JP2005047502A - Cowling of motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cowling of a motorcycle for improving an aerodynamic characteristic and travel stability without increasing front projection area of a screen. <P>SOLUTION: The cowling covers a rider in a forward tilting riding attitude in the front view of the vehicle, the screen 11 lower than the height of a helmet is disposed just in front of the helmet 9 in a forward tilting riding attitude in the side view of the vehicle, and the cowling is attached so that the screen partially overlaps on the front surface side of the helmet. A front cowling 10 swells a curved surface radius of the screen as a projecting surface having a radius smaller than the curved surface radius of a screen part corresponding to a shoulder section of the rider in the front view of the vehicle. The front part of the handle bar 5 is constituted in the maximum width, a border line of a vehicle part in contact with the rider in the forward tilting riding attitude is decreased forward in the side view of the vehicle, a seat cowl 13 lower than the height of the top of the screen 11 is disposed on the backside of the vehicle, and the projecting surface 14 whose height is decreased toward the back of the vehicle is disposed on the upper surface of the seat cowl. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cowling for a motorcycle.

  In a motorcycle, particularly a motorcycle with an emphasis on high-speed driving, as shown in FIG. 6, it is covered with a front cowling 4 from the front side of the head pipe 2 of the body frame 1 to both sides of the portion where the engine 3 is mounted. The front cowling 4 is integrally provided with a screen 6 above the handle 5. As shown in FIG. 7, the rider 8 is covered with the front cowling 4 and the screen 6 when the motorcycle is running, and the aerodynamic characteristics are improved by the front cowling 4.

  However, the conventional front cowling 4 is basically composed of a three-dimensional curved surface as shown in FIG. 8, and has a single spherical shape. Therefore, the position of the screen 6 is placed on the body of the rider 8. Together, the helmet 9 protrudes greatly from the top of the screen 6 and a turbulent flow (separation) a is generated in front of the helmet 9 as shown in FIG. Further, when the height of the screen 6 is adjusted to the height of the helmet 9 of the rider 8, there is a problem that the turbulent flow behind the upper end of the screen 6 increases, the front projection area increases and the aerodynamic characteristics are remarkably lowered. there were.

  The present invention has been made in consideration of the above-described circumstances, and does not increase the front projected area of the screen, eliminates streamline separation, improves aerodynamic characteristics, and improves running stability. The purpose is to provide a two-wheeled cowling.

  In order to solve the above-described problem, the cowling of the motorcycle according to the present invention covers the front side of the head pipe of the body frame and both sides of the engine mounted on the body frame, as described in claim 1. A screen that covers the rider in the forward leaning posture as viewed from the front of the vehicle, but is lower than the top of the helmet immediately before the rider's helmet in the forward leaning posture as viewed from the side of the vehicle. In the cowling of a motorcycle equipped with a front cowling so that the screen and the front side of the helmet of the rider partially overlap each other, the front cowling is located in front of the rider's helmet in a front view of the vehicle. The curvature of the screen part corresponding to the shoulder of the rider is the curved radius of the screen at the center part in the vehicle width direction. A vehicle body that bulges upward as a raised surface having a diameter smaller than the radius, and has the front of the steering wheel at the maximum width of the front cowling so that the rider can come into contact with the rider when the rider assumes a forward leaning posture in a side view of the vehicle. The contour line of the part is lowered forward, and the handle gripped by the rider is set to a height lower than the contour line on the ground surface side, and on the vehicle rear side of the rider, from the ground surface compared to the top of the screen. A seat cowl having a low height is disposed, and a raised surface whose height decreases toward the rear of the vehicle is disposed on the upper surface of the seat cowl.

  In addition, in order to solve the above-described problem, the cowling of the motorcycle according to the present invention is provided on the front side of the head pipe of the body frame and on both sides of the engine mounted on the body frame, as described in claim 2. Covering and covering the rider in the forward leaning posture in front view of the vehicle, while the height of the top of the helmet is just before the rider's helmet in the forward leaning posture in vehicle side view In a cowling of a motorcycle having a low screen and a front cowling so that the screen and the front side of the rider's helmet partially overlap each other, the front cowling is a front view of the rider's helmet when viewed from the front of the vehicle. The curved radius of the screen at the front in the vehicle width direction is set to the curved surface half of the other part of the front cowling. When the front cowling covers the rider in the forward leaning posture from the front side of the vehicle, and the rider assumes the forward leaning posture as seen from the side of the vehicle. The contour line of the vehicle body part that comes into contact with the rider is lowered forward, and the handle gripped by the rider is set to a height lower than the above contour line on the ground surface side, and the driving wind is generated by the front cowling and the rider in the forward leaning posture. It is designed to be streamlined.

  Further, in order to solve the above-described problem, the cowling of the motorcycle according to the present invention is provided with a front side of the head pipe of the body frame and both sides of the engine mounted on the body frame as described in claim 3. Covering and covering the rider in the front leaning posture in front view of the vehicle, a screen that is lower than the top of the helmet immediately before the rider in the forward leaning posture in side view of the vehicle A front cowling is mounted so that the screen and the front side of the rider's helmet overlap with each other, and a seat cowl whose height from the ground surface is lower than the apex of the screen on the rear side of the rider's vehicle. In the cowling of the mounted motorcycle, the vehicle width direction central portion located in front of the rider's helmet in front view of the vehicle. The curved surface radius of the clean surface bulges upward as a substantially spherical raised surface having a curved surface radius smaller than the curved surface radius of the screen portion corresponding to the shoulder portion of the rider, and in the vehicle side view, the central portion in the vehicle width direction. A vehicle body that comes into contact with the rider when the rider assumes a forward leaning posture, while forming a curved surface that bulges from an extension line of the screen surface at a portion corresponding to the shoulder portion of the rider and then faces upward. Pass the rider's helmet in a state where the contour line of the part is lowered forward and the handle gripped by the rider is at a height lower than the contour line on the ground surface side, and the traveling wind is in a forward leaning posture from the screen. The vehicle is guided to flow through the seat cowl via the rider's back.

  Furthermore, in order to solve the above-described problem, the cowling of the motorcycle according to the present invention has, as described in claim 4, a curved vehicle body portion that contacts the abdomen of the rider in a side view of the vehicle. It is a thing.

  According to the cowling of the motorcycle according to the present invention, the raised surface provided on the screen of the front cowling can smoothly guide the air flow to the helmet, and the occurrence of turbulence at the front of the helmet is eliminated. Streamline separation can be eliminated to improve running stability, and aerodynamic characteristics during running can be greatly improved, and the maximum speed can be increased.

  An embodiment of a cowling for a motorcycle according to the present invention will be described with reference to the accompanying drawings.

  In explaining the cowling of the motorcycle, parts common to the cowling shown in FIGS. 6 to 8 will be described using the same reference numerals.

  FIG. 1 shows a cowling of a motorcycle according to the present invention. Reference numeral 10 in the figure denotes a front cowling that covers the front side of a vehicle body frame 1. The front cowling 10 is integrally formed with side portions 10b and 10b covering from the front portion 10a covering the front of the head pipe 2 of the vehicle body frame 1 to the side of the engine 3 portion, and above the front portion 10a. Is integrally provided with a screen 11.

  The front cowling 10 covers the front of the head pipe 2 of the body frame 1 and both sides of the engine 3, while the rider 8 in a forward leaning posture is seen from the front side of the vehicle as shown in FIG. Covering from. The maximum width of the front cowling 10 is the front part of the handles 5 and 5. When the rider 8 takes a forward leaning posture while covering the hand of the rider 8 riding the motorcycle from the front, the front cowling 10 and its The screen 11 covers the rider 8 entirely except for the top of the helmet 9.

  As shown in FIG. 2, the screen 11 has a width (width in the vehicle width direction) substantially corresponding to the width between the shoulders of the rider 8, and when the rider 8 takes a forward leaning posture, It is arranged at a corresponding position. As shown in FIG. 4, the screen 11 provided on the upper portion of the front cowling 10 and the front side of the helmet 9 of the rider 8 have a partially overlapping positional relationship when the rider 8 takes a forward leaning posture in the vehicle side view. It is like that. For this reason, when the rider 8 takes the forward leaning posture, a large gap is not formed between the helmet 9 and the shoulder of the rider 8 and the front cowling 10 and the screen 11.

  Further, when the rider 8 takes a forward leaning posture, the contour line of the vehicle body part contacting the rider 8 is lowered forward, and the handle 5 held by the rider 8 is lower on the ground surface side than the contour line of the vehicle body part. The height is set. And, when the vehicle body portion that contacts the abdomen of the rider 8 is a curved shape in a side view of the vehicle, the vehicle body portion of a smooth curved shape is in contact with the abdomen of the rider 8, and the rider 8 takes a forward leaning posture, Consideration is made so that abnormal pressing force does not act on the abdomen of the rider 8.

  The shape of the screen 11 is a part of the basic curved surface shape as the front cowling 10, and has a curved surface shape different from the basic curved surface shape at a position above the screen 11 in a portion located in front of the helmet 9 of the rider 8. A substantially spherical raised surface 12 is integrally formed (or may be attached as a separate body). The configuration of the raised surface 12 is a shape that protrudes rearward and upward so as to bulge upward from the curve of the upper end edge 11a of the screen 11 as seen from the front, as shown in FIG. As shown in FIG. 3, the surface of the screen 11 bulges out from a streamlined extension line, and is formed to be a curved surface facing slightly rearward and upward and toward the upper surface of the helmet 9.

  That is, the screen 11 has a curved surface radius of the screen portion corresponding to the shoulder of the rider 8 (curvature radius in the vehicle width direction and vehicle longitudinal direction) of the curved raised surface 12 corresponding to the central portion in the vehicle width direction. large. On the contrary, the raised surface 12 of the screen 11 has a curved surface radius smaller than the curved surface radius of the other screen portions, smoothly bulges upward from the extended line of the surface of the screen 11 and faces upward. In the helmet 9 of the rider 8, when the rider 8 takes the forward leaning posture, the front side of the helmet 9 approaches the raised surface 12 of the screen 11, and the air flow (running wind) from the raised surface 12 of the screen 11 to the helmet 9 occurs. Can form a streamline that smoothly guides.

  Therefore, as shown in FIG. 4, streamlines are smoothly connected from the surface of the screen 11 to the upper surface of the helmet 9 of the rider 8, and no abrupt turbulence occurs at the front portion of the helmet 9, so that the aerodynamic characteristics are greatly improved.

  When the rider 8 takes the forward leaning posture, the surface of the screen 11 during traveling is provided with the raised surface 12 having a curved shape different from the basic curved shape of the screen at the vehicle width direction central portion of the screen 11 positioned in front of the helmet 9. From this, turbulence (peeling) does not occur in the streamline of air flowing from the front to the front of the helmet 9, and the aerodynamic characteristics are improved.

  On the vehicle rear side of the rider 8, a seat cowl 13 having a lower height from the ground surface than the top of the screen 11 is disposed. A raised surface 14 whose height decreases toward the rear of the vehicle is disposed on the upper surface of the seat cowl 13.

  In addition, as shown in FIG. 5, if a raised surface 14 corresponding to the raised surface 12 in the front-back direction is provided at the upper front position of the seat cowl 13 constituting the rear cowling of the motorcycle, As shown in FIG. 4, the flow of air that has flowed through the back of the rider 8 is not disturbed on the seat cowl 13, but is guided backwards in a streamlined manner, so that the aerodynamic characteristics can be further improved. .

  In the cowling of the motorcycle, as shown in FIG. 4, the traveling is guided from the front cowling 10 to the seat cowl 13 from the back side of the rider 8 through the screen 11, the raised surface 12, and the helmet 9 of the rider 8. The wind is guided in a smooth streamline. Therefore, the traveling wind can be smoothly guided from the front cowling 10 to the seat cowl 13, and the occurrence of turbulent flow (separation) due to the entrainment of the traveling wind with the screen 11 in front of the helmet 9 can be effectively performed. Can be suppressed.

  Further, the traveling wind that has passed through the screen 11 is guided to the back side of the rider 8 and acts to press the rider 8 against the ground surface side, thereby improving the running stability. At that time, the rider 8 taking the forward leaning ride posture constitutes a part of the flow straightening member with respect to the flow of the traveling wind, so that not only simply reducing the air resistance but improving the aerodynamic characteristics, the maximum speed Can be smoothly increased.

  According to the cowling of the motorcycle, the raised surface 12 for smoothly guiding the air flow reaching the helmet 9 of the rider 8 to the screen 9 of the front cowling 10 is provided on the front of the helmet 9. Generation of turbulent flow is eliminated, streamline separation is eliminated to improve running stability, aerodynamic characteristics during running can be greatly improved, and the maximum speed can be increased.

1 is a side view of an entire motorcycle showing an embodiment of a cowling of the motorcycle according to the present invention. The front view at the time of driving | running | working of the motorcycle which attached the cowling of the motorcycle concerning this invention. The perspective view which shows the front cowling which covers the vehicle body front part of the two-wheeled motor vehicle shown by FIG. The side view which shows the state of the streamline at the time of driving | running | working of a motorcycle. FIG. 5 is a perspective view of the seat cowl shown in FIGS. 1 and 4. The side view which shows the state of the streamline at the time of driving | running | working of the two-wheeled motor vehicle provided with the conventional cowling. The front view at the time of driving | running | working of the two-wheeled motor vehicle which attached the conventional front cowling. The perspective view which shows the front cowling shown by FIG.

Explanation of symbols

1 Body frame 3 Engine 4, 10 Cowling 6, 11 Screen 8 Rider 9 Helmet 12 Raised surface 13 Seat cowl 14 Raised surface

Claims (4)

Covers the front of the body frame head pipe and both sides of the engine mounted on the body frame to cover the rider in the forward leaning posture when viewed from the front of the vehicle, while taking the forward leaning posture when viewed from the side of the vehicle. A motorcycle equipped with a front cowling so that the screen and a rider's helmet front side partially overlap each other with a screen lower than the top of the helmet in front of the rider's helmet. In cowling,
The front cowling is, when viewed from the front of the vehicle, the curved surface radius of the screen in the vehicle width direction central portion located in front of the rider's helmet as a raised surface having a smaller diameter than the curved radius of the screen portion corresponding to the shoulder of the rider. With the bulge formation, the front of the steering wheel is configured to have the maximum width of the front cowling, and when viewed from the side of the vehicle, the contour line of the vehicle body part that comes into contact with the rider when the rider takes the forward leaning posture is lowered forward. In addition, the handle that the rider grips has a height lower than the contour line on the ground surface side, and a seat cowl that is lower from the ground surface than the top of the screen is disposed on the rear side of the rider's vehicle. A cowling for a motorcycle, wherein a raised surface whose height decreases toward the rear of the vehicle is disposed on the upper surface of the seat cowl. Covers the front of the body frame head pipe and both sides of the engine mounted on the body frame to cover the rider in the forward leaning posture when viewed from the front of the vehicle, while taking the forward leaning posture when viewed from the side of the vehicle. A motorcycle equipped with a front cowling so that the screen and a rider's helmet front side partially overlap each other with a screen lower than the top of the helmet in front of the rider's helmet. In the cowling, the front cowling is, as viewed from the front of the vehicle, upward as a raised surface in which the curved radius of the screen in the vehicle width direction central portion located in front of the rider's helmet is smaller than the curved radius of other portions of the front cowling. Rider in a state where the front cowling has a forward leaning posture Cover from the front side of the vehicle, and when viewed from the side of the vehicle, when the rider takes a forward leaning posture, the contour line of the vehicle body part that comes into contact with the rider is lowered forward, and the handle that the rider grips is more than the above contour line. A motorcycle cowling characterized by having a low height on the ground surface side and guiding the running wind in a streamline manner by a front cowling and a rider in a forward leaning posture. Covers the front of the body frame head pipe and both sides of the engine mounted on the body frame to cover the rider in the forward leaning posture when viewed from the front of the vehicle, while taking the forward leaning posture when viewed from the side of the vehicle. A screen with a height lower than the top of the helmet is disposed immediately before the rider in the state of being in a state of being attached, and a front cowling is attached so that the screen and the helmet front side of the rider overlap, and further on the vehicle rear side of the rider. In a cowling of a motorcycle equipped with a seat cowl that is lower in height from the ground surface than the top of the screen, the curved surface of the screen at the center in the vehicle width direction located in front of the rider's helmet when viewed from the front of the vehicle A substantially spherical surface with a radius of curvature smaller than the radius of curvature of the screen part corresponding to the shoulder of the rider. Bulges upward as a raised surface of the vehicle, and in the vehicle side view, the screen in the central part in the vehicle width direction bulges from the extended line of the screen surface of the part corresponding to the shoulder of the rider and faces upward While forming a curved surface, when the rider takes a forward leaning posture, the contour line of the vehicle body part that comes into contact with the rider is lowered forward, and the handle that the rider grips is lower to the ground surface side than the contour line The two-wheeled motorcycle which is guided so as to pass through the rider's helmet in a state where the running wind is inclined forward from the screen and to flow to the seat cowl via the back of the rider. Car cowling. The motorcycle cowling according to any one of claims 1 to 3, wherein a vehicle body portion that contacts the abdomen of the rider is curved in a side view of the vehicle.

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