KR20220139687A - Water saving device for sink - Google Patents

Abstract

Disclosed is a water saving apparatus for a sink, which is manufactured in a very simple mechanical structure to have a very low failure occurrence rate and considerably reduce manufacturing costs. The water saving apparatus for a sink includes: a housing installed and fixed to the floor of a kitchen in which a sink is installed through a plurality of fixing members, having a washing water outlet provided to discharge washing water through a faucet, having a piston tight contact protrusion part provided on one side of an inner circumference surface to form a washing water inlet hole, and having a guide seating groove provided on the other side; an inlet hole opening/closing unit detachably coupled to one side of the housing such that a piston head part elastically comes in tight contact with the piston tight contact protrusion part, and connected with a mixing pipe; and a piston operating unit detachably coupled to the other side of the housing such that the other side of the housing can be sealed, and, when a lever is pressed and rotated, moving an operation rod to one side of the housing and pushing an opening/closing piston of the inlet hole opening/closing unit to space the head part apart from the piston tight contact protrusion part by a predetermined distance to cause the washing water inlet hole to be opened, and, when the force exerted to the lever is removed, moving the operating rod to the other side of the housing due to an elastic force and restoring the operating rod to the original state thereof to space the operating rod apart from the opening/closing piston by a predetermined distance, thereby moving the opening/closing piston to the piston tight contact protrusion part due to the elastic force to bring the head part elastically into tight contact with the piston tight contact protrusion part to cause the washing water inlet hole to be closed.

Description

Water saving device for sink {WATER SAVING DEVICE FOR SINK}

The present invention relates to a water-saving device for a sink, and more particularly, to a water-saving device for a sink that is connected to the sink faucet and can control water supply through the faucet by stepping on it by a user.

Water consumption and demand are increasing worldwide, but fresh water supply is not enough, so water conservation is becoming more and more important.

Accordingly, in recent years, each country is making a lot of efforts to reduce the waste of water, and in the case of Korea, which is a water-scarce country, a consensus has been formed on the seriousness of water-related problems such as shortage of water resources and water pollution. Various studies are in progress.

On the other hand, the sink is used for kitchen work such as cooking or washing dishes, and a sink for cooking or washing dishes is installed in the sink, and the sink is basically provided with a water supply facility such as a faucet for cooking. Water is supplied when washing dishes or washing dishes.

When cooking and washing dishes as described above, during the entire process of cooking and washing dishes, most of the vegetables are trimmed and trimmed or the dishes are cleaned using a scrubber. When washing dishes, water supply and water supply are repeatedly required at the sink.

However, after opening the faucet for the first time and supplying water, it is cumbersome to keep repeating the operation of opening and closing the faucet while performing other operations such as cooking or washing dishes, even if you do not need water while cooking or washing dishes, And since it is reluctant to operate the faucet in a state where foreign substances such as food materials are on it, the water supply is maintained and used as it is, resulting in a fairly large amount of unnecessary water wastage.

Therefore, recently, by installing an electromagnet switch on the bottom side of the sink where the sink is installed, the electrically operated valve is connected to the mixing pipe connected to the faucet and the hot/cold water mixed and supplied, and the switch is opened and closed by stepping on the switch. To control the washing water supplied through the faucet, or to install a foot valve connected to the mixing pipe on the bottom of the sink so that the user can control the washing water supplied through the faucet by stepping on the foot valve the current situation.

However, when using the electromagnet switcher and an electrically operated valve, there are inconveniences due to short circuit, disconnection or battery replacement of the switch. However, in the case of a commonly used foot valve, the structure is complicated and there are many components, so the unit price of the foot valve is high, and the failure rate is high due to the characteristic of frequent operation, so there is a problem that it needs to be replaced periodically.

Republic of Korea Patent Publication No. 10-1325014 (2013.10.29.)

Accordingly, it is an object of the present invention to provide a water-saving device for a sink, which is manufactured with a very simple mechanical structure, has a very low failure rate, and can significantly reduce the manufacturing cost.

Other detailed objects of the present invention will be clearly grasped and understood by experts or researchers in this technical field through the specific contents described below.

The present invention is fixedly installed by a plurality of fixing members on the kitchen floor where the sink is installed, and a washing water outlet for discharging washing water to a faucet is provided, a piston close protrusion is provided on one side of the inner circumferential surface to form a washing water inlet hole, and a guide is mounted on the other side A housing provided with a groove portion, an inlet hole opening/closing unit that is detachably coupled to one side of the housing so that the piston head is elastically in close contact with the piston contact protrusion and a mixing pipe is connected, and the other side of the housing can be sealed It is detachably coupled to the other side of the housing so that when the lever is pressed and rotated, the actuating rod moves to one side of the housing and pushes the opening/closing piston of the inlet hole opening/closing unit to separate the head by a predetermined distance from the piston adhesion protrusion to introduce washing water. The hole is opened, and when the force applied to the lever is removed, the actuating rod is moved to the other side of the housing by the elastic force and restored to its original state. There is provided a water saving device for a sink including a piston operating unit that moves to elastically close the head to close the washing water inlet hole.

For example, the inlet hole opening/closing unit is detachably coupled to one side of the housing, an elastic member support is formed protruding from an inner circumferential surface, and a mixing pipe connecting means to which the mixing pipe is detachably coupled; The head part is in close contact with the side, and the rod part passes through the washing water inlet hole and protrudes from the head part so as to be adjacent to the piston operation unit, and between the elastic member support part of the mixing pipe connecting means and the head part of the opening/closing piston. It may include a first elastic member interposed in the elastic close contact with the head portion of the opening and closing piston to the piston contact protrusion.

Here, the mixing pipe connecting means is formed in a hollow shape, and a threaded portion for detachably coupling the mixing tube is provided on one side of the inner circumferential surface, and a threaded portion detachably coupled to the housing is provided on the other side of the outer circumferential surface, and the body; It may include an elastic member support formed to protrude from the inner circumferential surface of the part.

For example, the piston operation unit is detachably coupled to the other side of the housing and is coupled to a lever coupling cap having a through hole, and a guide seating groove formed on the other side of the inner circumferential surface of the housing is inserted and coupled to seal the other side of the housing. and a guide part through which a sliding fastening hole is formed; and a second elastic member disposed between the elastic member support plate and elastically adhering the elastic member support plate to the lever coupling cap, and one side of the lever coupling cap through the through hole of the lever coupling cap so as to be elastically attached to the lever coupling cap When the operating part is pressed by being inserted into the cap and interposed between the elastic member support plate and the lever coupling cap, the rotation support plate is rotated around the upper end, and the operation rod is moved to one side of the housing by the rotation support plate to push the opening/closing piston to the head The part is spaced apart from the piston adhesion protrusion by a predetermined distance, and when the force applied to the operation part is removed, the rotation support plate is pushed by the operation rod, which is restored to its original state by the elastic force of the second elastic member, and is elastically adhered to the lever coupling cap, thereby restoring the original state. It may include a lever that becomes

Here, the lever coupling cap includes a main body part having a threaded portion formed on an inner circumferential surface to be detachably coupled to the other side of the housing, a side plate provided on the other side of the main body part and having a through hole formed in the central part, and the guide part It may include a plurality of pressure-contact protrusions formed to protrude at predetermined intervals from the inner circumferential surface of the main body so as to be in close contact with the guide seating groove portion.

In addition, the guide portion is inserted and coupled to the guide seating groove portion, and a guide body having a sliding fastening hole through which an operation rod is slidably fastened in the central portion thereof, and the lever coupling cap is pressurized by the pressing and tight protrusion so as to be in close contact with the housing. It may include a contact plate protruding from the outer circumferential surface of the guide body, and an elastic member support groove provided in the guide body so that one side of the second elastic member penetrated by the operation rod is inserted and supported.

In addition, the lever includes a rotation support plate interposed between the elastic member support plate and the lever coupling cap, a connection part protruding from the rotation support plate to protrude through the through hole to the outside of the lever coupling cap, and a kitchen floor on which the housing is installed It is connected to the connection part so as to be spaced a predetermined distance from the connection part and rotates by pressing to move the operation rod in one direction of the housing. can do.

As described above, the water saving device for a sink according to an embodiment of the present invention has a mechanically very simple structure that opens and closes the washing water inlet hole by linearly reciprocating the opening/closing piston by the operating rod slidingly moved as the lever is operated. is made

Therefore, the water-saving device for sink according to an embodiment of the present invention significantly reduces the component parts compared to the general water-saving device for sink, which opens and closes the washing water inlet hole by the rotational movement of a plurality of links as the lever is operated, thereby significantly reducing the manufacturing cost. has the effect of significantly lowering

In addition, through a simple linear reciprocating motion of the actuating rod and the opening/closing piston and a simple operating mechanism by compression and expansion of the first and second elastic members, the failure rate can be greatly reduced and the service life can be significantly extended. This has the effect of significantly reducing maintenance costs.

Other effects of the present invention will be clearly understood and understood by experts or researchers in the art through the specific details described below, or during the course of carrying out the present invention.

1 is a cross-sectional view illustrating a state in which a washing water inlet hole of a water saving device for a sink according to an embodiment of the present invention is closed;
2 is a cross-sectional view showing an open state of the washing water inlet hole of the water saving device for a sink according to an embodiment of the present invention;

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

With reference to the drawings below, preferred embodiments of the present invention will be described in more detail.

1 is a cross-sectional view showing a closed state of the washing water inlet hole of the water saving device for a sink according to an embodiment of the present invention, and FIG. 2 is an open view of the washing water inlet hole of the water saving device for a sink according to an embodiment of the present invention. It is a cross-sectional view showing the state.

1 to 2 , the water saving device 100 for a sink according to an embodiment of the present invention may include a housing 110 , an inlet opening/closing unit 120 , and a piston operation unit 130 . .

The housing 110 may be fixedly installed on the kitchen floor where the sink is installed by a plurality of fixing members (not shown), and the housing 110 is provided with a washing water outlet 113 for discharging washing water to a faucet, , a piston contact protrusion 114 may be provided on one inner peripheral surface of the housing 110 so that the washing water inlet hole H1 passes through, and a guide seating groove 115 may be provided on the other side of the inner peripheral surface of the housing 110 .

For example, the housing 110 may include a body portion 111 , a fixed support portion 112 , a washing water outlet 113 , a piston contact protrusion 114 , and a guide seating groove portion 115 .

The body portion 111 may be formed in the form of a hollow pipe, and on one side of the inner circumferential surface there is a screw portion S4 provided in the body portion 121a of the mixing pipe connecting means 121 and a screw portion S1 that is screwed. It may be formed, and the other side of the outer circumferential surface may be formed with a screw portion (S2) screwed to the screw portion (S5) provided in the body portion (131a) of the lever coupling cap (131).

The fixing support 112 may be provided on both sides of the lower end of the main body and fixed to the kitchen floor where the sink is installed by a plurality of fixing members (not shown).

The washing water outlet 113 may be formed to protrude toward the central portion of the main body 111 to communicate with the main body 111 .

The piston contact protrusion 114 may protrude from one side of the inner circumferential surface of the main body 111 so that the washing water inlet hole H1 may be formed.

The guide seating groove part 115 may be formed on the other side of the inner circumferential surface of the main body part 111 .

The inlet hole opening/closing unit 120 is detachably coupled to one side of the housing 110 so that the piston 122 head part 122a is elastically adhered to the piston close contact protrusion 114 , and the inlet hole opening and closing unit 120 is detachably coupled to one side of the housing 110 . A mixing pipe (not shown) may be connected to the unit 120 .

For example, the inlet hole opening/closing unit 120 may include a mixing pipe connecting means 121 , an opening/closing piston 122 , and a first elastic member 123 .

The mixing pipe connecting means may be detachably coupled to one side of the housing, and an elastic member support may be protruded from an inner circumferential surface, and the mixing pipe may be detachably coupled.

For example, the mixing pipe connecting means 121 may include a body portion 121a and an elastic member support portion 121b.

The body portion 121a is formed in a hollow shape, and a screw portion S3 capable of detachably coupling the mixing pipe is provided on one side of the inner circumferential surface, and the other side of the outer circumferential surface is provided on the inner circumferential surface of the main body 111 of the housing 110 A screw portion S4 that is detachably coupled to the screw portion S1 may be provided.

The elastic member support portion 121b may be formed to protrude from the inner circumferential surface of the main body 121a to support the first elastic member 123 .

Meanwhile, the mixing and connecting means 121 may further include a support protrusion 121c and a watertight packing 121d.

The support protrusion 121c may protrude from the outer circumferential surface of the main body 121a, and the watertight packing 121d may be interposed between the support protrusion 121c and the main body 111 of the housing 110. have.

The opening/closing piston 122 has a head portion 122a in close contact with one side of the piston contact protrusion 114, and the rod portion 122b penetrates the washing water inlet hole H1 to form the piston operation unit 130 and It may be formed to protrude from the head portion 122a so as to be adjacent to each other.

Here, an elastic member support portion 122c for supporting the first elastic member 123 may be protruded from the outer circumferential surface of the head portion 122a, and an extension portion 122d may be formed at the end of the rod portion 122b. can be provided.

The first elastic member 123 is interposed between the elastic member support portion 121b of the mixing pipe connecting means 121 and the head portion 122a of the opening/closing piston 122, the head portion of the opening/closing piston 122 . (122a) to be elastically attached to the piston contact protrusion (114).

Here, a coil spring may be used as the first elastic member 123 .

The piston operation unit 130 may be detachably coupled to the other side of the housing 110 to seal the other side of the housing 110 .

When the piston operation unit 130 is rotated by pressing the lever 135, the operation rod 133 is moved to one side of the housing 110 to push the opening/closing piston 122 of the inlet hole opening/closing unit 120 to the head. The part 122a is spaced apart from the piston contact protrusion 114 by a predetermined distance so that the washing water inlet hole H1 is opened.

On the other hand, when the force applied to the lever 135 is removed, the operation rod 133 is moved to the other side of the housing 110 by the elastic force of the second elastic member 134 and restored to its original state, and the operation rod 133 is opened and closed. By being spaced apart from the piston 122 by a predetermined distance, the opening/closing piston 122 is moved toward the piston contact protrusion 114 by the elastic force of the first elastic member 123, so that the head part 122a is elastically attached to the washing water inlet hole ( H1) is closed.

For example, the piston operation unit 130 may include a lever coupling cap 131 , a guide part 132 , an operation rod 133 , a second elastic member 134 , and a lever 135 .

The lever coupling cap 131 is detachably coupled to the other side of the housing 110 and a through hole H2 may be provided.

For example, the lever coupling cap 131 may include a body portion 131a, a side plate 131b, and a pressure-contacting protrusion 131c.

The body portion 131a is formed in a hollow shape, and a screw portion S5 that is detachably screwed to the other side of the housing 110 may be formed on the inner circumferential surface.

The side plate 131b may be provided on the other side of the main body 131a, and a through hole H2 penetrating by the lever may be provided in the central portion thereof.

The pressure-contacting protrusion 131c is the body part ( A plurality of protrusions may be formed on the inner circumferential surface of 131a) at predetermined intervals.

The guide part 132 is inserted and coupled to the guide seating groove part 115 formed on the other side of the inner circumferential surface of the housing 110 to seal the other side of the housing 110 , and a sliding fastening hole H3 may be formed therethrough.

For example, the guide part 132 may include a guide body 132a, a contact plate 132b, and an elastic member support groove 132c.

The guide body 132a may be inserted and coupled to the guide seating groove 115 and a sliding fastening hole H3 through which the operation rod 133 is slidably fastened may be formed through the central portion.

The contact plate 132b may be formed to protrude from the outer circumferential surface of the guide body 132a so as to be pressed by the pressure contact protrusion 131c of the lever coupling cap 131 to be in close contact with the housing 110 .

Here, a watertight packing 132d may be interposed between the contact plate 132b and the housing 110 .

The elastic member support groove 132c may be provided in the guide body 132a so that one side of the second elastic member 134 penetrated by the operation rod 133 is inserted and supported.

The operation rod 133 may be slidably fastened with the rod part 133b to the sliding coupling hole H3 so that the elastic member support plate 133a is disposed between the lever coupling cap 131 and the guide part 132 . .

The second elastic member 134 is disposed between the guide portion 132 and the elastic member support plate 133a so as to be penetrated by the operation rod 133 to connect the elastic member support plate 133a to the lever coupling cap 131 . to be elastically attached to the

Here, a coil spring may be used as the second elastic member 134 .

One side of the lever 135 is inserted into the lever coupling cap 131 through the through hole H2 of the lever coupling cap 131 so as to be elastically adhered to the lever coupling cap 131, and an elastic member support plate ( 133a) and the lever coupling cap 131, so that when the user presses the operation part 135c with their feet, the rotation support plate 135a is rotated around the upper end and the operation rod by the rotation support plate 135a 133 is moved in one direction of the housing 110 to push the opening and closing piston 122 to separate the head part 122a from the piston contact protrusion 114 by a predetermined distance, and the force applied to the operation part 135c When removed, the rotation support plate 133a is pushed by the operation rod 133 restored to its original state by the elastic force of the second elastic member 134 and is elastically brought into close contact with the lever connection cap 131 to restore the original shape.

For example, the lever 135 may include a rotation support plate 135a, a connection part 135b, and an operation part 135c.

The rotation support plate 135a may be interposed between the elastic member support plate 133a and the lever connection cap 131 .

The connection part 135b may be formed to protrude from the rotation support plate 135a so as to protrude outside the lever coupling cap 131 through the through hole H2.

The operation part 135c is connected to the connection part 135b so as to be spaced apart from the kitchen floor on which the housing 110 is installed by a predetermined distance. ), and when the applied force is removed, it is restored to its original state by the operating rod 133 that is restored to its original state by the second elastic member 134 .

Again, an operation process and effect of the water saving device for a sink according to an embodiment of the present invention will be described with reference to FIGS. 1 to 2 .

1 to 2 , in order to supply washing water through a faucet using the water-saving device 100 for a sink according to an embodiment of the present invention, the user first uses the feet to operate the lever 135 . When the step 135c is pressed, the operation part 135c is rotated around the upper end of the rotation support plate 135a as shown in FIG. do.

As described above, as the operation part 135c rotates clockwise toward the kitchen floor side where the sink is installed around the upper end of the rotation support plate 135a, the rotation support plate 135a is also interlocked with the operation part 135c. The upper end is rotated clockwise while in contact with the side plate 131b.

When the rotation support plate 135a is rotated clockwise, the operation rod 133 is pushed by the rotation support plate 135a to slide along the sliding fastening hole H3 of the guide part 132 toward the opening/closing piston 122. will do

At this time, the second elastic member 134 is formed by the elastic member support plate 133a of the operation rod 133 as the operation rod 133 slides toward the opening/closing piston 122 along the sliding fastening hole H3. It is pressurized into a compressed state.

When the operation rod 133 slides toward the opening/closing piston 122 along the sliding fastening hole H3 of the guide part 132 by a predetermined distance, by the rod part 133b of the operation rod 133 The opening/closing piston 122 is pushed and moved toward the mixing pipe connecting means 121 .

As the opening/closing piston 122 is pushed by the operation rod 133 to move toward the mixing pipe connecting means 122 , the head portion 122a of the opening/closing piston 122 is moved from the piston adhesion protrusion 114 by a predetermined distance. By being spaced apart, the washing water inlet hole H1 is opened.

As described above, the head portion 122a of the opening/closing piston 122 is spaced apart from the piston adhesion protrusion 114 by a predetermined distance, so that a gap is generated between the head portion 122a and the piston adhesion protrusion 114, so that the washing water inlet hole H1 ) is opened, the washing water supplied from the mixing pipe connected by the mixing pipe connecting means 121 passes through the gap between the head part 122a and the piston contact protrusion 114 and then the washing water inlet hole H1 ) and the washing water outlet 113 are sequentially supplied to the faucet.

At this time, it is interposed between the elastic member support part 121b of the mixing pipe connecting means 121 and the head part 122a of the opening/closing piston 122 to close the head part 122a of the opening/closing piston 122 to the piston contact protrusion 114 ), the first elastic member 123 is in a compressed state by being pushed and pressed by the head portion 122a as the opening/closing piston 122 is spaced apart from the close contact protrusion 114 by a predetermined distance.

While supplying the washing water supplied from the mixing pipe from the mixing pipe to the faucet through the washing water outlet 113 in the same state as described above, in order to cut off the washing water, the user removes the foot from the operating unit 135c of the lever 135 and the operating unit 135c. When the force for pressing is removed, the compressed second elastic member 134 is restored to its original state, and as the second elastic member 134 is restored to its original state, the actuating rod 133 returns the elastic member support plate 133a to its original state. It is pushed by the restored second elastic member 134 and slidably moves toward the side plate 131b of the lever coupling cap 131 .

In addition, as the operation rod 133 slides toward the side plate 131b of the lever coupling cap 131, the rotation support plate 135a rotated clockwise around the upper end slides toward the side plate 131b. It is pushed toward the side plate 131b by the actuating rod 133 and rotates counterclockwise around the upper end to be in close contact with the side plate 131b, and the rotation support plate 135a is rotated counterclockwise around the upper end As it rotates and comes into close contact with the side plate 131a, the connection part 135b and the operation part 135c of the lever 135 are also interlocked with the rotation support plate 135a and rotated counterclockwise to restore their original state.

On the other hand, when the operation rod 133 slides toward the side plate 131b of the lever coupling cap 131, the opening/closing piston 122 moved toward the mixing pipe connecting means 121 by the operation rod 133 is also The first elastic member 123 moves toward the piston close protrusion 114 by the restoring force and closes the washing water inlet hole H1, so that the supply water supplied from the mixing pipe does not pass through the washing water inlet hole H1. Washing water is not supplied to the faucet through the washing water outlet 113 .

As described above, in the water saving device 100 for a sink according to an embodiment of the present invention, the opening/closing piston 122 linearly reciprocates by the operating rod 133 slidingly moved as the lever 135 is operated. It is manufactured with a very simple mechanical structure that opens and closes the washing water inlet hole (H1).

Therefore, the water-saving device 100 for sink according to an embodiment of the present invention significantly reduces the number of components compared to a general water-saving device for sink that opens and closes the washing water inlet hole by the rotational movement of a plurality of links as the lever is operated. This has the advantage of significantly lowering the production cost.

In addition, the water saving device 100 for a sink according to an embodiment of the present invention includes simple linear reciprocating motion of the operation rod 133 and the opening/closing piston 122 and compression of the first and second elastic members 123 and 134 and Through a simple operation mechanism by expansion, the failure rate can be significantly lowered, and the service life can be significantly extended, thereby significantly reducing maintenance costs.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those of ordinary skill in the art or those having ordinary knowledge in the art will have the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

(110): housing (111): body part
(112): fixed support (113): washing water outlet
(114): piston contact protrusion (115): guide seating groove
(120): inlet hole opening/closing unit (121): mixing pipe connecting means
(122): opening/closing piston (123): first elastic member
(130): piston operation unit (131): lever coupling cap
(132): guide part (133): operation rod
(134): second elastic member (135): lever

Claims (7)

It is fixedly installed by a plurality of fixing members on the kitchen floor where the sink is installed, and a washing water outlet for discharging washing water to the faucet is provided. being a housing;
an inlet opening/closing unit that is detachably coupled to one side of the housing so that the piston head is elastically in close contact with the piston close protrusion and to which the mixing pipe is connected; and
It is detachably coupled to the other side of the housing so as to seal the other side of the housing, and when the lever is pressed and rotated, the operation rod is moved to one side of the housing and pushes the opening/closing piston of the inlet hole opening/closing unit to close the head to the piston It is spaced apart from the protrusion by a predetermined distance so that the washing water inlet hole is opened. When the force applied to the lever is removed, the operation rod is moved to the other side of the housing by elastic force and restored to its original state, and the operation rod is spaced apart from the opening and closing piston by a predetermined interval to open and close the piston A water saving device for a sink, comprising a piston operation unit that is moved toward the piston contact protrusion by this elastic force, so that the head portion is elastically attached to close the washing water inlet hole. The method of claim 1,
The inlet hole opening and closing unit,
a mixing pipe connecting means that is detachably coupled to one side of the housing, an elastic member support is formed protruding from an inner circumferential surface, and a mixing pipe is detachably coupled to each other;
an opening/closing piston having a head in close contact with one side of the piston close protrusion and protruding from the head so that the rod passes through the washing water inlet hole and is adjacent to the piston operation unit; and
and a first elastic member interposed between the elastic member support part of the mixing pipe connecting means and the head part of the opening/closing piston to elastically adhere the head part of the opening/closing piston to the piston contact protrusion. 3. The method of claim 2,
The mixing pipe connecting means,
a body portion formed in a hollow shape and provided with a threaded portion capable of detachably coupling the mixing tube to one side of the inner circumferential surface and provided with a screw portion detachably coupled to the housing at the other side of the outer circumferential surface; and
A water saving device for a sink including an elastic member supporting part protruding from the inner circumferential surface of the main body. The method of claim 1,
The piston operation unit,
a lever coupling cap detachably coupled to the other side of the housing and provided with a through hole;
a guide part inserted and coupled to a guide seating groove formed on the other side of the inner circumferential surface of the housing to seal the other side of the housing and having a sliding fastening hole formed therethrough;
an operation rod to which the rod part is slidably fastened to the sliding fastening hole so that the elastic member support plate is disposed between the lever coupling cap and the guide part;
a second elastic member disposed between the guide part and the elastic member support plate so as to be penetrated by the mall operation rod to elastically adhere the elastic member support plate to the lever coupling cap; and
When one side is inserted into the lever coupling cap through the through hole of the lever coupling cap so as to be elastically adhered to the lever coupling cap and interposed between the elastic member support plate and the lever coupling cap, the operation part is pressed, the rotation support plate rotates around the upper end and the actuating rod is moved in one direction of the housing by the rotating support plate to push the opening/closing piston to separate the head part from the piston contact protrusion by a predetermined distance, and when the force applied to the actuating part is removed, the elastic force of the second elastic member A water saving device for a sink including a lever that is restored to its original state by being elastically close to the lever coupling cap by pushing the rotation support plate by the restored operating rod. 5. The method of claim 4,
The lever coupling cap,
a body part having a threaded part formed on the inner circumferential surface to be detachably screwed to the other side of the housing;
a side plate provided on the other side of the main body and having a through hole formed in the central part; and
A water saving device for a sink including a plurality of pressure-contacting protrusions protruding at predetermined intervals from an inner circumferential surface of the main body so that the guide portion can be pressed into the guide seating groove portion. 5. The method of claim 4,
The guide part,
a guide body inserted and coupled to the guide seating groove portion and having a sliding fastening hole through which an operation rod is slidably fastened to a central portion thereof;
a contact plate protruding from the outer circumferential surface of the guide body so as to be pressed by the pressure contact protrusion of the lever coupling cap to be in close contact with the housing; and
and an elastic member support groove provided in the guide body so that one side of the second elastic member penetrated by the operation rod is inserted and supported. 5. The method of claim 4,
The lever is
a rotation support plate interposed between the elastic member support plate and the lever coupling cap;
a connection part protruding from the rotation support plate so as to protrude outside of the lever coupling cap through the through hole; and
When the housing is connected to the connection part so as to be spaced apart from the kitchen floor by a predetermined distance and pressed to rotate, the operation rod is moved in one direction of the housing, and when the applied force is removed, the operation rod is restored to its original state by the second elastic member. A water saving device for a sink including an operating part that is restored to its original state.

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