Surge Protector Plug-In Module With Ejector Spring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing overvoltage protection device combinations require complex manipulation for removing plug-in modules, especially when multiple modules are locked in a U-shaped base, and existing solutions often necessitate additional components for easier removal.
Innovation Solution
The use of fork-like plug contacts with wedge-like contact surfaces, where the wedge angle is greater than the self-locking angle, allows for high contact pressure during insertion and easy removal without additional components by utilizing the spring force of the plug contacts or elements to eject the module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If locking means are used to secure plug-in modules in the lower part, then reliability of connection is improved, but ease of operation deteriorates due to complex manipulation required for removal
Solution Approach 1:
The locking means transitions from a static locked state to a dynamic unlocked state through the ejector spring mechanism. When removal force is applied, the locking means can dynamically switch between engaged and disengaged states, enabling easy removal while maintaining secure connection during normal operation.
Solution Approach 2:
The ejector spring provides self-service by automatically pushing the plug-in module outward when the locking means is unlocked. The spring stores energy during insertion and releases it during removal, eliminating the need for complex manual manipulation or additional tools.
2Ease of operation
If additional components like ejector springs are added to facilitate removal, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The ejector spring serves multiple functions: it facilitates easy removal of plug-in modules, maintains contact pressure during connection, and works in conjunction with the locking means. By making one component multi-functional, the patent avoids adding separate mechanisms for each function, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent combines the ejector spring function with the existing locking means and contact structures. Rather than adding completely separate systems for removal facilitation, the spring is integrated into the existing connection mechanism, merging multiple functions into a cohesive system.
3Device complexity
If fork-like plug contacts with resilient legs are used as spring elements, then device complexity is reduced by eliminating additional components, but contact pressure requirements increase
Solution Approach 1:
The plug contact structure is modified by changing its geometric parameters - specifically designed with wedge-like contact surfaces and resilient legs that can store and release elastic energy. This parameter change enables the contact element to function as both an electrical connector and a spring element, eliminating the need for separate spring components while maintaining adequate contact pressure.
Solution Approach 2:
The patent merges the electrical contact function with the spring function into a single integrated component. The fork-like plug contact with resilient legs simultaneously provides electrical connectivity and mechanical elasticity, combining multiple functions that traditionally required separate components.
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
Facilitates easy removal of plug-in modules from the U-shaped lower part with high contact pressure maintained during insertion, eliminating the need for additional components and simplifying the removal process.
Implementation Method 1
spring element (4) which is prestressed when the plug-in module (2) is plugged in and, when the retaining means or latching means are loosened or unlatched, moves the plug-in module (2) in the opposite direction
Implementation Method 2
the part corresponding to the spring element, namely a plug element or a plug contact, tapers in a wedge-like manner in the plug-in direction has trained contact surfaces which, in the plugged-in position, rest against the legs under resilient prestressing of the legs
Data Source
AI summary
The combination has a U-shaped lower part, and a plug-in module (2) including an electrical surge protection element and connected with the lower part. A holding or locking unit (3) is provided between the module and the lower part and detachable and/or disengageable by manipulation. A spring element (4) is present between the module and the lower part and pretensioned when the module is inserted. The spring element adjusts the module against plug-in direction in a removal position when the holding or locking unit is detached or disengaged.