Resin Case for Transmission Control Unit with Heat Release Ribs
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Solution Overview
Problem
Existing resin cases for vehicle transmission control units suffer from wear and damage due to vibrations, inadequate heat dissipation, and water penetration during pressure washing, which compromises the integrity and functionality of the control unit's terminals and electronic components.
Innovation Solution
A resin case with a ribbed outer surface that enhances rigidity, acts as a heat release rib, and includes peripheral and connection ribs to surround connectors, preventing water ingress and improving waterproofing, thereby reducing wear and enhancing the resilience of the control unit's terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a resin case is used for the control unit, then the control unit can be protected and assembled easily, but the case lacks sufficient rigidity causing terminal wear due to vibration
Solution Approach 1:
The patent combines resin material with metal inserts or reinforcement structures to create a composite case that maintains the ease of resin molding and assembly while adding the rigidity and vibration resistance of metal components
Solution Approach 2:
The case is divided into multiple sections or components that can be separately manufactured and then assembled, allowing critical structural areas to use rigid materials while maintaining overall ease of assembly through modular construction
2Ease of manufacture
If the resin case structure is simplified, then manufacturing is easier and cost is reduced, but heat dissipation capability deteriorates
Solution Approach 1:
The case design incorporates localized heat dissipation features such as fins or vents in specific areas where heat generation occurs, while keeping other portions of the case simple and easy to manufacture
Solution Approach 2:
The case includes thermally conductive pathways that actively channel heat away from critical components, creating a passive thermal management system that responds to heat generation without complex active controls
3Ease of operation
If connectors are exposed on the case surface for electrical connection, then wiring is simplified, but water penetration during pressure washing occurs
Solution Approach 1:
The connectors are nested within recessed areas or cavities in the case surface, allowing electrical connections to be made while the case structure itself provides waterproof protection during pressure washing
Solution Approach 2:
Waterproof seals, gaskets, or protective coatings are introduced as intermediary elements between the connectors and the external environment, allowing electrical connectivity while preventing water ingress during pressure washing
4Productivity
If the resin case is made thinner to reduce weight and material usage, then productivity improves, but vibration resistance and terminal protection deteriorate
Solution Approach 1:
Thin-walled resin case reinforced with internal rib structures, metal inserts, or composite material layers that provide enhanced vibration resistance and terminal protection without significantly increasing material usage or weight
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 resin case effectively suppresses wear and damage from vibrations, improves heat dissipation, and enhances waterproofing, ensuring the reliability and longevity of the control unit's terminals and electronic components.
Implementation Method 1
the surface area of the resin case of the control unit is increased, thereby enabling more heat from the control unit to be dissipated
Data Source
AI summary
A resin case is placed directly on an external wall of a vehicle transmission, and configures an outer peripheral side of a control unit for the transmission, with a connector to be joined to a harness connected to a functional component inside the transmission being electrically connected to the control unit. The resin case includes a case body and a rib provided to an outer surface of the case body. For example, the rib configures a heat release rib.