FR2822076A1 - ASSEMBLY FOR RETAINING A FOOT ON A MACHINE INTENDED FOR THE PRACTICE OF A SPORT - Google Patents

Abstract

Set for retaining a foot on a sports machine (1), comprising a shoe (2) and a support (3). The shoe has four transverse studs (10, 11, 12, 13) from which their studs are retractable. The support has two front wings (40, 41) and two rear wings (60, 61), the latter having a housing (62, 63) for receiving a stud. Each front wing (40, 41) has an open housing (42, 43) and a ramp (44, 45) for longitudinal guidance. Each rear wing has a closed housing (62, 63) for retaining a stud and a ramp for longitudinal guide of the rear studs towards their respective retaining housing.

Description

passage of the fixing straps.

  The invention relates to the field of foot retention assemblies on a gliding or rolling machine intended for the practice of a sport. Such sets are used for the practice of skiing on snow or water, snowboarding or snowboarding, roller skating, snowshoeing,

mountaineering, or whatever.

  A set usually includes a shoe and a

  support of the shoe on the machine.

  It is advantageous to ensure on the one hand that the retention of the shoe on the support is precise, so that as a consequence the behavior of the machine is precise, and

  on the other hand that the shoe allows an easy walk.

  To meet this double requirement, the prior art has

proposed solutions.

  For example, document FR 2 749 483 discloses an assembly comprising a shoe and a support for the shoe. According to this document, studs from the side walls of the shoe cooperate with wings from a base of the support, for the removable retention of the shoe on the support. There are four studs and wings respectively. Two studs are behind the front of the shoe on each side. Two other studs are in front

  relative to the back of the shoe, each on one side.

  This distribution of studs and wings allows a holding

  precise of the shoe on the support.

  Furthermore, the distribution of the studs makes it possible to give

  the shoe a structure that makes walking easy.

  Sometimes the shoe is put on the support

  is difficult, because the shoe is done blind.

  The object of the invention is in particular to facilitate fitting for an assembly in which the retention of the boot is made

using studs and wings.

  To this end, the invention provides an assembly for retaining a foot on a machine, intended for the practice of a sport, the assembly comprising a shoe and a support for the shoe on the machine, the shoe having four pads arranged horizontally and transversely, two fixed pads each being set back from one end of the shoe sole and projecting laterally, two retractable pads each being set back from the other end of the shoe sole and projecting laterally, the support having a base, two first wings projecting above the base, each at a lateral edge of the base and facing

the other transversely.

  According to the invention the assembly is characterized by the fact that each of the first wings has a housing open longitudinally and a longitudinal ramp provided to receive a fixed stud at the bottom of the housing, and by the fact that each of the second wings has a closed housing retaining studs retractable and a longitudinal and transverse guide ramp provided to guide the studs

  retractable to their respective retainer.

  To fit, the user first brings the fixed studs to the entrance of the open accommodation. Then it is enough to press with the leg towards the base. During the pushing of the leg, the longitudinal and transverse ramps guide the heel of the shoe in a sense of reaction and lowering, until the fixed studs and the retractable studs are retained simultaneously in their respective housings. At the same time as the heel reacts, the front studs move back towards the

front housing bottom.

  It advantageously follows that the fitting operation

is made easier.

  Other features and advantages of the invention

  will be better understood using the description which follows,

  with reference to the appended drawing illustrating, according to nonlimiting examples, how the invention can be implemented, and in which: - Figure 1 is an exploded perspective view of a retaining assembly, according to a first embodiment of the invention, - Figure 2 is a side view of the shoe of the assembly of Figure 1, - Figure 3 is a bottom view of the shoe of the assembly of Figure 1, - Figure 4 is a perspective view of the support of the assembly of Figure 1, - Figure 5 is a side diagram of the assembly of Figure 1, at the start of the fitting, - Figure 6 is a side diagram of the assembly of FIG. 1, when a downward vertical thrust is exerted on the shoe, FIG. 7 is a side diagram of the assembly of FIG. 1, booting made, - FIG. 8 is a side view of a shoe according to a second embodiment of the invention, - Figure 9 is a perspective view of a support according to a third embodiment of the invention, - Figure 10 is a perspective view of a support

  according to a fourth embodiment of the invention.

  The first example is described below using the

Figures 1 to 7.

  As shown in Figure 1 a restraint system, one foot on a snowboard 1, includes a boot 2

and a support 3.

  In known manner, the shoe 2 comprises a sole 4 extended upwards by a rod 5. The sole 4 and the bottom of the rod form a relatively rigid piece, made for example from a synthetic material such

than plastic.

  As best shown in Figure 2, the sole 4 of the shoe 2 is shaped to facilitate walking. To this end, the sole is rounded and raised at the front end 6 of the shoe. By analogy the heel is rounded and raised at the rear end 7 of the shoe. This sole shape allows the unwinding of the foot

during the walk.

  Furthermore, the top of the upper 5 comprises means for detachably holding the foot, as is well known to those skilled in the art.

job.

  As best seen in Figure 3, the shoe 2 is provided with four studs 10, 11, 12, 13 arranged horizontally and transversely. Two front studs 10, 11 are set back from the front end 6 of the shoe, and projecting laterally on the lateral edges of the sole 4 set back relative to the contact surface of the sole. The front studs 10, 11 are fixed relative to the shoe sole 2. These studs are preferably substantially at the level of the metatarsus when the foot is in the shoe. Two retractable rear studs 12, 13 are set back from the rear end 7 of the shoe, and projecting laterally, set back relative to the contact surface of the sole 4. These studs are preferably at the heel

  of the foot when the latter is in the shoe.

  In the illustrated embodiment, the studs 10, 11, 12, 13 are cylindrical, but they could have had other shapes. They are made for example of metal alloy or

made of synthetic material.

  A device for retracting the rear studs 12, 13 inside the sole is integrated into the shoe 2. This device is for example produced in accordance with what is described in patent application EP 680 775 cited here for reference. I1 allows the studs 12, 13 to be brought in transversely inside the sole, by pulling on a

  handle as that designated by the reference 14 in FIG. 1.

  Other construction methods may also be suitable.

  To keep the studs 12, 13 projecting from the elastic means, such as springs, permanently urge

  the studs 12, 13 in a direction of exit from the heel.

  To retain the shoe 2 on the board 1, the support 3 is structured as seen for example on the

figure 4.

  The support 3 comprises a base 20, one upper face 21 of which faces the sole 4, and one face of which

  lower 22 comes above board 1.

  The base 20 extends longitudinally between a rear end 23 and a front end 24, and transversely between

  a first lateral edge 25 and a second lateral edge 26.

  The length of the base is equal to or less than the

  length of the shoe sole.

  The base 20 is retained on the board 1 by a means shown in the form of a disc 30, itself removably secured to the board 1 for example using screws 31, 32, 33, 34. The disc 30 makes it possible to orient the support 3 in rotation relative to the board. Other construction methods could be suitable for assembling the base to the board. The support 3 has means for retaining the shoe so that it is removable, which decomposes into a front part and

a rear part.

  For the front part of the retaining means, the support 3 comprises two front wings 40, 41 projecting above the base 20. Each wing 40, 41 is at a lateral edge, 26 and opposite the another cross. The front fenders 40, 41 have a distance between them substantially equal to the width of the shoe sole at the level of the front studs. According to the invention, each of the front wings 40, 41 respectively has a housing 42, 43, open longitudinally towards the front, to accommodate a front stud 10, 11. The housing 42, 43 are opposite one another transversely. Each of the housings 42, 43 generally has the form of an open hook extended forward with a lower ramp 44, 45 for access to a retaining zone 47, 48 where the studs are retained in abutment towards the rear at the bottom of the housings and vertically by the upper edges 46, 47

housing.

  The housings cross the wings right through. this

  is not limiting and the accommodation could be blind.

  According to the illustrated embodiment, the front ramps 44 and 45 are rectilinear and horizontal and located in front of the housings 47 and 48. They could also be logically inclined. For the rear part of the retaining means, the support 3 comprises two rear wings 60, 61, projecting above the base 20. The spacing of the wings is determined so that the sole can engage with each other easily. , the shoe is held transversely on the support 3. They have a distance between them substantially equal to the width of the

  shoe sole at the rear studs.

  The rear wings 60, 61 respectively have a closed housing 62, 63 having in section a shape and dimensions corresponding to those of a stud, to each retain a rear stud 12, 13. The housings 62, 63 are oriented transversely, and emerge opposite each other. According to the illustrated embodiment, they cross the wings right through. Alternatively, they could be blind. The distance between the front and rear housings of the base is equal to the distance between the front and

back of the shoe.

  To fit the rear studs 12, 13 of the shoe into the housings 62, 63 of the rear wings 60, 61, of the transverse ramps 64, 65 and of the longitudinal ramps 70

  and 71 are formed in the wings.

  Each transverse ramp 64, 65 extends respectively from an upper face 66, 67 of the wing to the housing 62, 63. Each ramp 64, 65 is inclined traneverealement, towards the inside of the support from the top. The space between the ramps 64, 65 at their top is greater than or equal to the overall overall dimensions of the rear studs in the extended state. The ramps converge downwards until the opening of the housings 62 and 63. When the heel of the shoe 2 is biased downward, the rear studs 12, 13 are retracted in contact with the ramps 64, 65. When the studs 12, 13 arrive opposite the housings 62, 63, the elastic means repel the

  studs inside their respective retaining housing.

  Preferably, in their retaining housing the studs hold the shoe sole suspended above the base 20, so that a wedge of snow possibly

  does not interfere with the fitting.

  According to the invention, there are also provided two longitudinal ramps 70, 71 for guiding the rear studs of the shoe 2, in a longitudinal direction towards their respective housing. The ramps 70, 71 are formed in the rear wings 60, 61. According to this illustrated embodiment, they are rectilinear and inclined backwards and downwards from the upper face 66, 67 of the rear wing 60, 61 until

the opening of a housing 62, 63.

  The longitudinal ramps 70, 71 are opposite one of

the other transversely.

  The inclination and the length of the ramps 70 and 71 is determined as a function of the spacing of the studs of the sole and the front ramps 44 and 45. When the front studs 10 and 11 of the sole bear on the front ramps 44 and 45 , the rear studs 12 and 13 are likely to come into contact with

  rear ramps 70 and 71 according to the inclination of the sole.

  The internal faces of the wings also contribute to guiding the studs by transversely guiding the shoe sole. Preferably, the base 20 and the wings 40, 41, 60, 61 form a single piece, made for example from

  of a metallic alloy or with a synthetic material.

  However, provision could be made for the wings to be attached to the base 20 by any means such as bonding,

  welding, nesting, screwing, riveting, or the like.

  The boot of shoe 2 on support 3 is

  explained below using figures 5 to 7.

  First of all, the shoe 2 is brought above the support 3, as seen in FIG. 5, so that the front studs 10, 11 bear on the ramps 44, 45 of the front wings 40, 41 in front housings, and that the rear studs 12, 13 are located above the ramps of the wings

rear 60, 61.

  Then the back of the shoe 2 is lowered as is the case in Figure 6. The reaction of the ramps

  longitudinal 70, 71 induces a retreat of the whole shoe.

  The front studs 10, 11 move back towards the bottom of the housings 42, 43. The rear studs 12, 13 descend at the same time as they react and retract until they appear in

the opening of housings 62 and 63.

  When the heel is completely lowered, as is the case in Figure 7, the boot is done. The rear studs 12, 13 are then retained in the housings 62, 63 of the rear wings, and the front studs 10, 11 are retained in the

housings 42, 43 of the front fenders.

  For heaving, the user actuates the handle 14 so as to retract the rear studs. The rear part of the sole is then released, the shoe can be released by

a simple movement forward.

  Preferably, as best seen in FIGS. 3 and 4, a rib 75 projecting above the base 20 can be provided between the front wings 40, 41. In a longitudinal direction, the rib is designed to cooperate with a cavity 76 at the front of the shoe sole. It is used to reduce the contact surface between the shoe and the base during the shoeing maneuver. The top of the rib 75 and the bottom of the groove 76 which are intended to come into contact with one another preferably have a low

coefficient of friction.

  The presentations of the other exemplary embodiments of the invention are made below in a simplified manner, and only show the differences from the first.

example.

  The second example is presented using Figure 8.

  I1 differs from the first only by the fact that the shoe 80 used is constructed from a relatively flexible sole 81, extended upwards by a rod 82 also

relatively flexible.

  Therefore, the front studs 83, 84 and the rear studs 85, 86 are mounted on a relatively rigid housing 87, itself fitted from below in the sole 81. The flexibility of the shoe allows walking, and the progress of the foot is not or little bothered by the presence of the case, because it extends appreciably from the metatarsus to the heel when the foot is

shoe.

  The third example is presented using Figure 9.

  It concerns the technical field of piste skiing.

  A shoe support 100 is secured to a ski 101 by means of a triggerable retaining device 102. The support 100 is fixed to the retaining device 102 by a means shown in the form of four screws 103, 104, 105, 106. Of course, other means of attachment could be suitable. The triggerable retaining device 102 is known to those skilled in the art. I1 includes an upper plate 107 which separates from a lower plate 108 in the event of stress

  excessive, the lower plate remaining on the ski 101.

  Incidentally, a brake 109 is provided at the rear of the

support 100.

  Of course, other structures could be provided

  for the triggerable restraint.

  On the other hand the support 100 could be mounted directly on the ski 101, especially if the ski is a short ski. The fourth example is presented using the figure

  10. It concerns the technical field of inline skating.

  A skate frame 120 comprises a shoe support 121 according to the invention, the support being extended downwards by arches 122, 123. These latter serve to mount wheels 124, 125, 126, 127. A shoe can be solidarisoe

  removably to the support 121 to form the pad.

  Although the chassis is here in one piece, it could be expected that the support is attached to a base itself extended by the arches. In this way the shoe support could be separated from a subassembly comprising

the wheels.

  In general, the invention is made from all materials and according to all known techniques of

one skilled in the art.

  Of course, the invention is not limited to the examples described above, and includes all the technical equivalents

  which may fall within the scope of the claims which

  to follow. In particular, other forms could be given

  to the wing housings, to the ramps, and to the wings themselves.

  One could also reverse the relative position of the front and rear studs on the shoe so as to have the retractable studs on the front. In this case the maneuver of

  footwear would start from the back.

  Also the front and rear guide ramps could be located not on the front but on the rear of the housings with which they are associated respectively and the front housings could be opened on the rear. In this case when fitting, the engagement of the shoe would produce a

  shoe forward movement.

Claims (8)

  1- A set for retaining a foot on a machine (1, 101) intended for the practice of a sport by means of a sliding or rolling machine, the assembly comprising a shoe (2, 80) and a support (3, 100, 121) of the shoe (2, 80) on the machine, the shoe (2, 80) having four studs (10, 11, 12, 13, 83, 84, 85, 86) arranged horizontally and transversely, two fixed studs (10, 11, 83, 84) each being set back from one end (6) of the shoe sole (2, 80) and projecting laterally, two retractable studs (12, 13, 85 , 86) being each set back from the other end (7) of the shoe sole (2, 80) and projecting laterally, the support having a base (20), two first wings (40, 41) projecting at the above the base (20), each at a lateral edge (25, 26) of the base (20) and opposite the other transversely, two second wings (60, 61) projecting at above the base (20), each at a lateral edge (25, 26) of the base (20) and facing the other transversely, characterized in that each of the first wings (40, 41) has an open housing (42, 43) and a longitudinal front ramp (44, 45 ) designed to accommodate a fixed stud (10, 11, 83, 84) at the bottom of its respective housing and that each of the second wings (60, 61) has a closed housing (62, 63) for retaining the retractable studs (12, 13, 85, 86) and a longitudinal and transverse guide ramp (70, 71, 64, 65) formed on the support (3, 100, 121) provided to guide the retractable pads   (12, 13, 85, 86) to their respective retaining housing.   2- retaining assembly according to claim 1, characterized in that the front ramps (44, 45) are straight and horizontal.   3- restraint assembly according to claim 1, characterized in that the rear ramps (70, 71) are straight and inclined.   4- assembly according to claim 1, characterized in that the front housings (42, 43) are open towards the front of the base, that the front ramps (44, 45) are located towards the front of the front housings , and that the rear ramps (70, 71)   are located towards the front of the rear housings (62, 63).   - Assembly according to claim 1, characterized in that the front and rear ramps (44, 45, 70, 71) have a distance between them of the same order of magnitude as the distance   between the front and rear studs (10, 11, 12, 13).   6- retaining assembly according to claim 1, characterized in that the front wings (40, 41) have between them a distance substantially equal to the width of the part   front of the shoe sole at the front studs.   7- assembly according to claim 1, characterized in that the rear wings (60, 61) have between them a distance substantially equal to the width of the rear part   from the shoe sole to the rear studs.   8- assembly according to claim 1, characterized in that the studs (83, 84, 85, 86) are projecting relative to a housing (87) reported by fitting under the shoe sole. 9- Support for retaining a shoe on a sliding or rolling machine, the support having a base (20) bordered by two first wings (40, 41) and two second wings (60, 61) projecting along lateral edges of the base, characterized in that the first wings each have a front housing (42, 43) and a longitudinal guide ramp (44, 45) and the second wings each have a closed housing (62, 63 ) and a tranevereal guide ramp and longitudinal (64, 65, 70, 71).   - Shoe for practicing a sport by means of a sliding or rolling machine comprising a sole with a contact surface, characterized in that the sole has two fixed studs (10, 11, 83, 84) s 'extending laterally and recessed relative to the contact surface of the sole and two retractable studs (12, 13, 85, 86) extending laterally and recessed by   relative to the contact surface of the sole.   11- Shoe according to claim 10, characterized in that the studs (83, 84, 85, 86) are projecting relative to a housing (87) reported by fitting under the