Bicycle component, bicycle chainring and bicycle composite chainring

Abstract

Bicycle component (20), comprising: a basic component (22) made of an aluminium alloy, a first aluminite layer (28) provided on the base component (22), wherein the first aluminite layer (28) has a thickness equal to or greater than 1.0 µm, wherein the first aluminite layer (28) is provided on the base component in a first region (AR1) and the first aluminite layer (28) is not provided in a second region (AR2) which differs from the first region (AR1), a second aluminite layer (34) provided on the base component, wherein the second aluminite layer (34) is provided on the base component in the second area (AR2), which differs from the first area (AR1), and a non-metallic component (30) provided on the first aluminite layer (28), wherein the non-metallic component (30) is electrically conductive.

Description

[0001] The present invention relates to a bicycle component, a bicycle chainring and a bicycle composite chainring.

[0002] Cycling is becoming an increasingly popular leisure activity and means of transport. Moreover, it has become a very popular competitive sport for both amateurs and professionals. Whether the bicycle is used for leisure, transport, or competition, the bicycle industry is constantly improving the various components of the bicycle.

[0003] Examples of components consisting of an aluminum-containing substrate on which a first aluminite layer is formed are known, for example, from DE 20 2017 000 312 U1 or DE 690 22 543 T2. Surface treatments for the formation of aluminite layers are described by way of example in US 2005 / 0 282 672 A1.

[0004] According to a first aspect of the present invention, a bicycle component comprises a base component and a first aluminite layer. The base component is made of an aluminum alloy. The first aluminite layer is provided on the base component. The first aluminite layer has a thickness equal to or greater than 1.0 µm. With such a bicycle component, the first aluminite layer can be provided with sufficient electrical insulating properties. Thus, the bicycle component, on which a colored aluminite layer can be formed, can be provided even when the bicycle component is combined with a non-metallic, electrically conductive material.

[0005] Furthermore, the bicycle component is designed such that the first aluminum layer is provided on the base component in a first area and the first aluminum layer is not provided in a second area that differs from the first area.

[0006] The bicycle component also features a non-metallic component that is applied to the first aluminite layer. This allows for the creation of a composite bicycle component that incorporates both the aluminum alloy and the non-metallic material, while still ensuring sufficient formation of the colored aluminite layer on the bicycle component.

[0007] The bicycle component is designed so that the non-metallic part is electrically conductive. With such a bicycle component, a composite bicycle component can be provided that incorporates the aluminum alloy and the electrically conductive non-metallic material, while the colored aluminum layer on the bicycle component can be adequately formed.

[0008] The bicycle component features a second aluminite layer applied to the base component. Such a bicycle component allows for the creation of a bicycle composite component that, in addition to the first aluminite layer with electrical insulating properties, has a second aluminite layer that is colored.

[0009] The bicycle component is designed such that the second aluminite layer is located on the base component in a second area that differs from the first. With this design, the first aluminite layer provides sufficient electrical insulation. Therefore, an aluminum base material can be used to form a colored aluminite layer as the second layer, positioned differently from the first, even when the bicycle component is combined with an electrically conductive non-metallic material.

[0010] Preferably, the bicycle component is designed such that the thickness of the first aluminite layer is equal to or greater than 2.5 µm. With such a bicycle component, the electrical insulating properties of the first aluminite layer can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component.

[0011] Preferably, the bicycle component is designed such that the thickness of the first aluminite layer is equal to or greater than 5.0 µm. This further improves the electrical insulating properties of the first aluminite layer. As a result, the colored aluminite layer on the bicycle component can be formed more easily.

[0012] Preferably, the bicycle component is designed such that the thickness of the first aluminite layer is equal to or greater than 10.0 µm. With such a bicycle component, the electrical insulating properties of the first aluminite layer can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component.

[0013] Furthermore, the bicycle component is preferably designed such that the non-metallic part is made of a carbon fiber reinforced plastic. This allows for the provision of a bicycle composite component that combines the aluminum alloy and the lightweight carbon fiber reinforced plastic with high mechanical strength, while still allowing for the formation of a sufficiently colored aluminum layer on the bicycle component.

[0014] Preferably, the bicycle component is designed such that the non-metallic part is made of a conductive resin. With such a design, a bicycle composite component can be provided that comprises the aluminum alloy and the non-metallic part made of conductive resin, while the colored aluminum layer on the bicycle component can be adequately formed.

[0015] Furthermore, the bicycle component preferably also includes a dye compound that is fixed to the second aluminite layer. Thus, a bicycle composite component can be provided which, in addition to the first aluminite layer with electrical insulating properties, has a second aluminite layer colored with the dye compound.

[0016] Preferably, the bicycle component is designed such that the non-metallic part contains a resin. The non-metallic part is attached to the base component via the first aluminum layer using an integral molding process. This integral molding process improves the productivity of the bicycle component. Thus, a composite bicycle component can be provided that is ideal for mass production and in which the non-metallic part adheres securely to an aluminum base material.

[0017] Preferably, the bicycle component is designed such that the non-metallic component contains a resin. The non-metallic component is attached to the base component via the first aluminum layer using a thermocompression bonding process. Such a bicycle component provides a composite bicycle component in which the non-metallic material, made from a prepreg material, adheres securely to an aluminum base material.

[0018] According to a further preferred aspect of the present invention, a bicycle chainring comprises the bicycle component according to the present invention. With such a bicycle component, sufficient electrical insulating properties can be imparted to the first aluminite layer. Thus, the bicycle chainring, on which a colored aluminite layer may be formed, can be provided even when the bicycle component is combined with a non-metallic material that is electrically conductive.

[0019] According to a further preferred aspect of the present invention, a bicycle composite chainring comprises the bicycle component according to the present invention. With such a bicycle component, sufficient electrical insulating properties can be imparted to the first aluminite layer. Thus, the bicycle composite chainring, on which a colored aluminite layer may be formed, can be provided even when the bicycle component is combined with a non-metallic material that is electrically conductive.

[0020] According to a further preferred aspect of the present invention, a bicycle wheel comprises the bicycle component according to the present invention. With such a bicycle component, sufficient electrical insulating properties can be imparted to the first aluminum layer. Thus, the bicycle wheel, on which a colored aluminum layer may be formed, can be provided even when the bicycle component is combined with a non-metallic material that is electrically conductive.

[0021] According to a further preferred aspect of the present invention, a bicycle component comprises a base component and a first aluminite layer. The base component is made of an aluminum alloy. The first aluminite layer is provided on the base component. The first aluminite layer has an electrical resistance equal to or greater than 10 3Ω is. With the bicycle component according to this preferred aspect, due to the first aluminite layer with the high electrical resistance, an aluminum base material can be provided on which a colored aluminite layer can be formed, even if the bicycle component is combined with a non-metallic material that is electrically conductive.

[0022] Furthermore, the bicycle component is designed such that the first aluminum layer is provided on the base component in a first area and the first aluminum layer is not provided in a second area that differs from the first area.

[0023] The bicycle component also features a non-metallic component that is provided on the first aluminite layer. With such a bicycle component, a composite bicycle component can be provided that incorporates the aluminum alloy and the non-metallic material, while the colored aluminite layer on the bicycle component can be adequately formed.

[0024] The bicycle component is designed so that the non-metallic part is electrically conductive. This allows for the creation of a composite bicycle component that incorporates the aluminum alloy and the electrically conductive non-metallic material, while still allowing for the formation of the colored aluminum layer on the bicycle component.

[0025] The bicycle component also features a second aluminite layer applied to the base component. Such a bicycle component allows for the creation of a bicycle composite component that, in addition to the first aluminite layer with electrical insulating properties, has a second aluminite layer that is used as a colored aluminite layer.

[0026] Furthermore, the bicycle component is designed such that the second aluminite layer is located on the base component in a second area that differs from the first. With this preferred aspect of the bicycle component, the first aluminite layer has sufficient electrical insulating properties. Thus, an aluminum base material can be provided with which a colored aluminite layer can be formed as the second aluminite layer, positioned differently from the first aluminite layer, even when the bicycle component is combined with a non-metallic, electrically conductive material.

[0027] Preferably, the bicycle component is designed such that the electrical resistance of the first aluminum layer is equal to or higher than 10 4Ω is. Therefore, the electrical insulating properties of the first aluminite layer can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component.

[0028] Preferably, the bicycle component is designed such that the electrical resistance of the first aluminum layer is equal to or higher than 10 5 Ω is. Therefore, the electrical insulating properties of the first aluminite layer can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component.

[0029] Preferably, the bicycle component is designed such that the non-metallic part is made of carbon fiber reinforced plastic. This allows for the provision of a bicycle composite component that combines the aluminum alloy and the lightweight carbon fiber reinforced plastic with high mechanical strength, while still allowing for the formation of a sufficiently colored aluminum layer on the bicycle component.

[0030] Preferably, the bicycle component is designed such that the non-metallic part is made of a conductive resin. This allows for the provision of a bicycle composite component comprising the aluminum alloy and the non-metallic part made of conductive resin, while still ensuring sufficient formation of the colored aluminum layer on the bicycle component.

[0031] Preferably, the bicycle component further comprises a dye compound that is fixed to the second aluminite layer. Thus, a bicycle composite component can be provided which, in addition to the first aluminite layer with electrical insulating properties, has a second aluminite layer colored with the dye compound.

[0032] Preferably, the bicycle component is designed such that the non-metallic component has an electrical resistance that is lower than the electrical resistance of the first aluminite layer. Because the first aluminite layer has an electrical resistance higher than that of the non-metallic material, an aluminum base material can be provided on which a colored aluminite layer can be formed, even when the bicycle component is combined with an electrically conductive non-metallic material.

[0033] Preferably, the bicycle component is designed such that the non-metallic part contains a resin. The non-metallic part is attached to the base component via the first aluminum layer using an integral molding process. This integral molding process improves the productivity of the bicycle component. Thus, a composite bicycle component can be provided that is ideal for mass production and in which the non-metallic part adheres securely to an aluminum base material.

[0034] Preferably, the bicycle component is designed such that the non-metallic part contains a resin. This non-metallic part is attached to the base component via the first aluminum layer using a thermocompression bonding process. This allows for a bicycle composite component in which the non-metallic material, made from a prepreg material, adheres securely to an aluminum base material.

[0035] According to a further preferred aspect of the present invention, a bicycle chainring comprises the bicycle component according to the present invention. With such a bicycle component, due to the first aluminite layer with high electrical resistance, a bicycle chainring can be provided which has an aluminum base material on which a colored aluminite layer can be formed, even when the bicycle component is combined with a non-metallic material that is electrically conductive.

[0036] According to a further preferred aspect of the present invention, a bicycle composite sprocket comprises the bicycle component according to the present invention. Due to the first aluminite layer with high electrical resistance, a bicycle composite sprocket can be provided which has a composite material on which a colored aluminite layer can be formed, even when the bicycle component is combined with a non-metallic material that is electrically conductive.

[0037] According to a further preferred aspect of the present invention, a bicycle wheel comprises the bicycle component according to the present invention. With such a bicycle component, sufficient electrical insulating properties can be imparted to the first aluminum layer. Thus, the bicycle wheel, on which a colored aluminum layer may be formed, can be provided even when the bicycle component is combined with a non-metallic material that is electrically conductive.

[0038] The invention and many of its associated advantages can be assessed more accurately when they become better understood with reference to the following description in conjunction with the accompanying drawings, whereby Fig. 1 is a side view of a bicycle crank which includes a bicycle component (bicycle chainring) according to an embodiment of the present invention; Fig. 2 a cross-sectional view of the bicycle component along line II-II of Fig. 1 is; Fig. 3 a cross-sectional view of the bicycle component along line III-III of Fig. 1 is; Fig. 4 a partial side view of a basic component of the in Fig. The illustrated bicycle component is; Fig. 5 a partial cross-sectional view of the in Fig. The bicycle component shown in section 3 is; Fig. 6 a partial side view of the basic component of the in Fig. The illustrated bicycle component is; Fig. 7 a partial side view of the basic component of the in Fig. The illustrated bicycle component is; Fig. 8 a cross-sectional view of the bicycle component along line VIII-VIII of Fig. 6 is; Fig. 9 an enlarged schematic cross-sectional view of the in Fig. The illustrated bicycle component is; Fig. 10 the relationship between the thickness of a first aluminum layer and the electrical resistance of the first aluminum layer in the Fig. 1 illustrated bicycle component shown; Fig. 11. A flowchart of a process for producing the in Fig. 1 illustrated bicycle component shown; Fig. There are 12 to 20 schematic cross-sectional views that illustrate the steps of the process for manufacturing the in Fig. 1 illustrated bicycle component; Fig. 21 is a side view of a bicycle wheel which includes a bicycle component according to another embodiment of the present invention; and Fig. 22 a partially enlarged view of a rim of the in Fig. 21 illustrated bicycle wheels.

[0039] The embodiments are now described with reference to the attached drawings, whereby in the various drawings the same reference numerals denote corresponding or identical elements.

[0040] First, with reference to Fig. Figure 1 comprises a bicycle crank 10 and a bicycle chainring 12 according to an embodiment of the present invention. The bicycle crank 10 has a pivot axis A1. The bicycle crank 10 is rotatable about the pivot axis A1 relative to a bicycle frame (not shown). During pedaling, the bicycle crank 10 is rotated about the pivot axis A1 in the direction of rotation D11. The direction of rotation D11 is defined along the circumferential direction D1, which is defined about the pivot axis A1.

[0041] The bicycle sprocket 12 engages with a bicycle chain 2 to transmit a rotational drive force F1 to the bicycle chain 2. The bicycle crank 10 has a bicycle sprocket 14 in addition to the bicycle sprocket 12. The bicycle sprocket 14 engages with the bicycle chain 2 to transmit the rotational drive force F1 to the bicycle chain 2. The bicycle sprocket 12 has an outer diameter that is larger than the outer diameter of the bicycle sprocket 14. Although the bicycle crank 10 in this embodiment has the bicycle sprockets 12 and 14, the bicycle crank 10 can also have additional bicycle sprockets besides the bicycle sprockets 12 and 14. Furthermore, one of the bicycle sprockets 12 and 14 can be omitted from the bicycle crank 10. Although the bicycle chainrings 12 and 14 are front chainrings in this embodiment, the structure of the bicycle chainrings 12 and 14 can be applied to a rear chainring.

[0042] In the present application, the following directional terms "front", "back", "forward", "backward", "left", "right", "across", "up", and "down", as well as other similar directional terms, refer to those directions that are determined, for example, based on the user (e.g., the cyclist) sitting in the saddle (not shown) of a bicycle (not shown) facing the handlebars (not shown). Consequently, these terms, as used to describe the bicycle crank 10 of the bicycle chainring 12, should be interpreted in relation to the bicycle equipped with the bicycle crank 10 used in an upright riding position on a horizontal surface.

[0043] As in Fig. As shown in Figure 1, the bicycle crank 10 comprises a chainring mounting component 16, a cover 17, a crank axle CA1, a right crank arm CA2, and a left crank arm CA3. The bicycle chainring 12 has crank mounting sections 18. The crank mounting sections 18 are attached to the chainring mounting component 16 by fasteners such as screws (not shown). The bicycle chainring 14 is attached to at least one of the bicycle chainring 12 and the chainring mounting component 16 by fasteners such as screws (not shown). The cover 17 is attached to at least one of the bicycle chainring 12 and the chainring mounting component 16.

[0044] The right crank arm CA2 and the left crank arm CA3 are secured to the crank axle CA1. The right crank arm CA2 and the left crank arm CA3 are mounted to the bicycle frame via the crank axle CA1 so that they can rotate about the central axis of rotation A1. The chainring mounting component 16 is mounted to the right crank arm CA2 so that it can rotate integrally with the right crank arm CA2 about the central axis of rotation A1.

[0045] Since the bicycle chainrings 12 and 14 in this embodiment essentially have the same structure, the bicycle chainring 12 is described in detail below, while the bicycle chainring 14 is not described in detail here for the sake of brevity. The bicycle chainrings 12 and 14 can also be referred to as bicycle compound chainrings 12 and 14, respectively.

[0046] As in the Fig. 2 and Fig. As shown in Figure 3, the bicycle chainring 12 has a bicycle component 20 according to the embodiment of the present invention. The bicycle composite chainring 12 has the bicycle component 20 according to the embodiment of the present invention. Although the bicycle chainring 12 has the bicycle component 20 in this embodiment, the structure of the bicycle component 20 can be applied to other bicycle elements. The bicycle component 20 has a base component 22. The base component 22 is made of an aluminum alloy.

[0047] As in Fig. As shown in Figure 4, the basic component 22 in this embodiment has an annular part 24 and several sprocket teeth 26. The several sprocket teeth 26 are provided on an outer circumference of the annular part 24. The several sprocket teeth 26 engage with the bicycle chain 2. The several sprocket teeth 26 are integrally formed with the annular part 24 as a single, unitary component.

[0048] As in Fig. As shown in Figure 5, the bicycle component 20 has a first aluminum layer 28. The first aluminum layer 28 is provided on the base component 22. In this embodiment, the first aluminum layer 28 is provided on the annular part 24. The first aluminum layer 28 is provided on a portion of the annular part 24. The first aluminum layer 28 can have multiple aluminum layers.

[0049] The bicycle component 20 further comprises a non-metallic component 30, which is provided on the first aluminum layer 28. The non-metallic component 30 comprises a resin. The non-metallic component 30 is attached to the base component 22 via the first aluminum layer 28 by an integral molding process. In this embodiment, the non-metallic component 30 can be made of a carbon fiber reinforced plastic. The non-metallic component 30 comprises a carbon fiber. The carbon fiber is impregnated with the resin, thus providing the carbon fiber reinforced plastic. The non-metallic component 30 is attached to the first aluminum layer 28.

[0050] Other methods besides the integral forming process can be used to attach the non-metallic component 30. For example, the non-metallic component 30 can be attached to the base component 22 via the first aluminite layer 28 by a thermocompression bonding process. In the thermocompression bonding process, at least one prepreg material is attached to the first aluminite layer 28.

[0051] The non-metallic component 30 can be electrically conductive. The non-metallic component 30 can be made of a conductive resin. The resin comprises the conductive resin. The carbon fiber is impregnated with the conductive resin. Examples of conductive resin include a conductive epoxy resin.

[0052] As in the Fig. 2 and Fig. As can be seen in Figure 3, the base component 22 is provided within the non-metallic component 30. In this embodiment, the base component 22 is partially provided within the non-metallic component 30. The annular part 24 of the base component 22 is partially embedded in the non-metallic component 30. The base component 22 is embedded in the molten resin of the non-metallic component 30 during the integral molding process. As shown in Figure 3. Fig. As can be seen in Figure 4, the base component 22 has several through holes 32. The through holes 32 are provided on the ring-shaped part 24 of the base component 22. As shown in Fig. As can be seen in Figure 2, the non-metallic component 30 is positioned in the through-holes 32. Specifically, the non-metallic component 30 is partially positioned in the through-holes 32. The molten resin of the non-metallic component 30 enters the through-holes 32 during the integral molding process.

[0053] As in Fig. As can be seen in Figure 6, the non-metallic component 30 is ring-shaped. The non-metallic component 30 covers the ring-shaped part 24 of the base component 22. Although in this embodiment the non-metallic component 30 partially covers the ring-shaped part 24 of the base component 22, the non-metallic component 30 can completely cover the ring-shaped part 24 of the base component 22.

[0054] As in Fig. As shown in Figure 5, the bicycle component 20 further comprises a second aluminum layer 34, which is provided on the base component 22. The first aluminum layer 28 is provided on the base component 22 in a first region AR1. The second aluminum layer 34 is provided on the base component 22 in a second region AR2, which differs from the first region AR1. In this embodiment, the first aluminum layer 28 is not provided in the second region AR2. The second aluminum layer 34 is not provided in the first region AR1.

[0055] As in the Fig. 6 and Fig. As can be seen in Figure 7, the first area AR1 and the second area AR2 are divided by boundary lines BL1 and BL2. In this embodiment, the boundary lines BL1 and BL2 are arc-shaped. The first area AR1 is, from the perspective of an axis direction D2 ( Fig. 5) parallel to the axis of rotation A1, in a ring shape. The second area AR2 from the perspective of the axis direction D2 ( Fig. 5) annular. The first region AR1 is radially located within the second region AR2. The first region AR1 is a region where the base component 22 overlaps the non-metallic component 30 from the perspective of the axial direction D2 ( Fig. 5) The second area AR2 is an area where the basic component 22 does not overlap the non-metallic component 30 from the perspective of the axial direction.

[0056] As in Fig. As can be seen in Figure 8, the boundary line BL1 is radially offset from the boundary line BL2. The first area AR1 is indicated in cross-section by a thick dashed line LN1, as shown in Figure 8. Fig. 8. The second area AR2 is indicated by a thick dashed line LN2 in the cross-section, shown in Fig. 8.

[0057] As in Fig. As can be seen in Figure 9, the second aluminite layer 34 has a second surface 36 and pores 38. The pores 38 are provided on the second surface 36. The bicycle component 20 also has a dye compound 40, which is fixed to the second aluminite layer 34. The dye compound 40 has dye particles 42. The dye particles 42 of the dye compound 40 are provided in the pores 38 of the second aluminite layer 34. The second aluminite layer 34 is colored with the dye compound 40. For example, the dye compound 40 has a different color than the aluminum alloy. In this embodiment, the dye particles 42 are black. However, the color of the dye compound 40 is not limited to this embodiment. The second aluminite layer 34 can have several aluminite layers.

[0058] The bicycle component 20 further comprises a sealing layer 44, which is provided on the second aluminite layer 34. In this embodiment, the sealing layer 44 is provided on the second surface 36 of the second aluminite layer 34 for covering the pores 38. The sealing layer 44 comprises, for example, nickel hydrate. The sealing layer 44 is designed such that it prevents the dye particles 42 from dissolving out of the pores 38.

[0059] As in Fig. As can be seen in Figure 5, the first aluminum layer 28 has a thickness T1 that is equal to or greater than 1.0 µm. The thickness T1 of the first aluminum layer 28 can be equal to or greater than 2.5 µm. The thickness T1 of the first aluminum layer 28 can be equal to or greater than 5.0 µm. The thickness T1 of the first aluminum layer 28 can be equal to or greater than 10.0 µm. The thickness T1 of the first aluminum layer 28 can be equal to or less than 100 µm. The thickness T1 of the first aluminum layer 28 can be essentially equal to 1.0 µm. The thickness T1 of the first aluminum layer 28 can be essentially equal to 100 µm. That is, the thickness T1 of the first aluminum layer 28 can be in a range from approximately 1.0 µm to approximately 100 µm.

[0060] Fig. Figure 10 shows the relationship between the thickness T1 of the first aluminum layer 28 and the electrical resistance of the first aluminum layer 28. As in Fig. As can be seen in Figure 10, the greater thickness of the first aluminum layer 28 results in a higher electrical resistance of the first aluminum layer 28. In this embodiment, the electrical resistance of the first aluminum layer 28 is essentially equal to or greater than Figure 10. 3 Ω, if the thickness T1 is equal to 1.0 µm. The electrical resistance of the first aluminum layer 28 is essentially equal to or greater than 10 4 Ω, when the thickness T1 is equal to 2.5 µm. The electrical resistance of the first aluminum layer 28 is essentially equal to 10 5 Ω, if the thickness T1 is equal to 10 µm.

[0061] That is, in this embodiment, the first aluminum layer 28 has an electrical resistance equal to or greater than 10 3 Ω is. The electrical resistance of the first aluminum layer 28 is equal to or greater than 10. 4 Ω. The electrical resistance of the first aluminum layer 28 is equal to or greater than 10 5Ω. The electrical resistance of the first aluminum layer 28 can be essentially equal to 10 3 Ω. The electrical resistance of the first aluminum layer 28 can be essentially equal to 10 4 Ω. The electrical resistance of the first aluminum layer 28 can be essentially equal to 10 5 Ω.

[0062] Furthermore, the non-metallic component 30 can have an electrical resistance that is smaller than the electrical resistance of the first aluminum layer 28, since the first aluminum layer 28 has a sufficient electrical resistance.

[0063] The following describes a method for manufacturing bicycle component 20 with reference to the Fig. 11 to 20 are described in detail.

[0064] As in the Fig. 11 and Fig. As can be seen in Figure 12, the process for manufacturing the bicycle component 20 includes providing the basic component 22 from the aluminum alloy (step S1). For example, the basic component 22 is provided by means of casting, forging and pressing.

[0065] As in Fig. As shown in Figure 11, the process for manufacturing the bicycle component 20 includes degreasing the base component 22 (step S2). For example, degreasing the base component 22 includes placing the base component 22 in a degreasing agent for approximately 1 minute at a temperature of approximately 60 °C. The degreasing agent contains phosphate. In addition to the phosphate, the degreasing agent may also contain a surfactant.

[0066] The process for manufacturing the bicycle component 20 includes the chemical polishing of the base component 22 (step S3). For example, the chemical polishing includes placing the base component 22 in a chemical polishing agent for approximately 30 minutes at a temperature of approximately 90 °C.

[0067] The process for manufacturing the bicycle component 20 includes the formation of pores (recesses) on the base component 22 after chemical polishing (step S4). For example, the formation of the pores includes etching the base component 22 to create the pores after chemical polishing. The formation of the pores can also include applying a laser to the base component 22 to create the pores instead of, or in addition to, etching.

[0068] As in the Fig. As shown in Figures 11 to 14, the process for manufacturing the bicycle component 20 comprises forming the first aluminite layer 28 with thickness T1 on the base component 22 (step S5). Forming the first aluminite layer 28 includes forming the first aluminite layer 28 on the base component 22 etched by etching the base component 22. For example, forming the first aluminite layer 28 includes anodizing the base component 22, forming the first aluminite layer 28 on the base component 22.

[0069] As in Fig. As shown in Figure 13, the formation of the first aluminite layer 28 includes placing the base component 22 in an electrolyte solution 46 provided in an electrolytic cell 48. The formation of the first aluminite layer 28 includes connecting an anode electrode (not shown) to the base component 22. The formation of the first aluminite layer 28 includes placing a cathode electrode (not shown) in the electrolyte solution. The formation of the first aluminite layer 28 includes applying a voltage to the anode electrode to anodize the base component 22. Therefore, as shown in Figure 13, the formation of the first aluminite layer 28 is carried out by placing the base component 22 in an electrolyte solution 46, which is provided in an electrolytic cell 48. Fig. As can be seen in Figure 14, the first aluminum layer 28 has formed on the base component 22.

[0070] As in Fig. As shown in Figure 11, the process for manufacturing the bicycle component 20 includes drying the first aluminite layer 28 (step S6). For example, drying the first aluminite layer 28 includes heating the first aluminite layer 28 to dry it after its formation. Heating the first aluminite layer 28 involves heating the base component 22 and the first aluminite layer 28 for approximately 30 minutes at a temperature of approximately 140 °C in a stacked oven. The base component 22 and the first aluminite layer 28 are then cooled to room temperature.

[0071] As in the Fig. 11 and Fig. As shown in Figure 15, the process for manufacturing the bicycle component 20 includes attaching the non-metallic component 30 to the first aluminite layer 28 (step S7). For example, attaching the non-metallic component 30 includes forming the carbon fiber reinforced plastic as the non-metallic component 30 on the first aluminite layer 28. The non-metallic component 30 adheres to the first aluminite layer 28 by means of the resin of the carbon fiber reinforced plastic.

[0072] As in the Fig. 11 and Fig. As shown in Figure 16, the process for manufacturing the bicycle component 20 includes removing part of the first aluminite layer 28 from the base component 22 (step S8). For example, removing part of the first aluminite layer 28 includes removing part of the first aluminite layer 28 from the second region AR2 of the base component 22.

[0073] As in the Fig. 11, Fig. 17 and Fig. As shown in Figure 18, the process for manufacturing the bicycle component 20 includes forming the second aluminite layer 34 on the base component 22 (step S9). For example, forming the second aluminite layer 34 includes forming the second aluminite layer 34 on the base component 22 in the second area AR2. Forming the second aluminite layer 34 includes anodizing the base component 22 to form the second aluminite layer 34 on the base component 22.

[0074] As in Fig. As shown in Figure 17, the formation of the second aluminite layer 34 involves placing the base component 22 in an electrolyte solution 50 provided in an electrolytic cell 52. The formation of the second aluminite layer 34 includes connecting an anode electrode (not shown) to the base component 22. The formation of the second aluminite layer 34 also includes placing a cathode electrode (not shown) in the electrolyte solution 50. Finally, the formation of the second aluminite layer 34 involves applying a voltage to the anode electrode to anodize the base component 22. Therefore, as shown in Figure 17, the formation of the second aluminite layer 34 involves placing the base component 22 in an electrolyte solution 50. Fig. As can be seen in Figure 18, the second aluminum layer 34 is formed on the base component 22.

[0075] During the formation of the second aluminite layer 34, the voltage applied to the base component 22 induces a current flow between the base component 22 and the electrolyte solution 50. The non-metallic component 30 is electrically conductive. Accordingly, if the first aluminite layer 28 has an electrical resistance lower than the electrical resistance of the second aluminite layer 34, the current flows through the first aluminite layer 28 and the non-metallic component 30 without passing through the second region AR2. This effectively prevents the formation of the second aluminite layer 34.

[0076] However, in this embodiment, this is prevented because the first aluminum layer 28 has an electrical resistance equal to or greater than 10 3 Ω is the first aluminum layer 28 due to the sufficient electrical resistance of the first aluminum layer that the current flows through the first aluminum layer 28 during anodizing. Accordingly, as in Fig. As can be seen in Figure 18, the second aluminite layer 34 is effectively formed on the base component 22 in the second area AR2.

[0077] As in the Fig. 11 and Fig. As shown in Figure 19, the process for manufacturing the bicycle component 20 includes applying the dye compound 40 to the second aluminite layer 34 (step S10). For example, applying the dye compound 40 includes immersing the base component 22 with the second aluminite layer 34 in a dye solution containing the dye compound 40. The second aluminite layer 34 has the pores 38 ( Fig. 9) on the second surface 36 of the second aluminite layer 34. The dye particles 42 of the dye compound 40 enter the pores 38.

[0078] As in the Fig. 11 and Fig. As can be seen in Figure 20, the process for manufacturing bicycle component 20 includes sealing the pores 38 ( Fig. 9) with the sealing layer 44, so that the dye compound 40 is fixed in the second aluminite layer 34 (step S11). For example, sealing the pores involves placing the base component 22 with the second aluminite layer 34 in a sealing solution containing the sealing material. The sealing material includes nickel hydrate. The sealing material covers the pores of the second aluminite layer 34. The bicycle component 20 is washed with water to remove any remaining sealing solution from the second aluminite layer 34 or any other part of the bicycle component 20. Thus, the bicycle component 20 can be manufactured.

[0079] The bicycle component 20 has the following features.

[0080] In the bicycle component 20, the first aluminite layer 28 is provided on the base component 22. The first aluminite layer 28 has a thickness T1 that is equal to or greater than 1.0 µm. Accordingly, the first aluminite layer 28 can be given sufficient electrical insulating properties. Thus, the bicycle component 20, on which a colored aluminite layer may be formed, can be provided even when the bicycle component 20 is combined with a non-metallic, electrically conductive material.

[0081] Since the thickness of the first aluminite layer 28 is equal to or greater than 2.5 µm, the electrical insulating properties of the first aluminite layer 28 can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component 20.

[0082] Since the thickness of the first aluminite layer 28 is equal to or greater than 5.0 µm, the electrical insulating properties of the first aluminite layer 28 can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component 20.

[0083] Since the thickness of the first aluminite layer 28 is equal to or greater than 10.0 µm, the electrical insulating properties of the first aluminite layer 28 can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component 20.

[0084] The bicycle component 20 further comprises the non-metallic component 30, which is provided on the first aluminite layer 28. Accordingly, a bicycle composite component can be provided that comprises the aluminum alloy and the non-metallic material, while the colored aluminite layer can be adequately formed on the bicycle component 20.

[0085] The non-metallic component 30 is electrically conductive. Accordingly, a bicycle composite component can be provided that includes the aluminum alloy and the electrically conductive non-metallic material, while the colored aluminum layer on the bicycle component 20 can be sufficiently formed.

[0086] The non-metallic component 30 is made of carbon fiber reinforced plastic. Accordingly, a bicycle composite component can be provided that incorporates the aluminum alloy and the lightweight carbon fiber reinforced plastic with high mechanical strength, while the colored aluminum layer on the bicycle component 20 can be adequately formed.

[0087] The non-metallic component 30 is made of conductive resin. Accordingly, a bicycle composite component can be provided that includes the aluminum alloy and the non-metallic component 30 made of conductive resin, while the colored aluminum layer on the bicycle component 20 can be sufficiently formed.

[0088] The bicycle component 20 further comprises the second aluminite layer 34, which is provided on the base component 22. Accordingly, a bicycle composite component can be provided which, in addition to the first aluminite layer 28 with electrical insulating properties, has the second aluminite layer 34, which is used as a colored aluminite layer.

[0089] The bicycle component 20 further comprises the dye compound 40, which is fixed to the second aluminite layer 34. Accordingly, a bicycle composite component can be provided which, in addition to the first aluminite layer 28 with electrical insulating properties, comprises the second aluminite layer 34 colored with the dye compound 40.

[0090] Since the bicycle chainring 12 incorporates the bicycle component 20, the first aluminite layer 28 can be given sufficient electrical insulating properties. Thus, the bicycle chainring 12, on which a colored aluminite layer may be formed, can be provided even if the bicycle component 20 is combined with a non-metallic, electrically conductive material.

[0091] Since the bicycle composite chainring 12 has the bicycle component 20, the first aluminite layer 28 can be given sufficient electrical insulating properties. Thus, the bicycle composite chainring, on which a colored aluminite layer may be formed, can be provided even if the bicycle component 20 is combined with a non-metallic material that is electrically conductive.

[0092] The non-metallic component 30 is attached to the base component 22 via the first aluminum layer 28 by means of the integral forming process. The integral forming process improves the productivity of the bicycle component 20. Thus, a bicycle composite component can be provided that is preferred for mass production and in which the non-metallic component 30 adheres securely to an aluminum base material.

[0093] The non-metallic component 30 is attached to the base component 22 via the first aluminum layer 28 by means of a thermocompression bonding process. Accordingly, a bicycle composite component can be provided in which the non-metallic material, made of a prepreg material, is securely bonded to an aluminum base material.

[0094] In the bicycle component 20, the first aluminum layer 28 is provided on the base component 22. The first aluminum layer 28 has an electrical resistance equal to or greater than 10 3 Ω is. Due to the first aluminite layer 28 with the high electrical resistance, an aluminum base material on which a colored aluminite layer can be formed can be provided, even if the bicycle component 20 is combined with a non-metallic material that is electrically conductive.

[0095] Since the electrical resistance of the first aluminum layer 28 is equal to or higher than 10 4If the Ω is higher, the electrical insulating properties of the first aluminite layer 28 can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component 20.

[0096] Since the electrical resistance of the first aluminum layer 28 is equal to or higher than 10 5 If the Ω is higher, the electrical insulating properties of the first aluminite layer 28 can be further improved. This makes it easier to form the colored aluminite layer on the bicycle component 20.

[0097] The non-metallic component 30 has an electrical resistance that is lower than the electrical resistance of the first aluminite layer 28. Due to the first aluminite layer 28 having an electrical resistance that is higher than the electrical resistance of the non-metallic material, an aluminum base material on which a colored aluminite layer can be formed can be provided, even when the bicycle component 20 is combined with a non-metallic material that is electrically conductive.

[0098] Since the bicycle chainring 12 has the bicycle component 20, due to the first aluminite layer 28 with the high electrical resistance, a bicycle chainring can be provided which has an aluminum base material on which a colored aluminite layer can be formed, even if the bicycle component 20 is combined with a non-metallic material that is electrically conductive.

[0099] Since the bicycle composite chainring 12 has the bicycle component 20, due to the first aluminite layer 28 with the high electrical resistance, the bicycle composite chainring 12 can be provided, which has a composite material on which a colored aluminite layer can be formed, even when the bicycle component 20 is combined with a non-metallic material that is electrically conductive.

[0100] In the bicycle component 20, the first aluminite layer 28 is provided on the base component 22 in the first area AR1. The second aluminite layer 34 is provided on the base component 22 in the second area AR2, which differs from the first area AR1. The first aluminite layer 28 has sufficient electrical insulating properties. Thus, an aluminum base material can be provided with which a colored aluminite layer can be formed as the second aluminite layer 34, which is located in a different position than the first aluminite layer 28, even if the bicycle component 20 is combined with a non-metallic, electrically conductive material.

[0101] The structure of bicycle component 20 can be applied to other bicycle components. For example, as in Fig. As can be seen in Figure 21, the structure of the bicycle component 20 is applied to a bicycle wheel 210. The bicycle wheel 210 includes the bicycle component 20. Specifically, the bicycle wheel 210 includes a bicycle hub assembly 212, a rim 214, and spokes 216. The rim 214 is connected to the bicycle hub assembly 212 via the spokes 216. As shown in Figure 21, the structure of the bicycle component 20 is applied to a bicycle wheel 210. Fig.As shown in Figure 22, the rim 214 has a sliding part 214A and a coupling part 214B. Brake pads (not shown) of a bicycle brake can slide on the sliding part 214A. The coupling part 214B is coupled to the spokes 216 and arranged radially inside the sliding part 214A. The first area AR1 and the second area AR2 are defined on the rim 214. The first area AR1 is defined on the coupling part 214B. The second area AR2 is defined on the sliding part 214A. The first area AR1 is arranged radially inside the second area AR2. The rim 214 of the bicycle wheel 210 comprises a base component made of aluminum, a first aluminum layer provided on the base component, a second aluminum layer provided on the base component, and a non-metallic component provided on the first aluminum layer. The first aluminum layer is provided on the base component in the first area AR1.The second aluminite layer is provided on the base component in the second region AR2, which differs from the first region AR1. The non-metallic component is provided on the base component in the first region AR1 and, in the illustrated embodiment, is made of a carbon fiber reinforced plastic. The non-metallic material, the first aluminite layer, and a portion of the base component form the coupling element 214B. The second aluminite layer and another portion of the base component form the sliding element 214A.

[0102] As used herein, the term "comprehensive" and its derivatives are intended to be open terms that specify, but do not exclude, the presence of the cited features, elements, components, groups, integers, and / or steps. This concept also applies to words with similar meanings, such as the terms "exhibit," "contain," and their derivatives.

[0103] The terms “component”, “area”, “section”, “part”, “element”, “body” and “structure” can have the dual meaning of one part or several parts when used in the singular.

[0104] The ordinal numbers cited in the present application, such as "first" and "second," are merely descriptive and have no other meaning, such as indicating a specific order or the like. Moreover, for example, the expression "first element" does not in itself imply the existence of a "second element," and the expression "second element" does not in itself imply the existence of a "first element."

[0105] As used herein, the term “two” can encompass not only a configuration in which two elements have the same shape or structure, but also a configuration in which two elements have different shapes or structures.

[0106] Finally, by expressions of such degree as "essentially", "about" and "approximately", as used herein, a reasonable degree of deviation from the modified expression is to be understood such that the final result is not significantly altered.

[0107] It is obvious that, in light of the above teachings, numerous modifications and variations of the present invention are possible. It is therefore understood that, within the scope of the appended claims, the invention can also be implemented differently than specifically described herein. For example, the bicycle component of the present invention can be applied to other bicycle components. REFERENCE MARK LIST A1 central axis AR1 first area AR2 second area BL1, BL2 boundary lines D11 Rotary drive direction D2 Axis direction F1 Rotary Drive Force LN1 thick dashed line LN2 thick dashed line 10 bicycle cranks 12 bicycle chainring 14 bicycle chainring 20 bicycle components 22 Basic component 24 ring-shaped part 26 sprocket teeth 28 first aluminum layer 30 non-metallic component 32 through holes 34 second aluminum layer 36 second surface 38 pores 40 dye compound 42 dye particles 44 Sealing layer 210 bicycle wheel 212 Bicycle hub assembly 214 rim 216 spokes 214A Sliding part 214B Coupling part

Claims

[1] Bicycle component (20), comprising: a basic component (22) made of an aluminium alloy, a first aluminite layer (28) provided on the base component (22), wherein the first aluminite layer (28) has a thickness equal to or greater than 1.0 µm, wherein the first aluminite layer (28) is provided on the base component in a first region (AR1) and the first aluminite layer (28) is not provided in a second region (AR2) which differs from the first region (AR1), a second aluminite layer (34) provided on the base component, wherein the second aluminite layer (34) is provided on the base component in the second area (AR2), which differs from the first area (AR1), and a non-metallic component (30) provided on the first aluminite layer (28), wherein the non-metallic component (30) is electrically conductive. [2] Bicycle component (20) according to claim 1, wherein the thickness of the first aluminite layer (28) is equal to or greater than 2.5 µm. [3] Bicycle component (20) according to claim 1 or claim 2, wherein the thickness of the first aluminite layer (28) is equal to or greater than 5.0 µm. [4] Bicycle component (20) according to one of the preceding claims, wherein the thickness of the first aluminite layer (28) is equal to or greater than 10.0 µm. [5] Bicycle component (20) according to one of the preceding claims, wherein the non-metallic component (30) is made of a carbon fiber reinforced plastic. [6] Bicycle component (20) according to any one of claims 1 to 4, wherein the non-metallic component (30) is made of a conductive resin. [7] Bicycle component (20) according to one of the preceding claims, further comprising: a dye compound (40) that is fixed to the second aluminite layer (34). [8] Bicycle component (20) according to one of claims 1 to 4, wherein the non-metallic component (30) comprises a resin and the non-metallic component (30) is attached to the base component via the first aluminum layer (28) by an integral forming process. [9] Bicycle component (20) according to claim 5, wherein the non-metallic component (30) contains a resin and the non-metallic component (30) is attached to the base component via the first aluminite layer (28) by a thermocompression bonding process. [10] Bicycle chain wheel (12, 14), comprising: the bicycle component (20) according to one of the preceding claims. [11] Bicycle composite chainring, comprising: the bicycle component (20) according to one of claims 1 to 4. [12] Bicycle wheel (210), having: the bicycle component (20) according to one of claims 1 to 4. [13] Bicycle component (20), comprising: A basic component (22) made of an aluminium alloy, A first aluminite layer (28) provided on the base component (22), wherein the first aluminite layer (28) has an electrical resistance equal to or greater than 10 3 Ω is, wherein the first aluminite layer (28) is provided on the base component in a first area (AR1) and the first aluminite layer (28) is not provided in a second area (AR2) which differs from the first area (AR1), a second aluminite layer (34) provided on the base component, wherein the second aluminite layer (34) is provided on the base component in the second area (AR2), which differs from the first area (AR1), and a non-metallic component (30) provided on the first aluminite layer (28), wherein the non-metallic component (30) is electrically conductive. [14] Bicycle component (20) according to claim 13, wherein the electrical resistance of the first aluminite layer (28) is equal to or higher than 10 4 Ω is. [15] Bicycle component (20) according to claim 13, wherein the electrical resistance of the first aluminite layer (28) is equal to or higher than 10 5 Ω is. [16] Bicycle component (20) according to one of claims 13 to 15, wherein the non-metallic component (30) is made of a carbon fiber reinforced plastic. [17] Bicycle component (20) according to one of claims 13 to 15, wherein the non-metallic component (30) is made of a conductive resin. [18] Bicycle component (20) according to claim 13, further comprising: a dye compound (40) that is fixed to the second aluminite layer (34). [19] Bicycle component (20) according to any one of the preceding claims 13 to 17, wherein the non-metallic component (30) has an electrical resistance that is smaller than the electrical resistance of the first aluminum layer (28). [20] Bicycle component (20) according to one of claims 13 to 15, wherein the non-metallic component (30) contains a resin and the non-metallic component (30) is attached to the base component via the first aluminum layer (28) by an integral forming process. [21] Bicycle component (20) according to one of claims 13 to 15, wherein the non-metallic component (30) contains a resin and the non-metallic component (30) is attached to the base component via the first aluminite layer (28) by a thermocompression bonding process. [22] Bicycle chain wheel (12, 14), comprising: the bicycle component (20) according to claim 13. [23] Bicycle composite chainring, comprising: the bicycle component (20) according to claim 13. [24] Bicycle wheel (210), having: the bicycle component (20) according to claim 13.

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