Card Holder Cap Adjusting Flush Fit
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Solution Overview
Problem
The protrusion of a card holder from the surface of electronic devices due to positioning errors of the main board, patch errors of the card base, and manufacturing tolerance issues results in aesthetic and operational problems, with existing solutions being non-universal, complex, and costly to adjust.
Innovation Solution
A card holder design featuring a movably connected cap and body with force application pieces, such as elastic or magnetic components, that allow the cap to retract inward, adjusting its length and ensuring a flush fit with the device surface, utilizing a clamping groove, T-shaped frame, and limiting slots for precise alignment and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the card holder length is reduced to compensate for positioning errors and manufacturing tolerances, then the protrusion problem is solved, but the card holder cannot accommodate variations in error sizes and tolerance ranges
Solution Approach 1:
The card holder cap is designed to be movable relative to the card holder body through a clamping groove and elastic piece mechanism. This dynamic structure allows the cap to adjust its position automatically, enabling the card holder to accommodate positioning errors and manufacturing tolerances while maintaining a flush appearance. The movable design provides adaptability to different error sizes without requiring multiple fixed-length card holder variants.
2Shape
If the patch position is adjusted and card holder length is shortened to solve protrusion, then the appearance problem is improved, but the operation becomes complex and cost increases
Solution Approach 1:
The card holder incorporates an elastic piece (spring) that automatically applies force to the movable cap, enabling it to self-adjust and maintain contact with the card holder body. This self-service mechanism eliminates the need for complex manual adjustment operations or additional locking mechanisms. The system automatically compensates for positioning variations through the elastic force, simplifying both manufacturing and assembly processes while achieving the desired flush fit.
3Adaptability or versatility
If the card holder cap is made movable with force application pieces, then the protrusion problem is solved with good universality, but the device complexity increases
Solution Approach 1:
The card holder is segmented into two main parts: a fixed card holder body and a movable card holder cap. This segmentation allows the cap to independently adjust its position relative to the body through the clamping groove mechanism. By dividing the structure, the design achieves universality and adaptability without requiring complete redesign of the entire card holder assembly, thus limiting the increase in overall device complexity.
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 card holder effectively addresses protrusion issues by allowing adjustable length, improving aesthetics, and reducing operational complexity while maintaining a low cost, ensuring smooth card insertion and enhancing the appearance of electronic devices.
Implementation Method 1
the elastic piece is a spring
Implementation Method 2
the force application piece includes: a permanent magnet arranged on one of the card holder cap and the card holder body, and a soft magnet or permanent magnet arranged on the other one of the card holder cap and the card holder body
Data Source
AI summary
Disclosed are a card holder and an electronic device. The electronic device includes: a device body provided with a card holder slot and a card holder installed in the card holder slot, where a limiting rib is arranged in the card holder slot. The card holder includes: a card holder body, a card holder cap arranged on the card holder body and force application pieces for applying a force to the card holder cap towards the card holder body. The card holder cap is movably connected with the card holder body. The force application pieces enable the card holder cap to keep close to the card holder body. A limiting surface is arranged on the card holder cap and is abutted against the limiting rib so that an outer wall surface of a side wall of the card holder cap is flush with a surface of the device body.