EP0963498B2 - Door lock - Google Patents

Description

Field of the invention

The present invention relates to a closure device for a door, in particular with a double leaf comprising a lock provided with a latch bolt.

State of the art

In devices of known type, the latch bolt is actuated by a handle via a nut. These devices, however, have disadvantages. Indeed, a disadvantage is that a door provided with a closure device of this type can not close by folding the door on which it is mounted, but it requires an actuation of the handle to allow its closure. This can be inconvenient for the user, especially when it is loaded or unable to easily operate the handle for any reason.

Another type of known device comprises a casing comprising a pallet, to which a headrest is attached, and a closing mechanism, the casing being closed by a cover which is screwed on the pallet. The housing is provided to house a safety lock arranged to actuate a lockable deadbolt by a locking member. A disadvantage here lies in the location of the locking member causing a certain size compared to the deadbolt. Another disadvantage 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 dimensioning of the housing. This is particularly the case when the return means are wound around the latch bolt. This provision of the return means can also expose them to an external disturbance.

A further disadvantage lies in the fact that the lid is removable thus allowing relatively easy access for an unauthorized person to the contents of the housing, that is to say to the closing mechanism, which is made possible by the disassembly of the lid of the lock box. This poses a serious problem from the point of view of the safety of the closure device.

Presentation of the invention

The closure device according to the present invention aims to overcome the aforementioned drawbacks. For this purpose, it is proposed according to the present invention that a device as defined in claim 1. Thus, thanks to the device according to the invention, the latch bolt is made retractable with slamming of the door, so without manipulation of the handle.

According to a preferred embodiment, the latch bolt has a stepped profiled leading end, preferably between 30 ° and 60 °, more preferably between 40 ° and 50 °, the bevel being oriented laterally towards this side which facilitates easier retraction of the latch bolt.

An advantageous embodiment of the device according to the invention is defined in claim 2. The aforementioned control member ensures a reliable and effective bolt control. In addition, the construction of the first and second engagement means is simple and inexpensive.

According to a more particular embodiment of the invention, said adjusting means is formed by a projecting element attached to the lateral surface of the latch bolt. This construction considerably reduces the lateral size of the closure mechanism in the direction of the axes of rotation of the handles. Furthermore, the space due to the return latch bolt is eliminated, since it is housed in the control member thereof. In addition, this arrangement provides effective protection of the biasing means against an external disturbance.

A more specific embodiment is defined in claim 4.

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

Advantageously, there is provided an additional return means cooperating directly with the latch bolt so that it can be brought out and retracted independently of the lug and the door handle.

The arrangement defined in claim 13, and more particularly in claim 14, is very advantageously 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 providing extremely effective locking of the deadbolt.

In addition, thanks to the specific measurement defined in claim 15, with the maintenance of the return means that it receives, any risk of disengagement of the return means out of the locking means subjected to frequent movements back and forth when the lock is used, is thus avoided.

With the measurement defined in claim 16, there is obtained a deadbolt which is adjustable according to the transverse dimensions of the support tube on which the closure device is intended to be mounted. The number of adjustment possibilities depends directly on the number of notches in the deadbolt.

The measurement defined according to claim 17 makes it possible to combine the first and second return means in a single means having two functions, which makes the mounting substantially simpler and can further greatly reduce the size by the elastic return means.

With the measurement defined in claim 18, there is obtained a reduction in the number of holes in the support tube, which provides a significant increase in strength and strength thereof. The safety of the closing device is thus reinforced, 1

To loosen the bushings that are hidden in the support tube, it is necessary to have a suitable 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 single and personal grip means, to obtain a closure device which, once mounted, has a considerable reliability. Thus, in particular, the first and second aforementioned engagement means are each formed by a notch and a complementary projection for forming a tenon-mortise connection. The above is obtained with the measure defined in claim 19.

With the measurement defined in claim 20 and thanks to the integrated structure of the lock housing, in which the cover and the batten are integral body with each other, the lock housing is virtually tamper-proof and the safety of the device of closing is considerably strengthened.

Other advantages and particularities of the closure device according to the invention will emerge from the more detailed description given below of an exemplary embodiment illustrated by means of the appended drawings.

Brief description of the drawings

• Figure 1 shows a partially exploded perspective view of a first embodiment of the closure device according to the invention.
• FIG. 2 represents an exploded perspective view of a second embodiment of the closure device according to the invention.
• Figure 3 illustrates an internal sectional view of the closure device according to the invention showing the operation thereof.
• Figure 4 shows the device according to Figure 1 in the assembled state.
• Figures 5 and 6 show views with variants of an enlarged detail of the device according to Figure 1.
• Figure 6 does not form part of the invention.
• Figures 7 to 9 illustrate different views of another enlarged detail of the closure device according to Figure 2.
• FIG. 9a illustrates the mode of cooperation between the lock part of the device according to FIG. 4, on the one hand, and the striker part of the device according to FIGS. 7 to 9, on the other hand.
• Figures 10 and 11 illustrate a top view of a first variant of the device shown in Figure 2 in the assembled state with incorporation of an additional adjustment element.
• Figures 12 and 13 are views similar to Figures 10 and 11 respectively of a second embodiment of the device.
• Figure 14 illustrates a view similar to Figure 3 of another alternative embodiment of the device according to the invention.
• Figures 14A and 14B illustrate views of a detail of Figure 14 similar to Figures 5 and 6.
• FIG. 15 illustrates different possibilities of combining assemblies of the part of the device shown in FIG. 3 with different housings.
• Figures 16 and 17 illustrate each of the views of a portion of the device according to Figure 10 in the exploded state and respectively mounted.
• FIG. 18 illustrates a view similar to FIG. 16 of the device according to FIG. 12.
• Figure 19 is a representation similar to Figure 15 combining according to the first and respectively the second variant above.
• FIGS. 20a to 20i illustrate the operation of another alternative embodiment of the device similar to FIG. 14.
• Figure 21 illustrates a variant of manipulation of the lock part of the device.

Description

The present invention generally relates to a closure 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 tubular shaped side side as in the example described below and of any size whatsoever.

In Figure 1 is illustrated the lock device which comprises a housing 10 in which is housed the lock 8 with a pallet on which is fixed a lid.

The housing 10 is provided to house a lock mechanism for controlling at least one bolt, as illustrated in FIG. 3. In the example below, a mechanism for controlling a latch bolt 21 and a latch dead bolt 22 each having an elongate shape is described. In particular, the exemplary structure of the mechanism described below allows the transformation of a rotational movement of a control member 65 which is driven by a handle 2, in a translation 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 actuator 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 dead bolt 22 by a key 1, for example introduced into a safety lock 8. However, FIG. 21 illustrates an alternative operation in which the drive is carried out by the action of the user directly by rotation of a key in the lock without handle.

In the closing device, the control member 65 advantageously comprises a wheel 25 which has on its periphery a lever-forming element such as a lug 66. The lug 66 is arranged to engage with a gripping element corresponding element such as a projecting element provided on the latch bolt 21. The projecting element can be completely removable screw type 4 (Figure 5) or form a member 45 incorporated and secured to the bolt 21 (Figure 6) or a element 213, 216 movable within the bolt 21 (Figure 14A). The wheel 25 is arranged substantially concentrically around the nut 18. The wheel 25 further has on its periphery another lug 70 forming a stop for limiting the travel of the wheel. To this end, the support plate 35 has on its leading edge a stop 20 intended to limit the stroke of the stop lug 70 of the wheel. The wheel is secured to the nut 18 by attaching to the bottom thereof to the support plate 35, so as to form an annular groove 68.

An elastic return means 71 is provided to return the latch bolt 21 to its rest position. Advantageously, the aforementioned biasing means 71 allows retraction and exit of the latch bolt without the lug or handle must move. Preferably, the abovementioned biasing means 71 consists of a spring arranged coaxially around the latch bolt. In this regard, the spring 71 advantageously has an oval section contour matching the two mutually opposite side walls 99 of the latch bolt bearing against the projecting element 4; 45; 216 and thus wrapping advantageously around the latch bolt 21, further allowing a reversal of the position of the latch bolt. In addition, thanks to the spring 71 of the latch bolt 21, the latter 21 can be actuated recessed or projecting without the lever 66 or the handle 2 must be moved and / or actuated.

Another biasing means is embodied in the form of a spiral spring 74 winding around the nut 18 in the aforementioned annular groove 68 to act on the wheel 25. In order to ensure a good retention of the spring, a notch 69 is provided on the periphery of the wheel, preferably in the non-useful zone thereof, that is to say outside the ergot zone 72. The notch 69 then serves as housing for a primer 70'of the spring. Preferably, the nut and wheel assembly is arranged between the latch bolts 21 and the latch bolt 22.

Moreover, the thickness of the wheel 25 is smaller than the diameter of the half-turn bolt 21. The spiral spring 74 for its part 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 the bulk of the latter. Preferably, the spiral spring 74 is metallic.

The deadbolt 22 has a double axial alignment of notches 83 and notches 76, 77, 78 respectively. The notches and notches preferably each extend transversely with respect to the axis of the bolt 22. notch and notch profile is virtually identical. The alignment of notches is turned towards the control member 65.

Opposite the alignment of notches 83, a locking member 55 serving as a latch is arranged to slide transversely relative to the direction of sliding of the dead bolt 27, between the latter and the support plate 35. Thus, locking member is formed for example by a sliding wafer 50. On the support plate 35 is provided a guide 51 for transverse sliding of the wafer 50. The wafer 50 preferably has a substantially rectangular shape and thus has a leading edge 48 and a trailing edge 48 'forming a latch ramp. The wafer 50 is provided with a loop 53 protruding with respect to the wafer from the inside of the wafer as shown in FIG. 1. The wafer 50 is slidably received 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 outwardly to engage the notches 83 of the deadbolt. This arrangement of the locking member is particularly advantageous because of its very small size and its reliability.

Another additional return means 39 is provided opposite the loop 53 so as to bring the wafer 50 back to its rest position. This is formed for example by an elongate type of spring with two branches 46, 47 in the form of a hairpin. The arms 46,47 of the spring have a long length so as to ensure an effective return of the wafer in its rest position while not requiring too much pressure on it thanks to the leverage obtained by the length branches 46, 47 of the spring 54, which is preferably also metallic.

The other abovementioned biasing means 39 and 74 are advantageously combined into a single spring 171. Thus, the hairpin spring 39 is connected by one of its branches 47 to the spiral spring 59, at the free end thereof. this. The spring 39 extends outside the annular groove 68, the cylindrical casing 49 of the wheel 25 being advantageously interrupted on a part of its periphery. This allows a convenient passage of the return means 171 as visible in Figure 3. The interruption zone is for example formed by a peripheral recess laterally delimited by two shoulders for a rotation of the wheel 25, despite the presence of the return means 171 remaining practically in place. The aforementioned rotation is thus limited by the shoulders. Thus, the spring 171 according to the invention has a dual function by its action on the latch bolt and on the locking member. The number of parts is reduced, the mounting speed of the closure device increased and reduced size.

Preferably, the loop 53 is arranged on a central axis of the wafer 50 so as to ensure a better balance of the forces acting on it. Advantageously, the loop is stamped from the wafer without removal of material. This greatly enhances the strength and the holding of the loop to the wafer. The loop 53 is attached to the wafer at an inside point thereof and can extend linearly along a determined slope. As can be seen in FIG. 1, however, the loop 53 can also be connected to the plate at two inner points 191, 192 so as to form an eyelet for the branch 46 of the spring 39.

In order to ensure proper safety of the closing device, each bolt 21, 22 has a large length. The bolts 21, 22 are mounted to slide axially in the closure device. To allow sliding bolts, 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 latch bolts 21 and 22, through the tube 19, are arranged mutually opposite on the periphery of the tube 19 and in alignment with the corresponding respective passage 36, 38 in the headrest 7. A support plate 35 is attached perpendicular to the headrest 7 to a longitudinal edge thereof. The shape of the plate 35 is advantageously adapted to the internal shape of the housing 10. Guiding 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 thereof in their axial sliding along the arrow designated by F. A For this purpose, 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 Figure 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.

There is provided a receiving means 120 for the lock, in particular the latch bolt, to which it is specifically adapted, which 120 is intended to be arranged on an opposite post 119 facing the post 19 on which the lock is mounted. More particularly, the aforementioned receiving means 120 comprises a receiving plate 121 in which at least one receiving orifice 122, 123 is provided for each corresponding bolt which is in alignment therewith, as well as a catch plate 125 attached to it and intended to be entered by the user. The perforated receiving plate 121 and the engagement plate 125 form between them an angle α, in particular between 35 and 55 °, preferably approximately 45 °. The engagement plate 125 is provided with a handle member 126 fitted thereon. More particularly, the handle element 126 is made of a synthetic material, preferably applied by injection onto the plate 125.

The aforesaid receiving means 120 functions as both a receiving plate for the introduction of the bolt as well as a locking consolidation means by the presence of notches in which the bolts can be locked, and also of a handle allowing the opening of the latch. second door with a double door. Thus, the keeper receiving means 120 serves both as a receiving plate with a support plate for the handle to push the bolt, locking plate for the bolts, and handle.

The adapter plate 199 also makes it possible to adapt a striker 120 for a square profile 190, 191 to a round profile 192, 193. The aforementioned adapter plate 199 also makes it possible to equalize the asperities present on the tubular sections, thanks to to the hollow embodiment thereof 199 as shown in Figure 19.

Figure 16 illustrates more particularly that the square or rectangular reception keeper serves as a stop and is reversible. Fixing is extremely easy since it uses the same perforations as the lock itself.

For the more specific case of latches for round profiles, as shown in Figure 18, the fixing is effected by collar 267 and no additional hole must be drilled in the profiles.

FIG. 10 illustrates a variant of the closure device comprising a door stop 260 cooperating with a hooking plate (lock-stop of the door) 250 by means of engagement 261 and 251 respectively provided on the corresponding contact surfaces facing each other . The aforesaid engagement means 251, 261 are advantageously constituted by longitudinal grooves extending in the direction of the tubular profiles 190, 290, 191 so that a pre-adjustment can be carried out by appropriate interlocking of the hooking plate 250 and the door stop 260 along the arrow designated by K. Thus one can take into account the size of the tubular profile 190 or 191 on which the closure device must be adapted. This is clearly illustrated in Figures 10 and 11.

Figures 12 and 13 illustrate a similar arrangement for the round profiles where the contact surfaces cooperating with each other by the engagement means 261, 281 of the door stop 280 and the plate respectively. 260, have a rounded shape, so that the adjustment is performed in a rotational movement designated by the arrow J. Thus, it can be taken into account larger or smaller diameters of the tubular profiles 192 and 193 respectively. .

The abovementioned contact surface made in grooves 251 and 261 respectively for the square or round tubular profiles are illustrated in FIGS. 16 and 18, respectively.

Figure 9a clearly illustrates the use of the receiving plate 120 of the bolts 21, 22 of the lock, as a handle 126 for opening the second leaf of a double door.

Advantageously, the latch bolt 21 cooperates directly with the integrated handle 125,126 and has for this purpose a beveled end 72 as illustrated in FIGS. 4 to 6. Preferably, the bevel angle 72 substantially corresponds to the angle α of the integrated handle 126. This will advantageously allow the closing of the corresponding door leaf by simply breaking the door without having to handle the lock. The assembly is also illustrated in FIG. 2 where the guiding plate 301 will be further distinguished.

A damping strip 263, 270 is advantageously provided between the hooking plate 250, 260 and the tubular profile 190, 191; 192 so as to dampen the noise when the door is closed. In addition, it removes any play so that the door is fully immobilized when closed and it is no longer subject to beats, for example in case of wind etc. Preferably, the damping strip is made of a synthetic material.

Thanks to the realization of the gripping means 251, 261 of the abovementioned contact surfaces, and the adjustment K or J that this allows depending on the shapes and / or dimensions of the tubular profiles, a single plate 250 or 260 is still required depending on the shape of the square or round tubular profile. A standard lock device is thus obtained with dimensions that can vary from 40 to 80 mm as appears from FIGS. 10 to 13.

Preferably, the bevelled surface 72 of the free end of the latch bolt 21 is slightly curved so that there is only one line of contact between the bolt and the receiving surface against which it 21 succeeds.

Furthermore, the dead bolt 22 has several notches 76, 77, 78 which are aligned along the longitudinal axis of the bolt 22 while extending substantially transversely relative thereto. The aforesaid notches are intended to cooperate each with a not shown driving cleat of the safety lock 8. Depending on whether the driving cleat engages in one or the other of the notches 76, 77, 78, the bolt 22 will have a shortened or lengthened stroke relative to the headrest 7.

This possibility of adjusting the travel of the dead bolt 22 makes it possible to adapt the lock to tubular profiles 19 of different sizes and sections, such as round, rectangular or square, as illustrated in FIGS. 10 to 13. This constitutes an appreciable advantage. because it allows the adaptation of a single lock to different types of tubular profiles, which greatly facilitates inventory management of such locks. A similar measurement is provided for the latch bolt 21 providing the same advantage of adjustable stroke of the bolt. Thus, the stroke of both the latch bolt 21 and the dead bolt 22 is adjustable.

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

The bushes 91, 92 are engaged in the passages 36, 38 by the aforementioned openings 56, 57 and 58, 59 respectively. In order to ensure a convenient clamping of the sleeves 91, 92 in the passages 36, 38, the bushes 91, 92 are provided at their respective opposite ends, on their periphery, with at least one gripping means such as a notch 93. tightening the bushes 91, 92 in the passages 36, 38 is then effected by means of 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 clamping wrench 97 corresponds substantially to the diameter of the periphery of the end of the bushing which comprises the notch 93. The clamping wrench 97 has at least one end at least one projection 98 intended to cooperate with the Notch 93. Thus, accessibility to the bushings is made more difficult after placement of the latter inside the tube 19.

As can be seen in FIG. 1, the bushings have in the unthreaded zone an enlarged head portion 95 forming a shoulder for retaining the tube 19 against the headrest 7. The fixing by the bushes 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 area between the sockets and the threaded passages increases the bonding stability between the tube 19 and the closure device.

In addition, it is advantageous to provide a particular peripheral arrangement of notches 93 in the bushes 91, 92 each having a particular profile. In the illustrated example, two diametrically opposed notches are provided, each having a rectangular profile. The advantage lies in the fact that the loosening of the sleeves 91, 92 requires a key 97 which is provided with an end having a corresponding profile. This reinforces the safety of the closure device and therefore the reliability thereof, because one can thus customize the sockets and make loosening them only possible for authorized persons.

More particularly, each bushing is hollow axially, the inner wall being of cylindrical shape. Correspondingly, the bolts also have a generally cylindrical shape 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 sleeves indeed form an additional guide for the bolts as shown in Figure 3, thus contributing to their stability.

The second axial alignment of the transverse notches 76, 77, 78 is turned on the opposite side with respect to the latch bolt and to the entrance of the lock as shown in the figures. The notches are arranged to cooperate with an unrepresented bit of the safety lock. Thanks to the presence of several notches, it is possible to adjust the stroke of the deadbolt 6 according to the tube. The number of notches in the deadbolt is a function of the number of notches in it. In the illustrated example, provision is made for example for each notch, that is to say for each stroke adjustment of the bolt, a notch corresponding to a closed position of the dead bolt, that is to say when the one -ci is projecting from the tube as shown in phantom in Figure 4 by the reference A, and a notch corresponding to the open position thereof, that is to say when it is flush with respect to the tube 19 as shown in solid lines in Figure 4 by the reference B. It could however also provide an additional notch notch corresponding to double-turn locks or, more generally, multiple turn.

In the headrest, two openings 171, 172 are provided for the passage of fastening screws 173, 174. A first attachment screw 173 serves to securely attach the headrest with the support plate to the housing 10. In addition, the deadbolt has at a certain height a shoulder 179 leaving the bolt truncated longitudinally on a narrowed area of the bolt. The truncated area extends longitudinally from the inner end of the bolt which is turned towards the lock housing, to the shoulder 179 above.

The second fixing screw 174 is intended to fix the casing 108 of the safety lock to the closing device. To this end, the housing is at the height of the bit, pierced transversely by a tapped opening 175 which is placed opposite a tapped pier pierced 176. By bringing the second fixing screw 174 by the headrest is obtained a connection between the security lock and the headrest which is even stronger than the gripping surface between the fixing screw 174, on the one hand, and the pierced pillar 176 and the transverse hole 175 of the lock, on the other hand, is big. In order to ensure easier mounting of the lock in the closure device, there is provided a retaining tab 177 extending along the lower contour of the lock entrance 106 and being connected to the pierced pillar 176 as illustrated in FIG. Figure 3. The longitudinal recess of the deadbolt permits vertical alignment of the latch bolt and the deadbolt while providing sufficient space for the aforementioned transverse sliding between the dead bolt and the support plate, the plate or the latch. latch. Thus, the closure device is more compact.

A stop rib is provided on the inner face of the headrest, almost facing the center of the nut. The stop rib extends perpendicularly to the longitudinal axis of the headrest 7. It is intended to limit the travel of the wheel in the direction of the protrusion of the latch bolt 21.

The profile of the notches 83 of the dead bolt 22 is adapted to the loop 53 of the locking latch member 55, in particular to the slope 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 dead bolt 22 in the direction of the arrow designated G in Figure 3 and engages therewith.

The lock housing 10 shown in FIG. 1 is in the form of a one-piece body incorporating a cover and a paddle in a six-sided case 11, 12, 13, 14, 15, 16. The case-forming case 10 has one of the faces 16 an opening 33 for receiving a headrest 7 which is independent of the housing itself.

Thanks to the monobloc structure of the housing, a closure device is obtained whose safety is considerably enhanced because the lock 8 is housed in the housing 10 installed in the door. Indeed, the only access to the lock 8 is in the side opening 33 which is closed by the headrest 7. The headrest is blocked in front of the tubular profile 19 on which the closure device is mounted. The lateral opening 33 is thus perfectly inaccessible, which removes any possibility of access to the lock mechanism housed in the housing 10. In addition, said one-piece structure of the housing 10 has 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 housing and the headrest is reduced.

Advantageously, the edge 32 surrounding the opening 33 and the edge of the headrest 7 have a bevelled profile for quick and secure interlocking of one into the other.

The operation of the closure device 5 according to the invention is described below, with the aid of FIG. 3 and FIGS. 20a to 20c. The latch bolt 21 is actuated by one of the handles and the dead bolt 22 by the introduction of a safety key 1 in the entrance of profiled key 3 of one of the rotary cylinders of the safety lock 8. When mounting the closure device, the initial position of each bolt 21, 22 is selected according to the transverse dimensions of the support tube 19. The bolt half -turn 21 is adjusted by positioning it in the desired retracted position relative to the wheel 25. Simply choose the position of the latch bolt 21 always according to the support tube 19 and replace the wheel 25. In this respect, 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 first removing the wheel 25 to obtain in the rest position, the appropriate projection thereof with respect to the edge surface of the support tube.

After release of the handle 2, the latch bolt 21 is automatically returned to its resting position projecting 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 rotated in the same direction, the rotational movement of the wheel being transmitted to the latch bolt 21, so that it is made to perform an axial sliding withdrawal along the arrow indicated by the reference F in Figure 1 and thus bring the latch bolt 21 in the retracted position. The spring, in particular the wound portion 74 thereof, is thus compressed. When the handle is released, the spring 71 relaxes, thus bringing the wheel 65 to its starting position in an opposite direction of rotation. The primer portion 70 located at the free end of the wound portion 74 of the spring 71 serves as an application element 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 winds.

The mechanism for moving the deadbolt 22 is described below. The dead bolt 22 slides axially in the direction of rotation given to the safety key 1, in turn printing a rotational movement along the arrow indicated by the reference H to the safety lock 8 in a known manner. Previously, the dead bolt 22 is adjusted according to the transverse dimensions of the support tube 19 as is the case for the latch bolt 21. The adjustment of the dead bolt 22 is done by selectively positioning one of the notches 76, 77, 78 of the dead bolt 22 with the possibility of adjusting it 22 according to the section of the support tube 19, as well as to reuse the same closure device with support tubes having different transverse dimensions. It is sufficient for this to reposition the deadbolt 22 differently to the safety lock 8.

During its rotation, an element of the radially protruding safety lock, such as a bit, comes into contact with the trailing edge 52 of the wafer 50 serving as latch, which until this moment is in the state of rest and is still engaged by its projecting loop 53 in one of the notches 83 of the dead bolt, then raises it, the dead bolt 22 remaining, at this stage of motion, still immobile. The lifting, against the spring 54, of the wafer 50 forming locking member with respect to the dead bolt 22 causes the loop 53 thereof to gradually disengage from the notch 83 and thus release the dead bolt 22 Thus, by continuing the rotation of the key 1, the bit continues its rotational movement and thus causes the dead bolt 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 facing the projecting loop 53 of the wafer. Under the action of the looped portion 54 of the spring 71, which is compressed, the projecting loop 53 is brought into the notch 83 which is located opposite it. By sliding back to its initial resting position, the plate 50 thus locks the dead bolt 22 in the position in which it was brought by the rotation of the key, namely opening or closing, the case double-turn.

It follows from the foregoing that the position of the notches 83 along the deadbolt 22 is determined by the position of the notch (s) 76, 77, 78 therein. In addition, at each notch 76, 77, 78 advantageously correspond 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 multi-turn locks, additional notches 83 are provided, preferably an additional slot notch 76, 77, 78. It goes without saying that, if necessary, some cuts could be duplicated so as to reduce their number. relative to the number of notches. Furthermore, the width of the notches measured along the axis of the dead bolt 22 relative to the width of the bit is such that there is a clearance between the bit and each notch allowing the movement of the bit in it as described herein. -above.

In order to avoid warping or undesired lateral displacement of the loop portion 54 of the spring 171, the guide eyelet 39 of the dead bolt 22 is provided with a projection 35 arranged to serve as a guide for the free leg. 46 of the loop portion 54 of the spring 171.

The displacement of the dead bolt for different thicknesses of tubular profiles 19 is obtained by the displacement of the projecting element 4 in a certain number of holes provided in the latch bolt 21. The end bevel 72 of this latch allows a more convenient operation of the latter, particularly as to its withdrawal or cooperation with the receiving plate.

The closure device according to the invention comprises a lock that can be used in particular for doors and swinging metal gates, with opening by a handle (Figure 4) or also by the cylinder only (Figure 21), that is to say without handle, and for wrought iron gates, for gates, especially in enclosures garden or sports fields and still for palisades or industrial doors. In addition, the above-mentioned closure devices comprise a lock that is adaptable both for tubular profiles with a flattened square or rectangular section and for profiles with a round section, while being adjustable on profiles of different dimensions as illustrated in FIGS. 10 to 13. In addition, FIG. 19 clearly illustrates how the lock of the closing device of a square to round tubular profile can be easily adapted, simply by the incorporation of an adapter plate 199 for the round section. .

In the device illustrated in FIG. 21, it will be noted that in the aforementioned variant of the closure device without handle 299, the control of the bolts 21 and 22 is discriminated in the following way: the first revolution of the cylinder 106 by manual actuation enters the 22 dead bolt, while the second turn of the cylinder 106 by manual operation enters the latch bolt 21. The fastening of the two latches and latch bolts 21, 22 provides a double-turn adjustable lock so that no handle is needed to close the door.

Furthermore, the mounting of the device on the aforementioned tubular profiles is extremely easy and does not present any risk of loss of strength of the assembly since it suffices to punch two holes in the tubular profile 19 to apply the lock on it. 19. A tool consisting of a perforation gauge and a stepped drill saves precious time in the preparation of tubular profiles for assembly. The holes 56, 58 in the tubular profile 19 are made in a single operation using the aforementioned drill bit.

The closure device adapts to each tubing profile. In addition, since the locks 91, 92 can be moved in a jiffy using the added keys 97, it is possible to reconcile different profiles and dimensions of profiles. In addition, as indicated above, the assembly is extremely easy and fast and can be done in less than a minute by perforating or punching first two holes 56, 58 in the tubular profile 19 then putting the lock 10 on the door, by inserting each of the bolts 21 and 22 in the orifices 56 and 58 that have just been formed and finally fixing said lock 10 with the aid of the added key 97. On the housing is integrated a reinforcement 330 such as illustrated in Figure 15 providing security for the cylinder of the lock so that it can almost no longer be demolished. The reinforcement 330 is advantageously cast into the housing so as to be integral with it. This gives a universal closure device adaptable to all standard base frame with closing mechanism. By applying the aforementioned reinforcements 330, preferably one-piece with the housing 10, it is obtained that the entire length of the cylinder 8 is housed in the housing. The locking of the lock is done through the inside of the tubular profile by means of a latch 91, 92 which passes through the tubular profile of the door.

In the variant illustrated in FIG. 14, the adjustment of the latch bolts illustrated in detail in FIG. 14a and, respectively, of the dead bolt illustrated in detail in FIG. 14b is explained below. By introducing an L key, called BTR, not shown, in a central guide 201 of the latch bolt 210, one can make an adjustment of up to 10mm in the axial direction of the bolt and even beyond. The adjustment of the deadbolt 220 operates in the same way. More particularly, in the latter case, it first unscrews the deadbolt locking screw with the aforementioned L-key. Then the position of the bolt 220 is adjusted by turning the end piece 221 thereof 22 to the right or to the left depending on whether it is desired to adjust the bolt further recessed or on the contrary more protruding. Finally, we screw the aforementioned adjusting screw deadbolt.

The adjustment variant illustrated in Figure 14 provides a continuous adjustment through the internal threaded rod 214 which is provided. The adjusting member 213 cooperates with the latter 214 by sliding on the latter within the latch bolt inside a light 215 determining the stroke of the projecting element 216 intended to cooperate with the lever 66 of the wheel 25. The above details are illustrated in Figure 14a.

The adjustment of the deadbolt 220 is illustrated in FIG. 14b from which it emerges that the deadbolt 220 consists of two parts 221 and 222. The end portion 221 can be moved to a desired fixed position and then actuated by turning it, the L-shaped key mentioned above on a first cone 226 which acts on a second internal cone 224, which spreads for a certain distance 223 then the free end of the fixed part 222 of the bolt 220. Thus, the half bolts 210 and frame 220 according to the variant illustrated in Figure 14 can now be adjusted from the outside by means of an attached key.

A great advantage obtained by the aforementioned continuous adjustment is that it is thus possible to adjust the setting of the bolts of the device without having to disassemble the lock, leaving it in the state mounted on the door itself. The continuous adjustment also makes it possible to slam the door without any manipulation of a lock or handle being required for closing it.

Advantageously, the assembly is made of a completely stainless material. Thus, thanks to the use of exclusively stainless material, such as aluminum, brass and / or stainless steel, the closing device thus obtained is resistant to oxidation wear for a very long duration .

In addition, the closure device described above is unclogable thus making it possible to fully effective closure of any door, because its construction is very robust and very strong attachment, resulting in the fact that no fixing bolt can be undone after closing the door as can be seen for example in FIGS. 21.

FIGS. 20a to 20i illustrate the mode of adjustment of the latch bolts 21 and the latch bolts 22. More particularly, FIGS. 20a to 20c show how to move from an initial adjustment position in an orifice A to another adjustment position of the latch 4 in a different end position C. It should be noted in this regard that, in the engaged position, the insert 4 always adopts the same position relative to the lever-lug 66.

FIGS. 20d to 20f illustrate how to reverse the position of the latch bolt 21 for left-hand or right-hand mounting, so that the beveled free end 71 is in the appropriate position with respect to the receiving plate 2. Figures 20g to 20i illustrate the process of adjusting the deadbolt 22.

Claims (21)

1. Closure device, in particular for a door, comprising

   - a lock (8) provided with a half-turn bolt (21) and arranged to be mounted onto an upright (19) so that the half-turn bolt (21) extends through the upright (19),

   - a face plate (7) having at least one aperture (36),

   - a support plate (35) fixed to the face plate and having, opposite said aperture (36) in the face plate (7), a guide element (37) for the half-turn bolt (21),

   - a nut (18) able to cooperate with at least one handle and a return means (71) intended to act on the half-turn bolt (21), the nut (18) and the return means (71) being arranged to cooperate with the half-turn bolt (21) to slide it in the aperture (36) in the face plate (7) between a retraction position and a projection position wherein it projects over a predetermined distance out of the face plate and further out of said upright (19) when the lock (8) is mounted thereon,

   characterised in that the said lock (8) consists of a safety lock provided with a cylinder, in that a control member (65) is arranged so as to be integral with the nut (18) so as to act on the half-turn bolt (21), in that the half-turn bolt (21) and the control member (65) are respectively provided with first means (4; 216) and second means (66) arranged to cooperate together, the aforementioned first and second means consisting respectively of an adjustment means (4; 216) which enable to adjust said predetermined distance and which are provided on the half-turn bolt (21) between the aperture (36) in the face plate (7) and the guide element (37) and are able to move selectively between a predetermined number of positions on the half-turn bolt (21) which are aligned along the longitudinal axis of the half-turn bolt (21) and in one of which there can be detachably engaged a projecting element of the said first means (4; 216) on the one hand and at least one lug (66) attached to the control member (65) on the other hand, the control member (65) being arranged to act on the projecting element (4; 216) and, through the intermediary of this projecting element, on the half-turn bolt (21) to move the half-turn bolt (21) to its retraction position whilst the return means (71) are arranged to act on the projecting element (4; 216) and, through the intermediary of this projecting element, on the half-turn bolt (21) so as to move the half-turn bolt (21) back to its projection position.
2. Device according to claim 1, characterised in that the aforementioned control member (65) is formed by a ring comprising a cylindrical external profile (49) delimited by two practically parallel edges, the said ring being attached by one of the aforementioned 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 on the external periphery of the aforementioned cylindrical profile (49).
3. Device according to claim 1 or 2, characterised in that the adjustment means (4) is formed by a projecting element attached with respect to the lateral surface of the half-turn bolt (21).
4. Device according to the preceding claim, characterised in that the said lateral surface (99) of the half-turn bolt (21) is provided with a predetermined number of openings (5), in one of which the said element (4) attached so as to project can be detachably engaged.
5. Device according to claim 1 or 2, characterised in that the aforementioned projecting element is formed by a lockable slide (213).
6. Device according to claim 1 or 2, characterised in that the projecting element is formed by a slide (213) able to move continuously in the bolt (210) on a central rod (214) which can be actuated from the outside through an access passage (201) arranged coaxially with the aforementioned rod (214).
7. Device according to any one of the preceding claims, characterised in that there is provided a reception means (120) for the lock, in particular the half-turn bolt (21), to which it is specifically adapted, which (120) is designed so as to be arranged on an opposite upright (119) facing the upright (19) on which the lock (8) is mounted.
8. Device according to the preceding claim, characterised in that the aforementioned reception means (120) comprises a reception plate (121) in which there is provided at least one orifice (122, 123) for receiving a corresponding bolt (21) which is in alignment therewith, as well as a gripping plate (125) attached thereto and designed to be gripped by the user, like a handle.
9. Device according to the preceding claim, characterised in that the perforated reception plate (121) and the gripping plate (125) mutually form an angle (a), in particular between 35 and 55°, preferably approximately 45°.
10. Device according to one of claims 8 or 9, characterised in that the gripping plate (125) is provided with an element forming a handle (126), adapted to it (125).
11. Device according to the preceding claim, characterised in that the handle element (126) is formed from a synthetic material, preferably applied by injection.
12. Device according to any one of claims 7 to 11, characterised in that the aforementioned reception means (120) serves equally well as a reception plate for the introduction of the bolt (21, 22), as a means of consolidating the locking by the presence of notches in which the bolts (21, 22) can be locked and as a handle allowing the opening of the second leaf of a double rotating door.
13. Device according to any one of the preceding claims, characterised in that it comprises:

    - a lock bolt (22) slidably arranged in the aperture in the face plate (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 into the retraction position,

    - the lock bolt (22) having a lateral surface (103) practically parallel to the support plate (35),

    in that the lateral surface (103) of the lock bolt (22) is arranged to cooperate with the locking member (55), and
    in that guidance means are provided on the aforementioned support plate (35) so as to allow a lateral sliding of the locking member (55) with respect to the lock bolt and parallel to the lateral surface (103) thereof (22), between the said lateral surface (103) and the guidance means (51).
14. Closure device according to the preceding claim, characterised in that the lock bolt (22) has a substantially cylindrical profile with a shoulder (179) from which there extends the said lateral surface (103) in a substantially plane fashion and in that the locking member (55) consists of a plate (50) which is adaptable between the said lateral surface (103) of the lock bolt (22) and the guidance means (51) and which has a loop (53) projecting with respect to the plate (50), whilst being attached to the plate (50) at each of its ends, in that the lock bolt (22) has a predetermined number of slots (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 be engaged in one of the slots (83) in the bolt (22) under the action of the aforementioned other additional return means (39).
15. Device according to the preceding claim, characterised in that the loop (53) is arranged in a substantially central fashion on the plate in line with each slot (83).
16. Closure device according to one of claims 7 or 8, characterised in that the bolt (22) has at least two notches (76, 77, 78), which are axially aligned and which i extend transversely with respect to the axis of the bolt (22) opposite the drive catch and practically opposite the slots (83), so as to allow engagement of the drive catch in one of the notches (76, 77, 78).
17. Closure device according to one of claims 14 to 16, characterised 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 spring in the form of a hairpin with two legs (46, 47) and the second return means (74) consisting of a spiral spring wound concentrically around the nut (18) in the aforementioned annular groove (68), one of the legs (47) of the second return means (39) being attached to one of the ends of the first return means (74) and the free end area of the other leg (46) acting on the aforementioned loop (53).
18. Closure device according to any one of claims 6 to 10, characterised in that the face plate (7) is mounted, by means of at least one fixing sleeve (91, 92), on a support tube (19), in particular for a door, which has a given profile and has in it at least one pair of mutually opposed openings (56, 57; 58, 59), each pair being in alignment with the respective aperture (36, 38) provided in the face plate (7) so as to allow the passage of each bolt (21, 22) through the support tube (19), each fixing sleeve (91; 92) being clamped in each aforementioned aperture (36; 38) in the face plate (7), passing through the opposed pair or pairs of openings (56, 57; 58, 59) of the support tube (19).
19. Closure device according to the preceding claim, characterised in that each sleeve (91; 92) has at its free end at least one first engagement means (93) intended to cooperate with an external tightening key (97) provided with at least one second corresponding engagement means (98).
20. Closure device according to any one of the preceding claims, characterised in that it comprises an integral casing (10) having the form of a flattened case provided on one of the lateral faces (16) with an elongate opening (33) arranged to receive the face plate (7).
21. Closure device according to any one of the preceding claims, characterised in that the half-turn bolt has a profiled leading end in a bevel, preferably between 30° and 60°, preferably again between 40° and 50°, the bevel being oriented laterally towards this side which favours an easier retraction of the half-turn bolt.

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