JPS609411Y2 - Auxiliary fuel passage device for motorcycles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to an auxiliary fuel passage device for an alcohol-fueled two-wheeled motor vehicle.

The applicant of this application previously developed this type of two-wheeled vehicle with front and rear wheels,
A main fuel tank at the front and an auxiliary fuel tank at the rear are provided on the upper part of the body frame containing the engine in the middle part, and the main fuel tank stores alcohol fuel, for example, and the auxiliary fuel tank stores gasoline fuel, for example. We have proposed a type in which the alcohol fuel is used at all times, but the gasoline fuel can be used for starting in cold weather, etc. In this case, the auxiliary fuel tank is It is desired that an auxiliary fuel passage extending forward is provided, through which the gasoline fuel is led to a metering pump or the like in front thereof, and that the passage is simple and robust, especially at its connections.

The purpose of the present invention is to obtain a device that meets the above requirements.The main fuel tank at the front is mounted on the upper part of the vehicle body frame 3 which has the front and rear wheels 1, 1 and the engine 2 in the middle. 4 and a rear auxiliary fuel tank 5, a joint tube 7 extending forward is integrally provided at the outlet 6 of the auxiliary fuel tank 5, and a strainer tube is attached to the joint tube 7. At the same time, a curable resin fuel tube 9 is fitted to the strainer tube 8, and the fitting connection portion between the fuel tube 9 and the strainer tube 8 is fitted to the joint tube 7. It is characterized in that it is fitted and covered with an elastic protector tube 10 made of rubber or other material.

The strainer tube 8 has an enlarged head 8a, and the depth of insertion into the joint tube 7 is restricted to a constant level by a step 8b on the outer periphery of the head 8a.
The protector tube 10 is fitted with the fuel tube 9 at point c, and the protector tube 10 extends over the entire length of the above-mentioned fitting part, and a pair of clips 11 and 11 are attached to the outer periphery of the protector tube. .

The fuel tube 9 extends forward and is connected to a joint tube 13 extending from the metering pump 12 on the lower surface of the fuel tank 4 in front of it. This is done with the other protector tube 15, so that the gap 14 provides the tube 9 with relief in the length direction.

According to the present invention, the strainer tube 8 is fitted to the joint tube 7 extending forward from the tank inlet 6, and the resin fuel tube 9 is fitted to the strainer tube 8. The tube 9 is connected to the tube 9 by a simple spigot fitting of resin, which makes the connection easy, liquid-tight and robust, and the fitting connection is made of rubber or other elastic material fitted to the joint tube 7. Since the protector tube 10 is fitted and covered, stress concentration at the fitting connection part can be prevented, and even when the influence of vibration is taken into consideration, the local stress caused by the vibration is effectively dispersed and absorbed, and the joint part is It has the effect of being able to withstand long-term use without damage.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of an example of a motorcycle equipped with the device of the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is its ■-
■It is an enlarged sectional view taken along a line. 1.1...Wheels, 2...Engine, 3
・Song/Vehicle frame, 4... Main fuel tank, 5...
... Auxiliary fuel tank, 6... Outlet, 7...
...Joint tube, end...Strainer tube, 9...Fuel tube, 10...
・Protector tube.

Claims (1)

[Scope of utility model registration request] In a motorcycle in which a main fuel tank 4 at the front and an auxiliary fuel tank 5 at the rear are arranged on the upper part of a body frame 3 having front and rear wheels 1, 1 and an engine 2 in the middle thereof, A joint tube 7 extending forward is integrally provided at the outlet 6 of the fuel tank 5.
A strainer tube 8 is fitted to the strainer tube 8, and a curable resin fuel tube 9 is fitted to the strainer tube 8.
An auxiliary device for a two-wheeled motor vehicle, characterized in that a fitting connection portion between the fuel tube 9 and the strainer tube 8 is fitted and covered with a rubber or other elastic protector tube 10 fitted to the joint tube 7. Fuel passage device.