Liquid Crystal Module Bezel with Interlocking Tabs
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Solution Overview
Problem
Conventional liquid crystal modules with bent bezel tabs suffer from deformation due to inadequate strength, leading to increased weight and cost when thicker bezel pieces are used, and aesthetic issues with the assembled bezel shape.
Innovation Solution
A liquid crystal module design featuring bezel pieces with semi-elliptical recesses and tabs that are superposed and fixed with screws, reducing the protruding distance of tabs to enhance strength and aesthetic appeal, while using less material to lower costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bezel pieces are made thicker to increase strength, then the strength of the bezel is improved, but the weight and cost greatly increase
Solution Approach 1:
The bezel is divided into multiple bezel pieces (typically four) that are linked together to form a rectangular frame. Each bezel piece contains linking tabs at its ends that interlock with adjacent pieces, creating a segmented structure that achieves sufficient strength through the collective arrangement rather than requiring each piece to be individually thick and heavy.
2Strength
If the protruding distance of the linking tabs is reduced to increase strength, then the strength of the linking tabs is improved, but the amount is limited by the need for holes for screws or positioning bosses
Solution Approach 1:
The linking tabs are designed with a nested structure where tabs from adjacent bezel pieces interlock and fit within each other's space. The tabs protrude from the ends of bezel pieces and are positioned to overlap with tabs from neighboring pieces, creating a compact interlocking arrangement that maximizes strength within limited protruding distance while accommodating necessary mounting holes.
3Ease of manufacture
If the linking tabs are formed by bending at the ends of the bezel pieces, then the manufacturing process is simple, but the bezel can be deformed because the linking tabs are not strong enough
Solution Approach 1:
The linking tabs are pre-formed with adequate strength characteristics before assembly. The tabs are designed with appropriate thickness, length, and structural features that provide inherent strength to resist deformation during assembly and use. This preliminary design ensures that when the bezel pieces are linked together, the tabs maintain their shape and the overall bezel structure remains stable without requiring additional reinforcement.
4Ease of manufacture
If the bezel pieces are linked into a rectangular frame shape with bent linking tabs, then the assembly process is straightforward, but the assembled bezel does not have a very good appearance
Solution Approach 1:
The design distinguishes between different regions of the bezel: the visible front portions of the bezel pieces are designed with smooth, aesthetically pleasing surfaces, while the linking tabs at the ends are designed for functional interlocking. The linking tabs are positioned at the rear or side edges where they are less visible, allowing their structural function to be optimized without compromising the overall aesthetic appearance of the assembled rectangular frame.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A liquid crystal module includes a rear frame (1), a light source (3), an optical sheet (5,6), a liquid crystal panel (8) and a bezel (9). The bezel (9) includes first and second bezel pieces (91,92). The first bezel piece (91) has a first recess portion (91a) and a first tab portion (91b) that protrudes from a first bottom portion (91d) of the first recess portion (91a) toward the second bezel piece (92). The second bezel piece (92) has a second recess portion (92a) and a second tab portion (92b) that protrudes from a second bottom portion (92d) of the second recess portion (92a) toward the first bezel piece (91). The first bottom portion (91d) and the first tab portion (91b) of the first bezel piece (91) are superposed with the second tab portion (92b) and the second bottom portion (92d) of the second bezel piece (92), respectively.