EP1512815A1 - Schloss für eine Kraftfahrzeugtür - Google Patents

Schloss für eine Kraftfahrzeugtür Download PDF

Info

Publication number
EP1512815A1
EP1512815A1 EP04104196A EP04104196A EP1512815A1 EP 1512815 A1 EP1512815 A1 EP 1512815A1 EP 04104196 A EP04104196 A EP 04104196A EP 04104196 A EP04104196 A EP 04104196A EP 1512815 A1 EP1512815 A1 EP 1512815A1
Authority
EP
European Patent Office
Prior art keywords
fork
lock
dog
lever
disengagement
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.)
Granted
Application number
EP04104196A
Other languages
English (en)
French (fr)
Other versions
EP1512815B1 (de
Inventor
Corrado Taviani
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 EP1512815A1 publication Critical patent/EP1512815A1/de
Application granted granted Critical
Publication of EP1512815B1 publication Critical patent/EP1512815B1/de
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
    • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • 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
    • E05B77/22—Functions related to actuation of locks from the passenger compartment of the vehicle
    • E05B77/24—Functions related to actuation of locks from the passenger compartment of the vehicle preventing use of an inner door handle, sill button, lock knob or the like
    • 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
    • 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 door of a motor vehicle.
  • locks for motor vehicles generally comprise a supporting body designed to be fixed to a door of the motor vehicle, and a closing mechanism carried by the supporting body and designed to couple with a lock striker integral with an upright of the frame of said door.
  • a closing mechanism carried by the supporting body and designed to couple with a lock striker integral with an upright of the frame of said door.
  • the closing mechanism is composed essentially of a fork and of a dog hinged to the supporting body around respective fixed axes parallel with each other.
  • the fork has an engagement seat for a generally cylindrical portion of the aforesaid lock striker, is elastically loaded towards an opening position, wherein the lock striker can be engaged and disengaged from its seat, and is disengaged in a closing position, wherein it holds the cylindrical portion of the lock striker inside its seat and prevents disengagement.
  • the dog is thrust by a spring to couple via snap-action, by means of an engagement edge thereof, with a peripheral 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 dog As when motor vehicles are being driven they are normally subjected to vibrations and impacts that can be transmitted to the relative locks, the dog must ensure a certain retention load on the fork, to prevent inopportune opening of the doors. This is obtained by suitably sizing and shaping the fork and dog in the zone of interaction.
  • the object of the present invention is to produce a lock for a door of a motor vehicle, which enables, simply and inexpensively, high retention loads to be obtained on the fork in the closing position and, simultaneously, decreased loads during the phase to open the door.
  • a lock for a door of a motor vehicle comprising a closing mechanism designed to couple in a releasable way with a lock striker, said closing mechanism comprising:
  • number 1 indicates as a whole a lock for a door of a motor vehicle (not shown).
  • the lock 1 essentially comprises a supporting body 2 with a box-type structure, of which, for clarity, only a plate 3 is shown, partially and with a dashed line, designed to be fixed to the aforesaid door, and a closing mechanism 4 fastened to the supporting body 2 and designed to cooperate with a cylindrical portion 5 of a lock striker 6 represented only in part, integral with a fixed upright (not shown) of the door.
  • the plate 3 defines a C-shaped lateral opening 7 designed to receive the portion 5 of the lock striker 6 during the phase to close the door.
  • the closing mechanism 4 essentially comprises a fork 8 and a dog 9 hinged around respective pins 10, 11 fixed integral with the plate 3 and with respective axes A, B parallel with each other and orthogonal to the plate 3.
  • the fork 8 is constituted by a shaped plate produced in metallic material, and hinged at the level of an intermediate portion 12 around the pin 10 and has a peripheral C-shaped seat 13 designed to receive the portion 5 of the lock striker 6 and delimited laterally by a pair of teeth 14, 15.
  • the fork 8 is coated externally by a shell made of plastic material, from which the free ends of the teeth 14 and 15 delimiting the seat 13 project.
  • the fork 8 is thrust in a known way by a spring (not shown) wound around the pin 10 and connected to the fork 8 and to the plate 3, towards an opening position (figure 1), wherein the seat 13 is facing the same part as the opening 7 of the plate 3 and therefore enables engagement and disengagement of the portion 5 of the lock striker 6.
  • the fork 8 rotates about the axis A to close or couple via snap-action with the dog 9 to assume, as will be explained in detail hereunder, two different closing positions, respectively the first and second snap-action coupling closing positions (figures 2 and 3), wherein the portion 5 of the lock striker 6 is blocked inside the seat 13 and the tooth 15 prevents escape by increasingly intercepting the opening 7.
  • first and second snap-action coupling closing positions are defined by the dog 9 coupling with respective shoulders 16, 17 produced along the peripheral edge of the fork 8 on the opposite side of the teeth 14 and 15.
  • the dog 9 is composed of a shaped plate with an elongated structure extending essentially on the same lying plane as the fork 8, is hinged to the pin 11 at the level of one of its ends 20 and is designed to couple in a releasable way, by means of a lateral boss 21 with an L-shaped edge, with the shoulders 16, 17 of the fork 8.
  • the dog 9 is thrust in a known way towards the fork 8 by a helical spring (not shown) wound around the pin 11 and connected to the dog 9 and to the plate 3.
  • the dog 9 When there is no contact with the fork 8 or interaction with other elements of the lock 1 (as will be explained in greater detail hereunder), the dog 9 is thrust by its spring, with a free end 22 opposite the end 20, against a stop 23 orthogonally projecting in cantilever fashion from the plate 3.
  • the dog 9 is provided with a thrust boss 24 (the function of which will be explained hereunder) orthogonally extending in cantilever fashion from an intermediate portion of the dog 9. More precisely, the boss 24 is disposed on the opposite side to the boss 21 with respect to the end 20 hinged to the plate 3.
  • the dog 9 is selectively movable against the action of its spring to disengage the fork 8 and free the lock striker 6, enabling the door to open.
  • This movement may be obtained by lever mechanisms of known types (not shown), connected to the inner and outer handles (again not shown) associated with the door.
  • the lock 1 also comprises a supplementary retention lever 25 that can be activated selectively to block the fork 8 in a completely closed position (figure 5), wherein the fork 8 is disposed downstream the first and second snap-action coupling closing positions with reference to the direction of movement from the opening position and is detached from the dog 9, which is held by the stop 23.
  • the lever 25 has an elongated structure and extends on a lying plane parallel to the plane of the fork 8 and of the dog 9 so that it intersects the dog 9 transversely between the boss 24 and the end 22.
  • the lever 25 is hinged, at the level of one of its ends 26, to the plate 3 by means of a pin 27 with an axis C parallel to the axes A and B and fixed to the plate 3 in an axially fixed position and in an angularly revolving way.
  • the lever 25 has a structure tapered towards one of its ends 28 opposite the end 26 and carries, projecting in cantilever fashion, at the level of the end 28, a rolling roller 29 designed to couple with a notch 30 of the fork 8 to define the completely closed position (figure 5).
  • the roller 29 is preferably produced in vibration-damping plastic or chromed aluminum and enables the friction loads between the lever 25 and the fork 8 to be reduced to a minimum.
  • the lever 25 is loaded, analogously to the dog 9, towards the peripheral edge of the fork 8 by a helical spring of known type (not shown), wound around the pin 27.
  • the lever 24 rests, with its roller 29, on the peripheral edge of the fork 8 on the side of the tooth 15 and comes into contact with the boss 24 laterally to hold the dog 9 in a position detached both from the fork and from the stop 23.
  • the notch 30 has an essentially flattened V-shaped profile and is produced along the peripheral edge of the fork 8 on the opposite side of the shoulder 16 with respect to the shoulder 17.
  • the notch 30 is disposed on the fork 8 in a position so that it can be engaged by the roller 29 of the dog 9 at the end of the closing travel of the fork 8 under the thrust of the lock striker 6.
  • Blocking of the lever 25 in the condition of coupling with the fork 8 and, consequently, movement and blocking of the fork 8 in the completely closed position are obtained by loading the lever 25 towards the bottom of the notch 30 performed by an electrically operated rotary type actuator 35 (per se known and shown to the extent required to understand the present invention), for example a geared motor, with a cylindrical output element 36 coupled angularly to the pin 27 in an eccentric position.
  • an electrically operated rotary type actuator 35 per se known and shown to the extent required to understand the present invention
  • activation of the actuator 35 is designed to determine a movement of the lever 25 towards the fork 8 to make it rotate beyond its end of travel position in the closing direction on the lock striker 6, detaching the shoulder 17 of the fork 8 from the boss 21 of the dog 9.
  • Disengagement of the lever 25 from the fork 8 can be obtained by an action of lateral thrust performed by the boss 24 during rotation of the dog 9 away from the stop 23.
  • the lever 25 extends obliquely with respect to the direction of movement of the boss 24 consequent to a rotation of the dog 9 against the action of its spring.
  • Activation/deactivation of the actuator 35 is controlled by a pair of microswitches 37, 38 associated respectively with the lever 25 and with the dog 9.
  • microswitch 37 is disposed on the opposite side of the lever 25 with respect to the fork 8 and is designed to interact, by means of a mechanical actuation element 39, with a tab 40 projecting radially from the end 26 of said lever 25.
  • microswitch 37 is held closed by the tab 40 in the condition of disengagement between the lever 25 and the fork 8 and opens through the effect of movement of the lever 25 in the coupling position with the fork 8, commanding activation of the actuator 35.
  • the microswitch 38 is disposed in proximity to the end 20 of the dog 9 on the opposite side to the one facing the fork 8 and is designed to interact, by means of a mechanical actuation element 41, with a tab 42 projecting radially from said end 20.
  • the microswitch 38 is opened in the positions of the dog 9 corresponding to the completely closed position and the first and second snap-action coupling positions of the fork 8, and is closed by the tab 42 through the effect of movement of the dog 9 in the position in which it determines initial disengagement of the lever 25 from the fork 8, commanding deactivation of the actuator 35.
  • Rotation of the fork 8 determines sliding of its peripheral edge on the roller 29 of the lever 25, moving the roller 29 and the notch 30 closer to each other.
  • the lever 25 couples via snap-action with the fork 8 with its roller 29 engaged in the notch 30.
  • the tab 40 moves away from the mechanical actuation element 39, opening the microswitch 37 and determining activation of the actuator 35 (figure 4).
  • the fork 8 is completely detached from the dog 9, which is in turn resting against the stop 23, and its shoulder 17 is facing the boss 21.
  • the dog 9 defines a safety stop for the fork 8 in the event of accidental disengagement of the lever 25.
  • the lock 1 (figure 6) is opened from outside or from inside the motor vehicle by activating, using the handles associated with the door, the dog 9 in order to rotate it in a clockwise direction around the axis B against the action of its spring. Through the effect of this rotation, the boss 24 is brought into contact with the lever 25 laterally and determines clockwise rotation around the axis C to disengage it from the notch 30.
  • the tab 42 closes the microswitch 38, determining deactivation of the actuator 35 and enabling the lock 1 to be returned to the opening condition.
  • the solution described herein enables, by means of the lever 25, a high retention load to be obtained on the fork 8 in the completely closed position, with consequent unloading of the dog 9; the lock 1 may therefore be opened by acting on the dog 9 with a reduced load of manoeuvre.
  • the dog 9 therefore essentially assumes a safety function against any accidental disengagement of the fork 8 by the lever 25, for example due to vibrations or impacts that might occur while the motor vehicle is being driven.
  • the lock 1 could be fixed to the upright of the door and could cooperate with a lock striker integral with the door.

Landscapes

  • Lock And Its Accessories (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
EP20040104196 2003-09-02 2004-09-01 Schloss für eine Kraftfahrzeugtür Expired - Lifetime EP1512815B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20030670 ITTO20030670A1 (it) 2003-09-02 2003-09-02 Serratura per una porta di un autoveicolo.
ITTO20030670 2003-09-02

Publications (2)

Publication Number Publication Date
EP1512815A1 true EP1512815A1 (de) 2005-03-09
EP1512815B1 EP1512815B1 (de) 2007-08-22

Family

ID=34131248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040104196 Expired - Lifetime EP1512815B1 (de) 2003-09-02 2004-09-01 Schloss für eine Kraftfahrzeugtür

Country Status (4)

Country Link
EP (1) EP1512815B1 (de)
BR (1) BRPI0403842B1 (de)
DE (1) DE602004008384T2 (de)
IT (1) ITTO20030670A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1724423A3 (de) * 2005-03-16 2009-03-04 Brose Schliesssysteme GmbH & Co. KG Kraftfahrzeugschloß und Haltevorrichtung für eine Fahrzeugsicherheitseinrichtung
WO2010012272A3 (de) * 2008-07-31 2010-05-20 Kiekert Aktiengesellschaft Schlosseinheit mit zwei sperrklinken und positionserkennungsmitteln
WO2019016589A1 (en) * 2017-07-21 2019-01-24 Kiekert Ag PRIMARY AND SECONDARY RATTER MOTOR VEHICLE DOOR LATCH
US11332964B2 (en) * 2017-04-05 2022-05-17 Strattec Security Corporation Latch assembly
US20230078285A1 (en) * 2018-02-08 2023-03-16 Magna Closures Inc. Closure latch assembly with latch mechanism having roller pawl assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010051228B4 (de) * 2010-11-12 2025-10-02 Kiekert Aktiengesellschaft Kraftfahrzeugtürverschluss
US10745947B2 (en) 2015-08-21 2020-08-18 Magna Closures Inc. Automotive latch including bearing to facilitate release effort

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905627A (en) * 1973-01-25 1975-09-16 Aisin Seiki Door lock mechanism
DE3414475C1 (de) * 1984-04-17 1985-12-19 Kiekert GmbH & Co KG, 5628 Heiligenhaus Kraftfahrzeugtürverschluß
US5516164A (en) * 1993-07-30 1996-05-14 Ohi Seisakusho Co., Ltd. Door lock device for a motor vehicle
GB2334297A (en) * 1998-02-11 1999-08-18 Rover Group Vehicle door lock with controlled pawl locking mechanism
US6003910A (en) * 1997-09-19 1999-12-21 Valeo Securite Habitacle Electric lock for vehicle door
EP0978609A1 (de) * 1998-08-05 2000-02-09 Valeo Securite Habitacle Türschloss mit elektrischem Hilfsmotor
US6386599B1 (en) * 1999-08-12 2002-05-14 John Phillip Chevalier Latch arrangement for automotive door
US6471259B1 (en) * 1999-04-29 2002-10-29 Robert Bosch Gmbh Electrically operated lock for doors of motor vehicles or the like

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905627A (en) * 1973-01-25 1975-09-16 Aisin Seiki Door lock mechanism
DE3414475C1 (de) * 1984-04-17 1985-12-19 Kiekert GmbH & Co KG, 5628 Heiligenhaus Kraftfahrzeugtürverschluß
US5516164A (en) * 1993-07-30 1996-05-14 Ohi Seisakusho Co., Ltd. Door lock device for a motor vehicle
US6003910A (en) * 1997-09-19 1999-12-21 Valeo Securite Habitacle Electric lock for vehicle door
GB2334297A (en) * 1998-02-11 1999-08-18 Rover Group Vehicle door lock with controlled pawl locking mechanism
EP0978609A1 (de) * 1998-08-05 2000-02-09 Valeo Securite Habitacle Türschloss mit elektrischem Hilfsmotor
US6471259B1 (en) * 1999-04-29 2002-10-29 Robert Bosch Gmbh Electrically operated lock for doors of motor vehicles or the like
US6386599B1 (en) * 1999-08-12 2002-05-14 John Phillip Chevalier Latch arrangement for automotive door

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1724423A3 (de) * 2005-03-16 2009-03-04 Brose Schliesssysteme GmbH & Co. KG Kraftfahrzeugschloß und Haltevorrichtung für eine Fahrzeugsicherheitseinrichtung
WO2010012272A3 (de) * 2008-07-31 2010-05-20 Kiekert Aktiengesellschaft Schlosseinheit mit zwei sperrklinken und positionserkennungsmitteln
CN102084074A (zh) * 2008-07-31 2011-06-01 开开特股份公司 具有两个掣子的锁定单元和位置检测装置
JP2011529535A (ja) * 2008-07-31 2011-12-08 キーケルト アクツィーエンゲゼルシャフト ２つの爪部と位置検出手段とを有するロックユニット
US8919828B2 (en) 2008-07-31 2014-12-30 Kiekert Ag Lock unit comprising two pawls and position detection means
US11332964B2 (en) * 2017-04-05 2022-05-17 Strattec Security Corporation Latch assembly
WO2019016589A1 (en) * 2017-07-21 2019-01-24 Kiekert Ag PRIMARY AND SECONDARY RATTER MOTOR VEHICLE DOOR LATCH
US10808437B2 (en) 2017-07-21 2020-10-20 Kiekert Ag Motor vehicle door latch with primary and secondary pawl
US20230078285A1 (en) * 2018-02-08 2023-03-16 Magna Closures Inc. Closure latch assembly with latch mechanism having roller pawl assembly
US12024930B2 (en) * 2018-02-08 2024-07-02 Magna Closures Inc. Closure latch assembly with latch mechanism having roller pawl assembly

Also Published As

Publication number Publication date
EP1512815B1 (de) 2007-08-22
DE602004008384T2 (de) 2008-05-15
BRPI0403842B1 (pt) 2015-05-19
BRPI0403842A (pt) 2005-04-26
DE602004008384D1 (de) 2007-10-04
ITTO20030670A1 (it) 2005-03-03

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