Height-adjustable seat post for bicycle

Abstract

The invention relates to a height adjustable seatpost for a bicycle. An example apparatus includes a height adjustable seating post including a valve and an internal actuator to operate the valve to enable the seating post to expand or contract. The device also includes a control device including a housing and a microcontroller in the housing. The control device is arranged outside the seat post. The microcontroller is used to control power to the internal actuators based on wireless signals from seatpost actuators on the bicycle. The apparatus also includes a cable for electrically coupling the seating post and the control device.

Description

Technical Field

[0001] The present disclosure relates generally to bicycle components and, more particularly, to a height adjustable seat post for a bicycle. Background Art

[0002] Bicycles are known to have a seat or saddle to support the rider in a seated position. The seat is typically connected to the bicycle frame by a seat post. On most bicycles, the seat post can be manually adjusted to raise or lower the height of the seat to accommodate riders of different heights. The height can also be adjusted to accommodate different riding conditions. Typically, the seat post is mechanically clamped to the seat tube of the bicycle frame. When the clamp is released, the seat post can slide up and down relative to the seat tube of the bicycle frame to adjust the height of the seat. On some recent high-end bicycles, the seat post can be adjusted in height during riding of the bicycle by using some type of hydraulic assist mechanism. For example, a manually actuated hydraulic height adjustable or dropper seat post can use a hydraulic pressure differential within the seat post and requires manual operation to adjust the seat post height. Some products can use ANT+ wireless communication technology to allow the rider to adjust the seat post wirelessly. Summary of the invention

[0003] An exemplary apparatus for a bicycle includes a height adjustable seat post including a valve and an internal actuator for operating the valve to enable the height adjustable seat post to expand or contract. The apparatus also includes a control device including a housing and a microcontroller in the housing. The control device is disposed on the exterior of the height adjustable seat post. The microcontroller is used to control power to the internal actuator based on a wireless signal from a seat post actuator on the bicycle. The apparatus also includes a cable for electrically coupling the height adjustable seat post and the control device.

[0004] An exemplary apparatus for a bicycle includes a height adjustable seat post including a valve and an internal actuator for operating the valve to enable the seat post to expand or contract. The apparatus also includes a seat post actuator for coupling to a handlebar of the bicycle. The seat post actuator includes a control device to control power to the seat post to activate the internal actuator. The apparatus also includes a wiring harness including: a first connector for connecting to a mating connector on the height adjustable seat post; a second connector for connecting to a power connector on the bicycle to receive power from a battery on the bicycle; and a cable located between the first connector, the second connector, and the seat post actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1is a side view of an example bicycle that may employ any of the example height adjustable seatposts and / or connector systems disclosed herein.

[0006] Figure 2 is a side view of an exemplary height adjustable seatpost in a fully extended position.

[0007] Figure 3 is in a partially retracted position Figure 2 Side view of an exemplary height adjustable seat post.

[0008] Figure 4 is in the fully extended position Figure 2 A cross-sectional view of an exemplary height adjustable seat post.

[0009] Figure 5 is in a partially retracted position Figure 3 A cross-sectional view of an exemplary height adjustable seat post.

[0010] Figure 6 yes Figure 4 , showing an example saddle clamp and an example upper plug on the upper end of an example height adjustable seat post.

[0011] Figure 7 yes Figure 5 , showing an exemplary lower plug in the lower end of an exemplary top tube of an exemplary height adjustable seatpost.

[0012] Figure 8 yes Figure 4 , an enlarged view of the lower portion of the illustrated diagram showing an exemplary base plate assembly in the bottom portion of an exemplary seat post.

[0013] Fig. 9 yes Figure 5 The enlarged view with the middle mark of is a cross-sectional view of an exemplary piston assembly with an exemplary valve in a closed state.

[0014] Fig.10 yes Fig. 9 An enlarged view of the labeled is shown showing an exemplary valve.

[0015] Fig.11 is with Fig. 9 The same cross-sectional view shows an exemplary valve in an open state.

[0016] Fig.12 yes Fig.11 An enlarged view of the labeled , showing an exemplary valve.

[0017] Fig.13 is Fig. 9 A perspective view of an exemplary plug assembly implemented in an exemplary piston assembly of .

[0018] Fig.14 yes Fig.13 A bottom view of an exemplary seal retainer of an exemplary plug assembly.

[0019] Fig.15 yes Fig.13 A cross-sectional view of an example plug assembly.

[0020] Fig.16 yes Fig. 9 A perspective view of an exemplary piston assembly.

[0021] Fig.17 is in the fully extended position Figure 2 A cross-sectional view of an exemplary seat post of FIG. 1 , wherein the exemplary seat post includes a volume of incompressible fluid.

[0022] Fig.18 Shown in a partially retracted position Fig.17 An exemplary seat post of .

[0023] Fig.19 yes Figure 2 A side view of an exemplary height adjustable seat post including an exemplary seat post connector assembly for electrically connecting the exemplary height adjustable seat post to a bicycle.

[0024] Fig. 20 yes Fig.19 A perspective view of an exemplary seat post connector assembly.

[0025] Fig.21 yes Fig. 20 An end view of an exemplary first magnetic connector on a seat post connector assembly.

[0026] Fig. 22 yes Fig. 20 A cross-sectional view of an exemplary seat post connector assembly.

[0027] Fig.23 yes Fig.19 The annotated cross-sectional view in Fig. 20 The example connector of the seat post connector assembly connects to a corresponding connector on the bottom of the example height adjustable seat post.

[0028] Fig.24 Can be connected to Figure 1 A perspective view of an exemplary bicycle connector assembly for a bicycle.

[0029] Fig.25 yes Fig.24 A cross-sectional view of an exemplary second magnetic connector of an exemplary bicycle connector assembly.

[0030] FIG. 26A to FIG. 26C Shows the connection Fig.19 An exemplary first magnetic connector of an exemplary seat post connector assembly and Fig.24 An exemplary sequence of an exemplary second magnetic connector of an exemplary bicycle connector assembly.

[0031] Fig. 27 yes Fig.26C , showing an exemplary first magnetic connector and an exemplary second magnetic connector in a connected state.

[0032] Fig.28 is with Fig. 27 The same view and illustrating an exemplary seal that may be implemented in an exemplary second magnetic connector.

[0033] Fig.29 , Fig.30 and Fig.31 Shows the Fig.19 An exemplary height adjustable seat post and an exemplary seat post connector assembly are inserted into Figure 1 An exemplary process for a seat tube of a bicycle.

[0034] Fig.32 Shows Fig.31 An exemplary height adjustable seat post is further inserted into the seat tube so that the cables are gathered in the bottom of the seat tube.

[0035] Fig.33 Shows the connection to Fig.24 An exemplary guide member of an exemplary bicycle connector assembly.

[0036] Fig.34 Shown is a bicycle seat tube mounted in Fig.33 An exemplary guide of .

[0037] Fig.35 An alternative shape of seat tube on a bicycle is shown.

[0038] FIG. 36A to FIG. 36C Shows the use of Fig.19 An exemplary seat post connector assembly from Figure 1 An exemplary process for removing ferrous debris from a bicycle seat tube.

[0039] Fig.37 yes Figure 2 A side view of an example height adjustable seat post and an example wiring harness for electrically connecting to an example bicycle and having an example control device configured to activate the example height adjustable seat post.

[0040] Fig.38 yes Figure 1A partial cross-sectional view of an exemplary bicycle frame, wherein Fig.38 An example height-adjustable seat post and an example wiring harness are installed on an example bicycle.

[0041] Fig.39 yes Fig.37 A block diagram of an example control device.

[0042] Fig.40 yes Fig.37 A first example wiring schematic diagram of an example wiring harness.

[0043] Fig.41 yes Fig.37 2 is a second example wiring schematic for an example wiring harness.

[0044] Fig.42 The two strips are installed to the example brake line. Fig.37 A side view of an example control device with an example wiring harness.

[0045] Fig.43A yes Fig.37 A perspective view of an exemplary control device and an exemplary fastener coupled to the exemplary control device.

[0046] Fig.43B yes Fig.43A End view of an exemplary control device and an exemplary fastener.

[0047] Fig.43C An exemplary control device is shown, wherein Fig.43A and Fig.43B The example fastener is installed to the example brake line.

[0048] Fig.44A is with an exemplary hook Fig.37 A perspective view of an exemplary control device.

[0049] Fig.44B shows the installation to an exemplary brake line Fig.44A An exemplary control device of .

[0050] Fig.45 is similar to Fig.38 A partial cross-sectional view of a frame of an exemplary bicycle with an exemplary wiring harness wired directly to an exemplary seatpost actuation button on a handlebar of the exemplary bicycle.

[0051] The drawings are not drawn 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 components.

[0052] When identifying multiple elements or components that can be quoted separately, the descriptors "first", "second", "third", etc. are used herein. Unless otherwise specified or understood based on their use context, such descriptors are not intended to impart any meaning of priority or time ordering, but are merely used as labels for referring to multiple elements or components separately to facilitate understanding of the disclosed examples. In some examples, the descriptor "first" can be used to refer to an element in a specific embodiment, while the element can be referred to by a different descriptor (such as "second" or "third") in the claims. In this case, it should be understood that such descriptors are used only for the convenience of citing multiple elements or components. DETAILED DESCRIPTION

[0053] Some modern bicycles include height-adjustable seatposts (sometimes called lift-type seatposts or seatpost assemblies). This type of seatpost allows a rider to change the height of their seat while riding a bicycle. For example, a rider can actuate a seatpost actuator on the handlebars and then push the seat downward (e.g., using their buttocks) to retract or compress the seatpost, thereby lowering the height of the seat. When the rider stops actuating the seatpost actuator, the seatpost remains in the retracted position. Then, when the rider desires to raise the seat, the rider can actuate the seatpost actuator again, and the seatpost extends or expands to move the seat back to the original height. This lowering capability may be advantageous when the rider is about to ride the bicycle down a steep slope. For example, it is often desirable to lower the seat while riding downhill so that the rider can stand and lean back without the seat hitting his buttocks. This lowering capability can also be used to lower the seat before the rider encounters a slope, where the rider typically stands up to pedal. This raising / lowering capability is also advantageous in that different occupants can quickly and easily adjust the height of the seat to their comfort without having to manually operate the seat clamp. This adjustability can also be used in many other scenarios.

[0054] Some dropper seatposts rely on hydraulic fluid and / or pneumatic pressure controlled by a mechanical or hydraulically actuated valve to change the height of the seatpost. More recently, some dropper seatposts use an electric solenoid controlled by an electrical signal to actuate the valve. The seatpost includes a piston assembly in the upper tube of the seatpost that divides the upper tube into a positive chamber and a negative chamber. The piston assembly includes a piston in conjunction with a valve and a solenoid. The valve can be opened to allow fluid to flow through the piston between the positive chamber and the negative chamber, thereby enabling the seatpost to contract or expand, or can be closed to block fluid flow to the piston, thereby locking the seatpost in its current position or height. The piston defines a fluid passage. A seal is disposed in a seal gland in the fluid passage. The solenoid moves the plug relative to the seal when activated to block or allow fluid to flow through the fluid passage. However, these types of sealing arrangements are not always reliable because they are susceptible to a phenomenon known as extrusion at moderate / high air pressures, in which the seal may detach from the seal gland. Furthermore, in some cases, when the plug is moved away from the seal in an attempt to open the valve, the seal deforms and follows the plug rather than remaining in its intended position.

[0055] An exemplary height adjustable seatpost having a unique sealing arrangement is disclosed herein, which is not susceptible to extrusion and deformation and is therefore more reliable than known sealing arrangements. The exemplary seatpost disclosed herein includes a piston assembly having a piston and a solenoid-operated valve. The valve includes a plug assembly that is movable to open or close the valve. The plug assembly includes a plug, a seal (e.g., an O-ring), and a seal retainer for fixing the seal to the plug. In this way, the seal is coupled to the plug and moves with the plug. The plug assembly is movable between a closed position and an open position, in which the seal engages with the piston, which blocks the fluid from flowing through the fluid passage of the piston, and in the open position, the seal is spaced apart from the piston and enables the fluid to flow through the fluid passage. With respect to the terms "blocking" and "preventing", for the purposes of the following discussion, the terms "blocking" and "preventing" refer to the most restricted airflow that can be achieved or desired. Therefore, in one example, the terms "blocking" and "preventing" mean the cessation of all airflow between two chambers. However, in another example, the terms "blocking" or "preventing" mean that substantially all airflow stops between two chambers. The exemplary sealing arrangement produces an excellent seal while preventing or reducing seal deformation. In addition, the arrangement of the seal and seal retainer prevents or reduces the above-mentioned extrusion effect. Therefore, the exemplary sealing arrangement disclosed herein is more reliable than known sealing arrangements. Also disclosed herein is a unique arrangement of the solenoid in the piston assembly, wherein the wires for the solenoid are not disposed in the pressurized volume of the positive chamber and the negative chamber. Therefore, the wires do not need to be sealed to prevent leakage as encountered in known designs. This greatly reduces sealing problems and reduces manufacturing time and cost.

[0056] Also disclosed herein is an exemplary connector assembly for electrically connecting a height adjustable seat post to a drive unit or electrical system of a bicycle. In some examples, the seat post connector assembly is coupled to the seat post (e.g., the bottom of the seat post), and the bicycle connector assembly is mounted on the bicycle and electrically coupled to the drive unit or electrical system of the bicycle. The seat post connector assembly has a first magnetic connector having a first magnet and one or more electrical contacts or pins / pins (e.g., spring-loaded spring pins / pins), and the bicycle connector assembly has a second magnetic connector having a second magnet and corresponding electrical contacts or pins. In some examples, the second magnetic connector is coupled to the bottom of the seat tube of the frame of the bicycle or is mounted in the bottom of the seat tube of the frame of the bicycle. When the seat post with the seat post connector assembly is inserted into the seat tube, the first magnetic connector is automatically aligned and connected with the second magnetic connector. When the first magnetic connector and the second magnetic connector are connected or mated, the pin contacts the electrical contact, thereby forming an electrical connection between the seat post and the drive unit or electrical system of the bicycle. In this example, the magnets of the first magnetic connector and the magnets of the second magnetic connector do not form electrical contacts of the first magnetic connector and the second magnetic connector. As such, the first magnetic connector and the second magnetic connector are not as susceptible to ferrous contaminants and debris as seen in known magnetic connectors. Additionally, the magnets do not actually touch or contact each other when the first magnetic connector and the second magnetic connector are connected. This makes it easier to separate the first magnetic connector and the second magnetic connector without causing damage to the wires or cables of the connector assembly.

[0057] Also disclosed herein is an example wiring harness that can be used to connect a seat post to a power supply / power source (e.g., a battery) on a bicycle and also includes a control device for controlling power to the seat post to activate a solenoid or motor. The control device is external to the seat post or separate from the seat post. In some examples, the control device is wirelessly paired with a seat post actuator mounted on the handlebars of the bicycle. When the rider activates the seat post actuator (e.g., presses a button on the seat post actuator), a wireless signal is sent to the control device, and the control device then provides power to activate the solenoid or motor and open a valve in the seat post to enable the seat post to expand or contract. When the rider releases the seat post actuator, the control device stops providing power and thus deactivates the solenoid or reverses the motor polarity to enable the valve to close and thereby lock the seat post in place. Also disclosed herein is an example of a seat post actuator in which the wiring harness is directly wired to the handlebar. In such an example, wireless communication hardware is not required for communication between the seat post actuator and the control device.

[0058] Turning now to the accompanying drawings, Figure 1One example of a human-powered vehicle on which the example seat post and connector assemblies disclosed herein may be implemented is shown. In this example, the vehicle is a bicycle 100 of one possible type, 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. The front and / or forward riding direction or orientation of the bicycle 100 is determined by Figure 1 . Thus, the forward movement direction of the bicycle 100 is indicated by the direction of the arrow A. The bicycle 100 is shown on a riding surface 110. The riding surface 110 may be any riding surface, such as the ground (e.g., a dirt road, a sidewalk, a street, etc.), a man-made structure above the ground (e.g., a wooden ramp), and / or any other surface.

[0059] exist Figure 1 In the example shown, the bicycle 100 includes a seat 112 (sometimes referred to as a saddle) and a seat post 114 for coupling the seat 112 to the frame 102. In the example shown, the seat post 114 is coupled to a seat tube 116 of the frame 102. In some examples, the seat post 114 is coupled to the seat tube 116 by a clamp 118. The seat post 114 is height-adjustable to raise or lower the seat 112. In particular, the seat post 114 can be compressed (shortened) or expanded (lengthened) without adjusting the clamp 118 to change the height of the seat 112 relative to the ground. In some examples, the bicycle 100 includes a seat post actuator 119 having a user-operable member (a seat post actuation button 120 in this example) to control the seat post 114, an example operation of which is disclosed in further detail herein. The bicycle 100 also includes a handlebar 122 coupled to the frame 102 and the front fork 108 to manipulate the bicycle 100. In the example shown, a seat post actuator 119 having a seat post actuator button 120 is mounted on a handlebar 122 to enable a rider to interact with the seat post actuator button 120 while riding the bicycle 100. In other examples, the seat post actuator 119 may be located on another portion of the bicycle 100.

[0060] In the illustrated example, the bicycle 100 has a drive train 124 including a crank assembly 126. The crank assembly 126 is operably coupled to a sprocket assembly 130 mounted to a hub 132 of the rear wheel 106 via a chain 128. The crank assembly 126 includes at least one and typically two crank arms 134 and pedals 136 and at least one front sprocket or chain ring 138. A rear gear changing device 140, such as a derailleur, is provided at the rear wheel 106 to move the chain 128 between different sprockets of the sprocket assembly 130. Additionally or alternatively, the bicycle 100 may include multiple front chain rings and a front gear changing device to move the chain 128 between the multiple chain rings.

[0061] The exemplary bicycle 100 may include a suspension system having one or more suspension components. In the illustrated example, the bicycle 100 includes a rear suspension component 142. In this example, the rear suspension component 142 is implemented as or includes a shock absorber. In some examples, the front fork 108 is also implemented as a front suspension component. For example, a spring may be integrated into one of the legs, and a damper may be integrated into the other leg. The front fork 108 and the rear suspension component 142 absorb shock and vibration while riding the bicycle 100 (e.g., when riding on rough terrain). In other examples, the front fork 108 and / or the rear suspension component 142 may be integrated into the bicycle 100 in other configurations or arrangements.

[0062] In this example, Figure 1 The bicycle 100 is an electric-assisted bicycle (sometimes referred to as an electric bicycle or e-bike). The bicycle 100 includes an electrical system including a power source and a drive unit 146 implemented herein as a battery 144. In the example shown, the battery 144 is coupled to the frame 102. In some examples, the battery 144 is a 36-volt battery. In other examples, the battery 144 may have a higher or lower voltage capacity. In some examples, the battery 144 is removable, such as by pressing a release tab or button or sliding the battery 144 in a particular direction. In some examples, the battery 144 can be removed, charged, and reattached to the frame 102. Additionally or alternatively, the battery 144 can be charged when the battery 144 is attached to the frame 102. The battery 144 can be charged wired or wirelessly. For example, the battery 144 may have a charging port or charging surface for charging.

[0063] In the illustrated example, the drive unit 146 is coupled to the frame 102 and / or otherwise integrated with the frame 102. The drive unit 146 is electrically coupled to the battery 144 via one or more wires routed through the frame 102. The drive unit 146 includes a controller component and one or more motors or actuators for powering the bicycle 100. For example, the drive unit 146 may include a motor having a gear or sprocket that engages with the chain ring 138. The controller component may activate the motor to drive the chain ring 138, thereby providing power to the rear wheel 106. In this example, the drive unit 146 may also control the seat post 114. For example, the seat post 114 may be electrically actuated to enable the rider to adjust the seat height. The seat post 114 may be electrically coupled to the drive unit 146 via a connector system, the details of which are further disclosed in detail herein. The drive unit 146 may control the power (from the battery 144) to the seat post 114. The seat post actuator 119 may be wired or wirelessly connected to the drive unit 146. When the seat post actuation button 120 is pressed, the drive unit 146 applies power to the seat post 114, which activates an internal actuator (e.g., a solenoid) to enable the seat post 114 to compress (shorten) or expand (lengthen), examples of which are disclosed in further detail herein. When the seat post actuation button 120 is released, the drive unit 146 cuts off power to the seat post 114, and the seat post 114 is locked in its current state or position.

[0064] The controller component of the drive unit 146 can be implemented by a processor circuit. As used herein, a "processor circuit" is defined as including: (i) one or more dedicated circuits that are constructed to perform (multiple) specific operations and include one or more semiconductor-based logic devices (e.g., electrical hardware implemented by one or more transistors); and / or (ii) one or more general-purpose semiconductor-based circuits that can be programmed with instructions to perform specific operations and include one or more semiconductor-based logic devices (e.g., electrical hardware implemented by one or more transistors). Examples of processor circuits include programmable microprocessors, field programmable gate arrays (FPGAs) that can instantiate instructions, central processor units (CPUs), graphics processor units (GPUs), digital signal processors (DSPs), XPUs or microcontrollers, and integrated circuits such as application-specific integrated circuits (ASICs). For example, an XPU can be implemented by a heterogeneous computing system that includes multiple types of processor circuits (e.g., one or more FPGAs, one or more CPUs, one or more GPUs, one or more DSPs, etc. and / or combinations thereof) and an application programming interface (API) that can assign computing tasks to one or more processor circuits in multiple types of processor circuits that are most suitable for performing computing tasks.

[0065] In some examples, one or more other components of bicycle 100 may also include electronic components for controlling and / or monitoring various aspects of bicycle 100. For example, Figure 1 The bicycle 100 includes a control device or bicycle computer 148 mounted on the handlebar 122. The bicycle computer 148 can wirelessly communicate with the seat post 114, the rear gear change device 140, the front fork 108, the rear suspension component 142 and / or the drive unit 146 to collect data and / or control the operation of the corresponding components. The bicycle computer 148 can also wirelessly communicate with the power meter of the crank assembly 126. The above components can be paired with a wireless network. Although the present specification may describe components and functions that can be implemented in an embodiment with reference to specific standards and protocols, the examples disclosed herein are not limited to such standards and protocols. For example, standards used for Internet and other packet switching network transmissions (e.g., TCP / IP, UDP / IP, HTML, HTTP, HTTPS) represent examples of the prior art. Such standards are periodically replaced by faster or more efficient equivalents having substantially the same functionality. ANT+ may also or alternatively be used. TM , ZigBee, Wi-Fi and / or AIREA TM Therefore, replacement standards and protocols having the same or similar functions as those disclosed herein are considered to be equivalents thereof.

[0066] Although Figure 1 The exemplary bicycle 100 depicted in the figure is a type of mountain bike, but the exemplary height adjustable seatpost and / or connector system disclosed herein can be implemented on other types of bicycles. For example, the exemplary seatpost and / or connector system disclosed herein 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. In addition, the exemplary seatpost and / or connector system disclosed herein can be implemented on non-electrically assisted bicycles. The exemplary seatpost and / or connector system disclosed herein can also be implemented on other types of two-wheeled, three-wheeled and four-wheeled human-powered vehicles. In addition, the exemplary seatpost and / or connector system disclosed herein can be used for other types of vehicles, such as motor vehicles (e.g., motorcycles).

[0067] Figure 2 and Figure 3 Yes, you can Figure 1 1 is a side view of an exemplary height adjustable seat post 114 implemented on the bicycle 100. Figure 2 The seat post 114 is shown in a fully extended position, and Figure 3 The seat post 114 is shown in a partially retracted position. The seat post 114 may also be referred to as a lift seat post or seat post assembly. The length or height of the exemplary seat post 114 is adjustable so that the seat 112 ( Figure 1 ) can be raised or lowered.

[0068] refer to Figure 2 , the seat post 114 includes a first tube 202 (referred to herein as the lower tube 202) and a second tube 204 (referred to herein as the upper tube 204). The lower tube 202 and the upper tube 204 may also be referred to as seat post portions or sections. Figure 2 As shown, the lower tube 202 and the upper tube 204 are configured in a coaxial arrangement and aligned along an axis 206. The axis 206 corresponds to the central axis or longitudinal axis of the seat post 114. The lower tube 202 has a first end 208 (referred to herein as the upper end 208) and a second end 210 (referred to herein as the lower end 210) opposite the upper end 208. The upper tube 204 similarly has a first end 212 (referred to herein as the upper end 212) and a second end 400 (referred to herein as the lower end 210) opposite the upper end 212. Figure 4 and 5 200 ). The upper tube 204 and the lower tube 202 are configured in a telescoping arrangement. In particular, in this example, the upper tube 204 extends into an opening 214 in the upper end 208 of the lower tube 202. In this way, the upper tube 204 is at least partially disposed in the lower tube 202. The upper tube 204 can slide into and out of the opening 214 in the lower tube 202, which enables the overall height or length of the seat post 114 to be changed. In other examples, the lower tube 202 and the upper tube 204 can be configured such that the lower tube 202 extends into the lower end 400 of the upper tube 204. In the example shown, the seat post 114 includes a collar 216 coupled to the upper end 208 of the lower tube 202. The collar 216 forms a seal around the upper tube 204 to prevent dirt and debris from entering the space between the upper tube 204 and the lower tube 202.

[0069] In the illustrated example, the seat post 114 includes a seat clamp 218 that is coupled (e.g., welded, bolted, threaded, etc.) to the upper end 212 of the upper tube 204. The seat clamp 218 is used to attach the seat 112 ( Figure 1 ) is coupled to the seat post 114. In this example, the seat clamp 218 includes two threaded fasteners 220, 222 (e.g., bolts) that can be tightened to secure the seat 112 to the upper tube 204. In other examples, the seat post 114 can include other mechanisms for attaching to the seat 112. In the illustrated example, the seat post 114 includes a base plate assembly 224 coupled to the lower end 210 of the down tube 202. The base plate assembly 224 can include an electrical connector for connecting to a connector assembly that is used to connect the seat post 114 to the bicycle 100 ( Figure 1 ), as disclosed in further detail herein.

[0070] When the seat post 114 is mounted on the bicycle 100 ( Figure 1), the down tube 202 is connected to the frame 102 ( Figure 1 ). For example, the down tube 202 may be inserted into the seat tube 116 ( Figure 1 ) and by the fixture 118 ( Figure 1 ) is fixed. The upper tube 204 extends upward from the lower tube 202 and supports the seat 112 ( Figure 1 ). As disclosed in further detail herein, the seat post 114 has an internal valve that enables the upper tube 204 to move downward (e.g., slide) relative to the lower tube 202 and provides a rebound force to move the upper tube 204 upward relative to the lower tube 202. This enables the rider to easily lower the height of the seat 112 or raise the height of the seat 112. The seat post 114 can be Figure 2 The seat post 114 can be adjusted between a fully extended position (sometimes referred to as an apex position) and a fully retracted position, in which the upper tube 204 moves into the lower tube 202 until a stop or limit is reached. The seat post 114 can also expand / contract to any position between the fully extended position and the fully retracted position and remain in place. For example, Figure 3 An example is shown in which the upper tube 204 has been partially moved into the lower tube 202. Figure 2 Compared with the position in the Figure 1 ) will be lowered or closer to the ground.

[0071] As an example operation, if the rider desires to lower the seat 112 ( Figure 1 ), the rider actuates the seat post actuator 119, which in this example is activated by pressing the seat post actuation button 120 ( Figure 1 ) and is activated. Figure 1 In the embodiment of the present invention, the seat post actuator 119 is mounted on the handlebar 122 so that the rider can actuate the seat post actuator button 120 with one of his / her fingers (e.g., their thumb). Alternatively, the seat post actuator button 120 can be a control lever or other type of user-operable device, such as a display device with a touch screen. When the seat post actuator button 120 is pressed, the seat post actuator 119 sends a signal (e.g., a wireless signal) to the drive unit 146 ( Figure 1 ). The drive unit 146 receives a signal from the seat post actuator 119 and activates an internal actuator (e.g., a solenoid or a motor) to open an internal valve disposed in a pneumatic chamber in the upper tube 204, as disclosed in further detail herein. When the internal valve is open, the rider can push down on the seat 112, which slides the upper tube 204 into the lower tube 202, as described in further detail herein. Figure 3 In some examples, the rider can apply this force by sitting on the seat 112 and applying a downward force with their hips. When the seat 112 reaches the desired height, the rider can release the seat post actuation button 120. In response, the drive unit 146 ( Figure 1 ) cuts off or stops power to the internal valve, which causes the internal valve to close and thereby holds the upper tube 204 in place relative to the lower tube 202. When the rider wishes to raise the seat 112, the rider can press the seat post actuation button 120 again. The drive unit 146 receives the signal and opens the internal valve. When little or no downward force is applied to the seat 112, the internal pneumatic system pushes the upper tube 204 upward from the lower tube 202, thereby moving the seat 112 upward. When the desired position is reached, the rider can release the seat post actuation button 120, which causes the internal valve to close and holds the seat post 114 in the current position. Thus, the rider can easily adjust the seat post height.

[0072] In some examples, to activate the internal valve, the rider presses and holds the seat post actuation button 120. As long as the seat post actuation button 120 is pressed, the valve remains in an open state, which allows the upper tube 204 to slide up or down relative to the lower tube 202. When the rider releases the seat post actuation button 120, the spacer valve is closed, which holds the upper tube 204 in place. However, in other examples, the system can be configured so that the rider can press and release the seat post actuation button 120 to open the valve, and then the rider presses the seat post actuation button 120 a second time to close the valve.

[0073] Figure 4 is corresponding to Figure 2 A cross-sectional view of the seat post 114 in a fully extended position, and Figure 5 is corresponding to Figure 3 A cross-sectional view of the seat post 114 in a partially retracted position. Figure 4 and Figure 5 .like Figure 4 and Figure 5 As shown, the upper tube 204 has a lower end 400. The lower end 400 is disposed in the lower tube 202. In this way, the lower tube 202 and the upper tube 204 overlap at the overlap area or region. Figure 4 In the embodiment, the lower tube 202 and the upper tube 204 overlap by a length L1, and Figure 5 In the embodiment, the lower tube 202 and the upper tube 204 overlap by a length L2 greater than L1. Figure 5 The height or length of the seat post 114 is less than Figure 4 The height or length of the seat post 114 in FIG.

[0074] like Figure 4 and Figure 5As shown, the upper tube 204 defines a chamber 402. The chamber 402 is filled with a pressurized fluid, such as a pneumatic gas (e.g., air, nitrogen). The seat post 114 includes an upper seal head 404 (e.g., an upper seal or bushing) coupled to the upper tube 204 and disposed in the upper tube 204 at or near the upper end 212. The seat post 114 also includes a lower seal head 406 (e.g., a lower seal or bushing) coupled to the upper tube 204 and disposed in the upper tube 204 at or near the lower end 400. The upper seal head 404 and the lower seal head 406 seal the ends of the upper tube 204 to retain the fluid in the chamber 402.

[0075] exist Figure 4 and Figure 5 In the example shown, the seat post 114 includes a shaft 408, which may also be referred to as a rod. The shaft 408 is disposed in the lower tube 202 and coupled to the lower tube 202 such that the shaft 408 is fixed relative to the lower tube 202. In this example, the shaft 408 is coupled to the lower tube 202 at or near the lower end 210. The shaft 408 extends upward through the lower tube 202, through the lower sealing head 406, and into the upper tube 204. Specifically, the shaft 408 extends through the lower sealing head 406 and into the chamber 402 defined in the upper tube 204. When the seat post 114 expands or contracts, the lower sealing head 406 can slide up and down along the shaft 408.

[0076] exist Figure 4 and Figure 5In the example shown, the seat post 114 includes a piston assembly 410 disposed in the upper tube 204. The piston assembly 410 may also be referred to as a valve assembly or a flow control assembly. The piston assembly 410 is disposed in the chamber 402 of the upper tube 204 and is coupled (e.g., threadedly coupled) to the shaft 408. Thus, when the seat post 114 expands or contracts, the piston assembly 410 moves closer to or further away from the upper end 212 and the lower end 400 of the upper tube 204. The piston assembly 410 includes a piston 412 that seals against an inner surface 414 of the upper tube 204. When the seat post 114 expands or contracts, the inner surface 414 of the upper tube 204 can slide up and down along the piston 412. The piston assembly 410, and in particular the piston 412, divides the chamber 402 of the upper tube 204 into a first chamber 416 and a second chamber 418. The first chamber 416 is defined by the piston assembly 410, the upper sealing head 404, and the upper tube 204. The second chamber 418 is defined by the piston assembly 410, the lower sealing head 406, the upper tube 204, and the shaft 408. The volumes of the first chamber 416 and the second chamber 418 change as the upper tube 204 moves up and down relative to the piston assembly 410. The first chamber 416 and the second chamber 418 are filled with a fluid. In this example, the seat post 114 is based on a pneumatic platform. Therefore, the first chamber 416 and the second chamber 418 can be filled with a pressurized gas, such as nitrogen or air. In other examples, the first chamber 416 and the second chamber 418 can be filled with another type of compressible gas. The piston assembly 410 controls the flow of fluid (e.g., pressurized gas) through the piston 412 between the first chamber 416 and the second chamber 418.

[0077] exist Figure 4 and Figure 5In the example shown, the seat post 114 includes a valve 420 and an actuator 422 for operating the valve 420. In this example, the actuator 422 is implemented as a solenoid, referred to herein as the solenoid 422. However, in other examples, the actuator 422 can be implemented by a motor (e.g., a DC motor). In the example shown, the valve 420 and the solenoid 422 are incorporated into and / or integrated with the piston assembly 410. In this way, the valve 420 and the solenoid 422 are disposed in the upper tube 204 and at least partially disposed in the overlapping area (e.g., L1 or L2) between the upper tube 204 and the lower tube 202. In this example, the valve 420 is a poppet valve that includes a plug or poppet that can move in a linear direction to open or close the valve 420. However, in other examples, other types of valves can be used. The valve 420 can be operated (e.g., opened or closed) to control the flow of fluid through the piston 412 between the first chamber 416 and the second chamber 418. In particular, the valve 420 can be operated between a closed state, in which fluid is blocked from flowing through the piston 412 between the first chamber 416 and the second chamber 418, which maintains the lower tube 202 and the upper tube 204 in their current positions, and an open state, in which fluid is able to flow through the piston 412 between the first chamber 416 and the second chamber 418, which enables the upper tube 204 to move relative to the lower tube 202 to adjust the seat 112 ( Figure 1 ) height. Solenoid 422 controls the state of valve 420, as disclosed in further detail herein.

[0078] Brief reference Figure 6 , Figure 6 yes Figure 4 2, and an enlarged view of the upper sealing head 404 and the seat clamp 218 on the upper end 212 of the upper tube 204. The seat clamp 218 includes a head 600 that defines an opening 602 through which the upper end 212 of the upper tube 204 is inserted. A retaining clip 604 is used to prevent the head 600 from moving upward relative to the upper tube 204. The seat clamp 218 includes a lower rail clamp 606 having a convex arcuate bottom surface 608 that engages a complementary concave arcuate top surface 610 of the upper tube 204. The seat clamp 218 includes an upper rail clamp 612 positioned above the lower rail clamp 606. Nuts 614, 616 are received in recesses in the upper rail clamp 612. The heads of the threaded fasteners 220, 222 are received in recesses in the head 600 and threaded into nuts 614, 616. Figure 1) has a rail that can be positioned between an upper rail clamp 612 and a lower rail clamp 606. To position the seat 112 for the rider's preference, the rider can slide the rail of the seat 112 forward and backward and / or can rotate the lower rail clamp 606 about the center of its arcuate bottom surface 608 to tilt the seat 112 upward or downward. Once the seat 112 is in the desired position, the rider can tighten the threaded fasteners 220, 222 so that the seat rail and the lower rail clamp 606 are tightly clamped between the head 600 and the upper rail clamp 612.

[0079] like Figure 6 As shown, the upper seal head 404 is disposed in the upper tube 204 and abuts against the shoulder 618 of the upper tube 204, which prevents the upper seal head 404 from moving further upward. A set screw 620 is threaded into the upper tube 204 and tightened against the upper seal head 404, which prevents the upper seal head 404 from rotating. A seal 622 (e.g., an O-ring) is received in a groove in the upper seal head 404 and prevents fluid from leaking out of the chamber 402.

[0080] exist Figure 6 In the example shown, valve 624 is disposed in an opening 626 extending through the upper sealing head 404. Valve 624 enables a user to add pneumatic fluid to or remove pneumatic fluid from the chamber 402 in the upper tube 204. In this example, valve 624 is threaded into opening 626. However, in other examples, valve 624 can be coupled to the upper sealing head 404 via other techniques. Valve cover 628 is threaded onto the top of valve 624 to protect valve 624 from dirt and other debris. A user can remove the seat clamp 218 and valve cover 628 to access valve 624, thereby adding fluid to or removing fluid from chamber 402. In this example, valve 624 is implemented as a Schrader valve / Schrader valve. However, in other examples, valve 624 can be implemented as another type of valve, such as a Presta valve / valve.

[0081] As an exemplary operation of pressurizing chamber 402, seat clamp 218 and valve cover 628 may be removed, and an air pump may be attached to the top of valve 624. As air is pumped into chamber 402, the air first increases the pressure in first chamber 416 (positive chamber). To allow air to enter second chamber 418 (negative chamber) ( Figure 4 ), the rider may actuate the seat post actuation button 120 ( Figure 1 ) to open valve 420 ( Figure 4). When valve 420 is opened, air flows from first chamber 416 to second chamber 418 until the pressures in chambers 416, 418 are equal. The rider can repeat this process, pumping air into first chamber 416 and actuating valve 420 to equalize the pressures in first chamber 416 and second chamber 418 until a final desired system pressure is achieved. In some examples, seat post 114 is pressurized to a pressure in the range of 300-600 psi. However, in other examples, seat post 114 can be pressurized to a higher or lower pressure.

[0082] refer to Figure 4 and Figure 5 , in the example shown, the first chamber 416 is a positive pressure chamber and the second chamber 418 is a negative pressure chamber. The first chamber 416 and the second chamber 418 are pressure-tight chambers. The lower tube 202 defines a third chamber 426 between the lower sealing head 406 and the base plate assembly 224. The third chamber 426 is considered a pressure-controlled chamber. The volume of the third chamber 426 changes based on the actuation position. In some examples, the third chamber 426 is open to the atmosphere and therefore contains air at atmospheric pressure. However, in other examples, the third chamber 426 is also a pressure-tight chamber (e.g., containing pressurized air or nitrogen). In such an example, the air in the third chamber 426 can be compressed when the upper tube 204 moves downward. The compressed air can provide a biasing force to return the seat post 114 to the fully extended position. In other examples, the third chamber 426 can have other mechanisms for compensating for volume changes, such as a floating piston or a deformable bladder. The first chamber 416, the second chamber 418, and the third chamber 426 can be any number of shapes and / or sizes. For example, the first chamber 416, the second chamber 418, and the third chamber 426 can be cylindrical (e.g., having an outer diameter between 27 millimeters (mm) and 35 mm, respectively) and can be sized for a particular maximum seat post adjustment amount (e.g., 150 mm).

[0083] like Figure 4 and Figure 5 As shown, the piston 412 has a first side 428 facing the upper seal head 404 and a second side 430 opposite the first side 428 and facing the lower seal head 406. The axial surface area of ​​the first side 428 of the piston 412 (as viewed along the axis 206) is greater than the axial surface area of ​​the second side 430 of the piston 412. This is because a portion of the axial surface area of ​​the second side 430 is reduced by the cross-sectional area of ​​the shaft 408. When the valve 420 is in the closed state and the seat rod 114 is in the fully extended position ( Figure 4), the first chamber 416 acts as a spring and is configured to bias the upper tube 204 toward the fully extended position of the seat post 114. The first side 428 and the second side 430 of the piston 412 are sized and shaped, and when the seat post 114 is in the fully extended position, the first chamber 416 and the second chamber 418 are pressurized, respectively, so that the gas in the first chamber 416 supports the weight of the rider. In some examples, when the seat post 114 is in the fully extended position, the seat 112 ( Figure 1 ) droop is less than 10 mm. The seat post 114 operates because the axial surface area of ​​the first side 428 of the piston 412 versus the pneumatic pressure ratio between the first chamber 416 and the second chamber 418 is based on a force calculation to hold the rider. This also depends on the volume of the second chamber 418 when the seat post 114 is in the fully extended position. When the seat post 114 is Figure 4 When the seat post 114 is in the fully extended position, the volume of the first chamber 416 is greater than the volume of the second chamber 418. In some examples, the volume of the second chamber 418 may not exceed 20 percent of the volume of the first chamber 416 when the seat post 114 is in the fully extended position. In other examples, the first chamber 416 and the second chamber 418 may have different volume ratios in the fully extended position. For example, the volume of the second chamber 418 may not exceed 10 percent, 5 percent, or 3 percent of the volume of the first chamber 416 when the seat post 114 is in the fully extended position. This allows the seat post 114 to act as a zero negative pressure preloaded pneumatic spring. This is the principle of maintaining the rider's perception of the rider's experience as rigidity. At the fully extended position of the seat post 114, the seat 112 can move a small amount, but the movement is generally imperceptible to the rider.

[0084] As an example operation, assume that the seat post 114 is in Figure 4 The fully extended position shown, and the rider desires to lower the seat 112 ( Figure 1 ). The rider presses the handlebar 122 ( Figure 1 ) on the seat post actuation button 120 ( Figure 1 ), and the drive unit 146 ( Figure 1) activates solenoid 422 to open valve 420. When valve 420 is open, a downward force can be applied to seat 112 to compress seat post 114. For example, a rider can sit (or partially sit) on seat 112 to apply downward pressure with his / her buttocks. This downward pressure forces fluid (e.g., pressurized gas) from first chamber 416 to flow through valve 420 and through piston 412 and into second chamber 418. This enables upper tube 204 to move downward relative to upper tube 204 (lower tube 202), thereby lowering seat 112. As upper tube 204 moves downward, the volume of first chamber 416 decreases and the volume of second chamber 418 increases. The rider can move (e.g., lower) seat 112 to any position between the fully extended position and the fully retracted position. Figure 5 The seat post 114 is shown in an intermediate position between the fully extended position and the fully retracted position.

[0085] When the vehicle seat 112 is in a desired position (such as Figure 5 When the rider releases the seat post actuation button 120 ( Figure 1 ). The drive unit 146 deactivates the solenoid 422, which closes the valve 420. When the valve 420 is closed, fluid (e.g., pressurized gas) is prevented from flowing through the piston assembly 410 between the first chamber 416 and the second chamber 418. This limits or prevents further relative movement of the upper tube 204 relative to the lower tube 202. When the valve 420 is closed, the balance of forces in the system is such that the axial pressure acting on the first side 428 of the piston 412 is approximately equal to the axial pressure acting on the second side 430 of the piston 412. When a downward force is applied to the upper tube 204, the use of a compressible fluid such as air enables the pressure chamber to act as a compression spring. Therefore, when a rider sits on the seat 112, the seat post 114 can support the weight of the rider. In some examples, when the seat post 114 is in an intermediate position (between the fully extended position and the fully retracted position), the seat 112 can sag a small amount (e.g., 40 mm or less) due to the weight of the rider. The seat post 114 can be held in any position between the fully extended position and the fully retracted position. If the seat post 114 is moved to the fully retracted position, the collar 216 on the down tube 202 can contact the saddle clamp 218 and / or the lower sealing head 406 can contact the base plate assembly 224 on the lower end 210 of the down tube 202. This provides a hard stop to prevent further movement. When the seat post 114 is in the fully retracted position, the saddle 112 may not sag due to this hard stop. In some examples, when the seat post 114 is in the fully expanded position ( Figure 4 ), the piston 412 engages the top of the lower sealing head 406. This forms a limit or stop that prevents the upper tube 204 from moving further upward relative to the lower tube 202.

[0086] When it is desired to raise the seat post 114 back to the fully extended position, the rider presses the seat post actuation button 120 ( Figure 1 ), and the drive unit 146 ( Figure 1 ) activates solenoid 422 to open valve 420. In the absence of an external downward force acting on the seat 112 ( Figure 1 ), the pressure in the first chamber 416 of the upper tube 204 causes the upper tube 204 to move upward relative to the lower tube 202 back to the fully extended position. This is because the axial surface area of ​​the first side 428 of the piston 412 is greater than the axial surface area on the second side 430 of the piston 412. Thus, the force of the pressure in the first chamber 416 acting on the first side 428 of the piston 412 is greater than the force of the pressure in the second chamber 418 acting on the second side 430 of the piston 412. As a result, the upper tube 204 is forced upward to the fully extended position. As the upper tube 204 moves upward, fluid flows from the second chamber 418 through the valve 420 to the first chamber 416. Therefore, the axial pressure imbalance biases the seat post 114 toward the fully extended position. This enables the seat post 114 to automatically expand back Figure 4 When the seat post 114 is fully extended, the rider can release the seat post actuation button 120, which deactivates the solenoid 422 to close the valve 420, thereby maintaining the seat post 114 in the fully extended position. Thus, the pressurized gas in the first chamber 416 biases the upper tube 204 and the lower tube 202 away from each other, and the pressurized gas in the second chamber 418 biases the upper tube 204 and the lower tube 202 toward each other.

[0087] As described above, in some examples, the third chamber 426 is open to atmosphere. In this way, the third chamber 426 provides minimal (if any) biasing force on the upper tube 204. However, in other examples, the third chamber 426 can be sealed and pressurized with a positive pressure. In such an example, when the upper tube 204 moves downward, the volume of the third chamber 426 decreases, which increases the pressure in the third chamber 426. This pressure acts upward on the lower sealing head 406 to help bias the upper tube 204 to the fully extended position.

[0088] refer to Figure 7 , Figure 7 yes Figure 5 An enlarged view of the label 500 of FIG. 400 is shown, showing the lower sealing head 406. Figure 7As shown, the lower seal head 406 is threadedly coupled to the lower end 400 of the upper tube 204, which seals the lower end 400 of the upper tube 204. The seat post 114 includes a lower bushing 700 in a groove in the lower seal head 406, and the lower bushing 700 is slidably engaged with the inner surface 702 of the lower tube 202. When the upper tube 204 is telescoped relative to the lower tube 202, the upper tube 204 is radially supported by the lower bushing 700. A static seal 704 (e.g., an O-ring) is disposed in a groove in the lower seal head 406, which forms a seal between the lower seal head 406 and the inner surface 414 of the upper tube 204. The seat post 114 includes a shaft seal 706 disposed in a hole in the lower seal head 406, and the shaft seal 706 forms a seal between the lower seal head 406 and the shaft 408 to prevent leakage through the lower seal head 406. The shaft seal 706 also enables the lower seal head 406 to slide smoothly up and down along the shaft 408 as the seat post 114 expands and contracts. A retainer 708 is disposed adjacent the shaft seal 706 to hold the shaft seal 706 in place. In the example shown, a rubber bumper 710 is positioned on the top surface of the lower seal head 406, which can be moved by the piston 412 ( Figure 4 ) contact. In other examples, the seat post 114 can include more or fewer seals and / or the seals can be arranged in other configurations.

[0089] refer to Figure 4 and Figure 5 , the collar 216 is threadedly coupled to the upper end 208 of the lower tube 202. The seat post 114 includes a dust seal 432 disposed in a recess in the collar 216 and contacting an outer surface 434 of the upper tube 204. The dust seal 432 prevents or limits dust and other debris from entering the area between the lower tube 202 and the upper tube 204. An upper bushing 436 is received in a recess in the collar 216 and slidingly supports the upper tube 204 supported by the upper bushing 436.

[0090] As described above, the seat stem 114 includes a solenoid 422 for operating the valve 420. The seat stem 114 may include one or more wires and / or one or more connectors to form an electrical path for supplying power to activate the solenoid 422, which is disposed in the chamber 402 of the upper tube 204. Figure 4 and Figure 5, the seat post 114 includes a first wire 438 and a second wire 440. In the example shown, the first wire 438 and the second wire 440 are disposed in and extend through the shaft 408. Specifically, the first wire 438 and the second wire 440 extend through the shaft 408 between the solenoid 422 in the piston assembly 410 and the base plate assembly 224 on the bottom of the seat post 114. The first wire 438 and the second wire 440 are connected to an electrical connector on the base plate assembly 224, which can be connected to a power source, as disclosed in further detail herein. In some examples, the first wire 438 and the second wire 440 are positive and negative wires. In some examples, each of the wires 438, 440 has an insulating sheath. In other examples, the wires 438, 440 can be sheathed together.

[0091] Figure 8 yes Figure 4 439, showing the base plate assembly 224. The base plate assembly 224 includes a base plate 800 that is threadedly coupled (e.g., screwed into) the lower end 210 of the lower tube 202. The shaft 408 is coupled to the base plate 800 and extends upward from the base plate 800. In this way, the shaft 408 is coupled to the lower tube 202 and is maintained in a fixed position relative to the lower tube 202. In this example, the shaft 408 is threadedly coupled to the base plate 800. However, in other examples, the shaft 408 can be coupled to the base plate 800 via other techniques (e.g., threaded fasteners, adhesives, etc.). The base plate assembly 224 has a foam ring 802 on the top of the base plate 800.

[0092] like Figure 8As shown, the substrate 800 has a bottom end 804, wherein a hole 806 extends into the bottom end 804. The substrate assembly 224 includes an electrical connector 808 (e.g., a socket or jack) disposed in the hole 806. The first wire 438 and the second wire 440 are connected to the connector 808. In this example, the connector 808 has a first pin 812 and a second pin 814, and can therefore be referred to as a two-pin connector. The first wire 438 and the second wire 440 extend into the hole 806 and are electrically connected to the first pin 812 and the second pin 814 of the connector 808, respectively (e.g., via welding). In this example, the connector 808 is held in place via a set screw 810, which also provides strain relief to the first wire 438 and the second wire 440. In other examples, the connector 808 can be held in the hole 806 via other techniques. In this example, the pins 812, 814 are recessed or set back from the bottom end 804 of the base plate 800, which helps protect the pins 812, 814 from damage. However, in other examples, the pins 812, 814 can extend outward or extend beyond the bottom end 804. The connector 808 can be connected to a power source, which can supply power to the first wire 438 and the second wire 440 to activate the solenoid 422 ( Figure 4 ) and control valve 420( Figure 4 ), as disclosed in further detail herein. In the illustrated example, the first wire 438 and the second wire 440 extend through the channel 816 in the base plate 800. The interior of the shaft 408 is open to the atmosphere via the hole 806 and the channel 816. Therefore, the interior of the shaft 408 can be at atmospheric pressure. Although the connector 808 is on the lower end 210 of the lower tube 202 in this example, in other examples, the connector 808 can be disposed at another location.

[0093] Fig. 94 is an enlarged cross-sectional view of the piston assembly 410 in the upper tube 204. The piston assembly 410 includes a piston 412. The piston 412 is threadedly connected to the shaft 408. The piston 412 can be formed by one or more body parts connected together. In the example shown, the piston 412 includes a first body part 900 and a second body part 902 connected to the first body part 900. In this example, the first body part 900 and the second body part 902 are threadedly connected, but can be connected via other technologies in other examples. In this example, the first body part 900 includes and / or otherwise forms a valve 420, and the second body part 902 contains a solenoid 422. Therefore, the first body part 900 can be referred to as a valve body, and the second body part 902 can be referred to as a solenoid housing. The shaft 408 is threadedly connected to the second body part 902. In the example shown, the piston assembly 410 includes a seal 904 (e.g., a brass extrusion washer) between the shaft 408 and the shoulder 906 in the second body part 902. The seal 904 provides a sealed interface between the shaft 408 and the second body portion 902 to prevent or limit fluid leakage between the second chamber 418 and the interior of the piston 412 .

[0094] In the example shown, the first body portion 900 has or forms a head 908 that seals against the inner surface 414 of the upper tube 204. In particular, in this example, the piston assembly 410 includes a seal 910 (e.g., an O-ring) that seals around the head 908 to seal against the inner surface 414 of the upper tube 204, which can be referred to as a chamber seal or piston seal. In this way, the piston 412 divides the chamber 402 of the upper tube 204 into a first chamber 416 (formed above the head 908) and a second chamber 418 (formed below the head 908). In the example shown, the piston assembly 410 includes a static seal 912 (e.g., an O-ring) disposed between the first body portion 900 and the second body portion 902, which helps to fluidly separate the fluid pressure on the outside of the piston 412 from the fluid pressure inside the piston 412. In some examples, the first body portion 900 and the second body portion 902 are made of the same material (such as metal (e.g., steel, aluminum, etc.)). In other examples, the first body portion 900 and the second body portion 902 are constructed of different materials. For example, in some cases, the first body portion 900 is constructed of aluminum and the second body portion 902 is constructed of a ferromagnetic material (such as steel).

[0095] In the illustrated example, the first body portion 900 of the piston 412 defines a central passage 914 (e.g., a hole, a passage, etc.). The central passage 914 forms a portion of a fluid passage across the head 908 that fluidly connects the first chamber 416 and the second chamber 418, as disclosed in further detail herein. In the illustrated example, the valve 420 includes a plug assembly 916 (which may also be referred to as a plunger assembly or a poppet valve assembly). A portion of the plug assembly 916 is slidably disposed in the central passage 914. The plug assembly 916 is movable in a linear direction (in a linear direction). Fig. 9 In the example shown, the plug assembly 916 is aligned with the axis 206 and is movable along the axis 206. The valve 420 is formed by the piston 412 and the plug assembly 916. As described above, the valve 420 is operable between a closed state that blocks fluid flow through the piston 412 and an open state that allows fluid flow through the piston 412. When the plug assembly 916 is in a position such as Fig. 9 In the closed position shown, the plug assembly 916 blocks fluid from flowing across the piston 412 through the central passage 914. In this way, fluid is prevented from flowing across the piston 412 between the first chamber 416 and the second chamber 418. In the open position, the plug assembly 916 is moved to a position that enables or allows fluid to flow across the piston 412 between the first chamber 416 and the second chamber 418 through the central passage 914.

[0096] In the example shown, the plug assembly 916 includes a plug 918, a seal 920 and a seal holder 922. The plug 918 may also be referred to as a plunger or a lift. The plug 918 is controlled by the solenoid 422 to move linearly up and down to open or close the valve 420, as further disclosed in detail herein. The seal 920 is carried by the plug 918. In this way, the seal 920 moves up and down in the piston 412 together with the plug 918. In this example, the seal 920 is at least partially coupled to the plug 918 via the seal holder 922. However, in other examples, the seal 920 may be coupled to the plug 918 via other mechanisms. In the example shown, the plug 918 has a first plug portion 928, a second plug portion 926 and a third plug portion 924. The second plug portion 926 extends between the first plug portion 928 and the third plug portion 924. The first plug portion 928 has a larger diameter than the second plug portion 926 and the third plug portion 924. The second plug portion 926 has a smaller diameter than the third plug portion 924. The seal 920 is disposed around the second plug portion 926. In some examples, the seal 920 is constructed of an elastomeric material. In some examples, the seal 920 is an O-ring, such as an O-ring constructed of nitrile rubber (also known as NRB or Buna-N). However, in other examples, the seal 920 may be implemented by another type of seal and / or constructed of other materials. For example, the seal 920 may be a rubber layer molded onto a portion of the plug 918. When the plug 918 is in Fig. 9 In the closed position shown, the seal 920 engages with a shoulder 930 (which may be referred to as a seat) of the first body portion 900 of the piston 412. Thus, the sealing interface blocks or prevents fluid from flowing through the central passage 914 and between the first chamber 416 and the second chamber 418. The piston assembly 410 includes a spring 932 (e.g., a compression spring) that biases the plug assembly 916 in an upward direction, which corresponds to the closed position of the valve 420. Thus, the seal 920 is firmly pressed against the shoulder 930, thereby forming a seal to block or prevent fluid flow. In the example shown, the spring 932 is disposed between the seal retainer 922 and the spool 934 of the solenoid 422. However, in other examples, the spring 932 may be disposed in other locations.

[0097] In the example shown, the piston 412 defines an inner cavity 935 in the second body portion 902. The solenoid 422 is disposed in the inner cavity 935. The solenoid 422 includes a bobbin 934, a coil 936 (e.g., a copper wire winding) wound around the bobbin 934, and a core 938 (which may also be referred to as a pole piece). In this example, the armature portion 928 of the plug 918 serves as the armature of the solenoid 422. However, in other examples, the solenoid 422 may include a separate armature coupled (e.g., threaded, bolted, coupled via an interference fit, etc.) to the plug 918. In some examples, the bobbin 934 is made of anodized aluminum. In other examples, the bobbin 934 may be made of other materials. In some examples, the coil 936 may be made of 30AWG insulated copper wire. However, in other examples, the coil 936 may be made of other materials. The coil 936 may include any number of turns or loops. In some examples, the coil 936 has 850 turns. In some examples, the total resistance of the wire windings is 11.1 ohms. Thus, when a 36 volt power supply is applied to the coil 936, the current flowing through the coil 936 is approximately 3.24 amperes, and the magnetomotive force generated by the coil 936 is approximately 2750 ampere turns (or ampere turns). However, in other examples, the coil 936 may include more or fewer turns than 850 and / or the resistance may be greater than or less than 11.1 ohms. In the illustrated example, the bobbin 934 is disposed in the second body portion 902 and engages with a shoulder 940 near the bottom of the second body portion 902. The piston assembly 410 includes a static seal 942 (e.g., an O-ring) disposed in a recess in the upper portion of the bobbin 934 and seals against an inner surface 944 of the second body portion 902.

[0098] like Fig. 9 As shown, the first wire 438 and the second wire 440 extend through the shaft 408 and into the lower portion of the inner cavity 935 of the piston 412. The first wire 438 and the second wire 440 are electrically coupled to the solenoid 422. Specifically, the first wire 438 and the second wire 440 extend through the bottom of the spool 934 and are electrically connected to the coil 936. In some examples, the first wire 438 and the second wire 440 can be electrically connected to opposite ends of the coil 936, such as via welding. In the example shown, a set screw 946 is threaded into the spool 934 and tightened against the first wire 438 and the second wire 440 to provide strain relief.

[0099] In the example shown, the bobbin 934 defines a bore 948. The core 938 is disposed in the bore 948 of the bobbin 934 (near the bottom). The solenoid 422 includes a seal 950 between the core 938 and an inner surface 952 of the bobbin 934. In some examples, the core 938 is constructed of a ferromagnetic material such as steel. The bottom of the bobbin 934 has a vent passage 954 below the core 938 that vents or allows air to escape from under the core 938 when the core 938 is inserted into the bore 948 of the bobbin 934 during assembly. The armature portion 928 of the plug 918 is slidably disposed in the bore 948 of the bobbin 934. When the plug 918 is in place Fig. 9 In the closed position shown, the armature portion 928 of the plug 918 is separated from the core 938 by a gap G. In some examples, the gap G is about 1.2 mm. In other examples, the gap G may be larger or smaller depending on the relative sizes and configurations of the components of the piston assembly 410. When the solenoid 422 is activated, the armature portion 928 moves downward and contacts the core 938, as shown in conjunction with Fig.11 Further details are shown.

[0100] Fig.10 yes Fig. 9 956, shows the plug assembly 916 in a closed position, which corresponds to the closed state of the valve 420. The first body portion 900 of the piston 412 has a first side 1000 and a second side 1002 opposite the first side 1000. The first body portion 900 defines a cavity or bore 1004 extending into the second side 1002. The central passage 914 extends between the first side 1000 and the bore 1004. Fig.10 As shown, the valve 420 includes a seal 1006 in the central passage 914 and engaged with the third plug portion 924 of the plug 918. This prevents fluid from leaking through the central passage 914 past the third plug portion 924. The first body portion 900 of the piston 412 defines a plurality of axial passages 1008 (one of which is located at the bottom of the first side 1000 and the second side 1002) extending between the holes 1004. Fig.10 914). The axial passage 1008 is parallel to and separate from the central passage 914. Thus, the axial passage 1008 and the bore 1004 in the first body portion 900 are in fluid communication with the fluid in the first chamber 416. In the example shown, the first body portion 900 has a plurality of radial passages 1010 extending radially between the central passage 914 and an outer surface 1012 of the piston 412 (two of which are in the Fig.101006). Thus, radial passage 1010 and a portion of central passage 914 (below seal 1006) are in fluid communication with the fluid in second chamber 418. Thus, axial passage 1008, bore 1004, central passage 914, and radial passage 1010 form a fluid passage 1014 through piston 412 and between first chamber 416 and second chamber 418. In other words, piston 412 defines fluid passage 1014 between first chamber 416 and second chamber 418. Fig.10 4, piston assembly 916 is in a closed (up) position, which blocks fluid from flowing through fluid passage 1014 and between first chamber 416 and second chamber 418. Piston assembly 916 can be moved to an open (down) position to enable or allow fluid to flow through fluid passage 1014 between first chamber 416 and second chamber 418, as disclosed in further detail herein.

[0101] In the example shown, the seal retainer 922 has a central channel 1016 with a plurality of shoulders. The seal retainer 922 is coupled to the plug 918, and specifically to the armature portion 928 of the plug 918. In this example, the inner surface 1018 of the seal retainer 922 engages with the outer surface 1020 of the plug 918 via an interference fit (sometimes referred to as a friction fit or press fit). In other examples, the seal retainer 922 can be coupled to the plug 918 via other techniques (e.g., via threaded fasteners, adhesives, etc.). The second plug portion 926 extends from the top side 1022 of the armature portion 928. The seal 920 is disposed around the second plug portion 926 and engages with the top side 1022 of the first plug portion 928. In the example shown, the second plug portion 926 of the plug 918 has a radially extending flange 1024. The seal 920 is captured (e.g., axially) between the flange 1024 and the first plug portion 928. In addition, as shown in Fig.10 As shown, the seal 920 is captured in a space 1026 defined between the seal retainer 922, the second plug portion 924 (and flange 1024), and the first plug portion 928. This configuration securely holds the seal 920 and prevents or limits seal extrusion or deformation as seen in known seat stem valves.

[0102] like Fig.10 As shown, when the solenoid 422 ( Figure 4 and Fig. 9) is not activated, the plug assembly 916 is biased upward by the spring 932 so that the seal 920 engages with the shoulder 930 of the piston 412. This prevents or blocks fluid from flowing between the central passage 914 (which is in fluid communication with the second chamber 418 via the radial passage 1010) and the hole 1004 (which is in fluid communication with the first chamber 416 via the axial passage 1008). In this way, when the valve 420 is in the closed position, the valve 420 blocks communication between the first chamber 416 and the second chamber 418 (the positive pressure chamber and the negative pressure chamber) to lock the upper tube 204 and the lower tube 202 in place relative to each other. In the example shown, the shoulder 930 is an annular protrusion extending (downward) from the surface of the piston 412. When the plug assembly 916 is in Fig.11 In the closed position shown, the shoulder 930 extends through the gap between the seal retainer 922 and the second plug portion 926 of the plug 918 to engage the seal 920. In this position, the seal 920 is axially clamped between the shoulder 930 and the first plug portion 928. This axial clamping forms a tight sealing interface.

[0103] Fig.11 is with Fig. 9 The same cross-sectional view shows the valve 420 in an open state. When it is desired to open the valve 420, the rider can press the seat post actuation button 120 ( Figure 1 ), which actuates the seat post to the drive unit 146 ( Figure 1 ) sends a signal. The drive unit 146 supplies power (from the battery) to the coil 936 of the solenoid 422. The first plug portion 928 acts as an armature. The electrical energy in the coil 936 generates a magnetic field that acts on the first plug portion 928 of the plug 918 and moves the plug 918 downward toward the core 938. The plug 918 moves downward, as shown in FIG. Fig.11 As shown, until the gap G is closed and the first plug portion 928 contacts the core 938. This downward movement compresses the spring 932 and moves the seal 920 away from the shoulder 930.

[0104] Fig.12 yes Fig.11 An enlarged view of the mark 1100. Fig.12 As shown, when the plug 918 of the plug assembly 916 is in the open position, the seal 920 is spaced apart from the shoulder 930. Therefore, as shown by the fluid flow line 1200, the fluid can flow through the fluid passage 1014 between the first chamber 416 and the second chamber 418. For example, the fluid can flow from the first chamber 416 through the axial channel 1008, through the hole 1004, through the shoulder 930, through the central channel 914 and through the radial channel 1010 to the second chamber 418 (or vice versa). In this way, the valve 420 opens and allows fluid to flow between the first chamber 416 and the second chamber 418 (positive pressure chamber and negative pressure chamber). This allows the upper tube 204 ( Figure 2 ) relative to the lower tube 202 ( Figure 2 ) moves to adjust the seat 112 ( Figure 1 ) height. When it is desired to close the valve 420, the solenoid 422 is deactivated or closed. In the absence of a magnetic field, the spring 932 biases the plug 918 so that the seal 920 engages the shoulder 930 and blocks fluid flow between the first chamber 416 and the second chamber 418, as shown in FIG. Fig. 9 and Fig.10 Thus, when the solenoid 422 is activated, the plug assembly 916 moves in a first direction (eg, downward) to open the valve 420 , and when the solenoid 422 is deactivated, the plug assembly 916 moves in a second direction (eg, upward) to close the valve 420 .

[0105] In some examples, once power is applied to the solenoid 422, the plug 918 takes only a relatively short time (e.g., 5 milliseconds) to close the gap G and contact the core 938. Once the plug 918 contacts the core 938, the magnetic force that holds the plug 918 against the core 938 is greatly increased, and thus less power is required to keep the plug 918 in contact with the core 938. Therefore, after a period of time, the drive unit 146 can reduce the power supplied to the solenoid 422 to keep the plug 918 in the down (open) position. For example, the drive unit 146 can reduce the power / power to about 25% of the original power / power value after about 10 milliseconds. In some examples, power is applied to keep the plug 918 against the core 938 as long as the rider holds the seat post actuation button 120. However, in some examples, the drive unit 146 can automatically cut off power after a specified length of time (e.g., 3 seconds) to prevent the solenoid 422 from overheating.

[0106] Return to reference Fig.10, when the valve 420 is closed, it can be seen that the pressure from the first chamber 416 (positive chamber) acts on the top and bottom of the plug 918, while the pressure from the second chamber 418 (negative chamber) acts on the surface of the plug 918 located between the seal 1006 and the seal 920. The seal 1006 and the third plug portion 924 of the plug 918 form or define a first sealing diameter D1, and the seal 920 and the shoulder 930 form or define a second sealing diameter D2. In this example, the second sealing diameter D2 is greater than the first sealing diameter D1. The annular area A (area A) is defined by the diameters D2 and D1, and its size is equal to the area of ​​a circle with diameter D2 minus the area of ​​a circle with diameter D1. Therefore, the net force exerted on the plug 918 by the first chamber 416 pushes the plug 918 upward and is equal to the product of the pressure and the annular area A. In other words, the pressure in the first chamber 416 biases the plug 918 to the closed position (corresponding to the closed state of the valve 420), and the pressure in the second chamber 418 biases the plug 918 to the open position (corresponding to the open state of the valve 420). Because the diameters D1 and D2 differ only slightly from each other, the annular area A is relatively small, and therefore the force generated by the air pressure acting on the plug 918 is small and generally smaller than the relatively large force exerted on the plug 918 by the spring 932. However, if the seat 112 ( Figure 1 ) (e.g., if a rider suspends the bicycle by the seat 112), the seat post 114 may extend slightly, thereby reducing the volume and increasing the pressure in the second chamber 418, and increasing the volume and reducing the pressure in the first chamber 416. In extreme cases, the net downward force exerted by the pressure on the plug 918 may overcome the biasing force of the spring 932, in which case the valve 420 may remain open and the seat post 114 may extend / elongate. Therefore, the size of the spring 932 may be appropriately set so that a reasonable upward force can be exerted on the seat 112 without extending the seat post 114.

[0107] Furthermore, the pressure differential acting on the plug 918 creates a biasing force that reduces the energy required by the solenoid 422 to move the plug 918 and / or to maintain the plug 918 in a different state. For example, when the plug 918 is in the closed position ( Figure 1 ), the first biasing force acts on the plug 918 in an upward direction, and when the plug 918 is in the open position ( Fig.12), a second biasing force acts on the plug 918 in an upward direction, the second biasing force being less than the first biasing force. In other words, the first biasing force acting on the plug 918 when the valve 420 is in the closed state is greater than the second biasing force acting on the plug 918 when the valve 420 is in the open state. Therefore, in some examples, the valve 420 can be opened by applying a first (higher) power to the solenoid 422 to initially open the valve 420, and then reducing the power to a second power to maintain the valve 420 in the open position. As a result, less energy is required to maintain the valve 420 in the open state. This reduces the power consumption of the solenoid 422.

[0108] refer to Fig. 9 , the interior of shaft 408 leads to the atmosphere. Therefore, the lower part of the inner cavity 935 of piston 412 leads to the atmosphere and is therefore at atmospheric pressure. Seal 942 separates inner cavity 935 between the upper part with pressurized fluid (e.g., above seal 942) and the lower part at atmospheric pressure (e.g., below seal 942). Therefore, in this example, wires 438, 440 and coil 936 are at atmospheric pressure. Therefore, wires 438, 440 and coil 936 are not arranged in the pressurized area of ​​the first chamber 416 and the second chamber 418 (positive chamber and negative chamber). As a result, wires 438, 440 and / or channels for wires do not need to be sealed to prevent leakage from chambers 416, 418 into the lower part of piston 412, which greatly reduces the sealing requirements of piston assembly 410. Moreover, the pressure of the air immediately above core 938 is communicated with the first chamber 416 (positive chamber). The vent channel 954 opens the bottom of the core 938 to the atmospheric pressure in the lower portion of the inner cavity 935, so that the pressure differential acting on the core 938 holds the core 938 in the bottom of the hole 948 of the spool 934. In particular, the pressure differential creates a net downward force on the core 938, thereby firmly holding the core 938 in a proper position against the bottom of the hole 948 in the spool 934. In this way, the core 938 does not need to be physically or mechanically coupled to the spool 934, which reduces assembly time and complexity. However, in other examples, the core 938 can be coupled to the spool 934 via threaded fasteners or other mechanical techniques.

[0109] Although in this illustration, the seat post 114 includes two wires 438, 440, in other examples, the seat post 114 may include only one wire (e.g., only the first wire 438). In some such examples, the shaft 408 may be constructed of a conductive material (e.g., copper, steel, etc.). In this way, the shaft 408 may operate as a second wire or electrical path. In other examples, the seat post 114 may include more than two wires.

[0110] Still reference Fig. 9, the air above the bobbin 934 is connected to the first chamber 416 (positive chamber), and the air below the bobbin 934 is at atmospheric pressure. Therefore, the pressure difference produces a net downward force on the bobbin 934, which firmly holds the bobbin 934 in the appropriate position against the shoulder 940 of the second body portion 902. In some cases, this downward force may be quite large. Therefore, in some examples, the bobbin 934 is made of a relatively strong material (such as anodized aluminum). In addition, the bobbin 934 can be anodized to electrically insulate it from the coil 936. Although the coil 936 can have its own insulation, the anodization on the bobbin 934 provides an additional protective layer to prevent electrical short circuits.

[0111] Fig.13 9 is a perspective view of the plug assembly 916, showing the plug 918, the seal 920 and the seal retainer 922. In some examples, the plug 918 and the seal retainer 922 are composed of a ferromagnetic material such as steel. In other examples, the plug 918 and / or the seal retainer 922 can be composed of other materials. In some examples, the seal 920 can be composed of a compliant material, such as nitrile rubber (e.g., Buna-N).

[0112] In some examples, seal retainer 922 has one or more vent features to help relieve pressure from beneath seal 920 . Fig.14 922 is a bottom perspective view of the seal retainer. Fig.14 As shown, the inner surface 1018 of the seal retainer 922 has four grooves or recesses 1400 that are equally spaced from each other. Fig.15 1400 is an enlarged cross-sectional view of the plug 918, the seal 920 and the seal retainer 922 taken along a plane intersecting the two grooves 1400. During the closing operation, when the seal 920 moves into contact with the shoulder 930 ( Fig. 9 ), the seal 920 may be slightly compressed, which creates pressure on the bottom side of the seal 920. When the seal 920 engages the shoulder 930, the groove 1400 releases pressure from under the seal 920. In particular, as Fig.15 As shown, the groove 1400 provides a path for any pressure buildup under the seal 920 to escape, thereby balancing the pressure above the seal 920 and below the seal 920. This is advantageous because excessive pressure buildup under the seal 920 may cause the seal 920 to be forcibly ejected or squeezed out of the space it is intended to be retained in. Although in this example, the seal retainer 922 has four grooves, in other examples, the seal retainer 922 may include one groove, two grooves, three grooves, five grooves, etc.

[0113] Fig.16is a perspective view of a piston assembly 410 coupled to shaft 408. Fig.16 The center channel 914, axial channels 1008, and radial channels 1010 are labeled in FIG. In this example, the first body portion 900 of the piston 412 has three axial channels 1008. The axial channels 1008 are equally spaced from each other and arranged circumferentially around the center channel 914. In other examples, the piston 412 may include more or fewer axial channels and / or the axial channels may be arranged in other configurations. In this example, the first body portion 900 of the piston 412 has four radial channels 1010 (two of which are in Fig.16 ). The radial passages 1010 are equally spaced apart from one another (e.g., 90° apart). In other examples, the piston 412 may have more or fewer radial passages and / or the radial passages may be arranged in other configurations.

[0114] like Fig.16 As shown, the second body portion 902 of the piston 412 has a plurality of grooves 1600 (eg, channels) extending axially along an outer surface 1602 of the second body portion 902. Figure 2 and Figure 4 When fully extended as shown, the volume of the second chamber 418 (negative chamber) approaches but does not reach zero. This is because a small amount of pressurized fluid remains in the radial passage 1010, the groove 1600, and in the gaps between the components. These volumes remain filled with pressurized air. When a rider sits on the saddle 112, the air in these volumes is used to bias the dropper seatpost to compress.

[0115] In some cases, when the rider sits on the seat 112 ( Figure 1 ) when the seat post 114( Figure 1 ) is slightly compressed (i.e., the upper tube 204 telescopes into the lower tube 202), causing the pressure in the first chamber 416 to increase and the pressure in the second chamber 418 to decrease until a new force balance is achieved, at which point the seat post 114 stops compressing. This slight compression can be beneficial to the rider, effectively acting as a suspension system that increases rider comfort in bumpy terrain. However, when the seat post 114 is fully extended, such as Figure 2 and Figure 4 As shown in , the rider generally wants to maximize pedaling efficiency, and therefore any seat post compression may be considered undesirable. As described above, when the seat post 114 is fully extended, the volume of the second chamber 418 approaches but does not reach zero. This is because there is still a small amount of fluid in the radial passage 1010, the groove 1600, and the gaps between the components. These volumes remain filled with pressurized air, which can expand to allow the seat post 114 to compress slightly when the rider sits on the saddle 112.

[0116] In some examples, to limit or prevent such compression in the fully extended position, the example seatpost 114 may include a quantity of an incompressible fluid, such as mineral oil, added to the second chamber 418. For example, Fig.17 is a cross-sectional view of the seat post 114 in a fully extended position, and Fig.18 is a cross-sectional view of the seat post 114 in a partially retracted position. Fig.18 As shown, the seat post 114 includes a certain amount / volume of incompressible fluid F in the upper tube 204. In particular, the certain amount / volume of incompressible fluid F is in the second chamber 418 (negative chamber) of the upper tube 204. In some examples, the incompressible fluid F is mineral oil. Air occupies the space above the surface S of the fluid F. When the seat post 114 is then fully extended, as shown in FIG. Fig.17 As shown, the volume of the second chamber 418 approaches but has not reached zero, as previously described. The volume of the second chamber 418 in this state is called the residual volume. The volume of the incompressible fluid F is greater than the residual volume, so the excess fluid F is forced through the valve 420 and moves into the first chamber 416. The upper surface S of the fluid F is now located in the first chamber 416 above the piston 412. In this state, the air in the second chamber 418 has been replaced by the fluid F. In other words, the incompressible fluid F fills the second chamber 418. In this way, there is almost no air in the second chamber 418 to enable the seat post 114 to be compressed. The only air pressure acting on the seat post is the air pressure in the first chamber 416, which serves to bias the seat post 114 to extend. Therefore, even if the rider sits on the seat 112 ( Figure 1 ), the seat post 114 will not compress when it is in the fully extended position. In some examples, the seat post 114 can still compress under extreme forces, but such forces are much higher than when riding a bicycle 100 ( Figure 1 ). In the example shown, the volume of fluid F is greater than the volume of the residual volume. However, in other examples, the volume of fluid F can be equal to or less than the residual volume. In such an example, when a rider sits on the seat 112, the seat post 114 can still compress a small amount, but the amount of compression is still less than if there is no fluid F in the system.

[0117] Also disclosed herein is an exemplary connector system that includes a connector for electrically connecting the seat post 114 to the drive unit 146 ( Figure 1 ) and / or connector assemblies for other electrical components on the bicycle 100. Fig.19An exemplary seat post 114 is shown that includes an exemplary first connector assembly 1900 (referred to herein as a seat post connector assembly). In this example, the seat post connector assembly 1900 is coupled to the bottom of the seat post 114. For example, the seat post connector assembly 1900 is coupled to the lower end 210 of the down tube 202. When the seat post 114 is installed on the bicycle 100, the seat post connector assembly 1900 can be connected to a mating connector assembly on the bicycle 100, thereby enabling power and / or signals to be transferred between the seat post 114 and the bicycle 100. Thus, the seat post connector assembly 1900 forms an electrical interface between the seat post 114 and the bicycle 100.

[0118] Fig. 20 1 is a perspective view of an exemplary seat post connector assembly 1900. In the example shown, the seat post connector assembly 1900 includes a first connector 2000, a second connector 2002, and a cable 2004 (which may include one or more wires) between the first connector 2000 and the second connector 2002. The first connector 2000 is configured to connect to the seat post 114 ( Figure 8 ) on the connector 808( Figure 8 ) and the second connector 2002 is configured to mate with a corresponding connector of a bicycle connector assembly, as disclosed in further detail herein. Cable 2004 electrically connects the first connector 2000 and the second connector 2002. Cable 2004 can be of any length. In this example, the first connector 2000 is a dual pin connector, referred to herein as dual pin connector 2000, and the second connector 2002 is a magnetic connector, referred to herein as the first magnetic connector 2002. The first magnetic connector 2002 includes one or more magnets, as disclosed in further detail herein, which help the first magnetic connector 2002 to mate with the bicycle 100 ( Figure 1 ) on the second magnetic connector.

[0119] Fig.21 2002 is an end view of the first magnetic connector 2002. Fig. 20 and Fig.21As shown, the first magnetic connector 2002 has a housing 2006. The housing 2006 includes a first housing portion 2008 and a second housing portion 2007, and the second housing portion 2007 has an end face 2008 with an opening 2010. In some examples, the housing 2006 is made of plastic or another non-conductive material. The first magnetic connector 2002 includes a first electrical contact and a second electrical contact, which are a first pin 2012 and a second pin 2014 in this example. The first pin 2012 and the second pin 2014 are at least partially disposed in the opening 2010. In some examples, the first pin 2012 and the second pin 2014 are spring-loaded pins, sometimes referred to as spring pins. As shown, the first pin 2012 is coaxial with the central axis 2016 of the first magnetic connector 2002, and the second pin 2014 is radially offset from the central axis 2016. As further disclosed in detail, this enables the first magnetic connector 2002 to mate with a corresponding magnetic connector at any angular orientation.

[0120] Fig. 22 1 is a cross-sectional view of an exemplary seat post connector assembly 1900. The seat post connector assembly 1900 includes a first conductor 2200 and a second conductor 2202 that form a cable 2004. The first conductor 2200 and the second conductor 2202 can have a jacket and / or insulation. The first conductor 2200 and the second conductor 2202 extend between the dual pin connector 2000 and the first magnetic connector 2002. The dual pin connector 2000 can be connected to the connector 808 on the bottom of the seat post 114. For example, Fig.23 yes Fig.19 An enlarged cross-sectional view of the label 1902. Fig.23 The dual pin connector 2000 is shown connected to the connector 808. When the dual pin connector 2000 is connected (e.g., inserted) into the connector 808, the first pin 812 makes an electrical connection between the first wires 438, 2200, and the second pin 814 makes an electrical connection between the second wires 440, 2202. As such, the first wires 438, 2200 are electrically connected, and the second wires 440, 2202 are electrically connected.

[0121] refer to Fig. 22 , the second housing portion 2007 has an end wall 2204 and an annular side wall 2206 extending from the peripheral edge of the end wall 2204. An opening 2010 is formed through the end wall 2204. The first housing portion 2208 is coupled to the second housing portion 2007. In this example, the second housing portion 2007 is threadedly coupled to the annular side wall 2206. The first housing portion 2208 and the second housing portion 2007 form a cavity 2210.

[0122] In the illustrated example, the first magnetic connector 2002 includes a first magnet 2212. The first magnet 2212 is in the housing 2006. In particular, the first magnet 2212 is disposed in a cavity 2210 formed by the first housing portion 2208 and the second housing portion 2007. In this example, the first magnet 2212 is disc-shaped or annular. The first pin 2012 and the second pin 2014 extend through the inner diameter of the first magnet 2212. In some examples, the magnet 2212 is a neodymium magnet. The first magnet 2212 is magnetized along its thickness. Therefore, one of the poles is located at the bottom surface of the first magnet 2212, and the other pole is located at the top surface of the first magnet 2212.

[0123] In the example shown, the first magnet 2212 is disposed along the inner surface of the end wall 2204. The end wall 2204 has a thickness T1. Thus, the magnet 2212 is spaced a distance T1 from the outer surface or end face 2008 of the first magnetic connector 2002. However, in other examples, one or more portions or layers may be disposed between the first magnet 2212 and the end wall 2204 such that the distance between the first magnet 2212 and the end face 2008 is greater than T1.

[0124] The first pin 2012 and the second pin 2014 extend through the first magnet 2212. Fig. 22 In the example shown, the first magnetic connector 2002 includes a retainer 2214 in the cavity 2210. The retainer 2214 retains or mounts the first pin 2012 and the second pin 2014. In this example, the first pin 2012 and the second pin 2014 are disposed in (e.g., pressed into) corresponding channels 2213, 2215 in the retainer 2214. The first wire 2200 and the second wire 2202 extend through the channel 2216 in the first housing portion 2208 and into the cavity 2210 and are electrically connected (e.g., crimped, soldered) to corresponding pins in the first pin 2012 and the second pin 2014. The retainer 2214 is radially positioned by a boss 2218 that fits into the inner diameter of the first magnet 2212. The first pin 2012 and the second pin 2014 are spaced apart from (e.g., not in contact with) the first magnet 2212. In some examples, the retainer 2214 is constructed of plastic (such as nylon or acetal). Thus, the first pin 2012 and the second pin 2014 are electrically isolated or separated from the first magnet 2212 by the retainer 2214. In the example shown, the retainer 2214 has a flange 2220. Fig. 22 As shown, when the first housing portion 2208 is screwed into the second housing portion 2007, the flange 2220 and the magnet 2212 are clamped between the edge 2222 of the first housing portion 2208 and the end wall 2204 of the second housing portion 2007. In this way, the retainer 2214 and the first magnet 2212 are firmly held in the cavity 2210 of the first magnetic connector 2002.

[0125] Fig.24 2 is a perspective view of an exemplary second connector assembly 2400, referred to herein as bicycle connector assembly 2400. The bicycle connector assembly 2400 can be coupled to the drive unit 146 to couple the seat post 114 ( Fig.19 ) of the seat post connector assembly 1900( Fig.19 ) and the drive unit 146 ( Figure 1 ) form an interface or connection between. In the example shown, the bicycle connector assembly 2400 includes a first connector 2402, a second connector 2404, and a cable 2406 (which may include one or more wires) between the first connector 2402 and the second connector 2404. The first connector 2402 is configured to mate with a corresponding connector on the drive unit 146, and the second connector 2404 is configured to mate with the first magnetic connector 2002 of the seat post connector assembly 1900. The cable 2406 electrically connects the first connector 2402 and the second connector 2404. The cable 2406 can be of any length. In this example, the first connector 2402 is a two-pin connector, but in other examples it can be implemented by another type of electrical connector. The second connector 2404 is a magnetic connector, referred to herein as the second magnetic connector 2404. As further disclosed in detail herein, the second magnetic connector 2404 mates with the first magnetic connector 2002.

[0126] exist Fig.24 In the example shown, the second magnetic connector 2404 has a housing 2408 having an end face 2410. The housing 2408 has an opening 2411 extending into the end face 2410. In some examples, the housing 2408 is made of plastic or another non-conductive material. The second magnetic connector 2404 includes a third electrical contact 2412 and a fourth electrical contact 2414. The third electrical contact 2412 and the fourth electrical contact 2414 are at least partially disposed in the opening 2411 and extend outward from the opening 2411. In this example, the fourth electrical contact 2414 is annular, and the third electrical contact 2414 is pin-shaped and disposed within (e.g., coaxial with) the fourth electrical contact 2414. The third electrical contact 2412 and the fourth electrical contact 2414 may also be referred to as an inner electrical contact and an outer electrical contact. The third electrical contact 2412 and the fourth electrical contact 2414 are coaxial with the central axis 2416 of the magnetic connector 2002. In the example shown, the housing 2408 has a flange 2418 with an opening 2420 that can receive a threaded fastener (e.g., a bolt) to couple the second magnetic connector 2404 to the bicycle 100 ( Figure 1 ).

[0127] Fig.252 is a cross-sectional view of a portion of a second magnetic connector 2404 and a cable 2406 of a bicycle connector assembly 2400. The bicycle connector assembly 2400 includes a first conductor 2500 and a second conductor 2502 forming the cable 2406. The first conductor 2500 and the second conductor 2502 may have a jacket and / or be insulated. The first conductor 2200 and the second conductor 2202 are disposed in the first connector 2402 ( Fig.24 ) and extends between the second magnetic connector 2404.

[0128] exist Fig.25 In the example shown, the housing 2408 of the second magnetic connector 2404 has an end wall 2504 and an annular side wall 2506 extending from the peripheral edge of the end wall 2504. An opening 2411 is formed through the end wall 2504. The second magnetic connector 2404 includes a cover 2508 coupled to the housing 2408. In this example, the cover 2508 is threadedly coupled to the annular side wall 2506. The housing 2408 and the cover 2508 form a cavity 2510.

[0129] In the illustrated example, the second magnetic connector 2404 includes a second magnet 2512 located in the housing 2408. Specifically, the second magnet 2512 is disposed in a cavity 2510 formed by the housing 2408 and the cover 2508. The magnet 2512 is disc-shaped or annular. In some examples, the magnet 2512 is a neodymium magnet. Similar to the first magnet 2212 ( Fig. 22 ), the second magnet 2512 is magnetized along its thickness so that one of the poles is on the bottom surface of the second magnet 2512 and the other pole is on the top surface of the second magnet 2512. In the example shown, the second magnet 2512 is disposed along the inner surface of the end wall 2504. The end wall 2504 has a thickness T2. As such, the second magnet 2512 is spaced apart from the end surface 2410 of the second magnetic connector 2404 by a distance T2. However, in other examples, one or more portions or layers may be disposed between the second magnet 2512 and the end wall 2504 so that the distance between the second magnet 2512 and the end surface 2410 is greater than T2.

[0130] like Fig.25As shown, the fourth electrical contact 2414 is disposed in the cavity 2510. A portion of the fourth electrical contact 2414 is radially positioned by the inner diameter of the second magnet 2512. The fourth electrical contact 2414 extends through the opening 2411 and beyond the end surface 2410. In the example shown, the second magnetic connector 2404 includes a cylindrical insulator 2516 disposed (e.g., press-fit) in a central channel 2518 in the fourth electrical contact 2414. The cylindrical insulator 2516 is composed of an electrically insulating material. The third electrical contact 2412 in the shape of a pin is disposed (e.g., press-fit) in the cylindrical insulator 2516. In this way, the third electrical contact 2412, the fourth electrical contact 2414 and the cylindrical insulator 2516 are all connected together as a unit. The third electrical contact 2412 and the fourth electrical contact 2414 are composed of a conductive material (e.g., copper). The cylindrical insulator 2516 is composed of a non-conductive material. For example, in some examples, the cylindrical insulator 2516 is constructed of plastic (such as nylon or acetal). In this way, the cylindrical insulator 2516 electrically separates or isolates the third electrical contact 2412 and the fourth electrical contact 2414.

[0131] In the example shown, the fourth electrical contact 2414 has a flange 2520. When the cover 2508 is screwed into the housing 2408, the flange 2520 and the magnet 2512 are clamped between the edge 2522 of the cover 2508 and the end wall 2504 of the housing 2408. The wires 2500, 2502 extend through a channel 2524 in the cover 2508. One of the wires 2500, 2502 is electrically connected (e.g., crimped, soldered) to the third electrical contact 2412, and the other wire 2500, 2502 is electrically connected to the fourth electrical contact 2414. In the example shown, the channel 2524 (and the space between the wires 2500, 2502) is filled with a potting compound 2526. The potting compound 2526 holds the wires 2500, 2502 in place and provides strain relief for the wires 2500, 2502.

[0132] FIG. 26A to FIG. 26C An exemplary sequence or process of connecting the seat post connector assembly 1900 and the bicycle connector assembly 2400 is shown. The seat post connector assembly 1900 and the bicycle connector assembly 2400 may be referred to as a connector system 2600. The connector system 2600 may be used to electrically connect the seat post 114 to the bicycle 100. Fig.26AAs shown, when the seat post connector assembly 1900 is initially brought into proximity with the bicycle connector assembly 2400, they may not be well aligned with each other. However, the magnetic poles of the first magnet 2212 and the second magnet 2512 of the first magnetic connector 2002 and the second magnetic connector 2404 are oriented so that they attract each other. The magnetic field lines are represented by dashed lines in the figure. The force generated by the magnetic field tends to move the magnets 2212, 2512, and therefore the first magnetic connector 2002 and the second magnetic connector 2404, into alignment with each other, as shown. Fig.26B In this position, the first magnetic connector 2002 and the second magnetic connector 2404 are axially aligned. Then, as shown in FIG. Figure 6 As shown, when the first magnetic connector 2002 and the second magnetic connector 2404 are in contact with each other, they are already well aligned. Once the first magnetic connector 2002 and the second magnetic connector 2404 are in contact, the magnetic field holds the first magnetic connector 2002 and the second magnetic connector 2404 together.

[0133] Fig. 27 yes Fig.26C The enlarged view of the label 2602 shows the mating of the first magnetic connector 2002 and the second magnetic connector 2404. Fig. 27 As shown, the end face 2008 of the first magnetic connector 2002 engages the end face 2410 of the second magnetic connector 2404. The magnetic force between the two magnets 2212, 2512 holds the magnetic connectors together until sufficient force is applied to separate the first magnetic connector 2002 and the second magnetic connector 2402. A portion of the fourth electrical contact 2414 extends into the opening 2010 in the end wall 2204 of the first magnetic connector 2002, which axially aligns the first magnetic connector 2002 and the second magnetic connector 2402. Fig. 27 As shown, the first pin 2012 of the first magnetic connector 2002 contacts the third electrical contact 2412 of the second magnetic connector 2404, and the second pin 2014 of the first magnetic connector 2002 contacts the fourth electrical contact 2414 of the second magnetic connector 2044. In this way, the pins 2012, 2014 and the electrical contacts 2412, 2414 are in electrical contact and form an electrical path between the corresponding wires 2500, 2502, 2200, 2202. In this way, power can be drawn from the first connector 2402 ( Fig.24 ), through wires 2500, 2502, through electrical contacts 2412, 2414, through pins 2012, 2014, and through wires 2200, 2202 ( Fig. 22 ) flows to the two-pin connector 2000 ( Fig. 20). Therefore, the magnetic attraction between the first magnet 2212 and the second magnet 2512 holds the first magnetic connector 2002 and the second magnetic connector 2404 so that the end face 2008 contacts the end face 2410 and the first pin 2012 and the second pin 2014 contact the corresponding third electrical contact 2412 and the fourth electrical contact 2414.

[0134] In some examples, the pins 2012, 2014 are spring-loaded pins. Therefore, when contacting the third electrical contact 2412 and the fourth electrical contact 2414, the pins 2012, 2014 can be slightly compressed. Because the fourth electrical contact 2414 is annular, the second pin 2014 contacts the fourth electrical contact 2414 at any angular orientation. Therefore, unlike the known two-pin connectors that must be fully aligned in one orientation, the exemplary first magnetic connector 2002 and the second magnetic connector 2404 can be connected at any angular orientation. Although in this example, the two pins 2012, 2014 are on the first magnetic connector 2002, and the electrical contacts 2412, 2414 are on the second magnetic connector 2404, in other examples, the pins and electrical contacts can be swapped. In the example shown, the first magnet 2212 and the second magnet 2512 are annular magnets. However, in other examples, the first magnet 2212 and the second magnet 2512 can be magnets of other shapes (eg, rectangular). In addition, the first magnetic connector 2002 and the second magnetic connector 2404 can include multiple magnets (eg, two, three, four, etc.).

[0135] It will be appreciated that the magnets 2212, 2512 do not function as electrical contacts and do not contact each other, as is typically seen in known magnetic connectors. This is advantageous because if the magnets 2212, 2512 function as electrical contacts and therefore need to contact each other, any foreign grit or debris (ferrous or non-ferrous) could easily get between the magnets 2212, 2512 and prevent proper contact between them. In contrast, Fig. 27 The example shown uses pins 2012, 2014 to make electrical contact. The pins 2012, 2014 form point contact (as opposed to surface contact of the faces of the magnets) and are less likely to be contaminated by foreign debris. Furthermore, since the pins 2012, 2014 themselves are not magnetic, the pins 2012, 2014 are less likely to attract ferrous debris in the first place.

[0136] Generally, if the magnets 2212, 2512 are not strong enough, they may not generate a strong enough magnetic field to align the magnetic connectors 2002, 2404. On the other hand, if the magnets 2212, 2512 are too strong and are allowed to contact each other, the magnetic force holding the magnets 2212, 2512 together may be so great that the wires of the connector may be overstressed when the rider removes the seat post 114 from the bicycle frame 102. Therefore, Fig. 27 The example configuration shown is advantageous because the magnets 2212, 2512 do not physically contact each other. Instead, the magnets 2512, 2512 are spaced apart by the end walls 2204, 2504 of the first magnetic connector 2002 and the second magnetic connector 2404. In this way, the magnets 2212, 2512 can be made strong enough to align substantially misaligned connectors, and the magnetic force holding the connectors 2002, 2404 together is low enough that the seat post 114 can be easily removed from the bicycle frame 102 without overstressing the wires of the first magnetic connector 2002 and the second magnetic connector 2404.

[0137] Fig.28 An exemplary seal 2800 that can be implemented in the second magnetic connector 2402 is shown. The seal 2800 is coupled to the housing 2408 and disposed in the opening 2411. The seal 2800 can be constructed of an elastomeric material such as rubber. The seal 2800 can protrude outwardly from the end face 2410. When the first magnetic connector 2002 and the second magnetic connector 2404 are connected, the seal 2800 engages the end face 2410. The seal 2800 forms a sealing interface between the end faces 2008, 2410 that prevents or limits water or other debris from contaminating the electrical connection.

[0138] Figure 29 to Figure 31 An exemplary sequence or process for installing the seat post 114 having the seat post connector assembly 1900 on the bicycle 100 and electrically connecting to the drive unit 146 is shown. Fig.29 As shown, the seat post connector assembly 1900 is first inserted into the seat tube 116 of the frame 102, and then the seat post 114 is inserted. The seat tube 116 is hollow. Fig.29As shown in the callouts in , the bicycle connector assembly 2400 is installed in the frame 102. In some examples, the bicycle connector assembly 2400 is installed on the bicycle 100 during the manufacture of the bicycle 100. In other examples, the bicycle connector assembly 2400 can be an aftermarket part that can be installed by a user. The first connector 2402 is connected to (e.g., plugs into) a mating connector 2900 (e.g., a two-pin connector) of the drive unit 146. The second magnetic connector 2404 is coupled to the bottom wall 2902 of the seat tube 116. In particular, in this example, the second magnetic connector 2404 is disposed in an opening 2904 in the bottom wall 2902 and is secured to the seat tube 116 via threaded fasteners 2906 (one of which is in Fig.29 ) is coupled to the bottom wall 2902. In some examples, the bottom wall 2902 has a drain hole 2908 through which water and other debris that enter the seat tube 116 can exit or drain.

[0139] Fig.30 The seat post 114 is shown with the seat post connector assembly 1900 further inserted into the seat tube 116 of the frame 102. The first magnetic connector 2002 is shown proximate to the second magnetic connector 2404, but is not aligned (e.g., axially aligned) with the second magnetic connector 2404. The magnets 2212, 2512 ( Fig. 22 and Fig.25 ) is used to align the magnets 2212, 2512 and thus the first magnetic connector 2002 and the second magnetic connector 2404 with each other (e.g., axially align). When the seat post 114 is inserted far enough into the seat tube 116, as shown in phantom. Fig.31 As shown, the first magnetic connector 2002 and the second magnetic connector 2404 are in contact with each other and are properly aligned, such as in combination. Fig. 27 As explained above. Thus, the first magnetic connector 2002 and the second magnetic connector 2404 are self-aligning and self-coupling. When the first magnetic connector 2002 and the second magnetic connector 2402 are mated, an electrical connection is made between the drive unit 146 and the seat post 114. Thus, power can be drawn from the battery 144 ( Figure 1 ) flows through the drive unit 146, through the bicycle connector assembly 2400, through the seat post connector assembly 1900 and to the seat post 114. As described above, the drive unit 146 can apply power to activate the solenoid 422 ( Figure 1 ) to open valve 420 or stop supplying power to close valve 420.

[0140] At this point, the rider can tighten the clamp 118 to secure the seat post 114 in place relative to the frame 102, or if a lower seating position is desired, the rider can insert the seat post 114 further into the seat tube 116, such as Fig.32 As the seat post 114 is further inserted into the seat tube 116, the cable 2004 (conductors 2200, 2202 ( Fig. 22 The excess length of the seat tube 116 can be simply gathered in the lower part of the seat tube 116, such as Fig.32 Thus, the system can accommodate considerable variations in the insertion depth of the seat post 114.

[0141] To remove the seat post 114, the rider may loosen the clamp 118 and may then simply pull the seat post 114 out of the seat tube 116. When a sufficient amount of force is applied, the magnetic connection between the first magnetic connector 2002 and the second magnetic connector 2404 is broken and the first magnetic connector 2002 is disconnected from the second magnetic connector 2404. As described above, the first magnet 2212 and the second magnet 2512 are not in direct contact with each other. This makes it easier to disconnect the first magnetic connector 2002 and the second magnetic connector 2402 without causing excessive force on the wires.

[0142] In some examples, bicycle 100 may include one or more features to help guide alignment of first magnetic connector 2002 with second magnetic connector 2404. For example, Fig.33 An exemplary guide 3300 is shown coupled to the second magnetic connector 2404. In some examples, the guide 3300 is coupled to the second magnetic connector 2404 via an interference fit. In other examples, the guide 3300 can be coupled to the magnetic connector via other mechanisms (e.g., threaded fasteners). The guide 3300 has a first set of arms 3302 radially spaced about the second magnetic connector 2404 (one of which is in the Fig.33 The guide 3300 also has a second set of arms 3304 (one of which is located at Fig.33 (marked in). Fig.34The second magnetic connector 2404 and guide 3300 are shown mounted in the lower end of the seat tube 116. The first set of arms 3302 and the second set of arms 3304 are pressed against and conform to the inner surface of the seat tube 116. As shown, the second set of arms 3304 forms a funnel, which helps guide the first magnetic connector 2002 to align with the second magnetic connector 2404. In addition, in this example, the second magnetic connector 2404 does not have a mounting flange for attachment to the bottom wall 2902. Instead, the flexure of the arms 3302, 3304 against the inner surface of the seat tube 116 holds the guide 3300 and the second magnetic connector 2404 in place. Thus, the arms 3302, 3304 perform two functions: they help guide the first magnetic connector 2002 toward the second magnetic connector 2404, and they hold the guide 3300 and the second magnetic connector 2404 in place relative to the frame 102 (which also resists pull-out when the seat post 114 is removed from the seat tube 116).

[0143] Fig.35 An alternative bicycle frame design is shown in which the lower section of the seat tube 116 is shaped to guide the first magnetic connector 2002 to the second magnetic connector 2404 when the seat post 114 is inserted into the seat tube 116 of the frame 102. In particular, in this example, the lower section of the seat tube 116 is funnel-shaped (e.g., with a reduced inner diameter) with the second magnetic connector 2404 located at the bottom thereof.

[0144] FIG. 36A to FIG. 36C An exemplary sequence or process is shown for removing ferrous debris that may accidentally fall into the seat tube 116. For example, Fig.36A A piece of ferrous debris 3600 is shown that has fallen into the seat tube 116 and is held by magnetic force on the second magnetic connector 2404. The presence of such ferrous debris 3600 may prevent proper electrical connection between the first magnetic connector 2002 and the second magnetic connector 2404. Fig.36B When the first magnetic connector 2002 is inserted into the seat tube 116, the first magnetic connector 2002 is magnetically attracted to the second magnetic connector 2404 and contacts the ferrous debris 3600. Fig. 22 and Fig.25, magnet 2212 is spaced a first distance T1 from end face 2008 of first magnetic connector 2002, and magnet 2512 is spaced a second distance T2 from end face 2410 of second magnetic connector 2404. Second distance T2 is greater than first distance T1. Therefore, ferrous debris 3600 is closer to magnet 2212 in first magnetic connector 2002 than second magnet 2512 in second magnetic connector 2404. As a result, the magnetic force for holding ferrous debris 3600 to first magnetic connector 2002 is greater than the magnetic force for holding ferrous debris 3600 to second magnetic connector 2404. Therefore, when first magnetic connector 2002 is pulled from seat tube 116, as shown in FIG. Fig.36C As shown, the ferrous debris 3600 is removed along with the first magnetic connector 2002, and the rider can simply discard the ferrous debris 3600. In some examples, T1 is less than 1.6 mm, and T2 is greater than 2.4 mm. However, in other examples, other distances may be used.

[0145] In some examples, the first magnet 2212 is a larger or stronger magnet (e.g., a more powerful magnet) than the second magnet 2512 in the second magnetic connector 2404. As a result, when the ferrous debris 3600 is removed from the seat tube 116, the ferrous debris 3600 adheres to the first magnetic connector 2002. In this way, any ferrous debris that falls into the seat tube 116 and attaches to the second magnetic connector 2404 can be removed. In such examples, the distances T1 and T2 can be the same, or can be different as disclosed above.

[0146] Although the exemplary connector system 2600 is described in conjunction with a seatpost 114 having an internal solenoid-actuated valve, the exemplary connector system 2600 may be implemented in conjunction with other types of seatposts, such as seatposts having internal motor-actuated valves, seatposts having rotary valves, seatposts having actuators (e.g., motors, solenoids) external to the internal chamber, etc. Thus, the exemplary connector system 2600 is not limited to being implemented in conjunction with a seatpost 114 having an internal solenoid-actuated valve. Figures 2 to 18 The disclosed seat post 114 is used in conjunction with the disclosed seat post 114.

[0147] As combined Figure 1 As disclosed, in some examples, the drive unit 146 includes a controller component that can be used to activate the seat post 114 based on a wireless signal from the seat post actuator 119. However, in other examples, a separate control device or command module can be used to control the power to the seat post 114. Fig.37 An exemplary wiring harness 3700 (which may also be referred to as a connector assembly, wiring assembly, or wiring harness) implemented in conjunction with an exemplary seat post 114 is shown. The exemplary wiring harness 3700 may be used to electrically couple the seat post 114 to the bicycle 100 ( Figure 1) on the power supply source / power supply, and also includes a device for activating and driving unit 146 ( Figure 1 ) separate control device of the seat post 114. This enables the seat post 114 to be used with a bicycle that does not have a seat post control component integrated into the drive unit 146. The exemplary seat post 114 and wiring harness 3700 can be considered as a device or component that can be sold together as a kit or as a separate component.

[0148] exist Fig.37 In the example shown, the wiring harness 3700 includes a first connector 3702, a second connector 3704, a control device 3706, and a cable 3708 between the first connector 3702, the second connector 3704, and the control device 3706. The cable 3708 may include one or more wires covered by a sheath (disclosed in further detail herein) that electrically couple the first connector 3702, the second connector 3704, and the control device 3706. In this example, the second connector 3704 and the control device 3706 are coupled at opposite ends of the cable 3708, and the first connector 3702 is coupled to the cable 3708 between the second connector 3704 and the control device 3706. The first connector 3702 is coupled to the first connector 2000 (disclosed above) disclosed above. Fig. 20 ) and is configured to be connected to the connector 808 on the seat post 114. The second connector 3704 is the same as the second connector 2002 ( Fig. 20 ) and is configured to be connected to a second connector 2404 ( Fig.24 and Fig.29 ) to connect to the battery 144 ( Figure 1 ) receives power. Thus, any exemplary aspects disclosed in connection with the second connector 2002 described above may also apply to the second connector 3704. When the first connector 3702 is connected to the connector 808 on the seat post 114 and the second connector 3704 is connected to the second connector 2404 on the bicycle 100, the cable 3708 electrically couples the seat post 114, the control device 3706, and the battery 144. In other examples, the first connector and / or the second connector may be eliminated by extending the cable into the interior of the seat post and / or the interior of the drive unit and connecting the cable directly to one of the internal actuator and / or the drive unit and the power source.

[0149] The control device 3706 is configured to be based on the seat rod actuator 119 ( Figure 1 ) to activate the seat post 114. In particular, the control device 3706 controls the internal actuator 422 ( Figure 4 ) (e.g., a solenoid or motor) to activate actuator 422 to open or close valve 420 ( Figure 4 ). In the example shown, the wiring harness 3700 also includes a fuse 3710 coupled to the cable 3708 to prevent excessive current.

[0150] In the example shown, the control device 3706 is external to the seat post 114. Thus, the control device 3706 is separate or remote from the seat post 114. The control device 3706 is also connected to the drive unit 146 ( Figure 1 ) is separate from the controller of the seat post 114. In other words, the control device 3706 is a separate component from the seat post 114. In the example shown, the control device 3706 includes a housing 3712 that surrounds or encapsulates the combined Fig.39 The housing 3712 may be constructed of, for example, rubber or plastic. In the example shown, the control 3706 includes a user operable device 3714 (a button 3714 in this example) and an indicator 3716 (a light 3716 in this example) that are located on one side of the housing 3712 or visible through a window in the housing 3712 and are therefore visible and accessible to the rider or user. The rider may press the button 3714 to engage the control 3706 with the seat post actuator 119 ( Figure 1 ) pairing, and light 3716 can be used to indicate the status of control device 3706 (e.g., not paired, pairing, paired). In other examples, the user-operable member can be a joystick, a dial, a toggle switch, a touch screen, etc. The indicator can be a light emitting diode (LED), an audible device, or other device that provides a status indication of the control device to the user.

[0151] Fig.38is a partial cross-sectional view showing an exemplary seat post 114 with an exemplary wiring harness 3700 installed in the frame 102 of the exemplary bicycle 100. The seat post 114 is installed in the seat tube 116, and the wiring harness 3700 is disposed at the lower end of the seat tube 116 and in the down tube 3800 of the frame 102. As described above, the bicycle 100 includes a drive unit 146, which includes one or more motors and gears configured and arranged to assist a rider in pedaling the bicycle 100. The drive unit 146 receives its power from the battery 144. In the illustrated example, the second connector 2404 is fixed to the bicycle frame 102 and electrically connected to the drive unit 146. The second connector 3704 of the wiring harness 3700 is connected to the second connector 2404. As disclosed herein, the second connector 3704 and the second connector 2404 (power connector) may include permanent magnets and / or ferromagnetic materials to form a magnetic coupling to maintain their connection. Thus, in this example, the control device 3706 receives power from the battery 144 through the drive unit 146. However, in other examples, the second connector 2404 can be directly connected to the battery 144 and bypass the drive unit 146. Thus, the control device 3706 can receive power directly or indirectly from the battery 144. As further disclosed in detail herein, the control device 3706 controls the flow of power to the seat post 114 to activate the actuator 422 ( Figure 4 ) (e.g., a solenoid or a motor).

[0152] In the example shown, the control device 3706 is positioned on the exterior of the frame 102. In particular, the down tube 3800 of the frame 102 has an opening 3802. A portion of the cable 3708 of the harness 3700 is routed through the down tube 3800 and extends through the opening 3802. This enables the majority of the cable 3708 to be hidden in the frame 102 while still allowing the control device 3706 to be disposed on the exterior of the frame 102 where it is accessible to the rider (e.g., so the rider can access the pairing button and LED light). The seat post actuator 119 is mounted on the handlebar 122. The seat post actuator 119 includes a seat post actuation button 120 that can be pressed by the rider, a battery (e.g., a button cell) for power, and a wireless communication device including a radio transmitter. The wireless communication device may include a transceiver, a transmitter-receiver, or any device that is capable of transmitting and / or receiving wireless communication signals, alone or in combination. When the seat post actuation button 120 is pressed, the radio sends a signal to the control device 3706 to activate the internal actuator 422 in the seat post 114 ( Figure 4). In the example shown, the control device 3706 is positioned relatively close to the handlebar 122, and therefore relatively close to the seat post actuator 119. This ensures reliable wireless signal communication between the seat post actuator 119 and the control device 3706. However, in other examples, the control device 3706 can be positioned at other locations on the bicycle 100, such as on the seat tube 116, the top tube, the down tube, the seat stays, the chain stays, or even on any other component, accessory, or portion of the bicycle 100.

[0153] Fig.39 3706. In the example shown, the control device 3706 includes a microcontroller 3900, a wireless communication device 3902, a vibration sensor 3904, a switch 3906, a voltage detector 3908, a current detector 3910, a button 3714, and a light 3716. The components 3902-3910, 3714, 3716 are electrically coupled to the microcontroller 3900 (e.g., via one or more wires, traces, etc.). In some examples, one or more of the components 3900-3910, 3714, 3716 are disposed and / or otherwise fabricated on a common printed circuit substrate (PCB) 3912. The PCB 3724 and one or more of the components 3900-3910, 3714, 3716 are disposed in a housing 3712 ( Fig.37 ). The wireless communication device 3902 includes at least a wireless receiver. The wireless communication device 3902 may include a transceiver, a transmitter-receiver, or any device that is capable of transmitting and / or receiving wireless communication signals, alone or in combination.

[0154] In some examples, the microcontroller 3900 includes a processor (e.g., a central processor unit (CPU)) and a memory with instructions that are executed by the processor to analyze data / signals, control one or more components, and / or otherwise perform the operations disclosed herein in conjunction with the control device 3706. Additionally or alternatively, the microcontroller 3900 can be implemented by other types of programmable circuits that are constructed and / or configured to perform the example operations disclosed herein, such as an application specific integrated circuit (ASIC) and / or a field programmable gate array (FPGA). In other examples, the microcontroller 3900 can be implemented by other types of processor circuits defined herein.

[0155] The button 3714 of the control device 3706 can be used to wirelessly pair the control device 3706 to the handlebar 122 ( Fig.38 ) on the seat post actuator 119 ( Fig.38). For example, the rider may press and hold button 3714, which causes the microcontroller 3900 to control the wireless communication device 3902 to pair with the seat post actuator 119. Light 3716 may be implemented by any type of light, such as an LED. The microcontroller 3900 activates light 3716 based on the condition or state of the control device 3706. For example, light 3716 may be used to indicate that the control device 3706 is ready to pair and / or that the control device 3706 is successfully paired with the seat post actuator 119. For example, light 3716 may flash a certain sequence and / or color when the control device 3706 is ready to pair, and may flash a different sequence and / or color when the control device 3706 is successfully paired. Button 3714 may also be used to actuate the seat post 114. The seat post actuator 119 may also include buttons and lights used during the pairing process.

[0156] Voltage detector 3908 detects the supply voltage (from battery 144) to control device 3706. Microcontroller 3900 can modulate the internal actuator 422 ( Figure 4 ) (e.g., a solenoid or a motor) such that the same actuation is maintained over various supply voltages. The current detector 3910 detects the current entering the actuator 422 during actuation. The microcontroller 3900 can modulate the power / power to the actuator 422 based on the measured current. For example, if the actuator 422 is implemented as a solenoid, the microcontroller 3900 can detect that the solenoid has been actuated based on the measured current and then reduce the power applied to the solenoid for the duration that the user presses the button. By reducing the power / power to the solenoid after the initial actuation of the solenoid, heat in the solenoid is reduced.

[0157] The microcontroller 3900 controls the switch 3906. The switch 3906 is configured to connect one or more wires to allow power to pass from the second connector 3704 to the first connector 3702 to open the valve 420 ( Figure 4 ) and allows the seat post 114 to expand / contract as disclosed herein. In some examples, the switch 3906 is implemented by a metal oxide semiconductor field effect transistor (MOSFET) or a MOSFET H-bridge. In other examples, other types of switches may be implemented. As an example operation, in order to move the seat 112 up or down ( Figure 1 ), the rider presses the seat post actuation button 120 ( Fig.38 ). Seat rod actuator 119 ( Fig.38) transmits a wireless signal that is received by the wireless communication device 3902 of the control device 3706. In response to receiving the signal, the microcontroller 3900 activates the switch 3906 to allow power to flow through the wiring harness 3700 to the first connector 3702, and thus to the seat post 114. As described above, the power activates the internal actuator 422 (e.g., a solenoid or motor) to open the valve 420 ( Figure 4 ). With the valve 420 now open, the rider can adjust the position of the seat 112 up or down as desired. When the rider has positioned the seat 112 as desired, the rider releases the seat post actuation button 120. The seat post actuator 119 then transmits another wireless signal indicating the button release that is received by the wireless communication device 3902 of the control device 3706. The microcontroller 3900 then controls the switch 3906 to turn off or stop power to the seat post 114 (in the example where the actuator 422 is a solenoid), or to reverse power the actuator 422 (in the example where the actuator 422 is a motor), thereby closing the valve 420 inside the seat post 114. With the valve 420 now closed, the seat 112 remains in the desired position. In another example, power to the seat post can be cut off when the wireless communication device of the control device no longer receives a command signal from the seat post actuator for a specific duration.

[0158] As disclosed herein, in some examples, control valve 420 ( Figure 4 ) of the actuator 422 ( Figure 4 ) may be implemented by a solenoid 422. When the solenoid 422 is activated, the valve 420 opens to enable the seat post 114 to expand or contract, and when the solenoid 422 is deactivated, the valve 420 moves back to a closed position (e.g., via a spring) to lock the seat post 114 in place. Fig.40 A first example wiring schematic of a wiring harness 3700 that may be used with a solenoid operated valve in a seat post 114 is shown. Fig.40 As shown, the cable 3708 includes a ground conductor 4000 electrically coupled between the first connector 3702, the second connector 3704, and the control device 3706. Thus, in this example, the three components share the same ground. The cable 3708 includes a first power conductor 4002 electrically coupled between the second connector 3704 and the control device 3706 and a second power conductor 4004 electrically coupled between the control device 3706 and the first connector 3702. To activate the solenoid 422 and open the valve 420, the control device 3706 sends power to the seat post 114. For example, the microcontroller 3900 ( Fig.39) can activate the switch 3906 to a first state to electrically couple the first power conductor 4002 to the second power conductor 4004, thereby providing power to activate the solenoid 422 in the seat post 114. In some examples, after initially activating the solenoid 422, the microcontroller 3900 reduces the amount of power / electricity to the solenoid 422 (because once activated, less power / electricity is required to keep the solenoid-operated valve open). To close the valve 420, the control device 3706 stops sending power to the seat post 114. For example, the microcontroller 3900 can activate the switch 3906 to a second state to electrically disconnect the first power conductor 4002 from the second power conductor 4004.

[0159] In other examples, the control valve 420 ( Figure 4 ) of the actuator 422 ( Figure 4 ) can be implemented by a motor. In some examples, the motor can operate in a first direction to open the valve 420 and in a second direction to close the valve ( Figure 4 ). Fig.41 A second example wiring schematic of a harness 3700 that may be used with a motor 4101 in a seat post 114 is shown. In this example, a cable 3708 includes a ground conductor 4100 and a power conductor 4102 electrically coupled between a second connector 3704 and a control device 3706, and a first conductor 4104 and a second conductor 4106 electrically coupled between the control device 3706 and the first connector 3702. To open the valve 420 ( Figure 4), the control device 3706 provides power to drive the motor 4101 in a first direction. For example, the microcontroller 3900 activates the switch 3906 to connect the ground wire 4100 (-) to the first wire 4104 (A) and the power wire 4102 (+) to the second wire 4106 (B). Once the valve 420 is opened, the microcontroller 3900 shuts off power to the motor 4101, but the valve 420 remains open to enable the rider to adjust the height of the seat 112. To close the valve 420, the control device 3706 sends power to the seat post 114 with the opposite polarity to cause the motor 4101 to operate in the opposite direction. For example, the microcontroller 3900 activates the switch to connect the ground wire 4100 (-) to the second wire 4106 (B) and the power wire 4102 (+) to the first wire 4104 (A), thereby causing the motor 4101 to operate in the opposite or second direction. Once valve 420 is closed, microcontroller 3900 turns off power to motor 4101, and valve 420 remains closed, which locks seat post 114 in place. Thus, microcontroller 3900 can activate switch 3906 between (1) a first state, in which ground conductor 4100 is electrically coupled to first conductor 4104 and power conductor 4102 is electrically coupled to second conductor 4106 to provide power to drive motor 4101 in a first direction, and (2) a second state, in which ground conductor 4100 is electrically coupled to second conductor 4106 and power conductor 4102 is electrically coupled to first conductor 4104 to provide power to drive motor 4101 in a second direction.

[0160] In some examples, to reduce power consumption when the bicycle 100 is not in use, the control device 3706 can enter a low power mode or state. In the low power mode, the components 3900-3910, 3714, 3716 ( Fig.39 ) or one or more of the following. For example, the microcontroller 3900 may deactivate itself or enter a low power state (e.g., a sleep state), the wireless communication device 3902 is deactivated, the light 3716 is deactivated, etc. In some examples, the control device 3706 enters a low power mode after an inactive period (e.g., 30 minutes without activity). For example, the vibration sensor 3904 detects vibrations of the control device 3706 and, therefore, detects vibrations experienced by the bicycle 100. The microcontroller 3900 may determine that the inactive period has been met based on the lack of a vibration signal from the vibration sensor 3904 and then switch from the normal operating mode to the low power mode. When the vibration sensor 3904 senses vibrations (such as a rider mounting the bicycle 100), the vibration signal is received by the microcontroller 3900 and wakes up the microcontroller 3900, which then switches back to the normal operating mode. In some examples, the vibration sensor 3904 is implemented as an accelerometer and / or a gyroscope.

[0161] As described above, the control device 3706 and a portion of the cable 3708 can be disposed on the exterior or outside of the frame 102 of the bicycle 100. In some examples, the control device 3706 and / or the cable 3708 can be physically coupled to another structure to help hold the control device 3706 in place. For example, in some examples, the control device 3706 can be mechanically connected to a brake line (e.g., a hydraulic brake hose) that passes through and / or is routed along the frame 102. This enables the control device 3706 to be easily and conveniently mounted to the bicycle 100 without having to add additional mounting features to the bicycle 100.

[0162] Fig.42 An example of a fastener 4201 having two straps 4200 for connecting the control device 3706 to a brake line 4202 of the bicycle 100 is shown. The brake line 4202 can be disposed along the side of the frame 102 of the bicycle 100. The straps 4200 pass through two corresponding openings 4204 in the housing 3712 and wrap around the brake line 4202. In some examples, the straps 4200 are implemented as zip ties. In other examples, the straps 4200 can be implemented as other types of straps, such as fabric straps, hook and loop (e.g., ) strips, rubber bands, etc. Although Fig.42 Two strips are shown in FIG, but any number of strips may be used.

[0163] Fig.43A , Fig.43B and Fig.43C Another example of a fastener 4301 that may be used to connect the control device 3706 to the brake line 4202 is shown. Fig.43A As shown, the fastener 4301 includes a base 4300 coupled to the housing 3712 of the control device 3706. In some examples, the base 4300 is coupled to the housing 3712 via a friction fit interface. Fig.43B As shown, the housing 3712 has two grooves 4302 that slidably receive protrusions 4304 extending from the base 4300. The base 4300 can slide on and off the housing 3712. In some examples, the housing 3712 has a stopper / claw (e.g., a spring-loaded stopper / claw) that engages the base 4300 to hold the base 4300 on the housing 3712. In other examples, the base 4300 can be coupled to the housing 3712 using other chemical and / or mechanical techniques (e.g., threaded fasteners, adhesives, etc.). Fig.43A and Fig.43BAs shown, the base 4300 includes two snap hooks 4306, which are flexible C-shaped members. Although two exemplary snap hooks 4306 are shown, the base 4300 may include one snap hook or more than two snap hooks. Fig.43C As shown, snap hook 4306 can be clamped on brake line 4202. In this example, two snap hooks 4306 face the same direction. In other examples, one of snap hooks 4306 can face the opposite direction and / or base 4300 can include additional snap hooks facing the same or opposite direction.

[0164] Fig.44A Another example fastener 4401 for connecting the control device 3706 to the brake line 4202 is shown. In this example, the fastener 4401 includes three hooks 4400a, 4400b, 4400c extending from the housing 3712 of the control device 3706. The hooks 4400a, 4400b, 4400c can be integrally formed with the housing 3712 (e.g., molded as a single component), or can be separate components coupled to the housing 3712. The second hook 4400b faces in an opposite direction from the first hook 4400a and the second hook 4400b, so that the control device 3706 is well restrained when attached to the brake line 4202, as shown in FIG. Fig.44B To attach the control device 3706 to the brake line 4202, the brake line 4202 may be temporarily bent as needed to engage all three hooks 4400a-4400c. After engaging the hooks 4400a-4400c, the brake line 4202 may be allowed to return to its natural shape.

[0165] Although in Fig.37 and Fig.38 In the example of , the harness 3700 communicates wirelessly with the seat post actuator 119, but in other examples, the harness 3700 may be wired directly to the seat post actuator 119. For example, Fig.45 An example is shown in which the cable 3708 is directly coupled to the seat post actuator 119. Thus, the cable 3708 extends between the first connector 3702, the second connector 3704, and the seat post actuator 119. In this example, the control device 3706 ( Fig.37) is integrated into the seat post actuator 119 on the handlebar 122 (e.g., disposed in a housing of the seat post actuator 119). The wires in the cable 3708 extend into the seat post actuator 119 and are electrically coupled to the microcontroller 3900. The seat post actuation button 120 is connected and / or wired to the microcontroller 3900. Thus, in this example, no radio or wireless signal transmission is used because the seat post actuation button 120 is directly connected to the microcontroller 3900 of the control device 3706. Thus, when the rider presses the seat post actuation button 120, the microcontroller 3900 directly detects the press and can send an electrical signal to the actuator 422 ( Figure 4 ) to provide power. This also eliminates the need to mate the control device 3706 with the seat post actuator 119. In addition, the wiring harness 3700 provides power to the seat post actuator 119, and therefore the seat post actuator 119 does not require a separate battery. In the example shown, the wiring harness 3700 includes a third connector 4500. The third connector 4500 is connected to a mating connector on the seat post actuator 119, which facilitates easy installation and removal of the system on the bicycle 100.

[0166] While the example piston assemblies disclosed herein are described in conjunction with a seat post having a pneumatic platform, the examples disclosed herein may also be used in conjunction with a hydraulic platform. For example, instead of having the pneumatic chambers filled with pressurized gas, the first chamber 416 and the second chamber 418 may be filled with a hydraulic fluid, such as oil. Thus, the examples disclosed herein may be used in conjunction with valves for compressible or incompressible fluids. Also, while the examples disclosed herein utilize a battery on the bicycle, in other examples, the seat post may have a separate battery, such as a battery directly coupled to the seat post.

[0167] The exemplary piston assembly with valve can also be used in other types of bicycle components. For example, any exemplary piston assembly and / or valve can be used in suspension components (e.g., shock absorber, front fork). Suspension components generally include a first tube and a second tube arranged in a telescopic arrangement. The exemplary piston assembly and valve disclosed herein can be used as a damper or spring component to control the flow of fluid between two chambers in one or more tubes.

[0168] Disclosed herein are exemplary systems, devices, and articles for use with bicycles (and / or other vehicles). Examples and combinations of examples disclosed herein include the following:

[0169] Example 1 is a height-adjustable seat post for a bicycle, the height-adjustable seat post comprising an upper tube and a lower tube configured in a telescopic arrangement. The lower tube will be coupled to a frame of the bicycle, and the upper tube will be coupled to a seat. A piston is in the upper tube and divides the upper tube into a first chamber and a second chamber. The first chamber and the second chamber are filled with a fluid. The piston defines a fluid passage between the first chamber and the second chamber. A plug and a seal carried by the plug. The plug is movable in a linear direction between a closed position and an open position, in which the seal engages the piston to prevent fluid from flowing through the fluid passage, and in the open position, the seal is spaced apart from the piston to enable fluid to flow through the fluid passage.

[0170] Example 2 includes the height adjustable seatpost of Example 1, wherein the plug has a first plug portion and a second plug portion extending from a top side of the first plug portion, the first plug portion has a diameter that is larger than a diameter of the second plug portion, and wherein a seal is disposed around the second plug portion and engages with the top side of the first plug portion.

[0171] Example 3 includes the height adjustable seatpost of Examples 1 and 2, wherein the second plug portion has a radially extending flange, the seal being captured between the flange and the first plug portion.

[0172] Example 4 includes a height adjustable seatpost according to any of Examples 1 to 3, wherein the seal is axially clamped between a shoulder of the piston and the first plug portion when the plug is in the closed position.

[0173] Example 5 includes the height adjustable seat post of any of Examples 2 to 4, further comprising a seal retainer coupled to the plug, wherein the seal is captured in a space defined between the seal retainer, the second plug portion, and the first plug portion.

[0174] Example 6 includes the height adjustable seatpost of Example 5, wherein the shoulder is an annular protrusion extending from a surface of the piston.

[0175] Example 7 includes the height adjustable seatpost of Example 6, wherein the shoulder extends through a gap between the seal retainer and the second plug portion to engage the seal when the plug is in the closed position.

[0176] Example 8 includes the height adjustable seatpost of any of Examples 5 to 7, wherein an inner surface of the seal retainer has a groove to relieve pressure from under the seal when the seal engages the shoulder.

[0177] Example 9 includes the height adjustable seat post of any one of Examples 2 to 8, the height adjustable seat post also including a solenoid located in the piston, the solenoid including a spool and a coil wound around the spool, the spool defining a hole, and the first plug portion being slidably disposed in the hole of the spool.

[0178] Example 10 includes the height adjustable seatpost of Example 9, wherein the solenoid includes a core in the hole of the spool.

[0179] Example 11 includes the height adjustable seatpost of Example 10, wherein the bottom of the spool has a vent channel located below the core so that a pressure differential acting on the core holds the core in the bottom of the hole of the spool.

[0180] Example 12 includes the height adjustable seat post of Examples 9 to 11, the height adjustable seat post further comprising a seal retainer coupled to the plug and a spring between the spool and the seal retainer. The spring biases the plug to the closed position.

[0181] Example 13 includes the height adjustable seatpost of Example 4, wherein the seal is a first seal, and wherein the plug has a third plug portion. The second plug portion extends between the third plug portion and the first plug portion. The first plug portion engages a second seal in the piston. The second seal and the first plug portion form a first seal diameter, the first seal and the shoulder form a second seal diameter, the second seal diameter being greater than the first seal diameter.

[0182] Example 14 includes the height adjustable seatpost of any of Examples 1-13, wherein the piston has a plurality of grooves extending axially along an outer surface of the piston to retain a volume of fluid in the second chamber when the height adjustable seatpost is in a fully extended position.

[0183] Example 15 includes the height adjustable seatpost of any of Examples 1 to 14, wherein the fluid is a compressible gas, and wherein the height adjustable seatpost further comprises a volume of incompressible fluid located in the upper tube such that when the height adjustable seatpost is in a fully extended position, the incompressible fluid fills the second chamber.

[0184] Example 16 is a height-adjustable seat post for a bicycle, the height-adjustable seat post comprising an upper tube and a lower tube configured in a telescopic arrangement. The lower tube will be coupled to the frame of the bicycle, and the upper tube will be coupled to the seat. An axis is coupled to the lower end of the lower tube. The axis extends through the lower tube and into the upper tube. The piston assembly comprises a piston coupled to the axis and disposed in the upper tube. The piston divides the upper tube into a first chamber and a second chamber. The first chamber and the second chamber are filled with a pressurized fluid. The piston defines an inner cavity, and a solenoid is in the inner cavity of the piston. The solenoid operates a valve to enable fluid to flow through the piston between the first chamber and the second chamber. At least one wire extends through the axis and into a lower portion of the inner cavity of the piston. The at least one wire is electrically coupled to the solenoid, wherein the lower portion of the inner cavity of the piston is connected to the atmosphere via the axis so that the at least one wire is at atmospheric pressure.

[0185] Example 17 includes the height adjustable seatpost of Example 16, wherein the solenoid includes a spool and a coil wound around the spool, and wherein the piston assembly includes a seal between the spool and an inner surface of the piston to separate the chamber between an upper portion having a pressurized fluid and a lower portion at atmospheric pressure.

[0186] Example 18 includes the height adjustable seatpost of Example 17, wherein the piston assembly includes a set screw that threads into the spool and tightens against the at least one wire to provide strain relief.

[0187] Example 19 includes the height adjustable seatpost of Examples 17 and 18, wherein the spool defines a hole, wherein the solenoid includes a core in the hole of the spool, and wherein the bottom of the spool has a vent channel located below the core to allow the bottom of the core to be open to atmospheric pressure in the lower portion of the interior cavity.

[0188] Example 20 includes the height adjustable seatpost of any of Examples 16-19, the height adjustable seatpost further comprising a base plate assembly having an electrical connector on the lower end of the down tube, the at least one wire being connected to the electrical connector.

[0189] Example 21 is a device for a bicycle, the device including a height adjustable seat post, the height adjustable seat post including a valve and an internal actuator, the internal actuator is used to operate the valve to enable the height adjustable seat post to expand or contract. The device also includes a control device, the control device including a housing and a microcontroller located in the housing. The control device is external to the seat post. The microcontroller is used to control power to the internal actuator based on a wireless signal from a seat post actuator on the bicycle. The device also includes a cable to electrically connect the height adjustable seat post and the control device.

[0190] Example 22 includes the apparatus of Example 21, wherein the cable electrically couples the height adjustable seat post to a power source disposed on the bicycle and arranged externally of the height adjustable seat post.

[0191] Example 23 includes the apparatus of any of Examples 21 to 22, further comprising: a first connector connected to a mating connector on the height-adjustable seat post; and a second connector connected to a power connector on the bicycle to receive power from a battery on the bicycle, wherein a cable electrically couples the first connector, the second connector, and the control device.

[0192] Example 24 includes the apparatus of Example 23, wherein the second connector comprises a magnet or a ferromagnetic material to form a magnetic coupling with a power connector on the bicycle.

[0193] Example 25 includes the apparatus of any of Examples 23 to 24, wherein the internal actuator is a solenoid, and wherein the cable comprises: a ground conductor electrically coupled between the first connector, the second connector, and the control device; a first power conductor electrically coupled between the second connector and the control device; and a second power conductor electrically coupled between the control device and the first connector. The microcontroller electrically couples the first power conductor and the second power conductor to provide power to activate the solenoid.

[0194] Example 26 includes the apparatus of any of Examples 23 to 24, wherein the internal actuator is a motor, and wherein the cable comprises: a ground conductor and a power conductor electrically connected between the second connector and the control device; and a first conductor and a second conductor electrically connected between the control device and the first connector.

[0195] Example 27 includes the apparatus of Example 26, wherein the control device includes a switch, and wherein the microcontroller is used to activate the switch between (1) a first state and (2) a second state, in which the ground conductor is electrically connected to the first conductor and the power conductor is electrically connected to the second conductor to provide power to drive the motor in a first direction, and in which the ground conductor is electrically connected to the second conductor and the power conductor is electrically connected to the first conductor to provide power to drive the motor in a second direction.

[0196] Example 28 includes the apparatus of any of Examples 21 to 27, wherein the control device includes a wireless communication device that communicates with a seat post actuator on the bicycle.

[0197] Example 29 includes the apparatus of any of Examples 21 to 28, wherein the control device includes an indicator, and the microcontroller activates the indicator based on a state of the control device.

[0198] Example 30 includes the apparatus of any of Examples 27 to 29, wherein the control device includes a user operable member that is actuated by a user to cause the microcontroller to pair the control device with the seat post actuator.

[0199] Example 31 includes the apparatus of any of Examples 21 to 30, wherein the control device is configured to enter the low power mode after a period of inactivity.

[0200] Example 32 includes the apparatus of Example 31, wherein the control device comprises a vibration sensor, and wherein the microcontroller determines the inactivity period that it satisfies based on an absence of a vibration signal from the vibration sensor.

[0201] Example 33 includes the apparatus of any of Examples 21 to 32, further comprising a fastener coupled to a housing of the control device to mount the control device to a brake line of a bicycle.

[0202] Example 34 includes the apparatus of Example 33, wherein the fastener is coupled to the housing of the control device via a friction fit interface, and the fastener includes a snap hook that mounts the control device to the brake line.

[0203] Example 35 includes the apparatus of any of Examples 21-32, wherein the control device includes a hook extending from the housing for mounting the control device to the brake line.

[0204] Example 36 includes the apparatus of Example 35, wherein the hook is a first hook and the control device includes a second hook extending from the housing, wherein the first hook and the second hook face in opposite directions.

[0205] Example 37 is a device for a bicycle, the device including a height adjustable seat post, the height adjustable seat post including a valve and an internal actuator, the internal actuator operating the valve to enable the height adjustable seat post to expand or contract. The device includes a seat post actuator for connecting to a handlebar of the bicycle. The seat post actuator includes a control device, the control device is used to control the power to the height adjustable seat post to activate the internal actuator. The device includes a wiring harness, the wiring harness including: a first connector, the first connector, the first connector, the second connector, the second connector, the second connector, the power connector on the bicycle, to receive power from a battery on the bicycle; and a cable, the cable is located between the first connector, the second connector and the seat post actuator.

[0206] Example 38 includes the apparatus of Example 37, wherein the wiring harness includes a third connector for connecting to a mating connector on the seat post actuator.

[0207] Example 39 includes the apparatus of example 37 or 38, wherein the seat post actuator comprises a user operable member, and wherein, in response to actuation of the user operable member by a user, the control device is used to activate the actuator to open the valve in the height adjustable seat post.

[0208] Example 40 includes the apparatus of any of Examples 37 to 39, wherein the control means is configured to enter the low power mode after a period of inactivity.

[0209] Example 41 includes the apparatus of any of Examples 37 to 40, wherein the second connector comprises a magnet or a ferromagnetic material to form a magnetic coupling with a power connector on the bicycle.

[0210] The illustrations of the embodiments described herein are intended to provide a general understanding of the structures of the various embodiments. The 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. By 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 merely representative and may not be drawn to scale. Certain proportions in 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.

[0211] 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 in multiple embodiments individually or in any suitable sub-combination. In addition, although features may be described above as acting in certain combinations and even initially claimed as such, in some cases, one or more features from the claimed combination may be removed from the combination, and the claimed combination may involve a sub-combination or a variation of the sub-combination.

[0212] 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. The present 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 upon reading the specification.

[0213] 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 involve features that are less than all the features of any disclosed embodiment. Therefore, the following claims are incorporated into the Detailed Description, with each claim independently defining a separately claimed subject matter.

[0214] It is intended that the foregoing detailed description be regarded as illustrative rather than restrictive, and it should be understood that the appended claims including all equivalents are intended to define the scope of the invention. The claims should not be understood to be limited to the described order or elements unless otherwise explicitly stated. Therefore, all embodiments falling within the scope and spirit of the appended claims and their equivalents are claimed to be protected as the present invention.

[0215] CROSS-REFERENCE TO RELATED APPLICATIONS

[0216] This application is derived from a partial continuation of U.S. application No. 18 / 473,471, filed on September 25, 2023, entitled “Height Adjustable Seat Posts for Bicycles,” the entire contents of which are incorporated herein by reference.

Claims

1. A device for a bicycle, the device comprising: a height adjustable seat post comprising a valve and an internal actuator for operating the valve to enable expansion or contraction of the height adjustable seat post; a control device including a housing and a microcontroller in the housing, the control device being disposed outside the height adjustable seat post, the microcontroller being configured to control power to the internal actuator based on a wireless signal from a seat post actuator on the bicycle; as well as A cable is provided for electrically coupling the height-adjustable seat post and the control device.

2. The device according to claim 1, wherein: The cable electrically couples the height-adjustable seat post to a power source provided on the bicycle and disposed externally of the height-adjustable seat post.

3. The device according to claim 2, further comprising: a first connector for connecting to a mating connector on the height-adjustable seatpost; as well as A second connector for connecting to a power connector on the bicycle to receive power from the power source on the bicycle, wherein the cable electrically couples the first connector, the second connector and the control device.

4. The device according to claim 3, wherein: The second connector includes a magnet or ferromagnetic material to form a magnetic coupling with the power connector on the bicycle.

5. The device according to claim 3, wherein: The internal actuator is a solenoid, and wherein the cable comprises: a ground wire electrically connected between the first connector, the second connector and the control device; a first power conductor electrically coupled between the second connector and the control device; and A second power conductor is electrically coupled between the control device and the first connector, wherein the microcontroller is configured to electrically couple the first power conductor and the second power conductor to provide power to activate the solenoid.

6. The device according to claim 3, wherein: The internal actuator is a motor, and wherein the cable comprises: a ground conductor and a power conductor, the ground conductor and the power conductor being electrically coupled between the second connector and the control device; and A first wire and a second wire are electrically connected between the control device and the first connector.

7. The device according to claim 6, wherein: The control device includes a switch, and wherein the microcontroller is used to activate the switch between a first state and a second state, in which the ground wire is electrically connected to the first wire and the power wire is electrically connected to the second wire to provide power to drive the motor in a first direction, and in the second state, the ground wire is electrically connected to the second wire and the power wire is electrically connected to the first wire to provide power to drive the motor in a second direction.

8. The device according to claim 1, wherein: The control device includes wireless communication means for communicating with the seat post actuator on the bicycle.

9. The device according to claim 1, wherein: The control device includes an indicator, and the microcontroller is used to activate the indicator based on the state of the control device.

10. The device according to claim 1, wherein: The control device includes a user operable member that is activated by a user to cause the microcontroller to pair the control device with the seat post actuator.

11. The device according to claim 1, wherein: The control means is configured to enter a low power mode after a period of inactivity.

12. The device according to claim 11, wherein The control device comprises a vibration sensor, and wherein the microcontroller is configured to determine the inactivity period based on an absence of a vibration signal from the vibration sensor.

13. The apparatus of claim 1, further comprising a fastener coupled to the housing of the control device to mount the control device to a brake line of the bicycle.

14. The device according to claim 13, wherein: The fastener is coupled to the housing of the control device via a friction fit interface, and the fastener includes a snap hook to mount the control device to the brake line.

15. The apparatus according to claim 13, wherein: The fastener includes a hook extending from the housing, the hook being used to mount the control device to a brake line.

16. The device according to claim 15, wherein: The hook is a first hook and the control device includes a second hook extending from the housing, wherein the first hook and the second hook face in opposite directions.

17. A device for a bicycle, the device comprising: a height adjustable seat post comprising a valve and an internal actuator for operating the valve to enable the height adjustable seat post to expand or contract; a seat post actuator for coupling to a handlebar of the bicycle, the seat post actuator including a control device for controlling power to the height adjustable seat post to activate the internal actuator; as well as A wiring harness, the wiring harness comprising: a first connector for connecting to a mating connector on the height-adjustable seatpost; a second connector for connecting to a power connector on the bicycle to receive power from a battery on the bicycle; and A cable is disposed between the first connector, the second connector, and the seat post actuator.

18. The apparatus according to claim 17, wherein: The wiring harness includes a third connector for connecting to a mating connector on the seat post actuator.

19. The apparatus according to claim 17, wherein: The seat post actuator comprises a user operable member, and wherein, in response to the user operable member being actuated by a user, the control device activates the actuator to open the valve in the height adjustable seat post.

20. The apparatus of claim 17, wherein: The control means is configured to enter a low power mode after a period of inactivity.

21. The apparatus of claim 17, wherein: The second connector includes a magnet or ferromagnetic material to form a magnetic coupling with the power connector on the bicycle.

Images