Modular Servo Case with Spherical Interface for Flexible Mounting
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Solution Overview
Problem
Conventional servo cases and attachments limit the mounting options and mechanical capacity, making it difficult to engage non-matching shafts and structures, and they lack durability and versatility for various applications.
Innovation Solution
A modular case for servos that can be configured as a moveable module with mechanical components to engage the output shaft, allowing for unlimited mounting options and connection with other modules through flat lateral surfaces, enhancing durability and mechanical capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional servo cases with fixed mounting tabs are used, then manufacturing is simple and cost-effective, but mounting options are limited
Solution Approach 1:
The case is divided into two separable portions: a first portion containing mounting features and a second portion containing the servo enclosure. This segmentation allows the mounting portion to be independently configured with various mounting options while keeping the servo enclosure simple and manufacturable.
Solution Approach 2:
The first case portion is designed with multiple mounting tabs and connector points that can accommodate various mounting configurations and connection types. This universal design allows a single case structure to serve multiple mounting purposes, increasing adaptability without proportionally increasing complexity.
2Strength
If hobby servos with limited torque are used, then cost is reduced and accessibility is improved, but mechanical capacity is insufficient for heavy loads
Solution Approach 1:
A spherical interface is provided between the servo output shaft and the driven mechanism. This spherical geometry allows the hobby servo to drive loads in multiple directions and orientations, effectively increasing its mechanical capacity beyond what a traditional linear shaft could handle, while maintaining compatibility with inexpensive hobby servos.
Solution Approach 2:
The spherical interface acts as an intermediary between the hobby servo and the driven mechanism. It translates the limited rotational output of the hobby servo into multi-directional movement capability, enabling the servo to handle applications that would otherwise require more expensive, higher-torque servos.
3Strength
If the output shaft is made durable for heavy loads, then mechanical capacity increases, but the shaft becomes harder to engage with various mechanisms
Solution Approach 1:
The output interface is designed as a spherical element rather than a traditional keyed or splined shaft. This spherical geometry naturally accommodates various engagement mechanisms and orientations, maintaining adaptability while the spherical structure itself can be made durable to handle heavy loads in multiple directions.
4Adaptability or versatility
If fixed mounting configurations are used, then manufacturing precision requirements are reduced, but mounting flexibility is limited
Solution Approach 1:
By separating the mounting functions into distinct tabs and connector points on the first case portion, each mounting feature can be independently positioned and adjusted. This reduces the overall precision requirements compared to having all mounting holes precisely aligned in a fixed pattern, while still providing flexible mounting options.
Data Source
AI summary
The present invention relates to a case for a servomotor having a rotatable output shaft, wherein the case comprises at least a partial interior volume or enclosure for enclosing at least a portion of the servo; a front end having a front face; and a front rotatable disc located at the front end, at least a portion of the front rotatable disc projecting out from the front face, the front rotatable disc configured to directly or indirectly functionally engage the output shaft and to be rotated thereby.