EP1516985A1 - Lock for a door of a motor vehicle - Google Patents

Lock for a door of a motor vehicle Download PDF

Info

Publication number
EP1516985A1
EP1516985A1 EP04104503A EP04104503A EP1516985A1 EP 1516985 A1 EP1516985 A1 EP 1516985A1 EP 04104503 A EP04104503 A EP 04104503A EP 04104503 A EP04104503 A EP 04104503A EP 1516985 A1 EP1516985 A1 EP 1516985A1
Authority
EP
European Patent Office
Prior art keywords
lock
lock striker
door
seat
striker
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.)
Withdrawn
Application number
EP04104503A
Other languages
German (de)
English (en)
French (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 EP1516985A1 publication Critical patent/EP1516985A1/en
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a lock for a door of a motor vehicle.
  • door is used in the present description and in the claims in its broadest sense, to indicate any element movable from an opening position to a closing position of an access opening to an internal compartment of a motor vehicle. Therefore, in addition to the side doors of motor vehicles, the aforesaid term, to which explicit reference will be made in the ensuing description without this entailing any loss of generality, will also include the bonnet or the boot or the hatchback.
  • locks for motor vehicles generally comprise a supporting body designed to be fixed to a door of a motor vehicle, and a closing mechanism carried by the supporting body and designed to couple with a lock striker integral with an upright of said door.
  • a closing mechanism carried by the supporting body and designed to couple with a lock striker integral with an upright of said door.
  • the supporting body is provided with a C-shaped lateral seat, inside which the lock striker is designed to be inserted to be blocked by the closing mechanism.
  • the closing mechanism is constituted essentially by a fork and by a dog hinged to the supporting body around respective axes fixed parallel to each other.
  • the fork has an engagement seat for the lock striker superimposed on the lateral seat of the supporting body, and is elastically loaded towards an opening position, wherein the lock striker can be engaged and disengaged from its seat.
  • the fork is also available in a closing position, wherein it holds the lock striker both inside its seat and inside the lateral seat of the supporting body, preventing disengagement.
  • the dog is thrust by a spring to couple via snap-action, by means of an engagement edge thereof, with a retention shoulder of the fork to block the latter in a releasable way in the closing position.
  • the fork moves, under the thrust of the lock striker, from the opening position to an overtravel position disposed beyond the closing position; during the portion of travel between the closing position and the overtravel position, the fork moves, with its retention shoulder, beyond the dog, to enable the latter to snap, with its engagement edge into a position facing the aforesaid shoulder.
  • the retention shoulder is positioned against the engagement edge of the dog, thus defining the closing position of the fork on the lock striker.
  • the lock and the lock striker may not be perfectly centered for reciprocal coupling.
  • the seat of the supporting body destined to receive the lock striker is delimited laterally, on opposite sides, by a pair of inclined guide walls, which converge towards a bottom wall defining the stop position of said lock striker.
  • the part of the supporting body defining the seat that receives the lock striker is currently produced in materials with a low friction coefficient, which however have relatively high costs.
  • the object of the present invention is to produce a lock for a door of a motor vehicle, which enables the problems related to known locks indicated hereinbefore to be solved in a simple and inexpensive way.
  • a lock for a door of a motor vehicle comprising a closing mechanism designed to couple in a releasable way with a lock striker in a relative coupling direction to define a closing position of said door, and a supporting body of said closing mechanism provided with a seat to receive said lock striker, delimited, on opposite sides of said relative coupling direction, by respective lateral surfaces, and, in a transverse direction to said relative coupling direction, by a bottom surface defining a final stop position of said lock striker, characterized in that at least one of said lateral surfaces is carried by a movable element designed to intercept said lock striker at the entrance of said seat and movable with said lock striker along a set trajectory to accompany it towards said bottom surface.
  • number 1 indicates as a whole a lock for a door of a motor vehicle (not shown).
  • the lock 1 has a seat 2 to receive a cylindrical portion 3 of a lock striker 4 (represented only in part), integral with a fixed upright (not shown) of the door of the motor vehicle, and is designed to block the portion 3 in a releasable way inside the seat 2 to define a closing condition of the aforesaid door.
  • a lock striker 4 represented only in part
  • the lock 1 has a seat 2 to receive a cylindrical portion 3 of a lock striker 4 (represented only in part), integral with a fixed upright (not shown) of the door of the motor vehicle, and is designed to block the portion 3 in a releasable way inside the seat 2 to define a closing condition of the aforesaid door.
  • the lock 1 essentially comprises a supporting body 5 designed to be connected rigidly to the door of the motor vehicle, and a closing mechanism 6 connected to the supporting body 5 and designed to be coupled in a releasable way, in a relative coupling direction A, with the portion 3 of the lock striker 4 to block it inside the seat 2.
  • the supporting body 5 comprises a plate 7 in turn provided with a C-shaped lateral opening 8 designed to enable the portion 3 of the lock striker 4 to enter the lock 1 when closing the door.
  • the opening 8 partly defines, as will be explained in detail hereunder, the seat 2 that receives the lock striker 4 inside the lock 1, and is delimited by a pair of lateral surfaces 9 extending on opposite sides of the direction A, and by a bottom surface 10 transverse to the direction A and defining a final stop position of the lock striker 4.
  • the bottom surface 10 has a concave arc of circumference structure, while the lateral surfaces 9 have a curvilinear structure in the zone of connection to the bottom surface 10 and draw closer to each other at the opposite end to become rectilinear and parallel.
  • the opening 8 has an open circular structure with a larger diameter with respect to that of the portion 3 of the lock striker 4.
  • the closing mechanism 6 essentially comprises a fork 11 and a dog 12 hinged around respective pins 13, 14 fixed integral with the plate 7 and with respective axes B, C parallel to each other and orthogonal to said plate 3 and to the direction A.
  • the fork 11 is constituted by a shaped metal plate extending parallel to the plate 7 and with an intermediate portion hinged to said plate 7 by the pin 13.
  • the fork 11 is provided with a peripheral C-shaped seat 16, superimposed on the opening 8 of the plate 7, designed to receive the portion 3 of the lock striker 4 and delimited laterally by a pair of teeth 17, 18.
  • the fork 11 is coated externally by a shell made of plastic material, from which the free ends of the teeth 17 and 18 delimiting the seat 16 project.
  • the fork 11 is thrust in a known way, by a spring (not shown) wound around the pin 13 and connected to said fork 11 and to the plate 7, towards an opening position (figure 1), wherein the seat 16 is facing the same part as the opening 8 of the plate 7 and therefore enables engagement and disengagement of the portion 3 of the lock striker 4; the fork 11 is also disengaged in a closing position (figure 4), wherein the portion 3 of the lock striker 4 is blocked inside the seat 16 and the tooth 17 intercepts the opening 8 to prevent its disengagement.
  • the dog 12 is composed of a shaped plate designed to couple via snap-action with the fork 11 to block it in a releasable way in the closing position.
  • the dog 12 extends on the same lying plane as the fork 11, is hinged to the pin 14 at the level of one of its ends and is designed to engage via snap-action, by means of an opposite L-shaped end edge 20 thereof, with the free end of the tooth 18 of the fork 11.
  • the dog 12 is thrust in a known way towards the fork 11 by a helical spring (not shown) wound around the pin 14 and connected to said dog 12 and to the plate 7.
  • the fork 11 is designed to move, under the thrust of the portion 3 of the lock striker 4, from the opening position to an overtravel position (not shown) disposed beyond the closing position; during the portion of travel between the closing position and the overtravel position, the fork 11 moves, with its tooth 18, beyond the dog 12, to enable the latter to snap, with its end edge 20, into a position facing the free end of said tooth 18.
  • the free end of the tooth 18 is positioned against the end edge 20 of the dog 12, thus defining the closing position of said fork 11 on the lock striker 4.
  • the lock 1 also comprises a pair of movable elements 21 disposed symmetrically on opposite sides of the direction A to intercept the lock striker 4 in the phase in which it enters the supporting body 5, hinged to the plate 7 by means of respective pins 22 with axes D, E parallel to the axes B, C, and which can be moved separately from each other by means of the lock striker 4 to accompany it towards the bottom surface 10.
  • the movable elements 21 are designed to cooperate with the portion 3 of the lock striker 4 by means of respective interception surfaces 23 projecting in the direction A with respect to the relative lateral surfaces 9 of the opening 8.
  • the interception surfaces 23 of the movable elements 21 and the bottom surface 10 of the opening 8 thus delimit, as a whole, the seat 2 to receive the portion 3 of the lock striker 4 inside the supporting body 5.
  • the movable elements 21 have a symmetrical structure with respect to the direction A and are loaded by respective helical springs 24 towards the zone in which the lock striker 4 enters the seat 2.
  • each movable element 21 essentially has a triangular structure, is hinged to the plate 7 at the level of one of its vertices and defines, with the curvilinear opposite side, the relative interception surface 23.
  • the interception surfaces 23 are arc of circumference in shape with facing convexities.
  • Each spring 24 is wound around the relative pin 22 and has opposite end portions connected respectively to the plate 7 and to the relative movable element 21 so as to thrust it in the opposite direction to the one in which the lock striker 4 enters the supporting body 5 and against a fixed stop (not shown) defined by said plate 7.
  • the portion 3 of the lock striker 4 adheres to the interception surface 23 of the aforesaid movable element 21, which, through being hinged to the pin 22 is constrained to move along a set arc of circumference trajectory and thus accompanies the portion 3 towards the bottom surface 10 of the seat 2 without causing scraping or friction.
  • the other movable element 21 does not move and comes into contact with the portion 3 of the lock striker 4 exclusively at the end of the coupling travel of said lock striker 4 with the fork 11.
  • the fork 11 During rotation around the axis B, caused by thrust of the lock striker 4, the fork 11 initially slides with its peripheral edge on the end edge 20 of the dog 12; as soon as the tooth 18 moves beyond the end edge 20, the dog 12, under the thrust of its spring, snaps further towards the fork 11, which completes its travel and returns, through the effect of the elastic return force to which it is subject, towards the opening position. During this movement, the free end of the tooth 18 is intercepted by the end edge 20 of the dog 12, thus blocking the fork 11 in the closing position.
  • the lock striker 4 when closing the door, the lock striker 4, not perfectly centered with respect to the seat 2 of the lock 1, is accompanied by the movable elements 21 towards the final stop position against the bottom surface 10 without scraping or friction and, therefore, without creating any unwanted noise or braking action on said lock striker 4.
  • the lock 1 could be fixed to the upright of the door and could cooperate with a lock striker integral with the door.
  • the lock 1 could have only one movable element facing a fixed guide wall of the lock striker 4.

Landscapes

  • Lock And Its Accessories (AREA)
EP04104503A 2003-09-19 2004-09-17 Lock for a door of a motor vehicle Withdrawn EP1516985A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20030722 ITTO20030722A1 (it) 2003-09-19 2003-09-19 Serratura per una porta di un autoveicolo
ITTO20030722 2003-09-19

Publications (1)

Publication Number Publication Date
EP1516985A1 true EP1516985A1 (en) 2005-03-23

Family

ID=34179356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04104503A Withdrawn EP1516985A1 (en) 2003-09-19 2004-09-17 Lock for a door of a motor vehicle

Country Status (3)

Country Link
EP (1) EP1516985A1 (it)
BR (1) BRPI0404294A (it)
IT (1) ITTO20030722A1 (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009021613A1 (de) * 2009-05-15 2010-11-18 Huf Hülsbeck & Fürst Gmbh & Co. Kg Schloss zum Verschließen einer Klappe eines Kraftfahrzeugs mit einer Dämpfungseinrichtung
US8029030B2 (en) 2006-08-31 2011-10-04 Mitsui Kinzoku Act Corporation Lock device for use in motor vehicle
EP3792434A1 (de) * 2019-09-16 2021-03-17 Huf Hülsbeck & Fürst GmbH & Co. KG Schlossanordnung eines kraftfahrzeugs

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR68760E (fr) * 1955-03-14 1958-06-10 Dubois & Cie Serrure pour portes de véhicules
US3367699A (en) * 1966-09-14 1968-02-06 Gen Motors Corp Closure latch
DE1801154A1 (de) * 1968-10-04 1970-04-23 Saseb S A Entriegelbares Schnappschloss,insbesondere fuer den Deckel des Motor- und Gepaeckraums an Kraftfahrzeugen
DE2259603A1 (de) * 1972-12-06 1974-06-12 Ymos Metallwerke Wolf & Becker Tuerschloss
GB2172930A (en) * 1985-03-26 1986-10-01 Bloxvich Lock Stamping Releasable fastening mechanism for tilting cabs on vehicles
DE8806550U1 (de) 1988-05-19 1988-07-14 Bomoro Bocklenberg & Motte Gmbh & Co Kg, 5600 Wuppertal Kraftfahrzeug-Türschloß
US4869536A (en) * 1987-07-29 1989-09-26 Kiekert Gmbh & Co. Kommanditgesellschaft Vehicle door latch with secondary fork
US5727825A (en) * 1993-10-13 1998-03-17 Rockwell Light Vehicle Systems (Uk) Ltd. Latch assembly
JP2002322847A (ja) * 2001-04-26 2002-11-08 Shiroki Corp 車両用上下開閉ドアのロック装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR68760E (fr) * 1955-03-14 1958-06-10 Dubois & Cie Serrure pour portes de véhicules
US3367699A (en) * 1966-09-14 1968-02-06 Gen Motors Corp Closure latch
DE1801154A1 (de) * 1968-10-04 1970-04-23 Saseb S A Entriegelbares Schnappschloss,insbesondere fuer den Deckel des Motor- und Gepaeckraums an Kraftfahrzeugen
DE2259603A1 (de) * 1972-12-06 1974-06-12 Ymos Metallwerke Wolf & Becker Tuerschloss
GB2172930A (en) * 1985-03-26 1986-10-01 Bloxvich Lock Stamping Releasable fastening mechanism for tilting cabs on vehicles
US4869536A (en) * 1987-07-29 1989-09-26 Kiekert Gmbh & Co. Kommanditgesellschaft Vehicle door latch with secondary fork
DE8806550U1 (de) 1988-05-19 1988-07-14 Bomoro Bocklenberg & Motte Gmbh & Co Kg, 5600 Wuppertal Kraftfahrzeug-Türschloß
US5727825A (en) * 1993-10-13 1998-03-17 Rockwell Light Vehicle Systems (Uk) Ltd. Latch assembly
JP2002322847A (ja) * 2001-04-26 2002-11-08 Shiroki Corp 車両用上下開閉ドアのロック装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 03 5 May 2003 (2003-05-05) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8029030B2 (en) 2006-08-31 2011-10-04 Mitsui Kinzoku Act Corporation Lock device for use in motor vehicle
DE102007017255B4 (de) 2006-08-31 2018-08-02 Mitsui Kinzoku Act Corp. Arretierungsvorrichtung zum Einsatz bei Kraftfahrzeugen
DE102009021613A1 (de) * 2009-05-15 2010-11-18 Huf Hülsbeck & Fürst Gmbh & Co. Kg Schloss zum Verschließen einer Klappe eines Kraftfahrzeugs mit einer Dämpfungseinrichtung
EP2251509A3 (de) * 2009-05-15 2013-04-03 Huf Hülsbeck & Fürst GmbH & Co. KG Schloss zum Verschließen einer Klappe eines Kraftfahrzeugs mit einer Dämpfungseinrichtung
EP3792434A1 (de) * 2019-09-16 2021-03-17 Huf Hülsbeck & Fürst GmbH & Co. KG Schlossanordnung eines kraftfahrzeugs

Also Published As

Publication number Publication date
ITTO20030722A1 (it) 2005-03-20
BRPI0404294A (pt) 2005-05-24

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