FR2494658A1 - BODY OF TRACK SKATES WITH TUBULAR STRUCTURES, WITH SCREW FIXING SOLE - Google Patents

Abstract

SKATE BODY WITH TUBULAR STRUCTURES, WITH A SOLE WITH FIXATION BY SCREW FITTED BY VULCANIZATION ON A SHEET PLATE; THE SKATE BODY 1 HAS ON THE SIDE OF THE ROLLING SURFACE A RECESS 11 DELIMED BY THE BOTTOM 10 OF THE SKATE BODY AND THE TUBES 5, 6; IN THIS RECESS 11 IS FITTED WITH CONJUGATION OF SHAPES A SOLE WHOSE STRUCTURE ADAPTS TO THE SHAPE OF THE SKATE BODY FACING THE ROLLING SURFACE AND, BETWEEN THE PLATE OF THE SOLE AND THE BODY OF THE SKATE IS PROVIDED A LAYER OF RUBBER FIXED BY VULCANIZATION TO THE SKATE BODY WITH TUBULAR STRUCTURE OR TO THE PLATE OF THE SOLE.

Description

Body of track shoes with tubular structures, with sole

them with screw fixing

  The present invention relates to a body of pa-

  chenille tin, with tubular structures with a removable sole

  screw fixing, consisting of a layer of rubber

  tchouc fixed by vulcanization on a sheet metal plate.

  By US patent 27 19 758 it is known to

  serve as a sole with a skate body with a tubular structure.

  The sole is fixed by vulcanization on a sheet metal plate.

  The skate body is constituted by a welded structure, overlapping

  rubber green reported by vulcanization on the side of the

  rolling lets. The welded structure comprises two tubes which receive the connecting axes, a rib placed between the tubes and glasses-shaped bars for stiffening the tubes. Between the tubes, that is to say on either side of the rib, there are thus obtained recesses of elongated shape (in the form of troughs). The plate of the sole conforms to the shape of the tubes and of said recesses, it rests on the bars. Two assembly screws ensure

  fixing the sole to the skate body with tu-structure

bular.

  To ensure the strength of the screwed assemblies, deformable braking means are required here, preventing loosening. In the event of repeated replacement of the soles, the braking means which are coated by vulcanization in the

  sole, can no longer prevent loosening of the screws

  semblance, so that while the machine is circulating

soles may come off.

  The object of the invention is to produce a body

  skate with tubular structures with soles or cram-

  interchangeable pads, the soles or studs of which can be fixed on the skate body in a secure manner, with uncomplicated means and procedures. According to the present invention, this result is obtained by providing on the face of the skate body, which is opposite the running surface, a recess delimited by the bottom of the skate body and by the tubes, by giving the rear face sole shape

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  which matches that of the recess where the sole comes to be embedded and by providing between the body of the shoe and the plate in sheet metal which carries the rubber lining of the sole, a layer of intermediate rubber which is fixed by vulcanization either to the surface of the skate body opposite the running surface or on the rear face of the base plate

skating.

  What is striking, with the system according to the invention, is that thanks to the cumulative effect of the respective elasticities of the rubber lining of the sole and of the intermediate rubber layer, a caterpillar made with pads according to the present invention is characterized by a very quiet operation, that with the sole which takes

  also partially supported on the tubes, one obtains on the pis-

  very low tire pressure, per unit area of the sole, resulting in increased wear resistance

  of said sole, that in addition to the elastic mounting of the sole-

  on the body of the skate, we can realize under the same conditions

  tions an elastic mounting of steel cleats and finally, that thanks to the insertion of a layer of intermediate rubber under the plate of the sole, we can do without

  additional braking for the screwed elements of the assembly.

  According to an extension of the invention, the embedding of the sole is improved with wedging on the four sides and the transverse stresses which can be exerted on the assembly screw are eliminated by providing crosspieces at the ends.

  skate body tubes, the sole fitting into the recess

  rectangular in shape and bearing on said sleepers, the intermediate rubber layer extending over the surface of the recess those of the sleepers and tubes which are in

look at the running surface.

  To obtain good resistance to use, with

  usual manufacturing methods, according to the invention,

  tion, that the intermediate rubber layer is fixed by vulcanization on the aforementioned elements of the skate body. The skate body can thus be used many times because the intermediate rubber layer is almost unaffected by wear and the repeated fitting of new soles can

do without difficulty.

  The invention also provides for giving the layer

  of intermediate rubber, a greater thickness inside

  of the recess only on the tubes and the crosspieces which surround it, and to provide a certain space between the plate of the soleplate and the guide sleeve of the assembly screw. This increases the overall elasticity and, when tightening

  the sole fixing, the compressed rubber in the recess-

  ment enters said space and thus ensures the braking of

the single assembly screw.

  A variant of the invention provides for coating

  complete of the skate body with rubber while not leaving

  that the areas of interest to the elements (screw and nut) of

  appearance as well as the external faces of the crosspieces which

  join the ends of the tubes. A more economical production is thus obtained, the intermediate layer of rubber and a rubber cushion disposed on the side of the rollers being thus applied in a single vulcanization operation, this in addition to an improvement in the adhesion of the rubber to

the skate body.

  In the same spirit, an extension of the invention

  tion provides for the development of orifices passing through the body of the shoe, the rubber also penetrating into these orifices. We avoid

  thus local heat accumulations, a flow of heat

  their thus being able to flow between the face oriented towards the track and that which is on the side of the rollers. We thus avoid

  safely localized detachments due to phenomena

thermal nes.

  Finally, it is intended by the present invention to give the plate of the skate a bowl shape with curved zones corresponding to the surface of the tubes of the body of the

  pad and trapezoidal areas corresponding to the tra-

  terminal verses. This plate can thus be produced with

  economical manufacturing methods, by deep drawing

bottom of a sheet of sheet metal.

  In the drawing an example of

  realization of the invention. The different figures show res-

pectively:

  Figure 1 a skate body with tubular structure

  surface, seen from the side of the rollers; Figure 2 the skate body with the sole, seen in perspective (and from the side of the running surface); Figure 3 a sectional view along III-III, of the skate body of Figure 1; Figure 4 the shoe sole, viewed from the side of the running surface; Figure 5 the body of the shoe assembled with the sole, seen in section along the V-V cutting lines indicated

in Figures 3 and 4.

  The tubular skate body 1 in

  cast aluminum, shown in Figures 1 to 5, is for

  seen from axes to Silentblocs 1.1. It comprises a support plate 1.5 with orifices 1.2 to 1.4 and a sleeve 4 as well as tubes, 6 and crosspieces 7, 8. The skate body is provided with an envelope constituted by a layer of rubber 2 fixed by vulcanization on its surface. A recess 3 is provided in the rubber layer 2 to receive a nut 30. The shoe body 1 is entirely covered by the rubber layer 2, except at the location of the front faces 4.1 and 4.2 of the sleeve 4 and the external faces 9 of the crosspieces 7 and 8. This homogeneous rubber layer 2 covers the tubes 5 and 6, the crosspieces

  7 and 8 which are linked to these tubes and the bottom 10 of the body of pa-

  tin. The sole 20 of the skate is structured so as to marry

  the shape of the bowl-shaped recess 11 thus produced.

  A layer of bearing rubber 25 is added by vulcanization.

  nisation on a plate 21 made of sheet steel and also covers

  ment the head 22 of a screw 23, welded with said plate.

  For the mounting of the sole 20 or else of a steel clamp which has not been shown, the part considered is put in place as indicated in FIG. 2, on the skate body with tubular structure 1 and we screw it with

the nut 30.

  With this screwing, the plate 21 is placed

  with an approximately regular pressure against the rubber layer 2.1, and this slightly deforms by

  crushing. As seen in Figure 5, a space li-

  bre 12 is provided between the front face 4.1 of the sleeve and the plate 21, this space can be used for compression

rubber.

  To obtain security for securing the

  pad 20, after repeated dismantling and reassembly,

  it is therefore not necessary, thus, to provide for some provision

  additional braking for the elements of the assembly

  screwed 23, 30. What is also important is that to realize

  For a durable fixing, just one screwed connection point is enough. In addition to the rubber layer 2.1 applied to the face of the skate body which faces the surface of

  bearing, we can also provide a rubber layer on the

  that of the plate of the sole, which is on the side of the skate body, this layer of rubber then bears directly on

cast aluminum.

  The invention also provides for the possibility of applying the rubber layer on the skate body of the

  side of the running surface and also said layer of rubber

  tchouc on the rear face of the plate of the sole. We have

  thus two layers of rubber pressed against each other.

  Depending on the applications envisaged, the skate body with a tubular structure 1 can also be made of steel

  molded, or with steel elements assembled by welding.

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Claims (6)

R E V E N D I C A T I O N S   1. - Skate body with tubular structures, with a sole with screw fixing added by vulcanization on a sheet metal plate, characterized in that the body of the skate (1, 1.5) has a recess on the side of the rolling surface (11) delimited by the bottom (10) of the skate body and the tubes (5, 6), that in this recess (11) is embedded with conjugation of the shapes a sole! 20) whose structure   adapts to the shape of the skate body facing the road surface   Lement and that between the plate (21) of the sole <20) and the body of the shoe is disposed a layer of rubber (2) fixed by vulcanization to the shoe body tubular structure or the plate (21) of the sole.   2. - skate body according to claim 1, characterized in that at the ends of its tubes (5, 6) the skate body has cross members (7, 8) which define the recess (11) on the sides , the sole (20) resting, with conjugation of the shapes and insertion of the rubber layer on these crosspieces (7, 8) and on the surface of the tubes (5, 6) which   is opposite the running surface.   3. - Skate body according to all the resales   dications 1 and 2, characterized in that the layer of rubber   tchouc (2, 2.1) is fixed by vulcanization on said skate body. 1 4. - skate body according to claim 1, characterized in that the rubber layer (2.1) is several times thicker in the recess (11) than on the surface areas of the tubes (5, 6) which are facing the running surface, and that between the plate (21) and the front face (4.1) of the sleeve (4) there is provided a free space (12)   to allow some crushing of the rubber.   5. - Skate body according to all the resales   dications 1 and 3, characterized in that the entire skate body is coated with rubber, except for the   area of the screw connection (4.1, 4.2, 30) and external surfaces rails (9) of the crosspieces (7, 8).   6. - Skate body according to all resales   dications 1 and 3, characterized in that the bottom (10) 7 2494658   has orifices (1.2, 1.3, 1.4) so that the rubber passes through said bottom right through, from the face which is on the side of the rollers to that which is on the side of the surface of rolling.   7. - Skate body according to claim t, characterized in that the plate (21) of the sole (20) has a cup-shaped structure, with curved zones   corresponding to the tubes (5, 6) and trapezoidal areas   the corresponding to the sleepers (7, 8).