Electronic Control Device Vibration Damping for On-Board Transmission
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Solution Overview
Problem
Existing electronic control device structures for vehicles face challenges in reducing assembly complexity and cost, while also mitigating the effects of vibration and external forces, particularly when directly mounted on the on-board transmission.
Innovation Solution
The solution involves a substrate with a base and cover housing electronic components, including vibration-suppressing parts and heat-dissipating materials, with connectors mounted on the same surface for simplified assembly and reduced vibration impact, using resin or metal pins and screws integrated with vibration-damping members for stress relief.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the electronic control device is directly mounted on the on-board transmission to eliminate the harness, then cost and mounting space are reduced, but the device becomes more susceptible to vibration and heat effects
Solution Approach 1:
A vibration-damping member is introduced as an intermediary component between the connector and the base. This mediator absorbs and dampens vibration transmitted from the on-board transmission, protecting the electronic control device while maintaining the direct mounting structure that reduces cost and space
Solution Approach 2:
The vibration-damping member is pre-installed in the recess of the base before the connector is fixed to it. This beforehand cushioning prepares the mounting structure to absorb vibration effects before they reach the electronic components, preventing damage while maintaining the simplified direct mounting approach
2Ease of manufacture
If the connector is fixed directly to the base without vibration damping, then assembly is simpler, but vibration from the on-board transmission damages the connector and substrate
Solution Approach 1:
The vibration-damping member serves as a mediator between the connector and the base, providing vibration protection while maintaining assembly simplicity. The member is simply placed in the recess and the connector is fixed over it, preserving ease of manufacture while enhancing reliability
Solution Approach 2:
The mounting structure uses composite materials - the vibration-damping member is made of a material with different damping properties than the metal base. This composite approach combines the structural integrity of the metal base with the vibration-absorbing properties of the damping material, protecting connectors while maintaining assembly simplicity
3Productivity
If multiple connectors are mounted on the same substrate surface, then assembly process is simplified, but vibration effects are concentrated and amplified
Solution Approach 1:
Each connector mounting location on the substrate has its own dedicated vibration-damping member in the base recess. This local quality approach ensures that vibration effects are dampened at each specific connector location, preventing concentrated vibration damage while maintaining the productivity benefit of mounting multiple connectors on the same surface
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
This configuration simplifies the assembly process, reduces the effects of vibration and external forces, and enhances the reliability of electronic components and connectors by effectively absorbing and dissipating vibrations and stresses.
Implementation Method 1
a first vibration-suppressing part disposed on an inside surface of the base, the inside surface of the base facing an end face of the first connector on a side adjacent to the second surface, the first vibration-suppressing part suppressing vibration of the first connector
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Provided is an electronic control device that is easily assembled and with which it is possible to reduce the effects of vibration and external force applied from a connector. Electronic components 8 are installed on a substrate 6. A base 4 covers a surface F1 of the substrate 6. A cover 5 covers a surface F2 of the substrate 6. A first connector 22, which is installed on the surface F2, connects to a connector 21 fixed to an on-board transmission 2. A second connector 32, which is installed on the surface F2, connects to a connector 31 of a harness 3. First vibration-suppressing parts 41, 71, which are provided to the inside surface of the base 4 facing the end surface of the first connector 22 on the surface F2 side, suppress the vibration of the first connector 22.