EP0997598B1 - Screw guide apparatus for espagnolette or espagnolette lock - Google Patents

Description

The invention relates to a device of the screw-guide type provided capable of being attached, by fixing means, to the rear of a cremone bolt or cremone bolt while ensuring a sliding connection of a rod of maneuvering said headrest, this device comprising, on the one hand, at least one perforated guide stud intended to communicate with an opening in said headrest for the passage of a fixing screw and, on the other hand, means of fastening provided capable of cooperating with the side walls of a recess groove formed in the rebate of an opening frame or of a fixed frame corresponding to a carpentry of the door, window or similar type, in order to ensure the maintenance in the longitudinal and transverse position of the lever or lever-lock in said groove.
The present invention will find its application in the field of building hardware and relates, in particular, to locking fittings of the bolt type or lever-bolt type.

We already know multiple fittings of locking of the bolt type or bolt-lock which have particular that from a main box hosting a appropriate control mechanism, a user is able, by via a handle or a control button or still from a key element, to communicate a displacement to a or operating rods extending above and / or below of this central box. This or these rods of maneuver intervene, in turn, on organs of locking intended to cooperate with strikes for the locking of a door, window or the like.

In this regard, it is usual to come and house these fittings of locking, of the bolt type or the bolt-lock type, in a recessed groove machined into the rebate of the opening frame, possibly the frame, such a door, window or other.

In such conditions, rebate of the carpentry is still planned a deeper notching for the reception of the central box, which is made integral with the rear face a headrest which also extends above and / or below of this case so as to cover and protect the operating rod or rods disposed in said groove Recessed. For this purpose, the latter usually presents a T-section, in the sense that at the bottom it is substantially adjusted to the section of an operating rod, while at its mouth this groove has, on either side of the longitudinal recesses to accommodate the headrest, always of greater width.

Such a cremone bolt or bolt lock is usually reported on the joinery by means of fixing screws coming through openings provided for this purpose at the headrest for come to be lodged in the bottom of the embedding groove in passing through the operating rod which, to the right of these fixing screws, includes oblong openings guaranteeing of their mobility.

In this regard, we have seen that it was opportune ensure a certain guidance of these fixing screws at the rear of the headrest without which one or the other of them is likely, in the event of incorrect assembly, to prevent the free displacement of an operating rod.

For this purpose the cremone bolts or locks are equipped, usually screw guide type devices consisting of a part attached to the rear of the headrest and comprising minus a perforated guide stud communicating with an opening in this headrest for the passage of a fixing screw. This guide pad in turn passes through the oblong opening accordingly arranged in the operating rod.

In fact, such a screw guide can still provide a connection sliding from an operating rod to the headrest which is particularly advantageous for storage and transport, before assembly, of these bolts or bolts, but also this facilitates prepositioning, relative to other, different elements making up such fittings of locking. Indeed, such screw guides prevent, in these conditions, that an operating rod, under the effect of its flexibility does not deviate from the headrest often resistance more important.

In fact, to perform the aforementioned function, the guide pad overcomes a base substantially the same width as that an operating rod, in any case, greater than the width oblong opening in the latter for allow the passage of this guide pad. So once the screw guide attached to the back of a headrest, its base and the latter sandwich such a rod maneuver.

The connection between this screw guide and the headrest is usually obtained by riveting. Especially a riveting stud is arranged above a longitudinal boss overcoming it also, the aforementioned base. On this longitudinal boss comes here, again, the operating rod. Insofar where the screw guide stud and the riveting stud are located, necessarily, in the same alignment, parallel to the axis longitudinal of the operating rod and the headrest, this can pose the problem of the orientation of this device guide screw when making it integral with the headrest. In effect, an improper orientation prevents the guide pin to position themselves at the right of the opening in said headrest for the passage of the fixing screw. Also for remedy this problem we imagined to make this screw guide symmetrical with respect to the riveting stud avoiding the operator to be concerned with its orientation during assembly and assembly of the cremone bolt or bolt lock.

Finally, such a screw guide can still fill, if necessary another function which consists in immobilizing, temporarily an operating rod in a position determined to allow proper assembly of the mechanism control of the lever or lever-bolt and the mounting of this one on the carpentry.

Also, such screw guides include, under these conditions, temporary immobilization means of the rod maneuver in relation to the headrest. So, for example, such means usually arise in the context of a metal screw guide in a deformable blade provided with a lug blocking that is made to cooperate, precisely by deformation of the aforementioned blade, with a positioning notch provided in the wall of the oblong opening of the operating rod during these assembly and assembly operations of the cremone bolt or lock-bolt. When you first order this last, the action exerted by the control mechanism on the or the operating rods results in the breaking of this locking pin so as to release, thus, this or these operating rods.

It will already be noted that such devices of the type screw guides are made of zamak molding, therefore of a material rigid. This often makes it impossible to test the operation of a cremone bolt or bolt-lock once out of the chain assembly as soon as the immobilization means rods have been activated in the since this rigidity makes reverse manipulation impossible consisting in deactivating these means without producing their rupture.

This exposed it has been observed that the mounting of a cremone bolt or lock-bolt in a recessed groove provided for this rebate effect of an opening frame, ask some difficulties as it is relatively difficult to both to keep in a good position the cremone bolt or cremone bolt and also secure it by means of a screw that it, too, must be kept at the same time as we proceed to screwing proper.

Apart from this problem, the carpenter, ensuring the installation of these locking fittings, encounter some difficulties in preposition the different ones relative to each other cremone bolt or cremone bolt, angle gear, extension, compass headrest, side lock, etc ... without screwing, to check their fit and everything particularly that of the operating rods which, often, are likely to be cross-checked.

It is also known, from document EP-A-0 056 484, a device for fixing a headrest assembly plus rod operation of a lever or lever-bolt in a groove of substantially "T" section formed in joinery rebate designed from metal or plastic profiles. This device borrows a U-shaped structure and comprises, starting from a bottom extending parallel to the headrest and the operating rod, two parallel wings oriented in direction of the bottom of the groove. In these parallel wings are cut of the anchor blades coming away from the median plane of the device, from the free end of said parallel wings.

Between the bottom of this device, having a threaded opening for receiving a fixing screw, and the headrest is interposed a ring forming a spacer and crossing a oblong opening in the operating rod to allow the free movement of the latter at the rear of said headrest.

The device according to the invention is intended to be able to satisfy certain constraints linked to its manufacture making it easier, without meter that this device is intended to be applicable to any type of carpentry, whether it is wooden, aluminum, PVC or other, regardless of the depth of the mounting groove.

To this end, the invention relates to a device of the screw guide type. provided capable of being attached, by fixing means, at the rear of a cremone bolt or bolt lock while ensuring a sliding link of a rod maneuvering said headrest, this device comprising, share, at least one perforated guide stud intended to communicate with an opening in said headrest for the passage of a screw fixing and, secondly, hooking means provided capable of cooperating with side walls of a recess groove made in the rebate of a chassis opening or a sleeping frame corresponding to a door, window or similar joinery in order to maintain the longitudinal and transverse position of the bolt or lock bolt in said groove, characterized by the fact that said fixing means are defined by at least one riveting stud provided capable of being inserted in a perforation made for this purpose in the headrest, said riveting stud being in the form of a expandable mandrel defined by at least two jaws of which the free end is provided capable of being inserted into the perforation of the headrest, between these jaws coming engage an expansion rod made integral by a breakable bond from either end of the expandable mandrel in a ready-to-use layout engaged between the latter's jaws.

According to a preferred embodiment, this type device screw guide comprises a base provided, at least, with the stud perforated guide, and longitudinal edges of which extend vertically hooking tabs between which is able to register the operating rod, these hooking tabs going substantially apart, one on the other from said base to respect, at their free end, a spacing greater than the width of the recess groove in the joinery in which comes to be committed, in force, this device.

While the screw guide type devices were made, the more frequently, in metallic material, more particularly in zamak, it was imagined to design them in plastic which has the advantage of being able to give the tongues aforementioned attachment greater elasticity while allowing the production of the part by molding. In end of account, this allows the device to be positioned by clipping in the mounting groove.

Other features of the present invention will become apparent from course of the description which follows relating to illustrative examples given.

• la figure 1 est une représentation schématisée et en élévation du dispositif conforme à l'invention exécuté selon un premier mode de réalisation, sur cette figure étant représenté, en outre, le positionnement de la têtière et d'une tringle de manoeuvre par rapport à ce dispositif ;
• la figure 2 est une représentation schématisée et en plan du dispositif représenté dans la figure 1 ;
• la figure 3 est une représentation schématisée et en coupe selon III-III de la figure 1, sur cette figure 3 ayant encore été superposée la vue en coupe très schématisée d'une rainure d'encastrement d'une menuiserie en bois, ceci à titre strictement indicatif ;
• la figure 4 est une représentation schématisée en coupe selon IV-IV de la figure 1 ;
• la figure 5 est une représentation schématisée et en plan d'un dispositif de type guide-vis selon l'invention, exécuté selon un second mode de réalisation ;
• la figure 6 est une représentation schématisée en coupe selon VI-VI de la figure 5 ;
• la figure 7 est une représentation schématisée et en coupe selon VII-VII de la figure 5.

The understanding of this description will be facilitated by referring to the attached drawings in which:

• Figure 1 is a schematic representation in elevation of the device according to the invention executed according to a first embodiment, in this figure being shown, in addition, the positioning of the headrest and an operating rod relative to this device;
• Figure 2 is a schematic and plan view of the device shown in Figure 1;
• Figure 3 is a schematic representation in section on III-III of Figure 1, in this Figure 3 having been superimposed the very schematic sectional view of a recess groove of a wooden carpentry, this as strictly indicative;
• Figure 4 is a schematic sectional representation along IV-IV of Figure 1;
• Figure 5 is a schematic plan view of a screw guide type device according to the invention, executed according to a second embodiment;
• Figure 6 is a schematic sectional representation along VI-VI of Figure 5;
• FIG. 7 is a diagrammatic representation in section along VII-VII of FIG. 5.

As shown in the figures of the attached drawings, the present invention relates, more particularly, to the field locking fittings of the bolt type or lever-bolt type and relates to a device of the screw guide type 1 provided capable of being attached to the back of a headrest 2 of such a lever or cremone bolt, while ensuring a sliding connection between an operating rod 3 and said headrest 2, at the rear of it.

In this regard, the bolts or bolts-locks to which applies the present invention are those intended to take position in a recess groove 4 (as illustrated, schematically, in Figure 3), provided at the rebate of an opening frame, or even a sleeping frame, door, window or the like.

As visible in this figure 3, such a groove 4 has a section substantially in the form of T. Thus, at the bottom of the groove it is of width 5 plus low, adjusted to the width of the operating rod 3, while at its mouth 6, the side walls 7, 8, of this embedding groove 4 have recesses 9, 10 which gives it a width 11 more important adjusted to the width of the headrest 2.

Consequently, the screw guide type device 1, reported in the back of this headrest 2, also takes position, in the recess groove 4, more particularly in the part of width 5 reduced.

Such a device 1 comprises at least one guide pad 12 perforated communicating with an opening 13 in the headrest 2 for the passage of a fixing screw intended to make in solidarity with the latter 14.

In the longitudinal alignment of this guide pad 12 and, therefore, parallel to the axis 15 of the operating rod 3, this device 1 further comprises fixing means 16 allowing it to be secured, precisely, to the headrest 2. Substantially, these fixing means 16 are presented usually in the form of at least one riveting stud 17 provided able to fit into a perforation 18 provided for this effect in the headrest 2.

As can be seen in the two corresponding embodiments, respectively, in FIGS. 1 to 4 and 5 to 7 of the attached drawings, such a screw guide type device 1 can be provided with more than one guide pad 12, 12A for the passage of a attachment communicating with openings 13, 13A in the headrest 2. Furthermore, in the first embodiment corresponding to FIGS. 1 to 4, such guide pads 12, 12A may adopt a symmetrical arrangement with respect to a transverse median plane 19 passing through the riveting stud 17, this symmetrical arrangement having the advantage of facilitating the positioning of the device 1 relative to the headrest 2.

If this riveting stud 17 has been shown in a circular section in the context of this embodiment corresponding to Figures 1 to 4, it will be noted that in the second mode of embodiment illustrated in Figures 5 to 7, it can adopt a other particularly rectangular shape, which allows it to perform, in addition, the rotating immobilization function of this screw guide type device 1 relative to the headrest 2.

However, and as shown in Figures 1 to 4, this function can still be ensured by at least one stud positioning 20, 20A preferably located in the alignment of the guide pad 12, 12A and the riveting pad 17, this positioning pad 20, 20A coming to be inserted in a cavity 21, 21A provided for this purpose in the headrest 2. Again in case of plurality of positioning pads 20, 20A these may adopt a symmetrical arrangement with respect to said transverse median plane 19.

With regard to the guide pads 12, 12A of the riveting pad 17 or where appropriate also of the positioning pad (s) 20, 20A, these extend from a longitudinal base 22, coming to be superimposed on the operating rod 3 extending to the back of the headrest 2. By the way, the width 23 of this base 22 is provided at most equal to width 5 at the bottom of mounting groove 4 and greater than the width 24 of a oblong light 25 provided in the rod 3 for the passage of the various aforementioned studs. This oblong light 25 is dimensioned, of course, to allow the rod maneuver 3 to move relative to this type device screw guide 1, to move from its locking position to its unlocking position and vice versa.

It will be noted that, as the case may be, the guide stud (s) 12, 12A possibly the positioning pads 20, 20A are fitted in or on a boss 47 under which the base extends 22 and the top 48 of which defines a support plan for the headrest 2.

According to the invention, this screw guide type device 1 receives, still, attachment means 26 provided capable of cooperating with the side walls 7, 8 of the embedding groove 4 in view maintain the longitudinal and transverse position of the bolt or lock bolt, in particular of the headrest 2 of the latter in said embedding groove 4.

According to a preferred embodiment, these means attachment 26 are in the form of tabs attachment 27 extending from the longitudinal edges 28, 29 from the base 22 in the direction of the headrest 2. These tabs 27 between which comes the operating rod 3 significantly move away from each other, at their free end 30, 31, so as to respect, at this level, between them a distance 32 slightly greater than the width 5 of the mounting groove 4. In this way, when position the device 1 therein said tabs 27 are repelled by their elastic nature, towards the longitudinal median plane 33 of this device 1 under the action of the side walls 7, 8 of this groove 4. This results in translation blockage in the latter of this device 1 and therefore of the lever or lock-bolt through the headrest 2.

In the end, the free ends 30, 31 of these tabs attachment 27 are provided capable, in cooperation with side walls 7, 8 of the groove 4, to form a step for prevent the bolt or bolt lock from falling out of this embedding groove 4.

We understand, of course, that to allow these tabs attachment 27 to form step in the aforementioned conditions their height 34 must be less than the depth of the reduced width portion 5 of the embedding groove 4. This has been represented in the embodiment corresponding to Figures 1 to 4. However, as shown in Figures 5 to 7, the attachment tabs 27 can still be provided one or more retaining pins 35 provided capable of playing this step role in cooperation with the side walls 7, 8 of the recess groove 4. In this regard, whether the hooking tabs 27 or retaining pins 35 which define steps, they are designed to be able to cooperate with the walls of a recess groove which whatever the dimensions that such a groove can take.

Advantageously, the attachment means 26 are still supplemented by retaining pins 36 projecting at the level at least one of the longitudinal edges 28, 29 of the base 22. These retaining pins 36 actually come to be embedded in the side walls 7, 8 of the embedding groove 4.

As stated above, the tabs attachment 27 are preferably of the elastic type. A such elasticity can result from the material composing the device 1.

In this regard, it is designed, preferably, by molding by injection in synthetic material.

It has also been imagined to make it easier to assemble this device 1 on a headrest 2 through the riveting stud 17.

Thus, if this riveting stud has so far consisted of a stud which, when engaged in the perforation 18 corresponding in headrest 2, is expanded by crushing therefore by displacement of material, requiring a tool suitable for this, we imagined to design this stud riveting 17 in the form of an expandable mandrel 37. This is defined by at least two jaws 38, 39 of which the free end 40 is provided capable of being inserted into the perforation 18 of the headrest 2. Between these jaws 38, 39 being engaged a rod expansion 41.

Ultimately, this expansion rod 41 is defined by section 42 significantly greater than the persistent bore 43 between jaws 38, 39 of semi-circular shape such that shown in Figures 1 to 4 corresponding to the first embodiment or further apart 43A by two jaws 38, 39 parallel as can be seen in the Figures 5 to 7.

In case of design of the screw guide type device 1 by molding, the expansion rod 41 is molded simultaneously in an arrangement ready to be engaged between the jaws 38, 39 of the mandrel 37 and made integral with one or other of the ends 44, 44A of the latter by a breakable connection 46. There still, this can be obtained by the molding operation. Thus, this breakable bond 46 may be the consequence of molding of the expansion rod 41 in a very slightly engaged in the mandrel 37.

Finally, as already mentioned in the introductory part of the description, such a screw guide type device 1 also has function of temporarily blocking the operating rod 3 with respect to the headrest 2 to facilitate, as the case may be, the assembly of the parts of the bolt or bolt-lock or still the assembly of the latter on the joinery. Also, a such a screw guide type device 1 usually receives temporary immobilization means 49 of this rod operation 3.

According to an embodiment illustrated in FIGS. 1 to 4, said immobilization means 49 are in the form of locking pistons 50, 50A capable of being projecting from the side 51 of the base 22 opposite the operating rod 3 in view of being housed in a notch provided for this purpose in at least one of the longitudinal edges 52 of the oblong lumen 25 corresponding to this operating rod 3.

Again, if a single blocking piston 50, 50A is able ensure the translational function of the operating rod 3, the device of the screw guide type 1 comprises one, preferably two, arranged symmetrically with respect to the riveting stud 17 avoiding the operator having to be worry about the orientation of this device 1 at the time of its mounting on the headrest 2.

In the context of the embodiment corresponding to Figures 5 at 7, these immobilization means 49 are in the form a tongue 53 defined by molding in a lumen 54 at level of the base 22 more particularly at the level of the boss 47 overcoming it. This tongue 53 capable of being pushed back, elastically, in an active position in which a retaining finger 55, with which it is equipped, is capable of come and engage in the aforementioned notch of the rod operation 3. The tongue 53 is thus held in this active position by means of a holding tab 56, here again, resulting from the molding process of the screw guide device 1. In fact, to bring the tongue 53 into its position active, it is necessary to force it to cross said leg holding 56 which will ensure its maintenance in this position.

We understand, of course, that the low resistance provided by a locking piston 50, 50A or a retaining finger 55 associated with the tongue 53, allows the operating rod 3 to easily cut one or the other during the first control of the lever or lever-bolt.

In the same way as the expansion rod 41, the pistons of blocking 50, 50A can be achieved through the process of molding of the device 1. In this regard, as it is to immobilize the operating rod 3 relative to its headrest 2, once these elements have been assembled, in particular through the device 1, this or these locking pistons 50, 50A can be molded in a retracted position relative to side 51 of the base 22 facing the operating rod 3. These pistons blocking 50, 50A are temporarily maintained in this position, again through a breakable link 60, obtained by molding, similar to that 46 holding the expansion rod 41 at the entrance to the mandrel 37.

Ultimately, as is evident from the description which precedes, the present invention makes it possible to respond in a manner advantageous to the problem posed insofar as the device for not only does the screw guide type guarantee good position of the cremone bolt or cremone bolt at the level of the rack during the installation of the fixing screws, but, moreover, it facilitates the assembly of this lever or espagnolette lock. Thus, riveting operations requiring a riveter station and an associated work table on the assembly lines are avoided. Being able to perform the device by molding in material makes it less expensive and contributes to a reduction in the operating noise of the cremone bolt or bolt lock.

It appears from the above that the present invention represents clear progress in the field.

Claims (13)

1. Screw-guide device designed capable of being inserted, through fastening means (16), against the back of a face-plate (2) of an espagnolette or espagnolette-lock while ensuring a sliding connection of an operating rod (3) to said face-plate (2), this device (1) including, on the one hand, at least one perforated guiding stud (12, 12A) aimed at communicating with an opening (13, 13A) in said face-plate (2) for the passing through of a fastening screw and, on the other hand, coupling means (26) designed capable of co-operating with side walls (7, 8) of an encasing groove (4) provided for in the fillister of a door- or window-frame or also of a sash-frame corresponding to a carpentry (14) such as a door, window or the like with a view to ensuring maintaining the espagnolette or espagnolette-lock in longitudinal and transversal position in said groove, characterised in that said fastening means (16) are defined by at least one riveting stud (17) designed capable of engaging into a bore (18) provided for this purpose in the face-plate (2), said riveting stud (17) being in the form of an expanding mandrel (37) defined by at least two jaws (38, 39) the free end (40) of which is designed capable of being inserted into the bore (18) of the face-plate (2), between these jaws (38, 39) inserting an expansion rod (41) made integral, by means of a shearable connection (46), with either end (44, 44 A) of the expanding mandrel (37) according to an arrangement ready to be inserted between the jaws (38, 39) of the latter.
2. Device according to claim 1, characterised in that it includes a base plate (22) provided at least with the perforated guiding stud (12, 12A), the coupling means (26) being in the form of coupling tongues (27) extending from the longitudinal edges (28, 29) of this base plate (22) towards the face-plate (2), these coupling tongues (27), between which the operating rod (3) is inscribed, substantiantially separating from each other at their free end (30, 31) so as to maintain between them, at this level, a distance (32) slightly larger than the width (5) of the encasing groove (4).
3. Device according to claim 2, characterised in that the coupling tongues (27) are defined of an elastic nature.
4. Device according to any of claims 2 and 3, characterised in that the free ends (30, 31) of the coupling tongues (27) are designed capable, in co-operation with the side walls (7, 8) of the encasing groove (4), of forming a step once said device (1) is inserted in the latter.
5. Device according to any of claims 2 with 4, characterised in that the coupling tongues (27) are provided with one or more retaining pins (35) designed capable of forming a step in co-operation with the side walls (7, 8) of the encasing groove (4), once
   said device (1) is inserted in the latter.
6. Device according to any of claims 2 to 5, characterised in that the coupling means (26) are completed with retaining spines (36) protruding at the level of at least one of the longitudinal edges (28, 29) of the base plate (22) so as to be capable of co-operating with the side walls (7, 8) of the encasing groove (4).
7. Device according to any of the preceding claims, characterised in that it is made out of moulded synthetic material.
8. Device according to claim 1, characterised in that the riveting stud (17) is defined with a parallellepipedic cross-section, so as to be capable of ensuring the immobilisation in rotation of the device (1) with respect to the face-plate (2).
9. Device according to any of the preceding claims, characterised in that it includes at least one positioning stud (20, 20A) located in the alignment of the guiding stud (12, 12A) and of a riveting stud (17), this positioning stud (20, 20A) inserting into a cavity (21, 21A) provided for this purpose in the face-plate (2).
10. Device according to any of claims 2 to 3, characterised in that it includes a boss (47) under which extends the base plate (22) and the top of which (48) defines a resting plane for the face-plate (2).
11. Device according to any of the preceding claims, characterised in that it includes means for temporarily immobilising (45) the operating rod (3) with respect to the face-plate (2).
12. Device according to claims 2 and 11, characterised in that the immobilisation means (49) are in the form of blocking pistons (50, 50A) capable of being protruding on the side (51) of the base plate (22) in front of the operating rod (3), this or these blocking pistons (50, 50A) being maintained temporarily in a retracted position with respect to said side (51), through a shearable connection (60).
13. Device according to claims 2 and 11, characterised in that the immobilisation means (49) are in the form of a tongue (53) formed through moulding in a slot (54) of the base plate (22), in particular at the level of a boss (47) crowning the latter, this tongue (53) being designed capable of being elastically pushed back into an active position in which a retaining finger (55) it is provided with is capable of co-operating with the operating rod (3), this tongue (53) being maintained in this active position through a maintaining lug (56).

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