Integrated Actuator Cover for Fluid Pressure Actuator Durability
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Solution Overview
Problem
Conventional fluid pressure actuators face issues with durability due to rubbing against objects and adherence of moisture and dirt, which degrade their performance.
Innovation Solution
A holding member with an actuator cover that integrates a holding section and an actuator cover, where the holding section is attached to the fluid pressure actuator to hold objects, and the actuator cover covers the actuator, preventing rubbing and moisture/dirt ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fluid pressure actuator is used to hold objects, then the holding function is achieved, but the actuator is rubbed against objects and moisture/dirt adhere to it, reducing durability
Solution Approach 1:
A holding section is introduced as an intermediary component between the fluid pressure actuator and the object. The holding section includes a claw that contacts the object, while the actuator itself remains protected. This mediator prevents direct contact between the actuator and object, eliminating rubbing and moisture/dirt adherence to the actuator.
Solution Approach 2:
The holding section is made of flexible elastic material that can deform to hold objects securely. This flexible structure allows the holding function to be performed without requiring the rigid actuator to contact the object directly, protecting the actuator while maintaining holding capability.
2Reliability
If a holding section is added to protect the actuator, then durability is improved, but the device complexity increases
Solution Approach 1:
The holding section and actuator cover are integrated into a single unified structure. The holding section is formed as an integral part of the actuator cover, eliminating the need for separate components and reducing assembly complexity while maintaining the protective function.
Solution Approach 2:
The actuator cover is designed to serve multiple functions: it protects the actuator from rubbing and moisture/dirt, and simultaneously provides the holding function through its integrated holding section with claw. This multi-functionality reduces the need for additional separate components.
3Reliability
If the holding section is integrally formed with the actuator cover, then moisture/dirt entry through gaps is prevented, but manufacturing complexity increases
Solution Approach 1:
The holding section and actuator cover are formed as a single integral structure through injection molding. This eliminates gaps between separate components that could allow moisture and dirt entry, while the injection molding process makes the integral formation manufacturable without excessive complexity.
4Strength
If the holding section has a claw for holding objects, then holding security is improved, but friction with objects increases causing wear
Solution Approach 1:
The claw of the holding section serves as the intermediary that contacts the object, not the actuator itself. The claw is designed with appropriate friction characteristics to securely hold objects, while the actuator remains protected from wear. The mounting protrusion and recess interface provides a wear-resistant connection between the holding section and actuator.
Data Source
AI summary
The object is to improve the durability of fluid pressure actuators. The holding member with actuator cover according to this disclosure comprises: a holding section to be attached to a fluid pressure actuator driven by fluid pressure to hold an object; and an actuator cover that covers the fluid pressure actuator while the holding section is attached to the fluid pressure actuator.