JPH10147276A - Motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make cooling water difficult to leak even by acting of forward acceleration generated at braking time or the like by arrangement of an overflow hose and reduce a cost. SOLUTION: This motorcycle is constituted such that a radiator 20 is provided in a car body 2, in this radiator 20, a recovery tank 50 connected by a hose 53 is arranged, in this recovery tank 50, an overflow hose 54a, 54a is connected. Here, the overflow hose 54a, 54a, in the recovery tank 50, is connected with a tank outlet 50d facing a vehicle forward, this overflow hose 54 is bent to extend toward a car body backward, and arranged to be bent to extend toward a car body forward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle having a radiator recovery tank.

[0002]

2. Description of the Related Art Some motorcycles are equipped with a water-cooled engine, and are provided with a radiator for cooling the cooling water by a traveling wind. A recovery tank connected to the radiator by a hose is arranged, and when the cooling water thermally expands with the radiator, overflowing cooling water is guided to the recovery tank. Some recovery tanks are connected to an overflow hose and discharge cooling water accumulated in the recovery tank by overflow.

[0003]

As described above, the overflow hose for discharging the cooling water accumulated in the recovery tank is simply routed toward the front of the vehicle body because the vertical length of the recovery tank has conventionally been ensured by a predetermined amount. Just do
Although it was able to cope with the forward acceleration generated at the time of braking, etc., for example, if the vertical length of the recovery tank could not be secured, cooling water would easily flow out of the overflow hose.

For this reason, it is conceivable to provide, for example, a check valve in the overflow hose. However, when a check valve is used, when the pressure is applied, the overflow hose or the recovery tank may be ruptured.
It costs money.

The present invention has been made in view of the above circumstances, and provides a motorcycle which is less likely to leak cooling water even when a forward acceleration generated during braking or the like due to wiring of an overflow hose is applied, and which is inexpensive. It is intended to be.

[0006]

Means for Solving the Problems In order to solve the problems and achieve the object, the invention according to claim 1 is provided with a radiator on a vehicle body, and a recovery tank connected to the radiator by a hose is arranged. In a motorcycle in which an overflow hose is connected to the recovery tank, the overflow hose is connected to the recovery tank with a tank outlet directed toward the front of the vehicle, and the overflow hose is bent and extended toward the rear of the vehicle, and further extended toward the front of the vehicle. It is characterized by being bent and stretched toward. Although the tank outlet of the overflow hose is connected toward the front of the vehicle, the cooling water that has flowed out of the tank outlet may flow out at the bent part toward the rear of the vehicle body even if the forward acceleration generated during braking etc. works. Cooling water that is regulated and accumulates in the portion that extends toward the rear of the vehicle body is offset by the forward acceleration acting in the direction opposite to the flowing out direction, so that leakage of the cooling water can be prevented. Furthermore, since the overflow hose does not use a check valve for preventing leakage of cooling water during braking or the like, transient pressure is not applied to the overflow hose or the recovery tank, and the cost is low.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a motorcycle according to the present invention will be described in detail with reference to the drawings. 1 is a side view of a motorcycle, FIG. 2 is a plan view of a motorcycle, FIG. 3 is a plan view of a recovery tank section, FIG. 4 is a side view of a recovery tank section, and FIG. 5 is a cross-sectional view taken along line VV in FIG. 6 is a sectional view taken along the line VI-VI in FIG. 3, and FIG. 7 is a view as seen from the direction A in FIG.

The motorcycle 1 comprises a vehicle body 2 having a head pipe 3, one men frame 4, one upper down tube 5, a pair of left and right lower down tubes 6, a pair of left and right rear arm brackets 7, and a pair of left and right seat rails. 8. A front fork 9 is provided on the head pipe 3 so as to be rotatable left and right. A front wheel 10 is supported at a lower portion of the front fork 9, and a handle 11 is provided at an upper portion.
Is attached. The engine 12 is placed in a space surrounded by the head pipe 2, the men frame 4, the upper down tube 5, the lower down tube 6, and the rear arm bracket 7.
The engine 12 is of a water-cooled type. A rear arm 14 is supported on the rear arm bracket 7 via a pivot shaft 13 so as to be able to swing up and down. The rear arm 14 is provided with a rear wheel 15.

A fuel tank 16 is disposed on the main frame 4, and a seat 17 is disposed on a seat rail 8 behind the fuel tank 16. A radiator cover 18 extending from both sides of the fuel tank 16 to both sides of the head pipe 3 is mounted, and side cowls 19 extending rearward from lower portions on both sides of the seat 17 are mounted.

[0010] Above the front side of the engine 12, the fuel tank 1
6, radiators 20 are arranged independently on the left and right sides, and cooling water that has cooled the engine 12 is sent thereto. The cooling water is cooled by heat exchange by running wind and returned to the engine 12 for circulation. Radiator 20 is protector 2
It is covered and protected by 1.

A rear pipe 30 is provided at the rear of the pair of left and right seat rails 8. The central portions of the pair of left and right seat rails 8 are connected by a cross member 31, and the front and rear are connected by a front frame 32 and a rear frame 33. On the rear frame 33, a rear side 34a of the bottom plate 34 of the seat 17 and a front side 35a of the rear fender 35 are attached. That is, a pair of left and right mounting projections 34b is formed on the rear side 34a of the bottom plate 34 of the seat 17. A pair of right and left mounting holes 35b is formed in the front side 35a of the rear fender 35.
Are formed, and the engagement protrusion 35c is provided between the mounting holes 35b.
Are formed.

The engagement projection 35c of the rear fender 35 is engaged with the engagement hole 33a of the rear frame 33 and temporarily fixed, and the mounting projection 34b of the bottom plate 34 of the seat 17 is fixed to the rear fender 35.
, The mounting projection 34b is applied to the rear frame 33, and the bolt 36 is attached from below to the mounting projection 34b.
And screwed in. Thereby, the rear side 34a of the bottom plate 34 of the seat 17 and the front side 35a of the rear fender 35
Can be easily and reliably assembled by the concave and convex engagement, and can be simply and accurately attached to the rear frame 33 with the two bolts 36. Both side portions of the rear fender 35 are attached to attachment portions 37 formed on the rear side portions of the left and right seat rails 8 with screws 38.

The bottom plate 34 of the seat 17 has a mounting projection 34b.
Is formed much larger than the diameter of the bolt 36. Therefore, even if a load is placed on the rear fender 35 such that the rear fender mounting portion 35e is pulled rearward, deformation of the rear fender mounting portion 35e can be suppressed to a small value.

Inside the rear portion of the rear fender 35, a rib 35d is formed from the outside in the vehicle width direction to the inside. In the rear fender 35 made of resin, the rigidity of the portion where the rib 35d is formed is improved, and the rear flasher 3
The mounting stay 40 of No. 9 is applied, the notch 40 a of the mounting stay 40 is engaged with the rib 35 d and positioned, and is fixedly fastened by the mounting screw 41 and the nut 42.

Since the rigidity of the rear fender 35 is improved by the rib 35d, the vibration of the rear flasher 39 during traveling can be reduced. Also, rear flasher 3
9 is mounted directly on the resin-made rear fender 35 by the mounting stay 40 instead of the frame, and the mounting of the rear flasher 39 is easy. Further, the positioning of the rear flasher 39 is performed by the rib 35d on the rear surface of the rear fender 35, and the number of the mounting screws 41 is one, so that the mounting of the rear flasher 39 is reliable and simplified. That is, the rib 35d has two functions of improving the rigidity of the rear fender 35 and positioning the rear flasher 39.

On the outside of the right seat rail 8, a blow-molded recovery tank 50 is provided.
The recovery tank 50 is covered with the side cover 19 by tightening and fixing the a and 50b with bolts 51 and 52. Front side 50c of recovery tank 50
Is connected to a hose 53 connected to the radiator 20, and cooling water overflowing due to thermal expansion is sent from the radiator 20 to the recovery tank 50. An injection cap 60 is provided on the upper part of the radiator 20. The injection cap 60 is removed, cooling water is injected, and the radiator 2
0 to supply cooling water.

An overflow hose 54 is connected to the recovery tank 50 so that the tank outlet 50d is directed toward the front of the vehicle. The overflow hose 54 is bent and extended toward the rear of the vehicle, and further bent and extended toward the front of the vehicle. Have been. The overflow hose 54 is formed of, for example, rubber or resin, and has a front bent portion 54.
a and the rear bent portion 54b may be formed at the time of molding. A portion 54c extending rearward between the front bent portion 54a and the rear bent portion 54b passes outside the injection cap 60 above the recovery tank 50. Therefore, the portion 54c extending rearward has an effect of preventing intrusion of muddy water and the like coming around the injection cap 60 from the outside of the recovery tank 50. Thereby, when the injection cap 60 is removed and replenished, foreign matter can be prevented from entering the recovery tank 50.

The rear bent portion 54b is locked by a notch 50b1 formed below the mounting portion 50b.
A portion 54d extending forward from the vehicle body 4b is positioned so as to close the gap between the inside of the recovery tank 50 and the seat rail 8, and is engaged with and held by a holding portion 50e provided on the recovery tank 50. The discharge port 54 e is extended forward and guided downward, and is held downward near the rear arm bracket 7. A portion 54d extending forward from the seat rail 8, the recovery tank 50, and the rear bent portion 54b prevents the mud and water from jumping from below during traveling.

As described above, the tank outlet 50d of the overflow hose 54 is connected to the front of the vehicle.
Even when the forward acceleration generated during braking or the like acts, the cooling water flowing out of the tank outlet 50d is prevented from flowing out at the front bent portion 54a of the bent portion toward the rear of the vehicle body, and further extends toward the rear of the vehicle body. The cooling water accumulated in 54c is offset by the forward acceleration acting in the direction opposite to the direction in which the cooling water flows out, so that leakage of the cooling water can be prevented. Further, since the overflow hose 54 does not use a check valve for preventing leakage of cooling water during braking or the like, transient pressure is not applied to the overflow hose 54 or the recovery tank 50, and the cost is low.

[0020]

As described above, according to the first aspect of the present invention, the tank outlet of the overflow hose is connected to the front of the vehicle. The cooling water flowing out is restricted from flowing out at the bent part toward the rear of the vehicle, and the cooling water remaining in the part extending toward the rear of the vehicle is offset by the forward acceleration in the direction opposite to the flowing out direction Because
Cooling water leakage can be prevented. Thereby, the vertical dimension of the recovery tank can be arbitrarily determined, and the degree of design freedom around the side cover increases. Further, since a check valve for preventing leakage of cooling water during braking of the overflow hose is not used, transient pressure is not applied to the overflow hose or the recovery tank, and the cost is low.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle.

FIG. 2 is a plan view of the motorcycle.

FIG. 3 is a plan view of a recovery tank unit.

FIG. 4 is a side view of a recovery tank unit.

FIG. 5 is a sectional view taken along the line VV of FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI of FIG. 3;

FIG. 7 is a diagram viewed from a direction A in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body 20 Radiator 50 Recovery tank 53 Hose 54 Overflow hose

Claims (1)

[Claims] A motorcycle provided with a radiator on a vehicle body, a recovery tank connected to the radiator by a hose, and an overflow hose connected to the recovery tank, wherein the overflow hose is connected to the recovery tank and a tank outlet is connected to the recovery tank. A motorcycle characterized in that it is connected forward, and the overflow hose is bent and extended toward the rear of the vehicle body and further bent and extended toward the front of the vehicle body.