Rotary Positioning Assembly for Tool-Free Board Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fixing devices for board-to-board connections and electronic device assemblies face issues such as loose screws, cumbersome manual assembly, misalignment, and ease of disassembly complications, leading to increased costs and operational difficulties due to the need for hand tools and susceptibility to external forces causing disconnection.
Innovation Solution
A rotary positioning device comprising a base, a fixing seat, a rotation unit, and an elastic member, where the rotation unit drives the positioning bodies to align and secure the plates through a combination of rotating and pressing mechanisms, utilizing an elastic member for automatic reset and unlocking, ensuring accurate alignment and secure fixation without manual tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple positioning screws are used to lock boards together, then the connection strength is improved, but the ease of operation deteriorates due to cumbersome manual assembly and disassembly requiring hand tools
Solution Approach 1:
The patent replaces the traditional screw-based mechanical fastening system with a rotary locking mechanism that uses rotational motion to engage and disengage positioning bodies. The rotary unit with its cam surface and movable positioning bodies eliminates the need for hand tools, transforming the assembly operation from threaded fastening to simple rotation, thereby improving ease of operation while maintaining connection strength.
Solution Approach 2:
The patent introduces dynamic elements including the rotary unit that can rotate between locked and unlocked positions, and movable positioning bodies that can shift between engaged and disengaged states. This dynamic mechanism allows quick transitions between assembly and disassembly states without requiring manual manipulation of multiple static screws, resolving the contradiction between connection strength and operational ease.
2Strength
If positioning screws are used for board connections, then the connection is secure, but the reliability deteriorates due to screws falling off or being lost during disassembly
Solution Approach 1:
The patent merges the positioning function and the locking function into a single integrated rotary mechanism. The movable positioning bodies are part of the rotary unit itself rather than separate screw components. This integration ensures that all positioning elements remain attached to the rotary unit throughout the disassembly process, eliminating the risk of individual screws being lost while maintaining secure connection when locked.
Solution Approach 2:
The rotary locking mechanism is designed to contain and retain all its positioning bodies within the rotary unit structure. The design inherently prevents component loss through its self-contained architecture, where positioning bodies are guided and restrained within the rotary unit's internal features, making the system self-sufficient and preventing the reliability issue of lost fasteners.
3Strength
If manual screw assembly is used for board connections, then the connection can be made, but the productivity deteriorates due to increased assembly time and manual labor
Solution Approach 1:
The patent replaces the manual screw assembly process with an automated-friendly rotary locking mechanism. The rotary unit's design with its cam surface and movable positioning bodies allows for quick engagement and disengagement through simple rotational motion, which can be easily automated. This substitution dramatically reduces assembly time and manual labor while maintaining secure connections, thereby improving productivity without sacrificing connection strength.
4Manufacturing precision
If fixing devices with positioning seats are used, then the positioning accuracy is improved, but the device complexity increases due to additional components like caps, screws, and positioning seats
Solution Approach 1:
The patent merges the positioning seat function directly into the base structure and integrates the positioning bodies with the rotary unit. This consolidation eliminates separate positioning seat components and reduces the overall number of parts. The positioning accuracy is maintained through the precise geometric relationship between the base's positioning groove and the rotary unit's positioning bodies, achieving high manufacturing precision with reduced device complexity.
Solution Approach 2:
The rotary unit serves multiple functions simultaneously: it provides the locking mechanism through rotation, houses the positioning bodies for accurate alignment, and integrates the cam surface for actuating the positioning bodies. This multi-functionality eliminates the need for separate positioning seats and other auxiliary components, reducing device complexity while maintaining positioning accuracy through the unified design.
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 device enables quick and secure assembly and disassembly of electronic components by providing guided alignment and automatic reset, reducing the risk of misalignment and loosening, thus simplifying operations and enhancing assembly efficiency while preventing component loss.
Implementation Method 1
the elastic recovery force of the elastic member can be used to drive the rotating member to quickly and automatically reset
Data Source
AI summary
A rotary positioning device includes a base, a fixing seat assembled on the shaft and stopper of the base and having and a movable positioning body respectively placed in each horizontal through-hole thereof, a rotation unit including a driving member and a rotating member and assembled outside the fixing seat, the driving member including a rotating shaft movably installed inside the protruding shaft portion of the fixing seat and a connecting portion located on one side of the rotating shaft, the rotating member including two inner shoulders that rotate and resist or retreat from the clamping portion of the fixing seat and two pushing portions for pressing the respective movable positioning bodies for lateral displacement in each through-hole, and an elastic member placed between the protruding shaft portion of the fixing seat and the rotating shaft of the driving member.