Retractable Limit Display Device for Space-Constrained Cases
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Solution Overview
Problem
Existing limit display devices face challenges in minimizing space occupation on the case panel while simultaneously enabling the display of both static and dynamic information.
Innovation Solution
A limit display device comprising a movable assembly, a limit assembly, and a display assembly, where the display assembly is fixed in the movable assembly, and the movable assembly is slidably matched with the limit assembly. The device uses a hidden drawing mode, allowing the display screen to be exposed or retracted based on user interaction, thereby optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a liquid crystal display with minimal width is used on the front panel, then the occupied effective space is reduced, but the display width reaches a bottleneck at 15 mm making further reduction very difficult
Solution Approach 1:
The patent transitions the display from a 2D flat panel to a 3D retractable structure that can extend and retract along the depth dimension. The display screen is mounted on a movable assembly that slides within a limit assembly, allowing it to protrude when needed and retract when not in use, effectively utilizing the Z-axis dimension to resolve the space occupation vs. readability contradiction.
Solution Approach 2:
The display assembly is made dynamic through the movable assembly mechanism. Instead of a fixed display, the screen can be extended outward for viewing and then retracted into the device body. This dynamic capability allows the display to occupy minimal space during normal operation while providing adequate display area when activated, solving the static space constraint problem.
2Area of stationary object
If static information is printed on a label using a sticking mode, then space is saved, but dynamic information of the product in real time cannot be displayed
Solution Approach 1:
The patent replaces the mechanical sticking label system with an electronic display system integrated into a retractable mechanism. Instead of using physical labels that can only show static information, the invention employs a display screen that can dynamically update content, replacing the mechanical label-adhesion system with an electronically controllable display system that provides both space efficiency and information versatility.
Solution Approach 2:
The display assembly serves multiple functions: it can display static product information like labels, show dynamic real-time data, provide operational status indicators, and even serve as an interactive interface. This multi-functional display replaces the single-function sticking label, providing universal information display capability while maintaining space efficiency through the retractable mechanism.
3Area of stationary object
If the display screen is set on the hangers on both sides of the installation equipment, then space is utilized, but processing difficulty increases and on-site installation becomes inconvenient
Solution Approach 1:
The patent merges the display assembly with the main device body through the movable assembly mechanism, rather than separating it onto external hangers. The display is integrated into the device structure with a compact retractable mechanism, combining the display function with the housing design. This integration simplifies manufacturing compared to assembling separate hanger components and reduces on-site installation complexity while still utilizing available space efficiently.
Data Source
AI summary
Disclosed is a limit display device comprising a movable assembly, limit assembly and display assembly. The display assembly is fixed in the movable assembly. The movable assembly is slidably matched with the limit assembly and comprises a limit slot. The limit assembly comprises a limit rod, one end of which is embedded into the limit slot, and the other end of which is fixed to the limit assembly; when the movable assembly drives the display assembly to slide, the limit rod synchronously slides along a preset path of the limit slot, keeping a locked or unlocked state of the display device. The limit display device is set on a side close to an inwall of a case and uses a hidden drawing mode, whereby a display screen of the display device may be completely exposed or hidden, avoiding touching the display screen mistakenly, and reducing the occupation of the space of the case in depth direction.