EP1484092A1 - Adjustable rollerskate - Google Patents

Abstract

The skate includes a base (4) adapted to support a user's boot, a frame equipped with wheels and having a transverse arch in its central portion, and at least one rear quarter (11) capable of sliding on the base and adapted to surround the heel zone and the lower leg of the boot. The base has two edges (7,8) that project upwardly and surround the lower portion of the rear quarter. Each of the two edges has a longitudinal groove (10) capable of receiving a platform (20) provided on the outer sides of the rear quarter. An attaching mechanism allows the attachment of the rear quarter to the base in various positions.

Description

The invention relates to roller skates and more particularly to roller skates with aligned wheels, in particular those designed to produce acrobatic figures known as "aggressive" skates and which are intended for receive independent sports shoes.

One of the figures commonly performed with these skates consists of perform a cross slide using the central area of the skate as a sliding surface.

It is known to equip the chassis with a transverse arch which defines the central gliding surface of the skate. Indeed like the slides are most often carried out on rails or edges, these fit into the arch and thus wedge the skate in a position longitudinal defined. Current skates do not allow to vary the position of the user's heel relative to the transverse arch.

The present invention has the effect of making it possible to vary the relative position of the user's heel and the transverse arch.

The present invention also aims to allow a same user to use different sports shoes in the same "aggressive" skate while allowing it to keep the same adjustment of relative positioning between his heel and the transverse arch.

The present invention also aims to improve comfort and protection of the user during aggressive skating.

The present invention also aims to improve the holding side of the user's heel in an independent shoe skate.

The present invention also aims to improve the stability side of the elements adjustable in length of the shoe.

These different objects are achieved by providing a skate according to the claims 1 to 7.

In particular, these different objects are achieved by providing a pad intended to receive a user's shoe, which shoe having a sole and a heel area, which skate comprising: a base 4 intended to support said shoe, which base comprising a rim lateral 7 and a medial edge 8, each of said edges extending vertically upwards and comprising a longitudinal groove 10 formed in the internal face of said rim; a rear quarter 11 suitable for slide on the base 4 and intended to surround the heel area of said shoe, which rear quarter comprising a base 12, said base comprising on each of its lateral and medial sides, a sidewalk 20; of the fastening means 25 allow the rear quarter 11 to be fixed to the base 4 in different positions; in the skate according to the invention said ledges, medial and lateral, frame the base 12 of said rear quarter 11; and said sidewalks 20 slide in said grooves 10.

The skate according to the invention is suitable for receiving a sports shoe independent, that is to say not specially designed for said skate. What whatever the type of sole of this shoe, that is to say for example a largely protruding sole or a re-insole, the user can adjust the position of the hindquarters in relation to the central arch. In a way similar, the same base of the skate according to the invention could be used by people with different sizes.

In the skate according to the invention, the rear quarter adjustable in length includes two sidewalks projecting from the widest width of the lower part of said hindquarters. These sidewalks are kept inside grooves in the vertical edges of the base which has the effect optimize the lateral and longitudinal hold of the hindquarters on the base.

La figure 1 représente une vue en perspective d'un patin selon l'invention.

La figure 2 représente une vue en perspective de la base et du quartier arrière en position démontée.

La figure 3 représente une vue en coupe longitudinale du patin.

La figure 4 représente une section transversale.

La figure 5 représente une vue en perspective du patin selon l'invention, avec la chaussure.

The invention will be better understood and other characteristics thereof will appear on reading the following description and the attached drawing in which:

Figure 1 shows a perspective view of a skate according to the invention.

2 shows a perspective view of the base and the rear quarter in the disassembled position.

FIG. 3 represents a view in longitudinal section of the skate.

Figure 4 shows a cross section.

FIG. 5 represents a perspective view of the skate according to the invention, with the shoe.

Figure 1 shows a perspective view of the roller skate according to the invention. It includes a chassis 1 used for fixing the wheels 2. The chassis 1 has an essentially longitudinal structure at both ends which are fixed two wheels 2a, 2b. Of course, choosing a two-wheel chassis is not limiting and one can consider using a chassis with three, four or more wheels, arranged online or not. Between the two wheels 2a, 2b the chassis 1 has the shape of an arch 3 whose concavity is oriented downwards. This arch is used as a sliding surface for transverse slides. By its amplitude, between the two wheels and its large radius of curvature, this arch allows sliding in multiple directions. We are talking always cross slides although these can do with the axis longitudinal of the skate an angle less than 45 °. A base 4 is fixed on the chassis by means of two screws placed in the median plane of the chassis and spaced from each other by a distance of 167 mm.

As can be seen in Figure 3, the upper surface of the chassis 1 on which the base 4 rests comprises two recesses 24. Each of these recesses is centered on the through holes of the two screws and are intended to receive corresponding bosses from base 4. The connection between the chassis 1 and the base conforms to the UFS standard, the latter is described in patent FR 2 804 878.

The base 4 is equipped with two sliding shoes. The front gliding shoe 5 and the rear sliding shoe 6 are made of a material which promotes the slides like for example a DELRIN® type polyacetal. Of course this choice is not limiting and any other material may be used depending gliding properties sought. Preferably, we will choose a material whose sliding properties are better than those of the materials used for the base and / or the chassis.

The base 4 shown in perspective in Figure 2 comprises two vertical edges. The medial rim 8 comes from the lateral side of the base 4 along its entire length. The central part of the medial rim 8 is higher than the ends and comprises on its internal face means of support 34 in the form of stiffening ribs and on its external face a concave medial gliding surface 30 which can be used as sliding surface in line with the arch of the chassis. The means of support 34 may take a form other than that of the rib of stiffening such as thickening or an arch convex projecting towards the inside of the base and incidentally ensuring the arch support of the arch. In the rear part of the ledge medial 8 a longitudinal rib 9 is formed at the bottom of its internal face. This rib 9 is parallel to the base so that a groove 10 is thus defined between the rib and the bottom of the base. The front part of the ledge side 7 is equipped with attachment means 27 for attaching the means of front fixation of the shoe on the shoe.

The lateral rim 7 is similar to the medial rim 8 with means for support placed in the central part of it, behind a surface concave for lateral gliding 31. It also includes a rib longitudinal defining a groove. The concave side gliding surface 31 formed on its external face is noticeably less hollowed out than that formed on the side edge. The central area of the side rim, respectively from the medial rim, has a higher elevation than the front and back areas of it.

Front and rear gliding shoes include lifts vertical which cover the front and rear parts of the side edges and medial. So they promote longitudinal sliding not only against surfaces on which the bottom surface of the base is pressed, but also along the vertical edges.

Figure 4 shows the section of the rear gliding shoe 6 and vertical lifts 32 which cover the lateral and medial edges of the base 4. The sliding shoes 5, 6 also have a surface chamfered 33 at the edge separating their sliding surface horizontal substantially vertical sliding surfaces. This surface chamfered 33 is present on each of the front and rear shoes and on each of the lateral and medial sides, and it defines new gliding planes which make an angle included with the usual horizontal gliding planes between 30 ° and 60 °.

The rear quarter 11 comprises a base 12 placed on the part rear of the base 4. From this base come a lateral upright 13 and a medial upright 14. These uprights are used for anchoring on both sides means for fixing the instep of the shoe in the shoe. Backward of these uprights 13 and 14, the rear quarter has a wide opening 26. This large opening 26 makes it easier to put on shoes independent in the shoe without any overhangs of the sole or heel counter of the latter does not prevent optimal positioning the user's foot and lower leg. Above these amounts 13, 14, the rear quarter extends into a cuff 15 intended to wrap and hold the user's lower leg. The cuff 15 covers the lateral, medial and anterior sides of the lower leg, while the rear side is held by the upper part of the strap / tongue. The strap / tongue 16 consists of a lower part, the strap 17, which function of distributing the constraints of the instep tightening. It is connected to medial 14 by means of an adjustable strap (not visible on Figure 1) and to the lateral upright 13 by means of a notched strap allowing tightening at will thanks to a ratchet mechanism 18. The part top of the strap / tongue 16, constitutes a tongue 19 whose element rigid is linked to the frame of strap 17.

The base 12 of the rear quarter 11 is provided on each of its faces lateral and medial of longitudinal sidewalks 20 provided for slide inside the grooves 10. The sidewalks project outwards from the base to the level where it is widest. Thus the lateral holding of the base 12 on the base is optimized and therefore the inclinations on the sides of the user's lower leg are not likely to cause the edges of the hindquarters. The forward or backward flexural strength of the base 12 is also optimized by the longitudinal extension of the sidewalks 20.

Figure 4 shows a partial sectional view of a shoe according to the invention. The base 12 of the rear quarter 11 is held in the base 4 by the sidewalks 20, which are capable of sliding in the grooves 10 formed in the edges of the base. A slot 21 crosses the bottom of the base 12 of the rear quarter 11. This slot 21 receives a nut washer 22. The nut washer can slide in the slot but it is locked in rotation. The rear shoe covers most of the rear part of the base and it is from the shoe that the boss 23 intended to cooperate is made with the obviously 24 formed in the upper surface of the chassis. It is also in the rear shoe that is carried out a portion of the throat of which the edges are in contact with the upper sides of the chassis.

Adjustment of the hindquarters to the desired position is carried out by simple unscrewing the screw 25, then by sliding the rear quarter and finally by tightening the screw. Means for locating the relative positions of the rear quarter and base are provided on one of the vertical edges and on the rear quarter base. Advantageously, the rear screw 25 which fixes the chassis on the base according to the UFS standard also serves to block the translation of the hindquarters.

Inside the rear quarter, a cushioning wedge 28 is inserted. adaptable. It includes a horizontal part with a thickness included between 5 and 30 mm and which ensures the heel rise above the forefoot of the user. We chose for this wedge a foam type material rigid enough that throughout the use of the skate it will not produce no sagging and the heel elevation remains effective. The material is shock absorbing to ensure better comfort when receiving jumps. The periphery of the horizontal part extends vertically to serve as a comfort pad at the bottom of the hindquarters. In practice, the wedge 28 comprises two vertical wings 29 which line the inside of the uprights 13 and 14. The uprights 13 and 14 are made of rigid plastic material which can annoy the user, even when it is already shod in an independent shoe and it subsequently inserts his foot into the skate according to the invention. On the other hand, the longitudinal extension of the wings is greater than that of the uprights if although these protrude from the amounts 13, 14. As can be seen in Figure 3 the wings 29 project forward and backward of the uprights 13, 14. The part of the wings which exceeds the edges of the uprights 13, 14 prevents said edges from injuring the user. Furthermore the fact that these wings overhangs amounts guarantees the user a support gradient between the areas where his foot is securely held by the hindquarters and areas where he has no support.

Vertical wings can be cut to accommodate the skate according to the invention to a shoe having a wider sole. Likewise, when the user wants to use the skate according to the invention with a shoe whose upper is already well provided with cushioning material, it will cut the wings at their base.

FIG. 5 shows the pad before the introduction of the shoe 35. All the clamping means are open, that is to say the strap / tongue 16, the lower leg strap 36 and the forefoot strap 37. The user can then insert his foot with shoe 35 into the skate and then close and tighten the clamping means.

The embodiment described here is by way of example and the invention does not is not limited to this single embodiment but to any realization equivalent. For example the footwear part (base and rear quarter) which constitutes the heart of the invention can be mounted on a skate with three or more wheels whether this is an inline skate or not, or even still on a skate that is not specially designed for tricks acrobatic. It can also be mounted with a skate blade to ice cream.

NOMENCLATURE

1- chassis

2a, 2b- wheel

3- arch

4- base

5- front gliding shoe

6- rear gliding shoe

7- side edge

8- medial rim

9- rib

10- throat

11- hindquarters

12- base

13- lateral upright

14- medial amount

15- cuff

16- strap / tongue

17- strap

18- ratchet mechanism

19- tab

20- sidewalk

21- slot

22- nut washer

23- boss

24- obviously

25- screw

26- opening

27- attachment means

28- damping wedge

29- wing

30- concave surface for medial gliding

31- concave side gliding surface

32- vertical ascent

33- chamfered surface

34- support means

35- shoe

36- lower leg strap

37- forefoot strap

Claims (8)

Skate comprising: a base (4) intended to support the shoe of a user, a chassis (1) equipped with a plurality of wheels (2) and comprising a transverse arch (3) in its central part, at least one rear quarter (11) capable of sliding on the base (4) and intended to surround the heel area and the lower leg of said shoe, characterized in that : the base (4) comprises two vertical edges projecting upwards and framing the lower part of the rear quarter (11), each of the vertical edges comprises a longitudinal groove (10) capable of receiving a sidewalk (20) formed on the outer sides of said rear quarter (11), fixing means (25) allow the rear quarter (11) to be fixed to the base (4) in different positions. Skate according to claim 1, characterized in that the medial rim (8), respectively the lateral rim (7), is equipped with a concave surface for medial gliding (30), respectively with a concave surface for lateral gliding (31 ), located in the extension of the arch (3) of the chassis (1). Skate according to claim 2, characterized in that the flanges are equipped with support means (34) at the concave surface of medial gliding, respectively of the concave surface of lateral gliding. Skate according to claim 1, characterized in that sliding shoes (5, 6) are fixed under the base (4) at the front and at the rear thereof. Skate according to claim 1, characterized in that the rear quarter (11) comprises a damping wedge (28) comprising a horizontal part which ensures the heel elevation relative to the forefoot of the user and a circumference which s 'extends vertically so as to provide a lining for the vertical walls of said rear quarter (11). Skate according to Claim 5, characterized in that the said periphery of the damping wedge comprises two wings (29) which project from the said vertical walls of the said quarter. Skate according to claim 4, characterized in that the front and rear shoes include a chamfered surface (33) disposed at the edge separating the horizontal sliding surface from the vertical sliding surface and in that this chamfered surface forms a angle between 30 ° and 60 ° with the horizontal plane. Skate according to one of Claims 1 to 7, characterized in that the said fixing means (25) simultaneously secure the chassis (1) to the base (4).

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