JPS59145673A - Saddling type motor four wheel car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a straddle-type four-wheeled motor vehicle.

A straddle-type automatic four-wheeled vehicle with two front wheels and two rear wheels, equipped with a prime mover, ultra-low pressure tires called Pal-Tn tires, and a riding position similar to that of a tricycle. A wheeled wheel is suggested.

The above-mentioned four-wheeled vehicles take advantage of the characteristics of balloon tires to drive off-road such as gravel areas, muddy areas, swamps, and grasslands. For this reason, there is a demand that the air intake port, element, etc. of the air cleaner be placed as far upward as possible.

This invention was made in consideration of this type of four-wheeled vehicle that travels off-road.

The purpose of the present invention is to increase the capacity of a multi-fuel tank by effectively utilizing space, and also to prevent the influence of sand, muddy water, etc. by placing the air cleaner as high as possible. death,
It is an object of the present invention to improve the practicality of this type of four-wheel vehicle, and in order to achieve the above object, the present invention provides a fuel tank which is disposed in front of the engine between the left and right front wheels, and which is also integrated into the fuel tank. The gist of this was that the air cleaner was placed on the frame member above the engine.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a side view of the four-wheeled motor vehicle 1, Fig. 2 is a plan view thereof, and Fig. 3 is a front view thereof. , frame 2
consists of one main frame 2a extending rearward from the upper part of the head tube 3, two down tubes 2b extending rearward and downward from the lower part of the head tube 3, and rearward from the lower end of the down tube 2b. It consists of a down tube lower 2c extending upward, and two center tubes 2d that extend upward from the rear end of the down tube lower 2c and are connected to the rear end of the main frame 2a. Two 7-drays 7+, 2e, 2'' extend rearward from the upper end of the center tube 2d, hang diagonally downward from the rear of the track rail 2e, and extend forward from the lower end of the center tube 2(). The front end is joined to the rear end of the down tube lower 2c to form the rear part of the frame.

The engine 4 is mounted in the space surrounded by the main frame 2a1 of the frame 2, the down tube blower 2ON, and the center tube 2d, and the axle 5ai of the left and right rear wheels 5, 5 is mounted horizontally on the rear lower part of the rear tube 2 of the frame. is connected to a shaft drive mechanism including a gear mechanism 6 including a bevel gear in the intermediate portion, a drive shaft 7 extending rearward from the transmission case 4a of the engine, etc., and drives the rear wheels 5.5.

A front wheel support arm 8°8, which is tilted forward and downward from both sides of the middle part of the head tube 3, and which is tilted downward symmetrically outwardly, hangs down.
The front wheel support arms 8, 8 have their upper ends joined to both sides of the middle of the head tube 3, and are configured in a V-shape from the front so that the distance gradually widens downward, forming a triangle with the head tube 3 as the apex. . A vibrator-shaped axle support member 9 is connected and installed between the lower ends of the support arms 8, 8, which have the widest distance, and an intermediate portion of the support member 9 is inserted from the lower end of the down tube 2b inside the joint of the arms 8, 8. The two sub-arms 10.10 extending forward are joined, and the down tube 2
A large space is formed in the front-rear direction between b and the lower part of the deme 8°8.

The front wheels ii, i1' are facing outward at both ends of the support member 90,
Front @11.11 is knuckle arm 11a1 king pin 1
1b, the axle 11c is supported so as to be freely steerable, and the tie rods 12.1 on the left and right sides of the knuckle arm 11aU
2 to each tip of its corresponding one. A steering wheel shaft 13 is rotatably inserted and supported in the head tube 3, and a bar handle 1 is attached to the upper end of the shaft 13.
4, and grip portions 14a at both ends of the handle 14.

14aU front brake lever 14b and hiss o on one side
T) A rear brake lever 14dffi is provided on the other side of the brake lever iJc, and a headlight unit 15 is provided in the middle of the recessed portion of the handlebar 14. The lower part of the steering shaft 13 faces slightly rearward under the left and right support arms 8, 8, and the bases of the left and right tie rods 12 are connected to the lower end of the steering shaft 13 via a pole joint 12at. , each tie rod 1
The respective tips of 2.12 are connected to the left and right front wheels 11.11 through knuckle arms 11a and 12b.

In the drawing, 16 is a step provided to protrude to the side of the left and right down tube lowers 2C, 17 is a brake pedal, 18 is a change pedal, and 19 is a front wheel i1. ii. The front fender shown above, and 20 indicates the front carrier disposed above it.

In the above, the left and right front wheels i1. A space S with the width of the front wheels ii and i1 is formed above the subtube 10.10 and in front of the down tube 2b at the rear of the steering wheel shaft 1.
3 and the down tube 2b is also inclined, so the space S forms a triangle in the front-rear direction. This space S is large in the middle and lower part in the front and back, and the width is the front wheel 1.
A sufficiently large one can be formed with a size between 1° and 11°.

A fuel tank 21 is disposed within this space S, and specifically, the tank 21 is connected to the left and right sub-arms io, i.

It will be placed and supported on top. The tank 21 has a front wall 21
a and the rear wall 21b are formed to be inclined to avoid interference with the steering shaft 13 and the down tube 2b,
Viewed from the side, it has a trapezoidal shape that narrows upwards from front to back, and the width is within the space between the front wheels.
It can be placed in front.

By the way, by arranging the fuel tank 21 as described above, it is possible to effectively utilize the empty space in front of the engine between the left and right front wheels 11, 11, and the dead gas space can be effectively utilized. can. Furthermore, since the fuel tank 21 is arranged in a space surrounded by the left and right front wheels 11, 11, the sub-arms 10, 10, and the engine 4, it is advantageous in terms of protection.Furthermore, the capacity of the fuel tank can be increased to extend the operating time. This allows for longer refueling intervals, which is convenient for off-road use. Since the above-mentioned other fuel phase tanks are installed at a low position in front of the engine between the front wheels or behind the front wheels, heavy objects are placed in a low position, lowering the center of gravity and providing good running and steering performance. It will be done.

Next, an air cleaner device 22 is provided on the main frame 2a extending rearward from the top of the herad tube 3 of the frame 2 of the four-wheeled motor vehicle 1. In the embodiment, the outer shape of the air cleaner case 23 is automatic.

The case 23 (d) is set to have a shape similar to the fuel tank of a tricycle, and the length is set to be approximately the entire length of the main frame 2a, like a fuel tank. An air cleaner element 24 is disposed in the upper part of the air cleaner case 23, and in the embodiment of the element 24, the outlet part 24at of the hanging clean side is connected to the main frame 2a.
The inside of the pipe-shaped frame 2a is used as a clean side duct, and the frame 2a is set to communicate with one side of the center tube 2d-1 and used as a duct. Air cleaner subchamber 25 located at the rear of the middle upper part of 1
is connected to the duct via a connecting tube 25ae. Such a sag chamber 25tA suction pipe 26 is connected to a carburetor 26 disposed behind the cylinder head 4b of the engine 4.
Connect via a'e. An opening/closing lid 27 is provided above the element 24 on the upper wall of the case 23, and by opening and closing the lid 27, the element 24 is attached and detached, and maintenance such as element replacement is performed. At the upper part of the front wall 23a of the case 23, an outside air intake port 28 consisting of a plurality of small holes is provided.

At the rear of the tank-like case 22 is a saddle-shaped /
- a seat 29 is provided, and the seat 29 (is seat rail 2e, 2
e, and the subchamber 25 is disposed at the front lower side of the seat 29. In the figure, 30 indicates the rear wheels 5, 5.
31 is a rear carrier; 32 and 33 are storage compartments provided in the middle of the front and rear covers 19 and 30;
33a is opened and closed, and 34 is a trailer hit for towing.

In the above description, the air cleaner device 22 is disposed on the main frame 2a, which is an upper constituent member of the frame 2, above the engine, and is disposed at the upper part of the front part of the four-wheeled motor vehicle below near the handlebar. Therefore, even if you drive on sand, mud, swamps, or even water, the air cleaner is located at the top, which prevents sand, mud, water, etc. from entering as much as possible, and reduces element deterioration as much as possible. It is possible to improve the lifespan and durability of the elements. Since the air cleaner is mounted on the main frame, the outer shape of the case can be made very large, increasing the capacity of the air cleaner. It is also advantageous in terms of maintenance because element replacement is extremely easy compared to the conventional structure in which element replacement is performed in a narrow space.

[Brief explanation of drawings]

Figure 1 is a side view of the four-wheeled motor vehicle, Figure 2 is a plan view of the same, and Figure 3 is a side view of the four-wheeled motor vehicle.
The figure is a front view of the same. In the drawing, 1 is a four-wheeled motor vehicle, 2 is a vehicle body, 4 is an engine, and 5 is a four-wheeled motor vehicle.
is a rear wheel, 11 is a front wheel, 21 is a fuel tank, 22 is an air cleaner, and 29 is a sort. Patent Applicant: Honda Motor Co., Ltd. Agent, Patent Attorney (Part 2) 1) Japan Department, Patent Attorney: Ohashi, Japan Department, Patent Attorney: Yu Koyama

Claims (1)

[Claims] 1. An automatic four-wheel drive vehicle comprising left and right rear wheels forming drive wheels, left and right front wheels forming steering wheels, an engine in the lower part of the vehicle body between them, and a saddle-shaped seat etc. in the rear part of the upper part of the vehicle body. A saddle-riding four-wheeled vehicle is characterized by having a fuel tank located between the front wheels and in front of the engine. 2. In a four-wheeled motor vehicle that is equipped with left and right rear wheels that serve as driving wheels, left and right front wheels that serve as steering wheels, an engine in the lower part of the body between them, and a saddle-shaped 7-toe, etc. in the rear of the upper part of the body, the front wheels A straddle P-type four-wheeled motor vehicle characterized by having a fuel tank disposed in a space in front of the engine between the two, and an air cleaner device disposed above the engine.