Title:
フロアヒンジ
Document Type and Number:
Japanese Patent JP6913608
Kind Code:
B2
Abstract:
To clearly switch between a DA section and a first-speed section.SOLUTION: A control mechanism unit of a floor hinge 10 is provided with: a first-speed flow path 42 and a DA flow path 43 that connect a second oil chamber 12b to a first oil chamber 12a to distribute hydraulic oil; a hold open start valve 41 that is provided so as to be contacted with/separated from a piston member 19 and that controls the distribution of the hydraulic oil from the second oil chamber 12b to the first-speed flow path 42 and the DA flow path 43; a hold open release valve 44 that is provided between the second oil chamber 12b and the first-speed flow path 42 so as to permit or stop the distribution of the hydraulic oil from the second oil chamber 12b to the first-speed flow path 42; and a DA oil leakage prevention valve 46 that is provided in a connection flow path 45 for connecting the DA flow path 43 and the first-speed flow path 42 so as to normally stop the distribution of the hydraulic oil through the connection flow path 45 and to permit the distribution of the hydraulic oil from the DA flow path 43 through the connection flow path 45 to the first-speed flow path 42 when inner pressure of the hydraulic oil becomes equal to or higher than a prescribed level in the DA flow path 43.SELECTED DRAWING: Figure 1
Inventors:
Yuya Inoue
Application Number:
JP2017212934A
Publication Date:
August 04, 2021
Filing Date:
November 02, 2017
Export Citation:
Assignee:
Ryobi Co., Ltd.
International Classes:
E05F3/12; E05F3/20
Domestic Patent References:
| JP56003777A | ||||
| JP50054140A | ||||
| JP3020680U | ||||
| JP2010019053A | ||||
| JP2009215804A |