EP1312734A1 - Lock, in particular for motor vehicle door - Google Patents

Abstract

The main lock (3) has a latch (9) which is within a U shaped keep (13) in the closed position. With correct motor (25) operation a rod (23) enables the handle (29) to open the lock and door through a linkage (7) and rotating members (16,19). On motor failure a handle lock (32) permits the handle (29) to take an emergency position which is sufficient to release the latch even without the motor operated rod

Description

The present invention relates to a lock in particular for the door of a motor vehicle, and to a assembly comprising such a lock.

We know from the prior art a lock in particular for the door of a motor vehicle, of the type comprising locking means mounted to move between a locked position and an unlocked position, means for actuating said locking means mounted movable between a closed position and a open position, and mounted transmission means movable between a unlocking position allowing the tilting of said locking means of said locked position in said unlocked position under the effect of the passage of said actuation means of said closed position at said open position, and a locking position preventing said tilting under the effect of said passage.

In this type of lock, the movements of the means of transmission between the unlocking positions and conviction are conventionally provided by a motor electric whose operation is likely to be triggered by a remote control or "plip".

When the electric motor or its means of control fail, the means of transmission can be blocked in the locked position, in which case it is no longer possible to unlock the lock: it is therefore no longer possible to open the door on which this lock is mounted.

It is to prevent this type of situation that we generally provides means to be able to move manually the transmission means, in solution of help.

Conventionally, these manual means include a lock connected to the transmission means by a linkage, so that we can move these last means by introducing and rotating a key in said lock.

Although it does allow you to unlock the lock, these manual means require a linkage specific, thus introducing additional complexity whose manufacturing cost is high.

The object of the present invention is to remedy this disadvantage.

This object of the invention is achieved with a lock in particular for the door of a motor vehicle, of the type comprising locking means mounted to move between a locked position and an unlocked position, means for actuating said locking means mounted movable between a closed position and a open position, and mounted transmission means movable between a unlocking position allowing the tilting of said locking means of said locked position in said unlocked position under the effect of the passage of said actuation means of said closed position at said open position, and a locking position preventing said tilting under the effect of said passage, remarkable in that said actuation means are also movable up to a emergency position located beyond said position opening, said emergency position being provided for so that the passage of said actuating means of said opening position to said emergency position causes the tilting of said locking means of said position locked at said position unlocked even when said transmission means are in said locking position.

Thanks to these characteristics, when the means of transmission are in the locked position, can unlock the lock simply by increasing the normal stroke of the actuating means.

Unlocking the lock therefore does not require more to bring the transmission means back to the position of unlocking, which overcomes a expensive and complex linkage to manufacture.

• lesdits moyens de verrouillage comprennent un pêne et un cliquet montés pivotants entre une position verrouillée dans laquelle ledit cliquet empêche la rotation dudit pêne, et une position déverrouillée dans laquelle ledit cliquet autorise la rotation dudit pêne,
• lesdits moyens d'actionnement comprennent un levier monté pivotant entre une position de fermeture, une position d'ouverture et une position de secours,
• lesdits moyens de transmission comprennent une biellette mobile entre une position de décondamnation où elle est interposée entre lesdits moyens de verrouillage et lesdits moyens d'actionnement, et une position de condamnation où elle est située à l'écart desdits moyens,
• ladite serrure comprend des moyens électriques pour mouvoir lesdits moyens de transmission entre lesdites positions de décondamnation et de condamnation.

According to other characteristics of the lock according to the invention:

• said locking means comprise a bolt and a pawl pivotally mounted between a locked position in which said pawl prevents the rotation of said bolt, and an unlocked position in which said pawl authorizes rotation of said bolt,
• said actuating means comprise a lever pivotally mounted between a closed position, an open position and an emergency position,
• said transmission means comprise a rod movable between a unlocking position where it is interposed between said locking means and said actuation means, and a locking position where it is located away from said means,
• said lock comprises electrical means for moving said transmission means between said unlocking and locking positions.

The present invention also relates to a device for controlling a lock in accordance with precedes, remarkable in that it includes means of control of said movable actuation means between a closed position, an open position and a emergency position located beyond said position opening, and movable locking means between a locked position in which they prevent the passage of said means for controlling said position opening to said emergency position, and a position unlocked in which they allow this passage.

According to other characteristics of this device, said control means comprise a handle mounted swivel between a closed position, a position opening and an emergency position.

The present invention also relates to a lock assembly in particular for vehicle door automobile, remarkable in that it includes a lock in accordance with the above, a control device in accordance with the above, and a linkage interposed between said control means and said means actuation so that the passage of said means of control from said closed position to said position opening and from said opening position to said emergency position respectively has the effect of pass said actuating means from said position of closing at said open position, and from said open position in said emergency position.

• la figure 1 est une vue schématique d'un ensemble de serrure selon l'invention en position de fermeture, dans laquelle la serrure est verrouillée de manière à immobiliser une gâche et à empêcher ainsi l'ouverture d'une portière de véhicule automobile,
• la figure 2 est une vue analogue de cet ensemble en position d'ouverture décondamnée, permettant le déverrouillage de la serrure et la libération de la gâche, et donc l'ouverture de la portière,
• la figure 3 est une vue analogue de cet ensemble en position d'ouverture condamnée, ne permettant pas le déverrouillage de la serrure et empêchant donc l'ouverture de la portière, et
• la figure 4 est une vue analogue de cet ensemble en position de secours, permettant le déverrouillage de la serrure et donc l'ouverture de ladite portière.

Other characteristics and advantages of the present invention will appear on reading the description which follows and on examining the appended drawing, in which:

• FIG. 1 is a schematic view of a lock assembly according to the invention in the closed position, in which the lock is locked so as to immobilize a keeper and thus prevent the opening of a door of a motor vehicle,
• FIG. 2 is a similar view of this assembly in the unlocked open position, allowing the unlocking of the lock and the release of the striker, and therefore the opening of the door,
• FIG. 3 is a similar view of this assembly in the locked open position, not allowing the unlocking of the lock and therefore preventing the door from being opened, and
• Figure 4 is a similar view of this assembly in the emergency position, allowing the unlocking of the lock and therefore the opening of said door.

We now refer to Figure 1, on which we see that the lock assembly 1 according to the invention includes a lock 3 properly speaking, a device control 5, and connecting means such as a linkage 7 interposed between this lock and this device.

This lock assembly can be mounted for example on a door 8 of a motor vehicle, so that cooperate with a strike wire 9 fixed to the frame 11 of this vehicle.

The lock 3 comprises a bolt 13 for example in the form of U intended to cooperate with the strike wire 9.

This bolt 13 is mounted pivoting about an axis 15 between a locked position visible in Figures 1 and 3 allowing the door 8 to be blocked relative to the chassis 11, and an unlocked position visible on the Figures 2 and 4 authorizing the opening of this door.

The lock 3 also includes a pawl 16 mounted pivoting around an axis 17 between a locked position visible in Figures 1 and 3 preventing rotation of the bolt 13 and an unlocked position visible on the Figures 2 and 4 authorizing the rotation of this bolt.

Lock 3 also includes a lever actuator 19 mounted pivoting about an axis 21 between a closed position visible in Figure 1 and a open position visible in Figures 2 and 3. On these last figures, the closed position of the lever is shown by a broken line.

This lever 19 is further movable to a position relief visible in Figure 4, located beyond the open position. In this last figure, the lever open position is materialized by a dashed line.

The lock 3 also includes a connecting rod transmission 23 mobile between a position of unlocking visible in Figures 1 and 2, in which this link is interposed between the ratchet 17 and lever 19, and a position of visible condemnation in FIGS. 3 and 4, in which this link is located away from this ratchet and this lever.

The rod 23 is connected to an electric motor 25 by a rod 27, allowing this rod to move between its unlocking and condemnation positions.

The control device 5 comprises a handle of control 29 pivotally mounted around an axis 31 between a closed position visible in Figure 1 and a open position visible in Figures 2 and 3.

This control handle 29 is also movable to an emergency position visible in Figure 4.

The control device 5 also includes a key lock 32 movable between a locked position visible in Figures 1 to 3 in which it prevents the passage of the control handle 29 from its position opening to its emergency position, and a position unlocked visible in Figure 4 in which it authorize this passage.

The linkage 7 is mounted on the one hand on the lever actuation 19 and on the other hand on the command 29.

The mode of operation and the advantages of the lock assembly according to the invention results directly from the above description.

We will first assume that the motor 25 has placed the rod 23 in its unlocked position visible in Figures 1 and 2, for example following reception of a signal from a remote control or "plip".

In this case, the passage of the handle 29, under the action of an operator, from its closed position shown in Figure 1 in its open position shown in Figure 2 has the effect of passing the lever 19 from its closed position to its position opening via the linkage 7, which has the effect of moving the pawl 16 from its position locked in its unlocked position by through the link 23, which finally has for effect of tilting the bolt 13 from its position locked in its unlocked position.

The strike wire 9 is no longer retained by the bolt 13, and it becomes possible to open the door 8.

We will assume in a second step that the motor 25 placed the rod 23 in its locking position visible in Figures 3 and 4.

In this case, the fact that the link 23 is not interposed between the lever 19 and the pawl 16, the passage of the handle 29 from its closed position to its position no longer allows to request the pawl 16, as can be seen in figure 3: the stroke of the lever 19 corresponding to this passage is indeed too low.

If, despite everything, we really want to open the door 8, the lock 32 can be unlocked using a key, and thus bring it into the position visible in FIG. 4.

We can then bring the handle 29 to its emergency position visible in this same figure, which allows, via the linkage 7, to bring lever 19 to its visible emergency position also on this same figure.

Thanks to the additional travel thus covered by lever 19, the latter can pass the pawl 16 from its locked position to its unlocked position, thus authorizing the opening of the door 8.

As we can understand now, when the transmission rod 23 is in position conviction, in particular due to an engine failure 25, you can unlock the lock 3 simply by increasing the normal stroke of the actuating lever 19.

It is therefore no longer necessary to resort to a specific linkage to actuate the rod 23 in engine failure 25, unlike the technique earlier.

We can thus obtain a set of locks whose emergency opening means are considerably simplified, which allows them manufacture at low cost.

It will also be noted that the absence of linkage specific to actuate the rod 23 saves space inside door 8, which is particularly advantageous for the passage of a window, and allows to reduce the imposed shape constraints both to this window and to the lock assembly.

Of course, the present invention is not limited to the embodiment described and shown, supplied to illustrative and non-limiting example.

Claims (8)

Lock (3) in particular for a door (8) of a motor vehicle, of the type comprising locking means (13, 16) mounted movable between a locked position and an unlocked position, actuation means (19) of said locking means ( 13, 16) mounted movable between a closed position and an open position, and transmission means (23) mounted movable between a unlocking position allowing the tilting of said locking means (13, 16) from said locked position to said unlocked position under the effect of the passage of said actuating means (19) from said closed position to said open position, and a locking position preventing said tilting under the effect of said passage, characterized in that said means actuator (19) are further movable to an emergency position located beyond said open position, said emergency position being provided in a manner e that the passage of said actuating means (19) from said open position to said emergency position causes tilting of said locking means (13, 16) from said locked position to said unlocked position even when said transmission means ( 23) are in said locking position. Lock (3) according to claim 1, characterized in that said locking means comprise a bolt (13) and a pawl (16) pivotally mounted between a locked position in which said pawl (16) prevents rotation of said bolt (13) , and an unlocked position in which said pawl (16) authorizes the rotation of said bolt (13). Lock (3) according to one of claims 1 or 2, characterized in that said actuating means comprise a lever (19) pivotally mounted between a closed position, an open position and an emergency position. Lock (3) according to any one of the preceding claims, characterized in that the said transmission means comprise a connecting rod (23) movable between a unlocking position where it is interposed between the said locking means (13, 16) and the said means actuation (19), and a locking position where it is located away from said means (13, 16). Lock (3) according to any one of the preceding claims, characterized in that it comprises electrical means (25) for moving said transmission means (23) between said unlocking and locking positions. Control device (5) for a lock (3) according to any one of the preceding claims, characterized in that it comprises control means (29) of said actuation means (19) movable between a position of closed, an open position and an emergency position located beyond said open position, and locking means (32) movable between a locked position in which they prevent the passage of said control means (29) said open position to said emergency position, and an unlocked position in which they allow this passage. Control device (5) according to claim 6, characterized in that said control means comprise a handle (29) pivotally mounted between a closed position, an open position and an emergency position. Lock assembly (1) in particular for the door of a motor vehicle, characterized in that it comprises a lock (3) according to any one of Claims 1 to 5, a control device (5) according to one of claims 6 or 7, and a linkage (7) interposed between said control means (29) and said actuation means (19) so that the passage of said control means (29) from said closed position to said position d opening and from said open position to said emergency position has the effect respectively of passing said actuating means (19) from said closed position to said open position, and from said open position to said emergency position.

Images