JPH0228073A - Breather device for motorcycle - Google Patents

Abstract

PURPOSE:To contrive the simplification or the like of constitution with a cap constituted separately from a breather device by additionally providing the cap while forming a breather chamber in a filler box, provided in a fuel tank, and connecting the breather chamber to communicate with a tank chamber and with the outside air. CONSTITUTION:In a motorcycle, a fuel tank 7 is set up in right and left main frames 6 extended to the rear from a head pipe 3. The fuel tank 7 is formed from an outer plate 19 and an inner plate 20, further the inner plate 20 forms a recessed part 21 housing an air cleaner 9. Here the outer plate 19 mounts a filler box 34, and its partition 34a forms a fuel supply port 34b, further a cap 35a is provided being able to be opened and closed through a bin 35b in a cover 35 of location corresponding to the fuel supply port 34b. While a breather chamber A is formed between a peripheral side wall part 34f and a circular side wall part 34g, in the filler box 34. The breather chamber A communicates with the outside air through a cock 39 or the like.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a freezer device for a motorcycle, and more specifically, a cap can be freely replaced and a freezer chamber can be formed without any special device. This invention relates to a freezer device for a motorcycle.

[Conventional technology] In motorcycles, for example, freezer devices for fuel tanks,
Some are attached to the cap that attaches to the filler box. In this case, when caps are freely selected and used for races, etc., it is necessary to provide a freezer device for each cap, which is unreasonable.

For this reason, for example, as described in Japanese Unexamined Patent Publication No. 82-178479, there is a method in which a freezer device is provided separately from the cap to improve the degree of freedom in replacing the cap.

[Problem to be solved by the invention] However, if the freezer device is provided separately from the cap,
It is troublesome as it is necessary to create a new freezer room, and
This increases the number of parts, which is undesirable.

This invention was made in view of the above circumstances, and the purpose is to provide a freezer device for a motorcycle that has a high degree of freedom in replacing the cap and can form a freezer chamber without any special device. There is.

[Means for Solving the Problems] In order to solve the above problems, the present invention includes a filler box provided in a fuel tank that is removably equipped with a cap, a freezer chamber formed in the filler box, and a freezer chamber provided in the filler box. It is characterized by the provision of a tank communication hole that communicates with the tank chamber and a freezer vibe that communicates with the outside air.

[Function] In this invention, the filler box is removably equipped with a cap, a freezer chamber is formed in the filler box, and the cap and pleather device are separate, so the degree of freedom in replacing the cap is increased. Moreover, since the freezer chamber is formed in the filler box, there is no need to newly provide a freezer chamber, and the freezer chamber can be formed without any special equipment.

[Example] Next, an example of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are diagrams showing a motorcycle to which the present invention is applied. Reference numeral 1 in FIG. A fuel tank 7 is mounted on the left and right main frames 6 extending rearward from the head vibe 3, and the internal combustion engine 8 has an air cleaner 9 and a carburetor 10 that are its intake system.
is suspended so that it is disposed below the fuel tank 7. A seat frame 12 is attached to a bracket 11 at the rear end of the main frame 6 so as to face rearward, and a seat 13 is provided on this seat frame 12. A rear wheel 15 is supported at the bottom of the bracket 11 via a rear arm 14, a radiator 16 is provided in front of the internal combustion engine 8, and a cowling 17 covers the area from the front of the head vibe 3 to the side of the internal combustion engine 8. ing. This cowling 1
An air introduction 017a is formed on the front side of the air cleaner 7, and air is introduced into the air cleaner 9 through a suction duct 18.

As shown in FIGS. 2 to 6, the fuel tank 7 is formed by joining an aluminum outer plate 19 and an inner plate 2o, and the inner plate 2o has an upper bottom plate 2a and a lower bottom plate 20b. Welded. This upper bottom plate 20a has a recess 2 in the fuel tank 7.
1 is formed, thereby securing a space in which the air cleaner 9 is accommodated. Also, the fuel tank 7 is attached to the lower bottom plate 20b.
A convex portion 22 is formed on the mounting mechanism 24 , and the fuel pump 23 is attached to the mounting mechanism 24 .
It is attached to the lower bottom plate 20b via.

A bracket 25 is welded to the front end of the fuel tank foot, and this bracket 25 is supported via a bolt 26 on the front side of the main frame 6 via a support portion 6a.

A bracket 27 is fixed to the rear end of the fuel tank 7 by welding, and this bracket 27 is tightened and fixed to a cross member 30 installed at the rear end of the main frame 6 with two left and right bolts 29 via a rubber damper 28. has been done. A reinforcing plate 31 is welded along the front side of the lower bottom plate 20b of the fuel tank 7, and this reinforcing plate 31 is mounted via a rubber damper 33 attached to a cross member 32 installed on the main frame 6. There is.

At the front end of the fuel tank 7 is an outer plate 1 forming a tank chamber 7a.
An extending portion 19a that extends from 9 and does not face the tank chamber 7a.
is formed, and this extending portion 19a extends to the upper surface of the main frame 6.

A pair of left and right sleeves 18a are welded to this extending portion f9a, and an outside air introduction pipe 18 is fitted into these sleeves 18a to guide outside air from the outside air introduction port 17a of the cowling 17 to the air cleaner 9. .

The distance N34 a of the filler box 34 attached to the outer plate +9 of the fuel tank 7 has a circular fuel supply port 34 at the @ part.
b is formed, and a cover 35 is screwed into the recess 34c on the upper surface. A cap 35'a is provided on the cover 35 at a portion corresponding to the fuel supply port 34b so as to be openable and closable with the bottle 35b as a fulcrum. A funnel 36 is connected to an inner rib 34d of the fuel supply port 34b, and the funnel 36 extends toward the convex portion 22. Also, filler box 3
An overflow vibe 37 is connected to the hole 34e of No. 4.

Further, on the back surface of the partition wall 34a of the filler box 34, a side wall portion 34f along the outer periphery and side wall portions 34g provided on the front and back inside are integrally formed. The space formed between 34g and 34g is covered with a plate 38 at the bottom to form a freezer chamber A.

Freezer NA is communicated with the tank chamber 7a through a communication port 34h formed in the outer peripheral side wall 314f and the plate 38, and a cock 39 is provided on the upper surface of the hole 34i of the partition wall 34a. This cock 39 has Freeza Vibrator 40
It is communicated with the outside air via a check valve 41.

The communication port 40h in the side wall is formed on the opposite side of the parking stand mounting portion of the motorcycle 1 to prevent fuel from leaking even if the vehicle body is tilted toward the parking stand.

Therefore, in the freezer device of the present invention, the freezer chamber A is communicated with the tank chamber 7a via the communication holes 34h and 38a, and the freezer vibe 40 connected to the cock 39 is communicated with the outside air via the check valve 41. Because I am doing
The pressure in the fuel tank 7 is prevented from becoming higher than the outside air.

In this way, since the cap 35a and the freezer device are separate, for example, when the cap is used freely in races, etc., there is no need to provide a freezer device for each cap, and the cap can be replaced freely. degree increases.

In addition, the freezer chamber A is attached to the partition wall 34a of the filler box 34.
Since it is integrally formed by covering with the plate 38, there is no need to newly provide a freezer chamber for the freezer device, the freezer chamber can be formed without special equipment, and the number of parts is reduced. .

[Effects of the Invention] As explained above, the present invention includes a filler box provided in a fuel tank that is removably equipped with a cap, a freezer chamber formed in the filler box, and a tank that communicates with the tank chamber from the freezer chamber. Since the communication hole and the freezer vibe communicating with the outside air are provided, the cap and the freezer device are separated, increasing the degree of freedom in replacing the cap. Moreover, since the freezer chamber is formed in the filler box, there is no need to newly provide a freezer chamber, and the freezer chamber can be formed without any special equipment, reducing the number of parts.

[Brief explanation of the drawing]

Figure 1 is a side view of a motorcycle to which this invention is applied;
The figure is a sectional view of the fuel tank, Figure 3 is a plan view, and Figure 4 is a cross-sectional view of the fuel tank.
The figure is a top view of the filler box with the cover removed.
This figure is also a bottom view, and FIG. 6 is a sectional view showing the connection between the freezer chamber and the freezer vibe. In the figure, 1 is a motorcycle, 7 is a fuel tank, FA is a tank chamber, 34 is a filler box, 34a is a bulkhead, 34h
is a communication port, A is a freezer chamber, and 40 is a freezer vibe. 4th FjA Patent Applicant: Yamaha Motor Co., Ltd. Figure 5

Claims (1)

[Claims] A filler box provided in the fuel tank is provided with a removable cap, a freezer chamber is formed in the filler box, and a tank communication hole communicating from the freezer chamber to the tank chamber and a freezer pipe communicating with outside air are provided. Motorcycle freezer equipment.