JP2001287665A - Electric four-wheeled vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric four-wheeled vehicle capable of supporting a stress to a car body by a frame provided in a front body and a rear body, directing right and left front wheels to right and left sides or a front side corresponding to a steering direction by an operation of handle and directing a vehicle to a desired direction of occupants. SOLUTION: A frame is constituted by a main frame part 34 forwardly/ rearwardly extending along a foot-placing floor part 22 of the above occupants and a front frame part 32 provided on a front portion of the main frame part 34 and forwardly extending at a narrower space than a right/left width of the main frame part 34. The main frame part 34 retains the foot-placing floor part 22 and a single seat 14 from below. A steering shaft support part 62 for supporting a lower end of a steering shaft 60 of a front wheel directing mechanism 64 for directing the right and left front wheels 10, 10 to a right/left direction by a steering operation of the passenger to a handle 16 is provided on the front frame part 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle front structure of an electric four-wheeled vehicle such as an electric wheelchair having a vehicle structure of a bar handle or a tiller handle type.

[0002]

2. Description of the Related Art An electric wheelchair is used when a person with weak legs moves, and a golf carry is used for moving a person on a golf course. In general, these vehicles are electric vehicles powered by a battery. It is. An example of this type of electric vehicle is shown in FIG. 12 (perspective view) and FIG. 13 (plan view).

The vehicles shown in FIGS. 12 and 13 have a structure in which front and rear wheels a and b are provided two by two, and the front two wheels a are steered by a steering wheel c. c1 rotates and the front wheel a is directed in the desired steering direction. In this case, the occupant is seated on a seat (seat) d in the rear half of the vehicle body, and a battery e is mounted below the seat d. Driven by

The front half of the vehicle body has a flat floor g on which the occupant can ride his / her feet. Further, a fender h covers the upper portion of the front wheel a as a cover body, and the fender h constitutes a tire house h1 that accommodates the front wheel a at a lower portion thereof. The fender h is located at the front of the floor g.

[0005] In some vehicles, a basket (basket) i is fixed to a handle post as necessary.

In a vehicle of the type described above, when the occupant turns the steering wheel c, the front wheels a are turned to change the direction and steer. Therefore, even when the front wheel a is steered, the front wheel a
In order not to hit the inside (the inner wall of the tire house h1), the front fender h has a large cylindrical shape occupying the front half of the vehicle body, and the left and right fenders h
Usually, the portion between them has a cylindrical shape similarly to the front fender h. The floor g is located behind the front fender h, and is flat and has a rectangular shape in a top view.

As described above, in the electric vehicle,
Since the front fender h is large, the floor g is narrow, and the place where the foot is placed is small, so that the foot may be put on the front fender h.

[0008]

However, in the conventional electric vehicle, the tire house h1
If the outer surface of the upper front fender h is used as a footrest, the normal front fender h has strength and rigidity only with a thin cover body, so if the weight of the occupant is on the footrest, etc. The front fender h may be deformed or damaged. In addition, if the rider bends with his / her foot, it is difficult for the occupant to maintain his / her posture, and the ride feeling becomes poor. On the other hand, simply increasing the thickness of the front fender to increase rigidity increases the weight of the vehicle body and increases the power consumption of the battery, thereby causing inconveniences such as shortening the mileage.

Further, in the conventional four-wheeled electric vehicle, there is no front left and right independent suspension system, and a front axle supporting the left and right front wheels is supported at the center in the vehicle width direction. There was only a structure that tried to ground the wheels by a formula (center pivot type). With such a structure, the ability of the front wheels to follow the ground is poor, and therefore, conventionally, electric vehicles have been unsatisfactory in terms of ride comfort.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. A frame provided in a front body and a rear body supports a stress on a vehicle body and operates a steering wheel in accordance with a steering direction. It is an object of the present invention to provide an electric four-wheeled vehicle capable of directing the left and right front wheels to the left or right or to the front, and capable of directing the vehicle in a desired direction of an occupant.

[0011]

In order to solve the above-mentioned problems, the present invention has the following arrangement.

According to a first aspect of the present invention, there is provided a single-seat seat for supporting a pair of left and right front wheels and a rear wheel, and seating one occupant;
An electric four-wheeled vehicle having a frame structure that supports a steering device that rotates a steering shaft by operating a steering wheel provided in front of the floor to swing a front wheel left and right through a tie rod at a lower end of the steering shaft, A main frame portion extending forward and backward along the footrest floor portion of the occupant; and a front frame portion extending forward at a front portion of the main frame portion with an interval narrower than a right and left width of the main frame portion. The main frame portion holds the footrest floor portion and the single-seat from below, and the front frame portion directs the left and right front wheels in the left-right direction by a steering operation on a steering wheel of an occupant. An electric four-wheeled vehicle provided with a steering shaft support for supporting a lower end of a steering shaft of a pointing mechanism.

According to a second aspect of the present invention, there is provided a single-seat seat for supporting a pair of left and right front wheels and a rear wheel and seating one occupant;
An electric four-wheeled vehicle having a frame structure that supports a steering device that rotates a steering shaft by operating a steering wheel provided in front of the floor to swing a front wheel left and right through a tie rod at a lower end of the steering shaft, A main frame portion extending forward and backward along the footrest floor portion of the occupant; and a front frame portion extending forward at a front portion of the main frame portion with an interval narrower than a right and left width of the main frame portion. And the main frame portion holds the footrest floor portion and the single seat from below, and the front frame portion includes a steering shaft that is rotated by a steering operation to the left and right front wheels and an occupant's steering wheel. A steering unit having a front wheel directing mechanism that converts the turning motion of the steering shaft into a left-right directional motion of the left and right front wheels, and An electric motor, wherein a lower end is supported by a steering shaft support so that a steering shaft of a rudder passes ahead of the axle of the front wheel, and a tie rod constituting a front wheel directing mechanism is disposed behind the steering shaft. It is a wheel car.

According to the present invention, the frame provided in the front body and the rear body can support the stress on the vehicle body, and can operate the steering wheel to direct the left and right front wheels to the left or right or forward according to the steering direction. The vehicle can be directed in a direction desired by the occupant.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an overall explanatory view of a vehicle body structure of an electric four-wheeled vehicle according to an embodiment of the present invention (a basket on a front portion is omitted), FIG. 2 is a side view, and FIG. 4 is a side view for explaining the structure of the front part of the vehicle body, FIG. 5 is a plan view for explaining the mounting state of the vehicle body frame and the steering unit, and FIGS. 6 and 7 are plan and side views for explaining the structure of the vehicle body frame. 8 is a detailed plan view of a main part of the floor, and FIG.
FIG. 10 is a sectional view taken along line IX, FIG. 10 is a view in the direction of arrow X in FIG. 8, and FIG. 11 is a side view of another embodiment of the electric four-wheeled vehicle.

As shown in FIGS. 1 to 3, in the electric four-wheeled vehicle according to the embodiment, the front wheels 10, 10 and the rear wheels 12, 12 are both a pair of right and left wheels, and the vehicle body is mainly a front part. It consists of a front body A and a rear body B at the rear. In the rear body B, the occupant drives alone while sitting on the single seat 14.

Further, as shown in FIG. 4, the electric four-wheeled vehicle has a front body 10,
(Steering unit) C that directs the vehicle to the left, right, or front of the vehicle. The steering unit C includes a steering shaft (steering shaft) 60 that is rotated by an occupant operating a steering wheel 16, and the steering shaft 60. A steering shaft support portion 62 that is rotatably provided at a front portion of the vehicle body, and a front wheel directing mechanism 64 that converts the turning motion of the steering shaft 60 into a directional motion of the front wheels 10, left and right or forward. A front cover (front cover) 66 that covers the steering shaft 60, the steering shaft support 62, and the front wheel directing mechanism 64, and a front cover support 68 for fixing the front cover 66 to the vehicle body.

Further, the embodiment will be described in detail.

As shown in FIGS. 1 to 3, a steering wheel (a tiller handle type) for steering the front wheels 10, 10 is provided substantially at the center and above the left and right front wheels 10, 10 at the front of the vehicle body of the electric four-wheeled vehicle. ) 16 are provided. This handle 1
Front cover 66 that covers the front body A below
The widthwise central portion sandwiched between the front wheels 10, 10 projects forward from the front wheels to cover the front end of the vehicle body, and the left and right sides are front wheels 1.
The front fenders (20, 20) are connected to front fenders (lower portions become tire houses) 20 and 20, and the upper portion is integrally formed with a front leg shield 18 standing upright.

Front fenders 20, 20 are provided on the left and right sides of the front body A so as to cover the front wheels 10, 10 and protrude upward in a substantially arc shape, respectively. The head lamp house 21a which accommodates the head lamp 21 is formed in the lower part located between the left and right front fenders 20, and the front part.

A recess 18a is formed forward and inward at the lower left and right sides of the front leg shield 18 adjacent to the front fenders 20, 20 so that the upper part of the front fender 20 is widely released. Has become.

In the front body A, a flat floor 22, which is a footrest, is formed at the center of the vehicle body from the rear side to the rear of the front leg shield 18, and the floor 22 is located between the front fenders 20, 20. The front lower portion of the front body A is formed to be hollowed forward (the front portion of the floor indicated by the reference numeral 22a) so as to be wide. Therefore, the floor 22 is widened by the area of the extended floor front part 22a, and the occupant can put his / her feet on the floor front part 22a, so that there is no margin in the footrest part and there is no trouble.

A side edge of the floor 22 is formed with a portion 22b extending rearward from the front fenders 20, 20 and projecting upward on the mountain range. With this protruding portion 22b, the occupant can prevent the foot from being shifted outward from the floor 22.

As shown in FIG. 8 and FIG.
The portion forming the rear part of the front fender 20 from the two surface portions is integrally formed. As shown in the figure, a plurality of non-slip uneven patterns 22c are formed in a horizontally long rectangle on the surface of the floor 22. And the front part of the floor 2
The front fender 20 rises in the shape of a wall from the side edge of the front fender 2a, and the protruding portion 22b of the peripheral edge of the floor 22 also rises gently. It is connected.

An upper portion of the front fender 20, which is located substantially outside the floor front portion 20a in the width direction of the vehicle, and a footrest surface portion 2 on which an occupant can put his / her feet as desired.
0f is formed. A rectangular pattern is formed obliquely to the traveling direction on the foot mounting surface portion 20f to prevent the foot from slipping. Note that reference numeral 22e in FIG.
Are screw holes through which screws are screwed when the floor 22 is fastened to the frames 32, 34, 38 and the like.

On the rear side of the front leg shield 18, the front fenders 20, 20 are steppedly raised from the front edge of the recessed portion 22 a to the front.
The steering shaft cover 72, which covers the steering shaft 60 from the rear, is slightly recessed in the center of the raised portion in the width direction of the vehicle body. It is standing up.

The rear body B is located rearward from the floor 22 and has a substantially rectangular shape as a whole, and has a case structure 26 at the front for accommodating the battery and the motor drive unit 24. At the front of the case structure 26, a cover body 26a of the battery storage portion is detachably provided.
A rear fender 28 that covers the rear wheels 12, 12 protrudes and is smoothly and continuously provided on the left and right sides of the rear of the vehicle body 6. The seat 14 on which the occupant sits is fixedly or rotatably mounted on the upper part of the case structure 26.

A frame for supporting stress on the vehicle body is provided in a front body A and a rear body B of the electric four-wheeled vehicle. In this frame, as shown in FIGS. 4 to 7, a narrow U-shaped front frame 32 is provided at the front of the vehicle body, and a wide U-shaped main frame 34 is provided at the center. Is provided. The front frame 32 is fixed to the front end of the in frame 34 by welding. Further, a rear frame 36 extends rearward from a rear portion of the main frame 34.

The front frame 32 supports a front portion of the front body A, front wheels 10, 10, a steering shaft 60, a front suspension, and the like.

That is, as a front suspension, front-wheel support frame members 74f and 74r each having a U-shape in front view are connected to both arms of the front frame 32 on the lower side surfaces of the front and rear portions of the front frame 32. It is fixed by welding. At the lower ends of the support frame bodies 74f and 74r, a connecting portion 78 for swingably supporting a swing shaft 76a at the base end of the left and right suspension arm 76.
a, a support plate portion 78b formed of a bent band member bridged over each of the frame bodies 74f and 74r, and a steering shaft support portion provided at a front portion of the plate portion 78b and rotatably supporting a lower end portion of the steering shaft 60. The suspension arm bracket 78 provided with the second bracket 78c is attached and fixed by welding.

Further, the suspension arm 76 has a bifurcated shape (a wishbone shape) having two swinging shafts 76a at each of the right and left base ends and a single end portion. At the distal end of the suspension arm 76, a front wheel bracket 76b for pivotally supporting the front wheels 10, 10 so as to be rotatable and swingable right and left is provided.

The steering shaft 60 is supported via a steering shaft support portion 62. As shown in FIGS. 4 to 9, the steering shaft support portion 62 is formed from a pipe material bent into an L-shape when viewed from the side. Left and right support pipes, the lower sides of the bent portions being welded to the front inner portion of the front frame 32 with the ends facing forward, and the upper sides of the bent portions being substantially vertically upwardly directed to the front frame 32. 62a, 62a;
A left and right reinforcing plate 62b, 62 which is a substantially triangular plate member which becomes narrower in the forward direction and connects between the front end of the upper side of the pipe 62a and the front end of the front frame 32.
b, a plate plate 62c for connecting upper end portions of the left and right support pipes 62a, 62a, and a holder 62d for fastening the steering shaft 60 together with the plate plate 62 by fastening to the plate plate 62c from behind. ing.

The lower end of the steering shaft 60 is connected to a tie rod 80 near the steering shaft support 78c of the suspension arm bracket 78.
2 is fixed.

Further, the steering shaft 60 is formed at one end thereof with an elongated hole 60a so that the steering shaft 60 can be bent at a certain angle above the position of the holder 62d (to be tiltable). The angle of the upper portion of the steering shaft 60 can be changed by changing the attachment position of one of the bolts 60b with one of the bolts 60b.

In the front wheel directing mechanism 64, the front wheel bracket 76b at the tip of the suspension arm 76 is connected to the tie rod connecting plate 82 by a tie rod 80, and the steering shaft 60 is rotated by the operation of the handle 16 by the occupant. When the tie rod connecting plate 82 swings, the front wheel bracket 76b
Swings the front wheels 10,10.

Therefore, the left and right front wheels 1 are set in accordance with the direction of rotation of the steering wheel 16 (in accordance with the steering direction of the steering wheel 16).
0, 10 can be pointed to the left, right, or forward, and the electric four-wheeled vehicle can be directed in the direction desired by the occupant.

Between the vicinity of the front wheel bracket 76b of the suspension arm 76 and the center of the fender support frame 38, a cushion unit 76c comprising a coil spring and, if necessary, a damper is interposed to improve ride comfort and running stability. I'm trying.

The reinforcing plate 62 of the steering shaft support 62
A headlamp bracket 84 for mounting and fixing the headlamp 21 is fixed to the upper part of b.

As shown in FIG. 4, the front cover support 68
A brace column 68a formed of a pipe material extending upward at a rear surface portion of the front leg shield 18, and a U-shaped lower opening for attaching a lower end of the brace column 68a to an upper portion of the reinforcing plate 62b. First bracket 68
b, and a second bracket 68c for fastening a position above the lower end of the brace column 68a to the front of the plate plate 62c.

The vehicle has a luggage storage basket 7 at its front.
The storage basket 70 has a rear surface portion fastened and fixed to the cover support portion 68 with the front cover 66 (front leg seal 18) interposed therebetween.

Here, a fender support frame 38 for supporting the load on the front fender 20 is provided on the back surface of the front fender 20. The support frame 38 is fixed to the front frame 32 and the main frame 34 by welding. That is, as shown in FIGS. 2, 3, 6, and 7, the support frame 38 includes a front portion 38a, a center portion 38b, and a rear portion 38c. The front end 38a1 of the support frame 38 is fixed to the front side of the front frame 32 by welding.
a extends upward and rearward along the lower surface of the front fender 20 from a position in contact with the fender 20. Further, it is bent outward in the left-right direction at the central portion 38b to reach the outer end of the fender 20, the rear portion 38c is bent slightly inward from near the outer end, and the rear end 38c1 is formed by the shoulder of the main frame 34. It is fixed by welding to the portion 34a.

Here, as shown in FIGS. 2 and 7, the fender supporting frame 38 has a C
, And the upper part thereof is along the rear surface of the fender 20 in a side view. Further, for example, a front portion 38a and a central portion 38b
Is divided, and the divided portion is connected by a support bracket 40 of a cushion unit of a front suspension. The support bracket 40 has a box shape with an open upper part, and the lower part 40b is closed to support the cushion unit 76c. Further, each of the separated ends of the front portion 38a and the central portion 38b of the support frame 38 is inserted into the side portion 40s and fixed by welding. Furthermore, the upper opening 40
u has a mounting brace 4 extending inward in the width direction.
0t is formed in a rectangular shape.
As shown in FIG. 8, a part of the front fender 22 that stands up from the floor 22 is placed in correspondence with a part of the front fender 22 that is closer to the inside of the footrest surface part 22f. A hole 40t1 is formed.

The support frame central portion 38b and the rear portion 38c are bent in an L-shape in plan view to form a shape that widely corresponds to the foot rest surface portion 20f on the upper surface of the fender 20. Since the fender support frame 38 is provided as described above, the support rigidity of the front fender 20 is increased. A fastening hole 38c2 is formed in the rear part 38c.

The main frame 34 has a handle 1
6, the right and left sides of the lower surface of the floor 22 extend substantially along the width of the vehicle body at the lower surface, and a rear frame 36 is fixed to the rear end and extends rearward. May frame 34
The bottom plate 34b is fixed by welding to a portion sandwiched by the U-shape and located below the floor 22.

As shown in plan view in FIG. 3, there is a floor 22 substantially at the center of the vehicle body and at the rear of the front body A. In the front body A, the central portion of the vehicle body having the floor 22 is recessed so that the side edges are recessed compared to the front and rear of the vehicle body (a concave portion 42 is formed).

That is, the side edges of the front fenders 20, 20 near the front wheels 10, 10 are the front-wheel-side maximum vehicle body width Tf.
The side edges of the rear fenders 28, 28 near the rear wheels 12, 12 are the rear-wheel-side vehicle-body-maximum width Tr. The width is smaller than both Tf and the rear-wheel-side body maximum width Tr (Tc <Tf, Tc <Tr). further,
The width Tc of the narrowest portion in the center of the vehicle body substantially matches the width Ts of the seat 14 (TsＴTc).

Therefore, when the occupant rides on the electric four-wheeled vehicle and aligns his / her feet, the feet can be placed on the floor 22.

Further, a footrest surface portion 20f is formed on the upper surface of the front fender 20 which covers the left and right front wheels 10, 10 and projects above the bottom of the floor 22, and on which the occupant can get his / her foot when riding.
Since the load supporting fender support frame 38 extends on the back surface of the footrest surface portion at 0, the support rigidity of the front fender 20 increases. Therefore, even if the occupant puts his weight on the foot, the front support fender 38
Is supported with good rigidity, so that the occupant has a sense of security and does not deform even if an unexpected load is applied to the fender 20.

Further, the support frame 38 for supporting the load is provided.
However, it is made of a pipe material and is separated at an intermediate portion in the longitudinal direction. Therefore, since each separated part of the frame member is shorter than the integral part, the bending process of the pipe material is easy, the molding process of the frame is simplified, and
When the frame 38 is fixed by welding, dimensional accuracy is easily obtained. Further, the middle portion is connected by a bracket 40 for supporting a cushion unit (suspension unit), and a brace 40t for fixing a footrest surface portion is integrally provided on the bracket 40 for supporting, so that the cushion unit 76c and the footless Face part 20f
Can be mounted at the same place, and mounting is easy. Further, since the brace 40t is provided on the support bracket 40, the mounting dimensional accuracy of the footrest surface portion 20f is easily obtained as compared with the case where the brace is provided on another member.

Further, since the suspension of the front wheels 10, 10 on the left and right sides is independent, it is possible to smoothly follow ups and downs and unevenness of the running surface (road surface, etc.) and to sufficiently reduce impacts, thereby improving riding comfort.

The floor 22 and the footrest surface 20
Since f is integrally formed and the footrest surface is fixed to the frame member, the rigidity of the fixing is increased.

FIG. 11 shows another embodiment of the electric four-wheeled vehicle of the present invention. 1 to 10 are denoted by the same reference numerals.

The electric four-wheeled vehicle shown in FIG.
In this embodiment, a golf carrier 44 for carrying luggage such as a golf bag is further provided at the rear of the vehicle body so as to protrude rearward from an electric four-wheeled vehicle similar to that shown in FIG. The golf carrier 44 comprises a frame body 44c formed of a lower plate portion 44a and an upper holding portion 44b. In this mounting structure of the carrier 44 to the vehicle body, the lower mounting frame 48 is mounted by extending the rear frame 36 and connecting the left and right back stays 46. Carrier support 5 having a triangular shape in a side view on top of rear frame 36
0 is fixed. A pipe-shaped support 52 penetrates through the cover of the rear body B from the support 50 to the upper part.
Is erected.

The lower portion of the carrier 44 is fastened to the back stay 48, and the upper mounting frame 44d protruding from the upper portion is fitted into the upper portion of the support 52, so that the carrier 44 is mounted on the vehicle body.

The other constructions and operations are the same as those shown in FIGS.
Since it is the same as the embodiment of FIG. 10, the same numbers are given and the explanation is omitted.

[0057]

As described above, according to the present invention, there is provided an electric four-wheeled vehicle, comprising: a main frame portion extending forward and backward along a footrest floor portion of the occupant; A front portion extending forward with a smaller width than the left and right width of the main frame portion at the front portion, the main frame portion holding the footrest floor portion and the single seat from below, The front frame has a steering shaft support that supports the lower end of the steering shaft of the front wheel directing mechanism that directs the left and right front wheels in the left-right direction by steering operation to the steering wheel of the occupant. In addition to supporting the stress on the vehicle body with the frame, the front left and right wheels can be directed left or right or forward by operating the steering wheel according to the steering direction. You can direct the vehicle in the desired direction of the occupant.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram of a vehicle body structure of an electric four-wheeled vehicle according to one embodiment of the present invention.

FIG. 2 is a side view of the electric four-wheeled vehicle.

FIG. 3 is a plan view of the electric four-wheeled vehicle.

FIG. 4 is a side view illustrating the structure of the front part of the vehicle body of the electric four-wheeled vehicle.

FIG. 5 is a plan view illustrating an attached state of a body frame and a steering unit of the electric four-wheeled vehicle.

FIG. 6 is a plan view illustrating a structure of a body frame of the electric four-wheeled vehicle.

FIG. 7 is a side view illustrating a structure of a body frame of the electric four-wheeled vehicle.

FIG. 8 is a detailed plan view of a main part of a floor of the electric four-wheeled vehicle.

9 is a sectional view taken along the line IX-IX in FIG.

FIG. 10 is a view in the direction of the arrow X in FIG. 8;

FIG. 11 is a side view of another embodiment of the electric four-wheeled vehicle.

FIG. 12 is a perspective view illustrating the structure of a conventional electric vehicle.

13 is a plan view of the electric vehicle shown in FIG.

[Explanation of symbols]

10,10 Front wheel 12,12 Rear wheel 14 Seat 20,20 Front fender 20f Footless surface 22 Floor 32 Front frame 34 Main frame 38 Front fender support frame 38a, 38b, 38c Front, center, rear of support frame 40 Cushion unit Supporting bracket 40t Brace 60 Steering shaft 62 Steering shaft support 64 Front wheel directing mechanism 76c Cushion unit

Claims (2)

[Claims] 1. A single seat that supports a pair of left and right front wheels and a rear wheel, and on which one occupant sits, an occupant footrest below the single seat, and a handle provided in front of the floor. An electric four-wheeled vehicle including a frame structure that supports a steering device that rotates a steering shaft to swing a front wheel left and right through a tie rod at a lower end of the steering shaft, wherein the frame is a floor portion on which the occupant's foot rests. A main frame portion extending forward and backward along the front frame portion, and a front frame portion extending forward at a front portion of the main frame portion with an interval narrower than the left and right width of the main frame portion, the main frame portion includes: The front frame portion holds the footrest floor portion and the single seat from below, and the front frame portion adjusts the left and right front wheels by a steering operation on a steering wheel of an occupant. Front-wheel-oriented mechanism steering shaft lower end electric automobile, characterized in that a steering shaft support portion for supporting of directed rightward. 2. A single seat that supports a pair of left and right front wheels and a rear wheel, and on which one occupant sits, an occupant's footrest below the single seat, and a handle provided in front of the floor. An electric four-wheeled vehicle including a frame structure that supports a steering device that rotates a steering shaft to swing a front wheel left and right through a tie rod at a lower end of the steering shaft, wherein the frame is a floor portion on which the occupant's foot rests. A main frame portion extending back and forth along the front frame portion, and a front frame portion extending forward at a front portion of the main frame portion with a narrower width than the left and right width of the main frame portion, and the main frame portion is Holding the foot rest floor portion and the single seat from below, and the front frame portion is operated by steering operation of left and right front wheels and a steering wheel of an occupant. A steering unit including a rotating steering shaft and a front wheel directing mechanism that converts the rotational motion of the steering shaft into a directional motion of the left and right front wheels in a left-right direction is provided, and the steering shaft of the steering unit is An electric four-wheeled vehicle characterized in that a lower end portion is supported by a steering shaft support portion so as to pass ahead of an axle of a front wheel, and a tie rod constituting a front wheel directing mechanism is disposed behind the steering shaft.