EP0632178B1 - Vehicle door lock - Google Patents

Vehicle door lock Download PDF

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Publication number
EP0632178B1
EP0632178B1 EP94107725A EP94107725A EP0632178B1 EP 0632178 B1 EP0632178 B1 EP 0632178B1 EP 94107725 A EP94107725 A EP 94107725A EP 94107725 A EP94107725 A EP 94107725A EP 0632178 B1 EP0632178 B1 EP 0632178B1
Authority
EP
European Patent Office
Prior art keywords
control lever
lock
internal opening
opening control
safety
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
EP94107725A
Other languages
German (de)
French (fr)
Other versions
EP0632178A1 (en
Inventor
Giacomo Crotti
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11411495&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0632178(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Magna Closures SpA filed Critical Magna Closures SpA
Publication of EP0632178A1 publication Critical patent/EP0632178A1/en
Application granted granted Critical
Publication of EP0632178B1 publication Critical patent/EP0632178B1/en
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
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/36—Locks for passenger or like doors
    • 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
    • E05B77/30—Functions related to actuation of locks from the passenger compartment of the vehicle allowing opening by means of an inner door handle, even if the door is locked

Definitions

  • the present invention relates to a vehicle door lock.
  • Locks comprising a fork and latch closing mechanism; an external opening control lever connected to the outside door handle; a safety control lever for enabling or disabling opening of the door from the outside; and an internal opening control lever connected to the inside door handle.
  • the safety control lever of such locks is normally connected to a safety knob inside the passenger compartment and movable between a depressed or recessed position and a raised or visible position respectively corresponding to engagement and release of the safety mechanism.
  • the safety knob therefore also provides for indicating the state of the lock (safety mechanism engaged or released).
  • the internal opening control lever of known locks normally presents a cam surface cooperating with a corresponding surface on the safety control lever for moving this from the engaged to the released position during a first portion of the travel of the inside handle, and so moving the safety knob from the depressed to the raised position.
  • the internal opening control lever is brought into contact with the latch which, when moved, releases the fork to open the lock.
  • GB-A-2 259 734 discloses a vehicle door latch system in which both the safety control lever and the opening control lever are actuated by the inside handle through a rod linked to such levers by a lost motion mechanism.
  • the complications involved in such known solutions fail to provide for entirely eliminating the above drawbacks.
  • a vehicle door lock comprising a fork and latch closing mechanism; an external opening control lever connected to the outside door handle; a safety control lever movable between a first stable position preventing opening from the outside, and a second stable position enabling opening from the outside; and an internal opening control lever connected to the inside door handle and traveling between a first idle position and a second position wherein it interacts with a pin of said latch to open the lock; characterized in that it comprises articulated connecting means between said safety control lever and said internal opening control lever, for moving said safety control lever between said first and second stable positions when the internal opening control lever is moved from the idle position to a third intermediate position of its travel, and vice versa.
  • number 1 indicates a perfected lock for a vehicle door (not shown).
  • Lock 1 comprises a structure 2 fittable to the vehicle door and supporting a number of movable elements as described below.
  • lock 1 comprises a known fork and latch type closing mechanism 3 cooperating with a striker element 4 on the door post (not shown) when the door is closed.
  • Lock 1 also comprises an external opening control lever 5 connected to the outside door handle; an internal opening control lever 6 connected to the inside door handle 7; and a safety control lever 8.
  • Lever 5 is hinged to structure 2 by a pin (not shown), and is movable between an idle position and an operating position (not shown) wherein it releases the latch of closing mechanism 3.
  • Lever 6 is hinged to structure 2 by a pin 13, and is movable between a first idle position a maintained stably by a known spring 14 associated with lever 6, and a second position b rotated clockwise in relation to position a ( Figure 4) and wherein it interacts, by means of an appendix 25, with a latch pin 15 for releasing the latch.
  • Lever 6 is connected to handle 7 by a rigid rod 16, so that handle 7 is movable between a stable idle position A corresponding to position a of lever 6, and an unstable opening position B corresponding to position b of lever 6.
  • Safety control lever 8 is hinged to structure 2 by a pin 17, and is movable in known manner between a first engaged position (Figure 1) wherein lever 5 is made ineffective by conventional linkages (not described in detail), and a second position ( Figures 3 and 4) rotated clockwise in relation to the first position and enabling lock 1 to be opened externally by means of lever 5.
  • the first and second positions of the lever are defined by striker elements (not shown) fitted to supporting structure 2 and with which lever 8 cooperates, and are made stable by a known bistable spring 24 securing lever 8 to structure 2.
  • lever 6 comprises a first bottom arm 18 secured to rod 16; and a second substantially lateral arm 19 secured to one arm 20 of lever 8 by a connecting rod 21 pivoting on levers 6 and 8 by means of respective end pins 22, 23 ( Figure 2).
  • Pin 22 on lever 6 engages a longitudinal slot 28 formed in connecting rod 21 for the purpose described later on.
  • lock 1 Operation of lock 1 will now be described as of the closed condition, with the safety mechanism engaged, shown in Figure 1 wherein handle 7 and lever 6 are set to respective positions A , a , and lever 8 to said first position.
  • Handle 7 also provides for indicating the state of the lock, by assuming two stable positions A and C corresponding respectively to engagement and release of the safety mechanism.
  • the dotted line portion of Figure 4 shows an alternative embodiment of of lock 1 wherein the traditional safety knob is retained if requested by the vehicle manufacturer.
  • the safety knob, indicated 26, is connected to lever 8, conveniently provided for the purpose with a longer arm 20', by means of a tie 27, and performs the usual function of engaging or releasing the safety mechanism when set to the depressed or raised position corresponding to the first and second position of safety control lever 8.

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  • Lock And Its Accessories (AREA)

Description

The present invention relates to a vehicle door lock.
Locks are known comprising a fork and latch closing mechanism; an external opening control lever connected to the outside door handle; a safety control lever for enabling or disabling opening of the door from the outside; and an internal opening control lever connected to the inside door handle.
The safety control lever of such locks is normally connected to a safety knob inside the passenger compartment and movable between a depressed or recessed position and a raised or visible position respectively corresponding to engagement and release of the safety mechanism. In addition to controlling the safety mechanism, the safety knob therefore also provides for indicating the state of the lock (safety mechanism engaged or released).
The internal opening control lever of known locks normally presents a cam surface cooperating with a corresponding surface on the safety control lever for moving this from the engaged to the released position during a first portion of the travel of the inside handle, and so moving the safety knob from the depressed to the raised position. As the inside handle is moved further into the limit position, the internal opening control lever is brought into contact with the latch which, when moved, releases the fork to open the lock.
Conventional locks therefore present two in-vehicle control elements (handle and knob) with partially overlapping functions, particularly as regards release of the safety mechanism, whereas, for obvious production and assembly cost reasons, all the manual control functions would be better performed by a single element.
To some extent - see European Patent n. 0169644 - the above problem has been solved by connecting both the safety control lever and the internal opening control lever to the inside handle using a single Bowden cable.
GB-A-2 259 734 discloses a vehicle door latch system in which both the safety control lever and the opening control lever are actuated by the inside handle through a rod linked to such levers by a lost motion mechanism.
The complications involved in such known solutions, however, fail to provide for entirely eliminating the above drawbacks.
It is an object of the present invention to provide a straightforward, reliable, low-cost vehicle door lock designed to overcome the above drawbacks, and whereby, in particular, all the in-vehicle manual control functions are performed solely by the inside handle, the position of which indicates the state of the lock.
According to the present invention, there is provided a vehicle door lock comprising a fork and latch closing mechanism; an external opening control lever connected to the outside door handle; a safety control lever movable between a first stable position preventing opening from the outside, and a second stable position enabling opening from the outside; and an internal opening control lever connected to the inside door handle and traveling between a first idle position and a second position wherein it interacts with a pin of said latch to open the lock; characterized in that it comprises articulated connecting means between said safety control lever and said internal opening control lever, for moving said safety control lever between said first and second stable positions when the internal opening control lever is moved from the idle position to a third intermediate position of its travel, and vice versa.
A preferred non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
  • Figure 1 shows a side view of a vehicle door lock in the closed position with the safety mechanism engaged;
  • Figure 2 shows a larger-scale section along line II-II in Figure 1;
  • Figure 3 shows a side view of the Figure 1 lock in the closed position with the safety mechanism released;
  • Figure 4 shows a side view of the Figure 1 lock in the open position.
    • With reference to Figures 1, 2 and 3, number 1 indicates a perfected lock for a vehicle door (not shown).
    Lock 1 comprises a structure 2 fittable to the vehicle door and supporting a number of movable elements as described below.
    More specifically, lock 1 comprises a known fork and latch type closing mechanism 3 cooperating with a striker element 4 on the door post (not shown) when the door is closed.
    Lock 1 also comprises an external opening control lever 5 connected to the outside door handle; an internal opening control lever 6 connected to the inside door handle 7; and a safety control lever 8.
    Lever 5 is hinged to structure 2 by a pin (not shown), and is movable between an idle position and an operating position (not shown) wherein it releases the latch of closing mechanism 3.
    Lever 6 is hinged to structure 2 by a pin 13, and is movable between a first idle position a maintained stably by a known spring 14 associated with lever 6, and a second position b rotated clockwise in relation to position a (Figure 4) and wherein it interacts, by means of an appendix 25, with a latch pin 15 for releasing the latch.
    Lever 6 is connected to handle 7 by a rigid rod 16, so that handle 7 is movable between a stable idle position A corresponding to position a of lever 6, and an unstable opening position B corresponding to position b of lever 6.
    Safety control lever 8 is hinged to structure 2 by a pin 17, and is movable in known manner between a first engaged position (Figure 1) wherein lever 5 is made ineffective by conventional linkages (not described in detail), and a second position (Figures 3 and 4) rotated clockwise in relation to the first position and enabling lock 1 to be opened externally by means of lever 5. The first and second positions of the lever are defined by striker elements (not shown) fitted to supporting structure 2 and with which lever 8 cooperates, and are made stable by a known bistable spring 24 securing lever 8 to structure 2.
    More specifically, lever 6 comprises a first bottom arm 18 secured to rod 16; and a second substantially lateral arm 19 secured to one arm 20 of lever 8 by a connecting rod 21 pivoting on levers 6 and 8 by means of respective end pins 22, 23 (Figure 2). Pin 22 on lever 6 engages a longitudinal slot 28 formed in connecting rod 21 for the purpose described later on.
    Operation of lock 1 will now be described as of the closed condition, with the safety mechanism engaged, shown in Figure 1 wherein handle 7 and lever 6 are set to respective positions A, a, and lever 8 to said first position.
    When handle 7 is operated, in particular rotated towards position B, pull is exerted on rod 16 which, being secured to internal opening control lever 6, rotates lever 6 along a first portion of its travel; which rotation is transmitted by connecting rod 21 to lever 8 so that lever 8 moves into the second position stabilized by spring 24 and wherein the safety mechanism is released. Lever 6 and handle 7 at this point are set to respective intermediate positions c, C of their travel, which configuration is stabilized by spring 24 overcoming the recall action exerted by spring 14 on lever 6.
    Further displacement of inside handle 7 into position B rotates internal opening control lever 6 into position b (Figure 4) wherein appendix 25, contacting pin 15 of the latch, rotates the latch to release the fork and so open lock 1. The above configuration is obviously only achievable by virtue of slot 28 which provides for disconnecting internal opening control lever 6 and safety control lever 8 along the second portion of effective travel; and the above configuration (Figure 4) is obviously unstable by virtue of internal opening control lever 6 being subjected to the recall action of spring 14 which tends to restore the device to the Figure 3 position.
    To re-engage the safety mechanism, the handle is simply restored from position C to position A, in which case also, rotation of lever 6 is transmitted to lever 8 by connecting rod 21.
    The advantages of lock 1 in accordance with the teachings of the present invention are as follows.
    In particular, all in-vehicle control of lock 1 is performed by handle 7, so that the traditional safety knob and the linkages for connection to the lock may be dispensed with. Handle 7 also provides for indicating the state of the lock, by assuming two stable positions A and C corresponding respectively to engagement and release of the safety mechanism.
    Moreover, the lock as described is highly straightforward, reliable and cheap to produce.
    Clearly, changes may be made to lock 1 as described and illustrated herein without, however, departing from the scope of the present invention.
    For example, the dotted line portion of Figure 4 shows an alternative embodiment of of lock 1 wherein the traditional safety knob is retained if requested by the vehicle manufacturer. In this case, the safety knob, indicated 26, is connected to lever 8, conveniently provided for the purpose with a longer arm 20', by means of a tie 27, and performs the usual function of engaging or releasing the safety mechanism when set to the depressed or raised position corresponding to the first and second position of safety control lever 8.

    Claims (6)

    1. A vehicle door lock (1) comprising a fork and latch closing mechanism (3); an external opening control lever (5) connected to the outside door handle; a safety control lever (8) movable between a first stable position preventing opening from the outside, and a second stable position enabling opening from the outside; and an internal opening control lever (6) connected to the inside door handle (7) and traveling between a first idle position (a) and a second position (b) wherein it interacts with a pin (15) of said latch to open the lock (1); characterized in that it comprises articulated connecting means (21) between said safety control lever (8) and said internal opening control lever (6), for moving said safety control lever (8) between said first and second stable positions when the internal opening control lever (6) is moved from the idle position (a) to a third intermediate position (c) of its travel, and vice versa.
    2. A lock (1) as claimed in Claim 1, characterized in that said first and second positions of said safety control lever (8) are maintained stable by a spring (24); said third position (c) of said internal opening control lever (6) being maintained stable by said spring (24) via said articulated connecting means (21).
    3. A lock (1) as claimed in Claim 1 or 2, characterized in that said articulated connecting means (21) comprise a connecting rod connected to respective arms (20, 19) of said safety control lever (8) and said internal opening control lever (6) via hinge means (23, 22).
    4. A lock (1) as claimed in Claim 3, characterized in that said hinge means (23, 22) comprise at least a sliding connection (28) disconnecting said internal opening control lever (6) from said safety control lever (8) during a portion of travel extending between said third (c) and said second (b) position.
    5. A lock (1) as claimed in one of the foregoing Claims from 2 to 4, characterized in that said handle (7) is connected to said internal opening control lever (6) by a rigid rod (16); said handle (7) being movable between an idle position (A) and an opening position (B) corresponding respectively to said first (a) and second (b) positions of said internal opening control lever (6); and said handle (7) presenting a third intermediate stable position (C) corresponding to said third position (c) of said internal opening control lever (6).
    6. A lock (1) as claimed in any one of the foregoing Claims, characterized in that it comprises a safety knob (26) connected to said safety control lever (8) and movable between a depressed position and a raised position respectively corresponding to said first and second positions of said safety control lever (8).
    EP94107725A 1993-05-21 1994-05-18 Vehicle door lock Expired - Lifetime EP0632178B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    ITTO930353 1993-05-21
    ITTO930353A IT1270370B (en) 1993-05-21 1993-05-21 LOCK FOR A DOOR OF A VEHICLE

    Publications (2)

    Publication Number Publication Date
    EP0632178A1 EP0632178A1 (en) 1995-01-04
    EP0632178B1 true EP0632178B1 (en) 1998-04-01

    Family

    ID=11411495

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP94107725A Expired - Lifetime EP0632178B1 (en) 1993-05-21 1994-05-18 Vehicle door lock

    Country Status (4)

    Country Link
    EP (1) EP0632178B1 (en)
    DE (1) DE69409294T2 (en)
    ES (1) ES2117171T3 (en)
    IT (1) IT1270370B (en)

    Families Citing this family (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    IT232602Y1 (en) * 1994-12-23 2000-01-10 Roltra Morse Spa LOCK FOR A VEHICLE DOOR.
    GB2328241B (en) * 1997-05-21 2001-06-13 Rockwell Lvs Door mechanism
    IT1296289B1 (en) * 1997-07-31 1999-06-21 Roltra Morse Spa LOCK FOR A VEHICLE DOOR WITH A MOVING LEVER OPERATION MECHANISM ON PARALLEL PLANS.
    GB2339831B (en) * 1998-07-20 2002-08-14 Meritor Light Vehicle Sys Ltd Door mechanism
    DE10013848B4 (en) * 2000-03-15 2005-09-29 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Locking system for a motor vehicle door
    ITTO20030723A1 (en) * 2003-09-19 2005-03-20 Intier Automotive Closures Spa MECHANICAL DRIVE GROUP OF A LOCK FOR A DOOR OF A MOTOR VEHICLE AND LOCK PROVIDED WITH SUCH
    DE202005015687U1 (en) * 2005-10-05 2007-02-15 BROSE SCHLIEßSYSTEME GMBH & CO. KG Motor vehicle lock
    EP2230369A3 (en) * 2009-03-18 2014-04-23 Magna Closures do Brasil Vehicle door latch permitting simultaneous outside and inside door release lever actuation
    DE102015106124A1 (en) 2014-04-25 2015-10-29 Magna Closures Inc. Door lock with quick release

    Family Cites Families (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2161854A (en) * 1984-07-21 1986-01-22 Ford Motor Co Vehicle door lock system
    GB2259734B (en) * 1991-09-17 1994-04-20 Bocklenberg & Motte Bomoro Vehicle door latch systems

    Also Published As

    Publication number Publication date
    ES2117171T3 (en) 1998-08-01
    DE69409294D1 (en) 1998-05-07
    ITTO930353A1 (en) 1994-11-21
    IT1270370B (en) 1997-05-05
    EP0632178A1 (en) 1995-01-04
    ITTO930353A0 (en) 1993-05-21
    DE69409294T2 (en) 1999-07-22

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