FR3055346A1 - LOCK OF A VEHICLE - Google Patents

Abstract

The invention relates to a lock (7) for a locking device (1) of an opening of a vehicle, characterized in that it comprises: - a locking mechanism, operable between a locking position, in which the opening (2) is locked, and an unlocking position, in which the opening can be opened, - a locknut (7), allowing access to the locking mechanism to actuate it, and - a device self-protection device, having closure means, movable between an open position, in which they allow access to the lock nut, and a closed position, in which they prevent access to the nut lock, the self-protection device further comprising elastic return means, the elastic return means being arranged to bias the closure means to the closed position.

Description

Holder (s): PEUGEOT CITROEN AUTOMOBILES SA Société anonyme.

Extension request (s)

Agent (s): PEUGEOT CITROEN AUTOMOBILES SA Public limited company.

FR 3 055 346 - A1 (54) LOCK OF A VEHICLE.

©) The invention relates to a lock (7) for a locking device (1) of a door leaf of a vehicle, characterized in that it comprises:

- a locking mechanism, operable between a locking position, in which the opening (2) is locked, and an unlocking position, in which the opening can be opened,

- a lock nut (7), providing access to the locking mechanism for actuating it, and

- a self-protection device, comprising shutter means, movable between an open position, in which they allow access to the lock nut, and a closed position, in which they prevent access with the lock nut, the self-protection device further comprising elastic return means, the elastic return means being arranged to urge the closing means towards the closed position.

VEHICLE LOCK

The present invention relates to a lock for a device for locking an opening leaf, such as a side door of a motor vehicle.

A locking device generally comprises a lock, a lock, and a control rod, called a "lock train".

The lock is accessible from the outside of the door, and is intended to be actuated using a key.

The lock is housed inside the door and is adapted to control the movement and ensure the locking of a bolt capable of entering a keeper secured to the door frame (locking position), or out (unlocking position).

The bolt train is arranged along a horizontal axis transverse to the external face of the door, and provides the kinematic connection between the bolt and the lock.

The lock train is generally located at one of the two lower corners of the opening of the door which receives a sliding window.

The rim framing the window opening is provided, on the outside, with a flexible seal, made of elastomer material, usually called a wiper, of which a lip is applied against the outside face of the window.

One of the fairly common methods used by thieves to open the door is, after removing the wiper, to insert a tool, such as a screwdriver, between the glass and the door, in order to access the ream of lock.

It is thus possible to break the lock train, which then disengages from the lock and falls to the bottom of the door.

The insertion of a second tool, such as a bent rod, then allows access to the lock, via the lock nut, so as to retract the bolt and, thus, to open the door.

To overcome this problem, the document FR3000760 proposes to mount a protective cover above the lock train, in order to prevent direct access of the tool to the lock train.

However, the hood must have a specific shape and configuration for each door model, and this shape is different for the left and right sides, which results in delicate and costly inventory management.

In addition, the cover has a volume which increases the minimum distance between the latch and the lock, and can pose mounting difficulties.

In addition, the cover can be damaged fairly easily, and the break-in therefore remains possible, even if it takes longer to achieve.

There is therefore a need for locks making it possible to prevent a break-in while avoiding the drawbacks mentioned above.

The present invention improves the situation.

To this end, the invention provides a lock for a device for locking a door leaf of a vehicle, characterized in that it comprises:

a locking mechanism, operable between a locking position, in which the opening is locked, and an unlocking position, in which the opening can be opened, a lock nut, allowing access to the locking mechanism for the 'actuate, and a self-protection device, comprising closure means, movable between an open position, in which they allow access to the lock nut, and a closed position, in which they prevent access to the lock nut, the self-protection device further comprising elastic return means, the elastic return means being arranged to urge the closure means towards the closed position.

According to a first embodiment of the invention, the sealing means comprise a set of plates of generally triangular shape, one side of each plate being fixed along the periphery of the lock nut, so as to be movable in rotation around a transverse horizontal axis passing through the center of said side.

According to a second embodiment of the invention, the sealing means comprise two panels, which extend from two opposite zones of the periphery of the lock nut.

According to a third embodiment of the invention, the closure means comprise a flap, the elastic return means comprising a hinge.

The invention also provides a device for locking a door leaf of a vehicle, characterized in that it comprises a lock, a lock as described above, and a lock train extending from the lock into the lock nut. , the shutter means being in the open position.

Other characteristics and advantages of the invention will become apparent on reading the description which follows. This is purely illustrative and should be read in conjunction with the accompanying drawings in which:

Figures 1 and 2 are partial perspective views of a locking device of a side door of a vehicle;

Figures 3 and 4 are schematic views of a device for self-protection of the lock of the locking device according to a first embodiment of the invention;

Figures 5 and 6 are schematic views of a device for self-protection of the lock of the locking device according to a second embodiment of the invention; and Figure 7 is a schematic view of a device for self-protection of the lock of the locking device according to a third embodiment of the invention.

Figures 1 and 2 show a locking device 1 of an opening 2, such as a side door of a motor vehicle.

The space outside the vehicle is designated E. Its interior space is designated by I.

The locking device 1 comprises a lock 3.

The lock 3 is housed in a support piece 4, called a “stirrup”. The stirrup 4 also receives the handle 5 of the door 2.

The lock 3 comprises a barrel 6, which is accessible from the external face of the door 2, to be actuated by an appropriate key (not shown).

The locking device 1 also comprises a lock 7.

The lock 7 is housed inside the door 2, and contains a locking mechanism (not shown) of a type known per se.

The locking mechanism is operable to allow the movement of a bolt (not shown) to be controlled between a locking position, in which the door 2 is locked by the penetration of the bolt into a keeper secured to the frame of the door 2 , and an unlocking position, in which the bolt is released from the striker and releases the door 2 to allow its opening

The lock 7 also includes a lock nut 8, which provides access to the locking mechanism, to allow its actuation between the locking position and the unlocking position.

The locking device 1 further comprises a control rod 9, called a "lock train".

The lock train 9 is arranged along a horizontal axis transverse with respect to the external face of the door 2, between the lock 3 and the lock 7.

The bolt train 9 can rotate on itself, around its longitudinal axis.

The function of the bolt train 9 is to provide the kinematic connection between the bolt 3 and the lock 7, by transmitting to the locking mechanism the rotary movement of the barrel 6.

The lock is described in more detail below.

The lock 7 comprises a self-protection device 10, movable between an open position (Figures 3 and 5), in which it allows access to the lock nut 8, therefore to the locking mechanism, and a position closure (Figures 4, 6 and 7), in which it prevents access to the lock nut 8.

The self-protection device 10 comprises shutter means 11, arranged to allow the shutter of the lock nut 8 to be closed.

The self-protection device 10 also comprises elastic return means 12, capable of urging the shutter means 11 towards the closed position, in the mounting position of the lock 7.

Figures 3 and 4 show a first embodiment of the self-protection device 10.

Here, the plates.

sealing means 11 comprise a set of

Each plate 11 has a generally triangular, rounded sides.

example one of the triangle shape being

One side of each plate 11 is fixed along the periphery of the lock nut 8, movably in rotation about a transverse horizontal axis passing through the center of said side.

In the open position, the free tops of the plates 11 are sufficiently spaced to allow access to the lock nut 8, and, in the closed position, the free tops of the plates 11 meet to close the lock nut 8.

The elastic return means (not visible) are capable of requesting a rotation of each plate 11 towards the closed position.

Figures 5 and 6 show a second embodiment of the self-protection device 10.

Here, the shutter means 11 comprise a flap, which for example has a rectangular shape.

The elastic return means 12 comprise a hinge, which makes it possible to fix the flap 11 to the lock 7, near the lock nut 8.

The hinge 12 urges the flap 11 towards the closed position, in which the flap 11 closes the lock nut 8.

FIG. 8 represents a third embodiment of the self-protection device 10.

Here, the shutter means 11 comprise two panels, which extend from two opposite zones of the periphery of the lock nut 8.

The elastic return means (not visible) are capable of urging the panels 11 towards one another, so as to close the lock nut 8.

The assembly and operation of the locking device 1 are described below.

Initially, the lock 7 is for example unarmed, that is to say that the locking device 1 is in the open position.

During assembly of the locking device 1, the bolt train 9 is introduced into the lock nut 8 and the self-protection device 10 is armed.

In this state, the shutter means 11 are urged towards the closed position by the elastic return means 12, but the bolt train 9, which is inserted in the lock nut 8, maintains the shutter means 11 in the open position.

The locking mechanism 1 is therefore accessible, via the lock nut 8, when a person inserts the appropriate key into the lock 3 and mechanically actuates the lock ream 9, by rotating the key. The lock 7 can thus be unlocked, which allows the door 2 to be opened.

On the other hand, during an attempt housebreaking, if a nobody manages to reach the oar lock 9, and to the break the oar lock 9 falls into the bottom of the door 2. In that case, the lock train 9 don't maintain more the

self-protection device 10 in the open position, and the closure means 11, urged by the elastic return means 12, block access to the lock nut 8.

As a result, the locking mechanism 1 cannot be reached, and the door 2 cannot be unlocked.

The invention thus makes it possible to prevent a break-in, even in the case where the bolt train 9 has been broken.

In addition, the invention avoids having to have different parts, in particular calipers, for the different vehicles, which facilitates inventory management, and therefore the cost.

Furthermore, the minimum distance between the lock and the lock can be reduced, which ease mounting and Aesthetics. 15 Of course, the present invention is not not limited at

embodiment described and shown above by way of example; other embodiments can be devised by a person skilled in the art without departing from the scope and scope of the present invention.

Claims (6)

1. Lock (7) for a locking device (1) of a door leaf of a vehicle, characterized in that it comprises: a locking mechanism, operable between a locking position, in which the opening (2) is locked, and an unlocking position, in which the opening can be opened, a lock nut (7), allowing access the locking mechanism for actuating it, and a self-protection device (10), comprising shutter means (11), movable between an open position, in which they allow access to the nut lock, and a closed position, in which they prevent access to the lock nut, the self-protection device further comprising elastic return means (12), the elastic return means being arranged to urge the closing means towards the closed position. 2. Lock according to claim 1, characterized in that the closure means (11) comprise a set of plates of generally triangular shape, one side of each plate being fixed along the periphery of the lock nut, so movable in rotation about a transverse horizontal axis passing through the center of said side. 3. Lock according to claim 1, characterized in that the closure means (11) comprise two panels, which extend from two opposite zones of the periphery of the lock nut. 4. Lock according to claim 1, characterized in that the closure means (it) comprise a flap, the elastic return means comprising a hinge. 5. Locking device (1) of a door leaf of a vehicle, characterized in that it comprises a lock, a lock according to any one of claims 1 to 4, and a lock train extending from the lock in the nut 10 lock, the closure means being in the open position.