Pump

Abstract

In a pump having suction and exhaust valves formed of read valves, provided is a technique, wherein a compression ratio can be improved by reducing the dead space in a pump chamber and the reduction of the number of required parts and the simplification of assembling process can be achieved. A concave suction valve pressing part (52) is provided to the exhaust side surface (50a) of the main body part (50) of a plate (5) provided to the upper portion of a pump chamber (2), wherein the suction valve pressing part (52) is inclined towards a suction hole (51) such that the thickness of the suction valve pressing part (52) becomes thin and the suction valve pressing part (52) is formed to be connected to the suction hole (51). A suction and exhaust valve member (6) is provided to the plate (5) and has a plane plate-shaped main body part (60) positioned and arranged in contact with an exhaust side, wherein a suction valve (62) integrally formed in the main body part (60) of the suction and exhaust valve member (6) is formed to overlap the suction hole (51) and the suction valve pressing part (52) of the plate (5).

Description

technical field [0001] The present invention relates to pumps having reed valves (valve constructed from cantilevered beams), and more particularly to the construction of the spool boot for limiting the amount of lift of the valve. Background technique [0002] Conventionally, as a pump having a reed valve, there is known a pump in which the movement of the intake and exhaust valves is suppressed by a pressing member in order to improve durability and reduce noise by limiting the lift of the valve. [0003] Figure 10 It is an exploded perspective view showing the structure of main parts of a conventional pump 101, Figure 11 (a), Figure 11 (b) is a sectional view showing a valve structure of a conventional pump, Figure 11 (a) is the case where the piston part is at the top dead center position, Figure 11 (b) is a case where the piston part is at the bottom dead center position. [0004] like Figure 10 As shown, in such a pump 101 , for example, a pump chamber 102 is...

AI Technical Summary

Problems solved by technology

[0009] In the prior art having such a structure, an air intake valve 111 and an air intake valve pressing part 112 are provided on the suction side part of the top panel 105, such as Figure 11 As shown in (a), in order to avoid contact between the piston part 103 and the suction valve holding member 112 when the piston part 103 is at the top dead center, the top plate 105 is spot-faced, and the suction valve 111 and the suction valve holding member are arranged. 112, and use screws 113 to fasten the suction valve 111, so the top plate 105 becomes thicker, and there is an extra space for the exhaust port 120, so there is an extra space (useless space) in the pump chamber 102, and it is difficult to increase the pressure. scaling problem

[0010] Moreover, in the prior art, since the suction valve pressing member 112, the exhaust valve pressing member 122, and the screws 113, 123 are required respectively, the number of parts is large, and the assembly process is complicated due to screw fastening and the like. , so there is a problem that causes the cost to increase

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