FR2786522A1 - LOCK FOR MOTOR VEHICLE DOOR - Google Patents

Abstract

Lock for a motor vehicle door, comprising a lock housing with at least two compartments, of which a so-called retention compartment contains a bolt and a pawl, and of which a second so-called kinematics compartment contains an operating rod (11) capable of moving the pawl towards its position of release from the bolt, an interior opening lever (21) able to cooperate with said operating rod under the action of an interior control member (24), an exterior opening lever (20) ) adapted to cooperate with said operating rod under the action of an external control member (26), and a locking / unlocking means (27, 28, 30, 40), characterized in that the lever of inner opening (21) is a part identical to the outer opening lever (20), said part being mounted in the housing by its front or back, depending on whether it is used as an inner opening lever or as a control lever. exterior opening.

Description

LOCK FOR MOTOR VEHICLE DOOR

  The present invention relates to a lock for a motor vehicle door, with locking / unlocking control.

mechanical or electrical.

  The object of the invention is to propose a new lock including the opening control and internal locking mechanisms and the opening and locking control mechanisms.

  external condemnation are simplified.

  To this end, the subject of the invention is a lock for the door of a motor vehicle, comprising a lock box with at least two compartments, one of which a so-called retention compartment contains a bolt capable of retaining a keeper and a pawl capable of blocking the latch in the strike retaining position, and a second so-called kinematic compartment contains an operating rod capable of moving the pawl towards its bolt release position, an interior opening lever capable of cooperating with said operating rod under the action of an interior control member, for example a cable or a rod connected to an interior door handle, an exterior opening lever capable of cooperating with said operating rod under the action of a control member exterior, for example a cable or a rod connected to an exterior door handle, and a locking / unlocking means, characterized in that the interior opening lever is a part identical to the exterior opening lever, said part being mounted in the housing by its front or back, depending on whether it is used as a lever

  inside opening or as outside opening lever.

  In a particular embodiment, said part has an opening for its articulation on a pin carried by the operating rod, so that the internal opening lever and the external opening lever are articulated on the same pin of the rod of maneuver. Said part can include a fork between the branches of which is intended to engage a locking lug of the aforementioned locking / unlocking means, to pivot said part between a locked and unlocked position. Said piece may also include a tab extending laterally relative to the body of said piece, said tab being able to cooperate with

  one of the aforementioned control means.

  Advantageously, the interior opening lever and the exterior opening lever are mounted in the housing symmetrically with respect to a plane of symmetry perpendicular to their laying plane and passing through their common axis of articulation. In this case, the interior and exterior control means can be arranged parallel in the housing and symmetrically with respect to said plane.

of symmetry.

  According to another characteristic, the tabs of the interior opening lever and the exterior opening lever cross at said plane of symmetry, so that the interior control means is located on the side opposite the fork of the opening lever. interior,

  with respect to said plane of symmetry.

  According to yet another characteristic, the locking / unlocking means comprises two locking wheels, each wheel having a locking lug radially eccentrically and perpendicularly projecting from the plane of said wheel; said wheels being arranged so that the lug of a first wheel engages in the range of the outer opening lever, and the lug of the second wheel engages in the range of the inner opening lever , each wheel being able to be driven in rotation in order to tilt the associated lever towards a disengaged position, in which its lug no longer cooperates with the corresponding control means. Advantageously, each wheel is driven by a separate electric motor, said first wheel and its associated drive motor being mounted in the housing symmetrically with said second wheel and its drive motor.

  associated, with respect to said plane of symmetry.

  According to another characteristic, each locking pin has at its base a boss of upper section, against which the fork of said part is capable of bearing. In this case, it is possible to provide in the kinematics compartment of the lock housing, a contactor for detecting the inner lock, capable of cooperating with the boss of said second wheel, when said

  second wheel turns to its inner locked position.

  Advantageously, the lock comprises a contactor for detecting the opening of the lock, this contactor being placed in the kinematics compartment along a deformable partition separating the kinematics compartment from the retention compartment, so that during the pivoting of the bolt towards its open position, a portion of the bolt comes into contact with said partition and deforms it

to activate said contactor.

  In a first embodiment, the operating rod is pivotally mounted on a hinge pin which is integral in rotation with an arm located in the retention compartment of the housing, said arm being able to cooperate with the pawl, for the bring it in

bolt release position.

  In another embodiment, the operating rod comprises a lug which protrudes from the plane of the rod and passes through an oblong opening in the bottom of the housing to come to cooperate with the pawl in the retention compartment, said rod being movable substantially linearly under the action of the opening levers. Advantageously, the operating rod comprises a stud which is sandwiched between the branches of a spring, to return said rod to its inactive position, a boss being formed in the kinematics compartment to come to be inserted between the branches of the spring. , so that the movement of the link only causes the

  displacement of one of the two branches of the spring.

  According to yet another characteristic, each locking wheel is integral with its axis of rotation, one end of which has a slot accessible outside the housing, for example at the edge of the door, to allow an emergency locking

  mechanical, in the event of an electrical engine failure.

  Advantageously, the kinematics compartment of the housing

  extends on one side of the retention compartment.

  To better understand the object of the invention, we will now describe, by way of purely illustrative and nonlimiting examples, several embodiments shown in the drawing.

Annex.

  In this drawing - Figure 1 is a perspective view of an embodiment of the lock of the invention, the cover of the kinematics compartment having been omitted; - Figure 2 is a top view of Figure 1 - Figure 3 is a perspective view, partially exploded of an alternative embodiment of the lock of the invention; - Figure 4 is a perspective view from below of the housing of Figure 3; - Figure 4A is a partial schematic view in section of Figure 4; Figure 5 is a partially broken away view in side elevation, along arrow V in Figure 1; - Figure 6 is a partial schematic view in section along line VI of Figure 7; and - Figure 7 is an enlarged view of Figure 2, some of which

items have been omitted.

  The lock of the invention comprises a plastic casing 1 of substantially parallelepiped shape, a metal counter plate 2 having a substantially U-shaped profile and a plastic casing 3 illustrated only in FIG. 3. The metal counter plate 2 is mounted on the underside of the housing 1, to define the lock retention compartment, the two lateral wings 2a and 2b of the counter plate 2 extending in a recess la formed on the longitudinal walls

of housing 1.

  The wing 2b is flush with the upper surface lb of the housing 1, while the wing 2a extends beyond the upper surface lb

  of the housing 1. A cutout 4 is formed in the wing 2a of the counter

  plate 2 and extends in 4a partially on the bottom 2c of the counter

  plate 2, this cutout 4 defining the inlet of the lock ditch.

  In line with this cutout 4, a recess 5 is formed in the housing 1 for the passage of the keeper, the recess 5 being provided with an elastically deformable tab 5a, to dampen the entry of the keeper G into the drain . As best seen in Figure 4, the recesses 1a of the housing 1 extend to the left by a thicker portion 6 whose lower surface is in the extension of the bottom 2c of the counter plate 2. The retention compartment is thus defined between

  the bottom 2c of the counter plate 2 and the lower surface lc of the housing 1.

  The thicker portion 6 defines, for its part, the compartment of

  kinematics and motorization of the lock.

  The lock retention compartment contains a fork bolt 7 which is rotatably mounted on an axis 8, so as to retain a keeper G, when the lock is in the closed position. The retention compartment also contains a pawl 9 which is articulated on an axis 10 and capable of locking the bolt 7 in its position for retaining the keeper G. 1o The pawl 9 has a pin 9a for its operation by a mechanism

opening the lock.

  In a first embodiment represented in FIGS. 1, 2, 6 and 7, the kinematics compartment of the lock contains an operating rod 11, which has at one end a hinge pin 12 which passes through the bottom of the compartment kinematics and enters the retention compartment, as illustrated in FIG. 6. The axis of rotation 12 is integral in rotation with an arm 15, which is capable of cooperating with the lug 9a of the pawl 9. At its other end , the operating rod 11 comprises an articulation pin 13 and a boss 14 whose functions will be explained below. In another embodiment shown in FIGS. 3, 4 and 4A, the operating rod 111 comprises on its upper face an articulation pin 113 and a boss 114 which extend in the kinematics compartment of the housing, and which have the same functions as the aforementioned articulation pin 13 and the boss 14. The operating rod 111 further comprises, on its lower face, a lug 112 which passes through an oblong slot 115 in the bottom lc of the housing, to come to cooperate with the lug 9a of the pawl 9 in the retention compartment. The link 111 can be moved linearly in the direction of arrow F in FIG. 4A, unlike the link 11 mentioned above.

  which pivots around the hinge pin 12.

  The boss 14 or 114 is sandwiched between two branches of a pin spring 16 which is mounted on a projecting lug 17 of the housing 1. Between the lug 17 of the housing and the boss 14 or 114 of the operating rod 11 or 111, the two branches of the spring 16 intersect and are arranged on either side of a projecting lug 18 provided on the housing. Thus, during the movement of the operating rod 11 or 111, one of the branches of the spring 16 remains in abutment against the lug 18 of the housing, while the other branch of the spring 16 is driven by the boss 14, 114 of the link 11, 111, said branch thus deforming elastically to ensure the elastic return of the

  operating rod in its rest position.

  On the articulation pin 13, 113, are mounted superimposed, an external opening lever 20 and an internal opening lever 21. The external opening lever 20 is a part identical to the internal opening lever 21, but mounted facing upside down relative to the other lever. Each lever 20, 21 has at its end, opposite the hinge pin 13, a fork 20a, 21a, and in the vicinity of said fork, a tab 20b, 21b extending laterally. The lateral tabs 21a, 21b intersect, at a plane of symmetry P for mounting the two levers 20 and 21, as shown in FIG. 2. This plane of symmetry P is

  perpendicular to the plane of the housing 1 and to the axis of bagging.

  The portion 6 of the housing 1 has at one end two connectors 22 through which the sheath 23 of an interior opening control cable 24 and the sheath 25 of an exterior opening control cable 26 pass. Each cable 24, 26 has at its end located in the kinematics compartment a projecting pin 24a, 26a carried by an elongated slide 24b, 26b. The slider 24b, 26b is intended to hold the pin 24a, 26a projecting upwards, so that the latter can cooperate with, respectively, the tab 21b of the internal opening lever 21 and the tab 20b of the external opening lever 20. The cables 24, 26 are intended to be connected to an interior door handle and an exterior door handle respectively (not shown). Under the action of a traction generated by a handle on the associated cable, the protruding pin 24a or 26a causes a linear displacement of the tab 21b or 20b of the associated opening lever, and consequently a pivoting of the operating rod 11 or a linear translation of the operating rod

111, to act on the pawl 9.

  The lock shown in the drawings being with electric locking / unlocking control, it comprises in the kinematics compartment two electric motors 27, 28. In FIG. 5, it can be seen that the motor shaft 28a of the electric motor 28 projects towards the bottom and is integral in rotation with a pinion 29, said pinion 29 meshing peripherally with a toothed wheel 30 integral in rotation with a rotation shaft 31 which is mounted in a bearing 32. The rotation shaft 31 of the wheel 30 is accessible outside the housing, as visible in FIG. 4, and has on its external face a diametral slot 31a to allow the user to turn the wheel 30, by inserting the tip of his key into the slot 3 la, to carry out an emergency locking of the rear doors,

in the event of an electrical failure.

  As can be seen in FIG. 5, the wheel 30 has on its upper face a boss 33 radially eccentric and perpendicularly projecting with respect to its plane, the boss 33 comprising at its top a locking pin 34 of lower section. The locking pin 34 is intended to engage between the branches of the fork 21a of the interior opening lever 21. To lock the lock with respect to the interior, the wheel 30 pivots clockwise on the Figure 2, to tilt the interior opening lever 21 counterclockwise, until its side tab 21b escapes

  to pin 24a of the interior opening control cable 24.

  In the kinematics compartment of the lock, a contactor 35 is also provided for detecting the internal locked position, this contactor 35 comprising a flexible blade 36 carrying at its free end a roller 37 which is capable of coming into contact with the boss 33 of the locking wheel 30. When the locking wheel 30 pivots towards its locked position, the boss 33 pushes the roller 37 of the contactor, so as to close a switch of the contactor 35, which can thus signal on the dashboard of the

  vehicle, the locked interior condition of the lock.

  Similarly, the electric motor 27 is capable of rotating a locking wheel 40 which is integral with its axis of rotation 41, one end of which is accessible outside the housing and has a slot 41a for its direct operation by the user. The locking wheel 40 also includes a boss 43 of oblong section, provided at its top with a locking pin 44. The locking pin 44 engages in the fork 20a of the external opening lever 20. The fork 20a of the external opening lever 20 can come to bear on the boss 43 of the wheel

conviction 40.

  In FIGS. 2 and 7, a contactor 50 can be seen for detecting the open position of the lock. This contactor 50 is placed in a housing 51 of the kinematics compartment of the lock, since the latter is provided sealed. The contactor 50 comprises a flexible contact blade 52, which extends in the vicinity of a deformable wall 51a

  separating the housing 51 from the lock retention compartment.

  This wall 51a is able to be deformed by a projection 8a of the bolt 8, when the latter pivots towards its open position. The deformation of the wall 51a causes the contact blade 50 to close the switch of the contactor 50, thereby signaling the opening of the lock. It is advantageous to use the link 11, instead of the link 111, because it is easier to seal the kinematics compartment at the hinge pin 12, than to seal

  the oblong slot 115 in the case of the link 111.

  It will be noted that to reduce the costs of the lock and simplify its assembly, the electric motor, the locking wheel, the opening lever and the opening control cable are identical for the interior as for the exterior. In addition, the elements provided for the interior are arranged symmetrically by

  compared to the aforementioned plan P, to the elements provided for outside.

  The cowling 3 comprises two hollow projecting portions 3a intended to cover the electric motors 27 and 28 and a projecting tubular portion 3b intended to contain connection tabs

electric 3c.

  The operation of the lock will now be briefly described. In the position illustrated in Figures 2 and 7, the lock is in

  its closed and unlocked state vis-à-vis the interior and exterior.

  When a user actuates the exterior door handle, traction is generated on the exterior opening control cable 26, which drives, by its pin 26a, the tab 20b of the exterior opening lever 20. The exterior opening lever 20 moves linearly, being guided in translation by its fork 20a which slides on the locking pin 44. The linear movement of the external opening lever 20 causes the movement of the hinge pin 13 of the operating rod 11 which pivots in counterclockwise. Simultaneously, the arm 15 illustrated in FIG. 6 pivots counterclockwise and pushes back the pin 9a of the pawl 9, to lo release the bolt 8. The pivoting of the link 11, simultaneously causes the linear movement of the lever interior opening

  21, which slides by its fork 21a on the locking pin 33.

  The tab 21b of the interior opening lever 21 thus departs from the pin 24a of the interior opening control cable 24, without however moving the latter, so that the interior door handle remains stationary. The slide 26b of the external opening control cable 26 is intended to prevent rotation of the pin 26a about the axis of the cable 26, to prevent this pin 26a from escaping any

  cooperation with tab 20b of the external opening lever.

  Actuating the interior door handle has an effect

  similar to that of the exterior door handle.

  When the user wishes to lock the lock from the outside, he can activate the motor 27, for example using a button on a remote control unit, so as to drive the locking wheel 40 counterclockwise. The rotation of the locking wheel 40 causes the locking pin 44 to rotate, which makes the external opening lever 20 rotate clockwise around the articulation pin 13, so that the tab 20b escapes any cooperation with the external opening control cable 26. We thus obtained a condemnation of the lock vis-à-vis

  the outside, without affecting the opening from the inside.

  Of course, the locking wheel 40 could also be mechanically driven by a lock cylinder, for a front door, or by a frieze zipper, for a rear door. It could also be provided that the motor 27 is activated by an identifier on board the vehicle, which detects the remoteness of an identifier o10 worn by a badge on the user, in the case of a system

says "hands-free".

  When the user also wishes to condemn the lock vis-à-vis the interior, in the case of a super lock, or when the user wishes to condemn the lock only vis-à-vis the interior , in the case of a child lock for the rear doors, it activates the motor 28 to drive the interior opening lever to its locked position. The contactor 35 will then indicate the locked position from the inside of the lock, for example at the

  io level of the vehicle dashboard.

  Although the invention has been described in connection with several particular embodiments, it is obvious that it is in no way limited thereto and that it includes all the technical equivalents of the means described as well as their combinations if these enter

iS5 in the context of the invention.

l1

Claims (17)

  1. Lock for a motor vehicle door, comprising a lock housing (1) with at least two compartments, one of which a so-called retention compartment contains a bolt (7) capable of retaining a keeper (G) and a pawl (9) capable to block the latch in the strike retaining position, and a second so-called kinematic compartment contains an operating rod (11, 111) capable of moving the pawl towards its bolt release position, an interior opening lever ( 21) capable of cooperating with said operating rod under the action o10 of an internal control member (24), an external opening lever (20) capable of cooperating with said operating rod under the action of a external control member (26), and locking / unlocking means (27, 28, 30, 40), characterized in that the internal opening lever (21) is a part identical to the external opening lever ( 20), said part being mounted in the bo itier (1) by its front or back, depending on whether it is used as   internal opening lever or as external opening lever.   2. Lock according to claim 1, characterized in that said part (20, 21) has an opening for its articulation on a pin (13, 113) carried by the operating rod (11, 111), so that the internal opening lever (21) and the external opening lever (20) are articulated on the same pin of the operating rod. 3. Lock according to claim 2, characterized in that said part comprises a fork (20a, 21a) between the branches of which is intended to engage a locking lug (34, 44) of the aforementioned locking / unlocking means , to rotate   said part between a locked and unlocked position.   4. Lock according to claim 2 or 3, characterized in that said part includes a lug (20b, 21b) extending laterally relative to the body of said part, said lug being able to cooperate   with one of the aforementioned control means (24, 26).   5. Lock according to one of claims 2 to 4, characterized by   the fact that the interior opening lever (21) and the exterior opening lever (20) are mounted in the housing (1) symmetrically with respect to a plane of symmetry (P) perpendicular to their laying plane and   passing through their common axis of articulation (13).   6. Lock according to claim 5, characterized in that the internal (24) and external (26) control means are arranged parallel in the housing (1) and symmetrically with respect to said plane of symmetry (P).   7. Lock according to claims 4 and 6 taken in combination,   characterized in that the tabs (20b, 212) of the interior opening lever (21) and the exterior opening lever (20) intersect at said plane of symmetry (P), so that the control means inside (24) is located on the side opposite the fork (21a) of the lever   of internal opening (21), with respect to said plane of symmetry.   8. Lock according to claim 3 taken alone or in combination   with one of claims 4 to 7, characterized in that the   locking / unlocking means comprises two locking wheels (30, 40), each wheel having a locking lug (34, 44) radially eccentrically and perpendicularly projecting from the plane of said wheel, said wheels being arranged so that the lug (44) of a first wheel (40) engages in the fork (20a) of the external opening lever (20), and the locking lug (34) of the second wheel (30) engages in the fork (21a) of the interior opening lever (21), each wheel being able to be driven in rotation to tilt the associated lever towards a disengaged position, in which its lug (20b, 21b) does not   cooperates more with the corresponding control means (24, 26).   9. Lock according to claims 5 and 8 taken in combination,   characterized in that each wheel (30, 40) is driven by a separate electric motor (27, 28), said first wheel (40) and its associated drive motor (27) being mounted in the housing (1) symmetrically to said second wheel (30) and its motor   associated drive (28), with respect to said plane of symmetry (P).   10. Lock according to claim 8 or 9, characterized in that each locking pin (34, 44) has at its base a   boss (33, 43) of upper section.   11. Lock according to one of claims 8 to 10, characterized   by the fact that the kinematics compartment of the lock housing (1) contains a contactor (35) for detecting the internal locking, capable of cooperating with the boss (33) of said second wheel (30), when said second wheel rotates toward its inner doomed position.   12. Lock according to one of claims 1 to 11, characterized   by the fact that it comprises a contactor (50) for detecting the opening of the lock, this contactor being placed in the kinematics compartment along a deformable partition (51a) separating the kinematics compartment from the retention compartment, so that when the bolt (7) pivots towards its open position, a portion (8a) of the bolt comes into contact with said partition (51a) and the   deforms to activate said contactor (50).   13. Lock according to one of claims 1 to 12, characterized   by the fact that the operating rod (11) is pivotally mounted on a hinge pin (12) which is rotationally integral with an arm (15) located in the retention compartment of the housing (1), said arm being able to cooperate with the pawl (9), to bring it into its position release of the bolt (7).   14. Lock according to one of claims 1 to 12, characterized   by the fact that the operating rod (111) comprises a lug (12) which projects from the plane of the rod and passes through an oblong opening (15) in the bottom of the housing (1) to cooperate with the pawl (9) in the retention compartment, said link being movable substantially linearly under the action of the opening levers (20, 21).   15. Lock according to one of claims 1 to 14, characterized   by the fact that the operating rod (11, 111) comprises a stud (14, 114) which is sandwiched between the branches of a spring (16), to recall said rod in its inactive position, a boss (18 ) being formed in the kinematics compartment to come to be interposed between the branches of the spring, so that the movement of the rod only causes the displacement of one of the two branches of the spring.   16. Lock according to one of claims 8 to 11, characterized   by the fact that each locking wheel (30, 40) is integral with its axis of rotation (31, 41), one end of which has a slot (31a, 41a) accessible outside the housing (1), for example at the door edge, to allow an emergency locking   mechanical, in case of electrical failure. 17. Lock according to one of claims 1 to 16, characterized   by the fact that the kinematics compartment of the housing extends on one side of the retention compartment.