FR2792846A1 - Articulated mounting frame assembly for an inline skate boot and chassis assembly, comprises of a rotating toe mounting and a heal linkage assembly - Google Patents

Abstract

The boot section (103) of the skate is mounted to a pivoting toe mounting (104) that is mounted to the chassis (102) of the skate. The heal of the boot is connected to the chassis via upper (133) and lower (132) links that are joined via pivot (112) to one another and to the boot and chassis respectively.

Description

ONLINE WHEELS

  ARTICULATED UPPER PLATE TYPE

  The present invention relates to an inline skate of the type comprising a chassis of which a longitudinal lower part carrying the wheels is surmounted by a plate intended for the fixing of a shoe and which is articulated angularly with respect to the chassis, to allow the heel lift of the shoe while skating so

  that nothing prevents the smooth running of the foot.

  A skate of this type is known from French patent No. 2,659,534 filed by the plaintiff, and which relates to a shoe skate assembly, in which the shoe comprises means for locking and connecting the latter, complementary to corresponding means. of the skate, so as to ensure the locking and articulation of one relative

  to the other at the front end of the shoe.

  It is in fact the shoe which is fully articulated with respect to an adapted zone of the skate which remains to it

fully fixed.

  This patent also describes means for guiding the shoe with respect to the shoe, which are constituted by at least one guide edge integral with the shoe plate, and by at least one complementary groove made in the underside of the sole of the shoe. shoe at least in his

rear part.

  We understand that such a design requires a specific shoe, suitable for this type of skate

  particular, and cannot have any other adaptation.

  In addition, if the shoe is effectively guided as it returns to a low position bringing it into contact with the plate of the skate, on the other hand in the high position, corresponding to the supply of a thrust force, the shoe is only slightly guided, if not at its end portion

  before, which makes the whole less coherent.

  It is also described in international patent application WO 96/37269 a shoe and skate assembly having connecting means allowing the articulation of

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  relative to each other in an anterior area of the sole. In this case, as in the previous one, the articulation is arranged above the frame of the skate, which has the disadvantage of raising the shoe, which increases the overall size. In addition, the fact of moving the center of convergence of the forces provided, constituted by the articulation axis, away from the wheels, reduces the thrust force exerted during skating and is detrimental to obtaining an optimum speed. The construction of WO 96/37209 is by

elsewhere very complicated.

  The object of the present invention is to remedy the above drawbacks and to propose an improved articulated skid construction allowing control and transmission.

  optimum efforts compatible with a speed skate.

  One of the objectives of the invention was also to seek an ideal positioning of the articulation axis, making it possible to remedy the aforementioned drawbacks, while eliminating the various constituent elements of the skid, so that these do not constitute obstacles to the

  in place of said ideally determined axis of articulation.

  To this end, the invention relates to an in-line roller skate of the type comprising a chassis of which a longitudinal lower part carrying said wheels is surmounted by a plate intended for the attachment of a shoe, and which is articulated angularly relative to the chassis to allow the heel of the shoe to be raised during skating, characterized in that the plate is articulated around an articulation axis extending parallel to the axis of the wheels in a front zone of the chassis, and whose positioning along a point "P" is defined on the ordinate according to a height "h" of value less than that between the horizontal axis "a" of the wheels and the apex "b" of these, and on the abscissa according to a distance "D" from the vertical axis "c" of the front wheel towards the rear, the value of which is a compromise with the value "h", for determining the ideal position of point "P" with respect to to the shoe, so as not to p revoke an elevation of said plate o of the shoe, in the low position, corresponding to a phase of

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  glides, while allowing the development of maximum force

  during the pushing phase, and better skate control.

  The present invention also relates to

  characteristics which will emerge during the description

  which will follow, and which should be considered in isolation or

  according to all their possible technical combinations.

  This description given by way of nonlimiting example,

  will make it easier to understand how the invention can be realized with reference to the accompanying drawings in which: Figure 1 shows in side view an articulated pad

according to the invention.

  Figure 2 is a top view according to Figure 1.

  Figure 3 is a rear perspective view of a skate

according to Figures 1 and 2.

  Figure 4 is a view of a profile of an extruded frame

  according to a particular embodiment.

  Figure 5 is a sectional view of an extruded frame according to another embodiment on which have been

  shown axes of articulation of the plate.

  Figure 6 is a longitudinal sectional view of a

  plate according to the embodiment of Figures 1 to 3.

  Figure 7 is a schematic cross-sectional view of a frame and an articulated plate connected together by a

energy booster system.

  Figures 8 and 9 partially show in cross section a plate and a frame between which are interposed damping means respectively

  shown before and after compression.

  Figure 10 is a system recall energy curve

  interposed between the plate and the chassis.

  The shoe 1 generally designated in the figures comprises a chassis 2, a longitudinal lower part of which said wheels 3 is surmounted by a plate 4 intended for the attachment of a shoe (not shown), and which is articulated angularly relative to the chassis 2 to allow the heel of the shoe to be raised during skating. The frame 2 consists of two side flanges 2a, 2b connected

  by at least one upper transverse wall 2c.

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  According to a first characteristic of the invention, the plate 4 is articulated around an articulation axis 5 extending parallel to the axis of the wheels 3 in a front zone AV of the chassis 2, and whose positioning according to a point "P" is defined on the ordinate according to a height "h" of value less than the distance "h '" between the horizontal axis of rotation "a" of the wheels 3 and the apex "b" of these, c' that is to say the radius of the wheels, and on the abscissa along a distance "D" measured from the vertical axis "c" of the front wheel 3 'towards the rear AR, the value of which constitutes a compromise with the value "h", for determining the ideal position of point "P" relative to the shoe, so as not to cause an elevation of said plate 4 o of the shoe, in the low position, corresponding to a phase glide, while allowing the development of maximum force during the pushing phase, and better control of the skate. Preferably but not limited to, the value of the distance "D" from the axis of the front wheel 3 'to the point

  "P" is between 55 and 95 mm.

  Ideally, the value of this distance "D" is 75 min. Regarding the height "h" of point "P", its value is less than or equal to 47 mm, but ideally it

is equal to 35 mm.

  According to another characteristic of the invention, the axis XX ′ of the metatarsophalangeal joint of the foot of a skater forming an angle a substantially of 72 relative to the longitudinal axis YY ′ of the skate 1, the distance " of "average of this axis XX 'towards the rear AR from the axis of articulation 5 of

  plate 4 has a value less than or equal to 45 mm.

  Preferably, the value of the distance "d" is

around 25 mm.

  According to a preferred embodiment constituting another characteristic of the skate, the hinge pin 5 of the

  plate 4 on the chassis is divided into two or half parts

  axes 5A, 5B, secured independently of one another, of two lateral flanges 2a, 2b of the chassis 2. Such a construction makes it possible to overcome the problem of passage of the

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  wheels 6 between said flanges and therefore to lower the

position of the hinge pin.

  In fact, as shown in FIG. 5, each of the two axis parts 5 is formed by a pin whose cylindrical body 5A, 5B passes through a through hole 4a, 4b corresponding to a lateral cheek 4A, 4B of the plate 4, to allow the latter both its articulation and its support on the chassis 2. Said pin 5A, 5B comprises a head 5Aa, 5Ba applying to the external face of a corresponding cheek 4A, 4B of the plate 4, its opposite end Ab and 5Bb being threaded to be screwed into a threaded hole 6, 7 produced in an internal zone of said flange 2a, 2b of the chassis

  2, forming a localized excess thickness A-B.

  As shown in Figure 4, the frame 2 can be constituted by a profile obtained by extrusion, the extra thicknesses A-B then being provided in the original extruded profile, as well as horizontal walls 8-9 stiffening. The extra thicknesses A-B can also be

  reported using appropriate inserts.

  According to another advantageous characteristic of the invention, the body 5A, 5B of each pin passes through the corresponding cheek 4A, 4B of the articulated plate 4 by means of a self-lubricating ring 10A, 10B being housed in a through hole 4a , 4b associated, said ring 10A, lOB comprising at one of its ends a head lOAa, lOBa in the form of a collar intended to be housed between the internal face of the cheek 4A, 4B of the plate 4 and the external face of the flange corresponding 2a, 2b of the chassis 2, so as to reduce the

  coefficient of friction of the joint 5.

  Furthermore, the articulated plate 4 has a general U-shaped section covering the flanges 2a, 2b of the chassis 2 from the outside, so as to allow permanent guiding of the plate 4 throughout its pivoting according to a deflection.

angular a1.

  I1 is thus obtained better guidance of the plate during its movement, while improving the solidity of the assembly.

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  Preferably, the plate 4 is articulated on the chassis 2 according to an angular movement al of an equal value

or less than 20.

  Ideally, the angular deflection al of the plate 4 is substantially 100. Of course, other angular deflection values can be provided depending on the type

of skating sought.

  Also, the plate 4 hinging on the chassis 2 by its articulation axis 5, disposed in a front zone AV, comprises in a rear zone AR, permanent lateral guide means relative to the chassis 2, so as to obtain good transmission of thrust forces and

  help stiffen the chassis 2.

  These rear guide means of the articulated plate 4 with respect to the chassis 2 are constituted by two slots 11, 12 produced on each of the side cheeks 4A, 4B of the plate 4, and which are capable of sliding on two pins 13 arranged laterally from on either side of an upper part of the chassis 2 at the rear thereof, which pins also act as a stop and limit the travel

at a predetermined angle al.

  According to an improvement of the invention, the lateral guidance of the plate 4 relative to the chassis 2 is effected by means of self-lubricating inserts 14, 15 arranged on the external faces of the flanges 2a, 2b of the chassis 2 in a zone upper part thereof and which are interposed between these and the internal faces of the cheeks 4A, 4B of the plate

articulated 4.

  By way of nonlimiting example, the self-lubricating inserts 14 and 15 can be made of Delrin or Teflon. According to another characteristic of the invention, particularly clearly visible in FIGS. 8 and 9, damping means 16 and 17 are arranged between a transverse upper wall 2c of the chassis 2 and a corresponding internal wall of the articulated plate 4, of way to mitigate

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  the impact of the latter's return with chassis 2, in

skating lessons.

  More specifically, the damping means 16 and 17 consist of elastically deformable studs, fixedly disposed in housings 18 and 19 produced in the upper transverse wall 2c of the chassis 2, and of which protrude said studs 16 and 17 according to values in relation to their dimensioning, so that from a predetermined compression threshold the plate 4 and the chassis 2 are in contact

  with each other to transmit the pushing force.

  According to another characteristic of the invention, the plate 4 comprises in a central upper zone a plurality of transverse stiffening elements 20 extending essentially in the vertical direction and therefore contributing to

  increase the stiffening of the plate in this direction.

  Also, the plate 4 comprises in an upper front front and rear AR area two series of oblong transverse lights 21 and 22 intended for fixing the boot according to several possibilities, both in one direction of adjustment

transverse than longitudinal.

  Preferably, both the base frame 2 and the plate 4 are obtained by extrusion, according to a profile

  predetermined integrating their different functions.

  This construction method is particularly advantageous, such as for example with regard to the production of extra thicknesses A and B inside the flanges of the chassis 2 intended for screwing the hinge pins 5A, 5B, after

  thread recovery, as mentioned above.

  Of course, both the chassis 2 and the plate 4, these can also be obtained by injection, for example of magnesium, the important thing also being to obtain a lightness

  maximum of the assembly for a rigidity also maximum.

  According to another characteristic of the invention, the plate 4 comprises a return energy system which is constituted by elastic means interposed between the chassis 2 and said

plate 4.

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  These return means consist of at least one tension spring 23, the lower attachment point C of which is located on the chassis 2 between two consecutive wheels 3, between a longitudinal line "b" passing through the top of these wheels 3 and a parallel longitudinal line "a" passing through

their axes.

  In fact, as shown in Figures 3 to 7, these springs are two in number arranged parallel to each other. Of course a different number of springs can also be

planned.

  As visible in FIG. 7, the lower attachment point C of the tension spring (s) 23 is constituted by a spacer placed between the internal faces of the flanges 2a, 2b of the chassis 2 and made integral with the latter by two screws 24 , 25 passing through them on either side, so as not to increase the lateral dimensions of the chassis 2, while

contributing to its stiffening.

  We also see in this figure that the springs 23 of the return energy system have upper attachment points E, F. G which are located on the articulated plate 4 and which are constituted by a plurality of spacers E, F , G arranged between the U-shaped cheeks 4A, 4B of said plate 4 and integral with these by two screws 26, 27 passing through them on either side, so as to allow several adjustment values of said springs without increasing the size of the plate 4,

  and while contributing to its stiffening.

  According to another characteristic of the invention also visible in FIG. 7, the attachment spacers C - E, F, G of the return springs 23 arranged on the one hand on the plate 4 and on the other hand on the chassis 2 are connected to each other by a soft link 28, 29 of constant length corresponding to the maximum desired clearance of the plate 4,

  so as to limit its amplitude.

  Advantageously, the soft link 28, 29 forming a stop is

  disposed inside a corresponding return spring 23.

  As shown in Figure 10, the system return energy measurement curve has a value on the ordinate

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  preferably between 2 and 6 Nm and preferably equal to 4 Nm at the origin (angle of 0) and between 4 and 10 Nm

for an angle of 10.

  Ideally, this latter value is 5.5 Nm per 100.

  The curves represent respectively:

  - curve I: curve of an articulated ice skate.

  - curve II: articulated skate for roller skate in

current line.

  - curve III minimum values for roller skating in

line according to the invention.

  - curve IV: optimum values for roller skating in

line according to the invention.

  The realization of an inline skate as described above offers the main advantage of allowing elongation

the stride of a skater.

  Another advantage is the transmission of forces

  can be performed continuously throughout the skate.

  We can also cite the extremely advantageous rigidity / mass ratio, close to a traditional chassis, of the stiffening elements E, F, G, 20; 8, 9, C being provided both on the plate 4 and on the chassis 2 in three

different axes.

  Such a skate also makes it possible to mount shoes with a traditional sewn upper that can be attached directly to the

platinum.

  The settings are identical to those of a traditional chassis. Also note that the ideal position of point "P" corresponding to the hinge axis 5 of the plate 4 on the chassis 2 allows compatibility of the system with a wheeled chassis, since the hinge axis "P" can be positioned neither too much at the front, nor too much at the rear, because it does not cross the area of the passage of the wheels and can therefore overcome the position thereof. Indeed, an axis too much at the front would make the engagement of the plate too hard, while an axis located too much at the rear would make the engagement too fast. The position of the suspension struts C of the return springs

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  23 between two wheels 3 makes it possible to arrange these inside the chassis and therefore not to cause the shoe to be raised. 11i 2792846

Claims (28)

  1. In-line roller skate of the type comprising a chassis (2) of which a longitudinal lower part carrying said wheels (3) is surmounted by a plate (4) intended for the attachment of a shoe (not shown), and which s hinges angularly with respect to the chassis (2) to allow the heel of the shoe to be raised during skating, characterized in that the plate (4) is articulated around an axis of articulation (5) extending parallel to the axis of the wheels (3) in a front zone (AV) of the chassis (2), and the positioning of which according to a point "P" is defined on the ordinate according to a height "h" of value less than that between l 'horizontal axis "a" of the wheels (3) and the vertex "b" of the latter, and on the abscissa at a distance "D" from the vertical axis "c" of the front wheel (3') towards rear (AR), the value of which is a compromise with the value "h", for determining the ideal position of point "P" with respect to the shoe, so as not to cause an elevation of said plate (4) o of the shoe, in the low position, corresponding to a sliding phase, while allowing the development of a maximum force in the phase of   thrust, and better skate control.   2. Skate according to claim 1, characterized in that the value of the distance "D" from the point "P" is included between 55 and 95 mm.   3. Skate according to claim 2, characterized in that   the value of the distance "D" is 75 mm.   4. Skate according to claim 1, characterized in that the value of the height "h" of the point "P" is equal to or less than 47 mm.   5. Skate according to claim 4, characterized in that   the value of the height "h" is equal to 35 mm.   6. Skate according to one of claims 1 to 5,   characterized in that the axis XX 'of metatarsal articulation   phalangeal foot of a skater is distant "d" from the axis 12 2792846   articulation (5) of the plate (4) towards the rear (AR) of a   value less than or equal to 45 mm.   7. Skate according to claim 6, characterized in that   the value of the distance "d" is 25 mm.   8. Skate according to one of claims 1 to 7,   characterized in that the articulation axis (5) of the plate (4) breaks down into two parts, secured independently of one another, of two lateral flanges (2a, 2b) of the chassis (2. 9. Skate according to claim 8, characterized in that each of the two axis parts (5) is formed by a pin whose cylindrical body (5A, 5B) passes through a through hole (4a, 4b) corresponding to a lateral cheek (4A, 4B) of the plate (4), to allow the latter both its articulation and its support on the frame (2), said pin (5A, 5B) comprising a head (5Aa , 5Ba) applying to the external face of a corresponding cheek (4A, 4B) of the plate (4), its opposite end (5Ab and 5Bb) being threaded to be screwed into a threaded hole (6, 7) made in an internal zone of said flange (2a, 2b) of the chassis (2), forming a localized excess thickness (A-B).   10. Skate according to claim 9, characterized in that the body (5A, 5B) of each pin passes through the corresponding cheek (4A, 4B) of the articulated plate (4) by means of a self-lubricating ring (10A, lOB) being housed in the through hole (4a, 4b), said ring (10A, lOB) comprising at one of its ends a head (lOAa, lOBa) in the form of a collar intended to be housed between the internal face of the cheek (4A, 4B) of the plate (4) and the external face of the corresponding flange (2a, 2b) of the frame (2), so as to reduce the coefficient of friction of the joint (5).   11. Skate according to one of the preceding claims,   characterized in that the articulated plate (4) has a general U-shaped section covering from the outside the flanges (2a, 2b) of the frame (2), so as to allow permanent guidance of the   plate (4) throughout its angular movement (al). 13 2792846   12. Skate according to one of the preceding claims,   characterized in that the plate (4) is articulated on the chassis (2) according to an angular clearance (al) of a value equal to or less than 20.   13. Skate according to claim 12, characterized in that the angular movement (c1) of the plate (4) is substantially from 100.   14. Skate according to one of the preceding claims,   characterized in that the plate (4) articulated on the chassis (2) by its articulation axis (5), disposed in a front zone (AV), comprises in a rear zone (AR), guide means lateral permanent with respect to the chassis (2). 15. Skate according to claim 14, characterized in that the rear guide means of the articulated plate (4) relative to the frame (2), are constituted by two lights (11, 12) produced on either side of the lateral cheeks (4A, 4B) of the plate (4), forming its U-shaped section, and which are capable of sliding on two pins (13) arranged laterally on either side of an upper part of the chassis (2) , which pawns also play a role of limiter   travel at a predetermined angle (al).   16. Skate according to claim 14 or 15, characterized in that the lateral guidance of the plate (4) relative to the frame (2) is effected by means of self-lubricating inserts (14, 15) arranged on the faces external of the flanges (2a, 2b) of the frame (2) in an upper zone to be interposed between these and the internal faces of the cheeks   (4A, 4B) of the articulated plate (4).   17. Skate according to one of the preceding claims,   characterized in that damping means (16 and 17) are arranged between a transverse upper wall (2c) of the frame (2) and a corresponding internal wall of the articulated plate (4), so as to attenuate the impact of back from   the latter with the chassis (2), during skating.   18. Skate according to claim 17, characterized in that the damping means (16 and 17) are constituted by 14 2792846   elastically deformable studs, fixedly disposed in housings (18 and 19) produced in the upper transverse wall (2c) of the chassis (2), and from which protrude said studs (16 and 17) according to values related to their dimensioning, so that from a predetermined compression threshold the plate (4) and the frame (2) are in   contact with each other to transmit the pushing force.   19. Skate according to one of the preceding claims,   characterized in that the plate (4) comprises in a central upper zone a plurality of stiffening elements transverse (20).   20. Skate according to one of the preceding claims,   characterized in that the plate (4) comprises in an upper front (AV) and rear (AR) zone two series of oblong transverse slots (21 and 22) intended for fixing the shoe according to several possibilities, both in one direction of   transverse than longitudinal adjustment.   21. Skate according to one of the preceding claims,   characterized in that both the base frame (2) and the plate (4) are obtained by extrusion, according to a profile   predetermined integrating their different functions.   22. Skate according to any one of claims   previous, characterized in that the plate (4) comprises a return energy system which is constituted by elastic means interposed between the frame (2) and said plate (4). 23. Skate according to claim 22, characterized in that the elastic return means consist of at least one tension spring (23) whose lower attachment point (C) is located on the frame (2) between two wheels consecutive (3), between a longitudinal line "b" passing through their apex and a parallel longitudinal line "a" passing through their axes.   24. Skate according to claim 23, characterized in that the lower attachment point (C) of the tension spring (s) (23) is constituted by a spacer disposed between the internal faces of the flanges (2a, 2b) of the chassis ( 2) and 2792846   made integral with these by two screws (24, 25) passing through them on either side, so as not to increase the lateral size of the chassis (2) while contributing to its stiffening.   25. Skate according to one of claims 22 to 24,   characterized in that the springs (23) of the return energy system have upper attachment points (E, F. G) which are located on the articulated plate (4) and which consist of a plurality of spacers arranged between the U-shaped cheeks (4A, 4B) of said plate (4) and integral with these by two screws (26, 27) passing through them on either side, so as to allow several adjustment values of said springs without increasing the size of the plate (4) and while contributing to its stiffening.   26. Skate according to one of claims 24 or 25,   characterized in that the attachment spacers (C - E, F, G) of the return springs (23) arranged on the one hand on the plate (4) and on the other hand on the frame (2) are connected auxiliary between them by a soft link (28, 29) of constant length corresponding to the maximum desired travel of the   plate (4), so as to limit its amplitude.   27. Skate according to claim 26, characterized in that the soft link (28, 29) is arranged inside a spring corresponding reminder (23).   28. Skate according to one of claims 22 to 27,   characterized in that the measurement curve of the return energy of the system has on the ordinate a value comprised optimally between 2 and 6 Nm at the origin and comprised between 4 and 12 Nm for an angle of 10.