EP0791708B1 - Locking device, for a vehicle wing, with means for dead-locking of the actuating rods - Google Patents

Description

The invention relates to a device for locking a opening of a motor vehicle comprising means for blocking the linkage.

The invention relates more particularly to a device for lock for a motor vehicle opening, of the type in which an operating member is capable of being moved by a first rest position to a second position unlocking in which it causes the unlocking of a opening lock, through a linkage, so to allow the opening of the opening, of the type in which a locking bolt makes it possible to make the operating member inoperative to prevent opening of the door.

There are different methods to condemn the opening of such a locking device.

A first possibility is to plan the immobilization of the actuator either directly or by immobilization of one of the elements of the linkage which connects the operating member to the lock. Such an arrangement has the disadvantage that in the event attempt to break in the locking device, it is possible to force on the operating member from outside the vehicle and thereby damage either the drive or one of the elements of the linkage.

In order to avoid such damage, it has been proposed to condemn the locking device by means which momentarily remove the mechanical connection between the operation and the lock by disengaging the linkage, either by relative to the operating member, or relative to the lock.

Thus, it is possible to manipulate the operating member without causing the lock to open and without exerting on these elements of constraints likely to cause their damage or breakage.

However, in such an arrangement, if the burglar succeeds to introduce a tool to the locking device allowing to grab an element of the linkage, it can cause the lock to unlock.

The invention therefore aims to provide a device for locking which allows, in the locked position, to ensure a reliable locking of the lock without it being possible to damage the device by manipulating the maneuver.

To this end, the invention provides a device for lock for a motor vehicle opening, of the type comprising an operating member to cause unlocking a lock of the sash via a linkage, in order to allow the opening of the opening, and of the type in which a locking bolt makes it possible to make the operating member inoperative, the linkage comprising a transmission finger mobile, which is controlled by the locking bolt between a active position, in which it cooperates with the organ of operation to cause the unlocking of the lock, and a disengaged position in which it is no longer likely to cooperate with the operating member, and in which the finger transmission cooperates with a stop surface of the locking to block any movement of the linkage in the direction of unlocking the lock, characterized in that the linkage includes a thresher on which the transmission is slidably mounted in one direction substantially perpendicular to the direction of movement of the threshing machine when the linkage is controlled by the operation to unlock the lock.

• l'organe de manoeuvre et la batteuse sont montés articulés respectivement autour de deux axes perpendiculaires sur un bâti du dispositif, la batteuse s'étend sensiblement parallèlement à l'axe d'articulation de l'organe de manoeuvre, le doigt de transmission est monté à une extrémité libre de la batteuse et est susceptible de coulisser selon la direction générale de la batteuse entre sa position active, dans laquelle il coopère avec un levier de l'organe de manoeuvre, et sa position débrayée dans laquelle il coopère avec la surface de butée du bâti ;
• le verrou de condamnation est un verrou rotatif d'axe parallèle à l'axe d'articulation de la batteuse, et le verrou entraíne en rotation autour de son axe un pion excentré qui provoque le déplacement du doigt de transmission par l'intermédiaire d'une biellette qui est articulée sur le pion ;
• la biellette est réalisée venue de matière avec le doigt de transmission ;
• la batteuse est ramenée élastiquement vers une position de repos qui correspond à une position de verrouillage de la serrure et dans laquelle elle coopère avec une surface d'appui du bâti du dispositif, et en position débrayée du doigt de transmission, la batteuse est immobilisée selon les deux sens autour de son axe d'articulation ;
• lorsque le doigt de transmission est en position débrayée et lorsque l'organe de manoeuvre est amené dans sa position sans laquelle il provoque le déverrouillage de la serrure, l'organe de manoeuvre fait obstacle au retour du doigt dans sa position active.

According to other characteristics of the invention:

• the operating member and the threshing machine are mounted articulated respectively around two perpendicular axes on a frame of the device, the threshing machine extends substantially parallel to the articulation axis of the operating member, the transmission finger is mounted at a free end of the thresher and is capable of sliding in the general direction of the thresher between its active position, in which it cooperates with a lever of the operating member, and its disengaged position in which it cooperates with the surface of frame stop;
• the locking bolt is a rotary bolt with an axis parallel to the hinge axis of the threshing machine, and the lock rotates about its axis an eccentric pin which causes the displacement of the transmission finger by means of a link which is articulated on the pin;
• the link is made integrally with the transmission finger;
• the thresher is brought elastically to a rest position which corresponds to a locking position of the lock and in which it cooperates with a bearing surface of the frame of the device, and in the disengaged position of the transmission finger, the thresher is immobilized according to both directions around its axis of articulation;
• when the transmission finger is in the disengaged position and when the operating member is brought into its position without which it causes the unlocking of the lock, the operating member prevents the finger from returning to its active position.

• la figure 1 est une vue en perspective avec arrachement partiel d'un dispositif de verrouillage conforme aux enseignements de l'invention ;
• la figure 2 est une vue en perspective éclatée d'une partie d'un tel dispositif ;
• la figure 3 est une vue de la face interne d'un tel dispositif dans laquelle l'organe de manoeuvre est en position de repos et dans laquelle le doigt de transmission est en position active ;
• la figure 4 est une vue en section selon la ligne 4-4 de la figure 3 ;
• les figures 5 et 6 sont des vues similaires aux figures 3 et 4 dans lequel le doigt de transmission est en position active et l'organe de manoeuvre est en position de déverrouillage ;
• les figures 7 et 8 sont des vues similaires à celles des figures 3 et 4 dans lesquelles le dispositif est représenté avec le doigt de transmission en position débrayée ;
• la figure 9 est une vue en perspective plus détaillée, en éclaté avec arrachement, du montage à coulissement du doigt de transmission sur la batteuse ;
• les figures 10 et 11 sont des vues de l'arrière, en perspective, du doigt de transmission représenté respectivement en position active et en position débrayée.

Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:

• Figure 1 is a perspective view with partial cutaway of a locking device according to the teachings of the invention;
• Figure 2 is an exploded perspective view of part of such a device;
• Figure 3 is a view of the internal face of such a device in which the operating member is in the rest position and in which the transmission finger is in the active position;
• Figure 4 is a sectional view along line 4-4 of Figure 3;
• Figures 5 and 6 are views similar to Figures 3 and 4 wherein the transmission finger is in the active position and the actuator is in the unlocked position;
• Figures 7 and 8 are views similar to those of Figures 3 and 4 in which the device is shown with the transmission finger in the disengaged position;
• Figure 9 is a more detailed perspective view, exploded with parts broken away, of the sliding assembly of the transmission finger on the thresher;
• Figures 10 and 11 are rear views, in perspective, of the transmission finger shown respectively in the active position and in the disengaged position.

There is shown in the figures a device 10 for locking of a motor vehicle opening (not shown) such as a side door or a tailgate.

The device 10 essentially comprises a frame 12, one of which substantially flat rear face 14 is intended to be plated against the internal face (not shown) of a panel bodywork, with interposition around its entire periphery substantially rectangular of a flexible material seal 16 substantially in plate form, to dampen the transmission of vibrations between the device 10 and the body panel.

An operating handle 18 is articulated around an axis A1 horizontal, parallel to the plane of the body panel, on the frame 12. The operating handle 18 comprises a gripping block 20 which is intended to extend outside the panel bodywork to be easily accessible to the user. The handle 18 also has two legs 22 which extend towards the front towards the inside of the body panel. The legs 22 are generally received through a hole provided for this purpose in the body panel, and extend also through a central opening 24 of the flexible seal 16 and through two orifices 26 of the main plate 15 of the frame 12.

The legs 22 are curved upwards so that their free upper end allows their articulation on sidewalls 28 of the frame 12 which extend perpendicular to the main plate 15 from its internal face 30. A rod 32 is introduced horizontally into holes 34 of the legs 22 and in corresponding holes 36 of the sides 28 to allow the rotatable mounting of the handle 18 on the housing 12, around of axis A1. The handle 18 is thus articulated substantially parallel to the upper edge 38 of the main plate 15, of the side of the internal face of the plate 15 thus articulated. The handle 18 can be operated from the outside, by the user between a rest position shown in particular in Figure 4 and an unlocked position shown in Figure 6 in which the gripping block 20 has tilted outwards and upwards around the axis A1.

The operating handle 18 is intended to cause the pivoting of a tilting movement return plate called thresher 40 which is rotatably mounted on the housing 12 by a substantially central portion, around a perpendicular axis A2 to the axis A1 of articulation of the handle 18.

The thresher 40 is made from a metal plate and it is articulated at the end of a stud 41 which extends substantially horizontally from the internal face 30 of the main plate 15 of the frame 12, at the level of the central part from its upper edge 38. The free end of the stud 41 is received in a central bore 43 of the thresher 40 which is held axially bearing against a radial collar of the stud 41 by a pin type system.

The thresher 40 acts as a movement reference arranged between the handle 18 and the linkage which controls the lock.

Indeed, one of the legs 22 of the handle 18 has a lever 42 which extends substantially horizontally towards inside, when the handle is in the rest position.

When the handle is maneuvered to its position of unlocking, the lever 42, which is arranged opposite the block of grip with respect to the axis A1, lowers downwards in a plane perpendicular to the axis A1, and is intended to cooperate with a first end 44 of the thresher 40 while the second end 46 of the thresher 40, opposite with respect to the axis A2, is intended to be connected to a rod or cable (not shown) to operate the lock.

In accordance with the teachings of the invention, the lever 42 does not cooperate directly with the first end 44 of the thresher 40 but via a transmission finger 48 of axis A5 which is mounted to slide, in a direction parallel to the axis A1 of articulation of the handle 18, in a light 49 arranged in the first end 44 of the thresher 40.

Transmission finger 48 extends from a rear face 47 of the thresher 40 and it is received in a light 49 thanks to a nipple 51 so as to be able to slide between an active position which is shown more particularly in FIGS. 3, 5 and 10 and a disengaged position which is shown in FIG. 7 and 11.

In the active position, the transmission finger 48 is arranged at plumb with lever 42 of handle 18 so that when the user lifts the gripping block 20 from the handle 18, the lever 42 is lowered by pivoting around the axis A1 to lean on the transmission finger 48 which, being stressed perpendicular to its sliding direction, causes the rotation of the thresher 40 about its axis A2 in order to allow unlocking the lock.

The transmission finger 48 has an upper face 45 cooperating with the lever 42 which is curved to facilitate the relative movement of the two parts which are articulated around orthogonal axes.

When the user releases the handle, springs of recall 50, 52 respectively bring back the handle 18 and the threshing machine 40 in their respective initial positions.

On the contrary, when the transmission finger 48 is in disengaged position, it is out of reach of lever 42 because it is then offset from the pivot plane of the lever 42 in its direction sliding, that is to say substantially in the direction of the axis A1 of articulation of the handle 18, to the left in considering the figures.

Alternatively, not shown, it is also possible to plan to offset the transmission finger 48 in the direction opposite, i.e. towards the central part of the thresher 40.

Thus, when the transmission finger 48 is in position disengaged, the operation of the handle 18 has no effect on the thresher 40 and therefore has no effect on the linkage in general and on the lock and it is not possible to damage the device.

In addition, and as can be seen particularly on the Figures 1, 7 and 10, the transmission finger 48 is then supported by a substantially planar lower face 54 on a surface of stop 56 which is substantially horizontal and which extends from the rear face 30 of the main plate 15.

The transmission finger 48 then being immobilized according to the vertical direction, down, and it's impossible to rotate the thresher 40 counterclockwise considering the figures, and it is therefore impossible to cause the lock to be unlocked, even if you succeed in insert a tool on the inside of the lock and if you try to operate the thresher 40.

Furthermore, the rest position of the thresher 40 is determined by a bearing surface 55 formed on the housing 12 and on which the thresher 40 is supported by its end section 46 opposite to that with finger 48.

The thresher 40 is therefore not liable to pivot in the clockwise considering the figures, beyond its position of rest, so that when the transmission finger 48 is in disengaged position, the movement of the thresher 40 is blocked in both directions around its axis of rotation A2.

According to a characteristic of the invention, the finger transmission 48 has a substantially vertical side face 58 which, when the finger 48 and the handle 18 are respectively in the disengaged and unlocked position, is arranged opposite a side face 59 of the lever 42 so as to prohibit the return of finger 48 to its active position. This provision avoids that the device 10 can be hooked in introducing a tool through one of the orifices 26 for passage of legs 22 of handle 18, holes which can be partially open when the handle is in the position unlocking.

We will now describe the control mechanism of the sliding of the transmission finger 48 between its positions active and disengaged.

In known manner, the locking device 10 is provided a rotary lock 60 of axis A3 whose main body 62 is mounted in a corresponding orifice formed in the housing, substantially in the center of the main plate 15, below the hinge stud 41 of the thresher 40, substantially in the center orifices 26 for passage of the legs 22.

The tubular main body 62 is thus mounted so that its rear end protrudes through the panel body to allow engagement of a key which, if it corresponds to this lock, allows the rotational drive of a rotor (not shown) of the lock 60, and of an output shaft 66 of axis A3 which protrudes at the front axial end 68 of the latch 60.

A return disc 70 is mounted integral in rotation on the output shaft 66 of the latch 60 and comprises, on a front face 72, a cylindrical pin 74 of axis A4 parallel to the axis A3 of the lock 60 but eccentric to it.

Preferably, the latch 60 is of the type in which the stroke maximum of the rotor is of the order of a quarter to a third of a turn and the pin 74 is arranged on the disc 70 so that, for both extreme positions of the rotor of latch 60, it occupies two positions symmetrical about a plane perpendicular to the axis A1 of articulation of the handle 18 passing through the axis A3 of the lock.

Thus, pawn 74 is likely to occupy two positions extremes shifted to the left and to the right around the axis A3 of rotation of the lock, considering the figures, but located substantially on the same horizontal level as the abutment surface horizontal 56 on which the transmission finger 48 rests in the disengaged position.

Furthermore, the transmission finger 48 comprises a rod 76 which extends substantially in the direction of the axis A1, which is made integrally with finger 48, and whose the free end is rotatably mounted on the cylindrical pin 74.

It is not necessary to provide for articulation between the connecting rod 76 and the transmission finger 48 because it is mounted turning in the light 49 of the thresher around an axis A5 parallel to the A4 axis of pin 74.

In this way, when the pawn 74 passes from an extreme position to the other under the effect of a rotation of the lock 60, the link 76 causes the transmission finger 48 to slide between its active and disengaged positions.

In the embodiment which is represented on the figures, and in particular as we can see in figure 1, it is also provided means to condemn the locking device without using the lock key 60.

It is known from the state of the art to provide such a locking device for remote control means of the condemnation of the device. These means generally include a electric actuator 78 controlled according to signals electrics managed by a control unit (not shown).

The electric actuator 78 which is shown in the figures is of the linear type and it is fixed on a plate 79 which is made integrally with the main plate 15 of the housing 12.

The actuator 78 essentially comprises a housing 79 and a control rod 80 movable in translation in a direction parallel to the axis A1 of articulation of the handle 18 between two positions whose spacing is substantially equal to the spacing of the two active and disengaged positions of the transmission finger.

The control rod 80 controls the rotation of the disc 70 connected to the lock rotor via a bar 82 which extends substantially parallel to the link 76 of the finger 48, below it, and which connects the free end of the rod 80 to a stud 84 which is formed on the front face 72 of the return disc 70, diametrically opposite the pin 74 which controls the movements of the transmission finger 48.

Claims (6)

1. Locking device for a motor-vehicle door, of the type including a manoeuvring member (18) for causing the unlocking of a lock of the door via a rod linkage, so as to allow the opening of the door, and of the type in which a securing lock (60) allows the manoeuvring member (18, 42) to be rendered inoperative, the rod linkage (40) including a moveable transmission finger (48) which is actuated by the securing lock (60) between an active position, in which it co-operates with the manoeuvring member (18, 42) to cause the unlocking of the lock, and a disengaged position in which it is no longer capable of co-operating with the manoeuvring member, and in which the transmission finger (48) co-operates with an abutment surface (56) of the locking device (10) to block all movement of the rod linkage in the direction of the unlocking of the lock, characterised in that the rod linkage includes a cam (40) on which the transmission finger (48) is mounted so as to slide in a direction substantially perpendicular to the direction of the movement of the cam (40) when the rod linkage is actuated by the manoeuvring member (18) in order to unlock the lock.
2. Locking device according to Claim 1, characterised in that the manoeuvring member (18) and the cam (40) are mounted articulated respectively about two perpendicular axes (A1, A2) on a chassis (12) of the device (10), in that the cam (40) extends substantially parallel to the axis of articulation (A1) of the manoeuvring member (18), in that the transmission finger (48) is mounted at a free end (44) of the cam (40) and is capable of sliding in the general direction of the cam (40) between its active position, in which it co-operates with a lever (42) of the manoeuvring member (18), and its disengaged position in which it co-operates with the abutment surface (56) of the chassis (12).
3. Locking device according to Claim 2, characterised in that the securing lock (60) is a rotary lock with axis (A3) parallel to the axis (A2) of articulation of the cam (40), and in that the lock (60) entrains in rotation about its axis (A3) an eccentric pin (74) which causes the displacement of the transmission finger (48) via a connecting rod (76) which is articulated on the pin (74).
4. Locking device according to Claim 3, characterised in that the connecting rod (76) is produced in one piece with the transmission finger (48).
5. Locking device according to any one of Claims 1 to 4, characterised in that the cam (40) is brought back elastically towards a rest position which corresponds to a locking position of the lock and in which it co-operates with a bearing surface (55) of the chassis (12) of the device (10), and in that in the disengaged position of the transmission finger (48) the cam (40) is immobilised in both directions about its axis of articulation (A2).
6. Device according to any one of the preceding claims, characterised in that when the transmission finger (48) is in the disengaged position and when the manoeuvring member (18) is brought into its position in which it causes the unlocking of the lock, the manoeuvring member (18) prevents the return of the finger (48) into its active position.

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