Integrated Bumper Step Pad Isolator Assembly
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Solution Overview
Problem
Existing vehicle bumper designs for pick-up trucks, vans, and SUVs require multiple components and complex assembly processes, increasing manufacturing and maintenance costs while not being robust enough to handle user weight effectively.
Innovation Solution
An integrated step pad and isolator assembly with reinforcement ribs and a fascia cover, where the step surfaces are integrally formed on the isolator, reducing the need for a secondary step pad and simplifying assembly, using thermoplastic materials like TPO or Polypropylene for durability and ease of manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rubber or plastic step surface is mounted on the bumper using adhesive, bolting, or snap-fit engagement with a reinforcement structure, then the step surface provides a gripping area for users, but the bumper assembly requires at least three components (outer fascia, step surface, and reinforcement structure) increasing manufacturing and assembly complexity
Solution Approach 1:
The patent combines the step surface and reinforcement structure into a single integrated bumper component. The step surface is formed as an integral part of the bumper body, eliminating the need for separate reinforcement structures and reducing the number of components from three to one or two (bumper with integrated step surface, and optionally a fascia cover).
Solution Approach 2:
The bumper component serves multiple functions simultaneously: it provides structural support, acts as the outer fascia, and incorporates the step surface with grip features. This multi-functional design eliminates the need for separate dedicated reinforcement structures and step surfaces.
2Reliability
If multiple separate components are used for the bumper assembly (outer fascia, step surface, reinforcement structure), then each component can be optimized for its specific function, but the manufacturing and assembly steps increase and production costs rise
Solution Approach 1:
The invention merges the outer fascia and step surface into a single molded bumper component, reducing the number of manufacturing steps and assembly operations while maintaining the functional optimization of each region through integrated design.
3Strength
If a reinforcement structure is provided underneath the fascia to account for user weight, then the bumper can support user weight, but the overall bumper assembly becomes more complex and expensive to manufacture
Solution Approach 1:
The reinforcement structure is merged with the outer fascia to form an integrated bumper component, eliminating the need for separate reinforcement elements while maintaining weight support capability through the integrated structural design.
Solution Approach 2:
The bumper is made from polymeric materials that provide both structural strength and flexibility, allowing the integrated design to support user weight without requiring additional metal reinforcement structures.
4Ease of operation
If the step surface is made from rubber or plastic mounted by adhesive or bolting, then the step surface provides grip, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The step surface is merged with the bumper body as an integral molded feature, eliminating the need for separate attachment processes such as adhesive application, bolting, or snap-fit engagement, thereby significantly speeding up assembly.
Data Source
AI summary
An automobile bumper including an isolator including one or more step surfaces integrally formed on the isolator. The step surface(s) may provide a gripping surface for permitting a user to step on for loading and unloading objects from the automobile. A fascia cover may be attachable to the isolator and include a cutout for allowing the step surface(s) to protrude through the cutout to prevent direct contact of the user's foot with the fascia.