Title:
Multi port rotary joint
Document Type and Number:
Japanese Patent JP6093234
Kind Code:
B2
Abstract:
A multi-port rotary joint is provided which allows for reduction in sliding friction between a first sealing ring 15 and a second sealing ring 25 in a mechanical seal. Each of sleeves 11a to 11d provided by being fitted on a shaft main body 10 has a plurality of through holes 12 formed therein so as to be spaced apart from each other at equal intervals in a circumferential direction. First sealing rings 15a to 15e provided by being fitted on the shaft main body 10 alternately with the sleeves 11a to 11d have annular side faces 16 that contact with end faces of the sleeves 11a to 11d. The sleeves 11a to 11d and the first sealing rings 15a to 15e are rotatable with the shaft main body 10 by being pressed in an axial direction. The sleeves 11a and 11b are located such that a position of each through hole 12 of the sleeve 11a at one side among the sleeves 11a and 11b at both sides of the first sealing ring 15b in the axial direction and a middle position m2 in the circumferential direction between the through holes 12, 12 adjacent to each other in the circumferential direction in the sleeve 11b at the other side thereamong coincide with each other in the circumferential direction.
Inventors:
Fukumoto Takato
Takeshi Yamanoi
Takaki Kikuyama
Takeshi Yamanoi
Takaki Kikuyama
Application Number:
JP2013096507A
Publication Date:
March 08, 2017
Filing Date:
May 01, 2013
Export Citation:
Assignee:
Nippon Pillar Industry Co., Ltd.
International Classes:
F16L27/08; F16J15/34; F16L27/087; F16L39/06
Domestic Patent References:
| JP2012097761A | ||||
| JP2001141150A | ||||
| JP63041689B2 | ||||
| JP2006161954A |
Foreign References:
| WO2004067970A1 | ||||
| US5044673 |
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office
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