Motor Drive Connector Layout for Compact Waterproof Assembly
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Solution Overview
Problem
The existing drive devices face challenges in maintaining a compact size, particularly in the radial direction, due to the increase in the number of terminals in the connector unit, which affects mountability and requires additional space, and conventional seal members complicate assembly.
Innovation Solution
The drive device incorporates a coaxial arrangement of the control unit with a motor, a connector unit, a cover, and a seal member, where the connector unit includes a base portion elongated in a predetermined direction and a connector fixing portion protruding radially within ±45°, allowing the connector unit to be accommodated within a circular shape, and the seal member is positioned between the connector unit and the cover to create a waterproof structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of terminals in the connector unit is increased, then the connectivity and functionality are improved, but the radial size of the drive device increases
Solution Approach 1:
The connector unit base portion is designed with an elongated shape in a predetermined direction, transforming the terminal arrangement from a radial distribution to a linear distribution along the elongation direction. This dimensional reorganization allows multiple terminals to be arranged along the length of the base portion rather than spreading radially, thereby increasing terminal count without increasing radial size.
2Adaptability or versatility
If the connector unit size is increased to accommodate more terminals, then the connectivity is improved, but the mountability deteriorates
Solution Approach 1:
By arranging terminals along the elongation direction of the base portion rather than distributing them radially, the connector unit accommodates more terminals within a compact radial footprint, thereby maintaining ease of mounting while increasing terminal capacity.
3Reliability
If a conventional seal member is used between the connector unit and cover, then the waterproofing is achieved, but the assembly complexity increases
Solution Approach 1:
A rubber seal member with an annular cross-section is used to provide waterproofing between the connector unit and cover. The flexible nature of the rubber seal allows it to conform to the mating surfaces and provide effective sealing without requiring complex assembly procedures or additional sealing components.
Data Source
AI summary
A drive device includes a motor, a control unit, a connector unit, a cover, and a seal member. The control unit is arranged coaxially with the motor and configured to control a drive of the motor. The connector unit connects the control unit to an external connector. The cover is a member separate from the connector unit and covers the control unit. The seal member is provided between the connector unit and the cover.