FR2787493A1 - CREMONE TYPE LOCKING HARDWARE - Google Patents

Abstract

The invention relates to a locking fitting of the cremone type comprising a housing (2) for housing a drive mechanism (3) comprising a follower (4) which engages with a rack associated with a rod. maneuver (7) extending above and / or below this housing (2). According to the invention, this housing (2) is defined by a main housing (12) and an auxiliary housing (13), said follower (4) being mounted in rotation in the latter which is provided capable of taking position in a reservation (14) adapted in the main housing (12) so as to bring the teeth of the follower (4) into cooperation with said rack ( 6) either directly or through an intermediate drive part (15).

Description

The invention relates to a bolt-type locking fitting

  comprising a housing for housing a drive mechanism comprising a follower provided with a toothing provided capable of coming to mesh with a rack associated directly or through a bridge with an operating rod extending beyond

  above and / or below this housing.

  The present invention will find its application in the field

of the building hardware.

  In fact, most type lock fittings

  cremone bolt meet the above description.

  Thus, such a cremone bolt is defined by a housing accommodating a drive mechanism constituted, essentially, by a follower provided with a hub rotatably mounted in this housing and having, in the axis, a through opening for the reception of a square for operating a handle or a control button through which a user is able to ensure the

  command to lock or unlock this lever.

  For this, said follower is provided with a toothing engaging with a rack associated directly or by means of a bridge with an operating rod extending

  above and / or below the housing.

  In particular, this rack can be arranged at the level

  of the section, introduced into this case, of an operating rod.

  It may also be that the drive mechanism uses a bridge at which said rack is provided, this bridge, mounted sliding in the housing, transmitting its movement to at least one operating rod. It should be noted that these maneuvering rod-rod connection modes are found both in the case of single-lever and bidirectional cremones, that is to say capable of communicating displacements in two rods in

opposite directions.

  This drive mechanism can still receive a key element for controlling this or these operating rods, or even

  to lock them in the locked position.

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  In any case, such cremone bolts are usually installed in a groove provided for this purpose in the rebate of a

  door, window or the like.

  Furthermore, to the right of the opening in the follower for the reception of the operating square, the amount or possibly the cross member of this opening, housing the casing of this lever comprises an opening allowing the passage of this operating square. In this regard, it will be observed, in particular, that the distance (often called follower dimension) separating the plane of the rebate from the axis of the opening in the follower is liable to vary according to the type of opening to which we have to do and / or the type of box or control button used. Also, it is usual to manufacture cremones which are distinguished, basically, only at the level of this dimension taking into account, however, that it influences,

  directly, the depth of the case.

  Furthermore, as far as o, in order to always communicate the same stroke to an operating rod for a rotation of a determined angle of the follower, the section of the latter is necessarily constant so that the elements of the housing housing the transmission members movement of this follower to the operating rods must be adapted to this variable dimension of the axis of the follower.

  Ultimately, as is evident from the description which

  precedes, a certain number of parts which are found at the height of the case of a cremone bolt are affected by this variable dimension of the axis of the follower with respect to the front edge of said case. This obliges the manufacturer to conduct separate manufacturing management of these different parts, not to mention that this has repercussions on the importance of the stock which this manufacturer must have in order to be able to meet the demands of his customers. Of course, this problem

  storage is found at the level of these customers.

  The object of the present invention is to respond to this problem encountered by these manufacturers of cremone bolts through a solution which allows them, not only, to reduce the number of

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  parts to be manufactured, but also to respond, with greater ease, to the demands of their customers to the extent that it is possible for them to have in stock sub-assemblies which, by assembly, can give rise to a lever which the follower responds to a given rating. To this end, the invention relates to a lock fitting of the lever type comprising a housing for the housing of a drive mechanism comprising a nut rotatably mounted in said housing and provided with a toothing provided adapted to come to mesh on a rack associated, directly or through an easel, with an operating rod extending above and / or below this housing, said follower comprising a hub having an opening for receiving a square for operating a handle or a control button, characterized in that said housing is defined by a main housing and an auxiliary housing, said follower being rotatably mounted in said auxiliary housing which is provided capable of taking position in a suitable reservation in the main housing so as to bring the teeth of the follower into cooperation with said rack, either directly or through a center piece ment

  intermediate forming shim thickness.

  According to a particular embodiment, the main housing and the auxiliary housing are made of synthetic material and are made integral with one another by gluing or by welding

high frequency.

  According to a second embodiment, the main housing includes fastening means provided capable of cooperating with

  additional fixing means associated with the auxiliary box.

  Advantageously, the fixing means and / or the complementary fixing means are in the form of riveting lugs provided capable of cooperating with suitable openings defining the complementary fixing means and / or said

fixing means.

  The advantages resulting from the present invention consist in that the basic structure of a cremone bolt remains unchanged whatever

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  that either the dimension respected by the follower insofar as this dimension of the follower depends on the size of the auxiliary box in which it is previously mounted and which is then added to this basic structure of the cremone bolt, in particular to the main housing of the latter. Thus, if the manufacturer is obliged to have in his stocks, complete cremones, distinct according to the rating respected by the follower, it is enough for him, now, to carry out the manufacture and assembly of the parts defining the still identical basic structure of these cremones and to which it can, on request, associate a small auxiliary box receiving the follower and on which depends the rating respected by the latter. If it is true that these boxes, called auxiliary, differ according to the final dimension respected by the follower compared to the front edge of the cremone bolt, their storage is easier to manage in the case of small parts therefore

space-saving.

  Other objects and advantages of the present invention

  will appear during the description which follows relating to

  to an embodiment which is given only by way of example

indicative and not limiting.

  Understanding this description will be facilitated by

  Referring to the attached drawing in which: - Figure 1 is a schematic representation in elevation of a cremone bolt according to the invention; - Figure 2 is a schematic representation in elevation of a cremone bolt which differs from that shown in Figure 1 through the auxiliary housing giving the follower a different rating; - Figure 3 corresponds to an elevational representation of a cremone bolt as illustrated in Figure 1, the housing being shown in an exploded form; - Figure 4 is a representation similar to Figure 3 and

  corresponding to a cremone bolt as illustrated in figure 2.

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  As shown in the figures of the attached drawing, the present invention relates to a locking fitting of the lever type. Thus, such a cremone bolt i comprises a housing 2 for housing a drive mechanism 3 comprising, essentially, a nut 4 rotatably mounted in this housing 2 and provided with a toothing 5 capable of cooperating with a rack 6 associated, as shown here, directly with an operating rod 7 extending above and below

this box 2.

  In this regard, it should be noted that this rack 6 could also be associated with an easel serving as an intermediate transmission member capable of reflecting the movement.

  communicated through the follower 4 to the operating rod 7.

  In addition, although a cremone bolt with a monodirectional operating rod is described, this cremone bolt could still receive two separate operating rods, extending, respectively, above and below the casing 2 and coming to move in opposite directions under the follower control 4. In fact, in this case the drive mechanism 3 still receives and in known manner a reversing pinion allowing

  this displacement in opposition of the two operating rods.

  It will be noted, moreover, that the follower 4 comprises a hub 8 pierced with an opening 9 for the reception of the operating square

  a handle or a control button that can be manipulated by the user.

  Note that the front and rear walls 10 of the housing themselves have an opening 11 for the passage of this operating square, or even for the pivoting reception of the hub 8

corresponding to the follower 4.

  In fact, according to the invention, this casing 2 of the cremone bolt 1 is subdivided into a main casing 12 and an auxiliary casing 13, the latter being more particularly defined capable of pivotally accommodating the follower 4, while being able to take position in a reservation 14 adapted in the main housing 12, this in such a way as to bring in cooperation the

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  toothing 5 of the follower 4 with the rack 6, either directly as shown in FIGS. 1 and 3, or through

  a drive piece 15 forming a shim.

  According to a preferred embodiment, the teeth 5 of the follower 4 will be brought to cooperate, directly, with the rack 6 when it comes to respecting the dimension 16 of the follower 4 the smallest. It will be recalled that this follower dimension 16 corresponds, usually, to the distance separating the axis 17 from the latter relative to the plane 18 of the rebate, for example the amount of an opening provided adapted to receive the cremone bolt 1. As for the intermediate drive part 15 it consists, in fact, of a section of rack with double toothing 20, 21 able to cooperate, on the one hand, with the toothing 5 of the follower 4 and with the rack 6. Substantially, this part 15 creates an extra thickness 22 with respect to the latter, which corresponds to the differential between the smallest dimension 16 and the necessarily greater dimension 16A. Note that the auxiliary box 13 is itself dimensioned in

  function of this dimension 16 or 16A of the follower 4.

  According to the invention, the main box 12 receives fixing means 23 provided capable of cooperating with complementary fixing means 24 associated with the auxiliary box 13 in order to

make them united.

  By way of example, such fixing means 23 and / or the complementary fixing means 24 may be in the form of riveting lugs provided capable of cooperating with corresponding openings coming to define, respectively, the complementary fixing means 24 and / or the fixing means 23. The latter can also be in the form of simple interlocking means making it possible to make the auxiliary box 13 integral with the main box 12, when these are made of synthetic material, either by gluing or through

  soldering, high frequency type.

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  In conclusion, the present invention comes to respond, advantageously, to the problem posed. In particular, it is no longer necessary for the manufacturer to carry out the management of the production of several separate cremone bolts insofar as their follower rating is different, since it now suffices for him to manage the manufacture of a basic structure of a cremone bolt to which one comes, then, to add an auxiliary element slightly bulky giving rise to a cremone bolt having a dimension of

well defined follower.

  Consequently, this manufacturer results in a simplified management of manufacturing and storage of parts, not to mention that

  gains in flexibility to adapt to customer demand.

  Although the invention has been described with reference to a particular embodiment, it is understood that it is in no way limited thereto and that it is possible to make various modifications to the forms, materials and combinations of these. various elements,

  without departing from the scope and spirit of the invention.

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Claims (5)

Claims   1. Locking gear of the lever type (1) comprising a housing (2) for housing a drive mechanism (3) comprising a follower (4) provided with a toothing (5) provided capable of coming s' mesh on a rack (6) associated directly or   across an easel to an operating rod (7) extending over   above and / or below this case (2), said follower (4) comprising a hub (8) having an opening (9) for receiving a square for operating a handle or a button control, characterized in that said housing (2) is defined by a main housing (12) and an auxiliary housing (13), said follower (4) being rotatably mounted in said auxiliary housing (13) which is provided capable of take position in a reservation (14) adapted in the main housing (12) so as to bring in cooperation the teeth (5) of the follower (4) with said rack (6), either directly or through a piece of 'training   intermediate (15) forming a shim.   2. Lock fitting according to claim 1, characterized in that the main housing (12) and the auxiliary housing (13) are made of synthetic material and   are joined to each other by gluing or welding.   3. Lock fitting according to any one of   claims i and 2, characterized in that the housing   main (12) comprises fixing means (23) provided capable of cooperating with complementary fixing means (24) associated to the auxiliary unit (13).   4. Locking fitting according to claim 4, characterized in that the fixing means (23) and / or the complementary fixing means (24) are in the form of riveting lugs provided capable of cooperating with suitable openings defining the complementary fixing means (24)   and / or, respectively, said fixing means (23).   5. Lock fitting according to any one of   previous claims, characterized in that the part 9 2787493   intermediate drive (15) consists of a rack section with double toothing (20, 21) capable of cooperating, on the one hand, with the toothing (5) of the follower (4) and with the rack (6), this intermediate drive part (15) being defined as capable of creating an additional thickness (22) relative to said rack (6).