Honda Giken Kogyo Kabushiki Kaisha

Hirofumi Fukunaga

Hiroaki Hasumi

Yoshiyuki Kurayoshi

Noriyoshi Tsutsui

Kouji Shiratsuchi

Mitsuru Yokoyama

When a fuel tank is supported rotatably, one end side of the fuel tank must be fixed by a lock mechanism. Although the background art engaging structure is simple and convenient, when the lock mechanism cannot be provided due to space limitations, a rotating support structure cannot be employed. An engaging member is provided on the front portion of the fuel tank and is inserted from the rear side to be engaged with a retaining member and to be pulled rearwardly for disengagement. A fuel tank is provided at a rear end thereof with a hinge. A bolt relatively moving in a guide groove formed in a side plate of the hinge is supported on a collar fixed to a seat rail. The hinge is slideable and rotatable.

Structure for attaching motorcycle fuel tank

A more rigid front and rear half sections of the frame that easily sets the joint rigidity of the rear half section of the frame with respect to the front half section of the frame. A vehicle frame of a motorcycle includes a pair of right and left main frames extending towards the rear from the head pipe, a lower cross member mounted between the rear ends of the right and left main frames, one center frame extended downwardly from the lower cross member, and an engine mounting bracket jointed to the lower end of the center frame. The center frame is provided with a pivot, to which the rear swing arm is vertically swingably attached.

Vehicle frame structure of motorcycle

A steering system of a motorcycle in which a top bridge is rotatably attached to a head pipe. An approximately flat plate handle bracket is attached to the top bridge through cushioning members. The flat plate handle bracket covers substantially the entire upper surface of the top bridge. Right and left handlebars are attached to the handlebar bracket.

Steering system for a motorcycle

A cooling fan arrangement for a motorcycle having a radiator mounted on a left or right side of a water-cooled engine. The cooling fan is provided between the engine and the side-mounted radiator. The cooling fan arrangement efficiently cools the radiator by blasting cooling air from the engine side to radiator side without degrading the appearance of the motorcycle.

Radiator cooling fan configuration for motorcycles

To increase the surface area of an oil cooler and improve the cooling efficiency of an engine for a motorcycle, dual radiators are mounted on the body frame on both right and left sides of a water-cooled engine. Both radiators are inclined relative to a center line of the motorcycle with the larger space between the top ends thereof than the space between the bottom ends thereof on both sides of the engine. Also, the forward portions of the radiators project forwardly from the front end of the engine. An air-cooled oil cooler is provided at the upper space between both radiators in front of the engine and extends laterally across the width of the engine. Furthermore, a cooling system incorporates the radiator and oil cooler configuration.

Radiator and oil cooler configuration structure for motorcycles

A vehicle assembly having a front fender mounting structure, a rear fender mounting structure, a cowling and fuel tank assembly structure and an engine intake structure. The front fender mounting mechanism includes sides plates associated with the front fender and a bracket installed on a front fork which are fastened together by bolts. The bolts cooperate with nuts which are elastically retained by means of nail pieces extending inwardly from the inside surface of the side plate sections of the front fender. A rear fork cover section of a rear fender and a chain case are fastened together by screws to a boss formed on a rear fork of the vehicle. The rear fender and the rear fork appear as if they are formed in a single body through this mounting. On the upper cowling of the vehicle, bosses are formed which extend inwardly and receive elastic members. A fuel tank includes holes extending downwardly therefrom to receive the bosses and elastic members. The upper cowling is assembled from two halves and during assembly the bosses are positioned with the fuel tank so as to compress the elastic members. A rubber sheet is installed between the engine and the air cleaner of the vehicle and is retained by a stay extending from the vehicle body near the opening of the air inlet duct.

Front fender mounting structure

A motorcycle is provided with an easily assembleable rear fender and cowling structure allowing front and rear parts of the fender to be secured together with the cowling fixed to an upper part of the front fender by locking surfaces. The construction reduces the number of parts of the assembly and permits better production efficiency, while utilizing the dead space formed as a storage compartment behind the motorcycle seat.

Growing community of inventors

Saitama, Japan

Hirofumi Fukunaga