JP2555434Y2 - Valve body - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve element used for a small pump mechanism or the like.

[0002]

2. Description of the Related Art Conventionally, there has been a container for accommodating a kneaded material, a creamy material, etc., provided with a small pump mechanism shown in FIG. In this case, the small pump mechanism A is provided at the upper end of a cylindrical container body B having an ascending bottom C, and is operated by pushing down a discharge head D so as to obtain the discharge of contents from the discharge head. I have. Specifically, a movable piston Ac also serving as a discharge valve mounted on the discharge head D is inserted from above into a small cylinder Aa having a suction valve Ab at the lower end, and a plate valve made of rubber or synthetic resin is inserted into the suction valve Ab. The mold valve element Ad is used.
As shown in FIGS. 9 and 10, the plate-type valve element Ad has a circular valve plate 3 disposed inside a planar circular annular base 1 with an appropriate gap 4 therebetween. One elastic piece 2 is interposed between the plate 3 and the annular base 1 so as to be integrally connected, and the annular base 1 is fitted to a lower end portion in the small cylinder Aa,
The valve plate 3 is seated on a valve seat Ae formed at the lower end of the small cylinder Aa.

[0003]

[Problem to be solved by the invention] However, the above valve element Ad
Since the restoring force of the elastic piece 2 is small, if the fluidity of the contents is poor, the valve plate 3 may not be closed smoothly, may be displaced, twisted, etc. after the valve is opened. The mechanism A may be hindered. To prevent this, it is conceivable to increase the width of the elastic piece 2.
However, simply widening the ring base 1 and the valve plate 3
Since the edge of the rim forms an arc, the movement of the elastic piece 2 is restricted, the bending and the like are extremely reduced, and the opening of the valve plate 3 is rather deteriorated. Further, since the annular base 1, the elastic pieces 2 and the valve plate 3 are integrally formed of rubber or synthetic resin, the valve body Ad is deformed carelessly at the time of fitting, so that it can be easily fitted by using a jig. There is a drawback that you can not wear. The present invention seeks to solve these problems.

[0004]

According to the present invention, a plurality of vertical ribs are provided at equal intervals on the inner peripheral surface of an annular base.
12, a valve plate 13 is arranged inside these vertical ribs, and a spiral elastic piece 14 is interposed and connected between the valve plate and each of the vertical ribs 12.

[0005]

When the fitting is performed, a rod-shaped jig P (FIGS. 4 and 6) having a small-diameter distal end portion Pa and a downward stepped portion Pb at the lower end portion is used when fitting the small-diameter distal end portion Pa. Fitted between the vertical ribs 12, the downward stepped portions Pb are brought into contact with the upper surfaces of the respective vertical ribs 12 and the annular base 11, and are inserted into required portions,
Fixing may be performed, and each vertical rib 12 facilitates this fitting. The valve body 10 thus fitted has a valve plate 13 with a valve seat.
Ae is seated and the valve is closed, and the valve plate rises against the elasticity of the vertical rib 12 due to the pressure difference at which the pressure above the valve plate 13 is low,
Open the valve. Thus, an appropriate number of spiral elastic pieces 14 located between each longitudinal rib 12 and the valve plate 13 ensure the positional stability of the valve plate 11 in the horizontal plane and a constant opening / closing posture, Furthermore, the valve plate
13 provides a wide range of movement and a return force that increases in proportion to the distance, ensuring smooth and proper valve opening and closing even if the fluidity of the contents is poor.

[0006]

1 to 7 show an embodiment of the present invention. In the drawing, three vertical ribs 12 project at equal intervals on the inner peripheral surface of the annular base 1 having a circular plan shape, and a planar circular valve plate 13 is arranged inside these longitudinal ribs. A spiral elastic strip is provided between the plate and one common side of each of the longitudinal ribs 12.
14 are interposed and connected, and the entirety is integrally formed of synthetic resin, rubber, or the like as appropriate. The valve element 10 thus formed is used as the suction valve Ab of the small pump mechanism A in the conventional container with a small pump mechanism for accommodating a kneaded material, a cream-like material, and the like, and is connected to the lower end in the small cylinder Aa. Then, the annular base 1 is fixed around the valve seat Ae and the valve plate 13 is seated on the valve seat Ae. With such a configuration, when the ejection head D is in the ejection state in which the ejection head D is depressed, the inside of the small cylinder Aa is in a pressurized state, and the state in which the valve plate 13 is seated on the valve seat Ae is maintained as shown in FIG. The suction valve Ab is in a closed state, but when the discharge head D is in a suction state in which the discharge head D rises, the pressure in the small cylinder Aa becomes negative, and three valve plates 13 are provided as shown in FIGS. Rises against the elastic piece 14, and the valve is opened to allow the contents in the container body B to flow into the small cylinder Aa through the valve hole Af.
The operation of the valve element 10 itself is as described in the section of “Operation”.

[0007]

According to the present invention, a plurality of vertical ribs 12 are provided at equal intervals on the inner peripheral surface of an annular base 11, and a valve plate 13 is arranged inside these vertical ribs. Since the spiral elastic pieces 14 are interposed between the vertical ribs 12 and the vertical ribs 12, the spiral elastic pieces 14 can secure the positional stability and a fixed opening / closing posture of the valve plate 13, and 13 can be given a wide range of movement and an appropriate return force that increases in proportion to the distance, so that smooth and proper valve opening and closing can be obtained even if the fluidity of the contents is poor. Further, even if the entire valve element 10 is formed of a flexible material such as rubber or synthetic resin by the plurality of vertical ribs 12, since the plurality of vertical ribs 12 exist, it is possible to easily and accurately use the rod-shaped jig P. And it is extremely easy to fit. The structure and production are simple and can be provided at low cost, which is extremely useful in practice.

[Brief description of the drawings]

FIG. 1 is a cut-away side view showing an embodiment of a container with a small pump mechanism using the valve body of the present invention.

FIG. 2 is a cutaway perspective view of a main part of the same example in a valve closed state.

FIG. 3 is a cutaway perspective view of a main part of the same example in a valve open state.

FIG. 4 is a perspective view showing a valve body of the same example.

FIG. 5 is a plan view showing the valve body.

FIG. 6 is a longitudinal sectional side view showing the valve body.

FIG. 7 is a partially cutaway perspective view showing a valve-open state of the valve body.

FIG. 8 is a perspective view showing a conventional container with a small pump.

FIG. 9 is a perspective view showing a plate-type valve element of the suction valve of the same example.

FIG. 10 is a plan view showing a plate-type valve element of the suction valve of the same example.

[Explanation of symbols]

 Reference Signs List 1 annular base 2 elastic small piece 3 valve plate 4 gap 10 valve body 11 annular base 12 vertical rib 13 valve plate 14 spiral elastic piece A small pump mechanism Aa small cylinder Ab suction valve Ac movable piston Ad plate valve type valve body Ae valve seat Af Valve hole B Container body C Rising bottom D Discharge head P Rod-shaped jig Pa Small diameter tip Pb Downward step

Claims (1)

(57) [Scope of request for utility model registration] A plurality of vertical ribs are protruded at equal intervals on the inner peripheral surface of an annular base, and a valve plate is arranged inside these vertical ribs. A valve body characterized in that a spiral elastic piece 14 is interposed and connected between them.