Split Terminal Substrate Connecting Structure for Motor Devices
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Solution Overview
Problem
In motor devices, the long power supply distance between the power substrate and the control substrate results in increased electrical resistance, reducing the efficiency of power transmission.
Innovation Solution
A substrate connecting structure with a terminal that splits into two parts, allowing direct electrical connection to both substrates, reducing the power supply distance and incorporating low-rigidity portions to accommodate thermal expansion, thereby minimizing stress and maintaining efficient power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electricity is supplied to the control substrate through the power substrate via an inter-substrate connector, then the substrate connecting structure is simple, but the power supply distance becomes long and electrical resistance increases
Solution Approach 1:
The terminal is divided into a first terminal portion connected to the power substrate and a second terminal portion connected to the control substrate. These portions are separated by a predetermined distance, allowing each to be optimally positioned for its respective substrate while maintaining electrical connection through the conductive support, thus reducing overall power supply distance without increasing structural complexity
Solution Approach 2:
A conductive support structure serves as an intermediary element that provides electrical connection between the first terminal portion and the second terminal portion. This mediator allows power to be supplied directly to both substrates simultaneously, eliminating the need for power to pass through the inter-substrate connector and reducing power supply distance
2Stability of the object's composition
If the terminal is rigid to maintain stable connection, then connection stability is good, but thermal expansion stress during temperature changes may cause joint failure
Solution Approach 1:
The support structure incorporates flexible portions with curved surfaces that can dynamically deform in response to thermal expansion and contraction forces. These flexible portions act as shock absorbers, allowing the terminal to maintain stable electrical connection while adapting to temperature-induced dimensional changes, thus preventing joint failure
Solution Approach 2:
The support structure is designed with varying rigidity parameters along its length - rigid portions for stable connection and flexible portions with curved surfaces for stress absorption. This parameter variation allows the structure to maintain connection stability while resisting thermal expansion stress through controlled deformation in specific regions
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 direct electrical connection and low-rigidity design reduce electrical resistance and stress, enhancing power transmission efficiency and maintaining a stable joint state despite thermal changes.
Implementation Method 1
When the substrate connecting structure is repeatedly subjected to a rapid temperature change, the following phenomenon may occur in an area where parts with different coefficients of thermal expansion are joined together
Implementation Method 2
at least the first substrate connecting part is provided with a low-rigidity portion... the first substrate connecting part deforms more easily. As expansion and contraction of the first substrate connecting part are absorbed through deformation
Data Source
AI summary
A substrate connecting structure includes a first substrate, a second substrate facing the first substrate, and a terminal through which electricity is supplied to the first substrate and the second substrate. The terminal has a first substrate connecting part that is connected to the first substrate from a side opposite from the second substrate, and a second substrate connecting part that is provided by splitting from the first substrate connecting part at an intermediate point in the terminal and connected to the second substrate by extending contactlessly through the first substrate from the side opposite from the second substrate toward the second substrate.