Pluggable Insulated Terminal Block with Protective Pieces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional pluggable insulated terminal blocks often suffer from insufficient fit between terminals and covers, leading to terminals being pushed through accommodating holes, resulting in reduced production yield during circuit board assembly.
Innovation Solution
The improved pluggable insulated terminal block incorporates terminal-protecting pieces between first and second terminal holders, which transmit the pushing force exerted by the circuit board to the entire terminal block, preventing terminals from being pushed through the holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fit between terminal and cover is reduced to simplify assembly, then ease of operation is improved, but reliability deteriorates as terminals may be pushed through accommodating holes
Solution Approach 1:
The terminal block is divided into first and second covers with separate terminal holders, and terminals are segmented with protective pieces. This segmentation allows each component to perform its specific function: covers provide structural support, terminal holders provide positioning, and protective pieces prevent terminal displacement, thereby maintaining reliability while simplifying assembly.
Solution Approach 2:
Terminal-protecting pieces are introduced as intermediary elements between the terminals and the terminal holders. These protective pieces act as mediators that transmit pushing forces from the circuit board to the terminal block structure, preventing direct force transmission that would push terminals through the accommodating holes, thus maintaining terminal retention without requiring tight fits.
2Productivity
If terminal fit is loosened to improve assembly speed, then productivity is improved, but manufacturing precision deteriorates as terminals may shift position
Solution Approach 1:
Terminal-protecting pieces are pre-installed on the terminals before insertion into the terminal block. This preliminary action ensures that when terminals are inserted into the accommodating holes, the protective pieces are already in place to prevent any subsequent shifting or displacement, thereby maintaining manufacturing precision while allowing for faster assembly.
Solution Approach 2:
The terminal-protecting pieces serve as intermediary components that maintain terminal positioning within the accommodating holes. They provide a mechanical barrier that prevents terminals from shifting or being pushed through the holes, ensuring consistent terminal positioning without requiring precision-tight fits, thus enabling faster assembly while maintaining manufacturing precision.
3Device complexity
If terminal block structure is simplified to reduce complexity, then device complexity is reduced, but reliability worsens as terminals may be pushed through holes
Solution Approach 1:
The terminal block structure is segmented into distinct functional components: first and second covers for structural support, terminal holders for positioning, and terminal-protecting pieces for retention. This segmentation allows each component to be simple in design while collectively providing reliable terminal retention, thus reducing overall device complexity without sacrificing reliability.
Solution Approach 2:
Terminal-protecting pieces are introduced as simple intermediary components that solve the reliability problem without adding complex mechanisms. These protective pieces transmit forces and prevent terminal displacement through a simple mechanical action, maintaining terminal retention reliability while keeping the overall structure simple and easy to manufacture.
Data Source
AI summary
An improved pluggable insulated terminal block includes a terminal block and a plurality of terminal-protecting pieces. The terminal block comprises a first cover, a second cover and a plurality of terminals. An inner wall of the first cover is provided with a plurality of first terminal holders. An inner wall of the second cover is provided with a plurality of second terminal holders. Each terminal penetrates through one of the first terminal holders and one of the second terminal holders. The first cover is connected with the second cover. The terminal-protecting pieces are provided between the first terminal holders and the second terminal holders. The terminal-protecting pieces are arranged on the terminals. The two ends of each terminal extend beyond the terminal-protecting piece. Via this arrangement, the terminals will not be pushed inside the terminal block, when the terminals are inserted into a circuit board.