EP0869239A1 - Lock fitting for sliding door, window or similar - Google Patents

Abstract

The locking fitting (1) has a casing (3) with a slide (4) inside the casing for longitudinal movement. The slide has a projection (11) on its face (10) adjacent to the external wall of the casing. The projection, in the locking position, extends for a predetermined height (c) so that it projects through a longitudinal opening (8) in the wall of the casing and engages against an edge (12) of the exterior wall defining the longitudinal end of the opening at the side opposed to the locking direction. Return springs (14) bias the slide towards the exterior wall of the casing to allow lateral movement of the slide at least equal to the projection extension height.

Description

The present invention relates to a fitting of lock for sliding door, window or the like.

We know, from FR-A-2 590 309, a locking fitting for sliding sash door, window or the like, comprising, inside of a box, a slide movable in the direction longitudinal of the case and carrying a bolt holder, means for blocking the slide relative to the housing in the locked position of said slide, and means for releasing the slide from its position locked, the slide comprising means forming operating device accessible through a light longitudinal formed on the outer wall of the housing.

According to this document, the slide is blocked by in relation to the housing in the locked position of the slide by a ratchet having at least one tooth protruding and actuated by an operating member secured to the slide. To unlock the ratchet, there is an empty stroke of the front slide the bolt drive.

Such a ratchet device is expensive and complex.

The object of the present invention is to remedy to the disadvantages of known fittings, and to propose a fitting of the aforementioned type simple, economical and reliable.

According to the present invention, the fitting of the aforementioned type is characterized in that the slide present on its face adjacent to the outer wall of the housing a protruding element of a height predetermined with respect to said adjacent face, this protruding element being arranged in such a way that, in the locked position of the slide, it makes protrudes through the light and abuts the edge of the outer wall defining the end longitudinal of the light on the opposite side to the direction of locking, and in that return means elastic bands are arranged between the slide and the case so as to permanently request the slide towards the outer wall of the case while allowing a displacement of the slide in the direction perpendicular to said outer wall on a distance at least equal to said height predetermined.

So when the slide, operated by means of the operating member, arrives in its position of locking, the protruding element is in front of the light from the housing and enters this light under the action of elastic return means.

To unlock the slide, just to exert a slight force on the operating member in the direction perpendicular to the outer wall of the housing to move the operating member and the slide in this direction inward of the housing over a distance at least equal to the height predetermined part of the protruding element. So we release this element projecting from the edge defining the end corresponding light, and then we move the operating member and the slide in the direction longitudinal of the case to unlock the door.

According to an advantageous version of the invention, the housing is constituted by a profile comprising two substantially parallel side longitudinal walls projecting on the same side with respect to the wall exterior, each longitudinal side wall has on its longitudinal edge opposite the outer wall a longitudinal fold extending transversely towards the other side wall on at least part of the transverse dimension of the housing, and the slide has at least one tab adapted to rest on one at least folds of the housing.

According to a preferred version of the invention, the slide comprises means adapted to cooperate with additional means of the housing to make two unlocked and locked positions of the slide precise stable positions by opposing in an elastic manner with a predetermined force at any displacement in the longitudinal direction, in one way or the other, of the slide from one either of the said stable positions, where appropriate in helping to move the slide to the position stable opposite if a position is exceeded unstable mean.

Other features and advantages of the invention will appear in the detailed description below.

• la figure 1 est une vue de face, avec arrachement, d'une ferrure selon un mode de réalisation de la présente invention, le coulisseau étant schématisé dans sa position verrouillée ;
• la figure 2 est une vue en coupe selon II-II à la figure 1, le coulisseau étant représenté dans sa position verrouillée ;
• la figure 3 est une vue semblable à la figure 2, le coulisseau étant dans sa position déverrouillée ;
• la figure 4 est une vue schématique en coupe selon IV-IV à la figure 2 ;
• la figure 5 est une vue en perspective du coulisseau du mode de réalisation des figures 1 à 4, le coulisseau étant représenté avec l'organe de manoeuvre dirigé vers le haut ;
• la figure 6 est une vue semblable à la figure 5, l'organe de manoeuvre étant dirigé vers le bas ;
• la figure 7 est une vue schématique semblable à la figure 2 d'un autre mode de réalisation de l'invention ;
• la figure 8 est une vue schématique semblable à la figure 3 du mode de réalisation de la figure 7 ;
• la figure 9 est une vue agrandie d'un détail de la figure 2 suivant un autre mode de réalisation de la présente invention comportant une serrure dans le plan de la figure ;
• la figure 10 est une vue en perspective éclatée du mode de réalisation représenté à la figure 9 ;
• la figure 11 est une vue agrandie du détail XI à la figure 9 ;
• les figures 12A à 12D sont des vues de dessus agrandies de l'organe d'entraínement du mode de réalisation des figures 9 à 11 représentant les différentes phases d'une opération de déverrouillage, dans lesquelles le barillet est représenté respectivement dans sa position de départ (O°) et après des rotations de 205°, 335° et 540°;
• la figure 13 est une vue semblable à la figure 2 d'un détail d'un autre mode de réalisation de la présente invention ;
• la figure 14 est une vue de dessus du détail représenté à la figure 13 ;
• les figures 15 et 16 sont respectivement une vue de profil et une vue de dessus d'une variante d'un détail de la figure 5.

In the accompanying drawings, given solely by way of nonlimiting examples:

• Figure 1 is a front view, with cutaway, of a fitting according to an embodiment of the present invention, the slide being shown schematically in its locked position;
• Figure 2 is a sectional view along II-II in Figure 1, the slide being shown in its locked position;
• Figure 3 is a view similar to Figure 2, the slide being in its unlocked position;
• Figure 4 is a schematic sectional view along IV-IV in Figure 2;
• Figure 5 is a perspective view of the slider of the embodiment of Figures 1 to 4, the slider being shown with the operating member directed upwards;
• Figure 6 is a view similar to Figure 5, the actuator being directed downwards;
• Figure 7 is a schematic view similar to Figure 2 of another embodiment of the invention;
• Figure 8 is a schematic view similar to Figure 3 of the embodiment of Figure 7;
• Figure 9 is an enlarged view of a detail of Figure 2 according to another embodiment of the present invention having a lock in the plane of the figure;
• Figure 10 is an exploded perspective view of the embodiment shown in Figure 9;
• Figure 11 is an enlarged view of detail XI in Figure 9;
• Figures 12A to 12D are enlarged top views of the drive member of the embodiment of Figures 9 to 11 showing the different phases of an unlocking operation, in which the barrel is shown respectively in its starting position (O °) and after rotations of 205 °, 335 ° and 540 °;
• Figure 13 is a view similar to Figure 2 of a detail of another embodiment of the present invention;
• Figure 14 is a top view of the detail shown in Figure 13;
• FIGS. 15 and 16 are respectively a side view and a top view of a variant of a detail in FIG. 5.

In the embodiment shown in Figures 1 to 6, the locking hardware 1 for opening sliding door 2, window or the like, includes, to inside a housing 3, a slide 4 movable in the longitudinal direction 5 of the housing 3 and carrying a bolt holder 6, means for locking the slide 4 relative to the housing 3 in the locked position said slide 4, and means for releasing the slide 4 from its locked position. The slide 4 comprises means forming an operating member 7 accessible through a longitudinal light 8 formed on the outer wall 9 of the housing 3.

The slide 4 has on its face 10 adjacent to the outer wall 9 of the housing 3 an element 11 projecting from a predetermined height C relative to said adjacent face 10. This projecting element 11 is arranged so that, in the locked position of the slide 4, it projects through the slot 8 and is in abutment against the edge 12 of the outer wall 9 which defines the longitudinal end of the slot 8 on the side opposite to the locking direction 13 of the slide (see figure 2).

More precisely, the projecting element 11 defined by its transverse face 11a opposite direction 13 locking a song 11a which engages with the edge 12 in the locked position of the slide 4 (see figure 2). Element 11 thus constitutes a anti-intrusion device and blocks the slide 4 in its locked position.

Elastic return means 14 are arranged between the slide 4 and the housing 3 so as to permanently urge the slide 4 towards the external wall 9 of the housing 3 while allowing movement of the slide 4 in the direction 15 perpendicular to the external wall 9 over a distance at least equal to said predetermined height C. This makes it possible to push the protruding element 11 towards the inside of the housing 3 in order to unlock the slider 4 from its locked position, the protruding element 11 then sliding along the internal face 9a of the external wall 9 of the housing. 3. The distance C is for example substantially equal to the thickness of the wall 9. Thus, the burglar-proof element 11 has been released.

Classically, and as shown schematically in Figures 1 to 4, the housing 3 is introduced into a light 16 formed in the interior wall 17 of sliding sash 2.

The sliding leaf 2 is a conventional leaf consisting, for example, of profile frames aluminum or some other material.

The outer wall 9 of the housing 3 covers fully opening 16. The housing 3 is fixed from conventional way to the inner wall 17 of the opening: each transverse edge 19, 20 of the opening 16 is pinched between the outer wall 9 of the housing 3 and a fixing element 21 by means of a fixing screw 22 introduced from outside the housing 3 into a hole 23 of the outer wall 9 (see Figures 1 to 3).

In this example, and as shown in detail in Figure 4, the housing 3 is constituted by a profile 24 comprising two longitudinal walls side 25, 26 substantially parallel projecting from a same side with respect to the outer wall 9. Each lateral longitudinal wall 25, 26 has on its longitudinal edge 27, 28 opposite the outer wall 9 a longitudinal fold 29, 30 extending transversely towards the other side wall 26, 25.

The longitudinal folds 29, 30 extend transversely over at least part of the dimension transverse of the case, and can be joined to form a solid wall forming a bottom of the housing 3.

As shown in the figures, the slide 4 has two side tabs 14 each adapted to to rest elastically on the fold 29, 30 housing correspondent 3.

The legs 14 are made in a way any known. They can be fixed in a in any way, for example by welding or brazing, slide 4. They can also be molded in one piece with the slide 4.

In the example shown, the slide 4 has, in its middle part, means forming operating member 7 constituted by a recess 32 whose concavity is turned towards light 8 of the outer wall 9 of the housing 3.

This recess 32 can be produced, for example, by molding or by folding. It allows the passage of fingers of a user of the fitting, by the light 8, to the bottom 33 of the recess 32 to allow to exert a longitudinal force to move the slide 4 in one direction or the other in the longitudinal direction 5 of the housing, and a force in the direction 15 perpendicular to the outer wall 9 of the housing 3 to unlock the slide 4 of its locked position.

The slide 4 includes means 34 adapted to cooperate with complementary means 36 of the housing 3 to make the two positions unlocked and locked slide 4 stable positions precise by resisting elastically with a predetermined force at all displacements in the longitudinal direction 5 one way or the other of the slide 4 from one or the other of the said stable positions, if necessary by helping the moving slide 4 to the stable position opposite if an average position is exceeded unstable or substantially unstable.

In this example, the slide 4 has two fingers 34 projecting longitudinally from a end 35 of the slide 4. Each of the walls longitudinal side 25, 26 of the housing 3, comprises a bulge 36 projecting towards the inside of the housing 3 relative to this wall 25, 26. Each bulge 36 is arranged so that a feeler 38 arranged at the free end of the corresponding finger 34 and projection towards the wall 25, 26 corresponding to the housing 3 relative to finger 34 is respectively of a on either side of said bulge 36 within stable, unlocked and locked positions, slide 4.

Each bulge 36 thus constitutes, at the start from either of the two stable positions of fingers 34, the locked locked position shown in solid lines in Figure 1, or the position unlocked shown in dashes in this figure, a first ramp through which the fingers 34 must be elastically erased when the slide 4 passes from one or the other of said stable positions to an unstable or substantially unstable average position, then a second ramp on which the fingers 34 support elastically during the passage of the slide 4 from this average position to the stable position opposite.

The instability of the middle position is due to the presence of bulges 36 and constraint elastic exerted by the fingers 34 on these bulges.

The means that we have just described oppose thus to any untimely movement of the slide 4 in longitudinal direction.

As shown in particular in Figure 1, the bulges 36 are, for example, formed by deformation towards the inside of the housing 3 of the walls longitudinal side 25, 26 of the housing 3. This deformation, which is a plastic deformation, is easily achievable when the housing 3 is a profile 24 in light metal or plastic.

Means forming stops 41 are provided on the internal face 25a, 26a of at least one longitudinal wall lateral 25, 26 of the housing 3 after the insertion of the slide 4 inside the housing 3, to limit the slide 4 stroke in at least one direction inside the housing 3.

There is preferably a stop 41 on each longitudinal wall 25, 26 of the housing 3 in the vicinity of each longitudinal end of said housing 3. These stops are made in any known manner, for example in the form of punctures by punching a tongue directed towards the inside of the case in each of the longitudinal side walls 25, 26 of this one.

In the example shown, the slide 4 carries near the end 42 of the member forming a operation 7 opposite to the projecting element 11 a bolt holder 6. The length L of the light 8 (see FIG. 7) and the position of the bolt holder 6 are predetermined so such as a screw 43 for blocking the projection P of the bolt 40 (see Figure 1) is accessible by light 8 in the unlocked position of the slide 4 shown at Figure 3.

In the embodiment of FIGS. 7 and 8, spring means 44 are arranged between the housing 3 and the slide 4 and stress in permanently slide 4 towards its position of lock of Figure 7. This gives a automatic movement of the slide 4 towards its position lock.

We can make the displacement of the slide 4 under the action of spring 44 is stopped before the locked position, as shown in the figure 7, to make manual action necessary to reach this locked position and block the slide 4 in this position.

In this way, if we operate the opening in the closing direction, the chamfer 40a of the bolt 40 resting on the keeper (not shown) pushes back the bolt 40 and the slide 4 in the direction of unlocking against the action of spring 44. The latter automatically recalls slide 4 and bolt 40 to the position shown in Figure 7, which is close to but distinct from the locked locked position Figures 1 and 2.

Any means of indexing, punctured, ramped cooperating with finger 34, etc., are provided for stop the slide 4 in this position.

A false maneuver is thus possible without risk of damaging the keeper and / or the bolt. But one manual operation on slide 4 is necessary to place the slide 4 in its locked position to get the burglar-proof effect of this invention.

The spring 44 can also be dimensioned from so as to automatically bring the slide 4 back into its locked position. In this case an anti-false device maneuver of any type is to be expected from so as to detect the proximity of the frame and to unlock the slide before a false opening the door does not damage the keeper and / or the bolt.

Such an anti-tamper device is not necessary only in the case of an automatic lock fitted with an anti-intrusion device.

In the embodiment shown in Figures 9 to 11, the burglar-proof device 11 can be unlocked from the outside of the opening 2 by means a key 45 actuating via a lock 46 a member 47 for driving the slide 4. In this example, the member 47 is adapted to slide the along the internal face 9a of the external wall 9.

In the example shown, the lock 46 is a cylinder lock ending axially with a disc 48 carrying an operating finger 49 adapted to be engaged in a housing 50 of the drive member 47.

The actuator 47 present in the axis of the accommodation of the accommodation 50 and on either side of this axis parallel to the wall 9 a recess 51 allowing finger movements 49.

FIGS. 12A to 12D show diagrammatically the different relative positions occupied by finger 49 with respect to the recess 51, during the different phases of an unlocking operation.

In the locked position of Figure 12A, the drive member 47 has been moved in the direction 13 lock to the left of the figure, and finger 49 occupies the relative position 49a near the wall 51a, out of engagement with the walls of the housing 50. The finger 49 in position 49a is here in abutment against an element of wall 80 parallel to direction 5.

In the situation shown in Figure 12B, the cylinder 46a of the lock 46 has turned 205 ° in the unlocking direction 81, the counterclockwise direction at the figure. finger 49, in position 49b, enters the housing 50. The drive unit 47 has not yet been moved.

In the situation shown in Figure 12C, barrel 46a has rotated a total of 335 ° in the direction 81 from the position of FIG. 12A. During the rotation from 205 ° to 335 °, finger 49 has remained prisoner of housing 50, and pushed the wall 50a towards the right of the figure to move the organ drive 47 in the unlocking direction, opposite in the locking direction 13, to the right of the figure, of a length A equal to the sliding of the bolt 40 between its two locked positions (figure 2) and unlocked (Figure 3). Finger 49 is now in position 49c in which it is no longer in taken with the wall 50a.

In the situation shown in Figure 12D, barrel 46a has rotated a total of 540 °, and finger 49 is now in position 49d in abutment against the wall 51d opposite the wall 51a, and against the wall 82 situated in the extension of wall 80.

In this last phase, the organ 47 remained stationary in its position unlocked.

Slide 4 was thus manually released by means of lock 46 and it was brought into its unlocked position (there is no spring 44). The finger 49 has passed to relative position 49d, near of the wall 51d, out of engagement with the walls of the housing 50, which corresponds to the unlocked position of the slide, and which abuts against the wall 82 parallel to direction 5.

For the reverse locking operation, rotates the barrel 46a without the opposite direction 83. the finger 49, starting from position 49d, arrives in the position 49c in which the wall 50a leaves it enter the housing 50 where it abuts against the wall 50b. In the rotation from 335 ° to 205 °, the finger 49 goes from position 49c to position 49b and pushes back in the locking direction 13, to the left in the figure, the wall 50b and the entire organ 47 on the same distance A. In the position 49b, finger 49 is no longer engaged with the wall 50b, leaves housing 50 and can return freely at position 49a.

To allow the slide 4 to be released its locked position of FIG. 2, the member 47 and the slide 4 have complementary means to conjugation of arranged forms so as to transform a displacement in direction longitudinal 5 of the drive member 47 at the start of an unlocking operation by moving the slide 4 in direction 15 perpendicular to the outer wall 9 of the housing 3.

As shown in detail in Figure 11, the slide 4 has a stud 52 whose face transverse 53 facing the locking direction 13 of the slide 4 is inclined relative to said perpendicular direction 15 and extends in direction 13 locking and inward of the housing 3. From its side, the drive member 47 has a face complementary 54 inclined substantially in the same direction so as to move the slide 4 in the direction 15 towards the inside of the box 3 at the start of an operation to unlock the slide 4 at key 45.

The face 54 of the drive member 47 belongs to a lever element 55 carried by a arm 56 of organ 47.

The lever 55 is retained between the pad 52 and a stop 57 of the slide 4, which means that the lever 55 transversely to slide 4.

The surface 58 of the lever 55 facing the outer plate 9 of the housing is located opposite a corresponding surface 59 of the slide 4.

So that the lever 55 acting on the face inclined transverse 53 of the pad 52 manages to exit element 11 from its position in engagement with edge 12 of plate 9, the distance between the two surfaces 58 and 59 is slightly greater than the height C of the contact area between edge 12 and the shoulder or edge 11a of the element 11, and either by example equal to C + ε, as shown schematically in Figure 11.

It is also necessary that the lever 55 can be move in the unlocking direction, opposite to the direction lock 13, of sufficient length function the inclination of the inclined faces 53 and 54, for lift the block 52, immobilized in the direction longitudinal, from a distance at least equal to C + ε.

Figures 13 and 14 show another embodiment of means ensuring both the elastic return function of the slide 4 towards the outer wall 9 of the housing 3, and the function consisting of opposing in an elastic manner with a predetermined force at any movement of the slide 4 in the longitudinal direction, in one direction or in the other, from either position stable unlocked and locked slide 4.

For this purpose, the slide 4 has, above of element 11, a tab 61 extending in the longitudinal direction 5 of the housing in the opposite direction in the locking direction 13.

The tab 61 has at its free end, at less a conformation 62 adapted to come into grip elastic, respectively in the position locked and in the unlocked position of the slide 4, with complementary conformations 63 and 64 integral or forming part of the folds 29 and 30 constituting the bottom of the housing 3.

In the example shown, the tab 61 comprises two conformations 62, located respectively near the lateral longitudinal walls 25 and 26 of the housing 3. The conformations 62 are here convex outgrowths substantially spherical in shape.

Complementarily, folds 29 and 30 each have a conformation 63 and a conformation 64, produced here in the form of a concave recess of substantially spherical shape.

Conformations 63 and 64 are obviously spaced from each other, in the direction longitudinal 5 of the housing 3, from a distance corresponding to the displacement of the slide 4 between its respective locked positions, diagrammed in lines full in Figure 13, and unlocked, shown schematically at dashes to this same figure. Conformations 63 and 64 are advantageously provided on arms 65 extending longitudinally under the folds 29 and 30 and fixed in some way under these folds.

The arms 65 can advantageously belong to a fixing member adapted to fix the end housing 3 at the corresponding end of the light 16 of the wall 17 of the opening.

For the clarity of FIG. 13, the tab 61 a shown in FIG. 13 separated from the arms 65 in the direction 15. It is clear that in reality, the leg 61 rests elastically on these arms.

The slide 4 which has been described above can advantageously be produced by injection molding under hot pressure of a plastic material. The paw 61 carried out in this way has a force of elastic return sufficient to perform the functions described above.

We can obviously foresee, conversely, convex growths on folds 29 and 30 and complementary concave recesses on the tab 61.

As shown in Figure 5, the head of the screw 43 for locking the bolt 40 can advantageously be hidden by a cover 66.

In the case where the slide 4 is made in plastic material, the cover 66 can advantageously be made in one piece with the slide 4 to which it can be connected by a hinge 67 constituted by a thinned part of the plastic. The cache 66 has a rectangular shape adapted to the rectangular shape shown in Figures 1 to 6 of light 8 of the lock 1.

In the embodiment shown in Figures 15 and 16, the cover 68 has two ends transverse rounded parallel adapted to the case where the lumen 8 has semicircular longitudinal ends.

The cover 68 has, on its face directed towards inside the slide, two claws 69 fitted each of a lug 70 adapted to engage with additional conformations not shown from slide to removably fix the cover 68 slider audit 4.

In the example shown, the cover 68 comprises also an elongated finger 71 carrying at its end free two tabs 72 forming an arrowhead adapted to be folded down along finger 71 to penetrate a complementary hole, not shown, of the slide 4 and move away from the finger to retain it in the hole, in order to retain the cover 68 on the slide during actuation of screw 43.

We see in Figure 16 that the finger 71 is offset transversely relative to the claws 69, 70.

We have thus described a locking fitting of very simple and economical structure with a number significantly reduced compared to art known prior. This fitting is therefore particularly reliable while meeting all criteria safety functions imposed for such a fitting, which is also compatible with the requirements of the market for various aesthetic aspects to offer to customers.

Of course, the present invention is not limited to the embodiments which we have just describe and we can bring to these many changes and modifications without departing from the scope of the invention.

We can thus adapt to a slide according to the present invention a handle of any type other than the one described above, for example a lever or rocker or push handle, through light 8.

Likewise, a slide and a housing comprising the fingers 34 and bulges 36, or the tab 61 and the conformations 62, 63 and 64, without having a suitable projecting element 11 to protrude by light 8 in the position slider locked 4.

The bolt holder 6 and the bolt 40 can be of a any type.

The slide 4 has at least one finger 34 in protruding longitudinally from one end 35 of the slide 4, and in that a longitudinal wall 25, 26 corresponding to the housing 3 has a bulge 36 projecting inward from this wall 25, 26 and arranged so that a probe 38 formed at the end of the finger 34 and projecting towards this wall 25, 26 relative to finger 34 is located respectively on one side and on the other of said bulge 36 in the stable unlocked and locked positions of the slide 4 and exerts an elastic resistance to contact of this bulge 36 when the slide 4 passes from one to the other of said stable positions.

The slide 4 has a tab 61 extending cantilevered from slide 4 in the direction longitudinal 5 of the housing 3, and the tab 61, comprises conformations 62 located opposite conformations complementary 63, 64 of the folds 29, 30 of the housing and adapted to cooperate elastically with said complementary conformations 63, 64.

Claims (11)

Locking fitting (1) for opening sliding (2) door, window or the like, comprising, inside a housing (3), a slide (4) movable in the longitudinal direction (5) of the housing (3) and carrying a bolt holder (6), means for locking the slide (4) relative to the housing (3) in the locked position of said slide (4), and means for releasing the slide (4) from its locked position, the slide (4) comprising means forming an operating member (7) accessible through a longitudinal light (8) formed on the outer wall (9) of the housing (3), characterized in that the slide (4) has on its face (10) adjacent to the outer wall (9) of the housing (3) an element (11) projecting from a height predetermined (C) with respect to said adjacent face (10), this projecting element (11) being arranged so that in the locked position of the slide (4), it projects through the light (8) and abuts against the edge (12) of the wall outer (9) defining the longitudinal end of the light (8) on the side opposite the locking direction (13), and in that elastic return means (14, 61) are arranged between the slide (4) and the housing (3) so as to permanently urge the slide (4) towards the outer wall (9) of the housing (3) while allowing movement of the slide (4) in the direction (15) perpendicular to said outer wall (9) over a distance at least equal to said height predetermined (C). Lock fitting according to claim 1, the housing (3) being constituted by a profile (24) having two longitudinal walls side (25, 26) substantially parallel projecting on the same side with respect to the outer wall (9), each longitudinal side wall (25, 26) comprising on its respective longitudinal edge (27, 28) opposite the outer wall (9) a respective longitudinal fold (29, 30) extending transversely towards the other wall lateral (26, 25), on at least part of the transverse dimension of the housing (3), characterized in that the slide (4) has at least one tab (14, 61) adapted to rest elastically on one at least folds (29, 30) of the housing (3). Lock fitting according to claim 1 or 2, characterized in that the slide (4) comprises means (34, 62) adapted to cooperate with complementary means (36; 63, 64) housing (3) to make two positions unlocked and locked on the slide (4) precise stable positions by opposing in a way elastic with a predetermined force at all displacement in the longitudinal direction (5), in a in either direction, of the slide (4) from either of said stable positions, if any if necessary by helping the displacement of the slide (4) to the opposite stable position if exceeded from an unstable average position. Lock fitting according to claim 3, characterized in that the slide (4) has at least one projecting finger (34) longitudinally with respect to one end (35) of the slide (4), and in that a longitudinal wall (25, 26) corresponding to the housing (3) has a bulge (36) projecting inwards relative to this wall (25, 26) and arranged so that a feeler (38) formed at the end of the finger (34) and projecting towards this wall (25, 26) relative to the finger (34) is respectively on one side and the other of said bulge (36) in the stable unlocked positions and locked with the slide (4) and exerts resistance elastic in contact with this bulge (36) when the slide (4) passes from one to the other of said stable positions. Lock fitting according to claim 4, characterized in that the bulges (36) are formed by inward deformation of the longitudinal side walls (25, 26) of the housing (3). Lock fitting according to claim 3, characterized in that the slide (4) has a tab (61) extending in a cantilever from the slide (4) in the longitudinal direction (5) of the housing (3), and in that the tab (61) comprises conformations (62) located opposite conformations complementary (63, 64) folds (29, 30) of the housing and adapted to cooperate elastically with said complementary conformations (63, 64). Lock fitting according to one any of the preceding claims, characterized in that means forming stops (41) are provided on the internal face (25a, 26a) of at least one wall longitudinal side (25, 26) of the housing (3) after insertion of the slide (4) inside the housing (3) to limit the stroke of the slide (4) in at minus a sense inside the housing (3). Lock fitting according to one any of the preceding claims, characterized in that the slide (4) carries near the end (42) of the element forming the operating member (7) opposite the projecting element (11) a bolt holder (6), and in that the length (1) of the light (8) and the position of the bolt holder (6) are predetermined so such as a screw (43) locking the projection (P) of the bolt (44) is accessible by light (8) in the unlocked position of the slide (4). Lock fitting according to one any of the preceding claims, characterized in that it includes spring means (44) arranged between the housing (3) and the slide (4) and continuously biasing the slide (4) in the direction (13) to its locked position. Lock fitting according to one any of the preceding claims, the slide (4) can be unlocked from outside the opening (2) by means of a key (45) actuating a member (47) for driving the slide (4), characterized in that the drive member (47) and the slide (4) comprises complementary means (53, 54) with conjugation of forms arranged so as to transform a displacement in longitudinal direction (5) of the drive member (47) at the start of a unlocking operation by moving the slide (4) in the direction (15) perpendicular to the outer wall (9) of the housing (3) inwards of said housing (3). Lock fitting according to claim 10, characterized in that the slide (4) comprises a stud (52) whose transverse face (53) facing the slide locking direction (13) (4) is inclined relative to said direction perpendicular (15) and extends in the direction (13) of locking and inward of the housing (3), and what the drive member (47) has a face complementary (54) inclined substantially in the same direction so as to move the slide (4) in the direction (15) towards the inside of the housing (3) at the start an operation to unlock the slide (4) at the key means (45).

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