Motor Drive PCB Connector Assembly for Vibration-Stable Mounting
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Solution Overview
Problem
Conventional electric motor drive devices face challenges in assembly automation due to complex board connection structures, which lead to increased assembly time and noise generation, and are prone to deterioration in vibration or shock environments.
Innovation Solution
The device employs a first and second fixing member with protrusions and guide surfaces to securely fix vertically arranged circuit boards without screws, along with a support member to prevent sagging, and uses connector coupling with through-hole guides for easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circuit boards are connected with wires or cables, then electrical signal connection is achieved, but noise signal generation increases and assembly complexity increases
Solution Approach 1:
The patent removes wires and cables from the circuit board connection system, extracting the harmful noise-generating elements while maintaining electrical connectivity through direct connector coupling between circuit boards
Solution Approach 2:
The patent merges the electrical connection function directly into the circuit board structure through integrated connectors, eliminating the need for separate wire or cable connections and reducing assembly complexity
2Ease of manufacture
If circuit boards are vertically arranged without separate coupling, then assembly is simplified, but connection stability deteriorates in vibration or shock environments
Solution Approach 1:
The patent implements a nested structure where the second circuit board is inserted into a recess of the first circuit board, and fixing members are embedded within the first circuit board to secure the connection, creating a compact and stable integrated assembly
Solution Approach 2:
The patent incorporates fixing members预先 (in advance) within the first circuit board structure, so that when the second circuit board is inserted, it is automatically secured without requiring additional assembly steps, ensuring stability before vibration or shock occurs
3Reliability
If fixing members are used to secure circuit boards, then connection stability is improved, but assembly complexity increases
Solution Approach 1:
The patent merges the fixing members with the first circuit board structure, integrating the securing function into the board itself rather than using separate external fasteners, thereby reducing overall device complexity while maintaining connection stability
Data Source
AI summary
An electric motor drive device is provided. The electric motor drive device according to an embodiment of the present disclosure to which an operation module is connected, may comprise: a first case having a first surface formed therein; a second case having an inner accommodation space formed therein and having an outer portion to which the operation module is coupled; a first circuit board disposed at the first surface and having a first connector at one side thereof, a second circuit board disposed within the second case and having a second connector; and a first fixing member formed to protrude from the first surface.