JPH0434475U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a partially cross-sectional explanatory diagram showing an embodiment of the present invention according to the first aspect, FIG. 1a is a plan view of a sheet 1A constituting a check valve, and FIG. 1b is a FIG. 1c, a plan view of the seat 1B used as a preferred embodiment, is a sectional view of a check valve as a preferred embodiment. FIG. 2 is a partially cross-sectional explanatory diagram showing an embodiment of the present invention according to the second gist;
FIG. 1a is a plan view of the seat 2A, FIG. 1b is a plan view of the seat 2B, and FIG. 1c is a sectional view of the check valve composed of the seats 2A and 2B. FIG. 3 is a partially cross-sectional explanatory diagram showing an embodiment of the present invention according to the third aspect, and FIG. 1a is a sheet 3A.
FIG. 1b is a plan view of the seat 3B, and FIG. 1c is a sectional view of the check valve composed of the seats 3A and 3B. FIG. 4 is an explanatory view showing an example of the manufacturing steps of a piezoelectric pump using the check valve of the present invention, and FIG. 5 is an explanatory view in partial cross section of the manufactured piezoelectric pump. In the figure, 10 is a check valve, 20 is a spacer, 30 is a piezoelectric element, 40 and 50 are flow path sections, 60 is a mold housing, 70 is a pump chamber, A is a two-part mold, and B is a flow path section. It is a forming mold.

Claims (1)

[Claims for Utility Model Registration] (1) From two sheets 1A having a variable part 2 that can be bent up and down by a peripheral notch 1 and a through hole 3 with a small diameter that cannot enter the variable part. The variable parts 2 and through holes 3 of each sheet are stacked and fixed so as to overlap each other, each through hole 3 constitutes a valve seat, and each variable part 2 constitutes a valve body that opens in different directions. A check valve for a pump characterized by: (2) In claim 1, two through holes 4,
5, and at least one of the through holes 4 has a large hole diameter that allows entry into the variable part 2.
are laminated and fixed on the top and bottom of the pump check valve, and the sheet 1B and the pump check valve are such that the through hole 4 overlaps with the variable part 2 of the open valve body, and the through hole 5 overlaps with the through hole 3. The check valve for a pump according to claim 1, characterized in that the check valve for a pump is formed by stacking and fixing them so as to overlap each other. (3) A sheet 2A having two variable parts 2 that can be bent up and down by a surrounding notch 1, a through hole 4 with a large diameter that can enter the variable part 2, and a small hole that cannot enter the variable part 2. Consisting of two sheets 2B having through-holes 5 of death,
A check valve for a pump, characterized in that each through hole 5 having a small diameter constitutes a valve seat, and each variable part 2 constitutes a valve body that opens in different directions. (4) A sheet 3A having a variable portion 2 that can be bent up and down by a peripheral notch 1, and a through hole 3;
Two small diameter through holes 5 that cannot enter the variable part 2
Sheet 3B consists of two sheets 3B having
The variable portion 2 and the through hole 3 of each sheet 3A are stacked and fixed so as to face each other and overlap with each other with the through hole 5 in between, and the through hole 5 of each small diameter constitutes a valve seat. A check valve for a pump, characterized in that the valve body is configured to open in different directions.