Electric Component Connection Structure with Sealing Protrusion
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Solution Overview
Problem
Existing connection structures for electric components, such as motors, fail to maintain a secure electrical connection under severe vibration and dust conditions.
Innovation Solution
A connection structure that includes a base member with an accommodation recessed part for the connector and a cover member that seals the connection with a sealing material, featuring a protruded part to enhance sealing and reduce material usage, along with a method involving a filling and hardening process to fix the components together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connector is directly connected to a connection terminal without additional sealing structures, then the device complexity is reduced, but the reliability of electrical connection under severe vibration and dust conditions deteriorates
Solution Approach 1:
The patent combines multiple functions into the sealing material: it seals the connection between the connector and connection terminal, fixes the connector in position, and provides mechanical strength. This integration of sealing, fixing, and structural support functions into a single material resolves the contradiction by achieving high reliability without adding separate complex components.
Solution Approach 2:
The sealing material serves multiple purposes simultaneously: electrical insulation, environmental sealing against dust and moisture, mechanical fixation of the connector, and structural reinforcement. This multi-functionality allows the system to achieve reliable electrical connection under severe conditions while maintaining simple overall structure.
2Reliability
If a large amount of sealing material is used to fill the accommodation recessed part, then the sealing performance is improved, but the loss of substance increases and the protruded part cannot effectively control leakage
Solution Approach 1:
The protruded part creates a localized reinforcement zone within the sealing material where the material is concentrated at the critical connection interface between the connector and accommodation recessed part. This local concentration of sealing material at the most vulnerable point provides effective sealing and prevents leakage without requiring excessive material throughout the entire space.
Solution Approach 2:
The protruded part acts as an intermediary structure that guides and contains the sealing material, directing it to the precise location where sealing is most needed. This mediator structure ensures the sealing material is used efficiently at the critical interface while preventing its leakage, thereby improving sealing performance without increasing overall material consumption.
3Reliability
If the cover member is attached to the base member without a protruded part structure, then the manufacturing process is simpler, but the sealing state cannot be firmly maintained and sealing material may leak
Solution Approach 1:
The cover member is divided into distinct functional zones: the protruded part that interfaces with the sealing material, the main body that provides structural coverage, and the attachment portion that connects to the base member. This segmentation allows each part to perform its specific function optimally - the protruded part maintains sealing, while the rest of the structure remains simple to manufacture.
Solution Approach 2:
The protruded part is pre-formed on the cover member before assembly, creating a built-in sealing reinforcement feature that automatically engages with the sealing material during the attachment process. This preliminary formation of the sealing structure eliminates the need for additional sealing steps or complex assembly operations, maintaining ease of manufacture while ensuring firm sealing state stability.
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 structure ensures a strong and reliable connection between the electric component and connector, even under harsh conditions, by providing a robust seal and fixing the components with the sealing material, thus maintaining electrical integrity.
Implementation Method 1
an inside of the accommodation recessed part is filled with a sealing material which seals the connected portion between the connection terminal and the connector
Implementation Method 2
the sealing material fixes the connected portion, the base member and the cover member to each other
Implementation Method 3
an inner face of the cover member facing the accommodation recessed part is formed with a protruded part which is protruded toward the sealing material filled in the accommodation recessed part and is adhered to the sealing material
Data Source
AI summary
A connection structure of an electric component, a motor and a connection method of an electric component are provided. The connection structure of the electric component includes: an electric component main body having a connection terminal; a connector for wiring which is connected with the connection terminal; a base member; and a cover member. The base member is provided with an accommodation recessed part which accommodates inside a connected portion between the connection terminal and the connector. The accommodation recessed part has an opening part opened to an upper side. The cover member is attached to the base member so as to cover the opening part. An inside of the accommodation recessed part is filled with a sealing material which seals the connected portion between the connection terminal and the connector, and the sealing material fixes the connected portion, the base member and the cover member to each other.