• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention describes a removable skateboard assembly, comprising a base part (1) configured to be fixed to a board (40); an upper part (7) configured to be removably attached to a wheel unit (36), the base part (1) being coupled to the upper part (7) in such a way that they can rotate with respect to each other; and a torsion spring (6) disposed between the base part (1) and the upper part (7) to exert a force tending to cause them to recover a neutral position. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2546702A1
    申请号:ES201530827
    申请日:2015-06-15
    公开日:2015-09-25
    发明作者:Juan José MARTÍNEZ ALMANSA；Luis PARRAS ANGUITA
    申请人:One Go Technologies S L；One Go Technologies Sl；
    IPC主号:
    专利说明:

    DESCRIPTION

    Detachable skateboard set

    FIELD OF THE INVENTION 5

    The present invention describes a set that can be mounted between the board and the front wheel unit of a traditional skateboard in order to improve its maneuverability to turn it into a surf-skate.
      10
    BACKGROUND OF THE INVENTION

    A traditional skateboard, also called skate or skateboard, consists essentially of a board, usually of wood, to which four are fixed couple wheels used to practice the called sport skateboarding The wheels are grouped into two units of 15 two wheels each whose axle is secured with a flexible rod slightly inclined in relation to the board, which allows turning by tilting the board to one side or the other, and the smooth turning movement of the axes involved.

    US patent US6056302 by Marc Smith describes an example of a wheel unit 20 for a skateboard of the traditional type. As can be seen in the figures, the unit is formed by a base fixed to the table and which is attached to the wheel axle by means of a rod that passes through bushings. This configuration allows the appearance of a slight inclination of the wheels in relation to the table when the user leans on one or the other side of said table, which allows smooth turns in the direction of travel. 25

    Recently, a new type of skateboard called “surf-skate” has appeared. The difference between a traditional skateboard and a surf-skate is mainly in the type of front wheel unit used. The front wheel unit of a surf-skate is configured to allow much greater maneuverability than that of a traditional skateboard, and it is also equipped with a centering spring that exerts an action on the wheels intended to return them to their neutral position. A surf-skate has a behavior very different from that of a conventional skateboard, allowing the user to simply push himself by performing oscillatory hip movements similar to those carried out in surfing.
     35
    The US6793224 patent of Carver Skateboard shows an example of a wheel unit for a surf-skate. This unit comprises a base attachable to the bottom of a table and an arm coupled to the base that rotates relative to it around a first axis. A rod having a pair of wheels mounted at opposite ends is fixed to said arm and is rotatable relative to it around a second axle. A compression spring connected between the base 5 and the arm limits the rotation movement of the arm and returns it to a central position aligned with the direction of the surf-skate in motion.

    Although the use of this type of wheel unit greatly increases the maneuverability of a surf-skate with respect to that of a traditional skateboard, its turn remains somewhat insufficient. 10 In addition, it is necessary to separate it enough from the board by means of spacers to prevent the wheel from hitting the board. Finally, the construction of the unit is complicated, and that makes maintenance and repair operations difficult to perform.

    BRIEF DESCRIPTION OF THE INVENTION 15

    The present invention describes a new set configured for attachment to a traditional skateboard in order to convert it into a surf-skate. Indeed, the removable assembly of the invention is intended to be mounted between the board and the front wheel unit of a traditional skateboard so as to, without modifying the original wheelbase, provide it with a much greater turning capacity and maneuverability. In addition, increasing the distance between the board and the front wheel unit avoids the problem of the wheels hitting the board when very tight turns are made.

    The detachable skateboard assembly of the present invention essentially comprises the following elements:

    a) A base piece configured for detachable attachment to a table. As will be described later in this document, the fixation can be done by screws, bolts or the like. 30

    b) An upper part configured for detachable attachment to a wheel unit, the base part being coupled to the upper part so that they can rotate with respect to each other. The use of a type of detachable attachment to both the board and the wheel unit allows the assembly of the invention to be installed or uninstalled.
    at any time to significantly modify the behavior and maneuverability of the skateboard, moving it from conventional skateboard to surf-skate and vice versa.

    c) A torsion spring arranged between the base piece and the top piece to exert a force tending to make them recover a neutral position. This torsion spring 5 replaces the compression spring commonly used, which provides the advantages of greater compactness of the assembly and greater protection of the spring against dirt and foreign elements.

    This configuration is advantageous in relation to the sets normally used in a surf-10 skate for several reasons. In order to explain the advantages in relation to the axle assemblies of the prior art, reference will now be made to document US6793224 of the company Carver Skateboard, which describes an axis set for surf-skate reference in this field. As can be seen, the advantages of the removable assembly of the present invention in relation to the so-called "Carver axis" described in US6793224 are essentially three.

    First, the assembly of the present invention is removable, in the sense that it can be mounted between the board and the wheel unit of a traditional skateboard to convert it into a surf-skate in a simple way, and then disassembled to return to a configuration 20 corresponding to the traditional skateboard. To do this, simply unscrew the conventional wheel assembly of a traditional skateboard, fix the base part of the assembly of the present invention in place, and then fix the conventional wheel unit that had been disassembled to the upper part of the present invention. previously. These operations, which can be carried out in just a few minutes, radically modify the behavior of the traditional skateboard 25 to turn it into a surf-skate.

    Specifically, to allow fixing the wheel unit to the removable assembly of the present invention, the upper part preferably comprises a flat surface intended for fixing the wheel unit. As will be described later, this flat surface may comprise holes for fixing the wheel unit.

    As regards the fixing of the removable assembly of the present invention to the table, preferably the base part comprises a flat surface intended for fixing the table. As will be seen later in this document, this surface may comprise holes 35 for fixing the table.
    In contrast, the axle assembly described in US6793224 constitutes a compact unit from which it is impossible to separate the wheel unit. This axle assembly cannot be fixed between the board and the wheel assembly of a conventional skateboard, but is already marketed already fixed, or intended to be fixed, to a board from which it is only separable in a unit manner including the wheel unit. This set can be installed on one or another board, but 5 will always result in a surf-skate, never a traditional skateboard.

    Secondly, the assembly of the present invention employs a torsion spring instead of the compression spring used in the Carver axis. In both cases, the function of the spring is to act on the base and upper parts to make them align according to a neutral position 10 corresponding to the rectilinear displacement of the skateboard when no effort is exerted on them. However, although the functions of the spring are the same, the use of a torsion spring has several advantages in relation to a compression spring.

    The set is more compact with the use of a torsion spring, and therefore simpler, more robust, easier to assemble, and less prone to breakdowns.

    In addition, the stress behavior of a torsion spring is more progressive than with a compression spring, which causes the surf-skate movement to be much more continuous and smooth. twenty

    On the other hand, as described below, the torsion spring can be placed in a cavity completely protected from the outside to prevent the entry of dirt or foreign elements that may affect its behavior.
     25
    In fact, although the torsion spring can in principle be arranged in different ways in the assembly of the present invention, it is preferably housed in an essentially cylindrical cavity formed between a first flange of the base piece and a second flange of the fitting top piece. inside said first flange. The torsion spring is hidden from view encased between both flanges, thereby protecting it against water, dust, or other foreign elements.

    The fixing between the spring and the base and upper parts can also be carried out in different ways, although preferably a first pin of the torsion spring is coupled to a first hole of the base piece and a second pin of the torsion spring is coupled to a second hole of the upper part. In order to prevent the pins from getting out of
    said holes, the base piece can comprise an auxiliary hole perpendicular to the first hole for fixing the first pin of the torsion spring and the top piece can comprise an auxiliary hole perpendicular to the second hole for fixing the second pin of the torsion spring . These auxiliary holes allow the insertion of bolts, screws or the like that trap the pins of the torsion spring to fix it perfectly between the base piece and the top piece 5, avoiding any type of slack.

    In addition, preferably the base part comprises a stop that cooperates with another stop of the upper part to limit the angle of rotation between the base part and the upper part. These stops limit the relative rotation that can occur between the base piece and the top piece, impacting when the limit is reached to prevent greater turning angles. Specifically, according to another preferred embodiment of the invention, the top of the base piece and the top of the top piece are arranged such that they allow a rotation of between 40 ° and 50 ° on each side of the neutral position, more preferably a angle of essentially 45º. This angle of rotation contrasts with the angle of rotation that allows the Carver axis, smaller, so that the maneuverability of surf-skate is increased considerably.

    Third, the assembly of the present invention is easier to assemble and disassemble than the Carver axle described in US6793224, since the assembly of the present invention preferably uses a single nut for fixing all the elements that comprise it. . 20 Specifically, according to a preferred embodiment of the present invention, the rotary coupling between the base piece and the upper part comprises a lower axial bearing located between the base part and the upper part, an upper axial bearing located between the upper part and a single locking nut of the assembly, and a bolt that passes through the base piece, the lower axial bearing, the torsion spring, the upper part and the upper axial bearing 25, rotating the upper part relative to the base part around said bolt.

    Thus, to access any element of the assembly it is not necessary to separate it from the board or the wheel unit to which it is mounted, but simply remove the lock nut. This allows the base part to be separated from the upper part and to remove all internal parts 30 from the assembly.

    In addition, according to another preferred embodiment, the bolt is fixed to the base piece by screwing. This avoids the use of an additional nut like the one used in the Carver shaft, making assembly and disassembly of the assembly as easy as possible. 35

    On the other hand, the whole of the present invention has the advantage that it allows to change in a simple way the torsion spring housed in the cavity, which makes it possible to modify the behavior of surf-skate. Indeed, it is enough to remove the fixing nut and remove the upper part to access the cavity where the torsion spring is located, which can thus be changed to another with a different wire diameter. A spring with a smaller diameter of 5 wire has a more gentle stress behavior curve, while a spring with a larger wire diameter has a more aggressive curve. Therefore, by providing a set of springs of different wire diameters, the user is given the possibility of modifying the behavior of surf-skate to their liking.
     10
    On the contrary, the Carver axis allows to regulate the effort generated by its compression spring by means of an adjustment screw. However, the range of such regulation is not very high and therefore does not allow much modification of surf-skate behavior.

    Accordingly, the present invention is also directed to a set of parts formed by: a detachable assembly as described above; and a set of torsion springs with different wire diameters.

    DESCRIPTION OF THE FIGURES
     twenty
    Fig. 1 shows an exploded perspective view of an example assembly according to the invention.

    Figs. 2A-2B respectively show a top view of the assembly and a section along its symmetry plane A-A. 25

    Figs. 3A-3B show each section along the plane of symmetry of the base piece seen respectively from above and from below.

    Figs. 4A-4B show each section along the plane of symmetry of the upper part 30 seen respectively from above and from below.

    Figs. 5A-5C respectively show a bottom view of an assembly according to the invention fixed to a traditional wheel unit, a section along its symmetry plane A-A, and a perspective view of said assembly and of the traditional wheel unit. 35

    Figs. 6A-6C show different views of the assembly of the invention fixed to a traditional wheel unit and a board.

    Figs. 7A-7B respectively show a view of the assembly of the invention with the torsion axis in neutral position and a complete view of the assembly of the invention fixed to a traditional 5-wheel unit and to a table where the torsion axis is in neutral position.

    Figs. 8A-8B respectively show a view of the assembly of the invention with the torsion axis in the most open position and a complete view of the assembly of the invention fixed to a traditional wheel unit and a table where the torsion axis is in the position More open. 10

    DETAILED DESCRIPTION OF THE INVENTION

    Fig. 1 shows an exploded view of an example of a removable assembly according to the present invention. The base piece (1), which in this example is obtained by cast aluminum 15 by gravity with subsequent heat treatment, is fixed by thread to the lower end of a steel bolt (2) with thread at each of its ends. This bolt (2) constitutes the axis of rotation around which the upper part (7) rotates thanks to an axial needle bearing system arranged around said bolt (2). In particular, the bearing system is formed by two washers (3) and an axial needle bearing (4), and is arranged between the base piece 20 (1) and the upper part (7) to allow the second to rotate Regarding the first.

    The torsion spring (6) is arranged around the axial needle bearing system. As can be seen in greater detail in later figures, the torsion spring (6) is located at the bottom of an essentially cylindrical cavity formed by a first cylindrical flange (50) of the base piece (1) and is fixed thereto. thanks to a first hole (14) that receives a torsion spring pin (6). An auxiliary hole (13) perpendicular to the first hole (14) allows the insertion from the outside of the assembly of a threaded fixing bolt (5) that prevents the exit of the torsion spring pin (6). The cavity is completed with the insertion of a second cylindrical flange (51) of the upper part (7) inside the first flange (50) of the base piece (1) up to 30 which rests on the bottom. Between both flanges (50, 51) an essentially cylindrical closed space or cavity is generated that protects the torsion spring (6) against the entry of dirt and foreign elements. Moreover, this cavity formed by the first flange (50) of the base piece (1) in combination with the second flange (51) of the upper part (7) not only houses the torsion spring (6) but also the first axial bearing system, which is thus also protected. The torsion spring (6) is fixed to the upper part (7) by means of the
    insertion of another pin in a second hole (28). An auxiliary hole (27) perpendicular to the second hole (28) allows the insertion of a bolt for fixing the torsion spring pin (6).

    The upper part (7), also obtained by cast aluminum by gravity with subsequent heat treatment, rotates around a bronze bearing (8) to which it is pressurized and whose function is to limit friction during rotation. For assembly, the bearing (8) is inserted through the upper end of the bolt (2) until it rests on the washer (3). Then, once the upper part (7) has been placed and the torsion spring (6) fixed by means of the threaded bolts (5), a second axial needle bearing system consisting of two other washers (9) 10 and a Axial needle bearing (10) that is inserted through the upper end of the bolt (2) and fixed by a single self-locking nut (11).

    The position of all these elements when the assembly is fully assembled can be seen in the section of Fig. 2A along the plane of symmetry of the complete assembled assembly 15 shown in Fig. 2B.

    Figs. 3A and 3B show two views of a section along the plane of symmetry of the base piece (1). The base piece (1) has a flat surface called base (23) intended to rest on the board (40) of the skateboard for fixing to it. To do this, countersunk screws 20 are introduced through the threaded holes (21) of the base (23) and corresponding holes (37) of the front or nose (38) of the skateboard. The base piece (1) also has a threaded hole (12) located in the center of the first essentially cylindrical flange (50) that will accommodate the torsion spring (6) used to fix the lower end of the bolt (2). The washer (3) of the first axial bearing system rests on a horizontal circular surface (15) 25 at the bottom of the cavity formed by the first flange (50), while the torsion spring (6) sits on a horizontal circular surface (16) of a radius greater than the previous one. This horizontal circular surface (16) has a first vertical hole (14) intended to receive a torsion spring pin (6). A hole (13) perpendicular to said first vertical hole (14) allows the introduction of a bolt (5) to fix the pin. 30

    The base part (1) further comprises a stop (18) protruding from the first flange (50) in order to limit the amplitude of rotation of the upper part (7) relative to the base part (1), such as will be described in greater detail in relation to Figs. 7 and 8. The surface (22) is the front part of the base piece (1) according to the direction of the skateboard movement, and protects the
    inside the cavity of bumps and dirt. The surface (19) is perpendicular to the axis of rotation of the bolt (2). Zone (20) is an empty area to reduce weight.

    Similarly, Fig. 4 shows two views of a section along the plane of symmetry of the upper part (7). There is a flat surface that constitutes the base (25) intended to be supported on an equally flat surface of the traditional wheel unit (36) for fixing thereto. To do this, screws are introduced through the threaded holes (24) arranged in the base (25) and in corresponding holes in the wheel unit (36). The upper part (7) also has a recessed hole (26) intended to receive the bearing (9) under pressure. The sides of said hole (26) constitute the second essentially cylindrical flange (51) which, as mentioned above, is introduced into the first flange (50) of the base piece (1) to protect the spring (6) and the First axial bearing system. The surface (31) of the upper end of the second flange (51) constitutes the support on which the washer (3) of the first axial bearing system sits. The axial spring (6) rests on a circular surface outside said second flange (51) in which is the second hole (28) that receives the spring pin. An auxiliary threaded hole (27) perpendicular to the second hole (28) allows a bolt (5) to be inserted from the outside of the assembly to fix the torsion spring pin (6).

    The surface (29) is a continuation of the base surface (25), although it forms a small angle with it. The surface (33) is on the opposite side of the upper part (7), and is the surface from which the second flange (51) protrudes and where the second hole (28) is located. The surfaces (29, 33) are parallel to each other and perpendicular to the axis of rotation of the bolt (2). The washer (9) of the second axial bearing system rests on the surface (29). The surface (32) is the front part of the upper part (7) and protects the assembly against possible impacts in addition to giving it rigidity. The ribs (34) also give the whole rigidity. The upper part 25 (7) also has a stop (30) protruding from the surface (33) at a certain distance from the second flange (51), in a position corresponding to that of the stop (18) of the part (1) base. The stop (30) of the upper part (7) cooperates with the stop (18) of the base part (1) to limit the angle of rotation of the first relative to the second.
     30
    Fig. 5A shows the assembly fixed to a conventional wheel unit (36) of a skateboard. Fig. 5B shows a detail of the section along the plane A-A of Fig. 5A, and Fig. 5C shows a perspective of both elements not yet joined. As described above, the wheel unit (36) is attached to the base surface (25) of the upper part (7) by means of screws that are introduced in the threaded holes (24) and in the holes (35) of which has the 35 wheel unit (36).
    Fig. 6 shows three views of a skateboard already with the assembly mounted between the conventional wheel assembly (36) of the nose (38) of the skateboard and the board (40). The rear wheel unit (36) located on the tail (39) does not require the installation of the assembly of the invention, so it is recommended to raise it by means of shims so that the nose (38) of the skateboard is not too high. The rear wheel unit (36) exerts a function similar to that of the keel of 5 a surfboard in the transformation of the skateboard into a surf-skate. These figures also show how the original wheelbase of the skateboard is maintained.

    Fig. 7A shows a detail of the assembly with the torsion spring (6) in a neutral position corresponding to a rectilinear displacement of the skateboard. Fig. 7B shows the assembly in 10 the same position already fixed to the table (40) and the wheel unit (36). In this neutral position, no force is exerted on the longitudinal sides of the board (40), and both the stop and the pins of the torsion spring (6) remain in the plane of symmetry aligned with the bolt 2, which It is the axis of rotation.
     fifteen
    Fig. 8A shows a detail of the assembly with the torsion spring (6) in one of the most open positions clockwise. Fig. 8B shows the assembly in the same position already fixed to the table (40) and the wheel unit (36). In this open position of the spring, with a maximum rotation of 45 °, a force F is now exerted on the longitudinal side of the table (40). This causes the upper part (7) to rotate with respect to the bolt (2) until the stop (30) collides with the stop (18) 20 of the base part (1). In all this movement, the torsion spring pins (6) remain fixed respectively to the base part (1) and the upper part (7).

    When the force F is stopped exerting on the longitudinal side of the table (40), the torsion spring returns the accumulated energy and brings the assembly back to its neutral position 25 corresponding to the rectilinear displacement. Alternating the application of force on the sides of the board, simulating the way in which the body moves on a surfboard to cause it to turn on both sides, there will be a forward movement of the surf-skate.
    权利要求:
    Claims (13)
    [1]

    1. Detachable skateboard assembly, characterized in that it comprises:
    a base piece (1) configured for fixing to a table (40);
    an upper part (7) configured for detachable attachment to a 5-wheel unit (36), the base part (1) being coupled to the upper part (7) so that they can rotate relative to each other; Y
    a torsion spring (6) arranged between the base part (1) and the upper part (7) to exert a force tending to make them recover a neutral position.
     10
    [2]
    2. Assembly according to any of the preceding claims, wherein the torsion spring (6) is housed in an essentially cylindrical cavity formed between a first flange (50) of the base piece (1) and a second flange (51) of the upper part (7) that fits inside said first flange, so that the torsion spring (6) is protected from the outside. fifteen

    [3]
    3. Assembly according to any of the preceding claims, wherein a first torsion spring pin (6) is coupled to a first hole (14) of the base piece (1) and a second torsion spring pin (6) it is coupled to a second hole (28) of the upper part (7). twenty

    [4]
    4. Assembly according to claim 3, wherein the base part (1) comprises an auxiliary hole (13) perpendicular to the first hole (14) for fixing the first torsion spring pin (6) and the part (7 ) upper comprises an auxiliary hole (27) perpendicular to the second hole (28) for fixing the second torsion spring pin (6). 25

    [5]
    5. Assembly according to any of the preceding claims, wherein the base part (1) comprises a stop (18) cooperating with another stop (30) of the upper part (7) to limit the angle of rotation between the part ( 1) base and upper part (7).
     30
    [6]
    6. Assembly according to claim 5, wherein the stop (18) of the base piece (1) and the stop (30) of the upper part (7) are arranged in such a way that they allow a rotation of between 40 ° and 50 ° on each side of the neutral position.

    [7]
    7. Assembly according to any of the preceding claims, wherein the rotating coupling between the base part (1) and the upper part (7) comprises a bearing (4)
    lower axial located between the base part (1) and the upper part (7), an upper axial bearing (10) located between the upper part (7) and a single lock nut (11) of the assembly, and a bolt (2 ) that passes through the base part (1), the lower axial bearing (4), the torsion spring (6), the upper part (7) and the upper axial bearing (10), rotating the part (7) upper relative to the base part (1) around said bolt (2). 5

    [8]
    8. Assembly according to claim 7, wherein the bolt (2) is fixed to the base piece (1) by screwing.

    [9]
    9. Assembly according to any of the preceding claims, wherein the upper part (7) 10 comprises a flat surface (25) intended for fixing the wheel unit (36).

    [10]
    10. Assembly according to claim 9, wherein the flat surface (25) comprises holes (24) for fixing the wheel unit (36).
     fifteen
    [11]
    11. Assembly according to any of the preceding claims, wherein the base part (1) comprises a flat surface (23) intended for fixing the table (40).

    [12]
    12. Assembly according to claim 11, wherein the flat surface (23) comprises holes (21) for fixing the table (40). twenty

    [13]
    13. Set of parts for a skateboard, characterized in that it comprises:
    - a removable assembly according to any of the preceding claims; Y
    - a set of torsion springs (6) with different wire diameters.
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    同族专利:
    公开号 | 公开日
    WO2016203072A1|2016-12-22|
    US20180193721A1|2018-07-12|
    EP3308839A1|2018-04-18|
    WO2016203076A1|2016-12-22|
    CN108260346B|2019-10-22|
    ES2546702B1|2016-05-31|
    JP2018517530A|2018-07-05|
    AU2016279841B2|2018-04-12|
    US10335667B2|2019-07-02|
    ES2546702B5|2022-01-26|
    EP3308839B1|2018-12-19|
    JP6444542B2|2018-12-26|
    CN108260346A|2018-07-06|
    AU2016279841A1|2018-02-01|
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    法律状态:
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    ES201530827A|ES2546702B5|2015-06-15|2015-06-15|detachable skateboard set|ES201530827A| ES2546702B5|2015-06-15|2015-06-15|detachable skateboard set|
    PCT/ES2016/070169| WO2016203072A1|2015-06-15|2016-03-15|Detachable arrangement for skateboard|
    EP16735901.7A| EP3308839B1|2015-06-15|2016-06-08|Removable assembly for a skateboard|
    PCT/ES2016/070430| WO2016203076A1|2015-06-15|2016-06-08|Removable assembly for a skateboard|
    JP2017566027A| JP6444542B2|2015-06-15|2016-06-08|Removable assembly for skateboard|
    AU2016279841A| AU2016279841B2|2015-06-15|2016-06-08|Removable assembly for a skateboard|
    CN201680046726.6A| CN108260346B|2015-06-15|2016-06-08|Detachable member for slide plate|
    US15/736,723| US10335667B2|2015-06-15|2016-06-08|Removable assembly for a skateboard|
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