FR2839106A1 - Quick-fit cover for end of roller shutter housing has anti-lift system with flexible lugs - Google Patents

Abstract

The shutter housing end cover, comprising a base (4) with two side walls (5, 6) connected to lengthwise extrusions (9, 10) and a heel (26), has an anti-lift system (17) for the heel and cover assembly. The anti-lift system has two flexible lugs (18, 19) connected to the heel and made with return ends (20, 21) engaging with the lengthwise extrusions. The cover also has an anti-tilt member (24) and a component to prevent separation of the end cover from the housing.

Description

associated with the second element (2).

  The present invention relates to closing devices for lateral ends of a rolling trunk, said trunk comprising a bottom from which hang two longitudinal walls, the respective longitudinal free ends of which wind provided with a longitudinal profile, said bottom and said longitudinal walls defining two recesses at the lateral ends of the trunk, said closure device comprising a cheek intended to engage with said trunk in order to close a lateral end of the latter and a heel secured to said cheek intended to be associated with said longitudinal profiles in order to participate in the fixing of the assembly

  heel and plays at the side end of the boot.

  The prior art teaches us such closing devices. We know in particular with the document FR 93 07117 in the name of the applicant, a closure device comprising a separate cheek and heel, the cheek being first inserted vertically in a plane transverse to the trunk in the recess of a lateral end of the chest, so that teeth engaging the chest, placed in the extension of the cheek in the transverse plane, can penetrate into the material of the chest, for example expanded polystyrene, then the heel being inserted in a second step longitudinally, generally in the profiles equipping the respective free ends of the two longitudinal walls of the trunk, the heel thus locking the cheek in its location at the end of the trunk, and preventing it from being raised in the

opposite direction of its installation.

  Such a closure device works perfectly, however it requires two separate operations to set up the heel and cheek assembly at one lateral end of the boot, one for the cheek and another for the heel, which increases assembly times. these elements, and also offers two separate elements, namely the heel and the cheek for closing a lateral end, which can complicate supplies. There is also known a closure device for the lateral ends of a rolling trunk, incorporating characteristics similar to that of the previously described device, but offering a heel and a single piece cheek. Thus the heel and cheek piece assembly is fixed to the lateral end of a trunk in a single operation of inserting the assembly vertically in a plane transverse to the trunk, by means of appropriate locks penetrating in force by friction in suitable additional housings in the longitudinal profiles of the boot. Such a device requires specific profiles, and therefore is not very flexible to use. In addition, the one-piece cheek and heel limit the scope of the device and require a version

  right and a left version of it for dissyrnetric safes.

  The present invention aims to overcome these drawbacks and provide other advantages. More precisely, it consists of a fitting device for the lateral ends of a rolling flight case, said case comprising a bottom from which extend two longitudinal walls, the respective longitudinal free ends of which are provided with a longitudinal profile, said bottom and said longitudinal walls defining two recesses at the lateral ends of the trunk and an interior space in which is intended to be housed the roller shutters, said closing device comprising a cheek intended to engage with said trunk in order to close a lateral end of the latter and a heel integral with said cheek intended to be associated with said longitudinal profiles in order to participate in the fixing of the heel and cheek assembly at the lateral end of the boot, said closure device being characterized in that it comprises means for anti-lifting the heel and cheek assembly when it is fixed to the lateral end of said trunk, co carrying at least two flexible elastic pastes connected to said heel and carrying two returns respectively, intended to engage on parts of the two profiles of the trunk respectively, which wind opposite the interior space of the trunk defined by the bottom and the two longitudinal walls, through their flexibilities

  and their respective elasticities, in order to prevent lifting of the heel and cheek assembly.

  The closure device according to the invention allows, by the definition of the anti-lifting means, to propose an integral heel and cheek assembly which can be put in place by a single operation of insertion of the cheek and the heel integral in a lateral recess from the trunk. In the present invention, the anti-lifting means as defined participating, jointly with the fact that the cheek and the heel are integral with one another, in the function obtained by the longitudinal insertion of the heel in the profiles of the chest with the mounting of the prior art base on a heel and a cheek mounted separately. The present invention allows mounting in all boxes of the type described regardless of the profile in particular due to the use of flexible elastic strips linked to said heel and intended to engage on parts of the two profiles of the box respectively, in

  with respect to the interior space of the trunk defined by the bottom and the two longitudinal walls.

  By means of anti-lifting of the heel and cheek assembly when it is fixed to the lateral end of said trunk, is meant any means making it possible to prevent the extraction of the heel and cheek assembly once mounted in the trunk, in the opposite direction to that corresponding to the insertion of said assembly in the lateral recess of the trunk, that is to say

in a plane transverse to the trunk.

  According to an advantageous characteristic, the device according to the invention further comprises means of anti-tilting of the cheek and heel assembly when the latter is fixed.

  at the side end of said trunk.

  By means of anti-tilting of the cheek and heel assembly when it is fixed to the lateral end of said trunk, is meant any means making it possible to avoid tilting

  of the cheek and heel assembly around the part of the cheek which engages the trunk.

  According to another advantageous characteristic, the device according to the invention further comprises means of anti-separation of the longitudinal walls from said trunk,

  when said heel and cheek assembly is fixed to the lateral end of the trunk.

  By means of anti-separation of the longitudinal walls to said trunk, is meant any means making it possible to avoid the separation of the free ends of the longitudinal walls to said trunk under the effect of opposite transverse pulls which would be exerted at

  each of these free ends respectively.

  The combination of the anti-lift means with the anti-tip means oS and / or the anti-separation means also allows the closure device according to

  ['invention to benefit from a great rigidity and security of [' assembly obtained.

  According to an advantageous characteristic, said heel and said cheek are linked by means of a connection allowing at least one degree of freedom in translation of the cheek relative to

in the heel.

  This characteristic makes it possible to adapt the device according to the invention to a box which would be asymmetrical, as is the case if the thickness of the longitudinal walls is different for the same box. The connection of the heel and the cheek with a degree of freedom in translation makes it possible to equip the two lateral recesses with the same chest with two

  identical devices according to the invention and the above characteristic.

  According to another advantageous characteristic, said heel and said cheek are linked by

  a connection also allowing angular mobility of the cheek relative to the heel.

  This characteristic makes it possible to overcome a possible defect in squaring between the profiles of the longitudinal walls of the trunk and the transverse plane defined by the lateral recess of the trunk. In the case of a bad squareness, the angular mobility of the cheek by

  heel ratio allows the whole to adapt to the defect of squaring.

  According to another advantageous characteristic, said anti-tip means of the cheek and heel assembly when the latter is fixed at the lateral end to said trunk comprise two transverse projections arranged on said cheek, in an area close to the junction with the heel , projections intended to penetrate into the trunk in order to perform the anti-tilt function, the latter comprising a soft material in the area of

  penetration of the transverse projections.

  According to another advantageous characteristic, said means for preventing the longitudinal walls from reaching said trunk, when said heel and cheek assembly is fixed at the lateral end to said trunk, comprise two longitudinal ribs arranged on said cheek, intended to fit into said profiles respectively in order to carry out the

  anti-separation function of the longitudinal walls to said trunk.

  According to another advantageous characteristic, said means for preventing the longitudinal walls from reaching said trunk, when said heel and cheek assembly is fixed at the lateral end to said trunk, comprise two screws intended to be inserted in the

  two longitudinal walls of the trunk respectively, via said heel.

  According to another advantageous characteristic, said cheek intended to engage with said trunk in order to close a lateral end of the latter comprises means of anchoring teeth allowing said engagement with the trunk, the latter

  comprising a soft material in the engagement zone.

  The invention will be better understood and other characteristics and advantages will appear on reading the following of an example of embodiment of a closure device according to the invention, accompanied by the accompanying drawings, example given by way of

nonlimiting illustration.

  Figure 1 shows a longitudinal sectional view, along line II of Figure 2, of an exemplary embodiment of a closure device according to

  ['invention, mounted at a lateral end of rolling trunk.

  FIG. 2 represents an end view of the example of FIG. 1, interior dimension of the rolling trunk, in the direction F. FIG. 3 represents a perspective view of the single cheek according to the example of

  Figure 1, exterior side of the trunk.

  Figure 4 shows a perspective view of the cheek alone according to the example of

  Figure l, interior side of the trunk.

  Figure S represents a perspective view of the heel alone according to the example of the

Figure 1, outside dimension of the trunk.

  FIG. 6 represents a perspective view of the heel alone according to the example of the

Figure 1, interior side of the trunk.

  The closing device shown in FIGS. 1 to 6 is intended for each of the lateral ends 2 of a trunk 3 of rolling wings, the trunk 3 comprising a bottom 4 from which extend two longitudinal walls 5, 6 of which the free ends 7, 8 respective longitudinal wind provided with a longitudinal profile 9, 10, the bottom 4 and the longitudinal walls 5, 6 defining two recesses (a single recess 11 shown in the figures) at the lateral ends (a single lateral end 2 represented in the figures) of the trunk and an interior space 13 in which is intended to be housed the roller shutters (not shown), the closing device comprising a cheek 14 intended to be engaged with the trunk 3 in order to close a lateral end 2 of the latter and a heel 16 secured to the cheek 14 intended to be associated with the longitudinal profiles 9, 10 in order to participate in the fixing of the heel and cheek assembly at the lateral end 2 of the boot 3. This closure device further comprises means for anti-lifting 17 of the heel and cheek assembly when it is fixed to the lateral end 2 of the boot 3, comprising at least two pastes 18, 19 elastic hoses linked to the heel 16 and carry two returns, 21 respectively, intended to engage on parts 22, 23 of the two longitudinal profiles 9, 10 of the trunk 3 respectively, which wind opposite the space 13 inside the trunk defined by the bottom 4 and the two longitudinal walls 5, 6, by means of their respective flexibilities and elasticities, in order to prevent lifting of the heel and cheek assembly. The core 3 represents a soft material constituting the bottom 4 and the longitudinal walls 5, 6, generally expanded polystyrene, and the two longitudinal profiles 9 and 10 are combined at the ends of their respective longitudinal walls by gluing or crimping, so that the bottom assembly 4, longitudinal walls s 5, 6 and profiles 9, 10 constitute a rigid assembly. Profiles 9, 10, generally made of metallic material of aluminum type or the like, are usually presented in the general shape of U. the longitudinal walls 5, 6 of the trunk 3 being inserted respectively in the interior parts of U. Profiles 9, 10 having outer wings 31, 32 and inner wings 33, 34 respectively. The inner wings 33, 34, or any other internal asperities of the profiles, shoulders or ribs (not shown) facing the interior space 13 of the trunk 3, apt to engage with a return 20, 21 of the steps flexible 18, 19 respectively in order to oppose the lifting of the heel and cheek assembly, can be used by the anti-lifting means 17 of the heel and cheek assembly described above; in the example shown in FIG. 2, the parts 22, 23 of the two longitudinal profiles 9, 10 of the trunk 3 respectively, which are used by the wind-raising means

  lower faces 2, 23 of the inner wings 33, 34.

  The cheek 14 intended to engage with the trunk 3 in order to close a lateral end 2 of the latter, comprises anchoring teeth 15 placed substantially at the end of the cheek which faces the bottom 4 of the trunk 3 , as shown in Figure 1 or 2, the soft material constituting the bottom 4 and the walls 5, 6 of the trunk allowing penetration of the teeth in order to achieve the engagement of the cheek on the trunk. The anchoring teeth 15 are placed in the transverse plane and penetrate into the trunk by a vertical movement of the cheek in the transverse plane, from the free end of the longitudinal walls 5, 6 of the trunk towards the bottom 4 thereof. . The cheek 14 comprises a transverse flange 35 on its periphery facing the longitudinal walls and at the bottom of the trunk, in order to ensure the positioning of the cheek 14 at the end 2 of the trunk, by pressing the flange 35 on the edge 12 of the 'end of the trunk 3, as shown in Figure 1. The cheek 14 further comprises a shoulder 36 at right angles to the flange 35, which allows it to bear on the inner face of the side walls 5, 6 of the trunk and from the bottom 4 thereof, as shown in FIG. 1. The cheek 14 comprises a transverse veil 37 whose surface corresponds substantially to the interior cross section of the trunk 3, and carry different grips 38 intended for the rolling flies itself ( not shown) or to a casing (not shown) for intermediate fixing of the axis of the traveling wheels. The cheek 14 advantageously comprises a plurality of reinforcing ribs 39 intended to stiffen its structure, as shown on

Figure 1 or 3.

  The heel 16 adopts a substantially rectangular shape with a width less than or equal to the width of the trunk taken between the profiles 9, 10, as shown in FIG. 2, and of an appropriate length as required, for example the 'order of a third of the width as shown in Figure 1. The heel 16 may advantageously be ribbed as shown in Figure 5 or 6, to increase its rigidity. The heel 16 carries the anti-lifting means 17 of the heel assembly 16 and plays 14 when it is fixed to the lateral end 2 of the boot 3, as described above, as more particularly shown in the figures. 2 and 6. The two pastes 18 and 19 are respectively double in the example shown, in order to reinforce the anti-lifting means, the two pastes 18 and the two pastes 19 being aligned two by two longitudinally respectively, two pastes 18 and 19 being advantageously aligned two by two transversely, as shown in FIG. 6. The heel 16 has two bearing surfaces, 41 longitudinal positioned at its transverse ends, intended to bear on the outer end surface 42, 43 profiles 9, 10 respectively, as shown in FIG. 2, at the end of the insertion movement of the cheek assembly 14 and heel 16 at the lateral end of the trunk 3. The four legs 18, 19 elastic hoses are linked two has ux respectively to the surfaces 40, 41 of the heel 16, and each adopt a general U-shape of which a branch 44, 45 is rigidly connected to the heel 16, the other branch of the U. called return 20 or 21 being free and intended to come resting on the surface 22 or 23 of the profiles 9 and 10 respectively, when the heel 16 and the cheek 14 wind in place at a lateral end 2 of the trunk 3, as shown in FIG. 2. The distance separating the branches 44 and 45 of two pastes 18, 19 transversely aligned, is less than the distance separating the interior ends of the wings 33 and 34 of the profiles 9 and 10, while the distance separating the return branches 20 and 21 of the same pastes 18, 19 transversely aligned greater than this same distance separating the inner ends of the wings 33 and 34 from the profiles 9 and 10, so that when the heel and the integral cheek are inserted at the end 12 of the trunk in a transverse plane, the returns 20 and 21 of the pastes s 'erase under the pressure exerted on the heel, due to their respective flexibilities, and that these returns 20 and 21 are placed under the wings 33 and 34, facing the lower surfaces 22, 23 of these wings, after the extremity of the return branches 20 and 21 of the pastes has crossed the inner wings of the profiles, under the effect of their respective elasticities. Thus, the returns 20 and 21 of the steps lock the heel 16 on the profiles 9 and 10 and prevent a lifting of this

last as explained above.

  The heel 16 and the cheek 14 are connected by means of a connection allowing at least one degree of freedom in translation of the cheek 16 relative to the heel 14. As shown on

  Figure 1, the heel 16 bears on the cheek over all or part of the width of the heel.

  The veil 37 of the cheek extends at least in part, for example via two transverse tongues 47 and 48 which are inserted in a transverse groove 46 of the heel 16, as shown in FIGS. 2 and 3. The tongues 47 and 48 slide in the groove 46, advantageously allowing a transverse translational movement of the cheek relative to the heel. In order to achieve a connection of the cheek 14 relative to the heel 16 to a single degree of freedom in translation, that allowed by the groove 46, the device advantageously comprises at least one elastic hook 26, preferably two, which are intended to be associated with at least one grip 49 placed on the cheek 14, thus making it possible to hold the cheek and the heel together in cooperation with the tongues 47, 48 in the groove 46, while allowing the displacement in transverse translation of one relative to the 'other. To this end, as shown in FIG. 1 or 2, the two elastic hooks 26 can be rigidly connected to the heel 16, the grip 49 being constituted by a transverse rib on which the hook (s) 26 come to engage, as represented in FIG. 1, when the cheek is inserted into the heel via the groove 46 of the latter. The hook flexes thanks to its elasticity when crossing the rib 49 and returns to its rest position after crossing, locking the cheek and the heel while allowing a degree of freedom in translation from one to the other . During the transverse displacement of the cheek relative to the heel, the two elements being inserted one inside the other, the hook or hooks 26 slide on the rib 49. It should be noted that each hook 26 may have a corresponding rib 49 , as shown in Figure 1. Advantageously, the heel 16 and the cheek 14 wind linked by a connection further allowing angular mobility in a longitudinal plane of the cheek relative to the heel; thus, as shown, the heel 16 forms with the cheek 14 a right angle corresponding to the right angle formed between the profiles 9, 10 and the lateral end 2 of the trunk 3, and more particularly the transverse flange 35 of the cheek 14 with the longitudinal bearing surfaces 40, 41 of the heel 16; suitable angular mobility between the cheek and the heel can be, for example, of the order of 1 or more degrees on either side of the right angle; to obtain such a configuration, it suffices to leave a suitable clearance for the connection between

  the tongues 47, 48, and the groove 46, as well as in the hook-rib connection 26 and 49.

  In order to improve the stability of the heel-cheek link, the end of one or more ribs 39 of the cheek 14 can rest on the heel 16, taking account however of

  do not interfere with the angular mobility of the heel relative to the cheek if necessary.

  The closure device shown in FIGS. 1 to 6 further comprises anti-tilt means 24 of the cheek 14 and heel 16 assembly when the latter is fixed to the lateral end 2 of the boot 3. These anti-tilt means tilting 24 comprises two transverse projections 27, 28 arranged on the cheek 14, in an area close to the junction with the heel 16, these projections 27, 28 being intended to penetrate into the boot 3 in order to perform the function of anti tilting, the latter comprising a soft material in the penetration area of the transverse projections, as explained above with respect to the anchoring teeth 15, for example expanded polystyrene. The projections 27, 28 are therefore advantageously thin in the transverse plane in order to provide moderate resistance when they penetrate the trunk during the positioning of the cheek. The protrusions 27, 28 may further comprise inclined attack edges 50, 51, respectively, in order to reduce the force of penetration of the protrusions in the trunk 3, and their displacement in the material constituting the trunk, as shown on the Figures 2, 3, or 4. The closure device shown in FIGS. 1 to 6 further comprises anti-separation means 25 of the longitudinal walls 5, 6 of the boot 3, when the heel 16 and cheek assembly 14 is fixed to the lateral end 2 of the latter. this. These anti-spacing means 25 comprise two longitudinal ribs 29, 30 arranged on the heel 16, intended to stembo ^ ter in the profiles 9, 10 respectively in order to achieve the function of anti-separation of the longitudinal walls of the trunk. As shown in FIGS. 2 or 6, the longitudinal ribs 29, 30 respectively emerge from the bearing surfaces 40, 41 of the heel 16, outside the anti-lift means 17 so as to be quick to penetrate into longitudinal grooves 52, 53 produced in the profiles 9, 10, respectively, as shown in FIG. 2. When the heel 16 is put in place with the cheek 14, the ribs 29 and 30 penetrate into the grooves 52 at the end of the positioning. , 53 of the profiles 9, 10, respectively, and thus make an obstacle connection between the two free ends 7, 8 of the longitudinal walls 5, 6 of the trunk 3, via the heel and its ribs 29, 30, so as to prevent all transverse displacement based on the elasticity of the longitudinal walls 5, 6 and of the trunk in general, in particular any transverse spacing of the free ends 7, 8 of the walls with respect to one another. Each rib 29, 30 can adopt any cross section, for example, parallelepipedal or trapezoidal, the greatest width of which is less than or equal to the width of the groove of the profile into which it must penetrate. There may indeed be a slight transverse play between the rib and the groove in which it penetrates, so as to facilitate the installation of the whole cheek and heel without reducing the effectiveness of the anti-spacing means intended to prevent an ecarternent of the walls which would allow a lifting of the whole cheek and heel. The anti-spreading means more particularly intended to stiffen the trunk provided with closing devices according to

['invention, during transport.

  Alternatively, the means of anti-separation of the longitudinal walls 5, 6 of the trunk 3, when the heel 16 and cheek assembly 14 is fixed to the lateral end 2 of the latter may comprise two screws (not shown) intended to be inserted into the two longitudinal walls of the respective trunk, via the heel. Such screws replace

  ['association ribs 29, 30 and grooves 52, 53 corresponding.

  The closure device shown in FIGS. 1 to 6 operates in the following manner: the heel 16 is assembled to the cheek 14, the tongues 47 of the cheek being inserted in the groove 46 of the heel until the hooks 26 come lock on the ribs 49 as described above, to form a cheek and heel unit integral with a degree of freedom in transverse translation of one of the elements of the assembly relative to the other, and with a slight angular mobility of one of the elements with respect to the other in a longitudinal plane. Thus, the closure device described is able to adapt to the two ends of a trunk whose longitudinal walls and / or the longitudinal profiles are not the same thickness, by simple sliding of the heel on the cheek or vice versa, and also suitable to adapt to chests comprising a defect of squaring between a lateral extremity and the profiles, by simple angular adaptation between the cheek and the heel. Once assembled, a heel and cheek assembly is present at one end of the trunk, the cheek veil being placed in a plane transverse to the trunk and so that the anchoring teeth 15 are turned towards the bottom of the trunk, the flange 35 of the cheek being partially supported on the edge 12 of the end 2 of the trunk, the two edges 50, 51 of the anti-tilting means being supported on the free end of the longitudinal walls 5, 6; in this position, pressure is exerted by the operator in the transverse plane on the heel 16 so as to move the heel and cheek assembly in order to close the end 2 of the boot 3, the flange 35 sliding in support on edge 12 of the end of the trunk; the anti-tilt means 27 then penetrate into the walls 5, 6 of the trunk 3 and move into the material of which these walls are made until the cheek is in place completely, that is to say that the teeth of anchors have penetrated into the bottom of the trunk; at the end of setting up the heel and cheek assembly, the anti-lift means come into action, and the return steps 20, 21 lock the heel assembly and play in the closed position of the end of the boot; the anti-separation means 25 come into action before or after the anti-lifting means, depending on whether you want the walls of the trunk to be able to be moved aside by the anti-lifting means or not. The anti-spreading means 25 come into action before or after the anti-lifting means depending on whether the ribs 29, 30 penetrate into the grooves 52, 1053, before or after the return of pastes 20, 21 come into contact with profiles 5,6 respectively. The end of the establishment of the heel and cheek assembly can advantageously be signaled to the operator who exerts the pressure, by the audible click of the returns 20, 21 of the steps 18, 19, which are put in place under the wings. interiors 33, 34

  profiles 5, 6, respectively; the operator then ceases to exert pressure on the heel.

  The closure device according to the invention can be made of any rigid elastic material, for example a plastic material of ABS type or the like, conferring appropriate mechanical properties and making it possible to manufacture the cheek and the heel of

  monoblo c by a molding process, respectively.

Claims (9)

  1. Closing device (1) for lateral ends (2) of the trunk (3) of rolling rollers, said trunk comprising a bottom (4) from which extend two longitudinal walls (5, 6), the free ends ( 7, 8) respective longitudinal wind provided with a longitudinal profile (9, 10), said bottom and said longitudinal walls defining two recesses (11) at the lateral ends (2) of the trunk and an interior space (13) in which is intended to be housed with the roller shutters, said closure device comprising a cheek (14) intended to engage with said trunk in order to close a lateral end (2) of the latter and a heel (16) integral with said cheek intended to be associated with said longitudinal profiles in order to participate in the fixing of the heel and cheek assembly at the lateral end of the boot,   said closure device being characterized in that it comprises means of anti-   lifting (17) of the heel and cheek assembly when it is fixed to the lateral end of the said trunk, comprising at least two flexible hoses (18, 19) connected to said heel (16) and carrying two returns (2O, 21) respectively, intended to engage on parts (22, 23) of the two longitudinal profiles (9, 10) of the trunk respectively, which wind opposite the space (13) inside the trunk defined by the bottom (4) and the two longitudinal walls (5, 6), by means of their flexibilities and their elasticities   to prevent a lifting of the heel and cheek assembly.   2. Closure device according to claim 1, characterized in that it further comprises anti-tilt means (24) of the cheek assembly (14) and heel   (16) when the latter is fixed at the lateral end to said trunk (3).   3. Closure device according to claim 1 or 2, characterized in that it further comprises anti-separation means (25) of the longitudinal walls of said trunk (3), when said heel assembly (16) and cheek (14) is fixed at the lateral end of the trunk.   4. Closure device according to any one of claims 1 to 3,   characterized in that said heel (16) and said cheek (14) are linked by means of a connection (46, 47, 26, 39) allowing at least one degree of freedom in translation of the cheek (14) through relative to the heel (16).   5. Closure device according to claim 4, characterized in that said heel (16) and said cheek (14) wind linked by a link (46, 47, 26, 39) further allowing   angular mobility of the cheek (14) relative to the heel (16).   6. Closure device according to any one of claims 2 to 5,   characterized in that said anti-tilt means (24) of the cheek assembly (14) and heel (16) when the latter is fixed at the lateral end to said trunk (3) comprise two transverse projections (27, 28) arranged on said cheek, in an area close to the junction with the heel, projections (27, 28) intended to penetrate into the boot (3) in order to perform the anti-tilt function, the latter including a soft material in the   penetration area of said transverse projections.   7. Closure device according to any one of claims 3 to 6 ,,   characterized in that said means of anti-spacing (25) of the longitudinal walls (5, 6) to said trunk (3), when said heel (16) and cheek (14) assembly is fixed at the lateral end to said trunk, comprise at least two longitudinal ribs (29, 30) arranged on said cheek, intended to nest in said profiles respectively   view of realizing the anti-separation function of the longitudinal walls (5, 6) in said trunk.   8. Closure device according to any one of claims 3 to 6 ,,   characterized in that said means of anti-spacing (25) of the longitudinal walls (5, 6) to said trunk (3), when said heel (16) and cheek (14) assembly is fixed at the lateral end to said trunk, include two screws intended to be inserted in the two walls   longitudinal (5, 6) of the trunk (3) respectively, via said heel.   9. Closure device according to any one of claims 1 to 8 ,,   characterized in that said cheek (14) intended to engage said trunk (3) in order to close a lateral end (2) of the latter comprises means of anchoring teeth (15) allowing said setting taken with the trunk (3), the latter comprising a   soft material in the engagement area.