JPH0325079U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a first embodiment of the fluid switching valve of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a rear view thereof, Fig. 4 is a side view thereof, and Fig. 5 is a sectional view of the fluid switching valve of the present invention. FIG. 6 is a rear view of the second embodiment, FIG. 7 is a sectional view taken along the line - - of FIG. 5, FIG. 8 is a sectional view taken along the line - - of FIG. Cross-sectional view showing four-stage switching states W, X, Y, Z of the embodiment, No. 10
The figure shows the switching valve function corresponding to Fig. 9, Fig. 11 shows an installation example of this fluid switching valve, and Fig. 12 shows the function of the switching valve corresponding to Fig. 9.
The figure is a block diagram of the actuator control valve system of the hydraulic excavator, and FIG. 13 is a front view of the hydraulic excavator. A to H...one port group, 1 to 8...other port group, 31...casing, 32...sleeve, 33...rotary shaft, 61...peripheral groove,
64... Radial hole, 65... Axial hole.

Amendment 2.1.25. The scope of claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] (1) A cylindrical sleeve is integrally fitted inside the casing, a rotary shaft is rotatably fitted inside this sleeve, and one port group and one port group are fitted into the casing. the other port group is provided, a plurality of circumferential grooves spaced apart in the axial direction are formed over the entire circumference in at least one of the inner circumferential surface of the casing and the outer circumferential surface of the sleeve; radial and axial holes that selectively communicate between the one port group and the plurality of circumferential grooves depending on the rotation angle are bored, and the other port group communicates with the plurality of circumferential grooves. A fluid switching valve characterized by: (2) The shaft end of the rotary shaft protrudes from a cover plate fixed to the end face of the casing, and a lever is integrally provided in a direction perpendicular to the shaft end of the rotary shaft, and the lever is adapted to be adapted to a plurality of switching positions. 2. The fluid switching valve according to claim 1, wherein a plurality of screw holes are provided in the cover plate, and a screw inserted through the lever is screwed into one of the plurality of screw holes. The brief description of the drawing has been amended as follows. The following sentence is added after "Rotary shaft," on page 16, line 10 of the specification. "35...cover plate, 41...lever, 44...wing bolt as screw, 45W, 45X, 45Y, 45Z
...Screw hole.''

Claims (1)

[Scope of utility model registration request] A cylindrical sleeve is integrally fitted inside the casing, a rotary shaft is rotatably fitted inside the sleeve, and the casing is provided with one port group and the other port group,
A plurality of circumferential grooves arranged at intervals in the axial direction are formed on at least one of the inner circumferential surface of the casing and the outer circumferential surface of the sleeve, and the rotary shaft is provided with a plurality of circumferential grooves that are connected to the one port group. A fluid characterized in that radial and axial holes are bored that selectively communicate with the plurality of circumferential grooves depending on the rotation angle, and the other port group communicates with the plurality of circumferential grooves. switching valve.