Straddle Vehicle Seat Load Distribution via Intermediary Member
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Solution Overview
Problem
Conventional straddle type vehicles lack an effective structure to receive the load from a rider's seat without reducing the capacity of the housing box, as existing designs often require forming the load-receiving part into an opening, which compromises the box's capacity.
Innovation Solution
A straddle type vehicle with a load receiving member that matches the shape of the fuel tank, featuring a design with a space between the load receiving member and the tank to prevent contact, multiple openings, and a seat locking mechanism integrated with mounting parts on the vehicle body frame, allowing the load to be distributed without compromising the box's capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the load receiving part is formed into an opening of the housing box, then the load acting on the seat can be received, but the capacity of the box becomes small
Solution Approach 1:
The load receiving function is segmented from the housing box by introducing a separate load receiving member. This member is disposed in front of the housing box and has a shape corresponding to the fuel tank, allowing it to receive the seat load independently while the housing box maintains its full capacity for storage.
Solution Approach 2:
The load receiving member acts as an intermediary structure between the seat and the housing box/fuel tank. It receives the load from the seat and transmits it to the vehicle body frame through mounting parts, preventing direct contact between the seat load and the housing box, thereby preserving box capacity while maintaining load receiving capability.
2Strength
If the load receiving member covers the tank, then the load can be received, but the load receiving member may contact the tank when load is applied
Solution Approach 1:
A space is intentionally formed between the load receiving member and the fuel tank before any load is applied. This pre-established clearance acts as a cushion that prevents direct contact between the load receiving member and the tank, even when load is applied to the seat, thereby protecting the tank from potential damage.
3Adaptability or versatility
If the seat is swingably supported via hinge, then the structure can receive load from rider, but no particular load receiving structure is disclosed in prior art
Solution Approach 1:
The load receiving member is designed with multiple functions: it receives the seat load, covers and protects the fuel tank, provides mounting points for the seat locking mechanism, and maintains the aesthetic appearance of the vehicle. This multi-functional design eliminates the need for separate dedicated structures for each function, reducing overall device complexity.
Data Source
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AI summary
The present invention relates to a straddle type vehicle, in particular motorcycle, comprising: a vehicle body frame (2); a housing box (10) disposed on the vehicle body frame (2); and a seat (9) capable of opening and closing a storage space (10a) of the housing box (10), wherein a rear end of the seat (9) in longitudinal direction of the straddle type vehicle is supported by the vehicle body frame (2) via a hinge member (50), such that the seat (9) is swingable in up-and-down direction, and a load receiving member (10b) configured to receive a load acting on the seat (9) is disposed in front of the storage space (10a) of the housing box (10) in longitudinal direction of the straddle type vehicle.