Intelligent speed control system and bicycle

Abstract

According to the intelligent speed change system and the bicycle, the riding state of a rider can be determined by arranging a plurality of state detection units, a main controller can be made to have the capacity of conducting gear adjustment on a flywheel by connecting the main controller to a flywheel speed change device, and therefore the speed change efficiency of the bicycle is improved. Self-adaptive adjustment of the flywheel gear can be completed based on the riding state in the riding process of the rider, and the riding efficiency of the rider is improved; meanwhile, the movable shaft sleeve is arranged on the middle shaft, and the chain wheel is arranged on the shaft sleeve, so that the chain wheel can be driven by the electric control driving unit to adaptively adjust along with the gear change of the bicycle when the gear change of the flywheel of the bicycle is carried out, and the included angle between the chain and the chain wheel is effectively reduced; therefore, the riding efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bicycles, in particular to an intelligent gear shifting system and a bicycle. BACKGROUND

[0002] At present, the gear shifting of a variable speed bicycle relies on manual operation. When riding, once the slope changes or the rider wants to adjust the speed, he can only rely on his accumulated experience to judge the appropriate timing of gear shifting. This mode of relying on experience to shift gears requires a high degree of experience for the rider. Novice riders are difficult to accurately determine the timing of gear shifting due to lack of experience, and once the operation is wrong, the riding process will produce a noticeable jerk, not only will the rider consume more physical strength, but also will greatly damage the riding experience. At the same time, in the process of gear shifting, there is a problem of too large angle between the sprocket and the chain in many gear states, which reduces the riding efficiency and further reduces the overall riding experience. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide an intelligent gear shifting system and a bicycle, which can improve the riding efficiency of a bicycle rider.

[0004] The intelligent gear shifting system according to the first aspect of the present application comprises:

[0005] a plurality of state detection units, each of which is used to collect at least one of bicycle operating parameters and / or at least one of human body function parameters;

[0006] a main controller, which is electrically connected with the plurality of state detection units;

[0007] a freewheel gear shifting device, which is connected with the main controller and is used to adjust the gear position of the freewheel;

[0008] an electric sprocket device, which comprises a middle shaft, a shaft sleeve, an extension mechanism and an electric control driving unit; the middle shaft is used to rotate and is installed on a frame; the shaft sleeve is sleeved on the middle shaft and can move along the axial direction of the middle shaft, the shaft sleeve and the middle shaft are relatively fixed in the circumferential direction of the middle shaft, and a sprocket is arranged on the shaft sleeve; the extension mechanism is arranged in the middle shaft and is connected to the shaft sleeve and / or the sprocket; the electric control driving unit is arranged on the frame and is used to drive the extension mechanism to operate, so that the extension mechanism drives the shaft sleeve to move along the axial direction of the middle shaft through extension and contraction, the shaft sleeve can rotate relative to the extension mechanism, and the electric control driving unit is electrically connected with the main controller.

[0009] The bicycle according to the second aspect of the present application comprises the intelligent gear shifting system according to the first aspect.

[0010] The intelligent speed change system and the bicycle of the embodiment of the application can determine the riding state of the rider by setting multiple state detection units, can make the main controller have the ability to adjust the gear position of the freewheel by connecting the main controller to the freewheel speed change device, and can then complete the adaptive adjustment of the gear position of the freewheel based on the riding state during the rider's riding process, thereby improving the riding efficiency of the rider. Meanwhile, by setting a movable shaft sleeve on the middle shaft and setting a tooth disc on the shaft sleeve, the tooth disc can be adaptively adjusted by the electric control driving unit to follow the gear position change of the bicycle when the gear position of the bicycle freewheel changes, so that the included angle between the chain and the tooth disc is effectively reduced, thereby further improving the riding efficiency.

[0011] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0012] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0013] Figure 1 An electrical system diagram of the intelligent speed change system provided by the embodiment of the application is shown in the figure;

[0014] Figure 2 A schematic diagram of the overall structure of the electric tooth disc device provided by the embodiment of the application is shown in the figure;

[0015] Figure 3 A partial sectional view of the electric tooth disc device provided by the embodiment of the application is shown in the figure.

[0016] Reference signs:

[0017] Middle shaft 100; mounting cavity 101; let-out slot 102; limiting protrusion 103;

[0018] Shaft sleeve 200;

[0019] Tooth disc 300;

[0020] Telescopic mechanism 400; connecting piece 401;

[0021] First bearing 500; axial locking structure 501; first locking plug 502; first sealing ring 503;

[0022] Second bearing 600; second locking plug 601; second sealing ring 602;

[0023] Assembly seat 700; mounting hole 701; let-out cavity 702;

[0024] Frame 800;

[0025] A first medium conveying pipe 900; a second medium conveying pipe 901; an electrically controlled driving unit 902; a rotary joint 903;

[0026] A crank connecting shaft 1000;

[0027] A flywheel 1100;

[0028] A main controller 1201; a position detection unit 1202; a wireless communication module 1203; a torque detection unit 1204; a pedaling frequency detection unit 1205; a man-machine interaction unit 1206; a lactic acid detection device 1207; a heart rate detection device 1208; a blood pressure detection device 1209. DETAILED DESCRIPTION

[0029] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, if the first, second, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features or the sequence of the indicated technical features.

[0031] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be noted that, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0033] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the following described embodiments are only part of the embodiments of the present application, not all embodiments.

[0034] Referring to Figure 1 As shown in the drawings, one embodiment of the intelligent transmission system provided by the present application comprises:

[0035] A plurality of state detection units, each state detection unit being configured to collect at least one of the bicycle operating parameters and / or at least one of the human function parameters.

[0036] The main controller 1201 is electrically connected with the plurality of state detection units respectively.

[0037] The flywheel speed change device is connected with the main controller 1201, and is used for adjusting the gear position of the flywheel 1100.

[0038] The electric toothed disc device comprises a middle shaft 100, a shaft sleeve 200, an extension mechanism 400 and an electric control driving unit 902. The middle shaft 100 is used for rotatingly mounting the vehicle frame 800. The shaft sleeve 200 is sleeved on the middle shaft 100 and can move along the axial direction of the middle shaft 100. The shaft sleeve 200 is relatively fixed with the middle shaft 100 in the circumferential direction of the middle shaft 100. The toothed disc 300 is arranged on the shaft sleeve 200. The extension mechanism 400 is arranged in the middle shaft 100 and is connected with the shaft sleeve 200 and / or the toothed disc 300. The electric control driving unit 902 is arranged on the vehicle frame 800 and is used for driving the extension mechanism 400 to operate, so that the extension mechanism 400 drives the shaft sleeve 200 to move along the axial direction of the middle shaft 100. The shaft sleeve 200 can rotate relative to the extension mechanism 400. The electric control driving unit 902 is electrically connected with the main controller 1201.

[0039] In the embodiment, the plurality of state detection units are arranged to determine the riding state of the rider. The main controller 1201 is connected with the flywheel speed change device, so that the main controller 1201 has the ability to adjust the gear position of the flywheel 1100. Thus, the adaptive adjustment of the gear position of the flywheel 1100 can be completed based on the riding state during the rider's riding, so as to improve the riding efficiency of the rider. Meanwhile, the movable shaft sleeve 200 is arranged on the middle shaft 100, and the toothed disc 300 is arranged on the shaft sleeve 200. Thus, when the gear position of the flywheel 1100 changes, the electric control driving unit 902 is used to drive the toothed disc 300 to adaptively adjust the gear position of the flywheel 1100, so that the included angle between the chain and the toothed disc 300 is effectively reduced, thereby further improving the riding efficiency.

[0040] The above-mentioned bicycle operating parameters can include the parameters that can be directly detected on the bicycle, such as the driving speed, the wheel speed, the pedaling frequency, the torque and the like. The specific number of the parameters needs to be flexibly selected according to the actual demand. In many common scenarios, the pedaling frequency and the torque can meet the demand.

[0041] The above-mentioned human function parameters can include the parameters that need to be detected on the rider, such as the blood pressure, the lactic acid, the heart rate, the blood oxygen content and the like. The specific number of the parameters needs to be flexibly selected according to the actual demand. In many common scenarios, the lactic acid and the heart rate can meet the demand.

[0042] The main controller 1201 can directly obtain the bicycle operating parameters and / or human function parameters collected by the plurality of state detection units after being electrically connected to the plurality of state detection units. The types and quantities of the collected parameters need to be determined according to the types of the sensors corresponding to the plurality of state detection units and the speed of each type.

[0043] The main controller 1201 can control the freewheel variable speed device to adjust the gear position of the freewheel 1100 after being electrically connected to the freewheel variable speed device of the bicycle.

[0044] The freewheel variable speed device can directly use a mature electric freewheel 1100 variable speed mechanism on the market for controlling the gear shifting of the freewheel 1100, or can use other forms of freewheel 1100 variable speed mechanisms that can be electrically controlled by the main controller 1201. For example, a common electric freewheel 1100 variable speed mechanism can start the gear shifting operation by giving a simple control instruction.

[0045] It should be noted that the bicycle operating parameters and human function parameters can reflect the physical state of the rider to a certain extent during riding. For example, the torque can reflect the force state of the rider during riding. Generally, the greater the force, the greater the torque. The pedaling frequency can directly reflect the speed of the rider pedaling the pedal. Generally, the faster the speed, the more tiring it is. Lactic acid can directly reflect the current anaerobic exercise situation or fatigue state of the rider. Generally, the higher the lactic acid, the more prominent the anaerobic exercise situation or the more fatigue. Heart rate can directly reflect the load state of the rider. Generally, the higher the heart rate, the greater the current load on the rider. Based on the foregoing principles, the current riding state of the rider can be effectively determined by comprehensively analyzing the bicycle operating parameters and human function parameters, and then the freewheel 1100 is controlled to shift up when the human body is tired, and the freewheel 1100 is controlled to shift down when it is too easy. However, there are many ways to determine the riding state of the rider by using the bicycle operating parameters and human function parameters. Generally, multiplication, weighted operation, etc. can be directly used. Some fixed calculation models can also be used. Taking lactic acid and heart rate as an example, the product of lactic acid and heart rate can be directly used, and the product and the pre-set threshold or threshold range can be used to determine whether the rider is in an ideal riding state. For example, the product is greater than the pre-set threshold or threshold range to shift up, and the product is less than the pre-set threshold or threshold range to shift down. Of course, a weight factor can be further introduced to perform weighted operation on lactic acid and heart rate, so that a better calculation value (the product can be understood as the calculation value) for determining the pre-set threshold or threshold range can be obtained in some scenarios. Then, the calculation value and the pre-set threshold or threshold range can be used to determine, and there are many ways to determine. The user can choose the specific way according to the actual needs.

[0046] The above-mentioned middle shaft 100 can be installed on the frame 800 through the assembly seat 700. Specifically, the assembly seat 700 can be installed with a bearing system, and the middle shaft 100 is installed on the bearing system to enable the middle shaft 100 to rotate. In addition, the two ends of the middle shaft 100 can be provided with a crank connecting shaft 1000 for connecting a crank, and the crank is used to install a pedal, and the user of the bicycle rotates the crank through the pedal, and then drives the middle shaft 100 to rotate.

[0047] The above-mentioned shaft sleeve 200 is sleeved outside the middle shaft 100 and can move along the middle shaft 100. After the tooth disc 300 is fixed on the shaft sleeve 200, the tooth disc 300 can move along the middle shaft 100, so as to adjust the relative position of the tooth disc 300 and the middle shaft 100. The shaft sleeve 200 and the middle shaft 100 are relatively fixed in the circumferential direction, so that when the middle shaft 100 rotates, the shaft sleeve 200 can be driven to rotate, thereby driving the tooth disc 300 to rotate.

[0048] In addition, the length of the shaft sleeve 200 can be flexibly adjusted according to actual needs. For example, as shown in Figure 3 , when the designed length is longer, the shaft sleeve 200 can be extended to between the middle shaft 100 and the bearing system for installing the middle shaft 100, and when the designed length is shorter, the shaft sleeve 200 can not be extended to between the middle shaft 100 and the bearing system for installing the middle shaft 100, and the whole is kept outside the bearing system. It should be noted that the shaft sleeve 200 has advantages of being long and short. In the case that the driving demand of the tooth disc 300 is small, the shaft sleeve 200 with a shorter length can be considered.

[0049] The above-mentioned telescopic mechanism 400 is installed in the middle shaft 100. The telescopic mechanism 400 can be connected to the shaft sleeve 200, or can be connected to the tooth disc 300, or can be connected to both the shaft sleeve 200 and the tooth disc 300. The telescopic direction of the telescopic mechanism 400 can be the axial direction of the middle shaft 100, or can be slightly deviated from the axial direction of the middle shaft 100. The telescopic mechanism 400 can drive the shaft sleeve 200 to move through its own telescopic function, thereby adjusting the relative position of the tooth disc 300 and the middle shaft 100, and further adjusting the relative position between the tooth disc 300 and the freewheel 1100, so as to adjust the included angle between the chain and the tooth disc 300.

[0050] The above-mentioned electric control driving unit 902 can drive the telescopic mechanism 400 to operate, so as to make the telescopic mechanism 400 telescopic to drive the shaft sleeve 200 and / or the tooth disc 300 to move, so as to adjust the relative position between the tooth disc 300 and the freewheel 1100, and further adjust the included angle between the chain and the tooth disc 300.

[0051] The above-mentioned electric control driving unit 902 is controlled by the main controller 1201, that is, the electric control driving unit 902 can be operated by the main controller 1201 to work.

[0052] Specifically, the electric control driving unit 902 also has different settings according to the type of the telescopic mechanism 400. For example, when the telescopic mechanism 400 is a hydraulic cylinder, the electric control driving unit 902 can be a hydraulic driving system, and the main controller 1201 drives the telescopic movement of the piston rod of the hydraulic cylinder by adjusting the injection of the hydraulic driving system into the rodless cavity and the rod cavity of the hydraulic cylinder. When the telescopic mechanism 400 is a pneumatic cylinder, the electric control driving unit 902 can be a pneumatic driving system, and the main controller 1201 adjusts the working state of the pneumatic cylinder by adjusting the inflation state of the pneumatic driving system. When the telescopic mechanism 400 is an electric push rod, the electric control driving unit 902 can be a power supply unit, and the main controller 1201 adjusts the telescopic state of the electric push rod by adjusting the power supply state of the power supply unit. In some scenarios, the power supply unit can only supply power, and the main controller 1201 directly sends a control signal to the electric push rod for telescopic control. The specific selection can be adjusted according to actual needs.

[0053] The main controller 1201 described above can also directly realize automatic adjustment of the position of the shaft sleeve 200, so that the tooth disc 300 is always in an optimal relative position with the flywheel 1100. For example, when there is no position detection function, the power-on time of the electric control driving unit 902 can be directly controlled to complete the tooth disc position adjustment. For example, power-on for 1S can move a displacement corresponding to one gear position. At the same time, in order to more accurately complete the tooth disc 300 displacement control, the tooth disc 300 can be controlled to return to zero position (for example, the leftmost end or the rightmost end) after each use of the bicycle, so as to avoid cumulative errors.

[0054] The driving mechanism composed of the electric control driving unit 902 and the telescopic mechanism 400 is a mechanism that is actively adjusted, and therefore, the movement of the shaft sleeve 200 can be limited, that is, the shaft sleeve 200 will not passively move due to the traction of the chain, thereby improving the riding stability.

[0055] In some embodiments, referring to Figure 1 , the plurality of state detection units at least include:

[0056] The lactic acid detection device 1207 is in communication connection with the main controller 1201 and is used for detecting the lactic acid of the human body; and / or,

[0057] The heart rate detection device 1208 is in communication connection with the main controller 1201 and is used for detecting the heart rate of the human body; and / or,

[0058] The blood pressure detection device 1209 is in communication connection with the main controller 1201 and is used for detecting the blood pressure of the human body.

[0059] In this embodiment, considering that the state of lactic acid, heart rate and blood pressure can effectively reflect the functional state of the human body, the lactic acid detection device 1207, the heart rate detection device 1208 and the blood pressure detection device 1209 are introduced to realize the detection of the lactic acid, heart rate and blood pressure of the rider, so that when the lactic acid, heart rate and blood pressure are high, the gear can be lowered in time to avoid injury to the rider, and when it is judged that the state of the rider is good, the gear can be raised, and the like.

[0060] It should be noted that in actual application, one or more of the lactic acid detection device 1207, the heart rate detection device 1208 and the blood pressure detection device 1209 can be selected according to actual needs, and multiple devices do not have to be selected at the same time.

[0061] In addition, it should be noted that the aforementioned process of determining the physical state or functional state of the rider by using the output torque and pedal frequency can be understood as that when one or more of the parameters of lactic acid, heart rate and blood pressure are added, the output torque and pedal frequency obtained in the foregoing can be comprehensively considered, for example, the product of three or more parameters, and the calculation value of the result of the weighted calculation of three or more parameters can be used to control the gear position, and the specific control mode can refer to the aforementioned torque and pedal frequency control mode. It can also be understood that any two parameters of torque, pedal frequency, lactic acid, heart rate and blood pressure can be directly referred to the control gear shifting process of torque and pedal frequency to complete the control.

[0062] The aforementioned lactic acid detection device 1207, the heart rate detection device 1208 and the blood pressure detection device 1209 can all directly use mature products on the market.

[0063] In some embodiments, the lactic acid detection device 1207, the heart rate detection device 1208 and the blood pressure detection device 1209 can all be arranged on the smart wearable device, and the collected data can be transmitted to the main controller 1201 through the smart wearable device by wireless communication.

[0064] In some embodiments, referring to Figure 1 , the plurality of state detection units further include:

[0065] The torque detection unit 1204 is in communication connection with the main controller 1201, and is configured to detect the output torque of the human body pedaling; and / or,

[0066] The pedal frequency detection unit 1205 is in communication connection with the main controller 1201, and is configured to detect the pedal frequency of the human body pedaling the crank.

[0067] The aforementioned torque detection unit 1204 can be a torque sensor, a stress sensor or the like, and can be installed on the crank, the intermediate shaft 100 or the like to realize the torque formed by the rider pedaling the crank.

[0068] The above-mentioned pedaling frequency detection unit 1205 can be a pressure sensor, an angular velocity sensor, a photoelectric sensor, a contact sensor, etc., and can determine the pedaling frequency of the rider by directly detecting the rotation frequency of the crank, the chainring 300, etc.

[0069] In this embodiment, considering that the output torque and the pedaling frequency can also reflect the riding state, the torque detection unit 1204 and the pedaling frequency detection unit 1205 are introduced to enrich the ways of detecting the riding state of the rider and to better adapt to the needs of different scenarios.

[0070] It should be noted that the output torque and the pedaling frequency are also the detection results of the state detection unit, and therefore, when the output torque and the pedaling frequency are needed, they can also be comprehensively considered together with the previously obtained lactic acid and heart rate, for example, the product of three or four of them, and the calculation value of the result of the weighted calculation of three or four of them can be used to perform gear control, and the specific control mode can refer to the control mode of the previously mentioned lactic acid and heart rate. It can also be understood that any two parameters selected from the output torque, the pedaling frequency, the lactic acid, the heart rate, and the blood pressure can be directly controlled by referring to the control gear shifting process of the lactic acid and the heart rate.

[0071] In some embodiments, the torque detection unit 1204 is arranged on the crank and / or the chainring 300 and / or the middle shaft 100; and / or,

[0072] The pedaling frequency detection unit 1205 is arranged on the crank and / or the chainring 300 and / or the middle shaft 100.

[0073] The torque detection unit 1204 described above is arranged on the crank, the chainring 300, or the middle shaft 100, and theoretically, it can achieve detection of the torque. Although the values directly detected by being arranged at different positions can be different, they can be preprocessed by simple mathematical operations to obtain the output torque formed by the rider pedaling the pedal.

[0074] The torque detection unit 1204 described above can include a plurality of torque sensors, in which case, torque sensors can be arranged at multiple positions of the crank, the chainring 300, and the middle shaft 100. Subsequently, after normalization processing, mean value calculation can be performed to obtain the torque closest to the true torque and eliminate errors caused by a single sensor.

[0075] The torque detection unit 1204 described above is arranged on the crank, the chainring 300, or the middle shaft 100, and theoretically, it can achieve detection of the torque. Although the values directly detected by being arranged at different positions are different, they can be preprocessed to obtain the torque formed by the rider pedaling the pedal.

[0076] The above-mentioned pedaling frequency detection unit 1205 can include a plurality of pedaling frequency sensors, in which case, torque sensors can be arranged at multiple positions of the crank, the chainring 300, and the middle shaft 100. Subsequently, after normalization processing, mean value calculation can be performed to obtain the pedaling frequency closest to the true value and eliminate errors caused by single sensor acquisition.

[0077] In some embodiments, multiple lactic acid detection devices 1207, heart rate detection devices 1208, and blood pressure detection devices 1209 can be provided, so that multiple acquisition values can be obtained for mean value calculation, thereby avoiding errors caused by single sensor sampling.

[0078] In some embodiments, the intelligent gear shifting system further comprises:

[0079] The human-computer interaction unit 1206 is in communication connection with the main controller 1201.

[0080] In the present embodiment, further considering that individual physical qualities are different and that the bicycle can be used by multiple people, the human-computer interaction unit 1206 can be additionally provided to adjust the pre-set threshold value or threshold value range, so as to better meet the use requirements of different riders.

[0081] It should be noted that in the case of other smart terminals, the rider can also transmit instructions for modifying the pre-set threshold value or threshold value range to the main controller 1201 through other smart terminals to complete the adjustment of the pre-set threshold value or threshold value range.

[0082] In addition, the provision of the human-computer interaction unit 1206 can also allow the rider to understand some related parameters of the bicycle or the rider that can be displayed on the interaction interface, such as the chainring position, the derailleur 1100 gear position, the pedaling frequency, the output torque, and the like.

[0083] In some embodiments, with reference to Figure 1 The electric chainring device further comprises:

[0084] The position detection unit 1202 is in electrical connection with the main controller 1201 and is used to obtain the position of the chainring 300 on the middle shaft 100.

[0085] In the present embodiment, the position detection unit 1202 can be provided to directly determine the current position of the chainring 300, thereby facilitating the main controller 1201 to adaptively adjust the chainring position according to the current gear position information of the derailleur 1100. Generally, the chainring 300 will correspond to the gear corresponding to the current gear position of the derailleur 1100 as much as possible, so as to reduce the inclination angle of the chain.

[0086] The position detection unit 1202 can be arranged in various forms. For example, a laser radar arranged on the frame 800 can be used to detect the distance between the frame 800 and the toothed disc 300, and then the position of the toothed disc 300 on the central shaft 100 can be determined by simple addition and subtraction operation. Alternatively, an ultrasonic sensor or other non-contact sensor can be used for detection. In addition, a displacement sensor can be used to directly detect the extension distance of the extension end of the telescopic mechanism 400. The specific detection method is not limited in the embodiment.

[0087] In some embodiments, the position detection unit 1202 includes a displacement sensor electrically connected to the main controller 1201, and the displacement sensor is used to detect the extension distance of the extension end of the telescopic mechanism 400.

[0088] In the embodiment, the displacement sensor is used to directly detect the extension distance of the extension end of the telescopic mechanism 400, for example, the extension distance of the piston rod of the hydraulic cylinder or the screw rod of the electric push rod. This can effectively reduce the interference of external factors on detection, improve the accuracy of detection, and effectively reduce the damage of external impact to the position detection unit 1202.

[0089] In some embodiments, the electric toothed disc device further includes:

[0090] The power storage unit is used to provide power for the electric control driving unit 902 and the main controller 1201.

[0091] In the embodiment, the power storage unit is directly used as a power source, for example, a lithium battery or other storage battery. This can effectively improve the user experience, and the user does not need to use an external mobile power supply for power supply.

[0092] In some embodiments, the electric control driving unit 902 and the main controller 1201 can be powered by a mobile power supply.

[0093] In some embodiments, the electric toothed disc device further includes:

[0094] The wireless communication module 1203 is electrically connected to the main controller 1201.

[0095] The wireless communication module 1203 can realize wireless communication with the outside world. For example, the current relative position of the toothed disc 300 can be transmitted to the outside world through the wireless communication module 1203. In addition, the data collected by the main controller 1201 on the remaining bicycles can be uploaded to the cloud for storage and record, so as to provide more in-depth services for users in the future.

[0096] The wireless communication module 1203 can be a Bluetooth, WIFI or other wireless communication module 1203. The specific type can be selected according to actual needs.

[0097] In some embodiments, the electric toothed disc device further comprises:

[0098] The assembly seat 700 is arranged on the frame 800, and the assembly seat 700 is provided with a mounting hole 701, the middle shaft 100 is rotatably arranged in the mounting hole 701, and a clearance cavity 702 is formed between the hole wall of the mounting hole 701 and the outer peripheral wall of the middle shaft 100, and the shaft sleeve 200 extends into the clearance cavity 702.

[0099] The assembly seat 700 can be detachably arranged on the frame 800, for example, the assembly seat 700 can be clamped on the frame 800 or arranged on the frame 800 by fasteners. The assembly seat 700 is provided with a mounting hole 701 extending in the horizontal direction, and both ends of the mounting hole 701 can be arranged through. The middle shaft 100 can be arranged in the mounting hole 701 through a bearing system to realize rotation of the middle shaft 100, and the outer diameter of the middle shaft 100 can be smaller than the hole diameter of the mounting hole 701 close to the toothed disc 300, so that a clearance cavity 702 is formed between the hole wall of the mounting hole 701 and the outer peripheral wall of the middle shaft 100. The shaft sleeve 200 can have part of the structure extending into the clearance cavity 702 when moving to any position along the axial direction of the middle shaft 100; the shaft sleeve 200 can have part of the structure extending into the clearance cavity 702 when moving to a part of the position close to the assembly seat 700, and the shaft sleeve 200 is located outside one end of the assembly seat 700 as a whole when moving to a part of the position away from the assembly seat 700. The specific length of the shaft sleeve 200 can be flexibly adjusted according to actual needs, which will not be described here.

[0100] In the embodiment, the entire electric toothed disc device can be arranged as an assembly structure, and the entire electric toothed disc device can be quickly installed and replaced through the assembly seat 700 to provide better use experience for the user. In addition, compared with the shaft sleeve 200 moving back and forth outside one end of the assembly seat 700, in the present application, the clearance cavity 702 is formed between the hole wall of the mounting hole 701 and the outer peripheral wall of the middle shaft 100, and the shaft sleeve 200 can extend into the clearance cavity 702, so that not only the moving path of the shaft sleeve 200 is longer, thereby making the adjustment range of the toothed disc 300 along the axial direction of the middle shaft 100 larger, but also the shaft sleeve 200 can extend longer along the axial direction of the middle shaft 100, thereby making the structural strength of the shaft sleeve 200 higher, and the installation stability of the shaft sleeve 200 better, which can reduce the shaking of the toothed disc 300, thereby further improving the riding experience.

[0101] It can be understood that if the shaft sleeve 200 can only move back and forth at one end of the assembly seat 700, not only the moving path of the shaft sleeve 200 is short, but also since the distance between the end of the shaft 100 and the assembly seat 700 is certain, in order to make the shaft sleeve 200 move along the axial direction of the shaft 100 by a displacement, the length of the shaft sleeve 200 can only be set to be short, so that not only the structural strength is low, but also the stability is poor, the tooth disc 300 is easy to shake, and the riding experience is affected. In the present application, the accommodation cavity 702 for the shaft sleeve 200 to extend into is formed between the hole wall of the mounting hole 701 and the outer peripheral wall of the shaft 100, which can effectively solve the above problems.

[0102] In some embodiments, as shown in Figure 3 , the tooth disc 300 can be installed at the end of the shaft sleeve 200 away from the assembly seat 700, and when the shaft sleeve 200 moves along the axial direction of the shaft 100 to any position, the end of the shaft sleeve 200 away from the tooth disc 300 is located in the accommodation cavity 702.

[0103] In the present embodiment, such setting not only makes the shaft sleeve 200 extend along the axial direction of the shaft 100 longer, and further makes the structural strength of the shaft sleeve 200 higher, and at the same time, the installation stability of the shaft sleeve 200 is better, which can reduce the shaking of the tooth disc 300, thereby further improving the riding experience. In addition, it can also avoid the interference between the shaft sleeve 200 and the assembly seat 700 when the shaft sleeve 200 enters the accommodation cavity 702, so that the movement of the shaft sleeve 200 is more smooth.

[0104] In some embodiments, referring to Figure 3 , the electric tooth disc device further comprises:

[0105] The first bearing 500 is installed at the end of the mounting hole 701 away from the tooth disc 300;

[0106] The second bearing 600 is installed at the end of the mounting hole 701 close to the tooth disc 300;

[0107] The shaft 100 is rotatably installed in the first bearing 500 and the second bearing 600.

[0108] In the present embodiment, the rotation of the shaft 100 can be realized by using the first bearing 500 and the second bearing 600, which meets the rotation requirement of the shaft 100, and makes the rotation of the shaft 100 more smooth.

[0109] In some embodiments, as shown in Figure 3As shown, a limiting protrusion 103 is arranged on the outer circumferential wall of the middle shaft 100 and on the side of the first bearing 500 close to the shaft sleeve 200 to provide a restriction in one direction. Meanwhile, an axial locking structure 501 is arranged on the outer circumferential wall of the middle shaft 100 and on the side of the first bearing 500 away from the shaft sleeve 200 to achieve a restriction in the other direction of the first bearing 500, and at the same time, a restriction on the axial movement of the middle shaft 100 is also achieved. For example, the axial locking structure 501 can be an axial locking nut, and the outer circumferential wall of the end of the middle shaft 100 away from the shaft sleeve 200 can be provided with external threads, and the axial locking nut is threadedly connected with the middle shaft 100. Of course, the axial locking structure 501 can also be a locking ring, and the outer circumferential wall of the end of the middle shaft 100 away from the shaft sleeve 200 can be provided with a snap ring, and the axial locking is arranged in the snap ring.

[0110] In some embodiments, as shown in Figure 3 As shown, a first locking screw plug 502 is arranged on the assembly seat 700 or the frame 800 on the side of the first bearing 500 away from the shaft sleeve 200, and the first locking screw plug 502 is located on the outer circumferential side of the axial locking structure 501 to achieve the fixation of the first bearing 500. A second locking screw plug 601 can be arranged on the assembly seat 700 or the frame 800 on the side of the second bearing 600 away from the first bearing 500, and the second locking screw plug 601 can be located on the outer side of the shaft sleeve 200 to achieve the fixation of the second bearing 600.

[0111] It should be noted that when there is a gap between the first locking screw plug 502 and the axial locking structure 501, a first sealing ring 503 can be arranged between the first locking screw plug 502 and the axial locking structure 501. When there is a gap between the second locking screw plug 601 and the shaft sleeve 200, a second sealing ring 602 can be arranged between the second locking screw plug 601 and the shaft sleeve 200.

[0112] In some embodiments, the first bearing 500 can be a ball bearing.

[0113] In this embodiment, the ball bearing has the characteristics of strong axial bearing capacity, which can better bear the axial force when the tooth disc 300 moves, and the middle shaft 100 can be better fixed through the ball bearing.

[0114] It should be noted that the first bearing 500 can also be other suitable types of bearings, which will not be described here.

[0115] In some embodiments, the second bearing 600 is arranged as a needle bearing and is sleeved on the outer side of the shaft sleeve 200, and the shaft sleeve 200 can move relative to the second bearing 600 in the axial direction of the middle shaft 100.

[0116] The second bearing 600 can be a needle bearing without an inner ring. The end of the shaft sleeve 200 away from the gear disc 300 can extend into the second bearing 600 as the inner ring of the second bearing 600.

[0117] In the embodiment, the shaft sleeve 200 extends into the second bearing 600 and can rotate relative to the second bearing 600, thereby reducing the circumferential friction on the outer circumferential wall of the shaft sleeve 200, making the rotation of the shaft sleeve 200 more smooth, thereby improving the riding efficiency. In addition, since the second bearing 600 is a needle bearing, the shaft sleeve 200 can move along the axial direction of the central shaft 100 relative to the second bearing 600, thereby reducing the axial friction on the outer circumferential wall of the shaft sleeve 200, making the axial movement of the shaft sleeve 200 along the central shaft 100 more smooth, and the gear shifting of the gear disc 300 more smooth. In addition, the shaft sleeve 200 can also support the second bearing 600, making the installation of the second bearing 600 more stable.

[0118] It should be noted that the second bearing 600 can also be other suitable types of bearings, which will not be described here.

[0119] In some embodiments, referring to Figure 3 The central shaft 100 is provided with a mounting cavity 101, and the telescopic mechanism 400 is mounted in the mounting cavity 101. The outer circumferential wall of the central shaft 100 is provided with a displacement slot 102 communicating with the mounting cavity 101. The telescopic mechanism 400 is provided with a connecting piece 401, which is arranged in the displacement slot 102 and connected to the shaft sleeve 200 and / or the gear disc 300.

[0120] The mounting cavity 101 can extend along the axial direction of the central shaft 100. Taking the hydraulic cylinder as an example, the mounting cavity 101 can be divided into two parts, including a first cavity and a second cavity. The first cavity can be arranged away from the gear disc 300, and the second cavity can be arranged close to the gear disc 300. The first cavity can be used to mount the cylinder body part of the hydraulic cylinder, and the second cavity can be used to accommodate the piston rod of the hydraulic cylinder and the connecting piece 401.

[0121] The outer circumferential wall of the central shaft 100 is provided with a displacement slot 102 close to the shaft sleeve 200. The displacement slot 102 is connected with the mounting cavity 101. The displacement slot 102 can be arranged in a strip shape, and the length direction is consistent with the axial direction of the central shaft 100. In this way, the connecting piece 401 can be connected with the shaft sleeve 200 and / or the gear disc 300, and can also guide the connecting piece 401 to slide along the axial direction of the central shaft 100. At the same time, the arrangement of the displacement slot 102 can effectively prevent the relative rotation between the shaft sleeve 200 and the central shaft 100.

[0122] The above-mentioned accommodation slot 102 can be provided on the outer wall of the middle shaft 100 near the side of the shaft sleeve 200, and multiple accommodation slots 102 can be provided to increase the connection stability between the connecting piece 401 and the shaft sleeve 200 and / or the toothed disc 300. As shown in the figure, the middle shaft 100 is provided with two accommodation slots 102, and the upper and lower parts of the inner wall of the shaft sleeve 200 are connected to the connecting piece 401 through the accommodation slots 102. Figure 3 As shown in the figure, the middle shaft 100 is provided with two accommodation slots 102, and the upper and lower parts of the inner wall of the shaft sleeve 200 are connected to the connecting piece 401 through the accommodation slots 102.

[0123] In this embodiment, the installation cavity 101 is provided, which not only protects the telescopic mechanism 400 and avoids damage caused by exposure of the telescopic mechanism 400, but also makes the telescopic mechanism 400 closer to the axis of the middle shaft 100, generates smaller centrifugal force, and further causes smaller resistance to the rotation of the middle shaft 100, so that the rotation of the middle shaft 100 is smoother, and the riding efficiency of the bicycle user is further improved.

[0124] In some embodiments, referring to Figure 3 , the telescopic mechanism 400 is provided as a hydraulic cylinder or a pneumatic cylinder, and the electric toothed disc device further comprises:

[0125] The first medium conveying pipe 900 is connected to the telescopic mechanism 400.

[0126] The second medium conveying pipe 901 is rotatably connected to the first medium conveying pipe 900, and the second medium conveying pipe 901 is used to connect the electric control driving unit 902.

[0127] The above-mentioned telescopic mechanism 400 is a hydraulic cylinder or a pneumatic cylinder, which has simple structure, convenient installation and good telescopic effect.

[0128] Taking the telescopic mechanism 400 as an oil cylinder in the hydraulic cylinder as an example, the electric control driving unit 902 composed of an oil pump, an oil conveying pipe, an oil tank, an electromagnetic valve and the like can be further provided on the frame 800. The oil pump is arranged between the oil tank and the oil cylinder through the oil conveying pipe, and the oil pump can control the sliding of the piston rod by injecting or extracting oil into the rodless cavity of the oil cylinder and injecting or extracting oil into the rod cavity of the oil cylinder, thereby realizing telescopic extension.

[0129] The electric control driving unit 902 can be mounted on the frame 800 or the assembly seat 700. When the telescopic mechanism 400 is a hydraulic cylinder, the electric control driving unit 902 can include a hydraulic pump, and a liquid storage tank or the like can also be arranged on the frame 800 or the assembly seat 700. When the telescopic mechanism 400 is a pneumatic cylinder, the electric control driving unit 902 can be a gas pump. The telescopic mechanism 400 has a rodless cavity and a rod cavity. The first medium conveying pipe 900 can be two and respectively communicate with the rodless cavity and the rod cavity. The second medium conveying pipe 901 can be two and both are located outside the central shaft 100. The two second medium conveying pipes 901 are respectively rotationally connected with the two first medium conveying pipes 900. The ends of the two second medium conveying pipes 901 away from the first medium conveying pipes 900 are connected to the electric control driving unit 902.

[0130] In the embodiment, the electric control driving unit 902 injects or extracts the driving medium such as oil into or out of the rodless cavity and the rod cavity of the telescopic mechanism 400 through the first medium conveying pipe 900 and the second medium conveying pipe 901, so as to control the sliding of the piston rod and realize the telescopic movement of the telescopic mechanism 400. The structure is simple and the operation is convenient. In addition, the second medium conveying pipe 901 is rotationally connected with the first medium conveying pipe 900, so that when the first medium conveying pipe 900 rotates with the central shaft 100, the interference between the second medium conveying pipe 901 and the first medium conveying pipe 900 can be avoided, and the connectivity between the second medium conveying pipe 901 and the first medium conveying pipe 900 is better.

[0131] In some embodiments, the electric toothbrush device further comprises:

[0132] The assembly seat 700 is arranged on the frame 800. The assembly seat 700 is provided with a mounting hole 701. The central shaft 100 is rotationally arranged in the mounting hole 701. The first medium conveying pipe 900 is arranged in the central shaft 100. The second medium conveying pipe 901 is arranged in the assembly seat 700. The outside of the central shaft 100 is sleeved with a rotary joint 903. The first medium conveying pipe 900 is connected to the second medium conveying pipe 901 through the rotary joint 903.

[0133] The first medium conveying pipe 900 can be arranged in the central shaft 100. The second medium conveying pipe 901 can be arranged in the assembly seat 700. The rotary joint 903 can be annular. The rotary joint 903 can include an inner sleeve and an outer sleeve. The inner sleeve and the outer sleeve can rotate relative to each other. An annular channel is formed between the inner sleeve and the outer sleeve. The inner sleeve can be fixedly connected to the central shaft 100 and connected to the first medium conveying pipe 900. The outer sleeve can be fixedly connected to the assembly seat 700 and connected to the second medium conveying pipe 901. The first medium conveying pipe 900 and the second medium conveying pipe 901 both communicate with the annular channel.

[0134] In the embodiment, the communication between the first medium conveying pipe 900 and the second medium conveying pipe 901 can be realized through the annular channel of the rotary joint 903, and the rotary joint 903 can realize the rotary connection between the second medium conveying pipe 901 and the first medium conveying pipe 900 due to the relative rotation between the inner sleeve and the outer sleeve of the rotary joint 903, and the structure is simple, the sealing performance is good, and the second medium conveying pipe 901 can be in communication with the first medium conveying pipe 900 when the middle shaft 100 rotates to any angle, and the practicability is better.

[0135] It should be noted that, in some embodiments, the second medium conveying pipe 901 and the first medium conveying pipe 900 can also be rotatably connected through other ways. For example, an annular groove can be arranged on the outer circumferential wall of the middle shaft 100, the annular groove surrounds the middle shaft 100 along the circumferential direction of the middle shaft 100, the hole wall of the mounting hole 701 of the assembly seat 700 covers the annular groove to form an annular channel, and the first medium conveying pipe 900 and the second medium conveying pipe 901 are in communication with the annular channel, so that the rotary connection between the second medium conveying pipe 901 and the first medium conveying pipe 900 can be realized. In addition, the hole wall of the mounting hole 701 of the assembly seat 700 can also be provided with an annular groove, the annular groove surrounds the middle shaft 100 along the circumferential direction of the middle shaft 100, the outer circumferential wall of the middle shaft 100 covers the annular groove to form an annular channel, and the first medium conveying pipe 900 and the second medium conveying pipe 901 are in communication with the annular channel, so that the rotary connection between the second medium conveying pipe 901 and the first medium conveying pipe 900 can also be realized. In addition, the outer circumferential wall of the middle shaft 100 and the hole wall of the mounting hole 701 of the assembly seat 700 can also be provided with annular grooves, the two annular grooves are butted to form an annular channel, and the first medium conveying pipe 900 and the second medium conveying pipe 901 are in communication with the annular channel, so that the rotary connection between the second medium conveying pipe 901 and the first medium conveying pipe 900 can also be realized.

[0136] It can be understood that the first medium conveying pipe 900 can be directly arranged on the middle shaft 100, and the second medium conveying pipe 901 can be directly arranged on the assembly seat 700, or a first medium conveying channel can be arranged on the middle shaft 100, the first medium conveying channel serves as part of the structure of the first medium conveying pipe 900, a second medium conveying channel is arranged on the assembly seat 700, and the second medium conveying channel serves as part of the structure of the second medium conveying pipe 901.

[0137] In some embodiments, the length of the shaft sleeve 200 along the axial direction of the shaft sleeve 200 is 1.2 to 3 times the moving stroke of the shaft sleeve 200.

[0138] The length of the bushing 200 along its own axial direction is 1.2 to 3 times the travel of the bushing 200. For example, the length of the bushing 200 along its own axial direction can be 1.2, 2, 2.5, 3 times, or other suitable multiples of the travel of the bushing 200. This not only avoids the bushing 200 being too long, resulting in a too low travel and thus affecting the shifting effect of the gearbox 300, but also avoids the bushing 200 being too short, resulting in a decrease in structural strength and unstable installation.

[0139] In some implementations, such as Figure 3 As shown, a key structure is installed between the central shaft 100 and the bushing 200, and the key structure restricts the relative rotation of the central shaft 100 and the bushing 200. For example, both the outer peripheral wall of the central shaft 100 and the inner peripheral wall of the bushing 200 may be provided with keyways, the keyways extending along the axial direction of the central shaft 100, and the key structure is installed in both keyways and can slide relative to the keyways along the axial direction of the central shaft 100. Alternatively, one of the outer peripheral wall of the central shaft 100 and the inner peripheral wall of the bushing 200 may be provided with a keyway, the keyway extending along the axial direction of the central shaft 100, and the key structure is installed in the other and extends into the keyway, the key structure being able to slide relative to the keyway along the axial direction of the central shaft 100.

[0140] In this embodiment, the key structure can restrict the relative rotation between the central shaft 100 and the bushing 200, thereby enabling the central shaft 100 to drive the toothed disc 300 on the bushing 200 to rotate.

[0141] This application also provides a bicycle that includes the intelligent gear shifting system described above. Because the bicycle has an intelligent gear shifting system, it possesses all the beneficial effects of such a system.

[0142] The above are merely specific embodiments of this application. Those skilled in the art can clearly understand that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. An intelligent transmission system, characterized by, The application relates to an intelligent variable-speed system for a bicycle, which comprises the following parts: a plurality of state detection units, each of which is used for collecting at least one of bicycle operation parameters and / or at least one of human body function parameters; a main controller which is electrically connected with the plurality of state detection units respectively; a flywheel variable-speed device which is connected with the main controller and is used for adjusting the gear position of the flywheel; an electric toothed disc device which comprises a middle shaft, a shaft sleeve, an extension mechanism and an electric control driving unit; the middle shaft is used for being rotatably installed on a bicycle frame; the shaft sleeve is sleeved on the middle shaft and can move along the axial direction of the middle shaft, the shaft sleeve is relatively fixed with the middle shaft in the circumferential direction of the middle shaft, the shaft sleeve is provided with a toothed disc; the extension mechanism is arranged in the middle shaft and is connected with the shaft sleeve and / or the toothed disc; the electric control driving unit is arranged on the bicycle frame and is used for driving the extension mechanism to work, so that the extension mechanism drives the shaft sleeve to move along the axial direction of the middle shaft through extension and contraction; the shaft sleeve can rotate relative to the extension mechanism; the electric control driving unit is electrically connected with the main controller.

2. The intelligent transmission system of claim 1, wherein, The plurality of state detection units at least comprise: a lactic acid detection device which is communicatively connected with the main controller and is used for detecting the lactic acid of a human body; and / or a heart rate detection device which is communicatively connected with the main controller and is used for detecting the heart rate of a human body; and / or a blood pressure detection device which is communicatively connected with the main controller and is used for detecting the blood pressure of a human body.

3. The intelligent shifting system of claim 1 or 2, wherein, The plurality of state detection units comprise: a torque detection unit which is communicatively connected with the main controller and is used for detecting the output torque of a human body when the human body pedals; and / or a pedaling frequency detection unit which is communicatively connected with the main controller and is used for detecting the pedaling frequency of a pedal crank.

4. The intelligent shifting system of claim 3, wherein, The torque detection unit is arranged on the pedal crank and / or the toothed disc and / or the middle shaft; and / or The pedaling frequency detection unit is arranged on the pedal crank and / or the toothed disc and / or the middle shaft.

5. The intelligent transmission system of claim 1, wherein, The intelligent variable-speed system further comprises: a man-machine interaction unit which is communicatively connected with the main controller.

6. The intelligent shifting system of claim 1, wherein, The electric toothed disc device further comprises: a position detection unit which is electrically connected with the main controller and is used for acquiring the position of the toothed disc on the middle shaft.

7. The intelligent shifting system of claim 1, wherein, The middle shaft is provided with a mounting cavity, the extension mechanism is arranged in the mounting cavity, the outer circumferential wall of the middle shaft is provided with a clearance slot which is communicated with the mounting cavity, the extension mechanism is provided with a connecting piece, and the connecting piece is arranged in the clearance slot and is connected with the shaft sleeve and / or the toothed disc.

8. The intelligent shifting system of claim 1, wherein, The extension mechanism is arranged as a hydraulic cylinder or a pneumatic cylinder, and the electric toothed disc device further comprises: a first medium conveying pipe which is connected with the extension mechanism; a second medium conveying pipe which is rotatably connected with the first medium conveying pipe, and is used for being connected with the electric control driving unit.

9. The intelligent shifting system of claim 8, wherein, The electric toothed disc device further comprises: an assembly seat which is used for being mounted on the bicycle frame, the assembly seat is provided with a mounting hole, the middle shaft is rotatably mounted in the mounting hole, the first medium conveying pipe is arranged in the middle shaft, the second medium conveying pipe is arranged in the assembly seat, the outer side of the middle shaft is sleeved with a rotary joint, and the first medium conveying pipe is connected with the second medium conveying pipe through the rotary joint.

10. A bicycle characterized in that, The application further relates to an intelligent variable-speed system as claimed in any one of claims 1 to 9.

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