EP0457633B1 - Device for fastening of a lock in a door handle, especially the handle of a vehicle door - Google Patents

Description

The present invention relates generally to a device for fixing a lock in a wall and more particularly the fixing of a disengageable rotor lock in a door element, in particular a door handle of a motor vehicle.

It also relates to a vehicle door and a lock intended to be fixed in said door.

The fixing of such a lock requires both means for locking in rotation and in translation, so as to make it completely integral with the wall in which it is to be mounted.

It is usual to make these means using pins or circlips, or even a screw-nut system.

Document EP-A-0 221 375 discloses an example of fixing a lock in a door wall which does not use such means. However, it requires the constitution of the lock in two parts located on either side of the wall and therefore the presence of a compressible seal to ensure a seal between the different parts.

The use of such solutions leads to additional parts and relatively complex assembly operations, which inevitably increases the cost of such an assembly in a manner incompatible with mass production as is the case in particular in the field of the automobile.

• des moyens de blocage en translation du verrou comprenant des tétons coopérant avec des logements circulaires, les tétons et les logements étant respectivement ménagés de matière sur le verrou et la cheminée,
• et des moyens de blocage en rotation du verrou par rapport à la cheminée comprenant au moins une languette élastique ménagée de matière sur le verrou et coopérant avec au moins un épaulement situé aux extrémités de rampes ménagées de matière sur la cheminée.

The present invention solves these problems and proposes for this purpose a device for fixing a lock to a door element, in particular a door handle, which element has a chimney in which the lock is engaged, which consists of a tube. closed by a bottom, device characterized in that it further comprises

• means for blocking in translation of the lock comprising studs cooperating with housings circular, the pins and the housings being respectively formed of material on the bolt and the chimney,
• and means for blocking the lock in rotation relative to the chimney, comprising at least one elastic tongue formed in material on the lock and cooperating with at least one shoulder situated at the ends of ramps formed in material on the chimney.

Thus, the device according to the invention no longer requires additional parts for its assembly, and its cost is considerably reduced.

Advantageously, the pins are formed in one piece on the body of the lock and the circular housings are made in one piece on the chimney of the door handle.

According to a first variant, the elastic tongues are formed from material on the body of the lock and the ramps are formed from material on the internal face of the chimney.

According to a second variant, the elastic tongues are made of material on the chimney of the door handle and the ramps are made of material on the body of the lock.

According to one aspect of the invention, the tongues on the one hand and the ramps on the other hand are diametrically opposite and have a symmetrical inclination relative to the axes of the chimney of the door handle and the body of the lock.

• la figure 1 est une vue en coupe suivant la ligne I-I de la figure 2 de l'ensemble d'un verrou suivant l'invention une fois monté dans une portière de véhicule;
• la figure 2 est une vue de dessus de la figure 1;
• la figure 3 est une vue en coupe suivant la ligne III-III de la figure 4 d'un corps du verrou suivant l'invention;
• la figure 4 est une vue de gauche du corps du verrou;
• la figure 5 est une vue de dessus du corps du verrou avec une coupe partielle suivant la ligne V-V de la figure 4;
• la figure 6 est une vue partielle en coupe suivant la ligne brisée VI-VI de la figure 7 d'une poignée de portière dans laquelle doit être monté le verrou;
• la figure 7 est une vue partielle de la poignée de portière suivant la flèche F de la figure 6.

The invention will be better understood with the description which follows with reference to the appended drawings in which:

• Figure 1 is a sectional view along line II of Figure 2 of the assembly of a lock according to the invention once mounted in a vehicle door;
• Figure 2 is a top view of Figure 1;
• Figure 3 is a sectional view along line III-III of Figure 4 of a lock body according to the invention;
• Figure 4 is a left view of the lock body;
• Figure 5 is a top view of the lock body with a partial section along the line VV of Figure 4;
• Figure 6 is a partial sectional view along the broken line VI-VI of Figure 7 of a door handle in which is to be mounted the lock;
• FIG. 7 is a partial view of the door handle according to arrow F in FIG. 6.

First of all, reference is made to FIG. 1 which illustrates a disengageable lock 10 mounted in a door handle 11 with means which will be explained further.

The latch 10 comprises in particular a rotor 12 journalling in a sleeve or intermediate stator 13, said intermediate stator being able to journal in a fixed body or housing 14.

The rotor 12 which may be of a type identical to that shown in document FR-A-2 631 067, and not forming part of the present invention, will not be described in more detail.

The rotor 12 is moreover integral in rotation with a slide 15 intended to drive a bolt 16 to control the lock associated with the latch 10.

Reference is now made to FIGS. 3 to 5 which illustrate the body or housing 14 of the latch 10.

Said body 14 has the general shape of a cylindrical tube 17 closed by a bottom 18 in which is formed an opening 19 intended for the passage of the slide 15.

According to the invention, the fixing device comprises, formed in one piece, means for locking in rotation and in translation of the lock 10.

The translational locking means consist of two pins 20, 21 of generally parallelepiped shape. The pins 20, 21 formed integrally with the body 14 on the outer wall of the tube 17, are diametrically opposite and have an identical axial position.

In the example shown, the means for locking in rotation consist of two elastic tongues 22,23 formed integrally with the body 14. These two tongues 22,23 are in the general form of a circular sector respectively 24.25 concentric with the outer wall of the tube 14 and are integral with the body 14 only over a small angular portion so as to give them elasticity.

The two tongues 22, 23 are diametrically opposite and are inclined radially by an angle A with respect to the axis 26 of the body 14, symmetrically with respect to said axis 26 as seen in particular in FIG. 5.

Reference is now made to FIGS. 6 and 7 which illustrate the arrangement of a door handle 11 in which the lock 10 is to be mounted.

The door handle 11 comprises a wall 27 extended inwards by a cylindrical chimney 28 and in a manner known per se a circular opening 29 concentric with the chimney 28 and extended inwards by a cylindrical wall 30.

This circular opening 29 is intended for the passage of the key (not shown) which has to actuate the latch 10.

In the chimney 28 are formed rectangular openings 31, 32 which are diametrically opposite and open out onto the internal wall 33 of the chimney 28.

In the example shown, the chimney 28 also comprises two open circumferential housings 34, 35 opening respectively into the openings 31, 32 and ending angularly by walls respectively 36, 37 (FIG. 7).

On the internal face 33 of the chimney 28 are made of material ramps 38, 39 diametrically opposite and symmetrically inclined at an angle A relative to the axis 40 of the chimney 28.

In other words, said ramps 38, 39 have a radial arrangement identical to that of the tongues 22, 23 of the body 14 of the lock 10.

The ramps 38, 39 therefore have a start respectively 41.42 which is at the same level as the internal face 33 of the chimney 28 and an inlet respectively 43.44 which is raised relative to said internal face 33.

This results at this level in the presence of vertical radial walls or shoulders 45, 46 corresponding respectively to the arrivals 43, 44 of the ramps 38, 39.

The mounting of the lock 10 in the door handle 11 is carried out as follows.

The bolt 10 being fully equipped is presented in the direction of arrow F in FIG. 6 so that the pins 20, 21 of the body 21 penetrate into the openings 31, 32 of the chimney 28. The movement of the bolt 10 in the direction of the arrow F takes place until the tube 17 of the body 14 abuts against the internal face of the wall 27 of the door handle 11.

In this configuration, as illustrated in FIG. 2, the tongue 23 is in the position shown in dotted lines, that is to say that it is in abutment against the ramp 38. It is the same for the tongue 22 which is pressed against the ramp 39.

The assembly of the bolt 10 is then rotated clockwise. This operation has the effect of penetrate the studs 20,21 in the circumferential housings 34,35, these then constituting with said studs 20,21 a bayonet type mounting. Thus the pins 20, 21 constitute the means for blocking in translation the lock 10.

During the rotation of the latch 10, the tongue 23 moves in the direction of the arrow in FIG. 2 and its circular sector 24 deforms elastically to follow the inclination of the ramp.

By continuing the rotation, the end of the circular sector 24 escapes from the ramp 38, and folds down by its elasticity in line with the shoulder 45 of the chimney 28.

It is the same for the end of the circular sector 25 of the tongue 22 which folds down to the right of the shoulder 46 of the chimney 28.

The tongues 22,23 on the one hand and the ramps 38,39 on the other hand being inclined radially in a symmetrical manner, it follows that any movement of rotation of the lock in the counterclockwise direction is impossible by bracing of the tongues against the shoulders respectively 45.46.

Said tabs 22, 23 thus constitute the means for locking in rotation of the latch 10.

Simultaneously, it will be noted that the pins 20, 21 abut against the walls 36, 37 of the circular housings 34, 35, which allows precise angular indexing of the assembly of the lock 10.

This angular indexing allows for example the key channel (not shown) to be in a precise vertical position as is customary in the field of motor vehicle doors.

This produces, without additional parts and with simple movements not only the blockages in translation and in rotation of the latch 10 but also its angular indexing.

Of course, the present invention is not limited to the embodiment described above and shown in the drawings, but encompasses any variant or modification that a person skilled in the art could make.

In particular, the elastic tongues 22, 23 can be formed in one piece on the chimney 28 of the door handle 11 and cooperate with ramps 38, 39 made on the body 14 of the latch 10 without thereby departing from the scope of the invention. .

Claims (7)

1. Fastening means for fastening a lock (10) to a door element, especially a door handle (11), which element has a guide sleeve (28) in which the lock (10) is engaged, the latter comprising a tube (17) closed by a base portion (18), the fastening means being characterised in that it further includes

   - means for preventing movement of the lock in translation, comprising lugs (20, 21) cooperating with circular apertures (34, 35), the lugs and the apertures being respectively formed integrally on the lock and the guide sleeve,

   - and means for preventing rotation of the lock with respect to the guide sleeve and comprising at least one resilient tongue (22, 23), formed integrally on the lock and cooperating with at least one shoulder located at the ends of ramps (38, 39) formed integrally on the guide sleeve.
2. Fastening means according to Claim 1, characterised in that the lugs (20, 21) are formed integrally on the body (14) of the lock (10), and in that the circular apertures (34, 35) are formed integrally on the guide sleeve (28) of the door handle (11).
3. Fastening means according to Claim 1, characterised in that the resilient tongues (22, 23) are formed integrally on the body (14) of the lock (10), and in that the ramps (38, 39) are formed integrally on the internal face (33) of the guide sleeve (28).
4. Fastening means according to Claim 1, characterised in that the resilient tongues (22, 23) are formed integrally on the guide sleeve (28) of the door handle (11), and in that the ramps (38, 39) are formed integrally on the body (14) of the lock (10).
5. Fastening means according to one of the preceding Claims, characterised in that the guide sleeve (28) and the body (14) define respective axes (26, 40), the tongues (22, 23) on the one hand and the ramps (38, 39) on the other hand being diametrically opposed to each other and defining an inclination (A) which is symmetrical with respect to the said axes (26, 40).
6. Fastening means according to Claim 1, characterised in that the lugs (20, 21) constitute angular indexing means for the lock (10) in the door handle (11) by cooperation between walls (36, 37) of the circular apertures (34, 35).
7. A motor vehicle door (11) having a fastening means for fastening a lock (10) to an element of the door in accordance with any one of the preceding Claims, characterised in that it includes a wall (27) extended internally by a cylindrical guide sleeve (28) defining an axis (40) and an internal face (30), the said guide sleeve (28) including, formed integrally on its internal face (33), ramps (38, 39) having an inclination (A) which is symmetrical with respect to the axis (40) and comprising starting portions (41, 42) level with the internal surface (33), together with final portions (43, 44) which are super-elevated from the said internal surface (33) and which define shoulders (45, 46).

Images