Reverse-Lock Handle Assembly for Ergonomic Stage Light Lifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stage light fixtures with heavy weights (30-60 kg) are difficult to lift due to conventional handles that require bending over large angles for storage and are aesthetically unpleasing when folded.
Innovation Solution
A reverse-lock hand holding assembly with a handle that can be locked against reverse rotation, allowing it to be unfolded for lifting and folded for storage without excessive bending, featuring a locking plate that slides between positions to secure the handle in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a foldable handle is provided on the pivoting arm for convenient lifting, then the installer can lift the stage light fixture more easily, but the handle requires bending over large angles and folds downward for storage which is aesthetically unpleasing and still difficult to lift
Solution Approach 1:
The patent inverts the conventional handle folding direction by designing the handle to fold upward toward the pivoting arm instead of downward. This reverse folding direction achieves both ergonomic benefits (reduced bending angle) and aesthetic benefits (upward folded position) while maintaining the lifting function
2Ease of operation
If the handle is designed to fold downward for storage, then the handle can be compacted, but the installer must bend over large angles to hold the handle making lifting relatively difficult
Solution Approach 1:
The patent reverses the conventional downward folding design by implementing upward folding of the handle toward the pivoting arm. This inversion places the folded handle in an upper position that is more accessible to the installer, reducing the bending angle required to hold and operate the handle
3Reliability
If the locking plate is provided to lock the handle against reverse rotation, then the handle can be secured in unfolded state for lifting, but the locking mechanism must withstand large forces from heavy objects
Solution Approach 1:
The patent combines the locking plate with the pivoting arm structure, making the locking plate an integrated component of the arm rather than a separate attachment. This merging allows the locking mechanism to utilize the structural strength of the pivoting arm itself, distributing and withstanding the large forces from heavy objects more effectively
Solution Approach 2:
The locking plate acts as an intermediary element between the handle and the pivoting arm, providing a mechanical interface that secures the handle in the unfolded position while transferring loads to the robust pivoting arm structure
Data Source
AI summary
A reverse-lock hand holding assembly includes a base support and a handle pivoted to the base support, which handle has a folded state and an unfolded state. A locking plate capable of sliding parallel to the base support is arranged on the base support for locking the handle against reverse rotation thereof, which locking plate has a first position and a second position, and the rotation shaft of the handle is provided with a locking block. The locking plate releases the handle and allows the handle to rotate between the folded state and the unfolded state when at the first position, and the locking block is abutted against the locking plate toward the base support to limit the handle to reversely rotate to the folded state from the unfolded state when the locking plate is at the second position.