FR3116996A1 - Protective shell for shoe with nails. - Google Patents

Abstract

The invention relates to a protective shell (100) for a shoe with nails (200) comprising a front part and a rear part, the front part being able to be equipped with nails, the shell (100) comprising a sole (110) comprising a front part (101) and a rear part (102). It is essentially characterized in that: the front part (101) and the rear part (102) of the shell (100) are configured to cooperate with the front part and the rear part of the nail shoe (200) respectively, and in that the shell (100) further comprises: a peripheral rim (120), integral with the sole (110), a peripheral cable tightening device (160), integrated with said peripheral rim (120). Figure for abstract: Fig. 1

Description

Protective shell for shoe with nails.

The present invention relates to the field of athletics.

Studded shoes have studs, implanted under the sole, allowing the athlete to better hang / grip the track, and thus increase their performance.

In the field of athletics, it is common to call "spikes" both the shoes and the nails of said shoes.

For the sake of clarity, within the meaning of the present description, the term "spikes" is understood to mean only studded shoes which can be equipped with studs, whether the studs are mounted on said spikes or not. We therefore hear “spikes” and “shoes” indistinctly.

An athletics spike is a technical shoe that generally has 5 to 8 cavities under the outsole into which sharp nails are aimed. These studs are intended to improve grip on the athletics track.

The location of these nails may be different depending on the model and the discipline for which they are suitable. Their length can also vary depending on the use, for example from 6 mm to 15 mm.

The nails of these shoes are made of metal, they must be sharp to be and remain effective. However, these nails tend to wear out quickly (become less sharp) when the athlete walks off the track on hard surfaces, for example such as tiles, concrete, etc.

Like the hull that ice skaters put on when they leave the rink, it appears necessary to protect the studs when an athlete walks with his spikes equipped with studs on surfaces other than the material conventionally used for the tracks. athletics.

Indeed, the nails that appear under the sole of the toe are subject to flattening, significant wear when they come into contact with surfaces other than those of athletics tracks.

In this case the nails face premature wear, therefore a loss of efficiency.

In addition, to change nails, an athlete must have at least one special key, as different categories of nails may require different keys.

In training or in competition, to avoid taking off his shoes or nails as soon as he leaves the track, for example for the call room, the bleachers, the toilets, etc. an athlete keeps his shoes and modifies his gait by adopting a so-called "penguin walk", in which he walks only on the back of their feet in order to avoid damaging the nails which are positioned only at the front of the shoes .

In this context, the present invention relates to a protective shell (100) for a shoe with nails (200) comprising a front part and a rear part, the front part being able to be equipped with nails, the shell (100) comprising a sole (110) comprising a front part (101) and a rear part (102).

It is essentially characterized in that:
the front part (101) and the rear part (102) of the shell (100) are configured to cooperate with the front part and the rear part of the shoe with nails (200) respectively,
and in that the shell (100) further comprises:
a peripheral rim (120), integral with the sole (110),
a peripheral cable clamping device (160), integrated with said peripheral flange (120).

It is also possible to provide a cushion (130), positioned in the front part of the shell (100).

Provision can be made for cushion (130) to be made of elastomer.

It is also possible to provide a transverse stop (103), separating the front part (101) and the rear part (102) of the shell (100), and serving as a stop in translation for the cushion (130).

It is possible to provide that the shell (100) has a concave shape (106) which matches the arch shape of the arch of the foot.

Provision can be made for the cushion (130) to be held in the front part of the sole (110):
- By force positioning in the shell (100); Or
- by gluing; Or
- By repositionable attachment means.

Provision can be made for cushion (130) to be made of thermoplastic elastomer material.

Provision can be made for the clamping device to adopt at least the following two positions:
- a release position in which the nail shoe (200) can be inserted into the shell (100) or removed therefrom, and
- a clamping position in which the shoe with nails (200) is held in the shell (100).

Provision may be made for the clamping device to further comprise:
- Either a cable clamp (160);
- or a tightening knob (140) comprising a toothed wheel and a non-return pawl.

Provision may be made for the clamping device to comprise a clamping wheel (140); and wherein the clamping wheel (140) also includes a release device which includes at least one of:
- a first crank (141), the actuation of which completely frees the cable (160) from the tightening knob (140), and
- a second crank (142) whose actuation releases the cable (160) from the clamping knob (140) in increments.

The present invention makes it possible to protect the nails under the shoes with nails, just like the rear part of the shoes with nails, to move outside the athletics track with the tiptoes.

It can be adapted to several nail configurations, whether in length, number or position of the nails.

The present invention also makes it possible, thanks to its tightening device, for the same shell to be adaptable to several shoes, whether in size, shape or model.

Putting on a shoe in a shell according to the invention, as well as removing it, are very quick and easy.

A shell according to the invention protects not only the nails but also the heel of a shoe with nails, which allows natural walking and comfort.

The present invention can be implemented for all athletic disciplines requiring nails on the front part of the foot, for example: sprinting, hurdles, long jump, triple jump, pole vault and half -bottom. The present invention can also be implemented for bobsleigh shoes.

By "shoe with studs", we mean a shoe for athletics or bobsleigh, or any other discipline, likely to include studs only on its front part.

Other characteristics and advantages of the present invention will appear more clearly on reading the following description given by way of illustrative and non-limiting example and made with reference to the appended figures.

illustrates a shoe with nails in one embodiment of a shell according to the invention,

illustrates a side view of an embodiment of a shell according to the invention,

illustrates a cross section of a profile view of an embodiment of a shell according to the invention,

illustrates a 3/4 view of an embodiment of a hull according to the invention,

illustrates a bottom view of an embodiment of a hull according to the invention,

illustrates a 3/4 view of an embodiment of a hull according to the invention,

illustrates a top view of an embodiment of a hull according to the invention

illustrates an embodiment of a shell according to the invention in a partially bottom view.

illustrates a cross-section of a shoe with nails in one embodiment of a shell according to the invention.

detailed description

An embodiment of a hull 100 according to the invention is illustrated in the .

Shell 100 includes a flexible material. Preferably, the material of the shell 100 is elastic.

The hull 100 comprises a sole 110.

The shell 100 also comprises a peripheral rim 120, secured to the sole 110 by the peripheral contour of the latter.

Preferably the peripheral rim 120 and the sole 110 are made of the same material, preferably an elastic material.

More specifically, the shell 100 is based on an elastomer, ethylene vinyl acetate, or rubber.

In this case, the shell 100 is a polyurethane thermoplastic elastomer with a Shore hardness scale of 60, which makes it possible to adapt the shell 100 to different shapes of nail shoes.

Preferably, the thickness of the sole 110 is substantially constant.

Also preferably, the sole 110 is solid, that is to say free of holes and made of a waterproof material. Thus, users can walk in puddles with the 100 shells without damaging their nail shoes or getting their feet wet.

The sole 110 has an outer face 111, intended to be in contact with the ground, whatever the coating (track, concrete, etc.), and an inner face 112, intended to be in contact with shoes with nails and a cushion 130 described later.

For example, as shown , the outer face 111 is flat.

The sole 110 has a front part 101 and a rear part 102. The front part 101 substantially corresponds to the part of the foot which is located in line with the metatarsals and the phalanges of the toes. The rear part 102 substantially corresponds to the other part of the foot, that is to say from the heel to the arch of the foot inclusive.

Preferably, the front part 101 and the rear part 102 are separated from each other by a transverse stop 103. In this case the transverse stop 103 is molded with the shell 100, see in particular the .

The shell 100 also incorporates a cushion 130, positioned in the front zone of the sole 110, and covering the whole of the latter.

The material and the thickness of the cushion 130 are chosen so that, when a shoe with nails 200 is positioned in the shell 100, the nails 201 of the shoe with nails 200 come into abutment on the cushion 130 or in the latter. , without touching the internal face 112 of the sole 110, as illustrated .

The cushion 130 makes it possible to absorb the mechanical energy of the studs 201. Thus, when an athlete walks with his studded shoes equipped with studs 201 and shells 100 according to the invention, the cushion 130 does not damage the studs 201, that is, cushion 130 does not dull nails 201.

Preferably the cushion 130 is made of flexible and soft material. It can be made in a synthetic foam. In this case, the cushion 130 is made of thermoplastic elastomer material, more precisely a styrene-butadiene-styrene (SBS) or styrene-ethylene/butylene-styrene (SEBS) block copolymer. Preferably, the cushion 130 has a low hardness scale, that is to say less than or equal to 20 on the Shore hardness scale, and in this case a value equal to 5 on the Shore hardness scale. .

In a first variant, the cushion 130 is positioned by force in the front part 101 of the sole 110. It is held in abutting position against the transverse stop 103 and the peripheral rim 120. cushion 130 slides from the front part 101 of the shell 100 towards the rear part 102 thereof. This variant makes it possible to change the cushion 130 very easily if it deteriorates.

In a second variant, the cushion 130 is held in the front part 101 of the sole 110 by means of repositionable attachment means, for example a self-gripping closure, typically a textile hook and loop closure, known in particular under the trade mark deposited "Velcro", part of which, for example that comprising the hooks, is secured to the front part 101 of the sole 110, in this case by gluing on its upper face; and the other part of which, for example that comprising the textile loops, is secured to the cushion 130, in this case by gluing, to the underside of the cushion 130. This variant also makes it possible to change the cushion 130 very easily if it is this deteriorates and to adapt the position of the latter in the front part 101 of the sole 110.

In a third variant, the cushion 130 is held in the front part 101 of the sole 110 by means of an adhesive.

Thus, when an athlete walks with his shoes with nails equipped with nails 201 and shells 100 according to the invention, the heel of the shoes with nails comes into abutment against the rear part 102 of the sole 110, which protects said shoes and which avoids the penguin walk and the musculoskeletal disorders that can result from it.

The cushion 130 can be adapted to all tip locations.

Provision can be made for the cushion 130 to have a contact surface with the shoe with nails 200 that is substantially planar.

Provision may be made for the cushion 130 to comprise a set of recesses, preferably non-through holes or grooves or channels (not shown). The recesses are made in the upper face of the cushion 130, opposite to that in contact with the sole 110.

The recesses can be in the form of circular, square, oblong holes, or grooves. They are configured so that when a shoe with nails 200 is positioned in a shell 100, each nail 201 thereof comes to the right of a recess.

Thus, each nail 201 "sinks" into a recess. Provision may be made for the depth of the recesses to be equal to the length of the nails 201. A safety margin may also be provided. In this case, the depth of the recesses is equal to the length of the nails 201 plus the safety margin, in this case equal to 20%.

At the junction point between the peripheral rim 120 and the sole 110, the latter is preferably substantially perpendicular to the sole 110, with the exception of the arch of the foot where the peripheral rim 120 matches the shape of the arch of the foot.

Preferably, the peripheral rim 120 also matches the shape of the heel, which facilitates the donning of the shell 100 on the shoe with nails 200 and the removal of the shell 100.

Also preferably, the peripheral rim 120 has a cant 104 at the level of the toes, so as to create an abutment against which at least one of the toes can come, which facilitates walking and maintaining the shell 100 on the shoe with nails. 200, as shown in particular .

Preferably, the peripheral rim 120 has a substantially constant height on the lateral sides, and in this case less than 2 cm, and a height less than or equal to 5 cm at the heel, as illustrated in the .

In this case, the peripheral edge 120 leaves free: the instep, the part corresponding to the metatarsus and the front part of the ankle; that is to say that the peripheral rim 120 does not cover any of these parts, which facilitates both the handling of the shells 100 and the shoes with nails, that is to say putting on and removing the shells 100 from the shoes with nails, and walking.

Shell 100 also includes a clamping device.

The clamping device can adopt at least the following two positions: a release position in which the nail shoe 200 can be inserted into the shell 100 or removed therefrom, and a clamping position in which the nail shoe 200 is held in shell 100.

The tightening device comprises a cable 160, or lace, which allows tightening of the shell 100 on the shoe with nails 200, thus allowing the shell 100 to hold attached to the shoe with nails 200 when the cable 160 is taut.

The cable 160 is peripheral, and thus has a curved shape around the foot, without passing over the foot, without zig zag.

The tightening device also comprises a cable locking element 160, to lock the latter in the tightening position.

In a first variant, the clamping device comprises a stopper, also called cable clamp 160 or cable block 160 known for example in the field of haberdashery, in particular at the following address https://www.lamerceriedescreateurs.fr/mercerie- and-accessories/5268-block-cord-metal-nickel.html. The cable lock 160 comprises a through hole, a stopper and an elastic element, in this case a spring, integral with the stopper. At least one strand of the cable 160 passes through the through hole and the return force of the spring makes it possible to block the cable 160 in translation, which is known for example in the field of compression bags equipped with a drawstring.

In a second variant, the tightening device comprises a tightening wheel 140, positioned at the rear of the shell 100, at the level of the heel, mechanically fixed in a housing 105 provided for this purpose, for example by overmolding or by gluing.

The tightening wheel 140 winds the cable 160 by turning it in a predetermined direction, which tightens the cable 160 around the shell 100. It comprises for this purpose a toothed wheel and an anti-return pawl.

Preferably, the tightening wheel 140 also includes a release device, to release the cable 160 from the tightening wheel 140.

In a first variant, the rotation in a predetermined direction of the tightening wheel 140 makes it possible to tighten the cable 160, and the rotation of the tightening wheel 140 in the other direction makes it possible to loosen the cable 160.

In a second variant, the loosening is implemented using a set of at least one crank.

In this case, see in particular the Or , the release device comprises a first crank 141, the actuation of which completely releases the cable 160 from the clamping wheel 140, in this case by completely releasing the anti-return pawl of the toothed wheel. It is possible to provide that the release device also comprises a second crank 142 whose actuation makes it possible to release the cable 160 from the tightening knob 140 in increments, in this case by raising the anti-return pawl in increments, which allows adjustment end of tightening. In this case, each increment corresponds to one tooth of the toothed wheel.

Cable 160, in this case a thin stainless steel lacing cable 160 impregnated with a nylon, is attached to the shell 100 via eyelets 150 integrated into the shell 100 and through which the cable 160 passes.

It is thus sufficient to turn the clamping wheel 140 to wind or unwind the cable 160 which exerts a clamping force on the part of the shell 100 against which the cable 160 is positioned.

The lacing, or tightening, of the cable 160, tightens the shell 100 on itself in its width and in its length.

The tightening knob 140 is located on the rear vertical face of the hull 100. The cable 160 is installed on the periphery of the hull 100, all around it.

To this end, a set of peripheral eyelets 150 are provided, integrated into the shell 100. A groove can also be provided in the shell 100 to facilitate tightening of the cable 160.

The lacing, that is to say the tightening of the cable 160 increases the curvature of the shell 100. The latter undergoes a flexible deformation, a contraction of the order of 20 mm in length, and 5 mm in width according to applicant's tests.

Thus the same shell 100 can be used for several sizes of studded shoes, in this case 3 consecutive sizes.

The eyelets 150 are made for example by plastic injection.

The eyelets 150 are positioned in the upper part of the peripheral rim 120 and over the entire length thereof.

Preferably, at least one eyelet 150 is provided at the cant 104 of the peripheral rim 120, as illustrated in particular in the .

The inner part of the foot has an arch shape at the arch of the foot. Advantageously, the shell 100 has a concave shape 106 which matches the shape of the arch, see in particular .

Preferably, several eyelets 150 are provided, in this case 3 eyelets 150, or 1 large curved eyelet 150, to match the arch shape of the arch of the foot, which makes it possible to increase the hold of the shell 100 on the 200 nail shoe while walking.

Thanks to the present invention, the shell 100 is free of strap on the foot, or webbing strap on the heel, which not only facilitates the use of the shell 100, but also protects the foot of the user by limiting the risk of cuts.

***

Nomenclature
100 hull
101 front part
102 rear part
103 transverse stop
104 cant
105 housing for clamping wheel
106 concave shape
110 sole
111 external side
112 inner side
120 peripheral edge
130 cushion
140 clamping wheel
141 first crank
142 second crank
150 carnation
160 Cable clamp
200 Studded Shoe
201 Studded shoe nail

Claims (10)

Protective shell (100) for shoe with nails (200) comprising a front part and a rear part, the front part being able to be equipped with nails, the shell (100) comprising a sole (110) comprising a front part ( 101) and a rear part (102),
characterized in that
the front part (101) and the rear part (102) of the shell (100) are configured to cooperate with the front part and the rear part of the shoe with nails (200) respectively,
and in that the shell (100) further comprises:
a peripheral rim (120), integral with the sole (110),
a peripheral cable clamping device (160), integrated with said peripheral flange (120). A shell (100) according to claim 1, further comprising a cushion (130), positioned in the forward portion of the shell (100). A shell (100) according to claim 2, wherein the cushion (130) is made of elastomer. Shell (100) according to any one of claims 2 to 3, further comprising a transverse abutment (103), separating the front part (101) and the rear part (102) of the shell (100), and serving as a in translation to the cushion (130). Shell (100) according to any one of the preceding claims, the shell (100) has a concave shape (106) which conforms to the arch shape of the arch of the foot. Shell (100) according to any one of claims 2 to 5, in which the cushion (130) is held in the front part of the sole (110):
- By force positioning in the shell (100); Or
- by gluing; Or
- By repositionable attachment means. Shell (100) according to any one of Claims 2 to 6, in which the cushion (130) is of thermoplastic elastomer material. Hull (100) according to any one of the preceding claims, in which the clamping device can adopt at least the following two positions:
- a release position in which the nail shoe (200) can be inserted into the shell (100) or removed therefrom, and
- a clamping position in which the shoe with nails (200) is held in the shell (100). A shell (100) according to any preceding claim, wherein the clamping device further comprises:
- Either a cable clamp (160);
- or a tightening knob (140) comprising a toothed wheel and a non-return pawl. A shell (100) according to claim 9, wherein the clamping device comprises a clamping knob (140); and wherein the clamping wheel (140) also includes a release device which includes at least one of:
- a first crank (141), the actuation of which completely frees the cable (160) from the tightening knob (140), and
- a second crank (142) whose actuation releases the cable (160) from the clamping knob (140) in increments.