EP0995870B1 - Serrure pour porte de véhicule automobile - Google Patents

Serrure pour porte de véhicule automobile Download PDF

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Publication number
EP0995870B1
EP0995870B1 EP99120816A EP99120816A EP0995870B1 EP 0995870 B1 EP0995870 B1 EP 0995870B1 EP 99120816 A EP99120816 A EP 99120816A EP 99120816 A EP99120816 A EP 99120816A EP 0995870 B1 EP0995870 B1 EP 0995870B1
Authority
EP
European Patent Office
Prior art keywords
fork
lock
fully closed
closed position
supporting casing
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
EP99120816A
Other languages
German (de)
English (en)
Other versions
EP0995870A1 (fr
Inventor
Roberto Sbrana
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
Intier Automotive Eybl (Germany) GmbH
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 Intier Automotive Eybl (Germany) GmbH filed Critical Intier Automotive Eybl (Germany) GmbH
Publication of EP0995870A1 publication Critical patent/EP0995870A1/fr
Application granted granted Critical
Publication of EP0995870B1 publication Critical patent/EP0995870B1/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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a lock for a door of a motor vehicle.
  • door is used in its widest sense in the present description and in the claims, to indicate any element movable between a position of opening and a position of closing a gap for access to an internal compartment of a vehicle.
  • the aforesaid term therefore covers not only the side doors of motor vehicles, to which reference will be made in the following text without thereby departing from the general application, but also the front or rear bonnets or hatches.
  • a lock for motor vehicles generally comprises a supporting casing which can be fixed to a door of the motor vehicle, and a locking mechanism carried by the supporting casing and capable of being coupled to a striker integral with a jamb of the door.
  • the locking mechanism essentially comprises a fork hinged to the supporting casing about a first fixed pin and having an engagement seat for a generally cylindrical portion of the aforesaid striker, and a pawl hinged to the supporting casing about a second fixed pin and pushed by a spring so that it snap-fits to a peripheral edge of the fork.
  • the fork made from metallic material
  • a shell made from plastic material
  • the fork is pushed by a corresponding spring towards an open position, in which it permits the engagement and disengagement between the cylindrical portion of the striker and its seat, and is rotatable about the first pin along a path for coupling to the pawl to take up at least one fully closed position, in which the cylindrical portion of the striker is locked in its seat.
  • the pawl has an engagement portion which can be snap-coupled to the peripheral edge of the fork to lock the fork releasably in the fully closed position.
  • the supporting casing is provided with a fixed arresting element capable of intercepting the fork in a stop position located after the fully closed position along a forward portion of the path for coupling to the pawl, and of causing a restraining reaction on the fork to move it into the fully closed position along a return portion of the coupling path opposed to the aforesaid forward portion.
  • the rigid contact between the arresting element and the fork has the disadvantage that it causes a rapid return of the fork coupled to the engagement portion of the pawl, with a consequent high impact noise.
  • DE-A-2 320 351 discloses a lock for a motor vehicle door, as defined in the preamble of claim 1.
  • the object of the present invention is to provide a lock for a door of a motor vehicle which is capable of avoiding in a simple and economical way the disadvantage associated with the known locks as described above, and which, in particular, is capable of considerably reducing the noise generated by its operation.
  • the aforesaid object is achieved by the present invention by providing a lock for a door of a motor vehicle as claimed in claim 1.
  • the number 1 indicates as a whole a lock for a door of a motor vehicle (the door and vehicle are not illustrated).
  • the lock 1 essentially comprises a box-shaped supporting casing 2, capable of being fixed to the aforesaid door and forming within itself a compartment 3 and a locking mechanism 4 housed in the compartment 3 and capable of interacting with a cylindrical portion 5 of a striker 6 represented schematically in section and integral with a fixed jamb (not illustrated) of the door.
  • the supporting casing 2 also has a lateral aperture 9 capable of permitting the entry of the portion 5 of the striker 6 into the compartment 3.
  • the locking mechanism 4 comprises a fork 10 and a pawl 11 hinged about pins 12, 13 respectively, which are fixed integrally to the supporting casing 2, extending into the compartment 3 from a back wall 8 of the casing, and have axes A, B respectively which are parallel to each other.
  • the fork 10 consists of a shaped plate made from metallic material and covered externally with a shell 14 made from plastic material, is hinged in an intermediate position about the pin 12 and has a C-shaped peripheral seat 16 capable of receiving the portion 5 of the striker 6 and laterally delimited by a pair of teeth 17, 18.
  • the fork 10 is also pushed, in a known way, by a spring (not illustrated) wound about the pin 12, towards an open position ( Figure 1), in which the seat 16 faces the aperture 9 of the casing 2 and therefore permits the engagement and disengagement of the portion 5 of the striker 6 with and from the locking mechanism 4. More precisely, the open position is defined by the contact between a lateral thickening 19 of the tooth 17 and an extension 20 projecting into the compartment 3 from a wall 21 of the supporting casing 2 located laterally with respect to the aperture 9.
  • the fork 10 Under the pressure of the striker 6 and following the slamming of the door, the fork 10 is rotatable about the axis A along a path for coupling by snap-fitting to the pawl 11 to take up a fully closed position ( Figure 2), in which the portion 5 of the striker 6 is locked in the seat 16 and the tooth 17 blocks the aperture 9 in a known way, preventing the striker 6 from emerging.
  • the pawl 11 consists of a shaped plate substantially coplanar with the fork 10 and made from metallic material, located on the opposite side of the fork 10 from the wall 21, and is pushed in a known way by a spring (not illustrated) wound about the pin 13 towards a peripheral edge 22 of the fork 10.
  • the pawl 11 has an L-shaped edge forming an engagement portion 23 which can be snap-coupled to a free end of the tooth 18 and with a lateral shoulder 24 of the tooth 18 to releasably lock the fork 10 in the fully closed position or in a partial or "first click" position (not illustrated) which is intermediate between the fully open and fully closed positions.
  • the pawl 11 also has a terminal extension 25 projecting laterally from the engagement portion 23, and a peg 26 extending from the extension 25 in a direction substantially parallel to the axes A, B and capable of interacting with a lever mechanism (not illustrated since it does not form part of the present invention) controlling the opening of the lock 1.
  • the supporting casing 2 comprises a first arresting element 30 which is integral with a wall 31 of the supporting casing 2 opposite the aperture 9 and substantially orthogonal to the wall 21, and which extends from the wall 31 towards the interior of the compartment 3.
  • the arresting element 30 is capable of intercepting the fork 10 in a stop position ( Figure 3) located after the fully closed position along a forward portion of the path for coupling to the pawl 11, and of causing a restraining reaction on the fork 10 to move it to the fully closed position along a return portion of the coupling path opposite the forward portion.
  • the locking mechanism 4 also comprises an elastic leaf spring element 32 of elongate form, made from plastic material, carried integrally by the peripheral edge 22 of the shell 14 of the fork 10 and capable of bending when bearing against a flat contact surface 29 of the arresting element 30 at the end of the forward portion of the path for coupling to the pawl 11, to produce a braking action on the subsequent return portion of the coupling path (Figure 3).
  • the elastic element 32 has corresponding end portions 33 integral with a section 34 of the peripheral edge 22 of the fork 10 opposite the tooth 18, and an intermediate portion 35 spaced apart from the aforesaid section 34 and delimiting with the latter a slot 36.
  • the intermediate portion 35 of the elastic element 32 has a cross-section which is wider than the cross-section of the end portions 33 and which projects towards the interior of the slot 36.
  • the supporting casing 2 also comprises, within the compartment 3, a second arresting element 37, which forms an end stop for the pawl 11 in the angular position in which it locks the fork 10 in the fully closed position ( Figure 2) and is provided, in turn, with a damper contact element 38, which in this example is a rubber block; more particularly, in operation, the extension 25 of the pawl 11 interacts with the damper element 38.
  • a second arresting element 37 which forms an end stop for the pawl 11 in the angular position in which it locks the fork 10 in the fully closed position ( Figure 2) and is provided, in turn, with a damper contact element 38, which in this example is a rubber block; more particularly, in operation, the extension 25 of the pawl 11 interacts with the damper element 38.
  • the lock 1 is closed from outside or inside the motor vehicle simply by slamming the door; this causes an impact of the portion 5 of the striker 6 against the tooth 18 of the fork 10, which rotates in an anticlockwise direction from the open position in Figure 1 towards the fully closed position in Figure 2 along the path for coupling to the pawl 11.
  • the rotation of the fork 10 along the forward portion of the coupling path initially causes the peripheral edge 22 to slide on the engagement portion 23 of the pawl 11; as soon as the shoulder 24 passes beyond the engagement portion 23 (position of partial closure of the fork 10), the pawl 11, pushed by the corresponding spring, jumps to a position closer to the fork 10, becoming coupled to the shoulder 24.
  • the locking of the fork 10 by the pawl 11 may take place either in the fully closed position or in the partially closed position, according to the force exerted on the door.
  • the fully closed position is reached if the force exerted on the door causes a pressure on the fork 10 sufficient to bring the elastic element 32 into contact with the arresting element 30 and the tooth 18 beyond the engagement portion 23 of the pawl 11, while the partially closed position is reached if the force exerted on the door causes a pressure on the fork 10 sufficient to bring only the shoulder 24 beyond the engagement portion 23 of the pawl 11.
  • the bending of the elastic element 32 when in contact with the arresting element 30 produces a braking action on the return portion of the path for coupling the fork 10 to the pawl 11, and thus considerably reduces the noise of the subsequent impact of the tooth 18 against the engagement portion 23.
  • the elastic element 32 does not form a supplementary element to be produced and fitted on the arresting element 30 or on the fork 10, but is made in one piece with the shell 14 of the fork 10 and therefore does not entail additional costs compared to known locks.
  • the lock 1 could be fixed to the jamb of the door and could interact with a striker which is integral with the door.

Landscapes

  • Lock And Its Accessories (AREA)

Claims (5)

  1. Serrure (1) pour porte de véhicule automobile, comprenant un boítier de support (2) et un mécanisme de verrouillage (4) logé dans ledit boítier de support (2) et capable d'interagir avec un percuteur (6), ledit mécanisme de verrouillage (4) comprenant :
    une fourche (10) constituée, au moins à l'extérieur, d'un matériau plastique, montée sur le boítier de support (2) autour d'un premier axe (A), pourvue d'un logement (16) pour une partie (5) dudit percuteur (6), et pivotant autour dudit premier axe (A) entre une position ouverte, dans laquelle l'engagement et le désengagement de ladite partie (5) dudit percuteur (6) dans et à partir dudit logement (16) est possible, et au moins une position complètement fermée, dans laquelle ladite partie (5) dudit percuteur (6) est verrouillée dans ledit logement (16) ; et
    un cliquet (11) monté sur ledit boítier de support (2) autour d'un second axe (B), poussé par un moyen élastique vers un bord périphérique (22) de ladite fourche (10) et ayant une partie d'engagement (23) qui peut être raccordée par branchement rapide audit bord périphérique (22) afin de verrouiller de façon déverrouillable ladite fourche (10) dans ladite position complètement fermée ;
       ledit boítier de support (2), comprenant un premier moyen d'arrêt (30) capable d'intercepter ladite fourche (10) dans une position d'arrêt, situé après ladite position complètement fermée le long d'une partie en avant d'un passage destiné à raccorder la fourche (10) audit cliquet (11), et d'occasionner une réaction de retenue sur ladite fourche (10) de manière à la déplacer dans ladite position complètement fermée le long d'une partie de retour du passage de raccord à l'opposé de ladite partie en avant ;
       ledit mécanisme de verrouillage (4) comprenant en outre, au moins un élément de ressort à lame élastique (32) constitué d'un matériau plastique, intégralement porté par ledit bord périphérique (22) de ladite fourche (10) et capable de se courber lorsqu'il vient s'appuyer contre ledit premier moyen d'arrêt (30) à l'extrémité de ladite portion en avant dudit passage de raccord afin d'occasionner une action de freinage sur ladite partie de retour du passage de raccord ; ledit élément de ressort à lame élastique (32) étant de forme allongée et comprenant des parties d'extrémité (33) opposées correspondantes intégrant une section (34) dudit bord périphérique (22) de ladite fourche (10), et une partie intermédiaire (35) éloignée de ladite section (34) dudit bord périphérique (22) et délimitant avec ce dernier une fente (36) ;
       caractérisée en ce que ladite portion intermédiaire (35) dudit élément de ressort à lame élastique (32) possède une section plus large que la section desdites parties d'extrémité (33) et qui dépasse vers l'intérieur de ladite fente (36), ledit élément de ressort à lame élastique (32) étant capable de se courber jusqu'à ce que sa partie intermédiaire (35) soit amenée à s'appuyer contre le bord de ladite fente (36) faisant face à ladite partie intermédiaire (35).
  2. Serrure selon la revendication 1, caractérisée en ce que ledit boítier de support (2) forme en son sein un compartiment (3) dans lequel ledit mécanisme de verrouillage (4) est abrité, et en ce que ledit premier moyen d'arrêt comprend un élément d'arrêt (30) dépassant dans ledit compartiment (3).
  3. Serrure selon la revendication 1 ou 2, caractérisée en ce qu'elle comprend un second moyen d'arrêt (37) logé dans ledit boítier de support (2) et formant un arrêt d'extrémité destiné audit cliquet (11) dans la position angulaire dans laquelle il verrouille ladite fourche (10) dans ladite position complètement fermée, et un moyen d'amortissement (38) interposé entre ledit cliquet (11) et ledit second moyen d'arrêt (37).
  4. Serrure selon la revendication 3, caractérisée en ce que ledit moyen d'amortissement (38) comprend un bloc de caoutchouc logé dans ledit second moyen d'arrêt (37).
  5. Serrure selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite fourche (10) est constituée à partir d'un matériau métallique et est couverte à l'extérieur d'une coque (14) constituée d'un matériau plastique, et en ce que ledit élément de ressort à lame élastique (32) constitue avec ladite coque (14) une seule et même pièce.
EP99120816A 1998-10-23 1999-10-22 Serrure pour porte de véhicule automobile Expired - Lifetime EP0995870B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998TO000903A ITTO980903A1 (it) 1998-10-23 1998-10-23 Serratura per una porta di un autoveicolo.
ITTO980903 1998-10-23

Publications (2)

Publication Number Publication Date
EP0995870A1 EP0995870A1 (fr) 2000-04-26
EP0995870B1 true EP0995870B1 (fr) 2005-04-20

Family

ID=11417132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120816A Expired - Lifetime EP0995870B1 (fr) 1998-10-23 1999-10-22 Serrure pour porte de véhicule automobile

Country Status (7)

Country Link
EP (1) EP0995870B1 (fr)
AT (1) ATE293737T1 (fr)
BR (1) BR9907529A (fr)
DE (1) DE69924802T2 (fr)
ES (1) ES2239823T3 (fr)
IT (1) ITTO980903A1 (fr)
PL (1) PL336181A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0006932D0 (en) 2000-03-23 2000-05-10 Meritor Light Vehicle Sys Ltd Latch mechanism
JP3933898B2 (ja) * 2001-09-21 2007-06-20 三井金属鉱業株式会社 車両用ドアロック装置
ITTO20020512A1 (it) * 2002-06-14 2003-12-15 Intier Automotive Closures Spa Serratura per una porta di un autoveicolo
US7591592B2 (en) * 2002-08-12 2009-09-22 Menza Limited Journal
FR2852622B1 (fr) * 2003-03-19 2008-04-18 Valeo Securite Habitacle Agencement de pene dans une serrure pour portiere de vehicule automobile
DE10320459A1 (de) * 2003-05-08 2004-12-16 Kiekert Ag Kraftfahrzeugtürverschluss
US7780205B2 (en) 2003-05-08 2010-08-24 Kiekert Ag Motor vehicle door lock
GB0321909D0 (en) * 2003-09-19 2003-10-22 Arvinmeritor Light Vehicle Sys Latch bolt
DE102004037983B3 (de) * 2004-08-05 2006-01-12 Huf Hülsbeck & Fürst Gmbh & Co. Kg Vorrichtung zur Betätigung von Schlössern an Türen oder Klappen von Fahrzeugen
JP4513527B2 (ja) * 2004-11-25 2010-07-28 三菱自動車工業株式会社 ドアラッチ装置
DE102005027734A1 (de) 2005-06-16 2006-12-28 Kiekert Ag Kraftfahrzeugtürverschluss
DE102008025604B4 (de) * 2008-05-28 2021-09-16 Bayerische Motoren Werke Aktiengesellschaft Schloss mit einer Aufschlagschutzeinrichtung für eine Frontklappe eines Kraftfahrzeugs insbesondere mit einer Fußgängerschutzeinrichtung
ES2362521B1 (es) * 2009-12-22 2012-05-18 Tubsa Automocion S.L. "dispositivo de cierre para capó".
DE102013017960A1 (de) * 2013-11-30 2015-06-03 Kiekert Aktiengesellschaft Kraftfahrzeugtürverschluss
DE102013114301A1 (de) * 2013-12-18 2015-06-18 Kiekert Aktiengesellschaft Kraftfahrzeugtürschloss
US20150204115A1 (en) * 2014-01-17 2015-07-23 Kurt E. Nurmi Latch housing with strengthening feature

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2320351A1 (de) * 1973-04-21 1974-10-31 Kiekert Soehne Arn Kraftfahrzeug-tuerverschlussgehaeuse
US4854617A (en) * 1986-06-28 1989-08-08 Aisin Seiki Kabushiki Kaisha Door lock for automotive vehicles
DE8715925U1 (fr) * 1987-12-02 1988-02-11 Kiekert Gmbh & Co Kg, 5628 Heiligenhaus, De
CA1326502C (fr) * 1988-03-11 1994-01-25 Wolfgang Thau Loquet , elements composants et methode de fabrication connexe
US5642636A (en) * 1993-01-22 1997-07-01 Mitsui Kinzoku Kogyo Kabushiki Kaisha Locking device for trunk lids
JPH09203257A (ja) * 1996-01-25 1997-08-05 Mitsui Mining & Smelting Co Ltd 車両用ドアロック装置の破損防止装置
US5632517A (en) * 1996-05-21 1997-05-27 General Motors Corporation Vehicle closure latch

Also Published As

Publication number Publication date
DE69924802T2 (de) 2005-09-22
ITTO980903A1 (it) 2000-04-23
DE69924802D1 (de) 2005-05-25
PL336181A1 (en) 2000-04-25
ATE293737T1 (de) 2005-05-15
ES2239823T3 (es) 2005-10-01
EP0995870A1 (fr) 2000-04-26
BR9907529A (pt) 2000-09-05

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