Air guide structure for saddle type vehicle
An air guide structure for a saddle type vehicle for reducing the influence of a negative pressure on a rider. In an air guide structure for a motorcycle wherein a windscreen for the protection against air is provided on a front cover provided at a front portion of a vehicle body such that air is guided to the rear of the windscreen on the vehicle body to reduce a negative pressure to be generated behind the windscreen, an inlet port is provided between a central portion of a front end of the windscreen and the front cover. Further, a stepped portion that is formed stepwise in the forward and backward direction on an upper face of the front cover in the inside of the inlet port is provided, and a sectoral recessed portion is provided at a central portion of the stepped portion in the vehicle widthwise direction.
1. An air guide structure for a saddle vehicle wherein a windscreen is mounted on a front cover provided at a front portion of a vehicle body such that air is guided to the rear of the windscreen on the vehicle body to reduce a negative pressure to be generated behind the windscreen, comprising:
an inlet port provided between a central portion of a front end of the windscreen and the front cover;
a stepped portion is formed stepwise in a forward and backward direction on an upper face of the front cover in an inside of the inlet port; and
a recessed portion is provided at a central portion of the stepped portion in a vehicle widthwise direction;
wherein a flow of air is guided to a rear of the windscreen for reducing a negative pressure formed behind the windscreen.
2. The air guide structure for a saddle vehicle according to claim 1 , wherein an opening is provided on the front cover behind the recessed portion in such a manner so as to be directed rearwardly of the vehicle body.
3. The air guide structure for a saddle vehicle according to claim 1 , wherein side openings are provided at opposite end portions of the front cover in a vehicle widthwise direction, that are positions obliquely sidewardly and rearwardly of the recessed portion, in such a manner so as to be directed obliquely rearwardly and sidewardly of the vehicle body.
4. The air guide structure for a saddle vehicle according to claim 2 , wherein side openings are provided at opposite end portions of the front cover in a vehicle widthwise direction, that are positions obliquely sidewardly and rearwardly of the recessed portion, in such a manner so as to be directed obliquely rearwardly and sidewardly of the vehicle body.
5. The air guide structure for a saddle vehicle according to claim 1 , wherein a garnish that configures the front cover is fastened to the stepped portion.
6. The air guide structure for a saddle vehicle according to claim 2 , wherein a garnish that configures the front cover is fastened to the stepped portion.
7. The air guide structure for a saddle vehicle according to claim 3 , wherein a garnish that configures the front cover is fastened to the stepped portion.
8. The air guide structure for a saddle vehicle according to claim 3 , wherein the side openings include a plurality of fins directed in the vehicle widthwise direction.
9. The air guide structure for a saddle vehicle according to claim 1 , wherein the stepped portion is formed in an arc convex rearwardly as viewed in plan.
10. The air guide structure for a saddle vehicle according to claim 2 , wherein the stepped portion is formed in an arc convex rearwardly as viewed in plan.
11. The air guide structure for a saddle vehicle according to claim 3 , wherein the stepped portion is formed in an arc convex rearwardly as viewed in plan.
12. The air guide structure for a saddle vehicle according to claim 5 , wherein a fastening section provided on the stepped portion to the garnish overlaps with the windscreen as viewed in front elevation.
13. The air guide structure for a saddle vehicle according to claim 2 , wherein upper edges of opposite end portions of the stepped portion in the vehicle widthwise direction are formed at a highest position.
14. An air guide structure for a saddle vehicle comprising:
a windscreen is mounted at a front portion of a vehicle body;
an inlet port is provided between a central portion of a front end of the windscreen and a front cover, for guiding a flow of air to a rear of the windscreen;
a stepped portion is formed stepwise in a forward and backward direction on an upper face of the front cover in an inside of the inlet port; and
a recessed portion is provided at a central portion of the stepped portion in a vehicle widthwise direction;
wherein a flow of air is guided to a rear of the windscreen for reducing a negative pressure formed behind the windscreen.
15. The air guide structure for a saddle vehicle according to claim 14 , wherein an opening is provided on the front cover behind the recessed portion in such a manner so as to be directed rearwardly of the vehicle body.
16. The air guide structure for a saddle vehicle according to claim 14 , wherein side openings are provided at opposite end portions of the front cover in a vehicle widthwise direction that are positioned obliquely sidewardly and rearwardly of the recessed portion in such a manner so as to be directed obliquely rearwardly and sidewardly of the vehicle body.
17. The air guide structure for a saddle vehicle according to claim 14 , wherein a garnish that configures the front cover is fastened to the stepped portion.
18. The air guide structure for a saddle vehicle according to claim 16 , wherein the side openings include a plurality of fins directed in the vehicle widthwise direction.
19. The air guide structure for a saddle vehicle according to claim 14 , wherein the stepped portion is formed in an arc convex rearwardly as viewed in plan.
20. The air guide structure for a saddle vehicle according to claim 15 , wherein upper edges of opposite end portions of the stepped portion in a vehicle widthwise direction are formed at a highest position.