Compact Servo With Central Cutout Output Arm
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Solution Overview
Problem
Conventional servos with a servo disc connected to the output shaft lack compactness due to inefficient use of space.
Innovation Solution
A servo design featuring a housing with a central cutout for the output arm, allowing it to rotate within the housing and connect securely to the servo output shaft, along with a gear transmission mechanism that saves internal space and enables 180-degree rotation, enhancing compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a servo disc is connected to the end of the output shaft, then the servo can transmit rotation effectively, but the overall structure becomes less compact and space utilization deteriorates
Solution Approach 1:
The output arm is repositioned from the end of the output shaft to the central region of the housing, utilizing the central space dimension that was previously underutilized. This dimensional repositioning allows the output arm to rotate within the housing rather than extending outward, significantly improving compactness while maintaining rotation transmission functionality
Solution Approach 2:
The output arm is nested within the housing structure, with its rotation path contained inside the housing boundaries. The cutout in the housing allows the output arm to extend slightly for connection purposes while remaining primarily nested within the housing volume, achieving space-efficient packaging
Data Source
AI summary
A servo includes a housing, a motor, a printed circuit board (PCB) and a servo output shaft that are accommodated within the housing. The motor is electrically connected to the PCB. The housing has a lateral side defining a cutout. The servo further includes a gear transmission mechanism and an output arm. The gear transmission mechanism is used to connect a motor output shaft of the motor to the servo output shaft. The output arm has an end that is arranged within the housing at a substantially central position and connected to the servo output shaft, and another end extending out of the housing to connect with an external component.