JPS5845939Y2 - Scooter type motorcycle engine cooling air induction device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an engine cooling air induction device for a scooter type motorcycle.

Generally, on a scooter-type motorcycle, the engine is located below the seat, and there is a fuel tank nearby, and there is a cover plate on the front that extends to the footrest, so the engine is less likely to be exposed to the running wind and is cooled by natural air. This is not possible, so forced air cooling is used.

However, with forced air cooling, the cylinder part of the engine is covered with a cover, a fan is attached to the crankshaft, and the fan's air is guided into the cover to cool the cylinder. Parts are required to attach them, and there are problems such as an increase in the number of parts and a significant increase in cost.

Furthermore, in order to effectively perform natural air cooling in a scooter or the like, it has been proposed to form an air guide path by bending a longitudinally extending groove-shaped portion having a cross-sectional opening in the vehicle body cover.

However, in the case of a scooter-type vehicle having a nearly flat footrest, it is almost impossible to curve the vehicle body cover to form a groove-like portion that is sufficient to send sufficient cooling air.

In view of these points, this invention was developed so that the engine can be sufficiently cooled by natural air cooling, and there is no need to form a high protrusion on the footrest.The invention will be implemented with reference to the drawings below. Let's discuss an example.

In the figure, reference numeral 1 branches into two parts from the head pipe and descends downward and rearward, forming a lower horizontal part that extends horizontally and parallel to each other from the lower end of the sled, and further rises rearward and upward in front of the engine, which will be described later, and then becomes horizontal. It is a frame pipe that extends rearward and constitutes the vehicle body frame, and the frame pipe 1 includes, from the vicinity of the front end to the lower horizontal part,
A base plate 4 continuing from the front cover 2 to the footrest part 3 is placed and fixed.

Further, at the lower part of the footrest part 3, both side edges of the guide plate 5 are fixed to the lower side of the left and right frame pipes 1 of the lower horizontal part, and the footrest part 3 of the base plate 4 is fixed to the lower side of the left and right frame pipes 1 of the lower horizontal part. Guide plate 5. A wind barrel 6 is formed by the left and right frame pipes 1.

A cylinder 8 of an engine 7 is arranged behind this wind cylinder 6.

When the car is driven, wind from the vehicle hits the front cover 2, flows downward along the front cover 2, is received by the tip of the guide plate 5, and is guided into the wind barrel 6.

Therefore, the traveling wind introduced into the wind cylinder 6 hits the cylinder 8 at the rear, and the cylinder 8 is sufficiently cooled.

As explained above, this invention is based on an engine cooling air induction device for a scooter-type motorcycle whose body frame is composed of frame pipes. Place the footrest on the base plate, fix both sides of the guide plate to the lower side of the frame pipe on the horizontal part, and configure the wind trunk by the footrest on the base plate, the guide plate button, and the left and right frame pipes. However, since the engine cylinder is placed behind the wind cylinder, the wind cylinder guides the wind toward the engine even though the engine is at the rear, allowing the engine cylinder to be sufficiently cooled by the wind. .

Furthermore, by effectively utilizing the left and right frame pipes and simply attaching a guiding plate to the lower side of the frame pipes, a wind cylinder that can sufficiently guide running wind to the engine section can be constructed. I can do it.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a partially front view enlarged as viewed from arrow A in FIG. DESCRIPTION OF SYMBOLS 1... Frame pipe, 2... Front cover, 3... Footrest, 4... Base plate, 5... Guidance plate, 6... Wind barrel, 7... Engine, 8 ···Cylinder.

Claims (1)

[Scope of utility model registration request] A lower horizontal part is formed that branches into two parts from the head pipe and descends downward and rearward, and extends horizontally and parallel to each other from the lower end of the lower horizontal part.Furthermore, a frame pipe that rises rearward and upward in front of the engine and then extends horizontally rearward forms a frame pipe that extends horizontally to the rear. In an engine cooling air induction device for a scooter-type motorcycle that has a frame, a plywood footrest extending from the front cover to the footrest is placed on the frame pipe in the lower horizontal part, and the Both edges of the guide plate are fixed to the lower side of the frame pipe, and the footrest of the base plate, the guide plate button, and the left and right frame pipes constitute a wind body, and the engine cylinder is attached behind the wind body. An engine cooling air induction device for a scooter type motorcycle, characterized in that: