Snap-Fit Armrest Cup Holder Assembly Design
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Solution Overview
Problem
The complexity and increased labor required to assemble vehicle cup holders integrated into armrests lead to higher manufacturing costs, making them less economical.
Innovation Solution
A tool-free assembly design for a cup holder assembly supported on a vehicle armrest, utilizing a bezel with bracket latches and a cup holder base with base latches that snap into place, allowing for easy installation and removal without the need for tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cup holder is integrated into a vehicle armrest, then the cup holder is easily accessible to occupants, but the armrest structure becomes more complex and assembly labor increases
Solution Approach 1:
The cup holder assembly is divided into separate modular components: a cup holder base, a bezel with bracket latches, and an armrest frame. These segments can be manufactured independently and assembled through simple snap-fit connections, reducing overall structural complexity while maintaining accessibility.
Solution Approach 2:
The bezel is nested within the armrest frame, and the cup holder base is nested within the bezel. This nested arrangement allows multiple components to occupy overlapping spatial volumes, reducing the overall footprint and simplifying the external armrest structure while keeping the cup holder accessible.
2Ease of operation
If a cup holder is integrated into a vehicle armrest, then the cup holder is easily accessible to occupants, but the assembly labor and manufacturing cost increase
Solution Approach 1:
By segmenting the cup holder into separate modules (base, bezel, bracket latches), each component can be manufactured using standard processes and assembled through simple snap-fit connections rather than requiring complex tooling or skilled labor, thereby reducing assembly labor while maintaining accessibility.
Solution Approach 2:
The bracket latches are designed to automatically engage and secure the bezel to the armrest frame through simple snap-fit connections without requiring tools or specialized assembly procedures. This self-service assembly mechanism reduces manufacturing labor requirements while preserving easy occupant access to the cup holder.
3Reliability
If traditional cup holder integration methods are used, then the cup holder is securely mounted, but the assembly process requires tools and increases labor time
Solution Approach 1:
Traditional mechanical fastening systems (screws, bolts, rivets) are replaced with a snap-fit latch mechanism. The bracket latches engage with corresponding receptacles through elastic deformation and geometric interlocking, providing secure mounting without requiring tools or excessive assembly time, thus reducing time loss while maintaining reliability.
Solution Approach 2:
The mounting mechanism transitions from rigid permanent fasteners to flexible snap-fit connections that rely on elastic deformation parameters. The bracket latches are designed with specific material properties and geometric parameters that enable them to deform during assembly and then maintain a secure locked position, achieving reliable mounting through parameter optimization rather than complex mechanical systems.
Data Source
AI summary
An armrest assembly with a cup holder includes an armrest frame with a cup holder frame. The assembly also includes a bezel with a bezel cup holder opening. The bezel cup holder opening is adjacent the cup holder frame. The bezel is retained on the armrest frame by a plurality of bracket latches. The assembly also includes a cup holder base. The cup holder base includes a base opening which is adapted to accommodate a beverage container. A base projection substantially surrounds the base opening. At least a portion of the base projection is located in the cup holder frame. The cup holder base is retained on the bezel by a plurality of base latches.