JPH06219366A - Intake device for scooter type vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to prevent foreign matter such as dust and water from being sucked into the air cleaner. [Composition] An intake inlet 22 is provided in a service lid 19 for maintenance of an engine 9 which is detachably provided on the front surface of a vehicle body exterior material 18 below a seat 15 and is provided with the intake inlet 2.
2 and the inlet 34 of the air cleaner 13 are connected by a bendable intake pipe 23 that passes through the inside of the vehicle exterior material 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake device for a scooter type vehicle in which foreign matter is less likely to be sucked into an air cleaner.

[0002]

2. Description of the Related Art A general scooter type vehicle is equipped with a power unit in which an engine and a power transmission device are integrally formed. A rear wheel is directly pivotally supported by the power unit and a front portion of the power unit is a body frame. It is pivotally attached to the rear wheel and also functions as a suspension device for the rear wheels.

The engine of the above power unit is equipped with auxiliaries such as a carburetor, an air cleaner and an exhaust muffler. Usually, since an article storage chamber capable of storing a helmet or the like is provided in the vicinity of the upper part of the engine, the air cleaner is disposed on the side of the rear wheel or the like due to space limitations. The intake port of the air cleaner is open toward the rear wheel side.

[0004]

However, since the suction port of the air cleaner is located relatively downward and is open toward the rear wheel side, foreign matter such as dust and water that the rear wheel winds up can be prevented. It was easy to be sucked into the intake port, and there was a concern that the element inside the air cleaner would become clogged and the engine output would drop.

The present invention has been made to solve the above problems, and an object thereof is to provide an intake device for a scooter type vehicle capable of preventing foreign matter such as dust and water from being sucked into the inside of the air cleaner. And

[0006]

In order to achieve the above object, an intake system for a scooter type vehicle according to the present invention is provided with a service lid for maintenance of an engine, which is detachably provided on a front surface of a body exterior material under a seat. Intake intake is provided in the, and this intake and the inlet of the air cleaner,
It is characterized in that the connection is made by a bendable intake pipe passing through the inside of the vehicle exterior material.

Further, an intake chamber having an intake opening that opens forward is provided on the bottom surface of the article storage chamber provided under the seat, and the intake chamber and the inlet of the air cleaner are bendable intake air. It is characterized in that it is connected by a pipe and a shield is provided immediately before the intake port.

[0008]

According to the intake device of the scooter type vehicle having the above-described structure, the intake air to the air cleaner is taken in from a clean place where foreign matter such as dust and water is unlikely to exist, so that the foreign matter is hardly sucked into the air cleaner. . Therefore, the element inside the air cleaner is less likely to be clogged, and the concern of engine output reduction is avoided.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view of a scooter type vehicle to which the present invention is applied. The scooter type vehicle 1 has a general vehicle body structure and includes an underbone type vehicle body frame 2.

A front wheel 3 is provided on the front head of the body frame 2.
A front fork 4 for supporting the is attached to a handlebar 5 so as to be rotatable left and right. On the other hand, a pivot shaft 6 extending in the vehicle width direction is installed in the center of the lower part of the body frame 2, and a power unit 8 is vertically swingably connected to the pivot shaft 6 via a link 7. This power unit 8 is generally used for a scooter type vehicle, and an engine 9 and a power transmission device 10 are integrally configured, and a rear wheel 11 is axially supported at a rear end portion of the power transmission device 10. ing.

An exhaust muffler 12 is fixed to the engine 9, and an air cleaner 13 is installed above the exhaust muffler 12. The exhaust muffler 12 and the air cleaner 13 rotate together with the power unit 8 around the pivot shaft 6.

A seat 15 is installed above the rear part of the vehicle body frame 2, and a large gap is formed between the seat 15 and the handlebar 5 downward, and a floor step on which a passenger's foot is placed is placed. 16 are formed.

An article storage chamber 17 for accommodating a helmet or the like is provided below the seating seat 15, and the article storage chamber 1 can be opened or closed by opening or closing the seating seat 15.
Articles can be put in and taken out from inside 7.

The vehicle body frame 2 is entirely covered with a vehicle body exterior material 18 made of synthetic resin or the like, so that the appearance of the scooter type vehicle 1 is adjusted and at the same time the air resistance during running is reduced. The internal equipment is protected.

A service lid 19 is detachably provided on the front surface of the vehicle body exterior member 18 below the seat 15. The service lid 19 is for performing maintenance such as plug replacement of the engine 9.

FIG. 2 is a right side view of the intake device 21 showing the first embodiment of the present invention, and FIG. 3 is an enlarged view of a III portion of FIG. The intake device 21 includes the air cleaner 13, an intake port 22 provided in the service lid 19, and
It is configured to have a bendable intake pipe 23 that passes through the inside of the vehicle body exterior material 18.

The service lid 19 has a claw 24 on its upper portion.
Is engaged with the vehicle body exterior material 18, and the lower portion is fixed to the vehicle body exterior material 18 with screws 25. A mounting port 26 is formed in the service lid 19, and a duct 27 is fitted in the mounting port 26.

The duct 27 is made of a flexible material such as rubber or soft synthetic resin.
7, the intake port 22 is formed so as to penetrate the inside and outside of the service lid 19, and the cover part 28 covers the front part and the upper part of the front opening part of the intake port 22.
And a tubular joint portion 29 connected to the rear of the intake port 22. The joint 29
A drain hole 31 is formed at the bottom of the.

On the other hand, the intake pipe 23 is formed by connecting a flexible hose 32 made of, for example, soft synthetic resin or paper and a rubber hose 33 with a bellows. The flexible hose 32 side is connected to the intake port 22. The rubber hose 33 side is connected to the inlet 34 of the air cleaner 13. A portion of the intake pipe 23 near the intermediate connecting portion is slidably locked to the vehicle body frame 2 by a clamp 35.

The air cleaner 13 is provided with an outlet 36, and this outlet 36 is used for the engine 9
The air cleaner 13 is connected to a carburetor (not shown) installed in the air cleaner 13, and an element such as a sponge is enclosed in the air cleaner 13.

When the engine 9 operates, the intake port 22
External air is sucked in from, and the sucked air flows through the intake pipe 23 into the air cleaner 13, is purified by the internal elements, and is then supplied to the engine 9.

In the intake device 21 thus constructed,
Since the intake port 22 is open at a clean place where foreign matter such as dust and water is unlikely to exist, that is, above the floor step 16, the foreign matter is less likely to be sucked into the air cleaner 13. Therefore, it is possible to effectively prevent the elements in the air cleaner 13 from being clogged, and it is possible to avoid a decrease in the output of the engine 9. Since the cover portion 28 is provided in front of the intake port 22, foreign matter can be more effectively prevented from entering the intake port 22. .

Even if raindrops are sucked into the intake port 22 when the scooter-type vehicle 1 is traveling in the rain, this water is discharged from the drain hole 31 and does not reach the air cleaner 13. . This effect is further enhanced by inclining the intake pipe 23 slightly downward as in the present embodiment.

As described above, the air cleaner 13
Moves together with the power unit 8, so the air cleaner 1
Although the relative position of the inlet 34 of the No. 3 and the intake port 22 constantly fluctuates, the fluctuation of the relative position is absorbed because the intake pipe 23 is bendable.

When the service lid 19 is attached or detached, the rubber hose 33 of the intake pipe 23 expands and contracts, and the clamp 35 moves along the vehicle body frame 2 to allow the service lid 19 to move freely. At this time, the duct 27
It is also possible to remove the from the service lid 19.

FIG. 4 is a right side view of an intake device 41 showing a second embodiment of the present invention, FIG. 5 is an enlarged view of a V portion of FIG. 4, and FIG. 6 is a sectional view taken along line VI-VI of FIG. Is. This intake device 41
Is an air cleaner 13, an intake chamber 42 provided on the bottom surface of the article storage chamber 17, an intake inlet 43 provided in the intake chamber 42 so as to open toward the front, and an intake inlet 43 of the intake chamber 43. It comprises a shield 44 provided immediately before and a bendable intake pipe 45 for connecting the intake chamber 42 to the inlet 34 of the air cleaner 13.

The intake chamber 42 is, for example, the article storage chamber 17
Is integrally formed by digging in the bottom surface of the container, and a lid 46 is detachably fitted at the boundary between the article storage chamber 17 and the intake chamber 42. The intake chamber 42 may be separately attached to the bottom surface of the article storage chamber 17.

The intake inlet 43 is formed above the bottom surface of the intake chamber 42, and the shield 44 formed, for example, in the shape of a flat plate, hangs just before the intake inlet 43. ing. The shield 44 may be integrated with the bottom surface of the article storage chamber 17 or may be a separate body.

A connection port 47 is formed in the rear portion of the intake chamber 42. One end of the intake pipe 45 is fitted into the connection port 47, and the other end of the intake pipe 45 is connected to the inlet 34 of the air cleaner 13. Has been done. For the intake pipe 45, for example, the same one as the rubber hose 33 with a bellows described in the first embodiment is used, and the relative position fluctuation between the inlet 34 of the air cleaner 13 and the intake intake 43 is allowed.

When the engine 9 is operated, air is sucked from the intake port 43, and the sucked air flows into the air cleaner 13 through the intake pipe 45 and is purified by the internal elements before being supplied to the engine 9. To be done.

Also in the case of the intake device 41, as in the case of the intake device 21 described in the first embodiment, the position of the intake port 43 is in a clean place where foreign matter such as dust and water is unlikely to exist. , It is difficult for foreign matter to be sucked into the air cleaner 13,
The clogging of the elements in the air cleaner 13 is effectively prevented, and the output reduction of the engine 9 is avoided. In particular,
Since the shield 44 is provided immediately in front of the intake port 43, it is difficult for foreign matter to enter the intake port 43 straightly, and the above effect is enhanced.

Since the rear wheel 11 is equipped with a mudguard fender (not shown), there is no possibility that mud or the like scattered from the rear wheel 11 will reach the vicinity of the intake port 43.

[0033]

As described above, in the intake system for the scooter type vehicle according to the present invention, the intake lid is provided on the service lid for engine maintenance which is detachably provided on the front surface of the body exterior material under the seat. The intake port and the inlet of the air cleaner are connected by a bendable intake pipe passing through the inside of the vehicle exterior material.
Further, an intake chamber having an intake opening that opens forward is provided on the bottom surface of the article storage chamber provided under the seat, and the intake chamber and the inlet of the air cleaner are connected by a bendable intake pipe. In addition, a shield is provided immediately before the intake port.

Therefore, the intake air of the air cleaner can be taken in from a clean place where foreign matters such as dust and water are unlikely to exist, and the cleaning action of the intake air is improved. Therefore, the element inside the air cleaner is less likely to be clogged, and the concern of engine output reduction is avoided.

[Brief description of drawings]

FIG. 1 is a right side view of a scooter type vehicle to which the present invention is applied.

FIG. 2 is a right side view of the intake device showing the first embodiment of the present invention.

FIG. 3 is an enlarged view of a part III in FIG.

FIG. 4 is a right side view of the intake device showing the second embodiment of the present invention.

5 is an enlarged view of a V portion of FIG.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 1 scooter type vehicle 9 engine 13 air cleaner 15 seating seat 17 article storage chamber 18 vehicle body exterior material 19 service lid 21, 41 intake device 42 intake chamber 22,43 intake inlet 23, 45 intake pipe 34 inlet 44 shield

Claims (2)

[Claims] 1. An intake inlet is provided in a service lid for engine maintenance, which is detachably provided on a front surface of a vehicle exterior material in a lower portion of a seat, and the intake inlet and an inlet of an air cleaner are provided in the vehicle exterior material. An intake device for a scooter type vehicle, which is connected by a bendable intake pipe passing through the inside. 2. An air intake chamber having an air intake opening opening forward is provided on a bottom surface of an article storage chamber provided in a lower portion of the seat, and the air intake chamber and the inlet of the air cleaner are bendable intake air. An intake device for a scooter type vehicle, which is connected by a pipe and is provided with a shield immediately in front of the intake port.