JPS58146771A - Water supply tap valve - Google Patents

Abstract

PURPOSE:To make it possible to open and close a water supply tap without using a human hand, by separatably arranging, in an inverse-conical shape valve seat, an inverse-conical shape valve element which is displaciable in the axial direction of the valve seat, and by providing such an arrangement that the valve element is separated from the valve seat by performing a foot pedal or the like through a wire or a link mechanism thereby the tap is opened. CONSTITUTION:Upon no water being used, an inverse conical shape valve element 3 is depressed by water pressure applied to the top surface thereof, and is abutted against the internal surface of a housing 1 which is formed as a valve seat 2. Upon water being used, the right end 10a of a lever 10 is lifted up through a wire by pressing a pedal 14 with a human foot so that the lever 10 is swung clockwise about a fulcrum 13. Therefore, a slidable cylindrical member 6 is displaced upward within a cylinder 7 by means of a shaft rod 8 pivotally attached to the right end of the lever 10. Thereby, the valve element 3 is pulled up by means of a link rod 5 for opening the valve. Water supply may be stopped only by releasing the pedal 14, and at this time the valve element 14 is pressed against the valve seat 2 by water pressure so that the valve is closed.

Description

[Detailed description of the invention] The present invention relates to a water faucet valve.

Conventionally, tap water has been turned on and off using a rotary cock provided upstream of a faucet. Manual operation is required to operate this cock valve each time.
For example, it is not only impossible to control the outflow and water stop of water while washing items, but it is also undesirable from a hygienic point of view, as it is difficult to open the valve with unclean hands and then close the valve with clean hands. It's not a thing. However, there are also known faucet valves called sanitary valves that are installed at the outlet of the faucet and allow water to flow out by simply lifting the valve stem that protrudes downward by hand. For example, Used in public toilets, etc. However, this kind of valve is limited by the period of water outflow,
The valve element must be held in the raised position by hand;
Therefore, there is an inconvenience in that the valve stem must be supported in an upward position while washing hands.

In any case, faucet valves of the type described above unavoidably require manual operation.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a water faucet valve that allows the user to easily control the outflow and shutoff of tap water using his/her foot, for example, without relying on the user's hands.

For the above purpose, the present invention provides a valve housing forming a faucet communicating with a water pipe, an inverted truncated conical valve seat formed in the valve housing, and an axis of the valve seat with respect to the valve seat. A valve element that is movable in the direction, has a circular cross section, has a peripheral wall portion that closely fits the valve seat, and has a surface that receives water pressure on the water pipe side, and the valve element. a link having one end pivotally connected to the surface of the housing, one end connected to the other end of the link within the housing, and the other end protruding to the outside of the housing, and the link is rotatably attached to the housing. The valve element is provided with a lever and a sealing means (a, 7) provided at a connecting portion between the other end of the link and one end of the lever, and the valve element is operated by operating the end protruding to the outside of the lever. A water faucet valve is proposed that is movable relative to the valve seat.

According to the faucet valve of the present invention, it is possible to stop the water and control the flow of water with one's feet while washing articles, and it is not only convenient for use in factories, cafeterias, etc. Since there is no need to operate the valve in the room, it is preferable from a hygienic point of view, and can be of great benefit when used in hospitals, schools, public toilets, etc.

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, which shows a faucet valve according to a first embodiment of the invention in longitudinal section at 111°, the reference numeral l designates a valve housing having a substantially cylindrical outer surface; An inverted truncated conical inner wall is formed on the inner surface of the valve housing, and serves as a valve seat 2. Inside the housing, a valve element 3 having a truncated conical shape corresponding to the truncated conical shape of the valve seat 2 is arranged to be movable up and down. When the valve element 3 moves downward and fits into the valve seat 2, the valve closes, and when it moves upward, water flows out through the gap between the valve element 3 and the valve seat. The valve element 3 has a large circular pressure-receiving surface on the top, and is normally pressed downward by the water pressure of tap water, comes into contact with the valve seat 2 under water pressure, and is in a water-stop state. . A pivot point number is fixedly attached to the center of the circular top surface of the valve element 3, and the lower end of the operating link 5 is rotatably attached by the pivot attachment member 4. The upper end of the link 5 is swingably connected to the sliding cylindrical body 6. The sliding cylinder 6 is accommodated so as to be axially slidable in a guide cylinder 7 which is preferably formed integrally with the inner wall of the top of the valve housing 1 . A shaft 8 is fixed concentrically to the top of the sliding cylindrical body 6, and the shaft 8 is pivotally connected to one end of a lever 10 via a laterally projecting pin 9. As is clear from FIG. 1, a vertical slit 11 is formed in the wall of the valve housing 1 at the location of the guide cylinder 7, and the lever 1o is located at the same location as the lever 1o. 11 and is pivotally connected to an ear 12 formed on the outer wall of the valve housing 1 by means of a pin 13. The outer end 10a of the lever 10 is connected via any suitable link or cord to, for example, a foot pedal 14, which can be provided, for example, on the floor, and can be operated by stepping on the foot pedal with a foot or the like. It is now possible to do so. In addition,
In FIG. 1, reference numerals 1.delta. and 16 indicate Q-IJ seals attached to annular grooves formed in the inner wall of the guide cylinder duff, which serve to prevent water from leaking from these locations. In addition, as shown by the reference numeral 1, a deformable annular valve element abutting part made of a suitable material is provided on the inner surface of the valve seat 2, and the valve element is completely prevented from leaking when the water is turned off at the water stop position of the faucet valve. can be expected. Note that the faucet valve can be connected to a water pipe via a threaded portion or the like provided at the top of the faucet valve.

Next, the operation or operation will be explained. As already mentioned, normally, when the water pressure is applied to the top surface of the valve element 3, the valve element 3 comes into contact with the inner wall of the housing 1, that is, the valve seat 2, and moves to a position where water is blocked from flowing out, that is, a water stop position. It is in. If you want to dispense water, press the pedal 14 with your foot. Then, the right end 10a of the lever 10 is pulled down, the lever 1o swings clockwise around the fulcrum 13, and its left end is displaced upward, causing the shaft rod 8 pivoted to the left end, and therefore also A sliding cylinder 6 fixed thereto is displaced upwards within the cylinder 1. As a result, the valve element 3 is pulled upward against the water pressure via the link rod 5, and if a gap or abutment part 17 is provided between the outer peripheral wall of the valve element and the valve seat 2. can flow out through the gap between it and the valve element 3. To shut off the water, it is sufficient to simply remove the foot from the pedal 14, and the valve element 3 is brought into close contact with the valve seat 2 or the contact portion 17 by water pressure, thereby blocking the outflow of water.

As is clear from the above description, the faucet valve of the present invention can be operated without using hands, and is not only convenient for washing items, but also eliminates the need to close the faucet with hands once washed. It is very hygienic because there is no such thing. Note that if you want to keep the water flowing out even after you take your foot off, you can easily move the lever 1o to the outflow position (the position where the outer end 10a of the lever 10 is pressed down) using an appropriate latch means, for example. It can be removably locked to.

FIG. 2 shows another embodiment of the invention in a partial longitudinal section.

The faucet valve according to this embodiment differs from that of FIG. 1 in the following points. That is, even if the pedal 14 is released, a means is provided which has two functions: maintaining the outflow of water and adjusting the amount of outflow.

Referring to FIG. 2, a through hole 21 with an appropriate inner diameter is formed in a thick part of the wall of the valve housing l in a direction perpendicular to the direction of displacement of the valve element 3. This through hole is shaped like an inverted truncated cone and opens into the valve housing in the form of a vertically elongated slot at a point where it intersects with the inner wall 2 of the muzzle in a tangential relationship. A shaft rod 22 having a diameter slightly smaller than that of the hole is rotatably inserted into the hole 21, and at least one end of this shaft rod 22 projects outward from the housing. is fixedly installed. Further, a sector-shaped cam 24 is integrally formed at a portion of the shaft 22 corresponding to the slot-shaped opening, and the width of this cam is selected so that it can be moved in and out of the slot-shaped opening. . Also, at the location of this slot opening, 7
1 A groove 25 is formed in the housing wall 1 for accommodating a sector-shaped cam 24, and normally the cam 24 is placed completely within this groove 25 and in a position where it does not protrude from the slot-shaped opening. be. This position can be adjusted using the operating stick 23
It can be easily set by rotating.

Next, to explain the operation, when water is flowing, as described above, when the pedal 14 is depressed with the foot, the valve element 8 is separated from the valve seat 2 and water flows out. If you want to maintain this flowing water state,
In other words, if you want the water to continue flowing even after you take your foot off the pedal 14, rotate the shaft 22 in operation 1s23, project the sector-shaped cam 24 into the valve nozzle, and release the valve element 3 in the outflow position. (position shown in Figure 2).

The cam 24 then acts as a stopper, so that even if the foot is removed from the pedal 14, the valve element 3 remains in the valve seat 2 or 17.
, the gap between the valve element 2 and the valve seat remains intact and water can continuously flow out. Further, the cam 24 has a sector shape and its height increases continuously from zero, so by rotating the shaft 22 accordingly, the sector-shaped cam 24 can be connected to the valve element 3. The amount of water flowing can be adjusted by adjusting the gap between the valve seat 2 or 17. Note that the shaft rod 22 can be sealed using, for example, an O-ring seal. However, since the slot-shaped opening is formed in the valve seat and is closed by the valve element 3 when water is cut off, , there is little possibility of leakage and therefore the use of Q-IJ seals etc. may be unnecessary.

As is clear from the above description, the faucet valve according to the present invention comprises:
It not only has a simple structure and can be operated without using hands, but also
It is very convenient because it can maintain the water flow continuously and adjust the flow rate, and it is also easy to install. Therefore, the faucet valve of the present invention is extremely simple and convenient to use for washing articles in factories, cafeterias, etc., and also in places where hygienic cleanliness is desired, such as hospitals,
Suitable for use in schools, school lunch facilities, restaurants, public toilets, etc.

Note that the present invention is not limited to the illustrated embodiment. Numerous variations and modifications are possible within the scope of the invention. For example, instead of having a conical shape, the valve element 3 may have a hemispherical shape. Further, it is also possible to employ another known structure as a link mechanism for moving the valve element 3 up and down. Furthermore, in the above explanation, for convenience, the faucet valve was assumed to be arranged in a vertical position, but it goes without saying that it is also possible to install it in a horizontal position.

[Brief explanation of the drawing]

FIG. 1 is a side view, partially in section, of a faucet valve according to an embodiment of the present invention, and FIG. 2 is a partial vertical sectional view, partially showing a faucet valve according to another embodiment of the present invention. . 1... Valve housing 2... Valve seat 3... Valve element 5... Valve stem 6... Sliding cylindrical body... Guide Cylinder 10...Shi No(-14...Foot pedal 22...Axle rod 4...Cam applicant Fumio Takato [W's engraving (no changes to the contents 1) -) How to write a procedural amendment) Place-m; 2 June 24, 1980 J429 of 1980 Submitted by the Commissioner of the Japan Patent Office Shima 1) Haruki Tono1, Indication of the case Patent Application No. 26517 of 19882,
Title of the invention Water faucet valve 3, Relationship to the case of the person making the amendment Patent applicant Date of the amendment order May 7, 1982 6, Subject of the amendment Patent application and specification 6, Contents of the amendment Patent application and Written amendment to the specification (method) % formula % Indication of workability 1988 Patent Application No. 2661 F 2, title of invention Water faucet valve S, relationship with the case of the person making the amendment 4! Fraudulent applicant Address: 808-6 Higashiphiko, Kosai-cho, Nakakoma-gun, Shandong Prefecture.
Target of correction: Engraving of the contents of the correction to Zuinzu Gato (no changes to the contents)

Claims (3)

[Claims] (1) A valve housing forming a faucet connected to a water pipe, and an inverted truncated conical valve seat formed within the valve housing;
The valve seat is displaceable in the axial direction of the valve seat, has a circular cross section, and has a peripheral wall portion that closely engages with the valve seat, and has a surface receiving water pressure on the water pipe side. a valve element; a link having one end pivotally connected to the surface of the valve element;
a lever having one end connected to the other end of the link within the housing and the other end protruding outside the housing, and rotatably attached to the housing; and the other end of the link and one end of the lever. Sealing means (
7), wherein the valve element is movable relative to the valve seat by operating the externally protruding end of the lever. (2) A circular hole tangentially touching the valve seat is provided in the wall of the valve housing substantially perpendicular to the displacement direction of the valve element, and a shaft rod is rotatably inserted into the hole and attached to the valve seat. A patent in which a cam portion is provided on the shaft rod at a contacting position, the cam portion is capable of protruding into the interior of the housing, and the cam portion holds the valve element in the open position by rotating the shaft accordingly. A water faucet valve according to claim 1. (3) The water faucet valve 0 according to claim 2, wherein the cam portion is shaped like a sector and its height is continuously changed, thereby making it possible to adjust the amount of water flowing at the valve open position.