FR2759727A3 - Locking device for doors - Google Patents

Abstract

The device comprises a housing (10) encasing a lock (8) with a safety catch (21), an apertured head piece with a fastened base plate (35), a nut (18) and a resilient body (71). The resilient body, e.g. a spring, acts upon the safety catch, cooperating with the nut so as to slide in the aperture of the head piece between a drawn position and a projected position. The lock includes a safety lock which is arranged with an actuating component (65) which is rigidly fixed to the nut. The safety catch and the actuating component are respectively provided with cooperating members (4,66) which are arranged along the longitudinal axis of the safety catch. One of them is formed as an adjusting member (4) which can be adjusted in a number of defined positions and the cooperating member is formed as a cam (66).

Description

The present invention relates to a

  closing device, for a door, in particular a double leaf comprising a lock provided with a latch bolt, a headrest having at least one light and a support plate fixed to the headrest, a nut capable of cooperating with at least one handle , and a return means intended to act on the latch bolt, which is arranged to cooperate with the nut, sliding in the lumen of the headrest between a retraction position and a

projecting position.

  In these devices of known type the latch bolt is

  operated by a handle via a nut.

  However, known closing devices of the aforementioned type have drawbacks. Indeed, a disadvantage consists in particular in the fact that a door provided with a closing device of this type cannot be closed by folding down the door on which it is mounted, but it requires an actuation of the handle to allow its closing. This can be annoying for the user, especially when it is charged or when it is not able to easily activate the

  handle for some reason.

  Another known type of device comprises a housing comprising a plaster, to which a headrest is attached, and a closing mechanism, the housing being closed by a cover which is screwed onto the plaster. The shoemaker is designed to house a safety lock arranged to actuate a deadbolt lockable by a locking member. A disadvantage here resides in the location of the locking member causing a certain bulk with respect to the deadbolt. Another drawback lies in the location of the return means. These are generally located so as to occupy a certain clean space which must be taken into account for the sizing of the housing. This is particularly the case when the return means are wound around the latch bolt. This arrangement of the recall means can also expose them to a

external disturbance.

  An additional drawback lies in the fact that the cover is removable, thus allowing relatively easy access for an unauthorized person to the contents of the boot, that is to say the closing mechanism, which is made possible by removing the cover from the palaster. This is inconvenient from the point of view of

  the security of the closing device.

  The purpose of the closure device according to the present invention is to remedy the aforementioned drawbacks. To this end, the device according to the invention is remarkable in that the said lock consists of a safety lock provided with a cylinder, that a control member is arranged integrally with the nut so as to act on the U-bolt, that the U-bolt and the control member are each provided with first means and second means arranged to cooperate together, the aforementioned first and second means consisting respectively of an adjustment means selectively displaceable between a number predetermined positions, which are aligned along the longitudinal axis of the latch bolt, and in which one can be detachably engaged the projecting element, on the one hand, and in at least one lug attached to the control member, on the other hand, the latter being arranged to cooperate with the aforementioned projecting member by means of the aforementioned return means so as to move the bolt between the positions above-mentioned rest and retraction. Thus, the latch bolt is made retractable with the slam of the door, therefore without

handle handling.

  According to a preferred embodiment, the latch bolt has a profiled bevel leading end, preferably between 30 and 600, more preferably between 40 and 50, the bevel being oriented laterally towards this side which promotes more easy from the latch bolt. Advantageously, the aforementioned return means allows retraction and exit from the latch bolt without

  the lug or the handle must not move.

  Preferably, the aforementioned return means consists

  a spring arranged coaxially around the half bolt

tower.

  According to an advantageous embodiment of the device according to the invention, the aforementioned control member is formed by a ring comprising a cylindrical outer profile delimited by two practically parallel sides, said ring being connected by one of the aforementioned sides to the nut forming a hub so as to form an annular groove in which the return means is housed, and in that the aforementioned lug is arranged radially on the outer periphery of the aforementioned cylindrical profile. The aforementioned control member ensures reliable and efficient bolt control. In addition, the construction of the first and second gripping means

is simple and inexpensive.

  S More particularly, said adjustment means is formed by a projecting element attached relative to the lateral surface of the latch bolt. This construction makes it possible to considerably reduce the lateral dimensions of the closing mechanism in the direction of the axes of rotation of the handles. Furthermore, the size due to the return means of the latch bolt is eliminated, since it is housed in the control member thereof. In addition, this provision provides effective protection of the return means against an external disturbance. The aforementioned locking member is of very simple construction while ensuring

  extremely effective locking of the deadbolt.

  Said lateral surface of the latch bolt is provided with a predetermined number of openings in one of which can be detachably engaged.

  protruding element, in particular of the screw type.

  An adjustment possibility for the latch bolt is provided by the adequate adaptation of the number of openings in the latch bolt. This allows an initial offset and an adjustment of the respective rest positions of the latch bolt and the wheel according to the dimensions.

support tube.

  Advantageously, there is provided a reminder means

  additional cooperating directly with the half pane

  turn so that it can be brought out and retracted independently of the lug and the handle

door.

  According to an additional embodiment, it is

  provided a receiving means for the lock, in particular

  culier, the latch bolt, to which it is specifically adapted, which is intended to be arranged on an upright facing the upright on which the lock is mounted. The aforementioned reception means comprises a reception plate in which is provided at least one corresponding bolt reception orifice in alignment with the latter, as well as a socket plate attached thereto and

  intended to be entered by the user.

  The perforated receiving and gripping plates mutually form an angle a, in particular between 35 and

   , preferably, approximately 45.

  The grip plate is provided with a handle element adapted thereon, more particularly the handle element is made of a material

  synthetic, preferably applied by injection.

  The aforementioned receiving means acts both as a receiving plate for the introduction of the bolt of the locking consolidation means by the presence of grooves in which the bolts can be locked and of a handle allowing the opening of the second

swinging from a double door.

  Thus, the striker receiving means serves both as a receiving plate with a handle support plate for pushing the bolt, as a locking plate for the bolts, and as a handle, preferably made of synthetic material injected on the receiving plate. , in particular for the opening of the second leaf

opposite of a double door.

  The arrangement indicated is particularly compact while ensuring efficient and safe operation of the locking member by its guided arrangement between

  the deadbolt and the support plate.

  In addition, the aforementioned locking member is of very simple construction while ensuring a

  extremely effective deadbolt locking.

  In addition, with the retention of the return means that it receives, any risk of disengagement of the return means from the locking means subjected to frequent back and forth movements when the lock is

used is thus avoided.

  The deadbolt is adjustable according to the transverse dimensions of the support tube on which the closing device is intended to be mounted. The number of adjustment possibilities depends directly on the

  number of grooves in the deadbolt.

  Another measure according to the invention makes it possible to combine the first and second return means in a single means having two functions, makes the assembly appreciably simpler and makes it possible to further reduce considerably

  the space taken up by the elastic return means.

  The reduction in the number of holes in the support tube provides a significant increase in the resistance and the holding thereof. The security of the

closure is reinforced.

  To loosen the sockets which are hidden in the support tube, it is necessary to have an appropriate tightening wrench, held only by authorized persons. By customizing the key / socket systems, it is possible according to the present invention, by conferring a configuration of unique and personal gripping means, to obtain a closing device which, once mounted, has considerable reliability. Thus, in particular, the aforementioned first and second gripping means are each formed by a notch and a complementary projection allowing

  to form a tenon-mortise bond.

  Thanks to the integrated structure of the lock case, in which the cover and the plaster are integrally integrated with each other, the lock case is practically tamper-proof and the safety of the closing device is considerably enhanced. Other advantages and particularities of the closure device according to the invention will emerge from the

  more detailed description given below of an example

  illustrated by means of the accompanying drawings.

  Figure 1 shows a partially exploded perspective view of a closure device

according to the invention.

  Figure 2 shows an exploded perspective view

  of a closure device according to the invention.

  Figure 3 illustrates the operation of the

  closing by an internal sectional view thereof.

  Figure 4 shows the device in the assembled state.

  FIGS. 5 and 6 represent views comprising a

  variant in detail of part of the device.

  Figures 7 & 9 illustrate different views in detail

  of a part of the closing device.

  The present invention generally relates to a closing device, in particular for a door, with a lock. The closure device described applies in particular to any type of opening, such as gate, barrier, pivoting door provided with a lateral side profiled in tubular form as in the example described.

  below and of generally any dimension.

  In Figure 1 is illustrated the lock device which comprises a boot 10 in which is housed the

  lock 8 with plaster on which a cover is fixed.

  The housing 10 is designed to house a lock mechanism making it possible to control at least one bolt. In the example below, a control mechanism for a latch bolt 21 and a deadbolt 22 each having an elongated shape of predetermined length will be described, as illustrated in FIG. 3. In particular, the structure exemplary mechanism described below allows the transformation of a rotational movement of a control member 65 which is driven by a

  handle 2, in a translational movement of the bolt.

  Each bolt 21, 22 is intended to engage in the aforementioned tubular profile 19 under the action of a respective actuating member. Conventionally, the actuating member of the latch bolt 21 is constituted by a handle 2 provided on either side of the door and the actuating member of the deadbolt 22 by a

  key 1, for example inserted into a security lock 8.

  In the closing device, the control member 65 advantageously comprises a wheel 25 which has a lug 66 on its periphery, the lug 66 thereof being arranged to engage with the projecting element provided on the half latch -turn 21. The wheel 25 & lug 66 forming a lever is arranged in a substantially concentric manner around the nut 18. The wheel 25 also has on its periphery another stop lug 72 intended to limit the stroke of the wheel. To this end, the support plate 35 has on its leading edge a stop 20 intended to limit the travel of the stop lug 72 of the wheel. The wheel is made integral with the nut 18 by attaching itself to the bottom of the latter to the support plate 35, so as to form a groove

annular 68.

  An elastic return means 71 is provided which is intended to return the latch bolt 21 to its rest position. The return means is produced in the form of a spiral spring 74 winding around the nut 18 in the above-mentioned annular groove 68. In order to ensure good support of the spring, a notch 69 is provided on the periphery of the wheel, preferably in the non-useful zone of the latter, that is to say outside the lug zone 72 The notch 69 then serves as a housing for a primer 70 of the spring. Preferably, the nut and toothed wheel assembly is arranged between the latch bolts 21

and sleeping 22.

  Furthermore, the thickness of the wheel 25 is less than the diameter of the latch bolt 21. The spiral spring 74 is entirely housed in the annular groove 68. This arrangement of the spring and the wheel makes this closure device more compact and therefore offers the advantage of considerably reducing its size. Preferably, the spiral spring 74 is metallic. The deadbolt 22 has a double axial alignment

  notches 83 and grooves 76, 77, 78 respectively.

  The notches and grooves preferably extend

  each transversely to the axis of the bolt 22.

  In each alignment, the profile of the grooves and

  respectively of the notches is practically identical.

  The alignment of the notches is turned towards the organ of

command 65.

  Opposite the alignment of notches 83, a locking member 55 serving as a latch is arranged to slide transversely relative to the sliding direction of the deadbolt 27, between the latter and the support plate 35. Thus, the locking device

  is formed for example by a sliding plate 50.

  On the support plate 35 is provided a guide 51 allowing the transverse sliding of the plate 50. The plate 50, preferably of substantially rectangular shape, thus has a leading edge 48 and a trailing edge 48 'forming a latch ramp and it is provided with a loop 53 projecting relative to the plate starting from the interior of the plate as visible in FIG. 1. The plate 50 is slidably housed in the aforementioned guide 51, between the lateral surface 29 of the recessed portion 103 of the bolt 22 and the support plate 35, the loop 53 being turned outward so as to engage with the notches 83 of the deadbolt. This arrangement of the locking member is particularly advantageous by its

  very small footprint and its reliability.

  Another return means 39 is provided opposite the loop 53 so as to return the wafer 50 to its rest position. This is formed for example by an elongated type spring with two branches 46, 47 in the form of a hairpin. The branches 46, 47 of the spring have a long length so as to ensure an effective return of the wafer to its rest position while not requiring too high pressure thereon thanks to the leverage obtained by the length branches 46, 47 of the spring 54, which, from

  preferably is also metallic.

  The first and second abovementioned return means are advantageously combined in a single spring 71. Thus, the hairpin spring 39 is connected by one of its branches 47 to the spiral spring 59, at the free end thereof. . The spring 39 extends outside the annular groove 53, the cylindrical casing 49 of the wheel 10 being advantageously interrupted over a part of its periphery, so as to allow a comfortable passage of the return means as visible in FIG. 3 The interruption zone is for example formed by a peripheral recess delimited laterally by two shoulders allowing rotation of the wheel 10, despite the presence of the return means 39 which remains practically in place. The aforementioned rotation is thus limited by the shoulders. Thus, the spring 39 according to the invention has a double function by its action on the half-turn bolt and on the locking member. The number of parts-lXs is reduced, the speed of assembly of the closing device increased

and the reduced size.

  Preferably, the loop 53 is arranged on a median axis of the wafer 50 so as to ensure a

  better balance of forces acting on it.

  Advantageously, the loop is stamped from the wafer without removing material. This considerably promotes the solidity and the holding of the loop to the plate. The loop 53 is attached to the plate at an interior point thereof and extends linearly along a slope a predetermined as visible in the figures. The loop 53 can however also be attached to the plate at two interior points 191, 192 so as to form a passage eyelet for the

  branch 46 of the spring 39 as illustrated in FIG. 1.

  In order to ensure adequate safety for the closing device, each bolt 21, 22 has a considerable length. The bolts 21, 22 are mounted to slide axially in the closing device. To allow the bolts to slide, passages are provided in the headrest 7, as well as in the tubular profile 19. The passages 56, 57 and 58, 59, which are provided

  respectively to allow the passage of half bolts

  tower 21 and frame 22 through the tube 19, are arranged in a mutually opposite manner around the periphery of the tube 19 and in alignment with the respective corresponding passage 36, 38 in the headrest 7. A support plate 35 is attached perpendicularly to the headrest 7 at a longitudinal edge thereof. The shape of the plate 35 is advantageously adapted to the interior shape of the housing 10. Guide elements 37, 39 of the bolts 21, 22, for example a guide eyelet connected to the support plate 35, are arranged in the alignment of the aforementioned bolt passages 36, 38. Given the relatively pronounced length of each of the bolts 21, 22 it is important to ensure excellent guiding stability of the latter in their axial sliding along the arrow designated by F. A To this end, the guide elements 37, 39 are attached to the edge of the plate 35 which is opposite to that to which the headrest 7 is attached, thus ensuring a maximum distance between the two guide locations of each bolt

21, 22.

  As shown in FIG. 3, an additional guide eyelet 40, 41 is provided for each bolt in the extension of each bolt passage 36, 38 thus increasing the support surface of each bolt and therefore its stability. The deadbolt 22 has several grooves 76, 77, 78 which are aligned along the longitudinal axis of the bolt 22 while extending practically transversely with respect thereto. The aforementioned grooves are intended to each cooperate with the cleat

  drive not shown of the safety lock 8.

  Depending on whether the drive cleat engages in one or other of the grooves 76, 77, 78, the bolt 22 will have a shortened or lengthened stroke relative to the headrest 7. This possibility of adjusting the stroke of the deadbolt 22 makes it possible to adapt the lock to tubular profiles 19 of different sections, such as round, rectangular or square. This constitutes an appreciable advantage because it allows the adaptation of a single lock to different types of tubular profiles, which considerably facilitates the management of stocks of such locks. As described below, a similar measure is provided for the latch bolt 21 providing the same adjustable stroke advantage of the bolt. Thus, the travel of both the latch bolt 21 and the deadbolt 22

is adjustable.

  S Fixing means are provided for fixing the headrest 7 to the tube 19. The aforementioned fixing means are formed by sockets 91, 92 intended to engage with the aforementioned bolt passages 36, 38 by one of their ends 94 respectively. Said ends 94 of sockets 91, 92 are advantageously threaded and the bolt passages 36, 38 tapped in correspondence over a sufficient depth so as to ensure a solid connection between the tube of

  support 19 and the closing device.

  The sockets 91, 92 are engaged in the passages 36, 38 through the aforementioned openings 56, 57 and 58, 59 respectively. In order to ensure convenient clamping of the sockets 91, 92 in the passages 36, 38, the sockets 91, 92 are provided at their respective opposite ends, around their periphery, with at least one gripping means such as a notch 93. The tightening of the sockets 91, 92 in the passages 36, 38 is then carried out by an appropriate key 97, of cylindrical or prismatic shape and whose length is substantially greater than the section of the tube so as to allow the manipulation of the key of the 'outside. The diameter of the tightening key 97 corresponds substantially to the diameter of the periphery of the end of the socket which has the notch 93. The tightening key 97 has at least one end at least one projection 98 intended to cooperate with the notch 93. Thus, accessibility to the sockets is made more difficult after placement of

  these & inside the tube 19.

  As can be seen in FIGS. 1 and 2, the sockets have, in the non-threaded zone, an enlarged head portion 95 forming a shoulder allowing the tube 19 to be held against the headrest 7. The fastening by the sockets 91, 92 of the closure device to the tube 19 by making use of the openings 56, 57 and 58, 59 which are at the same time intended for the passage of the bolts 21 and 22 makes it possible to limit the number of openings in the tube 19. In addition, the relatively large grip surface between the threaded bushings and passages increases the connection stability between the tube 19 and the

closing device.

  In addition, one can advantageously provide a particular peripheral arrangement of notches 93 in the sockets 91, 92 each having a particular profile. In the example illustrated, two diametrically opposite notches are provided, each having a rectangular profile. The advantage lies in the fact that the loosening of the sockets 91, 92 requires a key 97 which is provided with an end having a corresponding profile. This strengthens the security of the

  closing device and therefore the reliability of this

  because we can personalize the sockets and make the loosening of them only possible

for authorized persons.

  More particularly, each socket is axially hollow, the interior wall being of cylindrical appearance. Correspondingly, the bolts also have a generally cylindrical appearance at least over part of their length. This results in yet another advantage of the sockets. Being arranged along the sliding axis of the bolts, the sockets indeed form an additional guide for the bolts as visible in FIG. 3, thus contributing to

their stability.

  The second axial alignment of the transverse grooves 76, 77, 78 is turned on the opposite side with respect to the latch bolt and towards the entry of the lock as it emerges from the figures. The grooves are arranged to cooperate with the not shown bit of the safety lock. Thanks to the presence of several grooves, it is possible to adjust the stroke of the deadbolt 6 according to the tube. The number of taps in the bolt

  frame is a function of the number of grooves in it

  this. In the example illustrated, there is provided for example for each groove, that is to say for each stroke adjustment of the bolt, a notch corresponding to a closed position of the deadbolt, that is to say when that -this protrudes from the tube as shown in dashed lines in Figure 4 by the reference A, and a notch corresponding to the open position thereof, that is to say when it is flower relative to the tube 19 as shown in solid lines in Figure 4 by the reference B. However, one could also provide an additional notch by groove corresponding to double turn locks or, more generally, multiple turn. In the headrest, two openings 171, 172 are provided for the passage of fixing screws 173, 174. A first fixing screw 173 is used to securely fix the headrest with the support plate to the boot housing 10. Furthermore, the deadbolt has at a certain height a shoulder 179 leaving the bolt truncated longitudinally on a narrowed zone of the bolt. The truncated zone extends longitudinally from the inner end of the bolt which faces

  the lock housing, up to the abovementioned shoulder 179.

  The second fixing screw 174 is intended to fix the casing 108 of the safety lock to the closing device. To this end, the casing is at the level of the bit, pierced transversely with a threaded opening 175 which is placed opposite a pierced threaded pillar 176. By bringing the second fixing screw 174 by the headrest, a connection is obtained between the security lock and the faceplate which is all the more solid as the grip surface between the fixing screw 174 on the one hand and the pierced pillar 176 and the transverse drilling of the lock on the other hand is large. In order to ensure easier mounting of the lock in the closing device, a retaining tab 177 is provided which extends along the lower contour of the lock entry 106 and is connected to the pierced pillar 176 as illustrated in the Figure 3. The longitudinal recess of the deadbolt allows vertical alignment of the latch bolt and the deadbolt while ensuring sufficient space for the aforementioned transverse sliding between the deadbolt and the support plate, plate or latch. Thus, the closure device is more compact.

  A stop rib is provided on the inside of

  the headrest, practically opposite the center of the nut.

  The stop rib extends perpendicular to the longitudinal axis of the headrest 7. It is intended to limit the stroke of the wheel in the projection direction.

of the latch bolt 21.

  The profile of the notches 83 of the deadbolt 22 is adapted to the loop 53 of the locking member forming a latch 55, in particular to the aforementioned slope c and to the width thereof. Advantageously, the notches 83 are slightly flared so as to ensure engagement of the loop 53 in the notch 68 smoothly and smoothly, when the locking member 55 slides towards the deadbolt 22 in the direction of the arrow designated by the reference G on the

  Figure 3 and engages with it.

  The lock case 10 shown in FIG. 1 is in the form of a one-piece body integrating cover and plaster in a six-sided case 11, 12, 13, 14, 15, 16. The case forming a case 10 presents on the 'One of the faces 16 an opening 33 for receiving a headrest 7 which is independent of the housing itself. Thanks to the one-piece structure of the housing, a closing device is obtained, the safety of which is considerably increased because the lock 8 is housed in the case 10 installed in the door. Indeed, the only access to the lock 8 is located in the lateral opening 33 which is closed by the headrest '7. The headrest is locked in front of the tubular profile 19 on which the closure device is mounted. The lateral opening 33 is thus completely inaccessible, which removes any possibility of access to the lock mechanism housed in the housing 10. In addition, said one-piece structure of the shoemaker 10 offers the advantage of facilitating the mounting thereof in the door and thus considerably reduce the assembly time. The size of the assembly formed by the bootmaker and the headrest is reduced. Advantageously, the edge 32 surrounding the opening 33 and the edge of the headrest 7 have a beveled profile allowing rapid and secure fitting of one into

i 'other.

  The operation of the closure device according to the invention is described below, with the aid of FIG. 3. The latch bolt 21 is actuated by one of the handles and the deadbolt 22 by the introduction of a safety key 1 in the profiled key entry 3 of one of the rotary cylinders of the safety lock 8. When mounting the locking device, the initial position of each bolt 21, 22 is selected according to the dimensions transverse of the support tube 19. The latch bolt 21 is adjusted by positioning the latter in the desired recoil position relative to the wheel 25. It suffices to choose the position of the latch bolt 21 always as a function of the tube support 19 and replace the wheel 25. In this regard, it is possible to reuse the closure device for support tubes having different transverse dimensions. It is then simply necessary to reposition the latch bolt as described above by previously removing the wheel 25 in order to obtain in the rest position, the appropriate projection thereof relative to the edge surface of the support tube. After releasing the handle 2, the latch bolt 21 is automatically returned to its projecting rest position under the effect of the spiral spring 74 which is wound around the nut 18. In fact, the handle 2 is turned according to the direction of the arrow indicated by the reference in Figure 3 to open the door. Then, the nut 18 and the wheel 25 secured thereto are also made to rotate in the same direction, the rotational movement of the wheel being transmitted to the latch bolt 21 so that the latter is caused to perform a sliding axial withdrawal following the arrow indicated by the reference F in Figure 1 and bring the latch bolt 21 in the withdrawal position. The

  spring, in particular the coiled part 74 thereof

  ci, thus finds itself compressed. When the handle is released, the spring 71 relaxes, thus bringing the wheel to its starting position in an opposite direction of rotation. The primer portion 70 located at the free end of the coiled portion 74 of the spring 71 serves as an element of application to the wheel. The wheel 25 has at this height an interrupted profile forming a notch 69 around which the primer portion 70 of the spring

rolls up.

  The mechanism for setting the deadbolt 22 in motion is described below. The deadbolt 22 slides axially along the direction of rotation given to the safety key 1, in turn imparting a rotational movement according to the arrow indicated by the reference H to the safety lock 8 in a known manner. Beforehand, the deadbolt 22 is adjusted as a function of the transverse dimensions of the support tube 19 as is the case for the latch bolt 21. The adjustment of the deadbolt 22 is done by selectively positioning one of the grooves 61 of the deadbolt 6 with the possibility of adjusting the deadbolt 22 according to the section of the support tube 19, as well as to reuse the same closing device with support tubes having different transverse dimensions. To do this, simply reposition the deadbolt 22

  relative to the safety lock 8.

  During its rotation, a radially projecting element of the lock, such as a bit, comes into contact with the trailing edge 52 of the plate 50 serving as a latch, which until this moment is in the state of rest and is located still engaged by its protruding loop 53 in one of the notches 83 of the deadbolt, then raises the latter, the deadbolt 22 remaining, at this stage of the movement, still immobile. The lifting, against the spring 54, of the plate forming a locking member with respect to the deadbolt 22 causes the loop 53 of the latter to gradually disengage from the notch 83 and thus to release the deadbolt 22. Thus, by continuing the rotation of the key 1, the bit continues its rotational movement and thus causes the deadbolt 22, now released, to slide axially in the direction of the arrow indicated by the reference E. When the bit is completely out of the groove 76 of the bolt 22, one of the notches 83 is located opposite the projecting loop 53 of the plate. Under the action of the loop portion 54 of the spring 71, which is compressed, the protruding loop 53 is brought back into the notch 83 which is located opposite the latter. By carrying out a sliding movement back to its initial rest position, the plate 50 thus locks the deadbolt 22 in the position in which it has been brought by the rotation of the key, namely opening or closing, if necessary. due to

double turn.

  It follows from the above that the position of the notches 83 along the deadbolt 22 is determined

  by the position of the groove (s) 76 therein.

  In addition, each groove 76 advantageously corresponds to at least two notches 83, one for locking the bolt 22 by the latch 55 in the open position and the other for locking the bolt in the closed position. For locks with multiple turns, additional notches 83 are provided, preferably one additional notch per groove 76. It goes without saying that, if necessary, certain notches could be duplicated so as to reduce the number relative to the number grooves. Furthermore, the width of the grooves 76 measured along the axis of the bolt 22 relative to the width of the bit is such that there is a clearance between the bit and each groove allowing the

  movement of the bit in it as described above

  above. In order to avoid undesired warping or lateral displacement of the looped portion 54 of the spring 71, the guide eyelet 39 of the deadbolt 22 is provided with a projection 35 arranged so as to serve as a guide for the free branch 46 of the loop portion 54 of the

spring 71.

  Finishing fittings 99 are advantageously provided on the periphery of passages 41, 42 and 43, 44

  for example in synthetic material.

  Some additional variants are illustrated in FIGS. 10 to 19. In a particular embodiment, the aforementioned projecting element can be formed by a slide.

lockable.

  The device according to the invention can advantageously comprise: - a deadbolt arranged to slide in the lumen of the headrest between a retraction position and a projecting position and, - a locking member, arranged to lock the bolt in each of its positions and to be pushed back into the erasing position, - the deadbolt having a lateral surface practically parallel to the support plate, in that the lateral surface of the deadbolt is arranged to cooperate with the locking member and in that guide means are provided on the aforementioned support plate so as to allow lateral sliding of the locking member with respect to the deadbolt and parallel to the lateral surface of the latter, between said lateral surface and

the guide means.

  In addition, the aforementioned closing device can also be remarkable in that the deadbolt has a substantially cylindrical profile with a shoulder from which extends a longitudinal recess along said lateral surface which is substantially planar and in that the 'locking member consists of a plate, which is adaptable between said lateral surface of the deadbolt and the guide means and which has a loop projecting relative to the plate, being attached to the plate at each of its ends, that the deadbolt has a predetermined number of notches which are aligned axially at least partially in the aforementioned lateral surface of the bolt, and that another additional return means is provided, the buckle being arranged to engage in one of the notches in the bolt under the action of the other return means

additional above.

Claims (20)

  1.- Closing device, in particular for a door, comprising - a lock (8) provided with a latch bolt (21),   - a headrest (7) having at least one lumen and a support plate (35) fixed to the headrest, - a nut (18) able to cooperate with at least one handle, a return means (71) intended to act on the U-bolt (21), which is arranged to cooperate with the nut (18), sliding in the lumen of the headrest (7) between a retraction position and a projecting position, characterized in that said lock (8 ) consists of a safety lock provided with a cylinder, in that a control member (65) is arranged integrally with the nut (18) so as to act on the latch bolt (21), that the latch bolt (21) and the control member (65) are each provided with first means (4) and second means (66) arranged to cooperate together, the aforementioned first and second means consisting respectively of a adjusting means (4) selectively movable between a predetermined number of positions, which are aligned born along the longitudinal axis of the U-bolt (21), and in one of which can be detachably engaged the projecting element (4), on the one hand, and in at least one lug (66) is attaching & the control member (65), on the other hand, the latter (65) being arranged to cooperate with the aforementioned projecting member (4) by means of the aforementioned return means (71) so as to move the bolt (21) between the projecting rest positions and aforementioned retraction.   2.- Device according to claim 1, characterized in that the aforementioned control member (65) is formed by a ring comprising a cylindrical outer profile (49) defined by two practically parallel sides, said ring being connected by one above-mentioned sides to the nut (18) forming a hub so as to form an annular groove (68) in which the return means (74) is housed, and in that the aforementioned lug (66) is arranged radially around the periphery outside   of the aforementioned cylindrical profile (49).   3.- Device according to claim 1 or 2, characterized in that said adjusting means (4) is formed by a projecting element reported relative   to the lateral surface of the latch bolt (21).   4.- Device according to the preceding claim, characterized in that said lateral surface (99) of the latch bolt (21) is provided with a predetermined number of openings (5) in one of which can be engaged so detachable said   projecting element (4), in particular of the screw type.   5.- Device according to claim 1 or 2, characterized in that the aforementioned projecting element is   formed by a lockable slide (45).   6.- Device according to any one of   previous claims, characterized in that it is   provided an additional return means (71) cooperating directly with the latch bolt (21) so that the latter (21) can be brought out and retracted independently of the lug (66) and the handle door (2).   7.- Device according to any one of   previous claims, characterized in that it is   provided a receiving means (120) for the lock, in particular, the latch bolt (21), to which it is specifically adapted, which (120) is intended to be arranged on an upright (119) facing the upright ( 19)   on which is mounted the lock (8).   8.- Device according to claim pre-   cedent, characterized in that the aforementioned receiving means (120) comprises a receiving plate (121) in which is provided at least one orifice (122, 123) for receiving the bolt (21) corresponding in alignment therewith, as well as a socket plate (125) there   tying and intended to be entered by the user.   9.- Device according to the preceding claim, characterized in that the perforated receiving plates (121) and grip (125) mutually form an angle (a), in particular between 35 and    , preferably approximately 45.   10.- Device according to one of the claims   tions 8 or 9, characterized in that the gripping plate (125) is provided with a handle element (126) adapted thereon (125).   11.- Device according to the preceding claim, characterized in that the handle element   (126) consists of a synthetic material, preferably applied by injection.   12.- Device according to any one of   Claims 7 to 11, characterized in that the means for   aforementioned reception (120) functions both as a reception plate for the introduction of the bolt (21, 22), of means for consolidating the locking by the presence of grooves in which the bolts (21, 22) can be locked and handle allowing   the opening of the second leaf of a double door.   13.- Device according to any one of   previous claims, characterized   in that it comprises: - a deadbolt (22) arranged to slide in the lumen of the headrest (7) between a retraction position and a projecting position and, - a locking member (55), arranged to lock the bolt (22) in each of its positions and to be pushed back into the erasing position, - the deadbolt (22) having a lateral surface (103) practically parallel to the support plate (35), in that the surface lateral (103) of the deadbolt (22) is arranged to cooperate with the locking member (55) and in that guide means are provided on the aforementioned support plate (35) so as to allow lateral sliding of the locking member (55) relative to the deadbolt and parallel to the lateral surface (103) thereof (22), between said lateral surface (103) and the means guide (51).   14.- Closure device according to the preceding claim, characterized in that the deadbolt (22) has a substantially cylindrical profile with a shoulder (179) from which extends a longitudinal recess along said lateral surface (103) which is substantially planar and in that the locking member (55) consists of a plate (50), which is adaptable between said lateral surface (103) of the deadbolt (22) and the guide means (51) and which has a loop (53) projecting relative to the plate (50), being attached to the plate (50) at each of its ends, in that the deadbolt (22) has a predetermined number of notches (83 ) which are axially aligned at least partially in the aforementioned lateral surface (103) of the bolt (22), and in that another additional return means (39) is provided, the loop (53) being arranged to engage in one of the notches (83) of the bolt (22) so us the action of the other means of recall additional (39) above.   15.- Device according to the preceding claim, characterized in that the loop (53) is arranged substantially centrally on the wafer in the axis of each notch (83).   16.- Closing device according to one of   Claims 13 to 15, characterized in that the bolt   (22) has at least two grooves (76, 77, 78), which are axially aligned and which extend transversely with respect to the axis of the bolt (22) opposite the driving cleat and practically opposite notches (83), so as to allow engagement of the driving cleat in one of the grooves (76, 77, 78).   17.- Closing device according to one of   claims 14 to 16, characterized in that the   first and second return means (39; 74) are attached to each other so as to form a single return means, the first elastic return means consisting of a hairpin-shaped spring with two branches (46, 47) and the second return means (74) consisting of a spiral spring which is wound concentrically around the nut (18) in the above-mentioned annular groove (68), one of the branches (47) of the second means return (39) attached to one end of the first return means (74) and the free end zone of the other branch (46) acting on the aforementioned loop (53).   18.- Closure device according to one   any of claims 13 to 15, characterized in that   that the headrest (7) is mounted, by means of   the fixing ones (91; 92), on a support tube (19), in particular of a door, which has a determined profile and is pierced with at least one pair of mutually opposite openings (56, 57; 58, 59), each pair being in alignment with the respective lumen (36, 38) provided in the headrest (7) so as to allow the passage of each bolt (21, 22) through the support tube (19), each socket fixing (91; 92) being clamped in each aforementioned lumen (36; 38) of the headrest (7) passing through the pair or pairs of openings   opposite (56, 57; 58, 59) of the support tube (19).   19.- Closure device according to the preceding claim, characterized in that each socket (91; 92) has at its free end at least one first gripping means (93) intended to cooperate with an external tightening key (97) provided at least   a second corresponding gripping means (98).   20.- Closure device according to any one of the preceding claims, characterized   in that it comprises an integrated housing (10) having a form of case provided on one of the side faces (16)   an elongated opening (33) arranged to receive the headrest (7}.