Lock for Frame with Segmented Interactive Members
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Solution Overview
Problem
Existing tensioned projection screens face challenges in maintaining a stable, flat viewing surface during use while allowing for easy storage and transportation, as current locking mechanisms do not effectively prevent frame movement during setup and use without complicating the folding process.
Innovation Solution
A frame system with hinges and locks that include interactive members with a key-receiving mechanism, allowing for secure locking and easy unlocking to maintain frame stability during use and facilitate folding for storage, using a combination of pivoting and sliding interactions to manage frame movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a locking mechanism is added to prevent frame movement during use, then frame stability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is divided into two separate interactive members (first and second members) that can be independently positioned and engaged. Each member has distinct functional features (protrusions, recesses, keys, key-receiving portions) that work together to provide stable locking while maintaining modularity and reducing overall complexity.
Solution Approach 2:
The locking mechanism allows the frame members to transition between locked and unlocked states dynamically. The interactive members can be moved between different positions (engaged and disengaged states) to provide stability when needed and allow movement when required, making the system adaptable to different operational requirements.
2Stability of the object's composition
If a locking mechanism is added to prevent frame movement during use, then frame stability is improved, but ease of operation deteriorates
Solution Approach 1:
The locking mechanism is designed to be self-locking through the interaction of its members. When the frame members are positioned in the closed state, the interactive members automatically engage through their complementary features (protrusions fitting into recesses, keys inserting into key-receiving portions), eliminating the need for separate locking actions and simplifying operation.
Solution Approach 2:
The mechanism allows easy transition between locked and unlocked states by simply moving the interactive members between their engaged and disengaged positions. This dynamic design enables users to quickly fold or unfold the frame without complex manipulation, maintaining ease of operation while providing stable locking when needed.
3Shape
If the lock is positioned within the transverse profile, then aesthetic appearance is improved, but ease of manufacture deteriorates
Solution Approach 1:
The lock is segmented into two interactive members that can be manufactured separately and then assembled. This segmentation allows each member to be produced using standard manufacturing processes and then positioned within the transverse profile during final assembly, reducing overall manufacturing complexity while achieving the desired aesthetic appearance.
Solution Approach 2:
The interactive members are designed to nest within the transverse profile of the frame members when engaged. The first and second members fit into the internal space defined by the frame's transverse cross-section, creating a compact integrated appearance while allowing for straightforward manufacturing and assembly of the individual components.
Data Source
AI summary
A display apparatus is disclosed that includes a screen and a frame system positioned to support the screen. The frame system includes a plurality of frame members, a hinge that couples the frame members together, and a lock that blocks relative movement of the frame members.