Motor Terminal Bend Structure for Stable Sensor Wiring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotating devices face issues with terminal reliability under external forces, flexible board connection stability, and sensor performance degradation due to improper wiring board disposition.
Innovation Solution
The rotating device incorporates a motor with a connection terminal featuring a bent portion crossing the insertion/removal direction, a housing with contact surfaces for the terminal, a flexible board overlapped via a bonding member with lands, and a sensor with an arc-shaped wire contact and rotatable board holes for improved stability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a straight terminal structure is used, then the structure is simple, but the terminal cannot withstand external force in removal direction
Solution Approach 1:
The terminal is designed with a bent portion that curves in a direction crossing the insertion/removal direction. This curvature allows the terminal to withstand external forces by distributing stress along the bent path rather than creating a weak straight line, thereby improving reliability while maintaining structural simplicity
Solution Approach 2:
The terminal structure transitions from a one-dimensional straight line to a two-dimensional bent path. The bent portion extends the terminal in multiple directions, creating a more robust connection that can resist forces from various angles while maintaining overall structural simplicity
2Device complexity
If the flexible board is connected without a bonding member, then the structure is simple, but the flexible board cannot be firmly connected
Solution Approach 1:
Holes are pre-formed in the flexible board at strategic positions before the bonding process. These pre-positioned holes guide the bonding member to the exact locations where connection is needed, ensuring firm connection while keeping the overall structure simple and the bonding process efficient
3Device complexity
If the wiring board is disposed in a conventional manner, then the structure is simple, but sensor performance degrades
Solution Approach 1:
The wiring board is disposed with specific local characteristics: holes are positioned at precise locations relative to the sensor, and the wire pattern follows an arc shape that corresponds to the sensor's detection arc. This localized optimization of the wiring board disposition ensures accurate sensor performance while maintaining overall structural simplicity
Data Source
AI summary
A rotating device according to the present invention comprises a motor, a connection terminal electrically connecting the motor with an external device, and a housing accommodating the motor and the connection terminal. The connection terminal includes a bent portion bent in a direction crossing an insertion direction or a removal direction of the connection terminal. The housing includes a contact surface in contact with the bent portion.