Double hook attachment system
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Solution Overview
Problem
Existing vehicle seating systems lack a secure and efficient mechanism to attach tablet devices, allowing for hands-free viewing during travel, without requiring additional fasteners or complex design features.
Innovation Solution
A double hook attachment mechanism between a housing and a bezel, where the bezel's projection and housing's lip create a secure fit, preventing axial and lateral movement, and can be injection molded for simplicity and high retention force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting mechanisms are used for tablet devices, then the device can be secured, but additional fasteners and complex design features are required
Solution Approach 1:
The housing and bezel are merged into a single integrated attachment mechanism where the housing forms a projection with a cavity, and the bezel includes a corresponding recess. This integration eliminates the need for separate fasteners while providing secure mounting through the interlocking geometry of the projection-recess interface.
Solution Approach 2:
The attachment mechanism is segmented into distinct functional regions: the projection extending from the housing, the cavity in the bezel, and the lip structure. This segmentation allows each component to perform its specific function while maintaining overall simplicity and eliminating complex fastening systems.
2Reliability
If multiple fasteners are used to secure the bezel to the housing, then the attachment is more secure, but the manufacturing process becomes more complex
Solution Approach 1:
Multiple fastening functions are merged into a single integrated projection-recess structure. The housing projection and bezel recess work together as one unified attachment system, eliminating the need for multiple separate fasteners and simplifying the manufacturing process while maintaining secure attachment.
Solution Approach 2:
The attachment mechanism is designed to be self-securing through the interlocking geometry of the projection and recess. The lip structure automatically engages with the recess features, providing secure attachment without requiring additional fasteners or complex assembly procedures.
3Ease of manufacture
If a simple attachment mechanism is used, then manufacturing is simplified, but retention force may be insufficient
Solution Approach 1:
The simple projection-recess structure incorporates local quality enhancements through the lip structure and cavity geometry. These localized features concentrate stress and provide mechanical interlocking, significantly increasing retention force while maintaining overall manufacturing simplicity and avoiding complex mechanisms.
4Reliability
If additional fasteners are required, then secure mounting is achieved, but the device design becomes more complex
Solution Approach 1:
The mounting function is merged into the basic housing and bezel structures themselves. The projection extending from the housing and the corresponding recess in the bezel create an integrated attachment system that provides secure mounting without adding separate fasteners or increasing overall design complexity.
Data Source
AI summary
A tablet device holder assembly may include a housing defining a housing opening and including a housing lip arranged on a first side of the housing above the housing opening, and a removable bezel having a projection configured to extend through the housing opening and defining a projection opening that when the bezel is rotated to an installed state, the lip is received within the projection opening to maintain the bezel on the housing.