Side Case Attachment Structure for Motorcycle Detachment
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Solution Overview
Problem
The existing side case attachment structures for saddle-type vehicles face difficulties in detaching the side case from the vehicle body, especially when a rear mounting component protrudes laterally and is positioned above the side case, limiting the upward movement required for detachment and potentially compromising traveling stability or increasing manufacturing costs.
Innovation Solution
A side case attachment structure featuring first and second attachment portions that are bent or inclined to face downward, with a holding portion including hooking portions and a movement restricting portion, allowing the side case to be detached by rotating rearward due to gravity, minimizing the necessary upward movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the side case is detached by lifting the entire side case upward, then the tip end of the hook can be pulled out from the hole of the case holder, but the upward movement is limited when a rear mounting component protrudes laterally and is positioned above the side case
Solution Approach 1:
Instead of lifting the side case upward to detach the hook from the hole, the patent inverts the detachment mechanism by having the hook engage from below and detach through downward or forward movement. The attachment portion is configured to engage the holding portion by upward movement, but detachment is achieved by pulling the grip portion forward and upward, causing the attachment portion to disengage from below, thus avoiding the need for large upward movement that would be blocked by protruding rear mounting components.
Solution Approach 2:
The patent transitions from a purely vertical detachment motion to a combined forward and upward motion. By adding the forward movement dimension, the detachment path bypasses the obstruction caused by rear mounting components that protrude laterally above the side case, allowing the hook to disengage without requiring the entire side case to move upward significantly.
2Adaptability or versatility
If the side case is designed to attach via hook and hole mechanism, then the side case can be detachably attached to the vehicle body, but the detachment becomes difficult when rear mounting components are positioned above the side case
Solution Approach 1:
The patent inverts the traditional hook-and-hole engagement direction. Instead of the hook engaging from above and requiring upward lifting for detachment, the attachment portion engages the holding portion from below. This inversion allows detachment to occur through forward and upward pulling motion of the grip portion, which does not conflict with rear mounting components positioned above the side case, thereby maintaining adaptable attachment while ensuring easy detachment.
3Ease of operation
If the entire side case is lifted for detachment, then the tip end of the hook can be pulled out from the hole, but this requires significant upward movement that may compromise traveling stability or increase manufacturing costs
Solution Approach 1:
By inverting the engagement direction so that the attachment portion engages from below, the patent eliminates the need for complex mechanisms that would be required to enable detachment with minimal upward movement. The simple inverted hook-and-hole geometry naturally allows detachment through forward and upward pulling, reducing manufacturing complexity while maintaining ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy detachment of the side case from the vehicle body even with a protruding rear mounting component, maintaining stability and reducing manufacturing complexities.
Implementation Method 1
a movement restricting portion protruding above the first hooking portion, the movement restricting portion being configured to restrict forward movement of the side case by coming into contact with the first attachment portion when the grip portion is gripped and the side case held by the vehicle body is pulled forward and upward with respect to the vehicle body so as to detach the first attachment portion from the first hooking portion
Data Source
AI summary
A side case attachment structure detachably attaching a side case to a vehicle body of a saddle-type vehicle includes a first attachment portion protruding of the side case, a second attachment portion of the side case, and a holding portion of a side portion of a rear portion of the vehicle body, the holding portion including a first hooking portion hooking the first attachment portion from above and a second hooking portion hooking the second attachment portion from above. A movement restricting portion of the holding portion restricts forward movement of the side case by coming into contact with the first attachment portion when a grip portion of the side case is gripped and the side case is pulled forward and upward with respect to the vehicle body so as to detach the first attachment portion from the first hooking portion.