JPH11171075A - Motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hinder foggy water from being sucked into an air cleaner while avoiding cost increase. SOLUTION: An air cleaner case 26 is disposed below a seat 2. An intake duct 20 is protrusively provided at the upper part of the air cleaner case 26. A partition wall 21 surrounding the intake duct 20 from the front and both sides of a body is integrally formed at a seat bottom plate 17. Parts positioned at both sides of the intake duct 20, in the partition wall 21 are fixed to a seat support bracket 22 on the body frame side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle equipped with an air cleaner below a seat.

[0002]

2. Description of the Related Art Conventionally, in a motorcycle of this type,
The air duct of the air cleaner case is provided so that the air intake port is directed toward the rear of the vehicle body so that rain water falling on rainy weather, muddy water jumped up by the front wheels, and the like are not sucked into the air cleaner.

[0003]

However, if the intake port of the intake duct is merely directed toward the rear of the vehicle body, there is a problem that mist-like water blown by the traveling wind is sucked into the air cleaner. In order to solve this problem, it is conceivable to provide a filter around the intake duct so that mist-like water can be captured. However, if this configuration is adopted, the number of parts increases and the cost increases. .

The present invention has been made in order to solve such a problem, and it is an object of the present invention to prevent mist-like water from being sucked into an air cleaner while avoiding an increase in cost. With the goal.

[0005]

In order to achieve the above object, a motorcycle according to the present invention has an intake duct protruding above an air cleaner case disposed below a seat, and the intake duct is provided on a seat bottom plate. Is integrally formed with a partition wall surrounding the front of the vehicle body and both sides thereof, and portions of the partition wall located on both sides of the intake duct are fixed to a seat support bracket on the vehicle body frame side.

According to the present invention, the traveling wind flowing from the front side of the vehicle body toward the intake duct changes its direction by hitting a partition wall provided on the seat bottom plate. It can be captured by attaching to the outer surface of the partition wall. In addition, since the mist-like water is trapped using the seat bottom plate, the number of components does not increase. Furthermore, seat support brackets are provided on both sides of the intake duct in addition to the partition wall of the seat bottom plate,
The sheet support bracket can also capture mist-like water.

A motorcycle according to another invention is the motorcycle according to the invention described above, wherein the air cleaner case includes:
A sub-partition wall which faces between the intake duct and the partition wall of the seat bottom plate and surrounds the intake duct from the front and both sides of the vehicle body is integrally formed.

According to the present invention, since the labyrinth structure for suppressing the air flow is formed by the partition wall and the sub-partition wall, the flow velocity of the traveling wind flowing through the labyrinth structure is reduced. Mist contained in the water tends to adhere to the partition wall and the sub-partition wall. As a result, mist-like water flowing below the partition wall and flowing to the intake duct side can be captured by attaching to the partition wall and the sub-partition wall. Also,
Since the sub-partition wall is formed integrally with the air cleaner case, the number of parts does not increase.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a motorcycle according to the present invention will be described in detail with reference to FIGS. FIG. 1 is a side view of a motorcycle according to the present invention, FIG. 2 is an enlarged sectional view showing a main part, and FIG. 3 is a plan view showing an intake duct portion of an air cleaner case. In addition, FIG. 3 shows the fracture position of FIG. 2 by line II-II. FIG. 4 is a side view showing the rear portion of the seat, in which the engagement portion between the seat bottom plate and the cross member on the vehicle body frame side is cut away.

In these figures, the reference numeral 1 denotes a motorcycle according to this embodiment. The motorcycle 1 is equipped with an air cleaner 4 below the seat 2 and inside the side cover 3. The side cover 3 has a key lock (not shown) and cannot be removed from the vehicle unless the key lock is unlocked. In FIG. 1, reference numeral 5 denotes a cradle-type body frame, 6 denotes an air-cooled 4-cycle single-cylinder engine mounted on the body frame 5, and 7 denotes a body frame 5.
2 shows a front fork rotatably supported by the head pipe 8 of FIG. A front wheel 9 and a steering handle 10 are attached to the front fork 7.

Reference numeral 11 denotes a fuel tank;
Is a rear arm swingably supported by a rear arm bracket 13 of the vehicle body frame 5, and 14 is the rear arm 12
Shows the rear wheel mounted rotatably. The fuel tank 11
Are supported by a tank rail 15 of the vehicle body frame 5 and a seat rail 16 connected in the middle of the tank rail 15. The tank rail 15 is formed by one pipe, and the seat rail 16 is formed by two pipes forming a pair in the vehicle width direction. The seat 2 is supported by the seat rail 16.

As shown in FIG. 2, the seat 2 has a structure in which a cushioning material 19 is filled between a seat bottom plate 17 and a skin material 18, and is formed so that a driver and a passenger can be carried. ing. The seat bottom plate 17 is made of a synthetic resin, and integrally forms a partition wall 21 surrounding an intake duct 20 of the air cleaner 4 described later. This partition 21
As shown in FIG. 3, a front wall 21a and a pair of left and right side walls 21b.
A horizontal cross section is formed so as to form a U-shape that opens toward the rear of the vehicle body, and the intake duct 20 is surrounded from the front and both sides of the vehicle body.

The partition wall 21 is provided on the intake duct 20.
The rear ends of the side walls 21b located on both sides of the vehicle body are fixed to the seat support bracket 22 on the vehicle body frame 5 side by fixing bolts 23. The seat support bracket 22 includes:
The cross pipes 24 connecting the pair of seat rails 16 in the vehicle width direction are welded to the left and right sides of the vehicle body so as to extend forward and downward, respectively.

In this embodiment, as shown in FIG.
The seat side is extended downward so that the side lower edge 2a of the seat 2 overlaps with the intake duct 20 and the intake port 20a of the intake duct 20 when viewed from the side, and water rides on the airflow from the side of the vehicle body. It is prevented from entering the intake port 20a side.
By adopting this structure, the position of the side lower edge 2a of the seat 2 is lowered, so that the workability of the work of releasing the fastening of the fixing bolt 23 is not impaired, and the rear end of the seat support bracket 22 and the side wall 21b is not damaged. To the side lower edge 2
a.

If the side wall 21b is formed to be long in the vertical direction, the rigidity against the load in the horizontal direction tends to be low. However, in this embodiment, the front ends of the left and right side walls 21b are connected to each other by the front wall 2.
The connection at 1a reinforces the side wall 21b to improve the rigidity. That is, by forming the U-shaped partition wall 21 composed of the front wall 21a and the pair of left and right side walls 21b integrally with the seat bottom plate 17, the rigidity of the seat bottom plate 17 can be improved, and this partition can be improved. The seat 2 can be firmly fixed to the body frame 5 using the wall 21.

The sheet 2 is supported by the partition wall 21.
As shown in FIG. 4, the locking piece 17a at the rear end of the seat bottom plate 17 is engaged with the cross member 25 at the rear end of the seat rail 16, and the seat bottom plate is fixed. A plurality of load receivers 17b (see FIG. 2) projecting downward from the seat 17 are supported by the seat rail 16. The cross member 25 includes:
A pair of left and right seat rails 16 are horizontally connected to each other so as to be connected to each other, and an engagement ring 25a that projects in the front-rear direction of the vehicle body is protruded from a central portion of the upper end in the vehicle width direction. The rear end of the seat 2 is connected to the vehicle body frame 5 by engaging the locking piece 17a with the engagement ring 25a from the front of the vehicle body.

The air cleaner 4 comprises an air cleaner case 26 (see FIG. 2) formed in a box shape, and an air cleaner element (not shown) mounted inside the air cleaner case 26. The air cleaner case 26 is provided with an intake duct 20 protruding upward in the upper part on the rear side of the vehicle body, and has a carburetor 27 connected to an end on the front side of the vehicle body as shown in FIG. The part is supported by the body frame 5. As shown in FIG. 2, the support portion on the rear side of the vehicle body of the air cleaner case 26 is formed by connecting a connecting plate 26a protruding from the air cleaner case 26 to the lower end portion of the seat support bracket 22 on the left side of the vehicle body (indicated by a two-dot chain line in FIG. 2). Is fixed by a fixing bolt 28. A support portion of the air cleaner case 26 on the front side of the vehicle body includes a connecting plate 26 b protruding from the air cleaner case 26.
With the rear arm bracket 13 and the tank rail 15
Is connected to a connecting pipe 29 for connecting the supporting pipe via a stay (not shown).

The intake duct 20 is formed so that the intake port 20a is directed toward the rear of the vehicle body, and is surrounded from the front and both sides of the vehicle body by a sub-partition wall 30 formed integrally with the air cleaner case 26. The sub-partition wall 30 is formed between the intake duct 20 and the partition wall 21 of the seat bottom plate 17 so as to face from below.

The motorcycle 1 configured as described above has:
During traveling, traveling wind flows below the fuel tank 11 and the front end of the seat toward the intake duct 20 from the front side of the vehicle body as indicated by arrows in FIG. This traveling wind changes its flowing direction when it hits a partition wall 21 provided on the seat bottom plate 17.

Therefore, when the mist water is blown into the air cleaner 4 from the front side of the vehicle body by the traveling wind in rainy weather or the like, the mist water adheres to the outer surface of the partition wall 21 and is captured. can do. In addition, since the structure in which mist-like water is captured using the seat bottom plate 17 is employed, the number of parts does not increase.

Further, in the motorcycle 1, the sub-partition wall 30 is provided in the air cleaner case 26 between the intake duct 20 and the partition wall 21 of the seat bottom plate 17, so that the partition wall 21, the sub-partition wall 30 and As a result, a labyrinth structure is formed.
The mist-like water flowing to the zero side can be captured by attaching to the partition wall 21 and the sub-partition wall 30. This is because the labyrinth structure suppresses the flow of air, and the flow velocity of the traveling wind flowing from the outside of the partition wall 21 toward the intake duct 20 is reduced by the labyrinth structure, and the mist-like water contained therein is reduced. This is because it is easy to adhere to the partition wall 21 and the sub-partition wall 30. Moreover, since the sub-partition wall 30 is formed integrally with the air cleaner case 26, the number of components does not increase. In addition, the sub-partitioning wall 30 collides with the partitioning wall 21 and drops the appropriate water.
It also has the function of isolating it from the 0 mounting part.

In addition, in the motorcycle 1, portions of the partition wall 21 of the seat bottom plate 17 located on both sides of the intake duct 20 are fixed to the seat support bracket 22, so that the motorcycle 1 is partitioned on both sides of the intake duct 20. In addition to the wall 21, a seat support bracket 22 is provided, and the seat support bracket 22 can also capture mist water.

[0023]

As described above, according to the present invention, the traveling wind flowing from the front side of the vehicle body toward the intake duct changes its direction when it hits the partition wall provided on the seat bottom plate, so that it travels along the traveling wind. The flowing mist of water can be trapped by adhering to the partition wall. Therefore, it is possible to prevent the mist water from being sucked into the intake duct. Further, since the partition wall is formed integrally with the seat bottom plate, the number of parts does not increase, and a structure for catching mist-like water can be realized without increasing the cost. In addition, seat support brackets are provided on both sides of the intake duct in addition to the partition wall of the seat bottom plate, and the seat support brackets can also capture mist-like water, so that it is more difficult to suck in water. can do.

According to another invention in which the sub-partition wall is formed integrally with the air cleaner case, the labyrinth structure is formed by the partition wall and the sub-partition wall. Therefore, the flow velocity of the traveling wind flowing through the labyrinth part is increased. And the mist-like water contained therein tends to adhere to the partition wall and the sub-partition wall. As a result, mist-like water flowing below the partition wall and flowing to the intake duct side can be captured by attaching to the partition wall and the sub-partition wall. Further, since the sub-partitioning wall is formed integrally with the air cleaner case, there is no increase in cost due to an increase in the number of parts.

[0025]

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle according to the present invention.

FIG. 2 is an enlarged sectional view showing a main part.

FIG. 3 is a plan view showing an intake duct portion of the air cleaner case.

FIG. 4 is a side view showing a rear portion of the seat.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 2 ... Seat, 4 ... Air cleaner, 17
... Seat bottom plate, 20 ... Intake duct, 21 ... Partition wall, 22
... Seat support bracket, 26 ... Air cleaner case,
30 ... sub-partitioning wall.

Claims (2)

[Claims] An air cleaner case having an intake duct projecting upward is disposed below a seat, and a partition wall surrounding the intake duct from the front and both sides of the vehicle body is integrally formed on a bottom plate of the seat. A motorcycle, wherein portions of the partition wall located on both sides of the intake duct are fixed to a seat support bracket on a vehicle body frame side. 2. The motorcycle according to claim 1, wherein the air cleaner case is integrally provided with a sub-partition plate that faces between the intake duct and a partition wall of the seat bottom plate and surrounds the intake duct from the front and both sides of the vehicle body. A motorcycle characterized by being formed.