JPS61157433A - Tank in motor-cycle and the like - Google Patents

Abstract

PURPOSE:To provide a strength resistant to low temperature impacts to a tank while the latter sustains its transparency, and to make it possible to apply a desired color to the tank, by forming a tank with polypropylene added with a specific weight percent of a rubber component and a bit of a pigment. CONSTITUTION:A tank support member 18 coupled to a motor-cycle has a L-likely bent lower end section which is provided with a supporting ring 20 adapted to be fitted on a support shaft 19 projected form a reservoir tank 9. The material of a reservoir tank 9 is polypropylene added with 0.05 to 1wt% of rubber and a bit of a pigment. Accordingly, the transparency of the tank may be enhanced and is applied with a suitable color which is desirable in accordance with the coloring of surroundings and the condition of the position where the tank is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to tanks for motorcycles, such as oil tanks and cooling water reserve tanks.

[Conventional technology]

In motorcycles, various tanks are installed on the vehicle body, such as a reserve tank that is connected to the radiator and allows some of the cooling water and steam to escape when the radiator internal pressure rises, and an oil tank that stores oil for separate refueling. placed in an appropriate space. In order to meet various requirements, tanks of this type have conventionally been made of polyethylene (PR), which is cloudy in color.

[Problem that the invention seeks to solve]

However, in conventional tanks for motorcycles, etc. made of this type of polyethylene, because many parts are stored in a very restricted space, the tank is placed in a general location such as under the seat. There are times when I cannot be cast. For these reasons, if the tank is placed, for example, near the meter box, the cloudy white color of the tank will reflect light, impairing visibility in front of the vehicle while driving. On the other hand, when pigments are added without impairing visibility, there is a problem in that the tank becomes opaque, making it difficult to visually check the remaining amount of the contents.

In order to solve this problem, it may be possible to use transparent polypropylene as the material, but this would have the disadvantage of reducing the strength of the tank at low temperatures.

[Means for solving problems]

The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a tank for a motorcycle or the like in which the liquid level can be easily checked. The tank for a motorcycle or the like according to the present invention has a weight ratio of 0.
It is made of polypropylene (PP) to which 0.5 to 1% of a rubber component and a trace amount of pigment are added.

[Effect]

In the present invention, low-temperature impact strength is obtained while maintaining the transparency of a tank for a motorcycle or the like, and the tank is colored in a desired color.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a left side view showing a tank for a motorcycle or the like according to the present invention implemented as a cooling water reserve tank, FIG. 2 is a plan view of the same, and FIG. 3 is a right side view showing a motorcycle equipped with a reserve tank. In the top views, the reference numeral 1 in these figures indicates a frame. A front wheel 3 is rotatably suspended at the front of the frame 1 via a steering shaft tube and a front fork 2, and a rear wheel 4 is suspended at the rear. 5 is a cowling that covers the front of the frame 1 to reduce air resistance, and 6 is an engine body mounted on the frame 1. The engine main body 6 has a cooling water passage therein, and a water pump 7 for supplying cooling water into the engine main body 6 is disposed in the lower part. 8 is a radiator that radiates heat from cooling water heated by cooling.
The radiator 8 is connected to the suction side of the water pump 7 and to a cylinder cover into which cooling water that has circulated around the outside of the cylinder flows. In other words, the cooling water circuit is configured such that the cooling water, which has become high in temperature due to the heat of the engine body 6, is cooled by the radiator 8 and then returned to the inside of the engine body G by the water pump 7.

Reference numeral 9 denotes a reserve tank, which is arranged in the vicinity of the meter box 10 within the cowling 5 and is formed in a curved shape along the inner surface of the cowling 5. A water supply port l111 is integrally provided on the upper surface of the reserve tank 9, and a cap 13 is detachably attached to the water supply port 11 via a gasket 12. A pipe 15 communicating with the radiator 8 via a joint 14 is connected to the bottom surface. A breather pipe 16 is connected to the water supply port 11, and communicates with the pipe 15 in the middle.

17 is a display section that displays the amount of cooling water in the reserve tank 9, and displays the upper and lower limits of the optimum amount of water, and is provided on the inner surface facing the passenger, that is, on the left side, so that it can be easily checked. ing.

Reference numeral 18 denotes a tank support member connected to the motorcycle, and a support/receiving ring 20 into which a support shaft 19 protruding from the reserve tank 9 is fitted is provided at the lower end bent into an oval shape. . Further, a hook 22 for hooking a bracket 21 of the reserve tank 9 is provided at a position facing the upper edge of the front portion.

As a material for forming the reserve tank 9, polypropylene (PP) to which a rubber component of 0.05 to 1% by weight and a trace amount of pigment is added is used. Here, the pigment is appropriately selected depending on the conditions of the location where the tank is installed and the color of the surrounding area, and a predetermined amount is added. In this embodiment, the reserve tank 9 is disposed near the meter box 10, and since it is necessary to make it black to prevent light reflection, carbon blank is selected as the pigment. Polypropylene (PP) to which a rubber component of 0.1% by weight and carbon black as a pigment of 0.01% by weight is added is used. Also, if you want to place it on the side of the car body, for example, if you want to color it blue or red, as shown in the table below,
A cobalt blue pigment or an azo red pigment can be added.

In tanks for motorcycles and other vehicles constructed in this way, polypropylene (PP) is added with a rubber component of 0.05 wt% or more.
can improve the low-temperature impact strength of Furthermore, since the amount added is set to 1 wt% or less, transparent polypropylene (PP) does not become cloudy. In other words, polypropylene (PP) is designed to have improved mechanical strength while maintaining its transparent properties.

Therefore, the tank has improved transparency compared to conventional tanks made from polyethylene (PE).

Furthermore, since a small amount of pigment is added, the tank can be colored in a desired color depending on the conditions of the location where the tank is installed and the color of the surrounding area.

As described above, the present invention is made of transparent polypropylene (PP) with improved strength due to the addition of a rubber component. Therefore, tanks for motorcycles, etc. are made of transparent polypropylene (PP) with improved strength due to the addition of a rubber component. The present invention is not limited to a cooling water reserve tank, but can also be implemented in an oil tank, etc., and similar effects can be obtained.

According to experiments, polypropylene (PP) contains O,0
When 1wt% of carbon black is added, low-temperature impact strength can be obtained if the amount of rubber component added is 2.0wt%, but it becomes cloudy and transparency cannot be maintained, and the amount added is 0.01wt%.
It was found that when using wt%, although transparency was good, low-temperature impact strength could not be obtained.

〔Effect of the invention〕

As explained above, according to the present invention, a tank for a motorcycle or the like is formed from polypropylene (PP) to which a rubber component of 0.05 to 1% by weight and a trace amount of pigment are added. Low-temperature impact strength can be obtained while maintaining transparency, and it can be colored to a desired color.

Therefore, the internal visibility is improved, the liquid level can be easily checked, and the ease of inspection and maintenance is improved.

Moreover, since the color can be changed according to the installation position, an improvement in appearance can be expected.

[Brief explanation of drawings]

FIG. 1 is a left side view showing a tank for a motorcycle or the like according to the present invention implemented as a cooling water reserve tank, FIG. 2 is a plan view of the same, and FIG. 3 is a right side view showing a motorcycle equipped with a reserve tank. It is a front view. 3...Frame, 5...Cowling, 8...
・Radiator, 9... Reserve tank, 13...
·cap.

Claims (1)

[Claims] A tank for a motorcycle or the like made of polypropylene (PP) to which a rubber component of 0.05 to 1% by weight and a trace amount of pigment are added.