Vehicle

Abstract

To provide a safe vehicle capable of operating in a plurality of modes.SOLUTION: A vehicle according to an aspect of the present disclosure includes: a wheel; a speed sensor configured to detect a speed; a motor configured to generate power for applying a propulsive force to the wheel; a control unit configured to control the power generated by the motor; a torque sensor configured to detect a pedaling force applied to a pedal connected to a crank; and an accelerator operation unit configured to be operated by a rider. The vehicle is capable of traveling in a first mode, and at least one of a second mode and a third mode. In the first mode, the control unit adjusts the power generated by the motor, according to the speed and an input of the accelerator operation unit. In the second mode, the control unit adjusts the power generated by the motor, according to the speed and the pedaling force detected by the torque sensor. In the third mode, the wheel is driven by the propulsive force given by the occupant. In the first mode, the power generated by the motor is limited so that the speed detected by the speed sensor does not exceed a predetermined speed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] One aspect of the present invention relates to a vehicle that is powered by a motor and can operate in a plurality of modes.

Background Art

[0002] Today, a so-called electric assist bicycle is known, in which the main driving force from a person's pedaling force on a pedal is detected by a torque sensor or the like, and an auxiliary driving force corresponding to this main driving force is generated by a hub motor (in-wheel motor) or a motor unit near the crank, and the auxiliary driving force is added to the main driving force to generate a propulsive force. Also, an electric bicycle that generates a propulsive force by the power generated by a motor is technically known, but it is not widely distributed in Japan. For example, Patent Document 1 discloses a control device for a human-powered vehicle that operates in a plurality of modes.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] On the other hand, in recent years, so-called electric kick scooters have begun to circulate as specific small engine-equipped bicycles. However, specific small engine-equipped bicycles are not necessarily limited to electric kick scooters, and there is a possibility that they will be applied to bicycles, which are saddle-riding vehicles, in the future. However, there has been little consideration of vehicles that can run as both electric assist bicycles and specific small engine-equipped bicycles, and there is a need for consideration of the control of such vehicles.

Means for Solving the Problems

[0005] A vehicle according to one aspect of the present invention includes wheels and, a speed sensor that detects speed, A motor that generates power to apply a driving force to the wheel, A control unit that controls the power generated by the motor, A torque sensor that detects the pedaling force applied to a pedal connected to a crank, An accelerator operation unit operated by an occupant, and includes: A first mode in which the wheel is driven only by the driving force provided by the motor, and at least one of a second mode in which the wheel is driven by the driving force provided by the motor in addition to the driving force provided by the occupant and a third mode in which the wheel is driven by the driving force provided by the occupant, and is capable of traveling in In the first mode, the control unit adjusts the power generated by the motor according to the speed detected by the speed sensor and the input of the accelerator operation unit. In the second mode, the control unit adjusts the power generated by the motor according to the speed detected by the speed sensor and the pedaling force detected by the torque sensor. In the first mode, the control unit limits the power generated by the motor so that the speed detected by the speed sensor does not exceed a predetermined speed. A vehicle.

[0006] According to the vehicle having the above configuration, in the first mode of adjusting the power generated by the motor according to the input of the accelerator operation unit, it is possible to adopt a configuration that can control the traveling speed so as not to exceed a predetermined speed. Thereby, for example, in a vehicle that can operate as an electric assist bicycle and a bicycle with a specific small prime mover, it is possible to prevent traveling at a speed exceeding a safe speed during operation as a bicycle with a specific small prime mover.

[0007] Preferably, in the above vehicle, the control unit does not perform control so that the speed detected by the speed sensor does not exceed the predetermined speed.

[0008] According to the vehicle with the above configuration, in the second mode, it is possible to configure so that the speed limit in the first mode does not occur. Thereby, for example, in a vehicle that can operate as an electric assist bicycle and a bicycle with a specific small prime mover, during operation as an electric assist bicycle, control different from that during operation as a bicycle with a specific small prime mover becomes possible.

[0009] In the above vehicle, preferably, in the first mode, the control unit makes it a state where no driving force is applied from the occupant.

[0010] According to the vehicle with the above configuration, for example, in a vehicle that can operate as an electric assist bicycle and a bicycle with a specific small prime mover, during operation as a bicycle with a specific small prime mover, it is possible to configure so that even if the occupant pedals, the driving force is not transmitted.

[0011] In the above vehicle, preferably, the accelerator operation unit is the torque sensor, in the first mode, the control unit controls to suppress the rotation of the crank.

[0012] According to the vehicle with the above configuration, for example, in a vehicle that can operate as an electric assist bicycle and a bicycle with a specific small prime mover, during operation as a bicycle with a specific small prime mover, it is possible to configure to suppress the rotation of the crank so that even if the occupant pedals, the pedaling force is not transmitted. At this time, since the rotation of the crank is suppressed, it is easier for the occupant to recognize that the vehicle is operating as a bicycle with a specific small prime mover. Also, a configuration in which the pedaling force of the occupant is not transmitted as the power of the vehicle can be realized with a relatively simple configuration.

[0013] In the above vehicle, preferably, the accelerator operation unit is a manual operation unit manually operated by the occupant, the crank is connected to a power transmission member connected to the wheel, in the first mode, the control unit releases the connection between the crank and the power transmission member.

[0014] According to the vehicle with the above configuration, for example, in a vehicle that can operate as an electric assist bicycle and a bicycle with a specific small engine, when operating as a bicycle with a specific small engine, power is not transmitted from the crank to a power transmission member such as a chain wheel, and even when the occupant pedals, the pedaling force is not transmitted. At this time, for example, even if the occupant pedals, the crank rotates freely, so it is easy for the occupant to recognize that the vehicle is operating as a bicycle with a specific small engine. In addition, a configuration in which the pedaling force of the occupant is not transmitted can be realized with a relatively simple configuration.

[0015] In the above vehicle, preferably, it may be capable of traveling in the first mode and the second mode. According to such a vehicle, for example, it can be a vehicle that can operate as an electric assist bicycle and a bicycle with a specific small engine.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0017] A bicycle according to an aspect of the present invention is capable of traveling in a first traveling mode in which it travels as a bicycle with a specific small engine that travels only by the driving force from the motor, and a second traveling mode in which it travels as an electric assist bicycle that travels while being assisted by the driving force from the motor, and is configured to prevent traveling at a speed exceeding a safe speed while traveling as a bicycle with a specific small engine. In addition, for the sake of convenience of explanation, in this embodiment, a bicycle is taken as a specific example, but the configuration of this embodiment may also be applicable to vehicles that do not fall within the definition of a bicycle.

[0018] Hereinafter, a vehicle according to an embodiment of the present invention will be specifically described with reference to the drawings. However, the embodiments and modifications described below are merely examples of the present invention and do not limitatively interpret the technical scope of the present invention. In each drawing, the same reference numerals are assigned to the same components.

[0019] In this specification, for convenience of explanation, the direction of travel of the bicycle is defined as the front, and the opposite side as the rear. Also, the directions perpendicular to the direction of travel of the bicycle, namely the right and left directions when viewing the bicycle and the vehicle from the front, are referred to as the right direction and the left direction respectively, and these are collectively referred to as the left-right direction or the width direction. Further, the direction perpendicular to the direction of travel and the left-right direction of the bicycle is referred to as the up-down direction, which includes cases where it is not necessarily perpendicular to the direction of travel. That is, the up-down direction refers to the vertical direction, including those that are not strictly vertical.

[0020] FIG. 1 is a view showing the bicycle 1 of this embodiment. FIG. 2 is a block diagram showing the functional configuration of the bicycle 1.

[0021] As shown in the figure, the bicycle 1 has a frame including a front fork 11, a head pipe 12, a down tube 13, a seat tube 14, seat stays 15, and chain stays 16. The bicycle 1 also has a front wheel 17, a rear wheel 18, a front wheel axle 19, a rear wheel axle 20, a handle stem 21, a handle 22, a seat post 23, a saddle 24, a crankshaft 25, cranks 26, pedals 27, a basket 31, and a light 32. In this specification, the front wheel 17 and the rear wheel 18 may be collectively referred to as wheels. The front wheel 17 is attached to the end of the front fork 11 via the front wheel axle 19. The rear wheel 18 is rotatably attached near the intersection of the seat stays 15 and the chain stays 16 via the rear wheel axle 20. A sprocket 30 is rotatably attached to the rear wheel axle 20 and is connected to the rear wheel. A handle stem 21 is rotatably inserted into the head pipe 12. A handle 22 is attached to the upper end of the handle stem 21. A seat post 23 is connected to the seat tube 14. A saddle 24 is attached to the upper end of the seat post 23. One end of the chain stay 16 supports a crankshaft 25, and a crank 26 is attached to the crankshaft 25. A pedal 27 is rotatably attached to the tip of the crank 26. The crankshaft 25 is connected to an annular chain wheel 28. A chain 29 is wound around the chain wheel 28. The chain 29 is provided between the chain wheel 28 and the sprocket 30 and transmits the rotation of the chain wheel 28 to the sprocket 30. A basket 31 is disposed in front of the head pipe 12. A light 32 is disposed below the basket 31.

[0022] As shown in FIGS. 1 and 2, the bicycle 1 has a battery 41, a control unit 42, a torque sensor 43, a motor 44, a speed sensor 45, and an operation unit 46. In this embodiment, when the bicycle 1 travels in the first driving mode, the torque sensor 43 functions as an accelerator operation unit that adjusts the power generated by the motor 44.

[0023] The battery 41 is detachably attached behind the seat tube 14. The battery 41 is electrically connected to the control unit 42, the torque sensor 43, the motor 44, the speed sensor 45, the operation unit 46, and the light 32 via wiring (not shown) to supply power to these components. The battery 41 is composed of a storage battery such as a lithium-ion secondary battery, for example, and can be repeatedly used by charging. When the motor 44 can generate regenerative power, the battery 41 can be charged by this regenerative power.

[0024] The control unit 42 is disposed below the battery 41 and performs various electrical controls in the bicycle 1. The control unit 42 controls, for example, the power generated by the motor 44. Specific examples of the control by the control unit 42 will be described later. Note that the location where the control unit 42 is disposed may be arbitrarily determined.

[0025] The torque sensor 43 is connected to the crank 26 and disposed to detect the pedaling force applied to the pedal 27 by the rider as a torque value and transmit the detection result to the control unit 42. As will be described later, in the first traveling mode, the torque sensor 43 functions as an accelerator operation unit that adjusts the speed of the bicycle 1.

[0026] The motor 44 is connected to the front wheel axle 19 of the front wheel 17 and disposed to rotate by the power supplied from the battery 41, generate power for rotating the front wheel 17 to apply a driving force. The operation of the motor 44 is controlled by the control unit 42. The motor 44 is, for example, a well-known three-phase DC brushless motor. Also, the motor 44 may regeneratively charge the battery 41 by rotating in response to the rotation of the front wheel 17.

[0027] The speed sensor 45 is connected to the front wheel axle 19 and disposed to detect the speed of the bicycle 1 by detecting the rotation speed of the front wheel 17 and transmit it to the control unit 42. Note that the speed sensor 45 may be disposed at other locations where the speed of the bicycle 1 can be detected, or may be replaced with other components.

[0028] The operation unit 46 is attached to the handle 22, has one or more operable operation buttons for the occupant, detects the operation by the occupant, and transmits it to the control unit 42. The operation unit 46 has a light operation button which is a button for displaying the light 32. The operation unit includes a travel mode setting button which is a button for setting the travel mode of the bicycle 1 to either the first travel mode or the second travel mode. The operation unit 46 includes a display unit capable of displaying the state of the travel mode, the set state of the ratio of the auxiliary driving force to the pedaling force (assist ratio), the on / off state of the light, etc. Note that the operation unit 46 may be disposed at a portion other than the handle 22.

[0029] [Operation Example] The bicycle 1 can travel in a first travel mode in which it travels as a specific small-engine-equipped bicycle that travels only by the driving force from the motor 44, and a second travel mode in which it travels as an electric assist bicycle that travels while being assisted by the driving force from the motor 44. In this specification, for convenience of explanation, the terms "specific small-engine-equipped bicycle" and "electric assist bicycle" are used for explanation, but these do not necessarily have to satisfy all the definitions of "specific small-engine-equipped bicycle" and "electric assist bicycle", and it is sufficient that the bicycle can switch between the first travel mode in which it travels only by the driving force from the motor and the second travel mode in which it travels while being assisted by the driving force from the motor 44.

[0030] The control unit 42 sets the travel mode of the bicycle 1 to either the first travel mode or the second travel mode according to the operation input from the occupant detected by the operation unit 46. The control unit 42 has a storage unit (not shown) and stores this setting. The control unit 42 adjusts the power supplied to the motor 44 according to the inputs from the torque sensor 43, the speed sensor 45, and the operation unit 46, and controls the power generated by the motor 44. The state of the travel mode is displayed on the display unit of the operation unit 46.

[0031] Figure 3 is a flowchart showing an example of operation control according to the travel mode of the bicycle 1.

[0032] When the driving mode is the first driving mode (at "first driving mode" in S10), the control unit 42 restricts the rotation of the crankshaft 25 and the crank 26 connected to the crankshaft 25 so that they do not rotate, and puts the state where no propulsive force is applied to the bicycle 1 from the occupant. More specifically, the control unit 42 controls a rotation suppression member provided between the crank 26 and the chain wheel 28 that suppresses the rotation of the crank 26 to stop the rotation of the crank 26. Thereby, even if the occupant applies a pedaling force to the pedal 27, the crank 26 will not rotate. At this time, the pedaling force applied to the pedal 27 is detected by the torque sensor 43.

[0033] Next, the control unit 42 checks the speed detected by the speed sensor 45 (S20). When the speed is less than a predetermined target speed (for example, 19.9 km / h) (N in S20), the control unit 42 controls the power generated by the motor 44 according to the speed detected by the speed sensor 45 and the pedaling force, that is, the torque detected by the torque sensor 43 (S21). At this time, the torque sensor 43 functions as an accelerator operation unit. Specifically, according to the difference between the accelerator input speed determined according to the torque detected by the torque sensor 43 and the detected speed, the greater the difference, the greater the power generated by the motor 44, and the control unit 42 controls the power supplied to the motor 44. The control of the power supplied to the motor 44 is performed, for example, by controlling the output current.

[0034] On the other hand, when the speed is equal to or higher than the target speed (for example, 19.9 km / h) (Y in S20), the control unit 42 controls the power generated by the motor 44 so that the speed detected by the speed sensor 45 does not exceed the target speed (S22). Specifically, when the detected speed is about to exceed the target speed, the control unit 42 suppresses the power generated by the motor 44 so that the bicycle 1 does not accelerate.

[0035] In the first driving mode, control is performed so that the speed detected by the speed sensor 45 does not exceed the target speed (for example, 19.9 km / h). This ensures that even if there are variations or delays in the speed measurement, the speed of the bicycle 1 does not exceed a predetermined maximum speed (for example, 20 km / h). In this embodiment, the speed range is set to ±0.1 km / h, and the speed is set to be within the range of 19.8 km / h to 20.0 km / h. Note that the maximum speed here is assumed to be the legal maximum speed of a specific small motor-assisted bicycle, but it is not limited to this and can be arbitrarily changed. Also, the target speed can be arbitrarily changed according to the measurement variations of each component and the design specifications, based on the maximum speed.

[0036] When the driving mode is the second driving mode (in S10, "second driving mode"), the control unit 42 controls the power generated by the motor 44 according to the speed detected by the speed sensor 45 and the pedaling force, that is, the torque detected by the torque sensor 43 (S11). The pedaling force applied by the occupant during driving in the second driving mode becomes the main driving force of the bicycle 1. The control of the motor 44 by the control unit 42 at this time is the same as the control in a conventional electric assist bicycle. That is, the control unit 42 controls the motor 44 so that the power (torque) generated by the motor 44 with respect to the detected torque becomes a predetermined ratio according to the speed. More specifically, when the speed is up to 10 km / h, the control unit 42 causes the motor 44 to generate a torque up to twice the detected torque. When the speed exceeds 10 km / h and reaches 24 km / h, the torque generated by the motor 44 with respect to the detected torque is gradually reduced. When the speed exceeds 24 km / h, the torque generated by the motor 44 is stopped. In the second driving mode, the control unit 42 does not limit the speed even if the speed is above a predetermined speed as in the first driving mode.

[0037] [Modification Example] The bicycle 1 of the embodiment can be variously modified without departing from the gist of the invention. For example, the bicycle 1 may adopt the following modification examples.

[0038] In the embodiment, in the first driving mode, the control unit 42 stops the rotation of the crank 26 by suppressing it with a rotation suppression member, putting the bicycle 1 in a state where no driving force can be applied to the wheels from the occupant. However, the bicycle 1 may be put in a state where no driving force can be applied to the wheels from the occupant by other means. For example, it can be configured to have a clutch that connects the crank 26 and the chain wheel 28. In this case, in the first driving mode, the control unit 42 controls the clutch so that the connection between the crank 26 and the chain wheel 28 is released. Thus, even if the occupant applies a pedaling force to the pedal 27, the crank 26 rotates freely and no power is transmitted to the chain wheel 28. Even with such a configuration, it is possible to configure that the pedaling force applied by the occupant to the pedal 27 is not transmitted to the wheels. Note that the chain wheel 28 may be connected to a power transmission member other than the crank 26.

[0039] In the bicycle 1, the torque sensor 43 functions as an accelerator operation unit that adjusts the power generated by the motor 44. However, the accelerator operation unit may be configured other than the torque sensor 43. That is, the accelerator operation unit may be a manual operation unit manually operated by the occupant. For example, it may be a handlebar like a motorcycle or the operation unit 46. In particular, if a configuration having the above clutch is adopted and the crank 26 rotates freely in the first driving mode, it becomes difficult for the torque sensor 43 that detects the pedaling force applied to the pedal 27 to detect the pedaling force. Therefore, it is preferable to adopt the handlebar or the operation unit 46 as the accelerator operation unit in this way.

[0040] In the embodiment, a configuration example in which the bicycle 1 has a chain 29 and a chain wheel 28 has been described. However, the power transmission member for transmitting power from the crank 26 to the wheels (for example, the rear wheel 18) in the bicycle 1 is not limited to these. For example, the bicycle 1 may be configured to have a belt and pulleys as the power transmission member, or may be configured to use a drive shaft.

[0041] The torque sensor 43 may be replaced by another sensor for detecting the pedaling force applied to the pedal 27 by the occupant. Further, even when the bicycle 1 employs the torque sensor 43, the position where the torque sensor 43 is disposed is not limited to the position of the embodiment.

[0042] The speed sensor 45 may be disposed at another location where the speed of the bicycle 1 can be detected, or may be replaced by another configuration. For example, the speed sensor 45 may be disposed connected to the rear wheel axle 20 or the chain wheel 28. Further, the speed sensor 45 may be constituted by an acceleration sensor, an angular velocity sensor, or a GPS (Global Positioning System) or the like.

[0043] The motor 44 may be disposed connected to the rear wheel 18 instead of the front wheel 17.

[0044] The bicycle 1 is a saddle type vehicle including a saddle 24, and may be equivalently referred to as a saddle type vehicle. The bicycle 1 may be a saddle type vehicle different from the configuration of the embodiment. Further, it may be a vehicle that does not have a saddle 24 and is not a saddle type.

[0045] In the embodiment, the control unit 42 controls so that the speed detected by the speed sensor 45 does not exceed a target speed (for example, 19.9 km / h) slower than the maximum speed (for example, 20 km / h), but may control so that the speed detected by the speed sensor does not exceed the maximum speed. That is, the control unit 42 may control so that the speed detected by the speed sensor 45 does not exceed a predetermined speed such as the maximum speed or the target speed.

[0046] The bicycle 1 of the embodiment was capable of traveling in the first traveling mode and the second traveling mode, but in addition to the second traveling mode, or instead of the second traveling mode, it may be capable of traveling in a third traveling mode in which the wheels are driven by the driving force given by the occupant without power being given from the motor. That is, the bicycle 1 may be capable of traveling in the first traveling mode, the second traveling mode, and the third traveling mode, or the first traveling mode and the third traveling mode.

[0047] [Features of Bicycle 1] The bicycle 1, which is a vehicle in the above-described embodiments and modifications, includes wheels (front wheel 17 and rear wheel 18), a speed sensor 45, a motor 44, a control unit 42, and a torque sensor 43. The speed sensor 45 detects the speed of the bicycle 1. The motor 44 generates power that gives a driving force to the wheels. The control unit 42 controls the power generated by the motor 44. The torque sensor 43 detects the pedaling force applied to the pedal 27 connected to the crank 26. The torque sensor 43, which is operated by the pedaling force applied by the occupant, functions as an accelerator operation unit. The bicycle 1 can travel in at least one of a first mode (first traveling mode), a second mode (second traveling mode), and a third mode (third traveling mode). In the first mode, the wheels are driven only by the driving force provided from the motor 44. In the second mode, the wheels are driven by the driving force provided from the motor 44 in addition to the driving force provided by the occupant. In the third mode, the wheels are driven by the driving force provided by the occupant. In the first mode, the control unit 42 adjusts the power generated by the motor 44 according to the speed detected by the speed sensor 45 and the input of the accelerator operation unit (i.e., the pedaling force detected by the torque sensor 43). In the second mode, the control unit 42 adjusts the power generated by the motor 44 according to the speed detected by the speed sensor 45 and the pedaling force detected by the torque sensor 43. In the first mode, the control unit 42 limits the power generated by the motor 44 so that the speed detected by the speed sensor 45 does not exceed a predetermined speed (for example, a target speed of 19.9 km / h).

[0048] In the above, the bicycle 1 may be configured to be able to travel in the first mode and the second mode.

[0049] In the bicycle 1 which is a vehicle, the control unit 42 may be configured not to perform control so that the speed detected by the speed sensor 45 does not exceed a predetermined speed (for example, 19.9 km / h).

[0050] In the bicycle 1 which is a vehicle, in the first mode, the control unit 42 may be configured such that no driving force is applied to the vehicle of the bicycle 1 by the occupant.

[0051] In the bicycle 1 which is a vehicle, the accelerator operation unit is the torque sensor 43, and in the first mode, the control unit 42 may be configured to control so as to suppress the rotation of the crank 26.

[0052] Also, in the bicycle 1 which is a vehicle, the accelerator operation unit may be a manual operation unit such as a handle or the operation unit 46 that is manually operated by the occupant. At this time, the crank 26 is connected to a power transmission member (for example, the chain wheel 28) connected to the wheel, and in the first mode, the control unit 42 may be configured to release the connection between the crank 26 and the power transmission member (for example, the chain wheel 28).

Explanation of Reference Numerals

[0053] 1…Bicycle 11…Front fork 12…Head pipe 13…Down tube 14…Seat tube 15…Seat stay 16…Chain stay 17…Front wheel 18…Rear wheel 19…Front wheel axle 20…Rear wheel axle 21…Handle stem 22…Handle 23…Seat post 24…Saddle 25…Crankshaft 26…Crank 27…Pedal 28…Chain wheel 29…Chain 31…Basket 32…Light 41…Battery 42…Control unit 43…Torque sensor 44…Motor 45…Speed sensor 46…Operation unit

Claims

1. A wheel, a speed sensor for detecting speed, a motor for generating power to apply a driving force to the wheel, a control unit for controlling the power generated by the motor, a torque sensor for detecting the pedaling force applied to a pedal connected to a crank, an accelerator operation unit operated by an occupant, and is capable of traveling in a first mode in which the wheel is driven only by the driving force provided by the motor, at least one of a second mode in which the wheel is driven by the driving force provided by the occupant in addition to the driving force provided by the motor, and a third mode in which the wheel is driven by the driving force provided by the occupant, in the first mode, the control unit adjusts the power generated by the motor according to the speed detected by the speed sensor and the input of the accelerator operation unit, in the second mode, the control unit adjusts the power generated by the motor according to the speed detected by the speed sensor and the pedaling force detected by the torque sensor, in the first mode, the control unit restricts the power generated by the motor so that the speed detected by the speed sensor does not exceed a predetermined speed, a vehicle.

2. In the second mode, the control unit does not perform control so that the speed detected by the speed sensor does not exceed the predetermined speed, The vehicle according to claim 1.

3. In the first mode, the control unit places the state where no driving force is given from the occupant, The vehicle according to claim 2.

4. The accelerator operation unit is the torque sensor, In the first mode, the control unit controls to suppress the rotation of the crank, The vehicle according to claim 3.

5. The accelerator operation unit is a manual operation unit manually operated by the occupant, The crank is connected to a power transmission member connected to the wheel, In the first mode, the control unit releases the connection between the crank and the power transmission member, The vehicle according to claim 3.

6. The vehicle according to any one of claims 1 to 5, which is capable of traveling in the first mode and the second mode.

Images