WO2012031749A1

WO2012031749A1 - Bolt lock for a motor vehicle lock system

Info

Publication number: WO2012031749A1
Application number: PCT/EP2011/004499
Authority: WO
Inventors: Ludovic Fenayon
Original assignee: Valeo Securite Habitacle
Priority date: 2010-09-09
Filing date: 2011-09-07
Publication date: 2012-03-15
Also published as: CN103370486A; CN103370486B; EP2614201B1; JP2013540919A; FR2964688B1; EP2614201A1; FR2964688A1; JP5992415B2

Abstract

The invention relates to a bolt to be inserted and fixed in a receiving body (1) of a motor vehicle, comprising: a stator (2) containing a rotor (4) that can rotate, said stator (3) including a means for securing same to the receiving body (1); a rotor cover plate (10) secured to the front face of the stator (3), said cover plate (10) including an opening (14) for the passage of a key that can co-operate with the rotor (4); and an anti-pull-out means borne by the cover plate (10) and the stator (3) in order to secure the cover plate (10) to the stator (3) and axially retain the rotor in the stator (3). According to the invention, the anti-pull-out means is configured to lock the cover plate (10) axially on the stator (3) by positioning the cover plate (10) on the stator (3) and subsequently pivoting same thereon into an assembled position, and the lock includes an element (15) for preventing the rotation of the cover plate (10) on the stator (3), formed by a part positioned between the cover plate (10) and the front face of the stator (3).

Description

LATCH FOR VEHICLE LATCH SYSTEM

AUTOMOBILE

The invention relates to a lock for a motor vehicle locking system. More particularly, the invention relates to a rotary electrical switch lock for a motor vehicle lock, but can also be applied to any lock for a motor vehicle.

Such a lock intended to be inserted and fixed in a motor vehicle receiving body comprises:

a stator inside which a rotor is able to be rotatable, when the key conforming to the latch is inserted in such a manner as to unlock the locking system of the motor vehicle, said stator comprising a means of attachment to said body; immobilizer,

a rotor cover fixed on the front face of said stator, said cover having an opening for the passage of the key capable of cooperating with said rotor,

- Anti-tearing means carried by said cover and said stator to fix said cover to said stator and axially retain said rotor in said stator.

It is known to maintain the cover at the front of the lock stator by a crimping located at the rear of the cover, to ensure the integrity of the lock, especially in case of tearing or sinking of the rotor.

However, another means is sought for securing the lock to the antitheft body to reduce the costs incurred by the crimping step while improving the integrity of the lock. The present invention aims to remedy this problem by proposing a lock intended to be inserted and fixed in a receiving body of a motor vehicle comprising:

a stator inside which a rotor is able to be rotatable, said stator (3) comprising a means of attachment to said receiving body,

a rotor cover fixed on the front face of said stator, said cover having an opening for the passage of a key capable of cooperating with said rotor,

an anti-tearing means carried by said cover and said stator for securing said cover to said stator and axially retaining said rotor in said stator;

characterized in that said anti-tearing means is configured to axially lock said cover on said stator by positioning said cover on said stator and its subsequent pivoting on said stator to an assembled position and in that it comprises a locking element in rotation of said cover on said stator consisting of a part interposed between the cover and the front face of the stator.

The cover can thus be mounted manually on the stator so that the assembly does not require any specific tool or mounting station. This results in a significant decrease in production and assembly costs.

According to a preferred embodiment, said piece comprises means for securing in rotation with the front face of said stator and means for locking in rotation said active cover in said assembled position.

Preferably, said locking means consists of at least one resilient tab inclined in the rest position and intended to cooperate with each other. each with a groove carried by the rear face of said cover, in said assembled position.

Preferably, said securing means consists of at least one longitudinal interlocking groove with a rib carried by the front face of the stator.

Advantageously, said part forms an intermediate rotor cover, in the form of an open-bottomed cup, and comprises a peripheral annular flange comprising at least one resilient lug inclined forwardly in the rest position, forming said locking means, and intended for each cooperate with a groove carried by the rear face of said cover, in said assembled position.

Advantageously, said annular flange of said intermediate cover comprises at least one said longitudinal interlocking groove with a rib carried by the front face of the stator, forming said securing means.

Said piece may be steel.

Preferably, said cover is fixed to said stator by a bayonet mounting forming said anti-tearing means for axially retaining said rotor in said stator.

Advantageously, the stator has a rib of general plane perpendicular to the longitudinal axis of the lock and the cover has a corresponding bayonet mounting hook.

The latch may further include a longitudinal play retrofit member of said cover on said stator.

Said play-catching element may have a generally strip-like shape and comprises means for assembling said stator and said cover.

Said catch-up element may have a longitudinal tab abutting against said cover. Said catch-up element may be made of plastic.

The invention is described below in more detail with the aid of figures representing a preferred embodiment of the invention.

Figures 1A to 1D are perspective views of a lock according to the invention.

Figure 2 is a perspective view of a lock and a lock body according to the invention.

Figure 3 is a side view of a lock according to the invention.

Figures 4A and 4B are sectional views along the plane III-III. FIGS. 5A and 5B are views of front detail and in section along V-V, of a lock according to the invention.

In all the figures, the identical elements bear the same reference numbers. The front face of the lock is designated by the end of the lock accessible by the user from outside the motor vehicle.

Figures 1, 2 and 3 illustrate an insert lockable lock, intended to be mounted in a motor vehicle to secure the direction. The antitheft device comprises a receiving body, 1, which is an antitheft body according to the illustrated embodiment, having a first portion in which are integrated locking means for blocking a movable element of the direction (not visible) . The antitheft body 1 is also provided with a second portion inside which a latch 2 is intended to be inserted and secured. The latch 2 comprises a stator 3 inside which a rotor 4 is mounted to control the implementation of the locking means, via a connecting element (not shown). The connecting element has a shaped end so as to be able to fit into a cavity corresponding to the rear of the latch 2 and thus cooperate by driving with the rotor part 4 of the latch 2.

The rotor 4 is able to be rotatable along the longitudinal axis II inside the stator 3 when the key according to the latch 2 is inserted into the rotor 4 by the keyway 6 provided at the front end. of the rotor 4, so as to unlock the locking system of the motor vehicle.

It will be understood that, throughout the text, the term "rotor" designates very generally any subassembly comprising a rotor body through which radial slots are formed capable of receiving flakes which are assembled in radial translation and which are coupled to return springs permanently driving them into protruding positions with respect to the rotor body.

The latch stator 3 furthermore has a fastening means to the antitheft body 1, for securing the latch 2 with the antitheft body 1. According to an exemplary embodiment shown, this fastening means has an elastic stud 8, for spring-loaded example, implanted on the surface of the stator 3 of the latch 2, cooperating with a corresponding orifice 9, of substantially complementary shape to the stud 8, formed inside the second portion of the antitheft body 1.

The latch 2 comprises a cover 10 intended to be fixed on the front face of the stator 3. The cover 10 has a circular opening 14 to make accessible the key inlet 6 formed at the front end of the rotor 4. The cover 10 is made in a material resistant to tearing, for example Zamak type material, Zamak being an alloy based on zinc, aluminum and magnesium with sometimes copper.

The latch 2 is located in the antitheft body 1 so that the keyway 6 is accessible from outside the motor vehicle. The latch 2 comprises an anti-tearing means carried by the cover 10 and the stator 3 to fix the cover 10 to the stator 3 and axially retain the rotor 4 in the stator 3. The presence of anti-tearing means is essential to ensure the integrity of the rotor 4 of the lock 2, in particular with respect to any attempted break-in by tearing or breaking the rotor 4.

The anti-tearing means is configured to axially block the cover 10 on the stator 3 by positioning the cover 10 on the stator 3 and its subsequent pivoting on said stator 3 in the assembled position shown in Figure 1D. The assembly can thus be performed manually so that no specific tool or mounting station is necessary. This results in a significant decrease in production and assembly costs.

The insertion of the latch 2 in the antitheft body 1 then permanently locks the rotation of the cover 10. For this purpose, the antitheft body 1 comprises an anti-unscrewing means of the cover 10 on the stator 3.

According to the preferred embodiment, the cover 10 is fixed to the stator 3 by a bayonet type mounting, that is to say that the cover 10 is placed on the stator 3 and is pivoted to be retained in axial locking position . The bayonet mounting forms a means of anti-tearing, able to block, in axial translation, the rotor 4 inside the stator 3 when the latch 2 is fixed inside the lock 1. The holding of the lock facing the Depression or tearing of the rotor is thus increased by the bayonet type mounting which allows a better resistance to tearing.

According to a preferred embodiment, the stator 3 has a rib 22 of general plane perpendicular to the longitudinal axis II and the edge of the cover 10 has a corresponding hook 23. The hook 23 cooperates with the rib 22 to axially retain the cover 10 . Furthermore, the cover comprises a longitudinal rib 24 anti-unwinding intended to cooperate with a housing 32 formed near the mouth of the body of the lock 1.

The latch 2 further comprises a longitudinal play compensator 15 made of plastic. This play-catching element makes it possible to make up any games that may exist between the cover 10 and the latch stator 3 and thus eliminate the noise caused by a relative movement between the cover 10 and the stator 3 during the transport of the lock 2 on the vehicle assembly line and once mounted in the lock. The play-catching element 15 has, for example, a generally strip-like shape and comprises means of assembly to the stator 3.

The play-catching element 15 may be snap-fastened to the latch stator 3. It comprises an elastic bridge 18, for example, formed by a curved strip, to make up for the play tolerances, a longitudinal lug 16 carried by this element abutting against the cache.

According to the invention, the lock also comprises means for locking the cover 10 in rotation, consisting of a part 30 interposed between the cover 10 and the front face of the stator 3.

According to the illustrated embodiment, this piece 30 and cup-shaped open bottom and constitutes an intermediate cover visible in Figures 1A and 1B is shown alone in Figures 5A and 5B. This piece 30 then also has a tamper-proof function of the rotor, in addition to its locking function in rotation of the cover 10, with its open front wall or open bottom 30A which partially covers the front face of the rotor.

This intermediate cap 30 of cylindrical shape and advantageously made of steel, possibly stainless, comprises means for securing in rotation with the front face of the stator 3 and a means for blocking the active cover 10 in rotation in the assembled position shown in FIGS. 1D and 3.

The intermediate cover comprises a peripheral annular flange 31 comprising at least one resilient lug forward 32, 33 in the rest position, forming this locking means, and intended to cooperate with grooves 10A, 10B visible in FIGS. 4B and carried by the rear face of the cover 10, in said assembled position. According to the example shown, these tabs are two in number and the corresponding grooves.

The annular flange 31 of the intermediate cover comprises at least one groove, here two grooves 34, 35, longitudinal interlocking with a rib, here two ribs 36, 37, carried (es) by the front face of the stator, forming the means of joining.

The assembly of a lock 2 according to the invention is carried out as follows.

As illustrated in Figures 1A and 1B, the intermediate cover 30 is disposed on the front face of the stator 3, by interlocking ribs 36, 37 of the latter in the grooves 34, 35 carried by the intermediate cover. In this position, the elastic tabs 32, 33 are in the rest position, inclined forwardly.

The cover 10 is then applied to this intermediate cover 30, as illustrated in FIG. 1C, the resilient tabs 32, 33 being compressed and biased in non-inclined position as illustrated in FIG. 4A and the hook 23 of the cover 10 being arranged opposite of the rib 22 of the stator 3.

The cover is finally pivoted to engage the hook 23 on the rib 22, as shown in Figure 1D where the latch is in the assembled position. The elastic tabs 32, 33 of the intermediate cover 30 are then released in inclined position in the ribs 10A, 10B of the cover 10, blocking the latter in rotation. This assembled lock can then be inserted into the lock body 1 shown in Figure 2 where the rotation of the cover 10 is locked permanently by interlocking the longitudinal rib 24 anti-unwinding of the cover in the housing 32 of the lock body.

A preferred embodiment of the invention is described above, but the invention also encompasses other embodiments of the cache rotational locking member.

The inviolability function can be provided only by the cover 10 and the part 30 be of semi-cylindrical shape. This piece can then be devoid of front wall 30A.

It may even be devoid of a peripheral annular flange 31, and consist of a simple cylindrical crown. Said locking means may then consist of at least one elastic tab inclined on and with respect to the cylindrical wall of this part, in the rest position, and intended to cooperate each with a radial groove carried by the rear face of said cover, in said assembled position. Similarly, said securing means may then always consist of at least one longitudinal interlocking groove, arranged at the end of this cylindrical wall, with a rib carried by the front face of the stator, forming said securing means. In this case, the piece does not play a shielding role, it can be plastic.

In general, said locking means consists of at least one resilient tab inclined in the rest position and intended to cooperate each with a groove carried by the rear face of said cover (10), in said assembled position. And said securing means is constituted by at least one longitudinal interlocking groove with a rib carried by the front face of the stator (3), forming said securing means.

Claims

A lock for insertion and attachment in a receiving body (1) of a motor vehicle comprising:

a stator (3) inside which a rotor (4) is able to be rotated, said stator (3) comprising a means of attachment to said receiving body (1),

a cover (10) of the rotor (4) fixed on the front face of said stator (3), said cover (10) having an opening (14) for the passage of a key capable of cooperating with said rotor (4),

an anti-tearing means carried by said cover (10) and said stator (3) for fixing said cover (10) to said stator (3) and axially retaining said rotor (4) in said stator (3),

characterized in that said anti-tearing means is configured to axially lock said cover (10) on said stator (3) by positioning said cover (10) on said stator (3) and its subsequent pivoting on said stator (3) towards an assembled position and in that it comprises a rotational locking element (15) of said cover (10) on said stator (3) consisting of a part inserted between the cover (10) and the front face of the stator (3). ).

2. Lock according to the preceding claim, characterized in that said piece (30) comprises means for securing in rotation with the front face of said stator (3) and a means for locking in rotation said active cover (10) in said assembled position. .

3. Lock according to the preceding claim, characterized in that said locking means is constituted by at least one elastic tab inclined in the rest position and intended to cooperate each with a groove (10A, 10B) carried by the rear face of said cover (10), in said assembled position.

4. Lock according to claim 2 or 3, characterized in that said securing means consists of at least one longitudinal interlocking groove (34, 35) with a rib (36, 37) carried by the front face of the stator (3).

5. Lock according to one of claims 2 to 4, characterized in that said part (30) constitutes an intermediate cap of the rotor, in the form of a cup, and comprises a peripheral annular flange (31) comprising at least one inclined elastic tab (32, 33) forwards in the rest position, forming said locking means, and intended to cooperate each with a groove (10A, 10B) carried by the rear face of said cover (10), in said assembled position.

6. Lock according to the preceding claim, characterized in that said annular flange (31) of said intermediate cover comprises at least one said longitudinal interlocking groove (34, 35) with a rib (36, 37) carried by the front face of the stator (3) forming said securing means.

7. Lock according to one of the preceding claims, characterized in that said piece is steel.

8. Lock according to one of the preceding claims, characterized in that said cover (10) is fixed to said stator (3) by a bayonet mounting forming said anti-tearing means for axially retaining said rotor (4) in said stator (3). ).

9. Lock according to the preceding claim, characterized in that the stator (3) has a rib (22) of general plane perpendicular to the longitudinal axis of the latch and the cover (10) has a corresponding bayonet mounting hook.

10. Lock according to one of the preceding claims, characterized in that it further comprises a longitudinal play compensating element (15) of said cover (10) on said stator (3).

11. Lock according to the preceding claim, characterized in that said clearance element (15) has a generally strip-like shape and comprises means for assembling said stator (3) and said cover (10).

12. A latch according to claim 8 or 9, characterized in that said play catching element (15) has a longitudinal lug (16) abutting against said cover (10).

13. Lock according to one of claims 8 to 10, characterized in that said clearance play element (15) is plastic.