JP6757487B2 - Electric vehicle - Google Patents

Description

The present invention relates to an electric vehicle in which a large driving force can be obtained with a small human power, and even a physically handicapped person can easily drive while obtaining a sense of accomplishment of self-driving.

Electric assisted bicycles that run using human power as the main drive source and the rotational force of the electric motor as the auxiliary drive source are widely used (see, for example, Patent Document 1).

In this type of electrically power assisted bicycle, when a load exceeding a certain level is applied on a slope or the like, an electric motor operates to forcibly rotate the wheels. Therefore, the burden on the driver can be reduced, and even a weak person such as a woman or a girl can easily drive.

On the other hand, even people who do not have the power to pedal or cannot pedal, such as the elderly and people with disabilities, can run to expand their living range, rehabilitate, relieve stress, change their mood, etc. There is a need to provide vehicles that can be easily carried out.

For such people, it is difficult to use the electrically power assisted bicycle, and it is indispensable to use only the electric motor as a drive source. However, in this case, it is difficult to obtain a sense of accomplishment of self-driving by simply controlling the output of the electric motor by operating a switch, and it is not possible to sufficiently contribute to rehabilitation, stress relief, change of mood, and the like.

Japanese Unexamined Patent Publication No. 09-076983

An object of the present invention is to provide an electric vehicle that can obtain a large driving force with a small amount of human power and that even a physically handicapped person can easily drive while obtaining a sense of accomplishment of self-driving. ..

The present invention includes a vehicle body having wheels, an electric motor for driving the wheels, and a control means for controlling the output of the electric motor.
The control means
Pumping means that compresses air manually,
A tank for storing compressed air from the pump means and
It includes a motor controller that controls the electric power supplied to the electric motor based on the information of the compressed air stored in the tank.

In the electric vehicle according to the present invention, the control means includes a converter that converts the magnitude of pressure in the tank into an electric signal.
It is preferable that the motor controller controls the electric power supplied to the electric motor based on the electric signal from the converter.

In the electric vehicle according to the present invention, the control means includes a throttle valve that gradually discharges compressed air in the tank and a converter that converts the flow rate of air discharged from the throttle valve into an electric signal.
It is also preferable that the motor controller controls the electric power supplied to the electric motor based on the electric signal from the converter.

In the electric vehicle according to the present invention, the control means preferably includes a one-way valve that allows only the flow of compressed air from the pump means to the tank.

In the electric vehicle according to the present invention, it is preferable that the pump means includes a pump that compresses air by operating the foot or a pump that compresses air by operating the fingers.

In the electric vehicle according to the present invention, the pump is preferably a piston pump or a vane pump.

In the electric vehicle according to the present invention, a three-wheeled vehicle, a wheelchair, or a four-wheeled vehicle can be adopted as the vehicle body.

In the present invention, the control means for controlling the output of the electric motor is based on information on a pump means that manually compresses air, a tank that stores compressed air from the pump means, and compressed air stored in the tank. A motor controller that controls the electric power supplied to the electric motor is included.

Specifically, the driver needs to intermittently or continuously store the compressed air in the tank by using the pump means in order to drive the vehicle. Then, the output of the electric motor is controlled according to the information of the compressed air stored in the tank, for example, the information such as the pressure in the tank. That is, since the traveling speed of the electric vehicle can be changed according to the amount of work of the driver, it is possible to obtain a sense of accomplishment of self-driving.

Further, since the information (for example, pressure) of the compressed air is once converted into an electric signal or the like to control the output of the electric motor, a large driving force can be obtained with a small human force. Moreover, the generation of compressed air by the pump means itself can be achieved with a small force. Therefore, it can be suitably applied to people with disabilities. In particular, the pumping means can also be actuated by one foot, hand, finger or other body part, as described in the "Modes for Carrying Out the Invention" section below. Therefore, the electric vehicle of the present invention can be provided to various people having different degrees of physical disability and inconvenient parts.

It is a side view which shows the electric vehicle of 1st Embodiment of this invention. (A) and (b) are a partial perspective view and a partial cross-sectional view illustrating the pump means. It is a conceptual diagram which shows the control means. It is a conceptual diagram which shows another example of a control means. It is sectional drawing which shows the other example of a pump means. (A) and (b) are perspective views showing still another example of the pump means. It is a perspective view which shows the interlocking means. It is a conceptual diagram which shows the interlocking means. It is sectional drawing which shows the 1st and 2nd cylinder enlarged. It is a conceptual diagram explaining the structure and function of a turning direction sensor. It is a conceptual diagram of a main switch. It is a side view which shows the 2nd Embodiment of an electric vehicle. (A) and (b) are partial cross-sectional views illustrating the pump means.

Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIG. 1, the electric vehicle 1 of the present invention includes a vehicle body 3 having wheels 2, an electric motor 50 for driving the wheels 2, and a control means 51 for controlling the output of the electric motor 50. ..

In the present embodiment (first embodiment), the vehicle body 3 is a three-wheeled vehicle 3A, and one of the front wheels 2F or the rear wheels 2R has a first wheel 11 and a second wheel 12 separated to the left and right. It consists of multiple wheels including. Such a three-wheeled vehicle 3A has a low risk of tipping over and has high running safety, and therefore can be suitably adopted for driving by a physically handicapped person. In this example, the case where the rear wheel 2R has a two-wheel structure including the first wheel 11 and the second wheel 12 is shown.

The vehicle body 3 includes a frame body 18 that extends back and forth and has a head pipe 17 at the front end, and a steering shaft 19 that is rotatably held by the head pipe 17. The front wheel 2F is attached to the lower end of the steering shaft 19 via the front fork 16, and the handle 20 is attached to the upper end. The frame body 18 of this example includes a wide floor plate portion 18A forming a footrest of the driver on the front side of the seat portion 15.

In this example, the electric motor 50 is a wheel-in motor and drives the front wheels 2F.

The control means 51 includes a pump means 52, a tank 53, and a motor controller 54, and is attached to the floor plate portion 18A in this example.

As shown in FIGS. 2A and 2B, the pump means 52 manually compresses air. The pump means 52 of this example includes a pump 59 that compresses air by foot operation, and an operation unit 65 for foot operation of the pump 59. The operation unit 65 has a foot pedal 65A. In this example, in order to select the operation with only one foot or the operation with both feet, the pump means 52 may be provided with a pair of the pump 59 and the operation unit 65 on both the left and right sides, respectively. .. However, the set may be provided on only one side.

The pump 59 is a so-called piston pump, and includes a cylinder 66 supported by the floor plate portion 18A and a piston 67 slidably arranged in the cylinder 66. The foot pedal 65A is connected to the upper end of the piston rod 68 extending from the piston 67 through the floor plate portion 18A. In this example, the foot pedal 65A is pivotally supported on one end side by an axial center j, whereby the other end side can be tilted up and down. The piston 67 is urged upward by the spring means 69.

Therefore, in the pump means 52 of this example, for example, by depressing the foot pedal 65A at the tip of the foot, the air in the pump chamber 59H can be compressed and sent from the exhaust port 70 to the tank 53.

The tank 53 is a pressure vessel and temporarily stores the compressed air from the pump means 52.

As shown in FIG. 3, the control means 51 includes a one-way valve 58 interposed between the tank 53 and the pump 59. On the other hand, the valve 58 only allows the flow of compressed air from the pump 59 to the tank 53.

Further, the control means 51 includes a throttle valve 56 for gradually discharging the compressed air in the tank 53. As the throttle valve 56, a flow rate adjusting valve can be preferably adopted. Reference numeral 57 in the figure is a sound deadening unit, which silences the air from the throttle valve 56 and discharges it to the outside air. In the sound deadening unit 57, a filter or the like can be used for sound deadening.

The motor controller 54 controls the electric power supplied to the electric motor 50 based on the information of the compressed air stored in the tank 53. In this example, the pressure in the tank 53 is adopted as "compressed air information", and the electric power supplied to the electric motor 50 is controlled based on the magnitude of this pressure.

Specifically, the control means 51 includes a converter 55 that converts the magnitude of the pressure in the tank 53 into an electric signal, and the motor controller 54 bases the electric motor 50 based on the electric signal from the converter 55. Control the power supplied to.

As the converter 55, various pressure converters such as a pressure sensor can be adopted. The upper limit of the pressure in the tank 53 is preferably about 300 kPa, and therefore, it is preferable to use a pressure converter corresponding to the pressure in this range. Reference numeral 61 is a battery, and the motor controller 54 controls the electric power supplied from the battery 61 to the electric motor 50 to control the start, stop, torque, rotation speed, and the like of the electric motor 50.

However, when the driver operates the pump means 52 continuously or intermittently by human power, the pressure in the tank 53 rises by overcoming the discharge capacity from the throttle valve 56. This pressure is converted into an electric signal, and the output of the electric motor 50 is controlled based on this electric signal.

That is, in order to drive the vehicle, manual work by the driver on the pump means 52 is required intermittently or continuously. Then, the traveling speed, torque, and the like of the electric vehicle can be changed according to the amount of work. Therefore, the driver can get a sense of accomplishment of self-driving. In this example, the internal pressure is gradually discharged via the throttle valve 56, so that when the work on the pump means 52 is stopped, the traveling speed and the torque are gradually reduced and stopped. Therefore, it is possible to obtain a feeling of maneuvering similar to that of a bicycle. For braking, a braking means having a well-known structure may be separately provided.

Further, in the electric vehicle 1, since the amount of work of the driver is once converted into an electric signal or the like and the output of the electric motor 50 is controlled, a large driving force can be obtained with a small human force. Moreover, since the generation of compressed air by the pump means 52 itself can be achieved with a small force, it can be applied to people with disabilities. In this example, if at least one foot has the power to step on the foot pedal 65A, it is possible to run even if there is no power to pedal with both feet like a bicycle, and for a physically handicapped person, life It can greatly contribute to the expansion of the range, rehabilitation, stress relief, and change of mood.

It is preferable that the tank 53 is provided with a relief valve 53A to regulate the upper limit pressure in the tank. Thereby, the maximum speed of the electric vehicle 1 can be limited. Further, when the flow rate adjusting valve is adopted as the throttle valve 56, the exhaust flow rate can be freely set, so that the ratio of the pressure increase in the tank to the amount of work of the driver can be appropriately adjusted according to the degree of physical inconvenience. Can be adjusted. For example, by setting a small exhaust flow rate for a person with a large degree of physical disability, the pressure rise can be increased with a small amount of work, and the burden on the driver can be reduced. Further, when the flow rate adjusting valve (throttle valve 56) is closed in the middle, even if the work on the pump means 52 is interrupted, the pressure remains in the tank, so that the traveling can be continued.

The control means 51 can also be configured as shown in FIG. In the control means 51 of this example, the flow rate of the air discharged from the throttle valve 56 is used as "compressed air information". Then, the electric power supplied to the electric motor 50 is controlled based on the magnitude of this flow rate.

Specifically, the control means 51 is provided with a converter 62 that converts the magnitude of the air discharge flow rate from the throttle valve 56 into an electric signal instead of the pressure converter 55. As the converter 62, various flow rate converters such as a flow rate sensor can be adopted. The motor controller 54 controls the electric power supplied to the electric motor 50 based on the electric signal from the converter 62.

As shown in FIG. 5, as the pump 59, a pump other than the piston pump may be adopted. The pump 59 of this example includes a leaf spring-shaped operation plate 71 that is easily elastically deformed, and a flexible bag-shaped body 72 that is arranged between the operation plate 71 and the floor plate portion 18A. The operation plate 71 has a leaf spring shape that is habituated in an inverted V shape, and one end thereof is pivotally supported by an axial center j. The other end of the operation plate 71 is guided by the guide 73 so as to be slidable back and forth along the floor plate portion 18A. The bag-shaped body 72 is adhered to the lower surface of the operation plate 71 and the upper surface of the floor plate portion 18A, respectively. Further, the bag-shaped body 72 is provided with an air supply port 72A and an exhaust port 72B, and the air supply port 72A is a one-sided valve 74 that allows only air supply from the outside into the bag-shaped body 72. Is arranged.

Therefore, the bag-shaped body 72 may be in an expanded state by being supplied with air from the air supply port 72A due to the inverted V-shaped habit of the operation plate 71. Further, by stepping on the operation plate 71 with the tip of the foot, the operation plate 71 is deformed into a flat plate shape, the air in the bag-shaped body 72 can be compressed, and the air can be sent from the exhaust port portion 72B to the tank 53.

6 (a) and 6 (b) show still another example of the pump means 52. In FIG. 6A, the pump means 52 includes a pump 59 which is a piston pump and an operation unit 75 which is shaped like a pedal mechanism of a bicycle. The operation unit 75 includes the crank mechanism 75A in this example. The crank mechanism 75A has, for example, a wheel-shaped first crank 76 connected to a piston rod 68 of the pump 59 and one end of the piston rod 68 and rotates the one end around the axis i, and a foot pedal 77A. Includes a second crank 77 that rotates one crank 76.

In FIG. 6B, the pump means 52 includes a pump 59, which is a vane pump, and an operation unit 78. The operating unit 78 includes a crank 79 having a foot pedal 79A that rotates the rotor in the pump 59, which is a vane pump, around the axis i. Reference numeral 80A is an air supply port of the pump 59, and 80B is an exhaust port.

As described above, as the pump means 52 and the pump 59, those having various structures can be adopted. As another example of the pump 59 or the like, for example, a plunger pump, a diaphragm pump, a squeeze pump, or the like can be adopted.

As shown in FIGS. 1 and 7, in the electric vehicle 1 of the present embodiment, the first and second wheels 11 and 12, which are the rear wheels 2R, can be moved up and down, respectively, in order to improve the stability at the time of turning. It further includes a wheel supporting means 4 for supporting, and an interlocking means 5 for alternately interlocking (synchronizing) the vertical movement of the first wheel 11 and the vertical movement of the second wheel 12.

The wheel supporting means 4 includes first and second swing arms 13 and 14, and one end of each of the swing arms 13 and 14 is pivotally supported by the support shaft 6, so that the other end side tilts up and down. Can be done.

The support shafts 6 are formed at both ends of the horizontal support shafts 7 that are supported by the frame body 18 and extend to the left and right. On the other hand, one end of the first and second swing arms 13 and 14 is pivotally supported by the other support shaft portion 6. A first wheel 11 is pivotally supported at the other end of the first swing arm 13, and a second wheel 12 is pivotally supported at the other end of the second swing arm 14.

The interlocking means 5 includes a first cylinder 21, a second cylinder 22, a fluid passage 25, and a fluid control means 26 interposed in the fluid passage 25.

As conceptually shown in FIG. 8, the first cylinder 21 has a first chamber 23 through which fluid flows in and out as the first wheel 11 moves up and down. The second cylinder 22 has a second chamber 24 through which a fluid flows in and out as the second wheel 12 moves up and down. A liquid such as oil is preferably used as the fluid.

In the case of this example, in the first cylinder 21, the fluid flows out from the first chamber 23 with the upward movement of the first wheel 11, and conversely, with the downward movement of the first wheel 11. The fluid flows into the first chamber 23. Further, in the second cylinder 22, the fluid flows out from the second chamber 24 with the upward movement of the second wheel 12, and conversely, with the downward movement of the second wheel 12, the second chamber 24 Fluid flows into the wheel.

The fluid passage 25 connects the first chamber 23 and the second chamber 24 so that the fluid can flow back and forth.

Therefore, in this example, when the first wheel 11 moves upward due to pushing up from the road surface, the fluid flowing out of the first chamber 23 flows into the second chamber 24 through the fluid passage 25. As a result, the second wheel 12 can be pushed down by the second cylinder 22 and move downward. On the contrary, when the second wheel 12 moves upward, the fluid flowing out from the second chamber 24 flows into the first chamber 23 through the fluid passage 25, and the first cylinder 21 allows the first cylinder 21 to flow into the first chamber 23. Wheels 11 can be moved downwards.

In this way, the interlocking means 5 can alternately interlock (synchronize) the vertical movements of the first and second wheels 11 and 12 with a simple structure.

As substantially shown in FIG. 9, the first and second cylinders 21 and 22 each include a cylindrical cylinder body 30 whose ends are closed and a piston 31 slidably arranged in an inner hole thereof. To have. A first swing arm 13 or a second swing arm 14 is connected to the tip of the rod 32 extending from the piston 31, respectively.

The inside of the cylinder body 30 is divided into one space 33A and 33B by the piston 31, and the first chamber 23 of the first cylinder 21 and the first space 33B of the second cylinder 22 are divided by the one space 33A. Two chambers 24 are formed respectively.

In this example, the space 33B of the first and second cylinders 21 and 22 is also filled with fluid, and the spaces 33B and 33B are connected by an auxiliary fluid path 34. In this way, when the spaces 33B and 33B are connected by the auxiliary fluid passage 34, the synchro operation when a downward force acts on one of the first and second wheels 11 and 12 is performed more stably. sell. If required, the spaces 33B and 33B can be opened without being filled with fluid.

In this example, the first and second cylinders 21 and 22 are supported by the frame body 18 via the cushion mechanism 35.

In this example, the cushion mechanism 35 is a tubular sliding body 36 that is slidably externally inserted above the cylinder body 30, and a spring body, for example, a compression spring that is interposed between the sliding body 36 and the cylinder body 30. Includes 29 and. The sliding body 36 is formed with a notch 36A that avoids interference with the port of the fluid passage 25 during sliding.

When an impact is applied to one or both of the first and second wheels 11 and 12 during traveling, the cushion mechanism 35 damps and relaxes the impact and loads the first and second cylinders 21 and 22. Can be reduced. The cushion mechanism 35 is not limited to the above structure, and various structures can be adopted. The cushion mechanism 35 can be eliminated upon request. In particular, when a gas such as air is used as the fluid, the cushion mechanism 35 can be eliminated because the cushion function is added to the first and second cylinders 21 and 22 themselves.

As shown in FIG. 8, the fluid control means 26 intervenes in the fluid passage 25 and controls the flow of fluid between the first chamber 23 and the second chamber 24.

In this example, the interlocking means 5 includes a turning direction sensor 9 that detects the direction of the turning K of the electric vehicle 1, and the fluid control means 26 is operated by the turning direction sensor 9.

The turning direction sensor 9 operates in response to an operation of the steering wheel 20, for example. As shown in FIG. 10, the turning direction sensor 9 of this example includes a pair of button-type switches 27A and 27B such as a micro switch, and an operating portion 28 for turning on and off the switches 27A and 27B. It is composed. In this example, the case where the switches 27A and 27B are attached to the handle 20 and the operating portion 28 is attached to, for example, the head pipe 17 is shown. However, the reverse is also possible.

In the switches 27A and 27B, for example, a button-shaped switch portion 27a is arranged at a symmetrical position about the rotation center 20j of the handle 20.

In this example, the operating portion 28 has a substantially semicircular inner peripheral surface 28s concentric with the rotation center 20j, and the inner peripheral surface 28s pushes the switch portion 27a by steering the steering wheel during turning, so that the switch 27A Alternatively, switch 27B is turned on. In this example, the switch 27A is turned on by turning right, and the switch 27B is turned on by turning left. The operating portion 28 is appropriately set with a substantially semicircular angle so as not to come into contact with each switch portion 27a when traveling straight. Slopes 28s1 for facilitating contact with the switch portion 27a are formed on both ends of the inner peripheral surface 28s in the circumferential direction. The upper surface or the lower surface of the operating portion 28 can also be configured to push the switch portion 27a.

As the turning direction sensor 9, various structures can be adopted, for example, a non-contact sensor such as an optical sensor is used as the switches 27A and 27B.

As shown in FIG. 8, the fluid control means 26 includes a first on-off valve 37, a second on-off valve 38 arranged between the first on-off valve 37 and the second chamber 24, and the first on-off valve 38. It includes a first bypass flow path 39 that connects the front and rear of the on-off valve 37, and a second bypass flow path 40 that connects the front and rear of the second on-off valve 38.

As the first and second on-off valves 37 and 38, the solenoid valve 41 can be preferably adopted. The solenoid valve 41 operates by a signal from the turning direction sensor 9. In this example, the first and second on-off valves 37 and 38 (solenoid valves 41) are energized when the switches 27A and 27B are on, close the valves, and de-energized when the switches 27A and 27B are off to open the valves.

Further, the first bypass flow path 39 is interposed with a first one-sided valve 43 that allows only the flow of fluid from the second chamber 24 to the first chamber 23. The second bypass flow path 40 is interposed with a second one-way valve 44 that allows only the flow of fluid from the first chamber 23 to the second chamber 24.

Therefore, when the switch 27A is turned to the right and the switch 27A is turned on, the first on-off valve 37 is closed, and the action of the first one-way valve 43 prevents the outflow of fluid from the first chamber 23 to the second chamber 24. Will be done. Therefore, the upward movement of the first wheel 11 and the downward movement of the second wheel 12 are prevented. As a result, the inclination of the vehicle body toward the first wheel 11 side, that is, the inclination of the vehicle body outward in the turning direction is prevented.

Further, in the right turn, the switch 27B is not turned on, and the second on-off valve 38 is maintained in the open state. Therefore, the outflow of fluid from the second chamber 24 to the first chamber 23 is permitted. Therefore, the upward movement of the second wheel 12 and the downward movement of the first wheel 11 are possible. As a result, the inclination of the vehicle body toward the second wheel 12 side, that is, the inclination of the vehicle body inward in the turning direction is permitted.

The same applies to the left turn, and when the switch 27B is turned on by turning left, the second on-off valve 38 is closed and the fluid from the second chamber 24 to the first chamber 23 by the action of the second one valve 44. Outflow is blocked. Therefore, the upward movement of the second wheel 12 and the downward movement of the first wheel 11 are prevented. As a result, the inclination of the vehicle body toward the second wheel 12 side, that is, the inclination of the vehicle body outward in the turning direction is prevented.

Further, in the left turn, the switch 27A does not turn on, and the first on-off valve 37 is maintained in the open state. Therefore, the outflow of fluid from the first chamber 23 to the second chamber 24 is permitted. Therefore, the upward movement of the first wheel 11 and the downward movement of the second wheel 12 are possible. As a result, the inclination of the vehicle body toward the first wheel 11 side, that is, the inclination of the vehicle body inward in the turning direction is permitted.

In other words, the fluid control means 26 of this example controls the flow of fluid so as to prohibit the upward movement of the wheels (first wheel 11 or second wheel 12) located outside the detected turn. Can be done. At the same time, the fluid control means 26 can control the flow of fluid to allow downward movement of the wheels (first wheel 11 or second wheel 12) located outside the detected turn. ..

As a result, even when a large centrifugal force acts during turning, it is possible to prevent the vehicle body from tilting outward in the turning direction due to the centrifugal force and to tilt only inward in the turning direction. As a result, turning performance and steering stability can be further improved.

In the fluid control means 26, it is preferable to provide a flow rate control valve 45 between the first bypass flow path 39 and the second bypass flow path 40. Thereby, the reaction speed of the synchro operation of the first and second wheels 11 and 12 can be adjusted.

Further, the fluid control means 26 includes a main switch 47. As shown in FIG. 11, in this example, the main switch 47 has an operation unit 47A such as a lever or a button capable of switching between the first state Y1, the second state Y2, and the third state Y3.

In the first state Y1, the fluid control means 26 functions according to the signal (on, off) from the turning direction sensor 9, and the direction of the fluid flow in the fluid passage 25 can be controlled. In this case, it is possible to perform a synchro operation in which the vehicle body is prevented from tilting outward in the turning direction and the vehicle body is allowed to tilt inward in the turning direction.

In the second state Y2, regardless of the signal (on, off) from the turning direction sensor 9, each solenoid valve 41 is forcibly turned off and the valve is opened to open the fluid passage 25. In this case, it is possible to perform a normal unregulated synchro operation, that is, a synchro operation capable of freely tilting the vehicle body on both the left and right sides. This second state Y2 can be performed, for example, by turning off the main power supply.

In the third state Y3, regardless of the signal (on, off) from the turning direction sensor 9, each solenoid valve 41 is forcibly energized, the valve is closed, and the fluid passage 25 is closed. In this case, it is possible to park and stop the vehicle body in an upright state or an inclined state without a stand while turning on the main power supply. This third state Y3 is suitable for temporarily parking and stopping.

Further, the fluid control means 26 preferably includes a manually operated valve 46 (shown in FIG. 8) that can manually close the fluid passage 25 regardless of the main switch 47. The manually operated valve 46 of this example is arranged between the first bypass flow path 39 and the second bypass flow path 40.

The manually operated valve 46 makes it possible to park and stop the vehicle body in an upright state or an inclined state without a stand regardless of whether the main power supply is on or off. The manually operated valve 46 is suitable for long-term parking.

In the fluid control means 26 of this example, the solenoid valve 41 is closed only when it is energized, and is open when it is not energized. Therefore, even when electricity stops flowing due to, for example, a dead battery or a failure of the electric system, the fluid path 25 is opened and the normal synchro operation is maintained. Further, electricity is consumed only when turning in the first state Y1 and when the vehicle is temporarily parked and stopped in the third state Y3. Therefore, it is possible to keep the amount of electricity consumed low.

As the fluid control means 26, various structures can be adopted without being limited to the above structure.

Such an electric vehicle 1 can be configured for, for example, a two-seater, or the loading platform can be set large. In this case, it can also be used for the transfer of people and goods, which helps to increase work and employment opportunities, especially for people with disabilities.

FIG. 12 shows the electric vehicle 1 of the second embodiment. In the second embodiment, the vehicle body 3 is formed as a wheelchair 3B.

The vehicle body 3 (wheelchair 3B) includes a frame body 80, caster-shaped free wheels 81 which are a pair of left and right front wheels 2F supported by the front portion of the frame body 80, and left and right supported by the rear portion of the frame body 80. It includes a pair of rear wheels 2R, a drive wheel 82, and a seat portion 83 arranged at the center of the frame body 80. Further, the frame body 80 is further provided with armrests 84 arranged on both sides of the seat portion 83 and footrests 85 arranged on the lower front side of the seat portion 83.

The electric vehicle 1 includes an electric motor 50 that drives the drive wheels 82 that are the rear wheels 2R, and a control means 51 that controls the output of the electric motor 50.

As the electric motor 50, a wheel-in motor is preferably adopted as in the first embodiment.

The control means 51 includes a pump means 52, a tank 53, and a motor controller 54. As the pump means 52, in this example, a pump 87 (shown in FIG. 13A) that compresses air by hand operation and an operation unit 88 for operating the pump 87 are provided.

As shown in FIG. 13A, the operating unit 88 has a hand lever 88A. In this example, in order to select the operation with only one hand or the operation with both hands, the pump means 52 may be provided with a combination of the pump 87 and the operation unit 88 on both the left and right sides, respectively. .. However, the set may be provided on only one side.

The pump 87 is a so-called piston pump, and in this example, the pump 87 is attached to a shaft-shaped grip 89 rising from the armrest 84. Specifically, the pump 87 of this example includes a cylinder 90 mounted in the grip 89 and a piston 91 slidably arranged in the cylinder 90. The hand lever 88A is connected to the front end of the piston rod 92 extending forward from the piston 91. In this example, the hand lever 88A is pivotally supported on one end side by an axial center j, whereby the other end side can be tilted back and forth. The piston 91 is urged forward by the spring means 93.

Therefore, in the pump means 52 of this example, for example, by grasping the hand lever 88A with one hand, the air in the pump chamber can be compressed and sent from the exhaust port portion 94 to the tank 53. The tank 53, the motor controller 54, and the like have substantially the same configuration as that of the first embodiment, and are attached to the lower surface side of the seat portion 83 in this example.

FIG. 13B shows yet another example of the pump means 52. In this example, the pump means 52 includes a pump 97 that compresses air by operating a finger, and an operation unit 98 for operating the pump 97. The operation unit 98 has a push button unit 98A. In this example, in order to select the operation with only one hand or the operation with both hands, the pump means 52 may be provided with a combination of the pump 97 and the operation unit 98 on both the left and right sides, respectively. .. However, the set may be provided on only one side.

The pump 97 is a so-called piston pump, and includes a cylinder 100 mounted in the grip 89 and a piston 101 slidably arranged in the cylinder 100. The push button portion 98A is attached to the upper end portion of the piston rod 102 extending upward from the piston 101. The piston 101 is urged upward by the spring means 103. Therefore, in the pump means 52 of this example, for example, by pressing the push button portion 98A with one hand, the air in the pump chamber can be compressed and sent from the exhaust port portion 104 to the tank 53.

In the second embodiment, if at least one hand has the force to hold the hand lever 88A, or at least one hand has the force to push the push button portion 98A, it is possible to run, expand the living range, and rehabilitate. , Can greatly contribute to stress relief, change of mood, etc.

Further, for example, when the push button type pump means 52 as shown in FIG. 13B is adopted, it can be operated by other body parts other than hands and fingers such as arms and head. That is, by devising the pump means 52, the electric vehicle 1 can be provided to various people who have different degrees of physical disability and different parts of disability.

Further, in the electric vehicle 1 of the present invention, the vehicle body 3 can be configured as, for example, a four-wheeled vehicle (not shown) in the shape of a four-wheeled vehicle. In this case, as the pump means 52, one that can be operated by using a foot (both feet, one foot), a hand, a finger, or another part (for example, an arm or a head) can be appropriately adopted.

Although the particularly preferable embodiment of the present invention has been described in detail above, the present invention is not limited to the illustrated embodiment and can be modified into various embodiments.

1 Electric vehicle 2 Wheels 3 Vehicle body 3A Three-wheeled vehicle 3B Wheelchair 50 Electric motor 51 Control means 52 Pump means 53 Tank 54 Motor controller 55, 62 Converter 56 Throttle valve 58 One-sided valve 59, 87, 97 Pump

Claims (10)

A vehicle body having wheels, an electric motor for driving the wheels, and a control means for controlling the output of the electric motor are provided.
The control means
Pumping means that compresses air manually,
A tank for storing compressed air from the pump means and
A motor controller that controls the electric power supplied to the electric motor based on the information of the compressed air stored in the tank.
Electric vehicle. The control means includes a converter that converts the magnitude of pressure in the tank into an electrical signal.
The motor controller controls the electric power supplied to the electric motor based on the electric signal from the converter.
The electric vehicle according to claim 1. The control means includes a throttle valve that gradually discharges compressed air in the tank, and a converter that converts the flow rate of air discharged from the throttle valve into an electric signal.
The motor controller controls the electric power supplied to the electric motor based on the electric signal from the converter.
The electric vehicle according to claim 1. The control means includes a one-way valve that only allows the flow of compressed air from the pump means to the tank.
The electric vehicle according to any one of claims 1 to 3. The pump means comprises a pump that compresses air by foot operation.
The electric vehicle according to any one of claims 1 to 4. The pump means includes a pump that compresses air by manipulating the fingers.
The electric vehicle according to any one of claims 1 to 4. The pump is a piston pump or a vane pump,
The electric vehicle according to claim 5 or 6. The vehicle body is a three-wheeled vehicle.
The electric vehicle according to any one of claims 1 to 7. The vehicle body is a wheelchair.
The electric vehicle according to any one of claims 1 to 7. The vehicle body is a four-wheeled vehicle.
The electric vehicle according to any one of claims 1 to 7.

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