TH37285B - Scooter type vehicles - Google Patents

Abstract

DC60 (01/03/56) The aim is to efficiently utilize the limited space of the chassis to further increase the fuel tank capacity. In this scooter-type vehicle, the pair of left and right upper frame sections 113 extends rearward downwards from the header pipe 111, while the pair of left and right lower pipe sections 114 extends downwards from the header pipe 111 beneath the upper frame section 113. The lower end of the lower pipe section 114 extends rearward and connects to the lower part of the upper frame section 113 in a way that creates a significantly triangular space Sp1 when viewed from the side, surrounded by the upper frame section 113 and the lower pipe section 114. The fuel tank 230 tapers towards the sides. The upward-facing side of the top frame 113 and the downward-facing side of the 114 are positioned within the Sp1 space. The lower part of the fuel tank 230 is extended and covered by a removable underframe 143, which is positioned beneath the downward-facing side of the 114. The aim is to efficiently utilize the limited space of the chassis to further increase the fuel tank capacity. In scooter type vehicles 10, the left and right pairs of top frames 113 extend rearward downward from the header pipe 111, while the left and right pairs of downward-facing side pipes 114 extend downward from the header pipe 111 beneath the pair of top frames 113, and the lower end of the downward-facing side pipe 114 extends rearward and connects to the lower part of the pair of top frames 113 in a way that creates a significantly triangular Sp1 space when viewed from the surrounding side view. With the pair of upper frame 113 and the pair of lower pipes 114 rising up, the fuel tank 230, which tapers forward and upward along the line of the upper frame 113 and lower pipe 114, is positioned in the empty space of the Sp1. The lower part of the fuel tank 230 widens and is covered by the removable underframe 143, which is positioned beneath the lower pipes 114.

Claims (6)

1. Fuel Tank Structure: For scooter-type vehicles with the fuel tank positioned in front of the engine, the unique structure consists of a pair of upper left and right frames extending rearward downward from the header pipe, and a pair of lower left and right pipes extending downward from the header pipe beneath the upper frames. The lower ends of the lower pipes extend rearward and connect to the lower parts of the upper frames in such a way that a significantly triangular space, when viewed from the side, is enclosed by the upper frames and the lower pipes. The fuel tank, which tapers forward and upward along the line of the upper frames and lower pipes, is placed in this space. The lower part of the fuel tank is extended to a size that reaches below the lower pipes when viewed from the side, and this extended portion is covered by a removable underframe attached to the lower part of the lower pipes, and a rear heat shield which... The cover over the back surface of the expanded section will be positioned. 2. The fuel tank arrangement for the scooter type vehicle under claim 1 is characterized as follows: the fuel tank, including the filler cap, and a breather sub-tank provided on top of the fuel tank, and a vent hose, one end of which is connected to the breather sub-tank, extends along the axis of the fuel tank and passes between the left and right upper frames and between the left and right lower pipes. 3. The fuel tank arrangement structure for scooter vehicles under claim paragraph 2 is characterized by a bifurcated vent hose at one end. 4. The fuel tank structure for scooter vehicles under claim 1 is characterized by the rear heat shield being made of rubber. 5. The fuel tank arrangement for scooter vehicles under claim 1 or 4 shall be characterized by the provision of hooks for attaching the rear heat shield to the undercarriage. 6. The fuel tank arrangement for scooter vehicles under Representation 1 is characterized by an undercarriage consisting of left and right side components extending downward along corresponding pipes, and at least one transverse component extending between the left and right side components.