JPH0225031Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mounting structure for a hot water mixer faucet that is attached to a horizontal deck surface of a vanity or bathroom unit, etc., and mixes and discharges hot and cold water, or showers the mixed water. It is.

As is well known, a hot water mixer faucet consists of a water supply faucet connected to the water supply pipe and a hot water supply faucet connected to the hot water supply pipe, which are installed symmetrically in one piece, and the handle on the faucet side and the handle on the hot water faucet side are operated respectively. The degree of mixing of water and hot water is adjusted so that mixed water at an appropriate temperature can be discharged from a spout pipe provided in a mixing pipe connecting a water tap and a hot water tap. Generally, the mixed water discharge line can be switched to the shower hose side by operating a lever provided on the mixing pipe. Some switching valves have not only a switching function but also a water shutoff function. In other words, by operating the switching valve, you can stop the water without having to operate the faucet or hot water tap, and once you have adjusted the hot water/water mixture ratio, you can adjust it every time you use it. At least by using the switching valve to shut off the water, mixed water at an appropriate temperature can always be spouted. However, a hot water mixer faucet that combines a shower switching valve with a water shutoff function like a lever,
In order to prevent water from flowing into the hot water pipes or hot water from flowing into the water pipes due to the difference in water pressure between the hot water supply side and the water supply side when the water is stopped, check valves are installed on each of the water supply faucet and the hot water supply faucet. There is a need.

A check valve is also required to prevent sewage from flowing back into the water pipes during a water outage.

Conventionally, in hot water mixer faucets installed on horizontal deck surfaces such as washstands and bathroom units, the above-mentioned check valve was installed below the deck. For example, if you take a bathroom vanity as an example, the storage space for items becomes small, installation work is difficult due to the narrow space, and it is difficult to replace or repair the hot water mixer faucet and check valve when they break down. There were some shortcomings. Taking a bathroom unit as an example, the opening for maintenance under the deck surface is narrow, making it difficult to install, and in the event of a breakdown, it is difficult to replace or repair. When removed, residual water in the mixer faucet may fall onto the unwatertight floor under the deck, potentially causing water to flood downstairs in condominiums and other housing complexes.

An object of the present invention is to provide a mounting structure for a hot water mixing faucet that can be inspected, repaired, and replaced on a deck, and that can be constructed compactly without requiring space under the deck. In order to achieve this purpose, the present invention penetrates a pair of short pipes with a built-in check valve into the deck, and connects the deck with a flange formed on the outer periphery of the short pipes and a tightening nut screwed onto the short pipes. Connect the water pipe and the hot water supply pipe to the lower end of the short pipe, rotatably attach a cap nut to the inlet of the hot water mixing faucet, and form the cap nut on the outer periphery of the protruding end above the deck surface of the short pipe. It is designed to be screwed into a threaded groove.

Next, an embodiment of the present invention will be described with reference to the drawings.
First, to explain the outline of the structure of this hot water mixer faucet itself, this hot water mixer faucet consists of a 1R water tap and a 1L hot water tap.
2R indicates a handle for opening and closing the water supply faucet 1R, and 2L indicates a handle for opening and closing the hot water supply faucet 1L. Since the hydrant 1R and the hot water tap 1L have the same configuration, only the hydrant side will be explained below.The hydrant 1R has an inlet 3 formed on its lower surface, and is formed on the inner periphery of the lower edge of the inlet 3. A cylindrical connecting fitting 4 is screwed into the threaded groove, and cap nuts 5R and 5L are rotatably mounted by the connecting fitting 4. The cylindrical connecting fitting 4 has a spline formed on its inner periphery 6, and the tool end is engaged with the spline so that it can be easily screwed into the inflow port 3. The flange 7 formed on the end edge is the cap nut 5R,
It holds the 5L so that it can rotate freely without being pulled out. Reference numeral 8 denotes a horizontal mixing pipe section formed on opposing sides of the water supply faucet 1R and the hot water supply faucet 1L, connecting the respective outlet ports, and switching valves 9 and 10 having a water shutoff function are provided in the center of the mixing pipe section 8. It is being That is, the mixing pipe section 8
At the same time, the bonnet 11 is watertightly screwed onto the central front wall of the bonnet, and the spindle 12 is inserted into the bonnet, and the screw groove 13 formed on the outer periphery of the spindle 12 is screwed into the inner periphery of the bonnet 11. At the outward protruding end of the lever 14, attach a screw 15.
The switching valves 9 and 10 are threaded through the inner small diameter portion 16 of the other spindle 12 so as to be able to move forward and backward in the axial direction. 17 is a small nut screwed onto the inner end of the spindle 12 to prevent the switching valve 10 from coming off, and 18 is a flange formed on a part of the spindle 12 to restrict the axial movement of the switching valve 9. be. The switching valves 9 and 10 have bamboo-shaped steps formed on their outer peripheral surfaces, which are connected to metal protective tubes 19 and 2.
The coil spring 21 is interposed in a compressed state with both ends thereof being engaged with the stepped outer peripheral surfaces of the protective tubes 19 and 20. Reference numeral 22 denotes a discharge pipe for discharging mixed water to the front face of the hot water mixing faucet, and the discharge pipe 22 is rotatably attached to the upper surface of the central portion of the mixing pipe portion 8 with a cap nut 23. Further, 24 is a shower hose connecting pipe rotatably attached to the back of the central portion of the mixing pipe portion 8 with a cap nut 25. As shown in the figure, when the lever 14 is positioned upward, the switching valve 9 closes the valve seat 26 communicating with the discharge pipe 22 by the elasticity of the coil spring 21, and the switching valve 10 communicates with the shower hose connection pipe 24. Similarly, the valve seat 27 is closed by the elasticity of the coil spring 21. Then turn the lever 14 to the right and spindle 1
2 is advanced inward, the flange part 18 presses the switching valve 9 and separates the switching valve 9 from the valve seat 26. Therefore, the mixed water in the mixing pipe part 8 is discharged into the discharge pipe 2.
2. On the other hand, when the lever 14 is turned to the left and the spindle 12 is retreated outward, the small nut 17 presses the switching valve 10 to separate the switching valve 10 from the valve seat 27. The mixed water is configured to flow in the direction of the shower hose connection pipe 24 and to obtain a shower-like water spray from a shower water spout (not shown).

Therefore, when installing this hot water mixer faucet on the horizontal deck 28 of a washstand or bathroom unit, a pair of short pipes 30R and 30L with a built-in check valve 29 are placed on the horizontal deck 28 at a predetermined position. Flanges 31R and 31L formed on the outer periphery of the short tubes are passed through at intervals and are brought into contact with the upper surface of the deck 28, and tightening nuts 32R and 32L are screwed onto the short tubes 30R and 30L from the lower surface of the deck 28. Then the deck 2
Grab 8. 33R, 33L, 34R, 34L
is a rubber gasket interposed on the clamping surface.
A four-pronged guide piece 36 is fixed to the check valve 29 by screws 35, and is able to move straight through the short pipes 30R, 30L. 37 is a coil spring that elastically presses the check valve 29 against the valve seat 38 surface, and the other end of the coil spring 37 is connected to a short pipe 30R,
An annular spring seat 39 screwed onto the inner periphery of the upper end of 30L
It is attached to. 40 is a water supply pipe; 41 is a hot water supply pipe; each pipe is inserted from the lower end into short pipes 30R and 30L fixed to the deck 28;
Cap nut 42 screwed onto the lower end of R, 30L
Tighten R and 42L to connect watertightly. A screw groove 43 is formed on the outer periphery of the protruding end on the deck 28 surface of the short pipes 30R, 30L, and the screw groove 43
Cap nuts 5R and 5L, which are rotatably attached to the inlet 3, are screwed onto the inlet 3. 44 indicates a rubber gasket interposed at the joint.

In such a mounting structure, the cap nuts 5R and 5L
If loosened, the check valve 29, coil spring 37, etc. can be inspected from the top of the deck 28, making adjustment and repair very easy. Furthermore, even if the hot water mixer faucet is removed for replacement, only the surface of the deck gets wet, and the remaining water in the hot water mixer faucet does not flow under the deck, so there is no risk of water flooding downstairs.

In addition, by arranging the built-in position of the check valve 29 below the deck surface 28, the amount of overhang of the hot water mixing faucet above the deck surface 28 is reduced, which not only saves space but also improves external accuracy. There are some advantages.

In addition, although the above embodiment describes a hot water mixing faucet in which a switching valve with a water shutoff function is provided in the mixing pipe section, the present invention is applicable not only to this type of hot water mixing faucet but also to a hot water mixing faucet that does not have a water shutoff function. It can be applied to those equipped with a switching valve or a simple hot water mixing faucet without a switching valve, as well as a single lever type hot water mixing faucet and a hot water mixing faucet equipped with a thermostat.

As described above with respect to the embodiments, the hot water mixer faucet mounting structure according to the present invention is advantageous in that it facilitates inspection and repair, and at the same time, it can be configured compactly, allowing effective use of the space under the deck.

[Brief explanation of drawings]

The drawing shows one embodiment of the present invention.
The figure is a partially sectional front view, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 1R...Water tap, 1L...Hot water tap, 3...Inlet, 5R, 5L...Bag nut, 8...Mixing pipe section,
9, 10...Switching valve, 22...Discharge pipe, 24...
Shower hose connection pipe, 28... Deck, 29...
...Check valve, 30R, 30L...Short pipe, 40...Water pipe, 41...Hot water supply pipe, 43...Screw groove.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A hot water mixing faucet with an inlet connected to water pipes and an inlet connected to hot water supply pipes formed on the lower surface, respectively, on a horizontal deck surface of a vanity or bathroom unit, etc. A pair of short pipes with built-in check valves are passed through the deck, and the deck is secured by a flange formed on the outer periphery of the short pipes and a tightening nut screwed onto the short pipes. A water supply pipe and a hot water supply pipe are connected to the lower end of the short pipe, and a cap nut is rotatably attached to each inlet, and the cap nut is attached to the outer periphery of the protruding end above the deck surface of the short pipe. A mounting structure for a hot water mixer faucet, characterized in that it is screwed into a threaded groove. 2. The mounting structure for a hot water mixer faucet according to claim 1 of the utility model registration, characterized in that the built-in position of the check valve is located below the deck surface.