JPS6021288Y2 - Engine intake devices for motorcycles, etc. - Google Patents

Description

[Detailed explanation of the invention] The invention is designed to
This invention relates to an engine intake system for a vehicle in which the engine is exposed below the seat.

In this type of vehicle, as shown in Figure 1, the engine 1 and its attached air cleaner 2, etc. are located low in the vehicle body, and are also located between the front wheels 3 and rear wheels 4, so dirt that is thrown up while driving is a problem. Rainwater is easily sucked into the air cleaner 2, and the air cleaner element must be cleaned and replaced frequently.

Therefore, in order to prevent the above-mentioned problems, the intake port of the air cleaner is positioned directly below the seat 5.

The present invention also has an air intake device of the type in which the intake port is placed directly below the seat, in particular, the seat 5 and the rear fender 6 that integrally covers the lower part of the seat 5 and the upper part of the wheels 4, and this is integrated into the vehicle body frame. This is an intake system for a vehicle that is installed on top of 7, and the intake system can be easily obtained, and
The purpose is to facilitate connection with the air intake port of an air cleaner and to improve the sheeting properties of the connection point.

That is, a small space 8 is provided between the bottom 51 of the seat 5 and the rear fender 6 at a position above the air cleaner 2, and a small gap 11 is provided at the periphery of the seat 5 to communicate the small space 8 with the outside. An air cleaner connection port 9 is opened at a location corresponding to the bottom of the small space 8 of the rear fender 6, and an elastic seal ring 10 is fitted into the connection port 9.

The lower peripheral edge of the elastic seal ring 10 forms an inward lip 101 with an inverted cross section.

The seat 5 and the chassis 6 are integrated into the vehicle body frame 7.
When the elastic seal ring 10 is placed and fixed on the vehicle body frame 7 together with the engine 1, the elastic seal ring 10 fits around the air intake port 21 of the air cleaner 2, which has been previously attached to the vehicle body frame 7 together with the engine 1, so that its lip 101 tightly contacts the shoulder of the air intake port 21. It is configured.

As described above, the intake system of the engine of the present invention provides a small space 8 between the bottom 51 of the seat 5 and the rear fender that integrally covers the lower part of the seat 5 and the upper part of the wheels 4, and furthermore, the small space 8 is provided at the periphery of the seat 5. A small gap 11 that communicates the small space 8 with the outside
Since the small space 8 is connected to the air intake port 21 of the air cleaner 2, air is sucked into the air cleaner 2 through the small gap 11 at the periphery of the seat 5 → the small space 8 → the connection port 9 → the air intake port 21. The rear fender 6 suppresses the upward movement of dust and water thrown up by the wheels while the vehicle is running, preventing dust and water from entering the small space 8 and preventing the air cleaner element, carburetor, and engine from being affected. That's what I do.

Further, the communication portion with the outside is provided by the seat 5 which is integrally formed with the upper beam ender 6 of the small space 8.
The small space 8 and the small gap 11 are formed by a part of the seat and rear fender, which are always installed in a vehicle such as a motorcycle. At the same time, the clearance of the small gap 11 is maintained accurately.

The small space 8 can be easily provided between the seat 5 and the rear fender 6, which are integrally configured, by simply lifting a portion of the bottom 51 of the seat 5.

When the fender 6 integrated with the seat 5 is attached to the vehicle body frame 7, the small space 8 and the intake port 21 of the air cleaner 2 are
Since it is connected by fitting into the elastic seal ring 10, the trouble of connection can be saved.

In addition, since the shoulder of the air cleaner intake port 21 fitted into the lower end of the elastic seal ring 10 is in close contact with the inward lip 101 having an inverted cross section, it is protected against severe pitching and rolling of the vehicle body while driving. Even if the intake port 21 of the air cleaner
The connection point between the seal ring 10 and the elastic seal ring 10 does not shift, which has the effect of improving the sheeting properties.

[Brief explanation of the drawing]

FIG. 1 is a side view of a vehicle implementing the device of the present invention, FIG. 2 is an enlarged longitudinal cross-sectional view of the device of the present invention, and FIG. 3 is a cross-sectional view taken along line mm in FIG. 2. 1 is an engine, 2 is an air cleaner, 21 is an intake port, 5 is a seat, 51 is a bottom of the seat, 6 is a rear fender, 7 is a body frame, 8 is a small space, 9 is a connection port, 10 is an elastic seal ring, 101 is a Inward lip, 11 is a small gap.

Claims (1)

[Claims for Utility Model Registration] The seat and the rear fender that integrally covers the lower part of the seat and the upper part of the wheels are integrated, a small space is provided between the bottom of the seat and the chaffender, and the above-mentioned A small gap is provided to communicate the small space with the outside, and an elastic seal ring having an inward lip with an inverted cross section on the lower edge is fitted into the air cleaner connection port, which is made at the bottom of the small space in the rear fender. The seat, which is integrated with the rear fender, is mounted on the vehicle body frame, and is attached to the vehicle body frame together with the engine. An intake device for an engine in a motorcycle or the like, in which the intake port of the air cleaner is fitted into the lower end of the elastic seal ring and the shoulder of the intake port is brought into close contact with the inward lip, thereby communicating the air cleaner with a small space under the seat.