JP2011110940A - Simple automotive vehicle made of synthetic resin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple vehicle preventing loss of easy entrance even when the height of a side sill is slightly increased, and reducing an increase in the frontal projected area of the vehicle as much as possible. <P>SOLUTION: A substantially container-shaped under-carriage 15 is provided, with its upper side opened while synthetic resin-made side sills 22 are arranged with a space therebetween on both sides in the width direction of a floor member 21. A window frame member 16 is attachably/detachably fixed to a front upper part of the under-carriage 15, and an entrance door 17 is mounted on a rear upper part in a backwardly retractable manner. An occupant can stand up while the entrance door is backwardly retracted, and the occupant can easily enter the vehicle across the side sill even when it is high. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a simple self-propelled vehicle that is driven by an engine or an electric motor and travels with an occupant, such as a motorbike with a vehicle compartment, and in particular, an upper structure supported by a chassis and a chassis ( The body) is made of fiber-reinforced synthetic resin (hereinafter referred to as FRP) instead of conventional steel.

Conventionally, in order to reduce the weight of a vehicle, a chassis that supports front and rear wheels is made of a steel pipe, and a passenger compartment made of FRP is supported on the vehicle. However, although a vehicle having a chassis made of steel pipes is light, it is difficult to obtain energy efficiency that has been required in recent years for vehicles that run on power.

In order to improve the energy efficiency of the vehicle, it is required not only to reduce the weight but also to adopt a form with less running resistance of the vehicle. To achieve this, the front projection area should be reduced as much as possible. It is necessary to minimize the air resistance. Therefore, it is preferable to reduce the area of the front surface to one passenger (Patent Document 1).

However, even if the material of the chassis is changed from steel to FRP, it is necessary to increase the cross-sectional area under load or to change the section modulus in order to have strength and rigidity comparable to the chassis made of steel. It is not always easy.

The reason is that if the cross-sectional shape of the chassis is increased to increase the strength, the position of the body placed on the upper part becomes higher, the center of gravity becomes higher, and the running becomes unstable. Conventional steel passenger cars also have such problems. To solve this problem, the chassis and body are integrated to form a so-called monocoque body, with a strong front and back method on the lower surface of the passenger door. The so-called side sill is arranged.

Therefore, if this structure is also applied to a simple FRP vehicle to obtain sufficient strength, the height of the side sill from the floor becomes too large, and it is possible to get on and off with a normal chair-shaped seat that rides with both feet together There is inconvenience.

JP 2009-179129 A

The problem to be solved by the present invention is that a simple vehicle in which the ease of getting on and off is not lost even if the height of the side sill is somewhat high and the increase in the front projection area of the vehicle is minimized. There is to get.

In the present invention, an outer shell plate made of a synthetic resin that forms an outer surface of a vehicle and an inner surface plate that forms an inner surface of a passenger compartment are disposed facing each other with their end portions facing each other. Bending and forming side sills that are substantially cylindrical on both sides in the width direction of the floor member, connecting the front and back of both side sills with a rigid connecting member that extends in the width direction, forming a substantially container-like chassis that opens upward, The main feature is that the window frame member is detachably fixed above the front part of the chassis, and the passenger door is attached above the rear part so that it can be moved backward.

The simple vehicle made of synthetic resin according to the present invention is configured to easily stand up on the floor by retracting the passenger door disposed above the floor to the rear, so even if the height of the side sill is somewhat high, There is an effect that it is possible to easily get over and get over this. Moreover, if the seat installed on the floor is straddled, the passenger can easily move in the front-rear direction, so getting on and off is further facilitated.

The side sill that forms the chassis is made up of an outer shell plate and an inner surface plate made of synthetic resin, so if you insert and fix a cylindrical wheel support cylinder with through holes on both plates, the side sill Although it is made of synthetic resin, the wheel can be supported with high rigidity. Further, since the side sill becomes a part of the passenger compartment or the outer surface, the number of parts at the lower part of the vehicle body is small, which is effective in reducing the weight of the vehicle.

The chassis is composed of the inner frame of the container and the outer frame made approximately similar to the inner frame, so it is easy to manufacture despite its relatively complex shape. If a foam material is interposed between the frame and the outer frame, there is an effect that the inner frame and the outer frame can be bonded without causing interference even if there is a shape error. Further, since the foam material is present, there is an effect that resonance of noise in the hollow side sill is prevented.

It is an external view of the synthetic resin simple vehicle which is one Example of this invention. It is the side view. It is a top view which fractures | ruptures and shows a part of the chassis part. It is IV-IV sectional drawing in FIG. It is VV sectional drawing in FIG. It is a fragmentary top view which expands and shows the principal part in FIG. It is an external view of each part which disassembles and shows parts made of synthetic resin. It is a top view equivalent to FIG. 3 which shows a modification.

The illustrated embodiment of the present invention will be described below. 1 and 2, reference numeral 10 denotes a simple vehicle according to the present invention, and the simple vehicle 10 has a chassis 15 for supporting the front wheels 11 and the rear wheels 12. The simple vehicle 10 has a window frame member 16 removably attached to the front upper portion of the chassis 15 and a passenger door 17 attached to the rear upper portion so as to be able to move backward.

Therefore, the space surrounded by the chassis 15, the window frame member 16, and the passenger door 17 becomes a passenger compartment 18 where the passenger sits, and the passenger gets on and off between the window frame member 16 when the passenger door 17 is moved rearward. This is done from the space for getting on and off.

The window frame member 16 is formed by molding FRP, and is detachably fixed to the chassis 15 for easy maintenance. A transparent window 16a is attached to the window frame member 16, and the transparent window is made thin and lightweight by a transparent synthetic resin such as acrylic or polycarbonate. Reference numeral 16b is a headlamp support frame, and 16c is a direction indicator lamp.

As shown in FIGS. 3 and 4, the chassis 15 includes side sills 22, 22 provided on both sides in the width direction of the floor member 21, a rear rear connecting member 23 that connects the side sills 22, 22, and a front part The front connection member 24 forms a substantially rectangular container shape in plan view.

As shown in FIG. 7, the vehicle includes an outer wall member A provided on two opposite sides of the outer shell plate 22 a and a floor plate member B having an inner plate 22 b provided on two opposite sides of the floor member 21. Two members having a size close to the floor surface are overlapped on the inside and outside, and they are bonded to each other through a foam material 22e so as not to be separated.

As shown in FIG. 5, the two members A and B are bonded to the lower surface of the floor member 21 at the end 22c by bending the lower end portion of the outer shell plate 22a toward the center of the vehicle. The upper end of the inner surface plate 22b is bent outward and is bonded to the back surface of the outer shell plate 22a at the portion of the adhesive margin 22d.

The cross-sectional shapes of the side sills 22 and 22 thus obtained are such that the outer shell plate 22a forming the lower outer surface of the vehicle and the inner plate 22b forming the inner surface of the passenger compartment 18 face each other with a predetermined interval. Edge portions of the plate 22a and the inner surface plate 22b are bent toward each other, and a substantially rectangular space whose cross-sectional shape is long in the vertical direction is formed between the plates 22a and 22b.

Note that the front connecting member 24 is not an essential component of the chassis 15, and as shown in FIG. 8, the front portions of the side sills 22 and 22 are directly inwardly curved, that is, curved in an arc toward the center of the vehicle. It is also possible to omit by connecting. Moreover, as shown in FIG. 6, when the wheel support cylinder 25 is bridged over the side sills 22 and 22 on both sides, it is not necessary to arrange the front connection member 24 side by side, and only the wheel support cylinder 25 is used. It ’s enough.

As shown in FIG. 4, the cross-sections of both connecting members 23 and 24 are such that the front connecting member 24 is constituted by a front plate 24a and a front inner plate 22b forming a part of the outer shell plate 22a. The member 23 is formed into a substantially quadrangular columnar shape that is long in the vertical direction by the rear surface plate 23a and the rear inner surface plate 22b forming a part of the outer shell plate 22a, and acts in the vertical direction together with the side sills 22 and 22. It has sufficient strength against force.

The side sills 22 and 22 and the rear connecting member 23 are provided with a wheel support cylinder 25 for supporting a wheel support arm 26 by a pivot 27. The wheel support cylinder 25 penetrates the side sill 22 or the rear connection member 23 in the thickness direction, is bonded to the two wall surfaces thereof and is firmly supported by the structure of the both-end support beams, and at least one end thereof is A wheel support arm 26 that protrudes outward from the wall surface and is rotatably supported via a pivot 27 is supported by the protruding portion.

In this embodiment, two examples of the wheel support arm 26 are shown, one of which is shown in FIGS. 3 and 4 in order for the wheel support arm 26 to protect the chain connecting the electric motor 14 and the rear axle 26a. This is the case of the chain case. In this example, the wheel support cylinder 25 has a substantially square cylinder with a flanged cross section, and the outer end is closed. The chain case is swingably supported by a pivot 27 supported in the width direction and horizontally in the vicinity of the outer end, and when the motor 14 is driven, a thrust force that the vehicle moves forward via the pivot 27 is generated. It is transmitted to the chassis 15.

The second is a case where the wheel support arm 26 is a known swing arm that extends outward in the width direction of the vehicle, as shown in FIG. In this example, the wheel support cylinder 25 is bridged between the side sills 22 on both sides and has a cylindrical shape with a substantially square cross section and open ends. Both end portions of the wheel support cylinder 25 protrude outward from the side sills 22, 22, and a wheel support arm 26 that supports the wheel at one end is supported by a pivot 27 in the vicinity of the protruding end so as to be able to swing up and down. The wheel support arm 26 is elastically sandwiched between rubber-like cushion materials 30 and 31 arranged at the other end inside the wheel support cylinder 25.

A floor member 21 that forms the passenger compartment 18 is provided with a seat 28 that can be attached to and detached from the rear center, and a lower surface of the floor member 21 serves as a battery accommodating space 29. Therefore, the battery can be attached and detached and maintained by removing the seat 28.

Moreover, the straddle-type seat 28 enables the body to move back and forth in a posture in which an occupant is sitting. A steering shaft 19 is connected to the front wheel 11 at a lower end portion via a link mechanism (not shown), and a bar-type steering handle is provided at the upper end portion. Turn around.

The entrance door 17 is provided above the rear part of the chassis 15, the lower part is made of FRP, and the upper part is a transparent window 17 a. The passenger door 17 can be moved backward by a link mechanism (not shown). This retreat operation includes an operation of sliding about 200 mm backward from the closed position, and an operation of further rotating backward about 70 degrees at the position of sliding backward to widen the distance from the window frame member 26. Thus, the vehicle interior and exterior communicate with each other by the front stage operation to facilitate ventilation and conversation between the vehicle interior and exterior, and the rear stage operation facilitates entry and exit of the occupant.

Since this embodiment is configured as described above, the chassis 15 is firmly formed by the floor member 21, the side sills 22, 22 and the front and rear connecting members 23, 24, and the passenger is seated on the seat supported on the floor member 21. Is configured to be seated. Therefore, the strength capable of traveling can be ensured simply by mounting the necessary parts on the chassis 15, and the vehicle is completed by attaching the window frame member 16 and the passenger door 17 to this.

In such a configuration, the window frame member 16 and the entrance door 17 attached to the upper portion of the chassis 15 are not required to have a function of reinforcing the chassis 15, and therefore the window frame member 16 and the entrance door 17 are designed in consideration of lightness only. This can greatly contribute to the weight reduction of the vehicle.

Although the side sills 22 and 22 and the front and rear connecting members 23 and 24 have a sufficiently high cross-sectional shape with sufficient strength, the passenger door 17 is moved backward and the window frame member A space required for the passenger to get in and out of the vehicle 16 can be secured, and a straddle-type seat 28 is attached to the floor member 21 so that the passenger can easily move in the front-rear direction. The body can be moved in accordance with the position of the space for use, and getting on and off becomes easier.

As a modification, as shown in FIG. 8, if the front connecting member 24 is omitted by integrating the front end portions of the side sills 22, inwardly in a circular arc shape, the weight of the vehicle is further reduced without impairing the strength of the vehicle. In addition, the structure of the chassis 15 can be simplified and the area of the passenger compartment 18 can be increased.

DESCRIPTION OF SYMBOLS 10 Simple vehicle 11 Front wheel 12 Rear wheel 14 Electric motor 15 Chassis 16 Window frame member 16a Transparent window 16b Headlamp support frame 16c Direction indicator lamp 17 Entrance door 17a Transparent window 18 Car compartment 19 Steering shaft 20 Steering handle 21 Floor member 22 Side sill 22a Outer shell plate 22b Inner surface plate 22c End portion 22d Paste 22e Foam material 23 Rear connection member 24 Front connection member 25 Wheel support cylinder 26 Wheel support arm 26a Rear axle 27 Axis 28 Seat 29 Battery storage space 30, 31 Cushion material

Claims (6)

A synthetic resin outer shell plate that forms the outer surface of the vehicle and an inner surface plate that forms the inner surface of the passenger compartment are arranged to face each other with a gap therebetween, and the end portions thereof are bent toward each other to form a floor member. Side sills that are approximately cylindrical are formed on both sides in the width direction of the two sides, and the front and rear sides of both side sills are connected by a highly rigid connecting member that extends in the width direction to form a substantially container-shaped chassis that opens upward. A simple self-propelled vehicle made of synthetic resin having a window frame member detachably fixed to the upper part and a passenger door attached to the rear upper part so as to be movable backward. Side sills formed in a substantially cylindrical shape by outer plastic shell plates and inner surface plates arranged at intervals are arranged on both sides in the width direction of the floor member, and the front portions of both side sills are curved inward to each other. And the rear part is connected by a rigid rear connection member extending in the width direction to form a substantially container-shaped chassis that opens upward, and a window frame member is detachably fixed to the front part of the chassis. In addition, a simple self-propelled vehicle made of synthetic resin with a passenger door mounted on the rear upper part so that it can be moved backward. 3. The wheel support cylinder according to claim 1, wherein a wheel support cylinder is fixed to the front part and the rear connection member of both side sills through an outer shell plate and an inner face plate, and one end of the wheel support cylinder is attached to the side sill. A simple self-propelled vehicle made of synthetic resin that protrudes outward from each of the connecting member and a connecting member, and has a wheel support arm swingably supported by the protruding portion. 3. A simple self-propelled vehicle made of synthetic resin according to claim 1, wherein a straddle-shaped seat and a bar-shaped steering handle are installed on the floor member. 2. The vehicle body according to claim 1, wherein the chassis includes a substantially rectangular container inner frame formed by coupling an inner surface plate around a floor member, and an outer frame formed in a substantially similar shape by an outer shell plate outside the inner frame. A simple self-propelled vehicle made of synthetic resin, which is formed by polymerizing the inner surface plate and the outer shell plate through a foam material to form side sills and connecting members on both sides in the width direction of the floor member. 2. The vehicle body according to claim 1, wherein the chassis includes a substantially rectangular container inner frame formed by coupling an inner surface plate around a floor member, and an outer frame formed in a substantially similar shape by an outer shell plate outside the inner frame. A simple self-propelled vehicle made of synthetic resin in which side sills are formed on both sides of the floor member in the width direction by bonding the inner plate and the outer shell plate through a foam material.

Images