Knuckle Guard Detachment Mechanism for Motorcycle Impact Protection
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Solution Overview
Problem
Existing knuckle guards fail to effectively protect the rider's knuckle region from loads exceeding a predetermined value, as the break pin breaks and bends, leading to inadequate protection against impacts from behind the vehicle.
Innovation Solution
A knuckle guard design featuring a detachment structure with an elastic protruding part that deforms and moves from a holding hole to a detaching hole when a load exceeding the set value is applied from behind, allowing the guard to detach forward and reducing the risk of part damage, while maintaining attachment against front and lateral loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a break pin is used to attach the knuckle guard, then the guard can be easily detached, but the attachment portion opens when a load greater than or equal to a predetermined load is applied, providing inadequate protection
Solution Approach 1:
The attachment structure transitions from a static break pin to a dynamic elastic protruding part that can deform and move between holding and detaching positions based on applied load, enabling the system to adapt its attachment strength according to operational conditions
Solution Approach 2:
The attachment characteristics are changed by varying the positional relationship between the holding hole and detaching hole, and by utilizing the elastic deformation capability of the protruding part, allowing the system to switch between strong attachment and controlled detachment states
2Strength
If the guard member is securely attached to withstand front and lateral impacts, then protection is maintained, but the rider's body is restricted when excessive rearward load is applied
Solution Approach 1:
The attachment function is segmented into two distinct roles: the holding hole provides secure attachment for normal operation, while the detaching hole provides a release path for excessive loads, allowing the system to simultaneously achieve strength and controlled failure
Solution Approach 2:
The elastic protruding part acts as an intermediary element between the guard member and connecting member, mediating the force transmission and enabling the system to withstand normal loads while allowing controlled detachment under excessive loads
3Strength
If the detachment structure is positioned in the inner portion of the guard member, then the guard withstands front and lateral impacts, but the detachment mechanism must be precisely positioned to ensure proper function
Solution Approach 1:
The holding hole and detaching hole are positioned asymmetrically within the inner portion of the guard member, with the detaching hole positioned forward of the holding hole, creating a directional detachment path that simplifies the attachment mechanism while maintaining precision
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
The design enhances protection for the rider's knuckle region by ensuring the guard detaches only under excessive rearward load, preventing restriction of the rider's body and minimizing part damage, while maintaining stability against front and lateral impacts.
Implementation Method 1
an elastic protruding part which protrudes rearward from the guard member and is elastically deformable
Data Source
AI summary
A knuckle guard of the embodiment includes a guard member disposed in front of a grip of a handle of a vehicle, a connecting member connected to the guard member, and a detachment structure provided in an attachment part between the guard member and the connecting member and configured to detach the guard member forward from the connecting member when a load exceeding a set value is applied to the guard member from behind, in which the detachment structure is provided in an inner portion in a vehicle width direction of the guard member.