Crimp Terminal Recess Design for Coating Agent Flow Control
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Solution Overview
Problem
The existing crimp terminals face issues with coating agent flow-out during curing, leading to potential electrical troubles and increased resistance due to dirt deposition, and adjusting viscosity or terminal inclination complicates the process, increasing costs and reducing efficiency.
Innovation Solution
A crimp terminal design with recesses at non-coating parts to collect and cure the coating agent, preventing flow-out and ensuring proper curing without the need for special jigs or increased viscosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coating agent is coated on the crimping piece and then cured by irradiation, then the electrical resistance decreases, but the coating agent flows out from the coating part toward the non-coating part during the curing time
Solution Approach 1:
The patent applies preliminary action by forming recesses in the non-coating part before coating the coating agent. These recesses are pre-positioned to receive and contain the coating agent during the curing process, preventing it from flowing to unwanted areas while still allowing the coating to be applied and cured effectively
2Shape
If the viscosity of the coating agent is increased to prevent flow-out, then the coating agent remains in place, but the penetrating ability decreases and curing time increases
Solution Approach 1:
Instead of modifying the coating agent's viscosity, the patent uses preliminary action by creating recesses in advance that physically contain the coating agent. This allows the coating agent to maintain its original low viscosity for good penetrating ability and fast curing, while the pre-formed recesses prevent flow-out during the curing process
3Shape
If the terminal is disposed in an inclined condition to prevent flow-out, then the coating agent stays in place, but special jigs are required and facility cost increases
Solution Approach 1:
The patent eliminates the need for inclined positioning and special jigs by using preliminary action - forming recesses directly in the terminal body. These recesses provide passive containment of the coating agent through gravity and surface tension alone, allowing the terminal to be processed in any orientation without additional facility complexity
4Shape
If the coating agent is allowed to flow out and cure on the non-coating part, then a coating film is formed over a wide range, but electrical troubles may occur
Solution Approach 1:
The patent uses preliminary action to prevent the harmful effect of coating agent flow-out to non-coating areas. By forming recesses in advance in the non-coating part, the coating agent is contained within these recesses rather than flowing onto surfaces where it could cause electrical troubles. This maintains proper coating film coverage only where needed
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
Prevents coating agent flow-out, maintains low electrical resistance, and enhances operational efficiency by allowing for immediate curing without increasing facility costs or complexity.
Implementation Method 1
a photo-curing resin and an electron radiation curing resin which are cured respectively by irradiation of light and by irradiation of an electron beam
Implementation Method 2
a photo-curing resin and an electron radiation curing resin which are cured respectively by irradiation of light and by irradiation of an electron beam
Data Source
AI summary
A wire-equipped crimp terminal includes a wire, a crimp terminal and a coating agent. The wire has a conductor exposed from an insulative sheath. The crimp terminal has a crimping piece which is press-deformed to embrace the conductor. The coating agent is coated to a first part of the crimp terminal. A recess is formed at a non-coating part of the crimp terminal where the coating agent is not coated. The coating agent is cured by irradiating light or an electron beam to the first part in a state where a part of the coating agent flowing out from the first part is received in the recess.