FR2840224A1 - Binding for attaching boot to e.g. ski comprises two side plates) linked by a heel bar and instep plate which has lower and upper sections attached to front and rear of side plates respectively - Google Patents

Abstract

The binding for attaching a boot to e.g. a ski comprises two side plates (11, 12) linked by a heel bar (13) and an instep plate. This has a lower (32) and an upper (30) section attached to the front and rear of the side plates respectively. These can be simultaneously locked to the plates.

Description

Device for retaining a shoe on a sports shoe The invention is

  relates to a device for retaining a shoe on a sports machine

  for which the retention is done by tightening at least a transverse portion of the shoe.

  Such wind devices used for the practice of snowboarding or snowboarding, skiing on snow or water, snowshoeing, roller skating, or the like. A device according to the prior art generally comprises a lateral flange and a medial flange, oriented substantially in a longitudinal direction of the device. Each flange

  is secured either directly to the vehicle, or to a base itself secured to the vehicle.

  Each flange retains the shoe transversely.

  The device also includes a rear stop located between the flanges to wedge the

  shoe longitudinally, as well as at least one strap which connects the flanges to each other.

  Each strap allows a transverse portion of the shoe to be tightened in a reversible manner

  on the machine or on the base, between the flanges.

  Thus, the shoe can be retained on the machine directly or through

1 5 the base.

  The manipulation of the straps makes putting on and taking off relatively long and tedious. This is why an alternative is to replace the straps with a cover,

  intended to cover the upper of the shoe.

  The cover has a front part and a rear part, the front part being articulated relative to the flanges along a transverse axis. A lateral locking means and a medial locking means allow a removable locking of the rear part of the

hood on the flanges.

  Thus it is possible to lift the hood to put on or take off, and to lower it to

retain the shoe.

  2 5 I1 appeared that in a retainer with cover, according to the prior art, the shoe is not perfectly held. Therefore parasitic movements of the shoe, relative to the device, occur while driving ltengin. It doesn’t

driving precision.

  It also appeared that the introduction or release of the shoe, in or out

  3 0 of the device, is hampered by the cover or by the rear stop.

  One of the aims of the invention is to improve the behavior of the shoe in a device for

retainer with cover.

  Another object of the invention is to facilitate the passage of the shoe to enter a retaining device with hood, or to sort it out. To do this, the invention provides a device for retaining a shoe on a machine. sports, the device comprising a lateral flange and a medial flange oriented substantially in a longitudinal direction of the device, at least one stop located towards the rear of the device between the flanges, a cover intended to cover the upper of the shoe, the cover having a front part and a rear part, the front part of the cover being connected to

  flanges respectively by a lateral connection and by a medial connection.

  The retaining device according to the invention is characterized in that a tightening means allows reversible and simultaneous tightening of the front and rear parts of the cover towards the flanges. By simultaneously tightening the front and rear parts of the hood towards the flanges, the tightening means allows a more homogeneous holding of the shoe in the device. Consequently, the parasitic movements of the shoe in the device are reduced or even nonexistent. The

  driving the craft is therefore more precise.

  The retaining device according to the invention is also characterized by the fact that each link allows rotation along a transverse axis of the device and translation in a

  plane substantially perpendicular to the axis of rotation.

  By allowing rotation and translation, the cover connections to the flanges increase the range of movement of the cover for opening and closing. Therefore, the passage of the shoe is easier. In addition, a user is not embarrassed to apply the heel to

stop.

  Other characteristics and advantages of the invention will be better understood with the help of the description which follows, with regard to the annex therein, if there are non-limiting examples, how the invention can be carried out, and in which: 2 0 - Figure 1 is a perspective view showing the lateral dimension of a retaining device, in the open situation, according to a first embodiment of the invention, - Figure 2 is a perspective view showing the medial dimension of the device of FIG. 1, FIG. 3 is a schematic view of part of the clamping means of the device of FIG. 1, 2 5 - FIG. 4 is a view of face in diving of the device of figure 1, - figure 5 is a section according to VV of figure 2, for a situation of opening of the device, - figure 6 is similar to figure 5, but corresponds to a situation of device closure, Figure 7 is a perspective view of the device in the closed state , with a retaining shoe, - Figure 8 is a partial perspective view of a retaining device according to a second embodiment, - Figure 9 is a front view in diving of a retaining device according to a third 3 5 embodiment, - Figure 10 is an internal view of a mechanism of the clamping means of the device of the

figure 9.

  Although the examples described below relate to devices for retaining a boot on a snowboard, it should be understood that they apply to other

  areas such as those mentioned before.

  The first example is presented using FIGS. 1 to 7 As shown in FIG. 1, a retaining device 1 allows the removable retaining on

  a board 2 of a shoe. This behind is identified by the number 3 in Figure 7.

  In a manner still known according to FIG. 1, the retaining device 1 comprises a base 4 which extends in a longitudinal direction L1 between a rear end S and a

front end 6.

  1 0 The base 4 has an upper face 7 intended to be opposite the sole of the

  shoe 3, and a lower face 8 provided to be above the board.

  The base 4 is retained on the board 2 by a means represented in the form of a disc 9,

  itself retained on board 2 by screws 10.

  Of course, other means for retaining the base 4 could be provided.

  The base 4 serves as a seat for a lateral flange 11 and a medial flange 12, oriented substantially in the longitudinal direction L1. When shoe 3 is in place on the

  device 1, the flanges 11, 12 run along the sole laterally.

  A stop is located towards the rear of the device 1 between the flanges 11, 12, to oppose

  a movement towards the rear of the shoe 3 relative to the device.

  In the exemplary embodiment, the stop is represented in the form of a hoop 13 which connects the flanges 11, 12 to each other. The arch 13 is in a raised position relative to the base 4. However, any other structure could have been provided for the rear stop, such as a rib projecting from the base 4. In this case the stop is not raised by

report to the base.

  Preferably the base 4, the flanges 11, 12 and the arch 13 form a single piece made for example of synthetic material. However it could be foreseen that the flanges or the arc at the s ies of s p ieces so li dari see s at the base by any other means than a co lage, a

  welding, screwing, nesting, or other.

  There is also a cover 20 intended to cover the upper of the shoe 3 between the

flanges 11, 12.

  The cover 20 serves to retain, in a removable manner, the boot 3 on the base 4, between the

flanges 11, 12.

  The cover 20 extends longitudinally between a rear edge 21 and a front edge 22, transversely between a lateral edge 23 and a medial edge 24, and has an external face 25 and an internal face 26. This rear is intended to be opposite of the stem of the

shoe 3.

  Between the rear edge 21 and the front edge 22, the cover 20 successively presents a portion

  rear 30, an intermediate part 31 and a front part 32.

  Preferably the intermediate portion 31 of the cover 20 is structured to have a lower flexural resistance, along a substantially transverse axis, than the

  bending of the rear parts 30 and front 32.

  For this purpose the intermediate part 31 has for example a reduced width with respect to the rear parts 30 and before 32. It can also be provided in addition to other means of reducing the resistance in

  bending, such as holes 33 in the intermediate part 31 of the cover 20.

  An advantage which results from this is a better ability of the hood to conform to the shape of the shoe. The reduction in width of the intermediate part 31 can be symmetrical, or not, by

  relative to a central longitudinal plane of the cover 20.

  The front part 32 of the cover 20 is connected to the flanges l 1, 12 respectively by a connection

  lateral 34, visible in FIG. 1, and by a medial link 35, visible in FIG. 2.

  According to the invention, each link 34, 35 allows rotation along a transverse axis of the

  1 5 device and a translation in a plane substantially perpendicular to the axis of rotation.

  As shown in FIG. 1, the lateral link 34 comprises a lateral link 40 connected to the lateral flange 11 by a low articulation 41, and connected to the front part 32 of the cover.

by a high articulation 42.

  By analogy as shown in FIG. 2, the medial link 35 comprises a medial link 43, connected to the medial flange 12 by a low articulation 44, and connected to the front part.

  32 of the cover 20 by a high articulation 45.

  For the two connections 34, 35, each articulation 41, 42, 44, 45 can comprise

  means such as a rivet, a screw, a pin, or the like.

  In addition each joint 41, 42, 44, 45 may or may not be removable using a tool.

  Each link 40, 43 can rotate respectively along its lower articulation 41, 44 around a transverse axis of the device 1. When the upper articulations 42, 45 are brought closer respectively to the lateral flange 11 and the medial flange 12, as well as the stop 13, the front part 32 of the cover 20 occupies a low and retracted position. The front part 32 of the cover 20 is then brought closer to the base 4 and the stop 13, in a clamping position of

  The shoe or closed position.

  Conversely, when the high joints 42, 45 are moved away respectively from the lateral flange 11 and the medial flange 12, as well as from the stop 13, the front part 32 of the cover 20 occupies a higher and more advanced position. The front part 32 is then moved away from the base 4 and the stop 13, in a shoe release position or position

3 5 opening.

  When passing from the closed position to the open position, or vice versa, the lateral 34 and medial 35 connections allow the front part 32 of the cover 20 to have both a rotational movement along a transverse axis and a movement of translation in a plane substantially perpendicular to the axis of rotation. This plane is substantially a longitudinal plane

of the retainer 1.

  This combination, of a rotational movement and a translational movement, amplifies the stroke of the front part 32 of the cover 20. It follows that the free space between the base 4 and the cover 20 is very large. for the open position.

  An advantage which results therefrom is a greater ease of putting on or taking off.

  I1 is also provided with a tightening means which allows a tightening, reversible and simultaneous,

  from the front 32 and rear 30 parts of the cover 20 towards the flanges 11, 12.

  The clamping means comprises a link 50, preferably flexible, represented only on the

figure 3.

  For example, the link 50 is represented in the form of an association of two portions, which

  wind a first portion 51 and a second portion 52.

  The first portion 51 preferably includes a cable 53, and the second portion

  preferably includes a strap 54.

  1 5 A connecting means is provided for connecting the first 51 and the second 52 portions to each other. This means comprises for example a click clamping mechanism 55 secured, by means represented in the form of a cable clamp 56, to a first free end 57 of the

cable 53.

  By acting on a lever 65 of the mechanism 55, it is possible to shorten the length of the link 50. The shortening results in a displacement of the mechanism 55 and the end

  free 57 of the cable 53, along the strap 54, in a first sees.

  By acting on a button 66 of the mechanism 55 it is possible to lengthen the length of the link, or possibly to separate the first 51 and second 52 portions. The elongation results in a displacement of the mechanism 55 and of the free end 57 of the cable 53, along

  2 5 the strap 54, in a second direction opposite to the first.

  Of course, other means could be provided to connect the first

51 and second 52 servings.

  In addition to the link 50, the means for tightening the cover 20 includes guide means and means for attaching the link, relative to the cover 20 and to the other parts of the

3 0 device 1.

  Using FIGS. 1 and 2, it is possible to follow the path of the link 50.

  The strap 54 of the second portion 52 is hooked to the lateral flange 11, by a means represented in the form of an articulation 67. Of course, this rear can be produced

  by any means including a screw, a rivet, or any equivalent.

  3 5 Then the strap 54 is guided relative to the rear part 30 of the cover 20, by a passer-by

rear side 68.

  Next, the cable 53 passes through a rear medial guide 69 fixed by any means to the rear part.

  of the cover 20. The rear medial guide 69 can be opened or closed.

  The clamping mechanism 55 is located between the loop 68 and the guide 69, on the side of the face

outer 25 of cover 20.

  The cable 53 is then guided by a rear medial reference 70 then by a front medial reference 71, both integral with the medial flange 12. Of course, it could have been provided for one or both of the references to be directly integral with the base 4. Then the cable 53 passes from the side of the external face 25 of the cover 20, at the level of the front part 32, passing through a medial front guide 72 then a lateral front guide 73. The guides 72,

  73 are, again, fixed by any means to the front part 32 of the cover 20.

  Then the cable 53 is guided by a front lateral return 74, secured to the lateral flange 11.

  A second free end 75 of the cable 53 has a hooking means, produced for example in the form of a sleeve 76. The latter is retained in a retaining box 77 secured to the lateral flange 11. Any other retaining means could have been foreseen, as someone

cable clamp or other.

  Of course, again, the front lateral reference 74 and the retaining box 77 could have

  1 5 be directly attached to the base 4.

  The path of the link 50 on the retaining device 1 is shown in perspective at the

figure 4.

  We can summarize the path of the link as follows. The link is anchored on a starting flange which is either lateral or medial. Towards the front end of the starting flange, the link is guided transversely along the front part of the hood, then longitudinally along the other lateral or medial flange, and finally transversely on the rear part of the hood.

  cover, up to the rear end of the starting flange.

  It appears that the cable 53 and the clamping mechanism 55 can even slide on the cover 20, at the rear 30 and front portions 32. The cable 53 can be mounted such that, or

  2 5 well being surrounded by a sheath over all or part of its length.

  In FIGS. 1, 2, it can be seen that at each link 40, 43, towards the front of the retaining device 1, the front lateral 74 and medial 71 wind references are arranged in a specific manner. The joints 41, 42, 44, 45 of the lateral and medial links and the references

  front lateral 74 and medial 71 wind distributed, from their respective dimensions, at the vertices of a triangle.

  When the link 50 is released, it is possible to lift the cover 20 and advance it, both on the side of the front part 32 and on the side of the rear part 30. The cover 20 then occupies the open position, as shown in FIGS. 1, 2 and 4. The high joints 42,

  wind links away from the base 4.

  In this case as shown in FIG. 5, the clamping mechanism 55 and the first 3 5 free end 57 are moved away from the articulation 67 of the strap 54 on the lateral flange 11. The

  developed length of the link 50 is then important.

  Conversely when the link 50 is stretched using the tightening mechanism 55, as shown in FIG. 6, the mechanism 55 and the first free end 57 are close to the joint 67 of the strap 54 on the lateral flange 11. The developed length of the SO link is

then reduced.

  The cover 20 is lowered towards the base 4 and moves back towards the stop 13, in the position of

  closing. The high joints 42, 45 of the link rods are close to the base 4.

  The closed position is visible in Figure 7, in a case where the shoe 3 is

retained on the device 1.

  To retain the shoe 3, it suffices to tighten a single link 50, which can be done with one hand. The flexibility of the cover 20, in particular at the level of the intermediate part 31, allows a good distribution of the clamping pressures on the shoe. The bond comes to tighten

  simultaneously ['front and rear of the hood 20 on the shoe.

  The invention therefore offers, among other things, the advantage of easy handling, as well as the advantage

good shoe holding.

  Of course, the device 1 is particularly suitable for retaining a flexible shoe, that is to say in particular whose upper allows inclinations of the leg relative to the

1 5 foot.

  The other exemplary embodiments of the invention will be described later with the aid of FIGS. 8 to 10. For reasons of convenience, this mainly concerns the specifics of the examples which

wind highlighted.

  For the second example according to FIG. 8, there is a retaining device 90 with a base 91, a lateral flange 92, a medial flange 93, and a cover 94. A means of

  tightening the cover 94 includes a link 95.

  What differentiates the second example from the first is the structure of the lateral and medial connections 101 which connect the front part 102 of the cover 94 respectively to the flanges

  lateral 92 and medial 93. In this case the lateral connection 100 comprises a lateral paste 103.

  2 5 A lower end 104 of the paste 103 is fixedly fixed to the lateral flange 92 by a means represented in the form of a pad of bolts l OS. A high end 106 of the paste 103 is fixedly fixed to the front part 102 of the cover 94 by a means represented in the form of a bolt 107. By analogy the medial connection 101 comprises a

paste mediale 110.

  A lower end 111 of the medial paste 110 is fixedly fixed to the medial flange 93 by a means represented in the form of a pad of bolts 112. An upper end 113 of the paste 110 is fixedly fixed to the front part 102 of cover 94 by

  a means represented in the form of a bolt 1 14.

  Unlike the first example, the lateral 103 and medial 110 steps are not articulated relative to the flanges 92, 93. The steps 103, 110 each are both flexible and substantially inextensible. Wiles can be made from sheets of plastic, metal, or even made with a woven fiber strap. The lateral pastes

  103 and mediale 1 10 can even flex and twist.

  Consequently, they can accompany the movement of the cover 94 towards the open position or towards the closed position. When the link 95 is energized, and the cover 94 is biased towards the base 91 and the flanges 92, 93 in its closed position, the

  pastes 103, 110 flex because they are subjected to a buckling force.

  Conversely when the link 95 is released, and the cover 94 is removed from the base and the flanges 92, 93 in its open position, the steps 103, 110 extend and twist from

  so that the cover 94 is lifted and rotates forward.

  It can be provided that the steps are conformed so as to behave each like a spring. In this case they are made of plastic or metal. Wiles elastically urge the hood in an opening movement. Therefore the hood opens

  automatically when the link is released.

  This wind essentially the mechanical deformations of the steps 103, 110 which allow the cover 94 to have a rotational movement along a transverse axis of the device 90 and a

  translational movement in a plane substantially perpendicular to the axis of rotation.

  For the third example according to FIG. 9, there is a retaining device 130 with a base 131, a lateral flange 132, a medial flange 133, and a cover 134. A means of

  tightening the cover 134 includes a link 135.

  What differentiates the third example from the first, in particular, this wind the path of

link 135 and its tightening means.

  The link 135 has a tightening loop 140 which forms a pull handle for tightening. The loop 140 is obtained by joining a lateral strand 141 and a medial strand 142,

  which each pass through a reversible tightening mechanism 143. The latter will be described later.

  The lateral strand 141 follows a rear portion 144 of the cover 134 to dive towards the flange

  lateral 132, go along the flange 132, and go up on a front part 145 of the hood.

  By analogy the medial strand 142 follows the rear part 144 of the cover 134 to dive towards the

  medial flange 133, go along the flange 133, and go up on the front part 145 of the hood.

  The lateral 141 and medial 142 strands extend each other above the front part 145. Preferably the route of the link 135 above the front part 145, via the strands

  lateral 141 and medial 142, forms a round trip between two lateral 146 and medial 147 references.

  The arrangement of the strands 141, 142 and the references 146, 147 forms a multiplier mechanism, similar to that of a hoist. As a result, the tension exerted on the link 135 for

  tightening the cover 134 is amplified at the front part 145.

  The clamping mechanism 143 is shown diagrammatically in section in FIG. 10. It has a body 155 through which the wind leads a lateral passage 156 for the lateral strand 141, and a medial passage 157 for the medial strand 142. The body 155 is secured to the hood

134 by any means.

  Lateral movable latches 158 and medial 159 wind elastically biased against the strands 141, 142, by elastic means represented in the form of springs 160, 161. The latches 158, 159 wind articulated along respective axes 162, 163. However, it could be

provided with translational guidance.

  The components of the 143 tightening mechanism are compliant and agencies for

  that a pull on the loop 140, in a direction away from the body 155, tightens the link 135.

  After traction, the part of the link 135 above the cover 134 remains under tension because the tabs 158, 159 block the strands 141, 142, thus preventing the loop 140 from approaching

the body 155.

  The loosening of the mechanism 143 is obtained by pulling on a loosening loop 170 of a handle 171. The latter has a lateral strand 172 secured by any means to the lateral cleat 158, and a medial strand 173 secured by any means to the medial cleat 159. A tensile stress on the lateral 172 and medial 173 strands stresses the tabs 158, 159 in a direction opposite to that linked to the stress by the springs 160, 161. Therefore the tabs 158, 159 are away from the strands 141,142 of the link 135, which can thus be

  to release. After release, the cover 134 can be lifted to an open position.

  1 5 The retaining device 1 according to the third example can be opened or closed with one hand. Each manipulation involves a pulling movement of the hand, which is a

  natural movement, easy to exercise, and which makes it easier to tighten the clamping force.

  For each example the invention is made from materials and according to techniques

  of implementation known to those skilled in the art.

  Of course, the invention is not limited to the embodiments described above, and

  includes all technical equivalents which may fall within the scope of the claims which

will follow.

  In particular guides, passers-by, references, and tightening mechanisms could

  be structured and / or agencies differently.

  On the other hand, the terms lateral and medial, used to qualify certain parts of the

  devices, could be reversed without changing the spirit of the invention.

Claims (10)

  1- Device for retaining (1, 90, 130) a shoe (3) on a sports machine (2), the device (1, 90, 130) comprising a lateral flange (11, 92, 132) and a medial flange (12, 93, 133) oriented substantially in a longitudinal direction (L1) of the device (1, 90, 130), at least one stop (13) located towards the rear of the device (1, 90, 130) between the flanges (11, 12, 92, 93, 132, 133), a cover (20, 94, 134) intended to cover the upper of the shoe (3), the cover (20, 94, 134) having a front part ( 32, 102, 145) and a rear part (30, 144), the front part (32, 102, 145) of the cover (20, 94, 134) being connected to the flanges (11, 12, 92, 93, 132, 133) respectively by a lateral connection (34, 100) and by a medial connection (35, 101), characterized in that a tightening means allows reversible and simultaneous tightening of the front parts (32, 102, 145) and rear (30, 144) of the cover (20, 94, 134) towards the flanges (11, 12, 92, 93, 132, 133).   2- retainer (1, 90, 130) according to claim 1, characterized in that.   each link (34, 35, 100, 101) allows rotation along a transverse axis of the device   (1, 90, 130) and a translation in a plane substantially perpendicular to the axis of rotation.   3- retainer (1, 130) according to claim 1 or 2, characterized in that the lateral connection (34) comprises a lateral link (40), connected to the lateral flange (11, 132) by a low articulation ( 41), and connected to the front part (32, 145) of the cover (20, 134) by a high articulation (42), and by the fact that the medial connection (35) comprises a medial link (43), connected to the medial flange (12, 133) by a low articulation (44), and connected to the   front part (32, 145) of the cover (20, 134) by a high articulation (45).   4- retainer (90) according to claim 1 or 2, characterized in that the lateral connection (100) comprises a lateral paste (103), one lower end (104) of which is fixedly fixed to the lateral flange ( 92), and a high end (106) of which is fixedly fixed to the front part (102) of the cover (94), and by the fact that the medial connection (101) comprises a medial paste (110), one of which lower end (111) is fixedly fixed to the medial flange (93), and a high end (113) is subject to   fixed manner to the front part (102) of the cover (94).   3 0 5- Retaining device (1, 90) according to claims 1 to 4, characterized in that the   clamping means comprises a link (50), the link (50) being anchored on a starting flange (11, 12, 92, 93) which is either lateral or medial, the link (50) being guided, towards the end before the starting flange, transversely along the front part (32, 102) of the cover (20, 94), then longitudinally along the other lateral or medial flange, and finally transversely   3 5 on the rear part (30) of the cover (20, 94), up to the rear end of the starting flange.   6- Retaining device (1, 90) according to one of claims 1 to 5, characterized in that   that the clamping means comprises a link (50), the link (50) comprising a first portion (51) and a second portion (52), a connecting means being provided for connecting the first   (51) and the second (52) portion to each other.   7- retainer (1, 90) according to claim 6, characterized in that the first portion (51) comprises a cable (53), that the second portion (52) comprises a strap (54), and that the connecting means includes a click clamping mechanism (55) attached to cable (53).   8- retainer (1, 90) according to claim 7, characterized in that the cable (53) passes through a medial rear guide (69) fixed to the rear part (30) of the cover (20, 94), by the fact that the cable (53) is guided by a rear medial return (70) then by a front medial return (71) integral with the medial flange (12, 93), by the fact that the cable (53) passes through a front guide medial (72) then a lateral front guide (73) fixed to the front part (32, 102) of the cover (20, 94), by the fact that the cable (53) is guided by an integral front lateral deflection (74) of the lateral flange (11, 92), by the fact that a free end (75) of the cable (53) has a fastening means retained on the lateral flange (11, 92), and by the fact that the strap (54 ) is hooked to   lateral flange (11, 92) by a joint (67).   9- Retaining device (1) according to claim 8, characterized in that the joints (41, 42, 44, 45) of the lateral (40) and medial (43) links and the forward references   lateral (74) and medial (71) distributed, from their respective dimensions, at the vertices of a triangle.   - Retaining device (130) according to one of claims 1 to 4, characterized in that   that the tightening means comprises a link (135), the link (135) having a tightening loop (140) obtained by joining a lateral strand (141) and a medial strand (142) which each pass through a mechanism reversible clamping device (143), the lateral strand (141) along a rear part (144) of the cover (134) to dive towards the lateral flange (132), go along the flange (132), and go up on a front part (145 ) of the cover (134), the medial strand (142) along the rear part (144) of the cover (134) to dive towards the medial flange (133), go along the flange (133), and go back to the front part (145 ) of the cover (134), the lateral (141) and medial strands   2 5 (142) extending each other above the front part (145).   11- retainer (130) according to claim 10, characterized in that the clamping means further comprises a mechanism (143) with a body (155), through which wind leads a lateral passage (156) for the strand lateral (141) and a medial passage (157) for the medial strand (142), movable lateral (158) and medial (159) cleats being elastically urged against the strands (141, 142) by elastic means, a buckle loop loosening (170) making it possible to urge the tabs (158, 159) in a direction opposite to that linked to the   stress by elastic means.   12- Restraint device (1, 90, 130) according to one of claims 1 to 11, characterized by   the fact that the cover (20, 94, 134) has an intermediate part (31) structured to present a lower flexural strength, along a substantially transverse axis, than the