Motorcycle Seat Assembly for Extended Storage Access
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Solution Overview
Problem
Existing motorcycle designs with storage boxes positioned below the seats limit the capacity to accommodate long articles due to restricted front-rear direction space.
Innovation Solution
A motorcycle design featuring a main seat rotatable around the front end and a tandem seat rotatable around the rear end of a storage space, allowing both seats to open and close independently to create a single, extended opening that spans the entire length of the storage space, enhancing capacity for long articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the storage box is positioned below the main seat with limited front-rear space, then the seat structure is compact and simple, but the storage capacity for long articles is insufficient
Solution Approach 1:
The seat assembly is divided into two independent rotatable seats: a main seat that can rotate around a front rotation axis, and a tandem seat that can rotate around a rear rotation axis. This segmentation allows the storage space to be accessed from both front and rear, effectively doubling the accessible length of the storage box and enabling accommodation of long articles that would not fit in a single-access configuration
Solution Approach 2:
The patent introduces rotational movement around horizontal axes (front-rear rotation) in addition to the traditional vertical hinge rotation. This adds a new dimension of motion, allowing the seats to open the storage space from front and rear simultaneously, converting a one-dimensional access limitation into a three-dimensional access solution
2Adaptability or versatility
If both main seat and tandem seat are made rotatable around different axes, then the storage space becomes accessible from both ends for long articles, but the device complexity increases
Solution Approach 1:
The complex dual-access requirement is segmented into two independent single-access mechanisms: the main seat rotation mechanism for front access and the tandem seat rotation mechanism for rear access. Each mechanism is simpler and more reliable than a single complex mechanism would be, while together they provide the desired versatility
Solution Approach 2:
Both the main seat and tandem seat serve dual functions: they provide seating for riders and simultaneously serve as access mechanisms for the storage space. This multi-functionality reduces the need for separate access mechanisms, thereby reducing overall device complexity while maintaining high adaptability
3Length of stationary object
If the main seat and tandem seat are positioned close together, then the overall vehicle length is reduced, but the storage box capacity in the front-rear direction is limited
Solution Approach 1:
The patent changes the access dimension from vertical-only (traditional hinge) to include horizontal rotation around front and rear axes. This allows the storage box to be accessed from both ends simultaneously, effectively utilizing the front-rear dimension for storage capacity without increasing the overall vehicle length
Solution Approach 2:
The storage space is effectively segmented into front-accessible and rear-accessible zones by the two independent rotatable seats. This segmentation allows optimal utilization of the limited front-rear space, with each zone independently accessible, maximizing the usable volume within the constrained length
Data Source
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AI summary
A motorcycle comprises a storage space (33), a main seat (9a) and a tandem seat (9b), wherein the main seat (9a) is rotatable around a front rotation axis positioned at a front end of the storage space (33) and the tandem seat (9b) is rotatable around a rear rotation axis positioned at a rear end of the storage space (33). The main seat (9a) is adapted to open and close an opening of a front region (33b) of the storage space (33) and the tandem seat (9b) is adapted to open and close an opening of a rear region (33c) of the storage space (33).