TWM505448U - Gearshift control system of bicycle - Google Patents

Description

Bicycle shift control system

The present invention relates to a shift control system for a bicycle.

A bicycle shift control system known in the related art includes a control unit that controls the first transmission and the second transmission based on a signal from the shift operating device. For example, in the shift control system of Patent Document 1, when the shift operating device is operated, the first transmission and the second transmission are controlled based on a combination of the speed stage of the first transmission and the speed stage of the second transmission stored in advance. At least one of them.

[prior technical literature] [Patent Document]

[Patent Document 1] U.S. Patent No. 8712656

According to the above control system, the first change is controlled according to the combination of the speed phase of the first transmission and the speed phase of the second transmission. At least one of the speed machine and the second speed changer. Therefore, even if the rider wishes to operate only one of the transmissions in accordance with the running state of the bicycle or the like, the demand cannot be satisfied.

The purpose of the present invention is to provide a bicycle shift control system that is more responsive to the needs of the rider.

[1] One aspect of the bicycle shift control system of the present invention includes: a first shift operating device, a first shifting device, and a second shifting gear; and a control unit configured to control from When the first shifting operation device inputs the first shifting signal, the shifting ratio of the bicycle is made one of a larger state and a smaller state, and the input from the first shift operating device is different from the first shifting signal. When the second shift signal or the third shift signal different from the first and second shift signals is used, the speed ratio of the bicycle is made larger and smaller than the current state; the control unit is When the speed ratio of the bicycle is a speed ratio different from the predetermined speed ratio and the first speed signal is input, only the first speed changer is operated, and the speed ratio of the bicycle is the predetermined speed ratio and the first speed signal is input. When both the first and second transmissions are operated or only the second transmission is operated, when the second transmission signal is input, only the first transmission is operated, and the above-mentioned first transmission is input. 3 when the shift signal, so that the first and second transmission unit or only the sides of the second transmission operation.

[2] A type of shift control system for the bicycle described above In the above aspect, when the speed ratio of the bicycle is the predetermined speed ratio and the third speed signal is input, both the first and second speed converters or only the second speed changer are operated, and the bicycle is operated. When the speed ratio is a speed ratio different from the predetermined speed ratio and the third speed signal is input, only the first speed changer is operated.

[3] In one aspect of the bicycle shift control system, the predetermined speed ratio includes a first predetermined speed ratio and a second predetermined speed ratio, and the control unit sets the speed ratio of the bicycle to the first predetermined When the first speed change signal is input and the first speed change signal is input, the first and second speed changers are operated or only the second speed changer is operated, and the speed ratio of the bicycle is the second predetermined speed ratio and the third speed is input. At the time of the shift signal, both the first and second shifters or only the second shifter are operated.

[4] In one aspect of the bicycle shift control system, the control unit controls at least one of the first and second transmissions to shift the bicycle when the first shift signal is input. When the second or third shift signal is input, the shift ratio of the bicycle is made larger than the current state.

[5] In one aspect of the above-described bicycle shift control system, the first shift operating device includes: a first shift operating member and a second shift operating member; and the control portion for the second shift operating member When the first shifting operation is input, the first shifting signal is received, and when the first shifting operation is input to the first shifting operating member, the upper shifting operation is accepted. The second shift signal receives the third shift signal when the second shift operation is input to the first shift operating member.

[6] In one aspect of the above-described shift control system for a bicycle, the first shifting operation operates the first one in a range of a first operation amount or more and a second operation amount larger than the first operation amount. At least one of the second shift operating members is operated by at least one of the first and second shift operating members in a range of the second operation amount or more in the second shifting operation.

[7] In one aspect of the bicycle shift control system, at least one of the first and second shift operating members is operated in a first direction in the first shifting operation, and the second shifting operation is performed At least one of the first and second shift operating members is operated in a second direction different from the first direction.

[8] According to one aspect of the above-described bicycle shift control system, the control unit controls the first and second transmissions to change the speed ratio of the bicycle to be higher when the first shift signal is input. In a larger state, when the second or third shift signal is input, the speed ratio of the bicycle is made smaller than the present.

[9] In one aspect of the above-described bicycle shift control system, the first shift operating device includes: a first shift operating member and a second shift operating member; and the control unit is configured to the first shift operating device When the first shifting operation member inputs the first shifting operation, the first shifting signal is received, and when the first shifting operation is input to the second shifting operating member of the first shifting operating device, the second shifting is received. The signal receives the third shift signal when the second shifting operation is input to the second shift operating member.

[10] In one aspect of the above-described shift control system for a bicycle, the first shifting operation is performed in a range of a first operation amount or more and a second operation amount larger than the first operation amount, and the first operation is performed. At least one of the second shift operating members is operated by at least one of the first and second shift operating members in a range of the second operation amount or more in the second shifting operation.

[11] In one aspect of the bicycle shift control system, at least one of the first and second shift operating members is operated in a first direction in the first shifting operation, and the second shifting operation is performed At least one of the first and second shift operating members is operated in a second direction different from the first direction.

[12] In one aspect of the bicycle shift control system, the control unit inputs the first and second shifting machines or the second shifting machine only after inputting the first shifting signal In the third shift signal, the third shift signal is ignored.

[13] In one aspect of the bicycle shift control system, the control unit inputs the first and second transmissions or the second transmission only after inputting the first transmission signal. In the case of the third shift signal, the second shift signal is considered to be accepted.

[14] In one aspect of the bicycle shift control system, the control unit operates only the second transmission when the shift signal is input from the second shift operating device.

[15] In one aspect of the bicycle shift control system, at least one of the first and second transmissions changes the speed ratio of the bicycle stepwise.

[16] In one aspect of the bicycle shift control system, the first transmission is a rear derailleur, and the second transmission is a front derailleur.

[17] According to one aspect of the bicycle shift control system, the shift ratio of the bicycle is defined by a combination of the speed phase of the first transmission and the speed phase of the second transmission.

The above-mentioned bicycle shift control system can more respond to the needs of the rider.

10‧‧‧Bicycle

22‧‧‧1st gearbox

24‧‧‧2nd speed changer

28‧‧‧1st shift operating device

64‧‧‧1st shifting operating member

66‧‧‧2nd shifting operating member

30‧‧‧2nd shift operating device

80‧‧‧Transmission Control System

84‧‧‧Control Department

Fig. 1 is a side view of a bicycle on which a shift control system for a bicycle according to an embodiment is mounted.

Fig. 2 is a perspective view of the first shift operating device and the second shift operating device mounted on the bicycle of Fig. 1.

Fig. 3 is a schematic view showing the operation of the first shift operating device of Fig. 2;

Fig. 4 is a block diagram of the shift control system of Fig. 1.

Fig. 5 is a graph showing the shifting sequence of the memory storage in Fig. 4.

Fig. 6 is a graph showing the shifting order of the memory storage in the first modification.

Fig. 7 is a graph showing the shifting order of the memory storage in the second modification.

Fig. 8 is a schematic view showing the operation of the first shift operating device according to the third modification.

Fig. 9 is a flowchart showing a shift process executed by the shift control system of the fourth modification.

Fig. 10 is a flowchart showing a shifting process executed by the shift control system of the fourth modification.

The structure of the bicycle 10 equipped with the bicycle shift control system will be described with reference to Fig. 1 .

The bicycle 10 is equipped with a frame 12, a handlebar 14, a front wheel 16, a rear wheel 18, a drive mechanism 20, a first transmission 22, a second transmission 24, a display device 26, a first shift operating device 28, and a second shifting speed. The operation device 30 (refer to Fig. 2), the battery 32, and the shift control system 80 (refer to Fig. 4).

The drive mechanism 20 includes left and right crank arms 34, crankshafts 36, left and right pedals 38, left and right pedal shafts 40, a chain 42, a plurality of front sprockets 44, and a plurality of rear sprockets 46. The left and right crank arms 34 are attached to both end portions of the crankshaft 36, and are rotatably attached to the frame 12 via the crankshaft 36. a pedal 38 rotatably mounted about the pedal shaft 40 Crank arm 34.

The plurality of front sprockets 44 have different numbers of teeth, respectively. The number of front sprockets 44 is, for example, three. The plurality of front sprockets 44 are superposed on each other in the order of the number of teeth and are coupled to the crankshaft 36.

The plurality of rear sprockets 46 have different numbers of teeth, respectively. The number of rear sprockets 46 is, for example, eleven. The plurality of rear sprockets 46 are overlapped in the order of the number of teeth and are mounted to be rotatable about the axle 18A of the rear wheel 18.

The chain 42 is wound around the front sprocket 44 and the rear sprocket 46. When the crank arm 34 is rotated by the human driving force applied to the pedal 38, the rear wheel 18 is rotated by the front sprocket 44, the chain 42, and the rear sprocket 46.

The first transmission 22 is a rear derailleur attached to the rear end portion 12A of the frame 12. The first transmission 22 changes the speed ratio γ of the bicycle 10 stepwise by switching the chain 42 from one of the plurality of rear sprockets 46 to the other. The first transmission 22 is electrically connected to the control unit 82 via a cable C.

As shown in FIG. 4, the first transmission 22 includes a control unit 48, a driver 50, a motor 52, and a rotation angle sensor 54. The control unit 48 supplies power to the motor 52 via the driver 50. The control unit 48 controls the electric power supplied from the driver 50 to the motor 52 in accordance with the output of the rotation angle sensor 54. By the driving of the motor 52, the rear sprocket 46 that wraps around the chain 42 shown in Fig. 1 is changed to change the gear ratio γ. The speed phase of the first transmission 22 is determined by the number of teeth of the rear sprocket 46 around which the chain 42 is hung. The smaller the number of teeth of the rear sprocket 46, the larger the speed phase of the first transmission 22.

The second transmission 24 is a front derailleur that is attached to the frame 12 in the vicinity of the crankshaft 36. The second transmission 24 changes the speed ratio γ of the bicycle 10 stepwise by switching the chain 42 from one of the plurality of front sprockets 44 to the other. The second transmission 24 is electrically connected to the control unit 82 via a cable C.

As shown in FIG. 4, the second transmission 24 includes a control unit 56, a driver 58, a motor 60, and a rotation angle sensor 62. Control unit 56 supplies power to motor 60 via driver 58. The control unit 56 controls the electric power supplied from the driver 58 to the motor 60 in accordance with the output of the rotation angle sensor 62. By the driving of the motor 52, the front sprocket 44 of the chain 42 shown in Fig. 1 is wound to change the gear ratio γ. The speed phase of the second transmission 24 is determined by the number of teeth of the front sprocket 44 around which the chain 42 is hung. The larger the number of teeth of the front sprocket 44, the larger the speed phase of the second transmission 24.

The display device 26 presents various information to the rider. The various information is, for example, the current speed stage of the first transmission 22 and the current speed stage of the second transmission 24. The display device 26 is electrically connected to the control unit 82 by a cable C.

As shown in Fig. 2, the first shift operating device 28 is attached to the handlebar lever 14 on the right side. The first shift operating device 28 includes a first shift operating member 64 and a second shift operating member 66. The first shift operating device 28 is electrically connected to the control unit 82 via a cable C. The first shift operating device 28 outputs a signal for operating the first transmission 22 and the second transmission 24 to the control unit 82 (refer to Fig. 4).

The first shift operating member 64 is a lever. As shown in FIG. 3, the first shift operating member 64 can be moved from the reference position PA to the maximum position PC via the intermediate position PB. The first shift operating member 64 applies a force toward the reference position PA side by a biasing member (not shown). Therefore, when the rider does not apply force to the first shift operating member 64, the position of the first shift operating member 64 is maintained at the reference position PA.

When the first shift operating member 64 is located at the reference position PA, the rider operates the first shift operating member 64 in a range of the first operation amount MA or more and less than the second operation amount MB larger than the first operation amount MA. In the first shifting operation, the first shift operating member 64 moves from the reference position PA toward the intermediate position PB. When the first shift operating member 64 is located at the reference position PA, when the rider performs the second shifting operation of the first shift operating member 64 in the range of the second operation amount MB or more, the first shift operating member 64 is from the reference position. The PA moves toward the maximum position PC through the intermediate position PB.

As shown in Fig. 2, the second shift operating member 66 is a lever. The second shift operating member 66 performs the same operation as the first shift operating member 64 shown in FIG. 3 .

When the second shift operating member 66 is at the reference position PA, when the rider performs the first shifting operation on the second shift operating member 66, the second shift operating member 66 moves from the reference position PA toward the intermediate position PB.

When the first shift operating device 28 performs the first shifting operation on the second shift operating member 66, the first switch SW1 is activated, and the first shift signal SA is output to the control unit 82. 1st When the first shifting operation is performed on the first shift operating member 64, the shift operating device 28 activates the second switch SW2 and outputs the second shift signal SB to the control unit 82. When the first shift operating device 28 performs the second shifting operation on the first shift operating member 64, the second switch SW2 and the third switch SW3 are activated, and when the first shift operating member 64 is subjected to the second shifting operation, The third shift signal SC is output to the control unit 82.

As shown in Fig. 2, the second shift operating device 30 is attached to the handlebar lever 14 on the left side. The second shift operating device 30 includes a first shift operating member 68 and a second shift operating member 70. The second shift operating device 30 is electrically connected to the control unit 82 via a cable C. The second shift operating device 30 outputs a signal for operating the second transmission 24 to the control unit 82 (refer to FIG. 4).

The first shift operating member 68 has a shape that is bilaterally symmetrical with the first shift operating member 64. The first shift operating member 68 performs the same operation as the first shift operating member 64 shown in FIG. 3 . The second shift operating member 70 has a shape that is bilaterally symmetrical with the second shift operating member 66. The second shift operating member 70 performs the same operation as that of the second shift operating member 66.

When the second shift operating device 30 performs the first shifting operation on the second shift operating member 70, the first switch SW1 is activated, and the fourth shift signal SD is output to the control unit 82. When the first shift operating device 68 performs the first shifting operation on the first shift operating member 68, the second switch SW2 is activated, and the fifth shift signal SE is output to the control unit 82.

Battery 32 contains one or more battery cells. The battery 32 is a secondary battery. The battery 32 is electrically connected to the control unit 82 by a cable C. The battery 32 supplies electric power to the first transmission 22, the second transmission 24, the first shift operating device 28, the second shift operating device 30, and the control unit 82 via the cable C.

The shift control system 80 is provided with a control unit 82. The control unit 82 is provided with a control unit 84. The control unit 84 includes a processor 86 that performs various calculations and a memory 88 that stores various kinds of information.

The memory 88 stores the shifting sequence indicated by the arrows AX and AY in Fig. 5 . The shift sequence is in the order of the gear ratio γ of the bicycle 10 shown in Fig. 1 . The gear ratio γ of the bicycle 10 is defined by a combination of the speed phase of the first transmission 22 and the speed phase of the second transmission 24, so that the shift sequence is stored as the speed phase of the first transmission 22 and the second transmission. A combination of 24 speed stages. The control unit 82 shown in Fig. 4 is connected to an external device (not shown) via the port 82A. The external device can be changed to the shift operating device of the handlebar lever 14 attached to the left side as the first shift operating device 28 by the setting of the change control unit 82, and the shifting operation of the handlebar lever 14 attached to the right side can be changed. The device is regarded as the second shift operating device 30.

The control unit 84 receives the first shift signal SA when the first shift operation is input to the second shift operating member 66. The control unit 84 receives the second shift signal SB when the first shift operation is input to the first shift operating member 64. The control unit 84 receives the third shift signal SC when the second shift operation is input to the first shift operating member 64.

The control unit 84 controls at least one of the first transmission 22 and the second transmission 24 based on the shift signals SA to SC input from the first shift operating device 28. The control unit 84 controls the second transmission 24 based on the shift signals SD and SE input from the second shift operating device 30.

When the first shifting signal SA is input from the first shift operating device 28, the control unit 84 controls the first transmission 22 and the second transmission 24 to at least change the speed ratio γ of the bicycle 10 to a smaller state than the present. One party. Specifically, the control unit 84 reads the speed phase of the current first transmission 22 and the speed phase of the second transmission 24 so that the arrow AX of FIG. 5 becomes the first transmission 22 shown below. At least one of the first transmission 22 and the second transmission 24 is controlled in a speed phase and a speed phase of the second transmission 24. When the speed ratio γ of the bicycle 10 is the speed ratio γ different from the predetermined first speed ratio γ1 and the first speed signal SA is input, the control unit 84 operates only the first speed change unit 22 . When the speed ratio γ of the bicycle 10 is the predetermined first speed ratio γ1 and the first speed signal SA is input, the control unit 84 operates the first speed changer 22 toward the speed stage and the second speed changer. 24 moves toward the speed phase and becomes smaller. When the combination of the speed phase of the first first transmission 22 and the speed phase of the second transmission 24 is not on the arrow AX, the control unit 84 controls the speed of the first transmission 22 to be reduced by one step. The first transmission 22 is provided.

When the second shift signal SB is input from the first shift operating device 28, the control unit 84 controls the first transmission 22 so that the speed ratio γ of the bicycle 10 becomes larger than the present. In other words, let the first The speed stage of the transmission 22 is controlled in a one-stage manner to control the first transmission 22.

When the third shift signal SC is input from the first shift operating device 28, the control unit 84 controls the first transmission 22 and the second transmission 24 to at least change the speed ratio γ of the bicycle 10 to a larger state than the present. One party. Specifically, the control unit 84 reads the speed phase of the current first transmission 22 and the speed phase of the second transmission 24 so that the arrow AY of FIG. 5 becomes the first transmission 22 shown below. At least one of the first transmission 22 and the second transmission 24 is controlled in a speed phase and a speed phase of the second transmission 24. When the speed ratio γ of the bicycle 10 is the speed ratio γ different from the predetermined second speed ratio γ2 and the third speed signal SC is input, the control unit 84 operates only the first speed change unit 22 . When the speed ratio γ of the bicycle 10 is the predetermined second speed ratio γ2 and the third speed signal SC is input, the control unit 84 operates the first speed changer 22 toward the speed stage and the second speed changer. 24 moves toward the side of the speed phase. When the combination of the speed phase of the first first transmission 22 and the speed phase of the second transmission 24 is not in the arrow AY, the control unit 84 controls the speed of the first transmission 22 to be increased by one step. The first transmission 22 is provided.

When the fourth shift signal SD is input from the second shift operating device 30, the control unit 84 controls the second transmission 24 such that the speed ratio γ of the bicycle 10 becomes smaller than the present. That is, the second transmission 24 is controlled such that the speed stage of the second transmission 24 is made smaller by one stage.

When the fifth shift signal SE is input from the second shift operating device 30, the control unit 84 controls the second transmission 24 so that the speed ratio γ of the bicycle 10 becomes larger than the present. That is, the second transmission 24 is controlled such that the speed phase of the second transmission 24 is made larger by one step.

The effect of the shift control system 80 will be described.

(1) When the first shift signal SA for reducing the speed ratio γ is input, the control unit 84 operates the first transmission 22 and the second transmission 24 in accordance with a predetermined shift sequence. On the other hand, when the second shift signal SB for increasing the speed ratio γ is input, the control unit 84 operates the first transmission 22, and inputs the third shift signal SC for increasing the speed ratio γ. At this time, the first transmission 22 and the second transmission 24 are operated in accordance with a predetermined shift sequence. In other words, when the rider increases the speed ratio γ, the rider can select either a change in the speed ratio γ based on a predetermined shift order or a speed ratio in which the speed of the first transmission 22 is changed stepwise. Any of the changes in γ. Therefore, it can respond more to the needs of the rider.

(2) The shift control system 80 performs the second shift signal SB and the third shift signal SC which are output in accordance with the operation amount M of the first shift operating member 64 of the first shift operating device 28 in accordance with a predetermined shift sequence. The change of the gear ratio γ or the change of the gear ratio γ in which the speed phase of the first transmission 22 is changed stepwise is performed. That is, the second shift signal SB and the third shift signal SC can be output by the operation of one shift operating member 64, and the second shift signal SB can be The third shift signal SC improves the rider's convenience in comparison with the configuration of the operation output of the respective operating members.

The specific type of the shift control system or the like is not limited to the one exemplified in the above embodiment. The shift control system or the like can take various types different from the above embodiment. The modification of the above embodiment shown below is an example of various types of the shift control system and the like.

The shift sequence stored in advance in the memory 88 may be changed to the shift sequence shown in Fig. 6. In the shifting sequence shown in Fig. 6, when the first shifting signal SA is input to the first predetermined shifting ratio γ1, only the second shifting machine 24 is operated. When the third shift signal SC is input to the second predetermined speed ratio γ2, only the second speed change machine 24 is operated.

The speed stage of the second transmission 24 is two stages, and the shift order stored in advance in the memory 88 may be changed to the shift order shown in FIG.

The shift order stored in advance in the memory 88 may be changed to an order other than the speed ratio γ.

When the shift ratio γ is decreased, the shift control system 80 can selectively select a change in the shift ratio γ based on a predetermined shift sequence or a change in the shift ratio γ in which the speed of the first transmission 22 is changed stepwise. Any one.

Specifically, when the first shift operating device 64 performs the first shifting operation on the first shift operating member 64, the first shifting signal TA is output to the control unit 82. When the first shift operating device 28 performs the first shifting operation on the second shift operating member 66, the second shifting signal is applied. The TB is output to the control unit 82. The first shift operating device 28 outputs the third shift signal TC to the control unit 82 when the second shift operating member 66 performs the second shifting operation.

In the first operation, when the shift operating members 64 and 66 are located at the reference position PA, the shift operating members 64 and 66 are operated within a range of the first operation amount MA or more and less than the second operation amount MB. In the second shifting operation, when the shift operating members 64 and 66 are positioned at the reference position PA, the shift operating members 64 and 66 are operated in the range of the second operation amount MB or more.

The control unit 84 receives the first shift signal TA when the first shift operation is input to the first shift operating member 64. The control unit 84 receives the second shift signal TB when the first shift operation is input to the second shift operating member 66. The control unit 84 receives the third shift signal TC when the second shift operation is input to the second shift operating member 66.

When the first shift signal TA is input from the first shift operating device 28, the control unit 84 controls the first transmission 22 and the second transmission 24 to at least change the speed ratio γ of the bicycle 10 to a larger state than the present. One party. When the second shift signal TB is input from the first shift operating device 28, the control unit 84 controls the first transmission 22 such that the speed ratio γ of the bicycle 10 becomes smaller than the present. When the third shift signal TC is input from the first shift operating device 28, the control unit 84 controls the first transmission 22 and the second transmission 24 to at least change the speed ratio γ of the bicycle 10 to a smaller state than now. One party.

The first shift operating member 64 may be changed to the reference position. Set the PA action to the intermediate position PB. In this case, when the operation amount of the first shift operating member 64, that is, the operation time is less than the predetermined time, the first operation is performed, and the second shift signal SB is output. When the operation amount of the first shift operating member 64, that is, the operation time is equal to or longer than the predetermined time, the second operation is performed, and the third shift signal SC is output.

The first shift operating member 64 may be changed as shown in Fig. 8. The first shift operating member 64 is movable from the reference position PA in the first direction RA and in the second direction RB different from the first direction RA. The first shift operating member 64 applies a force toward the reference position PA side by a biasing member (not shown). Therefore, when the rider does not apply force to the first shift operating member 64, the position of the first shift operating member 64 is maintained at the reference position PA. When the rider performs the first shifting operation of operating the first shift operating member 64 in the first direction RA when the first shift operating member 64 is at the reference position PA, the first shift operating device 28 sets the second shift signal. The SB is output to the control unit 82. When the rider performs the second shifting operation of operating the first shift operating member 64 in the second direction RB when the first shift operating member 64 is at the reference position PA, the first shift operating device 28 sets the third shift signal. The SC is output to the control unit 82. The second shift operating member 66 can be changed in the same manner as the first shift operating member 64 shown in Fig. 8 .

The first shift operating member 64 and the second shift operating member 66 may be constituted by one lever. In this case, the shift operating member can be moved from the reference position PA to the first direction RC and to the second direction RD that is different from the first direction RC. When the rider is performing the shifting operation member toward the first In the first shifting operation in the direction RC operation, the first shift operating device 28 outputs the first shift signal SA to the control unit 82. When the rider performs the first shifting operation for maintaining the shift operating member in the second direction RD for less than the predetermined time, the first shift operating device 28 outputs the second shift signal SB to the control unit 82. When the rider performs the second shift operation for maintaining the first shift operating member in the second direction RD for a predetermined time or longer, the first shift operating device 28 outputs the third shift signal SC to the control unit 82.

The operation members 64 and 66 may be changed to three buttons corresponding to the respective switches SW1 to SW3. In this case, when the button corresponding to the first switch SW1 is pressed, the first shift signal SA is output. In this case, when the button corresponding to the second switch SW2 is pressed, the second shift signal SB is output. In this case, when the button corresponding to the third switch SW3 is pressed, the third shift signal SC is output.

The switch SW3 can also be omitted. In this case, for example, the first shift operating device 28 outputs the second shift signal SB when the switch SW2 is pressed once for a predetermined time, and outputs the third shift signal SC when the switch SW2 is pressed twice or more for a predetermined time.

The first shift operating device 28 may be divided into a right side portion of the handlebar lever 14 attached to the right side and a left side portion of the handlebar lever 14 attached to the left side, and a first shift operating member 64 and a second portion provided on the right side portion. One of the shift operating members 66 is provided with the other of the first shift operating member 64 and the second shift operating member 66 on the left side portion.

The shift sequence shown in FIG. 7 is stored in the memory 88. The control unit 84 can perform the processing shown in Fig. 9 when the third shift signal SC is input. When it is determined in step S11 that the third shift signal SC is input, the control unit 84 determines the first shifting machine 22 in a predetermined period in step S12, that is, before a predetermined period of time at which the third shift signal SC is input. Whether or not the second transmission 24 operates. When the first transmission 22 and the second transmission 24 are both operated for a predetermined period of time, the control unit 84 ignores the third transmission signal SC and does not perform the control of the first transmission 22 and the second transmission 24. On the other hand, when it is determined that the first transmission 22 and the second transmission 24 are not operating for a predetermined period of time, the control unit 84 causes the first transmission 22 and the second transmission 24 to follow the shift sequence in step S13. action. In this modification, after both the first transmission 22 and the second transmission 24 are operated, the first transmission 22 and the second transmission 24 are not operated, so that the burden on the rider's feet can be reduced.

The shifting sequence shown in Fig. 7 is stored in the control unit 84 of the memory 88, and when the third shift signal SC is input, the processing shown in Fig. 10 can be performed. When it is determined in step S21 that the third shift signal SC is input, the control unit 84 determines the first shifting machine 22 in step S22 for a predetermined period, that is, before the timing at which the third shift signal SC is input. Whether or not the second transmission 24 operates. When the first transmission 22 and the second transmission 24 are both operated for a predetermined period of time, the control unit 84 regards that the second transmission signal SB is received, and the first transmission 22 is operated in step S23. On the other hand, when it is determined in step S22 that the first transmission 22 and the second transmission 24 are not operating for a predetermined period of time, the control unit 84 causes the first transmission 22 and the second transmission 24 to operate in step S24. according to The shifting sequence operates. In this modification, after both the first transmission 22 and the second transmission 24 are operated, the first transmission 22 and the second transmission 24 are not operated, so that the burden on the rider's feet can be reduced.

The predetermined gear ratio may be regarded as the entire gear ratio γ corresponding to the maximum speed phase and the minimum speed phase of the second transmission 24 . In this case, when the second transmission 24 inputs the third shift signal SC to the control unit 84 in the maximum speed phase and the minimum speed phase, the control unit 84 causes both the first transmission 22 and the second transmission 24 to be either The second transmission 24 is operated. On the other hand, when the second transmission 24 inputs the third shift signal SC to the control unit 84 at the intermediate speed stage, the control unit 84 operates only the first transmission 22 . In this modification, the second transmission 24 reduces the chance of the second transmission 24 moving to the maximum speed stage and the minimum speed stage at the intermediate speed stage. Therefore, the intermediate speed phase of the second transmission 24 can be used efficiently.

Although the device constituting the shift control system 80 is wired by the cable C, electric power is supplied from the battery 32, and at least one of the devices may be provided with a built-in power source. In this case, the device having the built-in power supply may be provided with a wireless communication unit, and can perform wireless communication with other devices.

At least one of the first transmission 22 and the second transmission 24 may be changed to a transmission or a stepless transmission including a planetary gear mechanism. The first transmission 22 may be changed to a transmission that changes the speed ratio γ between the crankshaft 36 and the chain 42. The second transmission 24 may be changed to a transmission that changes the speed ratio γ between the chain 42 and the rear wheel 18. change The speed control system 80 can be used in any bicycle as long as it has a bicycle having two transmissions.

10‧‧‧Bicycle

22‧‧‧1st gearbox

24‧‧‧2nd speed changer

26‧‧‧Display device

28‧‧‧1st shift operating device

30‧‧‧2nd shift operating device

32‧‧‧Battery

48‧‧‧Control unit

50‧‧‧ drive

52‧‧‧Motor

54‧‧‧Rotary angle sensor

56‧‧‧Control unit

58‧‧‧ drive

60‧‧‧ motor

62‧‧‧Rotation angle sensor

64‧‧‧1st shifting operating member

66‧‧‧2nd shifting operating member

68‧‧‧1st shifting operating member

70‧‧‧2nd shifting operating member

80‧‧‧Transmission Control System

82‧‧‧Control unit

82A‧‧‧ mouth

84‧‧‧Control Department

86‧‧‧Processor

88‧‧‧ memory

SA‧‧‧1st speed signal

SB‧‧‧2nd transmission signal

SC‧‧‧3rd transmission signal

SD‧‧‧4th transmission signal

SE‧‧‧5th variable speed signal

SW1~3‧‧‧1~3 switch

Claims (17)

A shift control system for a bicycle includes: a first shift operating device, a first shifting gear, and a second shifting gear; the shift control system of the bicycle includes a control unit that controls the shifting from the first shift When the operation device inputs the first shift signal, the shift ratio of the bicycle is made one of a larger state and a smaller state, and the second shifting device is input with the second shift from the first shifting signal. When the shift signal or the third shift signal different from the first and second shift signals is different, the shift ratio of the bicycle is made to be larger and smaller than the current state; and the control unit is When the speed ratio is a speed ratio different from the predetermined speed ratio and the first speed signal is input, only the first speed changer is operated, and when the speed ratio of the bicycle is the predetermined speed ratio and the first speed signal is input, When both the first and second transmissions are operated or only the second transmission is operated, when the second transmission signal is input, only the first transmission is operated, and the input is performed. In the case of the third shift signal, both the first and second shifters or only the second shifter are operated. The bicycle shift control system according to claim 1, wherein the control unit causes the first and second shifters to be both when the shift ratio of the bicycle is the predetermined shift ratio and the third shift signal is input. Just make it In the second transmission operation, when the speed ratio of the bicycle is a speed ratio different from the predetermined speed ratio and the third speed signal is input, only the first speed changer is operated. The bicycle shift control system according to claim 2, wherein the predetermined speed ratio includes a first predetermined speed ratio and a second predetermined speed ratio, and wherein the control unit sets the speed ratio of the bicycle to the first predetermined shift speed When the first shift signal is input, the first and second shifters are operated or only the second shifter is operated, and the shift ratio of the bicycle is the second predetermined shift ratio and the third shift is input. At the time of the signal, both the first and second transmissions are operated or only the second transmission is operated. The bicycle shift control system according to claim 1, wherein the control unit controls at least one of the first and second transmissions to: when the first shift signal is input, to cause a speed ratio of the bicycle When the second or third shift signal is input, the speed ratio of the bicycle is made larger than the current state. The bicycle shift control system according to the fourth aspect of the invention, wherein the first shift operating device includes: a first shift operating member and a second shift operating member; and the control unit inputs the second shift operating member During the first shifting operation, When the first shifting operation is input to the first shifting operation member, the second shifting signal is received by the first shifting signal, and when the second shifting operation is input to the first shifting operating member, the third shifting signal is received. . The bicycle shift control system according to claim 5, wherein the first shifting operation is performed in a range of a first operation amount or more and a second operation amount larger than the first operation amount, and operating the first and At least one of the second shift operating members is configured to operate at least one of the first and second shift operating members in a range of the second operation amount or more in the second shifting operation. The bicycle shift control system according to claim 5, wherein the first shifting operation operates at least one of the first and second shift operating members in a first direction, and the second shifting operation is directed to the first At least one of the first and second shift operating members is operated in a second direction different in one direction. The bicycle shift control system according to claim 1, wherein the control unit controls the first and second transmissions to change a speed ratio of the bicycle to be higher than now when the first shift signal is input. In the large state, when the second or third shift signal is input, the speed ratio of the bicycle described above is made smaller. The bicycle shift control system according to the eighth aspect of the invention, wherein the first shift operating device includes: a first shift operating member and a second shift operating member; The control unit receives the first shift signal when the first shift operation is input to the first shift operating member of the first shift operating device, and inputs the first shift signal to the second shift operating member of the first shift operating device. In the shifting operation, the second shift signal is received, and when the second shifting operation is input to the second shift operating member, the third shift signal is received. The bicycle shift control system according to claim 9, wherein the first shifting operation is performed in a range of a first operation amount or more and a second operation amount larger than the first operation amount, and operating the first and At least one of the second shift operating members is configured to operate at least one of the first and second shift operating members in a range of the second operation amount or more in the second shifting operation. The bicycle shift control system according to claim 9, wherein the first shifting operation operates at least one of the first and second shift operating members in a first direction, and the second shifting operation is directed to the first At least one of the first and second shift operating members is operated in a second direction different in one direction. The bicycle shift control system according to claim 1, wherein the control unit inputs the first and second transmissions or the second transmission only after inputting the first shift signal; When the 3 speed signal is used, the third speed signal is ignored. The shift control system for a bicycle according to claim 1, wherein the control unit, When the first shifting signal is input and both the first and second shifting machines are operated or the second shifting machine is operated, the third shifting signal is received. The bicycle shift control system according to claim 1, wherein the control unit operates only the second transmission when the shift signal is input from the second shift operating device. In the bicycle shift control system according to claim 1, wherein at least one of the first and second transmissions changes the speed ratio of the bicycle stepwise. A bicycle shift control system according to claim 1, wherein the first transmission is a rear derailleur, and the second transmission is a front derailleur. A bicycle shift control system according to claim 1, wherein the shift ratio of the bicycle is defined by a combination of a speed phase of the first transmission and a speed phase of the second transmission.