Movable Connection Member for Motor Drive Bus Bar Replacement
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Solution Overview
Problem
Existing motor drive devices face inefficiencies in replacing motor driving units due to the need to remove and reposition connection members, which can cause mechanical stress and require multiple bus bars of varying lengths, leading to increased maintenance and potential heat generation issues from insufficient current capacity.
Innovation Solution
A connection member comprising a first short bar, a second short bar, and a guide member that allows the second short bar to move relative to the first short bar in the longitudinal direction while maintaining surface contact, enabling easy replacement of motor driving units without removing the connection member from the terminal block and ensuring consistent current supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the connection member uses a traditional bus bar structure with stud bolts and nuts, then the connection is secure, but the replacement of motor driving units requires removing and repositioning the connection member, reducing work efficiency
Solution Approach 1:
The connection member is divided into a first short bar and a second short bar that can be separated from each other. The first short bar remains connected to the terminal block while the second short bar can be detached and reconnected, allowing replacement of motor driving units without completely removing the connection member from the system.
Solution Approach 2:
The connection member incorporates a guide member with a groove that allows the second short bar to move dynamically relative to the first short bar. This enables the second short bar to be extended or retracted along the longitudinal direction, facilitating easy disconnection and reconnection during unit replacement while maintaining surface contact through the guide structure.
2Adaptability or versatility
If the connection member is designed as a single rigid piece, then the structural integrity is high, but it requires multiple bus bars of varying lengths for different configurations, increasing device complexity
Solution Approach 1:
The connection member uses a movable second short bar that can be extended or retracted along the guide member's groove, allowing a single connection member design to adapt to different length requirements. This eliminates the need to maintain multiple bus bars of varying lengths while preserving structural integrity through the guide member constraint.
Solution Approach 2:
The guide member with its groove structure serves multiple functions: it guides the movement of the second short bar, maintains surface contact between the short bars, and enables both extension and retraction motions. This single component provides adaptability for different configurations without requiring additional specialized parts.
3Ease of operation
If the connection member allows movement for easy replacement, then the ease of operation improves, but maintaining surface contact between moving parts becomes difficult, potentially causing mechanical stress
Solution Approach 1:
The guide member acts as an intermediary between the first and second short bars. Its groove structure physically guides and constrains the second short bar's movement, ensuring that surface contact is maintained throughout the extension and retraction motions. This intermediary component prevents direct problematic contact while enabling the necessary movement for easy replacement.
Solution Approach 2:
The connection member is designed to dynamically maintain surface contact through the guide member's groove, which constrains the second short bar to move only along the longitudinal direction. This dynamic constraint ensures continuous surface contact during movement, preventing mechanical stress while allowing easy replacement operations.
Data Source
AI summary
A connection member includes: a first short bar whose one end is attached to a first terminal block; a second short bar which extends in a longitudinal direction of the first short bar and whose one end is attached to a second terminal block, at least part of the other end of the second short bar overlapping the first short bar; and a guide member which is attached to an overlapping part of the first short bar and the second short bar and which allows the second short bar to move relative to the first short bar in the longitudinal direction while maintaining surface contact between the first short bar and the second short bar at the overlapping part.