Collapsible Cart Bumper Structure for Impact Absorption
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Solution Overview
Problem
Conventional bumpers for carts are ineffective in absorbing mechanical forces, leading to potential damage to walls or structures during impacts, and may themselves cause damage upon repeated contact.
Innovation Solution
The design of a cart bumper featuring an outer contact wall, an inner rim, and a plurality of spokes that collapse in response to mechanical forces above a predetermined threshold, providing better cushioning and durability compared to solid bumpers by deflecting or crumpling to absorb impacts without causing further contact with adjacent surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If solid bumpers are used to protect carts from impact, then the cart structure is protected, but the bumpers cause damage to walls or structures during repeated contact and are ineffective at absorbing mechanical forces
Solution Approach 1:
The bumper structure transitions from a solid rigid form to a collapsible configuration with spokes and contact walls that can deform. This parameter change allows the bumper to absorb impact forces through controlled collapse rather than rigid resistance, reducing damage to external structures while maintaining protective function.
Solution Approach 2:
The bumper is designed with movable collapsible components including spokes and contact walls that can dynamically respond to impact forces. When force is applied, the structure transitions from a static rigid state to a dynamic collapsing state, allowing energy absorption through motion rather than static resistance.
2Reliability
If traditional solid bumpers are used, then the cart receives basic protection, but the bumpers provide limited cushioning and may cause damage upon repeated contact
Solution Approach 1:
The bumper design converts the harmful rigid impact force into beneficial energy absorption through controlled collapse. The collapsible structure transforms the damaging mechanical force into deformation work, protecting both the cart and adjacent surfaces from damage while maintaining reliable protective function.
3Strength
If rigid bumpers are used to prevent cart damage, then structural protection is provided, but the bumpers transmit full impact force to walls or structures
Solution Approach 1:
The bumper is segmented into multiple components including spokes and contact walls that can independently collapse. This segmentation allows the impact force to be distributed and absorbed across multiple collapsing elements rather than transmitted as a single rigid force, reducing the force transmitted to external structures.
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 cart bumper effectively absorbs mechanical forces, reducing the risk of damage to both the cart and adjacent structures by collapsing inwardly, thus offering improved cushioning and durability while requiring fewer components and simpler manufacturing compared to traditional bumpers.
Implementation Method 1
the outer contact wall and the plurality of spokes are configured to collapse in response to a mechanical force applied on the outer contact wall above a predetermined threshold force
Data Source
AI summary
Cart bumpers and carts including cart bumpers are described. In aspects, a cart bumper includes an outer contact wall, an inner rim, and a plurality of spokes extending from the inner rim to the outer contact wall, each spoke of the plurality of spokes defining a respective path. The outer contact wall and the plurality of spokes are configured to collapse in response to a mechanical force applied on the outer contact wall above a predetermined threshold force.