JPH0569757B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in motorized vehicles such as tricycles.

(Prior Art) Conventionally, a single front wheel 51 as shown in FIG.
and two rear wheels 52, 52, and an engine 5.
3 is provided in front of the rear wheels 52, 52.
0 is known. The drive system of this automatic tricycle 50 includes a gear mechanism 55 including a differential device on the rear axle 54 between the rear wheels 52, 52, and an engine 53.
The output section 56 of the transmission case and the gear mechanism 55
are connected by a propulsion shaft 57 to obtain power.

In such a configuration, the gear mechanism 55 and the output shaft 57 of the engine 53 are arranged substantially on the same line in the longitudinal direction of the vehicle body.

(Problem to be Solved by the Invention) As described above, in the conventional configuration, the gear mechanism 55 and the output shaft 57 are arranged on the same line in the front and back direction, so the position of the gear mechanism is the same as the position of the output shaft 57. This makes it difficult to secure space for other parts between the rear wheels. For example, in the case of providing a cargo loading container 58 as shown in FIG. 7, the lower container plate 58a becomes shallow, making it difficult to increase the size of the storage container 58, especially its height.

The present invention has been made to solve the above-mentioned technical problem, and its purpose is to secure a wide space on the axle between the left and right wheels in the width direction, and to reduce the size of auxiliary equipment or equipment. An object of the present invention is to provide a motorized vehicle that can improve the degree of freedom in arrangement.

(Means for solving the problem) In a vehicle in which the drive wheels are two wheels, left and right, and the prime mover is disposed at the middle part in the width direction of the vehicle body,
A driven mechanism for transmitting driving force from the output section of the prime mover to the wheels is provided eccentrically to one side on the left and right on the axle between the left and right wheels, and the mounting position of the driven mechanism on the axle side is located outside the vehicle body from the output section of the prime mover. It is characterized by being deviated towards the side.

(Embodiment) A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic side view of a tricycle. The tricycle 1 supports a front fork 4 which supports a front wheel 5 in a freely steerable manner via a head tube 3 at the front end of a frame 2. The front wheel 5 is a so-called balloon tire. It uses ultra-low pressure tires to form a single steering wheel.
An engine 6 is mounted on the lower front part of the frame 2, and a fuel tank 7 is mounted on the upper part.A rear cover 9 having left and right rear fenders 8, 8 is provided on the rear part of the frame 2. A seat 10 is provided behind the tank 7. At the rear of the frame and below the rear fenders 8, 8, two rear wheels 11, 12, which serve as driving wheels, are provided spaced apart from each other to the left and right.
1,112 are combined, and the rear wheels 11, 12 are constructed with ultra-low pressure tires.

A gearbox 14 is provided near one end of the rear axle 13, for example near the left end, and the axle 13 is divided into left and right parts 131, 132 within the box 14, with one shaft 131 being extremely short and the other shaft 132 having approximately the full width. The length is close to . Such axes 131 and 13
Bevel gears 15 and 16 forming a differential gear mechanism are provided at opposite ends of the gears 2, and a support shaft 18 is provided in a differential case 17 surrounding the gears, and a pinion gear 19 that meshes with the gears 15 and 16 is attached to this. A driven gear 20 is fixedly installed. Such a gearbox 14 is eccentric to one end of the axle 13, and the gearbox 1
4 faces the inner diameter part of the rim 112 of the rear wheel 11 on this side with approximately 1/2 in the width direction.

On the other hand, the engine 6 is located behind the front wheels 5 and the rear wheels 11,
It is located in the middle of the vehicle in the width direction, in front of the 12 spaces. An output shaft 21 is located on the side of the transmission case 601 of the engine 6 on the side where the gearbox 14 is located.
A bevel gear 22 is provided on this. The bevel gear 22 is near the middle part in the vehicle width direction, while the gear box 14 is near the outside, and a propulsion shaft 23 connects them. A bevel gear 24 is provided at the front end of the propulsion shaft 23, and this and the bevel gear 22 of the output shaft 21 are meshed with each other.
3 has a front end close to the middle part in the vehicle width direction, and a rear end inclined rearward and outward so as to face the gear box 14, and meshes a bevel gear 25 provided at the rear end of the propulsion shaft 23 with a gear 20 in the gear box 14. In this way, the propulsion shaft 23 is disposed diagonally so that the front end faces inside in the vehicle width direction and the rear end faces outside in the vehicle width direction.
and the propulsion shaft 23 are angles on the wheel 11 side that are greater than 90°. In addition, 26 in the drawing is the cover of the propulsion shaft, and 27 is the cover of the propulsion shaft.
is the cover of the axle 13, 28 is the handle, 29
30 indicates a step, and 30 indicates a front fender.

As described above, the rear axle 13 is provided with the gearbox 14 extremely biased toward the wheel 11 side, and therefore there is no protrusion over its entire length in the vehicle width direction. A storage compartment 31 is provided on the rear axle 13, and the storage compartment 31 is formed by protruding a part of the rear cover 9 downward into a box shape. Lid body 3
14 can be opened and closed freely, and the bottom wall 31 of the storage compartment 31
3 has substantially the full width between the rear wheels 11 and 12, and can be provided close to the rear axle 13. Therefore, the storage container 31 can have a sufficiently large width and depth, and can have a large capacity.

In addition, the engine is placed in the center of the vehicle width, and the driven mechanism installed on the rear axle is a gear mechanism, and both are connected by a bevel gear and a propulsion shaft, so the shaft angle can be selected arbitrarily, and the shaft drive mechanism By using this method, the above can be achieved without changing the number of parts, which is advantageous in terms of structure.

Although the embodiments have been described above in detail, the embodiments are not limited to tricycles, but can be implemented on any vehicle with two rear wheels.

(Effects of the Invention) As is clear from the above, according to the present invention, the driven mechanism is provided on the axle between the left and right wheels so as to be offset to one side of the left and right, and the mounting position of the driven mechanism on the axle side is set at the output part of the prime mover. Since it is deflected further outward, the above-mentioned space on the axle can be formed wider on the side opposite to the direction of deflection, and therefore, this space can be used to improve the degree of freedom in the size and arrangement of auxiliary equipment or equipment. can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a tricycle as an example of a vehicle, and FIG.
The figure is a plan view of the same, Figure 3 is a cutaway side view of the same main part, Figure 4
5 is a cross-sectional plan view, and FIGS. 6 and 7 are explanatory diagrams of a conventional example. In the drawings, reference numeral 1 designates a three-wheeled motor vehicle, 2 a vehicle body, 6 an engine, 11 and 12 rear wheels, 13 a rear axle, 14 a driven mechanism, 22 an output section, and 23 a driven member.

Claims (1)

[Claims] 1. In a vehicle in which the drive wheels are two left and right wheels and the prime mover is disposed at the middle part in the width direction of the center of the vehicle body, the driven mechanism that transmits the driving force from the output part of the prime mover to the wheels is connected to the axle between the left and right wheels. 1. A motorized vehicle, characterized in that the driven mechanism is provided eccentrically to one left and right side at the top, and the mounting position of the driven mechanism on the axle side is offset to the outside of the vehicle body from the motor output section.