EP2249932B1 - Roller 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 chassis, at least two rolling systems each consisting of at least one wheel rotatably mounted on a transverse axis of rotation, and a 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 thereof 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 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 even with the leg.

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 connecting 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 end thereof with the trigger piece. In addition, the triggering part consists of two locking elements, one upper and the other lower, mounted in pivot connection with respect to each other, the upper locking element being pivotally mounted with the lower part of the connecting rod and with the fixed part, the lower locking element being pivotally mounted with the movable part. These locking elements are able to cooperate, in particular by forming a stop against each other, to block the spacing between the fixed part and the movable part during locking and on the contrary to allow their approximation during 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 allowing 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, in particular at the level of the malleoli, along a transverse axis of pivoting. The first part envelopes at least the heel of the foot disposed within 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 build on this second part.

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.

• les figures 1 à 4 présentent un premier mode de conception du roller présentant trois roues disposées en ligne et montées en rotation suivant des axes de rotation transversaux, chaque roue constituant un système de roulement. En outre, ces figures 1 à 4 présentent un mode préférentiel de conception du dispositif de déclenchement selon la présente invention ;
• la figure 5 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 6 illustre un exemple de mise en oeuvre de l'élément de freinage, notamment agencé sur le roller illustré en figure 5.

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

• the Figures 1 to 4 present a first design of the roller having three wheels arranged in line and mounted in rotation along transverse axes of rotation, each wheel constituting a rolling system. In addition, these Figures 1 to 4 show a preferred mode of design of the tripping device according to the present invention;
• the figure 5 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 6 illustrates an example of implementation of the braking element, in particular arranged on the roller illustrated in figure 5 .

As illustrated on Figures 1 to 5 , 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 to 4 , the plate consists of two pieces 25a, 27a, the first piece 25a constituting said fixed portion 25, and the second piece 27a constituting said movable portion 27. In addition, the second piece 27a is articulated with the first piece 25a at a pivot connection 26 disposed at the front end of said second piece 27a, which allows the rear end thereof to approach the rear end of the first piece 25a.

However, it is possible, according to a variant, to provide for the longitudinal plate 11 to be slotted over part of its length, from its rear end. 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 in this case for producing the plate 11, in particular made of composite material, allows the elastic deformation of said plate 11 and thus the approximation between the fixed portion 25 and the movable portion 27. This slot is preferably made horizontally on the plate. Other variants remain possible, as for example that illustrated in figure 5 where the plate 11 is constituted by a flexible piece curved at its front end and constituting an elongated and lying U, one part of which constitutes the fixed part 25 and the other part constitutes the movable part 27.

According to these various conceptions illustrated Figures 1 to 5 , the roller comprises at least two rolling systems. According to the design method carried out on the Figures 1 to 4 the roller 1 comprises three bearing systems 5, 7, 10, these bearing systems consisting of a wheel 5b, 7b, 10b rotatably mounted along a transverse axis of rotation 51 on the plate 11. According to this design, only the two rear wheels 5b, 7b are mounted on the movable part 27, the wheel 10b being mounted at the front end of the fixed part 25.

According to a variant of design, especially when a slotted plate 11 is provided as specified above, four rolling systems are implemented. In this case, these rolling systems are each composed of a wheel mounted in line behind one another in the central part on the plate. These wheels are mounted in rotation along transverse axes of rotation 51. According to this design, the plate 11, and in particular the movable part 27, is arranged to allow the wheels to be partially fitted. Central. In addition, the front wheel is arranged at the front end of the fixed part 25 while the three rear wheels are arranged on the movable part 27, which allows the approximation of these three wheels towards said fixed part 25.

According to another variant of design illustrated on the figure 5 , the roller comprises two bearing systems 5, 7 arranged at the front and rear ends on the plate 11. According to this design, the bearing systems 5, 7 each consist of 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 embodiment of the roller 1 shown in FIGS. Figures 1 to 4 , the braking element 21 consists of a single braking roller 21b adapted to come into contact with the two rear wheels 5b, 7b when the movable part 27 approaches the fixed part 25. Concerning the embodiment illustrated in FIG. figure 5 , 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 5 , 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 foot locking device 13. This locking device 13, according to the design mode illustrated in FIGS. Figures 1 to 4 , 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, in particular, the advantage of ability to replace the footwear when needed while keeping the roller 1. According to a variant of design, as illustrated on the figure 5 , 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.

As illustrated on Figures 1 to 5 , 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 9. Different modes of design of the actuating device 28 of the braking system 9 are implemented on the Figures 1 to 5 . According to a first embodiment illustrated on the Figures 1 to 4 , on which the roller 1 comprises three in-line wheels, or even four wheels, the actuating device 28 consists of a rod comprising in particular two parts 15 and 17 hinged together, this hinge being constituted by means of an axis of transverse pivoting 19 arranged between the first lower portion 15 and the second upper portion 17, the connection being located in particular at 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 the design variant as illustrated on the figure 5 , the actuating device 28 of the braking system 9 is arranged under the front end of the footwear element 79, consisting of a shoe itself. This actuating device 28 consists of a part actuator 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 5 , 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 piece 33 when the actuating device 28 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, as illustrated in FIGS. Figures 1 to 4 , or with Exhibit 83, as shown on the figure 5 . In addition, this rod 31 is mounted in pivot connection to its second end 37 with the trigger piece 33. When the actuating device 28 is constituted by the rod, as illustrated in FIGS. Figures 1 to 4 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 5 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 to 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. Such adjustment means can be envisaged on the embodiment illustrated in FIG. figure 5 .

As illustrated on Figures 1 to 5 , 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 blocking 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 moving part, in order to allow their approximation and thus to put in contact the wheel or wheels of the roller with the braking element 21.

Trigger piece 33, as illustrated in FIGS. Figures 1 to 5 consists of two locking elements 61, 63. These locking elements 61, 63 are pivotally mounted relative to one another along a transverse axis 85. Furthermore, the upper locking element 61 is mounted in axis pivot connection 87 with the lower end 37 of the connecting rod 31, and in axially pivot connection 89 with the fixed part 25. Likewise, the lower locking element 63 is mounted in a pivot connection of axis 91 with the movable portion 27, the pivot axis 91 corresponding, preferably, to the axis of rotation 51 of the rear wheel or wheels 5b, 5c, 5d. Thus, when the rod 31 is actuated under the action of the actuating device 28, the latter actuates the upper locking element 61 which pivots with respect to the fixed part 25, along the pivot axis 89, said pivoting causing the lower locking element 63 to pivot relative to the axis 91; this action causes the unlocking between the two locking elements 61, 63 which pivot relative to each other, allowing the moving part 27 to approach the fixed part 25 under the pressure exerted by the user's foot .

As illustrated on Figures 1 to 4 , the upper locking element 61 is composed of a part preferably having the shape of a bracket, whose upper end 67 is mounted in pivot connection with the connecting rod 31, the angular portion 65 is mounted in pivot connection with the stationary part 25 of the plate 11 and the lower end 69 is pivotally connected to the lower locking element 63. In addition, the lower locking element 63 is composed of a rectilinear part whose upper end 71 is articulated with the lower end 69 of the upper locking element 61 and whose the lower end 75 is articulated with the movable portion 27 of the plate 11. In addition, the upper end 71 of the lower locking element 63 comprises a shoulder shape 73 adapted to bear on the lower end 69 of the angle piece, so as to form a stopper for locking the two locking elements 61, 63 in vertical position aligned with each other, as illustrated in FIG. Figures 1 and 2 . According to this aligned position, the spacing between the movable part and the fixed part of the plate is blocked, which corresponds to a position of the wheels 5b, 7b released from the braking roller 21b. In addition, it would be possible to design the stopper by providing, conversely, a shouldered shape or any other abutment means on the lower end 69 of the upper locking element 61, this stop stop being based on the upper end 71 of the lower locking element 63. Such a variant is for example illustrated on the embodiment of the roller "quad" where the lower portion 61a of the upper locking member 61 abuts on the lower locking element 63.

When the actuating device 28 is actuated, causing a displacement of the connecting rod 31 for pivoting the upper locking element 61, as illustrated in FIGS. Figures 3 and 4 said pivoting of the upper locking element 61 makes it possible to cause the lower locking element 63 to pivot, which makes it possible to disengage said parts from one another, the user being able to deform the plate 11 to allow the approximation of the movable portion 27 to the fixed part 25 by exerting a slight pressure on the heel.

In a preferential and nonlimiting manner, illustrated in Figures 1 to 4 , the rod 31 is composed of two parts 31a, 31b slidably mounted 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 allows to lengthen it by avoiding any action on the trigger part 33, so as to prevent its return to 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 4 . It can however be implemented with the actuating device 28 as illustrated on the figure 5 and consisting of a piece arranged under the front end of the sole of the footwear element.

Thus, as illustrated in Figures 1 to 4 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 for action to lengthen the connecting rod 31 without effect on the triggering device 33 as illustrated in FIGS. figures 1 and 4 . 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 thereof. 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 2 and 3 . The rod is then driven downwards and actuates the trigger piece 33 so as to rotate it and to allow the unlocking of said trigger piece 33 to allow the connection between the movable part and the fixed part as illustrated in FIG. figure 3 .

Preferably, and without limitation, the triggering part 33 comprises a return element such as a spring arranged between the upper locking element 61 and the lower locking element 63, so that when the user ceases to to exert pressure on the heel, said spring makes it possible to reposition the locking elements 61, 63 in the locked position of the two fixed and movable parts 27, as illustrated in FIGS. Figures 1 and 2 . Such a return element can also be implemented on the trigger part 33 as illustrated on the figure 5 .

Preferably, the braking element 21 is implemented by means of a braking roller as illustrated in FIGS. Figures 1 to 5 . Movement rotary wheel has the advantage of friction between two moving parts that 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, therefore, jolts.

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. compared to each other as illustrated in an example in figure 6 . Thus, it ensures two points of contact between the wheel and the roller causing speeds at the two points of contact between the rollers and the different wheel, having the effect of generating friction directly between the roller and the wheel, without it being it is necessary to use an additional braking element acting on said roller 21 to brake the latter and to pass on said braking to the wheels, the latter solution nevertheless being possible with the use of a conventional roller.

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, the remote triggering of said pusher allowing said pusher to act on the triggering part 33 to move it into the position blocking the movable portion 27 and the fixed portion 25, or conversely unblocking said parts.

Preferably, the braking pad, according to the different variants illustrated in FIGS. Figures 1 to 5 , includes means for blocking the slider 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 trigger piece 33 so as to prevent the activation of the latter and keep 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 only having to neutralize said locking means when he wishes to use the braking system again.

Claims (11)

1. A roller blade (1) comprising a frame (3), at least two rolling systems (5, 7), each constituted by at least one wheel mounted to rotate on a transverse axis of rotation (51), and at least one braking component (21), the frame comprising at least one longitudinal plate (11) on which the rolling systems and a foot blocking device (13) for securing the foot to the roller are mounted in line, said plate (11) having two portions, one of which (25), referred to as a stationary portion, is secured to the blocking device (13) and receives at least said braking component (21), and the other of which (27), referred to as the movable portion, receives at least one of the rolling systems (5, 7) positioned under the braking component (21) in order to come into contact therewith and to slow it down when the movable plate (27) approaches the stationary portion (25), the roller including an actuation device (28) arranged on the frame (3) to be controlled in particular with the foot or the leg of the user, said roller including a pusher and a triggering part (33), said pusher, in particular a connecting rod (31), being in connection firstly with the actuation device (28), the roller blade being characterized in that the pusher is secondly in connection with the triggering part (33), said triggering part (33) being constituted by two locking elements (61, 63) pivotally mounted relative to each other, the upper locking element (61) being pivotally mounted with the lower portion (37) of the connecting rod (31) and with the stationary portion (25), the lower locking element (63) being pivotally mounted with the movable portion (27), said locking elements (61, 63) being suitable for co-operating to block the spacing between said stationary and movable portions (25 and 27) when locked, and on the contrary to allow them to move towards each other when unlocked.
2. A roller blade (1) according to claim 1, wherein the longitudinal plate (11) is split over a fraction of its length so as to constitute the stationary and movable portions (25 and 27) and so as to enable said movable portion (27) to approach said stationary portion (25) by elastic deformation of said plate (11).
3. A roller blade (1) according to claim 1 or claim 2, wherein a stop abutment (73, 61a) is arranged between the upper locking element (61) and the lower locking element (63), said abutment defining the stop position of said elements (61, 63) in which the stationary and movable portions (25 and 27) are blocked and held apart.
4. A roller blade (1) according to any one of claims 1 to 3, wherein the triggering part (33) includes a return element, in particular a spring, enabling the locking elements (61, 63) to be repositioned in the position for blocking the stationary and movable portions (25 and 27).
5. A roller blade (1) according to any one of claims 1 to 4, wherein adjustment means (57) are arranged on the connecting rod (31) to adjust its length and the activation position of the triggering part (33) when the actuation device is activated.
6. A roller blade (1) according to any one of claims 1 to 5, wherein the braking component (21) is constituted by a roller (21b) mounted to rotate about a transverse axis of rotation (77) on the stationary portion (25), and the rolling system (5, 7) is constituted by a single central wheel (5b, 7b) mounted to rotate on the axis of rotation (51) and suitable for coming into contact with the roller (21a) when the movable portion (27) approaches the stationary portion (25).
7. A roller blade (1) according to any one of claims 1 to 5, wherein the braking component is constituted by two rollers (21c, 21d) mounted to rotate about a transverse axis of rotation (77) on the lateral sides of the stationary portion (25), and the rolling system (5) is constituted by two wheels (5c, 5d) mounted to rotate on the axis of rotation (51), the wheels (5c, 5d) being positioned on the lateral sides of the movable portion (27) and being suitable for coming into contact with the rollers (21c, 21d) when the movable portion (27) approaches the stationary portion (25).
8. A roller blade (1) according to claim 6 or claim 7, wherein the roller (21b, 21c, 21d) has a profile that is arranged to present at least two points of contact with the wheel (5b, 5c, 5d, 7b), these points of contact (101, 103) being situated at radii of different lengths so as to exert direct friction between the roller and the wheel.
9. A roller blade (1) according to any one of claims 1 to 8, wherein the actuating device (28) is constituted by a rod that comprises at least two portions (15, 17) that are hinged together, in particular level with the ankle bones and on a transverse pivot axis (19), the first portion (15) encompassing at least the heel of the foot, and the second portion (17) encompassing at least the bottom portion of the calf, the pivoting of the second portion (17) of the rod enabling the connecting rod (31) to be actuated.
10. A roller blade (1) according to any ane of claims 1 to 8, wherein the foot-blocking device is constituted by a piece of footwear (79) with a front end (81) that is suitable for deforming, the actuating device (28) being constituted by a part (83) arranged under said front end (81) of the piece of footwear (79) and secured to the connecting rod (31) of the braking system (9), said deformation of the piece of footwear serving to move said part and actuate said connecting rod (31).
11. A roller blade (1) according to any one of claims 1 to 10, wherein blocking means are arranged to block, occasionally, the position of the triggering part (33) in the locking position while skating.

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