JP5583295B1 - Self-closing faucet - Google Patents

Abstract

To provide a self-closing faucet 10 including a drinking water faucet and a currant which can be reduced in cost by having a very simple structure and can be easily operated by a handicapped person or a child.
SOLUTION: A hollow mounting leg 12 connected to a water supply pipe, a valve body 13 which is liquid-tightly attached to the mounting leg 12 and has a valve seat 13a at an end thereof, and an inside of the valve body 13 A spindle 14 having a water passage 14a therein, a spring 15 interposed between the spindle 14 and the valve body 13, and an end of the spindle 14 are mounted in a liquid-tight and slidable manner. In addition, a top 16 that opens and closes at the valve seat 13a of the valve body 13 and a handle 11 that is slidably assembled to the water outlet 14b of the spindle 14 and the mounting leg 12 are provided.
[Selection] Figure 3

Description

  The present invention relates to a self-closing faucet including a drinking water faucet and a currant that discharges water and hot water by a handle operation.

  Drinking taps are mainly installed in public places such as parks and playgrounds, and are used when people using parks and playgrounds need water. This type of drinking faucet is often used in public places and is also used by people with physical disabilities and people with weak fingers, such as children. It is necessary to be able to do. Further, in such a drinking water faucet, the handle or lever may not be returned to the original position, and water may be left unloaded.

  As such a drinking tap, there are various types from an old type consisting of an upwardly directed water discharge pipe and an upper opening / closing handle to that proposed in Patent Document 1, for example. is there.

On the other hand, Karan is a well-known thing that is often installed in public baths, but when a lever is pressed, a certain amount of hot water comes out. In other words, when a certain amount of hot water has been discharged, water is automatically stopped, so-called “self-closing”, and various proposals have been made in, for example, Patent Document 2.

JP 2002-348920 A, FIG. 1, FIG. Japanese Patent No. 4745888, FIG.

  The “mixed faucet column” proposed in Patent Document 1 was made for the purpose of “providing a faucet column that can discharge hot water in addition to water in a garden or park”. As shown in FIG. 8 and FIG. 9, “a hollow column shape in which a water supply riser pipe whose lower end is connected to a water supply pipe, a hot water supply riser pipe whose lower end is connected to a hot water supply pipe, and a compatible upper pipe are incorporated in parallel. A casing and a mixing faucet provided at the upper end of the casing and connected to the upper end of the pipe for compatibility.

  With such a faucet column, “If the above-mentioned mixed faucet column is installed in a garden or park, water and hot water can be selectively selected from the mixed faucet provided at the upper end of the casing as needed. Water can be discharged and this can be used ", but if you forget to close the handle, the water will be discharged, and above all, there are two handles and the operation is complicated. .

  On the other hand, a water tap for installation in a public place such as a park or a playground is simply enough if water for human consumption comes out. It is important to be able to use it with a light force.

  On the other hand, as shown in FIG. 10, the general “curran” described in Patent Document 2 automatically closes the main valve and stops water supply when a set time has elapsed after starting shower water discharge from the shower water discharge unit. (A) a water supply channel for supplying water to the shower water discharge part, (b) a main valve seat provided on the water supply channel, and (c) seated on or separated from the main valve seat. A main valve composed of a diaphragm valve that opens and closes the water supply channel, and (d) a pressure chamber formed behind the main valve and acting on the main valve as a pressing force in the closing direction against the main valve, and (e ) An inlet small hole for communicating the primary water channel upstream of the main valve of the water supply channel with the pressure chamber, and introducing the water of the primary water channel into the pressure chamber, and (f) from the main valve of the water supply channel In addition, the secondary side water channel on the downstream side and the pressure chamber communicate with each other, and a water drainage channel as a pilot water channel for extracting water from the pressure chamber to the secondary side water channel, And a start valve as a pilot valve that opens and closes the water drainage path. The main valve is opened by opening the start valve to start water supply, and the main valve is predetermined by closing the start valve. The valve is closed after a delay and the water supply is stopped.

  However, a general self-closing type curan is subject to pressure such as tap water against "(c) main valve consisting of a diaphragm valve that opens and closes the water supply path by sitting on or leaving the main valve seat". And the mechanism for releasing the pressure is indispensable, so the entire structure must be very complicated as shown in FIG. 10 as well as a rubber called “diaphragm valve”. Because it is made of a product that changes quickly over time, maintenance within a short period is indispensable.

  Accordingly, the present inventors have made various studies on how to prevent the drinking water and hot water from being left untouched with a simple structure capable of discharging drinking water and hot water with a light operation. As a result, the present invention has been completed.

  That is, the first object of the present invention is a self-closing including a drinking water faucet and a currant that can be easily operated by a handicapped person or a child, while the cost can be reduced by a very simple structure. It is to provide a faucet 10.

  Further, the second object of the present invention is to provide a self-closing faucet 10 having a simple structure that can perform the light handle operation and has excellent durability, as well as achieving the first object. It is in.

In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the embodiments described later.
“A self-closing faucet 10 including a drinking water faucet or currant that is made to discharge water by operating the handle 11,
A hollow mounting leg 12 connected to the water supply pipe, a valve body 13 which is liquid-tightly attached to the mounting leg 12 and has a valve seat 13a at an end, and a liquid-tightness in the valve body 13 A spindle 14 having a water passage 14a therein, a spring 15 interposed between the spindle 14 and the valve body 13, and an end portion of the spindle 14 , When the spindle 14 is in its original position by the biasing force of the spring 15, the valve seat 13 a is abutted and closed, and when the spindle 14 is pushed out of the valve body 13 against the biasing force of the spring 15, the valve seat open this away from 13a, includes a frame 16 for opening and closing at the valve seat 13a of the valve body 13, a handle 11 is assembled slidably in the water discharge port 14b and the mounting leg 12 of the spindle 14
Furthermore, a pressing mechanism 20 is provided between the inner surface of the handle 11 and the spindle 14 and presses the spindle 14 against the urging force of the spring 15 when the handle 11 is rotated. The self-closing faucet 10 is provided with a rotation prevention mechanism 30 provided between the spindle 14 and the valve body 13 in order to prevent rotation of the spindle 14 pressed in this manner.
It is.

  The self-closing faucet 10 according to claim 1 discharges water or hot water only when the handle 11 is turned. When the handle 11 is released, it automatically returns to its original position. In addition, the water is also stopped and used as a drinking water faucet, a hot water currant, or a toilet faucet. The self-closing faucet 10 will be described below by taking as an example a case of using a water faucet that discharges water upward, but when used as a faucet for hot and cold water or a toilet. The water discharge is installed so that the water discharge is downward or diagonally forward.

  When the self-closing faucet 10 is in a water-stopped state, the top 16 provided at the lower end of the spindle 14 is in contact with the valve seat 13a of the valve body 13 as shown in FIG. The communication between the inside of the mounting leg 12 connected to the supply pipe and the like and the water passage 14a of the spindle 14 is blocked. For this reason, even if water or the like is supplied into the mounting leg 12, this water does not flow into the water passage 14a of the spindle 14 and is not discharged from the water outlet 14b of the spring 15. The faucet 10 is in a water stop state. In the self-closing faucet 10 in the water stop state, the spindle 14 is urged upward with respect to the valve body 13 fixed on the mounting leg 12 by the urging force of the spring 15. The top 16 provided at the lower end maintains a contact state of the valve body 13 with the valve seat 13a.

  Further, when looking at the state of the handle 11 in the water-stopped state, as shown in FIGS. 3 and 4, a metal fitting 17 is attached to the inside of the skirt portion 11 c which is the lower part of the handle 11. The drop prevention metal fitting 17 is adapted to abut against a dent prevention metal fitting 12 a attached to the outer periphery of the attachment leg 12. For this reason, since there is no fixed portion other than the contact portion between the dent prevention metal fitting 12a and the drop prevention metal fitting 17, the handle 11 is rotatable but does not move up and down, and therefore a force is exerted on the handle 11. Even if it is hung, the spindle 14 is not lowered, and the top 16 is not separated from the valve seat 13a.

  Here, when water discharge by the self-closing faucet 10 becomes necessary, the user rotates the handle 11. By rotating the handle 11, the inner surface of the handle 11 and the spindle 14 (upper ) The pressing mechanism 20 provided between the end faces operates. The operation of the pressing mechanism 20 causes the spindle 14 to move down as shown in FIG. 4 against the urging force of the spring 15. At this time, the spindle 14 is moved by the action of the rotation prevention mechanism 30. Is not rotated. As a result, the top 16 is separated from the valve seat 13a of the valve body 13, and the inside of the mounting leg 12 and the water passage 14a of the spindle 14 communicate with each other, and the water flow 40 indicated by the arrow line in FIG. 4 is generated. To do. Since the tip of the water flow 40 is a water discharge port 14b in which a water passage 14a in the spindle 14 is opened, water is discharged as shown in FIG.

  As shown in FIGS. 3 and 4, the upper end of the spindle 14 is integrally formed with a water discharge port 14 b that communicates with a water passage 14 a inside. The water discharge port 14 b is formed on the handle 11 side. It is accommodated in the water discharge window 11b formed so as to be movable up and down, and water is discharged from its tip. Since there is no need to make the space between the water outlet 14b and the water outlet window 11b liquid-tight, no seal is provided.

  The handle 11 can be rotated by a force sufficient to resist the urging force of the spring 15 and the frictional force between the dent prevention metal fitting 12a of the handle 11 and the mounting leg 12. If the handle 11 has the wing portion 11a as exemplified in the embodiment, the rotation operation can be performed more easily.

  As described above, the self-closing faucet 10 does not require two handles unlike the faucet shown in Patent Document 1, and also requires a diaphragm valve like the faucet of Patent Document 2. Since it can be “self-closed”, there are few components and the structure is simple.

  Therefore, the self-closing faucet 10 according to claim 1 has a very simple structure and can reduce the cost, and the handle 11 can be easily rotated even by a disabled person or a child. It is.

Moreover, in order to solve the said subject, the means which the invention which concerns on Claim 2 took about the self-closing faucet 10 of the said Claim 1,
“The pressing mechanism 20 is housed in the housing hole 21 and the rolling groove 22 formed in the inner surface of the handle 11 and the end surface of the spindle 14 facing the handle 11, and in the housing hole 21 and the rolling groove 22, respectively. And the expansion / contraction balls 23 for expanding / contracting the gap between the inner surface of the handle 11 and the end surface of the spindle 14 ”
It is.

  The self-closing faucet 10 according to the second aspect of the present invention embodies a pressing mechanism 20 for pushing down the spindle 14 by rotating the handle 11. The pressing mechanism 20 basically includes the handle 11. A housing hole 21 formed on the inner surface of the inner surface of the housing 14, a rolling groove 22 on the spindle 14 facing the housing hole 21, and a fully spherical expanding / contracting ball 23 to be housed between the rolling groove 22 and the housing hole 21. It is provided.

  If the pressing mechanism 20 is made concrete in this way, when the handle 11 is rotated, the expansion / contraction ball 23 stored in the storage hole 21 formed on the inner surface thereof has a lower end of the spindle 14. While abutting in the rolling groove 22 formed on the upper surface, the upper end thereof is held in the storage hole 21 and rolls. In other words, each expansion / contraction ball 23 moves with the rotation of the handle 11, but its lower end is in contact with each rolling groove 22 of the spindle 14, so that the inner surface shape of each rolling groove 22 is formed. It will roll on the accompanying “slope”. Each expansion / contraction ball 23 was at the lowermost side of the “slope” at the time when the handle 11 was turned, but as the handle 11 was turned, the “slope” was raised. Therefore, as a result, each expansion / contraction ball 23 pushes down the spindle 14 against the inner surface of the handle 11. In the meantime, the spindle 14 is not rotated by the rotation prevention mechanism 30 and is merely pushed down against the biasing force of the spring 15.

  On the contrary, when the hand is released from the handle 11, the urging force of the spring 15 is applied to the spindle 14 as an ascending force, and this urging force is converted into the rotational force of the handle 11 via the pressing mechanism 20. It will be reversed as much as it was moved and will return to its original position.

  As a result, the pressing mechanism 20 not only efficiently converts the turning force of the handle 11 to the pressing force of the spindle 14 and the urging force of the spring 14 of the spindle 14 to the returning force of the handle 11, Since the expansion / contraction ball 23 is also a perfect sphere, the contact between the inner surface of the handle 11 and the upper surface of the spindle 14 is mainly “point contact”, so that the pressing mechanism 20 is excellent in durability.

  Therefore, the self-closing faucet 10 according to claim 2 performs the same function as that according to claim 1, and can be operated lightly by the pressing mechanism 20 having a specific configuration, and also has excellent durability. It has become a thing.

Furthermore, in order to solve the said subject, the means which invention which concerns on Claim 3 took about the self-closing faucet 10 of the said Claim 1 or Claim 2,
“A rotation prevention mechanism 30 is formed in the valve body 13 in the sliding direction of the spindle 14, between the storage hole 32 formed in the side surface of the spindle 14, and between the storage hole 32 and the guide groove 32. That it is configured with the stored anti-rotation ball 33 "
It is.

  In the self-closing faucet 10 according to the third aspect, when the spindle 14 is pressed by the pressing mechanism 20 as the handle 11 is rotated, the rotation preventing mechanism 30 that prevents the spindle 14 from rotating is provided with a valve. The main body 13 includes a guide groove 31 formed in the axial direction thereof, a storage hole 32 formed in the side surface of the spindle 14, and a rotation stop ball 33 stored between the storage hole 32 and the guide groove 32. Is.

  That is, the guide groove 31 is first formed on the inner surface of the valve body 13 fixed to a supply pipe such as a water pipe as shown in FIG. The guide groove 31 is a straight line having an opening at the upper end of a valve body 13 that serves as an entrance of a rotation stop ball 33, which will be described later, and a bottom surface that serves as a stop portion of the rotation stop ball 33 at both ends. This is the same as the axial direction of the valve body 13. As shown in FIG. 6, the storage hole 32 is formed on the side surface of the spindle 14 and has a circular shape for storing a part of the rotation stop ball 33. The rotation stop ball 33 is a perfect sphere having a diameter larger than the diameter of the storage hole 32 and the width of the guide groove 31 and is incorporated in the self-closing faucet 10 as shown in FIGS. 3 and 4. In some cases, the guide groove 31 can move in the vertical direction in the figure, but the storage hole 32 can roll inside but cannot move relative to the spindle 14.

  As a result of configuring the rotation prevention mechanism 30 as described above, even if the handle 11 is rotated and the rotational force is transmitted to the spindle 14 via the pressing mechanism 20, the spindle 14 moves against the valve body 13 by this rotational force. Will not rotate. This is because the anti-rotation ball 33 constituting the rotation prevention mechanism 30 prevents the rotation of both. On the other hand, when the hand is released from the handle 11, the urging force of the spring 15 is applied to the spindle 14 as a rising force, and the spindle 14 is pushed straight up by the rotation prevention mechanism 30.

  When this rotation prevention mechanism 30 is actuated, the valve body 13 and the spindle 14 are almost engaged only by point contact by the rotation-stopping ball 33, so that the valve body 13 and the spindle 14 are damaged. The anti-rotation ball 33 itself is not worn out, so the anti-rotation mechanism 30 is highly durable. For this reason, this rotation prevention mechanism 30 also improves the durability of the self-closing faucet 10 as a whole.

  Therefore, the self-closing faucet 10 according to claim 3 exhibits the same function as that of claim 1 or 2, and even if the handle 11 is rotated by the rotation prevention mechanism 30 which is realized, 14 prevents the valve body 13 from rotating with respect to the valve main body 13, can be operated lightly, and has excellent durability.

As described above, in the present invention,
“A self-closing faucet 10 including a drinking water faucet or currant that is made to discharge water by operating the handle 11,
A hollow mounting leg 12 connected to the water supply pipe, a valve body 13 which is liquid-tightly attached to the mounting leg 12 and has a valve seat 13a at an end, and a liquid-tightness in the valve body 13 A spindle 14 having a water passage 14a therein, a spring 15 interposed between the spindle 14 and the valve body 13, and an end portion of the spindle 14 , When the spindle 14 is in its original position by the biasing force of the spring 15, the valve seat 13 a is abutted and closed, and when the spindle 14 is pushed out of the valve body 13 against the biasing force of the spring 15, the valve seat open this away from 13a, includes a frame 16 for opening and closing at the valve seat 13a of the valve body 13, a handle 11 is assembled slidably in the water discharge port 14b and the mounting leg 12 of the spindle 14
Furthermore, a pressing mechanism 20 is provided between the inner surface of the handle 11 and the spindle 14 and presses the spindle 14 against the urging force of the spring 15 when the handle 11 is rotated. The rotation prevention mechanism 30 provided between the spindle 14 and the valve body 13 is provided in order to prevent the rotation of the spindle 14 pressed in this manner.
The main feature of the structure is that it is possible to reduce the cost by using a very simple structure, and to achieve the first purpose that the handle operation can be easily performed by a handicapped person or a child. A self-closing faucet 10 including a stopper and a currant can be provided.

Moreover, about said self-closing faucet 10,
“The pressing mechanism 20 is housed in the housing hole 21 and the rolling groove 22 formed in the inner surface of the handle 11 and the end surface of the spindle 14 facing the handle 11, and in the housing hole 21 and the rolling groove 22, respectively. And the expansion / contraction balls 23 for expanding / contracting the gap between the inner surface of the handle 11 and the end surface of the spindle 14 ”
Or
“A rotation prevention mechanism 30 is formed in the valve body 13 in the sliding direction of the spindle 14, between the storage hole 32 formed in the side surface of the spindle 14, and between the storage hole 32 and the guide groove 32. That it is configured with the stored anti-rotation ball 33 "
As a result, the above-mentioned first object can be achieved, and the self-closing faucet 10 that can be operated lightly and has excellent durability can be provided with a simple structure.

It is a perspective view which shows the example which applied the self-closing water tap 10 which concerns on this invention to the drinking water tap. The self-closing water tap 10 is shown, (a) is a top view, (b) is a front view, (c) is a bottom view. It is a longitudinal cross-sectional view at the time of the water stop of the self-closing faucet 10. It is a longitudinal cross-sectional view at the time of water discharge of the self-closing faucet 10. 3 is an exploded perspective view of the self-closing faucet 10. FIG. It is the fragmentary perspective view which expanded and showed between the valve main body 13 and the spindle 14 in FIG. An example of the self-closing faucet 10 is shown, in which (a) is a perspective view of what is shown in FIG. 1, and (b) is a perspective view of an increased number of wing parts 11a. It is a perspective view which shows the technique proposed by patent document 1. FIG. It is a longitudinal cross-sectional view which shows the technique proposed by patent document 1. It is an expanded sectional view which shows the technique demonstrated by patent document 2. FIG.

  The invention according to each claim configured as described above will be described with reference to a self-closing faucet 10 which is an embodiment shown in the drawings. FIG. 1 shows a self-closing water used as a “water drinking faucet”. A plug 10 is shown. As shown in FIG. 2, the self-closing faucet 10 has a handle 11 having a wing part 11 a extending from the center to the left and right. At the upper end of the handle 11, As shown in Fig. 5, a water discharge window 11b from which drinking water is discharged is formed. Each wing part 11a pushes this to rotate the handle 11, and is slightly curved in order to make it easier for a finger to be hung or to be picked.

  As shown in FIGS. 3 and 4, the self-closing faucet 10 according to the present embodiment is assembled on the basis of the mounting leg 12 that is attached and fixed to a water supply pipe such as a water pipe, It has parts as shown in FIG. That is, the self-closing faucet 10 is a valve having a hollow mounting leg 12 connected to the water supply pipe and a valve seat 13a attached to the mounting leg 12 in a liquid-tight manner. A main body 13, a spindle 14 that is stored in the valve main body 13 in a fluid-tight and slidable manner, and has a water passage 14 a therein, and a spring 15 interposed between the spindle 14 and the valve main body 13. The top 16 attached to the end of the spindle 14 to open and close at the valve seat 13a of the valve body 13, and the handle 11 described above slidably assembled to the water outlet 14b of the spindle 14 and the mounting leg 12. It has.

  The mounting leg 12 is screwed and fixed to the supply pipe at the lower end, and the inside is hollow to allow water or hot water from the supply pipe to pass through. It is formed. As shown in FIG. 3, the flange 17 is provided with an anti-detachment fitting 17 attached to the inside of the skirt portion 11 c of the handle 11 via the seat 17 a, whereby the handle 11 is attached to the attachment leg 12. Is prevented from coming off. Further, a dent prevention metal fitting 12a is screwed around the outer periphery of the central portion of the attachment leg 12, and the dent prevention metal fitting 12a prevents the drop prevention metal fitting 17 on the handle 11 side from moving downward, whereby the attachment leg. No further depression (depression) of the handle 11 with respect to 12 is made.

  A small-diameter portion of the valve body 13 is inserted into the upper portion of the mounting leg 12 and is placed so that the lower surface of the large-diameter portion of the valve body 13 abuts on the flange described above. The valve main body 13 has a slide hole 13b in the lower part of which a lower part of a spindle 14 described later is housed and supported so as to be movable up and down, and a valve seat 13a is formed on the lower end surface. The valve seat 13a comes into contact with a piece 16 to be described later, and the communication between the water passage 14a on the spindle 14 side and the inside of the mounting leg 12 is blocked.

  As shown in FIGS. 3 and 6, the spindle 14 in which the lower part is accommodated in the sliding hole 13b of the valve body 13 has a water passage 14a at the center, and has a middle part larger in diameter than the lower part, and the middle part. The larger diameter upper part is in the shape of being stacked in order while having the water passage 14a.

As shown in FIG. 3, the large-diameter portion of the spindle 14 has the same shape as the inner surface of the top surface of the handle 11 so that the entire top surface of the handle 11 can be received stably. . A pressing mechanism 20 described later is formed between the large diameter portion of the spindle 14 and the inner surface of the top surface of the handle 11. Further, a rotation prevention mechanism 30 described later is formed between the middle portion of the spindle 14 and the inner surface of the valve body 13.

  As shown in FIGS. 3 and 4, a top 16 for opening and closing the valve body 13 at the valve seat 13 a is attached to the lower part of the spindle 14 accommodated in the sliding hole 13 b of the valve body 13. When the spindle 14 is moved upward by the biasing force of the spring 15 interposed between the middle lower surface of the spindle 14 and the upper surface of the large-diameter portion of the valve main body 13, the top 16 has a valve seat 13 a of the valve main body 13. When the spindle 14 is pushed down by the turning operation of the handle 11, the water flow 40 shown by the arrow line in FIG. 4 can be formed away from the valve seat 13a. is there.

  The upper end of the spindle 14 is integrally formed with a water discharge port 14b that communicates with a water passage 14a. The water discharge port 14b is formed in a water discharge window 11b formed on the handle 11 side. It is accommodated so that it can move up and down, and water is discharged from its tip as shown in FIG. Since there is no need to make the space between the water discharge port 14b and the water discharge window 11b liquid-tight, there is no seal.

  A well-known seal is stored between the mounting leg 12 and the valve main body 13 and between the valve main body 13 and the lower portion of the spindle 14 to make the two liquid-tight. .

  As described above, the self-closing faucet 10 described above rotates the handle 11 to push down the spindle 14 to discharge water. When the hand is released from the handle 11, the handle 11 returns to the original position and the water stops. Although possible, these operations are provided between the inner surface of the handle 11 and the spindle 14 and press the spindle 14 against the urging force of the spring 15 when the handle 11 is rotated. 20 and a rotation prevention mechanism 30 provided between the spindle 14 and the valve body 13 in order to prevent rotation of the spindle 14 pressed through the pressing mechanism 20.

  The pressing mechanism 20 may be configured by a cam and a cam surface formed between the inner surface of the upper surface of the handle 11 and the large-diameter portion of the spindle 14. In this embodiment, the inner surface of the handle 11 is used. , And a storage hole 21 and a rolling groove 22 formed in each of the end surfaces of the spindle 14 opposed thereto, and are stored in the storage hole 21 and the rolling groove 22, so that the inner surface of the handle 11 and the end surface of the spindle 14 are stored. And an expansion / contraction ball 23 that expands / contracts the gap therebetween.

  In the pressing mechanism 20, when the handle 11 is rotated, the expansion / contraction ball 23 stored in the storage hole 21 formed on the inner surface of the pressing mechanism 20 is a roller whose lower end is formed on the upper surface of the spindle 14. While abutting in the moving groove 22, the upper end thereof is held in the storage hole 21 and rolls. In other words, each expansion / contraction ball 23 moves with the rotation of the handle 11, but its lower end is in contact with each rolling groove 22 of the spindle 14, so that the inner surface shape of each rolling groove 22 is formed. It will roll on the accompanying “slope”.

Each expansion / contraction ball 23 was at the lowermost side of the “slope” at the time when the handle 11 was turned, but as the handle 11 was turned, the “slope” was raised. Therefore, as a result, each expansion / contraction ball 23 pushes down the spindle 14 against the inner surface of the handle 11. In the meantime, the spindle 14 is not rotated by the rotation prevention mechanism 30 and is merely pushed down against the biasing force of the spring 15.

  In the vicinity of each rolling groove 22, a stopper 22 a is provided at the end of the handle 11 in the rotational direction as shown in FIG. 6. The stopper 22a prevents the expansion / contraction ball 23 from rolling further, and the stop position of the handle 11 is when the rolling ball 23 comes into contact therewith.

  On the contrary, when the hand is released from the handle 11, the urging force of the spring 15 is applied to the spindle 14 as an ascending force, and this urging force is converted into the rotational force of the handle 11 via the pressing mechanism 20. It will be reversed as much as it was moved and will return to its original position.

On the other hand, the rotation prevention mechanism 30 may be constituted by a “groove” and a “projection” that engages with this, but in this embodiment, it is formed in the valve body 13 in the sliding direction of the spindle 14. The guide groove 31, the storage hole 32 formed in the side surface of the spindle 14, and the rotation stop ball 33 stored between the storage hole 32 and the guide groove 32.

  That is, first, the guide groove 31 is formed on the inner surface of the valve body 13 fixed to a supply pipe such as a water pipe as shown in FIG. The guide groove 31 is a straight line having an opening at the upper end of a valve body 13 that serves as an entrance of a rotation stop ball 33, which will be described later, and a bottom surface that serves as a stop portion of the rotation stop ball 33 at both ends. This is the same as the axial direction of the valve body 13. As shown in FIG. 6, the storage hole 32 is formed on the side surface of the spindle 14 and has a circular shape for storing a part of the rotation stop ball 33. The anti-rotation ball 33 is a perfect sphere having a diameter larger than the diameter of the storage hole 32 and the width of the guide groove 31, and is incorporated in the self-closing faucet 10 as shown in FIGS. In this case, it can move in the vertical direction in the figure with respect to the guide groove 31, but it can roll inside the storage hole 32 but cannot move relative to the spindle 14.

  In the rotation preventing mechanism 30 configured as described above, even if the handle 11 is rotated and the rotational force is transmitted to the spindle 14 via the pressing mechanism 20, the spindle 14 moves against the valve body 13 by this rotational force. Will not rotate. This is because the anti-rotation ball 33 constituting the rotation prevention mechanism 30 prevents the rotation of both. On the other hand, when the hand is released from the handle 11, the urging force of the spring 15 is applied to the spindle 14 as an upward force, and the spindle 14 is pushed straight up by the rotation prevention mechanism 30.

  When this rotation prevention mechanism 30 is actuated, the valve body 13 and the spindle 14 are almost engaged only by point contact by the rotation-stopping ball 33, so that the valve body 13 and the spindle 14 are damaged. The anti-rotation ball 33 itself is not worn out, so the anti-rotation mechanism 30 is highly durable. For this reason, this rotation prevention mechanism 30 also improves the durability of the self-closing faucet 10 as a whole.

DESCRIPTION OF SYMBOLS 10 Self-closing faucet 11 Handle 11a Wing | blade part 11b Water discharging window 11c Skirt part 12 Mounting leg 12a Recess prevention metal fitting 13 Valve main body 13a Valve seat 13b Sliding hole 14 Spindle 14a Water flow path 14b Water outlet 15 Spring 16 Top 17 Fall prevention metal fitting 17a Sheet 20 Pressing mechanism 21 Storage hole 22 Rolling groove 22a Stopper 23 Expansion / contraction ball 30 Rotation prevention mechanism 31 Guide groove 32 Storage hole 33 Anti-rotation ball 40 Water flow

Claims (3)

A self-closing faucet containing a drinking water faucet or currant that allows water to be discharged by operating the handle,
A hollow mounting leg connected to the water supply pipe, a valve body attached to the mounting leg in a liquid-tight manner and having a valve seat at an end thereof, and liquid-tight and slidable in the valve body A spindle having a water passage inside, a spring interposed between the spindle and the valve body, and attached to an end portion of the spindle, and the spindle is restored by the urging force of the spring. When the spindle is pushed out of the valve body against the urging force of the spring, it is moved away from the valve seat to open it. A top that opens and closes at the valve seat of the valve body, and the handle that is slidably assembled to the water outlet of the spindle and the mounting leg,
Furthermore, a pressing mechanism provided between the inner surface of the handle and the spindle and pressing the spindle against the urging force of the spring when the handle is rotated, and pressing via the pressing mechanism A self-closing faucet comprising a rotation prevention mechanism provided between the spindle and a valve body to prevent rotation of the spindle.   The pressing mechanism is accommodated in a storage hole and a rolling groove formed in each of the inner surface of the handle and the end surface of the spindle opposite to the inner surface of the handle, and the inner surface of the handle is accommodated in the storage hole and the rolling groove. The self-closing faucet according to claim 1, wherein the self-closing faucet is configured by an expansion / contraction ball that expands / contracts a gap between the spindle and an end face of the spindle.   A guide groove formed in the valve body in the axial direction in the valve body; a storage hole formed in a side surface of the spindle; a rotation stop ball housed between the storage hole and the guide groove; The self-closing faucet according to claim 1 or 2, characterized by comprising:

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