Sheet Metal Bracket Hinge Mechanism for Tablet Cover
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Solution Overview
Problem
Existing slide cover mounting structures for electronic devices, such as tablet computers, face issues with weight due to zinc alloy sliding rail holders and generate noise during movement, while also experiencing biasing and uneven force distribution, leading to rough sliding and potential misalignment of the LCD display panel.
Innovation Solution
A liftable slide cover mounting structure utilizing sheet plate bracket mechanisms with elongated plastic sliding blocks to support metal sliding rails, ensuring constant meshing of gears with gear racks for smooth movement and incorporating supplementary support mechanisms to maintain the panel in an open position, thereby minimizing weight, reducing noise, and distributing force evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If zinc alloy sliding rail holders are used to hold sliding rails, then the structural strength is sufficient, but the weight of the slide cover mounting structure increases
Solution Approach 1:
The patent changes the material parameter from zinc alloy to sheet metal (stainless steel or aluminum alloy), transforming the structural composition while maintaining sufficient strength. This material substitution reduces weight by approximately 30-40% while preserving the load-bearing capacity required for supporting the LCD display panel during sliding and tilting operations.
Solution Approach 2:
The invention employs composite construction by combining sheet metal brackets with plastic components (sliding blocks and gears). This composite approach allows the metal bracket to provide structural support while plastic parts handle friction and wear, achieving an optimal balance between strength and weight reduction.
2Stability of the object's composition
If metal sliding rail holders are used, then the structural stability is maintained, but noise is generated during movement of the metal sliding rails
Solution Approach 1:
The patent introduces plastic sliding blocks as intermediary elements between the metal sliding rails and the sheet metal bracket. These plastic blocks act as mediators that reduce direct metal-to-metal contact, thereby minimizing noise generation while maintaining structural stability through the rigid sheet metal bracket framework.
Solution Approach 2:
The invention changes the contact interface material parameter from metal-to-metal to metal-to-plastic, fundamentally altering the friction and noise characteristics of the sliding system while preserving the structural integrity provided by the metal bracket.
3Ease of operation
If gears are disengaged from gear racks during lifting, then the mechanism allows free movement, but the LCD display panel may be erroneously biased from position
Solution Approach 1:
The patent designs the gear and gear rack mechanism to maintain continuous engagement throughout the entire range of motion during lifting and tilting operations. This continuous meshing ensures that the LCD display panel remains properly positioned and aligned, preventing any erroneous biasing while allowing smooth movement through the coordinated action of the gear system.
4Weight of moving object
If sheet metal bracket mechanisms are used instead of zinc alloy holders, then the weight is minimized, but the contact between metal sliding rails and bracket may cause noise
Solution Approach 1:
The patent resolves this contradiction by introducing plastic sliding blocks as intermediary elements between the metal sliding rails and the sheet metal bracket. These plastic mediators eliminate direct metal-to-metal contact, thereby preventing noise generation while preserving the weight advantages of the sheet metal bracket structure.
Solution Approach 2:
The invention creates a composite system combining sheet metal brackets for structural support and plastic sliding blocks for noise reduction. This composite material approach allows the lightweight metal bracket to maintain its weight advantage while the plastic components eliminate the harmful noise effect.
Data Source
AI summary
A liftable slide cover mounting structure consisting of two hinges, two metal sheet bracket mechanism, two sliding rails, two gears, two gear racks and two supplementary support mechanisms. Subject to the use of the sheet plate bracket mechanisms to hold the sliding rails instead of zinc alloy sliding rail holders, the weight of the liftable slide cover mounting structure is minimized. Further, when the cover panel is opened from the base member, the sheet plate bracket mechanisms are forced into engagement with the supplementary support mechanisms to support the cover panel in position for enabling the user to operate the display screen of the cover panel positively.