Title:
ELASTIC TUBE AND ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2023/187997
Kind Code:
A1
Abstract:
A purpose of one or more embodiments of the present disclosure is to simplify the design of a routing path of an elastic tube. The elastic tube comprises a tube and a coil. The tube has elasticity and flexibility in the axial direction and circumferential direction. A fluid passes through the tube. The coil is wound in a spiral shape around the tube radially outward of the inner circumference of the tube, suppresses widening of the tube, and permits axial-direction expansion and contraction of the tube. An actuator according to the present disclosure comprises said elastic tube, a cylinder, and a third coil. The cylinder is provided at an end of the elastic tube and has elasticity in the axial direction and circumferential direction. The third coil is wound in a spiral shape around the cylinder in a radial direction outwardly of an inner circumference of the cylinder, suppresses widening of the cylinder, and permits expansion and contraction of the cylinder in the axial direction. An end of the cylinder distal from the elastic tube is blocked. The cylinder expands in the axial direction due to a rise in the supply pressure of the fluid passing through the elastic tube into the cylinder, and contracts in the axial direction due to a fall in the supply pressure of the fluid.
Inventors:
KANNO TAKAHIRO (JP)
Application Number:
PCT/JP2022/015482
Publication Date:
October 05, 2023
Filing Date:
March 29, 2022
Export Citation:
Assignee:
RIVERFIELD INC (JP)
International Classes:
F15B15/10
Foreign References:
| JP2019207017A | 2019-12-05 | |||
| JP2007068794A | 2007-03-22 | |||
| JP2018189169A | 2018-11-29 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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