Coaxial Plug Connection With Spring Contacts for Rotational Reliability
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Solution Overview
Problem
Conventional coaxial plug connections for electrical and electronic components lack a secure and reliable method for permanent and repeated connection, especially in applications like prosthetic components where rotational stability and secure energy transmission are crucial.
Innovation Solution
A coaxial plug connection featuring a resilient contact element with multiple contact locations and a contoured design that allows for extensive contact over the partial circumference, enabling secure signal and power transmission, and is configured to allow rotation while maintaining contact, with a secure and potentially releasable or permanent connection mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional plug connection is used, then the connection can be established, but the connection lacks reliability and security for permanent and repeated connection
Solution Approach 1:
The contact element is designed as a resilient element that can dynamically adapt to the contact face during engagement and disengagement cycles. The resilient nature allows the contact element to maintain constant contact pressure while accommodating manufacturing tolerances and wear, ensuring reliable electrical connection through repeated operations without requiring complex adjustment mechanisms
Solution Approach 2:
The contact element's resilience parameter is optimized to provide sufficient contact pressure for reliable electrical connection while maintaining the ability to be repeatedly engaged and disengaged. The resilient design transforms the contact element from a rigid component to one with elastic deformation capability, changing the mechanical parameters to achieve both reliability and simplicity
2Reliability
If a single contact location is used, then the contact structure is simple, but the signal transmission quality is insufficient
Solution Approach 1:
The contact element is segmented to provide multiple contact locations along its length, allowing simultaneous contact with the contact face at several points. This segmentation distributes the electrical current across multiple contact points, improving signal transmission quality and reducing contact resistance without requiring a completely complex multi-component structure
Solution Approach 2:
The contact element extends in the axial direction to provide multiple contact locations, transforming a single-point contact into a distributed line contact. This dimensional extension along the axial axis of the plug connection allows extensive contacting while maintaining the simplicity of a single resilient element design
3Reliability
If the contact element is rigid, then the manufacturing is simple, but the contacting security is insufficient
Solution Approach 1:
The contact element's mechanical parameters are changed from rigid to resilient, introducing elastic deformation capability. This parameter change allows the contact element to maintain constant contact pressure through elastic recovery, improving contacting security. The resilient design can be manufactured using standard spring-making techniques or by forming metallic contacts with elastic properties, which are well-established manufacturing processes
4Adaptability or versatility
If the contact face is flat, then the manufacturing is simple, but the rotation capability is limited
Solution Approach 1:
The contact face is designed with a curved or rounded configuration instead of a flat surface. This curvature allows the plug body to rotate relative to the plug receptacle while maintaining contact between the resilient contact element and the contact face. The curved surface accommodates rotational movement through geometric compatibility, enabling multi-position switching without requiring complex mechanical coupling mechanisms
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
This solution provides a reliable and efficient means for secure energy and signal transmission in prosthetic components, allowing for rotational stability and minimizing the risk of corrosion and external influences, while facilitating easy assembly and potential modifications.
Implementation Method 1
the contact element to be in the form of a resilient element and to have a plurality of contact locations with the contact face... the contact element is pretensioned in a resilient manner in the direction toward the contact face in the joined state
Data Source
AI summary
The invention relates to a coaxial plug connection for electrical connection of electrical or electronic components having an axial plug, which has a plug body with at least one contact surface located on the outer side of the plug body and an axial socket with a plug receptacle formed to correspond with the plug body, in which the plug body is inserted in the joined state and in which at least one contact element is arranged to engage with the contact surface, wherein the contact element is formed as a spring element and has a plurality of contact points or contact areas to the contact surface.