JP3440074B2 - Water flow control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kind of water flow control device, and more particularly to utilizing the water flow pressure balance action on two sides of one pressure contact plate, and the pressure contact plate can modify the state of water stop by a small external force. In addition, the present invention relates to a water flow control device which is easy to operate and achieves a reliable water stopping effect.

[0002]

2. Description of the Related Art There are many known water flow control devices, for example, Taiwan Patent Application No. 8221855 filed by the present applicant.
There are No. 2 and No. 83200303, which are faucets,
It is used for shower heads, water sprinklers, water pipes, and other water flow devices, and most of them cut the water supply line by a mechanical structure forcing, so that if the water flow line is relatively long or If the water flowed below the high place, if the water flow was interrupted for a moment, the water flow hammer impact phenomenon occurred and the pipe line was instantaneously subjected to high pressure and burst. Furthermore, the water flow control structure of Taiwan Patent No. 86204167, which has the function of increasing pressure and reducing pressure, is designed to prevent the pipe rupture caused by the hammer phenomenon, and these well-known techniques already have a good function of controlling the opening and closing of water flow. However, the only drawback is that a relatively large pressing force is required during use.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a kind of water flow control device, which has a side accommodating chamber in which a side lid is connected near one seat and one pressure contact plate. The side storage chamber is divided into two spaces, one of which is connected to the separated water inlet and outlet, and the other space introduces the water flow through one side through hole and introduces it through the side through hole. By the equilibrium pressure of the generated water flow and the recovery spring pressed against the end of the push rod in the storage chamber, when the pressure contact plate closes the water flow outlet, a complementary pressure contact force is formed.
The structure shall ensure that the water is stopped.

In the above-mentioned water flow control device according to the present invention, the pressure contact plate presses the push rod by the multi-stage gear device, and the pressure contact plate moves under the action of an external force to generate a gap,
When circulating the water inlet and the outlet, the water pressure of the water inlet pushes the pressure contact plate to enter water, and when the water pressure of the water inlet is higher than the water pressure of the pressure contact plate introduced by the side through hole, that is, the pressure contact plate is operated. The purpose of the present invention is to achieve a valve gate structure for entering water by utilizing the fact that the action force required for this is extremely small, that is, the structure is simple, the operation is easy, and reliable.

[0005]

According to a first aspect of the present invention, there is provided a seat body, a partition plate is provided at an appropriate position in the middle of the water flow passage inside the seat body to isolate the water flow passage, and the isolated water flow passage. A water inlet is provided on one side, and a side convex edge having a central through hole and a penetrating portion that is a water outlet are provided on the other side.
One side lid is fitted to the outside of the seat body, and a side housing chamber is formed between the inside of the side lid and the seat body. Gear, driven gear, No.
1.Composed of recovery spring and push rod, installed on the push rod and push rod inside the tubular body of the gear seat.
The driven gear and driven gear and the first recovery spring
The main gear and the driven gear are the same as the driven gear of the push rod.
Using the elasticity of the first recovery spring, which is installed at the back side position,
It will be described later in response to the operation of the push rod
The multi-stage gear device for controlling the vertical movement of the pressure contact plate in multiple stages and the side lid, and the space of the inner edge surface forms the side accommodation chamber, and one annular convex edge is provided on the inner bottom surface of the side lid. , The side lid and the press plate, which are dish-shaped, have a central through hole at an appropriate position in the middle of the plate, a protrusion is formed around the central through hole, and a side through hole is provided near the bottom side. The above-mentioned multi-stage gear, which is the above-mentioned pressure contact plate and a push rod, has an expansion portion at one end, and a push rod sleeve is provided at the other end and then penetrates through the central through hole of the pressure contact plate, and in the water flow passage. A push rod abutting the push rod end of the device and having a second recovery spring mounted on the extension, the push rod being located in the side accommodation chamber of the seat.
A water flow is introduced from the side through hole and the water inlet of the pressure contact plate, and the above-described multi-stage gear device, the water outlet and the pressure contact plate, the push rod,
When the action of the push rod sleeve and the second recovery spring is combined, the multi-stage gear device controls the opening and closing of the pressure contact plate, so that the two sides of the pressure contact plate are in an appropriate hydraulic equilibrium state and the pressure contact plate is in the second position.
When the penetration part and the water inlet are closed by the action of the return spring , the outside of the pressure contact plate receives the water flow pressure that has entered from the side through hole of the pressure contact plate, forming a relatively large closing pressure contact force and stopping water. When the external force of the second recovery spring does not press the pressure contact plate and the pressure contact plate does not close the water inlet and the water outlet, the water pressure entering from the water inlet is larger than the water pressure in the side through hole and the pressure contact plate moves. The water flow control device is characterized in that the water flow state can be maintained continuously when the water flow inlet and the water flow outlet are communicated with each other, and a water flow control structure utilizing water pressure equilibrium is formed. The invention of claim 2 is characterized in that the pressure contact plate is provided on the side convex edge of the seat body with a protrusion, and the pressure contact plate is on the outer periphery of the push rod and is slidable with respect to the side convex edge. The water flow control device according to claim 1. The invention of claim 3 is characterized in that the peripheral side of the central through hole of the pressure contact plate has a flat shape and can tightly close the penetrating part of the water flow path of the seat body to provide a water stop function. The water flow control device described in 1. The invention of claim 4 is characterized in that the side convex chamber of the seat, the penetrating portion, the water inlet, and the protrusion of the pressure contact plate are accommodated in the side accommodating chamber provided in the side lid. The water flow control device described in 1. The invention according to claim 5 is characterized in that an annular convex edge is provided at a position corresponding to the side convex edge and the penetrating portion of the seat body on the bottom surface in the side lid. I am trying. According to a sixth aspect of the present invention, an annular convex edge is provided at a position corresponding to the side convex edge and the penetrating portion of the seat body on the bottom surface in the side lid, and the end portion of the recovery spring is accommodated inside the annular convex edge. The water flow control device according to claim 1 characterized by the above. According to a seventh aspect of the present invention, a tubular portion is provided on the side opposite to the side of the seat body on which the side cover is provided, the multi-stage gear device is mounted in the tubular portion, and the push rod penetrates the multi-stage gear device to provide the water flow passage inside. 2. Entering into and contacting one end of the push rod.
The water flow control device described in 1. The invention of claim 8 is
The water flow control device according to claim 1, wherein a flat and expanded pressing portion is formed on an end object of the push rod protruding outside the seat body.

[0006]

1 and 2 are an exploded perspective view and an exploded sectional view of the present invention. As can be seen from these figures, the present invention comprises a seat body 1, a multistage gear device 2 having a push rod 20, a pressure contact plate 3 and a push rod 4. One of the water flow passages 11 is provided in the center of the seat body 1, and a partition plate 111 is provided in the middle of the water flow passages 11 to partition the water flow passages 11, and a water inlet port is provided on the water inlet side of the water flow passages 11. 114 is provided,
A side convex edge 113 and a central through hole 112 are provided on the water outlet side ,
A plurality of penetrating portions 115, that is, water outlets are provided on the peripheral side of the central through hole 112. The side of the seat 1 is one side cover 1
2, the space inside the side lid 12 forms a side accommodation chamber 121 to accommodate the above-described side convex edge 113, the penetrating portion 115 and the water inlet 114, and the penetrating portion 115 on the bottom surface inside the side lid 12.
An annular convex edge 122 is provided at a position corresponding to. On the other side of the seat body 1, one cylindrical portion 13 communicating with the water flow passage 11 is convex.
Is set, the multi-stage gear unit 2 is inserted into the tube portion 13, the push rod 20 of the multistage gear unit 2 is one of the columnar body,
One end thereof enters the side of the penetrating portion 115 in the water flow passage 11 of the seat body 1, just abuts on one end of the push rod 4, and the other end thereof projects outward to form one pressing portion 21. It has an open / close structure that controls the opening and closing of water inflow and outflow.

Further, the pressure contact plate 3 has a single dish shape, a central through hole 31 is provided at an appropriate position in the middle of the pressure contact plate 3, and a protrusion 33 is formed around the central through hole 31. It has a flat shape, exactly covers the through portion 115, that is, the water outlet, and has one side through hole 32 near the bottom side. The push rod 4 is formed as one rod body, and one extension portion 41 is provided in the middle of the push rod 4, and the push rod 4 is actively inserted into the push rod sleeve 43, and the extension portion 41 at the other end of the push rod 4 is provided. A second recovery spring 42 is attached to the inner side wall of the side lid 12 and is in contact with the inside of the annular convex edge 122.

FIG. 3 is an exploded perspective view of the multistage gear device of the present invention. See also its operation shown in FIGS. The multistage gear device 2 is composed of a push rod 20, a gear seat 22, a main driving gear 23, a driven gear 24, and a first recovery vane 25. Stair edge 201 is provided in the middle of the push rod 20, the annular groove 202 and the pressing portion 21 is respectively provided at the two ends, the center of the gear seat 22
Through holes 221 are provided, the upper housing chamber 222 and the lower housing chamber 223 vertically Nitan portion of the through hole 221 are respectively provided on. At least two sets of symmetrical guide blocks 224 and stopper blocks 225 extending along the axial direction are provided on the inner wall surface of the lower storage chamber 223, and a slide groove 2241 is provided at the center of the convex guide block 224. Two convex slidable surfaces 2242, 2243 extending in the same direction are provided at the outer end of the convex guide block 224. The step between the inclined sliding surfaces 2242 and 2243 is one recess 2
244 has been formed. The water blocking cap 26 is inserted into the upper housing chamber 222, one through hole 261 is provided in the center of the water blocking cap 26, and one O ring is provided on the circumferential side. Upper containment chamber 22
When inserted in 2, it completely blocks the outflow of water flow. The main driving gear 23 and the driven gear 24 have an annular shape and are provided with convex tooth portions 231 and 241 which mesh with each other. A plurality of dense guide convex blocks 2 on the outer peripheral edge of the driving gear 23
32 are symmetrically provided, and a plurality of relatively rough guide convex blocks 242 are also provided on the outer periphery of the driven gear 24. The end portion of the guide convex block 242 of the driven gear 24 is similarly cut obliquely in accordance with the convex tooth portion 241. First recovery spring 25
Washer 251, C-shaped snap ring 25 on the two ends of
Two are provided. At the time of combination, after the third recovery spring 27 is placed in the upper accommodation chamber 222, the water blocking cap 26 is mounted thereon, and the push rod 20 is inserted into the through hole 261 of the water blocking cap 26 and the through hole of the gear seat 22. 221 is extended to the center of the lower accommodating chamber 223 of the gear seat 22 and the pressing portion 21 of the push rod 20 is pressed against the water blocking cap 26, so that the push rod 20 has the step edge 20 thereof.
1 is pressed against the back side of the driving gear 23. Further, the main driving gear 23 and the driven gear 24 are meshed with each other by the convex tooth portions 231 and 241, and are provided on the circumferential side of the push rod 20, and the washer 251 is provided on the back side of the driven gear 24.
The first recovery spring 25 is sandwiched between the C-shaped snap ring 252 and the C-shaped snap ring 252, and the C-shaped snap ring 252 sandwiches the annular groove 202 of the push rod 20.
3, the driven gear 24 and the first recovery spring 25 are connected.

After the main driving gear 23 and the driven gear 24 mounted on the push rod 20 are meshed with each other by the convex tooth portions 231, 241, a guide convex block 232 on the peripheral edge of the main driving gear 23 is formed.
Slides into the sliding groove 2241 between the guide protrusions 242, and the guide protrusions 242 on the peripheral edge of the driven gear 24 enter near the stopper block 225 and are locked. The natural state is as shown in FIG. 4 (at this time, the guide convex block 242 of the driven gear 24 is locked beside the stopper block 225, and the convex tooth portion 231 of the driving gear 23 and the driven gear 2 are engaged.
The convex tooth portion 241 of No. 4 does not completely mesh). When the push portion 21 is pushed (see FIG. 5) and the push rod 20 drives the driving gear 23 to slide it outward along the lower housing chamber 223, the driven gear 24 is also pushed by the driving gear 23. Slide outward (see Figure 5). In this way, when the driven gear 24 slides and the guide convex block 242 separates from the side of the stopper block 225, the driving gear 23,
By utilizing the mutual guidance of the convex tooth portions 231 and 241 of the driven gear 24, the driven gear 24 can be rotated to form the meshing state in which the convex tooth portion 241 is completely in close contact with the convex tooth portion 231. At this time, the guide convex block 242 also rotates to reach the middle part of the convex guide block 224 of the lower storage chamber 223 (see FIG. 6), the external force on the pressing portion 21 disappears, and the push rod 20 is replaced by the third recovery spring. When the driven gear 24 is driven by the elastic force of 27, the driven gear 24 moves to the original position.
1) The recovery spring 25 tries to recover to the original position by the elastic action of the recovery spring 25 , but the guide convex block 242 of the driven gear 24 slides into the recess 2244 under the guidance of the inclined sliding surface 2242, and thereby the driven The gear 24 is a convex guide block 224.
The state in which the push rod 20 is locked to the outer end portion of the push rod 20 is held (see FIG. 7; at this time, the push rod 20 also holds the state of protruding outward). If the pressing portion 21 is pressed again and the push rod 20 again presses the driven gear 24 via the driving gear 23 (see FIG. 8), the guide convex block 242 of the driven gear 24 contacts the side portion of the stopper block 225. Due to the influence of contact, the convex tooth portion 231 of the driving gear 23 and the driven gear 24
The convex tooth portion 241 of the above also recovers to the incomplete meshing state. When the driven gear 24 slides and the guide convex block 242 leaves the position beside the stopper block 225, the convex tooth portion 2
The driven gear 24 can be rotated by utilizing the mutual guidance of 31 and 241, and the convex tooth portions 231 and 241 can be brought into a meshing state in which they are in close contact with each other (see FIG. 9). After that, the acting force on the pressing portion 21 disappears and the driving gear 2
When the force by which 3 presses the driven gear 24 disappears, the guide convex block 242 receives the action of the first recovery spring 25 and the inclined sliding surface 224.
Slide outward along 3 to remove the position of the convex guide block 224 (see FIG. 10), and recover the original position.

FIGS. 11 and 12 are operation display diagrams of the present invention in a water-stopped state and a press-out water state. As can be seen from the figure, the push rod 20 of the multi-stage gear device 2 has an end portion which is the water flow passage 11
The press contact plate 3 abuts with one end of the push rod 4 penetrating the central through hole 112 therein, the press contact plate 3 is fitted to the side convex edge 113 on the side surface of the seat body 1 at the central projection portion 33, and slidable thereon. Presents a combined state. Push rod 4 has a central through hole 3 with one end
1, 112 penetrates into the water flow passage 11 and contacts the push rod 20 described above, and the other end of the push rod 4 is connected to the second recovery bar.
It is pressed against the annular convex edge 122 in the side lid 12 under the bias of the cable 42 . In the start state where no external force is applied to the pressure contact plate 3, the second recovery spring 42 presses the pressure contact plate 3 through the expansion portion 41 of the push rod 4, and the water pressure of the water flow introduced into the side through hole 32 is combined. As a result, the press contact plate 3 tightly presses against the side portion of the seat body 1, and the flat portion near the center of the press contact plate 3 presses tightly against the penetrating portion 115, so that the two partition plates 111 in the seat body 1 are pressed against each other. An isolated state is formed in the side water flow passage 11 (see FIG. 11).
(See), this is a water stop state. Push rod 20
When the second recovery spring 42 is compressed by pushing the push rod 4 and pushing the push rod 4, the water flow in the water flow passage 11 respectively
14, flow through the side through hole 32 to the two sides of the press contact plate 3,
At this time, since the opening of the water inlet 114 is larger than the hole diameter of the side through hole 32, the water pressure flowing from the water inlet 114 is larger than the water pressure flowing from the other side through hole 32, and at this time, the pressure contact plate 3 is pushed. The pressure contact plate 3 slides out of the penetrating portion 115 by sliding toward the outside of the side lid 12, and the water inlet 114
And the penetrating portion 115 communicate with each other, and the water flow passage 1 on the two sides of the partition plate 111.
1 communicates with each other (see FIGS. 12 and 13) and exhibits a normal water discharge state.

The following points should be particularly emphasized.
Before the pressure contact plate 3 receives the pressure of the water flow at the water inlet 114 and slides open, the pressure of the water flow entering the one side of the pressure contact plate 3 from the side through hole 32 is relatively large, so that the pressure contact plate 3 is The penetration portion 115, which is the water outlet, is tightly closed to form a water-stop state. If the push rod 20 of the multi-stage gear device 2 pushes the push rod 4, the push rod 4 rises to form one space, that is, the gap between the push rod 4 and the push rod sleeve 43 is another. A water flow passage is formed to allow the water flow to flow into the water flow passage 11 through the water flow passage, and the water flow state reduces the pressure on the outside of the pressure contact plate 3 of the water flow. The plate 3 slides outward relatively easily. Relatively, when the water is closed,
First, when the push rod 20 is pressed again to restore the length of the push rod 20, the push rod 4 is pushed inward by the elastic force of the second recovery spring 42 on the outside of the pressure contact plate 3, The middle portion of the pressure contact plate 3 receives the pressure of the second recovery spring 42 and closes the penetrating portion 115. At this time, the penetrating portion 115
Is closed to prevent the water flow from flowing, and the outer space of the pressure contact plate 3 is electrically connected to the side through hole 32. Therefore, the water flow continues to be supplemented from the side through hole 32 to the space outside the pressure contact plate 3, and The incoming water flow pressure slowly closes the press contact plate 3 completely to the peripheral side of the penetrating part 115, thus achieving a water stop and launch control structure utilizing the hydraulic equilibrium principle, and the greatest advantage of this structure is instantaneous stop. It is possible to completely prevent the formation of the hammer phenomenon of water at the time of water.

FIGS. 14 and 15 are an exploded view and a sectional view of a combination thereof with a related water discharge head structure when the present invention is carried out. As can be seen from these figures, the embodiment of the present invention is
A male screw 14 is provided at the bottom end of the water flow path 11 of the seat body 1, a pointed extension 50 is provided at the bottom of the water discharge head 5, and a side opening 501 is provided beside the end of the extension end of the pointed extension 50. It is provided and communicates with the water flow path in the water discharge head 5. The seat body 1 is placed in the water discharge head 5, and the pressing portion 21 is located at the side opening 50.
1, the bottom side of the seat body 1 abuts on the inner plug body 51 having a V-shaped convex shape on the bottom side, the outer side of the inner plug body 51 is inserted into the inner housing groove 521 of the connecting sleeve 52, and the inner housing The bottom of the groove 521 is provided with a groove shape that is closely coupled to the V-shaped convex projection on the bottom side of the inner plug body 51. Separately, one conduit 53 is provided, a stopper piece 532 is projectingly provided on the outer side of the middle stage thereof, and female threads 531 and male threads 533 are respectively provided at two ends thereof, and the conduit 53 has one end of the female thread 531 and the inner plug body 51. Inserted into the through hole 511 of the seat body 1 and threadedly connected to the male screw 14 of the seat body 1, and the stopper piece 532 comes into contact with the bottom side of the connection sleeve 52 to connect the connection sleeve 52 and the inner plug body 5.
1 and the water discharge head 5, and a male screw 533 at the other end of the conduit 53 is coupled to the water discharge pipe 54 via a female screw 551 of one connecting nut 55.

[0013]

As can be seen from the above description, the water flow control device of the present invention controls the advancing and opening / closing of the water flow on the two sides of the pressure contact plate by utilizing the water pressure equilibrium principle, and by this water flow equilibrium control structure. Overcome the water hammer phenomenon, its overall structure is reliable, simple structure, reliable stopping of water and easy operation, as well as industrial availability, novelty and inventive step. Have The above description relates to the embodiments of the present invention and does not limit the scope of the claims of the present invention. Modifications or alterations of details that can be made based on the present invention have the same effects as the present invention. All achievable technical matters shall fall within the scope of the claims of the present invention.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is an exploded sectional view of the present invention.

FIG. 3 is an exploded perspective view of the multistage gear device of the present invention.

FIG. 4 is an operation diagram of the multistage gear device of the present invention.

FIG. 5 is an operation diagram of the multistage gear device of the present invention.

FIG. 6 is an operation diagram of the multistage gear device of the present invention.

FIG. 7 is an operation diagram of the multi-stage gear device of the present invention.

FIG. 8 is an operation diagram of the multistage gear device of the present invention.

FIG. 9 is an operation diagram of the multistage gear device of the present invention.

FIG. 10 is an operation diagram of the multistage gear device of the present invention.

FIG. 11 is an operation display diagram of the present invention in a water-stopped state.

FIG. 12 is an operation display diagram of the present invention in a pressed water discharge state.

FIG. 13 is an operation display diagram of a water discharge holding state of the present invention.

FIG. 14 is an exploded view of a related faucet structure when the present invention is implemented.

15 is a cross-sectional view after the combination of FIG.

[Explanation of symbols]

1 seat body 231, 241 convex tooth part 11 water flow path 232, 242 guide convex block 111 partition plate 24 driven gear 112, 31 central through hole 25 first recovery spring 27 third recovery spring 113 side convex edge 251 washer 114 water inlet 252 C-shaped snap ring 115 Penetration part or water outlet 26 Water stop cap 12 Side lid 3 Pressure contact plate 121 Side accommodation chamber 32 Side through hole 122 Annular convex edge 33 Projection part 13 Cylindrical part 4 Push rod 14, 533 Male screw 41 Expansion part 2 Multi-stage gear device 42 Second recovery spring 20 Push rod 43 Push rod sleeve 201 Step edge 5 Water ejection head 202 Annular groove 50 Sharp convex extension 21 Pressing portion 501 side opening 22 Gear sheet 51 Inner plug body 221, 261 Through hole 511 Through hole 222 Upper accommodation chamber 52 Connecting sleeve 223 Lower accommodation chamber 521 Inner accommodation groove 224 Convex guide block Third conduit 2241 guideways 531,551 female screw 2242,2243 HasuNameramen 532 stopper piece 2244 recess 54 water outlet pipe 225 stopper block 55 connecting nut 23 driving gear

Claims (8)

(57) [Claims] 1. A seat, a partition plate is provided at an appropriate position in the middle of the water flow passage inside the seat to isolate the water flow passage, and a water inlet is provided on one side of the isolated water flow passage. , The other side is provided with a side convex edge having a central through hole and a penetrating portion which is a water outlet, and one side lid is fitted to the outside side portion of the seat body so that the inside of the side lid and the seat are seated. The seat body having a side accommodation chamber formed between the body and a multi-stage gear device, which is composed of a gear seat, a main gear, a driven gear, a first recovery spring and a push rod, and is formed in a tubular body of the gear seat. For push rod and push rod
Installed the driven gear and driven gear and the first recovery spring
The driven gear and driven gear are driven teeth of the push rod.
Utilizing the elasticity of the first recovery spring built in the back position of the car
Are engaged with each other, and the push rod is operated
The above-mentioned multi-stage gear device that controls the vertical stop water of the pressure contact plate described later in multiple stages is a side lid, and the space of the inner edge surface forms the side storage chamber, and one annular convex edge is provided on the inner bottom surface of the side lid. In addition, the side lid and the pressure contact plate have a dish shape, a central through hole is provided at an appropriate position in the middle of the side lid, a protrusion is formed around the central through hole, and a side through hole is provided near the bottom side. The pressure contact plate is provided with the above-mentioned pressure contact plate, which has an expansion portion at one end, and a push rod sleeve is provided at the other end and penetrates through the central through hole of the pressure contact plate, and the above-mentioned multi-stage in the water flow passage. The push-through rod, which is in contact with the push rod end of the gear unit and has a second recovery spring provided in the expanded portion, and a side through hole of a press-contact plate located in the side accommodation chamber of the seat body. /> And the water flow from the water flow inlet, and the above-mentioned multi-stage gear device, the water flow outlet and the pressure contact plate, the push rod, the push rod sleeve. Parts and
When the action of the second recovery spring is combined and the multi-stage gear device controls the opening and closing of the pressure contact plate, the two sides of the pressure contact plate are brought into an appropriate hydraulic equilibrium state and the pressure contact plate is penetrated by the action of the second recovery spring. when closing the parts and water inlet receives water pressure outside enters from the side through-hole of the separate pressure plate of the press plate, to form a water stop state to form a relatively large closing pressure force, 2nd
When the external force of the return spring does not press the pressure contact plate and the pressure contact plate does not close the water inlet and the water outlet, the water pressure entering from the water inlet is larger than the water pressure in the side through hole, and the pressure contact plate is moved to move the water inlet and the water outlet. A water flow control device, which is capable of continuously maintaining a water discharge state when communicating with each other and forms a water flow control structure utilizing water pressure balance. 2. The pressure contact plate is provided with a protrusion on the side convex edge of the seat body, and the pressure contact plate is on the outer periphery of the push rod and is slidable with respect to the side convex edge. The water flow control device according to claim 1. 3. The pressure-contacting plate according to claim 1, wherein the central through-hole of the press-contact plate has a flat peripheral side to tightly close the penetrating part of the water flow passage of the seat to provide a water stop function. Water flow controller. 4. The side accommodating chamber provided in the side lid accommodates the side convex edge of the seat, the penetrating portion, the water inlet, and the protrusion of the pressure contact plate. Water flow controller. 5. The water flow control device according to claim 1, wherein an annular convex edge is provided at a position corresponding to the side convex edge and the penetrating portion of the seat body on the bottom surface in the side lid. 6. An annular convex edge is provided at a position corresponding to a side convex edge and a penetrating portion of the seat body on the bottom surface in the side lid, and an end portion of the recovery spring is accommodated inside the annular convex edge. Characterized by,
The water flow control device according to claim 1. 7. A tubular portion is provided on the side opposite to the side of the seat body on which the side lid is provided, and a multi-stage gear device is mounted in the tubular portion.
The push rod penetrates the multi-stage gear device into the water flow passage and is in contact with one end of the push rod,
The water flow control device according to claim 1. 8. The water flow control device according to claim 1, wherein a flat and expanded pressing portion is formed on an end object of the push rod protruding outside the seat body.