Wire Connector Guide Structure for Rear Holder Removal
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Solution Overview
Problem
The existing connector design interferes with the insulation coating of the wire when attempting to remove the rear holder, making it difficult to perform repair operations.
Innovation Solution
The connector incorporates a resilient piece with an inclined guide portion that guides the core wire into the terminal, allowing the rear holder to be easily removed by deforming the resilient piece when separating from the connector housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a guide portion is provided on the inner wall of the insertion hole to guide the core wire insertion, then the core wire can be reliably inserted into the terminal, but the guide portion interferes with the insulation coating when removing the rear holder, preventing the rear holder from being removed
Solution Approach 1:
The guide portion is made movable by forming it on a resilient piece that can elastically deform. During assembly, the resilient piece is in a first state where the guide portion guides the core wire into the terminal. During disassembly, the resilient piece is in a second state where the guide portion is retracted to avoid interfering with the insulation coating, enabling the rear holder to be removed.
Solution Approach 2:
The position of the guide portion is changed by utilizing the elastic deformation of the resilient piece. The resilient piece transitions between a first state (guiding position) and a second state (retracted position), thereby changing the spatial parameter of the guide portion to resolve the contradiction between guiding function and removability.
2Ease of operation
If the guide portion is shaped to be located more inwardly of the insertion hole toward the front, then it effectively guides the core wire by sliding in contact, but it creates interference with the insulation coating during rear holder removal
Solution Approach 1:
The guide portion is transformed from a fixed structure to a dynamic structure by attaching it to the resilient piece. The resilient piece allows the guide portion to move between an extended position (for effective guidance) and a retracted position (for easy removal), thereby resolving the contradiction between guidance effectiveness and removal ease.
3Reliability
If the rear holder is held at a temporary locking position during assembly, then the terminal can be properly positioned in the connector housing, but the rear holder cannot be removed for repair operations
Solution Approach 1:
The guide portion's ability to dynamically change position enables the rear holder to be securely held during assembly (when the resilient piece is in the first state providing guidance) and easily removed for repairs (when the resilient piece is in the second state with the guide portion retracted to avoid the insulation coating).
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
Enables easy insertion and removal of the core wire, facilitating repair and maintenance of the connector without damaging the insulation coating.
Implementation Method 1
the resilient piece being resiliently deformable in a direction intersecting an extension direction of the wire
Data Source
AI summary
A connector is to be connected to a wire including a core wire and an insulation coating covering an outer periphery of the core wire and extending in a front-rear direction, and provided with a terminal to be connected to the core wire, a connector housing for accommodating the terminal inside and a rear holder to be attached to a rear part of the connector housing. The terminal includes a terminal body and a slide portion slidable in the front-rear direction while being externally fit to the terminal body. The terminal body includes a sandwiching portion for sandwiching the core wire. The slide portion includes a core wire insertion opening, through which the core wire is inserted from behind, and a pressing portion for pressing the sandwiching portion against the core wire inserted through the core wire insertion opening.