SPD Plug-in Module with Guided Locking and Anti-skid Features
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current plug-in surge protective devices (SPDs) face issues with inaccurate and unreliable physical design, difficult assembly, error-prone installation due to unreasonable structure, and high overall costs.
Innovation Solution
The design includes a rectangular outer shell with anti-skid structures, mis-installation-proof features, and locking mechanisms for the SPD plug-in module, paired with a base that provides guided plugging and locking structures, ensuring accurate and secure assembly, while controlling costs through simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plug-in SPD structure is used, then the device can protect against surges, but the assembly is difficult and error-prone
Solution Approach 1:
The SPD device is divided into modular components (plug-in module and base) that can be assembled separately and then connected through standardized interfaces, making assembly easier and more reliable
Solution Approach 2:
Guiding plugging structures and locking structures serve as intermediary mechanisms that facilitate accurate alignment and secure connection between the plug-in module and base, reducing assembly errors
2Reliability
If complex locking mechanisms are added to improve assembly reliability, then assembly becomes more secure, but device complexity increases
Solution Approach 1:
The locking structure is designed to automatically engage and lock the plug-in module into the base without requiring additional fastening operations or complex mechanisms, achieving secure assembly through self-locking action
Solution Approach 2:
Traditional complex mechanical fastening systems are replaced with a simplified locking structure that uses elastic deformation and geometric interlocking to achieve secure connection
3Manufacturing precision
If mis-installation-proof structures are added, then installation accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The guiding plugging structures incorporate asymmetric features such as directionally oriented guide rails and corresponding slots that allow the plug-in module to be installed only in the correct orientation, preventing mis-installation through geometric constraints
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to the technical field of surge protective devices, and specifically discloses an SPD plug-in module, an SPD base and a plug-in SPD. The SPD plug-in module includes a rectangular outer shell and an internal assembly. The rectangular outer shell is provided with a first plugging locking structure, a first guiding plugging structure, a window, an internal assembly clasping structure and a mis-installation-proof structure, etc., which are easy for plugging as well as for fixing the internal assembly. The internal assembly can be in a multi-chip tripping structure, such as an interruption turnable, which has a wide range of applications. The rectangular outer shell and an inner shell of the internal assembly are integrally formed, so that the product is simple and pretty, easy to assemble, and has a reliable structure, and costs are effectively controlled. The SPD base adopts upper and lower bottom shells formed integrally, which divide the internal space into multiple preset spaces, and wiring assemblies, alarm components, etc. are disposed in the respective spaces. The upper and lower bottom shells can be closed to complete assembly. The assembly process is convenient and the structure is firm. The plug-in SPD is composed of the SPD plug-in module and the SPD base, and can be widely used for AC/DC surge protection of low voltage systems below 2000V.