FR2761273A3 - SLIDING BOARD - Google Patents

Abstract

The invention relates to a sliding board with an upper surface to stand on and a lower surface to slide on (2). Said board has a central sliding construction (3) protruding downwards and a guiding construction (4), which, when seen from the direction of travel, extends and protrudes downwards on both sides at least in the direction of travel. The inventive board is characterized by its blown plastic hollow body design with inner reinforcement strips or points (10) devoid of in situ foaming. The manufacturing method for the inventive sliding board comprises the following steps: a) extrusion of a flexible hose-shaped hollow plastic body from an extruder, b) introduction of said hollow plastic body into a sliding board mold, and c) blowing the hollow plastic body to form a sliding board. The mold enables both reinforcement strips or points to be formed on at least one of the halves of the shell and thermal soldering of said reinforcement strips or points with the opposite half of the shell.

Description

SLIDING BOARD

  The present invention relates to a gliding board, that is to say to an article of equipment ie (sport. On which the user of a board can descend a slippery eyelash slope. glides are generally known under the name of snowboard (silsnow board), but their fields of application are not however limited to natural or artificial snow, but these boards can also be used on slopes prepared for gliding and covered for example coniferous needles, volcanic debris, heap debris, etc. I () Gliding boards or ncigc boards are known in the form of substantially planar boards constricted in the longitudinal direction and provided with front ends and rear. t lne lface d (the glide (sole) pointing down is formed in a flat, unstructured manner. The gliding board is somewhat flexible and is directed, taking account of its constricted shape, when the board is

  bent, by placing a load on one of the sides.

  Gliding boards of this type require a relatively good driving skill.

  highly sophisticated from the user of the board and are not really

  suitable for use by children or by people who are not very athletic.

  This situation is aggravated by the steering mechanism, which, when traversing a curve, leads to a derivative displacement, i.e. to a component of the weight which is transverse with respect to the direction of the length of the board. Consequently, significant transverse forces appear. These known gliding boards are therefore all provided with foot hooking loops or retaining devices similar to ski bindings for special boots. In this way, the user of the board is somehow "attached" to the board. He cannot thus lacilically modify the position of his feet on the gliding board or even place a foot on the ground in order to help his maintenance, when stopped, or when the board slides at low speed. Alin dic not to fall when it slides, or when it is stopped, it is necessary d (to have some experience) (the board slides

  3 () and an excellent balance sheet.

  It 'Lic object the invcntion is prlcisémenlt to propose a board of gliding whose properties allow the use of the board of gliding by enlants or else

  by inexperienced or not very sporty people.

  To this end, according to the invention, the gliding board or snowboard comprises an upper face for placing the feet and a bottom face for gliding, provided in the center with an elongated sliding structure in the direction of movement. protruding and downward, as well as, viewed in the direction of movement, on both sides (the sliding structure at least one guiding structure. elongated in the direction lI IN '' 'I-ISq1) 4 I) () (- 24tt'l, llD} 7 / 1l of displacement. L protruding downwards and coI \ vCxe relative to lt structure

  slides and extends less far down than said structure (slides.

  The aim of this gliding structure projecting towards the center provided for this gliding board is to obtain a straight line gliding substantially without braking and to enable it to be used on slight slopes for beginners. Consequently. the gliding structure must be designed in such a way that the gliding board can be supported only by the gliding structure. at least On U111 SOl relativemllent hard when sliding in a straight line, and when the load is placed in the center. I, the sliding structure must be capable of offering the

  I O more low resistance possible to slip.

  The sliding structure preferably has a ski-type structure with a concave recess extending longitudinally and soles adjacent to

  the recess or the recesses at the right border.

  Given its sliding properties and the necessary support surface, the structure is advantageously made such that it is not too wide but

  that it be continuous over the entire length of the gliding board.

  The lateral guide structures, on the other hand, have the function of causing a curved gliding of the gliding board in the event of lateral load and correspondingly tilting of the gliding board. To this end, they are provided according to the invention, so as not to protrude as far as the sliding structure and while being flexed convexly with respect to the sliding structure. Assuming that the gliding board is placed on a rigid floor. the displacement of piloting corrlespolnd to a tilting of the board of gliding around its longitudinal axis, and to the subsequent conitact between the guiding structure ct the ground and unlle curve curved by the inuuence of the sliding properties plar the lform itchlie of the structure guide. On slightly rigid or non-rigid soils, this tilting movement corresponds rather to a modification of the introduction (the relative forces in the structure of

  smooth and in the structures (e guidagc.

  l) u fact (that the guiding stlruLctLures present this effect (the properties of 3 <) guida. "relatively good or. otherwise lit. its gripping properties (" grip ") 'ct (tiqle Is properties (the stupprlt or ( lc glissc llaitapparaitlronlt not penld (lant unc descentc dhoite dIe the slope. the structures (the guidance are provided (the lfaçon simple and (Straight (l laepentetlesc4estlàeeire.euse in the form of a simple profile with narrow cross section. c ' is to read

in the form of projecting rails.

  Although in principle, several guide structures can be provided on each side of the gliding structure to promote the sliding properties straight, the sole of the gliding board should not however be structured too lortement as a whole. A favorable compromise between the straight sliding properties and a defined driving behavior is established in advance. A single guide structure on the side of the sliding board. The sliding properties can be incorporated by the proIll and the curvature of the sliding structures, but especially by the ICesureI in which the structure d (the sliding protrudes more towards the Basque the guiding structures. The more this difference is low, the more the gliding straight will be braked and the more the plank (the gliding will react in a definite way to a shift in weight or in the center of gravity by a tread in a turn. On the other hand, it is greater difference requires a better sense of balance on the part of the board user. Of course, these design nuances of the overall sole of the board (1) board must also take into account the terrain it slides

respectively aims.

  The guide structures can also be integrated into the outer edge of the gliding board, particularly in the rail design, so that the lateral end of the guide structure on one side is respectively identical to one edge. outside. This leads to an elegant uniform appearance, not only caused by the inevitably constricted shape of the gliding board, but also leads to an exceptionally good grip or "grip" during gliding in turns, due to the thickness. of the gliding board which also appears by the height of the guide structure. In addition, such a form of gliding board

  Simplified also offers manufacturing advantages.

  It is not absolutely necessary to have braking means for the gliding board, but it is used to provide such means. For this purpose. a braking projection is provided at the rear end of the gliding board. which, in order to optimize the braking effect, presents a relatively marked and resistant profile which projects transversely to the direction of movement, that is to say transversely to the structure dc slides. The gliding board is braked by placing the load at the back of the gliding board during the gliding. The braking protrusion part protrudes a shorter distance than the structure c slides. this way to ailIcct as little as possible the slide in a straight line. l) in the best solution, it 3 () would be fixed in an upwardly bent portion of the rear end of the cliplate plank. (ie tellc fa; on CIline it is in contact with the ground only in the case where it causes a very strong tilting movement (the board plank glides around

sound (the lateral axis.

  Comimec this is obvious from the above explanations concerning the shape of the sole, a curved edge line of the gliding board according to the invention corresponds to a curved line whose curvature is between the (stronger) curvature of the guide structure causing the gliding in turns and the straight design of the central sliding structure. It depends on the asymmetry of the load of the sliding board provoked by the user to what extent the sliding line

  curved tends more towards one or the other of these two limits.

  It is typical for the gliding board according to the invention that it does not appear

  of drift component or if it is not a very weak component of drift, i.e.

  to say that the lateral lorces during a curved glide are therefore relatively laic for this type of d (the gliding board. The gliding board according to the invention can thus be cut much more easily and has the consequence that an upper face anitiderapanlite on the gliding board is sufficient, and it is not necessary to provide loops for hooking the feet. The freedom of 1) the user of the board is thus greater and the difficulties , in particular

  for a beginner to the learning course, are considerably reduced.

  In this Ségard, the flexibility and adaptability of the board are equal

  led increased. () You can also sit or lie on the board or you can use it as a sledge for children. The manufacture of the board is thus also facilitated, since an upper non-slip surface can be easily manufactured from an appropriate profile and by an adequate selection of the

  material of the gliding board or by providing for the attachment of a non-slip pad.

  An embodiment of the gliding board which is simple to manufacture and very simple to handle is constituted by a hollow body of blown plastic material, which is preferably provided with internal ribs or internal connecting points for a hollow chamber structure. sufficiently stable. The additional material, as well as the additional shaping step and the additional material weight

  alveolar thus become superfluous.

  l In suitable material for the gliding board according to the invention in this regard and

  generally consists of polyethiylene.

  D) 'other goals, characteristics and advantages will appear on reading the

  description of an embodiment of the invention. made without limitation and cn

  Regardl of the annexed drawing in which - Figure 1 is a view (below: (- Figure 2 is a frontal view with the underside pointing up; - ld figurie 3 cst iunlle side view (the smooth lplancliccc) according to the inventionl with a facet (the bottom pointing to the left; - Figure 4 is a schematic cross-sectional view through the board

  glide, viewed in the longitudinal direction to illustrate the internal structure

  superior; and - Figure 5 is a top view of the gliding board, in which

  additional level lines are drawn forward and backward.

  RI INI, I I1 _i.ll. 1 '' / 7-l Il I, a ltigre 1 represents in view d (the underside of a board dc glissc according to the inventio, dlanIs which end the frontal, that is to say the front of the plank

  slides, is located above. and the back part. this is the rear 8, is located at the bottom.

  L) them parallel strips extend from front to rear 8 in the center of the gliding board, said strips representing the soles 6 of oil structure gliding protrudes centrally 3. the Lde sliding structure 3 further comprises a concave recess 5 between the

two soles 6.

  This appears clearly from the fl'ontale view in FIG. 2. in which it can be seen that the recess 5 is relatively flat, that is to say considerably soft 1 () prolongs the height of which the sliding structure 3 is offset relative to the parts of the sole 2 located laterally thereto, that is to say the underside of

the gliding board.

  On the whole, the sliding structure 3 forms a kind of ski having sliding lines with straight lateral edges, said ski extending over the entire

length of the board.

  Figures 1 and 2 further show that the narrow rail projections 4 are provided to serve as a guide structure on both sides of the ski-like sliding structure 3, behind the offset part of the sole 2 and on the rim or side edge of the gliding board. These guide structures protrude less, as can be seen in FIG. 2, relative to the offset part of the sole 2, than the central sliding structure 3, and moreover, as can be seen. see in figure 1, they are flexed convexly with respect to the structure of

  central glide over most of the length of the gliding board.

  This convex curvature coincides with the outer contour of the gliding board, that is to say with the lateral outer edges 7 (see FIG. 2), with which the guide structures 4 are integrated, that is to say say that when viewed from the side, they are continuous. As a result, the gliding floor has a narrowing

  lateral corresponding to the ormeinc of the structures (the guiding 4.

  Figure 3 shows a side view of the gliding board, in which the 3 () two lines on the left edge of the gliding board show the difference between the protrusion (the sliding structure 3 and the stl-ruLctll- Guide rails 4. The term sole "dnesignie somnmillrlcient the inner face (the underside on the entire gliding board, colmprcilnanit the structure of (gliding 3. the guide structures 4 and the intermediate zones located between them. It can be seen from FIGS. 2 and 3 3 together that the front end and the rear end 8 of the gliding board are bent or folded up. The bending of the front end is mainly for the purpose of prevent diving into soft ground, such as fresh or deep snow. The upward deflection of the rear end 8 allows the protruding part of the groove to be fixed) 9. shown in ligurc I and s 'extending transversely to the sliding structure 3 cn forms d (e ski and whose rear end is aligned with that dc the rear part. I es parts of lieinagce 9 protruding do not come or practically not in contact with the ground during course (the normal S lissc. The parlties protruding come into action only when the user ic the board places it fully loaded as sLir- I fil bent back end 8 Liqle lal gliding board swings around its transverse axis coming in contact with the ground by its rear end 8 bent \ 'ers the hlaut. iIn addition, the parts bent towards the liaut of the front end and dc the rear end 8 are important for carrying out certain tainles 1 () gliding maneuvers, for example if the front end and the rear end are loaded easily and are used as a pivot point for doing

  turn the glissc board on the spot.

  Figure 4 is a schematic view which. from its perspective.

  corresponds to FIG. 2, but which represents a cross section through the board for sliding. Beside the details which have already been discussed previously, we can see connecting ribs 10 which are formed continuously by corresponding grooves formed in pairs on the upper face 1 of the gliding board, between the upper face and the sole. 2. The thicknesses of the material which is actually thicker than indicated by the lines drawn, lead in the region closest to the sole of each groove to contact or fusion of the groove and / or

  ribs for connection with the sole.

  These grooves are also shown in FIG. 5, as they are obvious and visible from the upper face I. that is to say from the upper face of the gliding board. This results from the manufacture of the gliding boards shown on the figures, by blowing polyethylene into a hollow body. Through this process. it should be realized that articles which have only one wall, which corresponds to the lfigul'e 4 i unellC single peripheral line continues eyelash cross section. If we want to cover the grooves of the connecting ribs, which are open towards the upper lace I, there is a need for another step in the tralnsfornliation and it follows that the price

  3 () and the weight of the gliding board require substantially lltjorés.

  It is important (to provide IS the openings in the SIcricure flace. Instead of the seal (l so that they cannot affect the properties of

olissc die sole 2.

  FIG. 5 shows the level lines at the front and rear ends of the gliding board, and which symbolize the parts bent or folded towards

  the top already indicated in figure 3.

  In addition, the faces intended for the feet 11 on the upper face 1 are visible in FIG. 5, these surfaces consisting of matt coverings in non-slip elastomer k I.IS'14 11} (_ I -, cp [", 1 ., ó 10)) 7 - (, Il)

  and which are glued in corresponding flat digging on the upper face 1.

  For this purpose, it is possible, for example, to use neoprene rubber or cellular rubber. The oval shown in the upper part of Figure 5 is used to place a logo

  from the manufacturer, provision may also be made to provide it as an anti-

  slip. Finally, we will consider the three dimensions designated by the signs of

  References d, h and b in Figure 4.

  b designates the width of the upper face I of the gliding board, which. especially when this board is used as a snowboard for children, can be chosen smaller than usual. It will preferably be adapted to the shoe size typical of the corresponding user group. The manufacture of boards of different width for groups of age users

  different is also possible.

  d denotes the "height difference" between the central sliding structure 3 and the lateral guide structures 4, that is to say the length of which the sliding structure 3 projects more than the guide structures 4. L maximum thickness of the gliding board h results from the total height of the outer edge 7 with the lateral guide structure 4, and the additional "height" d of the

sliding structure 3.

  The details described above of the gliding board according to the invention can be considered essential for the invention, whether taken individually

  or in different combinations with each other.

  Of course, the present invention is not limited to the embodiment described and shown, and it is susceptible of numerous variants accessible to

  a person skilled in the art without departing from the spirit of the invention.

  R I IS, '' I IsN l 1) () (- 2'4% 12cJ 1. [I7 - 7/10 (

Claims (8)

  1.- Gliding board or snowboard comprising an upper surface for placing the feet (1) and a bottom sliding surface (2) provided with a sliding structure (3) projecting in the center and downwards and elongated in the direction of movement, seen in the direction of movement on both sides of the sliding structure (3) at least one guide structure (4) elongated in the direction of movement projecting downward, which is convex with respect to to the structure of   slides (3) and extends less far downwards than said sliding structure (3).   I () 2. A gliding board according to claim 1, in which the sliding structure (3) has a ski shape with a concave recess (5) extending   longitudinally and with sliding faces (6) with a straight edge.   1 5 3.- sliding board according to claim 1 or 2. wherein the structure   gliding board (3) is provided continuously over the entire length of the gliding board.   4. Gliding board according to any one of the preceding claims,   in which the guide structures consist of projecting parts (4) in the form of simple narrow rails.   5. Gliding board according to any one of the preceding claims,   in which two sides of the sliding structure (3). is respectively planned another guide structure (4).   6. Sliding board according to any one of the preceding claims,   in which the lateral outer edges (7) of the gliding board, seen in the direction of movement, are each integrated into a guide structure (4) in   giving a relatively smooth surface.   7. Gliding board according to any one of the preceding claims,   having a projecting braking part (9) projecting over a distance less than the sliding structure (3) and extending transversely to the latter, at the rear (8) from laditc structure.   8. Gliding board according to any one of the preceding claims,   in which the upper face (1) is non-slip and is devoid of any buckle foot hooking.   9. Gliding board according to any one of the preceding claims,   produced in the form of a hollow body made of blown plastic. and provided with internal connecting ribs or points (10) and devoid of filling with cellular material.   10. Gliding board according to any one of the preceding claims, made of polyethylene.