JP2005132128A - Compact standing ride type electric-driven vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact standing ride type electric-driven vehicle in which a large cargo bed can be provided without increasing the size of a vehicle body, the center of gravity can be set low, and an occupant can easily gets on/gets off the vehicle. <P>SOLUTION: In the electric-driven vehicle 10 which is driven by an occupant in a standing ride manner on a step 37, the step 37 is arranged on a front portion of the vehicle, and a cargo bed 23 is arranged behind the step 37 and above an axle 13a of a rear wheel 13. A pair of right and left main frames 29 are arranged so that at least a part of a portion located between the front and rear wheels 11 and 13 in side view of the vehicle side is located below the axles 11a and 13a of the front and rear wheels 11 and 13, the step 37 is arranged on the main frame 29a located below the axles 11a and 13a of the front and rear wheels 11 and 13, and a battery 27 is arranged in a space between the main frame 29a located below the axles 11a and 13a of the front and rear wheels 11 and 13 and the cargo bed 23. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a small electric vehicle having a step in which an occupant stands and drives on the front side of a vehicle and has a loading platform on which a load is placed on the rear side of the vehicle.

  2. Description of the Related Art Conventionally, there are a number of electric vehicles that are used for small-port transportation for carrying a relatively short distance by simply loading various kinds of luggage (for example, see Patent Document 1 below). .

  In such an electric vehicle, a travel device such as a motor necessary for travel is disposed, and a base body portion on which a handle is disposed is provided in front of the vehicle, and a battery storage portion in which a battery is stored is provided after the base body portion. In addition, a fork including a driving unit where an occupant gets on the rear side of the battery storage unit to operate the electric vehicle and a loading platform for placing a load is provided. Here, the driving part is fixed on the fork.

  In order to transport the load by this electric vehicle, the load is placed on the fork, the occupant gets on the driving unit fixed on the fork, and operates by operating the handle disposed on the base unit. It was done.

Here, traveling equipment, batteries, etc. are concentrated in the vicinity of the front wheels, and the base body and battery housing are configured vertically, so that the loading platform on the rear wheel side is lowered to facilitate loading and unloading of luggage. Or the vehicle is downsized.
JP 2002-68686 A

  In such a conventional electric vehicle, since the vertical base portion having the traveling device, the vertical battery housing portion, and the like are positioned on the vehicle front side from the driving portion, the longitudinal length of the vehicle body and the driving portion is constant. Assuming that the space for placing the base body, the battery accommodating portion, the driving portion, and the fork luggage is arranged in the front-rear direction, there is a problem that the space for placing the fork luggage tends to be narrow. In order to increase the space for loading the luggage, the car body had to be enlarged accordingly.

  Therefore, an object of the present invention is to provide a small stand-up electric vehicle capable of providing a large cargo bed without increasing the size of the vehicle body and lowering the center of gravity.

  The invention according to claim 1, which solves the above-mentioned problem, is a small standing-ride type electric vehicle that is operated in a state where an occupant stands on a step, and the step is disposed at the front of the vehicle, and the rear of the step. And a pair of left and right pairs such that a loading platform is disposed above the axle of the rear wheel and at least a part of a portion located between the front and rear wheels in a side view of the vehicle is located below the axle of the front and rear wheels. A main frame is disposed, and the step is disposed in the main frame located below the front and rear wheel axles, and in a space between the main frame located below the front and rear axles and the loading platform. A battery is provided.

  The invention according to claim 2 is the small stand-up electric vehicle according to claim 1, wherein a back frame that supports a back is disposed between the step and the loading platform, and a lower end of the back frame. A portion is fixed to the main frame, and an intermediate portion of the backrest frame is fixed to a front portion of the cargo frame that supports the cargo bed.

  According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, a motor for driving the rear wheel, a speed reduction device for reducing the rotation of the motor, and a differential coupled to the speed reduction device A drive unit in which the apparatus is unitized is provided, the drive unit is tilted forward in a vehicle side view, and the battery is disposed in front of the drive unit.

  According to the first aspect of the present invention, the step is disposed at a position located below the front and rear wheel axles of the main frame, and the loading platform is disposed above the rear wheel axle behind the step, Since the battery is disposed in the space between the main frame and the loading platform, the space above the battery can be used as the loading space for the loading platform, and sufficient loading space for the loading platform can be secured without increasing the size of the vehicle. it can. In addition, since a heavy battery is disposed in a space between the main frame and the loading platform and located below the front and rear axles of the main frame, the center of gravity of the vehicle can be lowered. In addition, since the step in which the occupant stands is disposed at a portion located below the front and rear axles of the main frame, the center of gravity can be further lowered, and the occupant can easily get on and off.

  According to the second aspect of the present invention, since the lower end portion of the backrest frame that supports the backrest is fixed to the main frame, and the intermediate portion is connected to the front portion of the cargo bed frame, the backrest frame and the cargo bed frame Can be firmly supported to each other, and the strength of each can be further improved.

  According to the third aspect of the present invention, the motor, the speed reducer, and the differential gear are unitized to provide a drive unit, and the drive unit is tilted forward so that the motor is positioned on the front side of the rear wheel. Therefore, the loading platform can be arranged lower. And since the battery was arrange | positioned ahead of this drive part, a drive part and a battery can be arrange | positioned in the position which adjoined, and these weights can be concentrated.

  Embodiments of the present invention will be described below.

  1 to 4 show an electric vehicle according to this embodiment.

  In the figure, reference numeral 10 denotes a small standing electric vehicle that can be operated in a state where an occupant 5 is standing, and includes a vehicle body 15 supported by a pair of front wheels 11 and a pair of rear wheels 13. A frame portion 17 extending in the vehicle front-rear direction is provided.

  A steering portion 19 for steering the front wheels 11 is disposed in front of the frame portion 17, and a riding portion 21 is provided adjacent to the rear of the steering portion 19. A loading platform 23 is provided on the upper portion of the frame portion 17 behind the riding portion 21, and a driving unit 25 and a battery 27 for driving the rear wheel 13 are disposed below the loading platform 23.

  As shown in FIGS. 1, 2 and 4, the frame portion 17 includes a main frame 29 extending in the vehicle front-rear direction and provided in a pair on the left and right sides in the vehicle width direction. A large number of support frames 30 and a loading frame 31 fixed to the support frame 30 are provided.

  The main frame 29 is a frame lower portion 29a that is disposed below the axle 11a of the front wheel 11 and the axle 13a of the rear wheel 13 in a range from the front wheel 11 side to the vicinity of the rear wheel 13 in the vehicle side view. . The rear side of the frame lower portion 29a of the main frame 29 is disposed above the axle 13a of the rear wheel 13, and the axle 13a of the rear wheel 13 is attached.

  The loading frame 31 is formed in a rectangular shape corresponding to the loading platform 23 from the vertical frame 31a and the horizontal frame 31b, and the loading platform 23 is supported by the support frame 30 at a height that can be disposed above the axle 13a of the rear wheel 13. Has been. Here, the height is such that the loading platform 23 can be disposed above the top portion 13 b of the rear wheel 13.

  As shown in FIGS. 1 to 4, the steering unit 19 includes a steering mechanism 12 for the front wheels 11, a steering shaft housing 33 that rotatably supports a steering shaft (not shown) connected to the steering mechanism 12, and a steering shaft. And a handle 35 disposed at the upper end of the. The steering shaft housing portion 33 and the handle 35 are disposed at substantially the center in the vehicle width direction.

  This steering mechanism 12 is fixed to the lower end of a steering shaft (not shown) and can be rotated, a pair of left and right links 12b parallel to the axle 11a from the rotating arm 12a, and the link 12b. A pivotable bracket 12c that is connected and rotatably supports the front wheel 11 is provided. The front wheel 11 can be steered via the steering mechanism 12 by turning the handle 35.

  A brake lever 34 and an accelerator lever 36 are disposed on the left and right of the handle 35, and an illumination device 38 capable of irradiating the front is disposed in the steering shaft housing portion 33.

  As shown in FIGS. 1 and 2, the riding portion 21 has a flat step 37 for riding the occupant 5 fixed to the frame lower portion 29 a of the main frame 29, and a backrest 39 is disposed behind the step 37. Has been. The backrest 39 is fixed to a backrest frame 41 protruding upward from the frame portion 17. The backrest frame 41 is attached by fixing the lower end portion 41 a to the main frame 29 and fixing the intermediate portion 41 b to the front portion of the cargo bed frame 31.

  As shown in FIGS. 1 to 3, the loading platform 23 is composed of a substantially rectangular plate-like body disposed on the loading frame 31, and has a flat mounting surface with a full vehicle width. Further, the loading platform 23 covers the drive unit 25, the battery 27, the rear wheel 13, and the upper side of the axle 13a.

  As shown in FIG. 1, the loading platform 23 is rotatably fixed by a hinge 43 attached to a loading platform frame 31 at the rear end 10 a of the vehicle, and the loading platform 23 is rotated upward by the hinge 43. And the drive part 25, the battery 27, the rear wheel 13, and its axle 13a which are arrange | positioned at the lower part of the loading platform 23 of the vehicle body 15 are comprised.

  Further, a stop lamp 45 is disposed on the rear side of the vehicle in the loading frame 31 at the rear end 10a of the vehicle.

  The drive unit 25 disposed below the loading platform 23 includes a motor 47 for driving the axle 13 a of the rear wheel 13, a reduction gear 49 for reducing the rotation of the motor 47, and a differential gear connected to the reduction gear 49. 51, and these are integrally coupled to form a unit.

  In such a drive unit 25, the motor 47, the reduction gear 49, and the differential device 51 are arranged in order from the front side in a vehicle side view, and are arranged to be tilted substantially horizontally toward the vehicle front side. The frame 29 is fixed to the frame lower portion 29a and the loading platform 23 using a bracket 53 or the like.

  A battery 27 is disposed on the vehicle front side of the drive unit 25 and is fixed to the battery mounting plate 55 in a state of being housed in a space between the frame lower portion 29a of the main frame 29 and the loading platform 23. Has been.

  A controller 57 that performs various controls such as a current supplied from the battery 27 to the motor 47 of the drive unit 25 is fixed near the drive unit 25 at the bottom of the loading platform 23.

  In order to carry out the small-mouth conveyance by the electric vehicle 10 having such a configuration, the luggage is placed on the placing surface of the loading platform 23, the occupant 5 gets on the step 37 of the riding portion 21, and the handle 35 of the steering portion 19 is placed. And it can carry out by operating each lever 34,36.

  According to the electric vehicle 10 configured as described above, the step 37 is disposed in the frame lower portion 29a located below the axle 11a of the front wheel 11 and the axle 13a of the rear wheel 13 of the main frame 29, and The loading platform 23 is disposed behind the axle 13a of the rear wheel 13 behind the step 37, and the battery 27 is disposed in the space between the frame lower portion 29a of the main frame 29 and the loading platform 23. The loading platform 23 is disposed on the battery 27, and the upper portion of the battery 27 can also be used as a mounting surface. Therefore, it is possible to secure a large space on the loading surface of the loading platform 23, and it is possible to form a larger arrangement space without increasing the size in the front-rear direction or the left-right direction as compared with the conventional electric vehicle. is there.

  At the same time, a heavy battery 27 is disposed in the space between the main frame 29 and the loading platform 23 at the frame lower portion 29a of the main frame 29 located below the axle 11a of the front wheel 11 and the axle 13a of the rear wheel 13. Therefore, the center of gravity of the electric vehicle 10 can be lowered.

  Moreover, since the step 37 of the riding portion 21 is disposed in the frame lower portion 29a of the main frame 29 located below the axle 11a of the front wheel 11 and the axle 13a of the rear wheel 13, the riding position of the occupant 5 is low, The center of gravity can be further lowered, and the ground height can be remarkably lowered as compared with the prior art, so that the passenger 5 can easily get on and off.

  In addition, since the backrest frame 41 that supports the backrest 39 is connected to the front portion of the cargo bed frame 31 disposed above the main frame 29, the backrest frame 41 and the cargo bed frame 31 are firmly attached to each other. It can support and reinforce and can improve each intensity | strength more.

  Furthermore, since the drive unit 25 in which the motor 47, the speed reduction device 49, and the differential device 51 are unitized is disposed to be tilted toward the vehicle front side, the loading platform 23 can be disposed lower. In addition, since the battery 27 is disposed in front of the drive unit 25 and the drive unit 25 and the battery 27 are brought close to each other, the weights thereof can be concentrated, and the steering stability during traveling can be easily improved. .

  In addition, since the heavy parts such as the drive unit 25 and the battery 27 are not arranged on the front side of the vehicle, the load applied to the front wheels 11 is small, and the steering force of the handle 35 can be reduced. Therefore, the operability is good and the structure of the steering unit 19 can be simplified and can be manufactured at low cost.

  Further, in the electric vehicle 10, the rear wheel 13 is widened so that it can withstand a larger load, and the tire diameter of the rear wheel 13 is relatively small. Therefore, the loading platform 23 having a flat mounting surface is provided. Even if it arranges above rear wheel 13, a loading platform can be arranged in a low position. Therefore, workability for loading and unloading luggage is good.

  In the above embodiment, the front wheel 11 and the rear wheel 13 have substantially the same tire diameter. However, the wheel diameter can be appropriately selected according to the use environment, and the rear wheel has a smaller tire diameter. By doing so, it is possible to further lower the loading platform 23.

  In the above description, the drive unit 25 is tilted substantially horizontally and fixed to the front side. However, the drive unit 25 can be tilted obliquely, and further, can be tilted to the vehicle rear side.

  If the drive unit 25 is tilted toward the vehicle rear side, the space between the axle 13a of the rear wheel 13 and the drive unit 25 and the riding unit 21 can be widened, and the number of batteries 27 that can be disposed below the loading platform 23. Can be more.

  Furthermore, in the above description, one brake lever 34 is disposed only at one end of the handle 35, but brake levers 34 and 34 may be provided at both ends of the handle 35, respectively. In that case, for example, the accelerator lever 36 may be disposed on the vehicle rear side of one end of the handle 35.

  Further, in the above description, the hinge 43 that fixes the loading platform 23 so as to be rotatable is provided on the rear end 10a side of the vehicle. However, the hinge 43 may be provided at other positions such as the vehicle side surface and the front side.

1 is a side view of an electric vehicle according to an embodiment of the present invention. It is a side view which shows the electric vehicle of embodiment of this invention and shows a part of lower part of a loading platform in a cross section. It is a top view of the electric vehicle of embodiment of this invention. It is a top view which shows the lower part of the electric vehicle of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electric vehicle 11 Front wheel 13 Rear wheel 11a, 13a Axle 15 Car body 17 Frame part 19 Steering part 21 Riding part 23 Loading platform 25 Battery drive part 27 Battery 29 Main frame 29a Frame lower part 31 Frame for loading platform 37 Step 39 Backrest 41 Backrest frame 47 Motor 49 Reduction gear 51 Differential

Claims (3)

A small standing electric vehicle that operates with a passenger standing on a step,
The step is arranged at the front of the vehicle, and a loading platform is arranged behind the step and above the axle of the rear wheel,
A pair of left and right main frames are arranged so that at least a part of a portion located between the front and rear wheels in a side view of the vehicle is located below the axle of the front and rear wheels,
While disposing the step on the main frame located below the axle of the front and rear wheels,
A small standing electric vehicle characterized in that a battery is disposed in a space between the main frame and the cargo bed located below the axles of the front and rear wheels. A small standing electric vehicle according to claim 1,
A backrest frame that supports a backrest is disposed between the step and the loading platform, a lower end portion of the backrest frame is fixed to the main frame, and an intermediate portion of the backrest frame is supported by the loading platform frame that supports the loading platform. A small standing type vehicle characterized by being fixed to the front. A small standing electric vehicle according to claim 1 or 2,
A drive unit is provided in which a motor that drives the rear wheel, a speed reduction device that decelerates rotation of the motor, and a differential gear connected to the speed reduction device are provided as a unit, and the motor is the rear when viewed from the side of the vehicle. A small standing electric vehicle characterized in that the drive unit is tilted forward and disposed so as to be positioned in front of the wheel, and the battery is disposed in front of the drive unit.

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