Segmented Short Bar for Motor Drive Unit Assembly
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Solution Overview
Problem
Existing motor drive devices require complete removal and reinstallation of short bars during replacement of motor driving units, which is time-consuming and inefficient.
Innovation Solution
A short bar design with a strip-plate-like fixed portion and connection portions that allow for electrical and mechanical connection and disconnection through relative movement in the thickness direction, enabling easy assembly and replacement of motor driving units without removing screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If short bars are completely removed and reinstalled during replacement of motor driving units, then reliable electrical connection is ensured, but replacement time and work efficiency deteriorate
Solution Approach 1:
The short bar is divided into a fixed portion (with through holes for screws) and connection portions (with protrusions or sockets). This segmentation allows the fixed portion to remain attached to the terminal block while the connection portions can be quickly connected or disconnected, enabling rapid replacement without complete removal of the short bar.
Solution Approach 2:
The connection portions are designed to be dynamically connectable and disconnectable through relative movement in the thickness direction. This dynamic design allows the short bar to transition between connected and disconnected states quickly, reducing replacement time while maintaining reliable electrical connection when connected.
2Manufacturing precision
If short bars are completely removed during replacement, then proper installation can be verified, but work efficiency and productivity deteriorate
Solution Approach 1:
By segmenting the short bar into fixed and connection portions, the invention allows verification of proper installation through the fixed portion while enabling quick connection/disconnection of the connection portions, thus maintaining installation accuracy without sacrificing productivity.
Solution Approach 2:
The fixed portion is preliminarily attached to the terminal block with screws, ensuring proper installation position and accuracy. The connection portions are pre-configured with protrusions or sockets that guide correct alignment, allowing verification of installation without requiring complete removal and reinstallation.
3Ease of manufacture
If traditional short bars are used without connection portions, then manufacturing simplicity is maintained, but ease of operation and ease of repair deteriorate
Solution Approach 1:
The short bar is segmented into fixed and connection portions, where the fixed portion maintains manufacturing simplicity with standard through holes, while the connection portions incorporate protrusions or sockets for easy assembly through simple relative movement, significantly improving ease of operation.
4Strength
If screws are used for complete removal, then secure fixation is achieved, but replacement time and complexity increase
Solution Approach 1:
The short bar is segmented so that screws are only used for the fixed portion to achieve secure fixation, while the connection portions use protrusion-socket interfaces that require no screws for connection or disconnection, reducing replacement complexity while maintaining fixation strength where needed.
Solution Approach 2:
The connection portions are designed with dynamic protrusion-socket interfaces that allow quick connection and disconnection without screws, reducing replacement complexity. The fixed portion maintains static screw fixation for secure attachment, creating a hybrid system that optimizes both fixation strength and replacement ease.
Data Source
AI summary
A short bar for connecting terminal blocks of two motor driving units which drive a motor includes a strip-plate-like fixed portion which has a through hole into which a screw for fixing is inserted and which is fixed to the terminal block of the motor driving unit with the screw, a first connection portion which is provided on one end of the fixed portion, and a second connection portion which is provided on the other end of the fixed portion, wherein the first connection member has a configuration that the first connection portion and the second connection portion of another shot bar can be connected electrically and mechanically with each other through a relative movement in the thickness direction of the fixing member.