Sliding Positioning Fixture for Screw Hole Misinstallation Blocking
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Solution Overview
Problem
Existing positioning fixtures fail to accurately prevent incorrect installation of functional modules on circuit boards of different models, leading to potential damage due to structural interference and deformation.
Innovation Solution
A positioning fixture comprising a shielding member and a driving member, which includes a sliding part, a guiding part, and a shielding part, that slides to block the screw hole on the circuit board when an incorrect installation is detected, preventing the screw from being locked, thereby enhancing installation accuracy and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick pad is disposed on the bottom surface of the functional module to prevent incorrect installation, then the distance between screw holes increases to prevent locking, but the thick pad may be squeezed and deformed, allowing incorrect installation to still occur and cause damage
Solution Approach 1:
The patent introduces a positioning fixture as an intermediary mechanism between the functional module and circuit board. This fixture includes a positioning member that physically blocks the screw hole when incorrect installation is detected, serving as a mediator that prevents both incorrect installation and the associated deformation/damage problems simultaneously
Solution Approach 2:
The positioning fixture is designed to be installed beforehand on the functional module. Before the screw installation process begins, the positioning member is already in place to detect and block incorrect installation attempts, preventing the harmful deformation and damage from occurring in the first place
2Manufacturing precision
If the positioning fixture blocks the screw hole to prevent incorrect installation, then installation accuracy improves, but the device complexity increases due to additional components
Solution Approach 1:
The positioning fixture is segmented into distinct functional components: a positioning member for blocking the screw hole, a driving member for actuation, and a spring member for providing restoring force. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure manageable and not excessively complex
Solution Approach 2:
The positioning fixture is designed to be universally applicable to different functional modules and circuit board configurations. The positioning member can be configured to match different screw hole positions, and the overall mechanism provides a general solution for preventing incorrect installation across various models, reducing the need for model-specific complex designs
Data Source
AI summary
A positioning fixture including a shielding member and a driving member is provided. The shielding member includes a sliding part slidably connected to a functional module, a guiding part, and a shielding part. The sliding part and the shielding part respectively extend from two opposite ends of the guiding part. The driving member is movably disposed on the functional module corresponding to the shielding member. The driving member includes a base part, a driving part that contacts the guiding part, and a pillar part, which protrudes from the base part and is adapted to pass through the guiding groove. When the functional module is positioned on the circuit board, the base part of the driving member is pushed by the electronic component, and the guiding part is pushed by the driving part, so that the shielding member slides and the shielding part shields a screw hole of the circuit board.