EP0878219A1 - Rollerskates with removable shoe - Google Patents

Abstract

The roller skate comprises a chassis (2) with rollers (3) and a removable boot fixed to the chassis at four non-aligned points. Locking of the boot to the chassis is automatically ensured by deformation of a spring during booting up, The automatic locking comprises a fastening and locking part (8) subject to the action of a locking spring (16). The skate has an unlocking lever (19) articulated in the chassis rear which acts on the fastening part against the action of the locking spring.

Description

The present invention relates to a roller skate comprising a chassis fitted with castors and a shoe removably attached to the chassis in four non-aligned points, by hooking and locking so as to ensure a stable connection between the shoe and the chassis, locking ensured automatically by deformation of an organ elastic when fitting the wheeled chassis.

Removable attachment of a shoe to an ice skate or on wheels goes back to the origin of skating. The fixing was generally done by claws actuated by a lever and enclosing the sole of the shoe. Such attachments are described in the patents CH 118 742 and US 1 402 010.

In a more modern version, described in the patent US 3,918,729, the sole of the shoe is provided a metal plate with two front panels holes in the shape of keyholes coming to hang on two skid tenons and, at the back, a hole bayonet in which an organ engages rotary with one actuating arm and two horizontal bars coming to rest on two ramps so as to press the heel of the shoe against the metal plate of the skate. This skate has no locking means, the fixing being maintained by friction.

From US patent 5,507,506, we know a roller skate with removable shoe in which the shoe is provided front and rear slides, these slides coming to engage on chassis rails. A automatic locking is ensured by a leaf spring bent on which the heel of the shoe just hang on. Such an execution presents however several drawbacks: it is not easy to engage the shoe slides on the rails, all the more that no game can be tolerated, which requires manufacturing accuracy or commitment to unacceptable strength or deformation elastic detrimental to the stability of the shoe. The absence of longitudinal play at the locking level is also difficult to master. The release of the shoe is awkward.

From patent application FR 2 720 286, we know in in addition to a removable shoe roller skate in which the shoe is fixed by hooking at the front, while at the back, the shoe is provided with a toggle device by which it can be hung at the back of the chassis to press the heel of the shoe against the chassis.

The object of the invention is to provide a fixing automatic simple, robust, very stable, free of playable and easy to open to release the shoe.

The roller skate according to the invention is characterized in that hooking and automatic locking are provided by at least one hooking element and lock subject to the action of at least one means elastic return in the locked position and in this that the skate includes an unlocking means consisting of a release lever articulated at the back of the chassis and acting on the element hooking and locking against the action of the elastic means so as to release the shoe.

According to certain embodiments, the attachment and the locking takes place simultaneously with the four hooking points by a hooking element and locking common to the four points.

The unlocking lever preferably acts directly on the attachment element and locking.

The unlocking lever is preferably articulated at the rear of the chassis around a horizontal axis transverse to the chassis. According to an embodiment, when the shoe is separated from the chassis, the lever is held in a substantially vertical position by the hooking and locking element, such so it can be used as a handle when fitting the wheels.

Advantageously, the chassis has, at the four points hooking, V-shaped notches in which engage horizontal bars or studs of the shoe.

According to one embodiment, the attachment element and locking, common to the four attachment points, has beaks coming to engage on the bars or hold by inclined sides so as to press them at the bottom of the V-shaped notches. These inclined sides have additionally to make up for backlash due to wear notches and / or bars or tenons.

Different wear on both sides of the chassis may to be caught up with the achievement of the element hooking and locking in the form of two cut parallel plates connected together by a spacer with a clearance allowing displacement longitudinal of one plate relative to the other.

Automatic snapping can be done simply tilting the upper sides inclined hooking spouts so that the beaks move apart under the pressure of the bars or let's hold on.

This mode of execution requires relatively pressing strongly the foot on the chassis for the footwear, to overcome the force of the return spring. According to a other mode of execution, this pressure can be greatly reduced by using a retaining trigger the latching and locking element in position unlocked, this trigger being positioned relatively to the level of the bottom of the V-notches of the chassis so as to be actuated by tenons or bars of the shoe when putting on. This trigger can be achieved in different ways.

Advantageously, a single spring ensures the times the trigger and element recall hooking and locking.

The release lever can also be used as a handle for handling the chassis during footwear and as an auxiliary means of lateral support the shoe, in particular a collar fitted the shoe.

The accompanying drawing shows, by way of example, some embodiments of the invention, as well as variants of it.

Figure 1 is an axial sectional view, along a plane vertical symmetry of the chassis, of a roller skate online equipped with his shoe, according to a first mode of execution.

Figure 2 is a partial sectional view along II-II chassis and sole of the shoe.

Figure 3 is a view similar to Figure 1, but without the shoe.

Figure 4 is a partial view, in section analogous to FIG. 2, of a first variant of execution of the first mode of execution.

Figure 5 is a perspective view of a variant execution of the attachment element and locking.

Figure 6 is a sectional view of a first variant of the attachment bar.

Figure 7 is a sectional view of a second variant hooking studs.

Figure 8 shows, in axial section, a second mode of execution, trigger, in position unlocked, in a first fitting position.

Figure 9 shows the second embodiment in a position immediately preceding release of the trigger.

FIG. 10 represents the second embodiment in locked position.

Figure 11 shows, in axial section, a third execution mode, trigger, unlocked position, in a first fitting position.

Figure 12 shows the third embodiment in a position immediately preceding release of the hooking element.

Figure 13 shows the third embodiment in the locked position.

FIG. 14 is a partial view, in axial section, of a fourth embodiment, with trigger, in unlocked position, before putting on.

Figure 15 shows this fourth embodiment after hooking and locking the front of the shoe.

Figure 16 shows this fourth embodiment after hooking and locking the rear part.

The complete skate shown in Figure 1 includes a shoe 1 removably mounted on a chassis 2 fitted of four rollers in line 3.

The chassis 2 has two parallel plates 2a and 2b between which are mounted the rollers 3. These plates are braced. Such a chassis can be made, for example, by means of an extruded profile in aluminum. The upper edges of the plates 2a and 2b have four V-shaped notches 4, 5, 6, 7 arranged in pairs opposite one another, as shown in Figure 2. The notch 7 is located in the alignment of the notch 5 in figure 2. The chassis further includes a hooking and lock 8 articulated at an intermediate point in the chassis 2 around an axis 9 transverse to the chassis, and mounted with play, i.e. perpendicular to plates 2a and 2b. In the example shown, the element hooking and locking 8, which we will call thereafter the lock for simplification, consists of two parallel metal plates cutouts 8a and 8b connected by a spacer 10 of so as to present a substantially overall width equal to the space separating plates 2a and 2b from frame. This distance is preferably about 30 mm. The connection between the spacer 10 and the plate 8a and 8b presents a clearance, so that the plates can move slightly longitudinally one compared to each other.

The lock 8 has, at the front, a pair of nozzles 12 and, in its rear part, a pair of spouts 11 for hooking and locking the shoe as this will be described later. Each of these mouthpieces has a relatively steep upper side 13 towards the back of the skate (about 45 °) and one side lower 14 slightly tilted towards the front skating.

The axis 9 passes through the latch 8 through a slot 15, more precisely two aligned, oriented lights longitudinally and allowing the latch 8 to be move longitudinally relative to the chassis 2. The pin 9 is connected to the spacer 10 by a spring traction 16 pulling the lock 8 towards the rear of the skate. Between the light 15 and the rear spouts 11, the latch 8 presents a second set of lights 17 crossed, with a large clearance, by a pin 18 fixed transversely in the chassis 2. This axis 18 and the light 17 guide the lock 8, but with sufficient vertical clearance so as not to interfere with fixing shoe, as will be described later, as well as to allow catching up of the game from to wear.

The chassis 2 is further provided, at the rear, with a release lever 19 articulated on the chassis about a horizontal axis 20 oriented transversely to the chassis. Axis 20 is surrounded by a horn spring flush 21 urging the lever 19 to rotate in the clockwise, i.e. towards the front of the skate. By its lower lever arm 19a, the unlocking lever 19 pushes the lock 8 towards the front of the skate when the lever 19 is tilted rearward.

Shoe 1 is provided with a flexible sole 22 in synthetic material for easy walking. This sole 22 has a central recess 23 extending over the entire length of chassis 2 and the bottom of which is of width at least equal to the overall width of the chassis 2. The sole 22 is molded on two inserts, such as the insert 29 visible in FIG. 2, in hard and resistant plastic. In these inserts two U-shaped metal arches 24 and 25 are anchored, the horizontal part 24a, respectively 25a, constitutes a fixing bar to the chassis. The lower edges of the inserts 29 and the bars are set back from the bottom surface of the sole 22 so as not to come into contact with the ground when walking. Inserts 29 are located at the fixing points. So they don't reduce practically no flexibility of the sole when market. The distance between the inserts 29 is, from preferably greater than 8 cm so as to ensure good fixation stability.

For storing and transporting the chassis without the shoe, lever 19 is advantageously folded over the chassis. The lever 19 is raised, for putting on, in the position shown in Figure 3. The lock 8, pulled by its spring 16, is then in abutment against the axis 9. The lever 19, biased by its spring 21, is in abutment against the rear end of the latch 8.and it is advantageously used as a handle to hold skate. To put on the skate, just put the foot on chassis 2, so that the bars 24a and 25a can engage in the notches 4 to 7. The bars 24a and 25a come to bear on the inclined sides 13 of the spouts 11 and 12 of the lock. Support of the shoe on the chassis has the effect of spreading the nozzles 11 and 12, so that the bars 24a and 25a can penetrate to the bottom of the V-shaped notches of the frame. The lock 8 is then returned to the position shown in Figure 1 by its spring 16. The spouts 11 and 12 thus lock the bars at the bottom of the notches. Manufacturing tolerances, as well that the clearances due to the wear of the spouts and bars are caught by the tilt of the lower sides 14 beaks. In case the wear is different on each of the bars, the central articulation of the lock 8 allows the lock 7 to compensate, by tilting, this difference in catching up of games and / or by the relative displacement of a plate 8a, 8b relative to the other.

In the carriageway position shown in Figure 1, we note that there is a clearance e between the lever unlock 19 and latch 8. This game is intended for allow the lever 19, which bears against a collar 26 of the shoe articulated around an axis 27, of well-known way of following the movement of pivoting of the collar 26 around the axis 27. The lever 29 is more precisely supported at the bottom of a housing 28 provided in the back of the collar 26, the walls side of this housing abutting against the lever 19 during lateral bending of the collar 26, such so that the lever 19 contributes to the lateral holding of the shoe. A clearance is provided between the end top of lever 19 and top of housing 28 for provide the necessary freedom of movement.

The lock 8 could, of course, be constituted a solid monobloc piece, made of metal or material synthetic injected. The attachment of the bars 24a and 25a of the shoe can be done at four points, as in the example shown, the points being in reality of short section of the bars, or on any the length of the part of the bars located at inside the chassis. In all cases, the connection between shoe and chassis has the shape of a quadrilateral ensuring good lateral stability of the shoe on the chassis.

The positioning and lateral support of the shoe on the chassis is provided by the profile trapezoidal inserts 29 whose oblique sides come to rest on the chamfered edges 30 of the chassis 2.

The construction described above is likely to many other variations included as part of the invention. Some of these variants will be described below.

In the variant shown in Figure 4, the plates parallels 8a and 8b constituting the lock are located outside the chassis, against the outside faces walls 2a and 2b of the chassis. As in the first embodiment, plates 2a and 2b are connected by a spacer 10 which this time crosses the walls 2a and 2b of the chassis through two lights allowing the moving the lock. The plates 8a and 8b are in further guided by shoulders 31 extending over a at least part of the length of the chassis.

The fastening pieces integral with the shoe are made of metal parts in the shape of C 32 embedded in the inserts 29. The two ends of the piece 32 form two studs 33, 34 which engage in notches 4 to 7 on the chassis and in the lock. These let's stick 33 and 34 do not or very little protrude to inside the chassis, so that a space is found free for casters or for housing a brake.

The guidance of the plates 8a and 8b of the lock could also be insured, on the one hand, from below, by spans formed on the chassis, and, on the other hand, by a single pair of projections or studs integral with the chassis and cooperating with lock lights.

Figure 5 shows an execution of the lock in one single part 35. This part is, for example, formed by cutting and folding a metal sheet, so as to form two parallel side walls 35a and 35b corresponding to plates 8a and 8b of the first embodiment, these plates 35a and 35b being connected by a bridge 35c in their middle part, the lock 35 resting on the chassis by this bridge 35c, preferably slightly domed towards the chassis and around a axis transverse to the chassis, so as to constitute a tilting surface on the chassis for the catching up of differential clearances. In his part median, part 35 therefore has a U-shaped section overturned by which the bolt straddles the frame.

A bar or fixing pins could be obtained by pieces of different shapes. In the example shown in Figure 6, the bar 36a is consisting of the lower bar of an I-piece 36 embedded in insert 29.

In the variant shown in Figure 7, tenons 37a and 37b are formed by the ends of a hard plastic part 37 embedded by overmolding in the sole 22. In this case, insert and bar are confused.

A second embodiment will now be described in relationship to Figures 8 to 10.

In order to avoid a multiplication of the numbers of references, chassis 2 and unlocking lever 19 have been identified by the same reference numbers that in the first mode of execution despite the differences in form that can be seen. Likewise for V notches 4 and 6.

This embodiment also includes an element hooking and locking common to all four attachment points. This hooking element is consisting of two parallel bars 40 which will be the continuation designated by the term lock to simplify. This lock 40 is mounted to slide longitudinally in chassis 2, in which it is guided between, on the one hand, two spacers 41 and 42 of the chassis and, on the other hand, three sleepers 43, 44, 49 of the same frame. The lock 40 is provided with two hooks 45 and 46 intended to retain and lock the studs 24a and 25a of the shoe. The rear end of the latch 40 is articulated to the unlocking lever 19 around an axis 47 crossing the chassis 2 through a pair of longitudinal lights such as the light 48 allowing axis 47 to move longitudinally on the chassis. At one point intermediate of the latch 40 is articulated around a axis 50, a trigger 51 provided at its end with a hook 52 by which it hangs on the crosspiece 43. The trigger 51 is provided with a stud 53 located just above axis 50. At this stud is hooked on the end of a spring 54 working in traction, the other end of which is attached to the chassis at point 55. Given the short distance between the axis 50 and the attachment point 53 of the spring on the trigger, the spring 54 exerts on the trigger 51 a relatively low torque but quite sufficient to keep the trigger in the hooked position on the cross 43. This same spring 54 tends to pull the latch 40 forwards with great force. This lock is however retained by the trigger 51 itself retained by the crosspiece 43. When putting on the shoe, the front tenons 25a, 25b of the shoe are first engaged in the notches before 6 and 7 of the chassis in accordance with normal foot position during the fitting operation. Thereafter and for simplify the description, we will only talk about tenons and notches in V visible on the drawing. This position is shown in Figure 8.

The heel of the shoe is then lowered so that so that its rear pin 24a engages in the notch 4. Since the trigger 51 crosses the profile of notch 4, as can be seen on the Figure 8, the pin 24a meets the trigger and the pushes back down, as shown in figure 9. When the pin 24a meets the bottom of the notch 4, the trigger hook 52 is released from the cross member 43. The spring 54 can then pull the lock 40 towards the front so that the lugs 45 and 46 of the latch lock the pins 24a and 25a as shown in Figure 10. During this movement, the lever 19 is driven by its axis 47 in the light 48, but before reaching the end of the road in this light, the lower end 19a of the lever unlocking 19 comes into abutment against the cross-member 49, so that the lever 19 is pulled towards the front and that it comes to rest, with a certain pressure, against the back of the shoe. As in the first embodiment, lever 19 can engage in a housing on the back of the shoe.

To release the shoe, simply exert a pull back on lever 19, in the direction of the arrow, figure 10. The lever 19 rests on the crosses 49 and pulls back the latch 40 with its trigger 51 which again clings to 43 as shown in figure 8.

In the bare position (Figure 8), the lever 19 can be folded down on the chassis.

The third embodiment shown in Figures 11 at 13 does essentially differ from the second mode of execution than by the realization of the trigger. By therefore, in order to avoid repetition, the parties having the same function as in the second mode of execution have been designated by the same numbers of references despite possible small differences in form. This is in particular the case of latch 40. This latch 40 is guided in the same way as in the second embodiment and it is connected to lever 19 identically. Spring 54 is hooked directly to the lock 40 at a point 56. The trigger here consists of a ratchet 57 in piano wire embedded in the chassis at a point 58 and resting on a crossmember 59. In the unlocked position shown in Figure 11, this pawl 57 is bent elastically down and engaged in a notch 60 of latch 40, so that it retains this latch 40 which is pulled forward by the spring 54.

Figure 11 again shows the first phase of shoe in which the tenons before 25a, 25b of the shoe are engaged in the front V-shaped notches of the frame. When the rear pins engage in the notches 4 and 5 of the chassis, the pin 24a meets the pawl 57, as shown in figure 12. Arrived at bottom of the notch, the post 24a has grown back enough the pawl 57 so that it escapes from the notch 60 of lock 40. This lock 40 can then advance under the effect of the spring 54 ', as shown in the figure 13. For the rest, this mode of execution is analogous to second mode of execution. In particular, when the unlocking action on the lever 19, the pawl 57 slides on the lock 40 to come to commit to new in notch 60.

The notch 60 could be replaced by a simple shoulder against which the pawl would lean 57.

The third embodiment shown in Figures 14 to 16 differs from previous modes of execution by the presence of hooking and locking elements or separate locks for fixing the front studs and rear studs on the shoe.

As shown schematically in Figure 14, hooking and locking is ensured by two latches 61 and 62 working in opposite directions. These locks are made identically, so that we will just describe in detail the lock 61 while retaining that this lock may consist of a single piece or two identical pieces, one for each lug of the shoe, for example. Lock 61 is r-shaped articulated on the chassis around a axis 63 and the upper part of which forms a beak 64. This lock has a lateral stud 65 engaging in a notch 66 of a trigger 68 constituting a lever of the first kind presenting, in its point support, a cylindrical cutout 69 by which lever rests on a cylindrical boss 76 of the chassis 2 which serves as a pivot. Trigger 68 has a short lever arm 70 on which rests a spring 71 working in compression between the arm 70 and the latch 61 and now the trigger 68 in support against the pad 65. Thus, when the pad 65 of the lock is engaged in the notch 66 of the trigger, the lock 61 is retained against the action of the spring 71.

When putting on, as before, these are the let us hold 25a, 25b which engage first of all in the notches 6 and 7. The pin 25a meets the trigger 72 of lock 62 and releases this lock when it reaches the bottom of the notch 6, as shown in FIG. 15. The front of the shoe is thus hooked and Locked. Then there are the rear pins 24a, 24b which engage in the rear notches of the chassis and who come, in the same way, to hang on and lock by a lock 61. In this position, the studs can spread the triggers of studs 65, contrary to what is represented in the drawing.

Unlocking is ensured by lever 19 by via a cable 73, one end of which is fixed in 74 to the rear lock 61, which passes over a pulley 75 of the front lock 62 to return in direction lever 19 to which it is fixed by its other end.

Claims (28)

Roller skate comprising a chassis (2) equipped casters (3) and a shoe (1) attached removable from the chassis at four non-aligned points defining a quadrilateral, by snapping and locking so as to ensure a stable connection between the shoe and the chassis, the lock being ensured automatically by the deformation of an organ elastic when fitting the wheeled chassis, characterized in that the hooking and locking automatic are ensured at all points fixing by at least one hooking element and lock (8; 35; 40; 61, 62) subject to the action of less an elastic means (16; 54; 71) for holding in locked position and in that the skate includes a unlocking means consisting of a lever release (19) articulated at the rear of the chassis and acting on the hooking and locking element against the action of said elastic means so as to release the shoe. Skate according to claim 1, characterized in that the release lever (19) acts directly on the hooking and locking element. Skate according to claim 1, characterized in that that the unlocking lever (19) is articulated the rear of the chassis around a horizontal axis (20; 47) transverse to the chassis. Skate according to one of claims 1 or 3, characterized in that the chassis has, at the points attachment, V-shaped notches (4 to 7) in which come to engage bars or tenons (24a, 25a; 33, 34; 36a; 37a, 37b) horizontal of the shoe and that the hooking and locking element has nozzles (11, 12; 45, 46; 64) which engage on the bars or tenons so as to maintain without play the bars or stick at the bottom of the V-shaped notches Skate according to claim 4, characterized in that that it includes a hooking element and locking (8; 35) common to the four points hook and a spring (16) holding this element hooking in the locked position, and in that said spouts (11, 12) have an upper side inclined (13) allowing their separation by the bars or tenons when putting on and one side lower inclined (14) coming to rest on the bars or tenons in the hooked position. Skate according to claims 2 and 5, characterized in that in the absence of a shoe, the lever unlocking (19) is held in one position substantially vertical by the attachment element and locking (8; 35). Skate according to claim 6, characterized in that that the common hooking and locking element (8) is articulated at an intermediate point around a horizontal axis (9) transverse to the chassis and through a light (15) of the hooking element and locking. Skate according to claim 7, characterized in that that when the shoe is attached to the chassis, a clearance (e) remains between the unlocking lever and the common hooking and locking element, so that the lever (19) can come to rest in permanently against the back of the shoe following the bending of the shoe backwards and forwards. Skate according to claim 4, characterized in that that the hooking and locking element (40; 61, 62) is retained in the unlocked position by a trigger (51; 57; 68, 72) positioned relative to the level of the bottom of said V-shaped notches (4, 6) so to be actuated by said pins or bars of the shoe when putting on, during penetration in the V-shaped notches Skate according to claim 9, characterized in that that the hooking and locking element (40; 61, 62) and the trigger (51; 68, 72) have a spring common reminder (54; 71). Skate according to claim 10, characterized in that that it includes a hooking element and locking (40) common to the four attachment points and slidably mounted longitudinally in the chassis, in that the trigger (51) consists of an arm articulated at an intermediate point (50) of the element hooking and locking and terminated by a hook (52) coming to hang on the chassis in unlocked position and in that the spring common reminder (54) is an attached tension spring by one of its ends to the chassis and by its other end at a point (53) of the trigger close to the joint (50) of the trigger so as to exert simultaneously pulling on the hooking element and locking and a couple on the trigger for its maintenance, respectively its recall in position hung. Skate according to claim 9, characterized in that that it includes a hooking element and locking (40) common to the four attachment points and slidably mounted longitudinally in the chassis, and in that the trigger (57) consists of a flexible member engaging in a notch (60) or behind an equivalent shoulder of the element hooking and locking so as to oppose to the action of the elastic means (54 '). Skate according to one of claims 11 or 12, characterized in that the unlocking lever (19) is articulated at one end of the hooking element and locking (40) by means of a pin (47) passing through at least one longitudinal lumen (48) of the chassis, the chassis having a stop (49) against which the lower end of the lever (19) comes lean when unlocking. Skate according to claim 9, characterized in that that it includes two hooking elements and independent locks (61, 62) each articulated around an axis located below said V-shaped notches and provided with a tenon (65), and two triggers (68, 72) retaining each of the hooking elements and locking, each of these triggers being constituted a lever of the first kind extending towards the lug (65) of the hooking and locking element and having a notch (66) in which said post is engaged in the unlocked position, and in this that said elastic means is a spring (71) working in compression between the fastening element and locking and a lever arm (70) of the trigger so as to simultaneously maintain the trigger resting against said post in the absence of shoe and push the hooking element and locking in locked position. Skate according to claim 14, characterized in that that the hooking and locking elements (61, 62) work in opposite directions and so divergent and that one carries a return (75) of a cable (73) one end of which is fixed to the other element the other end is connected to the lever unlocking (19). Skate according to one of Claims 1 to 15, characterized in that the back of the shoe has a housing (28) in which the terminal region of the unlocking lever (19) is engaged so as to contribute to the lateral holding of the shoe. Skate according to one of Claims 7 to 13, characterized in that the fastening element and lock (8) consists of two plates cut parallel lines (8a, 8b) which are connected between them by a spacer (10). Skate according to claim 17, characterized in that that the connection between the spacer (10) and said parallel plates has a clearance allowing a slight relative longitudinal displacement of a plate by compared to each other. Skate according to one of claims 17 or 18, characterized in that said plates (8a, 8b) are located inside the chassis. Skate according to one of claims 17 or 18, characterized in that said parallel plates (8a, 8b) are located outside the chassis, of each side of it. Skate according to one of Claims 7 to 13, characterized in that the fastening element and lock is in one piece (35) having a U-shaped section overturned in its middle region (35a) by which the hooking and locking element is straddling the chassis. Skate according to one of claims 1 to 21, characterized in that in the bare position of the chassis, the unlocking lever (19) is foldable on the frame. Skate according to one of claims 1 to 22, characterized in that the bars or tenons (24a, 25a,; 33, 34; 36a) are anchored in inserts in hard plastic (29) embedded in the flexible material (22) of the sole and having, opposite the chassis, a cutout (23) having two oblique side walls guiding the shoe during the fastening from this to the frame supported on the sides exterior (30) of the chassis to maintain and transverse positioning of the shoe on the frame. Skate according to one of claims 1 to 22, characterized in that the pins (37a, 37b) are formed by the ends of a plastic part hard (37) C-shaped embedded in the sole (22). Skate according to one of claims 1 to 24, characterized in that the distance measured transversely between the attachment points of each pair is approximately 30mm. Skate according to one of claims 1 to 25, characterized in that the distance measured longitudinally between the attachment points is greater than 8 cm. Skate according to one of Claims 1 to 26, characterized in that in the bare position of the chassis, the release lever (19) constitutes a handle for handling the chassis. Skate according to one of Claims 1 to 11, characterized in that the fastening element and locking (8; 35; 40) simultaneously ensures hooking and locking at all points fixation.

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