WO2022121117A1 - Bicycle torque transmission mechanism and system, and electric power-assisted bicycle - Google Patents
Bicycle torque transmission mechanism and system, and electric power-assisted bicycle Download PDFInfo
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- WO2022121117A1 WO2022121117A1 PCT/CN2021/077435 CN2021077435W WO2022121117A1 WO 2022121117 A1 WO2022121117 A1 WO 2022121117A1 CN 2021077435 W CN2021077435 W CN 2021077435W WO 2022121117 A1 WO2022121117 A1 WO 2022121117A1
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- 239000000463 material Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
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- 230000035945 sensitivity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
Definitions
- the present application relates to the technical field of torque transmission, and in particular, to a bicycle torque transmission mechanism, a system and an electric power-assisted bicycle.
- a unilateral torque sensor is used, but the unilateral torque sensor can only sense the strength of a single pedal, and cannot truly understand the rider's strength requirements, and cannot be well adapted to various applications of bicycles.
- Both ends of the central shaft are respectively connected with the first pedal crank and the second pedal crank;
- the detection circuit includes at least one pair of magnetic sensors
- the detection circuit is arranged outside the torque sleeve, and the detection circuit is used for monitoring the state of the torque sleeve, and generates a monitoring signal when the deformation of the torque sleeve is monitored.
- the present application provides a bicycle torque sensing mechanism including a central shaft, a torque sleeve and a detection circuit capable of sensing the deformation of the torque sleeve.
- the torque transmission mechanism adopts a bilateral torque sensing structure to more accurately measure the strength of the double pedals. It can better understand the power needs of the rider and can be applied to various bicycle applications regardless of road conditions.
- Both ends of the central axle 1 are respectively connected with the first pedal crank and the second pedal crank; in the embodiment of the present application, the central axle 1 is installed in the bottom bracket of the bicycle;
- the central axle 1 can transmit the torque to the torque sleeve 2 when receiving the torque transmitted by the first pedal crank and/or the second pedal crank; the torque sleeve 2 can be deformed when receiving the torque;
- the present application provides a bicycle torque sensing mechanism including a central axle 1, a torque sleeve 2, and a detection circuit 3 capable of sensing the deformation of the torque sleeve 2.
- the torque sensing mechanism adopts a bilateral torque sensing structure to more accurately measure both feet
- the strength of the pedals can better understand the rider's strength needs, and can be applied to various bicycle applications without being affected by road conditions.
- the bicycle torque sensing mechanism provided by the embodiments of the present application can be used for electric-assisted bicycles to detect the pedaling torque of the rider, and can also be used for ordinary bicycles to monitor torque or input power, and be used as a power meter.
- a second aspect of the present application provides an electric-assisted bicycle torque transmission system, the torque transmission system includes a controller, a speed sensor and a bicycle torque transmission mechanism;
- the detection circuit 3 is connected with the controller, and the speed sensor is connected with the controller;
- the speed sensor is used to obtain the speed information of the bicycle and send the speed information to the controller;
- the detection circuit 3 is used to send the generated monitoring signal to the controller;
- the controller is used to determine the motor assist data according to the speed information and the monitoring signal;
- the motor assist The data includes parameters related to the magnitude of motor assist, such as motor power, assist level, etc.
- the controller used to determine the motor assist data according to the speed information and the monitoring signal specifically includes: if the controller receives the monitoring signal and the speed information is greater than the set value, that is, when the rotation speed is detected, the controller determines to perform The motor assists and determines the assist data. If the controller receives the monitoring signal but the speed information is less than or equal to the set value, the set value can be used to judge that the vehicle is in a stopped state. An interval in which the vehicle is at a standstill. Then, the magnitude of the assist in the determined assist data is zero, that is, the controller controls the motor not to assist. It can effectively avoid the danger of the vehicle suddenly jumping out due to the occurrence of an erroneous signal in the stop state detection circuit 3 .
- the electric-assisted bicycle torque transmission system further includes a motor, the motor is connected to the controller, and the controller is further configured to control the motor based on the motor assist data.
- a third aspect of the present application provides an electric power-assisted bicycle, including the above-mentioned bicycle torque transmission system.
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Abstract
A bicycle torque transmission mechanism, comprising an intermediate shaft (1), a torque shaft sleeve (2), a first pedal crank, a second pedal crank, and a detection circuit (3). Two ends of the intermediate shaft (1) are respectively connected to the first pedal crank and the second pedal crank. The torque shaft sleeve (2) is arranged outside the intermediate shaft (1). Upon receiving torque transferred by the first pedal crank and/or the second pedal crank, the intermediate shaft (1) can transfer the torque to the torque shaft sleeve (2). The torque shaft sleeve (2) can deform upon receiving the torque. The detection circuit (3) comprises at least one group of magnetic sensors arranged in pairs. The detection circuit (3) is disposed outside the torque shaft sleeve (2). The detection circuit (3) is used to monitor the state of the torque shaft sleeve (2), and to generate a monitoring signal when monitoring that the torque shaft sleeve (2) deforms. The torque transmission mechanism uses a bilateral torque sensing structure, such that the force applied to two pedals can be accurately measured and the force requirements of a rider can be better understood, and the mechanism can be applied in various application scenarios of bicycles.
Description
本申请涉及力矩传动技术领域，特别涉及一种自行车力矩传动机构、***及电助力自行车。The present application relates to the technical field of torque transmission, and in particular, to a bicycle torque transmission mechanism, a system and an electric power-assisted bicycle.
近年来，电动自行车作为一种环保、节能的交通工具已经逐渐被广大消费者所接受，无论在国内还是国外，电动自行车在世界范围内的销量也在逐年增加，电动自行车替代自行车的趋势逐步扩大，而传感器的质量及灵敏度也决定了电动自行车的骑行体验。In recent years, electric bicycles have been gradually accepted by consumers as an environmentally friendly and energy-saving means of transportation. Whether at home or abroad, the sales of electric bicycles around the world are also increasing year by year, and the trend of electric bicycles replacing bicycles is gradually expanding. , and the quality and sensitivity of the sensor also determine the riding experience of the electric bicycle.
目前用于电动自行车中的传感器多为霍尔转速传感器，然而，这类电动自行车传感器不能检测静态和动态扭矩，测量精度差，在骑行中不能零启动，在平路和下坡骑行中会出现电动助力过大而使电池产生不必要的放电。由于磁钢并未安装在中轴有效的受力部位，其因扭力而产生的位移变化并不明显，往往在低转速时明显，而高转速时则不明显，故使得感应电位信号的输出不准确，传感器的工作稳定性和可靠性均大大下降。At present, most of the sensors used in electric bicycles are Hall speed sensors. However, such electric bicycle sensors cannot detect static and dynamic torque, and the measurement accuracy is poor. There will be excessive electric assist and unnecessary discharge of the battery. Because the magnetic steel is not installed in the effective force-bearing part of the central shaft, the displacement change caused by the torsion force is not obvious, which is often obvious at low speed, but not obvious at high speed, so the output of the induced potential signal is not obvious. Accurate, the working stability and reliability of the sensor are greatly reduced.
还有些方案中采用单边力矩传感器，但是单边力矩传感器只能感知单只脚踏的力量大小，无法真实理解骑行者力量需求，不能很好的适应自行车各种应用场合。In some solutions, a unilateral torque sensor is used, but the unilateral torque sensor can only sense the strength of a single pedal, and cannot truly understand the rider's strength requirements, and cannot be well adapted to various applications of bicycles.
发明内容SUMMARY OF THE INVENTION
本申请要解决是现有技术中自行车的扭矩传感机构数据采集不够精准且传感性能稳定性和可靠性较差的技术问题。The present application aims to solve the technical problems in the prior art that the data collection of the torque sensing mechanism of the bicycle is not accurate enough, and the stability and reliability of the sensing performance are poor.
为解决上述技术问题，本申请实施例公开了一种自行车力矩传动机构，包括中轴、力矩轴套、第一脚踏曲柄、第二脚踏曲柄和检测电路；In order to solve the above technical problem, the embodiment of the present application discloses a bicycle torque transmission mechanism, which includes a center shaft, a torque sleeve, a first pedal crank, a second pedal crank and a detection circuit;
所述中轴的两端分别与所述第一脚踏曲柄和所述第二脚踏曲柄连接；Both ends of the central shaft are respectively connected with the first pedal crank and the second pedal crank;
所述力矩轴套套设于所述中轴外部；the moment sleeve is sleeved on the outside of the central shaft;
所述中轴能够在接收到所述第一脚踏曲柄和/或所述第二脚踏曲柄传递的扭矩时将所述扭矩传递给所述力矩轴套；所述力矩轴套能够在接收到所述扭矩时产生形变；The center shaft can transmit the torque to the torque sleeve when receiving the torque transmitted by the first pedal crank and/or the second pedal crank; the torque sleeve can receive the torque. Deformation occurs at the torque;
所述检测电路包括至少一组成对设置的磁敏传感器；The detection circuit includes at least one pair of magnetic sensors;
所述检测电路设于所述力矩轴套外侧，所述检测电路用于监测所述力矩轴套的状态，并在监测到所述力矩轴套产生形变时生成监测信号。The detection circuit is arranged outside the torque sleeve, and the detection circuit is used for monitoring the state of the torque sleeve, and generates a monitoring signal when the deformation of the torque sleeve is monitored.
进一步地，所述力矩轴套的材质为刚性可磁化钢材。Further, the material of the moment bushing is rigid magnetizable steel.
进一步地，还包括固定支架、第一轴碗和第二轴碗；Further, it also includes a fixing bracket, a first axle bowl and a second axle bowl;
所述第一轴碗和所述第二轴碗分被设于所述中轴的两端；The first axle bowl and the second axle bowl are respectively arranged at both ends of the central shaft;
所述固定支架环绕所述力矩轴套设置，且所述固定支架的两端分别与所述第一轴碗和所述第二轴碗连接。The fixing bracket is arranged around the moment bushing, and two ends of the fixing bracket are respectively connected with the first bushing and the second bushing.
进一步地，所述检测电路设于所述固定支架上；所述力矩轴套能够相对于所述固定支架转动。Further, the detection circuit is arranged on the fixed bracket; the torque bushing can be rotated relative to the fixed bracket.
进一步地，所述固定支架的材质为非磁性材质。Further, the material of the fixing bracket is a non-magnetic material.
进一步地，还包括传动件和牙盘结构；Further, it also includes a transmission member and a crankset structure;
所述传动件的一端与所述力矩轴套的一端套设连接，所述传动件另一端与所述牙盘结构连接。One end of the transmission member is sleeved and connected to one end of the torque sleeve, and the other end of the transmission member is connected to the crankset structure.
进一步地，所述传动件为花键套；所述花键套与所述力矩轴套的一端通过花键配合连接。Further, the transmission member is a spline sleeve; the spline sleeve is connected with one end of the torque sleeve through a spline.
本申请第二方面提供一种电助力自行车力矩传动***，包括控制器、速度传感器和所述自行车力矩传动机构；A second aspect of the present application provides an electric-assisted bicycle torque transmission system, including a controller, a speed sensor and the bicycle torque transmission mechanism;
所述检测电路与所述控制器连接，所述速度传感器与所述控制器连接；The detection circuit is connected with the controller, and the speed sensor is connected with the controller;
所述速度传感器用于获取自行车的速度信息，并将所述速度信息发送给所述控制器；所述检测电路用于将生成的监测信号发送至所述控制器；所述控制器用于根据所述速度信息和所述监测信号确定电机助力数据。The speed sensor is used to acquire the speed information of the bicycle and send the speed information to the controller; the detection circuit is used to send the generated monitoring signal to the controller; the controller is used to send the generated monitoring signal to the controller; The speed information and the monitoring signal determine motor assist data.
进一步地，还包括电机，所述电机与所述控制器相连，所述控制器还用于基于所述电机助力数据控制所述电机。Further, a motor is also included, the motor is connected to the controller, and the controller is further configured to control the motor based on the motor assist data.
本申请第三方面提供一种电助力自行车，包括所述自行车力矩传动***。A third aspect of the present application provides an electric power-assisted bicycle, including the bicycle torque transmission system.
采用上述技术方案，本申请具有如下有益效果：Adopting the above-mentioned technical scheme, the application has the following beneficial effects:
本申请提供自行车扭矩传感机构包括中轴、力矩轴套以及能感应力矩轴套形变的检测电路，该力矩传动机构采用双边扭矩传感结构能够更为精准地测量双只脚踏的力量大小，能够更好地理解骑行者力量需求，且能够应用于自行车各种应用场合，不受路况影响。The present application provides a bicycle torque sensing mechanism including a central shaft, a torque sleeve and a detection circuit capable of sensing the deformation of the torque sleeve. The torque transmission mechanism adopts a bilateral torque sensing structure to more accurately measure the strength of the double pedals. It can better understand the power needs of the rider and can be applied to various bicycle applications regardless of road conditions.
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.
图1为本申请实施例一种自行车力矩传动机构的示意图；1 is a schematic diagram of a bicycle torque transmission mechanism according to an embodiment of the application;
图2为本申请实施例一种自行车力矩传动机构的检测电路的位置示意图；2 is a schematic position diagram of a detection circuit of a bicycle torque transmission mechanism according to an embodiment of the application;
图3为本申请实施例一种自行车力矩传动机构的拆分示意图；Fig. 3 is the disassembled schematic diagram of a kind of bicycle torque transmission mechanism according to the embodiment of the application;
图4为本申请实施例一种自行车力矩传动机构的示意图；4 is a schematic diagram of a bicycle torque transmission mechanism according to an embodiment of the application;
图5为本申请实施例一种自行车力矩传动机构的示意图。FIG. 5 is a schematic diagram of a bicycle torque transmission mechanism according to an embodiment of the present application.
以下对附图作补充说明：The following supplementary descriptions are provided for the accompanying drawings:
1-中轴；2-力矩轴套；3-检测电路；4-固定支架；5-传动件；6-第一轴碗；7-第二轴碗。1-center shaft; 2-torque bushing; 3-detection circuit; 4-fixed bracket; 5-transmission part; 6-first shaft bowl; 7-second shaft bowl.
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.
此处所称的“一个实施例”或“实施例”是指可包含于本申请至少一个实现方式中的特定特征、结构或特性。在本申请实施例的描述中，需要理解的是，术语“上”、“下”、“顶”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含的包括一个或者更多个该特征。而且，术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, only It is for the convenience of describing the present application and to simplify the description, rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. Also, the terms "first," "second," etc. are used to distinguish between similar objects, and are not necessarily used to describe a particular order or precedence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.
请参见图1-5，图1为本申请实施例一种自行车力矩传动机构的示意图，该自行车力矩传动机构包括中轴1、力矩轴套2、第一脚踏曲柄、第二脚踏曲柄和检测电路3；Please refer to FIGS. 1-5. FIG. 1 is a schematic diagram of a bicycle torque transmission mechanism according to an embodiment of the application. The bicycle torque transmission mechanism includes a center shaft 1, a torque sleeve 2, a first pedal crank, a second pedal crank and detection circuit 3;
中轴1的两端分别与第一脚踏曲柄和第二脚踏曲柄连接；本申请实施例中，中轴1安装于自行车的五通管内；Both ends of the central axle 1 are respectively connected with the first pedal crank and the second pedal crank; in the embodiment of the present application, the central axle 1 is installed in the bottom bracket of the bicycle;
力矩轴套2套设于中轴1外部；力矩轴套2可以与中轴1同心设置且与中轴1通过花键配合连接。The moment shaft sleeve 2 is sleeved outside the central shaft 1; the moment shaft sleeve 2 can be arranged concentrically with the central shaft 1 and is connected with the central shaft 1 through splines.
中轴1能够在接收到第一脚踏曲柄和/或第二脚踏曲柄传递的扭矩时将扭矩传递给力矩轴套2；力矩轴套2能够在接收到扭矩时产生形变；The central axle 1 can transmit the torque to the torque sleeve 2 when receiving the torque transmitted by the first pedal crank and/or the second pedal crank; the torque sleeve 2 can be deformed when receiving the torque;
检测电路3设于力矩轴套2外侧，检测电路3用于监测力矩轴套2的状态，并在监测到力矩轴套2产生形变时生成监测信号。The detection circuit 3 is arranged on the outside of the torque sleeve 2 , and the detection circuit 3 is used to monitor the state of the torque sleeve 2 and generate a monitoring signal when the deformation of the torque sleeve 2 is monitored.
检测电路3包括至少一组成对设置的磁敏传感器。The detection circuit 3 includes at least one pair of magneto-sensitive sensors.
本申请实施例中，所述力矩轴套2的材质为刚性可磁化钢材；且通过热处理工艺进行处理，具有高的表面硬度；通过在力矩轴套2轴向短暂施加两个相反方向的强磁场能够获得周向表面的永久磁场。本申请实施例中，为了进一步提高检测电路3的灵敏度和准确度，中轴1和中轴1上的轴承等其他结构件均需要进行退磁处理。In the embodiment of the present application, the material of the torque sleeve 2 is rigid magnetizable steel; and it is processed through a heat treatment process, so it has high surface hardness; by temporarily applying two strong magnetic fields in opposite directions in the axial direction of the torque sleeve 2 A permanent magnetic field of the circumferential surface can be obtained. In the embodiment of the present application, in order to further improve the sensitivity and accuracy of the detection circuit 3 , the center shaft 1 and other structural components such as bearings on the center shaft 1 need to be demagnetized.
本申请实施例中，图3为本申请实施例自行车力矩传动机构的拆分示意图；图4和图5分别为本申请实施例自行车力矩传动机构不同角度的视图，该自行车力矩传动机构还包括固定支架4、第一轴碗6和第二轴碗7；所述第一轴碗6和所述第二轴碗7分被设于所述中轴1的两端；所述固定支架4环绕所述力矩轴套2设置，且所述固定支架4的两端分别与所述第一轴碗6和所述第二轴碗7连接；可实施的，该连接方式可以为卡接，也可以为其他连接方式。固定于固定支架4上的检测电路3可以位于力矩轴套的一侧的设定区域(如图2所示)。In the embodiment of the present application, FIG. 3 is a schematic view of the disassembly of the bicycle torque transmission mechanism according to the embodiment of the application; FIG. 4 and FIG. 5 are views from different angles of the bicycle torque transmission mechanism according to the embodiment of the application, and the bicycle torque transmission mechanism also includes a fixed The bracket 4 , the first axle bowl 6 and the second axle bowl 7 ; the first axle bowl 6 and the second axle bowl 7 are respectively arranged at both ends of the central shaft 1 ; the fixed bracket 4 surrounds the The torque bushing 2 is provided, and the two ends of the fixing bracket 4 are respectively connected with the first bushing 6 and the second bushing 7; which can be implemented, the connection method may be a snap connection, or a other connection methods. The detection circuit 3 fixed on the fixed bracket 4 may be located in a set area on one side of the torque bushing (as shown in FIG. 2 ).
所述检测电路3设于所述固定支架4上；固定支架不随中轴转动而转动，即固定于固定支架4上的检测电路2也不随中轴1转动而转动；所述中轴1和力矩轴套2能够相对于所述固定支架4转动。在中轴1旋转时，保证固定支架4为静止状态，能够周向检测力矩轴套2磁场变化的信号。The detection circuit 3 is arranged on the fixed bracket 4; the fixed bracket does not rotate with the rotation of the central axis, that is, the detection circuit 2 fixed on the fixed bracket 4 does not rotate with the rotation of the central axis 1; the central axis 1 and the torque The shaft sleeve 2 can rotate relative to the fixed bracket 4 . When the central shaft 1 rotates, it is ensured that the fixed bracket 4 is in a static state, and the signal of the magnetic field change of the torque sleeve 2 can be detected circumferentially.
本申请提供的自行车力矩传动机构能够基于磁致伸缩原理来测量由于扭矩而引起的磁场变化。检测电路相对于带磁编码的力矩轴套以非接触方式安装(与旋转轴线基本平行设置)，并且所述检测电路能够对载荷作用下的磁弹性效应而产生的磁场变化(反磁致伸缩)进行测量。磁场变化与外力影响成正比并与扭矩建立联系。The bicycle torque transmission mechanism provided by the present application can measure the change of the magnetic field caused by the torque based on the principle of magnetostriction. The detection circuit is installed in a non-contact manner with respect to the magnetically encoded torque bushing (arranged substantially parallel to the axis of rotation), and the detection circuit is capable of responding to changes in the magnetic field caused by the magneto-elastic effect under load (inverse magnetostriction) Take measurements. The magnetic field change is proportional to the influence of the external force and is related to the torque.
本申请实施例中，可实施的，检测电路3可以包括两个磁敏传感器在所述力矩套2的纵向成对配置，且两个磁敏感传感器可以均相对位于中轴1的轴向方向，该配置通过电路拓扑上的互补方式，在干扰磁场变化的情况下实时地进行补偿，能够有效抵消外部磁场干扰。所述外部干扰磁场包括地球磁场和/或由于由地球磁场引起的所述轴的磁化而产生的磁场；可实施的，所述力矩套2的纵向也可以配置多组成对设置的磁敏传感器；该设置能够对所述力矩套2旋转期间由于磁化部分的旋转不对称而引起的测量偏差进行补偿，能够有效提升磁场变化的检测精度。In the embodiment of the present application, it can be implemented that the detection circuit 3 may include two magnetic sensitive sensors arranged in pairs in the longitudinal direction of the torque sleeve 2 , and the two magnetic sensitive sensors may be located relatively in the axial direction of the central axis 1 , In this configuration, compensation is performed in real time under the condition of disturbance magnetic field changes through a complementary manner on the circuit topology, which can effectively cancel the external magnetic field disturbance. The external interfering magnetic field includes the earth's magnetic field and/or the magnetic field generated by the magnetization of the shaft caused by the earth's magnetic field; practicably, the longitudinal direction of the torque sleeve 2 can also be configured with multiple pairs of magnetic sensors; This setting can compensate for the measurement deviation caused by the rotational asymmetry of the magnetized part during the rotation of the torque sleeve 2 , and can effectively improve the detection accuracy of the magnetic field change.
本申请实施例中，检测电路3能够周向检测力矩轴套2磁场变化的信号；在传递扭矩时，中轴1能够在接收到第一脚踏曲柄和/或第二脚踏曲柄传递的扭矩时将扭矩传递给力矩轴套2；力矩轴套2能够在接收到扭矩时产生形变从而导致磁场变化,该检测电路3与控制器 连接，当检测电路3监测到力矩轴套2磁场发生变化时会将该监测信号反馈给控制器。In the embodiment of the present application, the detection circuit 3 can circumferentially detect the signal of the magnetic field change of the torque sleeve 2; when transmitting torque, the center shaft 1 can receive the torque transmitted by the first pedal crank and/or the second pedal crank The torque is transmitted to the torque sleeve 2 when the torque is received; the torque sleeve 2 can deform when receiving the torque, resulting in a change in the magnetic field. The detection circuit 3 is connected to the controller. When the detection circuit 3 monitors the change in the magnetic field of the torque sleeve 2 This monitoring signal is fed back to the controller.
本申请实施例中，固定支架4的材质为非磁性材质，例如，可以选择为塑料材质。采用非磁性材质的固定支架4固定检测电路，能够避免与力矩轴套2磁场干涉，能够有效提高检测电路灵敏度和准确度。In the embodiment of the present application, the material of the fixing bracket 4 is a non-magnetic material, for example, a plastic material can be selected. The non-magnetic material fixing bracket 4 is used to fix the detection circuit, which can avoid magnetic field interference with the torque sleeve 2 and can effectively improve the sensitivity and accuracy of the detection circuit.
本申请实施例中，该自行车力矩传动机构还包括传动件5和牙盘结构；In the embodiment of the present application, the bicycle torque transmission mechanism further includes a transmission member 5 and a crankset structure;
传动件5的一端与力矩轴套2的一端套设连接，传动件5另一端与牙盘结构连接。作用在中轴1左端或右端的扭矩，先从中轴1传递到力矩轴套2，再从力矩轴套2传递到花键套，最后从花键套传递到牙盘。One end of the transmission member 5 is sleeved and connected to one end of the torque shaft sleeve 2 , and the other end of the transmission member 5 is connected to the crankset structure. The torque acting on the left or right end of the center shaft 1 is first transmitted from the center shaft 1 to the torque sleeve 2, then from the torque sleeve 2 to the spline sleeve, and finally from the spline sleeve to the crankset.
本申请实施例中，传动件5为花键套；花键套与力矩轴套2的一端通过花键配合连接；花键套与中轴1为间隙装配。In the embodiment of the present application, the transmission member 5 is a spline sleeve; the spline sleeve and one end of the torque shaft sleeve 2 are connected through a spline fit; the spline sleeve and the central shaft 1 are assembled with clearance.
本申请实施例中，在自行车力矩传动机构工作时，中轴1、力矩轴套2、花键套、牙盘结构一同转动，固定检测电路3的固定支架4固定不动。In the embodiment of the present application, when the bicycle torque transmission mechanism is working, the center shaft 1, the torque sleeve 2, the spline sleeve and the crankset rotate together, and the fixing bracket 4 for fixing the detection circuit 3 is fixed.
本申请提供自行车扭矩传感机构包括中轴1、力矩轴套2以及能感应力矩轴套2形变的检测电路3，该扭矩传感机构采用双边扭矩传感结构能够更为精准地测量双只脚踏的力量大小，能够更好地理解骑行者力量需求，且能够应用于自行车各种应用场合，不受路况影响。The present application provides a bicycle torque sensing mechanism including a central axle 1, a torque sleeve 2, and a detection circuit 3 capable of sensing the deformation of the torque sleeve 2. The torque sensing mechanism adopts a bilateral torque sensing structure to more accurately measure both feet The strength of the pedals can better understand the rider's strength needs, and can be applied to various bicycle applications without being affected by road conditions.
本申请实施例提供的自行车扭矩传感机构可用于电助力自行车检测骑行人踩踏力矩，也可用于普通自行车监测扭矩或输入功率，用作功率计等。The bicycle torque sensing mechanism provided by the embodiments of the present application can be used for electric-assisted bicycles to detect the pedaling torque of the rider, and can also be used for ordinary bicycles to monitor torque or input power, and be used as a power meter.
本申请第二方面提供一种电助力自行车力矩传动***，该力矩传动***包括控制器、速度传感器和自行车力矩传动机构；A second aspect of the present application provides an electric-assisted bicycle torque transmission system, the torque transmission system includes a controller, a speed sensor and a bicycle torque transmission mechanism;
检测电路3与控制器连接，速度传感器与控制器连接；The detection circuit 3 is connected with the controller, and the speed sensor is connected with the controller;
速度传感器用于获取自行车的速度信息，并将速度信息发送给控制器；检测电路3用于将生成的监测信号发送至控制器；控制器用于根据速度信息和监测信号确定电机助力数据；电机助力数据包括与电机助力大小等相关的参数，例如电机功率、助力级别等。The speed sensor is used to obtain the speed information of the bicycle and send the speed information to the controller; the detection circuit 3 is used to send the generated monitoring signal to the controller; the controller is used to determine the motor assist data according to the speed information and the monitoring signal; the motor assist The data includes parameters related to the magnitude of motor assist, such as motor power, assist level, etc.
本申请实施例中，控制器用于根据速度信息和监测信号确定电机助力数据具体包括：若控制器接收到监测信号且速度信息为大于设定值，即检测到转动速度时，控制器才确定进行电机助力并确定助力数据。若控制器接收到监测信号但速度信息为小于或等于设定值，该设定值为能判断车辆在停止状态的值，可以为零，也可以根据需求设定一个略大于零的且能判断车辆处于停止状态的一个区间。则确定的助力数据中助力大小为零，即控制器控制电机不进行助力。能够有效避免车辆在停止状态检测电路3发生误信号而造成车辆突然窜出等危险。In the embodiment of the present application, the controller used to determine the motor assist data according to the speed information and the monitoring signal specifically includes: if the controller receives the monitoring signal and the speed information is greater than the set value, that is, when the rotation speed is detected, the controller determines to perform The motor assists and determines the assist data. If the controller receives the monitoring signal but the speed information is less than or equal to the set value, the set value can be used to judge that the vehicle is in a stopped state. An interval in which the vehicle is at a standstill. Then, the magnitude of the assist in the determined assist data is zero, that is, the controller controls the motor not to assist. It can effectively avoid the danger of the vehicle suddenly jumping out due to the occurrence of an erroneous signal in the stop state detection circuit 3 .
本申请实施例中，该电助力自行车力矩传动***还包括电机，电机与控制器相连，控制器还用于基于电机助力数据控制电机。In the embodiment of the present application, the electric-assisted bicycle torque transmission system further includes a motor, the motor is connected to the controller, and the controller is further configured to control the motor based on the motor assist data.
本申请第三方面提供一种电助力自行车，包括上述自行车力矩传动***。A third aspect of the present application provides an electric power-assisted bicycle, including the above-mentioned bicycle torque transmission system.
以上仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围内。The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. .
Claims (10)
- 一种自行车力矩传动机构，其特征在于，包括中轴(1)、力矩轴套(2)、第一脚踏曲柄、第二脚踏曲柄和检测电路(3)；A bicycle torque transmission mechanism, characterized in that it comprises a central shaft (1), a torque sleeve (2), a first pedal crank, a second pedal crank and a detection circuit (3);所述中轴(1)的两端分别与所述第一脚踏曲柄和所述第二脚踏曲柄连接；Both ends of the central shaft (1) are respectively connected with the first pedal crank and the second pedal crank;所述力矩轴套(2)套设于所述中轴(1)外部；The moment sleeve (2) is sleeved on the outside of the central shaft (1);所述中轴(1)能够在接收到所述第一脚踏曲柄和/或所述第二脚踏曲柄传递的扭矩时将所述扭矩传递给所述力矩轴套(2)；所述力矩轴套(2)能够在接收到所述扭矩时产生形变；The central axle (1) can transmit the torque to the torque bushing (2) when receiving the torque transmitted by the first pedal crank and/or the second pedal crank; the torque The bushing (2) is capable of deforming when receiving said torque;所述检测电路包括至少一组成对设置的磁敏传感器；The detection circuit includes at least one pair of magnetic sensors;所述检测电路(3)设于所述力矩轴套(2)外侧，所述检测电路(3)用于监测所述力矩轴套(2)的状态，并在监测到所述力矩轴套(2)产生形变时生成监测信号。The detection circuit (3) is arranged on the outside of the torque bushing (2), and the detection circuit (3) is used to monitor the state of the torque bushing (2). 2) Generate a monitoring signal when deformation occurs.
- 根据权利要求1所述的自行车力矩传动机构，其特征在于，所述力矩轴套(2)的材质为刚性可磁化钢材。The bicycle torque transmission mechanism according to claim 1, wherein the material of the torque sleeve (2) is rigid magnetizable steel.
- 根据权利要求2所述的自行车力矩传动机构，其特征在于，还包括固定支架(4)、第一轴碗(6)和第二轴碗(7)；The bicycle torque transmission mechanism according to claim 2, characterized in that, further comprising a fixing bracket (4), a first axle bowl (6) and a second axle bowl (7);所述第一轴碗(6)和所述第二轴碗(7)分被设于所述中轴(1)的两端；The first axle bowl (6) and the second axle bowl (7) are respectively arranged at both ends of the central shaft (1);所述固定支架(4)环绕所述力矩轴套(2)设置，且所述固定支架(4)的两端分别与所述第一轴碗(6)和所述第二轴碗(7)连接。The fixing bracket (4) is arranged around the moment bushing (2), and the two ends of the fixing bracket (4) are respectively connected with the first shaft bowl (6) and the second shaft bowl (7) connect.
- 根据权利要求3所述的自行车力矩传动机构，其特征在于，所述检测电路(3)设于所述固定支架(4)上；所述力矩轴套(2)能够相对于所述固定支架(4)转动。The bicycle torque transmission mechanism according to claim 3, characterized in that, the detection circuit (3) is provided on the fixed bracket (4); the torque bushing (2) can be relative to the fixed bracket ( 4) Turn.
- 根据权利要求4所述的自行车力矩传动机构，其特征在于，所述固定支架(4)的材质为非磁性材质。The bicycle torque transmission mechanism according to claim 4, wherein the material of the fixing bracket (4) is a non-magnetic material.
- 根据权利要求1所述的自行车力矩传动机构，其特征在于，还包括传动件(5)和牙盘结构；The bicycle torque transmission mechanism according to claim 1, further comprising a transmission member (5) and a crankset structure;所述传动件(5)的一端与所述力矩轴套(2)的一端套设连接，所述传动件(5)另一端与所述牙盘结构连接。One end of the transmission member (5) is sleeved and connected to one end of the torque shaft sleeve (2), and the other end of the transmission member (5) is connected to the crankset structure.
- 根据权利要求6所述的自行车力矩传动机构，其特征在于，所述传动件(5)为花键套；所述花键套与所述力矩轴套(2)的一端通过花键配合连接。The bicycle torque transmission mechanism according to claim 6, characterized in that, the transmission member (5) is a spline sleeve; the spline sleeve is connected to one end of the torque sleeve (2) through spline fitting.
- 一种电助力自行车力矩传动***，其特征在于，包括控制器、速度传感器和权利1-7任一项所述自行车力矩传动机构；An electric-assisted bicycle torque transmission system, characterized in that it comprises a controller, a speed sensor and the bicycle torque transmission mechanism described in any one of claims 1-7;所述检测电路(3)与所述控制器连接，所述速度传感器与所述控制器连接；The detection circuit (3) is connected with the controller, and the speed sensor is connected with the controller;所述速度传感器用于获取自行车的速度信息，并将所述速度信息发送给所述控制器；所述检 测电路(3)用于将生成的监测信号发送至所述控制器；所述控制器用于根据所述速度信息和所述监测信号确定电机助力数据。The speed sensor is used for acquiring the speed information of the bicycle, and sending the speed information to the controller; the detection circuit (3) is used for sending the generated monitoring signal to the controller; the controller uses for determining motor assist data according to the speed information and the monitoring signal.
- 根据权利要求8所述的电助力自行车力矩传动***，其特征在于，还包括电机，所述电机与所述控制器相连，所述控制器还用于基于所述电机助力数据控制所述电机。The torque transmission system for an electric-assisted bicycle according to claim 8, further comprising a motor, the motor is connected to the controller, and the controller is further configured to control the motor based on the motor assist data.
- 一种电助力自行车，其特征在于，包括权利要求8-9任一项所述自行车力矩传动***。An electric power-assisted bicycle, characterized in that it comprises the bicycle torque transmission system according to any one of claims 8-9.
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- 2020-12-09 CN CN202011429300.3A patent/CN112572683A/en active Pending
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2021
- 2021-02-23 WO PCT/CN2021/077435 patent/WO2022121117A1/en active Application Filing
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| CN103879505A (en) * | 2014-02-11 | 2014-06-25 | 苏州工业园区同盛车业有限公司 | Middle motor of electric bicycle |
| US9409623B1 (en) * | 2015-06-08 | 2016-08-09 | Motive Power Industry Co., Ltd. | Bicycle pedal structure capable of triggering auxiliary power |
| CN206218128U (en) * | 2016-11-22 | 2017-06-06 | 昆山朗德森机电科技有限公司 | For the torque sensor and detecting system of electric bicycle |
| CN206926778U (en) * | 2017-05-12 | 2018-01-26 | 榑林文雄 | A kind of bearing axle sleeve torque sensor |
| CN109305281A (en) * | 2018-09-06 | 2019-02-05 | 苏州盛亿电机有限公司 | Electrical bicycle middle shaft bilateral legpower high-precision detection device |
| CN109178186A (en) * | 2018-11-06 | 2019-01-11 | 深圳市奥酷曼智能技术有限公司 | Converse magnetostriction axis torque sensor |
| CN210793496U (en) * | 2019-09-30 | 2020-06-19 | 昆山朗德森机电科技有限公司 | Two-sided torque sensor of moped and moped |
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| CN112572683A (en) | 2021-03-30 |
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