Projection Linear Actuator Housing for Concealed Wound Rollers
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Solution Overview
Problem
In protruding type linear actuators, the pair of wound portions and the clockwise/counterclockwise rotation gear are exposed, leading to potential contact issues when mounted on robots, which affects operability.
Innovation Solution
A housing is designed to accommodate the wound portions and rollers, allowing them to be housed internally, with the elongated plates overlapping and protruding externally for linear movement, while using a drive roller and rotatable roller for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pair of wound portions and rotation gear are exposed to the outside for direct access, then ease of operation is improved, but reliability deteriorates due to potential contact issues with robot components
Solution Approach 1:
The patent applies nesting by placing the wound portions and rotation gear inside a housing structure. The elongated plates extend through the housing to provide external access while the critical components remain concealed within the housing, preventing contact with robot components while maintaining operational capability.
2Reliability
If the wound portions and gears are concealed inside a housing, then reliability is improved by preventing external contact, but device complexity increases due to additional housing structure
Solution Approach 1:
The housing structure serves multiple functions simultaneously: it conceals the wound portions and rotation gear to prevent contact with robot components, provides structural support for the actuator, and guides the elongated plates as they extend through the housing. This multi-functionality reduces the need for additional separate components.
3Ease of operation
If the elongated plates are made to protrude externally for linear movement, then ease of operation is improved for mounting and actuation, but object-generated harmful factors increase due to potential contact with robot portions
Solution Approach 1:
The patent extracts only the necessary functional elements (the elongated plates) to extend through the housing for external operation, while leaving the critical components (wound portions and rotation gear) concealed inside. This selective extraction allows external actuation while minimizing exposure of components that could cause contact issues with robot portions.
Data Source
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AI summary
To provide a protruding type linear actuator that can improve operability as compared with the related art. Since a protruding type linear actuator 10 can accommodate a pair of wound portions 25a, 25b, a drive roller 30a, and a rotary encoder 30b inside a housing to make them not exposed to the outside, for example, even when the protruding type linear actuator 10 is attached to a slider of an arm robot, the wound portions 25a, 25b, the drive roller 30a, and the rotary encoder 30b do not come into contact with other portions such as the slider, and an attachment work can be performed without considering positions of the wound portions 25a, 25b, the drive roller 30a, and the rotary encoder 30b. Therefore, operability can be improved as compared with the related art.