A device for adjusting the resistance of an exercise bicycle using a hand lever transmission

Abstract

The utility model discloses a device of resistance of health bicycle is adjusted with handlebar transmission, including health bicycle body, handlebar transmission control device and bicycle main control board. Handlebar transmission control device is located at handle, contains transmission and gear detection sensor, and sensor sends gear data to bicycle main control board through communication module, and bicycle main control board is electrically connected with resistance adjusting system, and resistance is adjusted according to data. User can adjust resistance and brake without moving hand, keeps posture stable, improves riding continuity and experience, avoids unbalance risk, and mechanical brake and signal detection are combined to ensure reliable and monitorable. The device supports wired / wireless communication, various rotating modes and speed regulation mode, simulates real riding operation and enhances the sense of immersion.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically a device for adjusting the resistance of an exercise bike using a handlebar gear shifter. Background Technology

[0002] With the continuous improvement of public health awareness, exercise bikes (also known as spin bikes) have become the mainstream fitness equipment in home fitness settings and commercial gyms due to their core advantages such as ease of use and space saving.

[0003] Currently, the resistance adjustment system of exercise bikes mainly relies on two types of technology: one is the physical adjustment method where friction plates contact the flywheel, and the other is the electronic adjustment method using electromagnetic induction. However, both of these solutions have significant drawbacks, namely, users must remove their hands from the handlebars to operate the resistance adjustment device while riding. This operation not only interrupts the continuity of riding and weakens the exercise experience, but may also cause the body to lose balance due to the hands being removed from the support, thus creating a safety hazard.

[0004] To address the aforementioned pain points, this invention designs a gearbox adjustment device integrated into the handlebars: users can precisely adjust the resistance without taking their hands off the handlebars, ensuring the continuity of the riding process, fundamentally reducing the risk of imbalance, and significantly improving ease of operation and riding safety. Utility Model Content

[0005] The purpose of this invention is to provide a device for adjusting the resistance of an exercise bike using a handlebar gearshift, in order to solve the problem mentioned in the background art that the resistance adjustment of existing exercise bikes requires hands-free operation.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A device for adjusting the resistance of an exercise bike using a handlebar shifter includes an exercise bike body, a handlebar shifter control device, and a bike main control board; the handlebar shifter control device is located on the handlebars of the exercise bike body, and includes a shifter and a gear position detection sensor, the gear position detection sensor being connected to the shifter for detecting the current gear of the shifter;

[0008] The handlebar gearbox control device also includes a communication module. The gear position detection sensor communicates with the main control board of the bicycle through the communication module and is used to send the detected gear position data to the main control board of the bicycle.

[0009] The main control board of the exercise bike is electrically connected to the resistance adjustment system of the exercise bike body, and is used to control the resistance adjustment system to adjust the resistance of the exercise bike according to the received gear data.

[0010] According to the above technical solution, the handlebar gear shifter control device also includes a battery compartment. The battery compartment is electrically connected to the gear position detection sensor and the communication module via a power cord, and is used to supply power to the gear position detection sensor and the communication module. The types of batteries that can be placed in the battery compartment include button batteries, lithium batteries or alkaline batteries.

[0011] According to the above technical solution, the communication module includes a wireless communication module and / or a wired communication interface; the wired communication interface is a communication interface socket, used to establish a communication connection with the bicycle main control board via a wired method; the wireless communication module is used to establish a communication connection with the bicycle main control board via a wireless method.

[0012] According to the above technical solution, the transmission includes a gear position adjustment shaft and a speed adjustment lever. The speed adjustment lever is connected to the gear position adjustment shaft, and a magnet is provided at the end of the gear position adjustment shaft. A gear position detection sensor is arranged opposite to the magnet and is used to detect the angle of rotation of the magnet with the gear position adjustment shaft in order to obtain the current gear position of the transmission.

[0013] According to the above technical solution, the magnet is fixed at the center of the end of the gear adjustment shaft, and the orthographic projection of the magnet at least partially overlaps with the orthographic projection of the gear detection sensor.

[0014] According to the above technical solution, the handlebar derailleur control device also includes a brake and a brake signal detection component. The brake signal detection component is connected to the brake and is used to detect the operating status of the brake. The brake signal detection component is connected to the bicycle main control board through a communication module and is used to send the operating status data of the brake to the bicycle main control board.

[0015] According to the above technical solution, the brake signal detection component is a brake signal socket. When the brake is gripped, the signal level at the brake signal socket changes.

[0016] According to the above technical solution, the brake is a mechanical brake used to brake the flywheel of the exercise bike; the bike's main control board is also used to receive and display the brake's operating status data.

[0017] According to the above technical solution, the gear position detection sensor is a magnetic angle sensor, which is used to detect the displacement state of the gear adjustment shaft of the transmission to obtain the current gear.

[0018] According to the above technical solution, the rotation mode of the gear adjustment shaft includes vertical rotation, horizontal rotation, or push-button switch rotation; the transmission supports fixed gear adjustment or stepless speed regulation.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this invention, users can adjust resistance and brake without taking their hands off the handlebars, maintaining a stable riding posture and improving riding continuity and experience; avoiding the risk of body imbalance caused by hands-free operation; and the combination of mechanical brakes and signal detection ensures reliable braking and monitorable status.

[0021] This invention supports wired / wireless communication, multiple rotation methods, and speed adjustment modes, simulating the gear shifting and braking operations in real cycling, thus enhancing the immersive experience of fitness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the adjusting device of this utility model.

[0023] The markings in the diagram are: 1-Battery compartment, 2-Battery compartment power cord, 3-Signal detection board battery holder, 4-Communication interface socket, 5-Brake signal socket, 6-Gear detection sensor, 7-Circuit board, 8-Wireless communication module, 9-Magnet, 10-Gear adjustment shaft, 11-Speed ​​control handle, 12-Brake. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figure 1 As shown, a device for adjusting the resistance of an exercise bike using a handlebar shifter includes an exercise bike body, a handlebar shifter control device, and a bike main control board; the handlebar shifter control device is located on the handlebars of the exercise bike body, and includes a shifter and a gear position detection sensor 6, which is connected to the shifter and used to detect the current gear of the shifter.

[0027] The handlebar gearbox control device also includes a communication module. The gear position detection sensor 6 communicates with the main control board of the bicycle through the communication module and is used to send the detected gear position data to the main control board of the bicycle.

[0028] The main control board of the exercise bike is electrically connected to the resistance adjustment system of the exercise bike body, and is used to control the resistance adjustment system to adjust the resistance of the exercise bike according to the received gear data.

[0029] In this invention, users can adjust resistance and brake without taking their hands off the handlebars, maintaining a stable riding posture and improving riding continuity and experience; avoiding the risk of body imbalance caused by hands-free operation; and the combination of mechanical brakes and signal detection ensures reliable braking and monitorable status.

[0030] This invention supports wired / wireless communication, multiple rotation methods, and speed adjustment modes, simulating the gear shifting and braking operations in real cycling, thus enhancing the immersive experience of fitness.

[0031] Example 2

[0032] This embodiment is a further refinement of Embodiment 1. This embodiment provides a specific implementation structure, the device comprising:

[0033] The exercise bike consists of a frame, a flywheel, and a resistance adjustment system. The resistance adjustment system is used to change the rotational resistance of the flywheel, thereby adjusting the riding load.

[0034] The handlebar gear control device is located on the handlebars of the exercise bike and includes a gearshift, a gear position sensor 6, a communication module, a battery compartment 1, a brake brake 12, and a brake signal detection component. The specific structure is as follows:

[0035] The gearbox consists of a gear adjustment shaft 10 and a speed adjustment handle 11. The speed adjustment handle 11 is connected to the gear adjustment shaft 10. The user rotates the speed adjustment handle 11 to drive the gear adjustment shaft 10 to rotate. A magnet 9 is fixed at the center of the end of the gear adjustment shaft 10 to cooperate with the gear detection sensor 6 to detect the rotation angle. The gear adjustment shaft 10 is rotatably connected to the handlebars, for example, using a deep groove ball bearing 608ZZ with a clearance of 0.05-0.1mm.

[0036] The gear position detection sensor 6 is positioned opposite to the magnet 9, with a distance of 0.8-2mm between the magnet 9 and the gear position detection sensor 6 (their orthographic projections at least partially overlap, and the overlap rate is ≥70%). It is used to detect the angle of rotation of the magnet 9 with the gear position adjustment shaft 10, thereby obtaining the current gear position of the transmission. The gear position detection sensor 6 adopts a magnetic angle sensor or other sensor suitable for detecting displacement.

[0037] The communication module includes a wireless communication module 8 (such as Bluetooth or RF module) and / or a wired communication interface (such as a communication interface socket 4), which is used to send the gear position data obtained by the gear position detection sensor 6 and the brake status data obtained by the brake signal detection component to the vehicle main control board.

[0038] Brake 12 is a mechanical brake used to brake the flywheel; the brake signal detection component is brake signal socket 5. When brake 12 is gripped, the signal level at brake signal socket 5 changes, thereby sending the brake operation status data to the bicycle main control board through the communication module.

[0039] Furthermore, the brake signal socket 5 is fixed inside the brake 12, 3mm away from the initial position of the brake lever of the brake 12, with a trigger stroke of 3-6mm, and is reset using a reset spring, for example, a stainless steel spring with a wire diameter of 0.5mm and a free length of 10mm.

[0040] The main control board of the exercise bike is electrically connected to the resistance adjustment system of the exercise bike body. After receiving the gear data transmitted by the communication module, it controls the resistance adjustment system to adjust the resistance of the exercise bike. At the same time, it receives and displays the operation status data of the brake 12 to help users manage the riding status.

[0041] Battery compartment 1 is connected to electrical components such as gear position detection sensor 6 and communication module via a power cord to supply power to them; battery compartment 1 can hold button batteries, lithium batteries or alkaline batteries, etc.

[0042] The circuit board 7 integrates a signal detection board, a battery holder 3, a communication interface socket 4, a brake signal socket 5, a gear position detection sensor 6, and a wireless communication module 8.

[0043] Preferably, the battery is a CR2032 button cell or a 14500 lithium battery with a voltage range of 3.0-3.7V, a minimum capacity of ≥800mAh, and ensures continuous operation for ≥300h.

[0044] The brake 12 is connected to the brake signal socket 5 and adopts a mechanical braking structure.

[0045] It should be noted that all electronic components used in this invention are existing devices. For example, the gear position detection sensor 6 is a magnetic angle sensor, specifically a TLE5012B type angle sensor; the wireless communication module 8 uses a JDY-64 (Bluetooth 5.0 module); the communication interface socket 4 uses a JST PH2.0-2P; the main control board of the exercise bike uses an STMicroelectronics STM32F103C8T6; and the brake signal socket 5 uses an Omron B3F-1000 (tactile switch). Furthermore, how to electrically connect the main control board to the resistance adjustment system of the exercise bike body, and how to receive gear position data transmitted from the communication module to control the resistance adjustment system to adjust the resistance of the exercise bike, is common knowledge to those skilled in the art, and therefore will not be elaborated upon here.

[0046] The working principle of this utility model is as follows: the user rotates the speed control handle 11, which drives the gear adjustment shaft 10 and the magnet 9 to rotate; the gear detection sensor 6 detects the rotation angle of the magnet 9 and converts it into gear data; the data is transmitted to the bicycle main control board through the communication interface socket 4 or the wireless communication module 8; the bicycle main control board controls the resistance adjustment system to adjust the flywheel resistance according to the gear data.

[0047] Braking operation: When the user grips the brake 12, the voltage level at the brake signal socket 5 changes, and the braking status data is transmitted to the bicycle main control board through the communication module; the bicycle main control board displays the braking status, and at the same time, the mechanical braking structure brakes the flywheel.

[0048] Furthermore, the main control board of the bicycle is an STM32F103C8T6, which has a pre-stored resistance-gear mapping table. This mapping table defines the correspondence between the rotation angle (or the corresponding gear number) of the gear adjustment shaft 10 and the target resistance value.

[0049] For example, when the gear detection sensor 6 detects a shaft angle of 0°, it corresponds to gear 1 with a target resistance value of 5 N·m; when the angle is 30°, it corresponds to gear 2 with a target resistance value of 10 N·m; and so on, up to the maximum gear. This mapping table can be dynamically switched in the program according to different fitness course modes.

[0050] The bicycle's main control board outputs a PWM (Pulse Width Modulation) signal to the resistance regulation system via its GPIO or DAC pins. The duty cycle of the PWM signal is linearly related to the target resistance value. For example, when the duty cycle of the PWM signal received by the resistance regulation system is 0%, it provides the minimum resistance (e.g., 5 N·m); when the duty cycle is 100%, it provides the maximum resistance (e.g., 50 N·m).

[0051] The resistance regulation system (in this embodiment, a magnetically controlled resistance system) includes an eddy current brake coupled to the flywheel (e.g., an EMB-03 type eddy current brake, rated voltage 12V, rated current 0.8A). The excitation current of this brake receives a PWM signal from the vehicle's main control board and converts it into a smooth DC control voltage through an RC low-pass filter (e.g., R = 1.2kΩ, C = 22μF, error ±10%), thereby precisely controlling the magnitude of the excitation current and ultimately achieving stepless adjustment of the flywheel resistance.

[0052] Furthermore, the wired communication interface socket 4 uses a JST PH2.0-2P connector, with its two pins defined as a 3.3V TTL level serial data transmitter (TXD) and a ground terminal (GND), respectively. Communication parameters are set as follows: baud rate 9600, 8 data bits, no parity bit, and 1 stop bit. The data packet format is: each frame contains a 1-byte frame header (0xAA), a 1-byte bit position data, and a 1-byte checksum.

[0053] The wireless communication module 8 uses a JDY-64 Bluetooth 5.0 module, which connects to the bicycle's main control board via a UART serial port, also with a baud rate of 9600. Upon power-up, it automatically enters broadcast mode and, after pairing with the bicycle's main control board (which has a built-in Bluetooth master device), establishes transparent communication. The data transmission format is consistent with wired communication to ensure protocol uniformity.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for adjusting the resistance of an exercise bike using a handlebar shifter, characterized in that: It includes a handlebar gear control device and a bicycle main control board; the handlebar gear control device is located on the handlebars of the exercise bike, and the handlebar gear control device includes a gearbox and a gear position detection sensor (6). The gear position detection sensor (6) is connected to the gearbox and is used to detect the current gear of the gearbox. The handlebar gearbox control device also includes a communication module. The gear position detection sensor (6) is connected to the main control board of the bicycle through the communication module and is used to send the detected gear position data to the main control board of the bicycle. The main control board of the exercise bike is electrically connected to the resistance adjustment system of the exercise bike, and is used to control the resistance adjustment system to adjust the resistance of the exercise bike according to the received gear data.

2. The device for adjusting the resistance of an exercise bike using a handlebar shifter according to claim 1, characterized in that: The handlebar gearbox control device also includes a battery compartment (1), which is electrically connected to the gear position detection sensor (6) and the communication module via a battery compartment power cable (2) to supply power to the gear position detection sensor (6) and the communication module; the battery types that can be placed in the battery compartment (1) include button batteries, lithium batteries or alkaline batteries.

3. The device for adjusting the resistance of an exercise bike using a handlebar shifter according to claim 1, characterized in that: The communication module includes a wireless communication module (8) and / or a wired communication interface; the wired communication interface is a communication interface socket (4), which is used to establish a communication connection with the main control board of the bicycle via a wired method; the wireless communication module (8) is used to establish a communication connection with the main control board of the bicycle via a wireless method.

4. The device for adjusting the resistance of an exercise bike using a handlebar shifter according to claim 1, characterized in that: The transmission includes a gear shifting shaft (10) and a speed control lever (11). The speed control lever (11) is connected to the gear shifting shaft (10). A magnet (9) is provided at the end of the gear shifting shaft (10). A gear position detection sensor (6) is arranged opposite to the magnet (9) and is used to detect the angle of rotation of the magnet (9) with the gear shifting shaft (10) to obtain the current gear position of the transmission.

5. The device for adjusting the resistance of an exercise bike using a handlebar shifter according to claim 4, characterized in that: The magnet (9) is fixed at the center of the end of the gear adjustment shaft (10), and the orthographic projection of the magnet (9) at least partially overlaps with the orthographic projection of the gear detection sensor (6).

6. The device for adjusting the resistance of an exercise bike using a handlebar deceleration according to claim 1, characterized in that: The handlebar gearbox control device also includes a brake (12) and a brake signal detection component. The brake signal detection component is connected to the brake (12) and is used to detect the operating status of the brake (12). The brake signal detection component is connected to the bicycle main control board through a communication module and is used to send the operating status data of the brake (12) to the bicycle main control board.

7. A device for adjusting the resistance of an exercise bike using a handlebar shifter according to claim 6, characterized in that: The brake signal detection component is a brake signal socket (5). When the brake (12) is gripped, the signal level at the brake signal socket (5) changes.

8. A device for adjusting the resistance of an exercise bike using a handlebar deceleration according to claim 6, characterized in that: The brake (12) is a mechanical brake used to brake the flywheel of the exercise bike.

9. A device for adjusting the resistance of an exercise bike using a handlebar deceleration according to claim 1, characterized in that: The gear position detection sensor (6) is a magnetic angle sensor used to detect the displacement state of the gear position adjustment shaft (10) of the transmission to obtain the current gear position.

10. A device for adjusting the resistance of an exercise bike using a handlebar shifter according to claim 4, characterized in that: The rotation mode of the gear adjustment shaft (10) includes vertical rotation, horizontal rotation or push-button switch rotation.

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