EP0894927B1 - Serrure pour véhicule automobile - Google Patents

Serrure pour véhicule automobile Download PDF

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Publication number
EP0894927B1
EP0894927B1 EP19980114304 EP98114304A EP0894927B1 EP 0894927 B1 EP0894927 B1 EP 0894927B1 EP 19980114304 EP19980114304 EP 19980114304 EP 98114304 A EP98114304 A EP 98114304A EP 0894927 B1 EP0894927 B1 EP 0894927B1
Authority
EP
European Patent Office
Prior art keywords
fork
stop
peripheral edge
component
lock
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
EP19980114304
Other languages
German (de)
English (en)
Other versions
EP0894927A1 (fr
Inventor
Franco Giovanni Ottino
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.)
Magna Closures SpA
Original Assignee
Magna Closures SpA
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 Magna Closures SpA filed Critical Magna Closures SpA
Publication of EP0894927A1 publication Critical patent/EP0894927A1/fr
Application granted granted Critical
Publication of EP0894927B1 publication Critical patent/EP0894927B1/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
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/36—Noise prevention; Anti-rattling means
    • E05B77/38—Cushion elements, elastic guiding elements or holding elements, e.g. for cushioning or damping the impact of the bolt against the striker during closing of the wing
    • 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
    • E05B77/40—Lock elements covered by silencing layers, e.g. coatings
    • 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 present invention relates to a lock for a motor vehicle door.
  • door is used in this description and in the claims in the widest possible sense, to indicate whatsoever component moving between an opening and a closing position of an access aperture to an internal compartment of a motor vehicle.
  • the above terms consequently include in addition to the side doors of the motor vehicle, which will be referred to hereinafter without loss of their general sense, as well as the hoods or front or rear hatches.
  • the locks for motor vehicles generally comprise a support body arranged to be fixed to a motor vehicle door, and a closure mechanism carried by the support body and arranged to connect with a striker integral with an upright of the door itself.
  • the closure mechanism essentially comprises a fork hinged from the support body around a first fixed pin and having a first engaging seat for a generally cylindrical portion of the above striker, and a stop hinged about the support body around a second fixed pin and pushed by a spring to spring couple with a peripheral edge of the fork.
  • the fork moves between an opening position and a complete closure position, in which the said seat engages the striker;
  • the stop has an engaging portion arranged to spring couple with a first and a second shoulder of the peripheral edge of the fork to lock in a releasable manner the fork in relation to the position of complete closure and in a position of part closure, or of first spring movement, intermediate between the opening and complete closure positions.
  • the known lock support body is advantageously fitted with a stop component, for instance a rubber buffer, which cooperates with the stop during the spring coupling phase with the fork to prevent any overrun and thereby impact between the stop engaging portion and the peripheral edge of the fork, allowing at the same time the elimination of noises associated with the said impacts.
  • a stop component for instance a rubber buffer
  • the said stop component nevertheless forms an additional component to be manufactured and fitted to the support body, with consequent increased manufacturing costs for the lock.
  • the said stop component may only operate in one of the said angular positions, generally exclusively in that corresponding with the complete closure position of the fork, thus making inevitable the impact between the fork and the stop in the other position.
  • a shock absorber component is placed, for instance a rubber buffer, which reduces the noise generated during the course of the spring coupling of the stop and the fork though not eliminating it completely, in that it thus allows contact between the stop and the said fork.
  • the said shock absorber once again represents an additional component to be manufactured and fitted to the fork, with consequent increased costs in the manufacture of the lock.
  • US 4,235,462 discloses a lock for a motor vehicle door as defined in the preambule of claim 1.
  • the purpose of the present invention is to achieve a lock for a motor vehicle door, which will allow the simple and economical operation of the disadvantages associated with known locks and as specified above.
  • a lock for a motor vehicle (not illustrated) is indicated as an assembly under reference 1.
  • a lock 1 comprises essentially an envelope 2 arranged to be secured to the said door and internally defining an aperture 3, and a closure mechanism 4 housed within the aperture 3 and arranged to cooperate with a cylindrical portion 5 of a striker 6 represented diagrammatically in dotted lines and integral with a fixed upright (not shown) of the door.
  • the envelope 2 consists of an intermediate body 7, essentially shaped with a moulded plate and made of plastic pressing material, and a pair of metal plates 8 (only one of which is visible in Figure 1) mounted on opposing faces of the body 7 and demarcating thereby the aperture 3; the envelope 2 also has a side aperture 9 arranged to allow the penetration of the portion 5 of the striker 6 in the aperture 3, recessed in particular in body 7 and in one of the plates 8.
  • the closure mechanism 4 comprises a fork 10 and a stop 11 hinged about respective fixed pins 12, 13 integral with the plate 8, extending to the inside of the aperture 3 through the said plates 8 and having respective axes A, B parallel with each other and orthogonal with the said plates 8.
  • the fork 10 consists of a moulded plate made of metal material, and hinged to correspond with an intermediate portion around pin 12, and having a peripheral C-shaped seat 16 arranged to receive portion 5 of the striker 6 and demarcated laterally by a pair of teeth 17, 18.
  • the fork 10 also has along a stretch 19 of its peripheral edge 20 and in the opposing part of the seat 16, a first and a second shoulder 21, 22 arranged to spring cooperate with the stop 11, as is explained in detail below.
  • the fork 10 is advantageously covered externally by a shell 23 ( Figure 4) of plastic material, from which the free ends of the teeth 17, 18 project demarcating the seat 16 and the shoulders 21, 22.
  • the fork 10 rotates between an opening position ( Figure 1), in which the seat 16 is turned towards the aperture 9 of the envelope 2 and thus allows the disengagement of portion 5 of the striker 6 from the closure mechanism 4, and a complete closure position ( Figures 3 and 4), in which the portion 5 of the striker 6 is locked within the seat 16 and the tooth 17 intercepts in a known manner the aperture 9 preventing its escape; the fork 10 is also pushed in a known manner towards the opening position by a spring 24 ( Figures 2 and 3) wound around the pin 12 and secured to the said fork 10 and to a portion 42 (drawn in dotted lines) of the intermediate body 7 of the envelope 2.
  • the stop 11 comprises a metal bearing component 25, hinged about the pin 13 and arranged to spring cooperate with the shoulders 21, 22 of the fork 10, and an actuation arm 26 made of plastic material, arranged to be connected to a control lever system (not illustrated) for the opening of the lock 1, also hinged about the pin 13 and angularly coupled to the bearing component 25 by means of a pair of key components 27, 40 projecting integrally to overhang from the said actuation arm 26.
  • the stop 11 is also pushed towards the fork 10 by a spring 28 ( Figures 2 and 3) wound about the pin 13 and secured to the stop 11 and to a portion 43 (shown in dotted lines) of the intermediate body 7 of the envelope 2.
  • the bearing component 25 consists of a plate essentially coplanar with the fork 10 and has an end L-shaped pin defining an engaging portion 29 arranged to spring couple with the shoulders 21, 22 to lock the fork 10 in releasable manner respectively in the complete closure position and in a part closure position or "first spring movement", the position being intermediate between the opening and the complete closure positions.
  • the actuation arm 26 has in transverse direction to the axis B of pin 13, a length greater than the length of the bearing component 25 in the same direction, and has a first portion 30 hinged about the pin 13 and placed in superimposition and in contact with the bearing component 25, and a second portion 31 projecting longitudinally in relation to the bearing component 25, carrying as an extension a pin 32 arranged to cooperate with the aforesaid control lever system, and placed offset in relation to the fork 10 in a direction parallel with axes A, B, in a manner not interfering with the rotation of the said fork 10.
  • the key component 27 consists of an essentially cylindrical tubular pin, extending in orthogonal manner from one base side 41 of the actuation arm 26, engaged by the pin 13, having externally a longitudinal projection 33 and mounted in a relative seat recessed in the bearing component 25 and having a profile matching the external profile of the key component 27.
  • the key component 40 consists of an essentially oblong projection extending to overhang from the wall 41 in the same direction as the key component 27 and engaging in a relative seat recessed in a front surface of the bearing component 25.
  • the actuation arm 26 of the stop 11 has integrally a stop component 35 operating with the peripheral edge 20 of the fork 10 to prevent impacts between the engaging portion 29 of the bearing component 25 and the peripheral edge 20 following angular spring displacements of the stop 11 during the coupling phase with the respective shoulders 21, 22 of the fork 10 in the complete and part closure position.
  • the stop component 35 consists of an essentially semi-cylindrical hollow dowel, extending to overhang from the walls 41 towards the fork 10 and corresponding with the portion 31 of the actuation arm 26.
  • the stop component 35 cooperates with a curved bearing stretch 38 of the peripheral edge 20 of the fork 10, convex outwardly and placed adjacent to the stretch of the said peripheral edge 20, along which the shoulders are recessed 21, 22.
  • Rotation of the fork 10 initially defines the sliding of the stretch 38 of the peripheral edge 28 on the engaging portion 29 of stop 11; immediately thereupon, the shoulder 22 overtakes engaging portion 29 (part closure position of the fork 10), the stop 11, following the pressure of the spring 28, further pushed towards the fork 10 and contacting a surface 39 of the peripheral edge 20 facing away from the engaging portion 29 and contiguous with the shoulder 22.
  • the locking on the fork 10 by the stop 11 may result either in the complete closure position or in the part closure position, depending on the load applied to the door.
  • the complete closure position is achieved in the event of the load applied to the door defining a pressure on the fork 10 sufficient to take both shoulders 21, 22 beyond the engaging portion 29 of the stop 11, whereas the part closure position is achieved in the event of load imposed on the door defining a pressure on the fork 10 sufficient only to take the shoulder 22 beyond the engaging portion 29 of the stop 11.
  • the bearing component 35 being integral with the actuation arm 26 of the stop 11, is active regardless of the relative position between the fork 10 and the stop 11; more specifically, the bearing component 35 prevents impacts between the engaging portion 29 of the stop 11 and the peripheral edge 20 of the fork 10 in both part and complete closure positions of the said fork 10, although when the said positions are defined by respective angular positions of the stop 11 which differ from each other.
  • the stop component 35 no longer forms an additional component to be manufactured and fitted to the envelope 2, but is formed integrally on the actuation arm 26 of the stop 11 thus not involving additional costs.
  • the lock 1 could be secured to the upright of the door and could cooperate with a striker integral with the door itself.

Claims (8)

  1. Système de verrouillage (1) pour porte de véhicule à moteur, comprenant un mécanisme de fermeture (4) agencé pour coopérer avec un percuteur (6), ce mécanisme de fermeture (4) comprenant :
    une fourche (10)articulée autour d'un premier axe (A), complète avec un siège (16) pour une partie (5) du percuteur (6) et tournant autour du premier axe (A) entre une position d'ouverture et au moins une position de fermeture complète dans laquelle ladite pârtie (5) du percuteur (6) est en prise avec le siège (16),
    une butée (11) articulée autour d'un deuxième axe (B), poussée par un moyen élastique (28) vers un bord périphérique (20) de la fourche (10) et comportant une partie métallique de prise (29) agencée pour s'accoupler élastiquement avec ledit bord périphérique (20) pour bloquer de manière libérable la fourche (10) dans la position de fermeture complète, et
    un élément d'arrêt (35) en matière plastique, porté par la butée (11) en faisant corps avec celle-ci et coopérant avec le bord périphérique (20) de la fourche (10) pour empêcher des chocs entre la fourche (10) et la partie de prise (29) de la butée (11) pendant la phase d'accouplement élastique de celle-ci,
       caractérisée par le fait que la butée (11) comprend un élément métallique d'appui (25) articulé autour du deuxième axe (B) et pourvu de la partie de prise (29), un bras d'actionnement en matière plastique (26) aussi articulé autour du deuxième axe (B), et un moyen d'accouplement angulaire (27, 40) entre l'élément d'appui (25) et le bras d'actionnement (26), l'élément d'arrêt (35) étant porté par le bras d'actionnement (26) en faisant corps avec celui-ci.
  2. Système de verrouillage selon la revendication 1, caractérisée par le fait que le bord périphérique (20) de la fourche (10) comporte un premier et un deuxième épaulements (21, 22) et que la partie de prise (29) de la butée (11) est poussée par le moyen élastique (28) de façon à s'accoupler élastiquement avec les premier et deuxième épaulements (21, 22) pour bloquer de manière libérable la fourche (10) respectivement dans la position de fermeture complète et dans une position de fermeture partielle située entre la position d'ouverture et la position de fermeture complète, l'élément d'arrêt (35) coopérant avec le bord périphérique (20) de la fourche (10) pour empêcher des chocs entre la partie de prise (29) de la butée (11) et le bord périphérique (20) de la fourche (10) par suite de déplacement angulaire élastique de la butée (11) pendant la phase d'accouplement avec les premier et deuxième épaulements (21, 22).
  3. Système de verrouillage selon l'une des revendications 1 et 2, caractérisée par le fait que les premier et deuxième axes (A, B) sont parallèles et le bras d'actionnement (26) est superposé à l'élément d'appui (25) et comporte une partie saillante (31) en relation avec l'élément d'appui (25) et décalée par rapport à la fourche (10) dans une direction parallèle aux premier et deuxième axes (A, B) de façon à éviter une interférence avec la rotation de la fourche (10), l'élément d'arrêt (35) s'étendant en surplomb vers la fourche (10) de la partie saillante (31) du bras d'actionnement (26).
  4. Système de verrouillage selon l'une des revendications précédentes, caractérisée par le fait que l'élément d'arrêt (35) est creux.
  5. Système de verrouillage selon l'une des revendications précédentes, caractérisée par le fait que l'élément d'arrêt (35) est constitué d'un goujon sensiblement hémicylindrique.
  6. Système de verrouillage selon l'une des revendications 2 à 5, caractérisée par le fait que l'élément d'arrêt (35) coopère avec une extension d'appui courbe (38) du bord périphérique (20) de la fourche (10) placée latéralement par rapport à une extension (19) du bord périphérique (20) le long de laquelle les premier et deuxième épaulements (21, 22) sont rentrées.
  7. Système de verrouillage selon la revendication 6, caractérisée par le fait que l'extension d'appui (38) du bord périphérique (20) de la fourche (10) est convexe vers l'extérieur.
  8. Système de verrouillage selon l'une des revendications 2 à 7, caractérisée par le fait que la fourche (10) est en métal et couverte extérieurement d'une coquille (23) en matière plastique d'où les épaulements (21, 22) au moins font saillie.
EP19980114304 1997-07-31 1998-07-30 Serrure pour véhicule automobile Expired - Lifetime EP0894927B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO970693 1997-07-31
IT97TO000693 IT1296290B1 (it) 1997-07-31 1997-07-31 Serratura per una porta di un autoveicolo con azionamento di chiusura a rumorosita ridotta.

Publications (2)

Publication Number Publication Date
EP0894927A1 EP0894927A1 (fr) 1999-02-03
EP0894927B1 true EP0894927B1 (fr) 2003-09-17

Family

ID=11415915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980114304 Expired - Lifetime EP0894927B1 (fr) 1997-07-31 1998-07-30 Serrure pour véhicule automobile

Country Status (6)

Country Link
EP (1) EP0894927B1 (fr)
BR (1) BR9806614A (fr)
DE (1) DE69818171T2 (fr)
ES (1) ES2207774T3 (fr)
IT (1) IT1296290B1 (fr)
PL (1) PL327776A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801625B1 (fr) * 1999-11-30 2003-05-30 Vachette Sa Serrure resistante au feu
DE102016123086A1 (de) * 2016-11-30 2018-05-30 Kiekert Ag Schloss für ein Kraftfahrzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688509A (en) * 1951-03-06 1954-09-07 Rudolph I Schonitzer Door latch mechanism
DE2320351A1 (de) * 1973-04-21 1974-10-31 Kiekert Soehne Arn Kraftfahrzeug-tuerverschlussgehaeuse
JPS5811878Y2 (ja) * 1977-04-20 1983-03-07 アイシン精機株式会社 自動車用ドアロツク装置
JPS53138127A (en) * 1977-05-05 1978-12-02 Mazda Motor Corp Sound preventive device for door lock
US5632517A (en) * 1996-05-21 1997-05-27 General Motors Corporation Vehicle closure latch

Also Published As

Publication number Publication date
ITTO970693A1 (it) 1999-01-31
EP0894927A1 (fr) 1999-02-03
ES2207774T3 (es) 2004-06-01
DE69818171D1 (de) 2003-10-23
IT1296290B1 (it) 1999-06-21
PL327776A1 (en) 1999-02-01
BR9806614A (pt) 2000-06-06
DE69818171T2 (de) 2004-07-01

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