Luggage Case Lid Damping Mechanism for Motorcycle
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Solution Overview
Problem
Luggage case lids for motorized two-wheelers often damage the locking mechanism due to sudden closure, and existing solutions like gas pressure springs are expensive and require user force to close, while also failing to prevent slamming.
Innovation Solution
A damping element is integrated near the hinge of the luggage case lid, which contacts a moving component to slow down the closing movement, preventing sudden closure and reducing kinetic energy through friction, allowing the lid to close comfortably without external force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If gas pressure springs are used to support the lid opening, then the lid can be automatically raised and slamming is prevented, but the user must exert force to close the lid and the cost increases
Solution Approach 1:
The harmful slamming effect is extracted and isolated by introducing a separate damping element that only activates during the closing phase, while the gas spring continues to provide opening support without needing to control closing
Solution Approach 2:
A damping element is introduced as an intermediary component between the lid and hinge assembly. This mediator absorbs the harmful kinetic energy during closing without interfering with the user's closing action or the gas spring's opening support function
2Ease of operation
If gas pressure springs are used to support the lid opening, then the lid can be automatically raised, but the cost increases
Solution Approach 1:
The damping function is merged with the existing hinge assembly by positioning the damping element in the hinge region, eliminating the need for separate expensive damping mechanisms and allowing cost-effective integration with standard hinge designs
Solution Approach 2:
The damping element is designed as a simple, inexpensive component that can be easily replaced if needed, using basic friction-based damping rather than complex expensive mechanisms
3Object-affected harmful factors
If the damping element is arranged away from the hinges in the area of a pedal mechanism, then the lid closing is dampened, but access to the luggage compartment is interfered with
Solution Approach 1:
The damping element is repositioned from the pedal mechanism area to the hinge region, changing its spatial location to a dimension that does not interfere with luggage compartment access while still achieving the damping function
4Object-affected harmful factors
If the braking torque of the damping element is increased to prevent slamming, then the lid cannot fall into the lock, but the lid cannot close without external force
Solution Approach 1:
The damping element provides partial damping action during the closing movement rather than full resistance throughout, allowing the lid to close naturally under gravity while preventing the harmful slamming at the end of the closing stroke
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 damping element effectively prevents the lid from slamming shut, ensuring the locking mechanism's safety and allowing for easy, cost-effective adjustment to suit different luggage cases, enabling gentle closure without user intervention.
Implementation Method 1
The kinetic energy of the closing cover is reduced by a braked displacement of the damping element. The damping element is preferably deformed only insignificantly. Rather, the kinetic energy is converted by friction generated during the displacement.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A luggage case, more particularly for a powered two-wheeled vehicle, has a lid (16) which is movably mounted relative to a body (12) of the luggage case (10) by means of at least one hinge (18). In the vicinity of the hinge (18) there is provided a damping element (22) which, when the lid (16) is closed, comes into contact with a component (32) that moves with the lid (16), thereby damping the closing movement.