-12-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Verschluss für Fahrzeuge
DE102014003737A1 (de) * 2014-03-18 2015-09-24 Kiekert Aktiengesellschaft Schließvorrichtung für eine Kraftfahrzeughaube
US10767397B2 (en) 2015-02-25 2020-09-08 Magna Closures S.P.A. Single motor latch assembly with power cinch and power release having soft opening function
DE102016218299A1 (de) * 2015-09-29 2017-03-30 Magna Closures S.P.A. Ein-Motor-Verriegelungsanordnung mit Kraft-Anzug und Kraft-Entriegelung mit einer weichen Öffnungsfunktion
US10767396B2 (en) 2016-08-15 2020-09-08 Magna Closures Inc. Vehicular latch assembly with latch mechanism having pop-off sound reduction
US10895095B2 (en) 2016-10-06 2021-01-19 Magna Closures S.P.A. Power closure latch assembly with cinch mechanism having ratchet retention function
US11525289B2 (en) 2017-07-17 2022-12-13 Magna Closures Inc. Vehicular closure latch assembly with roller-type latch mechanism and cinch mechanism
US20190301212A1 (en) 2018-03-27 2019-10-03 Magna BOCO GmbH Closure latch assembly with latch mechanism having a dual-pawl configuration
CN113756665B (zh) 2020-06-02 2023-02-17 麦格纳覆盖件有限公司 闭合闩锁组件及对闭合闩锁组件的操作进行控制的方法
DE102022111754A1 (de) 2021-05-26 2022-12-01 Magna Closures Inc. Verschluss-verriegelungsanordnung mit einem kraftbetätigten anzug-mechanismus mit einer anzug-klinke

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2264147T3 (es) * 1995-10-13 2006-12-16 BROSE SCHLIESSSYSTEME GMBH & CO. KG Cerradura de puerta o de capo de vehiculo automovil.
US5938252A (en) * 1996-08-22 1999-08-17 Asmo Co., Ltd. Door member locking/unlocking apparatus
DE19714992A1 (de) * 1997-03-19 1998-09-24 Bosch Gmbh Robert Kraftfahrzeug-Türschloß o. dgl. mit einem Schließhilfsantrieb

Also Published As

Publication number Publication date
DE60126202D1 (de) 2007-03-15
EP1176273A2 (fr) 2002-01-30
GB0018101D0 (en) 2000-09-13
EP1176273A3 (fr) 2003-08-06

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