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Hydraulic pressure actuator

An actuation device, fluid pressure technology, applied in the direction of fluid pressure actuation device, etc., can solve problems such as inner tube damage

Inactive Publication Date: 2008-01-30
HITACHI MEDICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the technique described in the above-mentioned prior art document 2 has the following problem, that is, since the mold release agent is applied only between the mesh sleeve and the inner tube constituted as described above, there is a possibility that internal The friction between the tube and the mesh sleeve causes damage to the inner tube in a short period of time, and it is necessary to solve the problem of prolonging the life of the fluid-type actuator

Method used

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Embodiment Construction

[0044] Next, an embodiment of a fluid-type actuator that is a specific invention of the present invention will be described with reference to the drawings.

[0045] 1 is a side view showing an expanded state of Embodiment 1 of a fluid-type actuator using air as a fluid according to the present invention, and FIG. 2 is a side view showing a contracted state of the fluid-type actuator of FIG. 1 . In addition, in FIG. 1 , in order to show the internal structure of the pneumatic actuator, parts of the mesh sleeve and the low-friction body are shown by dotted lines.

[0046] In FIGS. 1 and 2 , an air supply and exhaust pipe 2 for supplying and discharging air as a fluid into and out of the inner tube 1 is connected to one end in the longitudinal direction of the inner tube 1 that is an expandable and contractible body. The other end of the inner tube 1 is airtightly sealed by inserting a bush (not shown). An air supply and exhaust device (not shown) composed of a small air compres...

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Abstract

A hydraulic pressure actuator having an inner tube and a mesh sleeve covering the outer periphery of the inner tube and longitudinally extendable by pressure fluid fed into the inner tube, wherein a low friction body formed in an elastic cylindrical body by knitting fine fibers is disposed between the inner tube and the mesh sleeve, and the low friction body contributes to an increase in the life of the hydraulic pressure actuator repeatedly performing extension / retraction motions. <>The hydraulic pressure actuator is used as an actuator for driving a CPM device which supports the extremity of a human body by ay least one of a plurality of members combined with each other and performs the rehabilitation of the joints of a handicapped by operating the member.

Description

[0001] This application is a divisional application of the application number 200480008062.1, the application date is March 12, 2004, and the invention title is "fluid pressure actuating device and continuous passive motion device using the same". technical field [0002] The present invention relates to a fluid pressure actuator driven by supply and discharge of fluid such as air, and a continuous passive motion (Continuous Passive Motion: hereinafter referred to as CPM) device using the same. Background technique [0003] As a fluid pressure type actuator, there is known a fluid pressure type actuator in which the outer circumference of a rubber tube (inner tube) is covered with a net-like covering body (mesh sleeve) made of a non-stretchable resin. device. If the inner tube of the fluid pressure actuator is inflated by supplying air into the inner tube, the diameter of the mesh sleeve increases. The increase of the diameter of the mesh sleeve is due to the fact that the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/10
Inventor 平松万明小浪信佐藤裕松下泰介铃木重计黑田胜广大木一男户田明彦
Owner HITACHI MEDICAL CORP
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