Bolt Terminal with Integral Nut and Wiring Metal Surface
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Solution Overview
Problem
Existing bolt terminals are bulky and inefficient for large wire diameters, requiring high design complexity for snapping connections and inadequate for high current conduction due to cold junction contact methods.
Innovation Solution
A compact bolt terminal design featuring a housing, integral nut, screw, and wiring metal surface with a trapezoidal profiled screw and beveled guide rail connection, incorporating a spring and L-shaped bent portions for easy mounting and dismounting, ensuring all-metal contact for improved conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing bolt terminals use cold junction contact method, then the terminal structure is simple, but the conduction capability is insufficient for large current
Solution Approach 1:
The patent changes the contact method from cold junction to hot junction by providing a wiring metal surface on the interface between the screw and housing, enabling direct metal-to-metal contact that supports large current flow while maintaining structural simplicity
Solution Approach 2:
The patent combines different materials (screw, housing, wiring metal surface) to create a composite contact structure that achieves both simple construction and high conduction capability for large current applications
2Reliability
If bolt terminals are connected to guide rail by snapping with pins and springs, then the connection is secure, but the entire terminal must be pulled to assemble or disassemble, reducing operational efficiency
Solution Approach 1:
The patent divides the connection system into two independent parts: the terminal body (housing with wiring) and the mounting component (guide rail mounting foot with spring), allowing the terminal to be connected or disconnected by moving only the mounting component while the terminal body remains stationary
Solution Approach 2:
The patent introduces a mounting component as an intermediary element between the terminal housing and guide rail, which includes a spring mechanism that enables secure connection while allowing easy assembly and disassembly by manipulating only the mounting component
3Quantity of substance
If existing bolt terminals are designed for large wire diameters, then the wiring capacity is sufficient, but the terminal volume becomes large, reducing compactness
Solution Approach 1:
The patent changes the contact interface design by providing a wiring metal surface on the screw-housing interface, which increases the conductive area and allows the terminal to handle large wire diameters and high current while maintaining a compact overall volume
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 design enables efficient connection and disconnection of large wire diameters with reduced human resource waste and enhanced conductivity by providing a larger conductive area and reliable screw integration, improving operational efficiency and reliability.
Implementation Method 1
a spring provided between the housing and the guide rail mounting foot
Data Source
AI summary
A bolt terminal mounted on a guide rail is provided. The bolt terminal comprises a housing (1), an integral nut (2), a screw (3), a connection component (4), and a wiring metal surface (5); one end of the screw is provided in the housing, the other end of the screw is located outside the housing, and the screw located outside the housing is to be connected to the integral nut fitted therewith; the wiring metal surface is provided on the interface between the screw and the housing; and the housing is to be connected to the guide rail via the connection component. The bolt terminal increases the requirement for powering the wirings, and the bolt terminal can be removed from the guide rail only by using a conventional screwdriver to lightly tap on a removal port. The screw is integrally connected to the housing by injection molding and thus there is no risk of the screw falling off, enabling higher reliability.