Durable Fluid Pressure Actuator

JP2021092228A

Bridgestone Corp

Patent overview

This patent pertains to a fluid pressure actuator equipped with a rubber tube and a multi-layer woven sleeve. The design of the sleeve minimizes the exposure of the rubber tube, enhancing its durability. The inner layer of cords is arranged at a large angle, while the outer layer is arranged at a small angle, increasing contraction force while reducing the exposure of the rubber tube. This design achieves a fluid pressure actuator that can endure prolonged use.

Unique aspects of the patent

Structure that minimizes the exposure of the rubber tube
Innovative angles of the inner and outer layer cords
Design that withstands prolonged use

Traditional issues

Conventional fluid pressure actuators tend to embed the rubber tube within the sleeve mesh, resulting in reduced durability. Additionally, excessive exposure of the rubber tube leads to wear and damage, making them unsuitable for long-term use. Furthermore, designing to enhance contraction force is challenging, requiring efficient operation.

Solution

This patent minimizes the exposure of the rubber tube and enhances its durability by covering it with a multi-layer woven sleeve. The inner layer of cords is arranged at a large angle, while the outer layer is arranged at a small angle, increasing contraction force while reducing the exposure of the rubber tube. This design prevents the rubber tube from embedding into the sleeve mesh, resulting in a fluid pressure actuator that withstands prolonged use.