Telecom Contact Spring Preventing Unintentional Release
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Solution Overview
Problem
Existing contact springs in telecommunications distribution devices face challenges in ensuring reliable connections, especially under high electrical current conditions, which can lead to unintentional disconnection and failure to protect against overvoltage damage.
Innovation Solution
A contact spring design featuring a contact clip that partially surrounds the contact lug, forming a receiving and contact area, with a clamping section connected via lateral sections, ensuring stable contact and preventing unintentional release, even under high overvoltage conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a contact lug is exposed to connect a device, then the device can be connected to the contact spring, but the contact may be unintentionally released under high electrical current conditions
Solution Approach 1:
The contact clip is formed adjacent to the contact lug and at least partially surrounds it, creating a nested structure where the contact clip encloses the contact lug. This nesting provides mechanical support and prevents unintentional release while maintaining electrical connection reliability under high current conditions.
Solution Approach 2:
The contact spring is segmented into distinct functional parts: the contact lug for electrical connection and the contact clip for mechanical support. This segmentation allows each part to perform its specific function optimally - the contact lug provides electrical contact while the contact clip provides structural stability and prevents release.
2Reliability
If a contact clip surrounds the contact lug to prevent release, then connection stability is improved, but the device complexity increases
Solution Approach 1:
The contact clip and contact spring are merged into a single integrated component rather than separate parts. The contact clip is formed adjacent to and as part of the contact spring structure, reducing the number of separate components while maintaining the stabilizing function. This merging simplifies the overall device complexity while improving connection stability.
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 design guarantees reliable contact between the contact spring and connected devices, such as overvoltage protection devices, across all operating states, including high electrical current scenarios, thereby effectively protecting the distribution device from overvoltage damage.
Implementation Method 1
an opposite, free and resiliently deformable end of the respective contact lug
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The contact spring (10) has connectors (13,14) that are provided at opposite ends (11,12) for connecting incoming and outgoing wires of subscriber cable, system cable or patch cable. The contact tabs (20,21) are provided in middle area (19) and positioned between two connectors, for contacting the overvoltage protection device and test device respectively. A contact work area (22) is formed in middle area to partially surround the contact tabs. A contact region (23) is formed to contact with respective contact tabs and contact work area.