EP1069269A1 - Verriegelungseinrichtung - Google Patents

Verriegelungseinrichtung Download PDF

Info

Publication number
EP1069269A1
EP1069269A1 EP00306055A EP00306055A EP1069269A1 EP 1069269 A1 EP1069269 A1 EP 1069269A1 EP 00306055 A EP00306055 A EP 00306055A EP 00306055 A EP00306055 A EP 00306055A EP 1069269 A1 EP1069269 A1 EP 1069269A1
Authority
EP
European Patent Office
Prior art keywords
striker
latch mechanism
pawl
latch
limiting member
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
EP00306055A
Other languages
English (en)
French (fr)
Other versions
EP1069269B1 (de
Inventor
Sidney Edward Fisher
Nigel Victor Spurr
Timothy Bland
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.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Meritor Light Vehicle Systems UK Ltd
Meritor Light Vehicle Systems Inc
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 Meritor Light Vehicle Systems UK Ltd, Meritor Light Vehicle Systems Inc filed Critical Meritor Light Vehicle Systems UK Ltd
Publication of EP1069269A1 publication Critical patent/EP1069269A1/de
Application granted granted Critical
Publication of EP1069269B1 publication Critical patent/EP1069269B1/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
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/10—Allowing opening in case of deformed bodywork, e.g. by preventing deformation of lock parts

Definitions

  • the present invention relates to latch assemblies and in particular to latch assemblies for releasably securing vehicle doors when such doors are in a closed position.
  • a typical vehicle door latch mechanism essentially comprises a rotatable claw mounted on the vehicle door which co-operates with a striker pin mounted on the vehicle body.
  • the action of closing the door causes the claw to rotate to a closed position whereupon it engages and retains the striker pin.
  • the claw is maintained in the closed position by a sprung pawl which abuts an appropriately shaped portion of the claw.
  • forces experienced by the latch mechanism can lead to relative movement between the claw and pawl, with the result that the two become misaligned and the pawl no longer maintains the claw in the closed position.
  • the present invention seeks to provide a latch mechanism which is less likely to unlatch during an accident.
  • a latch mechanism having a latch bolt for releasably securing a striker in a closed position, the latch bolt being movably mounted on a chassis of the latch mechanism, and a pawl movably mounted on the chassis and engageable with the latch bolt to releasably secure it in a closed position, the latch mechanism further including a limiting member mounted in the chassis, the limiting member being positioned adjacent the pawl and latch bolt so as to limit relative movement therebetween by co-operation with an engagement portion of the striker when the striker is secured in the closed position following the application of an abnormal load to the latch mechanism.
  • the limiting member is configured so as to substantially surround a portion of the striker when the striker is secured in the closed position.
  • the limiting member may be substantially planar and provided with a mouth adapted to receive said portion of the striker.
  • the mechanism 10 includes a pawl 12, a latch bolt in the form of a claw 14, and a retention plate 16.
  • the pawl 12 is pivotally mounted via a pawl pivot 20 which is connected to the retention plate 16.
  • the pawl pivot 20 is defined by a pin extending from the retention plate 16.
  • the pawl 12 includes a pawl engagement portion 22.
  • the retention plate 16 in conjunction with further components of the latch mechanism 10 (not shown) which do not move relative to the retention plate 16 during use, form a chassis of the latch mechanism.
  • the claw 14 is pivotally mounted on a claw pivot 24 which is secured to the retention plate 16. in the embodiment shown the claw pivot 24 is defined by a pin extending from the retention plate 16
  • the claw 14 includes a claw jaw 26 and a claw closed engagement portion 28 and a claw first safety engagement portion 30.
  • the retention plate 16 includes a mouth 32.
  • the claw jaw 26 releasably secures a striker 34 in the mouth 32 of the retention plate 16.
  • the claw 14 can be secured in its closed position, as shown in figure 1, by the pawl 12, and in particular by abutment of the pawl engagement portion 22 with the claw closed engagement portion 28.
  • the striker 34 comprises a pin 36 having at opposite ends thereof a base 38 and an end flange 40. In use, the base 38 of the striker 34 is secured at a location of a vehicle body.
  • Known release means allow the pawl 12 to be rotated anticlockwise when viewing figure 1 to disengage the pawl engagement portion 22 from the claw closed engagement portion 28, to allow the claw 14 to rotate in an anticlockwise direction and thus release the striker 34 form the mouth 32.
  • the pawl 12 and claw 14 are substantially planar having respective first planar sides 12A and 14A, and second planar sides 12B and 14B.
  • the retention plate 16 is positioned on the respective first sides 12A, 14A of the pawl 12 and claw 14.
  • the pawl 12 and claw 14 are pivotable about respective pivot axes 12C and 14C which, in the embodiment shown, are substantially parallel.
  • the retention plate 16 Under abnormal conditions, such as when the latch mechanism is secured in a door of a vehicle and the door receives a side impact during a road traffic accident, the retention plate 16 can be distorted with the result that the alignment pivot axes 12C and 14C changes. This can lead to the pawl engagement portion becoming misaligned with the claw closed engagement portion 28, and thereby allowing the door to open.
  • the latch mechanism 10 is provided with a substantially planar striker engagement plate 42 within the chassis of the latch mechanism.
  • the striker engagement plate 42 is positioned in the chassis such that it lies on the respective second sides 12B,14B of the pawl 12 and claw 14.
  • striker engagement plate 42 is arranged substantially parallel to the retention plate 16 and may be carried by the pins defining the pawl and claw pivots 20,24.
  • the claw jaw 26 releasably secures the striker 34 both in the mouth 32 of the retention plate 16 and a corresponding mouth 44 of the striker engagement plate 42.
  • the striker engagement plate 42 is positioned between the claw 12 and pawl 14 and the end flange of the 40 of the striker 34. Under the abnormal conditions described above, the striker engagement plate 42 acts to resist misalignment of the pawl 12 and claw 14.
  • Movement of the claw 12 and/or pawl 14 can result in each or either of them moving into contact with the retention plate 16 and/or the striker engagement plate 42, with the plates 16,42 then acting to constrain further movement of the claw 12 and/or pawl 14.
  • the proximity of the striker engagement plate 42 to the striker end flange 40 means that any distortion or flexing of the striker engagement plate 42 causes it to abut the end flange 40. Further distortion or flexing of the striker engagement plate 42 is resisted by the end flange 40.

Landscapes

  • Lock And Its Accessories (AREA)
EP20000306055 1999-07-16 2000-07-17 Verriegelungseinrichtung Expired - Lifetime EP1069269B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9916632.4A GB9916632D0 (en) 1999-07-16 1999-07-16 Latch mechanism
GB9916632 1999-07-16

Publications (2)

Publication Number Publication Date
EP1069269A1 true EP1069269A1 (de) 2001-01-17
EP1069269B1 EP1069269B1 (de) 2005-03-02

Family

ID=10857306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000306055 Expired - Lifetime EP1069269B1 (de) 1999-07-16 2000-07-17 Verriegelungseinrichtung

Country Status (3)

Country Link
EP (1) EP1069269B1 (de)
DE (1) DE60018332T2 (de)
GB (1) GB9916632D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006031226A1 (de) * 2006-07-06 2008-01-17 Audi Ag Schloss für eine Fahrzeugtür
CN102345420A (zh) * 2010-08-03 2012-02-08 通用汽车环球科技运作有限责任公司 闩锁系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561538A (en) * 1976-11-29 1980-02-20 Chrysler Uk Vehicle bodies
GB2285481A (en) * 1994-01-11 1995-07-12 Mitsui Mining & Smelting Co Apparatus mounting a latch device to a sliding door
FR2760778A1 (fr) * 1997-03-11 1998-09-18 Valeo Systemes De Fermetures Serrure pour vehicule automobile
US5860683A (en) * 1995-06-09 1999-01-19 Ohi Seisakusho Co., Ltd. Automotive door lock device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561538A (en) * 1976-11-29 1980-02-20 Chrysler Uk Vehicle bodies
GB2285481A (en) * 1994-01-11 1995-07-12 Mitsui Mining & Smelting Co Apparatus mounting a latch device to a sliding door
US5860683A (en) * 1995-06-09 1999-01-19 Ohi Seisakusho Co., Ltd. Automotive door lock device
FR2760778A1 (fr) * 1997-03-11 1998-09-18 Valeo Systemes De Fermetures Serrure pour vehicule automobile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006031226A1 (de) * 2006-07-06 2008-01-17 Audi Ag Schloss für eine Fahrzeugtür
DE102006031226B4 (de) * 2006-07-06 2012-05-31 Audi Ag Schloss für eine Fahrzeugtür
CN102345420A (zh) * 2010-08-03 2012-02-08 通用汽车环球科技运作有限责任公司 闩锁系统
CN102345420B (zh) * 2010-08-03 2014-06-25 通用汽车环球科技运作有限责任公司 闩锁系统

Also Published As

Publication number Publication date
EP1069269B1 (de) 2005-03-02
DE60018332T2 (de) 2005-06-30
DE60018332D1 (de) 2005-04-07
GB9916632D0 (en) 1999-09-15

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