Spring-Loaded Terminal Mechanical Drive Actuation
Solution Overview
Problem
Conventional spring-loaded terminals in switching devices are difficult to actuate, requiring a screwdriver to lever open, making it challenging to connect electrical conductors safely and efficiently, especially when handling multiple busbars with varying current loads and mechanical loads.
Innovation Solution
A connection device with a mechanical drive featuring a blade with wide and narrow sides, allowing easy actuation of spring-loaded terminals, eliminating the need for a screwdriver and ensuring safe and efficient conductor connection, with a design that includes a projection for external actuation and a spring leg for automatic clamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a screwdriver is used to lever open the spring-loaded terminal, then the terminal can be opened, but the operation becomes difficult and time-consuming while requiring additional tools
Solution Approach 1:
The mechanical drive is self-contained within the housing and can be actuated directly by the installer without requiring external tools like screwdrivers. The drive mechanism itself provides the means for actuation through its internal blade and projection design, making the system self-sufficient and eliminating dependency on additional tools.
Solution Approach 2:
The mechanical drive acts as an intermediary between the installer and the spring-loaded terminal. Instead of directly using a screwdriver on the terminal, the installer actuates the mechanical drive, which then uses its blade to lever the terminal open, providing a mediated and more efficient actuation process.
2Ease of operation
If the spring-loaded terminal is held open with a screwdriver, then the terminal remains open for conductor insertion, but the installer must simultaneously manage the screwdriver and conductor
Solution Approach 1:
The mechanical drive automatically maintains the terminal in the open position through its own structural design, eliminating the need for the installer to continuously hold it open with a tool. The drive self-manages the terminal state, allowing the installer to focus solely on conductor insertion without divided attention.
3Ease of operation
If a mechanical drive with blade is used to actuate the spring-loaded terminal, then the terminal can be easily opened, but the drive mechanism adds structural elements
Solution Approach 1:
The mechanical drive is integrated directly into the housing structure, merging the actuation mechanism with the existing structural elements. The blade is positioned to work with the terminal's spring mechanism, combining multiple functions into a unified structure that minimizes additional components while maximizing operational ease.
Solution Approach 2:
The complex operation of levers the terminal open is extracted from the manual screwdriver operation and transferred to the automated mechanical drive system. The drive mechanism takes out the difficult manual manipulation and replaces it with a simpler actuation process that requires minimal installer effort.
4Ease of operation
If the projection is formed on the circumference of the mechanical drive, then the drive can be easily rotated from outside, but the drive requires precise circumferential positioning
Solution Approach 1:
The projection is positioned at a specific location on the circumference of the mechanical drive where it provides optimal leverage and rotational control. This localized feature concentrates the actuation force at the most effective point, making the drive easy to rotate while maintaining precise positioning through its geometric design.
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
The solution simplifies the connection process, enhances safety by eliminating the risk of electrical shock during actuation, and reduces manufacturing and maintenance costs with a cost-effective and easy-to-manufacture design.
Implementation Method 1
the spring-loaded terminal has a support leg and a spring leg, which has an insertion opening for inserting the electrical conductor and is pressed towards the support leg by the wide side of the blade of the mechanical drive for clamping the inserted electrical conductor
Data Source
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AI summary
Connection device for connecting at least one electrical conductor with at least one spring-loaded clamp provided in a housing of the connection device, which has a mechanical drive, wherein the mechanical drive is installed in the housing and has a blade which has a wide side and a narrow side for actuating the spring-loaded clamp, wherein the blade with its wide side moves the spring-loaded clamp into an open position in which the electrical conductor can be inserted into an insertion opening of the spring-loaded clamp.