JP2841824B2 - Single lever type hot water mixer tap - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a single-lever hot-water mixer tap for controlling flow rate, stopping water, and adjusting the temperature of mixed water by operating one lever handle.

(Prior Art) Conventionally, as this type of mixing stopper, a type in which a movable disk and a fixed disk are slidably contacted with each other in a watertight and slidable manner is known.

As shown in FIG. 6, the mixing tap opens a hot water inlet 31, a water inlet (not shown), and a mixed water outlet 32 in a fixed disk 30, and a mixing chamber is provided on a sliding surface of a movable disk 33. 34 is recessed,
Further, the movable disk 33 is configured to be linked so as to slide by the operation of the lever handle 35.

Then, the movable disk 33 is slid back and forth by the tilting operation of the lever handle 35, and the two inflow holes are communicated with or shut off from the mixed water outflow hole 32 through the mixing chamber 34, thereby controlling the flow rate and stopping water. In addition, the movable disk 33 is rotated by a rotation operation, and the temperature of the mixed water is adjusted by changing the ratio of the water passing area of the two inflow holes.

(Problems to be Solved by the Invention) According to the above-described conventional mixing tap, in order to bring the movable disk 33 and the fixed disk 30 into sliding contact with each other in a watertight and slidable manner,
Both discs must be formed of ceramic and their sliding surfaces (seal surfaces) must be mirror-finished. This not only increases the manufacturing cost, but also results in water leakage if either sliding surface is slightly damaged. Was likely to occur.

Further, in order to maintain the water tightness between the two disks by utilizing the surface pressure of each disk and to bring the two disks into close contact with each other against the water pressure of the hot and cold water flowing from the two inflow holes, a presser fitting 36 is provided. Since the movable disk 33 is pressed against the fixed disk 30 by pressing, a large pressing force (seal force) is required to maintain the water tightness, and as a result, the operation for sliding the movable disk 33, that is, the operation of the lever handle 35 There was a problem that the operation became heavy.

The present invention has been made in view of the above-described conventional circumstances, and an object thereof is a mixing tap for controlling flow rate, water stoppage, and temperature by operating one lever handle, and a valve body. It is an object of the present invention to provide a hot and cold water mixing tap which does not need to use a ceramic material or mirror-finish the sealing surface and can maintain watertightness with a small sealing force.

(Means for Solving the Problems) In order to achieve the above object, in the first hot and cold water mixing tap of the present invention, a hot and cold water mixing chamber provided with a hot water inflow hole, a water inflow hole, and a mixed water outflow hole is provided. The main shaft, which slides in the axial direction by the tilting operation of the two lever handles and turns in the circumferential direction by the turning operation, is arranged coaxially with the mixed water outflow hole, and has a hot water side elastic tube communicating with the hot water inflow hole. And a water-side elastic tube communicating with the water inflow hole, the main shaft being interposed between the two tubes, and the main shaft being slid integrally with the main shaft to open and close the mixed water outflow hole. It is characterized in that a valve and a temperature control valve which rotates integrally with the main shaft and crushes the hot water side tube or the water side tube to change the water passage area in the tube are mounted.

In addition, in the second mixing tap of the present invention, in addition to the configuration of the first valve, a flow control valve is provided outside the mixing chamber, and a pressure receiving surface having substantially the same diameter as the mixed water outflow hole is provided on the main shaft. It is characterized by having.

(Operation) According to the first hot and cold water mixing tap, without using a structure in which the two disks are slidably and slidably brought into contact with each other, the elasticity of the tubes on the hot and cold sides is used to reduce the amount of hot and cold water. The temperature of the mixed water is adjusted by changing the temperature, and the flow rate is adjusted and the water is stopped by opening and closing the mixed water outflow hole by sliding the flow adjustment valve. There is no need to mirror-finish the sealing surfaces.

In addition, there is no need to maintain water tightness between the temperature control valve and the tubes on the hot and cold sides, and a sealing force is required to maintain water tightness between the flow control valve and the mixed water outflow hole when water is stopped. Therefore, the sealing surface is greatly reduced as compared with the conventional one in which the entire surface of the sliding contact surface is sealed by the surface pressure of the two disks, and a pressing force (sealing force) for maintaining water tightness. ) Is also reduced, so that the operation of the lever handle can be lightened.

Further, according to the second hot and cold water mixing tap, in addition to the above-described operation, the water pressure of the mixed water in the hot and cold water mixing chamber is applied substantially equally to the flow control valve and the pressure receiving surface, so that the hydraulic pressure applied when the main shaft slides is reduced. Are offset, and the operation of the lever handle can be made lighter.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a single-lever type hot / water mixer tap of the present invention in which the flow rate is controlled, the water is stopped and the temperature of the mixed water is adjusted by operating one lever handle 1. The hot / water mixer tap is divided into two upper and lower stages. The main body a has a hot water mixing chamber 2 on the upper side and a mixed water flow path 3 on the lower side.

A lever handle 1 is tiltably and rotatably mounted on the upper surface of the main body portion a, and hot and cold leg pipes 4a and 4b communicating with the hot and cold mixing chamber 2 are provided on the rear surface. Is connected to a spout 5 communicating with the mixed water flow path 3, and a valve A is provided in the hot and cold water mixing chamber 2.

A hot water inflow hole 6 and a water inflow hole 7 are formed in the back wall 2a of the hot / water mixing chamber 2 in parallel at an appropriate interval, and a bottom wall 2b is formed between the two inflow holes 6,7. The mixed water outflow hole 8 is formed so as to be located at a position 2. Further, an opening 10 through which the main shaft 9 is inserted is formed in the upper wall 2 c coaxially with the mixed water outflow hole 8.
A ridge 8a is integrally provided around an edge of the mixed water outflow hole 8 on the mixed water flow path 3 side.

The valve A has a main shaft 9 disposed coaxially with the opening 10 and the mixed water outflow hole 8 in the hot and cold water mixing chamber 2.
1. Place the water side tube 12 between the tubes 11 and 12
Are arranged side by side so as to be interposed.
And a flow control valve 14 that slides integrally with the main shaft 9.

The main shaft 9 has a large-diameter portion 9a rotatably and slidably fitted into the opening 10 and a small-diameter portion inserted into the mixed water outflow hole 8.
9b and a spline portion connecting the large-diameter portion 9a and the small-diameter portion 9b
9c. Then, the upper end of the large-diameter portion 9a protrudes from the upper surface of the main body portion a and is linked to the lever handle 1 through a known linking means. This allows the slider to slide up and down in the axial direction.

The tubes 11 and 12 on the hot water side and the water side are made of synthetic resin material or rubber material having a desired elasticity, and the front ends thereof are connected to the front end openings 11a and 12a with the base end connected to the hot water inflow hole 6 and the water inflow hole 7. Molded into a length that allows a slight gap in front of the
Numeral 11 is connected to the hot water inflow hole 6, and water side tube 12 is connected to the water inflow hole 7, respectively.

As shown in FIGS. 1, 2, and 5, the temperature control valve 13 is formed in a hemispherical shape having a lower surface as a spherical surface, and a central portion between the lower surface and the bottom wall 2b of the hot and cold water mixing chamber. Recesses 13b are formed at both ends of the hot-water and water-side tubes 11, 12 except for a substantially band-shaped projection 13a that crushes the tubes 11, 12. Further, a spline hole 13c slidably engaged with the spline portion 9c of the main shaft is formed in the center portion. Then, the projection 13a is positioned between the hot and cold tubes 11 and 12, and is arranged to rotate integrally with the main shaft 9. The respective tubes 11, 12 are disposed between the respective recesses 13b and the bottom wall 2b of the hot and cold water mixing chamber in a slightly crushed state.

The flow control valve 14 is formed of a desired synthetic resin or rubber material and has a slightly larger diameter than the mixed water outflow hole 8, and has a main shaft protruding into the mixed water flow passage 3 through the mixed water outflow hole 8. It is attached to the tip of the small diameter portion 9b, and slides integrally with the main shaft 9 to open and close the mixed water outflow hole 8. A seal member 15 is attached to a portion of the flow rate control valve 14 that comes into contact with the ridge 8a of the mixed water outflow hole 8, that is, a seal portion of the mixed water outflow hole 8 when the valve is closed.

The flow control valve 14 is rotatably mounted on the main shaft 9 so as not to rotate together with the main shaft 9 when the mixed water outflow hole 8 is closed, thereby preventing the friction of the seal material 15. .

A pressure receiving surface 16 having substantially the same diameter as the mixed water outflow hole 8 is formed in the large diameter portion 9 a of the main shaft 9, and the water pressure in the hot and cold water mixing chamber 2 applied to the flow rate control valve 14 is formed by the pressure receiving surface 16. The main shaft 9 can be smoothly moved up and down by offsetting each other.

The hot water mixer tap of the present embodiment having the above-described configuration rotates the temperature control valve 13 by rotating the lever handle 1 and crushes the hot or cold tubes 11, 12 with the projection 13a. The mixed water is adjusted to a desired temperature by changing the flow area of each of the tubes 11 and 12, thereby changing the ratio of the amount of hot water and the amount of water flowing into the hot and cold water mixing chamber 2 (FIGS. 3 and 4). reference).

Also, the flow control valve is operated by tilting the lever handle 1.
The mixed water outflow hole 8 is opened and closed by sliding the 14 to adjust the flow rate of the mixed water discharged from the spout 5 through the mixed water flow path 3 and to stop the water flow.

(Effects of the Invention) Since the single-lever hot-water mixer tap of the present invention is configured as described above, the following effects can be obtained.

According to the hot and cold water mixing tap of the first aspect, the elastic tube is crushed by operating the lever handle to control the temperature of the mixed water and the flow control valve is slid to control the flow and stop the water. Compared to using two ceramic discs, the structure is simple and very inexpensive to manufacture, and there is no risk of water leakage due to slight damage to the sealing surface. There is an effect that the operation of the lever handle can be performed more smoothly.

According to the hot water mixing tap of the second aspect, in addition to the above effects, the water pressure in the hot water mixing chamber when the main shaft slides is canceled by the flow control valve and the pressure receiving surface, so that the operation of the lever handle is further smoothed. There is an effect that can be performed.

[Brief description of the drawings]

1 to 5 show an embodiment of the hot and cold water mixing tap of the present invention,
Fig. 1 is a vertical sectional front view of a spouting state in which the water passing areas of a hot water side tube and a water side tube are substantially equalized, Fig. 2 is a sectional view taken along the line (2)-(2) in Fig. 1, and Fig. 3 is FIG. 4 is a vertical sectional front view of a water discharge state in which the hot water side tube is crushed to allow only water flow through the water side tube, FIG. 4 is a sectional view taken along line (4)-(4) in FIG. 3, and FIG. It is a perspective view of. FIG. 6 is a longitudinal sectional side view of a conventional single-lever type hot / water mixer tap. In the figure, 6: hot water inlet, 7: water inlet 8: mixed water outlet, 2: hot / water mixing chamber 1: lever handle, 9: main shaft 11: hot water side tube, 12: water side tube 14: flow rate adjustment Valve, 13: Temperature control valve 16: Pressure receiving surface

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Junji Tanaka 2-8-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Inside the Toga Kikai Co., Ltd. Chigasaki Plant (72) Inventor Yoshinobu Uchimura 2--8, Honmura, Chigasaki-shi, Kanagawa Prefecture No. 1 Inside the Toga Kikai Co., Ltd. Chigasaki Plant (56) References Hikaru 3-127871 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16K 11/14 F16K 7/06

Claims (2)

(57) [Claims] 1. A tilting operation of one lever handle slides in a hot water mixing chamber provided with a hot water inflow hole, a water inflow hole, and a mixed water outflow hole, and is rotated in a circumferential direction by a rotation operation. The main shaft is disposed coaxially with the mixed water outflow hole, and a hot water side elastic tube communicating with the hot water inflow hole and a water side elastic tube communicating with the water inflow hole are provided with the main shaft interposed between the two tubes. The main shaft is provided with a flow control valve that slides integrally with the main shaft to open and close the mixed water outflow hole, and the main shaft is rotated integrally with the main shaft to crush the hot water side tube or the water side tube to crush the inside of the tube. A single-lever hot and cold water tap with a temperature control valve that changes the water passage area. 2. The single-lever hot and cold water mixing system according to claim 1, wherein the flow control valve is provided outside the hot and cold water mixing chamber, and a pressure receiving surface having substantially the same diameter as the mixed water outflow hole is provided on the main shaft. plug.