JP3712216B2 - Hot and cold water faucet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot and cold water mixing faucet provided with a faucet mounting foot.
[0002]
[Prior art]
An example of a conventional hot and cold water mixing faucet is shown in FIG. This hot and cold water mixing faucet has a mixed hot water discharge port (a shower tap or the like is connected thereto, but not shown) formed on the side surface and a hot water and water supply pipe 51 on the bottom surface. , 51 is connected to a faucet mounting foot 55 inserted through and fixed to a through-hole 54 provided in a peripheral face plate 53 such as a wash bowl, and a hot water mixing chamber A is formed. On the other hand, a valve unit 57 for adjusting hot water (mixing ratio and flow rate of hot water) is incorporated in the hot water mixing chamber A, and a lever handle 58 is connected to the movable valve body of the valve unit 57. Become.
[0003]
[Problems to be solved by the invention]
In the hot and cold water mixing faucet having such a configuration, check valves 59 and 59 are provided in the supply pipes 51 and 51, respectively, in order to prevent the backflow of the mixed hot water from the hot water mixing chamber A to the supply pipes 51 and 51 side. However, in order to avoid the mutual interference and provide the check valves 59, 59 in the supply pipes 51, 51, the supply pipes 51, 51 have to be eccentric from each other.
[0004]
Further, since the check valves 59 and 59 are close to each other or close to the supply pipes 51 and 51 and are stored in a lower space of a peripheral face plate such as a wash bowl, the check valve 59 can be replaced. Maintenance work was difficult.
[0005]
The present invention provides a hot and cold water mixing faucet that eliminates the need for eccentricity of the supply pipe by a rationally improved technique and that facilitates maintenance work for the check valve.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention forms a hot water mixing chamber by connecting a faucet mounting foot to the lower side of the faucet body in which a mixed hot water discharge port is formed on the side surface. In a hot and cold water mixing faucet that has a valve unit for adjusting hot and cold water that is operated by a handle in a hot and cold water mixing chamber, a supply flow path that connects a hot water and a water supply pipe to a fixed valve seat flow path of the valve unit; On the upper side of the supply flow path, a receiving portion for the check valve and the leg portion of the hot water communication attachment, and a female screw hole on the lower side are formed by cutting in the faucet mounting foot, while a hot water mixing chamber The check valve and the hot water communication attachment for preventing the backflow of mixed hot water from the supply pipe to the supply pipe side are fitted in that order from the valve seat side to each of the accommodating portions of the supply flow path. It is characterized by connecting water supply pipes.
[0007]
In other words, taking advantage of the relatively large diameter of the faucet mounting foot, a supply flow path is formed here, and a part of the flow path is used as a valve case, and the valve case is non-returned. The valve is fitted from the valve seat side.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
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 tap 1 is connected, and FIG.
In these drawings, 3 is a faucet body that forms a mixing chamber A for hot water and water. For example, a faucet mounting foot 6 fixed to a through hole 5 provided on a peripheral face plate 4 of a wash bowl, It comprises a faucet body 8 containing a mixing valve unit 7.
[0009]
As shown in FIG. 3, the hot water mixing valve unit 7 includes a lower disk 9 in which hot water and water introduction holes a, a and mixed hot water outlet holes b are formed, and the holes a, a, b described above. Cylindrical packings 10a, 10a, 10b fitted into the valve, a fixed valve seat 11 in which valve seat channels c, c and a hot water outlet channel d are formed, and a movable valve body (long hole) that can rotate and slide freely. e) is formed of a movable disk 12 and a support member 13.) 14 and a disk guide 15 are housed in a cylindrical unit case 16 in that order and are pivotally attached to the disk guide 15. A lever handle 18 for adjusting hot water (see FIG. 1) 18 is connected to the upper end of 17, and the upper shoulder of the unit case 16 is engaged with the notch 8 a of the faucet body 8. An alignment protrusion 16a is provided.
[0010]
As is apparent with reference to 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. A female screw portion f for screwing a male screw ring (see FIG. 3) 19 for fixing the valve unit is formed on the inner surface of the inner surface, and the lower side is bulged to form an inner surface on the upper side thereof. And forming a female screw portion h for screwing the faucet mounting foot 6, and further bulging the discharge port portion 20 of the mixed hot water on the side surface portion and forming a male screw portion i on the outer surface thereof, The hose 21 to which the shower plug 1 is connected is screwed to the discharge port portion 20 by a nut 22.
[0011]
On the other hand, the faucet mounting foot 6 is made of, for example, copper or brass, and has an annular groove m that fits and holds the male thread portion j screwed to the female thread portion h of the faucet body 8 and the O-ring 23. A male threaded portion n that is inserted into the peripheral through-surface plate 4 through the established through-hole 5 and fixed by a female threaded member 24, and hot water and water supply pipes 25, 25 are connected to the valve seat channel c of the valve unit 7, The two supply passages 26, 26 communicated with c are formed by cutting, and the supply passages 26, 26 are provided on the upper side (valve seat side) from the hot water mixing chamber A to the supply pipe 25, 25, a check valve 27 for preventing the back flow of mixed hot water and a leg portion of the hot water communication attachment 28 from the valve unit 9 side in that order are formed. A female screw hole 26 b for connecting a supply pipe is formed on the lower side of the pipe 26.
[0012]
The above-described check valve 27 uses the housing portion 26a of the supply flow channel 26 as a valve case. As shown in FIG. 5, the O-ring 30 is provided on the outer surface of the lower side (flow channel upstream) of the cylindrical case 29. An insertion groove 31 is formed, and a tapered valve seat 32 is formed on the lower inner surface of the cylindrical case 29, while a guide arm 35 and a valve shaft 36 are provided on a valve body holder 34 having an O-ring 33 as a valve body. A cylindrical member 39 that is provided continuously and includes a holding body 37 of the valve shaft 36 via a plurality of arms 38 is fitted and held on the upper side of the cylindrical case 29, and the cylindrical member 39 and the valve A spring 40 is provided between the body holder 34 and the O-ring 33 which is the valve body toward the tapered valve seat 32 side.
[0013]
The connection structure of the hot water and water supply pipes 25, 25 to the faucet body 3 is as follows. That is, the supply pipes 25, 25 are made of, for example, copper pipes, and the outer peripheral flange 41 is formed at the connection end portion thereof, while the female screw holes 26 b formed on the lower side of the supply flow paths 26, 26 of the faucet mounting foot 6. , 26b are sized so that the outer peripheral flange 41 can be inserted from below, and a cylindrical male screw member 42 having an outer surface of a different diameter such as a hexagonal shape is provided in each of the supply pipes 25, 25, and an O-ring shape. The male screw member 42 is screwed into the female screw hole 26 b of the faucet mounting foot 6.
[0014]
According to the hot and cold water mixing faucet 2 configured as described above, the mixed hot water from the supply pipes 25 and 25 is supplied to the supply passages 26 and 26 of the faucet mounting foot 6 and the hot water and water introduction holes r and r of the attachments 28 and 28. And the cylindrical packings 10a and 10a and the valve seat passages c and c, and mixed in the long hole e of the movable disk 12, and the mixed hot water is supplied to the hot water outlet passage d of the fixed valve seat 11 and the cylinder. Through the cylindrical packing 10 b and the hot water outlet hole t formed between the attachments 28, 28, and the hot water is led out to the hot water mixing chamber A around the unit case 16. It is led out from the shower tap 1 through a hose 21 connected to the.
[0015]
The hot / cold water mixing ratio is adjusted by adjusting the opening ratio of the valve seat flow paths c and c communicating with the elongated hole d of the movable disk 12 by rotating the movable valve element 14 with the lever handle 18. The flow rate adjustment of the mixed hot water including is performed by adjusting the opening degree of the valve seat flow paths c and c communicated with the long hole d by the sliding operation of the movable valve body 14 by the lever handle 18.
[0016]
【The invention's effect】
The present invention is implemented in the form as described above, of the mixing valve, by utilizing the faucet mounting foot is relatively large diameter, in the faucet mounting leg, a check valve on the valve seat side And a supply passage with a female thread on the upstream side of the flow path, and a flow path wall as a valve case. By fitting the check valve and the hot water communication attachment in that order and configuring the hot water / water mixing faucet as a built-in check valve type, compared to installing the check valve outside the faucet, In addition, there is no need to decenter the water supply pipe, and the maintenance work can be easily performed in a wide space as well as the check valve is assembled.
Moreover, since the faucet mounting foot is subjected to various cutting processes, if a supply flow path is formed at the same time during 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 the drawings]
FIG. 1 is a longitudinal side view of a hot and cold water mixing tap connected with a shower tap.
FIG. 2 is a front view of a hot-water / water-mixing faucet with a main part broken away.
FIG. 3 is an exploded perspective view of the valve unit.
FIG. 4 is an exploded cross-sectional view showing a connection structure of a faucet body, faucet attachment legs, 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 check valve is provided in a supply pipe and a part of the conventional example is broken.
[Explanation of symbols]
6 ... faucet mounting foot, 7 ... valve unit, 8 ... faucet body, 20 ... discharge port, 25 ... supply pipe, 26 ... supply flow path, 27 ... check valve, A ... hot water mixing chamber, c ... fixed Valve seat flow path.

Claims (1)

A faucet mounting foot is connected to the lower side of the faucet fuselage, which has a mixed hot water discharge port formed on the side surface to form a hot water mixing chamber, and a hot water adjustment valve unit operated by a handle is mixed with hot water. In the hot and cold water mixing faucet built in the chamber, a supply flow path for connecting the hot water and water supply pipes to the fixed valve seat flow path of the valve unit, and a check valve on the upper side of the supply flow path, The storage part for the leg part of the hot water communication attachment and the female screw hole on the lower side are formed by cutting the faucet mounting foot, while preventing the back flow of the mixed hot water from the hot water mixing chamber to the supply pipe side. and said check valve and hot water communicating Spoken attachment in this order, wherein each of the housing portion of the supply channel fitted from the valve seat side, the female screw formed by connecting the supply pipe for the hot water and for water Hot water and water mixing faucet.

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