JPH0296083U

JPH0296083U -

Info

Publication number: JPH0296083U
Application number: JP391889U
Authority: JP
Priority date: 1989-01-19
Filing date: 1989-01-19
Publication date: 1990-07-31
Anticipated expiration: 2004-01-19
Also published as: JPH0716944Y2

Description

[Brief explanation of drawings]

第１図は第１実施例による流路切換装置の縦断
面図、第２図は第１図の他の状態の縦断面図、第
３図は第１図の流路切換装置を使用した油圧装置
の回路図、第４図は第３図の他の状態の回路図、
第５図は第２実施例による流路切換装置の縦断面
図、第６図は第５図の他の状態の縦断面図、第７
図は第５図の流路切換装置を使用した油圧装置の
回路図、第８図は第７図の他の状態の回路図、第
９図は第３実施例による流路切換装置の縦断面図
、第１０図は第９図の他の状態の縦断面図、第１
１図は第９図の流路切換装置を使用した油圧装置
の回路図、第１２図は第１１図の他の状態の回路
図、第１３図は第９図の流路切換装置を使用した
他の油圧装置の回路図、第１４図は第１３図の他
の状態の回路図である。第１５図は従来例による
流路切換装置の縦断面図、第１６図は第１５図の
流路切換装置のシール形状を示す図である。図において、７は外筒、９は内筒、８１，８２
，８３，８４及び８５はシール溝及びシール材で
ある。 Fig. 1 is a longitudinal sectional view of the flow path switching device according to the first embodiment, Fig. 2 is a longitudinal sectional view of another state of Fig. 1, and Fig. 3 is a hydraulic pressure using the flow path switching device of Fig. 1. A circuit diagram of the device, Fig. 4 is a circuit diagram of another state of Fig. 3,
FIG. 5 is a longitudinal sectional view of the flow path switching device according to the second embodiment, FIG. 6 is a longitudinal sectional view of another state of FIG. 5, and FIG.
The figure is a circuit diagram of a hydraulic system using the flow path switching device shown in FIG. 5, FIG. 8 is a circuit diagram in a different state from FIG. 7, and FIG. 9 is a longitudinal section of the flow path switching device according to the third embodiment. Figure 10 is a vertical sectional view of another state of Figure 9, and Figure 1
Figure 1 is a circuit diagram of a hydraulic system using the flow switching device shown in Figure 9, Figure 12 is a circuit diagram of a different state from Figure 11, and Figure 13 is a circuit diagram using the flow switching device shown in Figure 9. A circuit diagram of another hydraulic system, FIG. 14 is a circuit diagram of a state other than that of FIG. 13. FIG. 15 is a longitudinal sectional view of a conventional flow path switching device, and FIG. 16 is a diagram showing a seal shape of the flow path switching device of FIG. 15. In the figure, 7 is an outer cylinder, 9 is an inner cylinder, 81, 82
, 83, 84 and 85 are seal grooves and seal materials.

Claims

[Scope of utility model registration request]

In a flow path switching device that switches the flow path by switching the connection between the flow path between the outer cylinder and the inner cylinder, which open on the cylindrical peripheral surface, by rotating the inner cylinder whose cylindrical peripheral surface is in sliding contact with the outer cylinder, there is no connection. A sash-like or circumferential sealing groove is cut into the outer circumferential surface of the inner cylinder or the inner circumferential surface of the outer cylinder so as to extend endlessly around the circumferential surface of the cylinder where the outer cylinder and the inner cylinder are in sliding contact so as to isolate the flow paths. A flow path switching device characterized in that a sealing material is fitted into these seal grooves.