EP2090340A1 - In-line skate brake system - Google Patents

Abstract

The skate (1) has a pressing device e.g. rod (31), connected with an actuating device (28) and a releasing part (33). The releasing part consists of plates (39, 41) that are attached rotatably or longitudinal-adjustably with a fixed part (25) in a region of a rear end (45) of the plates and are moved with a movable part (27) to arrive from a locking position to an unlocking position under an effect of the device. The plates prevent a removal of the fixed and the movable parts from each other during interlocking and permit the approaching of the fixed and the movable parts during unlocking.

Description

The invention relates to a roller equipped with a braking system. It will find its application in an industrial environment, at the manufacturers of sports equipment, in particular the manufacturers of rollers, and will be marketed especially in the sales areas of sports equipment.

It is known in particular two types of rollers, namely in-line rollers consisting of three or four wheels arranged in line one behind the other, and rollers, more commonly called roller skate, type "quad" is that is to say consist of two transverse axes of rotation, one disposed upstream and the other downstream of the roller, each axis receiving at both ends a wheel. In addition, according to these two types of rollers, they comprise a frame consisting of a longitudinal plate on which are mounted in line the rolling systems that is to say the wheels or pairs of wheels arranged in line. In addition, the frame includes a foot locking device for securing it with the roller. This foot locking device may be, for example, consisting of a footwear element allowing either the reception of the foot or the blocking of a suitable shoe and worn at the foot of the user.

The person skilled in the field of the invention is aware of rollers equipped with a braking system. According to a first design mode such as that described in the document FR 2 753 106 , the roller includes a plate on which wheels are mounted in line; a braking system, comprising a braking element of the shoe type, or even roller, is arranged under the plate, above at least one of the wheels, in particular at the rear. In addition, an actuating device consists of a rod comprising at least two parts hinged together at the level of the malleoli, along a transverse axis of pivoting, the first part enveloping at least the heel of the foot and the second part enveloping the minus the lower portion of the calf, said second portion of the rod being pivotable relative to said first portion to activate the braking system for moving vertical brake pad to bring it into contact with the rear wheel or wheels of the roller and braking them. Such a braking system presents a risk for the user, especially when the latter does not control the braking, and in particular the movement of his leg actuating said second portion of the rod which acts on said braking system. The stability of the user is then not optimal, it can tilt forward; therefore, there is a risk of falling.

According to another embodiment of roller design equipped with a braking system, such as those described in the documents US 5,478,094 and US 5,192,099 , the roller comprises a plate on which are mounted in line the wheels rotating along transverse axes of rotation on the plate. In addition, this plate comprises a fixed part on which are mounted the three front wheels, and a movable rear portion on which is mounted the rear wheel. Furthermore, a braking system is constituted by a braking element of the pad type which is fixed to the rear end of the fixed part, the movable part is able to move relative to the fixed part, possibly by elastic deformation. of the plate or by pivoting of the mobile part relative to the fixed part, which allows the approximation of said movable part relative to said fixed part, allowing the rear wheel to come into contact with the pad, and thus to brake said rear wheel. Such a roller design can cause unwanted braking when the user involuntarily presses on the rear of the plate, or when the path on which the user patches is more or less deformed or bumpy tending to unintentionally bring the moving part of the fixed part.

According to another roller design mode equipped with a braking system, as described in the document FR 2,753,635 , the roller comprises a plate on which are mounted in line wheels rotating along transverse axes of rotation on the plate. This plate comprises a fixed part on which are mounted the three front wheels and a movable part on which is mounted the rear wheel. Furthermore, a braking system is constituted by a brake element of the pad type arranged at the rear end of the fixed part of the plate to make contact on the ground when the movable part pivots and approaches the fixed part. Furthermore, an actuating device is arranged on the roller chassis to be controlled with the leg of the user. In addition, a triggering device is constituted by a locking pin slidably mounted in a linear light on the movable part and in a square light on the fixed part. The actuating device makes it possible to move the locking pin when the two lights match. According to a position of the locking pin located at a first end, concomitantly in the two lights, the fixed portion and the movable portion are locked relative to each other. On the contrary, when the actuating device acts on the locking pin to slide it towards a second end, in the angle part of the first light, the movable part can then pivot with respect to the fixed part of the plate, the locking pin then sliding only up the angle light on the first fixed part while remaining blocked at the second end of the linear light on the movable part.

The object of the present invention implements a skate that overcomes the disadvantages of rollers having a design similar to that described in the documents US 5,478,094 and US 5,192,099 . In addition, the present invention also constitutes a design alternative to the roller described in FR 2,753,635 , especially with regard to the actuating device.

As such, the invention relates to a roller, also called roller skate, for self-regulating braking; when the skater moves forwards, the pressure exerted on his heel decreases, thereby reducing the braking efficiency and avoiding any imbalance towards the front.

The roller comprises a frame, at least two rolling systems each consisting of at least one wheel rotatably mounted on a transverse axis of rotation, and at least one braking element. The chassis comprises at least one longitudinal plate on which are mounted in line the rolling systems and a foot locking device for securing of it with the roller. The braking member is disposed above at least one of the rolling systems to engage and brake the same. Furthermore, the plate has two parts, one of which, said fixed, is secured to the locking device of the foot and receives the braking element, while the other part, said mobile, receives the rolling systems arranged under the braking element; when the moving part approaches the fixed part, the rolling system comes into contact with the braking element. The roller also comprises a device for actuating the braking element, said actuating device being arranged on the chassis to be controlled by the user, in particular with the foot or the leg, or even with the hand.

According to the invention, the roller comprises a trigger device consisting of a pusher, in particular consisting of a connecting rod, and a trigger piece. The rod is mounted in pivot connection, on the one hand, at one of its ends with the actuating device and, on the other hand, at the other of its ends with the trigger piece. In addition, the triggering part consists of at least one plate-shaped part, adjacent to the rolling system, said plate being rotatably mounted transversely or in longitudinal translation with the fixed part, in particular at its rear end, and in translation with the movable part, to move from a locking position to an unlocking position under the action of the actuating device, said plate blocking the spacing between said fixed and movable parts during locking and on the contrary allowing their approximation when unlocking.

Thus, the triggering device is able to be activated under the action of the actuating device to move from a blocking position of the plate during slippage, to a release position thereof during the braking allowing the approximation of the fixed part with the moving part to bring the rolling system into contact with the braking element. Such a design has the advantage of avoiding inadvertent and involuntary braking during the practice of skating. Moreover, the pressure exerted by the weight of the skater and his inertia on the back of the roller allow the bringing the moving part closer to the fixed part and thus bringing the bearing system into contact with the braking element. The pressure is therefore greater or less depending on the weight and inertia of the skater.

Preferably, the longitudinal plate is slotted over part of its length, in particular from its rear end, so as to constitute the fixed part and the movable part, and to allow the approximation of said movable part with the fixed part by elastic deformation. of said platen. Other embodiments are possible; one can for example provide a fixed part on the frame and a movable portion mounted in pivot connection at its end, with the front end of said fixed part.

According to a preferred mode of design, the braking element consists of a roller rotatably mounted along a transverse axis of rotation on the fixed part. In addition, the rolling system consists of a single wheel rotatably mounted on an axis of rotation; this wheel is adapted to come into contact with the roller when the moving part approaches the fixed part.

According to a variant of design, the braking element consists of two rollers rotatably mounted along a transverse axis of rotation, the rollers being arranged on the lateral sides of the fixed part. In addition, the rolling system consists of two wheels rotatably mounted on an axis of rotation, said wheels being disposed on the lateral sides of the movable part. These wheels are able to come into contact with the rollers when the moving part approaches the fixed part, that is to say when the trigger device is unlocked. According to this design, the roller is more commonly referred to as a roller skate or "quad" system.

According to a first embodiment, the actuating device consists of a rod which comprises at least two parts hinged together, particularly at the level of the malleoli, along a transverse axis of pivoting. The first part wraps at least the heel of the foot disposed inside a footwear element. In addition, the second part wraps at least the lower portion of the calf; the pivoting of the second part of the stem, by an action of the leg allowing the calf to bear on this second part, actuating the connecting rod.

According to a variant of design, the actuating device consists of a part arranged under the front end of a footwear element constituting the foot blocking device, this actuating piece being integral with the braking system; the deformation of the footwear element makes it possible to move the workpiece, and thus to actuate the connecting rod.

Other design variants of the pusher are conceivable; it can include an electronic or automatic push rod acting directly or in combination with a connecting rod on the trigger piece. In this case, the actuating device is for example constituted by a control unit actuated with the foot or the hand, and triggering the electronic or automatic pusher.

• les figures 1 et 2 représentent un premier mode de conception du roller présentant quatre roues disposées en ligne et montées en rotation suivant des axes de rotation transversaux, chaque roue montée en rotation suivant un axe de rotation transversal constituant un système de roulement. En outre, ces figures 1 et 2 présentent un premier mode de conception du dispositif de déclenchement ;
• la figure 3 représente une variante de conception du dispositif de déclenchement tel que représenté en figures 1 et 2 ;
• la figure 4 représente une variante de conception du roller sur laquelle les systèmes de roulement, disposés en ligne sur la platine, sont constitués d'un axe de rotation transversal et de deux roues disposées aux extrémités latérales dudit axe de rotation, ledit roller se dénommant alors de préférence patin à roulette ou « quad ».
• la figure 5 illustre un exemple de mise en oeuvre de l'élément de freinage, notamment agencé sur le roller illustré en figure 4.

Other features of the present invention will become apparent from the following description in support of figures in which:

• the Figures 1 and 2 represent a first mode of design of the roller having four wheels arranged in line and mounted in rotation along transverse axes of rotation, each wheel mounted in rotation along a transverse axis of rotation constituting a rolling system. In addition, these Figures 1 and 2 present a first mode of design of the triggering device;
• the figure 3 represents an alternative design of the triggering device as shown in FIG. Figures 1 and 2 ;
• the figure 4 represents a variant of the design of the roller on which the rolling systems, arranged in line on the plate, consist of a transverse axis of rotation and two wheels arranged at the lateral ends of said axis of rotation, said roller then denominating preferably roller skate or "quad".
• the figure 5 illustrates an example of implementation of the braking element, in particular arranged on the roller illustrated in figure 4 .

According to the different design modes of the present invention, as illustrated in the Figures 1 to 4 , the roller 1 is equipped with a frame 3 which comprises a longitudinal plate 11. This longitudinal plate 11 is composed of two parts 25, 27; the first part 25 is called "fixed" in the following description, while the second part 27 is called "mobile". However, said first portion 25 could be considered mobile and said second portion 27 could be fixed.

According to the design mode illustrated on the Figures 1 and 2 , the longitudinal plate 11 is split over part of its length, from its rear end 23. Such a slot on the plate 11 makes it possible to constitute the fixed part 25 and the mobile part 27. In addition, the material chosen for the production of the plate 11 in particular designed composite material, allows the elastic deformation of said plate 11 to allow the connection between the fixed portion 25 and the movable portion 27. This slot is preferably made horizontally on the plate.

Other variants are conceivable, as for example that illustrated in figure 4 where the plate 11 is constituted by a flexible part curved at its front end and constituting an elongated and lying U, part of which constitutes the movable part 27 and the other part constitutes the fixed part 25. It can also be provided, according to another Alternatively, a pivot connection between two parts, one of which constitutes the fixed part 25 and the other constitutes the movable part 27.

According to the various conceptions illustrated Figures 1 to 4 , the roller comprises at least two rolling systems. According to a first mode of conception illustrated on the Figures 1 to 2 four rolling systems are implemented. These bearing systems 5, 7, 8, 10 are each composed of a wheel 5a, 7a, 8a, 10a mounted in line one behind the other in the central part on the plate. These wheels 5a, 7a, 8a, 10a are mounted in rotation along transverse axes of rotation 51. According to this design illustrated in FIGS. Figures 1 to 2 , the plate 11, and in particular the mobile part 27, is arranged to allow the housing of the wheels 5a, 7a, 8a, 10a in the central part. In addition, the front wheel 10a is arranged at the front end of the fixed part 25 while the three rear wheels 5a, 7a, 8a are arranged on the movable part 27, which allows the approximation of these three wheels 5a, 7a 8a to said fixed portion 25.

According to an alternative design illustrated on the figure 4 , the roller comprises two rolling systems arranged at the front and rear ends on the plate 11. According to this design, the rolling systems 5, 7 are each constituted by two wheels 5c, 5d, 7d. According to this design, the first rolling system 5 is disposed at the rear end of the movable portion 27 and the second rolling system 7 is disposed at the front end of the movable portion 27; during the deformation of the plate 11, only the rear wheels 5c, 5d, are likely to approach the fixed part 25.

According to these various designs, the roller 1 comprises a braking system 9. This braking system 9 comprises at least one braking element 21. According to the first embodiment of the roller 1 shown in FIGS. Figures 1 to 3 , the braking element 21 consists of a single braking roller 21a and disposed above the two rear wheels 5a, 7a to come into contact with them when the moving part 27 approaches the fixed part 25. Regarding the second embodiment illustrated in figure 4 , the braking element 21 consists of two braking rollers 21c, 21d disposed on the lateral sides of the plate, on the fixed part 25, these rollers 21c, 21d being arranged above the rear wheels 5c, 5d, and even slightly offset from them, so that when the fixed portion 25 and the movable portion 27 come closer, the rear wheels 5c, 5d come into contact with the rollers 21c, 21d. According to these different modes of design illustrated in Figures 1 to 4 , it is noted that the roller is mounted in rotation along an axis of rotation 77 on the fixed part 25.

Furthermore, the roller 1 is equipped with a locking device for the foot 13. This locking device 13, according to the design modes illustrated in FIGS. Figures 1 to 3 , in particular comprises locking means for fixing a footwear element such as a shoe adapted to cooperate with said locking means. Such a design has the particular advantage of being able to replace the footwear when necessary while maintaining the roller 1. According to a variant of design, as illustrated on the figure 4 , the foot blocking device 13 can be implemented directly by means of a footwear element arranged on the upper part of the longitudinal plate 11, that is to say integral with the fixed part 25.

The roller 1 comprises a device for actuating the braking system. This actuating device 28 is preferably arranged on the frame 3 to be controlled with the foot or with the leg, so as to actuate the braking system. Different modes of design of the actuating device of the braking system are implemented on the Figures 1 to 4 .

According to a first embodiment illustrated on the Figures 1 to 3 , on which the roller 1 comprises four in-line wheels, the actuating device 28 consists of a rod including in particular two parts 15 and 17 hinged together, this articulation being constituted by means of a transverse pivot axis 19 arranged between the first lower part 15 and the second upper part 17, the connection being located in particular at the level of the malleoli. In addition, the first portion 15 is secured to the fixed portion 25 of the plate 11, the first portion 15 of the rod participating in the reception of the foot or the footwear element, in particular for blocking the heel of the foot. The second upper portion 17 is arranged to envelop at least the lower portion of the calf, and the lower portion of the tibia. Thus, by forward or backward movements of the leg, the tibia and the calf are able to bear on said upper part 17 of the rod and to pivot it forward or backward relative to the lower part 15, for the purpose of actuating the braking system connected with said second portion 17 of the rod.

According to a variant of design as illustrated on the figure 4 , the actuating device 28 of the braking system 9 is arranged under the front end of the footwear element 79, consisting of a shoe proper. This actuating device consists of an actuating part 83, preferably in the form of a plate cut to fit the front end of the sole. In addition, the shoe is integral with the plate 11 over its entire rear portion, preferably, while the front portion in which the piece 83 is located is free vis-à-vis the plate 11, which allows to deform the front part of the footwear element 79, and thus to move the actuating part 83, the latter being connected with the braking system so as to act on it during the deformation of the footwear element, and thus to allow braking of the roller.

As such, the braking system comprises a triggering device 29 adapted to be activated under the action of the actuating device 28 to pass from a locking position of the plate 11 during slippage, according to which the mobile part 27 is immobilized with respect to the fixed part 25 so as to prevent the bringing together of the two parts, and thus to prevent the wheels from coming into contact with the braking element 21, at a position of release of the plate 11, according to which the mobile part 27 is able to approach the fixed part 25, in particular when the user exerts pressure on the rear part of the plate in order to deform the plate and to allow the moving part 27 to approach the fixed part 25, in which the wheels come into contact with the braking element 21. In addition, the triggering device 29 inversely enables the passage from the unlocking position to the locking position, under the action of the actuating device 28, or even by means of a spring return system.

As illustrated on Figures 1 to 4 , the triggering device 29 consists of a pusher element, preferably consisting of a connecting rod 31, and a triggering piece 33. This connecting rod 31 is integral with the actuating device 28 and makes it possible to act by pushing or pulling on the trigger member 33 when the actuating device is actuated. For this, the connecting rod 31 is pivotally connected at its first end 35 to the actuating device 28, that is to say with the upper part 17 of the rod which comprises an assembly part 59 with the connecting rod. 31, as illustrated in Figures 1 to 3 , or with Exhibit 83 as shown on the figure 4 . In addition, this rod 31 is pivotally connected at its second end 37 to the trigger piece 33. When the actuating device 28 is constituted by the rod, as illustrated in FIG. Figures 1 to 3 the connecting rod 31 is disposed at the rear end of the roller 1. Furthermore, when the actuating device 28 is constituted by the part 83 arranged under the front end 81 of the footwear element 79, as illustrated in FIG. figure 4 this rod is disposed under the footwear element and extends through the plate 11 from front to rear. For this, the plate comprises a passage extending longitudinally, in particular in the central part thereof, so as to pass through the fixed portion 25 and possibly the movable portion 27, and thus allow the passage of the rod 31 to have its upper end 35 above the fixed part so as to connect it with the part 83 of the actuating device, and to have its lower end 37 at the rear end of the movable part 27 so as to connect it with the trigger piece 33.

In a preferential but nonlimiting manner, the connecting rod 31 comprises adjustment means 57 illustrated on the Figures 1 and 2 . These adjustment means are conceivable on the variants illustrated in FIGS. figures 3 and 4 . These adjustment means 57 allow in particular to adjust its length, that is to say the length separating the pivot axis arranged between the upper end 35 of this rod and the actuating device 28, and the axis pivoting arrangement arranged between the lower end 37 of said connecting rod and the trigger piece 33. Thus, it is possible to adjust the activation position of the trigger piece 33 when the actuating device is engaged. This allows in particular to take into account the morphology of the user who will tend to modify more or less the position of the actuating device 28 at rest, that is to say the initial position of the upper portion 17 of the rod or piece 83 under normal skating conditions. One can provide a telescopic adjustment of the connecting rod 31, changing the length of the connecting rod and therefore the length between the pivot axes. However, it is possible to envisage the implementation of adjustment means 57 on the assembly part 59, illustrated in FIGS. Figures 1 and 2 , or on the actuating part 83, illustrated in figure 4 , also allowing them to change the length between the pivot axes on the connecting rod 31.

As illustrated on Figures 1 to 4 , the triggering part 33 is articulated on the one hand with the fixed part 25 of the plate 11 and on the other hand with the mobile part 27. This triggering part is arranged to block the spacing between said fixed parts 25 and mobile 27 when locking or locking in order to prohibit the bringing together between these two parts 25, 27 and thus to prevent the wheels from coming into contact with the braking element 21. Conversely, in the unlocking or unlocking position , the triggering part 33 allows the unlocking between the fixed part and the movable part, in order to allow their bringing together and thus to put in contact the wheel or wheels of the roller with the braking element 21.

The triggering piece 33 is disposed at the rear end 45 of the fixed part 25 of the plate, as illustrated in FIG. Figures 1 to 4 . According to the invention, it consists of at least one plate 39 of greater or lesser thickness, pivotally mounted along a transverse axis 43 with the fixed portion 25. It is however possible to design a translation assembly according to a longitudinal axis between said fixed portion 25 and said trigger piece 33.

In addition, the plate 39 is mounted in circular translation with the movable portion 27 of the plate 11. For this, the plate 39 comprises a longitudinal recess 47, preferably of circular shape, and the movable portion 27 comprises at least one axial portion transversely arranged guide means 49, this axial portion 49 being positioned inside the longitudinal recess 47. Thus, when the plate 39 pivots at its transverse pivot axis 43, or translate with respect to the movable part 25, under the action of the rod 31 activated by the actuating device 28, the longitudinal recess 47 is able to translate with respect to said axial portion 49.

When the roller includes four wheels in line as illustrated on the Figures 1 to 3 , the trigger piece 33 preferably has the shape of a U, illustrated in FIG. figure 3 , whose two lateral sides 79a, 79b constitute two plates 39, 41 each provided with a circular longitudinal recess 47 as described above. Furthermore, these plates 39, 41 are arranged on the lateral sides of the movable portion 27 of the plate 11. In addition, the longitudinal recesses 47 of these plates 39, 41 each receive an axial guide portion 49 which, preferably and not limited to, is constituted by a portion of the axis of rotation 51 of one of the rolling systems, in particular by the ends of the axis of rotation 51 of the wheel 5a. These axial guide portions could however be independent of the axis of rotation 51, and, for example, implemented by means of inserts, such as pins, attached to the lateral sides of the movable part 27.

When the roller 1 has a design as illustrated in figure 4 , that is to say that it consists of two in-line rolling systems, each rolling system comprising two wheels 5c, 5d, 7d rotatably mounted along the axis 51, the wheels being arranged on the lateral sides of the movable part 27, the trigger piece 33 is, then, made of a single plate 39, of greater thickness, preferably of the order of 5 to 10 mm, arranged in central part at the rear end 45 of the stage, as illustrated in figure 4 . In this case, the axial guiding portion 49 is constituted by the central portion of the axis of rotation 51. Furthermore, it is possible to provide an intermediate piece 49a mounted on the portion of the axis of rotation 51, or on an axis independent of said axis of rotation, this intermediate part 49a, illustrated in FIG. figure 4 , being engaged in the recess 47 on the plate 39. Such an intermediate part 49a has the function of improving the sliding of the tripping piece 33; it may be constituted for example by a sliding ring mounted idle on the axis 51, or a bearing. Such an intermediate part 49a can also be envisaged for the embodiments illustrated in FIGS. Figures 1 to 3 in which case two intermediate pieces will be implemented on each lateral side of the roller, at the level of the longitudinal recesses 47 on the plates 49, 51.

The trigger piece 33 illustrated in FIGS. Figures 1 to 4 has a longitudinal recess 47 whose shape is scalable, that is to say that the radius separating the pivot axis 43 of said trigger piece 33 relative to the fixed portion 25, and the upper periphery 48 of the recess in which is housed the axial guide portion 49, is decreasing. This evolutionary shape of the recess 47 is preferably circular and arranged so that, in the normal slip position, the upper side 50 of the axial guide portion 49 is blocked by the upper periphery 48 of the recess 47 which is positioned on the side of its first end 53, as illustrated on the figure 2 . According to this position, the center distance between the pivot axis 43 and the axial portion 49, in contact on the upper periphery 48, is maximum e _M , this maximum center distance e _M corresponding to the open position of the wheels 5a 7a with respect to the braking roller 21a.

Conversely, when the roller is in the braking position, that is to say when the rod 31 is actuated by the actuating device 28, the trigger piece 33 pivots, the axial portion 49 then being positioned on the side of the second end 55 of the recess 47, as illustrated in FIG. figure 1 , the upper side 50 of said axial portion 49 then being preferably clear of the periphery 48 of the recess, or in contact therewith. However according to this position, the center distance is minimum e _m , this minimum distance e _m being obtained in particular when the user exerts pressure on the rear part of the plate with the foot so as to deform it at moving the moving part 27 closer to the fixed part 25 until the wheels 5a, 5b of the rolling systems 5,7 come into contact with the braking element 21a.

This mode of operation is equivalent for the roller 1 as illustrated in figure 4 with the difference that the triggering part 33 is composed of a single plate 39 whose operating characteristics are identical to those described above and illustrated in FIGS. Figures 1 to 3 , allowing either of the two rear wheels 5c, 5d of the system to come into contact with each other rear bearing 5 with the braking rollers 21c, 21d, either to maintain spaced the movable portion 27 of the fixed portion 25 to prevent the contact of said wheels 5c, 5d with said rollers 21c, 21d.

In addition, when the plate 39 is mounted in translation along a longitudinal axis vis-à-vis the fixed portion 25, the center distance is defined by the distance separating said longitudinal translation axis and the upper periphery 48 of the recess 47 which, according to this design, can have a linear shape and inclined so as to vary the distance from the maximum center distance e _M to the minimum center distance e _m , and vice versa.

The longitudinal recess 47 may comprise different design modes. Indeed, according to a first mode of conception illustrated in figure 3 , this recess 47 is opening at the lower end of the trigger piece 33, that is to say at the lower end of the plate 39, 41. Such a recess design 47 has the function of ensure a contact of the upper side 50 of the initial portion 49 with the upper periphery 48 of said recess 47, so as to ensure the contact between these two elements in slip position, as described above, and thus avoid the connection between the movable part 27 and the fixed part 25.

According to an alternative design of the recess 47 as illustrated in FIGS. Figures 1 and 2 and in figure 4 , this latter is constituted by a circular-shaped light, this circular form preferably having a flared shape on the downstream side of the plate 39, 41. This flared circular shape makes it possible in the first place to ensure a contact on the side upper 50 of the axial portion 49 with the upper periphery 48 of said light, at its first end 53, and second, allows to introduce a vertical clearance between said upper side 50 of the axial portion 49 and said upper periphery 48, on the side of its second end 55, so as to provide a clearance between the two elements allowing, when the user exerts pressure on the heel during braking, that the deformation of the plate 11 according to which the movable portion 27 is approaching the fixed part 25 is sufficient for the wheel or wheels 5a, 7, 5c, 5d of the bearing system or systems 5, 7 come into contact with each other. on the roller or rollers 21a, 21c, 21d, that is to say it makes it possible to reach the minimum center distance e _m .

In addition, this light constituting said recess 47, has the function of limiting the spacing between the movable portion 27 and the fixed portion 25 during slippage, and possibly during braking. Indeed, the lower perimeter 52 of the light 47 is adapted to come into contact with the lower side 54 of the axial portion 49, which prevents excessive spacing between the movable portion and the fixed portion. Furthermore, the lower perimeter 52 of the light constitutes a wall comprising, preferably a circular shape, arranged to limit the spacing between the two fixed and movable parts 27, both during slippage and during braking. This circular wall can also be scalable, in a manner identical to that described above, the contact between the lower side 54 of the axial portion 49 and the wall of the lower perimeter 52 of the light forcing the movable portion 27 to approaching the fixed part 25 to reach the minimum center distance e _m , especially when the user does not exert sufficient pressure with the heel to deform the plate 11.

Preferably and not limitation, the rod 31 is composed of two parts 31a, 31b mounted sliding relative to each other. The upper part 31a comprises a set screw 51a constituting said adjustment means 51 of the length of the connecting rod, the latter making it possible to limit the length of the connecting rod when the actuating device 28 is actuated. In addition, the telescopic assembly between the upper part 31a and the lower part 31b of the connecting rod 31 makes it possible to lengthen it by avoiding any action on the trigger piece 33, so as to prevent it from returning to its initial locking position when the roller is braking. Such a design of the rod 31 is of particular interest when the actuating device 28 is such that constituted by the Figures 1 to 3 . It can however be implemented with the actuating device 28 as illustrated on the figure 4 and consisting of a piece arranged under the front end of the sole of the footwear element.

Thus, as illustrated in Figures 1 to 3 when the actuating device 28 is constituted by a rod, the action on the upper part 17 of the rod causing the pivoting thereof towards the front of the roller, has the effect of lengthening the rod 31 without effect on the trigger device 33 as illustrated in FIGS. figures 4 and 7. On the contrary, when the upper part of the rod is actuated towards the rear of the roller, the latter pivots downwards, causing the upper portion 31a of the rod 31 to slide relative to the lower part 31b of the roller. this until the adjusting screw 51a secured to the upper portion 31a abuts the upper end of the portion 31b of said rod, as illustrated in FIGS. figures 5 and 6. The rod is then driven down and actuates the trigger member 33 so as to rotate and allow unlocking of said trigger member 33 to allow the connection between the movable portion and the fixed portion such that illustrated in Figure 6.

The triggering part 33 may also comprise a return element such as a spring, implemented on the triggering part 33 as illustrated on FIG. Figures 1 to 3 and 8, this return element being arranged between said trigger piece 33 and the fixed part 25 of the plate so as to ensure the rotation or translation of said trigger member 33 to ensure its return to the locking position.

Preferably, the braking element 21 is implemented by means of a braking roller as illustrated in FIGS. Figures 1 to 4 . The rotary movement of the roller has the advantage of friction between two moving parts which allows progressive braking unlike the friction between a fixed part and a moving part that can generate a risk of blockage of the system and, consequently, shots.

This braking roller 21c, 21d preferably comprises a profile which is arranged to have at least two contact points 101, 103 with the wheel 5c, 5d, these contact points 101, 103 being situated at radii having a different length. relative to each other as illustrated in an example in FIG. 6. Thus, two points of contact are provided between the wheel and the roller causing speeds at the two points of contact between the rollers and the different wheel, having effect of generating friction directly between the roller and the wheel, without the need to use an additional braking element acting on said roller 21 to brake it and reflect said braking on the wheels, the latter solution however still possible with the use of a traditional pebble.

According to a variant of design, it is possible to replace said braking roller 21a, 21b, 21c, 21d by another braking element 21 of the fixed braking shoe type on the movable part 25, said pad preferably having a suitable circular shape the shape and radius of the wheels of the roller.

As described above, the pusher of the triggering device 29 is implemented by means of a rod 31 actuated under the effect of the actuating device 28 and for driving the movement of the trigger piece 33. It would be however, it is possible to design a pusher of electronic and / or magnetic type remotely actuated by the actuating device 28, for example of the control box type, the remote triggering of said pusher enabling said pusher to act on the piece of tripping 33 to move it in the locking position of the movable part 27 and the fixed part 25, or conversely of unlocking said parts. This pusher may further consist of the combination of a servomechanism or a jack, associated with a connecting rod, the servomechanism or jack being actuated by a control button.

Preferably, the braking pad, according to the different variants illustrated in FIGS. Figures 1 to 4 , comprises blocking means of the pad in the slipping position ensuring the spaced apart position of the pad between the fixed part 25 and the movable part 27, these locking means being able for example to consist of a locking latch forming a stop on the piece triggering 33 so as to prevent the activation thereof and to maintain the skating position. Such locking means have a remarkable advantage when the pad is used in extreme conditions, for example for the realization of figures or acrobatics; they allow to occasionally block the pad for such use, the user having than to neutralize said locking means when it wishes to be able to use the braking system again.

Claims (16)

Roller (1) comprising a frame (3), at least two bearing systems (5, 7) each consisting of at least one wheel rotatably mounted on a transverse axis of rotation (51), and at least one braking element (21), the frame comprising at least one longitudinal plate (11) on which are mounted in line the rolling systems and a foot locking device (13) for securing the foot with the roller, said plate (11) having two parts, one (25), said fixed, is integral with the locking device (13) and receives at least said braking element (21), and the other (27), said mobile, receives at least one of bearing systems (5, 7) arranged under the braking element (21) to make contact with it and to brake it when the movable stage (27) approaches the fixed part (25), the roller comprising a actuating device (28) arranged on the frame (3) to be controlled in particular with the foot or the leg of the user, characterized in that said roller comprises a pusher (31) and a triggering part (33), said pusher, in particular a connecting rod (31), being connected, on the one hand, with the actuating device (28). ) and, on the other hand, with the triggering part (33), said triggering part (33) consisting of at least one plate-shaped part (39, 41), adjacent to the rolling system (5, 7), said plate (39, 41) being mounted in rotation with a transverse axis or in longitudinal translation with the fixed part (25), in particular at its rear end (45), and in translation with the moving part (27). ), to move from a locking position to an unlocking position under the action of the actuating device, said plate (39, 41) blocking the spacing between said fixed (25) and movable (27) parts during the locking, and on the contrary, allowing their approximation when unlocking. Roller (1) according to claim 1, characterized in that the longitudinal plate (11) is split over part of its length, so as to constitute the two fixed (25) and movable (27) parts and to allow the approximation of said movable portion (27) to said fixed portion (25) by elastic deformation of said platen (11). Roller (1) according to one of claims 1 to 2, wherein the plate (39, 41) comprises a longitudinal recess (47), the movable part (27) comprising at least one transversely arranged axial guide portion (49). and positioned within the longitudinal recess (47) to which it is able to translate. Roller (1) according to claim 3, wherein the axial guiding portion (49) consists of a portion of the axis of rotation (51) of one of the rolling systems (5, 7), said axial portion ( 49) possibly being provided with an intermediate piece (49a) facilitating sliding. Roller (1) according to one of claims 3 or 4, wherein the shape of the longitudinal recess (47) is scalable, so that the distance separating the pivot axis (43) or the longitudinal translation axis of the plate (39, 41) and the upper periphery (48) of said recess (47) receiving the axial guiding portion (49) is degressive, and that, in the normal slipping position, the upper side (50) of said portion axial guide (49) is blocked by the upper periphery (48), on the side of the first end (53) of the recess (47), the distance between the pivot axis (43) or the axis of longitudinal translation and the axial portion (49) being maximum e _M and corresponding to a position released from the rolling system (5, 7) with respect to the braking element (21), while in the braking position the axial portion (49) is positioned on the side of the second end (55) of the recess (47) and its upper side (50) is vented from the circumference (48), the distance between it being at least e _m and corresponding to a contact position of the rolling system (5, 7) on the braking element (21). Roller (1) according to claim 5, wherein the longitudinal recess consists of a light comprising a flared shape on the downstream side of the plate (39, 41) to introduce a vertical clearance between the upper side (50) of the axial portion (49) and the upper periphery (48) of said recess (47), the side of its second end (55), to achieve the minimum center distance e _m . Roller (1) according to claim 6, wherein the lower perimeter (52) of the lumen (47) constitutes a wall, arranged to limit the spacing between the movable portion (27) and the fixed portion (25). Roller (1) according to one of claims 1 to 7, wherein the rod (31) comprises adjusting means (57) arranged to adjust its length and the activation position of the trigger piece (33) when the actuating device is activated. Roller (1) according to one of claims 1 to 8, wherein the braking element (21) consists of a roller (21a) rotatably mounted along a transverse axis of rotation (77) on the fixed part (25). ) and the rolling system (5, 7) consists of a single wheel (5a, 7a) rotatably mounted on the axis of rotation (51) and adapted to come into contact with the roller (21a) when the moving part (27) approaches the fixed part (25). Roller (1) according to claim 9 according to one of claims 3 to 7, wherein the trigger piece (33) has the shape of a "U" whose two lateral sides (79a, 79b) constitute two plates (39,41) each provided with a circular longitudinal recess (47), said plates being arranged on the lateral sides of the movable part (27), the ends of the axis of rotation (51) constituting two axial guide portions (49) disposed in said recesses (47). Roller (1) according to one of claims 1 to 8, wherein the braking element consists of two rollers (21b, 21c) rotatably mounted along a transverse axis of rotation (77) on the lateral sides of the fixed part (25) and the rolling system (5) consists of two wheels (5b, 5c) rotatably mounted on the axis of rotation (51), the wheels (5b, 5c) being arranged on the lateral sides of the moving part. (27) and able to come into contact with the rollers (21b, 21c) when the movable part (27) approaches the fixed part (25). Roller (1) according to claim 11 according to one of claims 5 to 8, wherein the trigger piece (33) consists of a single plate (39) disposed in the central part at the rear of the plate ( 11), the axial guide portion (49) being constituted by the central portion of the axis of rotation (51). Roller (1) according to one of claims 9 to 12, wherein the roller (21a, 21b, 21c) comprises a profile arranged to have at least two points of contact with the wheel (5a, 5b, 5c, 7a), these contact points (101, 103) being located at radii of different lengths to exert a direct friction between the roller and the wheel. Roller (1) according to one of claims 1 to 13, wherein the actuating device (28) consists of a rod which comprises at least two parts (15, 17) hinged together, particularly in terms of malleoli, along a transverse pivot axis (19), the first part (15) enveloping at least the heel of the foot and the second part (17) enveloping at least the lower portion of the calf, the pivoting of the second part (17) the rod for actuating the rod (31). Roller (1) according to one of claims 1 to 13, wherein the foot blocking device consists of a footwear element (79) whose front end (81) is able to deform, the device of actuation (28) consisting of a piece (83) arranged under said front end (81) of the footwear element (79) and integral with the connecting rod (31) of the braking system (9), said deformation of the footwear member for moving said workpiece (83) and actuating said link (31). Roller (1) according to one of claims 1 to 15, wherein locking means are arranged to occasionally block the position of the release member (33) in the locking position during slippage.

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