JPH0612881U - Reed valve - Google Patents

Abstract

(57) [Summary] [Purpose] The structure was designed to prevent damage to the leads made of laminated resin plate material due to peeling damage to the resin plate material. [Structure] A cushioning material (4) made of a material having a lower rigidity than the resin laminated material is coated or laminated on the back side of the lead (3) made of a resin laminated plate, and the impact at the time of sitting acts as a reaction to the back surface. It is prevented from being transmitted to the side to prevent peeling damage of the resin material laminated plate due to impact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, a valve seat surface formed around a flow hole is attached with a reed made of a plate material having elasticity. The pressure difference between the fluid on the back side of the reed and the fluid on the back side of the reed leads the back side to the back side of the reed. The present invention relates to a reed valve used as a means for allowing a fluid flow toward a side and blocking a fluid flow in the opposite direction. More specifically, it relates to a reed valve structure using a resin material laminated plate as a lead material. .

[0002]

[Prior art]

 A reed valve in which a reed made of a metal plate material or a resin material laminated plate having elasticity is attached to a valve seat surface formed around a flow hole is often used on the suction side of a two-cycle internal combustion engine. .

[0003]

[Problems to be solved by the device]

 Among the above-mentioned reed valves, the one using a reed made of a resin laminated plate, the shock due to the vibration caused by repeated opening and closing operations is transmitted to the back side of the reed, and is transferred to the edge of the back laminated plate. Since the cracks are caused to cause peeling of the laminated plate, there is a large possibility that the service life is significantly shortened. Some seats have a rubber-like elastic material coating on the seating side in order to reduce the impact on the back side of the reed, but they have the drawback that they easily stick to the valve seat surface.

[0004]

[Means for solving problems]

 The present invention has been made in consideration of the problem in the reed valve using the above-described conventional resin material laminated plate, in which a cushioning material made of a material having lower rigidity than the resin laminated material is laminated with the resin material. It is provided with a structure in which the back side of the lead made of a plate is coated or laminated. The cushioning material on the back side of the lead is coated or layered over the entire back side opposite to the seating surface of the lead, or is coated or layered in a substantially U-shape on a part of the tip end side of the back side of the lead. Embodiments are used.

[0005]

[Action]

 In the reed valve according to the present invention having the above-mentioned structure, the cushioning material, which is made of a material having low rigidity and is coated or layered on the back side of the lead by the laminated plate made of the resin material, has a shock when seated. As a reaction, it is prevented from being transmitted to the back side to prevent peeling damage of the resin material laminated plate due to impact.

[0006]

【Example】

 The embodiment of FIGS. 1 and 2 is an example of a bungalow type reed valve in which reeds are attached to each of two inclined valve seat surfaces. The lead 3 made of a resin laminated plate which is attached to the valve seat surface 1 formed around the circulation hole 2 and opens and closes the circulation hole 2 is provided on the rear side opposite to the seating side and on the free end side. A buffer material 4 formed in a substantially U-shape is coated with a material having a rigidity lower than that of the layer material.

[0007]

[Effect of device]

 As described above, the reed valve according to the present invention has a structure in which the cushioning material made of a material having a lower rigidity than the resin laminated material is coated or laminated on the back side of the reed made of the resin laminated plate. Since the cushioning material coated or stacked on the back side of the leads prevents the shock at the time of sitting from being transmitted to the back side as a reaction, it prevents peeling damage of the resin material laminated plate due to the shock. The service life is significantly extended.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a view on arrow A in the embodiment of FIG.

[Explanation of symbols]

 1 valve seat surface 2 flow hole 3 lead 4 cushioning material

Claims (1)

[Scope of utility model registration request] 1. A lead (3) made of a resin laminated plate is attached to a valve seat surface (1) surrounding a flow hole (2), and the lead (3) is seated on the valve seat surface (1). A reed valve in which a cushioning material (4) is coated on or overlapped with the back surface on the side opposite to the working side.