JP2000352100A - Stop cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stop cock capable of preventing uniformity of opening by the degree of operation quantity of an operating person. SOLUTION: This stop cock 1 has an inlet port 20 and an outlet port 21 in a housing 2, and a valve mechanism 4 capable of stopping water between the inlet port 20 and the outlet port 21, and it is connected to a flush toilet requiring water pressure adjustment or flow adjustment. The valve mechanism 4 is capable of intermittently changing flow of water discharged from the outlet port 21 between 0% and 100%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a water stopcock connected to sanitary equipment.

[0002]

2. Description of the Related Art A water stopcock has a water inlet port and a water outlet port in a housing, and a valve mechanism capable of stopping water between the water inlet port and the water outlet port. The water inlet port is connected to a water supply pipe such as a water pipe, and the water outlet port is connected to a sanitary device such as a flush toilet. The valve mechanism of a general water stopcock includes a valve port that connects the water inlet port and the water outlet port, and a plug that integrally includes a valve body that opens and closes the valve port. The stopper bar has a male screw portion that is screwed into a female screw portion formed in the housing.

When the installation work of the sanitary equipment is completed and water supply to the sanitary equipment is started, a water stopcock is opened. That is, the male screw portion of the plug is screwed into the female screw portion of the housing by the rotation operation of the user, whereby the plug having the valve body is retracted to open the valve port. As a result, the water supplied from the water supply pipe is discharged from the water discharge port through the water inlet port and the valve port of the water stopcock, and is sent to the sanitary equipment.

On the other hand, when stopping the water supply to the sanitary equipment, the water stopcock is closed. That is, the male screw portion of the plug is screwed in the opposite direction to the female screw portion by the rotation operation of the user, whereby the plug having the valve body is advanced to close the valve port. As a result, there is no communication between the water inlet port and the water outlet port of the water stopcock, and the supply of water to the sanitary equipment is stopped.

[0005]

However, in the above-mentioned conventional water stopcock, the tap rod having the valve element is moved forward or backward by screwing forward and backward between the female screw portion and the male screw portion which is screwed to the female screw portion, so that the water inlet port can be connected to the water inlet port. Since the valve mechanism that opens and closes the valve port between the water outlet port is adopted, when the minimum flow rate of water discharged from the water outlet port is 0% (closed) and the maximum flow rate is 100% (open), The flow rate of water discharged from the port is 0% (closed) to 100
It changes steplessly within the range of% (open). For this reason,
The degree of opening and closing of the stopcock may vary depending on the amount of operation of the person who operates the opening and closing of the stopcock.

For example, even if it is intended to open the water stopcock so that the flow rate of the water discharged from the water discharge port becomes 100%, the operation amount of the valve mechanism is actually insufficient and the flow rate is smaller than the target water flow rate. Of water may be discharged. In this case, in the sanitary equipment, the target pressure or the target amount of water is not supplied, and for example, in a flush toilet, insufficient washing occurs.

On the other hand, even if the water stopcock is intended to be closed so that the flow rate of the water discharged from the water discharge port becomes 0%,
Actually, the operation amount of the valve mechanism may be insufficient, and a very small amount of water may be discharged. In this case, when the sanitary equipment is repaired, water overflows on the floor or the like. The present invention has been made in view of the above-described circumstances, and a problem to be solved is to provide a water stopcock that can prevent the degree of opening and closing from being varied depending on the amount of operation of a person who performs opening and closing operations. And

[0008]

SUMMARY OF THE INVENTION A water stopcock according to the present invention has a water inlet port and a water outlet port in a housing and a valve mechanism capable of stopping water between the water inlet port and the water outlet port. In a water stopcock connected to sanitary equipment requiring pressure adjustment or flow rate adjustment, the valve mechanism is capable of intermittently switching the flow rate of water discharged from the water outlet port between 0% and 100%. Features.

Typical examples of sanitary equipment requiring water pressure or flow rate adjustment include a flush toilet, a flush toilet, a wash facility, a shower facility, and a bath facility, which are flush toilets or flush toilets. . A flush toilet that does not have a toilet flush tank can be used. In addition, 0%
Means that the water stopcock is fully closed, and 100% means that the water stopcock is fully opened.

In the water stopcock of the present invention, the valve mechanism can intermittently switch the flow rate of the water discharged from the water discharge port between 0% and 100%. The flow rate of the supplied water naturally becomes 100%. Therefore, when using the sanitary equipment, it is possible to surely supply the target amount of water to the sanitary equipment. For this reason, in the sanitary equipment, the target pressure or the target flow rate of water is reliably supplied, and for example, even in a flush toilet, insufficient washing does not occur.

On the other hand, when the water stopcock is closed, the flow rate of water discharged from the water discharge port naturally becomes 0%. Therefore, it is possible to prevent unnecessary water from being sent to the sanitary equipment. Therefore, when the sanitary equipment is repaired, water does not overflow to the floor or the like. Therefore, in the water stopcock of the present invention, unlike the conventional water stopcock in which the flow rate discharged from the water outlet port changes steplessly, it is possible to prevent the degree of opening / closing from being varied depending on the operation amount of the person opening / closing. Can be.

According to a preferred embodiment of the water stopcock of the present invention,
A configuration in which the flow rate is switched based on the input of the user of the sanitary equipment can be adopted. As the input by the user, in addition to the direct input by the user's hand, for example, an input based on detection of the user entering and leaving the toilet room, an input based on the user's seating on and off the toilet seat, and the like can be adopted. With the latter input, it is possible to reliably prevent water leakage when not in use.

Further, according to a preferred embodiment of the water stopcock of the present invention, the valve mechanism controls the flow rate of water discharged from the water outlet port to zero.
0% to 10% in addition to intermittent switching between% and 100%
A configuration that can be switched intermittently at an intermediate flow rate of 0% can be adopted. Intermediate flow rates are between 0% and 100
% Means any flow rate. Since the water in the flowing state is hard to freeze even at the freezing temperature, the flow rate can be set as an intermediate flow rate while maintaining the flowing state and preventing freezing of the water. As a flow rate that can prevent such freezing, a flow rate of, for example, about 0.5 to 20% of the 100% flow rate can be set. In this way, if water at an intermediate flow rate is constantly flowed through the water stopcock, it is possible to prevent the water supplied to the sanitary equipment from freezing even in a cold region or in a cold season. Does not hinder

[0014] Preferably, the water stopcock of the present invention is displayed with a step indicating a flow rate to be switched. If displayed, the switching stage can be easily confirmed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. As shown in FIG. 1, a water stopcock 1 of the present embodiment includes a housing 2 having a water inlet port 20 and a water outlet port 21 formed in a direction crossing the water inlet port 20, and a water stop port 1 between the water inlet port 20 and the water outlet port 21. And a valve mechanism 4 capable of stopping water as a main component.

A female thread 20 is provided on the inner periphery of the water inlet port 20.
a is formed. The water stopcock 1 is attached to the water supply pipe 9 by screwing the female screw part 20a to the male screw part on the outer peripheral part of the water supply pipe 9 (see FIG. 10) which is a water pipe.
In the housing 2, between the water inlet port 20 and the water outlet port 21, a valve chamber 25 communicating with both is formed. Note that a cylindrical portion 24 having a through hole 23 is formed coaxially on the opposite side of the water inlet port 20 in the housing 2. The valve mechanism 4 is built in the valve chamber 25 and has a hollow chamber 40a.
And has a spherically-shaped, rollable valve element 40 having the following shape. Valve body 4
Numeral 0 is held by the valve holder 26 of the valve chamber 25 so as to be rotatable about the axis P1 of the water inlet port 20. The valve element 40 includes a first main opening 41 having a large opening area facing the water inlet port 20, a second main opening 42 having an opening area approximately equal to the first main opening 41, and a first main opening 41 and a second main opening 41. Sub-opening 43 having an opening area smaller than main opening 42
And The first main opening 41, the second main opening 42, and the sub opening 43 penetrate along the radial direction of the valve body 40 so as to cross each other, and communicate with the hollow chamber 40a. Valve body 4
Even if 0 rotates around the axis P1, the first main opening 41 always faces the water inlet port 20.

The housing 2 is provided with an operation section 5 operated to open and close the valve element 40. Operation unit 5
A rotary shaft 50 held in the through hole 23 of the housing 2 so as to be rotatable about the axis P1 of the water inlet port 20;
An operation knob 52 rotated by a user and an urging spring 54 functioning as urging means are provided. Rotary axis 5
An O-ring 51 is interposed between the inner shaft 0 and the inner wall surface of the through hole 23 to prevent water leakage between the rotating shaft 50 and the housing 2.

The operation knob 52 has a ring portion 52a provided substantially coaxially with the housing 2 and a contact wall portion 52c which projects inward from the ring portion 52a and abuts on the axial end surface of the cylindrical portion 24 of the housing 2. With As shown in FIG. 2, a handle portion 52d is protruded from the ring portion 52a of the operation knob 52 in consideration of operability. The handle portion 52d protrudes outward in the radial direction of the operation knob 52.

As shown in FIG. 3, the surface 5 of the operation knob 52
2e displays the characters "open" indicating the use of the water stopcock 1 in the open mode, and the characters "closed" indicating the use of the water stopcock 1 in the closed mode. The letters "flow" indicating that the stopper 1 is used in the flow mode are displayed. The open mode means that the flow rate of water discharged from the water outlet port 21 of the water stopcock 1 is set to 100%.
The closed mode means that the flow rate of water discharged from the water outlet port 21 is set to 0%. The flow mode means that the flow rate of water discharged from the water discharge port 21 is set to an intermediate flow rate (for example, 2 to 5%) of 0 to 100%.

As shown in FIG. 1, the mounting portion 50k at the tip of the rotary shaft 50 is fitted and mounted in the hole of the valve body 40, and both rotate integrally. A screw hole 50r is formed in the shaft end surface of the rotating shaft 50. The operation knob 52 is rotatable with respect to the housing 2 by inserting the mounting screw 56 into the through hole of the contact wall portion 52c of the operation knob 52 and attaching the male screw portion at the tip of the mounting screw 56 to the screw hole 50r. Will be retained.

The urging spring 54 is provided with a seat plate 57 of the mounting screw 56.
And the contact wall 52c of the operation knob 52. Thereby, the biasing spring 54 biases the operation knob 52 toward the housing 2, that is, in the direction of arrow X1. When a force in the direction of arrow X2 acts on the operation knob 52, the biasing spring 54 elastically contracts, and the operation knob 52 can be retracted in the direction away from the housing 2, that is, in the direction of arrow X2.

As shown in FIG. 1, of the housing 2,
An engaged portion 58 is formed on a portion of the operation knob 52 facing the rear surface 52f. As shown in FIG. 2, a first engagement portion 61 and a second engagement portion 6
The second and third engagement portions 63 are recessed at predetermined intervals along the circumferential direction of the operation knob 52. The first engagement portion 61 is used in the open mode of the water stopcock 1. The second engagement portion 62 is used in the closed mode of the water stopcock 1. The third engagement portion 63 is used in the flow mode of the water stopcock 1.

FIGS. 4 and 5 show the vicinity of the engaged portion 58 formed on the housing 2. As shown in FIGS. 4 and 5,
The engaged portion 58 has a convex shape and has a gentle arc-shaped convex surface 58c. On the other hand, the first engaging portion 61 has a concave shape, and is formed by a gentle arc-shaped concave surface 61c. As shown in FIG. 4, when the user rotates the operation knob 52 in the circumferential direction, that is, the direction of the arrow S <b> 1, the first engagement portion 61 is detachably engaged with the engaged portion 58. In this state, since the urging spring 54 urges the operation knob 52 in the direction of arrow X1, the state of engagement between the first engaging portion 61 and the engaged portion 58 is favorably maintained.

As shown in FIG. 5, the user operates the operation knob 52.
Is further rotated, the first engaging portion 61 becomes the engaged portion 58.
And the engagement is released. In this state, the biasing spring 54 is elastically contracted, and the operation knob 52 can be retracted in a direction away from the housing 2, that is, in the direction of the arrow X <b> 2, so that the engagement between the first engagement portion 61 and the engaged portion 58 can be released. Well done.

Although not shown, the second engaging portion 62 and the third engaging portion 63 have the same structure as the first engaging portion 61. Accordingly, when the operation knob 52 is rotated in the closed mode, as shown in FIG.
Are removably engaged with the engaged portion 58. Further, in the flow mode, as shown in FIG. 9, the third engaging portion 63 is detachably engaged with the engaged portion 58.

As shown in FIG. 10, the water supply pipe 9 and the water stopcock 1
Flush toilet 7 as a sanitary device connected via
The toilet bowl 70 includes a toilet bowl 70, a toilet seat 71 and a toilet lid 72 that are swingably provided above the toilet bowl 70. This flush toilet 7
Does not have a toilet flush tank. When installing the flush toilet 7, first, the flush toilet 7 is attached to the floor of the toilet room, and water is stopped in the water supply pipe 9 in a state in which a main plug of the water supply pipe 9 provided on the room wall side is closed. Attach stopper 1. In this case, the female screw portion 20 a of the housing 2 of the water stopcock 1 is screwed to the male screw portion of the water pipe 9 at the distal end.
In addition, one end 8k of the flexible hose 8 is connected to the water outlet port 21 of the water stopcock 1 via the cap nut 82, and the other end 8h of the flexible hose 8 is connected to the water receiving portion on the back 7i side of the flush toilet 7. Connecting. At this time, the stopcock 1 is set to the closed mode.

When the installation work is completed and water is to be supplied to the flush toilet 7, the main cock of the water supply pipe 9 is opened and the operation knob 52 of the water stopcock 1 is rotated to set the mode to the open mode. In the open mode, the first engagement portion 61 of the operation knob 52 engages with the engaged portion 58, as shown in FIG. In this state, as shown in FIG. 6, the first main opening 41 of the valve body 40 faces the water inlet port 20 and the second main opening 42 of the valve body 40 faces the water outlet port 21. , The water inlet port 20 and the water outlet port 21 communicate with each other. Therefore, water supplied from the water supply pipe 9 is discharged from the water outlet port 21 through the water inlet port 20 of the water stopcock 1, the first main opening 41 and the second main opening 42 of the valve body 40, and the flexible hose 8 is discharged. After that, it is sent to the flush toilet 7. Therefore, if the user operates a washing switch (not shown) mounted on the flush toilet 7, the toilet bowl 70 and the like are washed with the water supplied from the water supply pipe 9.

When the flush toilet 7 is to be repaired, it is necessary to stop supplying water to the flush toilet 7. Therefore, as shown in FIG.
The second engaging portion 62 is engaged with the engaged portion 58 by rotating the 2d to make it horizontal. In this state, as shown in FIG. 1, although the first main opening 41 faces the water inlet port 20, since the valve wall 40 c of the valve element 40 closes the water outlet port 21, the water inlet port 20 and the water outlet port 21 are closed. Becomes a non-communication state. For this reason, the water supplied from the water supply pipe 9 is not discharged from the water outflow port 21, and the water supply to the flush toilet 7 is stopped.

In a cold region, water may freeze in cold weather. For this reason, in order to prevent freezing of water, the user rotates the operation unit 5 to switch the operation knob 52 to the flow mode. In the flow mode, as shown in FIG.
The engaging portion 63 is engaged with the engaged portion 58. In this state, as shown in FIG. 8, the valve body 40 rotates about the axis P <b> 1, and the sub opening 43 faces the water discharge port 21. Note that the second main opening 42 is not shown in FIG. 8 because it faces the near side of the paper surface of FIG. In this flow mode, the water inlet port 20, the sub-opening 43, and the water outlet port 21 are in communication with each other, so that the water supplied from the water supply pipe 9 passes through the water inlet port 20, the sub-opening 43 of the valve body 40, and the water outlet port 2
1 is discharged. Therefore, if the user operates a flow switch (not shown) mounted on the flush toilet 7, a small amount of water supplied from the water supply pipe 9 is constantly discharged. Thus, in this flow mode, water can be prevented from freezing upstream of the water inlet port 20, between the water inlet port 20 and the water outlet port 21, and downstream of the water outlet port 21.

To release the flow mode and return to the open mode, the user only has to rotate the operation knob 52 of the operation unit 5 to set the open mode again. As described above, in the water stopcock 1 of the present embodiment, the valve mechanism 4 can intermittently switch the flow rate of the water discharged from the water outlet port 21 between 0% and 100%. Therefore, when water is supplied from the water stopcock 1 to the flush toilet 7, if the water stopcock 1 is set to the open mode, the flow rate discharged from the water discharge port 21 naturally becomes 100%. Therefore, when the flush toilet 7 is used, a target water pressure or a target water amount can be obtained in the flush toilet 7. For this reason, in the flush toilet 7, water at the target pressure or the target flow rate is reliably supplied, and there is no shortage of flushing.

On the other hand, when the supply of water to the flush toilet 7 is stopped, if the water stopcock 1 is set to the closed mode, the flow discharged from the water discharge port 21 naturally becomes 0%. Therefore, it is possible to prevent unnecessary water from being supplied to the flush toilet 7 side. Therefore, when the flush toilet 7 is repaired or the like, water does not overflow onto the floor or the like. Therefore, in the water stopcock 1 of the present embodiment, unlike the conventional water stopcock in which the flow rate discharged from the water outlet port 21 changes steplessly, the water stoppage of the water stopcock 1 depends on the operation amount of the person who opens and closes. Variations in the degree of opening and closing can be eliminated.

In the water stopcock 1 of the present embodiment, the valve mechanism 4 intermittently switches the flow rate of the water discharged from the water outlet port 21 between a closed mode of 0% and an open mode of 100%. Alternatively, it can be switched to a flow mode, which is an intermediate flow rate between 0% and 100%. If the flow mode is set in this manner, water can be discharged little by little from the water outlet port 21, so that freezing of water during cold weather can be prevented.

Further, in the water stopcock 1 of the present embodiment, since the stage indicating the flow rate to be switched is displayed on the water stopcock 1, the user can check how much the flow rate flows, and can operate it erroneously. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a water stopcock showing a state in which a flow rate of water discharged from a water outlet port is 0%.

FIG. 2 is an end view of an operation knob showing a state where the flow rate of water discharged from a water outlet port is switched to 0%.

FIG. 3 is an end view of an operation knob of the operation unit.

FIG. 4 is a cross-sectional view illustrating a state in which a first engagement portion is engaged with an engaged portion.

FIG. 5 is a cross-sectional view showing a state in which a first engaging portion is disengaged from an engaged portion.

FIG. 6: The flow rate of water discharged from the water outlet port is 100%
It is sectional drawing of the water stopcock which shows the state switched so that it might become.

FIG. 7: Flow rate of water discharged from a water outlet port is 100%
FIG. 7 is an end view of an operation knob showing a state where the operation knob has been switched so that

FIG. 8 is a cross-sectional view of the water stopcock showing a state where the flow rate of water discharged from the water outlet port has been switched to an intermediate value.

FIG. 9 is an end view of the operation knob showing a state where the flow rate of water discharged from the water outlet port is switched to an intermediate value.

FIG. 10 is a perspective view of a flush toilet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Water stopcock 2 ... Housing 20 ... Water inlet port 21 ... Water outflow port 4 ... Valve mechanism 40 ... Valve body 5 ... Operating part 7 ... Rinse toilet (sanitary device)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Ito 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Yasuhiro Shirai 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Inax Corporation (72) Inventor Hidefumi Toyoyoshi 5-1-1 Koiehoncho, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Katsunori 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Shoichi Nakamura 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Yutaka Mizutani 5-1-1 Koiehonmachi, Tokoname-city, Aichi Prefecture Inax Corporation (72) Inventor Jun Ito Aichi Prefecture 5-1-1 Koiehoncho, Tokoname-shi F-term (reference) in Inax Corporation 2D039 CA04 CB01 3B155 AA0 0

Claims (5)

[Claims] 1. A sanitary device having a water inlet port and a water outlet port in a housing, a valve mechanism capable of stopping water between the water inlet port and the water outlet port, and requiring water pressure adjustment or flow rate adjustment. In the water stopcock to be connected, the valve mechanism is capable of intermittently switching the flow rate of water discharged from the water outlet port between 0% and 100%. 2. The water stopcock according to claim 1, wherein the switch is switchable based on an input of a user of the sanitary equipment. 3. The water stopcock according to claim 1, wherein the sanitary equipment is a flush toilet having no toilet flush tank. 4. The valve mechanism can intermittently switch the flow rate of water discharged from the water discharge port between 0% and 100%, and can also switch intermittently between 0% and 100%. The water stopcock according to claim 1, 2 or 3, wherein: 5. The stopcock according to claim 1, wherein a step indicating a flow rate to be switched is displayed.