FR2589689A1 - SPORT SHOE WITH RETRACTABLE CRAMPONS - Google Patents

Abstract

THE STUDS 3 OF THE SHOE ARE RETRACTABLE AGAINST THE ACTION OF AT LEAST ONE 26 TARE ELASTIC BODY TO DECLINE TO THE PUSHING OF THE FOOT ON HARD GROUND AND RESIST THE “GREEN” REACTION. PROTUBERANCES ARE PROJECTED UNDER THE OUTSOLE 1 UP TO THE LEVEL REACHED BY THE STUDS 3 IN THE RETRACTED POSITION. EACH RETRACTABLE CLAMP 3 INCLUDES A THREADED BASE 8 MOUNTED THROUGH THE OUTSOLE 1, FIXED TO THIS AND DELIMING A HOUSING 21 WHICH IS ACCESSIBLE AT LEAST ONE ELASTIC BODY 26, THE THREADED BASE COOPERATING WITH A THREADED PLUG 13 PRESENTING A SCREWING RING 14 CONSTITUTING A GUIDE 16 IN TRANSLATION FOR THE CRAMPON PROPERLY SAID 18 WHICH IS EQUIPPED WITH A protruding FOOT 20 LOCATED IN THE HOUSING.

Description

Sports shoe with retractable spikes.

  The present invention relates to a shoe of

  sport with crampons and in particular a golf shoe.

  The known golf shoes have studs protruding under the outsole and intended to penetrate the "green" of the golf course to allow the player to stabilize his support on the ground so that the shot can be assured with extreme accuracy , knowing that in the fixed position and during the throw, the player's feet cling to the ground from the inside to the outside for one and vice versa for the other and must not slip. It is therefore necessary that the crampons are firmly fixed to the shoe and have the power of

  penetration best suited to the "green".

  As long as the player runs on the "green" and the "rough", the shoes appear comfortable and walking is easy. On the other hand, when it takes courses on harder soils, such as alleys, car parks, meeting rooms ..., the walk is relatively painful and clumsy, the crampons wear out abnormally and the coating of these Soils lose very quickly their appearance of freshness and deteriorate very

quick.

  The present invention aims to remedy these drawbacks without the player having to remove the shoes or equip

  his special protection shoes.

  For this purpose and in accordance with the invention, the crampons are retractable against the action of at least one calibrated elastic member to yield to the push of the foot on hard ground and resist the reaction of a relatively soft ground such as the

"green" of a golf course.

  Preferably, in the zones where the retractable spikes are arranged, protuberances, such as minibramps, webs or the like, are formed protruding under the outsole until at least the level reached by them.

  crampons in fully retracted position.

  According to a particularly advantageous embodiment, each retractable crampon comprises a threaded base mounted through the outsole, fixed thereto and delimiting a housing through which at least one resilient member intervenes, the threaded base cooperating with a plug. threaded having a screw collar accessible from the outside and constituting a guide in translation for the crampon proper which is provided, opposite its head, a protruding foot located in the aforementioned housing and bearing on the or organs

elastics considered.

  According to a first embodiment, the tapped base is blind for the housing to be closed and contains the elastic member or members, each elastic member being an elastomer piece which may be indifferently a piece of revolution having a cruciform section, a ball, a preferably cylindrical pellet, a cylindrical tube, frustoconical, in diabolo centered on the crampon, and / or a spring which can be indifferently a frustoconical helical wire, a washer

  frustoconical, a star-shaped washer ...

  According to a second embodiment, the threaded base is open to open opposite a foam midsole forming the aforementioned elastic member; the elastic foam of the midsole can form a penetrating nib in the housing, an axially movable plate being preferably interposed between the nipple and the foot of the crampon for

  divide the pressure applied by it.

  Thus, as the player moves on the golf course, the crampons are completely protruding and cling perfectly to the ground. On the other hand, when the player moves on a hard ground, the crampons retract and the shoes carry on the ground by the protuberances of the soles, by not risking

  when not damaging the crampons and the floor covering.

  Various other features and benefits of

  the invention emerges from the detailed description which

  follows. An embodiment of the subject of the invention and the embodiments are shown as non-exemplary embodiments.

restrictive, in the attached drawing.

  In this drawing: - Figure 1 is a plan view showing from below an embodiment of the sole of a golf shoe according to the invention - Figure 2 is a side elevation taken along the line II-II FIG. 3 is a section taken on a larger scale along the line III-III of FIG. 1 and illustrating a first embodiment of a retractable spike, FIGS. 4 to 7 are views. FIG. 8 is a section similar to that of FIG. 3, illustrating a second embodiment of the retractable crampon; FIGS. 9 and 10 are views similar to FIG.

  Figure 8 showing variants.

  As is evident from FIGS. 1 and 2, the outsole 1 of the golf shoe is equipped, around the perimeter of the forefoot 2, with five retractable cleats 3 and, around the perimeter of the heel 4 of four 3. This sole projecting between the studs 3 of the forefoot, protuberances 5 and between the studs 3 of the heel, protuberances 6. In the example shown, the protuberances 5 are frustoconical minicrampons and the protuberances 6, pyramidal bars relatively elongated. Furthermore, in the central part of the forefoot 2 delimited by the crampons 3 and protuberances 5, is protruded an extended protrusion 7

  which, in the example shown, is a wavy range.

  The height of the protuberances 5, 6 and 7 corresponds to at least that of the crampons 3 when they are completely retracted; in addition, the number, shape and distribution of said protuberances are determined so that the shoes are suitable for

  walking on relatively hard varied terrain, crampons

  are at the same level as the protuberances, and support

  normally the wear that can result.

  FIG. 3 illustrates a first embodiment

  particular of one of these retractable crampons 3.

  This crampon comprises a base 8 having a tubular threaded skirt 9 integral with a bottom 10 which extends towards the periphery by a bearing and anchoring element 11 located on the side of the inner face of the sole 1. In the As shown, this element is an annular ring provided with claws 12 intended to penetrate into the outsole 1; but it is obvious that the element 11 can be constituted differently, in particular by a cross or other way

  that its maintenance can be obtained by overmolding.

  The crampon 3 also comprises a threaded plug 13 capable of cooperating with the threaded skirt 9 of the base 8, this plug having a protruding screwing flange 14 provided with holes 15 for gripping a claw key. When the plug 13 is screwed by means thereof into the base 8, the flange 14 is applied against the outer surface of the sole 1, while the anchoring element 11 is located against the surface

  inside or in the mass of said sole.

  The plug 13 delimits a bore 16 for precise guidance in translation of a cylindrical body 17 of the crampon itself 18. This body 17 projects from the plug so that its frustoconical terminal head 19 can be pricked in the ground. In contrast to its head, the body 17 has a protruding foot 20 located in a housing 21 defined in the base 8 between its bottom and the opposite end 22 of the plug 13. In the example illustrated in Figure 3, the foot 20 is a tip having a bearing shoulder 23 abutting, when the crampon 18 is a

  completely protruding position against the end 22 of the cap.

  To improve the positioning of the crampon 18 and its holding in the projecting position, it may be advantageous, as is apparent from Figure 4, that the foot 20 of this crampon has a frustoconical bearing surface 24 intended to bear against a

  conical frustoconical seat 25 of the cap 13.

  The housing 21 contains an elastic member

  independent designated by the general reference 26 (Figures 3 to 7).

  The elastic members of the retractable cleats of one and the same shoe are calibrated: to yield to the push of the foot on hard ground, the sole 1 then bearing on the ground by its protuberances 5 to 7 and its retracted crampons, and to resist the reaction of a relatively soft ground such as the "green", the crampons remaining in

  protruding to penetrate and hang in this soil.

  As is apparent from FIGS. 3 to 6, the elastic member 26 is made of an elastomer material (rubber, polyurethane, ethylene vinyl acetate, etc.) of suitable density,

  material that according to the shape to be obtained is molded, cut or otherwise.

  FIG. 3 shows that the elastic member 26 is a part of revolution 27 having a cruciform section so that it bears against the bottom 10 and the foot 20 by means of surfaces

  annular terminating flattening suction cups.

  Figure 4 shows that this member is a cylindrical tube 28 or frustoconical 29 may or may not be filled with foam. FIG. 5 shows that said member is a diabolo-shaped tube which can also be filled with foam, the annular section of this diabolo being preferably increasing

  from the middle narrowed towards the enlarged ends.

  FIG. 6 shows that the elastic member is a

  ball 31 or a cylindrical pellet 32.

  An example of sizing is given below. The housing 21 measures, when the stud 18 protrudes, a height of 4 mm for a diameter of 8 mm, the stroke of the crampon is 3 mm and the height of the housing when the crampon is retracted is lmm. In this case, the ball 31 (Figure 6) must have a diameter of 4.6 mm; the cylindrical tube 28 (FIG. 4) must have an outside diameter of 6 mm, an internal diameter of 4.7 mm and a height of 4.5 mm. These digital data show that after mounting the retractable clamp 3 on a sole 1, the ball 31 and the cylindrical tube 38 are prestressed, which allows them to maintain the spike 18 itself in

  protruding position to the outside.

  As is apparent from Figure 7, the resilient member 26 is a spring preferably metal. It consists of a stack of frustoconical washers 33 known as "Belleville" washers; but it is obvious that the spring can be of another type and for example constituted by at least one star washer, at least one helical wire

frustoconical or other.

  Figures 8 and 9 illustrate a second embodiment of one of the retractable cleats 3 mounted in the

  sole 1, as shown in Figures 1 and 2.

  In this second embodiment, all the components of the crampon which have already been described in the first embodiment are designated by the same mark. Only the differences are explained in the following. The skirt 9 of the base 8 has no bottom 10, but opens out through an opening 34 above the outsole 1. Indeed, this sole 1 is connected via a midsole 35 in foam to the first mounting sole 36 and it is the foam of said midsole 35 which must constitute an elastic member 37

  intervening on the foot 20 of the crampon 18 itself.

  If the thickness of the midsole 35 is sufficient and if facing the retractable clamp 3 the stiffness of this foam is appropriate to the necessary retraction force, the foot 20 of the crampon 18 may be located substantially in the same plane as the protruding element 11 of the base 8. This arrangement is shown in phantom in Figure 8; it makes it possible to increase the guiding length of the crampon 18 in the plug 13. However, it may be advantageous to increase the acting thickness of the midsole 35 and / or the useful retraction stroke of the crampon 18. In this case, as is apparent from the solid line representation in FIG. 8, the midsole 35 has a protruding stud 38 coming from a lower projecting mold to penetrate into the housing 21 of the base 8, this stud constituting up to the first of assembly 36 the organ

elastic 37 supra.

  In addition, if the stiffness of the midsole, whether or not it is provided with nipples 37, is insufficient to maintain the studs 18 in the "green", it may be advantageous to divide the pressure applied to the midsole. foam by the foot 20 of each spike 18, in other words to multiply the restoring force applied by said foam on said foot. For this purpose, and as is apparent from Figure 9, a plate 39, axially movable in the housing 21 of the base 8, is interposed between the aforementioned foot 20 and the foam of the midsole 35 or corresponding nipple 37 this foam forming the aforementioned elastic member 37; the surface of this plate is

greater than that of the foot 20.

  FIG. 10 illustrates a third embodiment of one of the retractable cleats 3 mounted in the sole 1, such as

  as shown in Figures 1 and 2.

  The retractable crampon 3 of this third embodiment is similar to that of the second shown in FIG. 9 and therefore its constituent members are designated by

the same references.

  The only difference lies in the constitution of the elastic member 40 which acts on the crampon 18. In fact, according to this third embodiment, the elastic member 40 is the combination of the elastic members 26 and 37. The plate 39 separates then the foam of the midsole 35 (or a pin 38), the stack of washers "Belleville" 33 (or any of the other elastic members 27, 28, 29, 30, 31, 32)

  disposed in the housing 21 against the foot 20 of the crampon 18.

  Whichever mode of execution chosen, the mounting of the retractable spikes 3 is very easy and adapts to all modes of manufacture currently in practice. A few

  examples are given in the following.

  According to a first example, during the molding of the outsole 1, positioning holes retractable crampons are households. The shoe is mounted by fixing the rod on the first and this set on the outsole 1. The thus constituted assembly is counterpicked to unclog the aforementioned holes inside the shoe. Then the bases 8 are nested internally in the holes of the sole assembly and the elastic members 26 are deposited in the housings 21 of these bases, while the plugs 13 equipped with studs 18 are screwed from the outside of the sole plate. 1 wear in said bases, and then blocked by means of a claw key to compress

said elastic members.

  In a second example, the outsole 1, resulting from molding, is equipped with retractable crampons while at another position, the rod is mounted on the first. Then simply solder the outsole equipped with crampons under the assembly consisting of the rod and the first. Of course, the anchoring elements 11 can take place in countersinks of the outsole so that they are flush with the inner surface of

  this one and do not form extra thicknesses under the first one.

  According to a third example derived from the second, the bases 8 of the crampons are placed in a mold and the constituent material of the sole 1 is injected into it, which has the effect of overmolding said bases. The sole

  thus obtained is then welded as in the previous example.

  But it may be advantageous for the overmoulding injection to be carried out directly on the rod. In this third example, the shape of the element 11 of the bases may be different to promote anchoring; thus, the element 11 can be shaped as a Maltese cross. For the same purpose and as is apparent from Figure 9, the base may have the shape of a coil whose skirt 9 is a body, not only with an upper element 11, but also with a lower element 41, elements that , instead of

  to be circular, can be polygonal.

  According to a fourth example, the sole 1 is manufactured, as in the second and third examples, to be one with the threaded bases 8. This sole is then welded to the rod by the techniques of setting up a micro-cellular material. . Therefore, the rod and its first are connected to the outsole 1 via a midsole

  foam 35, constituting the elastic members.

R EV ENDI C A T I O NS

  1.- Sports shoe with cleats and in particular a golf shoe, characterized in that the cleats (3) are retractable against the action of at least one resilient member (26, 37, 40) calibrated to yield to the thrust of the foot on hard ground and resist the reaction of a relatively soft ground such as the "green"

a golf course.

  2. Shoe according to claim 1, characterized in that, in the zones (2, 4) where the retractable spikes (3) are arranged, protuberances, such as minibramps (5), bars (6, 7). or others, are formed protruding under the outsole (1) until at least the level reached by the

  cleats (3) in fully retracted position.

  3. Shoe according to claim 1 or 2, characterized in that each retractable crampon (3) comprises a threaded base (8) mounted through the outsole (1), fixed thereto and defining a housing (21) through which at least one elastic member (26) intervenes, the threaded base cooperating with a threaded plug (13) having a screw collar (14) accessible from the outside and constituting a guide (16) in translation for the crampon itself (18) which is provided, opposite its head (19), a projecting foot (20) located in the aforementioned housing and bearing on the elastic member (s)

(26, 37, 40) considered.

  4. Shoe according to claim 3, characterized in that the threaded base (8) is blind for the housing (21) is closed (10) and contains the elastic member (s) (26), each elastic member being a elastomer piece which can be indifferently a part of revolution (27) having a cross section, a ball, a preferably cylindrical pellet, a cylindrical tube (28), frustoconical (29), diabolo (30) centered on the crampon. .. and / or a spring (33) which can be indifferently a frustoconical helicoidal wire, a washer

  frustoconical (33), a star-shaped washer ...

  5. Shoe according to claim 3, characterized in that tlemba threaded (8) is open (34) to open facing a midsole (35) foam

  forming the elastic member (37) above.

  6. Shoe according to claim 3, characterized in that the elastic foam of the midsole (35) forms a stud (38) penetrating into the housing (21), an axially movable plate (39) being preferably interposed between the nipple (38) and foot (20) of the crampon (18)

  to divide the pressure applied by it.

  7. Shoe according to claim 3, characterized in that the foot (20) of each crampon (18) is a

  shoulder end (23) bearing against the stopper.

  8. Shoe according to claim 3, characterized in that the foot (20) of each crampon (18) is a tip with a frustoconical bearing surface (24) against a seat

(25) complementary to the plug.

  9. Shoe according to claim 3, characterized in that the base has, in particular when it is intended to be mounted by interlocking, a tubular skirt (9), having projecting from the inner side of the outsole. , a support and anchoring element (11), such as a crown with

claws, a brace ...

  10. Shoe according to claim 3, characterized in that the base (8) has, particularly when it is intended to be laid by overmoulding, the shape

a coil (9, 11, 41).