Three-Axis Gimbal Wiring Layout to Prevent Wire Winding
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Solution Overview
Problem
Existing gimbals face issues with wire winding and scraping due to flexible printed circuit boards, leading to increased thickness and limited signal transmission rates, and direct motor connections restrict rotation angles and service life.
Innovation Solution
A three-axis gimbal design where conductive wires are arranged within electromechanical coupling apparatuses and pass through axes, integrated into the support arm, using coaxial wires to prevent wire winding and scraping, enabling compact and reliable operation with high-speed data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flexible printed circuit board is used for connection bus, then electrical connection is achieved, but wire winding and scraping occur leading to increased thickness and limited signal transmission rates
Solution Approach 1:
The patent extracts the flexible printed circuit board from the motor shaft surface and relocates it to the motor shell, separating the connection bus from the rotating component. This eliminates the wire winding and scraping issues that caused thickness increase and signal transmission limitations.
Solution Approach 2:
The patent introduces a motor shell as an intermediary structure that houses the connection bus. The motor shell acts as a mediator between the motor shaft and the external environment, providing a stable mounting location for the flexible printed circuit board that does not rotate, thereby preventing wire damage and maintaining signal transmission quality.
2Reliability
If flexible printed circuit board winds around motor shaft, then electrical connection is maintained, but wire winding and scraping occur during rotation
Solution Approach 1:
The flexible printed circuit board is extracted from the rotating motor shaft surface and relocated to the stationary motor shell. This separation removes the source of wire winding and scraping problems while maintaining electrical connection stability between the motor shaft and control circuit.
Solution Approach 2:
The motor shell serves as an intermediary structure that provides a stationary mounting location for the connection bus. This intermediary approach allows the motor shaft to rotate freely while the connection bus remains stationary, eliminating harmful wire winding and scraping effects.
3Device complexity
If direct motor connection is used, then structure is simplified, but rotation angles are restricted and service life is limited
Solution Approach 1:
The motor shell acts as an intermediary structure between the motor shaft and the external environment. By mounting the connection bus on the motor shell rather than directly connecting to the rotating shaft, the system achieves both structural simplicity and full rotation capability, as the connection point remains stationary while the shaft rotates freely.
Data Source
AI summary
A three-axis gimbal and three-axis gimbal photographing apparatus are provided. The first electromechanical coupling apparatus of the three-axis gimbal includes a first hollow motor shaft. The first hollow motor shaft has a first accommodation cavity. A second electromechanical coupling apparatus includes a second hollow motor shaft. The second hollow motor shaft has a second accommodation cavity. A pitch axis arm includes a pitch axis accommodation cavity, A roll axis component includes a first conductive wire configured in the first accommodation cavity and the roll axis arm accommodation cavity. A pitch axis component includes a second conductive wire configured in the second accommodation cavity and the pitch axis arm accommodation cavity. The first conductive wire is connected to the second conductive wire.