JPS6152348B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in faucets, particularly self-closing faucets that automatically close due to inflow water pressure.

Conventionally, there is a type of self-closing faucet shown in FIG. 4 that has been used as water supply and hot water supply equipment in general baths and the like. This one has a valve body 101 and a faucet body 100 on the bottom side of the valve body 101 corresponding to the valve seat 102.
Together, they form a pressure chamber 107, and this pressure chamber 107
A notch (not shown) provided on the outer peripheral surface of the valve body 101
A spring 10 communicates with the primary side of the valve seat 102 and presses the valve body 101 against the valve seat 102.
3 is disposed within the pressure chamber 107, and is configured to maintain a closed state under normal conditions. In use, by pushing the handle 104 from above, the tip end surface of a push rod 105 integrally connected to the handle comes into contact with the upper end surface of the valve rod 106 attached to the valve body 101, and the valve body 101 is pushed downward. lateral movement to pressure chamber 1
07 is discharged from the notch to the primary side of the valve seat 102, the valve body 101 is separated from the valve seat 102 to open the valve, and after obtaining the desired amount of water, the handle 104
When the pressure is released, the volume of the pressure chamber 107 increases due to the restoring force of the spring 103 and the water flowing in from the notch, and the valve element 101 reaches the surface of the valve seat 102 and closes.

Generally, the amount of water discharged from a faucet is determined by the degree of separation between the valve body and the valve seat. However, the third
In the conventional device shown in the figure, the distance C between the lower end surface of the push rod 105 and the upper end surface of the valve stem 106 is configured to be constant, and there is no means for regulating the amount of pressure on the handle 104. Therefore, the downward stroke of the push rod 105 is also constant. Therefore, in order to adjust the degree of opening between the valve body 101 and the valve seat 102, the push rod 105 is used.
The descent of the tank had to be stopped midway, making it difficult to adjust the amount of water spouted, and resulting in spouting more water than necessary, making it impossible to conserve water.

The object of the present invention is to eliminate the above-mentioned drawbacks, to easily adjust the amount of water discharged, and to save water.

The basic structure of the present invention is that in a self-closing faucet, a second push rod is screwed onto a first push rod that descends together with the handle, and the second push rod is rotated to connect the valve body and the second push rod. The amount of water spouted is adjusted by adjusting the distance to the push rod and making the movement stroke of the valve body variable.

Hereinafter, a detailed explanation will be given based on the embodiments shown in the attached drawings. FIG. A faucet body having a water inlet 3 and a water outlet 4
is removably inserted into the opening 1a at the upper end of the faucet body, and is integrally and stably supported by the faucet body 1 at an annular fitting portion 1b provided in the opening and a partition wall 1c formed midway through the flow path 2, as will be described later. A valve case 7 consists of a cylindrical upper valve case 5 forming a valve seat etc. and a cylindrical lower valve case 6 which is integrally screwed onto the lower end of the upper valve case 5. A tubular first push rod is fitted loosely through an elastic member, that is, a spring 8, so that it can be raised and lowered; 9 is a small-diameter hollow portion 10 of the first push rod;
A second push rod 12 is provided with a valve shaft 11 loosely fitted to the inner wall of the pipe of the first push rod 7 on its upper part, and a valve body slidable within the lower valve case 6; 13 is a valve body. A spring supporting 12 from below, and 14
is a handle integrally attached to the upper end of the first push rod 7.

To describe the structure of the faucet main body 1 in more detail, the upper valve case 5 has an opening 15 at the lower end to serve as a water flow path when the valve is opened, and a valve seat 16 protrudes from the lower surface of the circumference of the opening 15. A water outlet 4 side channel 2 is formed in the upper hollow part 17 wall which communicates with the opening 15.
A required number of outflow openings 18 are provided which communicate with each other. Furthermore, an annular support 19 that slidably supports the first push rod 7 is integrally screwed to the upper part, and a spring 21 that presses the first push rod 7 upward is disposed inside the annular support 19. As a result, when the handle 14 is pressed downward from above, the first push rod 7 can slide down inside the annular support 19 against the reaction force of the spring 21. 20,
Reference numeral 20 designates washers, and one washer 20 is fixed to the first push rod 7 to prevent it from coming off from the annular support 19. 22 is the upper valve case 5
and the annular fitting portion 1b of the faucet body 1.
A ring 23 is a packing having a U-shaped cross section that is disposed between the first push rod and the inner circumferential surface of the upper cover 5 to prevent leakage of water.

The lower valve case 6 is formed so that its inner peripheral surface serves as a sliding guide surface for the valve body 12, and an inflow opening 24 is opened in the upper part near the valve seat 16.
A strainer 25 is provided outside. Furthermore, in the lower part, a pressure chamber 26 is formed by the lower surface of the valve body 12 and the inner circumferential surface of the lower valve case 6, and the above-mentioned spring 13 is disposed within this pressure chamber 26, and the lower end opening of the lower valve case 6 The pressure chamber 26 is connected to the flow path 2 on the water inlet 3 side by a small passage 57 provided in the pressure reducing plate 27 attached to the water inlet 3 . 28 is a strainer attached to the upstream side of the pressure reducing plate 27.

Next, the first push rod 7 has a small diameter hollow part 10 having a threaded part 7a formed thereon to a required length at approximately the upper half of its inner periphery, and a sliding guide part 7b having an inner diameter slightly larger than the inner diameter of the small diameter hollow part at approximately the lower half thereof. It is a tubular rod having an inner circumference of different diameters, and its upper end is integrally attached to the handle 14.
The second push rod 9 consists of a threaded portion 9a of a required length that is screwed into the threaded portion 7a of the first push rod 7, and a base portion 9b at its lower end that contacts and presses the upper end surface of the valve stem 11. Furthermore, an engaging portion 9c for rotating the second push rod 9 by engaging with a driver or the like is provided at the tip. Therefore, if the driver is inserted through the small diameter hollow part 10 and its tip is engaged with the engaging part 9c, the second push rod 9 will be rotated, and the second push rod 9 will be rotated.
Since the push rod is movable in the vertical direction within the first push rod 7, the distance between the lower end surface of the base 9c and the upper end surface of the valve rod 11 can be arbitrarily changed.

The valve rod 11 has its upper portion slidably supported within the sliding guide portion 7b of the first push rod 7, passes through the opening 15 of the upper valve case 5, and has the valve body 12 integrally attached to its lower end. As mentioned above, the valve body has spring 1
3 in the direction of the valve seat 16 surface. Valve body 1
Reference numeral 2 denotes a gasket 29 that tightly contacts the valve seat 16, a support plate 30 on which the gasket is placed and receives the biasing force of the spring 13, and a support plate 30 provided on the outer circumference of the support plate 30, which connects the outer circumference of the support plate 30 and the inner circumference of the lower valve case 6. It is composed of a gasket 31 with a U-shaped cross section that prevents water from flowing into the pressure chamber 26 through the gap between the pressure chamber 26 and the surface.

14a is a decorative cap that is detachably attached to the upper end of the handle 14 so as to hide the driver insertion portion.

The operation when the faucet having the above configuration is connected to a required water supply or hot water supply piping system will be described below.

First, when the handle 14 is pressed by hand from above, the first push rod 7, which is integrally attached to the handle 14, descends against the reaction force of the spring 8, and is screwed onto the first push rod 7. The lower end surface of the base 9b of the second push rod 9 comes into contact with the upper end surface of the valve stem 11 of the whole 12 and is pushed. As the valve stem 11 is lowered by the same pushing movement, the valve body 12 resists the reaction force of the spring 13, and moreover, the water in the pressure chamber 26 is diverted from the small passage 57 provided in the pressure reducing plate 27 to the side of the water inlet 3. While extruding into the flow path 2, it descends together with the second push rod 9, and the packing 2
9 separates from the valve seat 16 and opens, and water forms the valve case A. The water inflow opening 24 of the lower valve case 6, the opening 15 of the upper valve case 5, the hollow part 17, and the outflow opening 1.
Water flows out in the order of 8. After lowering the handle 14 to the maximum extent, when the pressure on the handle 14 is released, the restoring force of the spring 8 causes the first push rod 7 to
Since the second push rod 9 connected to the same push rod rises, the valve body 12 rises under the restoring force of the spring 13 and attempts to close the valve. At this time, since the volume of the pressure chamber 26 is small, even if the valve body 12 is restored to its original position by the restoring force of the spring 13,
Since the inside of the pressure chamber 26 is in a reduced pressure state, it cannot be easily restored, and it is slowly restored as water flows in from the small passage 57 of the pressure reducing plate 27, and after discharging a certain amount of water, the valve is closed. The gasket 29 of the body 12 is the valve seat 16
The valve closes when it comes into close contact with the valve. The operation of the faucet main body 1 in use has been described above, and the faucet according to the present invention has the second push rod 9 built into the first push rod 7, and the upper end surface of the valve stem 11. By making the distance between the lower end surface of the second push rod 9 adjustable and making the movement stroke of the valve rod 11, that is, the valve body 12 variable, the degree of opening between the seal 29 of the valve body 12 and the valve seat 16 can be adjusted. The amount of water discharged is adjusted by adjusting the amount of water.

First, in order to reduce the amount of water discharged, the flow path area can be reduced by reducing the degree of opening between the gasket 29 of the valve body 12 and the valve seat 16. Insert a screwdriver or the like into the small diameter hollow part 10 of the first push rod 7, and rotate the second push rod 9 through the engaging part 9c of the second push rod 9 in the upward direction in FIG. Move the required amount. The above operation increases the distance between the lower end surface of the base 9b of the second push rod 9 and the upper end surface of the valve stem 11 of the valve body 12, that is, the valve opening stroke, so that even if the handle 14 is pressed during operation, the valve does not open. Since the valve stem 11 does not come into contact with the second push rod 9 by the amount of descent of the handle 14 within the starting stroke range, the valve stem 11 does not descend and maintains the closed state. Then, by further pressing the handle 14, the lower end surface of the base 9b of the second push rod 9 comes into contact with the upper end surface of the valve rod 11, and the valve rod 11 is lowered only when the amount of descent of the handle 14 becomes larger than the valve opening stroke. The valve will be opened. Therefore, while the movement stroke of the handle 14 is constant, the valve opening start stroke acts as so-called "play" when opening the valve, so the larger the stroke, the more the valve body 12
The movement stroke of is shortened, and the degree of opening between the seal 29 and the valve seat 16 is reduced, so the area of the flow path formed by the opening is reduced, and the amount of water discharged from the water outlet 4 can be reduced. .

On the other hand, when increasing the amount of water discharged, the flow path area can be increased by separating the valve seat 16 and the gasket 29, and the second push rod 9 can be rotated and moved downward using the same means as described above. Reduce valve starting stroke. Therefore, since the stroke amount is small, the "play" during operation becomes small, the movement stroke of the valve stem 11 becomes long, the degree of opening between the seal 29 of the valve body 12 and the valve seat 16 becomes large, and the flow path area increases. increases, and the amount of water discharged can be increased.

Therefore, the user can easily obtain the desired water discharge amount.

Next, FIG. 3 shows a second embodiment of the water faucet according to the present invention, which differs from the first embodiment described above in that the lower end opening of the lower part of the lower valve case 6 is closed, and the pressure chamber 26 and the water inlet are closed. The difference is that the valve body 12 is provided with a small passage that communicates with the third side. In the following explanation with reference to the drawings (the same symbols are used for the parts corresponding to those in Fig. 1), 51 is the upper valve case 5.
A lower valve case is integrally connected to the lower end and has an inner circumferential surface formed as a sliding surface for the valve body 52, 53 is a water inflow opening provided with a strainer 54 on the outside, and 55 is built in the valve case 51 and has a valve body 52. 56 is an annular hollow part provided in the valve body 52, 57 is a small passage that communicates the annular hollow part with the water inlet 3 side, and the lower valve case 51
The hollow portion surrounded by the valve body 52 is substantially formed as a pressure chamber 58.

Note that the handle 14 of the present invention is integrally fixed to the first push rod 7, but by rotatably attaching the handle 14 to the upper valve case 5 and rotating the handle 14, the handle 14 can be attached to the first push rod 7. 7 may be pushed and moved.

The water faucet according to the present invention can achieve the following effects by having the above configuration.

(1) The second push rod is screwed onto the first push rod, and the moving stroke of the valve body relative to the valve seat can be variably adjusted by moving the second push rod back and forth, so the amount of water to be spouted can be easily adjusted, and the required amount can be adjusted. You can save water by not discharging more water.

(2) Since the valve body and the first and second push rods are formed separately and are separated from each other, the movement of the valve body is not hindered during the valve closing operation, and the valve is reliably closed.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a first embodiment of the faucet according to the present invention, Fig. 2 is a plan view of a pressure reducing plate having a small passage, and Fig. 3 is a side view showing a second embodiment of the faucet. The sectional view and FIG. 4 are partially cutaway side views showing an example of a conventional self-closing faucet. DESCRIPTION OF SYMBOLS 1... Faucet main body, 1a... Opening, 1b... Fitting part, 1c... Partition wall, 3... Water inlet, 4... Water outlet, 7... First push rod, 8... Elastic member, 9...
... Second push rod, 12, 52 ... Valve body, 14 ... Handle, 16 ... Valve seat, 18 ... Outflow opening, 2
4,53...Inflow opening, 26,58...Pressure chamber,
57...Small passage, A...Valve case.

Claims (1)

[Claims] 1. A faucet main body having a fitting part in a partition wall provided between a water inlet, a water outlet, and the two ports, and an opening in an outer wall coaxial with the fitting part, and inserting the opening and the fitting part into the faucet. A cylindrical valve case attached to the main body and having an inflow opening, an outflow opening, and a valve seat between the two openings, sliding on the inner peripheral surface of the valve case, the upper surface side corresponds to the primary side of the valve seat, and the lower surface A valve body that forms a pressure chamber together with the valve case on the side, a small passage connecting the pressure chamber and the water inlet side of the faucet body, and a valve body that is movable in the axial direction into the valve case on the secondary side of the valve seat. a first push rod attached and formed in a cylindrical shape; a second push rod screwed onto the first push rod to press the valve body from the secondary side of the valve seat; an elastic member disposed between the valve case and the first push rod, a handle linked to the first push rod, and a second push rod with respect to the first push rod; The valve body and the second
A self-closing faucet characterized by being able to adjust the amount of water spouted by adjusting the distance from the push rod.