Screwless Fixing Assembly for Electronic Peripherals
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Solution Overview
Problem
Existing screw-based fixing assemblies for electronic peripherals in computer cases are inconvenient and prone to loss, requiring time-consuming tightening and loosening, and can be damaged by spring forces, leading to instability during vibration.
Innovation Solution
A screwless fixing assembly using a fixed member, movable member, pin, elastic member, and positioning device, where the elastic member moves the movable member and pin to engage or disengage from the electronic peripheral with a single-step operation, preventing damage to the frame and ensuring secure fixation without screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring is used to push the fixing member towards the computer case, then the fixing member can be automatically pushed into position, but the force exerted by the spring may damage the fixing member or post when the pin rests on the surface
Solution Approach 1:
The elastic member transitions from a continuous pushing force to a controlled engagement mechanism. The pin is designed to be movable relative to the movable member, allowing it to dynamically adjust its position. When the movable member approaches the frame, the pin moves to pass through the through hole; when the movable member moves away, the pin rests on the surface without continuous spring pressure, preventing damage while maintaining automatic positioning capability
Solution Approach 2:
The fixing assembly is divided into independent functional components: the movable member that approaches/retreats from the frame, the pin that passes through the through hole, and the elastic member that provides controlled force. This segmentation allows each component to perform its specific function without the harmful effects of continuous spring pressure on the pin when not engaged
2Reliability
If the spring force is increased to prevent the pin from falling out during vibration, then the fixing reliability improves, but the pin and fixing member are more prone to damage
Solution Approach 1:
The pin serves itself by being selectively engaged with the through hole. When the movable member approaches the frame, the pin automatically moves to pass through the through hole and secure the electronic peripheral; when the movable member moves away, the pin automatically rests on the surface. This self-service mechanism eliminates the need for continuous spring pressure to prevent pin loss during vibration, as the pin's position is naturally controlled by the movable member's motion
Solution Approach 2:
The system uses dynamic engagement rather than static continuous pressure. The pin's engagement state changes based on the movable member's position: engaged when approaching (providing vibration resistance), disengaged when retreated (preventing damage). This dynamic behavior achieves both reliability during vibration and protection against damage
3Reliability
If screws are used to fix the electronic peripheral, then the fixing is secure and reliable, but the tightening and loosening process is time-consuming
Solution Approach 1:
The fixing and releasing operations are simplified to periodic single-step actions. The movable member is designed to approach the frame in one motion to simultaneously engage the pin with the through hole and fix the electronic peripheral, and to retreat in one motion to simultaneously disengage the pin and release the peripheral. This periodic single-step action eliminates the multiple sequential steps required for screw tightening and loosening, significantly reducing operation time while maintaining secure fixing
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 screwless assembly simplifies the fixing and releasing process, saving time and preventing pin loss, while ensuring secure engagement and stability against vibration.
Implementation Method 1
an elastic member (140) disposed between the frame and the movable member for pushing the movable member away from the frame
Data Source
AI summary
A screwless fixing assembly disposed on a frame is provided, which includes a fixed member, a movable member, an elastic member, and a positioning device. The fixed member is fixed on the frame and has an opening form thereon. The movable member is movably disposed to the fixed member and has a pin to pass through a through hole of the frame. The elastic member is provided for pushing the movable member to move away from the frame. The positioning device is disposed on the movable member and protrudes on the fixed member through the opening, for being selectively engaged with the fixed member at a first position and a second position, so as to move the pin to leave or inserted into the through hole. An electronic device is fixed on the other side of the frame by the pin passing through the through hole.