EP0665352B2 - Serrure à condamnation mécanique - Google Patents

Serrure à condamnation mécanique Download PDF

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Publication number
EP0665352B2
EP0665352B2 EP19950300391 EP95300391A EP0665352B2 EP 0665352 B2 EP0665352 B2 EP 0665352B2 EP 19950300391 EP19950300391 EP 19950300391 EP 95300391 A EP95300391 A EP 95300391A EP 0665352 B2 EP0665352 B2 EP 0665352B2
Authority
EP
European Patent Office
Prior art keywords
lever
cam
lock
barrel
housing
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
EP19950300391
Other languages
German (de)
English (en)
Other versions
EP0665352A1 (fr
EP0665352B1 (fr
Inventor
David William Jones
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.)
Valeo Engine Cooling UK Ltd
Original Assignee
Valeo Security Systems Ltd
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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Application filed by Valeo Security Systems Ltd filed Critical Valeo Security Systems Ltd
Publication of EP0665352A1 publication Critical patent/EP0665352A1/fr
Application granted granted Critical
Publication of EP0665352B1 publication Critical patent/EP0665352B1/fr
Publication of EP0665352B2 publication Critical patent/EP0665352B2/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
    • 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
    • E05B77/28—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 for anti-theft purposes, e.g. double-locking or super-locking
    • E05B77/283—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 for anti-theft purposes, e.g. double-locking or super-locking initiated by hand actuation, e.g. by using a mechanical key
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/04—Devices for coupling the turning cylinder of a single or a double cylinder lock with the bolt operating member

Definitions

  • the present invention relates to a lock which has a mechanical deadlock facility, and in particular, but not exclusively, to a lock for use in an automobile door.
  • a conventional automobile door locking system includes a key operated lock, and a latch device which is disposed at a free edge of the door.
  • the latch device is linked to the lock through a link rod attached between the latch and a lever portion of the lock.
  • the latch and lock are also connected by means of mechanical linkages to a cill button provided within the vehicle, located adjacent the internal edge of the window cill, which is raised to unlock the door, and lowered to lock the door.
  • the linkages to the cill button and lock are usually connected at opposite ends of a lever device in the latch.
  • Also connected to the latch through further linkages are an exterior handle release, and interior release.
  • the lock itself conventionally comprises a central rotatable lock barrel having a keyway therein disposed within a housing, with an arrangement of tumblers adjacent the keyway which become appropriately aligned on insertion of the key to allow rotation of the barrel within the lock housing.
  • a lever arrangement is driven by the barrel, with a mechanical linkage attached between the lever and the latch so that as the barrel is rotated in an unlocking or locking action the lever is raised or lowered, effecting locking or unlocking of the latch device. More specifically, the lock is arranged so that the key can only be inserted or retracted into the barrel when the barrel is at a particular orientation in the lock (a "neutral" position).
  • Locking or unlocking requires the operator to rotate the key from this position so as to move the lever, and subsequently return the key to its neutral position to allow its retraction from the lock. To prevent the lever from following the key and barrel as they are rotated back to the neutral position in this action a degree of free play between the barrel and the lever is necessary. This is discussed in further detail in the specific description.
  • the present invention seeks to provide a simple mechanical lock which can be readily incorporated into an otherwise conventional mechanical locking system, and which has a deadlock effect. When so incorporated even if access to the internal linkages within the door can be qained, the latch cannot be opened.
  • a lock for attachment to a latch device comprising a housing, a generally cylindrical barrel arranged therein having a keyway, the barrel being rotatable within the housing on insertion of a key, and a lever rotatable between a first position which represents a locked position and a second position angularly spaced from the first position which represents an unlocked position, characterised in that a cam is fixed to the barrel for rotation therewith; the lever is adapted to be rotated by the cam with free play provided between the lever and cam, said free play allowing the cam and barrel to be returned to a neutral position after locking and after unlocking without driving the lever therewith and allowing said lever to be moved independently of the barrel in said second position; and engagement means are provided between the lever and housing, said engagement means being adapted to prevent rotation of the lever when in the first position with the barrel in the neutral position.
  • the engagement means comprise a locking element constrained to move with the lever on the rotation thereof, a first housing recess of the housing, at least a part of the locking element being received in said recess when the lever to the first position with the barrel in the neutral position, whereby rotation of the lever is prevented and the lock is deadlocked.
  • the cam may comprise a generally circular plate an edge portion of which lies adjacent the locking element to prevent movement thereof from the first housing recess when the lock is deadlocked and having a first radial cam recess disposed so that it is an gularly beyond the locking element in the direction of locking when the lock is deadlocked.
  • a portion of the housing defining an edge of the first housing recess which lies in the unlocking direction may be shaped to urge said locking element radially inwardly as the lever is urged in the un-locking direction, whereby on rotation of the barrel in the unlocking direction the first cam recess becomes aligned with locking element which is received therein, allowing the lever to be rotated.
  • the housing and cam are provided with second respective recesses angularly spaced from the first recesses in the unlocking direction, into which second housing recess said locking element is urged as the barrel is returned to the neutral position after movement of the lever to the unlocked position, and into which second cam recess the locking element is urged on rotation of the cam and lever in the locking direction from an unlocked position.
  • the second housing recess permits limited rotation of the lever to a sufficient degree to allow conventional locking by means of a cill button without engaging the deadlock facility.
  • the locking element is disposed at an outer edge of the lever, between a pair of upstanding lugs, one of which is abutted by a drive surface of the cam during rotation thereof on locking, and the other of which is abutted by an oppositely directed drive surface of the cam during rotation thereof during unlocking, said drive surfaces being angularly spaced to provide the free play between the cam and the lever.
  • lugs thereby serve both to receive drive, and to constrain the locking element further simplifying the lock.
  • the lever preferably comprises a plate-like member having a portion which overlies an end of the housing which is provided with an aperture therethrough through which a portion of the barrel extends, and an elongate portion extending radially therefrom, with said upstanding lugs provided at a side of the lever which is opposite to the elongate portion.
  • the cam is preferably a plate-like member which overlies the lever, and is keyed to the barrel for rotation therewith.
  • the lock can be formed of a very similar overall size to a conventional lock, so that a conventional lock can be readily replaced by a lock in accordance with the invention without modification of the vehicle door.
  • the locking element may comprise a cylindrical roller, or alternatively a lever element pivoted at one end to an upstanding lug of the lever and having at its free end an enlarged head portion.
  • the invention also resides in a door lock as described above in combination with a door latch, with a mechanical linkage provided between the lever of the lock and the latch.
  • Figure 1 shows a locking system for a vehicle door which is conventional in its construction. Although the precise arrangement illustrated is employed with a sliding door, the principles as they relate to the invention apply equally to conventional pivoting door arrangements, as is discussed in further detail below.
  • the system generally designated 2, comprises a latch device 4 illustrated part-schematically, which is disposed at a free edge of a door (not shown).
  • the latch device 4 comprises a pivoted latch member 7 having a latch claw 5.
  • the latch claw 5 is cammed over the striker bar 6 in a clockwise sense and against the action of spring 9 to engage over the striker bar 6.
  • the latch member 7 abuts a blocking bar 8 which is pivoted about its lower end.
  • the blocking bar 8 itself is biased by spring 9a in a clockwise sense to engage under the latch member 7, preventing rotation of the latch member.
  • a rocker lever 10 is acted on at opposite sides of its pivot by a lock 11 having a lever 12, through linkage 13, and by a cill button 14 disposed adjacent a window of the vehicle, through linkage 15.
  • Connected to the blocking bar 8 are an internal door release 16, through a linkage 17, and external door handle release 18, through linkage 19.
  • the latch is shown in a locked condition in which the latch member 7 is prevented from movement by the blocking bar 8 and lock 11 is locked with the lever 12 of the lock in the "up" locked position, and with the cill button 14 in the "down" locked position.
  • the rocker lever 10 is moved to an unlocked position in which the end thereof adjacent the blocking bar 8 is lowered, either by lifting the cill button 14, or unlocking the lock 11 which moves the lever 12 to its "down" position.
  • the rocker lever pivoted so that its end adjacent the blocking bar 8 is lowered the blocking bar 8 can be moved towards the rocker lever 10 by the internal 16 or external 18 door releases, with the end of the rocker lever 10 being received in a cutout 20 of the blocking bar 8.
  • the latch member 7 is then able to pivot past the end of the blocking bar 8 to release the claw 5 from the striker bar 6, allowing the vehicle door to be opened.
  • the locking arrangement is generally similar, although here the latch claw takes a different form comprising a claw mounted on a shaft which rotates to engage over a striker bar fixed to the car door frame, as is well known in the art.
  • the latch claw takes a different form comprising a claw mounted on a shaft which rotates to engage over a striker bar fixed to the car door frame, as is well known in the art.
  • blocking bar and rocker lever or equivalent which prevents movement of the latch claw when in a locked condition.
  • movement of the cill button or internal release allows the latch claw to move over the bar.
  • the lock lever 12 in the locked condition which is illustrated in Figure 1, the lock lever 12 is free to pivot downwardly to a degree in a clockwise sense, owing to the freeplay which is provided between the lock barrel and the lever 12, which freeplay is provided to enable the key to be retracted from the barrel after locking, as discussed above.
  • This freeplay means that a thief who obtains access to the rocker lever 10 or linkages 13 or 15 is able to move the rocker lever 10 to an unlocked position in which the door can be opened by operating the internal or external door releases 16,18. Also, if a thief breaks the vehicle window he can simply raise the cill button 14 to unlock the door.
  • the lock in accordance with the present invention eliminates the need for this freeplay, and can be incorporated into the arrangement of Figure 1 to replace the conventional lock 11.
  • a first embodiment of a lock in accordance with the present invention is illustrated in an exploded view in Figure 2, and in end views illustrating the locking and unlocking sequences, in Figures 3(a) to (f).
  • the lock 11' comprises a generally cylindrical lock housing 21 in which a conventional lock barrel 22 is seated.
  • the lock barrel 22 has a keyway therein of which the keyhole 24 is visible, and internally a plurality of tumblers (not visible) so that on insertion of the appropriate key, the tumblers are appropriately positioned in order to allow rotation of the barrel 22 within the housing 21, in the conventional manner.
  • the lock housing 21 is mounted in the door panel.
  • a lever 26 Disposed at an end of the lock barrel in the axial direction is a lever 26 in the form of a flat generally plate-like body.
  • the lever 26 comprises a generally circular portion which overlies the housing 21 and an elongate portion extending therefrom to which is attached a link rod 13 (not shown in Figure 2) which at its opposite end is coupled to the latch device 4, as shown in Figure 1.
  • the lever 26 carries a cylindrical roller 40 which constitutes a locking element. This roller 40 is carried between opposed lugs 44,45 which up-stand from a face of the lever 26. The roller 40 is however free to move radially between the lugs.
  • the lever 26 is itself overlain by a rotary cam 30 in the form of a generally circular plate which is keyed to the lock barrel 22 for rotation therewith.
  • An axially protruding lip-like edge region of the housing 21 defines a first housing recess 34 and second housing recess 32 separated by a housing land 36.
  • the housing land 36 is defined between curved inclined surfaces which serve to force the roller 40 inwardly between the lugs 44 as the lever 26 carries the roller 40 thereover.
  • the cam 30 includes an arcuate cut-out region 46 on a side thereof, which cut-out region comprises end stops 48,50 and curved first and second cam recesses 54,52 spaced from the respective end stops 50,48 with a cam land 53 therebetween.
  • a cover portion upstanding from the cam 30 overlies the cut-out region to prevent exposure of this region of the lock 11'. This portion is, however, omitted from Figures 2, 3 and 4 for reasons of clarity.
  • Element 56 is a retaining element in the form of a springy metal clip which serves to hold the cam 30 and lever 26 on the barrel 22.
  • Figure 3(a) shows the lock in its unlocked position, with the barrel 22 and cam 30 (which are fixed for rotation to each other) in a "neutral" position in which a key can be inserted or retracted.
  • a key is inserted into the keyhole 24 and rotated in an anticlockwise sense as indicated in Figure 3(b).
  • the end stop 48 of the cam 30 which faces the direction of rotation bears against the upstanding lug 44 so that the lever 26 is also driven in the anticlockwise direction.
  • the lugs 44, 45 carry the roller 40 past the land 36, whose shape urges the roller radially inwards between the lugs 44,45 as it passes the housing land 36, and into the second cam recess 52.
  • the roller 40 is carried beyond the housing land 36 to face the first housing recess 34 until the position of Figure 3(c) is reached.
  • the cam 30 and barrel 22 are returned to the neutral position by a clockwise rotation to the position shown in Figure 3(d).
  • the cam 30 and in particular the cam land 53 between the cam recesses 52 and 54 urges the roller 40 out into the first housing recess 34.
  • the key is inserted into the keyhole 24 and rotated in a clockwise sense from the position of Figure 3(d), through the position of Figure 3(e) (which shows the end stop 50 of the cam 30 having just engaged the lug 45) to the position shown in Figure 3 (f).
  • the first cam recess 54 faces the roller 40.
  • the roller 40 is urged into the first cam recess 54,-past the housing land 36, and into the second housing recess 32, with the lever 26 now in the unlocked "down" position.
  • the lock 11" is identical to that of the above-described embodiment, except that the roller 40 is replaced by a locking element in the form of a lever 60 pivotably mounted at 62 to upstanding lug 44, and having a cylindrical or spherical actuating end portion which is moved in the same manner as the roller 40 in or out of the recesses of the housing and cam as the lock is operated.
  • the position of Figure 4(a) corresponds to the neutral, unlocked position of Figure 3 (a)
  • the position of Figure 4(b) corresponds to the intermediate position of Figure 3(c) in which the lock is part-way through the locking sequence.

Landscapes

  • Lock And Its Accessories (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (12)

  1. Serrure destinée à être attachée à un dispositif de fermeture, comprenant un corps (21), un barillet de manière générale cylindrique (22) placé dans celui-ci et ayant un chemin de clé, le barillet (22) pouvant être tourné dans le corps (12) après introduction d'une clé, et un levier (26) pouvant tourner entre une première position qui représente une position verrouillée et une deuxième position espacée angulairement de la première qui représente une position dévérrouillée, caractérisée par le fait que :
    une came (30) est fixée au barillet (22) pour tourner avec celui-ci ;
    le levier (26) est propre à être tourné par la came avec un libre jeu prévu entre le levier (26) et la came (30) pour que la came et le barillet puissent être ramenés à une position neutre après verrouillage et après déverrouillage sans entraíner le levier (26) avec eux et permettant audit levier d'être déplacé dans ladite seconde position indépendamment du barillet ; et
    des moyens de mise en prise (40) sont prévus entre le levier et le corps, lesdits moyens de mise en prise (40) étant propres à empêcher la rotation du levier (26) lorsqu'il est dans la première position avec le barillet (22) dans la position neutre.
  2. Serrure selon la revendication 1, dans laquelle les moyens de mise en prise comprennent un élément de verrouillage (40) contraint de se mouvoir avec le levier (26) lors de la rotation de celui-ci, et un premier creux de corps (34) du corps (21), au moins une partie de l'élément de verrouillage (40) étant située dans ledit creux lorsque le levier (26) est dans la première position avec le barillet dans la position neutre, de sorte que la rotation du levier est empêchée et la serrure est condamnée.
  3. Serrure selon la revendication 2, dans laquelle la came (30) comprend une plaque de manière générale circulaire ayant une partie de bord (46) voisine de l'élément de verrouillage (40) pour empêcher un mouvement hors du premier creux de corps (34) lorsque la serrure est condamnée, et ayant un premier creux de came radial (54) placé de façon à être angulairement au-delà de l'élément de verrouillage (40) dans le sens de verrouillage lorsque la serrure est condamnée.
  4. Serrure selon la revendication 3, dans laquelle une partie du corps (21) formant un bord du premier creux de corps (34) qui est situé dans le sens de verrouillage est formée de façon à pousser l'élément de verrouillage (40) radialement vers l'intérieur lorsque le levier (26) est poussé dans le sens de déverrouillage, de sorte que lors de la rotation du barillet (22) dans le sens de déverrouiltage, le premier creux de came (54) s'aligne avec l'élément de verrouillage (40) qui y est reçu, ce qui permet de tourner le levier (26).
  5. Serrure selon l'une des revendications 3 et 4, dans laquelle le corps (21) et la came (30) sont pourvus chacun d'un deuxième creux (32,52) espacé angulairement du premier creux (34, 54) dans le sens de déverrouillage, l'élément de verrouillage (40) est poussé dans le deuxième creux de corps (32) lorsque le barillet (22) est ramené en position neutre après le mouvement du levier (26) jusqu'à la position déverrouillée, et l'élément de verrouillage (40) est poussé dans le deuxième creux de came (54) lors de la rotation de la came (30) et du levier (26) dans le sens de verrouillage à partir d'une position déverrouillée.
  6. Serrure selon l'une des revendications 2 à 5, dans laquelle l'élément de verrouillage (40) est placé sur un bord extérieur du levier (26) entre deux ergots saillants (44, 45) contre l'un desquels s'appuie une surface d'entraínement (48) de la came (30) pendant la rotation de celle-ci lors du verrouillage, et contre l'autre desquels s'appuie une surface d'entraínement (50) de la came (30), dirigée à l'opposé, pendant la rotation de celle-ci lors du déverrouillage, les surfaces d'entraínement étant espacées angulairement pour produire le libre jeu entre la came (30) et le levier (26).
  7. Serrure selon la revendication 6, dans laquelle le levier (26) comprend un élément du genre plaque ayant une partie qui couvre une extrémité du corps qui est pourvue d'une ouverture par laquelle passe une partie centrale du barillet (22), et une partie allongée s'étendant radialement à partir de la précédente, lesdits ergots saillants (44, 45) étant prévus sur un côté du levier qui est opposé à la partie allongée.
  8. Serrure selon l'une des revendications précédentes, dans laquelle la came (30) est un élément du genre plaque qui couvre le levier (26) et est claveté au barillet (22) pour tourner avec celui-ci.
  9. Serrure selon l'une des revendications précédentes, dans laquelle le corps (22) est pourvu, sur un côté de celui-ci de manière générale opposé au levier, d'une lèvre saillant axialement de manière générale en partie circulaire qui définit les premier et deuxième creux (34, 32) du corps.
  10. Serrure selon l'une des revendications 2 à 9, dans laquelle l'élément de verrouillage (40) est un rouleau cylindrique (40) placé entre les ergots du levier.
  11. Serrure selon l'une des revendications 2 à 9, dans laquelle l'élément de verrouillage est un élément de levier (60) monté pivotant à une extrémité sur un ergot (62) du levier et ayant à son extrémité libre une partie de tête élargie.
  12. Serrure selon l'une des revendications précédentes en combinaison avec un dispositif de fermeture de porte d'automobile (4), une tringlerie (13) étant prévue entre le levier de la serrure et le dispositif de fermeture de porte.
EP19950300391 1994-01-28 1995-01-23 Serrure à condamnation mécanique Expired - Lifetime EP0665352B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9401662A GB2286222B (en) 1994-01-28 1994-01-28 Mechanical deadlock
GB9401662 1994-01-28

Publications (3)

Publication Number Publication Date
EP0665352A1 EP0665352A1 (fr) 1995-08-02
EP0665352B1 EP0665352B1 (fr) 1998-04-29
EP0665352B2 true EP0665352B2 (fr) 2003-03-12

Family

ID=10749492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950300391 Expired - Lifetime EP0665352B2 (fr) 1994-01-28 1995-01-23 Serrure à condamnation mécanique

Country Status (4)

Country Link
EP (1) EP0665352B2 (fr)
DE (1) DE69502206T3 (fr)
ES (1) ES2116037T5 (fr)
GB (1) GB2286222B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0029064D0 (en) 2000-11-29 2001-01-10 Meritor Light Vehicle Sys Ltd Lock arrangement
FR3102202B1 (fr) * 2019-10-16 2022-03-18 U Shin France Serrure pour un ouvrant de véhicule automobile

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB996052A (en) * 1960-09-24 1965-06-23 Wilmot Breeden Ltd Improvements in or relating to locking mechanisms
DE2802408C2 (de) * 1978-01-20 1985-12-05 Hülsbeck & Fürst GmbH & Co KG, 5620 Velbert Schließeinrichtung für Kraftfahrzeugtüren o.dgl.
DE2828563C3 (de) * 1978-06-29 1981-11-12 Hülsbeck & Fürst GmbH & Co KG, 5620 Velbert Schließeinrichtung für einen Kraftfahrzeugtürverschluß
DE2852310A1 (de) * 1978-12-02 1980-06-12 Daimler Benz Ag Verriegelungsknopf
DE3513287A1 (de) * 1985-04-13 1986-10-16 Hülsbeck & Fürst GmbH & Co KG, 5620 Velbert Schliesseinrichtung fuer den verschluss einer kraftfahrzeugtuer, vorzugsweise von personenkraftwagen
DE3623990A1 (de) * 1985-07-26 1987-01-29 Volkswagen Ag Schliesssystem fuer eine fahrzeugtuer
DE3737700A1 (de) * 1987-11-06 1989-05-18 Bayerische Motoren Werke Ag Hilfsbetaetigung fuer elektrisch verstellbare schliesseinrichtungen, insbesondere an kraftfahrzeugtueren
GB2228523B (en) * 1989-02-23 1993-04-14 Land Rover Uk Ltd A locking mechanism
DE4312573A1 (de) * 1992-04-30 1993-11-04 Volkswagen Ag Schliesssystem fuer eine kraftfahrzeugtuer

Also Published As

Publication number Publication date
GB2286222B (en) 1997-05-28
DE69502206T2 (de) 1998-08-27
ES2116037T3 (es) 1998-07-01
GB9401662D0 (en) 1994-03-23
ES2116037T5 (es) 2003-12-01
DE69502206T3 (de) 2003-11-13
DE69502206D1 (de) 1998-06-04
EP0665352A1 (fr) 1995-08-02
GB2286222A (en) 1995-08-09
EP0665352B1 (fr) 1998-04-29

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