EP3203000A1 - Door lock with resiliently nestable base - Google Patents

Abstract

The invention relates to a base for mounting a lock square (37) on a front wall (34) of an opening (32), this front wall (34) having an internal face (36) and an orifice (33). ), the base comprising: - a main body (21) having a bore (59) adapted to receive a square (37) lock, - At least one flexible finger, said finger (22) for embedding, having a locking surface (61) arranged to be placed at least partly against the face (36) of the inner opening (32), characterized in that it further comprises at least one flexible finger, said finger (23) holding, having a locking surface (61) arranged to be placed at least partly against a face (43), said face of maintaining, a collar (41) of a square (37) lock. The invention also extends to a lock comprising such a base and a method of mounting this lock.

Description

The invention relates to a mounting base of a door lock square, a door lock comprising such a base and a method of mounting a lock on a front wall of an opening, in particular on a hollow profile. opening of.

Throughout the text, the term "opening" designates any part of a carpentry work such as a door, a window, a drawer ... movable relative to a fixed frame of the carpentry work. In particular, the invention relates to frame openings having a hollow section, metal or synthetic material for example.

In addition, throughout the text is designated by the term "flexibility" the ability of a body to deform elastically bending (under the effect of a force applied perpendicular to its length).

Numerous locks are already known comprising a rotary operating handle for moving a bolt of the lock to lock or unlock it, in order to close or, respectively, to open the opening. Such a maneuvering handle makes it possible to engage the bolt in a striker of the frame, in order to lock the lock and the opening in closed position; or to release the bolt outside the strike in order to unlock the lock and open the opening. The movement of the bolt results from a rotational movement of the operating handle. The operating handle is generally assembled in rotation with a "square" (throughout the text, the term "square" designates a shaft cross-section non-symmetrical revolution-especially square-of a lock mechanism and intended receiving a rotary operating handle) of a transmission mechanism for transforming the rotational movement of the operating handle into an appropriate movement of movement of the bolt. Such a maneuvering handle is also generally provided to be used to move the opening itself between its open and closed positions.

In addition, the square and the operating handle are preferably assembled to the opening in a non-sliding pivot connection so eliminate any translational movement of the square and the operating handle relative to the opening.

The operating handle and / or the square are generally fixed to the front wall of the opening by a base.

FR 2877979 describes a lock mounted on a hollow section of opening. The lock comprises an operating handle assembled to a support plate placed against an outer face of the profile and is fixed to the profile by clamping screws assembled to jaws coming to bear against an inner face of the profile during tightening screws. Thus, such an assembly makes it possible to pinch the front wall between the jaw and the support plate so that this support plate is fixed to the profile. The support plate has a bore adapted to receive and guide a rotating follower. A cylindrical housing of the base allows to eliminate any translational movement of the follower. The follower is assembled to the operating handle by a screw axially passing through the follower to make the follower and the operating handle integral in rotation.

The mounting of such a lock, and more particularly the assembly of the support plate and the operating handle to the profile, therefore requires the use of many screws and to have available a screwdriver. The mounting of such a lock is therefore relatively long and expensive. In addition, the mounting of such a lock is complex because it requires to maintain the base against the profile of the opening so as to screw it.

The invention aims to overcome these disadvantages.

It therefore aims to provide a lock that can be mounted and dismantled on a hollow profile opening quickly, easily and economically.

The invention aims in particular to provide a mounting base of a sash lock square adapted to be mounted quickly, easily and economically on a hollow profile opening.

It aims in particular to provide a base for mounting a square and an operating handle without using tools.

• un corps principal présentant un alésage apte à recevoir un carré de serrure,
• des moyens de fixation à l'orifice traversant de la paroi frontale de l'ouvrant, les moyens de fixation comprennent au moins un doigt flexible, dit doigt d'encastrement, s'étendant en saillie du corps principal selon une direction longitudinale, comprenant :
  • o au moins un crochet :
    • ▪ s'étendant en saillie transversalement à la direction longitudinale,
    • ▪ agencé pour pouvoir être introduit dans l'orifice de la paroi frontale de l'ouvrant depuis une face externe de ladite paroi frontale de l'ouvrant, opposée à ladite face interne,
    • ▪ présentant une portée de blocage agencée pour pouvoir être placée, alors que le corps principal de l'embase est en appui contre la face externe de la paroi frontale de l'ouvrant, au moins en partie contre la face interne de la paroi frontale de l'ouvrant,
  caractérisée en ce qu'elle comprend en outre au moins un doigt flexible, dit doigt de maintien :
  • s'étendant à partir du corps principal,
  • comprenant au moins un crochet présentant une portée de blocage agencée pour pouvoir être placée au moins en partie contre une face, dite face de maintien, d'un collet d'un carré de serrure pour assembler et bloquer en translation le carré de serrure au corps principal de l'embase tout en autorisant la rotation du carré de serrure dans l'alésage du corps principal de l'embase.

To do this, the invention relates to a base for mounting a lock square on a front wall of an opening, this end wall having an inner face delimiting a hollow cavity of the opening and a through orifice, the base comprising:

• a main body having a bore adapted to receive a lock square,
• fastening means to the through hole of the front wall of the opening, the fixing means comprise at least one flexible finger, said fitting finger, projecting from the main body in a longitudinal direction, comprising:
  • o at least one hook:
    • Extending projecting transversely to the longitudinal direction,
    • Arranged to be introduced into the orifice of the front wall of the opening from an outer face of said front wall of the opening, opposite to said inner face,
    • ▪ Having a locking surface arranged to be placed, while the main body of the base is in abutment against the outer face of the front wall of the opening, at least partially against the inner face of the front wall of opening,
  characterized in that it further comprises at least one flexible finger, said holding finger:
  • extending from the main body,
  • comprising at least one hook having a locking surface arranged to be placed at least partly against a face, said holding face, of a collar of a lock square to assemble and lock in translation the lock square to the body the base while allowing rotation of the lock square in the bore of the main body of the base.

A base according to the invention can be placed against an outer face of a front wall of an opening to maintain a square and a lock maneuvering handle to the opening.

The flexibility of the flush finger thus allows the flush finger to be flexed, so that the end of the flush finger approaches a main axis of the bore of the main body, so that its hook can be introduced. in an opening of a front wall opening. Thus, the base can be nested in a front wall of the opening.

The flexibility of the flush finger also allows the flush finger to at least substantially resume its rest position, that is to say a position in which the flush finger is not flexed, when it is introduced into a hole of a front wall opening. In such a position, the hook can be placed against the inner face of the wall of the opening. The hook of the flush finger thus allows to maintain the base fitted into the opening.

In some advantageous embodiments, the base comprises two parallel mounting fingers positioned facing around the bore of the main body of the base.

Thus, such a base can be assembled to a front wall of an opening without using tools.

In addition, such a base is adapted to be assembled to any opening.

Furthermore, each retaining finger can assemble and lock in translation a lock square to the main body of the base while allowing the rotation of the lock square in the bore of the main body of the base.

More particularly, the square comprises a main stem and a collar, the latter being a portion of the square extending transversely around and projecting from the main stem.

The main body of the base thus has a face, said attachment face, forming the top of the base. The attachment face makes it possible to obtain an abutment bearing in order to keep the square joined to the base and to prevent any translation movement of the square by holding the collar of the square between the thrust bearing and the locking surface of the square. crochet each finger of maintenance. The main body of the base thus also has a face, called the embedding face, towards the underside of the base, and therefore opposite to the attachment face, and enabling the base to be assembled to the front wall of the base. opening.

Thus, each retaining finger extends opposite to each flush finger from the main body of the base.

Such a base can thus be mounted or removed from the door by allowing the person mounting or dismounting the base to remain on the same side of the opening.

Indeed, each retaining finger is easily accessible because placed outside the opening and on the side of the outer face of the opening on which can be mounted a handle.

The flexibility of each retaining finger makes it possible to bend the retaining finger, so as to increase the distance between this retaining finger and the main axis of the bore of the base, so that the collar of a lock square can be introduced between the hook of the holding finger and the main body of the base. In addition, when a square collar is introduced between the hook and the main body of the base, each retaining finger resumes its rest position, that is to say the position in which the retaining finger n ' is not bent. In this position, the hook of each retaining finger is placed against the retaining face of the collar of the square.

In some advantageous embodiments, the base comprises two parallel holding fingers positioned facing around the bore of the main body of the base.

Thus, a lock square can be assembled easily and quickly to a base according to the invention.

Advantageously and according to the invention, said locking surface of a hook of a fitting finger is oriented obliquely at an obtuse angle with respect to the longitudinal direction of the fitting finger.

Said biased locking surface thus allows the base to adapt to different thicknesses of a front wall of an opening leaf. between its outer face and its inner face. The base can be assembled to an opening regardless of the thickness of its front wall.

Thus, the locking surface is arranged to be placed, while the main body of the base is in abutment against the outer face of the front wall of the opening, against an edge of the through orifice of the front wall. opening on the inner face of the front wall

In addition, said biased locking surface also allows, after assembly of the base on the front wall, the extraction of the embedding finger from the orifice under the effect of a tensile force exerted on the main body tending to move the base of the front wall.

Furthermore, an embedding finger has a deformable structure at least transversely in compression on a front face opposite the hook. More particularly, the deformation can be plastic or elastic. The deformable structure makes it possible to adapt the base to the thickness of a front opening wall. Indeed, depending on the thickness of the front wall of the opening, the gap between the recessing fingers of the base varies so that the insertion of the square can be more or less easy or impossible when the gap between the flush fingers is too narrow. The ribs facilitate insertion of the square by being compressed by the square so as to adapt to the diameter of the thin portion of the assembly section of the square. More particularly, the deformable structure may be formed by ribs projecting transversely from the end face opposite the hook.

Furthermore, preferably, the attachment face of the main body of the base is adapted to be in contact with a face, said face of rest, the collar of the lock square, opposite its holding face, the face hooking being spaced from a hook of each holding finger a distance at least substantially equal to the distance between the holding face and the face of repose of the collar.

Thus, a base according to the invention makes it possible to prevent any transverse movement of a lock square comprising a collar relative to the base.

In certain advantageous embodiments of the invention, the main body of the base comprises at least one pin arranged to be introduced into a slot of said front wall to lock the base in rotation relative to this front wall when the base is assembled to the front wall.

The anchor thus makes it possible to prevent a lock square from rotating a base according to the invention with which it is assembled when the latter is assembled to a front wall of an opening.

• un mécanisme comprenant un carré rotatif,
• une poignée de manoeuvre montée sur le carré de façon à être solidaire en rotation de ce dernier,

caractérisée en ce qu'elle comprend une embase selon l'invention adaptée pour pouvoir être assemblée à l'orifice de l'ouvrant et au carré de la serrure.The invention also extends to a sash lock intended to be assembled to a front wall of an opening, said front wall having an inner face delimiting a hollow cavity of the opening and a through orifice, the lock comprising:

• a mechanism comprising a rotating square,
• an operating handle mounted on the square so as to be integral in rotation with the latter,

characterized in that it comprises a base according to the invention adapted to be assembled to the opening of the opening and the square of the lock.

More particularly, the square of the lock and the operating handle can form a single piece or two separate pieces.

In addition, the bore of the base rotates the square of the lock to manipulate a bolt of the opening.

In addition, advantageously and according to the invention, each recessing finger of the base is arranged such that when the square is inserted into the bore of the main body of the base, the square prevents at least partly all bending of each flush finger in the direction of disengagement of each hook relative to the inner face of the front wall of the opening, the base then being irremovable from the front wall.

More particularly, the recess finger of the base is engaged between the wall of the opening and the square of the lock. Thus, such an assembly prevents the hook of the embedding finger of the base from being removed from the wall front of the opening when the square of the lock is introduced into the bore of the base and extends at least to the mounting finger.

In addition, the embrace of the flush finger eliminates any play between the flush finger and the front wall of the opening.

Furthermore, the operating handle has a cavity, said receiving cavity, receiving at least partly the square of the lock and the main body of the base.

More particularly, advantageously and according to the invention, said receiving cavity of the operating handle has a locking surface arranged to cooperate with each retaining finger of the base and prevent, after assembly of the base, the square and of the operating handle, any bending of the holding finger of the base in the direction of disengagement of each hook relative to the retaining face of the collar of the square.

Thus, when the collar of the square of the lock assembled to the base is positioned in the receiving cavity of the operating handle, the holding finger is engaged between the locking surface and the collar of the square thus preventing finger flexion. maintaining the square can not be removed from the base.

More particularly, in an advantageous embodiment, the lock comprises a quick assembly device of the square relative to the operating handle, this quick assembly device comprising at least one transverse pin with elastic return.

More particularly, such an assembly device makes it possible to assemble the square to the operating handle without using tools.

In addition, in certain advantageous embodiments, the lock also comprises a wedge placed between the main body of the base, the wedge being deformable in compression and having an orifice of diameter greater than or equal to the diameter of the bore of the main body. of the base. More particularly, the wedge is elastically deformable. Such an elastic shim can be used when the distance between the main body of the base and a hook of a holding finger is greater than the thickness of the collar so as to have a play between the main body of the base and the bearing face of the collar of the square. Such clearance may be necessary to ensure that the square collar can be placed between the hooks of the holding fingers and the main body. The deformation of the elastic wedge makes it possible to adapt the thickness of the wedge so as to eliminate play when the collar is placed between the hooks of the holding fingers and the main body so that such a game is not felt. by a person handling the operating handle.

The invention also extends to an opening comprising a lock according to the invention.

• une poignée de manoeuvre,
• un mécanisme comprenant un carré rotatif assemblé solidaire en rotation à la poignée de manoeuvre, le carré s'étendant en saillie axialement de la poignée de manoeuvre,

procédé dans lequel on assemble le carré à la paroi frontale de l'ouvrant par une embase comprenant :

• un corps principal présentant un alésage apte à recevoir un carré de serrure de l'ouvrant,
• des moyens de fixation à l'orifice traversant de la paroi frontale de l'ouvrant,

caractérisé en ce qu'on utilise une embase selon l'invention, et en ce qu'on introduit chaque doigt d'encastrement dans l'orifice de la paroi frontale de l'ouvrant dans un sens dit sens d'insertion, jusqu'à ce que chaque crochet de chaque doigt d'encastrement soit placé au moins en partie contre la face interne de la paroi frontale de l'ouvrant.The invention also extends to a method of mounting a lock on a front wall of an opening, said front wall having an inner face delimiting a hollow cavity of the opening and a through orifice, the lock comprising:

• a maneuvering handle,
• a mechanism comprising an assembled rotatable square rotatably secured to the operating handle, the square extending axially projecting from the operating handle,

process in which the square is assembled to the front wall of the opening by a base comprising:

• a main body having a bore adapted to receive a lock square of the opening,
• fastening means to the through hole of the front wall of the opening,

characterized in that a base according to the invention is used, and in that each insertion finger is inserted into the orifice of the front wall of the opening in a direction said direction of insertion, until that each hook of each finger assembly is placed at least partly against the inner face of the front wall of the opening.

Such a mounting method using a base according to the invention is simple, fast and requires no tools to assemble the base to the front wall of the opening.

Advantageously and according to the invention, the square of the lock is then introduced into the bore of the main body of the base, the square inserted into the bore preventing at least partially any bending of the fitting finger.

More particularly, the insertion of the square of the lock in the bore of the main body of the base is performed after assembling the base to the front wall of the opening. The hook of the flush finger is then placed against the inner face of the front wall of the opening. The insertion of the square of the lock in the bore of the main body of the base makes it possible to prevent any bending of the flush finger when the square of the lock reaches the flush finger. Indeed, the square of the lock is then in contact with the flush finger so that the flush finger is engaged between the square and the front wall of the opening.

Furthermore, according to an advantageous embodiment, the square is introduced into the bore of the main body of the base until each hook of each holding finger of the base comes at least partly against a face of maintaining a collar of the square, and cooperates with this holding face so as to axially lock the square relative to the base while allowing their relative rotation. This step keeps the square of the lock assembled to the base. This step is sufficient to attach the operating handle to the front wall of the opening when the operating handle and the square of the lock is a single piece.

In some embodiments of the invention, for example when the square of the lock and the operating handle are two separate parts, then the operating handle is engaged around the square and the main body of the base, the collar of the square and each holding finger of the base being inserted into the receiving cavity of the operating handle with the locking surface of the receiving cavity cooperating with each retaining finger so as to lock in the locking position.

This step makes it possible to lock the assembly of the square to the base so as to prevent any translation movement of the square.

In certain embodiments of the invention, for example when the square of the lock and the operating handle constitute two separate parts, the operating handle is assembled around the square until the quick-assembly device is engaged.

More particularly, the assembly device is placed in a blind bore present on the square of the lock and in which is placed the spring whose one end is placed in contact with the bottom of the bore, the pin resting on a second end of the spring and can be placed in the bore of the square of the lock.

The invention also relates to a mounting base of a lock square on a front wall of an opening, a sash lock, an opening and method of mounting a lock on a front wall of an opening characterized combination by all or some of the features mentioned above or below.

• la figure 1 est un schéma en perspective d'un mode de réalisation d'une embase selon l'invention,
• la figure 2 est un schéma, selon la coupe A définie à la figure 6, de l'embase de la figure 1 assemblée à une paroi frontale d'ouvrant,
• la figure 3 est un schéma, selon la coupe A définie à la figure 6, de l'embase de la figure 1 assemblée à un carré d'une serrure selon l'invention,
• la figure 4 est un schéma en perspective et en éclaté d'une serrure conforme à l'invention,
• la figure 5 est un schéma, selon la coupe A définie à la figure 6, de la serrure, représentée à la figure 4, montée sur une paroi frontale d'un ouvrant,
• la figure 6 est un schéma de la serrure, représentée à la figure 4, montée sur une paroi frontale d'un ouvrant,
• la figure 7 est un schéma selon une coupe axiale d'une moitié de l'embase de la figure 1 assemblée à une paroi frontale d'ouvrant présentant une épaisseur supérieure à celle de la figure 2.

Other objects, features and advantages of the invention will become apparent on reading the following non-limiting description which refers to the appended figures in which:

• the figure 1 is a perspective diagram of an embodiment of a base according to the invention,
• the figure 2 is a diagram, according to section A defined at figure 6 , from the base of the figure 1 assembled to a front wall of opening,
• the figure 3 is a diagram, according to section A defined at figure 6 , from the base of the figure 1 assembled to a square of a lock according to the invention,
• the figure 4 is a perspective and exploded diagram of a lock according to the invention,
• the figure 5 is a diagram, according to section A defined at figure 6 , of the lock, represented in figure 4 mounted on a front wall of an opening,
• the figure 6 is a diagram of the lock, shown in the figure 4 mounted on a front wall of an opening,
• the figure 7 is a diagram in an axial section of one half of the base of the figure 1 assembled to a front wall opening having a thickness greater than that of the figure 2 .

A lock according to the invention mounted on an opening 32, shown in FIGS. Figures 1 to 6 , comprises a handle 48 for manipulating a bolt of the opening 32 to open or close the opening 32. More particularly, the opening 32 comprises a front wall 34 having two opposite faces, a first face 36 , said inner face, oriented towards an inner side of the opening 32, and a second face 35, said outer face, oriented towards an outer side of the opening 32. In addition, the inner face 36 of the wall 34 defines a hollow cavity 60 of the opening. The operating handle 48 is positioned on the outside of the opening 32 against the outer face 35 and facing an orifice 33 passing through the wall 34 of the opening 32, a portion of the square 37 of the lock extending to through the hole 33.

In order to manipulate the bolt of the opening 32, the lock also comprises a square 37 adapted to transmit a rotational movement of the handle 48, the rotational movement for manipulating the bolt of the opening 32. More particularly, the square 37 of lock is a rod, for example metal.

More particularly, the square 37 is formed of an end, said end 38 guided, adapted to be integrally assembled in rotation with the handle 48 of operation. The end 38 guided is preferably of parallelepiped shape.

The square 37 is also formed of an end, said end 39 of transmission, adapted to be assembled with a mechanism for manipulating the bolt of the opening 32. The transmission end 39 is advantageously of parallelepipedal shape.

In addition, the square 37 of the lock is assembled to the opening 32 by a base 20 according to the invention, shown in FIGS. Figures 1 to 5 . More particularly, the base 20 has a main body 21 comprising a bore 59 adapted to be traversed by the square 37 of lock. In addition, when the base 20 is assembled at the orifice 33 of the opening 32, the bore 59 of the base 20 and facing the opening 33 of the opening 32 so that the square 37 can pass through the bore 59 of the 20 and the opening 33 of the opening 32 to reach an operating mechanism placed in the hollow cavity 60 of the opening 32 and for manipulating the bolt of the opening 32. More particularly, the diameter of the bore of the main body 21 of the base 20 is smaller than the diameter of the orifice 33 of the opening 32.

In order to assemble the square 37 to the opening 32, the base 20 has a face, called the hooking face 58, forming the top of the base 20. The hooking face 58 makes it possible to obtain a bearing of abutment in order to keep the square 37 assembled to the base 20 and prevent any translational movement of the square 37. The base 20 also has a face, said face 57 of embedding, towards the underside of the base 20, and therefore opposed to the face 58 of attachment, and to assemble the base 20 to the opening 32. The base 20 is preferably made of a synthetic polymer material. Advantageously, the synthetic polymer material has a low coefficient of friction and a coefficient of elasticity for slightly deforming the base 20 during assembly and disassembly of the lock.

In particular, the square 37 has between its two ends a tubular assembly section adapted to be positioned in the base 20. This section comprises a cylindrical portion, said thin portion, and a cylindrical collar 41 extending transversely around and projecting from the lower part, the collar 41 and the thin part being coaxial.

More particularly, in some advantageous embodiments, the hooking face 58 of the base 20 comprises two fingers, said holding fingers 23, each extending projecting from the main body 21 towards the top of the base 20. Each holding finger 23 has a front face, called the outer face, extending the periphery of the main body 21. In addition, each retaining finger 23 protrudes from the main body 21 to an end having a hook 30 on one side, said inner face, opposite to the outer face of the retaining finger 23. More particularly the holding fingers 23 are positioned so as to be parallel and facing one another. In addition, the face internal of each retaining finger 23 has in transverse cross section a radius of curvature similar to that of the collar 41 of the square 37 of the lock.

Moreover, the retaining fingers 23 are flexible in order to be able to spread them to fit the collar 41 of the square 37 in the base 20. In addition, the holding fingers 23 have a radial space at rest (ie its position before deformation in bending), determined by the distance between the hooks 30, less than the diameter of the collar 41, the hooks 30 are positioned on a face 43, called the holding face, of the collar 41. In addition, the distance between the face 58 of hooking of the main body 21 and each hook 30 is at least substantially equal to the height of the collar 41 so as to prevent any translation movement of the square 37 when the collar 41 is fitted into the base 20. Thus, when the collar 41 is assembled to the base 20, a face 42, said bearing face, opposite the face 43 for holding the collar 41, is positioned against the face 58 of attachment of the base 20. Moreover, the hook 30 of each finger 23 of maintenance has a bis water, oriented towards the top of the base 20, allowing to easily spread the holding fingers 23 by fitting the collar 41 in the base 20.

The hooking face 58 also comprises two guide portions 25 making it possible to split the rotation of the square 37. More particularly, each guide portion of the hooking face 58 extends the periphery of the main body 21 so that it each extends in projection from the main body 21 towards the top of the base 20. More particularly, these two guide portions are placed facing one another on an axis orthogonal to an axis passing in the center of the two. holding fingers 23. These two guide portions each have a protrusion, said tooth 63, adapted to cooperate with four grooves 62 present on the cylindrical face of the collar 41 of the square 37. In addition, the teeth 63 are placed so as to be diametrically opposed and facing each other. one from the other. Furthermore, the grooves 62 are placed at 90 ° to each other so that the rotation of the square 37 is blocked every 90 ° when the teeth of the guide portions are placed in diametrically opposite grooves 62 of the collar 41 of the square 37. The teeth are also adapted to emerge from the grooves 62 when a rotation of the square 37 is performed.

In certain advantageous embodiments, a resilient shim 55, of diameter less than the distance between the holding fingers 23, is placed on the main body 21 of the base 20 between the fingers 23 for holding the base 20. in addition, the elastic shim 55 has an orifice of diameter greater than or equal to the diameter of the bore of the main body of the base so that it can be traversed by the square 37. Thus, when the square 37 is introduced into the base 20, the shim 55 is placed between the main body 21 of the base 20 and the collar 41 of the square 37. Such an elastic shim 55 may be used when the distance between the main body 21 of the base 20 and the hook 30 23 of the holding finger is greater than the thickness of the collar 41 so as to have a clearance between the main body 21 of the base 20 and the bearing face 42 of the collar 41 of the square 37. Such a game may be necessary to make sure that the collar 41 of the square 37 t be placed between the hooks 30 of the holding fingers 23 and the main body 21. The deformation of the elastic shim 55 makes it possible to adapt the thickness of the elastic shim 55 so as to eliminate the play when the collar 41 is placed between the hooks 30 of the holding fingers 23 and the main body 21 so that a such play is not felt by a person handling the handle.

The face 57 of embedding of the base 20 comprises two fingers, said fingers 22 of recess, each extending projecting from the main body 21 towards the underside of the base 20. Each finger has a first end face, so-called internal face, axially extending the bore 59 of the base 20. In addition, each flange 22 extends projecting from the main body 21 to an end having a hook 29 transversely projecting from a second face frontal, said external face, opposite to the inner face. More particularly the recessing fingers 22 are positioned so as to be parallel and facing one another. In addition, the inner face of each flush finger 22 has in transverse cross section a radius of curvature similar to that of the section of the bore 59 of the base 20 that it extends. The inner face of each flush finger 22 also has in cross section a radius of curvature similar to that of the section of the bore 59 of the base 20 that it extends. Moreover, the distance between the external faces of flush fingers 22 is smaller than the diameter of the opening 33 of the opening 32. In addition, the flush-fitting fingers 22 have a radial space at rest, determined by the distance between the hooks 29, which is greater than the diameter of the flange. orifice 33 of the opening 32.

Furthermore, the recessing fingers 22 are flexible in order to be able to bring them closer to fit the base 20 in the opening 33 of the opening 32. When the base 20 is fitted into the opening 33 of the opening 32 , the recessing fingers 22 deviate so as to resume at least substantially their rest position, that is to say a position in which the finger is not flexed. Thus, a locking surface 61, directed towards the top of the base 20, of each hook 29 of each mounting finger 22 is positioned against the inner face 36 of the wall 34 of the opening 32 around the orifice 33 of the opening 32 in the hollow cavity 60. More particularly, the locking surface 61 is arranged to be placed, while the main body 21 of the base 20 is in abutment against the outer face of the front wall 34 of the opening 32, against an edge of the orifice 33 through the front wall 34 of the opening on the inner face 36 of the front wall 34.

Furthermore, the hook 29 of each flush-fitting finger 22 has a bevel, oriented towards the bottom of the base 20, making it possible to easily bring the flush-fitting fingers 22 together by fitting the base 20 into the hole 33 of the flange. opening 32.

In addition, the locking surface 61 of each hook 29 of each flush-fitting finger 22 is angled in order to facilitate the approaching of the flush-fitting fingers 22 by withdrawing the base 20 from the opening 33 of the opening 32. In addition, this locking surface 61 allows the hook 29 to adapt to walls 34 of the opening 32 of different thickness as shown in FIG. figure 7 .

In addition, each flush finger 22 comprises a deformable structure on its inner face, facing the square 37 of the lock, which can be formed by ribs 31 and to adapt the base to the thickness of a wall 34 front opening 32. In fact, according to the thickness of the front wall 34 of the opening 32, the distance between the fingers 22 of the flange of the base 20 varies so that the insertion of the square 37 may be more or less easy or impossible when the gap between the flush fingers 22 is too narrow. The ribs 31 facilitate the insertion of the square 37 by being compressed by the square 37 so as to adapt to the diameter of the thin portion of the assembly section of the square 37.

In addition, so that the base 20 can adapt to different thicknesses of a front wall 34 opening 32, the mounting face 57 also comprises projections 27 of contact projecting from the main body 21 of the base 20 towards the bottom of the piece. These contact projections 27 have a cylindrical shape of revolution. More particularly, these contact protrusions 27 have a diameter of between 1 mm and 4 mm, for example of the order of 2.5 mm and a height of between 0 mm and 3 mm, for example of the order of 0, 8 mm. The projections 27 of contact are arranged circularly on the face 57 of embedding of the base 20. More particularly, the distance between the projections 27 of contact and the hooks 29 of the fingers 22 of embedding makes it possible to define a range of thicknesses wall 34 opening 32 for which the base is adapted. Thus, the modification of the height of the contact protrusions 27 makes it possible to adapt a base 20 to all wall thicknesses 34 of the opening 32.

The recess face 57 also comprises two guide portions 24 extending the bore so that they each extend in projection from the main body 21 towards the underside of the base 20. More particularly, these two guide portions 24 are placed opposite one another on an axis orthogonal to an axis passing in the center of the two fingers 22 of embedding. In addition, the two portions 24 for guiding the face 57 of embedding have a radius of curvature identical to that of the section of the bore 59 of the base 20 that it extends. The two portions also have a height lower than that of the fingers 22 of embedding. These guide portions 24 serve to guide the square 37 of the lock in rotation and to prevent any contact between the square 37 of the lock and the front wall 34 of the opening 32.

The recess face 57 also comprises two pins 26 projecting from the main body 21 towards the bottom of the base 20. Each pin 26 is adapted to be placed in an opening 33 of the opening 32. When the pins 26 are inserted into the openings of the wall 34 of the opening 32 placed around the opening 33 of the opening 32 they prevent any rotation of the base 20 relative to the opening 32. More particularly, the two pins 26 are positioned opposite one another on the axis on which are placed the two portions 24 guiding the face 57 of embedding. The dowels 26 thus make it possible to prevent the square 37 from rotating the base 20 with which it is assembled when the latter is assembled to the front wall 34 of the opening 32.

The recess face 57 also comprises recesses 28 on the lower face of the base 20. The recesses 28 make it possible to unhook the base 20 easily from the opening 32 to which it is assembled, with the help of a lever such as a flat-tipped screwdriver for example.

Moreover, the handle 48 has an end 53, said operating end, for handling the handle 48 and an end 54, said guide end, integrally rotated to the square 37. More particularly, the end 54 guide comprises a cavity, said receiving cavity 49, in which are placed the end 38 guided and the collar 41 of the square 37 and the fingers 23 for holding the base 20.

More particularly, the cavity 49 for receiving the operating handle 48 comprises a first bore 50 opening towards the outside of the operating handle 48 and a second bore 51, having a section smaller than that of the first bore 50, opening onto the first bore 50, the two bores extending along parallel axes.

In some embodiments, the end 38 guided the square 37 is embedded in the second bore 51. Thus, the square 37 is integrally assembled with the handle 48 maneuvering. In addition, the flange 41 and the fingers 23 for holding the base 20 are positioned in the first bore 50.

More particularly, said receiving cavity 49 has a shoulder between the first and the second bore 51. This shoulder is spaced from the face 43 for holding the collar 41 of the square 37 at a greater distance. or equal to a length of the hook 30 of the fingers 23 for holding the base 20 so that the hook 30 of each retaining finger 23 can be positioned between the holding face 43 and the shoulder of the receiving cavity 49.

In certain advantageous embodiments of the invention, especially when the handle 48 and the square 37 form two separate parts, it is preferable that the square 37 can be held at the handle 48 while being able to be mounted and disassembled easily handle 48 maneuvering. To do this, the square 37 is introduced into the second bore 51 of the cavity 49 for receiving the operating handle 48, the second bore 51 having a main section sufficiently greater than that of the end 38 guided by the square 37 so that the square 37 can be easily inserted and removed from the second bore 51 of the receiving cavity 49. In addition, an assembly device makes it possible to prevent any translational movement of the square 37 with respect to the operating handle 48 in order to keep the square 37 assembled to the operating handle 48. More particularly, the assembly device comprises a pin 47, placed in a transverse blind bore 44 of the end 38 guided by the square 37, with elastic return formed by a spring 46. A first end of the spring 46 is assembled at the bottom of the the blind bore 44 and a second end is assembled to the pin 47. Thus, the spring 46 exerts a transverse force on the pin 47 to place the pin 47 projecting from the square 37 so that it is introduced into a bore of the operating handle 48, said assembly bore 52, having an end opening on the second bore 51 of the receiving cavity 49 and orthogonal to the latter when the end 38 guided by the square 37 is introduced into this second bore 51. In addition, the assembly bore 52 has a second end opening outwardly from the handle 48. In addition, the assembly device is adapted so that the pin 47 enters the bore 44 of the end 38 guided by the square 37 when a thrust force, opposite and greater than the force exerted by the spring 46 on the pin 47, is exerted on the pin 47.

In some advantageous embodiments of the invention, especially when the handle 48 and the square 37 form two parts distinct, the receiving cavity 49 has at least one locking surface 56 in the first bore 50 adapted to be in contact with at least one retaining finger 23 when the handle 48 is assembled to the square 37 of lock maintained by the Such a locking surface 56 thus makes it possible to prevent any bending movement of the holding finger 23 against which it is positioned. The locking surface 56 thus prevents the square 37 from being withdrawn from the base 20.

The mounting of a lock according to the invention comprises a first step in which the base 20 is engaged in the opening 33 of the opening 32. More particularly, the interlocking consists in introducing the two fingers 22 of embedding the base 20 in the opening 33 of the opening 32 by exerting a thrust force on the base 20 towards the inner side of the opening 32 to bring by bending the two fingers 22 of embedding the base 20 so that the distance between the hooks 29 is greater than the diameter of the opening 33 of the opening 32. When the base 20 is engaged in the opening 33 of the opening 32, the bearing 61 of the hooks 29 22 nesting fingers is positioned against the inner face 36 of the wall 34 of the opening 32. Thus, the base 20 is assembled to the opening 32 but can still be removed from the orifice 33 by exerting a pulling force towards the outer side of the sash 32 making it possible to move closer to flexion the fingers 22 of embedding so that the distance between the hooks 29 is less than the diameter of the opening 33 of the opening 32, the hooks 29 then no longer in contact with the inner face 36 of the wall 34 of the opening 32.

In some advantageous embodiments, after fitting the base 20 in the opening 32, a resilient shim 55 can be placed on the face 58 of attachment of the main body 21. Then, the square 37 of lock is introduced into the bore of the main body 21 of the base 20 until its collar 41 comes to fit between the main body 21 of the base 20 and the hooks 30 of the fingers 23 of maintenance. More particularly, a thrust force is exerted on the square 37 towards the inner side of the opening 32 so that the collar 41 flexibly deflects the holding fingers 23 of the base 20 so that the distance between the hooks 30 is greater than the diameter of the collar 41 to introduce the collar 41 between the main body 21 of the base 20 and the hook 30 of each holding finger 23. The hooks 30 are then positioned against the face 43 for holding the collar 41 thus making it possible to maintain the square 37 in the base 20 and to eliminate any translation movement of the square 37 with respect to the base 20 and to the opening 32. In addition, the introduction of the square 37 in the base 20 makes it possible to position the thin portion of the assembly section of the square 37 against the mounting fingers 22 and thus to eliminate any bending of the fingers 22 of embedding the base 20 thus preventing the base 20 from withdrawing from the opening 33 of the opening 32 when a pulling force towards the outer side of the opening 32 is exerted on it.

In certain embodiments of the invention, in particular those in which the square 37 and the handle 48 of maneuver form a single piece, these two steps are sufficient to assemble the handle 48 to the opening maneuver 32.

In certain other embodiments of the invention, in particular those in which the square 37 and the handle 48 of maneuver form two separate parts, it is necessary to assemble the handle 48 squaring maneuver 37 already introduced into the base 20 nested in the opening 32. Thus, the handle 48 is engaged on the square 37 so that the end 38 guided and the collar 41 of the square 37 and the fingers 23 for holding the base 20 come s' introducing into the cavity 49 for receiving the operating handle 48. More particularly, the end 38 guided by the square 37 is introduced into the second bore 51 of the receiving cavity 49 while the collar 41 of the square 37 and the holding fingers 23 of the base 20 are positioned in the first bore 50 of the receiving cavity 49. In particular, the end 38 guided square 37 is introduced into the second bore 51 so that the pin 47 is oriented towards the bore 52 assembly of the handle 48 maneuvering. Thus, the handle 48 can not be disassembled from the square 37 by exerting on it a tensile force towards the outer side of the opening 32.

In addition, when the operating handle 48 is mounted on the square 37, the holding fingers 23 of the base 20 are positioned between the collar 41 of the square 37 and the bearing surface 56 of the cavity 48 of the handle 48. maneuvering so that any bending movement of the holding fingers 23 is neutralized, thus preventing the square 37 from being withdrawn from the base 20 by exerting on it a tensile force towards the outer side of the opening 32.

In some embodiments of the invention, in which the square 37 and the handle 48 form two separate parts, the disassembly of the lock comprises a first step in which it exerts a thrust force on the pin 47 opposite the the force exerted by the spring 46 on the latter in order to fit the pin 47 into the bore 44 of the end 38 guided by the square 37. For example, it is possible to exert such a thrust force by introducing a rod, such as an Allen key, in the bore 52 assembly from the outside of the handle, until pressing the pin 47 so as to enter the bore 44 of the end 38 guided the square 37 Thus, the handle 48 can be removed from the square 37 of the lock. Moreover, removing the handle 48 for maneuver also frees the fingers 23 to hold their embrace, the holding fingers 23 no longer in contact with the bearing surface 56 of the cavity of the handle 48 to maneuver, so that the holding fingers 23 can be bent.

The disassembly of a lock according to the invention also comprises a step in which the holding fingers 23 are moved away so that the distance between the hooks 30 is greater than the diameter of the collar 41 in order to remove the collar 41 from the base 20. Furthermore, removing the square 37 from the base 20 also frees the fingers 22 of embedding their embrace, the fingers 22 of installation no longer in contact with the square 37, so that the fingers 22 of embedment can be bent.

Then, the base 20 can be removed from the opening 33 of the opening 32 by exerting a tensile force towards the outer side of the opening 32 in order to move by bending the fingers 22 of embedding the base 20 so that the distance between the hooks 29 is smaller than the diameter of the orifice 33.

Claims (16)

Base for mounting a lock square (37) on a front wall (34) of an opening (32), this front wall (34) having an internal face (36) delimiting a hollow cavity (60) of the opening (32) and a through hole (33), the base comprising: - a main body (21) having a bore (59) adapted to receive a square (37) lock, - Fastening means to the orifice (33) passing through the wall (34) front of the opening (32), the fixing means comprise at least one flexible finger, said finger (22) of embedding, s' projecting from the main body (21) in a longitudinal direction, comprising: at least one hook (29): Extending projecting transversely to the longitudinal direction, Arranged to be introduced into the opening (33) of the front wall (34) of the opening (32) from an external face (35) of said opposite wall (34) of the opening (32). at said internal face (36), ▪ having a locking surface (61) arranged to be placed, while the main body (21) of the base is in abutment against the face (35) of the outer wall (34) of the opening (32). ), at least partly against the inner face (36) of the front wall (34) of the opening (32), characterized in that it further comprises at least one flexible finger, said holding finger (23): extending from the main body (21), - comprising at least one hook (30) having a locking surface (61) arranged to be placed at least partly against a face (43), called the holding face, of a collar (41) of a square ( 37) for assembling and locking in translation the lock square (37) to the main body of the base while allowing the rotation of the lock square (37) in the bore of the main body of the base. Base according to claim 1, characterized in that said bearing surface (61) for locking a hook (29) of a fitting finger (22) is oriented obliquely at an obtuse angle with respect to the longitudinal direction of the recessing finger (22). Base according to any one of claims 1 or 2, characterized in that a finger (22) of embedding has a deformable structure at least transversely in compression on a front face opposite the hook (29). Base according to one of claims 1 to 3, characterized in that the main body (21) comprises at least one pin (26) arranged to be introduced into a slot of said front wall (34) to block the base plate. rotation relative to this wall (34) front when the base is assembled to the wall (34) front. Sash lock (32) intended to be assembled to a front wall (34) of an opening (32), this front wall (34) having an internal face (36) delimiting a cavity (60) hollow of the opening (32) and a through hole (33), the lock comprising: a mechanism comprising a rotating square (37), a maneuvering handle (48) mounted on the square (37) so as to be integral in rotation with the latter, characterized in that it comprises a base according to one of claims 1 to 4 adapted to be assembled to the opening (33) of the opening (32) and squared (37) of the lock. Lock according to claim 5 characterized in that each finger (22) for embedding the base is arranged such that when the square (37) is introduced into the bore (59) of the main body (21) of the base, the square (37) at least partially prevents any bending of each flange finger (22) in the direction of disengagement of each hook (29) with respect to the inner face (36) of the wall ( 34) of the opening (32), the base then being irremovable from the wall (34) front. Lock according to any one of claims 5 or 6, characterized in that the handle (48) has a maneuver (49), said receiving cavity, receiving at least partly the square (37) of the lock and the main body (21) of the base. Lock according to claim 7, characterized in that said cavity (49) for receiving the operating handle (48) has a locking surface (56) arranged to cooperate with each finger (23) for holding the base and preventing , after assembly of the base, the square (37) and the handle (48), any bending of the finger (23) for holding the base in the direction of disengagement of each hook (30) relative to the face (43) for holding the collar (41) of the square (37). Lock according to one of claims 5 to 8, characterized in that it comprises a device (45) for quick assembly of the square (37) with respect to the handle (48) for operation, this device (45) for rapid assembly comprising at least one pin (47) transverse elastic return. Lock according to any one of claims 5 to 9, characterized in that it comprises a shim (55) placed between the main body (21) of the base (20), the shim (55) being deformable in compression and having an orifice of diameter greater than or equal to the diameter of the bore (59) of the main body (21) of the base. Opening (32) characterized in that it comprises a lock according to one of claims 5 to 10. A method of mounting a lock on a front wall (34) of an opening (32), said front wall (34) having an inner face (36) defining a hollow cavity (60) of the opening (32) , and a through hole (33), the lock comprising: a handle (48) for maneuvering, a mechanism comprising an assembled rotatable square (37) integral in rotation with the operating handle (48), the square (37) projecting axially from the operating handle (48), method in which the square (37) is assembled to the front wall (34) of the opening (32) by a base comprising: - a main body (21) having a bore (59) adapted to receive a square (37) lock of the opening (32), means for fastening to the orifice (33) passing through the front wall (34) of the opening (32), characterized in that a base according to one of claims 1 to 4 is used, and in that each recess finger (22) is inserted into the opening (33) of the front wall (34) of the opening (32) in a direction said direction of insertion, until each hook (29) of each flange finger (22) is placed at least partly against the inner face (36) of the wall ( 34) of the opening (32). Mounting method according to claim 12, characterized in that the square (37) of the lock is then inserted into the bore (59) of the main body (21) of the base, the square (37) introduced into the boring (59) preventing at least partially any bending of the flush finger (22). Mounting method according to one of claims 12 or 13, characterized in that the square (37) is inserted into the bore (59) of the main body (21) of the base until each hook ( 30) of each finger (23) holding the base comes at least partly against a face (43) for holding a collar (41) of the square (37), and cooperates with the face (43) of maintenance so as to axially lock the square (37) relative to the base while allowing their relative rotation. Mounting method according to claim 14, characterized in that the handle (48) is then engaged around the square (37) and the main body (21) of the base, the collar (41) of the square (37). ) and each finger (23) holding the base being inserted into the cavity (49) for receiving the handle (48) for operation with the bearing surface (56) of this receiving cavity (49) cooperating with each holding finger (23) so as to lock it in the locking position. Mounting method according to claim 15, characterized in that the handle (48) is assembled around the square (37) until engagement of the device (45) fast assembly.

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