FR2777969A1 - COLLAR FOR TIGHTENING ELONGATE OBJECTS - Google Patents

Abstract

In said collar, a first tab (3) has, parallel to an oblong hole (4), parallel ridges (9) of identical configuration extending transversely to said hole (4). A second tab (5) has at least one rib (10) which also extends transversely to said hole (4) and whose configuration largely corresponds to that of said ridges (9). The ridges (9) and the rib (s) (10) are formed by bilateral undulations of the legs (3, 5), and / or are formed obliquely relative to the longitudinal direction of the hole (4).

Description

COLLAR FOR TIGHTENING ELONGATE OBJECTS

  The present invention relates to a clamp collar

  to enclose elongated objects such as pipes or

  cables, comprising a particularly metallic tightening tape

  that, which forms an approximately circular arch in the closed state of the collar, and comprises a first tab projecting tangentially beyond the arch and provided with an oblong hole, as well as a second tab provided with a hole and protruding from said arch, substantially at right angles, collar into which a screw can be introduced through the holes; the first tab is provided on its face facing the second tab, next to the oblong hole and over at least part of the length of said oblong hole, with parallel grooves of cross-sectional configuration

  identical transverse, extending transversely

  bearing in the longitudinal direction of the oblong hole; and the second tab has, on its face turned towards the first tab, at least one rib which extends transversely to the longitudinal direction of the oblong hole, at the same angle as

  striations, and has a cross-sectional configuration

  dirty corresponding, to a large extent, to the configuration

  of cross section of said striations.

  Such a clamp can, for example, be used

  used to grip pipes or cables of different diameters

  rents, the perimeter of the arch is then modified by putting

  the ribs of the tab, provided with the hole, engaged with different

  your streaks on the other leg before the screw is locked.

  In a known clamp of this kind (GB-A-759,179), the ribs and ridges extend rectilinear in the axial direction of said collar, and only on the faces of the two tabs which are turned towards one another. other. Thus, the two legs can by themselves be warped in a way

  relatively easy, for example when the weight of the object

  tight acts towards the free end of said legs,

  or in the direction of a distance from the wall to which the collar

  binding is fixed by means of the screw. Admittedly, it is possible to choose the material of the collar, in particular in the region of the legs, thicker than in the region of the arch, or else to produce the assembly of said collar in a very rigid material and resistant to bending. However, this increases the amount of material used and the costs of the collar, in particular

  if we take into account the very large numbers of parts in

  what such necklaces are produced.

  The object of the invention is to provide a collar for

  rabies of the type mentioned in the introduction, which exhibits greater flexural rigidity in the region of the legs, without

  have to increase the amount of material used.

  According to the invention, this object is achieved by the fact that the ridges and the rib (s) are formed by

  bilateral undulations of the legs.

  This solution provides the advantage that bilateral undulations of the legs increase the rigidity of the latter to bending, also vis-à-vis bending forces tending to veil the clamp around

  an axis parallel to the longitudinal direction of the oblong hole.

  In this case, the material constituting respectively the collar

  or the tightening tape can be presented as a metal sheet

  relatively thin which can simply be dry

  tioned from a longer strip, then stamped and shaped, the undulations can then be imprinted, in

  said ribbon, with a relatively modes deformation work-

  you. The bilateral undulations of the legs offer the additional advantage of allowing the interposition, between the second leg and a wall to which the collar is fixed by means of the

  screw, of an underlying layer endowed with the elasticity of the rubber

  chouc and intended to dampen vibrations, said undulations-

  tions preventing a transverse shift of said sub-layer

adjacent to the pipe.

  The striations - and, correspondingly, the rib (s) can, of course, be arranged at right angles to the longitudinal direction of the oblong hole. However, it is more conducive for said striations to be arranged at an angle relative to the longitudinal direction of said hole.

  oblong. In this form, they also increase the rigidity

  said legs to bending around an axis extending transversely with respect to the longitudinal direction of the hole

  oblong. In this case, the streaks and the rib (s) may

  wind also be provided only on the faces of the legs which

are facing each other.

  Preferably, the thickness of the tightening tape is

  aunt over its entire length. Therefore, also in the region of the corrugations, the thickness of the ribbon is not greater than in the other regions of said ribbon, which maintains

  the small amount of material used.

  Certainly, it is possible to spare single streaks-

  ment on one of the sides of the oblong hole, and to shape the rib (s) only in the corresponding region, on one of the sides of the hole of the second leg. Preferably, however, the ridges are formed on either side of the oblong hole, so that the first tab has rigidity when

as much bending as possible.

  For the same reason, it can be made so that at least one rib is formed on the face of the second leg which faces the first leg, on either side of a plane perpendicular to said second leg and coinciding with

  the longitudinal direction of the oblong hole.

  The bilateral stripes can then be arranged at equal spacings, and the stripes located on one

  sides of the plane can be offset, in the long direction

  gitudinal of the oblong hole, with respect to the striations located on the other side of said plane. This allows, with greater

  finely structured, an adaptation of the circumference of the

  of the clamp at the perimeter, respectively at the diameter

  meter of the object or objects enclosed, for example of more

  several thin cables which are jointly enclosed by said collar. To obtain this adaptation in more precise staggerings, it suffices that the rib (s), turned (s) towards the striations formed on one of the sides of the o5long hole, is (are) engaged (s) with these streaks, while the or

  the rib (s), facing towards the ridges formed on the other

  be next to said oblong hole, little (fri) t rest on the sides or

  the crests of undulations which delimit these striations.

  The relative offset of the ridges located on either side preferably corresponds to half the spacing between ridges, measured in the direction of the plane. This allows a division of the staging over half the length

ripples.

  When one or more rib (s) is (are) provided (s) on both sides of the above-mentioned plane, perpendicular to the second

  leg, it can also be made so that the nerves

  vehicle (s) located on one side of the plane itself

  offset (s), with respect to the rib (s) located on the other side of said plane, by half the spacing between

  striations measured in the direction of said plane.

  It is also favorable that a plate, provided with a third hole aligned with the hole in the second tab, is located on the face of said second tab which is turned away from the first tab, and that said plate covers, by lateral wings, the lateral edges of said second tab and also, in the closed state of the collar, the lateral edges of said first tab. This plate not only increases the rigidity of the legs to flexion, but also opposes relative lateral sliding of the two legs in particular.

  when the striations, located on both sides of the above plane

  tiated, are mutually offset in the longitudinal direction

  dinal of said plan. In addition, said plate can prevent a

  possibly too strong compression of the ribs and wavy

  tions of the legs, under the action of the screw, when the wings approach the wall to which the collar is fixed by means

of said screw.

  In addition, it can be arranged that the roll bar

  seals a lining of a material endowed with the elasticity of the rubber

  chouc, which covers its internal face and surrounds its edges; and

  that the plate is composed of two sections substantially perpetual

  dicular to each other, one of which has the third hole and lateral wings, and the other of which is provided with a deformed imprint which engages between the edges of said lining, and

  is applied against said edges. This angled plate increases

  additionally lie the stiffness of the legs against

  warping, and also helps prevent slippage

  relative lateral position of said legs.

  An underlying layer, absorbing vibrations, can also be attached to the face of the first tab which

  is turned away from the second leg.

  The invention will now be described in more detail, by way of non-limiting examples, with reference to the appended drawing in which: FIG. 1 is a perspective illustration of a first embodiment of a conforming clamp to the invention, in the open state, devoid of screws; Figure 2 shows the collar according to Figure 1 under a

  slightly modified shape, with a hose clamped in the posi-

  integration tion; Figure 3a is an axial section of another example of

  production of a necklace in accordance with the invention, with a dry view

  matic in plan of the legs; Figure 3b is a schematic plan view of the lower tab in Figure 3a; Figure 4a is an axial section of a fourth embodiment of a collar according to the invention, with schematic plan view of the legs; Figure 4b is a schematic plan view of the lower tab in Figure 4a; and FIG. 5 shows the collar according to FIGS. 4a and 4b, provided with a lining made of a material endowed with the elasticity of the

  rubber, and a bent plate to rigidify

  additional tion and the axial stop of the relative position of the legs, in a position in which said collar

  grips an elongated object, for example a pipe, the clamp screw

  associated ge is not however represented, with a view to dlari-

pride the illustration.

  The clamp according to FIG. 1 comprises a metal clamp 1 and, in the closed state of said collar, an approximately circular arch 2; a first tab 3 projecting tangentially beyond the arch 2, and provided with an oblong hole 4 extending tangentially to said arch 2; as well as a second tab 5 protruding from the arch 2, substantially at a right angle, and provided with a circular hole 6. A screw 7 according to FIG. 2 can be introduced through the holes 4, 6, in order to tighten the collar around one or more elongated object (s), such as pipes or cables, and to fix it simultaneously to a wall 8 (FIG. 2) or to a similar structure. On its face facing the second tab 5, next to the oblong hole 4, more precisely on either side of said hole 4

  and over at least part of its length, the first

  leg 3 has parallel ridges 9 of configuration

  identical cross-section. Said ridges 9 extend perpendicular to the longitudinal direction of the

oblong hole 4.

  The second tab 5 has, on its face facing the

  first leg 3, at least one rib 10 which extends transversely

  dirty with respect to the longitudinal direction of the oblong hole 4, at the same angle as the ridges 9, and has a corresponding cross-sectional configuration, in a

  large extent to the cross-sectional configuration of the

  said striations 9. The rib 10 is also formed by an on-

  bilateral dulation, that is to say by a striation on one of the faces, and by a protuberance on the other face of the second

tab 5.

  An underlying layer 11 of a material endowed with the elasticity of rubber, for example polypropylene, EPDM, polychloroprene or similar materials, can be

  fixed on the face of the first tab 3 which is turned to the op-

  second leg 5, for example by vulcanization, by

  bonding or by a concordance of shapes, in order to

shot the vibrations.

  Depending on the diameter or perimeter of the objects to be

  tighten, rib 10 can be engaged with different ridges 9 mutually aligned on either side of the hole

  oblong 4, so as to adapt the periphery of the arch 2 to the perimeter-

  be considered object or objects to be respective-

  enclosed. In the sequence, the screw 7 can be engaged

  through hole 6 and 4, inserted in a tapped hole

  corresponding to the wall 8, then blocked.

  The production of the ridges 9 and the rib 10, obtained by corrugations, offers the advantage consisting of:

  that the legs are relatively rigid in bending, preventing

  sing a twist around an axis parallel to the longitu-

  dinal of the oblong hole 4, without having to increase the thickness of the tightening tape in the region of the said tabs 3, 5, with respect to the thickness in the region of the arch 2, because the bilateral undulation practically exerts a stiffening effect in the vicinity of the crests and troughs of the undulations. Said undulations are approximately sinusoidal, that is to say

  that the bends are circular, so that

pruning is largely avoided.

  The exemplary embodiment according to FIG. 2 differs from that according to FIG. 1, essentially only by the fact that the tab 3 is provided, at its end facing away from it.

  of the arch 2 of the tightening tape 1, of an extension segment

  ment 12 folded down towards its side facing away from the tab 5.

  This segment 12 prevents the clamping screw 7 from bending the tab 3 in the direction of the wall 8 when a clamped object 13 (a pipe, in this case) has a large diameter such as the tab 5

  is, through its hole 6, near the radial end-

outer oblong hole 4.

  Opposite the embodiment according to the figure

  1, that according to FIGS. 3a and 3b is differentiated for the es

  sentiel only by the fact that, instead of a single rib 10 according to FIG. 1, two ribs 10 plus have been provided

  short spares, on the face of the second leg 5 which is turned

  born opposite the first leg 3, on either side of a plane perpendicular to said second leg 5 and coinciding with the longitudinal direction of the oblong hole 4. These ribs 10 are mutually offset by half the streak spacing 9, measured in the direction of the above-mentioned plane. When the legs 3 and 5 are then pressed against each other by means of the clamping screw 7, one of the ribs 10 of the leg 5

  enters a streak 9 of the paw 3, while the other ner-

  vure 10 rests on the ripple crest between two neighboring ridges 9. In other words, only one of the two ribs 10 is each time engaged with one of the ridges 9. This is sufficient to stop the relative position of the legs 3 and 5, but nevertheless makes it possible to stagger the periphery of the arch 2 with greater finesse than in the exemplary embodiments of FIGS. 1 and 2, with a view to adaptation to different perimeters or diameters of the object 13 or of the objects to be enclosed. Instead of two ribs 10, in accordance with FIG. 3a, it is also possible to provide several ribs on either side of the mentioned plane, and to arrange the ribs located on one of the sides of said plane, with respect to to the ribs located on the other side of this plane, according to half the spacing between ridges measured in the direction of said

  plan. Instead of the offset representing half of the space-

  between streaks, an offset can also be provided

  another fraction of this spacing.

  The example of embodiment according to FIGS. 4a and 4b differs in turn from that according to FIGS. 3a and 3b,

  by the fact that several ribs 10 illustrated schematically-

  ment in the form of lines are formed, on either side of the mentioned plane, on the face of the tab 5 which is turned towards the tab 3; and that the ribs 10 located on one side of the plane are offset, with respect to the ribs 10 located on the other side of this plane, by half of the spacing between the ridges 9 measured in the direction of said plane, and are furthermore arranged obliquely to the longitudinal direction

  of the oblong hole 4, just like said striations 9, more precise-

  ment at an angle of about 25 to 35, preferably about 30; in this case, both the ridges 9 and the ribs are inclined in opposite directions to each other on either side of the above-mentioned plane, in the manner of a fishbone pattern. In addition, the ridges 9 and ribs 10 parallel and

  adjacent, located on one side of the plane, are all mut

  tually distant from the same spacing as the striations 9 and

  the ribs 10 located on the other side of said plane.

  Certainly, in the example of embodiment according to the fig-

  res 4a and 4b, the ridges 9 arranged on either side of the above-mentioned plane are not offset from one another in the longitudinal direction of the oblong hole 4; however, it is also possible that the ridges 9, located on one side of the plane, are offset from the ridges 9 located on the other side of said plane, in the longitudinal direction of said hole 4,

  so as to authorize, with finesse of staggering, an adaptation

  at different perimeters of the object or objects to be

  tighten. The oblique ridges 9 and ribs 10, in accordance with FIGS. 4a and 4b, also offer the advantage of increasing the rigidity of the legs 3 and 5 in bending, not only around an axis parallel to the longitudinal direction of the oblong hole. 4, but also around an axis which is perpendicular to the aforementioned axis, and extends parallel to the plane of said legs 3, 5. The only difference, between the embodiment according to FIG. 5 and that of after FIGS. 4a and 4b, consists in that a plate 14, provided with a circular hole 15 aligned with the circular hole 6, is located on the face of the second tab 5 which is turned away from the first leg 3; and in that said plate 14 covers, by lateral wings 16, the lateral edges of said second tab 5 and also, in the state

  closed of the clamp, the lateral edges of said pre-

  mière patte 3. Said wings 16 can also make sail-

  binds, beyond the lateral edges of the first tab 3, by a distance such that they extend to the wall 8 or similar structure, and bear against the latter when tightening the screw 7. This collar also has

  a lining 17 made of a material endowed with the elasticity of the rubber

  chouc, which covers the internal face of the roll bar 2 and encircles the edges. The plate 14 is composed of two sections 18 and 19 substantially perpendicular to each other, among which one, 18, is provided with the hole 15 and lateral wings 16, and

  the other section 19 is provided with a deformed imprint 20 engages

  giant between the edges of the lining 17, and applied against these edges. In this way, after the legs 3, 5 and the plate 14 have been secured by the screw 7 passing through the holes 4, 6 and

  , said plate 14 prohibits, on the one hand, a sliding

  latif said legs 3, 5 and increases, on the other hand, the rigidity of said legs 3 and 5 to bending, vis-à-vis themselves and also vis-à-vis the arch 2. When the wings 16 approach wall 8, so that they bear

  against it when the screw 7 is blocked, they prevent if-

  simultaneously too much compression and, consequently, a

  deformation of the rib (s) 10, and of the ridges 9.

  The plate 14 and the lining 17 can also be

  provided in the embodiments described above.

  It goes without saying that many modifications can be made to the clamp described and shown, without

depart from the scope of the invention.

-R E V E N D I CAT IONS -

  1. Hose clamp to grip elongated objects

  such as pipes or cables, with a ribbon

  ge (1) in particular metallic, which forms an arch (2) appro-

  approximately circular in the closed state of the collar, and comprises a first tab (3) projecting tangentially beyond the arch (2) and provided with an oblong hole (4), as well as a second tab (5) provided with a hole (6) and projecting from said hoop (2), substantially at right angles, collar in which a screw (7) can be introduced through the holes (4, 6); the first tab (3) is provided on its side facing the second tab (5), next to the oblong hole (4) and over at least part of the length

  of said oblong hole (4), of parallel ridges (9) of configuration

  identical cross-section, extending transversely

  in relation to the longitudinal direction of the oblong hole (4); and the second tab (5) has, on its face facing the first tab (3), at least one rib (10) which extends transversely to the longitudinal direction of the oblong hole (4), at the same angle that the striations (9), and

  has a corresponding cross-sectional configuration

  dant, to a large extent, to the cross-sectional configuration of said ridges (9), collar characterized in that the ridges (9) and the rib (s) (10) are

  formed by bilateral undulations of the legs (3, 5).

  2. Necklace according to claim 1, characterized by the

  the striations (9) are arranged at right angles to the

  port in the longitudinal direction of the oblong hole (4).

  3. Necklace according to claim 1, characterized in that the striations (9) are arranged at an angle relative to

  to the longitudinal direction of the oblong hole (4).

  4. Hose clamp to grip elongated objects

  such as pipes or cables, with a ribbon

  ge (1) in particular metallic, which forms an arch (2) appro-

  approximately circular in the closed state of the collar, and comprises a first tab (3) projecting tangentially beyond the arch (2) and provided with an oblong hole (4), as well as a second tab (5) provided with a hole (6) and projecting from said hoop (2), substantially at right angles, collar in which a screw (7) can be introduced through the holes (4, 6); the first tab (3) is provided on its side facing the second tab (5), next to the oblong hole (4) and over at least part of the length

  of said oblong hole (4), of parallel ridges (9) of configuration

  identical cross-section, extending transversely

  in relation to the longitudinal direction of the oblong hole (4); and the second tab (5) has, on its face facing the first tab (3), at least one rib (10) which extends transversely to the longitudinal direction of the oblong hole (4), at the same angle that the striations (9), and

  has a corresponding cross-sectional configuration

  to a large extent to the cross-sectional configuration of said ridges (9), collar characterized in that the ridges (9) are arranged obliquely relative to

  to the longitudinal direction of the oblong hole (4).

  5. Necklace according to claim 4, characterized by the

  that the ridges (9) and the rib (s) (10) are formed

  led by bilateral undulations of the legs (3, 5).

  6. Necklace according to claim 1 or 5, characterized

  by the fact that the thickness of the tightening tape (1) is

aunt over its entire length.

  7. Necklace according to any one of claims 1 to

  6, characterized in that the ridges (9) are provided with

on either side of the oblong hole (4).

  8. Necklace according to any one of claims 1 to

  7, characterized in that at least one rib (10) is formed on the face of the second tab (5) which is turned towards

  the first leg (3), on either side of a plane perpendicular to

  area at said second leg (5) and coinciding with the direction

longitudinal of the oblong hole (4).

  9. Necklace according to claims 7 and 8, characterized

  by the fact that the ridges (9) located on one side of the plane are offset, in the longitudinal direction of the oblong hole, relative to the ridges (9) located on the other side

of said plan.

  10. Collar according to claim 9, characterized in that the relative offset of the striations (9) located on either side corresponds to half of the spacing between striations,

measured in the direction of the plane.

  11. Necklace according to claim 9 or 10, characterized in that the rib (s) (10) located on one of the sides of the plane is (are) offset (s), relative to the or to the rib (s) located on the other side of said plane, by half the spacing between ridges measured in the direction of said plane.

  12. Necklace according to any one of claims 1

  to 11, characterized in that a plate (14), provided with a third hole (15) aligned with the hole (6) of the second tab (5), is located on the face of said second tab (5 ) which is turned away from the first tab (3), and said plate (14) covers, by lateral wings (16), the lateral edges of

  said second tab (5) and also, in the closed state of said collar

  bind, the lateral edges of said first tab (3).

  13. Necklace according to claim 12, characterized by

  the fact that the arch (2) has a lining (17) made of a material

  riau endowed with the elasticity of rubber, which covers its internal face and surrounds its edges; and the plate (14) consists of two sections (18, 19) substantially perpendicular to each other, one of which (18) is provided with the third hole (15) and lateral wings (16), and the other section (19) is provided with a deformed imprint (20) which engages between the edges of said lining (17), and is applied against said

edges.

  14. Necklace according to any one of claims 1 to 13, characterized in that an underlying layer (11), damping

  vibrations, is fixed on the face of the first leg (3) which is turned away from the second leg

(5).