TW201623088A - Bicycle transmission control device - Google Patents

Abstract

A bicycle transmission control device is basically provided with a transmission controller that is programmed to switch between a first control state and a second control state. The bicycle transmission control device operates in accordance with the first control state for controlling a transmission based on a first signal that is input from a first detector, which detects a rotation of a crank. The bicycle transmission control device operates in accordance with the second control state for controlling the transmission based on a second signal that is input from a second detector, which detects a value reflecting a bicycle speed.

Description

Bicycle transmission control device

The present invention relates to a control device for a bicycle shifting machine.

Patent Document 1 discloses a technique for controlling a transmission based on an output signal of one of a step signal sensor or a vehicle speed sensor in such a manner that the number of rotations of the crank is maintained within a certain range.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 9-123978

In the prior art, depending on the driving state of the bicycle, the speed ratio is changed at an inappropriate timing.

It is an object of the present invention to provide a control device for a bicycle speed changer that can change a speed ratio at an appropriate timing.

[1] A control device for a bicycle speed changer according to an aspect of the present invention is operable to control a first control state of a transmission based on a first signal input from a first detecting unit that detects rotation of a crank, and The second detecting unit that detects the value reflecting the bicycle speed is transmitted The second signal is input to control the second control state of the aforementioned transmission.

[2] In one aspect of the control device for a bicycle shifting machine, the second detecting unit detects rotation of a wheel of the bicycle.

[3] In one aspect of the control device for the bicycle speed change device, the first control state and the second control state are switched based on the first signal and the second signal.

[4] In one aspect of the control device for the bicycle shifting device, the first control state and the second control are switched based on the first signal and the second signal, and a human driving force supplied to the crank. status.

[5] In one aspect of the control device for the bicycle speed change device, the first control state and the second control state are switched in accordance with a human power driving force supplied to the crank.

[6] In one aspect of the control device for the bicycle shifting device, the number of rotations of the crank according to the first signal is equal to or greater than the maximum number of rotations of the crank according to the second signal, and according to the first signal, The control signal for controlling the aforementioned transmission is output.

[7] In one aspect of the control device for a bicycle shifter, the maximum number of rotations of the crank according to the second signal is greater than the number of rotations of the crank based on the first signal, and the output is used based on the second signal. To control the control signal of the aforementioned transmission.

[8] In one aspect of the control device for the bicycle shifting device, the maximum number of rotations of the crank according to the second signal is larger than the number of rotations of the crank according to the first signal, and the human driving force is not reached. The specific value is outputted to control the control signal of the aforementioned transmission according to the second signal.

[9] One of the control devices of the bicycle shifting machine described above: The maximum number of rotations of the crank of the second signal is larger than the number of rotations of the crank according to the first signal, and the human driving force is a specific value or more, and a control signal for controlling the transmission is output according to the first signal. .

[10] In one aspect of the control device for a bicycle shifter, when the human driving force is equal to or greater than a specific value, a control signal for controlling the transmission is output based on the first signal.

[11] In one aspect of the control device for the bicycle speed changer, if the human power driving force is not up to a specific value, a control signal for controlling the transmission is output based on the second signal.

[12] In one aspect of the control device for a bicycle shifting machine, the human driving force is input from a driving force sensor that outputs a third signal in accordance with a human driving force supplied to the crank. The third signal is obtained.

[13] In one aspect of the control device for a bicycle shifting device, when the transmission is controlled by the first signal, the number of rotations of the crank according to the first signal is set to a specific number of crank rotations or a specific range. The number of crank rotations is output to control the control signals of the aforementioned transmission.

[14] In one aspect of the control device for a bicycle shifting device, when the transmission is controlled by the second signal, the maximum number of rotations of the crank according to the second signal is a specific number of crank rotations or a specific range. The number of crank rotations within the output is used to control the control signals of the aforementioned transmission.

[15] In one aspect of the control device for a bicycle shifting machine, the maximum number of rotations of the crank according to the second signal is based on the second signal, information on a gear ratio, and a diameter of a wheel of the bicycle, Find the radius, or the information of the perimeter.

[16] In one aspect of the control device for the bicycle speed changer, if an abnormality occurs in the first signal, a control signal for controlling the transmission is output based on the second signal.

[17] In one aspect of the control device for a bicycle shifter, if an abnormality occurs in the second signal, a control signal for controlling the transmission is output based on the first signal.

[18] In one aspect of the control device for a bicycle shifting machine, the first detecting unit detects that a minimum angle at which the crank is rotated is smaller than a minimum angle at which the second detecting unit can detect that the wheel is rotated.

[19] In one aspect of the control device for a bicycle speed changer, when the number of rotations of the crank is equal to or greater than a first upper limit value, the speed ratio is increased when the speed changer is controlled by the first signal When the transmission is operated, and the number of rotations of the crank is equal to or less than the first lower limit when the transmission is controlled by the first signal, the transmission is operated such that the speed ratio is reduced. When the number of the maximum number of rotations of the crank corresponding to the second signal is equal to or greater than the second upper limit value, the speed changer is operated so that the speed changer is increased. When the number of the maximum number of rotations of the crank corresponding to the second signal is equal to or less than the second lower limit value, the speed changer is operated so that the speed ratio becomes smaller.

[20] In one aspect of the control device for the bicycle speed changer, the second upper limit value is smaller than the first upper limit value.

[21] In one aspect of the control device for the bicycle shifting machine, the second lower limit value is greater than the first lower limit value.

[22] One of the control devices of the bicycle shifting machine described above: The range from the second upper limit to the second lower limit is 25 to 50% of the range from the first upper limit to the first lower limit.

[23] In one aspect of the control device for a bicycle shifting device, when the transmission is controlled by the first signal, the number of rotations of the crank is equal to or higher than a first upper limit value or lower than a first lower limit value. When the number of rotations of the crank does not reach the first upper limit value and exceeds the first lower limit value during the period from the time of the first standby period, the transmission is not operated, and the second signal is not operated. When the number of the maximum number of rotations of the crank is equal to or higher than the second upper limit value or lower than the second lower limit value, the number of rotations of the crank is not reached until the second standby period elapses. When the second upper limit value is exceeded and the second lower limit value is exceeded, the transmission is not operated.

[24] In one aspect of the control device for the bicycle shifter, the second waiting period is equal to or less than the first standby period.

[25] In one aspect of the control device for a bicycle shifting machine, the first waiting period and the second waiting period are set according to a running load of the bicycle.

[26] In one aspect of the control device for the bicycle shifting device, when the running load of the bicycle includes the same range, the second waiting period is equal to or less than the first waiting period.

[27] In one aspect of the control device for the bicycle speed changer, the first waiting period and the second waiting period are set based on a previous shifting operation of the transmission and a running load of the bicycle.

The control device for the bicycle shifting machine of the present invention can be changed at an appropriate timing. More gear ratio.

10‧‧‧Bicycle

12‧‧‧ frame

12A‧‧‧ front fork

14‧‧‧ handlebars

16‧‧‧front wheel (wheel)

16A‧‧ spokes

18‧‧‧ Rear wheel

18A‧‧‧ axle

18B‧‧ spokes

20‧‧‧ drive mechanism

22‧‧‧Transmission control device

24‧‧‧Transmission

26‧‧‧1st detection device

28‧‧‧2nd detection device

30‧‧‧Drive force sensor

32‧‧‧ crank

34‧‧‧Front sprocket

36‧‧‧After sprocket

38‧‧‧Chain

40‧‧‧ crankshaft

42‧‧‧ crank arm

44‧‧‧ pedal

46‧‧‧ pedal shaft

48‧‧‧Motor unit

50‧‧‧Transmission machine

52A, 52B‧‧‧ magnet

54‧‧‧1st detection department

56A, 56B‧‧‧ components

58‧‧‧1st rotation number calculation unit

60‧‧‧ Magnet

62‧‧‧2nd Inspection Department

64‧‧‧ components

66‧‧‧Speed calculation department

68‧‧‧Transmission status detection device

70‧‧‧Control device

72‧‧‧2nd rotation number calculation unit

74‧‧‧Rotation comparison department

76‧‧‧Drive Force Computing Department

78‧‧‧Selection value setting section

80‧‧‧Transmission Determination Department

82‧‧‧Motor Control Department

84‧‧‧Memory Department

S1‧‧‧1st signal

S2‧‧‧2nd signal

S3‧‧‧3rd signal

SA‧‧‧ control signal

The first figure is a side view of the bicycle of the first embodiment.

The second figure is a block diagram showing the electrical composition of the bicycle of the first figure.

The third diagram is a flow chart of the switching process of the control state executed by the control device of the second figure.

The fourth diagram is a flow chart of the shifting process performed by the control device of the second figure.

The fifth diagram is a flowchart of the shifting process executed by the control device of the second embodiment.

Fig. 6 is a flowchart showing a shift process of a modification of the second embodiment.

The seventh drawing is a flowchart of the shift processing of the modification of the second embodiment.

The eighth diagram is a flowchart of the switching process of the modification of each embodiment.

The ninth drawing is a flowchart of the switching process of the modification of each embodiment.

The tenth diagram is a flowchart of the switching process of the modification of each embodiment.

(First embodiment)

The configuration of the bicycle 10 will be described with reference to the first figure.

The bicycle 10 includes a frame 12, a handlebar 14, a front wheel 16, a rear wheel 18, a drive mechanism 20, a shift control device 22, a shifting device 24, a first detecting device 26 (see FIG. 2), and a second detecting device 28. (Refer to the second drawing), the driving force sensor 30, the shifting state detecting device 68 (refer to the second drawing), and the control device 70.

The drive mechanism 20 includes a crank 32, a front sprocket 34, a rear sprocket 36, a chain 38, and a pedal 44.

The crank 32 includes a crank shaft 40 rotatably supported by the frame 12 and left and right crank arms 42. The left and right pedals 44 each include a pedal shaft 46. The left and right crank arms 42 are attached to the crankshaft 40. The present system of the pedal 44 is mounted to the crank arm 42 in a manner rotatable about the pedal shaft 46.

The front sprocket 34 is coupled to the crankshaft 40. The front sprocket 34 is set to be coaxial with the crankshaft 40. The front sprocket 34 may be coupled to the crankshaft 40 so as not to rotate relative thereto, or may be coupled to the front sprocket 34 when the crankshaft 40 is rotated forward, through a one-way clutch (not shown). .

The rear sprocket 36 is mounted for rotation about the axle 18A of the rear wheel 18. The rear sprocket 36 is coupled to the rear wheel 18 via a one-way clutch. The chain 38 is wound around the front sprocket 34 and the rear sprocket 36. When the crank 32 is rotated by the human driving force applied to the pedal 44, the rear wheel 18 is rotated by the front sprocket 34, the chain 38, and the rear sprocket 36.

The shift control device 22 is attached to the handlebar 14. The shift control device 22 is electrically connected to the control device 70 by a wire (not shown). When the shift control device 22 is operated by the operator, the shift control device 22 transmits an upshift signal or a downshift signal to the control device 70. Among them, the upshift is a shift in a direction in which the speed ratio γ is increased, and the downshift is a shift in a direction in which the speed ratio γ is small.

As shown in the second figure, the transmission device 24 includes a motor unit 48 and a transmission 50. The transmission 50 is realized by a built-in transmission integrated with the hub of the rear wheel 18 (refer to the first figure). The transmission 50 is comprised of a planetary gear mechanism controlled by a motor unit 48. The transmission 50 is a stepwise change of the speed ratio γ. The motor unit 48 changes the gear ratio γ by changing the connection state of the gears constituting the planetary gear mechanism of the transmission 50. Motor unit 48 is by The illustrated wires are electrically connected to the control device 70. The motor unit 48 includes an electric motor and a speed reducer that rotates the output of the electric motor to reduce the rotation. The electric motor is coupled to the transmission 50 via a speed reducer.

The first detecting device 26 detects the rotation of the crank 32 (refer to the first figure). The first detecting device 26 includes two magnets 52A and 52B and a first detecting unit 54 attached to the frame 12 . The magnet 52A is an annular magnet, and the plurality of magnetic poles are alternately arranged in the circumferential direction. The magnet 52A is provided on the crankshaft 40 or the crank arm 42 and is disposed coaxially with the crankshaft 40. The magnet 52B is attached to either of the right and left crank arms 42.

The first detecting unit 54 is electrically connected to the control device 70 by a wire (not shown). The first detecting unit 54 transmits the first signal S1 to the control device 70 in accordance with the rotation of the crank 32. The first detecting unit 54 is a so-called step signal sensor. The first detecting unit 54 includes an element 56A that outputs a value that changes according to the magnetic field of the magnet 52A, and an element 56B that detects the magnetic field of the magnet 52B. Element 56A detects the relative angular position of the crank relative to the frame. Element 56B detects the reference angular position of the crank relative to the frame.

The first detecting unit 54 includes a first number-of-rotation calculating unit 58 that calculates the number of rotations of the crank 32 per unit time (hereinafter referred to as "first number of rotations NA") by the outputs of the elements 56A and 56B. The first detecting unit 54 outputs the first signal S1 including the information indicating the first number of rotations NA to the control device 70. The element 56A outputs a signal obtained by dividing 360° by the number of poles of the same polarity as a one-cycle signal when the crankshaft makes a rotation. Element 56B outputs a rotation of the crankshaft as a one-cycle signal.

The element 56B outputs a value according to the rotation angle of the crank 32 (refer to the first figure). The minimum angle of the crank 32 (refer to the first figure) that can be detected by the first detecting unit 54 is 180 degrees or less. It is preferably 15 degrees, more preferably 6 degrees.

The second detecting device 28 detects the rotation of the front wheel 16, that is, the front wheel 16 (see the first drawing). The second detecting device 28 includes a magnet 60 attached to the spoke 16A of the front wheel 16, and a second detecting portion 62 attached to the front fork 12A of the frame 12. Additionally, the magnet 60 can also be mounted to the spokes 18B of the rear wheel 18. At this time, the second detecting unit 62 is attached to the chain stay of the frame 12 . The second detecting unit 62 is fixed to the frame 12 by bolts, nuts, straps, or the like. In the following description, the second detecting unit 62 detects the rotation of the front wheel 16. However, when the second detecting unit 62 detects the rotation of the rear wheel 18, since only the front wheel 16 is replaced with the rear wheel 18, the description thereof is omitted. .

The second detecting unit 62 is electrically connected to the control device 70 by a wire (not shown). The second detecting unit 62 transmits the second signal S2 to the control device 70 in accordance with the rotation of the front wheel 16. The second detecting unit 62 is a so-called vehicle speed sensor. The second detecting unit 62 includes an element 64 that outputs a value that changes in accordance with the position of the magnet 60, and a vehicle speed calculation unit that calculates the travel distance per unit time (hereinafter, "vehicle speed V") from the output of the element 64. 66.

Element 64 outputs a rotation of the front wheel 16 (see the first figure) as a one-cycle signal. That is, the minimum angle of the front wheel 16 detectable by the second detecting unit 62 is 360 degrees. The minimum angle that can be detected during a rotation of the crank 32 is less than the minimum angle that can be detected in a rotation of the front wheel 16.

The vehicle speed calculation unit 66 multiplies the circumference of the front wheel 16 (refer to the first map) that has been memorized in advance (hereinafter referred to as "circumference L") by the number of rotations of the front wheels 16 (refer to the first map) per unit time. To calculate the speed V. The second detecting unit 62 outputs a second signal S2 including information on the vehicle speed V to the control device 70. Alternatively, the vehicle speed V can be calculated using the diameter or radius of the front wheel 16 (see the first figure). At this time, the diameter or radius of the front wheel 16 (refer to the first figure) is previously memorized in the second check. Measuring unit 62.

The shift state detecting means 68 detects the current shifting state of the shifting device 24. The shift state detecting device 68 may be provided in the motor unit 48 or in the shift control device 22. The shift state detecting means 68 outputs information related to the shift position, that is, the shift ratio γ. The shift state detecting means 68 detects a rotation angle of a specific portion of the electric motor or the speed reducer in the motor unit 48, a rotation angle of a specific position of the transmission 50, and the like. The shift state detecting device 68 is constituted by a detecting device including a potentiometer, a magnet, a magnetic sensor for detecting the magnet, and the like. The shift state detecting device 68 is electrically connected to the control device 70.

The driving force sensor 30 detects the human driving force supplied to the crank 32 (refer to the first figure). The driving force sensor 30 outputs a third signal S3 including a signal according to a human driving force. The driving force sensor 30 can be disposed between the crankshaft 40 shown in the first figure and the front sprocket 34, or can be disposed on the crankshaft 40 or the front sprocket 34, or can be disposed on the crank arm 42 or the pedal. 44. The driving force sensor 30 can be implemented using, for example, a strain sensor, a magnetostrictive sensor, an optical sensor, a pressure sensor, or the like, if the output is in accordance with the force applied to the crank arm 42 or the pedal 44. The sensor of the driving force signal can also be used with any of the sensors.

As shown in the second figure, the control device 70 includes a second rotation number calculation unit 72, a rotation number comparison unit 74, a drive force calculation unit 76, a selection value setting unit 78, a shift determination unit 80, a storage unit 84, and Motor control unit 82. The control device 70 is composed of a memory including an arithmetic processing unit such as a CPU and a memory, and can realize a plurality of functions. The second rotation number calculation unit 72, the rotation number comparison unit 74, the drive force calculation unit 76, the selection value setting unit 78, the shift determination unit 80, and the motor control unit 82 represent functions of the control device 70. The control device 70 may include a plurality of arithmetic processing devices, and may also include a plurality of microcomputers. The second signal S2 is input to the second rotation number calculation unit 72. Number of rotations The comparison unit 74 and the selection value setting unit 78 are input with the first signal S1.

The second rotation number calculation unit 72 estimates the crank 32 based on the second signal S2 from the second detecting unit 62, the information on the circumferential length L of the front wheel 16 (see the first figure), and the gear ratio γ at that time. The second rotation number NB. Specifically, the second rotation number calculation unit 72 calculates the second rotation number NB by dividing the vehicle speed V included in the second signal S2 by the circumferential length L of the front wheel 16 and the gear ratio γ. The second rotation number calculation unit 72 outputs the second rotation number NB to the rotation number comparison unit 74. The relationship between the gear ratio γ and the detection result of the shift state detecting device 68 is associated in advance, and for example, the correspondence relationship is stored in the memory. The second rotation number calculation unit 72 calculates the result of the shift state detecting device 68, calculates the gear ratio γ using the corresponding gear ratio γ, or obtains the gear ratio γ using a function.

The number of rotations of the front wheel 16 (refer to the first figure) may be larger than the value obtained by multiplying the number of rotations of the crank 32 by the gear ratio γ. For example, in the case of traveling downhill or the like, even if the crank 32 is stopped, the front wheel 16 is in a state of being rotated. Therefore, the second rotation number NB calculated based on the output of the second detecting unit 62 is a value indicating that the second rotation number NA is larger than the first rotation number NA. Further, the minimum angle at which the front wheel 16 can detect a rotation is larger than the minimum angle at which the crank 32 can detect a rotation, so that the calculation of the second rotation number NB is delayed, and the calculated second rotation The number NB has a case where the value is larger than the first rotation number NA. The second number of rotations NB corresponds to the number of rotations of the crank 32 when the crank 32 rotates in synchronization with the front wheel 16, that is, corresponds to the maximum number of rotations of the crank 32.

The number-of-rotations comparison unit 74 compares the first number of rotations NA indicated by the information included in the first signal S1 with the second number of rotations NB indicated by the information contained in the signals output by the second number-of-rotations calculation unit 72. The number-of-rotations comparison unit 74 is one of the first number of rotations NA and the second number of rotations NB, and outputs one of them to the selection value setting unit 78. The driving force calculation unit 76 is based on the driving force The third signal S3 of the sensor 30 calculates the human driving force T and outputs the human driving force T to the selection value setting unit 78. The first rotation number NA and the second rotation number NB are input to the selection value setting unit 78. The selection value setting unit 78 sets the first rotation number NA or the second rotation number NB as the selection value N based on the comparison result of the rotation number comparison unit 74 and the human power driving force T or based on the comparison result of the rotation number comparison unit 74. The selection value N is output to the shift determination unit 80.

The control device 70 switches between controlling the first control state of the transmission 50 based on the first signal S1 and controlling the second control state of the transmission 50 based on the second signal S2. The control device 70 switches the first control state and the second control state based on the first rotation number NA, the second rotation number NB, and the human power driving force T.

Referring to the third figure, the switching process of the control state by the control device 70 will be described.

In step S11, the second number of rotations calculation unit 72 calculates the second number of rotations NB based on the vehicle speed V. Next, in step S12, the selection value setting unit 78 compares the first rotation number NA and the second rotation number NB, and when the first rotation number NA is equal to or greater than the second rotation number NB, the process proceeds to step S13. The first rotation number NA is set to the selection value N. Further, in the previous switching process, when the first number of rotations NA is set to the selection value N, the selection value N is maintained at the first number of rotations NA. In the previous switching process, when the second rotation number NB is set to the selection value N, the selection value N is changed to the first rotation number NA by the second rotation number NB, and the control state is changed by the second control state. Switch to the first control state.

When the second rotation number NB is larger than the first rotation number NA, the selection value setting unit 78 proceeds to step S14 and determines whether or not the human power driving force T is equal to or greater than the specific value TX. When the human driving force T is equal to or greater than the specific value TX, the process proceeds to step S15, and the first number of rotations NA is set to the selected value N. Among them, in the previous switching process, when the first number of rotations NA is set to be selected When the value is N, the selected value N is maintained at the first number of rotations NA. In the previous switching process, when the second rotation number NB is set to the selection value N, the selection value N is changed to the first rotation number NA by the second rotation number NB, and the control state is changed by the first control state. Switch to the second control state.

In step S14, when the human power driving force T is less than the specific value TX, the selection value setting unit 78 moves to step S16 and sets the second rotation number NB to the selection value N. Further, in the previous switching process, when the second number of rotations NB is set to the selection value N, the selection value N is maintained as the second number of rotations NB. In the previous switching process, when the first rotation number NA is set to the selection value N, the selection value N is changed from the first rotation number NA to the second rotation number NB, and the control state is changed by the second control state. Switch to the first control state. The specific value TX is selected, for example, between 1 Nm and 3 Nm.

The shift determination unit 80 shown in the second diagram outputs an upshift signal or a downshift signal to the motor control unit 82 based on the selection value N set in the selection value setting unit 78. The shift determination unit 80 can read the first determination value NX and the second determination value NY that are stored in the storage unit 84. The first determination value NX and the second determination value NY are threshold values. The shift determination unit 80 outputs an upshift signal when the selected value N is equal to or greater than the first determination value NX, and outputs a downshift signal when the selected value N is equal to or less than the second determination value NY. Among them, the first determination value NX is preferably a value obtained by selecting the second determination value NY or more. For example, the first determination value NX is selected from 65 rpm to 70 rpm, and the second determination value NY is selected to be, for example, a value of 60 rpm to 65 rpm.

The first determination value NX and the second determination value NY are set to control the value of the transmission 50 such that the selection value N is a specific number of crank rotations or a crank rotation number of a specific range. In other words, when the transmission 50 is controlled based on the first signal S1, the shift determination unit 80 controls the first rotation number NA to be a specific number of crank rotations or a specific range of crank rotation numbers. Gearbox 50. Further, when the speed change determination unit 80 controls the transmission 50 based on the second signal S2, the speed change unit 80 controls the speed change machine 50 such that the second number of rotations NB becomes a specific number of crank rotations or a crank rotation number of a specific range.

The sequence of the shift processing executed by the shift determining unit 80 will be described with reference to the fourth diagram.

The shift determination unit 80 determines in step S21 whether or not the selected value N is equal to or greater than the first determination value NX. When the selected value N is equal to or greater than the first determination value NX, the upshift signal is generated in step S22 and output to the motor control unit 82.

When the selected value N is less than the first determination value NX in step S21, the shift determination unit 80 determines in step S23 whether or not the selected value N is equal to or less than the second determination value NY. When the selection value N is equal to or less than the second determination value NY, the shift determination unit 80 generates a downshift signal in step S24 and outputs it to the motor control unit 82. In step S23, the shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82 when the selected value N is greater than the second determination value NY.

The motor control unit 82 shown in the second diagram controls the motor unit 48 based on the signal output from the shift determination unit 80 or the signal input from the shift control device 22. When the upshift signal is input, the motor control unit 82 outputs a drive signal SA (not shown) for shifting the control signal SA of the shifting portion of the shifting device 24 to the motor unit 48. When the downshift signal is input, the motor control unit 82 outputs a control signal SA (not shown) for shifting the control signal SA of the shifting portion of the shifting device 24 to the motor unit 48. Further, when the upshift signal is input at the maximum gear ratio γ, and the downshift signal is input at the minimum gear ratio γ, the motor control unit 82 does not drive the motor unit 48.

The function and effect of the control device 70 will be described.

(1) The minimum angle of the crank 32 detectable by the first detecting portion 54 is smaller than the minimum angle portion of the front wheel 16 detectable by the second detecting portion 62. In other words, the accuracy of the first rotation number NA calculated based on the output of the first detecting unit 54 is higher than the second rotation number NB calculated by the output of the second detecting unit 62. Therefore, by controlling the transmission 50 based on the first rotation number NA, the transmission 50 can be more appropriately changed than when the transmission 50 is controlled based on the second rotation number NB.

When the transmission 50 is controlled based only on the first number of rotations NA, for example, when the rotation of the crank 32 is stopped while the bicycle 10 is running, the transmission is controlled to the downshift side so that the speed ratio γ is decreased. In the case shown above, when the user restarts the rotation of the crank 32, the speed ratio γ is too small, and the human driving force is not immediately transmitted to the wheel, and the number of rotations of the crank 32 is difficult to be in a specific range. .

The control device 70 is switchable to control the first control state of the transmission 50 based on the first signal S1 and the second control state of the transmission 50 based on the second signal S2. Therefore, the gear ratio γ can be controlled based on the signals S1 and S2 which are commensurate with the running condition of the bicycle 10 and the like. Therefore, the gear ratio γ can be changed at an appropriate timing.

(2) For example, the accuracy of the second number of rotations NB calculated based on the output of the second detecting unit 62 is lower than the accuracy of the first number of rotations NA calculated based on the output of the first detecting unit 54. Therefore, in particular, when the vehicle speed V suddenly rises or falls, there is actually no case where the crank 32 and the front wheel 16 are rotating in synchronization, and the second rotation number NB is larger than the first rotation number NA.

When only the second rotation number NB is compared with the first rotation number NA to control the transmission device 24, the crank 32 and the front wheel 16 are actually rotated in accordance with the second rotation number NB, and the shift is increased. The case of γ.

When the second rotation number NB is larger than the first rotation number NA and the human power driving force T is equal to or greater than the specific value TX, the control device 70 controls the transmission 50 based on the first rotation number NA. Therefore, it is possible to control the load of the user, and even if the vehicle speed V changes rapidly, it is possible to suppress an inappropriate gear ratio γ.

(Second embodiment)

The control device 70 of the second embodiment will be described with reference to the fifth drawing. The control device 70 of the second embodiment executes the shifting process shown in Fig. 5 instead of the shifting process of the fourth embodiment of the first embodiment. The shifting process shown in the fifth figure is repeated until the power is turned off. Further, the memory unit 84 (see the second drawing) stores the first upper limit value NA1, the first lower limit value NA2, the second upper limit value NB1, the second lower limit value NB2, and the first standby period PA and the first 2 The table of the PB during the standby period replaces the judgment values NX and NY. The first upper limit value NA1, the first lower limit value NA2, the second upper limit value NB1, the second lower limit value NB2, and the first standby period PA and the second standby period PB are threshold values. In the above, the same components as those in the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description thereof will be omitted.

The sequence of the shift processing executed by the shift determining unit 80 will be described.

The shift determination unit 80 determines whether or not the selected value N selected by the selection value setting unit 78 in step S31 is the first number of rotations NA.

When the selected value N is the first rotation number NA, the shift determination unit 80 determines whether or not the selected value N is equal to or greater than the first upper limit value NA1 in step S31. When the selected value N is equal to or greater than the first upper limit value NA1, it is determined in step S33 whether or not the first standby period PA has passed since the previous shifting. In addition, the previous shifting speed refers to when the last upshift signal and the downshift signal are output to the transmission 50. The control device 70 performs a countup from the time when the upshift signal and the downshift signal are output to the transmission 50.

When the first standby period PA has passed since the previous shift, the shift determination unit 80 generates an upshift signal in step S34 and outputs it to the motor control unit 82. The shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82 when the first standby period PA has not elapsed in step S33.

When the selection value N is less than the first upper limit value NA1 in step S32, the shift determination unit 80 determines in step S35 whether or not the selected value N is equal to or lower than the first lower limit value NA2. When the selection value N is greater than the first lower limit value NA2 in step S35, the shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82. In other words, in the first control state, when the first number of rotations NA is less than the first upper limit value NA1 and greater than the first lower limit value NA2, the shift determination unit 80 does not output the upshift signal and the downshift. Any one of the signals is supplied to the motor control unit 82.

When the selection value N is equal to or less than the first lower limit value NA2 in step S35, the shift determination unit 80 determines in step S36 whether or not the first standby period PA has passed since the previous shift.

When the first standby period PA has passed since the previous shift, the shift determination unit 80 generates a downshift signal in step S37 and outputs it to the motor control unit 82. The shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82 when the first standby period PA has not elapsed in step S36.

In other words, when the control device 70 controls the transmission 50 based on the first signal, and the number of rotations of the crank 32, that is, the first rotation number NA is equal to or higher than the first upper limit value NA1, the speed ratio γ is increased. In the case where the transmission 50 is operated based on the first signal, when the first rotation number NA is equal to or lower than the first lower limit value, the speed ratio γ is decreased, and the speed change is performed. The machine 50 operates.

Further, when the control device 70 controls the transmission 50 based on the first signal, When the first rotation number NA is equal to or higher than the first upper limit value NA1 or less than the first lower limit value NA2, the number of rotations of the crank is less than the first upper limit value during the period from the first standby period PA. When NA1 exceeds the range of the first lower limit value NA2, the transmission 50 is not operated.

When the selection value N is the second rotation number NB in step S31, the shift determination unit 80 determines whether or not the selection value N is equal to or greater than the second upper limit value NB1 in step S38. When the selected value N is equal to or greater than the second upper limit value NB1, it is determined in step S39 whether or not the second standby period PB has passed by the previous shifting time. When the second standby period PB has elapsed, the upshift signal is generated in step S40 and output to the motor control unit 82. The shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82 when the second standby period PB has not elapsed in step S39.

When the selection value N is less than the second upper limit value NB1 in step S38, the shift determination unit 80 determines in step S41 whether or not the selected value N is equal to or lower than the second lower limit value NB2. The shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82 when the selection value N is greater than the second lower limit value NB2 in step S42. In other words, the shift determination unit 80 does not output the upshift signal and the downshift signal when the second number of revolutions NB is less than the second upper limit NB1 and greater than the second lower limit NB2 in the second control state. Either one of them goes to the motor control unit 82.

When the selected value N is equal to or lower than the second lower limit value NB2 in step S41, the shift determination unit 80 determines in step S36 whether or not the second standby period PB has passed by the previous shifting. When the second standby period PB has elapsed, the shift determination unit 80 generates a downshift signal in step S43 and outputs it to the motor control unit 82. When the second standby period PB has not elapsed in step S43, the shift determination unit 80 does not output any of the upshift signal and the downshift signal to the motor control unit 82.

In other words, when the second rotation number NB is equal to or greater than the second upper limit value NB1 and the speed ratio γ is increased, the speed changer 50 is configured to control the speed changer 50 when the second rotation number NB is equal to or greater than the second upper limit value NB1. When the second transmission number NB is equal to or less than the second lower limit value NB2, the speed changer γ is operated to reduce the speed ratio γ when the second rotation number NB is equal to or less than the second lower limit value NB2.

In addition, when the second rotation number NB is equal to or higher than the second upper limit value NB1 or lower than the second lower limit value NB2, the second standby number NB is equal to or lower than the second lower limit value NB2, and the second standby period is elapsed. In the period of PB, if the number of rotations of the crank is within the range that does not reach the second upper limit value NB1 and exceeds the second lower limit value NB2, the speed ratio γ of the transmission 50 is not changed.

The memory unit 84 stores the first upper limit value NA1, the first lower limit value NA2, the second upper limit value NB1, and the second lower limit value NB2. The second upper limit value NB1 is smaller than the first upper limit value NA1. The second lower limit value NB2 is greater than the first lower limit value NA2. The range from the second upper limit NB1 to the second lower limit NB2 is preferably 25 to 50% of the range from the first upper limit NA1 to the first lower limit NA2. For example, the first upper limit value NA1 is 70 rpm, the first lower limit value NA2 is 50 rpm, the second upper limit value NB1 is 67.5 rpm, and the second lower limit value NB2 is 52.5 rpm.

The memory unit 84 stores a table in which the first standby period PA and the second standby period PB are stored. The first waiting period PA and the second waiting period PB are set according to the control state, the magnitude of the running load R, and the previous shifting operation. Further, the running load R is calculated based on at least one of the human driving force applied to the pedal 44, the vehicle speed of the bicycle 10, and the number of rotations of the crank 32. The running load R is obtained, for example, by subtracting the kinetic energy that is changed by the bicycle from the input energy. The input energy can be obtained by integrating the torque generated by the crank and the number of crank rotations by the human driving force applied to the pedal 44. The energy of the bicycle changes can be determined by the weight of the bicycle and the rider, and the speed of the bicycle. The kinetic energy that the bicycle changes can be obtained by, for example, 1/2 m (v2-V1) ² . Among them, the first rotation number NA can be used as the vehicle speed of the bicycle 10. The number of rotations of the crank 32 can be a second rotation number NB. The running load R includes a first running load RA and a second running load RB. The first running load RA indicates, for example, that the bicycle 10 has a small running load R as when traveling downhill. The second running load RB indicates, for example, that the bicycle 10 has a large running load R as when traveling uphill. The second running load RB is greater than the first running load RA.

Table 1 is a table showing the relationship between the control state when the upshift condition is satisfied, the first running load RA, the previous shifting operation, and the first waiting period PA and the second waiting period PB. Further, the upshift condition is established when the first rotation number NA is larger than the upper limit value NA1 in the first control state, and is established when the second rotation number NB is larger than the upper limit value NB1 in the second control state.

The maximum period PAmax, the intermediate period PAmid, and the minimum period PAmin of the first standby period PA have a relationship of PAmax>PAmid>PAmin. The maximum period PBmax, the intermediate period PBmid, and the minimum period PBmin of the second standby period PB have a relationship of PBmax>PBmid>PBmin. The maximum period PAmax and the maximum period PBmax may be equal or different. The intermediate period PAmid and the intermediate period PBmid may be equal or different. The minimum period PAmin and the minimum period PBmin may be equal or different. The maximum period PAmax, PBmax is, for example, 1000 milliseconds. The period during which the intermediate periods PAmid and PBmid are, for example, half of the maximum periods PAmax and PBmax is 500 milliseconds. The minimum period PAmin and PBmin is, for example, a period of half of the intermediate period PAmid and PBmid, and is 250 milliseconds.

When the condition for the upshift at the time of the current shifting upshift is satisfied, and the running load R is equal to or greater than the first running load RA, the control device 70 sets the first waiting period PA or the second waiting period PB to the maximum period PAmax or Maximum period PBmax. In other words, when the running load R is large, for example, when the bicycle 10 is downshifted when traveling on a flat road, the period in which the upshift prohibition is set is set to be smaller than the running load R, for example, when traveling downhill long.

Table 2 is a table showing the relationship between the control state when the downshift condition is satisfied, the second running load RB, and the previous shifting operation, and the first waiting period PA and the second waiting period PB. The condition of the downshift is established when the first number of rotations NA is smaller than the lower limit value NA2 in the first control state, and is satisfied when the second number of rotations NB is smaller than the lower limit value NB2 in the second control state.

When the condition for the downshift at the time of the previous shifting operation upshift is satisfied, and the running load R is less than the second running load RB, the control device 70 sets the first waiting period PA or the second waiting period PB to the maximum. Period PAmax or maximum period PBmax. In other words, when the running load R is small, for example, when the bicycle 10 is upshifted when the bicycle 10 is traveling on a flat road, the period in which the downshift prohibition is set is set to be larger than the running load R, for example, when the vehicle is traveling uphill. The file is longer.

As shown in Tables 1 and 2, the first waiting period PA and the second waiting period PB are set in accordance with the previous shifting operation of the transmission 50 and the running load R of the bicycle 10. When the running load R of the bicycle 10 is included in the same range, the second waiting period PB is the first standby period PA. under.

The control device 70 achieves the following effects in addition to the effects (1) and (2) of the first embodiment.

(3) The first upper limit value NA1 and the second upper limit value NB1 are different. Therefore, the control device 70 can change the gear ratio γ using the upper limit values NA1 and NB1 suitable for each of the first control state and the second control state.

(4) The first lower limit value NA2 and the second lower limit value NB2 are different. Therefore, the control device 70 can change the gear ratio γ using the lower limit values NA2 and NB2 suitable for each of the first control state and the second control state.

(5) The second upper limit value NB1 is smaller than the first upper limit value NA1. Further, the second lower limit value NB2 is larger than the first lower limit value NA2. In other words, the range from the second upper limit NB1 to the second lower limit NB2 is smaller than the range from the first upper limit NA1 to the first lower limit NA2. Therefore, when the vehicle is in the second control state, specifically, when the driver stops the pedal and stops the rotation of the crank 32, or the first rotation number NA is smaller than the torque applied to the crank 32 such as the second rotation number NB, It becomes easy to shift gears. Therefore, when the torque applied to the crank 32 is large, the rider does not easily feel the sense of discomfort caused by the shifting operation of the transmission 50 as compared with the case where the shift is performed. Further, when the torque applied to the crank 32 is small, the shifting operation is facilitated, so that the frequency of the shifting operation failure due to the large torque applied to the crank 32 can be reduced.

(6) When the speed ratio γ is increased, the number of rotations of the crank 32 is likely to be small. Therefore, after the speed ratio γ becomes large, the downshift condition is easily established. Further, when the speed ratio γ is small, the number of rotations of the crank 32 is likely to increase. Therefore, after the shift ratio γ becomes small, the upshift condition is easily established. The control device 70 is configured to shift from the previous shifting operation to the passage of the first standby period PA when the upshift condition or the downshift condition is satisfied. The gear ratio γ is not changed until the second standby period PB. Therefore, it is possible to suppress the shifting operation from being repeated over a short period of time.

(7) When the current shift operation is the upshift and the running load R is equal to or higher than the first running load RA, the control device 70 can be reduced compared with the standby periods PA and PB when the downshift condition is satisfied. Standby periods PA and PB when the upshift condition is established. Therefore, in a state where the running load R such as downhill is small, the upshift becomes easy. Therefore, the rider does not easily feel the sense of discomfort caused by the shifting operation of the transmission 50, and the frequency of failure of the shifting operation can be reduced.

(8) When the control device 70 is downshifting the current shifting operation and the running load R is less than the second running load RB, the control period 70 can be reduced as compared with the standby periods PA and PB when the upshifting condition is satisfied. Standby periods PA and PB when the gear conditions are satisfied. Therefore, in a state where the running load R such as an uphill is large, it is easy to downshift.

(9) When the running load R is included in the same range, the second waiting period PB is equal to or lower than the first waiting period PA. Therefore, when the second number of rotations NB is larger than the second control state of the first number of rotations NA, the shifting is facilitated.

(Modification)

The specific form that can be obtained by the present control device is not limited to the form illustrated in each of the above embodiments. This control device can obtain various forms different from the above embodiments. The modification of each of the above embodiments shown below is an example of various forms that can be obtained by the present control device.

‧ The shifting process of the second embodiment can be changed to the process shown in the sixth figure. In this modification, the first determination value NX and the second determination value NY are stored in the storage unit 84. The shift determination unit 80 performs a process of step S51 of determining whether or not the selected value N is equal to or greater than the first determination value NX, instead of the process of step S32. The shift determination unit 80 performs a determination as to whether or not the selected value N is the first determination value. The processing of step S54 is replaced by the processing of step S54 above NX. Further, the shift determination unit 80 performs a process of step S52 of determining whether or not the selected value N is equal to or less than the second determination value NY, instead of the process of step S35. The shift determination unit 80 performs a process of step S54 of determining whether or not the selected value N is equal to or less than the second determination value NY, instead of the process of step S41. The shifting process shown in the sixth figure is repeated until the power is turned off. When the determination in step S51 is affirmative, the shift determination unit 80 proceeds to step S33, and if the determination is negative, proceeds to step S52. When the determination in step S52 is affirmative, the shift determination unit 80 proceeds to step S36, and if the determination is negative, the shift processing is terminated. When the determination in step S53 is affirmative, the shift determination unit 80 proceeds to step S39, and if the determination is negative, the routine proceeds to step S54. When the determination in step S54 is affirmative, the shift determination unit 80 proceeds to step S42, and if the determination is negative, the shift processing is terminated. In the process shown in FIG. 6, when the shift is performed based on the first rotation number NA and the shift is performed based on the second rotation number NB, the threshold value of the shift condition is not changed.

‧ In the shifting process of the second embodiment, steps S33, S36, S39, and S42 shown in the fifth figure may be omitted. That is, as shown in the seventh figure, the control device 70 outputs the upshift signal when the selection value N is equal to or higher than the upper limit values NA1, NB1 in steps S32 and S38, and ends the shift processing. In step S35 and step S41, the control device 70 outputs a downshift signal when the selected value N is equal to or higher than the lower limit values NA2 and NB2, and ends the shift processing.

In the second embodiment, the control device 70 can calculate at least 1 of the first upper limit value NA1, the first lower limit value NA2, the second upper limit value NB1, and the second lower limit value NB2 by calculation. One. For example, the memory unit 84 stores the first upper limit value NA1 and the first lower limit value NA2. In the second control state, the control device 70 sets the value obtained by multiplying the first upper limit value NA1 by the first coefficient of "1" or more as the second upper limit value NB1, and multiplies the first lower limit value NA2 by the second lower limit value NB1. Earned by the second coefficient that does not reach "1" The value is set to the second lower limit value NB2.

In the second embodiment, the first waiting period PA may be set to a constant value regardless of the running load R and the previous shifting operation.

In the second embodiment, the second waiting period PB may be set to a constant value regardless of the running load R and the previous shifting operation.

In the second embodiment, the first waiting period PA and the second waiting period PB may be made equal.

In the second embodiment, the second standby period PB may be set to be equal to or lower than the first standby period, regardless of the running load R and the previous shifting operation.

In the second embodiment, the control device 70 may calculate at least one of the first waiting period PA and the second waiting period PB by calculation. For example, the memory unit 84 stores the maximum period Pmax. The control device 70 calculates the first waiting period PA or the second waiting period PB by multiplying the maximum period Pmax by the correction coefficient according to the control state, the running load R, and the previous shifting operation.

‧ The switching process of each embodiment can also be changed to the process shown in the eighth figure. In other words, the control device 70 switches between the first control state and the second control state based on the human power driving force T. Specifically, in step S61, after the second number-of-rotations calculation unit 72 calculates the second number of rotations NB, the selection value setting unit 78 determines in step S62 whether or not the human-power driving force T is equal to or greater than the specific value TX. When the human driving force T is equal to or greater than the specific value TX, the selection value setting unit 78 moves to step S63, and sets the first rotation number NA to the selection value N when the human driving force T is less than the specific value TX. The selection value setting unit 78 moves to step S64 and sets the second rotation number NB to the selection value N.

‧ In the switching process of each embodiment, the steps shown in the third figure may be omitted. The processing of S14 and step S15. In other words, as shown in FIG. 9, the control device 70 sets the first number of rotations NA to the selection value N when the first number of rotations NA is equal to or greater than the second number of rotations NB, and the first number of rotations NA is When the second rotation number NB is not reached, the second rotation number NB is set to the selection value N.

‧ The switching process of each embodiment can also be changed to the process shown in the tenth figure. The control device 70 sets the first rotation number NA as the selection value N in the initial setting. The control device 70 determines in step S71 whether or not the first number of rotations NA is the selection value N. When the first rotation number NA is the selection value N, it is determined in step S72 whether or not an abnormality has occurred in the first signal S1. When it is determined in step S72 that an abnormality has occurred in the first signal S1, the control device 70 switches the second number of rotations NB to the selection value N in step S73. Further, in step S72, the control device 70 determines that the selection value N is maintained at the first rotation number NA when the first signal S1 is not abnormal, and the processing ends.

When it is determined in step S71 that the first rotation number NA is not the selection value N, that is, when the second rotation number NB is the selection value N, the control device 70 ends the selection value N at the second rotation number NB. This processing.

Here, it is determined that the first signal S1 has an abnormality series: it is determined that the bicycle is in the running state by the second signal S2, and the first number of rotations NA included in the first signal S1 does not change at a constant value. Or when the first rotation number NA is too large. When the bicycle 10 is in the running state and the first number of rotations NA is not changed by a constant value, the series is such that mud or the like adheres to the first detecting unit 54 and the first detecting unit 54 is broken, and the magnets 52A and 52B are cranked. 32 is disconnected, or an electric wire (not shown) that connects the first detecting unit 54 and the control device 70 is disconnected. In addition, when the first number of rotations NA is excessively large, for example, a short-circuit failure inside the first detecting unit 54 or the like is cited.

In the modification shown in the tenth diagram, the control device 70 sets the second rotation number NB as the selection value N in the initial setting, and may also set the first value when the second signal S2 is abnormal. The number of rotations NA is switched to the selection value N. In the initial setting, the second rotation number NB or the first rotation number NA is selected, and the user can select it. In this case, for example, a control device 70 such as a bicycle computer or a personal computer having an input interface is electrically connected, and the initial setting is performed by passing through these.

‧ The processing of the modification shown in the tenth diagram can be added to the switching processing shown in the third figure. That is, after the steps S13 and S15 of the third figure, the processing to the steps S51 to S53 is executed, and after the step S16, the processing of the modification shown in the tenth embodiment is performed.

‧ In the switching process of each embodiment, the processing sequence of step S12 and step S14 shown in the third figure may be replaced. In this case, for example, when the human power driving force T is equal to or greater than the specific value TX and the human driving force T is equal to or greater than the specific value TX, the control device 70 proceeds to step S13. Further, when the human driving force T is less than the specific value TX in step S12, it is determined in step S14 whether or not the first number of rotations NA is equal to or greater than the second number of rotations NB. When it is determined in step S14 that the first number of rotations NA is equal to or greater than the second number of rotations NB, the process proceeds to step S15, and the first number of rotations NA is set to the selection value N. When it is determined in step S14 that the first number of rotations NA is less than the second number of rotations NB, the process proceeds to step S16, and the second number of rotations NB is set to the selected value N.

‧ The magnet 52A of the first detecting device 26 of each embodiment may be attached to the pedal 44.

‧ The first detecting unit 54 of the first detecting device 26 of each embodiment may be attached to the crank 32, and the magnets 52A and 52B may be attached to the frame 12. At this time, the first detecting unit 54 transmits the first signal S1 to the control device 70 by wireless communication.

The output of the elements 56A and 56B of the first detecting device 26 of each embodiment may be directly input to the control device 70, or may be input to the control device 70 after the outputs of the elements 56A and 56B are amplified. At this time, the control device 70 has the function of the first rotation number calculation unit 58. The first rotation number NA is calculated by the control device 70.

‧ The element 56A of the first detecting device 26 of each embodiment may be formed as a rotation angle sensor mounted around the crankshaft 40.

‧ At least one of the elements 56A and 56A of the first detecting device 26 and the element 64 of the second detecting device 28 of each embodiment may be configured by an optical sensor.

‧ The second detecting device 28 of each embodiment can be attached to the rear wheel 18, that is, the rear wheel 18, and the magnet 60 can be attached to the frame 12 to change the rotation of the rear wheel 18. At this time, the second detecting unit 62 transmits the first signal S1 to the control device 70 by wireless communication.

‧ The output of the element 64 of the second detecting device 28 of each embodiment may be directly input to the control device 70, or the output of the element 64 may be amplified, and then input to the control device 70. At this time, the control device 70 has the function of the vehicle speed calculation unit 66, and the control device 70 calculates the second rotation number NB.

‧ A hub generator can be used instead of the magnet 60 and the element 64 of the second detecting device 28 of each embodiment. The hub generator outputs a periodic signal or a pulse signal to the vehicle speed computing unit 66, for example, according to each specific rotation angle of the front wheel 16.

‧ The second detecting device 28 of each embodiment can be configured by a GPS (Global Positioning System) receiver. At this time, the second detecting device 28 or the control device 70 calculates the second number of rotations NB based on the moving distance per unit time of the bicycle 10, the information on the circumferential length L of the front wheel 16, and the gear ratio γ at that time.

‧ The minimum angle of the front wheel 16 detectable by the second detecting unit 62 of each embodiment may be equal to or smaller than the minimum angle of the crank 32 detectable by the first detecting unit 54. At this time, for example, the first detecting unit 54 includes the magnet 52B and the element 56B, and the magnet is rotated once to detect the magnet. The configuration of the position of 52A is such that the second detecting unit 62 includes a hub dynamo. In this modification, the accuracy of the number of rotations calculated in accordance with the output of the second detecting unit 62 is higher than the number of rotations calculated in accordance with the output of the first detecting unit 54. In this case, the control device 70 may set the number of rotations calculated in accordance with the output of the second detecting unit 62 to the first number of rotations NA, and the number of rotations calculated in accordance with the output of the first detecting unit 54 as the second rotation. The number NB is used to perform the aforementioned switching process.

‧ The control unit 70 of each embodiment may be provided with a memory unit to which the control signal SA outputted by the motor control unit 82 is input, and the speed ratio γ may be detected based on the control signal SA stored in the memory unit.

‧ The transmission device 24 of each embodiment can also be changed to an electric external transmission. The electric external gearbox can also include: front exterior gearbox and rear exterior gearbox. Further, the shifting device 24 may be changed to be attached to the crankshaft 40. In short, any shifting device can be employed as the shifting device that can change the speed ratio γ by the control device 70.

10‧‧‧Bicycle

12‧‧‧ frame

12A‧‧‧ front fork

16A‧‧ spokes

22‧‧‧Transmission control device

24‧‧‧Transmission

26‧‧‧1st detection device

28‧‧‧2nd detection device

30‧‧‧Drive force sensor

40‧‧‧ crankshaft

42‧‧‧ crank arm

48‧‧‧Motor unit

50‧‧‧Transmission machine

52A, 52B‧‧‧ magnet

54‧‧‧1st detection department

56A, 56B‧‧‧ components

58‧‧‧1st rotation number calculation unit

60‧‧‧ Magnet

62‧‧‧2nd Inspection Department

64‧‧‧ components

66‧‧‧Speed calculation department

68‧‧‧Transmission status detection device

70‧‧‧Control device

72‧‧‧2nd rotation number calculation unit

74‧‧‧Rotation comparison department

76‧‧‧Drive Force Computing Department

78‧‧‧Selection value setting section

80‧‧‧Transmission Determination Department

82‧‧‧Motor Control Department

84‧‧‧Memory Department

S1‧‧‧1st signal

S2‧‧‧2nd signal

S3‧‧‧3rd signal

SA‧‧‧ control signal

Claims (27)

A control device for a bicycle shifter that is switchable to control a first control state of a transmission based on a first signal input from a first detecting unit that detects rotation of a crank, and a bicycle speed is reflected from the detection. The second signal input by the second detecting unit of the value controls the second control state of the transmission. The control device for a bicycle shifting machine according to the first aspect of the invention, wherein the second detecting unit detects rotation of a wheel of the bicycle. The control device for a bicycle shifting machine according to the first or second aspect of the invention, wherein the first control state and the second control state are switched based on the first signal and the second signal. The control device for a bicycle shifting machine according to the first or second aspect of the invention, wherein the first control is switched based on the first signal and the second signal, and a human driving force supplied to the crank State and the aforementioned second control state. The control device for a bicycle shifting machine according to the first or second aspect of the invention, wherein the first control state and the second control state are switched in accordance with a human driving force supplied to the crank. The control device for a bicycle shifting machine according to the third aspect of the invention, wherein the number of rotations of the crank according to the first signal is equal to or greater than a maximum number of rotations of the crank according to the second signal, based on the first signal The output is used to control the control signal of the aforementioned transmission. The control device for a bicycle shifting machine according to the third or sixth aspect of the invention, wherein the maximum number of rotations of the crank according to the second signal is greater than the first signal according to the first signal The number of rotations of the crank is outputted to control a control signal of the transmission based on the second signal. The control device for a bicycle shifting machine according to claim 4, wherein the maximum number of rotations of the crank according to the second signal is larger than the number of rotations of the crank according to the first signal, and the human driving force is If the specific value is not reached, the control signal for controlling the aforementioned transmission is output according to the second signal. The control device for a bicycle shifting machine according to the fourth or eighth aspect of the invention, wherein the maximum number of rotations of the crank according to the second signal is greater than the number of rotations of the crank according to the first signal, and the foregoing The human driving force is equal to or greater than a specific value, and the control signal for controlling the aforementioned transmission is output according to the first signal. The control device for a bicycle shifting machine according to the fifth aspect of the invention, wherein the manual driving force is a specific value or more, and a control signal for controlling the transmission is output based on the first signal. The control device for a bicycle shifting machine according to claim 5, wherein the control signal for controlling the transmission is output based on the second signal if the human driving force is not up to a specific value. The control device for a bicycle shifting machine according to any one of claims 4, 5, and 8 to 11, wherein the human driving force is based on being supplied to the crank The human driving force is obtained from the third signal to which the driving force sensor that outputs the third signal is input. The control device for a bicycle shifting machine according to any one of claims 1 to 12, wherein the first transmission is controlled by the first signal so as to be according to the first The number of rotations of the aforementioned crank of the signal is a specific number of crank rotations or a number of crank rotations in a specific range, and a control signal for controlling the aforementioned transmission is output. The control device for a bicycle shifting machine according to any one of claims 1 to 13, wherein when the transmission is controlled by the second signal, the maximum rotation of the crank according to the second signal is performed. The number is a specific number of crank rotations or a number of crank rotations within a specific range, and a control signal for controlling the aforementioned transmission is output. The control device for a bicycle shifting machine according to claim 14, wherein the maximum number of rotations of the crank according to the second signal is based on the second signal, the information on the gear ratio, and the wheel of the bicycle. Find the diameter, radius, or perimeter information. The control device for a bicycle shifting machine according to any one of claims 1 to 15, wherein, if an abnormality occurs in the first signal, the control for controlling the transmission is output based on the second signal. Signal. The control device for a bicycle shifting machine according to any one of claims 1 to 16, wherein, if an abnormality occurs in the second signal, the control for controlling the transmission is output based on the first signal. Signal. The control device for a bicycle shifting machine according to any one of claims 2 to 17, wherein the first detecting portion is capable of detecting a minimum of the crank-rotation The angle is smaller than the minimum angle at which the second detecting portion can detect the rotation of the wheel. The control device for a bicycle shifting machine according to any one of claims 1 to 18, wherein when the shifting machine is controlled based on the first signal, the crank is rotated When the number of revolutions is equal to or greater than the first upper limit value, the speed changer is operated to increase the speed ratio, and when the speed changer is controlled by the first signal, the number of rotations of the crank is equal to or less than the first lower limit value. When the speed changer is operated, the speed changer is operated, and when the speed changer is controlled based on the second signal, the maximum number of rotations of the crank corresponding to the second signal is equal to or higher than the second upper limit value. When the speed change ratio is increased, the speed changer is operated, and when the speed changer is controlled by the second signal, the maximum number of rotations of the crank corresponding to the second signal is equal to or less than the second lower limit value. The gearbox is operated in such a manner that the gear ratio becomes smaller. The control device for a bicycle shifting machine according to claim 19, wherein the second upper limit value is smaller than the first upper limit value. The control device for a bicycle shifting machine according to claim 19 or 20, wherein the second lower limit value is greater than the first lower limit value. The control device for a bicycle shifting machine according to any one of the items 19 to 21, wherein the range from the second upper limit to the second lower limit is the first upper limit 25 to 50% of the range of the first lower limit value. The control device for a bicycle shifting machine according to any one of the items 19 to 22, wherein the number of rotations of the crank becomes the first upper limit when the transmission is controlled based on the first signal When the number of rotations of the crank is less than the first upper limit and exceeds the first lower limit, the shifting is performed in the range from the time of the first lower limit or lower to the first standby period. The machine does not move, When the number of the maximum number of rotations of the crank is equal to or higher than the second upper limit value or lower than the second lower limit value, the crankshaft is controlled by the second signal, and the crank is generated during the second standby period. The number of rotations does not reach the second upper limit value and exceeds the second lower limit value, so that the transmission does not operate. The control device for a bicycle shifting machine according to claim 23, wherein the second waiting period is equal to or less than the first standby period. The control device for a bicycle shifting machine according to claim 23, wherein the first waiting period and the second waiting period are set according to a running load of the bicycle. The control device for a bicycle shifting machine according to claim 25, wherein the second standby period is equal to or less than the first standby period when the running load of the bicycle is included in the same range. The control device for a bicycle shifting machine according to claim 26, wherein the first waiting period and the second waiting period are set based on a previous shifting operation of the transmission and a running load of the bicycle. .