Rear hub axle for a human-powered vehicle

Abstract

A rear hub spindle 12 for a human-powered vehicle is provided. The rear hub spindle 12 generally has a first shaft portion 30 and a second shaft portion 32. The first shaft portion 30 has a first hollow interior passage 30a defining a first interior dimension D1. The second shaft portion 32 has a second hollow interior passage 32a defining a second interior dimension D2. The first shaft portion 30 is connected to the second shaft portion 32 in an axial direction relative to the rear hub spindle 12. The first interior dimension D1 of the first hollow interior passage 30a is greater than the second interior dimension D2 of the second hollow interior passage 32a.

Description

Technical Field

[0001] The present invention generally relates to a rear hub through shaft for human-powered vehicles. Background Technology

[0002] Typically, the wheels of human-powered vehicles have hubs, multiple spokes, and annular rims. Generally, the hub has a hub axle and a hub body. The hub axle is non-rotatably mounted to the frame of the human-powered vehicle. The hub body is coaxially connected to the hub axle, so that the hub body is radially outward relative to the hub axle. Bearings are constructed and arranged to rotatably support the hub body so that the hub body can rotate freely about the hub axle. In some human-powered vehicles, such as bicycles, the hub is provided with a drive section for receiving driving force to turn the wheel in the driving direction. For example, the hub is provided with a sprocket support body rotatably mounted to the hub axle. The sprocket support body can be constructed to support one or more sprockets for receiving driving force. The sprocket support body is usually connected to the hub body via a one-way clutch, so that torque is transmitted unidirectionally from the sprocket support body to the hub body. This type of sprocket support body is sometimes called a freewheel. The use of a freewheel allows the human-powered vehicle to move freely forward without any rotation of the pedals (that is, during gliding). During gliding, the flywheel is considered to be in a freewheel state, in which the wheel can rotate freely while the sprocket remains stationary. Summary of the Invention

[0003] In general, this invention relates to various features of a rear hub through-shaft for human-powered vehicles. As used herein, the term "human-powered vehicle" refers to a vehicle that can be driven at least by human power, but excludes vehicles that use only non-human power. Specifically, vehicles that use only an internal combustion engine as their power source are not included in the scope of human-powered vehicles. Human-powered vehicles are generally considered to be small, light vehicles that sometimes do not require a license to drive on public roads. The number of wheels on a human-powered vehicle is not limited. Human-powered vehicles include, for example, unicycles and vehicles with three or more wheels. Human-powered vehicles include, for example, various types of bicycles such as mountain bikes, road bikes, city bikes, freight bikes, recumbent bikes, and electric-assist bicycles (E-bikes).

[0004] In view of the known technical situation, and according to a first aspect of the present invention, a rear hub shaft for a human-powered vehicle is provided. The rear hub shaft generally includes a first shaft portion and a second shaft portion. The first shaft portion has a first hollow internal channel defining a first internal dimension. The second shaft portion has a second hollow internal channel defining a second internal dimension. The first shaft portion is connected to the second shaft portion in an axial direction relative to the rear hub shaft. The first internal dimension of the first hollow internal channel is larger than the second internal dimension of the second hollow internal channel.

[0005] By utilizing the rear hub through-shaft according to the first aspect, a larger component can be accommodated in the first hollow internal channel, while a smaller component can be accommodated in the second hollow internal channel.

[0006] According to a second aspect of the invention, the rear hub shaft according to the first aspect is constructed such that a first shaft portion has a first shaft length, a second shaft portion has a second shaft length, and the first shaft length is greater than the second shaft length. Using the rear hub shaft according to the second aspect, the internal region of the first shaft portion can accommodate a longer component.

[0007] According to a third aspect of the invention, the rear hub through-shaft according to the first or second aspect is configured such that the first shaft portion has a first outer surface defining a first outer dimension, and the second shaft portion has a second outer surface defining a second outer dimension, wherein the first outer dimension is larger than the second outer dimension. Using the rear hub through-shaft according to the third aspect, the first shaft portion can be configured to be disposed inside the hub body, and the second shaft portion can be configured to be disposed inside a sprocket support body that is smaller than the hub body in the radial direction relative to the axial direction.

[0008] According to a fourth aspect of the invention, the rear hub shaft according to any one of the first to third aspects is configured such that a first hollow internal channel in the first shaft portion is configured to accommodate one of at least one battery and at least one electronic device, and a second hollow internal channel in the second shaft portion is configured to accommodate the other of the at least one battery and the at least one electronic device. Using the rear hub shaft according to the fourth aspect, one of the at least one battery and at least one electronic device can be disposed in the first hollow internal channel of the first shaft portion, and the other of the at least one battery and the at least one electronic device can be disposed in the second hollow internal channel.

[0009] According to a fifth aspect of the invention, the rear hub through-shaft of the fourth aspect is configured such that at least one electronic device includes at least one of a sensor and a wireless communication unit. Using the rear hub through-shaft according to the fifth aspect, the state of the hub can be sensed, and that state can be transmitted to a remote wireless communication unit without the use of wires.

[0010] According to a sixth aspect of the invention, the rear hub shaft according to any one of the first to fifth aspects further includes an end cap removably attached to the open end of the first shaft portion on the opposite side of the second shaft portion. Using the rear hub shaft according to the sixth aspect, easy access can be made to the inner regions of the first hollow internal channel and the inner regions of the second hollow internal channel.

[0011] According to a seventh aspect of the invention, the rear hub through-shaft, according to any one of the first to sixth aspects, further includes a frame attachment structure attached to the first axle portion on the opposite side of the second axle portion. Using the rear hub through-shaft according to the seventh aspect, the first axle portion of the rear hub through-shaft can be attached to the frame using the frame attachment structure.

[0012] According to an eighth aspect of the invention, the rear hub through-shaft configured according to the seventh aspect is constructed such that the frame attachment structure includes a frame joint and an attachment bolt threaded to the frame joint. Using the rear hub through-shaft according to the eighth aspect, the rear hub through-shaft can be easily attached to and released from the frame by tightening and loosening the attachment bolt relative to the frame joint.

[0013] According to a ninth aspect of the invention, the rear hub through-shaft according to any one of the first to eighth aspects is constructed such that the second shaft portion has external threads for threaded engagement with a fixing nut, a fork, or a frame. Using the rear hub through-shaft according to the ninth aspect, the second shaft portion of the rear hub through-shaft can be attached to the frame by threaded engagement with one of the fixing nut, fork, or frame.

[0014] According to a tenth aspect of the invention, the rear hub includes a rear hub through shaft according to any one of the first to ninth aspects, a hub body rotatably disposed about a first axis portion, and a sprocket support body rotatably disposed about a second axis portion.

[0015] According to the tenth aspect of the rear hub, the rear hub through shaft can be used as part of the rear hub body, such that the hub body is rotatably arranged around the first shaft portion, while the sprocket support body is rotatably arranged around the second shaft portion.

[0016] Furthermore, those skilled in the art will understand other objects, features, aspects, and advantages of the disclosed rear hub through-shaft from the following detailed description of preferred embodiments of the rear hub through-shaft disclosed in conjunction with the accompanying drawings. Attached Figure Description

[0017] Referring now to the accompanying drawings that form part of this original invention, in which...

[0018] Figure 1 This is a rear elevation view of the rear of a human-powered vehicle (i.e., a bicycle) equipped with a rear hub having a rear hub through-shaft, according to the first embodiment.

[0019] Figure 2 yes Figure 1 The longitudinal sectional view of the rear hub shown;

[0020] Figure 3 yes Figure 1 and Figure 2 The longitudinal sectional view of the rear hub shaft shown;

[0021] Figure 4 yes Figure 1 and Figure 2 The diagram shows an exploded longitudinal sectional view of the rear hub body; and

[0022] Figure 5 yes Figure 2 The enlarged cross-sectional view of the hub shown illustrates a torque transmission mechanism with a first ratchet member and a second ratchet member in the engaged position for transmitting driving force from the sprocket support body to the hub body.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10: Back Flower Drum

[0025] 12: Rear hub through shaft

[0026] 14: Flower drum body

[0027] 14A: First Body Part

[0028] 14A1: First spoke attachment flange

[0029] 14B: Second Body Part

[0030] 14B1: Second spoke attachment flange

[0031] 14C: Third Body Part

[0032] 14C1: Brake rotor attachment structure

[0033] 16: Sprocket supports the main body

[0034] 18: External support shaft

[0035] 20: First hub body bearing

[0036] 20a: First Inner Ring

[0037] 20b: First outer ring

[0038] 20c: First roller element

[0039] 22: Second hub body bearing

[0040] 22a: Second inner circle

[0041] 22b: Second outer ring

[0042] 22c: Second roller element

[0043] 24: First sprocket support bearing

[0044] 24a: First inner circle

[0045] 24b: First outer ring

[0046] 24c: First roller element

[0047] 26: Second sprocket support bearing

[0048] 26a: Second inner circle

[0049] 26b: Second outer ring

[0050] 26c: Second roller element

[0051] 28: Torque transmission mechanism

[0052] 30: First Axis Section

[0053] 30a: First hollow internal passage

[0054] 30b: First outer surface

[0055] 30c: Open end

[0056] 32: Second Axis Section

[0057] 32a: Second hollow internal passage

[0058] 32b: Second outer surface

[0059] 32c: External thread

[0060] 34: End cap

[0061] 36: Frame attachment structure

[0062] 36a: Frame joint

[0063] 36b: Attachment bolt

[0064] 36c: Rod

[0065] 36d: Pin

[0066] 36e: (Frame joint) cover

[0067] 38: Fixing nut

[0068] 38a: Set screw

[0069] 40: Battery

[0070] 42: Electronic Components

[0071] 44: Sensors

[0072] 46: Wireless communication unit

[0073] 46a: Antenna

[0074] 48: Electronic controller

[0075] 50: Circuit board

[0076] 52: The part being detected

[0077] 56: Sealing components

[0078] 58: Sealing components

[0079] 60: First end piece

[0080] 62: Second end piece

[0081] 70: First ratchet component

[0082] 70a: First ratchet tooth

[0083] 72: Second ratchet component

[0084] 72a: Second ratchet tooth

[0085] 74: Bias element

[0086] A1: Rotation center axis

[0087] CS: Rear sprocket

[0088] D1: First internal dimension

[0089] D2: Second internal dimension

[0090] L1: Length of the first axis

[0091] L2: Length of the second axis

[0092] VB: Vehicle body

[0093] X1: First external dimension

[0094] X2: Second external dimension Detailed Implementation

[0095] Preferred embodiments will now be explained with reference to the accompanying drawings. From this invention, those skilled in the art of human-powered vehicles (e.g., bicycles) will understand that the following description of the embodiments is clearly for illustrative purposes only and not for limiting the invention to the extent defined by the appended claims and their equivalents.

[0096] First refer to Figure 1According to the illustrated embodiment, the rear of the human-powered vehicle V (i.e., a bicycle) is equipped with a rear hub 10. Here, in the illustrated embodiment, the rear hub 10 is a bicycle rear hub. The rear hub 10 can be used with other human-powered vehicles as needed and / or desired. The rear hub 10 is configured to be removably mounted to the vehicle body VB, as described below. The rear hub 10 is configured to support multiple rear sprockets CS. Alternatively, the rear hub 10 can be configured to support a single sprocket as needed and / or desired.

[0097] like Figure 2 As shown, the rear hub 10 generally includes a rear hub shaft 12, a hub body 14, and a sprocket support body 16. The rear hub 10 has a rotational center axis A1. The rear hub shaft 12 is configured to be non-rotatably attached to the vehicle body VB. Thus, the rear hub shaft 12 is provided to the human-powered vehicle V. Here, in the illustrated embodiment, the rear hub 10 further includes an outer support shaft 18, which is a tubular body inserted between the rear hub shaft 12 and the hub body 14. The outer support shaft 18 is also located between the rear hub shaft 12 and the sprocket support body 16. The rear hub shaft 12 is removably disposed inside the outer support shaft 18. The rear hub shaft 12 and the outer support shaft 18 are configured to be non-rotatably connected together. Optionally, the outer support shaft 18 and the rear hub shaft 12 can be combined as a single component.

[0098] The hub body 14 is rotatably mounted around the rear hub shaft 12 to rotate around the rotation center axis A1. Specifically, the hub body 14 is rotatably supported on the outer support shaft 18 by a first hub body bearing 20 and a second hub body bearing 22. The first hub body bearing 20 rotatably supports one end of the hub body 14 relative to the rotation center axis A1. The second hub body bearing 22 rotatably supports the other end of the hub body 14 relative to the rotation center axis A1. The first hub body bearing 20 includes a first inner ring 20a, a first outer ring 20b, and a plurality of first roller elements 20c. The first roller elements 20c are disposed between the first inner ring 20a and the first outer ring 20b. The second hub body bearing 22 includes a second inner ring 22a, a second outer ring 22b, and a plurality of second roller elements 22c. The second roller elements 22c are disposed between the second inner ring 22a and the second outer ring 22b. The first hub body bearing 20 and the second hub body bearing 22 are angular contact ball bearings.

[0099] Angular contact ball bearings have inner and outer annular raceways that are displaced relative to each other in the direction of the bearing axis. In other words, angular contact bearings are designed to accommodate combined loads, that is, simultaneous radial and axial loads. Furthermore, angular contact roller bearings (i.e., tapered roller bearings) can be used instead of angular contact ball bearings for the first hub body bearing 20 and the second hub body bearing 22. Angular contact roller bearings include cylindrical roller bearings and needle roller bearings. Alternatively, the first hub body bearing 20 and the second hub body bearing 22 can be radial ball bearings, which support forces perpendicular to the axis. Furthermore, radial roller bearings can be used instead of angular contact roller bearings. Radial roller bearings include cylindrical roller bearings and needle roller bearings.

[0100] The sprocket support body 16 is a rigid member made of a suitable material such as metal. The sprocket support body 16 is rotatably disposed about the rear hub shaft 12 to rotate about the rotation center axis A1. Specifically, the sprocket support body 16 is rotatably supported about the rear hub shaft 12 by a first sprocket support bearing 24 and a second sprocket support bearing 26. The sprocket support body 16 is configured to non-rotatably support the rear sprocket CS. Here, the sprocket support body 16 has a plurality of external splines configured to engage the rear sprocket CS. Thus, the rear sprocket CS is non-rotatably connected to the sprocket support body 16. However, the sprocket support body 16 is not limited to the illustrated embodiment. Alternatively, one or more rear sprockets CS may be integrally formed with the sprocket support body 16. In any case, the sprocket support body 16 and the rear sprocket CS are connected together to rotate together in both the driving rotation direction and the non-driving rotation direction.

[0101] The first sprocket support bearing 24 and the second sprocket support bearing 26 are axially spaced apart along the rear hub shaft 12. The first sprocket support bearing 24 rotatably supports a first end of the sprocket support body 16. The second sprocket support bearing 26 rotatably supports a second end of the sprocket support body 16. The first sprocket support bearing 24 includes a first inner ring 24a, a first outer ring 24b, and a plurality of first roller elements 24c. The first roller elements 24c are disposed between the first inner ring 24a and the first outer ring 24b. The second sprocket support bearing 26 includes a second inner ring 26a, a second outer ring 26b, and a plurality of second roller elements 26c. The second roller elements 26c are disposed between the second inner ring 26a and the second outer ring 26b. Here, the first sprocket support bearing 24 and the second sprocket support bearing 26 are radial ball bearings.

[0102] Radial ball bearings support forces perpendicular to the axis. Alternatively, radial roller bearings can be used instead of radial ball bearings for one or both of the first sprocket support bearing 24 and the second sprocket support bearing 26. Radial roller bearings include cylindrical roller bearings and needle roller bearings. Alternatively, angular contact ball bearings can be used instead of radial ball bearings for one or both of the first sprocket support bearing 24 and the second sprocket support bearing 26.

[0103] The sprocket support body 16 is configured to transmit driving force to the hub body 14 when rotating about the rotation center axis A1 in the driving rotation direction. As described below, the sprocket support body 16 does not transmit driving force to the hub body 14 when rotating about the rotation center axis A1 in the non-driving rotation direction. The non-driving rotation direction is opposite to the driving rotation direction relative to the rotation center axis A1. The rotation center axis of the sprocket support body 16 is concentrically arranged with the rotation center axis A1 of the rear hub 10.

[0104] In the illustrated embodiment, the rear hub 10 further includes a torque transmission mechanism 28 disposed between the hub body 14 and the sprocket support body 16 to transmit rotational force from the sprocket support body 16 to the hub body 14. The torque transmission mechanism 28 forms a one-way clutch, such that torque is transmitted from the sprocket support body 16 to the hub body 14 in one direction. Thus, during pedaling in the drive rotation direction, the rotational force applied from the rear sprocket CS to the sprocket support body 16 is transmitted to the hub body 14. During gliding, the sprocket support body 16 can be stationary, while the hub body 14 can rotate in the drive rotation direction.

[0105] refer to Figure 3 The rear hub shaft 12 will now be described in more detail. The rear hub shaft 12 is a rigid member made of a suitable material such as metal. The rear hub shaft 12 is a tubular member configured to receive various electrical components described below. Generally, the rear hub shaft 12 includes a first shaft portion 30 and a second shaft portion 32. The first shaft portion 30 is connected to the second shaft portion 32 in an axial direction relative to the rear hub shaft 12. Here, the first shaft portion 30 and the second shaft portion 32 are illustrated as a single component. However, the first shaft portion 30 and the second shaft portion 32 can be made by joining several components together. The hub body 14 is rotatably disposed about the first shaft portion 30. The sprocket support body 16 is rotatably disposed about the second shaft portion 32.

[0106] In the illustrated embodiment, the rear hub shaft 12 is a tubular member with a stepped shape. The first shaft portion 30 has a first hollow internal channel 30a defining a first internal dimension D1. Furthermore, the first shaft portion 30 has a first external surface 30b defining a first external dimension X1. The second shaft portion 32 has a second hollow internal channel 32a defining a second internal dimension D2. Furthermore, the second shaft portion 32 has a second external surface 32b defining a second external dimension X2. The first hollow internal channel 30a and the second hollow internal channel 32a are connected and form a single continuous channel. The first internal dimension D1 of the first hollow internal channel 30a is larger than the second internal dimension D2 of the second hollow internal channel 32a. Thus, larger electrical components can be located in the first hollow internal channel 30a, while smaller electrical components can be located in the second hollow internal channel 32a. The first external dimension X1 is larger than the second external dimension X2.

[0107] In the illustrated embodiment, the first shaft portion 30 has a first shaft length L1. The second shaft portion 32 has a second shaft length L2. The first shaft length L1 is greater than the second shaft length L2. Therefore, here, the internal region of the first hollow internal channel 30a is greater than the internal region of the second hollow internal channel 32a. In the illustrated embodiment, the second shaft portion 32 extends slightly inside the hub body 14. However, the second shaft length L2 of the second shaft portion 32 can be longer, allowing the second shaft portion 32 to extend further within the hub body 14 as needed and / or desired.

[0108] like Figure 3 As shown, the rear hub shaft 12 further includes an end cap 34, which is removably attached to the open end 30c of the first shaft portion 30 on the opposite side of the second shaft portion 32. Here, the end cap 34 is threaded into the open end 30c of the first shaft portion 30. This allows easy access to the interior regions of the first hollow internal channel 30a and the second hollow internal channel 32a. However, if needed and / or desired, the end cap 34 can be permanently attached to the open end 30c of the first shaft portion 30, or removably attached using other attachment structures.

[0109] The rear hub through-shaft 12 further includes a frame attachment structure 36 attached to the first axle portion 30 on the opposite side of the second axle portion 32. On the other hand, the second axle portion 32 has external threads 32c for threaded engagement with a retaining nut, fork, or frame. Here, a retaining nut 38 is threaded onto the external threads 32c of the second axle portion 32 to secure the second axle portion 32 to the frame VB (e.g., the bicycle frame in the illustrated embodiment). A set screw 38A is threaded into a threaded hole in the frame VB to engage with the retaining nut 38, such that the retaining nut 38 does not rotate relative to the frame VB. Alternatively, the external threads 32c of the second axle portion 32 can be directly threaded into a female threaded hole in the fork or frame.

[0110] In the illustrated embodiment, the frame attachment structure 36 is attached to the first axle portion 30 via an end cap 34 attached to the open end 30c of the first axle portion 30. Specifically, the frame attachment structure 36 includes a frame engagement portion 36a and an attachment bolt 36b. Furthermore, in the illustrated embodiment, the frame attachment structure 36 includes a rod 36c, a pin 36d, and a cap 36e. Here, the frame engagement portion 36a is threadedly attached to the end cap 34. Alternatively, the end cap 34 and the frame engagement portion 36a can be a single piece or permanently joined together. The attachment bolt 36b is threadedly engaged with the frame engagement portion 36a. This threaded connection between the attachment bolt 36b and the frame engagement portion 36a allows the user to rotate the attachment bolt 36b to adjust the axial position of the frame engagement cap 36e relative to the frame VB (fork or frame) during the installation of the rear hub 10 to the vehicle body VB (fork or frame). Here, rod 36c is connected to attachment bolt 36b by pin 36d.

[0111] In the illustrated embodiment, the first hollow internal channel 30a of the first shaft portion 30 is configured to accommodate one of at least one battery 40 and at least one electronic device 42. The second hollow internal channel 32a of the second shaft portion 32 is configured to accommodate the other of at least one battery 40 and at least one electronic device 42. Here, in the illustrated embodiment, the first hollow internal channel 30a of the first shaft portion 30 is configured to accommodate multiple batteries 40. The second hollow internal channel 32a of the second shaft portion 32 is configured to accommodate at least one electronic device 42.

[0112] Here, at least one electronic device 42 includes at least one of a sensor 44 and a wireless communication unit 46. Furthermore, at least one electronic device includes an electronic controller 48. The sensor 44, the wireless communication unit 46, and the electronic controller 48 are disposed on a circuit board 50. The circuit board 50 is electrically connected to a battery 40 to receive power. Therefore, the battery 40 supplies power to the sensor 44, the wireless communication unit 46, and the electronic controller 48.

[0113] In the illustrated embodiment, sensor 44 is a rotation detection sensor configured to detect rotation of the sprocket support body 16. However, sensor 44 is not limited to a rotation detection sensor. Sensor 44 may include at least one of an accelerometer, a rotation detection sensor, and a gyroscope sensor. As used herein, the term "sensor" refers to a hardware device or instrument designed to detect the presence or absence of a particular event, object, substance, or change in its environment and to respond by emitting a signal. The term "sensor" as used herein does not include a person.

[0114] When sensor 44 is a rotation detection sensor, sensor 44 is configured to detect the detected part 52 fixed to the sprocket support body 16, such as... Figure 2 As shown. Here, sensor 44 includes a magnetic sensor, and the detected part 52 includes at least one magnet. The detected part 52 includes multiple magnets formed as annular members with alternating S-pole and N-pole segments. The detected part 52 is fixed to the inner wall of the sprocket support body 16. In this way, sensor 44 can detect the rotational speed and direction of rotation of the sprocket support body 16. Electronic controller 48 is configured to receive the detection signal from sensor 44 and output it to wireless communication unit 46. Figure 2 As shown, the outer support shaft 18 and the second shaft portion 32 include openings that allow the sensor 44 to detect the probed portion 52. These openings in the outer support shaft 18 and the second shaft portion 32 can be filled with signal-permeable material as needed and / or desired.

[0115] The wireless communication unit 46 is preferably a wireless transmitter configured to transmit the detection results of the sensor 44 to a remote wireless communication unit (wireless receiver) of another component. As used herein, the term "wireless communication unit" refers to hardware including receivers, transmitters, transceivers, and transceivers, and considers any independent or combined device capable of transmitting and / or receiving wireless communication signals. The wireless communication signals can be radio frequency (RF) signals, ultra-wideband communication signals, radio frequency identification (RFID), ANT+ communication, etc. Communication, or any other type of short-range wireless communication as understood in the field of human-powered vehicles. The term "wireless communication unit" as used herein does not include a person. As described above, the wireless communication unit 46 can be a unidirectional wireless communication device, such as a transmitter. Here, the wireless communication unit 46 includes an antenna 46a that extends toward an opening in the end of the wireless communication unit 46 to improve reception.

[0116] The electronic controller 48 includes a central processing unit (CPU) or a microprocessor unit (MPU). Preferably, the electronic controller 48 includes one or more processors and one or more memory devices. The memory devices store programs used by the electronic controller 48. Each memory device can be any computer storage device or any computer-readable medium, with the exception of transient propagation signals. For example, the memory devices can be non-volatile memory and volatile memory, and can include ROM (read-only memory) devices, RAM (random access memory) devices, hard disks, flash drives, etc.

[0117] like Figure 2 As shown, the rear hub shaft 12 is provided with sealing members 56 and 58 for sealing the ends of the rear hub shaft 12. Specifically, the sealing member 56 is disposed between the rear hub shaft 12 and the antenna 46a to prevent contaminants from entering the second shaft portion 32 of the rear hub shaft 12. The other end of the rear hub shaft 12 is provided with the sealing member 58 to prevent contaminants from entering the first shaft portion 30 of the rear hub shaft 12.

[0118] In addition, such as Figure 2 As shown, the rear hub 10 further includes a first end member 60 that frictionally engages with a first end of the outer support shaft 18 and a second end member 62 that frictionally engages with a second end of the outer support shaft 18. The first end member 60 and the second end member 62 are configured to contact the vehicle body VB when the rear hub 10 is mounted to the vehicle body VB.

[0119] Now for reference Figure 4 In the illustrated embodiment, the hub body 14 includes a first body portion 14A, a second body portion 14B, and a third body portion 14C. Here, the second body portion 14B is threaded to one end of the first body portion 14A, and the third body portion 14C is threaded to the other end of the first body portion 14A. Although the hub body 14 is illustrated as consisting of three parts, it is clear that the hub body 14 can be configured as a single piece (a single component). Alternatively, the hub body 14 can be composed of two parts, or it can be composed of more than three parts. In any case, the hub body 14 is made of a rigid material such as a metallic material or a non-metallic fiber-reinforced material. Here, the hub body 14 includes a first spoke attachment flange 14A1 and a second spoke attachment flange 14B1. The first spoke attachment flange 14A1 is disposed to the first body portion 14A. The second spoke attachment flange 14B1 is disposed to the second body portion 14B. The third body portion 14C has a brake rotor attachment structure 14C1.

[0120] Now for reference Figure 5The torque transmission mechanism 28 includes a first ratchet member 70 and a second ratchet member 72. The first ratchet member 70 is mounted to the hub body 14 for rotation therewith. The second ratchet member 72 is mounted to the sprocket support body 16 for rotation therewith. At least one of the first ratchet member 70 and the second ratchet member 72 is movable relative to the rear hub shaft 12 in an axial direction parallel to the rotation center axis A1. In this embodiment, the second ratchet member 72 is movable relative to the rear hub shaft 12 and the sprocket support body 16 in the axial direction. The first ratchet member 70 is immovable relative to the rear hub shaft 12 and the hub shell 14 in the axial direction. A biasing element 74 is disposed between the hub body 14 and the second ratchet member 72 to bias the second ratchet member 72 into torque transmission engagement with the first ratchet member 70. The first ratchet member 70 includes a plurality of first ratchet teeth 70a facing the axial direction. The second ratchet member 72 includes a plurality of second ratchet teeth 72a facing the axial direction. When the sprocket support body 16 rotates in the forward drive direction, the first ratchet tooth 70a engages with the second ratchet tooth 72a to transmit rotational force from the sprocket support body 16 to the hub body 14. On the other hand, when the sprocket support body 16 rotates in the non-drive direction or stops, the first ratchet tooth 70a and the second ratchet tooth 72a rotate relative to each other.

[0121] In understanding the scope of this invention, the term "comprising" and its derivatives are intended to be open-ended terms, indicating the presence of said features, elements, components, groups, integers, and / or steps, but not excluding the presence of other unstated features, elements, components, groups, integers, and / or steps. The foregoing definition is also suitable for words with similar meanings, such as the terms "comprising," "having," and their derivatives. Furthermore, unless otherwise stated, the terms "part," "section," "section," "component," or "element" used in the singular may have a dual meaning of a single part or multiple parts.

[0122] As used herein, the following directional terms, “frame-facing side,” “non-frame-facing side,” “forward,” “backward,” “front,” “rear,” “upward,” “downward,” “above,” “below,” “facing upward,” “top,” “bottom,” “side,” “longitudinal,” “horizontal,” “vertical,” and “lateral,” as well as any other similar directional terms, refer to the orientation of a human-powered vehicle (e.g., a bicycle) in an upright, riding position with a rear hub axle. Accordingly, these directional terms used to describe the rear hub axle should be understood relative to a human-powered vehicle (e.g., a bicycle) in an upright riding position on a horizontal surface with a rear hub axle. The terms “left” and “right” are used to indicate “right” when viewed from the rear of the human-powered vehicle (e.g., a bicycle) and “left” when viewed from the left of the human-powered vehicle (e.g., a bicycle).

[0123] The phrase "at least one" as used in this invention refers to "one or more" of the desired selections. For example, if the number of selections is two, the phrase "at least one" as used in this invention means "only one selection" or "two of the two selections." As another example, if the number of selections is equal to or greater than three, the phrase "at least one" as used in this invention means "only one selection" or "any combination of equal to or greater than two selections." Furthermore, the term "and / or" as used in this invention means "one or both."

[0124] Furthermore, it should be understood that while the terms "first" and "second" may be used herein to describe various components, these components should not be limited by these terms. These terms are used only to distinguish one component from another. Thus, for example, without departing from the teachings of the invention, the first component discussed above may be referred to as the second component, and vice versa.

[0125] The term "attach to" or "attach" as used herein includes the following configurations: directly fixing one element to another by adhesion; indirectly fixing one element to another by adhesion to an intermediate part which in turn is adhered to another element; and a configuration where one element and another are integral, i.e., one element is essentially part of the other. This definition is also suitable for words with similar meanings, such as "joint," "connect," "link," "install," "adhere," "fix," and their derivatives. Finally, the degree terms such as "substantially," "approximately," and "generally" used herein imply modifications to the amount of deviation in the terminology so that the final result does not change significantly.

[0126] Although only selected embodiments have been chosen to illustrate the invention, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the invention without departing from the scope defined in the appended claims. For example, unless specifically stated otherwise, the size, shape, position, or orientation of various components may be changed as needed and / or desired, provided that such changes do not materially affect their intended function. Unless specifically stated otherwise, components shown as directly connected or in contact with each other may have an intermediate structure between them, provided that such changes do not materially affect their intended function. The function of one element may be performed by two elements, and vice versa, unless specifically stated otherwise. The structure and function of one embodiment may be adopted in another embodiment. It is not necessary for all advantages to appear simultaneously in a particular embodiment. Each feature unique to the prior art, whether alone or in combination with other features, should also be considered a separate description of the applicant's further invention, including the structural and / or functional concepts embodied in these features. Therefore, the above description of embodiments provided according to the invention is for illustrative purposes only and is not intended to limit the invention as defined by the appended claims and their equivalents.

Claims

1. A rear hub through-shaft for a human-powered vehicle, the rear hub through-shaft comprising: A first shaft portion having a first hollow internal channel defining a first internal dimension, the first shaft portion being configured for a hub body to be rotatably disposed around the first shaft portion; as well as The second shaft portion has a second hollow internal channel defining a second internal dimension, and the second shaft portion is used for a sprocket support body to be rotatably disposed around the second shaft portion, wherein... The first shaft portion is axially connected to the second shaft portion relative to the rear hub through shaft. The first internal dimension of the first hollow internal channel is larger than the second internal dimension of the second hollow internal channel. The first hollow internal channel of the first shaft portion is configured to accommodate at least one battery, and The second hollow internal channel of the second shaft portion is configured to accommodate at least one electronic device, said at least one electronic device including a sensor. The first shaft portion has a first outer surface defining a first outer dimension, the second shaft portion has a second outer surface defining a second outer dimension, and the first outer dimension is larger than the second outer dimension. The second shaft portion has external threads for threaded engagement with a fixing nut, fork, or frame. The second outer surface is disposed between the first outer surface and the external thread. The axial length of the second outer surface is longer than the axial length of the external thread.

2. The rear hub through shaft according to claim 1, wherein... The first shaft portion has a first shaft length, the second shaft portion has a second shaft length, and the first shaft length is greater than the second shaft length.

3. The rear hub through shaft according to claim 1 or 2, wherein The at least one electronic device also includes a wireless communication unit.

4. The rear hub through shaft according to claim 1 or 2, further comprising: An end cap is removably attached to the open end of the first shaft portion on the opposite side of the second shaft portion.

5. The rear hub through shaft according to claim 1 or 2, further comprising: The frame attachment structure is attached to the first axle portion on the opposite side of the second axle portion.

6. The rear hub through shaft according to claim 5, wherein... The frame attachment structure includes a frame joint and attachment bolts threaded to the frame joint.

7. The rear hub through shaft according to claim 3, further comprising: An end cap is removably attached to the open end of the first shaft portion on the opposite side of the second shaft portion.

8. The rear hub through shaft according to claim 3, further comprising: The frame attachment structure is attached to the first axle portion on the opposite side of the second axle portion.

9. The rear hub through shaft according to claim 8, wherein... The frame attachment structure includes a frame joint and attachment bolts threaded to the frame joint.

10. The rear hub through shaft according to claim 4, further comprising: The frame attachment structure is attached to the first axle portion on the opposite side of the second axle portion.

11. The rear hub through shaft according to claim 10, wherein... The frame attachment structure includes a frame joint and attachment bolts threaded to the frame joint.

12. A rear drum, comprising: The rear hub through shaft according to any one of claims 1 to 11; The hub body is rotatably arranged around the first axis portion; as well as The sprocket support body is rotatably arranged around the second axis portion.

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