TWI861724B - Electric tricycle - Google Patents

Abstract

An electric tricycle includes: a frame unit; two rear wheels, which are arranged on the frame unit at intervals; a motor, which is arranged on the frame unit and drives at least one of the rear wheels; a motor controller, which is arranged on the frame unit; a battery unit, which is arranged on the frame unit and electrically connected to the motor and the motor controller and provides the power required by the motor and the motor controller; and a vehicle charger, which is arranged on the frame unit and electrically connected to the battery unit and includes a charging terminal. When the two ends of an external charging connector are electrically connected to the charging terminal and an external AC power source respectively, the vehicle charger can convert the AC power supplied by the external AC power source into DC power to supply power to the battery unit.

Description

Electric tricycle

The present invention relates to a motorcycle, in particular to an electric tricycle.

Referring to FIGS. 1 and 2 , it is known that Chinese Patent Publication No. CN110785342B discloses an electric tricycle 9, which includes a front body 90, a rear body 91, a front wheel 92 rotatably suspended on the front body 90, a left rear wheel 93L disposed on the rear body 91, a right rear wheel 93R disposed on the rear body 91, a swing mechanism 94 for swinging the front body 90 and the rear body 91 relative to each other, at least one motor 95 for driving the left rear wheel 93L and the right rear wheel 93R to rotate, a battery box 96 disposed on the rear body 91, and a battery 97 disposed in the battery box 96 and capable of providing the motor 95 with the required power.

As shown in Fig. 2, the rear end of the rear body 91 is shown in cross section. The battery box 96 has a housing 960 having a rear opening 969 and a cover member 961 that can cover the rear opening 969 in an openable and closable manner.

Since the electric tricycle 9 disclosed in the above CN110785342B patent does not have the function of charging with household AC power, when the battery 97 runs out of power, the cover member 961 of the battery box 96 must be opened to take out the battery 97 for charging, or directly replace it with another new battery with sufficient power. Since the battery 97 is large in size and heavy in weight, it is very laborious and inconvenient to take out the battery 97 from the battery box 96 for charging or replacement.

In addition, when the motorcyclist is riding the electric tricycle 9, the battery 97 for supplying power and the battery box 96 for accommodating the battery 97 are arranged in the area of the rear body 91, so the center of gravity of the entire electric tricycle 9 is biased toward the rear body 91, resulting in poor controllability of the entire vehicle.

[The problem that the invention wants to solve]

Therefore, the purpose of the present invention is to provide an electric tricycle.

[Technical means to solve the problem]

Therefore, the electric tricycle of the present invention comprises: a frame unit; two rear wheels, which are arranged on the frame unit at intervals; a motor, which is arranged on the frame unit and used to drive at least one of the rear wheels; a motor controller, which is arranged on the frame unit and electrically connected to the motor and used to control the motor; a battery unit, which is arranged on the frame unit and electrically connected to the motor and the motor controller, and provides the power required by the motor and the motor controller; and a vehicle charger, which is arranged on the frame unit and electrically connected to the battery unit and includes a charging terminal. When the two ends of an external charging connector are electrically connected to the charging terminal and an external AC power source respectively, the vehicle charger can convert the AC power supplied by the external AC power source into DC power to supply power to the battery unit.

In some embodiments of the present invention, the frame unit includes a rear frame, a front frame connected to the front of the rear frame, and a tiltable mechanism disposed between the rear frame and the front frame and used to enable the front frame to tilt left and right relative to the rear frame.

In some embodiments of the present invention, the motor and the motor controller are disposed on the rear frame.

In some embodiments of the present invention, the battery unit and the on-board charger are disposed on the front frame.

In some embodiments of the present invention, the on-board charger is located in front of the tiltable mechanism, and a length direction of the on-board charger is substantially arranged along an extension line extending forward from a tiltable axis of the tiltable mechanism.

In some embodiments of the present invention, the rear frame has a rising portion extending obliquely upward from front to rear, and a platform portion connected to the rising portion and extending rearward, and the motor is fixed to the rising portion of the rear frame.

In some embodiments of the present invention, the front frame includes a head tube, a descending portion, a pedal portion, and an ascending portion, and the vehicle-mounted charger is disposed on the pedal portion.

In some embodiments of the present invention, the vehicle charger is disposed on the lower surface of the pedal portion.

In some embodiments of the present invention, the pedal portion has a plurality of fixing members, and the vehicle charger is fixed on the fixing members.

In some embodiments of the present invention, a seat cushion is further included, the battery unit is disposed below the seat cushion, and a portion of the vehicle charger is located below the battery unit.

[Effect of the invention]

The utility model has the following effects: (a) the electric tricycle of the present invention has the on-board charger installed on the frame unit, so when the battery unit needs to be charged, it is convenient to charge the battery by connecting the two ends of the external charging connector to the charging end of the on-board charger and the external AC power source respectively, without the disadvantage of the Chinese patent CN110785342B that the battery needs to be taken out for charging or replacement; (b) the on-board charger and the battery unit are both installed on the front of the vehicle. (c) the on-board charger is fixed on the fixing parts on the lower surface of the pedal part, so the complete storage space above the pedal part can be reserved; (d) a part of the on-board charger is located below the battery unit, so the length of the wire can be effectively shortened, reducing the voltage drop caused by the wire resistance.

3 and 4 , an embodiment of the electric tricycle of the present invention comprises a frame unit 2, a seat pad 6 disposed on the frame unit 2, two rear wheels 71 disposed on the frame unit 2 at intervals, a front wheel 72, a motor 36, a motor controller 37, a battery unit 38, and a vehicle charger 8 and other components.

In this embodiment, the frame unit 2 includes a rear frame 21, a front frame 22 connected to the front of the rear frame 21, and a tilting mechanism 23 disposed between the rear frame 21 and the front frame 22 and used to enable the front frame 22 to tilt left and right relative to the rear frame 21.

In this embodiment, the rear frame 21 has a rising portion 211 extending obliquely upward from front to rear, and a platform portion 212 connected to the rising portion 211 and extending rearward. The front frame 22 includes a head tube 221, a descending portion 222, a pedal portion 223 having a plurality of fixing members 2231, and a rising portion 224.

The motor 36 is disposed on the frame unit 2 and is used to drive at least one of the rear wheels 71. The motor controller 37 is disposed on the frame unit 2 and is electrically connected to the motor 36 and is used to control the motor 36. The motor 36 and the motor controller 37 are disposed on the rear frame 21, and in particular, in this embodiment, the motor 36 is disposed on the rising portion 211 of the rear frame 21.

The battery unit 38 is disposed on the frame unit 2, and is electrically connected to the motor 36 and the motor controller 37, and provides the power required by the motor 36 and the motor controller 37. In this embodiment, the battery unit 38 is disposed on the front frame 22, and is located below the seat cushion 6.

The vehicle charger 8 is disposed on the frame unit 2 and electrically connected to the battery unit 38, and includes a charging terminal 81. When two ends of an external charging connector 11 are electrically connected to the charging terminal 81 of the vehicle charger 8 and an external AC power source 12, respectively, the vehicle charger 8 can convert the AC power supplied by the external AC power source 12 into DC power to supply power to the battery unit 38.

In this embodiment, since the battery unit 38 needs to be charged with a DC current, the core function of the vehicle charger 8 is to receive the AC rectified power input from the external AC power source 12 and convert it into a DC charging voltage suitable for the battery unit 38.

The vehicle charger 8 is disposed on the front frame 22 and on the pedal portion 223. In this embodiment, the vehicle charger 8 is disposed on the lower surface of the pedal portion 223 and is particularly fixed on the fixing members 2231 of the pedal portion 223.

As shown in FIG3 , in this embodiment, a portion of the vehicle charger 8 is located below the battery unit 38. In addition, the vehicle charger 8 is located in front of the tilting mechanism 23, and a length direction L of the vehicle charger is substantially arranged along an extension line extending forward from a tilting axis T of the tilting mechanism 23.

In summary, the electric tricycle of the present invention has at least the following advantages and effects: (a) Since the on-board charger 8 is arranged on the frame unit 2, when the battery unit 38 needs to be charged, the two ends of the external charging connector 11 are electrically connected to the charging end 81 of the on-board charger 8 and the external AC power source 12 respectively, so that the battery can be charged conveniently without the disadvantage of the Chinese patent CN110785342B that the battery needs to be taken out for charging or replacement; (b) The on-board charger 8 and the battery unit 38 are both arranged on the front frame. 22, so the center of gravity of the whole vehicle is moved forward and balanced, so that the controllability of the whole vehicle is extremely good, and there will be no disadvantage of the whole vehicle center of gravity being biased towards the rear body of the vehicle as in the Chinese patent CN110785342B, which leads to poor controllability of the whole vehicle; (c) the vehicle charger 8 is fixed on the fixing members 2231 on the lower surface of the pedal part 223, so the complete storage space above the pedal part 223 can be retained; (d) a part of the vehicle charger 8 is located below the battery unit 38, so the length of the wire can be effectively shortened, and the voltage drop caused by the wire resistance can be reduced; therefore, the purpose of the present invention can be achieved.

However, the above is only an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the present patent.

11···· External charging connector 12··· External AC power supply 2····· Frame unit 21··· Rear frame 211·· Rising part 212·· Platform part 22··· Front frame 221·· Head tube 222·· Lowering part 223·· Footrest part 2231· Fixing part 224·· Rising part 23··· Tilt mechanism 36··· Motor 37··· Motor controller 38··· Battery unit 6····· Seat 71··· Rear wheel 72··· Front wheel 8····· Car charger 81··· Charging terminal L····· Length direction T····· Tilt axis

Other features and effects of the present invention will be clearly presented in the implementation method with reference to the drawings, wherein: FIG. 1 is a side view illustrating the known electric tricycle disclosed in the Chinese patent publication No. CN110785342B; FIG. 2 is a partial cross-sectional view illustrating the rear body of the known electric tricycle of the CN110785342B patent, wherein the rear end of the rear body is presented in cross-section; FIG. 3 is a left side view illustrating an embodiment of the electric tricycle of the present invention; and FIG. 4 is a top view illustrating the embodiment.

11…..External charging connector 12…..External AC power supply 2…Frame unit 21…..Rear frame 211….Rising part 212….Platform part 22…..Front frame 221….Head pipe 222….Descending part 223….Pedal part 2231…Mounting part 224….Rising part 23…..Tilt mechanism 36…..Motor 37…..Motor controller 38…..Battery unit 6…Seat 71…..Rear wheel 72…..Front wheel 8…Onboard charger 81…..Charging terminal L…Length direction T…Tilt axis

Claims (8)

An electric tricycle comprises: a frame unit including a rear frame, a front frame connected to the front of the rear frame, and a tilting mechanism arranged between the rear frame and the front frame and used to enable the front frame to tilt left and right relative to the rear frame; two rear wheels arranged on the frame unit at intervals; a motor arranged on the frame unit and used to drive at least one of the rear wheels; a motor controller arranged on the frame unit and electrically connected to the motor and used to control the motor; a A battery unit is arranged on the front frame of the frame unit, and is electrically connected to the motor and the motor controller, and provides the power required by the motor and the motor controller; and an on-board charger is arranged on the front frame of the frame unit, and is electrically connected to the battery unit, and includes a charging terminal, wherein when two ends of an external charging connector are electrically connected to the charging terminal and an external AC power source respectively, the on-board charger can convert the AC power supplied by the external AC power source into DC power to supply power to the battery unit. The electric tricycle as described in claim 1, wherein the motor and the motor controller are arranged on the rear frame. The electric tricycle as described in claim 1, wherein the on-board charger is located in front of the tilting mechanism, and a length direction of the on-board charger is arranged substantially along an extension line extending forward from a tilting axis of the tilting mechanism. The electric tricycle as described in claim 1, wherein the rear frame has a rising portion extending upwardly obliquely from front to back, and a platform portion connected to the rising portion and extending backward, and the motor is fixed to the rising portion of the rear frame. The electric tricycle as described in claim 1, wherein the front frame includes a head tube, a descending portion, a pedal portion, and an ascending portion, and the vehicle-mounted charger is disposed on the pedal portion. The electric tricycle as described in claim 5, wherein the on-board charger is disposed on the lower surface of the pedal portion. The electric tricycle as described in claim 6, wherein the pedal portion has a plurality of fixing parts, and the vehicle charger is fixed on the fixing parts. The electric tricycle as described in claim 6 further includes a seat cushion, the battery unit is arranged below the seat cushion, and a part of the on-board charger is located below the battery unit.

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