Resilient Bumper Retainer Structure for Shock-Release Positioning
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Solution Overview
Problem
Existing bumper attachment retainers that use fasteners to restrict the position of a bumper in both attachment and detachment directions may break when the bumper receives an external shock and moves in the attachment direction.
Innovation Solution
A bumper attachment retainer that includes a support portion to support the bumper from its back face, a first upper restricting portion to restrict the bumper's position in the attachment direction, and a second upper restricting portion to restrict the bumper's position in the detachment direction, all without using fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fastener is employed to restrict the position of the bumper in both attachment and detachment directions, then the bumper position is securely restricted, but the restricting portion may break when the bumper receives an external shock and moves in the attachment direction
Solution Approach 1:
The first upper restricting portion is designed as a resilient (flexible) structure that can dynamically deform under external shock loads. This dynamic capability allows the restricting portion to absorb impact forces through elastic deformation rather than rigid resistance, preventing breakage while maintaining position restriction functionality under normal conditions.
Solution Approach 2:
The restricting portion's mechanical properties are changed by using a resilient material or structure that can alter its stiffness characteristics. Under normal operation, it maintains sufficient rigidity to restrict position, but under external shock, it transitions to a more compliant state to absorb energy, thereby resolving the contradiction between strength and reliability.
2Reliability
If a fastener is used to attach the bumper, then the bumper position is restricted in both directions, but the device complexity increases and the restricting portion is prone to breaking
Solution Approach 1:
The invention extracts and eliminates the separate fastener component from the attachment mechanism. The bumper attachment retainer integrates the position restriction function directly into the retainer structure itself, using resilient restricting portions that inherently provide both attachment and position restriction without requiring additional fasteners, thereby simplifying the device while maintaining reliability.
Solution Approach 2:
The position restriction function and the attachment function are merged into a single integrated structure. The first and second upper restricting portions are combined with the bumper attachment retainer as one unit, eliminating the need for separate fasteners and reducing overall device complexity while maintaining the dual-directional position restriction capability.
3Stability of the object's composition
If the bumper position is restricted in the attachment direction, then the bumper remains securely attached, but the restricting portion breaks when the bumper moves in the attachment direction due to external shock
Solution Approach 1:
The first upper restricting portion is designed as a resilient structure that can dynamically deform under external shock loads. This dynamic capability allows the restricting portion to absorb impact forces through elastic deformation rather than rigid resistance, preventing breakage while maintaining position restriction functionality under normal conditions.
Solution Approach 2:
The resilient nature of the first upper restricting portion provides beforehand cushioning against external shocks. The structure is pre-designed to deform elastically under impact loads, absorbing energy before it can cause damage to the restricting portion, thereby maintaining both stability and strength.
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 retainer effectively restricts the bumper's position in both attachment and detachment directions without using fasteners, and absorbs external shock energy to prevent the restricting portions from breaking.
Implementation Method 1
a first upper restricting portion configured to make contact with the upper face section of the bumper, which is disposed at a reference position with the upper face section supported by the support portion, to restrict a position of the bumper in an attachment direction, and to release positional restriction of the bumper in a case in which a motive force in the attachment direction acting on the bumper disposed at the reference position is a predetermined force or greater
Data Source
AI summary
A bumper attachment retainer including: a support portion configured to support, from a back face of a bumper, an upper face section of the bumper at which an upper face of the bumper is formed; a first upper restricting portion configured to make contact with the upper face section of the bumper, which is disposed at a reference position with the upper face section supported by the support portion, to restrict a position of the bumper in an attachment direction, and to release positional restriction of the bumper in a case in which a motive force in the attachment direction acting on the bumper disposed at the reference position is a predetermined force or greater; and a second upper restricting portion configured to make contact with the upper face section of the bumper disposed at the reference position and to restrict a position of the bumper in a detachment direction.