Saddle-riding Vehicle Grab Bar Rearward Positioning
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Solution Overview
Problem
In saddle-riding vehicles, it is difficult to position the grab bar further rearward without compromising maintainability and increasing the size of the rear portion in the up-down direction, as existing designs require accessing bolts that become covered by the tail cover, making them hard to remove and maintain.
Innovation Solution
The grab bar is attached to a cross member with the tail cover overlapping the attachment area, allowing for rearward positioning without detaching the side covers or grab bar, and featuring detachable and attachable design elements that facilitate easy maintenance and reduced vertical size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the grab bar is positioned further towards the rear, then the seat can be extended rearward or the grab bar can be made longer for easier grasping, but the bolts become covered by the tail cover making maintenance difficult
Solution Approach 1:
The cover structure is divided into separate components: side covers and a tail cover. The tail cover can be detached independently from the side covers and grab bar, allowing access to bolts at the rear positioning without requiring complete disassembly. This segmentation enables the grab bar to be positioned further rearward while maintaining ease of repair.
2Length of moving object
If the grab bar is positioned further towards the rear, then rearward positioning is achieved, but the structure for fixing the grab bar increases the size of the rear portion in the up-down direction
Solution Approach 1:
The fixing structure utilizes the lateral dimension rather than increasing vertical height. The cross member extends laterally between the left and right seat rails, and the fixing portions are integrated into this lateral structure. This dimensional approach allows rearward positioning of the grab bar without increasing the up-down size of the rear portion.
3Length of moving object
If the grab bar is positioned further towards the rear, then rearward positioning is achieved, but the structure makes the movable range of the rear wheel narrow
Solution Approach 1:
The fixing structure is positioned in the lateral direction between the seat rails rather than extending vertically or horizontally over the rear wheel area. This lateral placement allows the grab bar to be positioned further rearward without encroaching on the rear wheel's up-down movable range, maintaining full wheel articulation freedom.
Data Source
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AI summary
In a saddle-riding vehicle, a tail cover (33) is positioned rearward of a seat (4) and between a left side cover (31) and a right side cover (32). A cross member (26) is positioned across a left supporting frame (24) and a right supporting frame (25). A grab bar (9) is attached to the cross member (26) in an attachable and detachable manner. The tail cover (33), in the plan view of the vehicle, is positioned so as to at least partially overlap a portion of attaching the cross member (26) and the grab bar (9). In a state in which the side covers (31,32) and the grab bar (9) are attached to the vehicle, it is possible to attach or detach the tail cover (33) to or from the vehicle.