• 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 relates to a bicycle wheel made of a fiber composite material, comprising a rim (1), a plurality of spokes and a center (3), wherein the spokes each have a first and second spoke portion (2.1; 2.2), which between the rim (1) and the center (3), characterized in that the first and second spoke sections (2.1, 2.2) have a curved shape in a laminated state and in a prestressed state the two spoke sections (2.1, 2.2) are straight.
    公开号:CH710731A1
    申请号:CH00246/15
    申请日:2015-02-24
    公开日:2016-08-31
    发明作者:Habermacher Timothy
    申请人:Scott Sports Sa；
    IPC主号:
    专利说明:

    TECHNICAL AREA
    The present invention relates to a bicycle wheel according to the preamble of claim 1. Furthermore, the present invention relates to a method for manufacturing a bicycle wheel.
    STATE OF THE ART
    In recent years, numerous developments in the field of bicycle wheels, especially for bicycle racing, have been brought about. In this area of sport, weight, rigidity of the material and aerodynamics, which can be attributed in particular to the rim geometry, play an essential role. In its basic elements, a wheel consists of the hub, the spokes and the rim. This also applies to wheels made of fiber composite material, in particular made of carbon. Basically, in the field of bicycle wheels made of fiber composite material, a distinction is made between disc wheels, wheels with solid spokes and wheels with pretensioned spokes. According to the present invention, wheels with prestressed spokes are considered, both the spokes and the rim being made of a fiber composite material, preferably carbon.
    EP 2 030 765 A2 describes a method for producing a wheel for bicycles, the rim and spoke being made of a cured fiber composite, for example carbon, and a wheel with pretensioned spokes. As can be seen from EP 2 030 765 A2, the production of the fig and the subsequent fastening of the spokes takes place in two separate processes. A large number of work steps are already required for the production of the rim. Starting with the production of the outer rim profile, followed by the provision of a plastic molded element, which is connected to the outer rim profile and covered with a cover layer. Only in a second process, which is independent of the first process, are the individual spokes, which, like the rim, consist of a fiber composite material, are attached to the already prefabricated rim. Finally, the entire wheel is hardened again to ensure a solid bond between the rim and the spokes.
    The process previously described from the prior art has the disadvantage that essentially two separate processes are required, on the one hand, the production of the rim, spokes and hub and, on the other hand, the fixing of the individual spokes on the rim and on the center holder or respectively at the hub.
    As already mentioned, aerodynamics are playing an increasing role in cycling. In general, it is important to optimize the aerodynamic resistance of the wheel and its robustness in crosswinds. Many companies are therefore trying to develop special rim geometries in this context. The rim cross-sections developed in recent years have V-shapes on the one hand, but more “bulbous” cross-sections are also becoming increasingly important in order to be able to better control the detachment behavior in cross winds. The separation behavior of the flow on the rim profile has a major influence on driving comfort and lines in cross winds.
    For years, the Zipp company has been marketing so-called aero bikes, in which the rim has a kind of golf ball surface.
    As an example of a current development in the field of rim geometries for carbon wheels, US 2014/0 292 061 A1 from Reynolds Cycling LLC should be mentioned at this point. This document discloses an asymmetrical geometry of a rim made of carbon fiber with prestressed spokes made of steel. The production of the asymmetrical rim geometry is also described, in particular the arrangement of the carbon fiber layers in a negative mold. The fixation and tensioning of the spokes is mentioned. However, this document does not show how the individual spokes are reliably fixed to the asymmetrical rim and how the pretensioning process of the individual spokes is carried out.
    [0008] EP 1 985 465 A1 describes a spoke, a wheel and a method for producing a memory from a fiber composite material. When the wheel is manufactured, the spokes are first manufactured in a separate process step in the sense of prefabrication. These spokes are then connected to the likewise prefabricated rim in a further process step. The disadvantage of this method is the connection of the rim and the spokes in two steps. In order to ensure that the spokes are held in the rim as much as possible, it is necessary to specially fan out the spokes at their ends so that a reliable connection between the spoke and the rim can be made possible.
    Further examples of bicycle wheels made of composite material in which prestressed spokes are used can be found in EP 1 795 370 A1 and DE 9 201 179. In both documents, the spokes are in a separate process step in a recess which is on the rim sits inserted and, for example, fastened and tensioned by a screw connection.
    DISCLOSURE OF THE INVENTION
    It is an object of the invention to provide a bicycle wheel made of a fiber composite material, as well as a method for producing a bicycle wheel, which avoids the disadvantages of known solutions. The bicycle wheel is characterized in particular by its simple, light and at the same time robust construction, without having to forego the excellent properties of pretensioned spokes. The manufacturing process is characterized in particular by the small number of process steps, which minimizes the risk of possible production errors and production times can be reduced accordingly.
    The object is achieved by the entirety of the features of the claims.
    In the following, a bicycle wheel is mentioned, this term covers both the rear wheel and the front wheel.
    [0013] If the laminated state of the first and second spoke sections is mentioned below, this defines an initial state of the spokes. In this initial state, the first and second spoke sections are not tensioned and have not yet been subjected to a spoke pretensioning force.
    If in the following a pretensioned state of the first and second spoke sections is mentioned, this defines a final state of the spokes, in which the spokes are subjected to a spoke pretensioning force, i.e. are biased. The subsequently inserted hub keeps the spokes in their pre-tensioned state and therefore in their final state.
    The bicycle wheel according to the invention, which preferably has disc brakes, is made of a fiber composite material. This type of bicycle wheel is preferred for use in racing. It comprises a rim and a plurality of spokes, the spokes each having a first and a second spoke section which each runs between the rim and the center of the bicycle wheel. The center comprises two center discs.
    [0016] The spokes are so-called prestressed spokes. According to the invention, the first and second spoke sections of the spokes, in a laminated state, have a curved shape. In a pretensioned state, the spoke sections are essentially straight.
    Due to the design in a curved shape in the laminated state, tension peaks that arise during the prestressing process in the spokes or the spoke sections are reduced, which is not the case with spokes that are being laminated and then prestressed. With such spokes, especially in the areas in which the spoke sections are in connection with the rim and the center or the center disks, there are high stresses due to bending moments that are undesirable and reduce the maximum possible load on the spoke. The bicycle wheel according to the invention achieves as homogeneous a stress distribution as possible in the spokes or the individual spoke sections. Furthermore, the introduction of braking force is improved by a homogeneous distribution of tension in the spokes. By reducing the voltage peaks, braking forces that are introduced by a disc brake can be introduced into the rim in an improved manner. Due to the lamination in a curved shape, the area in which the first and second spoke section emerges from the rim and the area in which the first and second spoke section is connected to the center, preferably a first and second center disc, is already tangential to that Preformed position that the spoke sections assume in the pretensioned state.
    In a preferred embodiment of the invention, the curved shape has the shape of an S-curve. This curve runs up to its first zero crossing, i.e. one half of the S curve, after the bend line
    of a bending beam from simple beam theory. In this embodiment, the S-curve assumes a symmetrical course.
    In a further preferred embodiment, the S curve has an asymmetrical shape. An asymmetrical S-curve is characterized in that half of the S-curve deviates from the bending line.
    In a further preferred embodiment, the asymmetrical S-curve is characterized in that the point which divides the asymmetrical S-curve into a first and a second half is assigned closer to the rim than to the center of the bicycle wheel.
    In a further preferred embodiment of the bicycle wheel according to the invention, the spokes form a first and a second spoke group. The spokes of the first spoke group run between first base points arranged on the rim, a brake disk side of the center, the center preferably being designed as a center disk and second base points, which are also arranged on the rim essentially opposite the first base points. The spokes of the second spoke group run between further first base points arranged on the rim, a non-brake disk side of the center, the center preferably being designed as a further center disk and further second base points, which are essentially opposite the further first base points and are also arranged on the rim are. The spokes including the first and second spoke sections run continuously in their fiber course between the two base points.
    In a further preferred embodiment, the first and second base points of the first spoke group and / or the first and second base points of the second spoke group are arranged at a distance from an apex S of the rim. The distance between the first and second base points of the first spoke group and the apex S of the rim is greater than the distance between the first and second base points of the second spoke group. The apex S of the rim is that area of the rim body which is opposite the rim base. When the spokes are pretensioned, the rim is positioned centrally. According to the invention, the rim is preferably designed as a symmetrical body, particularly preferably as a symmetrical hollow body. The vertex S runs at the intersection of the axis of symmetry with the rim body and faces the center of the bicycle wheel. In order to improve the driving experience of the bicycle wheel, it is advantageous if the spoke tension in the pre-tensioned state, both in the spokes of the first spoke group on the brake disc side and in the spokes of the second spoke group on the non-brake disc side, is approximately the same. This is achieved, among other things, by the arrangement of the base points according to the invention. A symmetrical shape of the rim also improves the aerodynamics of the bicycle wheel per se.
    The bicycle wheel according to the invention has, in a further preferred embodiment, on the brake disk side of the center, designed as a center disk, a receptacle for a brake disk, this receptacle being designed in one piece with the brake disk side of the center, i.e. were laminated in one step.
    Laminating in one step means that the molded parts having the shape for the rim, spoke and center are laid out with fibers in one step. The fibers for the spokes, preferably unidirectional fibers, are laid continuously from a first base point to an opposite base point.
    By manufacturing in one piece, additional glue points are avoided, which are particularly disadvantageous in those areas of the bicycle wheel where braking forces act. Furthermore, weight is saved by avoiding additional glue points.
    In order to further reduce the weight of the bicycle wheel, the brake disc holder is designed as a hollow body in one embodiment.
    In a further preferred embodiment, the first and the second spoke sections of the spokes form individual points of intersection, the points of intersection being formed by individual unidirectional fiber layers of the spoke sections. Due to the arrangement in several layers, the cross-section thickens at the crossing point. According to the invention, the point of intersection of the spoke sections is formed in that the layers of the first spoke section are alternately laminated with the layers of the further first spoke section, so that a weave is created at the point of intersection. This interweaving results in a solid spoke cross, whereby this spoke cross increases the rigidity of the system. For example, a first layer of the first spoke section is overlaid by a first layer of a further first spoke section, this first layer then being overlaid by a second layer of the first spoke section followed by a second layer of the second spoke section. In a preferred embodiment, the crossing point is formed by at least four layers. The structure of the intersection point according to the invention interweaves, so that additional material connections of the individual spoke sections can be avoided.
    In a further preferred embodiment, the first and second spoke sections of the first spoke group, in the pre-tensioned state to the outer geometry of the rim, in particular of the rim body, assume an insertion angle β (beta) which is preferably between 120 ° and 180 ° and the first and second spoke sections of the second spoke group assume an insertion angle α (alpha) which is greater than 90 °.
    According to the invention, the rim, the spokes and the center, having a first and second center disk, are laminated in one step. Only the hub is used in a separate process step and glued to the center or the center disks. This increases the stability of the bicycle wheel and prevents the number of adhesive points, which require additional process steps. Preferably the spokes are laminated throughout, i. the grain of the first and second spoke section runs continuously between the base points.
    Laminating in one step is understood to mean that all fibers, for example fibers made of so-called prepreg material (pre-impregnated fibers) for the rim, the spokes and the center, having two center discs, are laid out in one process step in the molded parts provided for this purpose before curing takes place. After curing, a one-piece product, a bicycle wheel comprising rim, spokes and the center is obtained. In a second basic step, the spokes are pretensioned, in which the center or the two center disks are pulled apart in the horizontal direction approximately to the size of the subsequently inserted hub before it is inserted. Manufacturing in one piece avoids time-consuming post-processing steps.
    Advantages which, in particular, result from the production according to the invention are a high-precision concentricity, smooth running even at high speeds, and a greatly improved rotational inertia.
    In a preferred embodiment of the method according to the invention, the first and second spoke sections, which run between the rim and the center, are each laminated in a curved shape, preferably in an S-shape, so that in the second basic step when prestressing the Spokes, the first and second spoke sections assume a substantially straight course.
    The curing can take place in the process according to the invention, preferably in an autoclave. After the rim, the spokes and the center have been laminated in the two molded parts, a form-independent filler, for example a vacuum hose or a foam material, is introduced between the molded parts. When a negative pressure is applied, in which air is sucked out of the mold, the volume of the mold-independent filler increases accordingly and presses the laminated rim into a desired position.
    The transfer molding process is available as an alternative curing process. When applying the transfer molding process, dry fibers are used, i.e. Fibers which, compared to the prepreg fibers, are not yet impregnated with resin during lamination. In the transfer molding process, the molded parts are pressed together and the rim is brought into its desired shape by introducing compressed air into a non-molded filler. In transfer molding, the resin is introduced and the curing process takes place in one step.
    In a preferred embodiment of the method according to the invention, the formation of the spokes takes place in that a stamp shape is applied to the laminated spokes in the molded parts. This punch shape has projections which essentially interact positively with the molded parts and serve to bring the spokes into a desired shape, for example to form an elliptical cross section. This further shape makes it possible to produce spokes of high quality. Furthermore, the spokes can be laminated from a unidirectional fabric without an additional cover layer.
    [0036] The bicycle wheel according to the invention is made from a fiber composite material. The rim, the spokes, the center and the hub are preferably made of carbon fibers. So-called pre-preg fibers, semi-finished products which have already been pre-impregnated with the corresponding reactive resins, are preferably used as the starting material.
    Further examples of fibers are aramid, glass fiber and boron fibers or a combination of the fibers mentioned.
    SHORT EXPLANATION OF THE FIGURES
    The invention is to be explained in more detail below in connection with the drawing on the basis of exemplary embodiments. 1 shows a schematic representation of half of the rim cross section, a first spoke section in a laminated state and in a pretensioned state, in a first embodiment, FIG. 2 a schematic representation of half of the rim cross section, a first spoke section in a laminated state and in a pretensioned state, in a second embodiment, FIG. 3 a schematic representation of the cross section through the bicycle wheel in a laminated state (a), a state during pretensioning (b) and a pretensioned state (c), FIG. 4 a partially schematic sectional view of half of the rim cross-section, a first and second spoke section, the first and second spoke group in a pretensioned state, FIG. 5 shows the view from FIG. 4 with the insertion angles α (alpha) and β (beta) of the first spoke sections of the first and second group of spokes, in the pretensioned state, in a partially 6 shows the results of an FEM simulation of the pretensioning process of a spoke section, a comparison between a straight laminated and a curved laminated spoke section, FIG. 7 shows a schematic partial sectional view through the rim, the integration of the spoke in the Rim is shown, Fig. 8 shows a sectional view through a point of intersection of spoke sections, Fig. 9 shows a perspective view of the bicycle wheel according to the invention, Fig. 10 shows an exploded view of a tool for producing the wheel according to the invention.
    WAYS OF CARRYING OUT THE INVENTION
    If in the following the laminated state of the first and second spoke sections is mentioned, this defines an initial state of the spokes. In this initial state, the first and second spoke sections are not tensioned and have not yet been subjected to a spoke pretensioning force.
    If in the following a pretensioned state of the first and second spoke sections is mentioned, this defines a final state of the spokes in which the spokes are subjected to a spoke pretensioning force, i.e. are biased. The subsequently inserted hub keeps the spokes in their pre-tensioned state and therefore in their final state.
    In an exemplary embodiment, the spoke pretensioning force which is applied to the first and second spoke sections during pretensioning is approximately the same on the non-brake disk side as on the brake disk side of the bicycle wheel; the difference between the two pretensioning forces is preferably less than 200 N .
    In Fig. 1, a preferred embodiment of the geometry of the spoke 2, in particular the first spoke section 2.1 is shown in the laminated state. The rim 1 comprises a symmetrical rim body 1 'and a rim base 1' '. Fig. 1 shows one half, comprising the first spoke section 2.1 of a first spoke group 20. The first spoke section 2.1 runs between a base point 4.1 and a center 3 of the bicycle wheel and, in the laminated state, is curved before the spokes are pretensioned. In the embodiment shown, the curved shape is designed as a symmetrical S-shape, this curve shape assuming the bending line of a bending beam from simple beam theory. The line 2 'represents the schematic course of a spoke known from the prior art, which, in contrast to the first and second spoke sections 2.1, 2.2 according to the invention, was laminated in a straight shape. As shown in Fig. 1, in the area of the base point 4.1, due to the curved S-shape, the spoke 2, already in the laminated state, approaches the course in the pretensioned state 2 '', which smooths out stress peaks in the area of the base point 4.1 and at an entry point at Center 3. In a preferred embodiment, the spokes 2 are made of a UD (unidirectional) fabric made of carbon fiber with a tensile modulus of elasticity of 130 GPa to 215 GPa.
    FIG. 2 shows the illustration from FIG. 1 with the difference that in this embodiment the curved shape of the first spoke section 2.1 'shown assumes an asymmetrical shape, the asymmetrical shape being characterized in that the half S curve, deviates from the bending line.
    In a further preferred embodiment (not shown in Fig. 2) the asymmetrical S-curve is characterized in that the point which divides the asymmetrical S-curve into a first and a second half, closer to the rim than the center the bicycle wheel is arranged. The two halves of the S curve are not the same size and are therefore asymmetrical.
    3 shows an example of the three steps (a) to (c) in the pretensioning process. Figure 3 (a) shows a cross-section through the bicycle wheel in the laminated state. The rim 1, the spokes 2 of the first and second spoke groups 20, 200 comprising the first and second spoke sections 2.1, 2.2; 2.1 'and 2.2' and the center 3, having a first and second center disk, are laminated in one step. The spoke sections are formed in a curved shape in the laminated state. Fig. 3 (b) shows the pretensioning process, the center 3, preferably consisting of two center letters, is pulled apart in the horizontal direction to approximately the size of the hub, with the spoke sections 2.1, 2.2, 2.1 'and 2.2' can be converted from their curved shape in the laminated state into a substantially straight course in the prestressed state. In the last step, as shown in Fig. 3 (c), the hub 10 is used, which holds the spokes in the pretensioned state.
    Fig. 4 shows a cross section through the rim 1, and a partial representation of a first spoke section 2.1 of the first spoke group 20 and the first spoke section 2.1 'of the second spoke group 200. The spokes 2 of the first spoke group 20 extend between the first base points 4.1, a brake disk side of the center 3 and a second base point 4.2 (not shown in FIG. 4). The spokes of the second spoke group 200 run between a first base point 4.1 ', a non-brake disk side of the center 3 and a second base point 4.2' (not shown in FIG. 4). The base points are arranged on the rim body T of the rim 1. In this embodiment, the rim 1, in particular the rim body 1 ', is designed as a symmetrical body. In the embodiment according to FIG. 4, the distance X1 which the base point 4.1 assumes from the axis of symmetry of the rim 1 is greater than the distance X2 which the base point 4.1 'also assumes from the axis of symmetry. In a preferred embodiment, the distance X2 is approximately half of the distance X1, based on the rim geometry shown.
    Fig. 5 shows the arrangement from Fig. 4 supplemented by the insertion angle β (beta) that the first and second spoke section 2.1, 2.2 of the first spoke group 20, in the pretensioned state to the outer geometry of the rim 1, measured at the base point 4.1 and 4.2 (not shown) occupies. Furthermore, the insertion angle α (alpha) is shown, which the first and second spoke sections 2.1 ', 2.2' of the second spoke group 200, in the pre-tensioned state, assume with respect to the outer geometry of the rim 1, measured at the first and second base points 4.1 ', 4.2'. In the preferred embodiment shown in FIG. 5, the introduction angle β (beta), based on the rim geometry shown, is between 120 ° and 180 °. The lead-in angle α (alpha) has a value greater than 90 °.
    5 also shows an angle β '(beta line) and an angle α' (alpha line). The angle α ́ (alpha dash) is measured between a line parallel to the symmetry axis of the rim 1, which runs through the base point 4.1 ́ and the first spoke section 2.1 ́, in the pretensioned state on the non-brake disc side 200. The angle β ́ ( beta line) is measured between a line parallel to the axis of symmetry of the rim 1, which runs through the base point 4.1 and the first spoke section 2.1, in the pretensioned state on the brake disc side 20. The angle α ́ (alpha line) and β ́ (beta -line) differ by a value less than or equal to 2 °, where α ́ (alpha-dash) is preferably greater β ́ (beta-dash). This relationship between α ́ (alpha line) and β ́ (beta line) is independent of the chosen geometry of rim 1.
    6 shows the result of an FEM simulation of the prestressing process, with a spoke section, a spoke 2 which is laminated essentially straight, and a spoke section 2.1 of a spoke 2 which has been laminated in a curved manner. The stresses in the direction of the spokes were considered. Both spoke sections, the one that was laminated straight and the one that was curved, were subjected to identical loading forces in the FEM simulation. The results of the straight laminated spoke section of spoke 2 'show clear stress peaks at the beginning and at the end of the spoke section (see black-gray areas). The originally curved, laminated spoke section 2.1 of the spoke 2, in comparison therewith, shows no tension peaks and a homogeneous tension profile after pretensioning.
    FIG. 7 shows a partial illustration of a cross section through the rim 1, in the area in which the spoke 2 or the spoke section 2.1 is integrated. The rim 1, the spokes 2 and the center 3 are laid in an aluminum mold in one step during the manufacture of the bicycle wheel. In a preferred embodiment, the spoke 2 is made of a unidirectional scrim made of carbon fiber and the rim 1 is made of a fabric, preferably also made of carbon fibers. The spoke 2 is built up in several layers from the unidirectional fabric. Their fibers run continuously from a first base point, via the center 3 of the bicycle wheel, to a second base point arranged on the rim body (not shown in FIG. 7). When integrating the spoke 2 in the rim body 1 ', the unidirectional fabric of the spoke 2 is attached to an inside of the rim body 1' by at least one, preferably several layers of the fabric 11 from which the rim 1 is made. The number of layers 11 and their orientation can vary. Additional gluing of the spoke 2, for example at the base point 4.1, is not necessary.
    8 shows a section through the intersection point 8, which runs, for example, through two first spoke sections 2.1, 2.3. Since the first spoke sections are symmetrical to the second spoke sections and form a spoke 2, the second spoke sections also have points of intersection 8 (not shown in FIG. 8). As shown by way of example in FIG. 8, the first spoke section 2.1 and the further first spoke section 2.3 are made up of several layers of a unidirectional fabric. The intersection point preferably comprises four layers 2.3.1, 2.3.2, 2.1.1, 2.1.2. In the preferred embodiment according to FIG. 8, the layers 2.1.1 and 2.1.2 of the first spoke sections 2.1 are laminated alternately with the layers 2.3.1 and 2.3.2 of the further first spoke section 2.3, so that a weave is created at the intersection point 8. It cannot be seen directly in FIG. 8 that at the intersection point 8, due to the at least four layers, there is a thickening of the spoke cross section.
    9 shows a perspective view of the bicycle wheel according to the invention. Shown are the spokes of the first 20, the second spoke group 200 as well as the non-brake disk side 31 and the brake disk side 30 of the bicycle wheel according to the invention and the rim 1. A spoke comprising a first and a second spoke section 2.1, 2.2 is shown as an example The spoke runs continuously between the base points 4.1 and 4.2, which are arranged on the rim 1 and form a spoke of the first spoke group 20.
    10 shows a preferred embodiment of a negative mold 9 according to the invention. The negative mold 9 comprises a first part 9.1 and a second part 9.2. In these two parts, in the associated recesses, the fiber for the rim body, the spokes, the center having a first and second center wheel are laid in one step. Another shape 15 forms the geometry of the rim well. In addition, two punch molds 14 and 13 are shown. In the assembled state of the negative mold 9, the punch molds 13 and 14 interact in a form-fitting manner with recesses for the spokes. In this way, a desired spoke cross section is formed.
    权利要求:
    Claims (16)
    [1]
    A bicycle wheel made of a fiber composite material, comprising a rim (1), a plurality of spokes (2) and a center (3), the spokes (2) each having a first and second spoke portion (2.1, 2.2), each between the rim (1) and the center (3), characterized in that the first and second spoke portion (2.1, 2.2) in a laminated state has a curved shape and in a prestressed state, the two spoke portions (2.1, 2.2) substantially just lost.
    [2]
    2. Bicycle wheel according to claim 1, characterized in that the first and the second spoke portion (2.1, 2.2) in the laminated state has an S-shape.
    [3]
    3. Bicycle wheel according to claim 2, characterized in that the S-shape has a symmetrical or an asymmetrical shape.
    [4]
    4. Bicycle wheel according to one of the preceding claims 1 to 3, characterized in that the spokes (2) form a first and a second spoke group (20, 200), wherein the spokes (2) of the first spoke group (20) between first foot points ( 4.1) arranged on the rim (1), a brake disc side (30) of the center (3) and second foot points (4.2) arranged on the rim (1) extend and the spokes (2) of the second spoke group (200) between further first Fußpunkten (4.3) arranged on the rim (1), a non-brake disc side (31) of the center (3) and further second foot points (4.4) arranged on the rim (1) extend.
    [5]
    A bicycle wheel according to claim 4, characterized in that the first and second root points (4.1, 4.2) of the first spoke group (20) and / or the first and second root points (4.3, 4.4) of the second spoke group (200) are spaced apart from one another (S) of the rim (1) are arranged.
    [6]
    6. bicycle wheel according to claim 5, characterized in that a distance (X1) of the first and second foot points (4.1, 4.2) of the first spoke group (20) to the apex (S) of the rim (1) is greater than a distance (X2) first and second foot points (4.3, 4.4) of the second spoke group (200).
    [7]
    A bicycle wheel according to claim 5, characterized in that a distance (X1) of the first and second root points (2.1, 2.2) of the first spoke group (20) to the apex (S) of the rim (1) is smaller than the distance (X2) first and second foot points (4.3, 4.4) of the second spoke group (200).
    [8]
    8. Bicycle wheel according to one of the preceding claims, characterized in that the brake disc side (30) of the center (3) has a brake disc receptacle (8), said side (30) of the center (3) and the disc holder (8) in one piece, in are formed laminated a step.
    [9]
    9. bicycle wheel according to claim 8, characterized in that the brake disc holder (8) is designed as a hollow body (9).
    [10]
    10. bicycle wheel according to one of the preceding claims, characterized in that the first and the second spoke portion (2.1, 2.2), depending on a crossing point (8) with a further first and second spoke portion (2.3, 2.4), wherein the crossing points (8 ) are formed by individual layers (2.3.1, 2.3.2, 2.1.1, 2.1.2) of the spoke sections (2.1, 2.3), preferably of at least four layers.
    [11]
    11. bicycle wheel according to claim 10, characterized in that in the crossing point (8) the layers (2.1.1, 2.1.2) of the first spoke section (2.1) alternately with the layers (2.3.1, 2.3.2) of the other first spoke section (2.3) are laminated, so that at the crossing point (8) a weave arises.
    [12]
    12. Bicycle wheel according to one of the preceding claims, characterized in that the first and second spoke portion (2.1, 2.2) of the spokes (2) of the first spoke group (20), in the prestressed state, to the outer geometry of the rim (1), measured at a Tangent applied to an outer geometry of the rim, passing through the foot point in the first and second base point (4.1, 4.2) an insertion angle β (beta) and the first and second spoke portion (2.1, 2.2) of the spokes (2) of the second spoke group ( 200), in the prestressed state, measured on a tangent, the outer geometry of the rim (1), measured in the first and second base point (4.1, 4.2) assumes an insertion angle α (alpha), preferably β (beta) assumes a value between 120 ° and 180 ° and a (alpha) preferably takes a value greater than 90 °.
    [13]
    13. bicycle wheel according to one of the preceding claims, characterized in that the rim (1), spokes (2) and center (3), are integrally laminated in one step, preferably the spokes (2) are laminated throughout.
    [14]
    14. Bicycle wheel according to one of the preceding claims, characterized in that the rim (1) is designed as a symmetrical body, preferably as a hollow body.
    [15]
    15. A method for producing a bicycle wheel in two basic steps, wherein in a first basic step, the lamination of the rim (1), the spokes (2), and the center (3), in one piece in one step, followed by curing and in a second Basic step is to preload the spokes and insert the hub (10).
    [16]
    16. The method according to claim 15, characterized in that in the first basic step, the first and the second spoke portion (2.1; 2.2) of the spoke (2), are laminated so that the first and the second spoke portion (2.1, 2.2) in the laminated state a curved shape, preferably S-shape, and in the second basic step, the first and the second spoke portion (2.1, 2.2) are biased so that in the prestressed state of the first and second spoke portion (2.1, 2.2) show a substantially straight course and the hub (10) is inserted.
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    同族专利:
    公开号 | 公开日
    CH710731B1|2016-12-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB978913A|1963-01-04|1965-01-01|Robert Barnett|Improvements relating to wheels for vehicles|
    US5104199A|1990-10-26|1992-04-14|Raphael Schlanger|Vehicle wheel|
    DE102008007722A1|2007-02-09|2008-08-14|Salomon S.A.|Spoke made of composite material for a spoked wheel|
    法律状态:
    2020-09-30| PFA| Name/firm changed|Owner name: SCOTT SPORTS SA, CH Free format text: FORMER OWNER: SCOTT SPORTS SA, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    CH00246/15A|CH710731B1|2015-02-24|2015-02-24|Bicycle wheel.|CH00246/15A| CH710731B1|2015-02-24|2015-02-24|Bicycle wheel.|
    EP16156936.3A| EP3061593B1|2015-02-24|2016-02-23|Bicycle wheel and method for its manufacture|
    EP16156947.0A| EP3061594B1|2015-02-24|2016-02-23|Bicycle wheel and method for its manufacture|
    US15/052,517| US10052908B2|2015-02-24|2016-02-24|Bicycle wheel|
    US15/052,604| US9944114B2|2015-02-24|2016-02-24|Bicycle wheel|
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