Intelligent variable speed control system, bicycle and bicycle variable speed system

Abstract

The utility model discloses an intelligent variable speed control system, a bicycle and a bicycle variable speed system.By arranging a plurality of state detection units, bicycle operation parameters and / or human body function parameters can be obtained, then the riding state of a rider can be determined, meanwhile, a variable speed controller is connected to a flywheel variable speed device, and therefore the riding state of the rider can be determined. Therefore, the variable speed controller has the capability of controlling the flywheel speed change device to shift gears so as to achieve the purpose of adjusting the flywheel gears, and moreover, due to the fact that the riding state of a rider can be determined through the bicycle running parameters and the human body function parameters, self-adaptive adjustment of the flywheel gears can be completed in the riding process of the rider, and the riding experience of the rider is improved. A rider can be in a comfortable state or a state expected by the rider as much as possible in the riding process.

Description

TECHNICAL FIELD

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

[0002] At present, the gear adjustment of a variable speed bicycle mainly depends on the manual operation of a rider. During riding, when encountering changes in slope and speed adjustment, the rider must rely on his own experience to determine the timing of gear shifting. This mode of operation requires a high level of experience from the rider, especially novice riders often have difficulty accurately determining the best timing for gear shifting. If the operation is not successful, it will not only cause a noticeable jerk during riding, increase physical exertion and reduce the comfort of riding, but also greatly hinder the popularization process of variable speed bicycles and limit their application in a wider population. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide an intelligent gear control system, a bicycle and a bicycle gear system to improve the riding efficiency of bicycle riders.

[0004] The intelligent gear control 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 the bicycle operating parameters and / or at least one of the human body function parameters;

[0006] a gear control unit electrically connected to the plurality of state detection units; the gear control unit is also used to electrically connect to the freewheel gear device of the bicycle.

[0007] The bicycle gear system according to the second aspect of the present application comprises:

[0008] the intelligent gear control system according to the first aspect;

[0009] a freewheel gear device connected to the gear control unit for adjusting the gear position of the freewheel.

[0010] The bicycle according to the third aspect of the present application comprises the bicycle gear system according to the first aspect.

[0011] The intelligent gear shifting control system, the bicycle and the bicycle gear shifting system provided by the embodiments of the present application can obtain the bicycle operation parameters and / or the human body function parameters through the plurality of state detection units, and then can determine the riding state of the rider. Meanwhile, the gear shifting controller is connected to the freewheel gear shifting device, so that the gear shifting controller can control the gear shifting of the freewheel gear shifting device, so as to achieve the purpose of adjusting the freewheel gear position. Moreover, the riding state of the rider can be determined by using the bicycle operation parameters and the human body function parameters, so that the adaptive adjustment of the freewheel gear position can be completed during the riding of the rider, so that the rider can be in a more comfortable state or the expected state as much as possible during the riding.

[0012] 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

[0013] 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:

[0014] Figure 1 An electrical system diagram of the intelligent gear shifting control system provided by the embodiments of the present application;

[0015] Figure 2 A schematic diagram of the overall structure of the tooth disc moving mechanism provided by the embodiments of the present application;

[0016] Figure 3 A partial sectional view of the tooth disc moving mechanism provided by the embodiments of the present application;

[0017] Figure 4 An electrical system diagram of the tooth disc moving mechanism provided by the embodiments of the present application.

[0018] Reference Signs:

[0019] First bearing 110; second bearing 120; axial locking structure 130; first locking plug 140; first sealing ring 150; second locking plug 160; second sealing ring 170;

[0020] Middle shaft 200;

[0021] Shaft sleeve 300;

[0022] Electric drive mechanism 410; drive motor 411; speed reducer 412; electric control module 413; wireless communication module 414; power storage module 415; drive lead screw 420; moving part 430;

[0023] Assembly seat 500;

[0024] Frame 600;

[0025] The pedal plate 700;

[0026] The crank connecting shaft 800;

[0027] The flywheel 900;

[0028] The torque detection unit 1010; the pedaling frequency detection unit 1020; the gear shifting controller 1030; the human-computer interaction unit 1040; the lactic acid detection device 1050; the heart rate detection device 1060; and the blood pressure detection device 1070. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference 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 implying the number of the indicated technical features or implying 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 in detail below with reference to 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 The intelligent gear shifting control system provided by an embodiment of the present application, the intelligent gear shifting control system comprises:

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

[0036] The variable speed controller 1030 is electrically connected with the plurality of state detection units respectively, and is also electrically connected with the freewheel variable speed device of the bicycle.

[0037] In the embodiment, the plurality of state detection units are arranged to obtain the bicycle operating parameters and / or the human function parameters, and then the riding state of the rider can be determined. Meanwhile, the variable speed controller 1030 is connected to the freewheel variable speed device, so that the variable speed controller 1030 has the ability to control the gear shifting of the freewheel variable speed device, to achieve the purpose of adjusting the gear position of the freewheel 900. Moreover, the riding state of the rider can be determined by using the bicycle operating parameters and the human function parameters, so that the adaptive adjustment of the gear position of the freewheel 900 can be completed during the riding process of the rider, and the rider can be in a more comfortable state or the expected state as much as possible during the riding process.

[0038] The bicycle operating parameters can include the driving speed, the wheel speed, the pedaling frequency, the torque and other parameters that can be directly detected on the bicycle. The specific types are selected flexibly according to the actual needs. In many common scenarios, the pedaling frequency and the torque can meet the requirements.

[0039] The human function parameters can include the blood pressure, the lactic acid, the heart rate, the blood oxygen content and other parameters that need to be detected on the rider. The specific types are selected flexibly according to the actual needs. In many common scenarios, the lactic acid and the heart rate can meet the requirements.

[0040] After the variable speed controller 1030 is electrically connected with the plurality of state detection units, the bicycle operating parameters and / or the human function parameters collected by the plurality of state detection units can be directly obtained. The specific types and quantities are determined according to the types of the sensors corresponding to the plurality of state detection units and the speed of each type.

[0041] After the variable speed controller 1030 is electrically connected with the freewheel variable speed device of the bicycle, the adjustment of the gear position of the freewheel 900 can be completed by the variable speed controller 1030.

[0042] The freewheel variable speed device can directly use the mature electric freewheel variable speed mechanism on the market for controlling the gear shifting of the freewheel 900, or other forms of electrically controllable freewheel variable speed mechanism. For example, the common electric freewheel variable speed mechanism can start the gear shifting operation by a simple control instruction.

[0043] It should be noted that the bicycle operating parameters and the human body function parameters can reflect the body 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 more forceful, 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 difficult, lactic acid can directly reflect the current anaerobic exercise of the rider or the fatigue state, generally the higher the lactic acid, the more prominent the anaerobic exercise or the more fatigue, the 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 principle, the current riding state of the rider can be effectively determined by comprehensively combining the bicycle operating parameters and the human body function parameters, and then the sprocket 900 is controlled to be shifted up when the human body is in labor, and the sprocket 900 is controlled to be shifted down when it is too easy. How to determine the riding state by using the bicycle operating parameters and the human body function parameters can be more specific, generally multiplication operation, weighted operation and the like can be directly used, or some fixed calculation model can be used, for example, the product of lactic acid and heart rate can be directly used, and whether it is in a more ideal riding state can be determined based on the product and the pre-set threshold value or threshold value range, for example, the sprocket can be shifted up when the product is greater than the pre-set threshold value or threshold value range, and the sprocket can be shifted down when the product is less than the pre-set threshold value or threshold value range. 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 value or threshold value range can be obtained in some scenes, and then the calculation value and the pre-set threshold value or threshold value range are used to complete the determination. The specific applicable manner is more, and the specific manner to be used is selected by the user according to the actual demand.

[0044] In some embodiments, referring to Figure 1 , the plurality of state detection units at least include:

[0045] The lactic acid detection device 1050 is in communication connection with the speed control device 1030, and is used for detecting the lactic acid of the human body; and / or,

[0046] The heart rate detection device 1060 is in communication connection with the speed control device 1030, and is used for detecting the heart rate of the human body; and / or,

[0047] The blood pressure detection device 1070 is in communication connection with the speed control device 1030, and is used for detecting the blood pressure of the human body.

[0048] In this embodiment, considering that the state of lactic acid, heart rate and blood pressure can effectively reflect the function state of the human body, a lactic acid detection device 1050, a heart rate detection device 1060 and a blood pressure detection device 1070 are introduced to detect the lactic acid, heart rate and blood pressure of the rider, so that the rider can be timely downshifted when the lactic acid, heart rate and blood pressure are high to avoid injury to the rider, and the rider can be upshifted when the rider is in good condition, and the like.

[0049] It should be noted that in actual application, one or more of the lactic acid detection device 1050, the heart rate detection device 1060 and the blood pressure detection device 1070 can be selected according to actual needs, and multiple devices do not have to be selected at the same time.

[0050] In addition, it should be noted that the aforementioned process of determining the physical state or function state of the rider by using lactic acid and heart rate can be understood as that when the blood pressure parameter is added, the lactic acid and heart rate obtained in the foregoing can be comprehensively considered, for example, the product of the three can be used to control the gear position, and the control mode can refer to the aforementioned control mode of lactic acid and heart rate. It can also be understood that any two parameters of lactic acid, heart rate and blood pressure can be directly used to control the gear shift process.

[0051] The aforementioned lactic acid detection device 1050, heart rate detection device 1060 and blood pressure detection device 1070 can all be directly used as mature products on the market.

[0052] In some embodiments, the lactic acid detection device 1050, the heart rate detection device 1060 and the blood pressure detection device 1070 can all be arranged on a smart wearable device, and the collected data can be transmitted to the speed controller 1030 through wireless communication by the smart wearable device.

[0053] In some embodiments, referring to Figure 1 , the plurality of state detection units further include:

[0054] The torque detection unit 1010 is in communication connection with the speed controller 1030, and is configured to detect the output torque of the human body pedaling; and / or,

[0055] The pedaling frequency detection unit 1020 is in communication connection with the speed controller 1030, and is configured to detect the pedaling frequency of the human body pedaling the crank.

[0056] The aforementioned torque detection unit 1010 can be a torque sensor, a stress sensor or the like, which can be installed at the crank, the middle shaft 200 or the like to detect the torque formed by the rider pedaling the crank.

[0057] The above-mentioned pedaling frequency detection unit 1020 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 700, etc.

[0058] In this embodiment, considering that the output torque and the pedaling frequency can also reflect the riding state, the torque detection unit 1010 and the pedaling frequency detection unit 1020 are introduced to enrich the ways of detecting the riding state of the rider and better adapt to the needs of different scenarios.

[0059] 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 aforementioned acquired lactic acid and heart rate, for example, the gear control can be performed by using the product of three or four of them, as well as the calculation value of the result of the weighted calculation of three or four of them, and the specific control mode can refer to the aforementioned lactic acid and heart rate control mode. 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.

[0060] In some embodiments, the intelligent gear shifting control system further comprises:

[0061] The human-computer interaction unit 1040 is in communication connection with the gear shifting controller 1030.

[0062] In this embodiment, further considering that the physical qualities of individuals are different and the bicycle can be used by multiple people, the human-computer interaction unit 1040 can be additionally provided to adjust the pre-set threshold value or threshold value range, so as to better meet the use needs of different riders.

[0063] It should be noted that in the case of having other intelligent terminals, the rider can also transmit the instruction for modifying the pre-set threshold value or threshold value range to the gear shifting controller 1030 through the other intelligent terminals to complete the adjustment of the pre-set threshold value or threshold value range.

[0064] In some embodiments, the torque detection unit 1010 is arranged on the crank and / or the chainring 700 and / or the middle shaft 200; and / or,

[0065] The pedaling frequency detection unit 1020 is arranged on the crank and / or the chainring 700 and / or the middle shaft 200.

[0066] The torque detection unit 1010 described above is arranged on the crank, the chainring 700, or the middle shaft 200, and theoretically, the detection of the torque can be realized. Although the values directly detected by being arranged at different positions can be different, they can all be pre-processed by simple mathematical operations to obtain the output torque formed by the rider pedaling the pedal.

[0067] The torque detection unit 1010 can include multiple torque sensors, in which case, torque sensors can be arranged at multiple positions of the crank, the chainring 700, and the middle shaft 200. Subsequently, after normalization processing, mean value calculation can be performed to obtain the most accurate torque and eliminate errors caused by individual sensor acquisition.

[0068] The torque detection unit 1010 can be arranged on the crank, the chainring 700, or the middle shaft 200, and theoretically, torque detection can be achieved. Although the values directly detected at different positions are different, they can be obtained by simple preprocessing to represent the torque formed by the rider pedaling the pedal.

[0069] The pedal frequency detection unit 1020 can include multiple pedal frequency sensors, in which case, pedal frequency sensors can be arranged at multiple positions of the crank, the chainring 700, and the middle shaft 200. Subsequently, after normalization processing, mean value calculation can be performed to obtain the most accurate pedal frequency and eliminate errors caused by individual sensor acquisition.

[0070] In some embodiments, multiple lactate detection devices 1050, heart rate detection devices 1060, and blood pressure detection devices 1070 can be arranged, so that multiple acquisition values can be obtained for mean value calculation, thereby avoiding errors caused by individual sensor sampling.

[0071] In some embodiments, the speed controller 1030 is further configured to be communicatively connected to the chainring moving mechanism, and the chainring moving mechanism is configured to drive the chainring 700 to move axially along the middle shaft 200.

[0072] In this embodiment, further considering the scenario that the chainring moving mechanism can drive the chainring 700 to move axially along the middle shaft 200, the chainring 700 can be controlled to move axially along the middle shaft 200 before or after or at the same time as the speed controller 1030 controls the freewheel speed change device to complete gear shifting, so that the angle between the chain and the chainring 700 can be reduced as much as possible after the freewheel 900 shifts gears, thereby maximizing the riding experience of the rider.

[0073] Referring to Figures 2 to 4 An embodiment of the bicycle speed change system provided by the present application includes:

[0074] The intelligent speed control system as described above;

[0075] The freewheel speed change device is connected to the speed controller 1030 and is configured to adjust the gear position of the freewheel 900.

[0076] The bicycle speed change system in this embodiment includes the intelligent speed control system as described above, and thus has the beneficial effects of the intelligent speed control system as described above, which will not be described again.

[0077] In some embodiments, the bicycle derailleur system further comprises:

[0078] The tooth disc moving mechanism is in communication with the derailleur controller 1030, and is configured to drive the tooth disc 700 to move axially along the middle shaft 200.

[0079] In this embodiment, further considering the scenario that the tooth disc moving mechanism can drive the tooth disc 700 to move axially along the middle shaft 200, the derailleur controller 1030 is configured to control the tooth disc 700 to move axially along the middle shaft 200 before or after or at the same time when the freewheel derailleur completes the gear shifting, so that the angle between the chain and the tooth disc 700 can be reduced as much as possible after the freewheel 900 shifts gears, thereby improving the riding experience of the rider to the greatest extent.

[0080] It can be understood that the tooth disc 700 being axially movable along the middle shaft 200 indicates that a space for the tooth disc 700 to move is reserved on the middle shaft 200.

[0081] The tooth disc moving mechanism can be implemented in various ways to drive the tooth disc 700 to move axially along the middle shaft 200.

[0082] In some embodiments, the tooth disc moving mechanism can include a shaft sleeve 300, an electrically controlled driving unit, the electrically controlled driving unit including a telescopic mechanism and a driving device paired with the telescopic mechanism, the shaft sleeve 300 being sleeved on the middle shaft 200 and being axially movable along the middle shaft 200, the shaft sleeve 300 being relatively fixed with the middle shaft 200 in the circumferential direction of the middle shaft 200; the tooth disc 700 being arranged on the shaft sleeve 300; the telescopic mechanism being located outside the middle shaft 200 and being connected to the shaft sleeve 300 and / or the tooth disc 700; the driving device being arranged on the frame 600 and being configured to drive the telescopic mechanism to operate, so that the telescopic mechanism drives the shaft sleeve 300 to move axially along the middle shaft 200, and the shaft sleeve 300 is rotatable relative to the telescopic mechanism. Then, the derailleur controller 1030 can send an instruction to the driving device to drive the tooth disc 700 to move, so as to control the movement of the tooth disc 700. There are many other ways to drive the tooth disc 700 to move axially along the middle shaft 200, which will not be described here, and some of the implementation manners will be further described later.

[0083] The telescopic mechanism can be a hydraulic cylinder, a pneumatic cylinder, an electric push rod, etc., and the driving device is an electric driving device matched with the hydraulic cylinder, the pneumatic cylinder, the electric push rod, etc., such as a hydraulic driving system, a pneumatic driving system, an electric driving system, etc.

[0084] In some embodiments, referring to Figures 2 to 4 , the tooth disc moving mechanism includes:

[0085] The shaft sleeve 300 is movably sleeved on the middle shaft 200 and located on one side of the middle shaft 200 close to the sprocket 700; the sprocket 700 is arranged on the shaft sleeve 300.

[0086] The electric control driving unit is in communication connection with the speed control device 1030 and is used for driving the shaft sleeve 300 to move along the middle shaft 200 in the axial direction.

[0087] In the embodiment, the movable shaft sleeve 300 is arranged on the middle shaft 200, the sprocket 700 is arranged on the shaft sleeve 300, and the shaft sleeve 300 is driven to move along the middle shaft 200 by the electric control driving unit, so that the sprocket 700 can move along the middle shaft 200. Finally, when the gear position of the bicycle freewheel 900 changes, the sprocket 700 can be driven by the electric control driving unit to adaptively adjust the gear position of the bicycle, so that the included angle between the chain and the sprocket 700 is effectively reduced, thereby improving the riding efficiency of the bicycle rider. In addition, because the included angle is reduced, the meshing cutting range of the chain and the tooth is wider, the chain can be reduced, the wear of the asymmetric tooth part is reduced, the axial force of the tooth part is reduced, and the deformation of the tooth is reduced, thereby prolonging the service life.

[0088] The shaft sleeve 300 is sleeved on the middle shaft 200 and can move along the middle shaft 200, and after the sprocket 700 is fixed on the shaft sleeve 300, the sprocket 700 can move along the middle shaft 200, so as to adjust the relative position of the sprocket 700 and the middle shaft 200.

[0089] The middle shaft 200 is arranged on the frame 600 through the bearing system, so that the shaft sleeve 300 can rotate with the middle shaft 200 to realize rotation.

[0090] The middle shaft 200 can be provided with a crank connecting shaft 800 at both ends, which is used for connecting the crank. The bicycle rider drives the middle shaft 200 to rotate by rotating the crank, and then drives the shaft sleeve 300 to rotate.

[0091] The maximum moving range of the shaft sleeve 300 on the middle shaft 200 in the axial direction of the middle shaft 200 can be adaptively adjusted according to the length of the middle shaft 200. Specifically, referring to Figure 2 、 Figure 3 The maximum moving distance can be constrained by the length of the middle shaft 200 and the position of the frame 600, or a separate limiting mechanism can be arranged to limit the moving range of the shaft sleeve 300.

[0092] The length of the shaft sleeve 300 can be flexibly adjusted according to actual needs, for example, as Figure 3As shown, when the design length is longer, the shaft sleeve 300 can extend to between the bearing system and the middle shaft 200, and when the design length is shorter, the shaft sleeve 300 can not extend to between the bearing system and the middle shaft 200, and the whole is kept outside the bearing system. It should be noted that the shaft sleeve 300 has advantages of being long and short, and in the case of less demand for the movement of the tooth disc 700, the shaft sleeve 300 with a shorter length can be considered.

[0093] The length of the shaft sleeve 300 can be set to 1.2 to 3 times the movement stroke of the tooth disc 700 in some scenarios.

[0094] The above-mentioned electric control driving unit can drive the shaft sleeve 300 to move, so as to adjust the relative position of the tooth disc 700 and the middle shaft 200, thereby adjusting the relative position between the tooth disc 700 and the flywheel 900, and adjusting the included angle between the chain and the tooth disc 700.

[0095] The above-mentioned electric control driving unit can be arranged in the middle shaft 200 or outside the middle shaft 200, and the specific arrangement position can be flexibly adjusted according to actual needs, and the electric control driving unit can drive the shaft sleeve 300 to move.

[0096] The above-mentioned electric control driving unit is connected with the speed controller 1030, and then adjusts the position of the tooth disc according to the control signal sent by the speed controller 1030.

[0097] The above-mentioned electric control driving unit is a mechanism for active adjustment, and therefore, the movement of the shaft sleeve 300 can be limited, that is, the shaft sleeve 300 will not be passively moved due to the traction of the chain, thereby improving the stability of riding.

[0098] In some embodiments, the middle shaft 200 is provided with a mounting cavity in the axial direction, and a first key groove is formed in the outer peripheral wall of the middle shaft 200 and communicates with the mounting cavity;

[0099] The electric control driving unit includes:

[0100] The electric driving mechanism 410 is electrically connected with the speed controller 1030 and is located in the mounting cavity away from the tooth disc 700;

[0101] The driving lead screw 420 is located in the mounting cavity close to the tooth disc 700, and one end of the driving lead screw 420 is connected with the electric driving mechanism 410;

[0102] The moving part 430 is threadedly connected with the driving lead screw 420, and the moving part 430 is connected with the shaft sleeve 300 and / or the tooth disc 700 through the first key groove; the electric driving mechanism 410 is used to drive the driving lead screw 420 to rotate to drive the moving part 430 to move along the axial direction of the middle shaft 200, so as to drive the shaft sleeve 300 to move along the middle shaft 200.

[0103] The middle shaft 200 is provided with a mounting cavity in the axial direction, and the mounting cavity can be used to accommodate an electric control driving unit.

[0104] The middle shaft 200 is provided with a crank connecting shaft 800 at both ends, and a through hole is formed in the crank connecting shaft 800 away from the shaft sleeve 300 and in the axial direction of the middle shaft 200, so as to communicate with the mounting cavity, and a wiring seat electrically connected with the electric control driving unit can be arranged in the through hole, so as to facilitate subsequent charging and / or data transmission operation of the electric control driving unit.

[0105] The mounting cavity can be divided into two chambers, a first chamber is arranged away from the shaft sleeve 300, and a second chamber is arranged close to the shaft sleeve 300, the electric driving mechanism 410 can be arranged in the first chamber, and the drive screw 420 and the moving part 430 can be arranged in the second chamber, so as to separate the electrical part structure, and reduce the possibility of damage to the electrical part structure caused by the external environment during use.

[0106] A first key groove is formed in the outer peripheral wall of the middle shaft 200 close to the shaft sleeve 300, the first key groove is connected with the mounting cavity, the first key groove can be in the shape of a long strip, and the length direction is consistent with the axial direction of the middle shaft 200, so as to connect the moving part 430 with the shaft sleeve 300, and also allow the moving part 430 to slide along the first key groove. At the same time, the arrangement of the first key groove can effectively prevent the shaft sleeve 300 from rotating relative to the middle shaft 200.

[0107] The first key groove can be formed in the outer peripheral wall of the middle shaft 200 close to the shaft sleeve 300, and multiple first key grooves can be arranged to increase the stability between the moving part 430 and the shaft sleeve 300. Figure 3 As shown in the figure, two first key grooves are formed in the middle shaft 200, and the upper and lower parts of the inner wall of the shaft sleeve 300 are connected with the moving part 430 through the first key grooves.

[0108] The electric driving mechanism 410 is arranged on one side of the mounting cavity, and the moving part 430 is located on the other side of the mounting cavity, the electric driving mechanism 410 and the moving part 430 are connected through the drive screw 420, so that the electric driving mechanism 410 can drive the moving part 430 to move in the axial direction of the middle shaft 200 through the drive screw 420, and then drive the shaft sleeve 300 and / or the toothed disc 700 through the moving part 430.

[0109] The moving part 430 can be a nut, or other base with a threaded hole structure.

[0110] In this embodiment, the electric driving mechanism 410 can drive the screw rod 420 to rotate and then drive the moving part 430 to move along the middle shaft 200 in the axial direction, so as to adjust the position of the shaft sleeve 300 and achieve the purpose of adjusting the relative position of the toothed disc 700 and the flywheel 900. In addition, the electric driving mechanism 410 can be used to achieve precise control of the moving position of the shaft sleeve 300, and the electric driving mechanism 410 can also be used to limit the movement of the shaft sleeve 300, so that the shaft sleeve 300 cannot move passively under the traction of the chain, thereby improving the stability of riding.

[0111] In some embodiments, the driving screw rod 420 described above can be replaced by a hydraulic cylinder, and the electric driving mechanism 410 can be replaced by a controlled hydraulic driving system, which can also drive the moving part 430. In the case of a large volume of the hydraulic driving system, the hydraulic driving system can be arranged outside the middle shaft 200, and the hydraulic driving system is connected to the hydraulic cylinder arranged in the mounting cavity through an oil pipe, so as to control the extension and contraction of the piston rod of the hydraulic cylinder. It should be noted that the hydraulic cylinder and the hydraulic driving system are connected through a hydraulic rotary joint, so that the external hydraulic driving system does not affect the rotation ability of the middle shaft 200.

[0112] In some embodiments, referring to Figure 2 As shown in FIG. 4, the electric driving mechanism 410 comprises:

[0113] The driving motor 411 is arranged in the mounting cavity;

[0114] The speed reducer 412 is arranged in the mounting cavity and located between the driving motor 411 and the toothed disc 700, and the speed reducer 412 is used to drive the driving screw rod 420 to rotate;

[0115] The electric control module 413 is arranged in the mounting cavity and electrically connected with the driving motor 411;

[0116] The wireless communication module 414 is arranged in the mounting cavity and electrically connected with the electric control module 413;

[0117] The power storage module 415 is arranged in the mounting cavity and used to supply power to the electric control module 413, the wireless communication module 414 and the driving motor 411.

[0118] The driving motor 411, the speed reducer 412 and the driving screw rod 420 are arranged in the mounting cavity in sequence.

[0119] The driving motor 411 can be connected to the external speed controller 1030 through the through hole provided on the crank connecting shaft 800, and the control of the driving motor 411 can be directly completed by the external speed controller 1030. The driving motor 411 can also be connected to the speed controller 1030 through the electronic control module 413 provided in the mounting cavity, and the control of the driving motor 411 can be indirectly completed by the speed controller 1030 through the electronic control module 413. The driving motor 411 can also be wirelessly connected to the speed controller 1030 through the wireless communication module 414 provided in the mounting cavity, and the control of the driving motor 411 can be indirectly completed by the speed controller 1030 through the wireless communication module 414. The specific control method needs to be adjusted according to the actual application requirements. That is, in the embodiment, the electronic control module 413 and the wireless communication module 414 are optional modules.

[0120] The reducer 412 can provide a larger torque to improve the driving capacity of the driving screw rod 420.

[0121] The wireless communication module 414 can realize wireless communication with the outside world.

[0122] The wireless communication module 414 can use Bluetooth, WIFI, etc. The specific selection can be made according to actual needs.

[0123] The power storage module 415 can directly use a lithium battery. The use of the power storage module 415 can make the electronic control module 413, the wireless communication module 414, and the driving motor 411 no longer need to rely on external power supply, so as to reduce or even cancel the fixed wiring, improve the applicability of the bicycle speed system, and reduce the installation difficulty of the bicycle speed system.

[0124] In some embodiments, with reference to Figures 2 to 4 The reducer 412, the driving motor 411, the electronic control module 413, the wireless communication module 414, and the power storage module 415 can be provided as a motor assembly. By providing an assembly structure, the installation and later maintenance can be quickly performed.

[0125] In some embodiments, the bearing system comprises:

[0126] The first bearing 110 is used to rotate the middle shaft 200 and is located on the side of the middle shaft 200 away from the tooth disc 700. The first bearing 110 is also used to limit the axial movement of the middle shaft 200.

[0127] In this embodiment, the rotation of the middle shaft 200 can be achieved by the first bearing 110, and the rotation requirement of the middle shaft 200 is met. Meanwhile, in this embodiment, the first bearing 110 is provided with a limiting function, so that when the driving shaft sleeve 300 moves, the middle shaft 200 will not move.

[0128] The first bearing 110 described above is used to limit the axial movement of the middle shaft 200. As shown in FIG. 1, a limiting protruding block is arranged on the outer circumferential wall of the middle shaft 200 to cooperate with the first bearing 110. The limiting protruding block is arranged at the position of the first bearing 110 close to the shaft sleeve 300 to provide a one-way limit, and an axial locking structure 130 is arranged at the position of the first bearing 110 away from the shaft sleeve 300 to achieve the limitation of the first bearing 110 in the other direction. Thus, the limitation of the back-and-forth movement of the middle shaft 200 in the axial direction is completed. A first locking plug 140 is arranged on the vehicle frame 600 or the assembly seat 500 at the position of the first bearing 110 away from the shaft sleeve 300, so as to fix the first bearing 110. Figure 3

[0129] The axial locking structure 130 described above can be directly used as an axial locking nut.

[0130] After the axial locking structure 130 is installed, if there is a gap between the vehicle frame 600, a first sealing ring 150 can be added for sealing.

[0131] In some embodiments, the first bearing 110 can be a ball bearing.

[0132] In this embodiment, the ball bearing has strong axial bearing capacity, which can better bear the axial force of the movement of the tooth disc 700, and the middle shaft 200 can be better fixed by the ball bearing.

[0133] In some embodiments, the bearing system further comprises:

[0134] The second bearing 120 is arranged close to the tooth disc 700 and is used to rotate the shaft sleeve 300.

[0135] In this embodiment, the shaft sleeve 300 is designed to extend between the middle shaft 200 and the vehicle frame 600. In order to reduce the friction between the shaft sleeve 300 and the vehicle frame 600, the second bearing 120 is arranged to make the shaft sleeve 300 rotate more smoothly.

[0136] In some embodiments, the second bearing 120 is a needle bearing.

[0137] In this embodiment, the second bearing 120 is a needle bearing, which can better improve the rotation and movement effect of the shaft sleeve 300.

[0138] ​In some embodiments, the second bearing 120 can also be a ball bearing or formed by a combination of multiple ball bearings.

[0139] In some embodiments, a second locking plug 160 can be arranged on the frame 600 or the assembly seat 500 to fix the needle bearing at a position where the second bearing 120 is close to the sprocket 700. After the second bearing 120 is installed, if there is a gap between the second bearing 120 and the frame 600, a second sealing ring 170 can be added to seal the gap.

[0140] In some embodiments, a second key groove is arranged on the outer circumferential wall of the axle shaft 200 along the axial direction of the axle shaft 200, and a sliding key is arranged on the inner circumferential wall of the shaft sleeve 300, and the sliding key can slide along the second key groove.

[0141] The second key groove can limit the sliding direction of the sliding key, so that the movement of the shaft sleeve 300 is smoother, and the shaft sleeve 300 can also be provided with a certain limit ability to rotate along the circumferential direction of the axle shaft 200.

[0142] In some embodiments, the second key groove and the first key groove can be the same key groove, and the key groove can meet the use requirements by being arranged with a suitable length.

[0143] In some embodiments, the intelligent variable speed control system further comprises:

[0144] The assembly seat 500 is arranged in the frame 600 in a detachable manner, and the bearing system is arranged in the assembly seat 500.

[0145] In the embodiment, the bearing system is arranged in the assembly seat 500, so that the entire intelligent variable speed control system can be arranged as an assembly structure, and the assembly seat 500 can be used to quickly install and replace the entire intelligent variable speed control system, thereby improving the use experience of the rider.

[0146] The application also provides a bicycle comprising the intelligent variable speed control system as described above. The bicycle has the intelligent variable speed control system, and thus has all the beneficial effects of the intelligent variable speed control system.

[0147] The above is only a specific embodiment of the application, and those skilled in the art can clearly understand it. It should be understood that the protection scope of the application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the application, and these modifications or replacements should be covered in the protection scope of the application.

Claims

1. An intelligent speed control system, characterized in that, include: Multiple status detection units, each of which is used to collect at least one of bicycle operating parameters and / or at least one of human functional parameters; The speed controller is electrically connected to multiple status detection units; the speed controller is also used to electrically connect to the bicycle's flywheel gear shifting device.

2. The intelligent transmission control system according to claim 1, characterized in that, The plurality of said state detection units include at least: A lactic acid detection device, communicatively connected to the speed controller, is used to detect lactic acid in the human body; and / or, A heart rate detection device, communicatively connected to the transmission controller, is used to detect the human heart rate; and / or, A blood pressure detection device is communicatively connected to the speed controller and is used to detect human blood pressure.

3. The intelligent transmission control system according to claim 1 or 2, characterized in that, The plurality of state detection units include: The torque detection unit, communicatively connected to the speed controller, is used to detect the output torque of human pedaling; and / or, The cadence detection unit is communicatively connected to the gear controller and is used to detect the cadence of the human body when pedaling the crank.

4. The intelligent transmission control system according to claim 3, characterized in that, The torque detection unit is mounted on the crank and / or chainring and / or bottom bracket; and / or, The cadence detection unit is mounted on the crank and / or chainring and / or bottom bracket.

5. The intelligent transmission control system according to claim 1, characterized in that, The intelligent transmission control system also includes: The human-machine interface unit is communicatively connected to the speed controller.

6. The intelligent transmission control system according to claim 1, characterized in that, The speed controller is also used for communication connection with the crankcase moving mechanism; the crankcase moving mechanism is used to drive the crankcase to move axially along the central axis.

7. A bicycle gear shifting system, characterized in that, include: The intelligent transmission control system as described in any one of claims 1 to 6; The flywheel gear shifting device is electrically connected to the gear controller and is used to adjust the gear position of the flywheel.

8. The bicycle gear shifting system according to claim 7, characterized in that, The bicycle transmission system also includes: The crankcase moving mechanism is communicatively connected to the speed controller and is used to drive the crankcase to move axially along the central axis.

9. The bicycle transmission system according to claim 8, characterized in that, The toothed disc moving mechanism includes: A bushing is movably sleeved on the central shaft and located on the side of the central shaft near the toothed disc; the toothed disc is disposed on the bushing. An electronically controlled drive unit, which is communicatively connected to the speed controller, is used to drive the bushing to move axially along the central shaft.

10. A bicycle, characterized in that, Including the intelligent transmission control system as described in any one of claims 1 to 6.

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