CN100545029C - Foldable light mass balance ambulation single wheel electric vehicle - Google Patents

Abstract

The utility model relates to a foldable light-mass balanced walking single-wheel electric vehicle, which relates to a single-wheel electric vehicle. The existing light electric vehicles have the problems of large size, heavy weight, inconvenient portability, and failure to give full play to the advantages of light electric vehicles. Motor (52) and speed reducer (53) are all installed in the wheel hub (11) of walking wheel (1), and motor (52) is connected with speed reducer (53), and speed reducer (53) and road wheel (1) The spoke plates or spokes (12) are fixedly connected, the vehicle body platform (2) is set on the traveling wheel (1) and fixedly connected with the motor shaft (13), and a The battery (5) and the first circuit board (6), the motor (52) is connected with the first circuit board (6) through the electrical connection (4), the first circuit board (6) is connected with the battery (5), and the upper cover (9) It is arranged directly above the road wheel (1) and fixedly connected to the vehicle body platform (2). Both sides of the road wheel (1) are respectively provided with Rotate the connected foot pedal (3), and the armrest (8) is connected with the sensor (7). The invention has the advantages of being foldable, small in volume, light in weight, convenient to move and easy to carry around.

Description

Foldable Lightweight Balance Walking Single Wheel Electric Vehicle

technical field

The invention relates to a single-wheel electric vehicle.

Background technique

Transportation methods such as automobiles, motorcycles, and electric bicycles powered by electric energy will become important ground transportation tools for human beings in the future. According to the definition commonly used at home and abroad, light electric vehicles refer to low-speed electric vehicles with small and medium power such as electric bicycles and electric scooters. At present, the technology of light electric vehicles such as four-wheel electric vehicles, two-wheel electric motorcycles, parallel two-wheel electric scooters, and electric bicycles at home and abroad is relatively mature, and there are many formed products in the market. But these electric vehicles have a common shortcoming, namely bulky, heavy, not easy to carry. Especially limited by the current development of battery technology, the market positioning is not accurate enough, and the advantages of light electric vehicles have not been fully utilized.

Contents of the invention

The purpose of the present invention is to provide a foldable light-mass balanced walking single-wheel electric vehicle, which can solve the problems of existing light electric vehicles that are large in size, heavy in weight, inconvenient to carry, and do not give full play to the advantages of light electric vehicles.

The present invention is made up of a traveling wheel and motor, reducer, car body platform, pedal, electrical wiring, battery, circuit board, sensor, handrail, upper cover, connecting shaft; In the wheel hub of the traveling wheel, the output end of the motor is connected to the input end of the reducer, and the output end of the reducer is fixedly connected to the spoke plate or spoke of the traveling wheel. The vehicle body platform is set on the traveling wheel and fixed to the motor shaft. connected, the cavity between the two sides of the road wheels and the vehicle body platform is equipped with a battery and a circuit board fixedly connected to the vehicle body platform, and the power input end of the motor is connected with the electrical connection wire drawn from the hollow hole of the motor shaft. The power output end of the circuit board is connected, and the power input end of the circuit board is connected with the power output end of the battery. There is a foot pedal that is rotationally connected with the vehicle body platform through a connecting shaft, the lower end of the armrest is connected with the upper end of the sensor, and the lower end of the sensor is fixedly connected with the vehicle body platform.

The present invention has the following beneficial effects: the single-wheel electric vehicle involved in the present invention has only one running wheel, the body parts such as handrails and pedals can be folded, and is powered by a lithium polymer battery with light weight and high efficiency. In addition to the advantages of convenience, environmental protection, and energy saving, it also has the following advantages: 1. It is foldable, small in size, light in weight, easy to move, and easy to carry around. This advantage is unmatched by other two-wheel or four-wheel electric vehicles. Two, the single-wheel electric vehicle of the present invention is also a powerful supplement for other vehicles. On the one hand, it can replace other means of transportation within a short-distance journey; on the other hand, due to its small size and light weight, the single-wheel electric vehicle can be carried on other means of transportation such as cars, providing you with a realizable Travel solutions compatible with long and short distances for fast moving. Three, the present invention also provides a kind of interesting exercise mode for young people. Compared with two-wheeled motorcycles, single-wheel electric vehicles require higher driving skills. The human body stands on the pallet and holds the handrail, which requires the body to have a strong balance ability. Users with high skills can not only give full play to the driving ability of the single-wheel electric vehicle, but also endow the single-wheel electric vehicle with more flexible and maneuverable characteristics.

Description of drawings

Fig. 1 is the front perspective view of the single-wheel electric vehicle of the present invention, Fig. 2 is the rear perspective view of Fig. 1 (remove upper cover 9), Fig. 3 is the perspective view after the single-wheel electric vehicle of the present invention is folded, Fig. 4 is this The front view of the folded single-wheeled electric vehicle of the invention, Fig. 5 is a top view of Fig. 4, Fig. 6 is a right side view of Fig. 4, Fig. 7 is a perspective view of the road wheel 1 (motor 52 and speed reducer 53 are housed), Fig. 8 It is the front view of the single-wheel electric vehicle of the present invention (pedal 3 is under the expanded state), Fig. 9 is the C-C sectional view of Fig. 8, Fig. 10 is the front view of armrest 8, Fig. 11 is the left side view of Fig. 10, Fig. 12 Schematic diagram of the assembly and connection structure of the armrest 8 and the sensor 7, Figure 13 is a sectional view of the sensor 7 (cut along the central axis of the rotating shaft 30); Figure 14 is a left view of Figure 13, and Figure 15 is a front view of the rotary potentiometer, Figure 16 is a top view of FIG. 15, FIG. 17 is a three-dimensional structure diagram of a Hall-type position sensor measuring principle, FIG. 18 is a three-dimensional structure diagram of a torque sensor 34, FIG. 19 is a front view of a torque sensor 34, and FIG. 20 is a left side view of FIG. 19 , Fig. 21 is a schematic diagram of the range of rotation of the handrail 8 (consistent with the direction of advancement of the road wheel 1), and Fig. 22 is a schematic diagram of the range of rotation of the handrail 8 (opposite to the direction of advancement of the road wheel 1).

Detailed ways

Specific embodiment one: this embodiment is described in conjunction with Fig. 1～Fig. The first circuit board 6, the sensor 7, the handrail 8, the upper cover 9, the first connecting shaft 10; The input end of the reducer 53 is connected by transmission, the output end of the reducer 53 is fixedly connected to the spoke plate or spoke 12 of the traveling wheel 1, the vehicle body platform 2 is set on the traveling wheel 1 and is fixedly connected to the motor shaft 13, the walking A battery 5 and a first circuit board 6 affixed to the vehicle body platform 2 are housed in the cavity between both sides of the wheel 1 and the vehicle body platform 2, and the power input end of the motor 52 is drawn through a hollow hole from the motor shaft 13. The electric wire 4 is connected with the power output end of the first circuit board 6, and the power input end of the first circuit board 6 is connected with the power output end of the battery 5. The body platform 2 is fixedly connected to cover the battery 5 and the first circuit board 6. The two sides of the walking wheel 1 are respectively provided with pedals 3 connected to the vehicle body platform 2 through the first connecting shaft 10 in rotation. The lower end of the handrail 8 is connected to the upper end of the sensor 7, the lower end of the sensor 7 is fixedly connected to the vehicle body platform 2, and the motor 52 adopts a DC motor or a DC brushless motor, wherein the DC brushless motor can have a Hall signal output for Calculate the motor and wheels (motor speed minus the reduction ratio); an external motor and reduction mechanism can also be used, fixed on the car body platform 2, and the power is transmitted to the road wheel 1 through belts and other equivalent components, thereby driving the road wheel 1 Turning, people's feet stand on the pedals 3 on both sides of the wheel, and the center acts on the central axis of the walking wheel 1, similar to the principle of a unicycle, using the human body to maintain the balance of the walking process; the battery 5 is a lithium polymer battery , Speed reducer 53 adopts one-way overrunning clutch or two-way overrunning clutch.

Specific embodiment two: present embodiment is described in conjunction with Fig. 7, and the walking wheel 1 of present embodiment is made up of wheel hub 11, spoke plate or spoke 12, rim 14; The spoke plate or the spokes 12 uniformly distributed along the circumference of the wheel rim 14 are fixedly installed between the wheel rim 14 and the wheel rim 14, and the walking wheel 1 can adopt an integral structure or a split structure. Set up in this way, the structure is simple, the use is safe and reliable, and the travel wheel 1 is driven to rotate by the speed reducer 53 . The road wheel 1 can also be purchased from outside, and the manufacturer integrates the motor 52 and the speed reducer 53 in the wheel hub 11 of the road wheel 1 . Other components and connections are the same as those in the first embodiment.

Specific Embodiment Three: This embodiment is described in conjunction with FIGS. 10 to 12. The armrest 8 of this embodiment consists of a handhold rod 15, a "T"-shaped rod 16, a connecting rod 17, a connecting member 18, a second connecting shaft 19, The locking pin 100 and the clamp 20 are composed; the holding rod 15 is composed of a metal intubation 21 and a soft sleeve 22, and the connecting member 18 is composed of a connecting socket 23 and a connecting sleeve 24, and the connecting socket 23 The bottom end surface of the connecting sleeve 24 is affixed, and the two ends of the horizontal bar 25 of the "T" shaped rod 16 are respectively inserted into one end of the metal insertion tube 21, and the other end of the metal insertion tube 21 is connected to the One end of the soft sleeve 22 is inserted, and the lower end of the "T" shaped rod 16 is installed in the inner hole of the upper end of the connecting rod 17. The lower end of the connecting rod 17 is provided with a connecting handle 26, and the connecting handle 26 is installed in the connecting socket 23 In the slot, the connection handle 26 is connected to the connection socket 23 through the second connection shaft 19, the locking pin 100, and the angle can be adjusted and locked. 24 and the sensor 7 are detachably connected by clamps 20 respectively. The handhold bar 15 not only has the handhold of the driving process, but also can be removed and pulled out to reduce the width of the handrail 8. Utilize the insertion depth of the "T"-shaped bar 16 relative to the connecting rod 17 to adjust the height of the armrest 8; utilize the rotation angle of the connecting rod 17 relative to the connecting member 18 around the second connecting shaft 19 to adjust the angle of the armrest 8 relative to the vehicle body platform 2 And the distance relative to pedal 3.

Specific embodiment four: This embodiment is described in conjunction with Fig. 1, Fig. 2 and Fig. 9, and the pedal 3 of this embodiment is made up of flat plate 27 and connecting ear 28; The connecting ear 28 is rotatably connected to the lower end of the vehicle body platform 2 through the first connecting shaft 10 . The pedal 3 is foldable, effectively reducing the width of the single-wheel electric vehicle. The pedal 3 can be folded and unfolded relative to the vehicle body platform 2. When driving, the pedal 3 is unfolded around the first connecting shaft 10 to form an angle of 90 degrees relative to the vehicle body platform 2, and through the upper surface of the flat plate 27 and the vehicle body. The lower end surface of the platform 2 is in contact with the limit to prevent the rotation angle from being too large, and to bear the acting moment formed by the human body's acting force on the pedal 3 relative to the first connecting shaft 10 . When storing and transporting, the pedal 3 is folded and stowed around the first connecting shaft 10 .

Embodiment 5: This embodiment is described in conjunction with Fig. 10, Fig. 13 and Fig. 14. The sensor 7 of this embodiment consists of a housing 29, a rotating shaft 30, a spring 31, a connecting body 32, a head 33, a torque sensor 34 and a position sensor 35; the housing 29 is fixedly connected to the vehicle body platform 2, and the housing 29 is equipped with a torque sensor 34 and a position sensor 35, and the torque sensor 34 and the head 33 are respectively located on the upper end surface and the lower end surface of the vehicle body platform 2 , the torque sensor 34 and the head 33 are fixedly connected to the vehicle body platform 2, the upper end of the torque sensor 34 is connected to the lower end of the connecting body 32 through the rotating shaft 30, and the upper end of the connecting body 32 passes through the limiting groove 51 on the upper end surface of the housing 29 Connected with the handrail 8, the position sensor 35 is fixed on the rotating shaft 30, and two springs 31 are arranged between the connecting body 32 and the torque sensor 34, and the two springs 31 are arranged symmetrically with respect to the central axis of the rotating shaft 30, and form a winding According to the rotational moment of the rotating shaft 30 , the upper end of the connecting body 32 is installed in the connecting socket 24 and detachably connected with the connecting socket 24 through the clamp 20 . Use the active force of the human body to the armrest 8 and the torque sensor 34 to control the speed, forward or backward direction of the single-wheeled electric vehicle, and the two springs enable the human body to perceive the active force of the torque sensor; Relative to the rotational angle position of the vehicle body platform 2, the position sensor 35 is used to detect and control the speed of the motor 52 . In the forward direction, the reaction force of the sensor 7 to the armrest 8 is proportional to the bending angle of the armrest 8; it is rigidly connected in the lateral direction. When the driver applies an active force (thrust) in the forward direction to the handrail 8, the tension of one spring increases and the tension of the other spring decreases, and the handrail 8 produces counterclockwise and reverse active force/moment to the driver. Conversely, when the driver applies a force (pull) in the backward direction to the armrest 8, the active force of the spring is opposite to the pull force in the forward direction, and the armrest 8 produces a clockwise and reverse force/moment to the driver. According to Hooke's law, the rotation angle of the armrest 8 is proportional to the torque exerted by the driver on it. The housing 29 covers the sensor 7 and is connected with the vehicle body platform 2 to form a rotation angle limiting mechanism for the connected body around the rotating shaft 30 to avoid plastic deformation of the elastic strain beam of the spring and the moment sensor 34 .

Specific Embodiment Six: This embodiment is described in conjunction with Fig. 14, Fig. 18-Fig. 20. The torque sensor 34 of this embodiment is composed of an elastic body strain beam 36, a bottom plate 37, a loading end 38 and four strain gauges 39; The upper end surface of the elastic body strain beam 36 is affixed to the lower end surface of the loading end 38, the lower end surface of the elastic body strain beam 36 is affixed to the upper end surface of the bottom plate 37, the elastic body strain beam 36 is a square cylinder, and four strain gauges 39 are pasted on the four sides of the elastic body strain beam 36 respectively, and the two opposite strain gauges 39 form an electric bridge circuit, which are respectively used to detect the loading moment in two directions, the loading terminal 38 and the connection body 32 The lower end is rotatably connected by a rotating shaft 30 . When the loading end bears the longitudinal (vehicle forward direction) moment T1, the resistance values of the strain gauges on the two sides of the elastic strain beam 36 parallel to the axis of the rotating shaft change, and the resistance values of the other two strain gauges remain unchanged. . When the loading end bears the lateral (perpendicular to the forward direction of the vehicle) moment T2, the resistance values of the strain gauges on the two sides of the elastic strain beam 36 perpendicular to the axis of the rotating shaft change, and the resistance values of the remaining two strain gauges constant. In this embodiment, the torque sensor 34 is made of aluminum alloy (LC4).

Embodiment 7: This embodiment is described in conjunction with FIG. 15 and FIG. 16. The position sensor 35 of this embodiment is a rotary potentiometer; the rotary potentiometer is composed of a second circuit board 40, a brush 41, and a connector 42; The second circuit board 40 is engraved with a resistance ring 43 and a conduction ring 44 from the outside to the inside, one end of the resistance ring 43 is a power supply input terminal 45, the other end of the resistance ring 43 is a ground terminal 46, and the power supply A signal output terminal 47 is provided on the conduction ring 44 between the input terminal 45 and the ground terminal 46, and a brush 41 is fixedly installed on the upper end surface of the second circuit board 40 near the outer edge, and the brush 41 passes through the connector 42 It is fixedly connected with the rotating shaft 30. In this way, the rotating shaft 30 drives the brush 41 to rotate, and the rotation position of the armrest 8 is obtained by using the output voltage of the conduction resistance ring 43 . The rotating shaft 30 drives the brush 41 to rotate relative to the second circuit board 40 through the connecting piece 32 , and different positions output different voltage values.

Embodiment 8: This embodiment is described in conjunction with FIG. 17. The position sensor 35 of this embodiment is a Hall-type absolute position sensor; the Hall-type absolute position sensor is composed of a sensor circuit board 48, a sensitive element 49, and a magnetic steel 50. The magnetic steel 50 is fixedly connected to one end of the rotating shaft 30 , the sensitive element 49 is set opposite to the magnetic steel 50 , and the sensitive element 49 is integrated on the sensor circuit board 48 . The position of the rotating shaft 30 is detected by using the angle of the magnetic field generated by the magnetic steel 50 relative to the sensitive element 49 .

The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, the principle of motion and the equivalent structural changes of the content of the description and drawings of the present invention should be included in the same way. within the patent scope of the present invention.

Claims (9)

1. A foldable light-mass balanced walking single-wheel electric vehicle, which consists of a walking wheel (1), a motor (52), a reducer (53), a vehicle body platform (2), pedals (3), electrical Wiring (4), battery (5), first circuit board (6), sensor (7), armrest (8), upper cover (9), first connecting shaft (10); it is characterized in that the motor (52) and speed reducer (53) are all installed in the wheel hub (11) of walking wheel (1), and the output end of motor (52) is connected with the input end transmission of speed reducer (53), and the speed reducer (53) The output end is fixedly connected to the spoke plate or spoke (12) of the road wheel (1), the vehicle body platform (2) is set on the road wheel (1) and fixedly connected to the motor shaft (13), and the road wheel ( The cavity between both sides of 1) and the vehicle body platform (2) is equipped with the battery (5) and the first circuit board (6) fixedly connected with the vehicle body platform (2), and the power input terminal of the motor (52) Connect with the power output end of the first circuit board (6) through the electric wire (4) drawn from the hollow hole of the motor shaft (13), the power input end of the first circuit board (6) and the power supply of the battery (5) The output end is connected, the upper cover (9) is arranged directly above the road wheel (1) and fixedly connected to the vehicle body platform (2), and the two sides of the road wheel (1) are respectively provided with (10) The foot pedal (3) that is rotatably connected with the vehicle body platform (2), the lower end of the armrest (8) is connected with the upper end of the sensor (7), and the lower end of the sensor (7) is connected with the vehicle body platform ( 2) Fixed connection. 2. The foldable light-mass balanced walking single-wheel electric vehicle according to claim 1, characterized in that the walking wheel (1) is composed of a hub (11), a web or spokes (12), and a rim (14) The hub (11) is located at the center of the rim (14), between the hub (11) and the rim (14) there are fixed webs or spokes (12) uniformly distributed along the circumference of the rim (14). 3. The foldable light-mass balanced walking single-wheel electric vehicle according to claim 1, characterized in that the handrail (8) consists of a handhold bar (15), a "T"-shaped bar (16), a connecting bar ( 17), a connecting member (18), a second connecting shaft (19), a locking pin (100), and a hoop (20); cylinder (22), the connection member (18) is composed of a connection socket (23) and a connection socket (24), the bottom end surface of the connection socket (23) is fixedly connected to the upper end surface of the connection socket (24) , the two ends of the horizontal bar (25) of the "T"-shaped bar (16) are plugged with one end of the metal intubation (21) of the holding bar (15) respectively, and the other end of the metal intubation (21) One end is plugged in with one end of the soft sleeve (22), and the lower end of the "T" shaped rod (16) is installed in the inner hole of the upper end of the connecting rod (17), and the lower end of the connecting rod (17) is provided with a connecting handle ( 26), and the connection handle (26) is contained in the slot of the connection socket (23), the connection handle (26) is connected to the connection socket (23) by the second connection shaft (19), the locking pin (100) and the rotation, The "T"-shaped rod (16) and the connecting rod (17) and between the connecting sleeve (24) and the sensor (7) are detachably connected through clamps (20). 4. The foldable lightweight balanced walking single-wheel electric vehicle according to claim 1, characterized in that the pedal (3) is composed of a flat plate (27) and connecting ears (28); the flat plate (27) The two ends of the upper end face of the car body are respectively fixedly equipped with connecting ears (28), and the said connecting ears (28) are rotatably connected with the lower end of the vehicle body platform (2) through the first connecting shaft (10). 5. The foldable lightweight balanced walking single-wheel electric vehicle according to claim 3, characterized in that the sensor (7) is composed of a housing (29), a rotating shaft (30), a spring (31), a connecting body (32 ), a head (33), a torque sensor (34) and a position sensor (35); the housing (29) is fixedly connected to the vehicle body platform (2), and the housing (29) is equipped with a torque sensor (34) and the position sensor (35), and the torque sensor (34) and the head (33) are respectively located on the upper end face and the lower end face of the car body platform (2), and the torque sensor (34) and the head (33) are connected with the car body platform (2) fixed connection, the upper end of the torque sensor (34) is connected with the lower end of the connecting body (32) through the rotation shaft (30), and the upper end of the connecting body (32) passes through the limit groove ( 51) is connected with the armrest (8), the position sensor (35) is fixed on the rotating shaft (30), and two springs (31) are housed between the connecting body (32) and the torque sensor (34), and the two springs (31) is arranged symmetrically with respect to the central axis of rotating shaft (30), and the upper end of connecting body (32) is contained in the connecting sleeve (24) and is detachably connected with connecting sleeve (24) by clamp (20). 6. The foldable lightweight balanced walking single-wheel electric vehicle according to claim 5, characterized in that the torque sensor (34) is composed of an elastic strain beam (36), a bottom plate (37), a loading end (38) and four strain gauges (39); the upper end surface of the elastic body strain beam (36) is affixed to the lower end surface of the loading end (38), and the lower end surface of the elastic body strain beam (36) is connected to the bottom plate (37) The upper end surface of the elastic body strain beam (36) is a square column, and four strain gauges (39) are respectively pasted on the four sides of the elastic body strain beam (36), and the two opposite strain gauges (39 ) constitutes an electric bridge circuit, and the loading terminal (38) is rotationally connected with the lower end of the connecting body (32) through a rotating shaft (30). 7. The foldable light-mass balanced walking single-wheel electric vehicle according to claim 5, characterized in that the position sensor (35) is a rotary potentiometer; the rotary potentiometer is composed of the second circuit board (40), the electric brush (41), connector (42); described second circuit board (40) is engraved with resistance ring (43) and conduction ring (44) from outside to inside, and one end of described resistance ring (43) is The power input terminal (45), the other end of the resistance ring (43) is a ground terminal (46), and the conduction ring (44) between the power supply input terminal (45) and the ground terminal (46) is provided with The signal output terminal (47), the upper end surface of the second circuit board (40) is fixed with a brush (41) near the outer edge, and the brush (41) is fixedly connected with the rotating shaft (30) through the connector (42) . 8. The foldable light-mass balanced walking single-wheel electric vehicle according to claim 5, characterized in that the position sensor (35) is a Hall-type absolute position sensor; the Hall-type absolute position sensor is composed of a sensor circuit board (48), a sensitive element (49), and a magnetic steel (50); the magnetic steel (50) is fixedly connected to one end of the rotating shaft (30), and the sensitive element (49) is relatively arranged with the magnetic steel (50), and is sensitive Components (49) are integrated on the sensor circuit board (48). 9. The foldable lightweight balanced walking single-wheel electric vehicle according to claim 1, characterized in that the motor (52) is a DC motor, and the reducer (53) is a one-way overrunning clutch or a two-way overrunning clutch.

Images