JPH09280403A - Mixing valves for water combination faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform assembling work and maintenance work for a check valve for preventing the back flow of combination of hot water and cold water from a hot water and cold water mixing chamber to hot water and cold water supplying pipes in a wide space. SOLUTION: A hot water and cold water mixing chamber A is formed by connecting a cast iron-made tap attaching leg 6 to the lower part side of a faucet body 8 provided with a discharging port part 20 for combination of hot water and cold water a valve unit for adjusting hot water, to be handle- operated is housed in the hot water and cold water mixing chamber A, supplying passages 26, 26 for communicating hot water and cold water supplying pipes 25, 25 with fixed valve seat passages of the valve unit are formed on the attaching leg 6, and check valves 27 for preventing back flow of combination of hot water and cold water from the chamber A to the sides of the supplying pipes 25, 25 are fitted to respective supplying passages 26, 26 from the valve seat side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing faucet having a faucet mounting foot.

[0002]

2. Description of the Related Art An example of a conventional hot and cold water mixing faucet is shown in FIG. This hot and cold water mixing faucet is provided with a hot water and hot water supply pipe 51 at the bottom surface portion, in which a side surface portion is formed with a mixed hot and cold water outlet (a shower plug or the like is connected, but not shown). , 51 are connected to a faucet mounting foot 55 that is fixed by being inserted into a through hole 54 formed in a peripheral surface plate 53 such as a wash bowl, to form a hot and cold water mixing chamber A. On the other hand, a valve unit 57 for adjusting hot water (mixing ratio of hot water and flow rate) is built in the hot and cold water mixing chamber A, and a lever handle 58 is connected to a movable valve body of the valve unit 57. Become.

[0003]

In the hot and cold water mixing faucet having such a structure, in order to prevent backflow of the mixed hot and cold water from the hot and cold water mixing chamber A to the supply pipes 51, 51 side,
The check valves 59, 59 are provided in each of the above. However, in order to avoid the mutual interference and to provide the check valves 59, 59 in the supply pipes 51, 51, it is necessary to decenter the supply pipes 51, 51 from each other. It was

Further, since the check valves 59, 59 are close to each other or close to the supply pipes 51, 51, and are accommodated in the space below the peripheral face plate such as a wash ball, the check valves 59, 59 are not provided. Maintenance work such as replacement was difficult.

[0005]

SUMMARY OF THE INVENTION The present invention eliminates the need for eccentricity of the supply pipe by reasonably improved technology.
In addition, the hot and cold water mixing faucet is provided to facilitate the maintenance work on the check valve.

[0006]

In order to achieve the above object, the present invention is to connect a faucet mounting foot to a lower side of a faucet body having a side surface portion where a mixed hot water outlet is formed. In a hot and cold water mixing faucet that forms a mixing chamber and has a handle-operated hot and cold water adjusting valve unit built into the hot and cold water mixing chamber, the hot and cold water supply pipes are used as fixed valve seat passages of the valve unit. While forming a supply flow path communicating with the faucet mounting foot, a check valve for preventing reverse flow of the mixed hot water from the hot water mixing chamber to the supply pipe side is fitted to each of the supply flow paths from the valve seat side. The feature is that it is complicated.

That is, by making good use of the fact that the faucet mounting foot has a relatively large diameter, a supply flow path is formed here, and a part of the flow path is used as a valve case. The check valve is fitted in from the valve seat side.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a hot and cold water mixing faucet 2 to which a shower faucet 1 is connected, and FIG. 2 shows a hot and cold water mixing faucet 2 in which a main part is broken. In these drawings, 3 in the drawings is a faucet body forming a hot and cold water mixing chamber A, for example, a faucet mounting foot 6 fixed to a through hole 5 formed in a peripheral surface plate 4 of a wash bowl, and a hot and cold water It comprises a faucet body 8 containing a mixing valve unit 7.

As shown in FIG. 3, the valve unit 7 for mixing hot and cold water has a lower disk 9 in which hot water and water introducing holes a and a and mixed hot and cold water discharging hole b are formed, and the above holes a and a.
Cylindrical packings 10a, 10a, 10 fitted in a and b
b, the fixed valve seat 11 in which the valve seat flow paths c and c and the hot and cold water discharge flow path d are formed, the movable valve body that is rotatable and slidable (the movable disk 12 in which the elongated hole e is formed, and the support member). Thirteen
Consisting of ) 14 and a disc guide 15 in that order in a cylindrical unit case 16, and an upper end of a lever 17 pivotally attached to the disc guide 15 has
A lever handle (see FIG. 1) 18 for hot and cold water adjustment is connected, and an upper shoulder of the unit case 16 is
A protrusion 16a for positioning that is engaged with the notch 8a of the faucet body 8 is provided.

As is apparent from FIGS. 1 and 2 together with FIG. 4, the faucet body 8 is formed by processing a metal pipe material such as copper or brass, and the upper side of the metal pipe material is narrowed down. At the inner surface, an internal thread portion f for screwing a male thread ring (see FIG. 3) 19 for fixing the valve unit is formed, and at the lower side, this is bulged to form an upper portion thereof. A female screw portion h for screwing the faucet mounting foot 6 is formed on the inner surface of the side, and further, a discharge port portion 20 of the mixed hot water is bulged on the side surface portion and a male screw portion i is formed on the outer surface thereof. And the hose 21 to which the shower tap 1 is connected,
The nut 22 is screwed onto the discharge port 20.

On the other hand, the faucet mounting leg 6 is made of, for example, cast copper or brass, and has an O-ring 23 fitted and held with a male screw part j screwed to the female screw part h of the faucet body 8. The annular groove m, the male screw portion n which is inserted into the through hole 5 formed in the peripheral face plate 4 and fixed by the female screw member 24, and the hot water and water supply pipes 25, 25 are connected to the valve seat flow of the valve unit 7. Road c,
The two supply channels 26, 26 communicating with c are formed by cutting, and the upper side of the supply channels 26, 26 is
A check valve 27 for preventing the reverse flow of the mixed hot water from the hot water mixing chamber A to the supply pipes 25, 25, and the attachment 2 for hot water communication.
The leg portion of 8 is formed with a housing portion 26a into which the valve unit 9 side is fitted in that order, and female screw holes 26b for connecting a supply pipe are formed on the lower side of the supply flow paths 26, 26. .

The check valve 27 uses the accommodating portion 26a of the supply passage 26 as a valve case, and as shown in FIG.
A fitting groove 31 of an O-ring 30 is formed on the outer surface of the lower side (flow path upstream side) of the tubular case 29, and a taper valve seat 32 is formed on the inner surface of the lower side of the tubular case 29, while an O-ring 33 is formed.
To the valve body holder 34 including
5 and the valve shaft 36 are connected to each other, and a holder 37 for the valve shaft 36 is provided.
A tubular member 39 provided with a plurality of arms 38 is fitted and held on the upper side of the tubular case 29, and the valve body is provided between the tubular member 39 and the valve body holder 34. A spring 40 for urging a certain O-ring 33 toward the taper valve seat 32 is provided.

The structure for connecting the hot water and water supply pipes 25 to the faucet body 3 is as follows. That is, the supply pipes 25, 25 are made of, for example, a copper pipe, and the outer peripheral flange 41 is formed at the connection end portion thereof, while the female screw hole 26b formed at the lower side of the supply passages 26, 26 of the faucet mounting foot 6. , 26b have such a size that the outer peripheral flange 41 can be inserted from below, and the supply pipes 25, 25 each have a cylindrical male screw member 42 having an outer surface with a different diameter such as a hexagon, and an O-ring shape. With the elastic packing 43, the male screw member 42 is screwed into the female screw hole 26b of the faucet mounting foot 6.

According to the hot and cold water mixing faucet 2 having the above configuration, the hot and cold water mixed from the supply pipes 25 and 25 is supplied to the water supply passages 26 and 26 of the faucet mounting foot 6 and the attachments 28 and 28 and the water introducing holes. r, r, the cylindrical packings 10a, 10a, and the valve seat passages c, c, are mixed in the elongated hole e of the movable disk 12, and the mixed hot and cold water is the hot and cold water discharge passage d of the fixed valve seat 11. And tubular packing 10b and attachment 2
The hose 21 that is led out to the hot and cold water mixing chamber A around the unit case 16 through the hot and cold water discharge hole t formed between the No. 8 and 28, and that this hot and cold water is connected to the discharge port portion 20 of the faucet body 3. Through the shower plug 1 via.

The lever handle 18 is used to adjust the mixing ratio of hot and cold water.
Is performed by adjusting the opening ratio of the valve seat flow paths c, c communicating with the elongated hole d of the movable disk 12 by the rotating operation of the movable valve body 14 by the lever. This is performed by adjusting the opening degree of the valve seat flow paths c, c communicating with the elongated hole d by the sliding operation of the movable valve body 14 by the handle 18.

[0016]

The present invention is embodied in the form as described above, and utilizes the faucet mounting foot having a relatively large diameter among the hot and cold water mixing faucets, and the feed passage is provided to the faucet mounting foot. The valve wall is formed into a valve case, and the check valve is fitted into the valve case from the valve seat channel side, and the hot and cold water mixing faucet is configured as a built-in check valve. Compared with mounting the outside of the faucet, there is no need to eccentric the supply pipes for hot water and water, and in addition to mounting the check valve, maintenance work can be performed easily in a wide space. Moreover, since various cutting processes are performed on the faucet mounting foot, if a supply flow path is formed at the same time as the cutting process, the check valve is built in the hot and cold water mixing faucet with almost no cost increase. be able to.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a hot and cold water mixing faucet to which a shower stopper is connected.

FIG. 2 is a front view of a hot and cold water mixing faucet with a main part broken away.

FIG. 3 is an exploded perspective view of a valve unit.

FIG. 4 is an exploded cross-sectional view showing a connection structure of a faucet body, a faucet mounting foot, and a supply pipe.

FIG. 5 is a detailed cross-sectional view of a check valve.

FIG. 6 is a front view of a hot and cold water mixing faucet in which a part of a conventional example in which a check valve is provided in a supply pipe is cut away.

[Explanation of symbols]

6 ... Faucet mounting foot, 7 ... Valve unit, 8 ... Faucet body, 20
... Discharge port portion, 25 ... Supply pipe, 26 ... Supply passage, 27 ... Check valve, A ... Hot / water mixing chamber, c ... Fixed valve seat passage.

Claims (1)

[Claims] 1. A hot water mixing chamber is formed by connecting a water faucet mounting foot to a lower portion of a faucet body having a side surface portion where a mixed hot water discharge port is formed, and at the same time, a handle is operated to adjust hot water. In a hot and cold water mixing faucet in which a valve unit is built in a hot and cold water mixing chamber, a supply flow path for communicating hot water and water supply pipes with a fixed valve seat flow path of the valve unit is formed in the faucet mounting foot. On the other hand, a hot and cold water mixing faucet characterized in that a check valve for preventing the reverse flow of the mixed hot water from the hot water mixing chamber to the supply pipe side is fitted into each of the supply passages from the valve seat side.