JPH0932934A - Valve body for faucet - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a resin valve body for a faucet having a good sense of deadline and excellent durability. A valve body (11) has a mounting shaft portion (12) and a flange-shaped receiving portion (13) pressed by an end surface (10) of a spindle (2).
And a closing surface portion 14 that is thinner than the receiving portion 13 so as to bend with appropriate elasticity when closing the valve seat 3a, are integrally formed of a resin material, and the receiving portion 13 is formed when the valve is closed. By abutting the closing surface portion 14 and regulating the amount of deformation thereof, the user is given a clear feeling of deadline, and excessive deformation of the closing surface portion 14 is prevented. Further, a spacer having elasticity may be selectively interposed between the receiving portion 13 and the closing surface portion 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve body for a water faucet which connects and disconnects a flow path by means of a valve opening / closing mechanism, and more particularly to a body formed of resin.

[0002]

2. Description of the Related Art A conventional valve structure of a water faucet is schematically shown in FIG. The spindle 2 can be moved back and forth with respect to the valve seat 3a by rotating the valve opening / closing mechanism 1. The valve body 4 includes a mounting shaft portion 5 that is inserted into the spindle 2 and a flange-shaped closing surface portion 6 that is provided orthogonal to the mounting shaft portion 5.
It is basically composed of. Then, a threaded portion 7 is provided on the closing surface portion 6, and a rubber-based packing 8 having appropriate elasticity and suitable for closing the valve seat 3 a is fitted therein, and the packing 8 is held by a nut 9. ing. When the valve opening / closing mechanism 1 is operated, the end surface 10 of the spindle 2 presses the closing surface portion 6 and the packing 8 is pressed against the valve seat 3a,
The valve hole 3 is closed and the flow path is closed.

The applicant of the present invention has proposed a resin valve body which can obtain a sufficient sealing property without rubber packing, instead of the conventional valve body described above (Japanese Patent Application No. 7-8059).
No. 8). According to the present invention, the closing surface portion is elastically pressed against the valve seat while being elastically pressed to secure better sealing property, and the rubber packing which is easily deteriorated by heat is eliminated to improve the durability of the valve body. To do. However, there is a desire to further improve the feeling from the semi-stoppage state (the state where the closed surface is in contact with the valve seat but the water leaks due to water pressure) to the complete stoppage (hereinafter referred to as the "deadline"). There is. Also, since it is different from the repulsive force like conventional rubber packing, we want to prevent the durability of the valve body from being impaired even when the valve is closed and the water is completely stopped and the user tightens more than necessary. There is a request.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a valve body for a faucet, which has an improved resin valve body in which rubber-based packing is abolished and which has a good sense of deadline and excellent durability. To do.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a mounting shaft portion which is inserted and held in a spindle which is movable forward and backward with respect to a valve seat, and a closing surface portion for closing the valve seat which is provided at an end of the mounting shaft portion. In a valve body for a faucet, which is made of resin and whose closing surface portion is elastically pressed against a valve seat, the mounting shaft portion has a receiving portion that is pressed by the end surface of the spindle. The amount of deformation of the closing surface portion is regulated when the faucet is shut off.

Therefore, when the faucet is shut off, the amount of deformation of the closing surface is regulated by the receiving portion, so that the user can feel a clear deadline, and the user over-tightens the faucet more than necessary. There is no. Since the receiving portion is pressed by the end surface of the spindle from the side opposite to the closing surface portion, the rigidity of the receiving portion itself may be somewhat low.

Further, in order to obtain a similar feeling of tightness due to the rubber-based packing which has been widely used in conventional faucets, a space between the receiving portion and the closing surface portion is parallel to the thickness direction (that is, parallel to the axis of the mounting shaft portion). You may make it interpose the spacer which can exhibit elasticity in the (direction). A rubber ring body can be used as such a spacer. Unlike the rubber type packing in the conventional valve body, this rubber ring body has a small exposed portion exposed to water, and the valve seat 3
Since it is not necessary to consider the sealing property with a, it is easy to use a material having good heat resistance, and there is almost no concern about thermal deterioration. Further, in place of the rubber ring body, as the spacer, a metal ring body capable of exerting elasticity between the receiving portion and the closing surface portion such as a coil spring shape, a disc spring shape, a wire mesh spring, or a ring spring may be used. it can. In this case, an open cross section that opens outwards or inwards, for example,
It is more preferable to use a metal ring body having an open cross section of U-shape, C-shape, and lateral U-shape.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to FIGS. It should be noted that parts and portions common to the conventional example or the respective embodiments are designated by the same reference numerals, and overlapping description will be omitted.

First Embodiment; FIGS. 1 and 2 show a first embodiment. In the valve body 11, a mounting shaft portion 12 inserted into the spindle 2, a receiving portion 13 pressed against the end surface 10 of the spindle 2, and a closing surface portion 14 that closes the valve seat 3a are integrally formed of a resin material. Has been done. The receiving portion 13 is provided in a flange shape in the middle of the mounting shaft portion 12, and is formed thicker than the closing surface portion 14 so as to receive the pressing force of the spindle 2. The closing surface portion 14 is formed thinner than the receiving portion 13 so as to bend with appropriate elasticity when the valve is closed,
It is separated from the receiving portion 13 by an interval A. Also, the closed surface part 1
An annular projecting portion 15 is erected downward at the peripheral edge portion of 4.

When the spindle 2 descends, its end face 10
Pushes down the receiving portion 13, and the tip of the cylindrical portion 15 is the valve seat 3
It comes into contact with a and is in a semi-static state. When the spindle 2 further descends, the closing surface portion 14 is deformed by the distance A, and the valve seat a is elastically closed while shifting to the complete water stop state. FIG.
As described above, when the closing surface portion 14 comes into contact with the receiving portion 13, the closing surface portion 14 is not deformed any more, so that the user can feel a clear deadline.

Second Embodiment: FIG. 3 shows a second embodiment. The valve body 16 includes a mounting shaft portion 17 and a closing surface portion 1.
8 are separately molded with a resin material. Mounting shaft 1
An insertion hole 19 is provided at the lower end portion of 7 and a receiving portion 20 corresponding to the receiving portion 13 is provided. Closure surface 18
In the figure, a bottomed inner tubular portion 21 that opens upward and a bottomed outer tubular portion 22 that opens downward are combined.
A shaft portion 23 that is inserted into the insertion hole 19 is erected upward in the bottomed inner cylindrical portion 21, and the closing surface portion 18 is combined with the mounting shaft portion 17 at a distance A from the receiving portion 20.

By lowering the spindle 2, the bottomed outer cylinder 2
The distal end of 2 comes into contact with the valve seat 3a and the closing surface portion 20 elastically deforms in the same manner as described above, but by combining the bottomed inner cylindrical portion 21 and the bottomed outer cylindrical portion 22, the closing surface portion 20 is more flexible than the closing surface portion 15. Then, the valve seat 3a is closed. The parts other than the above and how to use them are the same as those in the first embodiment, and the description thereof will be omitted.

Third Embodiment; FIG. 4 shows a third embodiment. The valve body 24 includes a receiving portion 13 and a closing surface portion 14.
A spacer 25 composed of a rubber ring body having an elasticity value close to that of a rubber-based packing which is conventionally used for faucets is interposed between the spacer 25 and As a result, the receiving portion 13 is pressed against the end surface 10 of the spindle 2 and the spacer 25 is elastically deformed. Therefore, immediately after the closing surface portion 14 contacts the valve seat 3a, the conventional valve body with rubber packing is used. While giving the user a feeling of tightness closer to the faucet, the state of complete water stoppage is entered, and finally, the amount of deformation of the closing surface portion 14 is regulated by the receiving portion 13.

The spacer 25 may be fitted between the receiving portion 13 and the closing surface portion 14 by temporarily expanding the diameter by utilizing its elasticity, but the spacer 25a is shown in FIG.
As shown by, a notch 26 is provided so that it can be mounted at a predetermined position from here. In addition, as shown in FIG.
You may fit 3 in order as a separate body. Further, so-called double molding (or two-color molding), that is, the spacer 2 is prepared by first injecting a rubber material to a predetermined position of a molding die in advance.
After curing and forming 5, the core mold is removed, and then the valve body 24
It is preferable to form the entire resin material by a secondary injection method. For parts other than the above and how to use them, please refer to Sections 1-2.
The description is omitted because it is the same as the embodiment.

The spacer 25 is not limited to the one having a rectangular cross section. For example, a spacer having a circular cross section like the spacer 27 shown in FIG. 7, or an elliptical cross section or a polygonal cross section, which is not shown, can be appropriately modified.

Fourth Embodiment; FIG. 8 shows a fourth embodiment. In this example, instead of the spacer 25, a spacer 28 formed of a metal ring body is interposed between the mounting shaft portion 13 and the closing surface portion 14. The spacer 28 includes an upper surface ring 29 that contacts the receiving portion 13, a lower surface ring 30 that contacts the closing surface portion 14, an upper surface ring 29, and a lower surface ring 3.
And a peripheral wall portion 31 that elastically connects 0. That is, the spacer 28 includes the upper surface ring 29 and the lower surface ring 30.
The peripheral wall portion 31 and the peripheral wall portion 31 form an open cross-section (U-shaped cross-section) that opens outward, forming a rotating body (that is, a bobbin shape) that is rotated about the axis of the mounting shaft portion 12. There is.

As a result, when the receiving portion 13 is pressed against the end surface 10 of the spindle 2 and the closing surface portion 14 comes into contact with the valve seat 3a, the upper surface ring 29 and the lower surface ring 30 are bent so as to come close to each other, and the conventional water faucet is formed. The elasticity of the used rubber-based packing 8 is exerted in the thickness direction of the spacer 28 (that is, the vertical direction in the drawing), and the user is provided with a shutoff feeling similar to that of a conventional water faucet, while shifting to a complete water-stop state. Finally, the receiving portion 13 regulates the deformation amount of the closing surface portion 14. The spacer 28 is the above-mentioned spacer 25a.
The valve body 24 may be combined with the valve body 24 by forming a notch as described above or by forming the receiving portion 13 as a separate body, but after so-called insert molding, that is, the spacer 28 is assembled at a predetermined position of the molding die, the entire valve body 24 is formed. It is preferable to inject and form the resin material.

The sectional shape of the spacer 28 is not limited to the U-shape. For example, it is possible to use a C-shape like the spacer 31 of FIG. 9, and a U-shape, or an oval shape with a part open, a polygonal shape, or the like having an appropriate open cross-sectional shape, which is not shown. Further, in the above illustration,
Although the opening direction of the open cross section is described as the outward direction, it may be the inward direction (that is, the mounting shaft portion 12 side). In this case, the above-mentioned method by insert molding is difficult to use, and therefore it may be combined with the notch or the receiving portion 13 as a separate body. The parts other than the above and how to use them are the same as those in the first to third embodiments, and the description thereof will be omitted.

[0019]

As described above, according to the present invention, since the receiving portion provided on the mounting shaft portion is configured to regulate the deformation amount of the closing surface portion when closing the faucet, when the closing of the faucet is performed. In addition, the user can be given a clear and comfortable feeling of deadline, and higher sealing performance with the valve seat can be expected. Further, since the faucet is not tightened excessively, the durability of the valve body is improved.

[Brief description of drawings]

FIG. 1 is a partial sectional side view showing a first embodiment of a valve body for a water faucet according to the present invention.

FIG. 2 is a partial cross-sectional side view showing a state when the valve is closed.

FIG. 3 is a partial cross-sectional side view showing a second embodiment.

FIG. 4 is a partial cross-sectional side view showing a third embodiment.

5 is a perspective view showing an example of a spacer used in the valve body of FIG.

6 is an exploded cross-sectional view showing a case where the receiving portion of the valve body of FIG. 4 is formed separately and combined.

7 is a partial cross-sectional side view showing a case where a spacer having another shape is combined with the valve body of FIG.

FIG. 8 is a partial cross-sectional side view showing a fourth embodiment.

9 is a partial cross-sectional side view showing a case where a spacer having another shape is combined with the valve body of FIG.

FIG. 10 is a side view in which a part of a valve structure is shown for explaining a conventional valve body for a water faucet.

[Explanation of symbols]

 1 valve opening / closing mechanism 2 spindle 3 valve hole 3a valve seat 8 packing 10 spindle end face 11, 16, 24 valve body 12, 17 mounting shaft portion 13, 20 receiving portion 14, 18 closing surface portion 25, 25a, 27 spacer (made of rubber Ring body) 28, 31 Spacer (Metal ring body)

Claims (4)

[Claims] 1. A mounting shaft portion, which is inserted and held in a spindle that is movable back and forth with respect to a valve seat, and a closing surface portion for closing the valve seat, which is provided at an end of the mounting shaft portion, is made of resin, and the closing surface portion is In a valve body for a faucet that is elastically pressed against a valve seat, the mounting shaft part has a receiving part that is pressed by the end face of the spindle, and this receiving part deforms the closing surface part when the faucet is shut off. A valve body for a faucet characterized by regulating the amount. 2. The valve body for a water faucet according to claim 1, wherein a spacer having elasticity at least in a thickness direction is interposed between the receiving portion and the closing surface portion. 3. The valve body for a water faucet according to claim 2, wherein the spacer is a rubber ring body. 4. The valve body for a faucet according to claim 2, wherein the spacer is a metal ring body having an open cross section that is open outward or inward.