KR20040015646A - cool-hot water mixing tap with automatic shut-off device - Google Patents

Abstract

PURPOSE: A self-closing mixer faucet is provided to easily regulate the mixing ratio of cold and hot water by rotating a valve unit with an operating button and to simplify the composition of the valve unit. CONSTITUTION: A self-closing mixer faucet includes a valve unit mounted to a valve unit mounting space of a faucet body to regulate the mixing ratio of the cold and hot water. The valve unit is composed of a cold-hot water switching sleeve(22), a piston(24), an operating rod, and an operating button. The sleeve rotatively installed to the valve mounting space includes a cut groove(22b) at the lower part, cold/hot water inlet grooves(22c,22d) at the upper part, and an orifice groove(22a) longitudinally formed at the inside. The hollow piston installed to ascend and descend in the cold-hot water switching sleeve has a first packing(24a) disposed to the upper and lower parts of the outside to keep airtightness with the inside of the cold-hot water switching sleeve, and a direction switching key(24c) formed to a cap(24b) and inserted into the cut groove. The operating rod is elastically supported by a spring in the piston, protruded upward, and rotated with the piston by inserting a spline engaged with a spline in the piston into the lower-end. The operating button is arranged to the upper end of the operating rod penetrated and extended through the upper part of the faucet body, and is elastically mounted with a spring for returning to an original position.

Description

Autistic cold-hot water mixing faucet {cool-hot water mixing tap with automatic shut-off device}

The present invention relates to an autistic cold-hot water mixing faucet, and more particularly, to an autistic cold-hot water mixing faucet which is capable of mixing cold water and hot water and is locked after a certain time by pressing and releasing an operation button.

In general, the self-closing faucet is automatically shut off after a certain period of time when water is continuously discharged while pressing the operation button to save water resources, and the external force applied to the operation button is removed.

Among the autistic faucets, the faucet that uses a combination of cold and hot water is a hot water and cold water discharge path on the lower surface of the piston cylinder combined with the lower end of the knob, as described in Korean Utility Model Publication No. 20-0255256. The depth of the symmetrical shape is gradually changed so that the mixing ratio between the hot water and the cold water can be adjusted according to the rotational direction of the knob. The piston is installed inside the piston cylinder, which is raised by hydraulic pressure to block the discharge port. -Prevent the discharge of cold water and press the knob to push down the push spindle at the bottom of the knob to open the piston valve installed in the center of the piston to release the operating water that pushed the piston upward while the piston rises to open the discharge port to discharge the mixed water State and the hydraulic As clamped in the lower block the discharge port by the piston is gradually increased by the pressure was to be automatically cut off.

In the registered utility model publication configured as described above, there are many and complicated components of the configuration for adjusting the mixing ratio between hot water and cold water, and being opened and closed by piston cylinders, pistons, push spindles, piston valves, and return springs. Due to the complex organic coupling of the parts also has a problem that the manufacturing is difficult and the unit price is increased.

An object of the present invention has been researched and developed in order to solve the above-mentioned conventional problems, by providing a cold-hot water switching sleeve in the faucet body and by providing a turning key derived outward from the piston of the valve unit therein The valve unit can be rotated together with the operation button to easily control the mixing ratio between cold water and hot water, and the configuration of the valve unit is extremely simple to provide an autistic cold-hot water mixing faucet that is easy to manufacture.

1 is a perspective view showing a autistic cold-hot water mixing faucet according to the present invention,

Figure 2 is a cross-sectional view of the autistic cold-hot water mixing faucet according to the present invention,

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along line B-B of FIG. 2;

5 is a perspective view showing an extract of the hot-hot water switching sleeve and the piston which is an essential part of the present invention;

Figure 6 is a cross-sectional view showing a coupling portion of the piston and the operating rod which is the main part of the present invention.

<Explanation of symbols for main parts of drawing>

10: faucet body 11a: cold water inlet hole

11b: hot water inlet 12a, 12b: chamber

13: Valve unit installation space 20: Valve unit

22: cold-hot water switching sleeve 22a: orifice groove

22b: cutting groove 22c: cold water inlet groove

22d: hot water inlet groove 24: piston

24a: first packing 24b: cap

24c: turn key 24d, 26a: spline

26: operating rod 29: operating button

Autistic cold-hot water mixing faucet of the present invention for achieving the object as described above, the faucet body having a chamber in communication with the cold water and hot water inlet hole is formed on each side and the valve unit installation space at the intersection of the chamber; In the valve unit installation space of the faucet body, the self-closing cold-hot water mixing faucet provided with a valve unit for adjusting the mixing ratio of cold water and hot water, the valve unit is rotatably installed in the valve installation space A cold-hot water conversion sleeve having a cutting groove formed therein and having a cold / hot water inflow groove formed therein and an orifice groove formed in the longitudinal direction on the inner surface thereof; It is installed up and down in this cold-hot water switching sleeve, and a packing is installed in the upper and lower parts of the outer surface of the cold-hot water switching sleeve for airtightness, and the turning key is inserted into the cut-out groove at the bottom cap. Piston; An actuating rod projecting upward in a state of being elastically supported by a spring in the piston and fitted at a lower end thereof with a spline engaged with a spline on an inner surface of the piston and rotatably installed with the piston; It is characterized in that the operating button is provided with a spring elastically installed to return to the original position on the top of the operating rod extending through the faucet body.

Hereinafter, the autistic cold-hot water mixing faucet of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a autistic cold-hot water mixing faucet according to the present invention, FIGS. 2 to 4 are cross-sectional views of the autistic cold-hot water mixing faucet according to the present invention, and FIG. 5 is a main part of the present invention. It is a perspective view showing an extract of the cold-hot water sleeve and the piston, Figure 6 is a cross-sectional view showing a coupling portion of the piston and the operating rod which is an essential part of the present invention.

As shown in the figure, the faucet body 10 has chambers 12a and 12b communicating with cold water and hot water inflow holes 11a and 11b on both sides thereof, and valves are provided at the intersections of the chambers 12a and 12b. A unit installation space 13 is formed, flow paths 15a and 15b are formed in a partition wall between the chambers 12a and 12b and the valve unit installation space 13, and an upper surface of the valve unit installation space 13 is formed. A valve seat 16 through which the mixed water is discharged is formed, and a discharge tube 17 through which the hop pool water passing through the valve seat 16 is extended in the upper part of the faucet body 10.

The valve unit installation space 13 is provided with a valve unit 20 that can adjust the mixing ratio of cold water and hot water, the valve unit 20 is switched to cold water and hot water and the cold-hot water switching sleeve for mixing them ( 22, a piston 24 which rises and falls in this cold-hot water switching sleeve 22, and an operating rod 26 which lowers the piston 24.

The cold-hot water switching sleeve 22 of the valve unit 20 is formed in a pipe shape that is rotated in a state where airtightness is maintained in the valve installation space 13 of the faucet body 10, and an orifice groove in the longitudinal direction on the inner surface thereof. 22a is formed, the cutting groove 22b is formed in the lower part, and the cold / hot water inflow grooves 22c and 22d are formed in the upper part.

The piston 24 is installed up and down in the cold-hot water conversion sleeve 22 and formed of a hollow cap-shaped cross section, but maintains airtightness with the inner surface of the cold-hot water conversion sleeve 22 at the upper and lower portions of the outer surface. The first packing 24a is installed and the cap 24b fastened to the lower end is provided with a turning key 24c fitted into the cut groove 22b of the cold / hot water switching sleeve 22. Moreover, 24 d of splines are formed in the upper surface of the said piston 24. As shown in FIG.

The actuating rod 26 is installed to protrude upward while being elastically supported by the spring 24e in the piston 24, and the spline of the inner surface of the piston 24 to be rotatable with the piston 24 on the lower outer surface thereof. The spline 26a which meshes with 24d is formed, and the 2nd packing 26b for airtight keeping with the piston 24 is provided in the upper part of this spline 24d.

The actuating rod 26 includes a bush 27 and a third packing in a state where the piston 24 is seated and installed together with the cold-hot water switching sleeve 22 in the valve unit installation space 13 in the faucet body 10. It extends through the faucet body 10 to prevent leakage by the 28, the operating button 29 is mounted on the operating rod 26, and between the bush 27 and the operating button 29 A spring 30 is elastically installed to return the working rod 26 to its original position.

The bottom of the valve unit installation space 13 is formed with a rotary limiting projection 14 protrudes, the lower end of the cold-hot water switching sleeve 22 is a cold-hot water switching sleeve 22 by the rotary limiting projection (14) 22f is formed so that it may rotate in 45 degrees. The rotation limiting projection 14 and the stepped portion 22f are for selecting cold water and hot water as the cold-hot water conversion sleeve 22 is rotated in the valve unit installation space 13, and for adjusting the mixing ratio.

Autism type cold-hot water mixing faucet according to the present invention configured as described above is the cold water and hot water inlet (11a, 11b) of the faucet body 10 when the cold water pipe and hot water pipe ends, respectively, cold water through the cold / hot water pipe And hot water flows into the chambers 12a and 12b in the faucet body 10, which is partitioned. At this time, the flow path (15a, 15b) formed on the wall between the chamber (12a, 12b) and the valve unit installation space 13 by the piston 24 in the cold-hot water switching sleeve 22 forming the valve unit 20 It is sealed and blocked.

When the operation button 29 is rotated in this state, the spline 26a under the operating rod 26 and the spline 24d on the inner surface of the piston 24 are engaged with each other so that the piston 24 also rotates and the piston 24 Since the turning key 24c formed in the cap 24b at the bottom is accommodated by the cutting groove 22b of the cold-hot water switching sleeve 22, the cold-hot water switching sleeve 22 is also rotated interlockedly. Accordingly, the flow paths 15a and 15b formed on the wall between the chambers 12a and 12b and the valve unit installation space 13 are partially or cold / hot water inlet grooves 22c and 22d at the upper end of the cold-hot water conversion sleeve 22. The whole is matched or either side is closed and blocked.

In this state, when the operation button 29 is pressed, the piston 24 begins to descend after the spring 24e in the piston 24 is pressed, and thus the piston 24 opens as the piston 24 descends, thereby opening the cold water in the chambers 12a and 12b. And / or the hot water flows in through the cold / hot water inflow grooves 22c and 22d of the cold-hot water conversion sleeve 22, and then the valve seat 16 and the faucet body 10 on the upper portion of the valve unit installation space 13. Is discharged through the discharge pipe 17.

As such, when the force (external force) applied to the operation button 29 is removed while cold water and / or hot water is discharged, the spring 24e inside the piston 24 and the spring 30 under the operation button 29 are released. Due to the elastic force, the force acting to push up the working rod 26 acts, but as the negative pressure formed in the cold-hot water conversion sleeve 22 is removed by inflow of air or cold / hot water through the orifice groove 22a of the inner surface thereof. It will rise slowly. At this time, the piston 24 installed on the lower end of the operating rod 26 is also raised.

Since the cold water and / or hot water are discharged for a predetermined time while the piston 24 at the lower end of the operating rod 26 is lifted up and the piston 24 is fully raised to block the second packing 26b at the top of the piston 24. The discharge of cold water and / or hot water is blocked.

The discharge time of the cold water and / or hot water is not only the size of the orifice groove 22a formed on the inner surface of the cold-hot water conversion sleeve 22 but also the spring 24e inside the piston 24 and the spring installed on the operating rod 26. It is determined by the elastic force of (30).

In other words, when the orifice groove 22a is large or the elastic force of the springs 24e and 30 is large, supply of air or water is easy, so that the discharge time is short, and the orifice groove 22a is small or the elastic force of the springs 24e and 30 is reduced. The smaller it is, the slower the air or water supply, and the longer the discharge time.

Therefore, it takes about 8 seconds to simply wash the face in the public toilet and about 25-30 seconds when washing the face in the shower room of the lodging facility. You can make as many adjustments as you need.

As described above, the autistic cold-hot water mixing faucet of the present invention is provided with a cold-hot water conversion sleeve in the valve unit installation space of the faucet body and a direction change key drawn outward from the piston of the valve unit therein. By rotating the valve unit together with the operation button to simplify the mixing ratio of cold water and hot water, and the configuration of the valve unit is extremely simple, there is a unique effect that is easy to manufacture.

Claims (2)

Faucet body (10) having chambers (12a, 12b) communicating with cold water and hot water inlet (11a, 11b), respectively, and having valve unit installation spaces (13) at the intersections of the chambers (12a, 12b) on both sides. ; In the self-closing cold-hot water mixing faucet provided with a valve unit 20 installed in the valve unit installation space 13 of the faucet body 10 to adjust the mixing ratio of cold water and hot water, The valve unit 20 is rotatably installed in the valve installation space 13, the cutting groove 22b is formed in the lower portion, the cold / hot water inlet grooves 22c, 22d are formed in the upper portion and the orifice in the longitudinal direction on the inner surface A cold / hot water conversion sleeve 22 having a groove 22a formed therein; The cold-hot water conversion sleeve 22 is installed to be elevated up and down, and the upper and lower surfaces of the cold-hot water conversion sleeve 22 is installed with a first packing (24a) for airtightness and the bottom cap (24b) a hollow piston (24) formed with a turning key (24c) fitted into the cutting groove (22b); The spline 26a which protrudes upward in the state which is elastically supported by the spring 24e in this piston 24, and engages with the spline 24d of the inner surface of the piston 24 is fitted in the lower outer surface, and it is accompanied with the piston 24. An actuating rod 26 rotatably installed; Autistic cold-hot water mixing faucet, characterized in that the operating button 29 is provided with a spring 30 is resiliently installed on the upper end of the operation rod 26 extending through the faucet body (10). The method of claim 1, wherein the rotary limiting projection 14 is formed at the bottom of the valve unit installation space 13 by the rotation limiting projection 14 at the bottom of the cold-hot water switching sleeve 22 to the cold-hot water switching Autistic cold-hot water mixing faucet, characterized in that the step (22f) is formed to rotate the sleeve (22) in a range of 45 ° to both sides.