FR2902451A1 - Lock stator fixation device, has fixation clip with tabs released by free half-ends whose lateral half-edges are relative to lateral walls of slot to block tabs in slot and form blocking unit for blocking rotation of clip around lock stator - Google Patents

Abstract

The device has a fixation clip (34), whose ring (36) is provided with two diametrically opposite tabs released by two free half-ends. The free half-ends have two lateral half-edges (54, 56) that extend outwards from a longitudinal slot (22), and another set of two lateral half-edges (58, 60) supported against a bottom (28) of the slot. The lateral half-edges (58, 60) are relative to two opposite lateral walls (24, 26) of the slot to block the tabs in the slot and form a blocking unit for blocking rotation of the fixation clip around a lock stator (10).

Description

Device for fixing a lock stator

  The present invention relates to a fastening device of a lock stator for maintaining said lock stator through an aperture formed in a wall. The wall has a face and a face and it is a question of inserting the lock stator from the face of the place through the opening and to maintain it in a fixed position. The stator consists of a central body of cylindrical symmetry which has a first end forming a shoulder. This shoulder is adapted to come to bear against the face of the place in the periphery of the ajour. The fixing device comprises a clip which has a ring carrying two resiliently flexible and opposite bearing lugs, and the central body has it, two diametrically opposed longitudinal grooves adapted to respectively receive the two support lugs. The fastening clip is then mounted on the stator, so that the ring is secured to the second end of the stator opposite the first end, and the bearing tabs extend through the grooves and towards the shoulder. . In particular, reference may be made to document US Pat. No. 5,435,159, which discloses such a fixing device. The fastening clip is then secured to the stator by two nipples reported in the bottom of the grooves and two orifices in the two opposite tabs, the two nipples being adapted to be engaged respectively in the two orifices. In this way, the bearing lugs which have a free end terminated by a retaining edge are held extended through the grooves so that the retaining edges are at least partially located outside the grooves and facing said shoulder. Thus, these retaining edges will be applied against the upside-down side of said wall in the periphery of the aperture after the stator equipped with the fastening clip has been forced through the aperture causing the legs to sag. support and that these have found their initial positions, when the shoulder of the central body is him, applies against the face back. Consequently, since the fastening clip is completely integral with the stator and the two diametrically opposite retaining edges corresponding to the two support legs are applied in the periphery of the aperture, the stator is held in a fixed position through the 'up to date. However, once the stator is installed, the support legs are relatively mobile with respect to the central body and with respect to each other, so that the fixing clip is not completely rigidly connected to the stator, which causes a game that can be used to force the lock stator and extract it from the wall. A problem which then arises and which the present invention aims to solve is to provide a fastening device which makes it possible to stiffen the connection between the support lugs and the central body, without impairing the flexibility of this lug. support. In order to solve this problem, and according to a first aspect, the present invention provides a device for fixing a lock stator, said stator having a substantially cylindrical central body and two opposite ends, one of said two ends having a shoulder and said central body having at least one longitudinal groove which extends between said two ends, and which has two opposite side walls and a bottom, said device comprising a fixing clip adapted to be mounted on said stator, said clip of fastener 25 having a ring provided with at least one support lug, said ring being adapted to be secured to the other of said two opposite ends so as to maintain said lug extended through said groove and oriented towards said shoulder, said lug bearing having a free end which has a retaining edge and two lateral edges, one desd ites slices extending inside said groove, while the other said slices extends outside said groove and said retaining edge extending opposite said shoulder, said device having locking means of said clip fastening around said stator; according to the invention, said free end is split into two free half-ends, said two free half-ends having two half-lateral slices adapted to extend outside said groove and two opposite half-side slices adapted to bear against said bottom and respectively opposite said two opposite side walls of said groove to lock said lug in said groove and form said locking means in rotation.

  Thus, a feature of the invention lies in the form

  the two free half-ends which are obviously held in a fixed position relative to one another and which then make it possible to form two lateral half-slices able to bear, via the edges they respectively define, on said bottom and coming to be embedded respectively in the two rabbets

  15 opposed, formed by the bottom and the opposite side walls, when the stator equipped with the fastening clip is forced through the ajour and that the support legs are deformed in torsion. Indeed, when the stator is forced into the ajour with the fastening clip, the two opposite half-side slices which extend inclinedly along the stator come to rest in

  20 the edge of the aperture, which causes, as the progress of the stator through the aperture, the opposite rotation of the two free half-ends and thereby, while said edges are driven in friction against the bottom, the spacing of the two opposite half-side slices, one of the other. Thus, the deformation of the two half-free ends is

  25 symmetrical so that the efforts exerted on the support leg compensate and do not affect the ring. The support lug is locked in rotation in the groove around the central body, because the two half-side edges are able to abut against the opposite side walls, which also allows rotation of the locking

  30 ring. In addition, said tab is advantageously split into two half-legs so that the two free half-ends are more flexible relative to the ring and also relative to each other.

  In addition, said ring advantageously defining a mean cylinder, said half-legs extend from said ring away substantially from said average cylinder and away from each other. Thus, the half-tabs, which are generally made of an elastically deformable material, are capable of being deformed independently of one another. Preferably, said two half-tabs have two opposite lateral edges which respectively terminate. by a projecting wing; the projecting wings defining said two opposite half-side slices. Thanks to the wings

  projecting forces, the bearing forces of the two opposite half-side slices are greater because the bearing surface is less for the same effort, and therefore the two half-ends are more rigidly connected to the central body. Moreover, said fastening clip is made in one piece from

  15 elastically deformable metal, for example stainless steel spring. In addition, said ring is split to allow its opening and the insertion of the stator. Then, the ring returns to its original shape and comes to grip the end of the central body on which it comes to hang.

  According to one embodiment of the invention, particularly

  Advantageously, said central body has two diametrically opposed longitudinal grooves and the ring is provided with two opposite bearing lugs adapted to extend respectively in said longitudinal grooves. In this way, the two opposite support lugs which respectively have two free half-ends and which form

  Together then four retaining half-edges ensure optimum fixation of the stator in the aperture. In addition, when the stator equipped with the fastening clip is inserted through the aperture, the forces then exerted on the two diametrically opposite bearing tabs are convergent and symmetrical with respect to the axis of the stator, which facilitates this insertion.

  Preferably, said other of said two ends has a groove adapted to receive said ring which then encloses the central body at the bottom of the groove. In this way, the ring is totally blocked with respect to the stator. In addition, said longitudinal groove has a depth which decreases from said other of said two ends towards said one of said two ends, and the cross section of the central body near the groove is smaller than the right section of the shoulder. In this way, the stator equipped with the clip, has a substantially frustoconical envelope tapered from the shoulder to the groove and thus, it is more easily introduced through the opening.

  According to another aspect, the present invention provides a fastening clip for a lock stator, said fastening clip having a ring

  provided with at least one support lug, said ring defining a mean cylinder, said at least one bearing lug extending from said ring substantially away from said middle cylinder, said bearing lug having a free end which has a retaining edge and two lateral edges, one of said slices being brought closer to said

  Medium cylinder, while the other of said slices is spaced from said average cylinder; according to the invention, said free end is split into two free half-ends, said two free half-ends having two opposite half-lateral slices spaced from said middle cylinder and two opposite half-lateral slices close said

20 medium cylinder.

  Other features and advantages of the invention will emerge on reading the following description of a particular embodiment of the invention, given by way of indication but not limitation, with reference to the accompanying drawings in which:

  Figure 1 is a schematic perspective view of a lock stator adapted to a fastener according to the invention;

  Figure 2 is a schematic perspective view of a fastener clip adapted to cooperate with the lock stator shown in Figure 1;

  Figure 3 is a schematic perspective view of an assembly, stator / fastening clip integral with a wall; and, Figure 4 is a schematic top view of the assembly shown in Figure 3.

  Figure 1 shows a lock stator 10, in rear view. It comprises a central body 12, a first end 14 whose cross section is greater than that of the central body 12 so as to form a shoulder 16, and a second end 18 in which is formed a groove 20. The central body 12 has a first longitudinal groove 22 which appears in the Figure and a second diametrically opposite longitudinal groove which it does not appear on the

  Figure. These two longitudinal grooves, 22, extend in an axial direction, from the shoulder 16 to the groove 20.

  The characteristics of the longitudinal groove 22 which will appear in this Figure 1 will be described. However, the second diametrically opposite groove has exactly the same characteristics and is

  15 symmetrical of the first with respect to an axial plane.

  The longitudinal groove 22 has two opposite lateral walls 24, 26 and a bottom 28. This bottom 28 has a portion of cylindrical symmetry 30 located towards the groove 20 and whose director is a circle, and a frustoconical portion of symmetry 32 which is extends to the shoulder 16.

  We will return to the lock stator 10 in support of Figures 3 and 4, and in its mode of cooperation with a fastening clip 34 which will now be described with reference to Figure 2. This clip fastening 34, cut and formed in a stainless steel spring, has a ring 36 in which is formed a slot 38. The latter is made

  25 in a V-shape to center the two ends that it defines, one with respect to the other. This ring 36 defines a mean cylinder 40 shown in dashed lines and having an axis of symmetry A, and it has two diametrically opposed tabs 42, 44. These two tabs 42, 44 are respectively split into two half-legs 46, 48 which

  30 terminate in two free half-ends 50, 52. In addition, the two free half-ends 50, 52 have two opposing lateral half-slices 54, 56 and two opposite lateral half-slices 58, 60 and two half-free ends. retaining edges 62, 64. In addition, the two opposite half-lateral slices 58, 60 respectively define two edges 59 and 61 facing inwards, or towards the average cylinder 40. Furthermore, the two half-legs 46, 48 of each of the two diametrically opposite tabs 42, 44, extend along average lines D1, D2, from the ring 36 substantially away from the average cylinder 40, and each respectively deviating from the other. In addition, the two half-legs 46, 48 are substantially deformed in torsion respectively about their average straight lines D1, D2, so that

  the two opposite half-side slices 54, 56 are spaced apart with respect to the cylinder 40, whereas, conversely, the two opposite half-side slices 58, 60 are close to the cylinder 40 In addition, the opposite lateral edges of the two diametrically opposite tabs 42, 44 have recesses 66, 68

  15 revealing wings bordered by the two opposite half-side slices 58, 60.

  Referring now to Figure 3, which illustrates the mode of cooperation of the lock stator 10 with the fastening clip 34 to make the lock stator 10 integral with a wall 70. Through this wall 70

  20 is made an ajour 72 through which the stator 10. The wall 70 has a rear face 74, and a front face 76. In addition, the ring 36 of the fastening clip 34 is engaged in the groove 20 of the stator 10 so that the two half-legs 46, 48 are extended through the longitudinal groove 22, and the retaining half-edges 62, 64 bear against the rear face 74

  25 in the perimeter of the aperture 72. In this way, it is understood that the fastening clip 34 being integral with the stator 10, the latter is blocked through the aperture 72. Indeed, if one refers to the 4, where we find the support leg 42 split into half-legs 46, 48, we note that the shoulder 16 of the first end 14 is against the face

  30 before 76 in the periphery of the aperture 72, while the two retaining half-edges 62, 64 bear against the rear face 74 and the ring 34 is engaged in the groove 20.

  Referring to Figure 3, in which the two opposite half-side slices 58, 60 of the two half-free ends 50, 52 extend substantially along the two opposite side walls 24, 26 and their corresponding edges 59, 61 being in abutment against the frustoconical portion of symmetry 32 of the bottom 28 of the longitudinal groove 22. Thus, the two opposite half-side slices 58, 60 extend inside the longitudinal groove 22, while the two half-slices side 54, 56 extend outside the groove 22 so that the retaining half-edges 62, 64 can also extend

  outside the groove 22 to bear against the rear face 74 in the periphery of the aperture 72.

  Before the lock stator 10 is made integral with the wall 70, the fastening clip 34 is mounted on the lock stator 10. In addition, the ring 36 has an inside diameter substantially smaller than the

  The groove bottom diameter 20 of the stator 10 so that the ring 36 which is elastically deformable, can grip the stator by force after having been opened and then released into the groove 20. In addition, the opposite half-side slices 58, 60 of the two diametrically opposed legs 42, 44 are diametrically and respectively

  20 spaced apart from each other with respect to the dimensions of the frustoconical portion 32. In this way, after having separated the two diametrically opposite tabs 42, 44 from one another to mount the fastening clip 34 on the stator 10, they are released and the respective edges 59, 61 opposite half-side slices 58, 60 of the two legs

  25 opposite diametrically 42, 44 are pressed against the frustoconical portion 32. Furthermore, the opposite half-side slices 58, 60 respectively follow at a distance the two opposite side walls 24, 26. It will also be noted that the half retaining edges 62, 64 are then spaced from said shoulder 16 by an average distance

  Around the value of the thickness of the wall 70.

  Then, the stator 10 thus equipped with the fastening clip 34, is inserted through the aperture 72 from the front face 76, and the two lateral half-edges facing each other 54, 56 then come into friction against the inner edges of the 72. By then forcing the lock stator 10 further through the opening 72, the two free half-ends 50, 52 are then forced inwardly of the groove 22 while the half-legs 46, 48 are deformed elastically in torsion respectively about their average straight lines D1, D2 and that the opposite half-side slices 58, 60 deviate from each other to come, at most, against the opposite side walls 24, 26. When the opposite half-side slices 58, 60 deviate, their respective edges 59, 61 are driven into

  friction against the frustoconical portion 32.

  Then, when the shoulder 16 comes to bear against the front face 76 in the periphery of the opening, the side half-edges facing 54, 56 then escape the edge of the aperture 72 and resume their initial position in s extending out of the groove 22. The retaining half-edges 62,

  At least partially project from the longitudinal groove 22 and come to bear against the rear face 74 in the periphery of the aperture 72, whereas the opposite lateral half-slices 58,60 deviate substantially. opposite side walls 24, 26 of the groove 22 and therefore, approaches one another. Their edge

  Respective 59, 61 are also substantially close to one another and they remain in force against the wall of the frustoconical portion 32.

  Of course, and in a completely symmetrical manner, the two half-legs 46, 48 of the other diametrically opposite tab 44 cooperate with each other.

  Same way both with the diametrically opposite longitudinal groove of the stator 10 and with the wall 70 and the aperture 72.

  Therefore, the half-legs 46, 48 are sufficiently deformable to allow the fixing of the lock stator 10 in the opening 72 and thanks to their half-free ends 50, 52 which remain in engagement

  30 in the groove 22, the fastening clip 34 is rigidly connected to the stator 10 so that the breaking of the lock carried by the stator 10 is made less easy.

Claims (10)

  1. Device for fixing a lock stator (10), said stator having a substantially cylindrical central body (12) and two opposite ends (14, 18), one of said two ends (14) having a shoulder (16). ) and said central body (12) having at least one longitudinal groove (22) which extends between said two ends, and which has two opposite side walls (24, 26) and a bottom (28), said device comprising a fastening clip (34) adapted to be mounted on said stator (10), said fastening clip having a ring (36) provided with at least one support lug (42, 44), said ring being adapted to be secured to at the other of said two opposite ends so as to maintain said tab (42, 44) extended through said groove (22) and facing said shoulder (16), said support leg (42, 44) having one end free (50, 52) having a retaining edge (62, 64) and two slices sides (54, 56, 58, 60), one of said slices (58, 60) extending into said groove (22), while the other of said slices (54, 56) extends outside said groove (22) 20 and said retaining edge (62, 64) extending opposite said shoulder, said device having means for locking said fixing clip around said stator; characterized in that said free end is split into two free half-ends (50, 52), said two free half-ends having two facing half-edges (54, 56) adapted to extend out of said groove (22) and two opposite half-side slices (58, 60) adapted to bear against said bottom (28) and respectively facing said two opposite side walls (24, 26) of said groove (22) to block said tab (42, 44) in said groove (22) and forming said rotational locking means.   2. Fastening device according to claim 1, characterized in that said tab (42, 44) is split into two half-legs (46, 48).   3. Fastening device according to claim 2, characterized in that said ring (36) defining an average cylinder (40), said half-legs (46, 48) extend from said ring substantially apart from said average cylinder and moving away from each other.   4. Fastening device according to claim 2 or 3, characterized in that said two half-legs (46, 48) have two opposite lateral edges which end respectively with a projecting wing, the projecting wings defining said two half-legs. opposite side slices (58, 60). io   5. Fastening device according to any one of claims 1 to 4, characterized in that said fastening clip (34) is made in one piece of elastically deformable metal.   6. Fastening device according to claim 5, characterized in that said ring (36) is slotted to allow its opening. 15   7. Fastening device according to any one of claims 1 to 6, characterized in that said central body (12) has two longitudinal grooves (22) diametrically opposite and in that said ring (36) is provided with two legs d opposed supports (42, 44) adapted to extend respectively in said longitudinal grooves (22). 20   8. Fastening device according to any one of claims 1 to 7, characterized in that said other of said two ends (18) has a groove (20) adapted to receive said ring (36).   Fastening device according to any one of claims 1 to 8, characterized in that said longitudinal groove (22) has a depth which decreases from said other of said two ends (18) to said one of said two ends (14). ).   Fastening clip (34) for lock stator (10), said fastening clip having a ring (36) provided with at least one support lug (42, 44), said ring defining an average cylinder (40). ), said at least one bearing lug extending from said ring substantially away from said middle cylinder (40), said bearing lug (42, 44) having a free end (50, 52) which has a retaining edge (62, 64) and two side edges (54, 56, 58, 60), one of said slices (58, 60) being close to said middle cylinder (40), while the other of said slices (54, 56) is spaced from said average cylinder; characterized in that said free end is split into two free half-ends (50, 52), said two free half-ends having two opposing lateral half-slices (54, 56) spaced apart from said average cylinder (40) and two half opposite side slices (58, 60) close to said average cylinder. io