JPS62197738U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a dashpot device illustrating an embodiment of the present invention, FIG. 2 is a partial front view showing an example of the opening in FIG. 1, and FIG. 3 is a sectional view of a conventionally known dashpot device. , Figure 4 is A of Figure 3.
It is an enlarged view of the part. 21: Upper casing, 22: Lower casing, 23: Diaphragm, 24: Upper chamber, 25: Lower chamber, 26: Shaft, 27: Upper flange, 2
8: Orifice, 29: Check valve, 30: Bellows seal, 31: Recess, 32: Slit, 33: Spring, 34: Dust filter, 35: Retainer, 36: Step, 37: Dust filter, 38: Step Part 39: Breathing port.

Claims (1)

[Claims for Utility Model Registration] An upper casing, a lower casing, a diaphragm held by the upper casing and the lower casing, an upper chamber partitioned by the diaphragm, the upper casing, and the lower casing; a lower chamber; a shaft provided on the diaphragm and extending toward the lower chamber; an orifice communicating the upper chamber and the lower chamber; A check valve that makes it difficult to separate the lower chamber from the outside air, and at the same time,
a bellows seal through which the end of the shaft passes and allows the shaft to freely move back and forth, the shaft being capable of rapid movement in one direction and slow movement in the opposite direction; What is claimed is: 1. A darts pot mechanism, characterized in that a breathing hole is provided for communicating the lower chamber with outside air, and a dust filter is provided between at least the orifice and the lower chamber.