JPS5929183Y2 - Water faucet - Google Patents

Description

[Detailed description of the invention] This invention relates to a so-called water distribution faucet that is attached to a water distribution pipe and diverts water from the water distribution pipe and stops the water by operating a valve. Regarding the type of water faucet.

= There are generally two types of water distribution faucets: ball valve types that use a ball valve (spherical valve) to direct water flow, and cock type types that use a cock (conical valve) to do this. Ball valve type valves have good fit between the valve body and valve seat, making opening and closing operations easy, and have the advantage of being airtight compared to cock type valves, but they do have the disadvantages of being labor-intensive and expensive to process. have

On the other hand, cock-type valves have a rotatable stopper (valve body) housed inside a body with a parallel or tapered valve seat, and are cylindrical and have poor airtightness, but ball valves It is widely used because it has a simpler structure and is easier to manufacture than other types.

However, the valve seat is parallel (i.e. the plug body is cylindrical)
In the case of the cock type, there is a problem in the airtightness between the valve seat surface and the outer surface of the plug body, and there is no good sealing measure for this, so although it has manufacturing advantages, it is hardly used at present.

The cock-type water faucet that is currently widely used is one in which the valve seat and the faucet body are mutually tapered (hereinafter referred to as tapered type), as shown in FIG.

In FIG. 1, 1 is a main body, 11.12 is a discharge pipe part, and 2 is an inflow pipe part.

Reference numeral 3 denotes a stopper whose outer circumferential surface 3A' is tightly fitted to the valve seat surface IA' of the main body 1, and the other end is formed with an operating end 31 that is rotated by a lever (not shown). has been done.

6 is a locking nut, 61 is a locking pin, I is a cap, 81
．． 82 is a gasket, and 83 is an O-ring.

In this tapered type faucet, when the water flowing from the inflow pipe 2 is blocked by the stopper 3, the water-stopping performance between the valve seat I A' and the stopper 3 is determined by the This is achieved by forming the outer circumferential surface 3A' into a tapered shape that rubs against each other.

That is, the valve seat and the stopper are in a state of biting into each other due to the Teno C effect, and their respective peripheral surfaces are brought into close contact with each other, resulting in a good water stopcock.

This relationship holds true even for reverse tapers.

However, with this tapered type, there are manufacturing difficulties in processing the outer surfaces of the valve seat and plug into a tapered shape (it is especially difficult to process the valve seat); There are drawbacks such as the tendency for the plug to become wedged in, and the situation in which the plug cannot be rotated when the plug is rotated.

The present invention was developed in view of the above circumstances, and the taper type of the faucet-type faucet is eliminated, the valve seat and the faucet body are made parallel (cylindrical), and the inlet pipe portion is designed.

Focusing on the contact area between the plug and the plug, the technical challenge is to ensure airtightness (watertightness) in this area.

In order to achieve this technical problem, the present invention adopts the following configuration (technical means).

■A main body with a cylindrical valve seat on its inner surface; ■A plug body that has a cylindrical outer surface that matches the valve seat and slides eight times within the valve seat; ■Orthogonal to the plug body. At the same time, an inflow pipe portion having an inner diameter larger than the valve hole of the corresponding plug body, and C is inserted in close contact with the inner surface of the inflow pipe portion, and the tip surface (upper surface) matches the outer surface of the plug body. A watertight cylindrical sheet with a tapered rear end surface that tapers from the inner surface to the outer surface; A water distribution faucet comprising a cylindrical sheet holder that has a tip surface (upper surface) formed on a tapered surface and is fixed to the inner surface of the inflow pipe, and the sheet is pressed by the sheet holder. .

By adopting such technical measures, even if the contact between the cylindrical valve seat surface and the outer surface of the stopper is not watertight (airtight), the top surface (one end surface) of the seat can be kept in contact with the inflow pipe. The sheet is pressed tightly against the outer surface of the stopper, maintaining watertightness in this contact direction, and the outer surface of the sheet is also in close contact with the inner surface of the inflow pipe, maintaining watertightness on this surface as well. When the valve is closed, fluid from the valve is completely blocked by the stopper.

"!-1, Knee, Sea) is pressed L7 with a moderate pressure by the sheet presser, so the sheet expands appropriately in the radial direction, further enhancing the water-stopping effect of the contacting surface.

The faucet of the present invention has the above-mentioned configuration and functions, and has the following excellent effects.

[F] Since both the valve seat and the plug body are formed in a cylindrical shape, the plug body rotates smoothly and does not become unrotatable, and is easy to process, making it an economical water diversion. A stopper is obtained.

■ The abutting surface between the sheet presser and the sheet is formed into a tapered surface, so by tightening the sheet presser, the sheet is pushed outward and comes into close contact with the inner surface of the inflow pipe, promoting water-stopping action. .

■ Since the tip of the sheet is evenly pressed against the cylindrical plug body in surface contact, the plug body can slide freely in the axial direction within the allowable range, and has good water flow. It can have a sealing effect.

■ The pressure of the sheet against the stopper can be adjusted to an appropriate pressing force using the sheet presser.

Embodiments of the present invention shown in FIGS. 2 to 5 will be described below.

This embodiment has the same structure as the conventional example shown in FIG. 1 except for the structure related to its main parts, so the same reference numerals are given to the members that perform the same functions.

1 is a main body, and a cylindrical valve seat 1A is formed inside the main body.

The main body 1 is provided with an upper discharge pipe section 11 and a discharge pipe 12 for lateral force (in the axial direction of the stopper), but either of them may be omitted as appropriate or a separate discharge pipe section ( If there is enough space in the valve hole of the plug body, a valve hole can be provided.

Note that the upper discharge pipe section 11 can be inserted with a cutting edge (not shown) of a drilling device that reaches the water pipe from this position.
It can also be used for continuous drilling work or normal drilling work.

Reference numeral 13 denotes a housing pipe portion of the stopper, and the inner surface thereof is connected to the valve seat 1A.

Reference numeral 2 denotes an inflow pipe portion forming a part of the main body 1, the inner diameter of which is larger than that of a normal one, and the inflow pipe portion 2
A female thread 2A is cut on the inner surface from the end portion over a required length.

Reference numeral 3 denotes a stopper, the outer surface of which has a cylindrical shape that fits tightly into the valve seat 1A.

The plug body 3 has a valve hole (port) 3a communicating with the upper discharge pipe 11, a valve hole 3b communicating with the lateral force discharge pipe section 12, and a valve hole 3c communicating with the inflow pipe section 2. There is.

The diameter of the valve hole 3c is smaller than the inner diameter of the inflow pipe portion 2.

Note that FIGS. 2 and 3 show the position of the valve hole 313c in the open state, and FIG. 4 shows the valve in the closed state.

Reference numeral 31 represents an operating end of the plug, and reference numeral 32 represents a packing groove.

Reference numeral 4 denotes a cylindrical sheet having an appropriate thickness, and is made of a generally hard material (for example, hard synthetic resin) with some elasticity.

The upper surface (tip surface) 41 of the sheet 4 is formed in a shape that matches the outer surface of the stopper 3, and the outer diameter of the outer surface 42 is substantially equal to the inner diameter of the inflow pipe section 2.

The lower surface (rear end surface) 43 of the seat 4 is formed into a tapered surface (conical surface) that becomes tapered as the inner surface 44 reaches the outer surface 42 .

Since the upper surface 41 of the seat 4 comes into sliding contact with the plug body 3 and constitutes a so-called valve seat, this surface is required to have at least lubricity and wear resistance.

Therefore, by constructing the sheet 4 with tetrabutylated ethylene resin or polyacetal resin, this requirement can be satisfied and appropriate elasticity can be obtained.

Reference numeral 5 denotes a sheet presser, which is fixed within the fluid pipe section 2 and serves to press the sheet 4.

The sheet presser 5 is made of a hard material (for example, metal), and its upper surface (tip surface) 51 is formed into a tapered surface (conical surface) that matches the lower surface 43 of the seed 4.

The outer surface 52 of the sheet presser 5 is substantially equal to the inner diameter of the inflow pipe section 2, and a male thread 52A is formed over the entire surface or lower half of the outer surface 52, and a female thread 52A is formed on the inner surface of the inflow pipe section 2.
Screwed into people.

A cutout recess 53a is provided in the lower surface (rear end surface) 53 of the sheet presser 5 in the diametrical direction, and a rotation jig (for example, a spanner) is locked in the cutout recess 531, so that the sheet presser 50 can be rotated. Served.

The inner diameter of the inner surface 54 of the seat holder is made equal to the inner diameter of the seat 14 and also to the diameter of the valve hole 3c of the valve body 3.

If the sheet presser 5 is rotated, the upper surface 51 of the sheet presser 5
comes into contact with the lower surface 43 of the sheet 4 and presses the sheet 4, and the upper surface 41 of the sheet comes into close contact with the outer surface 3A of the stopper 3, keeping this surface airtight.

Since the abutting surfaces between the folded sheet presser 5 and the sheet 4 are formed into tapered surfaces, tightening the sheet presser causes the sheet to be expanded outward and come into close contact with the inner surface of the inflow pipe section 2, thereby stopping water. The effect is promoted.

Further, since the sheet presser 5 and the inflow pipe portion 2 are fixed with screws, it is possible to finely adjust the force applied to the sheet 4 by the sheet presser.

6 is the locking nut of the mold, 61 is the valve hole (port) of the plug body 3
This is a stop pin that determines the position and restricts rotation.

I is a camp attached to the upper discharge pipe section 11.

(Used when drilling into a water pipe has been completed and the pipe is not used for water diversion).

81 is a gasket for sealing the cap 7 and the discharge pipe part 11; 83 is a gasket attached to the gasket groove 32 of the plug body 3;
This is an O-ring that seals the inner surface of the plug and the stopper.

[Brief explanation of the drawing]

Figure 1 is a vertical side view showing a conventional faucet type water faucet;
Figures 2 to 5 show the water distribution faucet of the present invention, Figure 2 is a vertical side view thereof, Figure 3 is a cross-sectional view of the valve in the open state taken along line X-X in Figure 2, and Figure 4 is a cross-sectional view of the valve in the open state. The figure is a cross-sectional view of the valve in the closed state.
The figure is a perspective view of the stopper, the sheet, and the sheet presser. 1...Body, 1A...Valve seat, 2...
...Inflow pipe section, 3...Plug body, 3A...
・Outer surface, 3C... Valve hole, 4... Seat, 5... Seat holder.

Claims (1)

[Scope of utility model registration request] 1. a main body 1 having a cylindrical valve seat 1A on its inner surface; a plug 3 having a cylindrical outer surface 3A matching the valve seat 1A and rotating and sliding within the valve seat 1A; 3 and the corresponding valve hole 3 of the plug body.
an inflow pipe section 2 having an inner diameter larger than C;
A watertight cylindrical sheet 4 is formed in a shape that matches the outer surface 3A of the plug body 3, and has a rear end 43 formed in a tapered surface that tapers from the inner surface to the outer surface. , a cylindrical sheet presser 5 having a tip end surface 51 formed as a tapered surface that abuts against the rear end surface 43 of the sheet 4 and fixed to the inner surface of the inflow pipe section 2; 5. A water distribution faucet characterized by being formed by pressing the sheet 4 with a force 5. 2. The sheet presser 5 is fixed using two female screws provided on the inner surface of the inflow pipe section 2 and a male screw 52 provided on the outer surface 52 of the sheet presser.
A: A water faucet according to claim 1 of the utility model registration claim.