JPS637293U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the operating state of a check valve showing an embodiment of this invention in a vane compressor;
FIG. 2 is a sectional view showing the non-operating state of the check valve, and FIG. 3 is a longitudinal sectional view showing an example of a vane compressor.
FIG. 4 is a sectional view taken along the line AA in FIG. 3, FIGS. 5 and 6 are sectional views showing other examples of this invention, and FIG. 7 is a sectional view showing a conventional example. Front housing…5, step surface…5d, 23
c, Suction chamber...6, Suction flange...7, Seal ring...21, Check valve...22, Mounting case...23, Large diameter part...23a, Small diameter part...23b, Engagement convex part...23
e, valve storage case...24, engagement recess...24a, valve body...25, spring...26.

Claims (1)

[Claims for Utility Model Registration] 1. A suction flange is connected and fixed to a housing forming a suction chamber, and a step surface is provided in the middle of an engagement hole provided in the housing corresponding to the suction flange, and the step surface The outer stepped surface of a cylindrical mounting case having a large diameter part and a small diameter part is locked to the mounting case, and a valve storage case having a bottomed cylindrical shape is fitted to the outer periphery of the small diameter part of the mounting case, and the outer periphery providing an engagement recess and an engagement convex portion whose surfaces contact the inner circumferential surface of the engagement hole and prevent relative movement in the axial direction with respect to the outer circumferential surface of the small diameter portion and the inner circumferential surface of the valve storage case; A check valve for a rotary compressor, in which a valve body which is normally biased to a closed position by a spring is housed in the valve housing case. 2. The suction flange is press-fitted into the fitting hole of the housing, and a seal ring is provided between the inner circumferential surface of the engaging hole that is connected to the fitting hole via a stepped surface and the outer circumferential surface of the small diameter portion of the suction flange. Utility model registration claim 1, in which a stepped surface formed on the inside of the mounting case is locked to the inner end surface of the small diameter portion of the suction flange.
A check valve for a rotary compressor as described in . 3. The check valve for a rotary compressor according to claim 1 or 2, wherein either one of the mounting case and the valve storage case is made of an elastic material such as resin.