Braking system for bicycle

Abstract

The present invention relates to a brake system for a bicycle. An example brake caliper includes an outboard caliper portion to be disposed inside a frame of the bicycle. The outboard caliper portion includes an outboard caliper body and an outboard brake pad fixed relative to the outboard caliper body. The brake caliper also includes an inboard caliper portion coupled to the outboard caliper body. When the brake caliper is coupled to the bicycle, the inboard caliper portion is disposed inside the outboard caliper portion. The inboard caliper portion includes an inboard caliper body and an inboard brake pad movable relative to the inboard caliper body.

Description

[0001] This invention application is a divisional application with application number 202111552738.5, invention name “Brake rotor for bicycle” and application date December 17, 2021. Technical Field

[0002] The present disclosure relates generally to bicycle components and, more particularly, to brake calipers and rotors for bicycles. Background Art

[0003] Bicycles and other human-powered vehicles often include disc brakes. Disc brakes include a brake rotor and a brake caliper. The brake rotor is usually mounted to a hub on the wheel of the bicycle, while the brake caliper is mounted to a fixed part of the bicycle, such as the frame. When the brake caliper is actuated, the brake caliper moves one or more brake pads into engagement with the brake rotor, which slows the brake rotor and, therefore, reduces the speed of the bicycle. Summary of the invention

[0004] An example brake rotor for a bicycle includes a bracket for coupling to a hub of the bicycle. The brake rotor also includes a brake track having a braking surface to be engaged by a brake pad. The brake track is disposed radially outward of the bracket. The brake track has a first thickness, and the bracket has a second thickness greater than the first thickness. The brake rotor has an axis of rotation defining a coordinate reference or datum. The brake track is coupled to the bracket such that the brake track can move axially relative to the bracket while being constrained radially and circumferentially relative to the bracket.

[0005] An example brake rotor for a bicycle includes a bracket to be coupled to a hub of the bicycle. The bracket has an arm with an end. The end has a protrusion extending in a circumferential direction. The brake rotor also includes a brake track having a braking surface to be engaged by a brake pad. The brake rotor has an axis of rotation defining a coordinate reference or datum. The brake track is disposed radially outward of the bracket. The brake track has an inner peripheral edge with a notch. The end of the arm is disposed in the notch. The brake track is axially slidable on the end. The notch of the brake track is at least partially defined by a lip that is disposed radially inwardly relative to the protrusion of the end to radially constrain the brake track relative to the bracket.

[0006] An example hub assembly for a bicycle includes a hub having a spoke attachment flange, a frame attachment section, and a first spline interface between the spoke attachment flange and the frame attachment section. The hub assembly also includes a brake rotor disposed on the hub. The hub and the brake rotor are rotatable about a rotational axis defining a coordinate reference or datum. The brake rotor includes a bracket and a brake track coupled to the bracket. The bracket has a second spline interface engaged with the first spline interface. The first spline interface has a greater thickness than the second spline interface. The brake rotor is axially movable between the spoke attachment flange and the frame attachment section on the second spline interface of the hub.

[0007] An example brake caliper for a bicycle includes an outboard caliper portion to be disposed inside a frame of the bicycle. The outboard caliper portion includes an outboard caliper body and an outboard brake pad fixed relative to the outboard caliper body. The brake caliper also includes an inboard caliper portion coupled to the outboard caliper body. When the brake caliper is coupled to the bicycle, the inboard caliper portion will be disposed inside the outboard caliper portion. The inboard caliper portion includes an inboard caliper body and an inboard brake pad movable relative to the inboard caliper body.

[0008] An example front fork for a bicycle includes a first tube having a first wheel attachment portion, a second tube spaced apart from the first tube, wherein the second tube has a second wheel attachment portion, and a brake caliper disposed on an inner side of the first tube.

[0009] An example disc brake for a bicycle includes a brake rotor for coupling to the bicycle and capable of rotating about an axis of rotation. The brake rotor includes a bracket to be coupled to a hub of the bicycle and a brake track having a braking surface. The brake track is disposed radially outward of the bracket. The brake track is coupled to the bracket so that the brake track can move axially relative to the bracket. An example disc brake also includes a brake caliper for coupling to the bicycle relative to the brake rotor. The brake caliper includes a body, a first brake pad fixed relative to the body, and a second brake pad movable relative to the body so that when the brake caliper is actuated, the second brake pad engages the brake track and moves the brake track into engagement with the first brake pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a side view of an example bicycle that may employ any of the example brake rotors, hub assemblies, and / or other components disclosed herein.

[0011] Figure 2Aand Figure 2B is a perspective view of the opposite side of an example brake rotor constructed in accordance with the teachings of the present disclosure.

[0012] Figure 3 yes Figure 2A and Figure 2B Side view of an example brake rotor.

[0013] Figure 4 yes Figure 2A Magnified view of a leaderboard in .

[0014] Figure 5 yes Figure 3 Magnified view of a leaderboard in .

[0015] Figure 6 It is along Figure 3 The line AA in Figure 2A and Figure 2B A cross-sectional view of an example brake rotor.

[0016] Fig. 7A , Figure 7B and Figure 7C yes Figure 6 , showing an example brake track axially moved to three different positions.

[0017] Figure 8 yes Figure 2A and Figure 2B A side view of an example brake rotor and an example brake caliper.

[0018] Fig. 9 yes Figure 8 End view of an example brake rotor and an example brake caliper.

[0019] Fig. 10A and Fig. 10B is a perspective view of the opposite side of an example brake rotor constructed in accordance with the teachings of the present disclosure.

[0020] Fig.11 yes Fig. 10A and Fig. 10B Side view of an example brake rotor.

[0021] Fig.12 yes Fig. 10A and Fig. 10B Exploded view of an example brake rotor.

[0022] Fig.13 Can be combined Fig. 10A and Fig. 10B A perspective view of an example pin and an example clip of an example brake rotor implementation.

[0023] Fig.14A and Fig. 14B They are Fig. 10A and Fig. 10B Magnified view of a leaderboard in .

[0024] Fig.15 yes Fig.11 Magnified view of a leaderboard in .

[0025] Fig.16 It is along Fig.11 The line BB in Fig. 10A and Fig. 10B A cross-sectional view of an example brake rotor.

[0026] Fig.17A , Fig. 17B and Fig. 17C yes Fig.16 , showing an example brake track axially moved to three different positions.

[0027] Fig.18A and Fig.18B yes Fig. 10A and Fig. 10B A perspective view of the opposite side of an example brake rotor including an example spring to bias an example brake track in a circumferential direction.

[0028] Fig.19A and Fig.19B They are Fig.18A and Fig.18B Magnified view of a leaderboard in .

[0029] Fig. 20 Is from Fig.18A and Fig.18B A perspective view of an example spring for an example brake rotor.

[0030] Fig.21 yes Fig.18A and Fig.18B Side view of an example brake rotor.

[0031] Fig. 22 It is along Fig.21 The line CC in Fig.18A and Fig.18B A cross-sectional view of an example brake rotor.

[0032] Fig.23 yes Fig. 22 Magnified view of a leaderboard in Figure 1.

[0033] Fig.24 yes Fig. 22 A zoomed-in view of another callout in .

[0034] Fig.25A and Fig.25B is a perspective view of the opposite side of an example brake rotor constructed in accordance with the teachings of the present disclosure.

[0035] Fig.26 yes Fig.25A and Fig.25B Exploded view of an example brake rotor.

[0036] Fig. 27 yes Fig.26 An enlarged view of one of the lead callouts in FIG. 1 shows an example end of an example arm of an example bracket.

[0037] Fig.28 yes Fig.26 Another callout-marked enlarged view in FIG. 1 shows an example positioning portion with a heat dissipation element.

[0038] Fig.29A , Fig.29B and Fig.29C yes Fig.25B The lead-in marked enlarged view in FIG. 1 shows an example sequence of axial movement of an example brake track between two stops.

[0039] Fig.30 yes Fig.25A and Fig.25B Side view of an example brake rotor.

[0040] Fig.31 It is along Fig.30 The line DD in Fig.25A and Fig.25B A cross-sectional view of an example brake rotor.

[0041] Fig.32A , Fig.32B and Fig.32C yes Fig.31 , showing an example locating portion and an example brake track axially moved into three different positions.

[0042] Fig.33 It is along Fig.30 The line EE in Fig.25A and Fig.25B A cross-sectional view of an example brake rotor.

[0043] Fig.34 yes Fig.33 Magnified view of a leaderboard in .

[0044] Fig.35A and Fig.35B is a perspective view of the opposite side of an example brake rotor constructed in accordance with the teachings of the present disclosure.

[0045] Fig.36 yes Fig.35A and Fig.35B Exploded view of an example brake rotor.

[0046] Fig.37 yes Fig.36 An enlarged view of one of the lead callouts in FIG. 1 shows an example end of an example arm of an example bracket.

[0047] Fig.38 yes Fig.36 Another callout enlarged view of FIG. 1 shows an example stop.

[0048] Fig.39A , Fig.39B and Fig.39C yes Fig.35B An enlarged view of the lead-out annotation in is shown showing an example sequence of axial movement of an example brake track between two stops.

[0049] Fig.40 yes Fig.35A and Fig.35B Side view of an example brake rotor.

[0050] Fig.41 It is along Fig.40 The line FF in Fig.35A and Fig.35B A cross-sectional view of an example brake rotor.

[0051] Fig.42A , Fig.42B and Fig.42C yes Fig.41 , showing an example stop and brake track moved axially to three different positions.

[0052] Fig.43 It is along Fig.40 The line GG in Fig.35A and Fig.35B A cross-sectional view of an example brake rotor.

[0053] Fig.44 yes Fig.43 Magnified view of a leaderboard in .

[0054] Fig.45 is a perspective view of an example rotor constructed in accordance with the teachings of the present disclosure.The example brake rotor includes a center-lock type bracket.

[0055] Fig.46 is a perspective view of an example hub assembly constructed in accordance with the teachings of the present disclosure. The example hub assembly includes an example hub and an example brake rotor.

[0056] Fig.47 yes Fig.46 0026] A side view of an example brake rotor and an example hub.

[0057] Fig.48 It is along Fig.47 Cross-sectional view of an example brake rotor and an example hub taken along line HH.

[0058] Fig.49A , Fig.49B and Fig.49C yes Fig.48 , showing an example brake rotor axially moved to three different positions.

[0059] Fig.50 It is along Figure 3 The line AA in Figure 2A and Figure 2B Another cross-sectional view of an example brake rotor.

[0060] Fig.51 yes Fig.50 Magnified view of a leaderboard in .

[0061] Fig.52 is along Fig.47 The line HH intercepts Fig.46 A cross-sectional view of an example-only brake rotor.

[0062] Fig.53 yes Fig.52 Magnified view of a leaderboard in .

[0063] Fig.54 Yes Figure 1 A perspective view of an example rear hub assembly and an example rear brake with an example rear brake caliper and an example brake rotor on an example bicycle.

[0064] Fig.55 yes Fig.54 Exploded view of an example rear hub assembly and an example rear brake.

[0065] Fig.56 yes Fig.54 An exploded view of an example rear brake caliper.

[0066] Fig.57 yes Fig.54 An example of a top view of a rear brake caliper.

[0067] Fig.58 It is along Fig.57 A cross-sectional view of an example rear brake caliper taken along line II.

[0068] Fig.59 The example bike Fig.54 A top view of an example rear hub assembly and an example rear brake.

[0069] Fig.60 The example bike Fig.54 Side view of an example rear hub assembly and an example rear brake.

[0070] Fig.61 yes Fig.54 An example of an outboard side view of a rear brake caliper.

[0071] Fig.62 yes Fig.54 An end view of an example rear brake caliper.

[0072] Fig.63A yes Fig.54 An example of an inboard side view of a rear brake caliper.

[0073] Fig.63B It is along Fig.63A A cross-sectional view of an example rear brake caliper taken along line JJ.

[0074] Fig.64A It is along Fig.60 A cross-sectional view of an example rear hub assembly and an example rear brake on an example bicycle taken along line KK.

[0075] Fig.64B yes Fig.64A Magnified view of the lead-in annotation in .

[0076] Fig.64C yes Fig.64A Another enlarged view of the leaderboard in .

[0077] Fig.65 Yes, you can Figure 1 A perspective view of an example front fork implemented on an example bicycle.

[0078] Fig.66 and Fig.67 Yes, you can Fig.65 A perspective view of an example down tube assembly implemented in an example front fork. Fig.66 and Fig.67 An example front brake caliper is shown coupled to a tube of an example down tube assembly.

[0079] Fig.68 and Fig.69 yes Fig.66 and Fig.67 Exploded view of an example down tube assembly and an example front brake caliper.

[0080] Fig.70 yes Fig.66and Fig.67 A rear view of an example down tube assembly and an example front brake caliper.

[0081] Fig.71 It is along Fig.70 A cross-sectional view of an example down tube assembly taken along line LL.

[0082] Fig.72 and Fig.73 Yes, you can Fig.65 A perspective view of another example down tube assembly implemented in an example front fork of FIG. Fig.72 and Fig.73 Another example front brake caliper is shown coupled to a tube of an example down tube assembly.

[0083] Fig.74 and Fig.75 yes Fig.72 and Fig.73 Exploded view of an example down tube assembly and an example front brake caliper.

[0084] Fig.76 yes Fig.72 and Fig.73 A rear view of an example down tube assembly and an example front brake caliper.

[0085] Fig.77 It is along Fig.76 A cross-sectional view of an example down tube assembly taken along line MM.

[0086] Fig.78 Yes, you can Fig.65 A perspective view of another example down tube assembly implemented in an example front fork of FIG. Fig.78 Another example front brake caliper is shown coupled to a tube of an example down tube assembly.

[0087] Fig.79 and Fig.80 yes Fig.78 Exploded view of an example down tube assembly and an example front brake caliper.

[0088] The drawings are not to scale. Instead, the thickness of layers or regions may be exaggerated in the drawings. Generally, the same reference numerals will be used throughout the drawings and the accompanying written description to refer to the same or similar parts.

[0089] Descriptors "first," "second," "third," etc., are used herein to identify multiple elements or components that can be mentioned separately. Unless otherwise specified or understood based on the context of their use, such descriptors are not intended to imply any meaning of priority or order in time, but are merely labels that refer to multiple elements or components individually for ease of understanding the disclosed examples. In some examples, the descriptor "first" may be used to refer to an element in a specific embodiment, while the same element may be referred to by different descriptors such as "second" or "third" in the claims. In such instances, it should be understood that such descriptors are used only for ease of reference to multiple elements or components. DETAILED DESCRIPTION

[0090] The brakes on modern bicycles, including electric bicycles (e-bikes), have evolved to utilize technology from automotive braking systems such as disc brakes. Disc brakes have greater stopping power and deceleration control than the traditional rim and cable pull brakes used in the past. The front brake and / or the rear brake on a bicycle may be implemented as a disc brake.

[0091] A disc brake includes a brake rotor and a brake caliper. The brake rotor is typically coupled to a hub on the wheel of the bicycle and rotates with the hub. The brake caliper is mounted to a stationary part of the bicycle near the brake rotor. When the brake caliper is actuated, the brake caliper moves two brake pads into engagement with the outer surface of the brake rotor. The friction between the brake pads and the brake rotor slows the brake rotor, thereby reducing the speed of the wheel and, therefore, the speed of the bicycle.

[0092] It is undesirable for the brake rotor to contact the brake pads when not braking because this creates wasted rolling friction, which slows the bicycle and causes unnecessary wear on the brake rotor and brake pads. This contact may also cause undesirable noise (e.g., brake squeal). Current disc brake assemblies require a laborious adjustment process to ensure that the brake rotor is centered between the brake pads to avoid non-braking contact. Typically, the brake rotor requires multiple shims or spacers to assist in this centering adjustment.

[0093] Also, as the brake pads wear over time, the pistons of the brake calipers automatically advance themselves to compensate for the worn pad material. However, the self-advancing pistons rarely advance equally on one side as on the other. As such, the brake pads engage the two sides of the brake rotor at different times and / or with different forces. This results in unbalanced braking forces, undesirable brake friction, and uneven pad wear. Often, the brake rotors need to be adjusted to realign the brake rotors between the brake pads, and the cycle repeats.

[0094] As used herein, the terms "axial", "axially" and other variations mean directions that are coincident with or parallel to the axis of rotation, which may be defined by the brake rotor and / or hub. The terms "radial", "radially" and other variations refer to directions extending orthogonally from the axis of rotation, and the terms may include radially inward directions toward the axis of rotation or radially outward directions away from the axis of rotation. The terms "circumferential", "circumferentially" and other variations mean directions extending concentrically around the axis of rotation. As used herein, the term "inboard" refers to an axial direction toward a center plane of a wheel or other rotatable object. As used herein, the term "outboard" refers to an axial direction away from a center plane of a wheel or other rotatable object.

[0095] Disclosed herein is an example self-centering (or self-centering) or floating brake rotor that at least addresses the above-mentioned shortcomings. The example brake rotor disclosed herein can move in the axial direction, which allows the brake rotor to find its center position (centering position) between the brake pads each time the brake pads are applied. When the brake pads are retracted, the brake rotor maintains its center position without the need for a spring or biasing device. The example brake rotor disclosed herein can move axially by a sufficient amount to account for brake assembly size changes and brake pad wear. Therefore, when the brake pads wear over time, the brake rotor readjusts itself to a new center position. This reduces or eliminates the need for precisely adjusting the position of the brake rotor when the brake rotor is initially installed and over time, which is required for conventional brake rotors. The example brake rotor disclosed herein also reduces or eliminates unbalanced braking forces and unnecessary braking friction, thereby improving braking performance and extending the life cycle of the brake components. Although the example brake rotor can move in the axial direction, the example brake rotor is constrained in the radial and circumferential directions, which ensures that the braking surface of the brake rotor remains radially aligned with the brake pads and the braking load is transmitted to the hub. Thus, the example brake rotors disclosed herein benefit from being radially and circumferentially aligned with the brake pads, but can move in an axial direction to ensure that the brake rotor remains centered between the brake pads. In some examples disclosed herein, only a portion of the brake rotor can move axially, such as the brake track. In other examples disclosed herein, the entire brake rotor can move axially on the hub. The axial movement disclosed herein can be considered to be unbiased friction sliding, meaning there is no spring bias, but there is some frictional resistance.

[0096] An example brake rotor disclosed herein includes a bracket attached to a hub of a bicycle and a brake track disposed radially outside the bracket and coupled to the bracket. The bracket has a set of radially extending arms having ends. The arms have ends disposed in recesses formed on the inner peripheral edge of the brake track. The brake track is able to slide axially on these ends and is therefore movable axially relative to the bracket. The bracket is wider than the brake track. In this way, the brake track can slide axially on the bracket without extending beyond the sides of the bracket. The end has a unique shape or profile that matches the shape of the recess. For example, the end can be keyed and / or mortised to the track. This shape enables the brake track to move axially relative to the bracket, but constrains or limits the brake track from moving in radial and circumferential directions relative to the bracket.

[0097] The sliding interface between the brake track and the bracket generates a friction force that is a result of the coefficient of friction between the two bodies. The friction force is of such an amount that when engaged by a brake pad, the brake track can move axially (e.g., slide) on the bracket to re-center itself, but when the brake pad is released, the brake track remains in substantially the same axial position on the bracket. In other words, when the brake pad is applied, the net force of the brake pad (if unbalanced) exceeds the friction force and moves the brake track axially until the friction exceeds the net force, thereby centering the brake track between the brake pads. When the pads are retracted and no braking force is applied, the friction force is sufficient to maintain the brake track in the same axial position, so the brake track remains centered until the brake pad is applied again. Therefore, the brake track can move axially without the need for any spring or biasing device.

[0098] In some examples disclosed herein, the brake track is unconstrained in the axial direction. In this way, the brake track can be completely removed from the bracket by sliding the brake track axially relative to the bracket. However, when installed on the bicycle, the brake pads prevent the brake track from moving axially beyond a certain amount. In some examples, the brake track can move axially on the bracket at least the entire range or distance between the brake pads when the brake pads are in the open position. In other words, when the brake pads are in their retracted or open state, the brake rotor can move axially to any position between the two brake pads. In some examples, the range of axial movement is even greater than the original distance between the brake pads, so that when the brake pads wear and their distance increases, the brake rotor can move through the entire distance between the brake pads.

[0099] In some examples disclosed herein, the brake rotor includes one or more stops that limit axial movement in one or two axial directions beyond a certain amount. The stops can be coupled to a brake track, a bracket, and / or another structure adjacent to the brake rotor. For example, in some example brake rotors disclosed herein, one or more pins are disposed in an opening formed in the brake rotor. Each pin has a head (a first stop) on one side of the brake rotor and a clip (a second stop) on the opposite side of the brake rotor. The head and the pin overlap the brake track in the axial direction, thereby limiting the axial movement of the brake track and defining the outer boundary of the axial movement.

[0100] In some examples disclosed herein, the brake rotor includes one or more locating portions having a heat dissipation element (e.g., a cooling fin) coupled to one side of the brake track. The locating portion helps dissipate heat from the brake track. For example, the locating portion can be made of aluminum. The end of the arm of the bracket is disposed in a recess formed in the locating portion. The end of the arm has a tongue extending upward. When the brake track moves a certain amount in a first axial direction, the tongue acts as a first stop, and when the brake track moves a certain amount in a second axial direction, the locating portion acts as a second stop.

[0101] The brake track can be designed to be movable axially by any amount. The allowed axial movement distance is greater than the pure tolerance from the rigid connection as seen in known brake rotors. In some examples, the brake track can be movable in the axial direction relative to the bracket by a distance of at least 0.1 millimeters (mm) (or ±0.05 mm from the center position). In some examples, the brake rotor is designed to allow a specific axial movement based on a factor of the thickness of the brake track. For example, the brake track can be movable in the axial direction by at least 0.1X of the thickness of the brake track. For example, if the brake track is 1.5 mm thick, the brake track can be movable in the axial direction by at least 0.15 mm. In other examples, more alignment ranges can be desired, and the brake rotor is designed so that the brake track can be movable by more or less than 0.1 mm or 0.1X of the thickness of the brake track. For example, the brake track can be movable by at least 3 mm (or ±1.5 mm from the center position). As another example, the brake track can be movable a distance that is at least 150% of the thickness of the brake track (or the distance is ±75% of the thickness of the brake track from the center position). In some examples disclosed herein, the brake track can be movable within a center range, which is the distance or range between two axial limits. The center range can be any distance greater than the thickness of the brake track, which ensures that the brake track can move axially relative to the bracket. In some examples, the brake rotor can be configured to have a center range that is a specific factor of the thickness of the brake track, for example, 1.1x the thickness of the brake track, 1.2x the thickness of the brake track, 1.3x the thickness of the brake track, etc. In some examples, the center range is the same as the thickness of the portion of the bracket on which the brake track slides. In some examples, the center range is greater than a single brake pad wear range.

[0102] In some examples disclosed herein, the brake rotor can be axially movable on the hub. For example, a hub assembly is disclosed herein, which includes a hub and a brake rotor. The hub has a first spline interface, and the bracket of the brake rotor has a central opening defined by a second spline interface. The brake rotor is arranged on the hub, wherein the hub extends through the central opening so that the second spline interface of the bracket engages (e.g., meshes) with the first spline interface of the hub. In some examples, the first spline interface may be wider or deeper than the second spline interface. This enables the bracket (and therefore the brake rotor) to slide axially on the hub for self-centering. In some examples, the brake rotor is not constrained in the axial direction. In other examples, the hub assembly may include one or more stops to limit the axial movement of the brake rotor to a certain amount.

[0103] Now turning to the attached figure, Figure 1An example of a human-powered vehicle that may implement the example brake rotors and related components disclosed herein is shown. In this example, the vehicle is a possible type of bicycle 100, such as a mountain bike. In the example shown, the bicycle 100 includes a frame 102 and a front wheel 104 and a rear wheel 106 rotatably coupled to the frame 102. In the example shown, the front wheel 104 is coupled to the front end of the frame 102 via a front fork 108. In some examples, the front fork 108 includes one or more suspension components (e.g., shock absorbers) to absorb shock or vibration. The front wheel 104 is rotatably coupled to the front fork 108 via a front hub 110. The rear wheel 106 is coupled to the frame 102 to support the rear end of the frame 102. The rear wheel 106 is rotatably coupled to the frame 102 via a rear hub 112. In some examples, one or more suspension components may be coupled between the rear wheel 106 and the frame 102 to absorb shock or vibration. The front and / or forward riding direction or orientation of the bicycle 100 is determined by Figure 1 1. Thus, the forward movement direction of the bicycle 100 is indicated by the direction of the arrow A. The bicycle 100 is shown riding on a riding surface 114. The riding surface 114 may be any riding surface, such as the ground (e.g., a dirt path, a sidewalk, a street, etc.), a man-made structure above the ground (e.g., a wooden ramp), and / or any other surface.

[0104] In the illustrated example, the bicycle 100 includes a seat 116 coupled to the frame 102 (e.g., near the rear end of the frame 102 relative to the forward direction A) via a seat post 118. The bicycle 100 also includes a handlebar 120 coupled to the frame 102 and the front fork 108 (e.g., near the front end of the frame 102 relative to the forward direction A) to steer the bicycle 100. In the illustrated example, the bicycle 100 has a drive train 122 that includes a crank assembly 124. The crank assembly 124 is operably coupled to a sprocket assembly 128 via a chain 126. The sprocket assembly 128 is mounted to the rear hub 112. The crank assembly 124 includes at least one and typically two crank arms 130 and pedals 132, and at least one front sprocket or chain ring 134. The example bicycle 100 may include a rear gear changing device (e.g., a derailleur) and / or a front gear changing device to move the chain 126 through different sprockets.

[0105] Figure 1The example bicycle 100 includes an example braking system 136. The example braking system 136 can be used to reduce the speed of the bicycle 100. The example braking system 136 includes a front brake 138 for slowing the rotation of the front wheel 104 and a rear brake 140 for slowing the rotation of the rear wheel 106. In this example, the front brake 138 and the rear brake 140 are implemented as hydraulic disc brakes. The front brake 138 includes a front brake rotor 142 (sometimes referred to as a brake disc) and a front brake caliper 144. The front brake rotor 142 is coupled to the front wheel 104 on the front hub 110 and rotates with the front wheel 104. The front brake caliper 144 is coupled to the front fork 108 adjacent to the front brake rotor 142. When the front brake caliper 144 is actuated, the front brake caliper 144 moves one or more brake pads into engagement with the front brake rotor 142 to slow the front brake rotor 142 and, therefore, slow the rotation of the front wheel 104. In the illustrated example, the braking system 136 includes a front brake actuator 146 (e.g., a lever) for actuating the front brake caliper 144. The front brake actuator 146 is coupled to the handlebar 120. The front brake actuator 146 is fluidly coupled to the front brake caliper 144 via a first fluid line 148. In this example, the front brake actuator 146 is actuated by moving the front brake actuator 146 toward a grip on the handlebar 120. This actuation causes brake fluid to be pushed to the front brake caliper 144 to provide braking pressure on the front brake rotor 142. Conversely, the front brake actuator 146 is deactivated by releasing or otherwise moving the front brake actuator 146 away from the handlebar, which relieves or reduces the braking pressure of the front brake caliper 144 .

[0106] Similarly, the rear brake 140 includes a rear brake rotor 150 and a rear brake caliper 152. The rear brake rotor 150 is coupled to the rear wheel 106 via the rear hub 112 and rotates with the rear wheel 106. When the rear brake caliper 152 is actuated, the rear brake caliper 152 moves one or more brake pads into engagement with the rear brake rotor 150 to slow the rear brake rotor 150 and, therefore, slow the rotation of the rear wheel 106. Similar to the front brake actuator 146, the brake system 136 includes a rear brake actuator (not shown) that is coupled to the handlebar 120 and is used to actuate the rear brake caliper 152. The rear brake control lever is fluidly coupled to the rear brake caliper 152 via a second fluid line 154. The rear brake actuator and the rear brake caliper 152 operate similarly to the front brake actuator 146 and the front brake caliper 144.

[0107] Although in this example, the front brake 138 and the rear brake 140 are hydraulically actuated, in other examples, the front brake 138 and / or the rear brake 140 may be cable actuated. For example, the front brake actuator 146 may be coupled to the front brake caliper 144 via a cable. When the front brake actuator 146 moves toward the handlebar 120, the cable is pulled to actuate the front brake caliper 144. In the example shown, the front brake rotor 142 and the rear brake rotor 150 are disposed on the left side of the front wheel 104 and the rear wheel 106 (when facing the direction A). In other examples, the front brake rotor 142 and / or the rear brake rotor 150 may be disposed on the right side of the front wheel 104 and the rear wheel 106, respectively.

[0108] Although Figure 1 The example bicycle 100 depicted in the figure is a mountain bike, but the example brakes and related components disclosed herein can be implemented on other types of bicycles. For example, the disclosed brakes can be used for road bicycles and bicycles with mechanical (e.g., cable, hydraulic, pneumatic, etc.) and non-mechanical (e.g., wired, wireless) drive systems. The disclosed brakes can also be implemented on other types of two-wheeled, three-wheeled or four-wheeled human-powered vehicles. In addition, the example brakes can be used for other types of vehicles, such as motor vehicles (e.g., motorcycles, cars, trucks, etc.). The example brakes disclosed herein can be used together in any road or off-road conditions (e.g., hot, cold, wet, muddy, snowy, etc.).

[0109] Figure 2A and Figure 2B An example brake rotor 200 constructed in accordance with the teachings of the present disclosure is shown. The example brake rotor 200 may be Figure 1 The bicycle 100 may be implemented, for example, as a front brake rotor 142 and / or a rear brake rotor 150 . Figure 2A is a perspective view of a first side (or first face) 202 of a brake rotor 200, and Figure 2B 2 is a perspective view of a second side (or second face) 204 of the brake rotor 200 opposite the first side 202. The brake rotor 200 has a central axis 206 that forms an axis of rotation about which the brake rotor 200 rotates. The axis of rotation defines a coordinate reference for the axial, radial, and circumferential directions referred to herein.

[0110] like Figure 2A and Figure 2BAs shown, the brake rotor 200 includes a bracket 208 (sometimes referred to as a support, core, or hub mounting portion) and a brake track 210. The brake track 210 is disposed radially outward of the bracket 208. The brake track 210 is coupled (e.g., movably or slidably coupled) to the bracket 208, as disclosed in further detail herein. The brake track 210 has a braking surface to be engaged by one or more brake pads. Specifically, the brake track 210 has a first side (or first face) 212 and a second side (or second face) 214 opposite the first side 212. The first side 212 and the second side 214 form a braking surface that can be engaged by a brake pad to slow the rotation of the brake rotor 200. The brake track 210 can be constructed of a wear-resistant material that resists abrasion. The brake track 210 is constructed of a single integral component (e.g., machined, stamped, extruded, etc.) or can be constructed of multiple parts or components that are coupled together.

[0111] Bracket 208 serves as an intermediate structure to attach brake track 210 to the hub of a bicycle, such as Figure 1 The bracket 208 is provided to attach to the front hub 110 or the rear hub 112 of the bicycle 100. In particular, the bracket 208 has an outer attachment section (an example of which is disclosed in more detail herein) that is attached to the brake track 210 and an inner attachment section that is attached to the hub. In this example, the bracket 208 has a central opening 216 that receives the hub and a plurality of fastener openings 218 (in the example) for receiving fasteners (e.g., bolts, screws, rivets, etc.) to couple the brake rotor 200 to the hub. Figure 2A and Figure 2B 216 and 218 to match the corresponding fastener arrangement on the hub. The central opening 216 and the fastener openings 218 form a hub interface of the bracket 208. When the bracket 208 is attached to the hub, the bracket 208 can be axially, radially and circumferentially constrained. The bracket 208 has a first side 220 and a second side 222 opposite the first side 220. The bracket 208 can be constructed from a single integral component (e.g., machined, stamped, extruded, etc.) or can be composed of multiple parts or components coupled together.

[0112] In some examples, the brake track 210 is constructed of stainless steel. Stainless steel may be desirable due to its high wear resistance. In some examples, the brake track 210 is constructed of martensitic stainless steel. For example, the brake track 210 may be constructed of 300 series or 400 series stainless steel. In other examples, the brake track 210 may be constructed of other types of stainless steel and / or other materials (e.g., austenitic stainless steel, steel alloys, ceramics, ceramic matrix alloys, iron, carbon fiber, silicon carbide alloys, carbon / carbon, etc.). Figure 2A and Figure 2B As shown, the brake track 210 may include a plurality of openings 224 (in Figure 2A and Figure 2B ) to improve airflow and dissipate heat. In some examples, the bracket 208 is constructed of aluminum, such as 6000 series or 7000 series aluminum. Aluminum is generally lighter than stainless steel, which helps reduce the overall weight of the brake rotor 200. In other examples, the bracket 208 can be constructed of other types of aluminum and / or other materials (e.g., aluminum alloys, metal matrix aluminum, copper, beryllium, stainless steel (such as martensitic and / or austenitic steel), steel alloys, ceramics, ceramic matrix alloys, iron, carbon fiber, silicon carbide alloys, carbon / carbon, etc.).

[0113] In this example, the brake track 210 is coupled to the bracket 208 such that the brake track 210 is able to move axially relative to the bracket 208 while being radially and circumferentially constrained relative to the bracket 208. In other words, the brake track 210 can move or slide in an axial direction relative to the bracket 208, but is constrained to move in radial and circumferential directions relative to the bracket 208. This allows the brake track 210 to self-center during braking operations while still maintaining radial alignment with the brake pad. In this example, the axial direction is a direction that is coincident or parallel to the central axis 206, the radial direction is a direction that is orthogonal to the central axis 206, and the circumferential direction is a direction that extends concentrically around the central axis 206.

[0114] like Figure 2A and Figure 2B As shown, the bracket 208 includes a set of arms 226 (at Figure 2A and Figure 2B 200 ). The arms 226 may also be referred to as support members, branches, or extensions. In the example shown, the bracket 208 has twelve arms 226. However, in other examples, the bracket 208 may have more or fewer arms. The arms 226 extend generally radially outward from the center of the brake rotor 200. The outer radial ends of the arms 226 are equally spaced from each other. In this example, the arms 226 are also angled or bent (with respect to the radial direction) to allow for thermal expansion and avoid warping of the braking surface.

[0115] In the example shown, each arm 226 has an end section or end 228 (e.g., a distal end). The brake track 210 is coupled (e.g., movably coupled) to the end 228 of the arm 226, and thus coupled (e.g., movably coupled) to the bracket 208. The brake track 210 has a plurality of recesses 232 formed or otherwise included (e.g., at the distal end). Figure 2A and Figure 2B The inner peripheral edge 230 of the arm 226 is marked with a notch. The notch 232 can be referred to as a keying opening or a slot. The end 228 of the arm 226 is disposed in a corresponding one of the notches 232.

[0116] Figure 3 is a side view illustrating the first side 202 of the brake rotor 200 . Figure 4 Is from Figure 2A an enlarged view of the lead-in mark 234, and Figure 5 Is from Figure 3 An enlarged view of the lead-in mark 300. Figure 4 and Figure 5 An enlarged view of the interface between one of the arms 226 of the bracket 208 and one of the notches 232 in the brake track 210 is shown. Figure 2A and Figure 2B ) and Figure 4 and Figure 5 The arms 226 and recesses 232 shown in FIG. 2 are identical. Figure 4 and Figure 5 Any aspects disclosed with respect to the arm 226 and recess 232 shown in FIG. 2 may also be applied to other arms 226 and recesses 232. Figure 4 As shown, the bracket 208 has a greater thickness than the brake track 210. In this way, the brake track 210 can move or slide in the axial direction relative to the bracket 208 without extending beyond the side of the bracket 208. Figure 4 and 5 As shown, the end 228 of the arm 226 is disposed in a recess 232 in the brake track 210. When the brake track 210 moves axially relative to the bracket 208, the end 228 slides in the recess 232. In this example, the inner peripheral edge 230 of the brake track 210 along the recess 232 is slidably engaged with the outer peripheral edge 400 of the end 228. When the brake track 210 moves axially relative to the bracket 208, these surfaces form a sliding interface.

[0117] The example brake rotor 200 has one or more radial retention features that limit radial movement of the brake track 210 relative to the bracket 208, but still allow the brake track to move axially relative to the bracket. In this example, the radial retention features are implemented by the shape of the end 228 of the arm 226. For example, Figure 4 and Figure 5 As shown, the end 228 of the arm 226 has a protrusion 402 (e.g., an overhang or a raised portion) extending in a circumferential direction. Therefore, the end 228 has a shape or profile that increases circumferentially toward the end of the arm 226. The recess 232 has a shape that corresponds to or matches the shape of the end 228 of the arm 226. Figure 4 and Figure 5 As shown, the brake track 210 has a lip 404. The recess 232 is at least partially defined by the lip 404. The lip 404 overlaps the protrusion 402 in the radial direction. For example, Figure 5The center axis 206 ( Figure 2A and Figure 2B ) extending radially. As shown, the lip 404 is disposed radially inwardly relative to the protrusion, which radially constrains the brake track 210 relative to the bracket 208. In other words, this prevents the brake track 210 from moving radially (outwardly) relative to the bracket 208. The brake track 210 is also constrained by the arm 226 to prevent radial inward movement. The arm 226 also constrains the brake track 210 from moving circumferentially relative to the bracket 208. Therefore, the brake track 210 is constrained in both the radial and circumferential directions. This helps to ensure that the brake track 210 remains radially aligned with the brake pad. Therefore, the end 228 of the arm 226 is implemented as a retaining feature. However, in other examples, such a retaining feature can be implemented on other portions of the bracket 208 rather than on the end of the arm 226.

[0118] In the illustrated example, the ends 228 of the arms 226 are asymmetrical. However, in other examples, the ends 228 of the arms 226 may be symmetrical. For example, the second protrusion may extend in a circumferential direction opposite to the protrusion 402. In other examples, the ends 228 may have different shapes, such as a straight shape, a hexagonal shape, a star shape, a circle, a spline, etc. Although in some examples, each of the ends 228 has the same shape, in other examples, the ends 228 may have different shapes from each other.

[0119] As described above, each of the other arms 226 and corresponding recesses 232 is Figure 4 and Figure 5 The arms 226 and recesses 232 shown in FIG. 2 are identical. The brake rotor 200 can be assembled, for example, by sliding the brake track 210 onto the bracket 208 in an axial direction. For example, the brake track 210 can be placed axially adjacent to the bracket 208 by aligning the ends 228 of the arms 226 with the recesses 232. The brake track 210 can then be moved axially relative to the bracket 208 (or the bracket 208 can be moved axially relative to the brake track 210) such that the ends 228 of the arms 226 are inserted into the corresponding recesses 232.

[0120] The end 228 and the recess 232 are sized so that the contact surfaces of the brake track 210 and the bracket 208 (i.e., the outer peripheral edge 400 of the end 228 and the inner peripheral edge 230 of the recess 232) slidably engage and create a friction fit between the brake track 210 and the bracket 208. The friction created between the surfaces is of an amount that enables the brake track 210 to slide axially on the bracket 208 when engaged by a brake pad with sufficient force (e.g., 1 Newton), but is sufficient to maintain the brake track 210 in a substantially same axial position on the bracket 208 when the brake pad is released.

[0121] In this example, the sliding surfaces forming the sliding engagement interface that enables the brake track 210 to be self-centered are radially outward from the hub attachment section of the bracket 208. Specifically, the bracket 208 will be coupled to the hub, and the brake track 210 disposed radially outward of the bracket 208 can move relative to the bracket 208. However, in other examples, the sliding engagement interface that allows axial movement can be formed at the hub interface. Figures 46 to 49C An example of such a configuration is disclosed in more detail.

[0122] Figure 6 It is along Figure 3 2. A cross-sectional view of an example brake rotor 200 is shown taken along line AA of FIG. The brake track 210 is disposed radially outward of the bracket 208. Specifically, the brake track 210 is axially positioned between the first side 220 and the second side 222 of the bracket 208 (e.g., between the first side 220 and the second side 222 at an end 228 of the bracket 208).

[0123] Fig. 7A , Figure 7B and Figure 7C yes Figure 6 The enlarged view of the lead-in label 600 in FIG. 1 shows the brake track 210 in three different axial positions. Fig. 7A The brake track 210 is shown in a central position, wherein the brake track 210 is substantially axially centered on the bracket 208. The brake track 210 is movable (e.g., slidable) in an axial direction relative to the bracket 208. For example, Figure 7B The brake track 210 is shown moved in one axial direction (eg, inboard) to a first position (eg, a first extreme position), and Figure 7C The brake track 210 is shown moved in the opposite axial direction (eg, outboard) to a second position (eg, a second extreme position).

[0124] like Fig. 7A As shown, the brake track 210 has a thickness T1, and the bracket 208 (e.g., the end 228 of the arm 226) has a thickness T2 that is greater than the thickness T1 of the brake track 210. In this way, the brake track 210 can move axially relative to the bracket 208 without extending beyond the first side 220 and the second side 222 of the bracket 208, which in some examples (extending beyond the first side 220 and the second side 222 of the bracket 208) is undesirable for transferring the braking load from the brake track 210 to the bracket 208. The thickness T1 of the brake track 210 can be any thickness. In some examples, the thickness T1 of the brake track 210 is approximately 1.85 mm (e.g., ±.05 mm). In other examples, the thickness T1 of the brake track 210 can be greater or less than 1.85 mm.

[0125] In some examples, the brake track 210 can move (eg, can slide) at least 0.1 millimeter (mm) (or from 0.1 millimeter) in an axial direction relative to the bracket 208 (eg, can slide). Fig. 7A In some examples, the brake track 210 may be moved axially by a certain amount based on a factor of the thickness T1 of the brake track 210. For example, the brake track 210 may be moved in the axial direction by at least 0.1X of the thickness T1 of the brake track 210. For example, if the brake track 210 has a thickness T1 of 1.85 mm, the brake track 210 may be moved in the axial direction by at least 0.185 mm (or Fig. 7A In other examples, the brake track 210 may move more or less than 0.1 mm or 0.1X of the thickness T1 of the brake track 210. In some examples, the brake track 210 may move axially by at least 3 mm (or less than 1.5 mm). Fig. 7A As another example, the brake track 210 may be axially moved by a distance that is at least 150% of the thickness T1 of the brake track 210 (or the distance Fig. 7A The center position in is ±75% of the thickness T1 of the brake track 210).

[0126] In some examples, the brake track 210 can move within a center range CR that defines the limits of axial movement. The brake track 210 can be positioned anywhere within the center range CR. In some examples, the center range CR can be any amount greater than the thickness T1 of the brake track 210. In some examples, the center range CR is configured to be a factor greater than the thickness T1 of the brake track 210, such as 1.1x the thickness T1 of the brake track 210, 1.2x the thickness T1 of the brake track 210, 1.3x the thickness T1 of the brake track 210, etc. For example, if the brake track 210 has a thickness T1 of 1.85 mm, the center range CR can be any distance greater than 1.85 mm, so that the brake track 210 can move axially within the center range CR. For example, the center range CR can be 4.85 mm. The allowable axial movement of the brake track 210 is the center range CR minus the thickness T1 of the brake track 210. Therefore, in this example, the brake track 210 can move a total distance of 3 mm (or ±1.5 mm from the center position). As another example, assume that the brake track 210 has a thickness T1 of 2 mm. In such an example, the center range CR may be 6 mm, which allows the brake track 210 to move 4 mm (or ±2 mm from the center position). In some examples, such as Fig. 7AAs shown, the center range CR is the same as the thickness T2 of the bracket 208. In other words, the first side 220 and the second side 222 of the bracket 208 can define the limits or boundaries of the allowed movement. This allows a maximum range of movement without extending beyond the bracket 208. However, in other examples, the center range CR can be greater or less than the thickness T2 of the bracket 208. For example, the thickness T2 of the bracket 208 can be 6 mm, while the center range CR is 5.8 mm (0.1 mm sinking from each side of the bracket 208).

[0127] In this example, the brake rotor 200 does not include any stops that limit the axial movement of the brake track 210 relative to the bracket 208. Therefore, the brake track 210 can move away from the bracket 208 in the axial direction. However, when installed on a bicycle with a brake caliper, the brake pads of the brake caliper can limit the axial movement of the brake track 210 and therefore define the center range CR. For example, when the brake pads are in their open position, the brake pads prevent the brake track 210 from moving too far in either axial direction. Examples of this are discussed below.

[0128] Figure 8 An example brake rotor 200 is shown for use with an example brake caliper 800. The brake caliper 800 is mounted on a bicycle frame 802. For example, the caliper 800 may correspond to Figure 1 The front brake caliper 144 or the rear brake caliper 152 on the bicycle 100 of the embodiment of the present invention. The brake track 210 extends into the brake caliper 800.

[0129] Fig. 9 800, showing the brake rotor 200 within the caliper 800. The caliper 800 has a body 900 (e.g., a housing) and a first brake pad 902 and a second brake pad 904 that are movable relative to the body 900. The first brake pad 902 and the second brake pad 904 are disposed on opposite sides of the brake track 210. Fig. 9 2, the brake pads 902, 904 are in their fully open or retracted positions. When the brake caliper 800 is activated (e.g., via hydraulic and / or mechanical actuation), the brake pads 902, 904 move toward each other and engage opposite sides of the brake track 210, thereby clamping the brake rotor 200 between the brake pads 902, 904. The frictional engagement between the brake pads 902, 904 and the sides of the brake track 210 slows the rotation of the brake track 210, and therefore slows the rotation of the associated wheel. When the braking force is released, the brake pads 902, 904 retract or move outward from the brake track 210 to their fully open positions.

[0130] like Fig. 9As shown, when the brake pads 902, 904 are fully retracted, the first brake pad 902 is spaced apart from the brake track 210 by a first gap 906, and the second brake pad 904 is spaced apart from the brake track 210 by a second gap 908. Generally, it is desirable to center the brake track 210 between the brake pads 902, 904 so that when braking is applied, the brake pads 902, 904 contact the sides of the brake track 210 at the same time and apply substantially the same force. However, over time, the brake pads 902, 904 and / or the sides of the brake track 210 may wear at different rates. Therefore, the size of the gaps 906, 908 may change over time. For known brake rotors, this results in uneven braking forces because one of the brake pads 902, 904 engages the brake track before the other brake pad 902, 904. As disclosed herein, the brake track 210 of the example brake rotor 200 is axially movable on the bracket 208. Therefore, if the brake rotor 200 is not centered between the brake pads 902, 904, when the brakes are applied, one of the brake pads 902, 904 will axially move (e.g., push) the brake track 210 to a position where the brake pads 902, 904 apply substantially the same force, i.e., a center position between the brake pads 902, 904. Specifically, if there is an unbalanced force on the brake track 210 from the brake pads 902, 904, the net force overcomes the friction force (between the brake track 210 and the bracket 208) and causes the brake track 210 to slide relative to the bracket 208 to a position where the applied forces are substantially balanced on opposite sides of the brake track 210. In this manner, the brake rotor 200 self-centers between the brake pads 902, 904, which allows for substantially balanced braking forces on opposite sides of the brake track 210 and ensures that the brake track 210 is spaced apart from the brake pads 902, 904 when the brake pads 902, 904 are retracted. Fig. 92, 904). When the brake track 210 is adjusted to the new center position via the static friction between the brake track 210 and the bracket 208, the brake track 210 is maintained in the new center position via the static friction between the brake track 210 and the bracket 208. Therefore, the brake track 210 is centered between the brake pads 902, 904 for the next braking operation. This ensures that an appropriate gap is formed between the brake track 210 and the brake pads 902, 904 to avoid unnecessary braking contact. This adjustment can occur each time the brake pads 902, 904 have an unbalanced force or contact on the brake track 210. In a brake caliper with opposing slave pistons, the brake pads 902, 904 are retracted away from the brake track 210 by approximately equal distances. In a brake caliper with a single-sided slave piston, the brake pads 902, 904 are retracted away from the brake track 210 by unequal distances. Regardless of whether the brake rotor 200 is used with a brake caliper with opposing or single-sided slave pistons, the brake track 210 maintains its new position between the brake pads 902, 904. Thus, the example brake rotor 200 reduces or eliminates the need to constantly adjust the position of the brake rotor 200 over time as required by known brake rotors.

[0131] This self-centering effect is also helpful when initially installing the brake rotor 200 and brake caliper 800 on the bicycle. Specifically, with known brake rotors, aligning the brake track between the brake pads 902, 904 is often a laborious process. Typically, people use shims to fine-tune the exact position of the brake rotor. On the other hand, the example brake rotor 200 can be installed without shims (or with minimal shims) because the brake track 210 is self-centered once the brakes are applied. This greatly reduces the labor costs and time associated with the assembly and maintenance of the bicycle.

[0132] In this example, the center range CR is defined by the distance between the first brake pad 902 and the second brake pad 904 in their fully open positions. As described above, in some examples, the center range CR can correspond to the thickness T2 of the bracket 208. In other examples, the center range CR can be greater than or less than the thickness T2 of the bracket 208. In some examples, as the brake pads 902, 904 and / or the brake track 210 wear over time, the center range CR increases and / or changes position (e.g., shifts slightly inboard or outboard).

[0133] Although the example brake rotor 200 does not have any stops, in other examples, one or more stops can be coupled to or formed on the brake rotor 200 to define the center range CR. For example, a lip can be formed on the end 228 of one or more arms 226. Example stops are disclosed in more detail herein.

[0134] Fig. 10A and Fig. 10B Another example brake rotor 1000 constructed in accordance with the teachings of the present disclosure is shown. The example brake rotor 1000 may be Figure 1 The bicycle 100 may be implemented, for example, as a front brake rotor 142 and / or a rear brake rotor 150 . Fig. 10A is a perspective view of a first side 1002 of a brake rotor 1000, and Fig. 10B 1 is a perspective view of a second side 1004 of the brake rotor 1000 opposite the first side 1002. The brake rotor 1000 has a central axis 1006 that forms a rotational axis about which the brake rotor 1000 rotates. Figure 2A and Figure 2B The brake rotor 200 of the embodiment of the present invention is substantially the same as that of the brake rotor 200 of the embodiment of the present invention. Specifically, the brake rotor 1000 includes a bracket 1008, a brake track 1010 disposed radially outside the bracket 1008, a first side 1012 and a second side 1014 of the brake track 1010 (which form a braking surface), a central opening 1016 in the bracket 1008 for receiving the hub, a plurality of fastener openings 1018, a first side 1020 and a second side 1022 of the bracket 1008, a plurality of openings 1024 in the brake track 1010, a set of arms 1026 having ends 1028, and an inner peripheral edge 1030 on the brake track 1010 forming a notch 1032. The brake track 1010 can slide in the axial direction on the ends 1028 of the arms 1026 in the same manner as the brake rotor 200 described above, but is constrained in the radial and circumferential directions. To avoid redundancy, a complete description of the bracket 1008 and the brake track 1010 is not provided. Rather, it should be appreciated that any of the example structural and / or functional aspects disclosed above in connection with brake rotor 200 are equally applicable to brake rotor 1000 .

[0135] In this example, the brake rotor 1000 includes a stop to limit the axial movement of the brake track 1010 relative to the bracket 1008, thereby defining a center range CR. Fig. 10A and Fig. 10B As shown, the brake rotor 1000 includes a set of pins 1034 (in Fig. 10A and Fig. 10B 1026). In this example, the brake rotor 1000 includes the same number of pins 1034 as the arms 1026, and each pin 1034 is associated with one of the arms 1026. In other examples, the brake rotor 1000 may include more or fewer pins (e.g., one, two, three, etc.). Each pin 1034 extends through an opening formed in the brake rotor 1000. The pins 1034 limit the axial movement of the brake track 1010 relative to the bracket 1008 and prevent the brake track 1010 from moving too far in one axial direction or the other.

[0136] Fig.11 is a side view illustrating a first side 1002 of the brake rotor 1000 . Fig.12 is an exploded view of the brake rotor 1000. Fig.12 As shown, the brake rotor 1000 includes a bracket 1008, a brake track 1010 and a pin 1034 (in Fig.12 In order to hold the pins 1034 in place, the brake rotor 1000 includes a set of clips 1200 for the corresponding pins 1034 (in Fig.12 A clip is marked in the figure).

[0137] Fig.13 1 is a perspective view of one of the pins 1034 and one of the clips 1200. The pin 1034 has a head 1300 and a shaft 1302. In some examples, the head 1300 and the shaft 1302 are integrally formed. The shaft 1302 has a groove near the distal end of the shaft 1302 to receive the clip 1200. The clip 1200 can be pushed into the groove 1304, which couples the clip 1200 to the pin 1034.

[0138] Fig.14A yes Fig. 10A an enlarged view of the lead-in mark 1036 in FIG. 1 , and Fig. 14B yes Fig. 10B An enlarged view of the lead-in mark 1038 in FIG. Fig.14A As shown, the head 1300 of the pin 1034 is disposed on the first side 1020 of the bracket 1008. The shaft 1302 ( Fig.13 ) extends through an opening in the brake rotor 1000. Fig. 14B As shown, the clip 1200 is coupled to the shaft 1302 and disposed on the second side 1022 of the bracket 1008. The size of the pin 1034 is designed so that when the pin 1034 and the clip 1200 are installed, as shown in FIG. Fig.14A and Fig. 14BAs shown, the head 1300 engages the first side 1020 of the arm 1026, and the clip 1200 engages the second side 1022 of the arm 1026. The head 1300 and the clip 1200 extend radially outward and overlap a portion of the brake track 1010 in the axial direction. Therefore, the head 1300 and the clip 1200 are the first stopper and the second stopper that define the outer boundary of the axial movement of the brake track 1010. The head 1300 (first stopper) is located on the first side 1002 of the brake rotor 1000, and the clip 1200 (second stopper) is located on the second side 1004 of the brake rotor 1000. The head 1300 (first stopper) limits the axial movement of the brake track 1010 in the first axial direction, and the clip 1200 (second stopper) limits the axial movement of the brake track 1010 in the second axial direction.

[0139] Fig.15 yes Fig.11 FIG. 1 is an enlarged view of the lead-out callout 1100 in FIG. 1 with the pin 1034 removed. The outline of the head 1300 of the pin 1034 is shown in dashed lines. Fig.15 As shown, the brake rotor 1000 includes an opening 1500 for the pin 1034. The opening 1500 is partially (e.g., half) formed in the brake track 1010 and partially (e.g., half) formed in the bracket 1008 (and specifically, formed in the end 1028 of the arm 1026 of the bracket 1008). In this example, the end 1028 of the arm 1026 has a first semicircular groove 1502, and the brake track 1010 has a second semicircular groove 1504. The grooves 1502, 1504 can be machined (e.g., drilled) in the arm 1026 and the brake track 1010, respectively. The head 1300 and the clip 1200 have a larger diameter than the opening 1500. Therefore, when the pin 1034 and the clip 1200 are installed, the head 1300 and the clip 1200 overlap at least a portion of the brake track 1010 in the axial direction. This prevents the brake track from moving axially beyond the head 1300 or the clip 1200 .

[0140] In some examples, it may be advantageous to position the pin 1034 between the surface of the arm 1026 and the surface of the brake track 1010 because the pin 1034 acts as a load transfer mechanism. Fig.15 As shown, the pin 1034 is disposed on the load side of the arm 1026 (e.g., at Fig.1510). Thus, during braking, the braking load is transferred from the brake track 1010 to the arm 1026 of the bracket 1008 through the pin 1034. The pin 1034 has a larger surface / contact area on the bracket 1008 than having a flat interface (interface) directly between the brake track 1010 and the arm 1026. This increased surface area helps to distribute the braking load more evenly, thereby reducing the load PSI to the bracket 1008. The pin 1034 also helps to dissipate heat across the entire width of the pin 1034. As a result, less heat is transferred to the bracket 1008. Therefore, the transfer of force and heat per interface surface area is reduced on the bracket 208 so as not to subject the bracket 298 to excessive stress and permanently deform the bracket 208.

[0141] In some examples, the brake track 1010 is constructed of stainless steel, the bracket 1008 is constructed of aluminum, and the pin 1034 is constructed of a non-aluminum material that has a higher melting point than aluminum and can withstand higher surface stresses at higher temperatures. In this way, the pin 1034 is constructed of a different material than the bracket 1008. This helps reduce heat transfer to the bracket 1008. In some examples, the pin 1034 is constructed of stainless steel (such as series 300 or series 400 stainless steel). In other examples, the pin 1034 can be constructed of other types of materials (such as titanium).

[0142] Although in the example shown, the opening 1500 for the pin 1034 is formed halfway in each of the arm 1026 and the brake track 1010, in other examples, the opening 1500 may be formed more in one of the structures than the other (e.g., 75% in the arm 1026 and 25% in the brake track 1010). In some examples, the opening 1500 is formed completely through the arm 1026 (e.g., through the center of the arm 1026). Although the combination Figures 13 to 15 Only one of the pins 1034 is described, but it should be understood that each of the other pins 1034 is associated with Figures 13 to 15 The disclosed pin 1034 is the same.

[0143] Fig.16 It is along Fig.11 1 is a cross-sectional view of an example brake rotor 1000 taken along line BB. Fig.17A , Fig. 17B and Fig. 17C yes Fig.16 The enlarged view of the lead-out label 1600 in FIG. 1 shows the brake track 1010 in three different axial positions. Fig.17A As shown, the brake track 1010 has a thickness T1 and the bracket 1008 (eg, the end 1028 of the arm 1026 ) has a thickness T2 that is greater than the thickness T1 of the brake track 1010 . Fig.17AThe brake track 1010 is shown in a central position. The brake track 1010 is movable (e.g., slidable) in an axial direction relative to the bracket 1008. If the brake track 1010 is moved in one axial direction (e.g., inboard) Fig. 17B 1200. This prevents the brake track 1010 from moving further in the same axial direction. Similarly, if the brake track 1010 is moved in the opposite axial direction (e.g., outboard), Fig. 17C 1034, which prevents the brake track 1010 from moving further in the same axial direction. In this way, the head 1300 and the inner surface of the clip 1200 form or define a center range CR. In this example, because the head 1300 and the clip 1200 are engaged with the first side 1020 and the second side 1022 of the bracket 1008, respectively, the center range CR is the same as the thickness T2 of the bracket 208. In some examples, this allows a maximum range of movement without allowing the brake track 1010 to move beyond the first side 1020, the second side 1022 of the bracket 208. However, in other examples, the center range CR can be greater or less than the thickness T2 of the bracket 1008.

[0144] In some examples, the brake rotor 1000 includes a pin for each interface of the arm 1026 and the notch 1032, such as Fig. 10A , Fig. 10B , Fig.11 and Fig.12 . However, in other examples, the brake rotor 1000 may include pins for only some interfaces rather than all interfaces. For example, the brake rotor 1000 may include only one pin and clip for one of the arms 1026 and its corresponding recess 1032. The other arms 1026 and recesses 1032 may not have any pins. In such an example, a single pin and clip may still prevent the entire brake track 1010 from axially moving beyond the limits of the center range CR. Similar to the brake rotor 200 disclosed above, the brake track 1010 is constrained in radial and circumferential directions. Even if the pin is removed, the brake track 1010 is still constrained in radial and circumferential directions.

[0145] Although in this example, the clip 1200 is used to retain the pin 1034 and forms part of the axial restraint, in other examples, other structures may be used to retain the pin, such as a cotter pin. In some examples, the pin 1034 may alternatively be implemented as a rivet. In such an example, the end of the rivet may be flared outward to form a second head on the opposite side of the brake rotor 1000. In other examples, threaded fasteners, such as nuts and bolts, may be used in a similar manner.

[0146] In some examples, one or more intermediate structures may be provided between the bracket 1008 and the brake track 1010. Such structures may be used to help account for dimensional tolerances and thermal growth due to increased brake temperatures that would otherwise create more than acceptable clearance between the brake track 1010 and the bracket 1008. When the brakes are not applied, these clearances may cause the brake track 1010 to move freely or rattle on the bracket 1008 due to vehicle rolling surface vibrations. For example, Fig.18A and Fig.18B 1002 and 1004, respectively, are perspective views of a first side 1002 and a second side 1004 of a brake rotor 1000. In this example, the brake rotor 1000 includes an arm 1026 (in Fig.18A and Fig.18B A corresponding notch 1032 (in the brake track 1010) is provided between the brake track 1010 and an arm is marked in FIG. Fig.18A and Fig.18B A set of springs 1800 (in Fig.18A and Fig.18B 1008). Spring 1800 circumferentially biases brake track 1010 relative to bracket 1008. Specifically, spring 1800 abuts against pin 1034 (at Fig.18A and Fig.18B 1000 and the bracket 1008 bias the brake track 1010 to reduce or eliminate the potential free movement and rattle mentioned above. In this example, the brake rotor 1000 includes the same number of springs 1800 as the arms 1026 and the notches 1032. In other examples, the brake rotor 1000 can include more or fewer springs (e.g., one, two, three, etc.).

[0147] Fig.19A Is from Fig.18A an enlarged view of the lead-in label 1802, and Fig.19B Is from Fig.19B An enlarged view of the lead-in label 1804. Fig.19A and Fig.19B One of the arms 1026 and the corresponding spring 1800 is shown on the opposite side. Fig.19A and Fig.19B As shown, the spring 1800 is disposed in the recess 1032 between the outer peripheral edge 1900 of the end 1028 of the arm 1026 and the inner peripheral edge 1030 of the brake track 1010 . Fig. 20 1 is an isolated perspective view of spring 1800. In some examples, spring 1800 is a sheet of metal, such as a stainless steel sheet of metal. Spring 1800 is installed in an elastically deformed state. Fig.19A and Fig.19B, the spring 1800 fills any excess space between the outer peripheral edge 1900 of the arm 1026 and the inner peripheral edge 1030 of the brake track 1010 in the recess 1032. The spring 1800 also biases the brake track 1010 against the pin 1034 and the bracket 1008 in the circumferential direction of the braking load. This ensures that there is no gap or slop between the brake track 1010 and the bracket 1008, so that when the brake is applied, the braking load on the brake track 1010 is directly transferred to the bracket 1008. In addition, the spring 1800 acts as a heat shield to help reduce the heat transferred to the bracket 1008. In some examples, it is desirable to reduce the heat to the bracket 1008 because the bracket 1008 may be prone to deformation at higher temperatures. Although in this example, the spring 1800 is formed of a flat metal strip, in other examples, the spring 1800 can be formed in other geometric shapes and / or implemented as other types of springs, such as a coil spring or a hollow split pin. Additionally or alternatively, the spring 1800 may be formed as part of the brake track 1010 , the bracket 1008 , and / or the pin 1034 . Fig.18A and Fig.18B The other springs 1800 shown in the Fig.19A , Fig.19B and Fig. 20 The disclosed spring 1800 is identical. Fig.19A , Fig.19B and Fig. 20 Any aspects of the spring 1800 disclosed in the drawings are equally applicable to the other springs 1800 .

[0148] In this example, the thickness of the spring 1800 is approximately the same as the thickness of the bracket 1008. The spring 1800 can be axially constrained by the head 1300 of the pin 1034 and the clip 1200. In this example, the brake track 1010 slides axially on the outer surface 1902 of the spring 1800. The friction between the inner peripheral edge 1030 of the brake track 1010 and the outer surface 1902 of the spring 1800 can be combined with Figure 2A and Figure 2B The friction force disclosed in the embodiment of the present invention is the same as that disclosed in the bracket 208 and the brake track 210 of the brake rotor 200. Specifically, the friction force between the brake track 210 and the spring 1800 is an amount that enables the brake track 210 to slide axially on the spring 1800 when engaged by the brake pad with sufficient force (e.g., 1 Newton), but when the brake pad is released, the friction force maintains the brake track 210 in a substantially same axial position relative to the bracket 208.

[0149] Fig.21 is shown with a spring 1800 (in Fig.21 1002 of a brake rotor 1000 having a spring labeled therein. Fig. 22 It is along Fig.21 1 is a cross-sectional view of an example brake rotor 1000 taken along line CC. Fig.23 Is from Fig. 22 An enlarged view of the lead-in mark 2200. Fig.24 Is from Fig. 22 An enlarged view of the lead-in mark 2202. Fig.23 and Fig.24 As shown, spring 1800 is disposed between bracket 1008 and brake track 1010. The thickness and center range CR may be combined with FIG. 17A to FIG. 17C The disclosed ones are the same, and their descriptions are not repeated herein.

[0150] Fig.25A and Fig.25B Another example brake rotor 2500 constructed in accordance with the teachings of the present disclosure is shown. The example brake rotor 2500 may be Figure 1 The bicycle 100 may be implemented, for example, as a front brake rotor 142 and / or a rear brake rotor 150 . Fig.25A is a perspective view of a first side 2502 of a brake rotor 2500, and Fig.25B 25 is a perspective view of a second side 2504 of the brake rotor 2500 opposite the first side 2502. The brake rotor 2500 has a central axis 2506 that forms a rotational axis about which the brake rotor 2500 rotates. The brake rotor 2500 is similar to Figure 2A and Figure 2B The brake rotor 2500 of the present invention is a brake rotor 200. Specifically, the brake rotor 2500 includes a bracket 2508, a brake track 2510 disposed radially outside the bracket, a first side 2512 and a second side 2514 of the brake track 2510 (which form a braking surface), a central opening 2516 in the bracket 2508 for receiving a hub, a plurality of fastener openings 2518, a first side 2520 and a second side 2522 of the bracket 2508, a plurality of openings 2524 in the brake track 2510, a set of arms 2526 having ends 2528, and an inner peripheral edge 2530 of the brake track 2510. The ends 2528 of the arms 2526 have the same shape as the ends 228 of the arms 226 disclosed above. The bracket 2508 and the brake track 2510 can be constructed of any of the materials disclosed above in conjunction with the brake rotor 200. As further disclosed in detail, the brake track 2510 can move axially relative to the bracket 2508, but is constrained in radial and circumferential directions.

[0151] In the illustrated example, the brake rotor 2500 includes a set of locating portions (referred to herein as locating portions 2532) having heat dissipating elements 2532 (in Fig.25A and Fig.25B). A locating portion 2532 can act as a stop to limit axial movement in at least one direction, and can also be configured as a convection element, as disclosed in more detail below. The locating portion 2532 can also be referred to as a stop, a cooling fin, a cooling fixture, a cooling blade, or a heat sink. In the example shown, the brake rotor 2500 includes six locating portions 2532. However, in other examples, the brake rotor 2500 can include more or fewer locating portions (e.g., one, two, three, etc.). In this example, the locating portion 2532 is coupled to the brake track 2510. Thus, the locating portion 2532 moves axially with the brake track 2510 relative to the bracket 2508. In the example shown, the locating portion 2532 extends at least partially outward from the second side 2514 of the brake track 2510, as shown in FIG. Fig.25B 25. The locating portion 2532 dissipates heat from the brake track 2510. Specifically, the locating portion 2532 absorbs heat from the brake track 2510 and dissipates the heat to the surrounding air, thereby helping to cool the brake rotor 2500 more quickly. The locating portion 2532 may also affect the airflow around the brake rotor 2500 to improve cooling. In some examples, the locating portion 2532 is composed of aluminum, which has a relatively high thermal conductivity. In other examples, the locating portion 2532 may be composed of other materials (e.g., stainless steel). The locating portion 2532 also distributes the braking load from the brake track 2510 to the bracket 2505 over a larger surface area so as not to permanently deform the load transfer surface.

[0152] Fig.26 25 is an exploded view of the brake rotor 2500. The brake rotor 2500 includes a bracket 2508, a brake track 2510, and a positioning portion 2532 (in Fig.26 A positioning part is marked in the figure). Fig.26 As shown, the inner peripheral edge 2530 of the brake track 2510 has a set of protruding tongues 2600 extending radially inward (at Fig.26 Each of the positioning portions 2532 has a recess 2602 to receive one of the tongues 2600. The inner peripheral edge 2530 of the brake track 2510 also has a set of hooks 2604 (at Fig.26 A hook is marked in the figure) to help fix each of the corresponding positioning parts 2532. The shapes of the tongue 2600 and the hook 2604 can radially constrain the positioning part 2532 relative to the braking track 2510.

[0153] In the example shown, the brake rotor 2500 includes a set of threaded fasteners 2606 (e.g., screws, bolts, etc.) ( Fig.26A threaded fastener is marked in the figure) to connect the corresponding positioning portion in the positioning portion 2532 to the brake track 2510. The brake track 2510 has a fastener opening 2608 (in Fig.26 A fastener opening is marked in the figure), and the threaded fastener 2606 extends through the fastener opening 2608. Each positioning portion 2532 also has a corresponding fastener opening 2610 (in Fig.26 2608 are marked in the figure). When the brake rotor 2500 is assembled, each threaded fastener 2606 extends through one of the fastener openings 2608 in the brake track 2510 and into one of the fastener openings 2610 in the locating portion 2532. In this example, the fastener opening 2608 is formed through the tongue 2600. However, in other examples, the fastener opening 2608 can be formed in other locations on the brake track 2510. In other examples, the locating portion 2532 can be coupled to the brake track 2510 using other mechanical and / or chemical fastening techniques (e.g., rivets, adhesives, etc.). In other examples, the locating portion 2532 can be formed integrally with the brake track 2510.

[0154] Fig. 27 Is from Fig.26 An enlarged view of lead-in label 2612 shows an end 2528 of one of the arms 2526. Fig.25A and Fig.25B The end 2528 of the other arm 2526 of the brake rotor 2500 is connected to Fig. 27 The end 2528 shown in FIG. 2 is the same. Therefore, the combination Fig. 27 Any aspects disclosed for the end 2528 shown in FIG. 2 are also applicable to the other end 2528. The shape and combination of the end 2528 Figure 2A and Figure 2B The end 228 of the disclosed brake rotor 200 is substantially the same. The end 2528 has a protrusion 2700 that constrains the brake track 2510 in the radial direction. Fig. 27 As shown, the end 2528 of the arm 2526 has a tongue 2702 extending outwardly from a peripheral edge 2704 of the end 2528. The tongue 2702 is an extension of the second side 2522 of the arm 2526. The tongue 2702 forms a first stop that limits axial movement of the brake track 2510 in one axial direction.

[0155] Fig.28 Is from Fig.26 An enlarged view of lead-in label 2614 of , showing one of the locating portions 2532 . Fig.25A and Fig.25B The other positioning portion 2532 of the brake rotor 2500 is Fig.28The positioning portion 2532 shown in FIG. Fig.28 Any of the aspects disclosed for the locating portion 2532 shown in FIG. 2 is also applicable to the other locating portions 2532. In this example, the locating portion 2532 has a first notch 2800 for receiving one end 2528 of one of the arms 2526 and a second notch 2802 for receiving the other end 2528 of the other of the arms 2526. In other examples, the locating portion 2532 may have only one notch for one end 2528, or more than two notches for more than two ends 2528. The notches 2800, 2802 have a shape or profile that matches the shape of the end 2528. The locating portion 2532 forms a second stopper that limits axial movement of the brake track 2510 in one axial direction.

[0156] FIG. 29A to FIG. 29C Is from Fig.25B 2534, showing an example sequence of axially moving brake track 2510. End 2528 of arm 2526 is disposed in first recess 2800 of positioning portion 2532. The interface between end 2528 and positioning portion 2532 constrains brake track 2510 in radial and circumferential directions. Braking loads are transmitted to bracket 2508 through positioning portion 2532. Positioning portion 2532 is slidable in an axial direction on end 2528, which enables positioning portion 2532 to move axially relative to bracket 2508, and thus enables brake track 2510 to move axially relative to bracket 2508. Therefore, when brake track 2510 moves axially relative to bracket 2508, end 2528 will slide in first recess 2800. Similarly, when brake track 2510 moves axially relative to bracket 2508, second arm 2526 ( Figure 8 ) similarly slides in the second recess 2802.

[0157] exist Fig.29A In the embodiment, the tab 2702 on the end 2528 engages with the second side 2514 of the brake track 2510. This limits the brake track 2510 in one axial direction (in Fig.29A Move further to the right. FIG. 29A to FIG. 29C As shown in the sequence in , the brake track 2510 can move axially in opposite directions. Fig.29C, the end 2528 engages the positioning portion 2532, which limits further movement of the brake track 2510 in another axial direction. Therefore, the tongue 2702 is a first stop that limits axial movement of the brake track 2510 in the first axial direction, and the positioning portion 2532 is a second stop that limits axial movement of the brake track 2510 in the second axial direction. Therefore, in this example, the positioning portion 2532 acts as both a stop and a cooling mechanism to dissipate heat. In this example, the tongue 2702 and the positioning portion 2532 (i.e., the first stop and the second stop) are on the same side of the brake rotor 2500. Specifically, the tongue 2702 and the positioning portion 2532 are both on the second side 2504 ( Figure 4 ) rather than on the opposite side of the brake rotor 2500.

[0158] Fig.30 is a side view of the second side 2504 of the brake rotor 2500 . Fig.31 is along Fig.30 A cross-sectional view of the brake rotor 2500 taken along line DD in FIG. Fig.31 As can be seen, the brake track 2510 is disposed radially outwardly of the bracket 2508. Specifically, the brake track 2510 is axially positioned between the first side 2520 and the second side 2522 of the bracket 2508 (e.g., between the first side 2520 and the second side 2522 at the end 2528 of the bracket 2508).

[0159] Fig.32A , Fig.32B and Fig.32C Is from Fig.31 The enlarged view of the lead-out label 3100 shows the brake track 2510 and the positioning portion 2532 in three different axial positions. FIG. 32A to FIG. 32C The axial positions shown in also correspond to FIG. 29A to FIG. 29C The axial position shown in Fig.32A As shown, the brake track 2510 has a thickness T1, and the bracket 2508 (e.g., the end 2528 of the arm 2526) has a thickness T2 that is greater than the thickness T1 of the brake track 2510. The brake track 2510 can be axially (in FIG. 32A to FIG. 32C to move left and right). Fig.32A The brake track 2510 is shown in a first extreme position, wherein the brake track 2510 engages with the tab 2702 on the end 2528 of the arm 2526. The brake track 2510 is restrained by the tab 2702. Fig.32A Move further to the left. Fig.32B The brake track 210 is shown moved to a center position. Fig.32CThe brake track 2510 is shown moved to the second extreme position, wherein the positioning portion 2532 engages the end 2528 of the arm 2526. In this example, the center range CR is defined by the inner surface of the tongue 2702 and the first side 2520 of the bracket 2508, as shown in FIG. Fig.32A The center range CR is approximately the same as the thickness T2 of the bracket 208 (minus the thickness of the tab 2702).

[0160] Fig.33 is along Fig.30 A cross-sectional view of the brake rotor 2500 taken along line EE in FIG. Fig.34 Is from Fig.33 An enlarged view of the lead-in annotation 3300. Fig.34 A fastener 2606 is shown coupling the locating portion 2532 to the brake track 2510. In this example, the fastener opening 2610 in the locating portion 2532 is threaded, but the fastener opening 2608 in the brake track 2510 is not threaded. In other examples, the fastener opening 2608 in the brake track 2510 may also be threaded.

[0161] Fig.35A and Fig.35B Another example brake rotor 3500 constructed in accordance with the teachings of the present disclosure is shown. The example brake rotor 3500 may be Figure 1 The bicycle 100 may be implemented, for example, as a front brake rotor 142 and / or a rear brake rotor 150 . Fig.35A is a perspective view of a first side 3502 of a brake rotor 3500, and Fig.35B 35 is a perspective view of a second side 3504 of the brake rotor 3500 opposite the first side 3502. The brake rotor 3500 has a central axis 3506 that forms a rotational axis about which the brake rotor 3500 rotates. The brake rotor 3500 is substantially similar to Figure 2A and Figure 2BThe brake rotor 3500 is the same as the brake rotor 200 of the embodiment of the present invention. Specifically, the brake rotor 3500 includes a bracket 3508, a brake track 3510 disposed radially outside the bracket 3508, a first side 3512 and a second side 3514 of the brake track 3510 (which form a braking surface), a central opening 3516 in the bracket 3508 for receiving the hub, a plurality of fastener openings 3518, a first side 3520 and a second side 3522 of the bracket 3508, a plurality of openings 3524 in the brake track 3510, a set of arms 3526 having ends 3528, and an inner peripheral edge 3530 on the brake track 3510 forming a notch 3532. The brake track 3510 can slide in the axial direction on the ends 3528 of the arms 3526 in the same manner as the brake rotor 200 described above, but is constrained in the radial and circumferential directions. To avoid redundancy, a complete description of the bracket 3508 and the brake track 3510 is not provided. Rather, it should be appreciated that any example structural and / or functional aspects disclosed above in connection with brake rotor 200 are equally applicable to brake rotor 3500 .

[0162] In this example, the brake rotor 3500 includes a stop to limit axial movement of the brake track 3510 relative to the bracket 3508, thereby defining a center range CR. Fig.35A and Fig.35B As shown, the brake rotor 3500 includes a set of stoppers 3534 (in Fig.35A and Fig.35B 35). The stop 3534 limits axial movement of the brake track 3510 in one axial direction. In this example, the brake rotor 3500 includes six stops 3534. The stop 3534 is associated with every other arm 3526. However, in other examples, the brake rotor 3500 may include more or fewer stops. In this example, the stop 3534 is coupled to the brake track 3510. In this way, the stop 3534 moves with the brake track 3510 relative to the bracket 3508. The stop 3534 extends outward from the second side 3514 of the brake track 3510, as shown in FIG. Fig.35B shown.

[0163] Fig.36 is an exploded view of the brake rotor 3500. Fig.36 As shown, the brake rotor 3500 includes a bracket 3508, a brake track 3510 and a stopper 3534 (in Fig.36 In the example shown, the brake rotor 3500 includes a set of threaded fasteners 3600 (e.g., screws, bolts, etc.) (in Fig.36A threaded fastener is marked in the figure) to connect a corresponding stopper in the stopper 3534 to the brake track 3510. The brake track 3510 has a fastener opening 3602 (in Fig.36 3602, the threaded fastener 3600 extends through the fastener opening 3602. Each stop 3534 also has a corresponding fastener opening 3604 (in Fig.36 When the brake rotor 3500 is assembled, each threaded fastener 3600 extends through one of the fastener openings 3602 in the brake track 3510 and into one of the fastener openings 3604 in one of the stops 3534. In other examples, the stops 3534 can be coupled to the brake track 3510 using other mechanical and / or chemical fastening techniques.

[0164] Fig.37 Is from Fig.36 An enlarged view of lead-in label 3606 shows one of the ends 3528 of one of the arms 3626. Fig.35A and Fig.35B The end 3528 of the other arm 3526 of the brake rotor 3500 is connected to Fig.37 The end 3528 shown in FIG. 3 is the same. Therefore, the combination Fig.37 Any aspects disclosed for the end 3528 shown in FIG. 3528 are also applicable to the other end 3528. Fig. 27 The end 2528 of the arm 2526 shown in FIG. 35 is identical. The end 3528 has a tongue 3700 that extends upwardly beyond the peripheral edge 3702 of the end 3528. The tongue 3700 forms a first stop that limits axial movement of the brake track 3510 in one axial direction.

[0165] Fig.38 Is from Fig.36 An enlarged view of lead-in label 3608 of , showing one of the stops 3534 . Fig.35A and Fig.35B The other stopper 3534 of the brake rotor 3500 is connected to Fig.38 The stopper 3534 shown in FIG. Fig.38 Any aspects disclosed for the stopper 3534 shown in FIG. 3534 are also applicable to other stoppers 3534. The stopper 3534 has a first side 3800, a second side 3802 opposite the first side 3800, and a peripheral edge 3804 between the first side 3800 and the second side 3802. Fig.38As shown, the stopper 3534 has a protrusion 3806 formed on the second side 3802 that extends upwardly beyond the peripheral edge 3804. The protrusion 3806 forms a second stopper that limits axial movement of the brake track 2510 in one axial direction.

[0166] FIG. 39A to FIG. 39C Is from Fig.35B 3536, showing an example sequence of axially moving brake track 3510. End 3528 of arm 3526 is disposed in recess 3532 in brake track 3510. Brake track 3510 can slide axially on end 3528 of arm 3526. Stop 3534 is coupled to brake track 3510 adjacent arm 3526. Fig.39A In the embodiment, the tongue 3700 on the end 3528 engages with the second side 3514 of the brake track 3510. This limits the brake track 3510 in one axial direction (in Fig.39A Move further to the right. FIG. 39A to FIG. 39C As shown in the sequence in , the brake track 3510 can move axially in opposite directions. Fig.39C , the end 3528 engages the protrusion 3806 on the stop 3534. The protrusion 3806 on the stop 3534 overlaps with the arm 3526 in the axial direction. The protrusion 3806 limits the brake track 3510 from further moving in another axial direction. Therefore, the tongue 3700 is a first stop that limits axial movement in a first axial direction, and the stop 3534 is a second stop that limits axial movement in a second axial direction. In this example, the tongue 3700 and the protrusion 3806 (i.e., the first stop and the second stop) are both on the same side of the brake rotor 3500. Specifically, the tongue 3700 and the protrusion 3806 are on the second side 3504 of the brake rotor 3500. In some examples, when the brake track 3510 moves axially, the arm 3526 engages the outer peripheral edge 3804 ( Fig.38) engages and slides on the peripheral edge. In other examples, the stop 3534 is spaced apart from the arm 3526 so that the arm 3526 does not slide on the stop 3534. In some examples, instead of using the stop 3534 to provide a limit in one axial direction, a second tab can be formed on the opposite side of the arm 3526. For example, similar to the tab 3700, the second tab can extend beyond the peripheral edge 3702 on the first side 3520 of the end 3528 opposite the tab 3700. In such an example, the brake track 3510 can move axially between the tab 3700 (the first stop) and the second tab (the second stop). In some examples, the second stop can be formed after the brake track 3510 is on the bracket 3508 (e.g., by deforming the arm 3526), ​​thereby capturing the brake track 3510 between the tabs.

[0167] Fig.40 is a side view of the second side 3504 of the brake rotor 3500 . Fig.41 is along Fig.40 A cross-sectional view of the brake rotor 3500 taken along line FF in FIG. Fig.42A , Fig.42B and Fig.42C Is from Fig.41 4100, showing the brake track 3510 and the stop 3534 in three different axial positions. FIG. 42A to FIG. 42C The axial positions shown in also correspond to FIG. 39A to FIG. 39C The axial position shown in Fig.42A As shown, the brake track 2510 has a thickness T1, and the bracket 3508 (e.g., the end 3538 of the arm 3526) has a thickness T2 that is greater than the thickness T1 of the brake track 3510. The brake track 210 can be axially (in FIG. 42A to FIG. 42C to move left and right). Fig.42A The brake track 3510 is shown in a first extreme position, wherein the brake track 3510 engages with the tab 3700 on the end 3528 of the arm 3526. The brake track 3510 is restrained by the tab 3700. Fig.42A Move further to the left. Fig.42B The brake track 3510 is shown in a central position. Fig.42C The brake track 3510 is shown moved to the second extreme position, wherein the protrusion 3806 on the stop 3534 engages the end 3528 of the arm 3526. In this example, the center range CR is defined by the inner surface of the tongue 3700 and the first side 3520 of the bracket 3508, as shown in FIG. Fig.42A The center range CR is approximately the same as the thickness T2 of the bracket 3508 (minus the thickness of the tongue 3700).

[0168] Fig.43 is along Fig.40 0045] A cross-sectional view of the brake rotor 3500 taken along line GG in FIG. Fig.44 Is from Fig.43 An enlarged view of the lead-in mark 4300. Fig.44 A fastener 3600 is shown coupling the stop 3534 to the brake track 3510. In this example, the fastener opening 3604 in the stop 3534 is threaded, but the fastener opening 3602 in the brake track 3510 is not threaded. In other examples, the fastener opening 3602 in the brake track 3510 may also be threaded.

[0169] Although the example brake rotors 200, 1000, 2500, and 3500 disclosed above include a six bolt mounting system for mounting to a hub, any of the example brake rotors disclosed herein may alternatively include a center lock type mounting bracket for mounting to a hub. For example, Fig.45 4500 is a perspective view of an example brake rotor 4500. The brake rotor 4500 includes a Figure 2A and Figure 2B The disclosed brake rotor 200 has a substantially identical bracket 4502 and brake track 4504. However, in this example, the bracket 4502 has a central opening 4506 defined by a spline interface 4508. The spline interface 4508 can engage (e.g., mesh) with a corresponding spline interface on the hub, and may or may not include a locking ring. In other examples, any of the example brake rotors disclosed herein can be coupled to the hub in other ways.

[0170] In the example rotors 200, 1000, 2500, 3500, and 4500 disclosed above, a movable (e.g., slidable) interface that allows axial movement is between the brake rotor and the bracket, and radially outside the hub attachment section of the bracket. The interface has a relatively large diameter. In particular, the sliding interface is formed between the outer diameter of the bracket and the inner diameter of the brake track. In other examples, the sliding interface can have a smaller diameter. For example, the brake rotor can be configured so that the movable (e.g., slidable) interface is located at the hub attachment section of the bracket.

[0171] Fig.46 is a perspective view of an example hub assembly 4600 constructed in accordance with the teachings of the present disclosure and including an example hub 4602 and an example brake rotor 4604. The brake rotor 4604 is disposed on the hub 4602. The hub 4602 and the brake rotor 4604 rotate about a central axis 4606. Thus, the central axis 4606 is the same as the axis of rotation that defines the coordinate reference for the axial, radial, and circumferential directions referenced herein. Fig.474604 on a hub 4602. Hub 4602 may be a bicycle such as Figure 1 The rear hub or front hub of the wheel on the bicycle 100). Fig.46 As shown, the hub 4602 has a first spoke attachment flange 4607a and a second spoke attachment flange 4607b. A wheel having the example hub assembly 4600 can have spokes that can be attached to the first spoke attachment flange 4607a and the second spoke attachment flange 4607b.

[0172] like Fig.46 and Fig.47 As shown, the brake rotor 4604 includes a bracket 4608 and a brake track 4610 coupled to the bracket 4608. The brake track 4610 has a braking surface to be engaged by the brake pad. In this example, the brake track 4610 is fixedly coupled to the bracket 4608. Therefore, the brake track 4610 is axially, radially, and circumferentially constrained relative to the bracket 4608. In the example shown, the brake track 4610 and the bracket 4608 are connected via a set of fasteners 4612 (e.g., rivets, screws, etc.) (in Fig.46 and Fig.47 However, in other examples, brake track 4610 and bracket 4608 can be connected using other fastening techniques. In some examples, fastener 4612 and / or bracket 4608 are made of aluminum alloy, steel alloy, structural polymer or other composite materials.

[0173] like Fig.46 and Fig.47 As shown, the hub 4602 has a first spline interface 4614. The bracket 4608 has a central opening 4616 defined by a second spline interface 4618. The second spline interface 4618 engages (e.g., meshes) with the first spline interface 4614 on the hub 4602. Therefore, the brake rotor 4604 and the hub 4602 are rotationally fixed together. The interface also radially and circumferentially constrains the brake rotor 4604. However, the bracket 4608 of the brake rotor 4064 is axially movable (e.g., slidable) on the hub 4602. This enables the brake rotor 4604 to move axially relative to the hub 4602 to re-center or center during braking operation. Therefore, in this example, a sliding interface that allows the brake rotor 4604 (and therefore the brake track 4610) to move axially is between the first spline interface 4614 of the hub 4602 and the second spline interface 4618 of the brake rotor 4604. In some examples, the sliding interface is less than half the diameter of brake rotor 4604. In other examples, the sliding interface can be greater or less than half the diameter of brake rotor 4604.

[0174] Fig.48 is along Fig.474602 and the brake rotor 4604. The hub 4602 has a frame attachment section 4800, which is the section where a member of the bicycle's frame is attached to the hub 4602. Fig.48 As shown, the first spline interface 4614 is between the first spoke attachment flange 4607a and the frame attachment section 4800. The bracket 4608 of the brake rotor 4604 can slide axially on the first spline interface 4614.

[0175] Fig.49A , Fig.49B and Fig.49C Is from Fig.48 An enlarged view of lead-in label 4802 of , showing three different axial positions of the brake rotor 4604 on the hub 4602. Fig.49A The brake rotor 4604 is shown in a central position. The brake rotor 4604 can be axially (in Fig.49A This allows the brake rotor 4604 to self-center when the brake pads are applied. For example, Fig.49B The brake rotor 4604 is shown moved in a first axial direction to an inboard position, and Fig.49C The brake rotor 4604 is shown moved to an outboard position in a second axial direction. The friction of the sliding interface between the brake rotor 4604 and the hub 4602 is the same as the friction disclosed in connection with other brake rotors disclosed herein. Specifically, the friction between the first spline interface 4614 of the hub 4602 and the second spline interface 4618 of the brake rotor 4604 is an amount such that the brake rotor 4604 can slide axially on the hub 4602 when the brake pad is engaged with sufficient force (e.g., 1 Newton), but when the brake pad is released, the friction maintains the brake rotor 4604 in a substantially same axial position on the hub 4602.

[0176] like Fig.49AAs shown, the second spline interface 4618 of the bracket 4608 has a thickness of T1. In this example, the second spline interface 4618 is less than the thickness of the bracket 4608 because the central opening 4616 is open outward at one end. The first spline interface 4614 of the hub 4602 has a thickness T2 that is greater than the thickness T1 of the second spline interface 4618, which allows the brake rotor 4604 to move axially on the hub 4602 without extending beyond the hub 4602. In this example, the brake rotor 4604 has a center range CR corresponding to the thickness T2 of the first spline interface 4618 of the hub 4602. However, in other examples, the center range CR can be greater than or less than the thickness T2. In some examples, the center range CR can be any amount greater than the thickness T1 of the second spline interface 4618 of the bracket 4608. In other words, the center range CR can be any factor greater than the thickness T1 of the second spline interface 4618, such as 1.1x, 1x, 1.2x, 1.3x, etc.

[0177] In the example shown, the hub assembly 4600 does not include any stops that limit axial movement to the center range CR. However, if combined with Figure 8 and Fig. 9 As disclosed in the brake rotor 200 in FIG. 4 , the brake pad can define a stop that limits axial movement and defines a center range CR. In addition or alternatively, the brake rotor 4604 can be stopped by one or more other structures adjacent to the brake rotor 4604. For example, if the brake rotor 4604 moves axially inward by a sufficient amount, the bracket 4608 engages the first spoke attachment flange 4607a. If the brake rotor 4604 moves axially outward by a sufficient amount, the bracket 4608 engages a portion of the frame of the bicycle at the frame attachment section 4800. Therefore, the brake rotor 4604 can move axially between the first spoke attachment flange 4607a and the frame attachment section 4800 on the first spline interface 4614 of the hub. Therefore, the center range CR is defined by the first spoke attachment flange 4607a and the frame attachment section 4800. In other examples, one or more stops can be formed on one or both sides to limit axial movement.

[0178] In some examples, the brake rotor may slide axially on the hub, such as Fig.46 As shown, and may include a brake track that is axially slidable on the bracket. For example, any of the example brake rotors 200, 1000, 2500, 3500, and 4500 may utilize a brake track that is axially slidable on the bracket. Fig.46 and Fig.47 This is achieved by using a splined interface as shown. This provides two levels of axial movement.

[0179] As disclosed herein, some example brake rotors have a sliding interface radially outward from the hub attachment section, while other brake rotors have a sliding interface at the hub attachment section. The dimensions of the brake rotor and / or its components can be varied as desired. In some examples, to prevent or limit brake rotor binding, the brake rotor is designed to have a ratio L / D of less than or equal to 10. L is the length or distance between the center of the brake pad and the sliding interface of the brake rotor (whether between the brake track and the bracket, or between the bracket and the hub), and D is the sliding interface depth. This ratio, combined with the attachment Figure 50 to Figure 53 shown and disclosed in more detail below.

[0180] Fig.50 It is along Figure 3 The line AA intercepts Figure 2A and Figure 2B 2 is a cross-sectional view of a brake rotor 200 . Fig.51 Is from Fig.50 Magnified view of the lead-out mark 5000. The depth D and length L are Fig.51 . The depth D is the depth or thickness of the sliding interface (the sliding interface is defined by the contact surface between the brake track 210 and the bracket 208). In this example, the depth D corresponds to the thickness of the brake track 210. The length L is the distance between the center of the brake pad (where the brake pad will be aligned) and the sliding interface. If the L / D ratio becomes too large, such as if the length L is significantly increased compared to the depth D, the brake track 210 may tend to become misaligned and stick to the bracket 208. Therefore, as described above, having an L / D ratio equal to or less than 10 helps prevent or limit this potential sticking.

[0181] This ratio also applies to configurations with a sliding interface at the hub attachment section. For example, Fig.52 It is along Fig.47 The line HH intercepts Fig.46 A cross-sectional view of a brake rotor 4604. The length L is Fig.52 The length L is the distance between the center of the brake pad and the sliding interface (the sliding interface is composed of the bracket 4608 and the hub 4602 ( Fig.46 ) between which the contact surface defines the distance between ). Fig.53 Is from Fig.52 The depth D is at Fig.53 Depth D is the depth or thickness of the second spline interface 4618 of the bracket 4608, which forms a sliding interface. As described above, having an L / D ratio equal to or less than 10 helps prevent or limit potential sticking. However, in other examples, other L / D ratios can be achieved.

[0182] Also disclosed herein is an example disc brake caliper that can be disposed on the inner side of a frame member of a bicycle, such as between the frame member and the wheel. For example, disclosed herein is an example rear disc brake caliper that can be coupled to the inner side (inboard side) of a rear frame portion at a hub assembly, between the rear frame portion and the rear wheel. As another example, disclosed herein is an example front brake caliper that can be coupled to the inner side of a tube or leg of a front fork, between the leg and the wheel. Thus, the example brake caliper is more protected from external elements than known disc brake calipers. Specifically, known disc brake calipers are mounted circumferentially offset from the geometric center of a frame or fork member of a bicycle. Thus, known disc brake calipers are more exposed and susceptible to being struck or contacted by foreign objects (e.g., dead branches, rocks, branches, etc.) while riding. Thus, the example disc brake calipers disclosed herein are less susceptible to wear and tear because they are disposed more inboard and at least partially protected by the frame. In addition, because the example brake caliper disclosed herein is located inboard of the frame, the example brake caliper improves the aerodynamics of the bicycle. Moreover, in this inboard position, the example brake caliper is at least partially hidden by the frame, which provides a streamlined appearance that is more aesthetically appealing to the rider than known brake calipers.

[0183] In some examples disclosed herein, an example brake caliper includes a fixed or non-movable outer brake pad and an actuable (movable) inner brake pad. In some examples, the brake caliper is used in conjunction with a brake rotor having an axially movable brake track, such as with Figures 2A to 53 One of the disclosed example brake rotors is used in combination. When the brake caliper is actuated (e.g., by pulling a brake control lever), the inner brake pad moves toward the (outer) outer brake pad, which moves the brake track toward the outer brake pad and clamps the brake track between the outer brake pad and the inner brake pad. Therefore, in some examples, by using a brake rotor with an axially movable brake track, only one brake pad needs to be movable. Therefore, the example brake caliper disclosed herein is thinner (in the axial direction) than known brake calipers. Specifically, because the outer brake pad is fixed, the outer side of the brake caliper does not require space for an actuation mechanism (e.g., a cylinder and a piston) to move the outer brake pad. Therefore, the axial width of the brake caliper is relatively small, which enables the brake caliper to be assembled between the frame and the wheel of the bicycle. In addition, due to the reduction of the actuation and adjustment mechanisms required for the fixed brake pads, the example brake caliper is lighter and less expensive.

[0184] In addition, this design enables the outboard brake pad to be disposed relatively close to the frame of the bicycle and separated from the frame only by the thickness of the caliper body or housing. Known brake calipers are mounted relatively far from the frame of the bicycle, which creates higher stresses and forces on the caliper mounting components during braking. However, because the outboard caliper portion of the example brake caliper is relatively thin, the outboard brake pad is disposed relatively close to the centerline (e.g., longitudinal axis or center axis) of the frame member of the bicycle. This reduces bending moments and torsional forces that would otherwise require additional structural material, component weight, and cost.

[0185] The example brake calipers disclosed herein may also be used with conventional or fixed brake track rotors. In such examples, the inner brake pad partially flexes the brake rotor when the brake rotor is engaged toward the outer brake pad. In other examples disclosed herein, the brake caliper may be configured such that the inner brake pad is fixed and the outer brake pad is movable. In other examples, both brake pads may be movable. The example brake calipers disclosed herein may be hydraulically actuated or cable actuated.

[0186] Fig.54 Is it possible to ride on a bicycle 100( Figure 1 ) is implemented on a perspective view of an example rear hub assembly 5400 and an example rear brake 5402. The example rear brake 5402 includes an example rear brake caliper 5404 and an example brake rotor 5406. In the example shown, the brake rotor 5406 is implemented as Figures 2A to 9 5406 can be implemented by another example brake rotor with a movable brake track disclosed herein. In other examples, the brake rotor 5406 can be implemented by any other type of brake rotor with a movable brake track or a non-movable brake track.

[0187] In the example shown, the bicycle 100 ( Figure 1 ) has a left frame portion 5408 and a right frame portion 5410. The left frame portion 5408 has a left seat stay 5412 and a left chain stay 5414, and the right frame portion 5410 has a right seat stay 5416 and a right chain stay 5418. The hub assembly 5400 includes a rear hub 112 and an axle 5420, and the rear hub 112 rotates around the axle 5420. The rear wheel 106 ( Fig.54 Not shown, but in Figure 15408 and the right frame portion 5410 (e.g., at the intersection of the left seat stay 5412 and the left chain stay 5414 and at the intersection of the right seat stay 5416 and the right chain stay 5418). The brake rotor 5406 is coupled to the rear hub 112 (e.g., via one or more fasteners, via a spline connection) and is engaged with the rear wheel 106 ( Fig.54 Not shown, but in Figure 1 5406). The axle 5420 defines an axis of rotation 5407 about which the rear hub 112 and the brake rotor 5406 rotate. The rear brake caliper 5404 can be activated (e.g., via hydraulic pressure or a cable) to engage the brake rotor 5406, thereby slowing the rear wheel 106 to slow the bicycle 100.

[0188] In the example shown, the brake rotor 5406 is disposed on the inner side of the left frame portion 5408, between the left frame portion 5408 and the rear wheel 106 (in Figure 1 102 and the rear wheel 106 (shown in FIG. 104 ). Known bicycles have a rear brake caliper located outside the frame or in line with the frame (in front of or behind the frame). In some examples, the rear brake caliper 5404 has a fixed (non-removable) outer brake pad and a movable inner brake pad, as disclosed in further detail herein. As such, the rear brake caliper 5404 is relatively thin, which enables the rear brake caliper 5404 to be mounted between the frame 102 and the rear wheel 106 ( Figure 1 ). Thus, the rear brake caliper 5404 is more protected from external elements by the frame 102 than known brake caliper locations. Additionally, this location is more aerodynamic and aesthetically appealing to the rider. Moreover, this location is also more structurally optimal for transferring forces from the rear brake caliper 5404 to the frame 102.

[0189] Fig.55 yes Fig.54 Exploded view of an example rear hub assembly 5400 and an example rear brake 5402. When assembled, the axle 5420 extends through the rear hub 112 and into the first axle opening 5500 and the second axle opening 5502 in the left frame portion 5408 and the right frame portion 5410. In some examples, the first axle opening 5500 is a through hole and the second axle opening 5502 is threaded. The axle 5420 can be inserted through the first axle opening 5500 and the hub assembly 5400 and screwed into the second axle opening 5502.

[0190] To accommodate the rear wheel 106 ( Figure 1), the chain stays 5414, 5418 and the seat stays 5412, 5416 extend a relatively long distance from their connection to the main frame (e.g., a standard chain stay length is about 430-460 millimeters (mm)). This geometric boundary condition affects the alignment tolerances of the axle openings 5500, 5502 in the frame portions. Therefore, bicycle manufacturers often enlarge the first axle opening 5500 to allow the axle 5420 to be slightly angled or tilted in the first axle opening 5500 to compensate for potential misalignment between the first axle opening 5500 and the second axle opening 5502. However, this may cause misalignment between the brake caliper and the brake rotor because the brake rotor is coupled to and referenced to the rear hub assembly. Thus, in some examples, the rear brake caliper 5404 of the illustrated example is coupled to the hub assembly 5400 such that the rear brake caliper 5404 has a relatively strong axial and radial reference to the rear hub assembly 5400, and a weaker axial and radial reference to the frame 102. As a result, because the rear brake rotor 5406 is also axially and radially referenced to the hub assembly 5400, the rear brake caliper 5404 remains axially and radially aligned with the rear brake rotor 5406. This enables the brake pads in the rear brake caliper 5404 to remain accurately positioned to the brake rotor 5406. This axial and radial reference combined with the Figures 64A to 64C More details disclosed.

[0191] In the illustrated example, the rear brake caliper 5404 includes an axle mounting bracket 5504 (also referred to as an axle mount) defining an opening 5506. The opening 5506 is used to receive the axle 5420. Specifically, when the rear brake caliper 5404 is mounted on the bicycle 100, the axle 5420 extends through the opening 5506. In some examples, the axle mounting bracket 5504 is integral with the rear brake caliper 5404. For example, the axle mounting bracket 5504 and at least a portion of the rear brake caliper 5404 can be constructed (e.g., molded, machined, etc.) as a single integral part or component (e.g., a unitary structure). For example, the rear brake caliper 5404 and the axle mounting bracket 5504 can be machined from a piece of steel or aluminum. In other examples, the axle mounting bracket 5504 can be a separate part or component that is coupled to the rear brake caliper 5404 (e.g., via one or more fasteners).

[0192] In the example shown, the hub assembly 5400 and / or the rear brake 5402 include a sleeve 5508. In the example shown, the sleeve 5008 has an enlarged end 5509 and a threaded distal end 5511. When assembled, the sleeve 5508 extends through the opening 5506 so that the enlarged end 5509 engages the inside of the axle mounting bracket 5504. The sleeve 5508 extends at least partially into the first axle opening 5500 in the left frame portion 5408. In some examples, the sleeve 5508 extends completely through the first axle opening 5500. The axle 5420 extends through the sleeve 5508 and engages with the sleeve 5508. Thus, the axle mounting bracket 5504 (via the sleeve 5508) forms a first contact point with the bicycle 100.

[0193] In some examples, the axle 5420 can be tightened to axially clamp the sleeve 5508 to the rear hub 112. In some examples, the hub assembly 5400 and / or the rear brake 5402 include a nut 5510 that can be screwed onto the distal end 5511 of the sleeve 5508. This connection clamps the axle mounting bracket 5504 (and therefore the rear brake 5402) to the hub assembly 112. In some examples, a washer or bushing 5512 can be provided in the sleeve 5508 for attachment or to allow for various attachment geometries. In some examples, the washer 5514 is arranged around the sleeve 5508 between the axle mounting bracket 5504 and the inner side 5515 of the left frame portion 5408.

[0194] In the example shown, the rear brake caliper 5404 also includes a frame mounting bracket 5516 (also referred to as a frame mount) that is coupled to the frame 102 of the bicycle 100. Specifically, in this example, the frame mounting bracket 5516 is configured to be coupled to the left rear seat stay 5412 of the left frame portion 5408. Thus, the frame mounting bracket 5516 forms a second contact point with the bicycle 100.

[0195] In the example shown, the hub assembly 5400 and / or the rear brake 5402 include a post 5517 coupled to and extending inwardly from the left frame portion 5408. In the example shown, the frame mounting bracket 5516 defines an opening 5518. When assembled, the post 5517 extends through the opening 5518. Thus, in this example, the rear brake caliper 5404 is coupled to the bicycle 100 via two contact points: at the axle 5420 and at the frame 102. These two contact points hold the rear brake caliper 5404 in place and prevent the rear brake caliper 5404 from rotating or twisting during braking. However, in other examples, the rear brake caliper 5404 can be coupled to the bicycle 100 via more or fewer contact points, and / or these contact points can be at other locations.

[0196] In some examples, the frame mounting bracket 5516 (and therefore the rear brake caliper 5404) can be axially positioned on the post 5517. This enables the rear brake caliper 5404 to maintain a weaker reference to the frame 102 so that the rear brake caliper 5404 can maintain a stronger axial and radial reference to the hub assembly 5400, and therefore maintain a stronger axial and radial reference to the brake rotor 5406. In some examples, the frame mounting bracket 5516 can be clamped onto the post 5517 after the axle mounting bracket 5504 is coupled to the hub assembly 5400. In some examples, the rear brake 5402 includes a sleeve 5520 to be disposed around the post 5517. The sleeve 5520 can increase the contact area between the frame mounting bracket 5516 and the post 5517. In other examples, post 5517 may be implemented as a bolt that may be tightened to couple (eg, clamp) rear brake caliper 5404 to frame 102 .

[0197] Fig.56 5404 is an exploded view of the rear brake caliper 5404. In the example shown, the rear brake caliper 5404 includes an outboard caliper portion 5600 and an inboard caliper portion 5602. When the rear brake caliper 5404 is mounted on the bicycle 100 ( Figure 1 ), the outboard caliper portion 5600 is disposed on the inner side of the frame 102. In addition, when the rear brake caliper 5404 is assembled, the inboard caliper portion 5602 is coupled to the outboard caliper portion 5600. When the rear brake caliper 5404 is coupled to the bicycle 100, the inboard caliper portion 5602 is disposed on the inner side of the outboard caliper portion 5600.

[0198] exist Fig.56 In the example shown, the outboard caliper portion 5600 includes an outboard caliper body 5604 and an outboard brake pad 5606 (a first brake pad). In this example, the outboard brake pad 5606 is fixed (immovable) relative to the outboard caliper body 5604. The outboard brake pad 5606 is coupled to the outboard caliper body 5604 via one or more threaded fasteners 5608 (e.g., bolts or screws). In addition or alternatively, in other examples, the outboard brake pad 5606 may be coupled to the outboard caliper body 5604 via other coupling techniques (e.g., friction fit, latch, adhesive, etc.). In the example shown, the outboard caliper body 5604 includes a fin 5610 (in Fig.56 5610 increases the surface area of ​​the rear brake caliper 5404 to help dissipate heat to the surrounding air. In other examples, fins may not be included.

[0199] In the example shown, the outboard caliper portion 5600 includes an axle mounting bracket 5504. The axle mounting bracket 5504 includes an axle 5420 ( Fig.54) extends through an opening 5506. In the example shown, the axle mounting bracket 5504 is coupled to and extends from the outboard caliper body 5604. In this example, the axle mounting bracket 5504 is integral with the outboard caliper body 5604. For example, the axle mounting bracket 5504 and the outboard caliper body 5604 can be constructed (e.g., molded, machined, etc.) as a single integral part or component (e.g., a unitary structure). In other examples, the axle mounting bracket 5504 can be a separate part or component coupled to the outboard caliper body 5604 (e.g., via one or more fasteners).

[0200] In the example shown, the inner caliper portion 5602 includes an inner caliper body 5612 and an inner brake pad 5614 (second brake pad). When the rear brake caliper 5404 is assembled, the inner caliper body 5612 is coupled to the outer caliper body 5604. In this example, the outer caliper body 5604 and the inner caliper body 5612 are coupled by first and second outer threaded fasteners 5616a and 5616b (e.g., bolts or screws) extending through the outer caliper body 5604 and entering the inner caliper body 5612, and first and second inner threaded fasteners 5618a and 5618b (e.g., bolts or screws) extending through the inner caliper body 5612 and entering the outer caliper body 5604. Thus, the threaded fasteners 5616a, 5616b, 5618a, 5618b axially span the brake rotor 5406 ( Fig.54 ), and provide structural rigidity to the rear brake caliper 5404 against the driven piston axial force. The outboard caliper body 5604 and the inboard caliper body 5612 can be separated without fluid loss. In addition or alternatively, in other examples, the outboard caliper body 5604 and the inboard caliper body 5612 can be connected via more or fewer fasteners and / or via other connection techniques (e.g., friction fit, latch, adhesive, etc.). In some examples, when the rear brake caliper 5404 is assembled, one or more spacers 5620a, 5620b, 5620c are disposed between the outboard caliper body 5604 and the inboard caliper body 5612. In some examples, one or more of the threaded fasteners 5616a, 5616b, 5618a, 5618b extend through certain of the spacers 5620a, 5620b, 5620c. For example, when the rear brake caliper 5404 is assembled, the first outer threaded fastener 5616a extends through the first spacer 5620a, the first inner threaded fastener 5618a extends through the second spacer 5620b, and the second inner threaded fastener 5618b extends through the third spacer 5620c.

[0201] In this example, the inner brake pad 5614 is an actuating or moving brake pad. Specifically, the inner brake pad 5614 is movable relative to the inner caliper body 5612, and therefore is movable relative to the outer brake pad 5606 (fixed brake pad). Fig.56 1 and 2. A portion of a hydraulic brake line 5622 (e.g., a hose) is shown in FIG. The hydraulic brake line 5622 can transfer hydraulic fluid to and from the rear brake caliper 5404. The hydraulic brake line 5622 is coupled to (e.g., screwed into) the inner caliper body 5612. In this example, the inner caliper body 5612 defines three cylinders 5624. The inner caliper portion 5602 includes three pistons 5626 located in corresponding cylinders 5624. The pistons 5626 engage the inner brake pads 5614. When the rear brake control lever is actuated, hydraulic fluid is pushed into the three cylinders 5624, which pushes the pistons 5626 outward to move the inner brake pads 5614 toward the outer brake pads 5606. This movement provides a clamping force that engages the brake rotor 5406 to slow the bicycle 100. In the example shown, the inboard caliper portion 5602 includes a seal 5628 that can be disposed in the cylinder 5618 (between the cylinder wall and the piston 5626) to prevent hydraulic fluid from leaking from the cylinder 5624. The inboard caliper portion 5602 also includes a drain plug 5630 that can be removed to drain hydraulic fluid from the inboard caliper body 5612.

[0202] When the rear brake caliper 5404 is released, the piston 5626 moves back into the cylinder 5624, and the inboard brake pad 5614 moves away from the outboard brake pad 5606. In some examples, the piston 5626 is coupled to the inboard brake pad 5614 (e.g., via fasteners, adhesives, magnets, etc.). Thus, when the piston 5626 moves back into the cylinder 5618 (e.g., via lower hydraulic pressure in the cylinder 5624), the inboard brake pad 5614 moves toward the inboard caliper body 5612 along with the piston 5626. Additionally or alternatively, the inboard caliper portion 5602 may include a return mechanism for moving the inboard brake pad 5614 back toward the inboard caliper body 5612 after the hydraulic pressure is removed. For example, the inboard caliper portion 5602 may include a magnet 5632 coupled (e.g., glued) to the inboard caliper body 5612. The inboard brake pad 5614 may be constructed at least in part of steel or other magnetic materials. When the hydraulic brake pressure is released, the magnetic attraction between the inner brake pad 5614 and the magnet 5632 causes the inner brake pad 5614 to move back toward the inner caliper body 5612 to push the piston 5626 into the cylinder 5624. In addition or alternatively, in other examples, other types of return mechanisms (e.g., springs) may be used. Although in this example, the inner caliper body 5612 includes three cylinders and pistons, in other examples, the inner caliper body 5612 may have more or fewer cylinders and pistons.

[0203] In the example shown, the inner brake pad 5614 includes a guide 5634. When the rear brake caliper 5404 is assembled, the guide 5634 is arranged around the second spacer 5620b. When the inner brake pad 5614 moves, the guide 5634 slides along the second spacer 5620b. This helps ensure that the inner brake pad 5614 remains parallel to the brake rotor 5406 ( Fig.54 ).

[0204] In the illustrated example, the rear brake caliper 5404 includes a frame mounting bracket 5516. The frame mounting bracket 5516 is to be coupled to at least one of the outboard caliper body 5604 or the inboard caliper body 5612. In this example, when the rear brake caliper 5404 is assembled, the frame mounting bracket 5516 is coupled (e.g., clamped) between the outboard caliper body 5604 and the inboard caliper body 5612. In some examples, one or more of the threaded fasteners 5616a, 5616b, 5618a, 5618b extend through the frame mounting bracket 5516. For example, a second outboard threaded fastener 5616b and a second inboard threaded fastener 5618b extend through the frame mounting bracket 5516. The frame mounting bracket 5516 includes an opening 5518. In some examples, the opening 5518 receives a post 5517 ( Fig.55). In some examples, the frame mounting bracket 5516 can be clamped to the post 5517. In some examples, the rear brake caliper 5404 includes a sleeve 5520 ( Fig.55 ). In other examples, the post 5517 can be implemented as a fastener (e.g., a bolt, a screw, a rivet, etc.) that can be inserted through the opening 5518 and attached to the frame 102 of the bicycle 100 to couple the rear brake caliper 5404 to the frame 102. In some examples, the frame mounting bracket 5516 can be integrally formed with one of the outboard caliper body 5604 or the inboard caliper body 5612.

[0205] When the rear brake caliper 5404 is assembled, the outboard caliper body 5604, the inboard caliper body 5612, and the frame mounting bracket 5516 form the body or housing of the rear brake caliper 5404. The outboard brake pad 5606 is axially fixed relative to the body, and the inboard brake pad 5614 is axially movable relative to the body. Although in this example, the body is formed of three separate bodies, in other examples, one or more of these bodies can be integrally formed as a single unitary part or component (e.g., a unitary structure). For example, the frame mounting bracket 5516 can be integral with the outboard caliper body 5604.

[0206] In some examples, the outer brake pad 5606 and the inner brake pad 5614 have the same size and material. In other examples, the outer brake pad 5606 and the inner brake pad 5614 may have different geometries and / or materials. For example, the outer brake pad 5606 may be more thermally conductive to improve heat dissipation and may have a larger surface area to reduce wear rate. The inner brake pad 5614 may be less thermally conductive to have a lower thermal conductivity relative to the hydraulic fluid.

[0207] Fig.57 is a top view of the rear brake caliper 5404, and Fig.58 is along Fig.57 A cross-sectional view of the rear brake caliper 5404 taken along line II. Fig.57 and Fig.58 As shown, the outer caliper portion 5600 including the outer brake pad 5606 (fixed pad) is relatively thin or narrow. This reduces the axial width of the rear brake caliper 5404 and enables the rear brake caliper 5404 to be set on the bicycle 100 ( Figure 1 ) frame 102( Fig.54 ) on the inner side. Fig.58Also shown are the outboard brake pad 5606, the inboard brake pad 5614, one piston 5626 within one of the cylinders 5624, and one of the seals 5628. The inboard brake pad 5614 can move toward or away from the outboard brake pad 5606.

[0208] Fig.59 It is a bicycle 100 ( Figure 1 ) is a top view of the rear hub assembly 5400 and the rear brake 5402 on the frame 102. Fig.59 As shown, the rear brake caliper 5404 is disposed on the inner side of the left frame portion 5408 of the frame 102. In some examples, the outer side or outer surface 5900 of the outer caliper body 5604 engages with (and is inboard of) the inner side 5515 of the left seat stay 5412 and the left chain stay 5414. In some examples, the entire rear brake caliper 5404 is disposed on the inner side of the portion of the left frame portion 5408 that is radially and circumferentially aligned with the rear brake caliper 5404. In other examples, one or more portions of the rear brake caliper 5404 may extend beyond the inner side 5517 (extend to the outer side of the inner side 5517).

[0209] Fig.60 It is a bicycle 100 ( Figure 1 ) on the frame 102 of the rear hub assembly 5400 and the rear brake 5402. When the bicycle 100 moves in the forward direction, the brake rotor 5406 moves in the Fig.60 The centerline is marked as extending between the left upper stay 5412 and the left chain stay 5414 and intersecting the rotation axis 5407. The centerline is the geometric center of the left frame portion 5408. Fig.60 As shown, the rear brake caliper 5404 is disposed along the centerline (e.g., bisected by the centerline), and thus substantially between the left seat stay 5412 and the left chain stay 5414. Thus, the rear brake caliper 5404 is geometrically centered between the left seat stay 5412 and the left chain stay 5414. This is an optimal location for transmitting braking forces to the frame 102.

[0210] Fig.61 5504 and the center axis 6102 of the opening 5518 of the frame mounting bracket 5516. This distance represents the radial distance between the two points at which the rear brake caliper 5404 is attached to the bicycle 100. In some examples, the radial installation distance is greater than the radial distance between the center axis 6100 of the opening 5506 and the brake pad. This helps reduce the radial distance between the center axis 6100 of the opening 5506 and the brake pad. Fig.55 ) is transmitted to the frame 102 ( Fig.55) load. The rear brake caliper 5404 can be constructed or designed to have a larger or smaller installation distance. When the rear brake caliper 5404 is coupled to the bicycle 100, the opening 5506 and the opening 5518 are arranged in the axial direction (relative to the rotation axis 5407 ( Fig.54 ))Directional.

[0211] Fig.62 5404 is an end view of the rear brake caliper 5404. Fig.62 As shown, the opening 5518 ( Fig.61 ) is parallel to the opening 5506 in the axle mounting bracket 5504 ( Fig.61 ) of the central axis 6100. In the example shown, the axle mounting bracket 5504 is formed from the opening 5506 ( Fig.61 ) to the outside caliper body 5604 inward (at Fig.62 Thus, the first attachment point (opening 5506 ( Fig.61 )) and the second attachment point (opening 5518 ( Fig.61 )) is offset in the axial direction by a mounting offset. In some examples, the left rear upper fork 5412 ( Fig.60 ) bends inward. This mounting offset allows the axle mounting bracket 5504 to be positioned above the brake rotor 5406 ( Fig.54 ) is connected to the outer side of the axle 5420 ( Fig.54 ) and enables the frame mounting bracket 5516 to be coupled to the left rear seat fork 5412 near the axial position of the brake rotor 5406.

[0212] Fig.63A is an inside side view of the rear brake caliper 5404, and Fig.63B is along Fig.63A 56. A cross-sectional view of the rear brake caliper 5404 taken along line JJ of FIG. The hydraulic brake line 5622 is coupled to the inner caliper body 5612. The first channel 6300 in the inner caliper body 5612 fluidically couples the hydraulic brake line 5622 to the first cylinder 5624a, the second channel 6302 in the inner caliper body 5612 fluidically couples the first cylinder 5624a and the second cylinder 5624b, and the third channel 6304 in the inner caliper body 5612 fluidly couples the second cylinder 5624b and the third cylinder 5624c. Thus, the three cylinders 5624a to 5624c are fluidly coupled. Thus, when the hydraulic brake line 5622 supplies hydraulic fluid, the hydraulic fluid is supplied to all three cylinders 5624a to 5624c. The drain plug 5630 is screwed into the fourth channel 6306 fluidly coupled to the third cylinder 5624c.

[0213] Fig.64A It is along Fig.60 A cross-sectional view of the frame 102, the hub assembly 5400 and the rear brake 5402 taken along line KK. Fig.64A As shown, the rear hub assembly 5400 includes an inner shaft 6400. The axle 5420 extends through the inner shaft 6400 and engages with the inner shaft 6400 (e.g., via an interference fit). The rear hub 112 rotates around the inner shaft 6400 via bearings 6402, 6404. The rear brake rotor 5406 is rigidly coupled to the rear hub 112 (e.g., via one or more fasteners). The rear brake rotor 5406 rotates with the rear hub 112 around the inner shaft 6400 and the axle 5420. Therefore, the brake rotor 5406 has a strong axial and radial reference to the rear hub 112 and the rest of the hub assembly 5400. In the example shown, the hub assembly 5400 includes a hub end cap 6406 on the end of the rear hub 112.

[0214] Fig.64B Is from Fig.64A An enlarged view of the lead-in mark 6407. Fig.64B As shown, the sleeve 5508 is disposed in the opening 5506 of the axle mounting bracket 5504. The inner surface 6410 of the axle mounting bracket 5504 forming the opening 5506 contacts the outer surface 6412 of the sleeve 5508. In the example shown, the inner surface 6410 has a shoulder 6414 having a shape corresponding to the enlarged end 5509 of the sleeve 5508. This prevents the rear brake caliper 5404 from moving inwardly relative to the sleeve 5508, and therefore prevents inward movement relative to the axle 5420. The sleeve 5508 fits tightly in the opening 5506 of the axle mounting bracket 5504. In some examples, the inner surface 6410 of the axle mounting bracket 5504 and the outer surface 6412 of the sleeve 5508 form an interference fit (sometimes referred to as a press fit or friction fit). This creates a strong radial reference between the rear brake caliper 5404 and the hub assembly 5400.

[0215] In the example shown, the enlarged end 5509 of the sleeve 5508 engages with the hub end cap 6406. The sleeve extends from the outer side 6409 of the axle mounting bracket 5504. The sleeve 5508 extends through the first axle opening 5500 in the left frame portion 5408. In the example shown, the sleeve 5508 is longer than the first axle opening 5500. Therefore, a portion of the sleeve 5508 is on the inner side of the left frame portion 5408, and the distal end 5511 of the sleeve 5508 is on the outer side of the left frame portion 5408. The axle 5420 extends through the sleeve 5508. Therefore, in this example, the axle 5420 does not contact the left frame portion 5408. In the example shown, the inner surface 6416 of the sleeve 5508 near the distal end 5511 has a shoulder 6418. The axle 5420 has a head 6420 that engages with the shoulder 6418. When the axle 5420 is tightened, the sleeve 5508 is axially clamped and fixed between the head 6420 and the hub 112. This creates a strong axial reference between the rear brake caliper 5404 and the rear hub assembly 5400, and therefore between the rear brake caliper 5404 and the rear brake rotor 5406. In addition, a nut 5510 can be threaded onto the distal end 5511 of the sleeve 5508. A washer 5514 is disposed around the sleeve 5508 between the axle mounting bracket 5504 and the left frame portion 5408. When the nut 5510 is tightened, the axle mounting bracket 5504 is axially fixed with the hub assembly 5400.

[0216] In some examples, the axle 5420, the axle mounting bracket 5504 and the sleeve 5508, and the hub end cap 6406 may be constructed of metal. Such metal-to-metal interfaces and dimensional surface characteristics (e.g., greater surface area) create a strong planar reference, and thus a strong axial reference between the components. Therefore, even if the hub assembly 5400 is misaligned with the frame 102, the rear brake caliper 5404 remains in the same axial position relative to the hub assembly 5400, and therefore the rear brake caliper 5404 remains in the same axial position relative to the rear brake rotor 5406. In some examples, the washer 5514 is constructed of a compliant material (e.g., an elastically deformable material). For example, the washer 5514 may be constructed of plastic and / or rubber. Therefore, when the nut 5510 is tightened, the washer 5514 may be slightly compressed. However, the axle mounting bracket 5504 remains in the same axial position on the sleeve 5508, and thus maintains a strong axial reference to the hub assembly 5400.

[0217] The rear brake caliper 5404 also has a strong radial reference to the hub assembly 5400. The sleeve 5508 is relatively long and therefore has a wider support width to the shaft 5420. The axle 5420, the sleeve 5508, and the axle mounting bracket 5504 may have a relatively tight fit, such as an interference fit or a transition fit (sometimes referred to as a slip fit). The wider support width and fit result in a relatively strong radial reference between the axle mounting bracket 5504 and the hub assembly 5400. Therefore, the rear brake caliper 5404 remains in the same radial position relative to the rear brake rotor 5406. However, the sleeve 5508 may have a relatively loose fit in the first axle opening 5500. For example, the first axle opening 5500 and the sleeve 5508 may form a clearance fit. Such a loose fit with a narrow support width achieves a weaker reference for tolerance compensation. Specifically, this allows for some radial movement between the axle / sleeve and the frame 102, which is advantageous when installing the hub assembly 5400 because the first axle opening 5500 and the second axle opening 5502 may not be perfectly aligned. Thus, in some examples, the radial fit between the first axle opening 5500 and the axle 5420 is tighter than the radial fit between the sleeve 5508 and the frame 102. Additionally, in some examples, the axial length of the radial fit between the first axle opening 5500 and the axle 5420 is longer than the axial length of the radial fit between the sleeve 5508 and the frame 102. While in this example, the sleeve 5508 is a separate part or component, in other examples, the sleeve 5508 can be integral with the axle mounting bracket 5504. For example, the axle mounting bracket 5504 and the sleeve 5508 can be formed of a single integral part or component (e.g., a unitary structure).

[0218] Fig.64C Is from Fig.64A6409 of FIG. 5514. Post 5517 is coupled to and extends to the inner side of left seat stay 5412. In some examples, post 5517 is integral with left seat stay 5412. In the example shown, sleeve 5520 is disposed around post 5517, which increases the contact area between frame mounting bracket 5516 and post 5517. In some examples, sleeve 5520 is constructed of a flexible material such as rubber or plastic. Post 5517 and sleeve 5520 extend through opening 5518 in frame mounting bracket 5516 of rear brake caliper 5404. In some examples, threaded fastener 6422 is screwed into the end of post 5517 to hold sleeve 5520 on post 5517 and prevent rear brake caliper 5404 from moving inwardly away from post 5517. In some examples, when the threaded fastener 6422 is tightened, the sleeve 5520 is compressed axially and, therefore, expands in a radial direction. The sleeve 5520 can expand into the frame mounting bracket 5516, which helps to radially clamp the frame mounting bracket 5516 to the post 5517. In other examples, the sleeve 5520 and / or the threaded fastener 6422 may not be used. Instead, the frame mounting bracket 5516 can be in direct contact with the post 5517.

[0219] The following is combined with Fig.64B and Fig.64C An example method of installing a hub assembly 5400 and a rear brake 5402 is disclosed. Fig.64B , a sleeve 5508 may be inserted through the opening 5506 in the axle mounting bracket 5504, and a washer 5514 may be placed around the sleeve 5508. The axle mounting bracket 5504 may then be positioned within the left frame portion 5408 and moved toward the left frame portion 5408 to insert the sleeve 5508 into the first axle opening 5500. The rear brake rotor 5406 is then coupled to the rear hub 112 (e.g., via one or more fasteners, via a spline connection, etc.), and the rear hub 112 is then positioned between the left frame portion 5408 and the right frame portion 5410, such that the axle mounting bracket 5504 is disposed between the rear hub 112 and the left frame portion 5408. The axle 5420 is then inserted (from the outside) through the sleeve 5508 and the first axle opening 5500 and through the rear hub 112 into the right frame portion 5510 ( Fig.55 ) in the second axle opening 5502 ( Fig.55). The axle 5420 may then be tightened to axially secure the axle mounting bracket 5504 and the rear hub 112, thereby axially and radially securing the rear brake caliper 5404 and the hub assembly 5400. The nut 5510 may then be threaded onto the distal end 5511 of the sleeve 5508. After the rear brake caliper 5404 is secured to the hub assembly 5400, the rear brake caliper 5404 may be coupled to the left rear seat stay 5412 via the post 5517. See FIG. Fig.64C , insert the post 5517 through the sleeve 5520, through the opening 5518 in the frame mounting bracket 5516, and into the left rear seat stay 5412. At this point, the bracket 5516 can still move (e.g., slide) in the axial direction relative to the post 5517. This enables the rear brake caliper 5404 to have a weaker axial reference to the frame 102 and a stronger axial reference to the hub assembly 5400. In some examples, the threaded fastener 6422 can then be screwed into the post 5517 to expand the sleeve 5520 and axially fix the rear brake caliper 5404 to the post 5517. In some examples, the rear brake caliper 5404 is substantially fixed in the axial direction. In other examples, the rear brake caliper 5404 can still slide axially on the post 5517. Therefore, the rear brake caliper 5404 can float axially on the post 5517.

[0220] This article also discloses an example front brake caliper that can be implemented on a front fork or other frame member of a bicycle for a front brake. The example front brake caliper can be disposed inside a portion of a front fork or frame member and thus benefit from the same advantages disclosed above in conjunction with the rear brake caliper.

[0221] Fig.65 It is a bicycle 100 ( Figure 1 ) is a perspective view of a front fork 108. In the example shown, the front fork 108 includes a steering tube 6500, a crown 6502, a first leg 6504 (left leg), and a second leg 6506 (right leg) spaced apart from the first leg 6504. In this example, the front fork 108 is a suspension component and has telescoping legs or tubes to help absorb shock and vibration. However, in other examples, the legs 6504, 6506 may be fixed and may not compress or expand.

[0222] In the example shown, the first leg 6504 and the second leg 6506 include a first upper tube 6508 and a second upper tube 6510 (sometimes referred to as a leg portion or a strut) and a first lower tube 6512 and a second lower tube 6514 (sometimes referred to as a leg portion or a lower portion), respectively. The first upper tube 6508 and the second upper tube 6510 may be collectively referred to as an upper tube assembly, and the first lower tube 6512 and the second lower tube 6514 may be collectively referred to as a lower tube assembly 6516. The steering tube 6500 is coupled to the frame 102 ( Figure 1) and handlebar 120( Figure 1 ). The first upper tube 6508 and the second upper tube 6510 are connected via the crown 6502. The first lower tube 6512 and the second lower tube 6514 are connected via an arch 6518 (sometimes called a fork brace or stabilizer). The first lower tube 6512 and the second lower tube 6514 include a support for the front wheel 104 ( Figure 1 ) are attached to the respective front wheel attachment portions 6520, 6522 of the front fork 108, such as holes (e.g., eyelets) or U-shaped slots (dropouts). The first upper tube 6508 and the second upper tube 6510 are slidably received within the respective first lower tube 6512 and the second lower tube 6514. Thus, the first upper tube 6508 and the second upper tube 6510 form a telescopic arrangement with the respective first lower tube 6512 and the second lower tube 6514. During the compression stroke, the first upper tube 6508 and the second upper tube 6510 move into or toward the respective first lower tube 6512 and the second lower tube 6514, and during the rebound stroke, the first upper tube 6508 and the second upper tube 6510 move out of or away from the respective first lower tube 6512 and the second lower tube 6514. In some examples, a spring and / or a damper is incorporated into the first leg 6504 and / or the second leg 6506 .

[0223] Disclosed below is a device that can be coupled to a fork (such as Fig.65 108). The example brake caliper may be disposed on the inner side of the leg to which the brake caliper is attached. The example front brake caliper may be substantially the same as the example rear brake caliper 5404 disclosed above, but without the axle mounting bracket 5504 and the frame mounting bracket 5516. Thus, any example structural and / or functional aspects disclosed in connection with the rear brake caliper 5404 may also be applicable to the front brake caliper disclosed below.

[0224] Fig.66 and Fig.67 6600 and an example front brake caliper 6602. The example down tube assembly 6600 may be implemented as Fig.65108. The down tube assembly 6516 on the example front fork 108. The down tube assembly 6600 includes a first down tube 6604 (which forms a portion of the first leg or left leg 6504), a second down tube 6606 (which forms a portion of the second leg or right leg 6506) spaced apart from the first down tube 6604, and an arch 6608 between the first down tube 6604 and the second down tube 6606. The first down tube 6604 has a first wheel attachment portion 6607, and the second down tube 6606 has a second wheel attachment portion 6609. In this example, the wheel attachment portions 6607, 6609 are for attaching the front wheel 104 ( Figure 1 ) is attached to the front fork 108 ( Fig.65 ) through a hole (e.g., an eyelet). In other examples, the wheel attachment portions 6607, 6609 can be implemented as U-shaped grooves.

[0225] In the illustrated example, the front brake caliper 6602 is coupled to the first down tube 6604. In this example, the front brake caliper 6602 is disposed on the inner side of the first down tube 6604 (e.g., coupled to the inner side of the first down tube 6604). In the illustrated example, the front brake caliper 6602 includes an outboard caliper portion 6610 and an inboard caliper portion 6612 inboard of the outboard caliper portion 6610. The outboard caliper portion 6610 is substantially identical to the outboard caliper portion 5600 of the example rear brake caliper 5404 (without the axle mounting bracket 5504). Therefore, any structural and / or functional features disclosed in connection with the outboard caliper portion 5600 may be equally applicable to the outboard caliper portion 6610. The outboard caliper portion 6610 includes an outboard caliper body 6614 and an outboard brake pad (e.g., identical to the outboard brake pad 5606) coupled to the outboard caliper body 6614. An outboard caliper body 6614 is coupled to the inner side of the first down tube 6604. In this example, the outboard brake pad is fixed (non-movable) relative to the outboard caliper body 6614.

[0226] The inboard caliper portion 6612 is substantially identical to the inboard caliper portion 5602 of the example rear brake caliper 5404 disclosed herein. Thus, any structural and / or functional features disclosed in conjunction with the inboard caliper portion 5602 may be equally applicable to the inboard caliper portion 6612. The inboard caliper portion 6612 includes an inboard caliper body 6616 and an inboard brake pad (e.g., identical to the inboard brake pad 5614). The inboard caliper body 6616 is coupled to the outboard caliper body 6614 (e.g., via one or more threaded fasteners). The inboard caliper body 6616 is disposed inboard of the outboard caliper body 6614. The inboard brake pad is movable relative to the inboard caliper body 6616, and therefore, relative to the outboard brake pad.

[0227] Fig.68 and Fig.69 600 and an example front brake caliper 6602. In this example, the front brake caliper 6602 is coupled to the first down tube 6604 via a first threaded fastener 6800 and a second threaded fastener 6802. In the example shown, the first down tube 6604 is located at a first mount 6804 and a second mount 6806 on the inner side of the first down tube 6604. The front brake caliper 6602 is coupled to the first mount 6804 via the first threaded fastener 6800 and to the second mount 6806 via the second threaded fastener 6802. Thus, the front brake caliper 6602 is coupled to the first down tube 6604 at two points. In this example, the first threaded fastener 6800 and the second threaded fastener 6802 are parallel to each other and are arranged in an axial direction (relative to the front wheel 104 ( Figure 1 )'s rotational axis). In other examples, the front brake caliper 6602 can be coupled to the first down tube 6604 via more or fewer threaded fasteners and / or other coupling mechanisms (e.g., latches, pins).

[0228] In the illustrated example, the first down tube 6604 includes a contact plate 6808. When the front brake caliper 6602 is coupled to the first mount 6804 and the second mount 6806, the outboard caliper body 6614 engages (i.e., contacts) the contact plate 6808. The contact plate 6808 provides a secure mounting surface for the front brake caliper 6602 to reduce torsional loads caused by braking. The contact plate 6808 increases the surface area contact between the front brake caliper 6602 and the first down tube 6604, and thus acts as a heat sink to help dissipate heat from the front brake caliper 6602.

[0229] Fig.70 is a rear view of the example down tube assembly 6600, and Fig.71 It is along Fig.70 A cross-sectional view of the lower tube assembly 6600 taken along line LL. Fig.70 and Fig.71 As shown, the front brake caliper 6602 is disposed on the inner side of the first down tube 6604. Since only one brake pad is movable, the front brake caliper 6602 is relatively thin, which enables the front brake caliper 6602 to be disposed on the inner side of the first down tube 6604 to fit between the first down tube 6604 and the front wheel 104 ( Figure 1 ). In addition, because the outboard brake pad is fixed and does not require a fluid cylinder, the outboard brake pad can be disposed relatively close to the support structure (i.e., the first down tube 6604). This is optimal for transmitting braking force from the front brake caliper 6602 to the support structure (i.e., the first down tube 6604).

[0230] like Fig.70As shown, the first down tube 6604 has a first central axis 7000, and the second down tube 6606 has a second central axis 7002. In the example shown, the entire front brake caliper 6602 is disposed inside the first central axis 7000. The first central axis 7000 and the second central axis 7002 are located in a central plane 7004, which is a plane that bisects the first down tube 6604 and the second down tube 6606. Fig.71 The center plane 7004 is shown from one side. The center plane 7004 is Fig.71 A vertical plane extending into and out of the page in the orientation of Fig.71 As shown, center plane 7004 intersects front brake caliper 6602. In this example, center plane 7004 intersects a cylinder in front brake caliper 6602. Specifically, in this example, front brake caliper 6602 has three cylinders, and center plane 7004 intersects the middle one of these cylinders. In other examples, front brake caliper 6602 can be positioned further forward or rearward ( Fig.71 on the right or left side of the image).

[0231] Fig.72 and Fig.73 7200 and another example front brake caliper 7202. The example down tube assembly 7200 may be implemented as Fig.65 108. The down tube assembly 7200 includes a first down tube 7204 (which forms a portion of a first or left leg 6504), a second down tube 7206 (which forms a portion of a second or right leg 6506) spaced apart from the first down tube 7204, and an arch 7208 between the first down tube 7204 and the second down tube 7206. The first down tube 7204 has a first wheel attachment portion 7207, and the second down tube 7206 has a second wheel attachment portion 7209.

[0232] In the example shown, the front brake caliper 7202 is coupled to the first down tube 7204. In this example, the front brake caliper 7202 is disposed on the inner side of the first down tube 7204 (e.g., coupled to the inner side of the first down tube 7204). In the example shown, the front brake caliper 7202 includes an outboard caliper portion 7210 and an inboard caliper portion 7212 inboard of the outboard caliper portion 7210. The outboard caliper portion 7210 is substantially identical to the outboard caliper portion 5600 of the example rear brake caliper 5404 (without the axle mounting bracket 5504). Therefore, any structural and / or functional features disclosed in conjunction with the outboard caliper portion 5600 may be equally applicable to the outboard caliper portion 7210. The outboard caliper portion 7210 includes an outboard caliper body 7214 and an outboard brake pad (e.g., identical to the outboard brake pad 5606) coupled to the outboard caliper body 7214. The outboard caliper body 7214 is coupled to the inner side of the first down tube 7204. In this example, the outboard brake pad is fixed (non-movable) relative to the outboard caliper body 7214.

[0233] The inboard caliper portion 7212 is substantially identical to the inboard caliper portion 5602 of the example rear brake caliper 5404 disclosed herein. Thus, any structural and / or functional features disclosed in conjunction with the inboard caliper portion 5602 may be equally applicable to the inboard caliper portion 7212. The inboard caliper portion 7212 includes an inboard caliper body 7216 and an inboard brake pad (e.g., identical to the inboard brake pad 5614). The inboard caliper body 7216 is coupled to the outboard caliper body 7214 (e.g., via one or more threaded fasteners). The inboard caliper body 7216 is disposed inboard of the outboard caliper body 7214. The inboard brake pad is movable relative to the inboard caliper body 7216, and therefore, relative to the outboard brake pad.

[0234] Fig.74 and Fig.757404 and 7406. FIG. 74 is an exploded perspective view of an example down tube assembly 7200 and an example front brake caliper 7202. In this example, a first down tube 7204 has an upper post mount 7400 and a lower post mount 7402 used on a known or conventional fork. The upper post mount 7400 and the lower post mount 7402 can be used to attach a known brake caliper to the rearward facing side of the first down tube 7204. The front brake caliper 7202 can be coupled to the first down tube 7204 using one of the upper post mount 7400 or the lower post mount 7402, thereby utilizing existing structures. In this example, the front brake caliper 7202 is coupled to the upper post mount 7400 via a first threaded fastener 7404. In the example shown, the first down tube 7204 has a mount 7406 on the inner side of the first down tube 7204. The front brake caliper 7202 is coupled to the mount 7406 via a second threaded fastener 7408. Thus, the front brake caliper 7202 is coupled to the first down tube 7204 at two points. In this example, the second threaded fastener 7408 is oriented in an axial direction, and the first threaded fastener 7404 is oriented in a direction perpendicular to and offset from the second threaded fastener 7408. In the example shown, the mount 7406 is relatively large and flat (or flat). The mount 7406 forms a larger contact surface with the front brake caliper 7202 to help dissipate heat from the front brake caliper 7202. In other examples, the front brake caliper 7702 can be coupled to the first down tube 7204 via more or fewer threaded fasteners and / or other coupling mechanisms (e.g., latches, pins).

[0235] Fig.76 is a rear view of the example down tube assembly 7200, and Fig.77 It is along Fig.76 The cross-sectional view of the lower tube assembly 7200 taken along the line MM. The position or positioning of the front brake caliper 7202 relative to the first lower tube 7204 is combined with the above Fig.70 and Fig.71 The disclosed front brake caliper 6602 is substantially identical with respect to the first down tube 6604. Therefore, to avoid redundancy, the central axis and the central plane will not be described repeatedly.

[0236] Fig.78 7800 and another example front brake caliper 7802. The example down tube assembly 7800 may be implemented as Fig.65108. The down tube assembly 7800 includes a first down tube 7804 (which forms a portion of the first or left leg 6504), a second down tube 7806 (which forms a portion of the second or right leg 6506) spaced apart from the first down tube 7804, and an arch 7808 between the first down tube 7804 and the second down tube 7806. The first down tube 7804 has a first wheel attachment portion 7807, and the second down tube 7806 has a second wheel attachment portion 7809.

[0237] In the example shown, the front brake caliper 7802 is coupled to the first down tube 7804. In this example, the front brake caliper 7802 is disposed on the inner side of the first down tube 7804 (e.g., coupled to the inner side of the first down tube 7804). In the example shown, the front brake caliper 7802 includes an outboard caliper portion 7810 and an inboard caliper portion 7812 on the inner side of the outboard caliper portion 7810. The outboard caliper portion 7810 is similar to the outboard caliper portion 5600 of the example rear brake caliper 5404 (without the axle mounting bracket 5504). Therefore, any structural and / or functional features disclosed in conjunction with the outboard caliper portion 5600 may be equally applicable to the outboard caliper portion 7810. The outboard caliper portion 7810 includes an outboard caliper body 7814 coupled to the outboard caliper body 7814 and an outboard brake pad (on the inner side of the outboard caliper portion 7812). Fig.79 and Fig.80 ). An outboard caliper body 7814 is coupled to the inner side of the first down tube 7804. In this example, the outboard brake pad is fixed (non-movable) relative to the outboard caliper body 7814.

[0238] The inboard caliper portion 7812 is substantially identical to the inboard caliper portion 5602 of the example rear brake caliper 5404 disclosed herein. Therefore, any structural and / or functional features disclosed in conjunction with the inboard caliper portion 5602 may be equally applicable to the inboard caliper portion 7812. The inboard caliper portion 7812 includes an inboard caliper body 7816 and an inboard brake pad (in Fig.79 and Fig.80 ). The inboard caliper body 7816 is coupled to the outboard caliper body 7814 (e.g., via one or more threaded fasteners). The inboard caliper body 7816 is disposed inboard of the outboard caliper body 7814. The inboard brake pad is movable relative to the inboard caliper body 7816, and therefore, relative to the outboard brake pad.

[0239] Fig.79 and Fig.807800 and an exploded perspective view of an example down tube assembly 7800 and an example front brake caliper 7802. In this example, the outboard caliper body 7814 is integral with the first down tube 7804. For example, the outboard caliper body 7814 and the first down tube 7804 can be constructed (e.g., molded, machined) as a single integral part or component (e.g., a unitary structure) or permanently coupled via welding or another coupling technique. This connection is optimal for dissipating heat from the front brake caliper 7802. Fig.79 and Fig.80 An outboard brake pad 7900 is shown that may be coupled to an outboard caliper body 7814 via one or more threaded fasteners 7902 (eg, bolts or screws). Fig.80 The inboard brake pad 8000 is shown on the inboard caliper body 7816. The inboard brake pad 8000 is movable relative to the inboard caliper body 7816. When the front brake caliper 7802 is assembled, the inboard caliper body 7816 is coupled to the outboard caliper body 7814 via the outboard threaded fasteners 7904 and the inboard threaded fasteners 7906. The inboard threaded fasteners 7906 and the outboard threaded fasteners 7904 are parallel to each other and oriented in the axial direction. In other examples, the inboard caliper body 7816 can be coupled to the outboard caliper body 7814 via more or fewer threaded fasteners and / or other coupling mechanisms (e.g., latches, pins). The position or positioning of the front brake caliper 7802 relative to the first down tube 7804 is consistent with the above. Fig.70 and Fig.71 The disclosed front brake caliper 6602 is substantially identical with respect to the first down tube 6604. Therefore, to avoid redundancy, the description of the center axis and the center plane is not repeated.

[0240] Example systems, devices, and articles for use with bicycles (and / or other vehicles) are disclosed herein. Examples and example combinations disclosed herein include the following:

[0241] Example 1 is a brake rotor for a bicycle. The brake rotor includes a bracket to be coupled to a hub of the bicycle and a brake track having a braking surface to be engaged by a brake pad. The brake track is disposed radially outward of the bracket. The brake track has a first thickness, and the bracket has a second thickness greater than the first thickness. The brake rotor has an axis of rotation defining a coordinate reference. The brake track is coupled to the bracket so that the brake track can move axially relative to the bracket while being constrained radially and circumferentially relative to the bracket.

[0242] Example 2 includes the brake rotor of Example 1, further comprising a locating portion coupled to the brake track. The locating portion is configured to dissipate heat from the brake track.

[0243] Example 3 includes the brake rotor of Example 2, wherein the bracket has an arm having an end, and wherein the locating portion has a recess in which the end is disposed. When the brake track moves axially relative to the bracket, the end will slide in the recess.

[0244] Example 4 includes the brake rotor of Example 3, wherein the end of the arm has a tab extending outwardly from a peripheral edge of the end.

[0245] Example 5 includes the brake rotor of Example 4, wherein the tab is used to limit axial movement of the brake track in a first axial direction, and the cooling fin is used to limit axial movement of the brake track in a second axial direction.

[0246] Example 6 includes the brake rotor of Example 4 or 5, wherein the tab and the cooling fin are located on a same side of the brake rotor.

[0247] Example 7 includes the brake rotor of any of Examples 3 to 6, wherein the arm is a first arm, the end is a first end, and the recess is a first recess, wherein: the bracket includes a second arm having a second end, and the cooling fin has a second recess. The second end is disposed in the second recess. When the brake track moves axially relative to the bracket, the second end will slide in the second recess.

[0248] Example 8 includes the brake rotor of any one of Examples 1 to 7, wherein the bracket has an arm, the arm has an end, the end has a protrusion extending in a circumferential direction, and the brake track has a recess, the recess has a shape corresponding to the end. The end is disposed in the recess. When the brake track moves axially relative to the bracket, the end will slide in the recess.

[0249] Example 9 includes the brake rotor of any of Examples 1 to 8, the brake rotor further comprising a pin extending through an opening formed in the brake rotor. The pin has a head disposed on a first side of the bracket. The brake rotor further comprises a clip coupled to the pin and disposed on a second side of the bracket. The head and the pin overlap a portion of the brake track in an axial direction.

[0250] Example 10 includes the brake rotor of Example 9, wherein the head is to limit axial movement of the brake track in a first axial direction, and the clip is to limit axial movement of the brake track in a second axial direction.

[0251] Example 11 includes the brake rotor of Example 9 or 10, wherein the opening is partially formed in the brake track and partially formed in the bracket.

[0252] Example 12 includes the brake rotor of any of Examples 9-11, the turner rotor further comprising a spring disposed between an outer peripheral edge of the bracket and an inner peripheral edge of the brake track, the spring for circumferentially biasing the brake track relative to the bracket.

[0253] Example 13 is a brake rotor for a bicycle. The brake rotor includes a bracket coupled to a hub of the bicycle. The bracket has an arm with an end. The end has a protrusion extending in a circumferential direction. The brake rotor also includes a brake track having a braking surface, which is engaged by a brake pad. The brake rotor has a rotation axis that defines a coordinate reference. The brake track is disposed radially outward of the bracket. The brake track has an inner peripheral edge with a notch. The end of the arm is disposed in the notch. The brake track is axially slidable on the end. The notch of the brake track is at least partially defined by a lip, which is disposed radially inward relative to the protrusion of the end to radially constrain the brake track relative to the bracket.

[0254] Example 14 includes the brake rotor of Example 13, wherein the inner peripheral edge of the brake track along the notch is slidably engaged with an outer peripheral edge of the end portion.

[0255] Example 15 includes the brake rotor of Example 13 or 14, further comprising a first stopper for limiting axial movement of the brake track in a first axial direction and a second stopper for limiting axial movement of the brake track in a second axial direction.

[0256] Example 16 includes the brake rotor of Example 15, wherein the first stop is on a first side of the brake rotor and the second stop is on a second side of the brake rotor opposite the first side of the brake rotor.

[0257] Example 17 includes the brake rotor of Example 15, wherein the first stopper and the second stopper are on a same side of the brake rotor.

[0258] Example 18 includes the brake rotor of Example 13 or 14, wherein the brake rotor does not include any stops for limiting axial movement of the brake track relative to the bracket.

[0259] Example 19 includes the brake rotor of any of Examples 13-18, wherein the carrier has a splined interface to engage a splined interface of the hub.

[0260] Example 20 is a hub assembly for a bicycle. The hub assembly includes a hub having a spoke attachment flange, a frame attachment section, and a first spline interface between the spoke attachment flange and the frame attachment section. The hub assembly also includes a brake rotor disposed on the hub, and the hub and the brake rotor are rotatable about a rotation axis defining a coordinate reference. The brake rotor includes a bracket and a brake track coupled to the bracket. The bracket has a second spline interface engaged with the first spline interface. The first spline interface has a greater thickness than the second spline interface. The brake rotor is axially movable on the second spline interface of the hub between the spoke attachment flange and the frame attachment section.

[0261] Example 21 is a brake caliper for a bicycle. The brake caliper includes an outer caliper portion to be disposed on the inner side of a frame of the bicycle. The outer caliper portion includes an outer caliper body and an outer brake pad fixed relative to the outer caliper body. The brake caliper also includes an inner caliper portion coupled to the outer caliper body. When the brake caliper is coupled to the bicycle, the inner caliper portion is disposed on the inner side of the outer caliper portion. The inner caliper portion includes an inner caliper body and an inner brake pad movable relative to the inner caliper body.

[0262] Example 22 includes the brake caliper of Example 21, wherein the outboard caliper portion includes an axle mounting bracket coupled to the outboard caliper body. The axle mounting bracket defines a first opening to receive an axle of a wheel of the bicycle. The axle mounting bracket forms a first contact point with the bicycle.

[0263] Example 23 includes the brake caliper of Example 22, further comprising a frame mounting bracket coupled to at least one of the outboard caliper body or the inboard caliper body. The frame mounting bracket defines a second opening to receive a post extending inboard from the frame of the bicycle. The frame mounting bracket forms a second contact point with the bicycle.

[0264] Example 24 includes the brake caliper of Example 23, wherein a central axis of the second opening is parallel to a central axis of the first opening.

[0265] Example 25 includes the brake caliper of Example 23 or 24, wherein the axle mounting bracket is angled from the first opening to the outboard caliper body such that when the brake caliper is mounted on the bicycle, the second contact point is inboard of the first contact point.

[0266] Example 26 includes the brake caliper of Example 25, wherein the axle mounting bracket is integral with the outboard caliper body.

[0267] Example 27 includes the brake caliper of any of Examples 21-26, wherein the outboard brake pad is coupled to the outboard caliper body via one or more threaded fasteners.

[0268] Example 28 includes the brake caliper of any of Examples 21-27, further comprising a hydraulic brake line coupled to the inboard caliper body.

[0269] Example 29 is a front fork for a bicycle. The front fork includes: a first tube having a first wheel attachment portion; a second tube spaced apart from the first tube, the second tube having a second wheel attachment portion; and a brake caliper disposed on an inner side of the first tube.

[0270] Example 30 includes the front fork of Example 29, wherein central axes of the first tube and the second tube lie in a central plane, and wherein the central plane intersects a brake caliper.

[0271] Example 31 includes the front fork of Example 30, wherein the center plane intersects a cylinder in the brake caliper.

[0272] Example 32 includes the front fork of Example 30 or 31, wherein the brake caliper has three cylinders, and wherein the center plane intersects a middle cylinder of the three cylinders.

[0273] Example 33 includes the front fork of any one of Examples 29 to 32, wherein the brake caliper comprises: an outer caliper body coupled to the inner side of the first tube; an inner caliper body coupled to the outer caliper body, the inner caliper body being disposed on the inner side of the outer caliper body; an outer brake pad; and an inner brake pad.

[0274] Example 34 includes the front fork of Example 33, wherein the outboard brake pad is fixed relative to the outboard caliper body and the inboard brake pad is movable relative to the inboard caliper body.

[0275] Example 35 includes the front fork of Example 33 or 34, wherein the outboard caliper body is integral with the first tube.

[0276] Example 36 includes the front fork of Example 15, wherein the first tube has a first mount and a second mount. The brake caliper is coupled to the first mount via a first threaded fastener and is coupled to the second mount via the second threaded fastener.

[0277] Example 37 includes the front fork of Example 36, wherein the first threaded fastener and the second threaded fastener are parallel to each other.

[0278] Example 38 includes the front fork of Example 36 or 37, wherein the second threaded fastener is oriented in a direction perpendicular to and offset from the first threaded fastener.

[0279] Example 39 is a disc brake for a bicycle. The disc brake includes a brake rotor, which is used to be coupled to the bicycle and can rotate about a rotation axis. The brake rotor includes a bracket for coupling to a hub of the bicycle and a brake track having a braking surface. The brake track is arranged radially outside the bracket. The brake track is coupled to the bracket so that the brake track can move axially relative to the bracket. The disc brake also includes a brake caliper, which is used to be coupled to the bicycle relative to the brake rotor. The brake caliper includes a body, a first brake pad fixed relative to the body, and a second brake pad movable relative to the body, so that when the brake caliper is actuated, the second brake pad engages the brake track and moves the brake track into engagement with the first brake pad.

[0280] Example 40 includes the disc brake of Example 39, wherein the first brake pad is an outboard brake pad and the second brake pad is an inboard brake pad.

[0281] Example 41 is a brake for a bicycle. The brake includes a brake caliper to be disposed on the inner side of a frame of the bicycle and an axle mounting bracket integral with the brake caliper. The axle mounting bracket defines an opening. When the brake is mounted on the bicycle, the axle of the bicycle extends through the opening. The brake also includes a sleeve disposed in the opening and extending from the outer side of the axle mounting bracket.

[0282] Example 42 includes the brake of Example 41, wherein an inner surface of the axle mounting bracket forming the opening and an outer surface of the sleeve form an interference fit.

[0283] Example 43 includes the brake of example 41 or 42, wherein the distal end of the sleeve is threaded. The brake further includes a nut that is threadedly coupled to the distal end of the sleeve when the brake is installed on the bicycle.

[0284] Example 44 includes the brake of any of Examples 41 to 43, wherein the opening is a first opening. The brake caliper includes a frame mounting bracket defining a second opening. The brake includes a post for coupling to a frame of the bicycle and extending inboard of the frame of the bicycle. When mounted on the bicycle, the post extends through the second opening.

[0285] Example 45 includes the brake of Example 24, further comprising a sleeve for being disposed about the post such that the sleeve is between the post and the frame mounting bracket.

[0286] The illustrations of the embodiments described herein are intended to provide a general understanding of the structures of the various embodiments. These illustrations are not intended to be used as a complete description of all elements and features of the devices and systems utilizing the structures or methods described herein. After reading this disclosure, many other embodiments may be apparent to those skilled in the art. Other embodiments may be utilized and derived from this disclosure so that structural and logical replacements and changes may be made without departing from the scope of this disclosure. In addition, the illustrations are representative only and may not be drawn to scale. Certain proportions within the illustrations may be exaggerated, while other proportions may be minimized. Therefore, this disclosure and the accompanying drawings should be considered illustrative rather than restrictive.

[0287] Although this specification contains many details, these details should not be interpreted as limitations on the scope of the present invention or the content that can be claimed, but as descriptions of features specific to a particular embodiment of the present invention. Certain features described in the context of a separate embodiment in this specification may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. In addition, although these features may be described above as working in certain combinations and even initially claimed as such, one or more features from the claimed combination may be removed from the combination in some cases, and the claimed combination may be directed to a sub-combination or a variation of the sub-combination.

[0288] Although specific embodiments have been shown and described herein, it should be understood that any subsequent arrangement designed to achieve the same or similar purpose may replace the specific embodiments shown. This disclosure is intended to cover any and all subsequent modifications or variations of the various embodiments. Combinations of the above embodiments and other embodiments not specifically described herein will be apparent to those skilled in the art after reading this specification.

[0289] The Abstract of the present disclosure is provided to comply with 37 CFR §1.72(b) and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoing Detailed Description, various features may be grouped together or described in a single embodiment for the purpose of simplifying the disclosure. This disclosure should not be interpreted as reflecting an intention that the claimed embodiments require more features than those expressly recited in each claim. On the contrary, as reflected in the following claims, the inventive subject matter may be directed to less than all features of any disclosed embodiment. Therefore, the following claims are incorporated into the Detailed Description, with each claim independently representing a separately claimed subject matter.

[0290] It is intended that the foregoing specific embodiments be considered illustrative rather than restrictive, and it should be understood that the following claims, including all equivalents, are intended to define the scope of the invention. The claims should not be interpreted as limited to the described sequence or elements unless otherwise stated. Therefore, all embodiments falling within the scope and spirit of the appended claims and their equivalents are required to be protected as the present invention.

Claims

1. A brake caliper for a bicycle, the brake caliper comprising: an outboard caliper portion to be disposed inside the frame of the bicycle, the outboard caliper portion comprising an outboard caliper body fixed relative to the frame of the bicycle and an outboard brake pad fixed relative to the outboard caliper body; and an inboard caliper portion coupled to the outboard caliper body, the inboard caliper portion being disposed inboard of the outboard caliper portion when the brake caliper is coupled to the bicycle, the inboard caliper portion including an inboard caliper body and an inboard brake pad movable relative to the inboard caliper body and thus movable relative to the outboard brake pad, When the brake caliper is actuated, the inner brake pad moves toward the outer brake pad, thereby moving the axially movable brake track of the brake rotor toward the outer brake pad and sandwiching the brake track between the outer brake pad and the inner brake pad.

2. The brake caliper according to claim 1, wherein: The outboard caliper portion includes an axle mounting bracket coupled to the outboard caliper body, the axle mounting bracket defining a first opening to receive an axle of a wheel of the bicycle, the axle mounting bracket forming a first contact point with the bicycle.

3. The brake caliper of claim 2 , further comprising a frame mounting bracket coupled to at least one of the outboard caliper body or the inboard caliper body, the frame mounting bracket defining a second opening to receive a post extending inwardly from the frame of the bicycle, the frame mounting bracket forming a second contact point with the bicycle.

4. The brake caliper according to claim 3, wherein: A central axis of the second opening is parallel to a central axis of the first opening.

5. The brake caliper according to claim 3, wherein: The axle mounting bracket is angled from the first opening toward the outboard caliper body such that the second contact point is inboard of the first contact point when the brake caliper is installed on the bicycle.

6. The brake caliper according to claim 5, wherein: The wheel axle mounting bracket is integral with the outboard caliper body.

7. The brake caliper according to claim 1, wherein: The outboard brake pad is coupled to the outboard caliper body via one or more threaded fasteners.

8. The brake caliper of claim 1 further comprising a hydraulic brake line coupled to the inboard caliper body.

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