JP2687373B2 - Tank attachment device for motorcycles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a tank attachment device for a motorcycle such as a cooling water reservoir tank and an oil tank having a relatively small capacity. . (Prior Art) A motorcycle requires an oil tank for supplying lubricating oil to a mounted engine, and a cooling water reservoir tank when the engine is water-cooled. These tanks have a small capacity, and conventionally, they are generally arranged below a fuel tank or a seat. However, with such an arrangement, on the one hand, it is difficult to meet the demands for increasing the capacity of the fuel tank and increasing the volume of the air cleaner placed under the fuel tank. The capacity of the fuel tank is inevitably increased as the mileage is lengthened and the engine is enlarged, and the volume of the air cleaner is increased in order to increase output and prevent noise. In addition, the seat needs to have a low seat height in consideration of foot landing, and the space at the center of the vehicle body becomes more and more cramped. (Problems to be Solved by the Invention) As described above, in the motorcycle, since the oil tank and the cooling water reservoir tank are arranged under the fuel tank and the seat, the capacity of the fuel tank and the air cleaner is increased and the seat height is increased. In view of the problem that it does not meet the requirement of lowering to 4, the present invention moves the arrangement of these tanks to other positions to meet the demand for large capacity of fuel tanks and the like.
An object of the present invention is to provide a tank attachment device for a motorcycle that is convenient for tanks and that improves the running performance of the vehicle. [Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the tank attachment device for a motorcycle according to the present invention has a seat rail extending from the rear upper end of the tank rail to the other end. The pillion seat rails are extended further rearward so that the main seat and the pillion seat that can be opened and closed are arranged forward and backward, and the storage box formed on the upper surface of the rear fender is arranged under the pillion seat. A series of body covers that cover the rear side of the body cover are formed with bulging portions on both the left and right sides, and a cooling water reservoir tank and an oil tank are provided inside these bulging portions and outside the pillion footrest bracket that hangs from the seat rail. They are arranged symmetrically, and at least one of the tanks has an inlet port projecting from the bottom of the container box. In which was formed. (Operation) In the tank attachment device for the motorcycle, the cooling water reservoir tank and the oil tank are respectively provided in the bulging portions on the left and right sides of the rear half of the body cover and outside the pillion footrest brackets that hang down from the seat rails. The symmetrical arrangement allows stable running and improved running performance, while the pillion footrest bracket can be formed in a straight line, which saves the bracket material, has greater rigidity, and is lighter than the curved bracket. Can be achieved. The inlet protrudes into a part of the storage box, and it is easy to open the pillion sheet and supply cooling water or oil. The body cover under the pillion seat swells to both sides, but does not interfere with the passenger's legs. Also, since there are no other parts in this part and the height of both tanks can be set relatively freely, it is easy to accommodate the height of the radiator and engine. In this way, open a space under the fuel tank and under the seat,
The capacity of the fuel tank and air cleaner can be increased and the seat height can be reduced, which is useful for improving various performances as a motorcycle. (Embodiment) A description will be given below with reference to the drawings showing an embodiment of the present invention. A tank rail 3 extends rearward from a head pipe 2 that steerably supports the front wheels 1, and a down tube 4 hangs downward to connect them rearward to construct a main frame 5. An engine 6 is mounted in the main flakes 5, and a fuel tank 7 is mounted on the tank rail 3. A swing arm 8 extends rearward from the lower rear end of the main frame 5 and suspends a rear wheel 9. In addition, seat rail 10 from the upper rear of the main frame 5 to the rear
And a rear end of the support tube 11 is supported by the support tube 11. The seat rail rear end 10a is provided so as to be curved upward. A seat 12 is placed on the seat rail 10. A V-shaped pillion footrest bracket 13 that hangs downward is fixed by attachment bolts 14 at the connecting portion between the seat rail 10 and the support tube 11 and at the rear end of the seat rail, and a passenger footrest 15 is attached to the lower end of the bracket 13. Muffler 16 is attached. Further, a pillion seat rail 17 supported by a support tube 18 is integrally fixed to the bracket 13 to support a pillion seat 19. The pillion seat 19 is set to be openable and closable. 20 indicates a damper rubber of the pillion seat 19, and 21 indicates a support bracket that can be locked. A rear fender 22 is attached to the pillion seat rail 17, and a storage box 23 formed on the upper surface of the rear fender 22 is located below the pillion seat 19. A stop lamp 24 and a flasher lamp 25 are arranged on the rear fender 22. 26 shows another rear fender. From the lower edge of the rear end of the fuel tank 7 to the lower edges of the seat 12 and the pillion seat 19, the lower part thereof is a body cover.
27 is put on. The body cover 27 is formed such that the lower half of the rear half portion bulges outward. Cooling water reservoir tanks 29 and oil tanks 30, which are long and flat in the front and rear direction, are symmetrically arranged in the bulged portions 28 on both sides. The inlets 29a, 30a of both tanks 29, 30 are introduced into the rear fender 22 and provided on the bottom surface of the storage box 23 so as to project.
The cooling water reservoir tank 29 and the oil tank 30 are
The cooling water circulation system including the radiator 31 and the lubricating system of the engine 6 are connected to each other via a pipe (not shown). In this way the cooling water reservoir tank under the pillion seat 19
29 and the oil tank 30 are compactly arranged. Since it is placed symmetrically, it stabilizes the running of the motorcycle in a well-balanced manner. [Object of the Invention] As described above, the tank attachment device for a motorcycle according to the present invention forms a bulging portion that bulges to the left and right sides in the rear half of a series of body covers that cover under the seat and the pillion seat. A cooling water reservoir tank and an oil tank are symmetrically housed inside these bulges and outside the pillion footrest bracket hanging from the seat rail, and at least one of the inlets of both tanks is arranged under the pillion seat. The storage box is projected on the bottom of the storage box, and both tanks are symmetrically balanced under the pillion seat to be compactly arranged to improve driving stability and driving performance, while maintaining space in the center of the vehicle body. Can be secured, and the volume of the fuel tank and the air cleaner can be increased, and the seat height can be reduced. In addition, the cooling water reservoir tank and the oil tank, which are symmetrically arranged in the bulging parts on the left and right sides of the rear half of the body cover, are located outside the pillion footrest bracket, so that the pillion footrest bracket can be formed in a straight line. As compared with the curved one, the bracket material can be saved, the rigidity is large, and the weight can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a motorcycle showing an embodiment of the present invention,
FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is an exploded perspective view showing the frame structure of the pillion seat rail portion. 3 …… Tank rail, 10 …… Seat rail, 12 …… Seat, 17 …… Pillion seat rail, 19 …… Pillion seat, 22 …… Rear fender, 23 …… Storage box, 27 ……
Body cover, 28 ... bulge, 29 ... cooling water reservoir tank, 30 ... oil tank.

Claims (1)

(57) [Claims] A seat rail extends from the rear upper end of the tank rail to the rear, and a pillion seat rail extends further to the rear to arrange the main seat and the pillion seat that can be opened and closed in the front and rear, and the pillion box formed on the upper surface of the rear fender. A pillion that is disposed below the seat and has bulging portions on both left and right sides formed in the rear half of a series of body covers that covers the main seat and the lower part of the pillion seat, and that is hung inside these bulging portions and from the seat rail. A cooling water reservoir tank and an oil tank are symmetrically arranged outside the footrest bracket, and at least one of the tanks has an inlet port projecting from the bottom of the container box. Wearing device.