Terminal Inserting Device Pneumatic Force Adjustment
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Solution Overview
Problem
Existing terminal inserting devices lack the ability to adjust the pulling force of terminal fittings after insertion, which varies depending on the article numbers of the terminal fittings, making it difficult to ensure a consistent and desired force for confirming attachment.
Innovation Solution
A terminal inserting device equipped with a changing means, such as a retractable member and a control system, that adjusts the pulling force by using pressurized fluid, specifically air, to finely control the biasing force and ensure the electric wire is pulled with a desired force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal inserting device is used to insert terminal fittings into connector housing, then the assembly process is automated and productivity is improved, but the device lacks the ability to adjust pulling force according to different terminal fitting types, reducing adaptability
Solution Approach 1:
The patent implements a retractable member that can dynamically adjust its extension length to change the biasing force applied to the electric wire holding means. This dynamic adjustment mechanism allows the pulling force to be adapted according to different terminal fitting types while maintaining automated assembly operations
Solution Approach 2:
The patent changes the physical parameter of the retractable member (extension length) to modify the biasing force. By controlling how far the retractable member extends, the system can precisely adjust the pulling force applied to terminal fittings of different types, resolving the contradiction between automated assembly and force adaptability
2Ease of manufacture
If a fixed pulling force is used for all terminal fittings, then the device structure is simple and ease of manufacture is improved, but the manufacturing precision of attachment confirmation deteriorates because different terminal fittings require different pulling forces
Solution Approach 1:
The patent uses a retractable member that appears to utilize pneumatic or elastic mechanisms to generate controllable biasing force. This approach provides precise force adjustment capability while maintaining relatively simple device structure, as the retractable member can be integrated into the existing inserting head without complex additional components
3Measurement precision
If the retractable member is extended to increase biasing force, then the pulling force precision is improved, but the device complexity increases due to the additional retractable member mechanism
Solution Approach 1:
The patent merges the retractable member functionality directly into the inserting head structure, combining the biasing force generation mechanism with the terminal insertion mechanism. This integration approach provides precise pulling force control while minimizing device complexity by avoiding separate, standalone components
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 device allows for precise adjustment of the pulling force based on the article numbers of the terminal fittings, ensuring secure and efficient attachment by providing a force difference between the pulling and biasing forces, thus enhancing the assembly process.
Implementation Method 1
pressurized fluid is supplied into the body of the changing means and pressure of the pressurized fluid is changed so that the retractable member changes the biasing force
Data Source
AI summary
A terminal inserting device is provided, by which pulling force to pull a terminal fitting can be changed after the terminal fitting is inserted. The terminal inserting device includes an inserting unit and a control device. The inserting unit includes a front chuck unit and electric wire chuck unit, by which an electric wire is chucked and a terminal fitting attached to the electric wire is inserted into a terminal-receiving chamber of a connector housing. The electric wire chuck unit includes a pair of electric wire chucks, an insertion motor and an air cylinder. The electric wire chucks chuck the electric wire therebetween. The insertion motor pulls the terminal fitting after the terminal fitting is inserted in the terminal-receiving chamber. The air cylinder changes force which brings the pair of the electric wire chucks close to the connector housing so that pulling force to pull the terminal fitting can be changed. The control device controls the air cylinder to change the pulling force.