JP7185216B2 - Plug with depressurization mechanism - Google Patents

Description

The present invention relates to a plug with a depressurization mechanism.

Patent Document 1 discloses a drain cap as a conventional drain plug. This type of drain plug is mainly used in water faucet devices designed for cold climates. The drain plug is provided in the water supply channel of the faucet device. When the temperature is expected to drop, the water drain valve is loosened to connect the space in the water supply channel to the outside space and drain the water, which causes the internal parts to break due to the increase in internal pressure due to freezing. to prevent

JP 2017-179927 A

Draining work using a drain plug as in Patent Document 1 was complicated because it had to be performed manually. In addition, if the work is neglected or the water draining work is not performed due to unforeseen temperature drop, the faucet device may be damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a plug with a depressurization mechanism that can easily release the pressure in the primary side flow path of a water faucet device with a simple structure. This is an issue that should be resolved.

The plug with a depressurization mechanism of the present invention is
Provided in a faucet device including a faucet body in which a primary side passage through which water from a water supply pipe flows is formed,
It is detachably attached to an opening formed in the faucet main body so as to communicate with the primary flow path, and is connected to the primary flow path and the outside of the faucet main body in a state of being attached to the opening. a plug body in which a communication path communicating with the space is formed;
It is housed in the plug body in a state in which a biasing force is applied in a direction to close the communicating passage, and when the pressure in the primary side flow passage is equal to or lower than a predetermined pressure, the closed state of the communicating passage is maintained. a valve body that opens the communication path when the pressure in the primary side passage exceeds the predetermined pressure;
characterized by comprising

This plug with a depressurization mechanism has a valve body that closes the communicating passage when the pressure in the primary side passage inside the faucet body is below a predetermined pressure, and opens the communicating passage when the pressure in the primary side passage exceeds the predetermined pressure. I have it. Thereby, the pressure in the primary side passage can be automatically released. In addition, since the pressure can be automatically released, there is no need to manually remove water when the water supply pipe freezes. Therefore, the pressure in the primary side passage can be reliably released regardless of whether or not the draining work is performed.

Therefore, the plug with a depressurization mechanism of the present invention can easily release the pressure in the primary side flow path of the faucet device with a simple configuration.

The above-mentioned "predetermined pressure" is intended to be approximately 2.5 MPa to 3.5 MPa, as opposed to the water pressure of 0.05 MPa to 0.75 MPa in the normal state of general tap water.

1 is a perspective view (Part 1) showing a faucet device having a plug with a depressurization mechanism according to Embodiment 1. FIG. Fig. 2 is a perspective view (No. 2) showing a water faucet device having a plug with a depressurization mechanism according to the first embodiment; 1 is a perspective view (No. 1) showing a state in which a cover is removed in a water faucet device having a plug with a depressurization mechanism according to Embodiment 1. FIG. FIG. 10 is a perspective view (No. 2) showing a state in which the cover is removed in the water faucet device having the plug with a depressurization mechanism according to the first embodiment; 1 is a cross-sectional plan view showing a water faucet device having a plug with a depressurization mechanism according to Embodiment 1. FIG. 1 is a front cross-sectional view showing a water faucet device having a plug with a depressurization mechanism according to Embodiment 1. FIG. 1 is a cross-sectional view showing a plug with a depressurization mechanism according to Example 1. FIG. 1 is an exploded perspective view showing a plug with a depressurization mechanism according to Example 1. FIG. Fig. 10 is a front cross-sectional view showing a water faucet device having a plug with a depressurization mechanism according to Example 2; FIG. 10 is a cross-sectional view showing a plug with a depressurization mechanism according to Example 2;

A preferred embodiment of the present invention will be described.

In the plug with a depressurization mechanism of the present invention, the plug main body and the valve body are unitized, and can be detachably attached to the opening of the faucet main body. In this case, a faucet having a depressurization mechanism can be easily realized by attaching the depressurization mechanism-equipped plug to the opening. That is, a faucet having a depressurization mechanism can be realized by providing an opening on the faucet side and attaching a faucet with a depressurization mechanism to the opening. Therefore, it is not necessary to design and incorporate a depressurization mechanism for each faucet, and a faucet having a depressurization mechanism can be realized at low cost.

In the plug with a depressurization mechanism of the present invention, the plug body can be buried in the opening when attached to the opening. In this case, the faucet with a depressurization mechanism can be attached without affecting the design of the faucet device.

In the plug with a depressurization mechanism of the present invention, the plug body protrudes outward from the opening in a state of being attached to the opening, and is operated to open the water cutoff between the plug body and the faucet body. It can have an operating part for performing. In this case, since it is possible to perform water draining work by manual operation similar to the conventional one, the pressure in the primary side passage of the faucet device can be reliably released.

Next, Embodiments 1 and 2 embodying the plug with a depressurization mechanism of the present invention will be described with reference to the drawings. In the following description, the vertical and horizontal directions shown in FIGS. 6 and 9 are defined as the vertical and horizontal directions, and the front and rear directions shown in FIG. are defined and explained respectively.

<Example 1>
A tap 1 with a depressurization mechanism of Example 1 is provided in a faucet device 100 shown in FIGS. 1 to 6. FIG. The faucet device 100 is a wall-mounted mixing faucet. The faucet device 100 includes a body portion 101 , a temperature control handle 102 and a discharge handle 103 . The main body 101 has a prismatic shape whose longitudinal direction is the left-right direction, and the rear surface thereof is attached to a wall surface. The temperature control handle 102 and the discharge handle 103 are provided at the left and right ends of the main body 101, respectively.

The body portion 101 is configured such that a metal faucet body 110 is covered with a resin cover 120 . The cover 120 is composed of three members, an upper cover member 121, a lower cover member 122, and a rear cover member 123, as shown in FIGS. The upper cover member 121 and the lower cover member 122 sandwich the faucet main body 110 and the hot water supply side mounting leg 104 and the water supply side mounting leg 105 described later from above and below to cover them as a whole. The rear cover member 123 is attached to the upper cover member 121 and the lower cover member 122 so as to be inserted from behind. The rear cover member 123 is slidable in the front-rear direction with respect to the upper cover member 121 and the lower cover member 122, so that no gap is formed between the rear cover member 123 and the wall surface when the faucet device 100 is attached to the wall surface. It is configured to be adjustable. Further, the lower cover member 122 is formed with openings for exposing a cap member 107 attached to a lower outlet 110C, which will be described later, and a shower elbow 109 attached to a rear outlet 110D.

Moreover, as shown in FIGS. 2 and 6, the cover 120 has a water receiving portion 122A. The water receiving portion 122A is provided at a position corresponding to the below-described opening 113 of the lower cover member 122 . The water receiving portion 122A receives water discharged from a plug 1 with a depressurization mechanism, which will be described later.

As shown in FIG. 5, the faucet main body 110 is formed with a hot water supply port 110A, a water supply port 110B, a lower discharge port 110C, a rear discharge port 110D, and a flow path through which hot water flows by communicating these. there is Further, as shown in FIG. 5, the faucet main body 110 houses a mixing valve 111 and a switching valve 112 . The faucet main body 110 has a hot water supply port 110A and a water supply port 110B, and a lower outlet port 110C and a rear outlet port 110D, which are in communication with each other through a flow path through a mixing valve 111 and a switching valve 112 . That is, the mixing valve 111 and the switching valve 112 are provided in the water flow path formed inside the faucet main body 110 .

One ends of the hot water supply side mounting leg 104 and the water supply side mounting leg 105 are connected to the hot water supply port 110A and the water supply port 110B, respectively. The other ends of the hot water supply side mounting leg 104 and the water supply side mounting leg 105 are respectively connected to a hot water supply pipe and a water supply pipe (not shown) drawn out to the wall surface. The faucet main body 110 is supplied with hot water and cold water from a hot water supply pipe and a water supply pipe (not shown) via these hot water supply side mounting legs 104 and water supply side mounting legs 105 . The hot water supply port 110A and the water supply port 110B are each provided with a check valve 106 for preventing reverse flow to the upstream side.

The mixing valve 111 is arranged downstream of the hot water supply port 110A and the water supply port 110B. A hot water supply channel H is formed between the mixing valve 111 and the hot water supply port 110A. A water supply passage C is formed between the mixing valve 111 and the water supply port 110B. The mixing valve 111 mixes hot and cold water supplied from the hot water supply port 110A and the water supply port 110B through the hot water supply channel H and the water supply channel C. As shown in FIG. The mixing valve 111 mixes hot water and cold water at a desired ratio by operating the temperature control handle 102 .

The switching valve 112 is arranged downstream of the mixing valve 111 . A hot water flow path M is formed between the switching valve 112 and the mixing valve 111 . The switching valve 112 switches between discharging and stopping hot water supplied from the mixing valve 111 through the hot water flow path M. FIG. The switching valve 112 switches between discharging to the downstream lower discharge port 110C or the rear discharge port 110D and stopping the water by operating the discharge operation handle 103 .

The lower outlet port 110C and the rear outlet port 110D are formed downstream of the switching valve 112, respectively. An annular cap member 107 and a strainer 108 are attached to the lower discharge port 110C, and hot water is discharged directly below the faucet device 100 through these. A shower elbow 109 is attached to the rear outlet 110D. The rear outlet 110D is connected to one end of a shower hose (not shown) through a shower elbow 109, and a shower head (not shown) is attached to the other end of the shower hose. The rear outlet 110D discharges hot water discharged from the shower head. A first discharge passage E1 is formed between the lower discharge port 110C and the switching valve 112. As shown in FIG. A second discharge passage E2 is formed between the rear discharge port 110D and the switching valve 112. As shown in FIG. As described above, the switching valve 112 switches between the lower ejection port 110C and the rear ejection port 110D.

Further, as shown in FIGS. 4 and 6, an opening 113 is formed in the lower portion of the faucet main body 110 . The opening 113 is formed in a cylindrical shape extending vertically, and is provided in a form that communicates the water supply channel C as the primary side channel and the external space of the faucet main body 110 . The opening 113 has an internal thread 113A formed on its inner peripheral surface. The plug 1 with a depressurization mechanism is attached to the faucet device 100 by being screwed onto the internal thread 113A and inserted into the opening 113. As shown in FIG.

In the faucet device 100 configured as described above, the faucet 1 with the depressurization mechanism is attached to the opening 113 at the bottom of the faucet main body 110 by screwing, as described above. The faucet 1 with a depressurization mechanism is buried in a faucet main body 110 when attached to the faucet device 100 . Specifically, when the plug 1 with a depressurization mechanism of the first embodiment is screwed into the opening 113 and attached to the faucet device 100, the lower edge of the opening 113 is substantially flush with the lower edge of the opening 113, or the lower edge It is assumed to be a form located above. Therefore, the faucet 1 with a depressurization mechanism attached to the faucet main body 110 is covered with the cover 120 together with the faucet main body 110 and is invisible from the outside.

As shown in FIGS. 7 and 8, the plug 1 with a depressurization mechanism includes a plug body 10 and a valve body 20. As shown in FIGS. The tap 1 with a depressurization mechanism includes a compression coil spring 30 as a biasing member that biases the valve body 20 in the valve closing direction, and an O-ring 40 that functions as a sealing member when attached to the faucet main body 110. and have. The plug 1 with a depressurization mechanism is unitized by housing a valve body 20 and a compression coil spring 30 in a space 10A inside a plug body 10, and is detachably attached to a faucet body 110. As shown in FIG.

The plug body 10 is detachably attached to the opening 113 . Further, the plug main body 10 is formed with a communication path that communicates the water supply flow path C with the space outside the faucet main body 110 in a state of being attached to the opening 113 . The plug body 10 has a spindle 11 and a spindle receiver 12 . The spindle 11 is made of glass fiber reinforced polyphenylene sulfide resin (PPSGF). The spindle 11 has a tubular portion 11A, an enlarged diameter portion 11B, a locking portion 11C, an engaging portion 11D, a constricted portion 11E and a flange portion 11F. The cylindrical portion 11A has a bottomed cylindrical shape with an open bottom. The enlarged diameter portion 11B is formed by enlarging the outer circumference of the bottom wall side end portion of the tubular portion 11A to be larger than the outer diameter of the tubular portion 11A. The locking portion 11C is locked to a locked portion 12A of the spindle receiver 12, which will be described later. The engaging portion 11C is formed by hollowing out the peripheral wall of the tubular portion 11A in a U-shape, and has a lower end connected to the opening side end portion of the tubular portion 11A and a free upper end. It is formed in a cantilever shape and locked by a so-called snap-fit structure. The locking portions 11C are formed at two locations around the central axis of the spindle 11 at an equal interval of 180°.

The engaging portion 11D is formed so as to protrude downward from the lower end surface of the enlarged diameter portion 11B along the outer peripheral surface of the cylindrical portion 11A. The engaging portion 11D engages with an engaged portion 12B of the spindle receiver 12, which will be described later. The engaging portions 11D are formed at two positions equidistantly distributed by 180° around the central axis of the spindle 11 and shifted by 90° from the engaging portion 11C. The constricted portion 11E is formed to extend upward from the bottom wall side end portion of the cylindrical portion 11A. An O-ring 40 is attached to the constricted portion 11E, thereby liquid-tightly sealing with the inner peripheral surface of the opening 113. As shown in FIG. A flange portion 11</b>F is formed at the upper end portion of the spindle 11 . The flange portion 11F has an outer diameter larger than that of the constricted portion 11E. is fitted into the inner wall of the upper end of the opening 113 .

Further, the spindle 11 is formed with a communication hole 11G. The communication hole 11G is formed along the central axis of the spindle 11 so as to penetrate from the lower surface of the bottom wall of the cylindrical portion 11A to the upper surface of the flange portion 11F. A projecting portion 11H that protrudes downward in a tapered shape is formed on the lower surface of the bottom wall of the cylindrical portion 11A, which is the lower end side of the communication hole 11G. The projecting portion 11H serves as a valve seat with which the valve body 20 abuts to close the communication hole 11G when the valve body 20 is closed.

The spindle receiver 12 is made of brass (C3604BD). As shown in FIGS. 7 and 8, the spindle receiver 12 has a bottomed cylindrical shape with an open top. By fitting the spindle receiver 12 and the spindle 11 together, the plug body 10 forms a space 10A for accommodating the valve body 20 therein. On the peripheral wall of the spindle receiver 12, when the spindle 11 is fitted, a locked portion 12A with which the locking portion 11C of the spindle 11 is locked, and a locked portion 11D with which the engaging portion 11D of the spindle 11 is engaged. A portion 12B is provided.

The bottom wall of the spindle receiver 12 is formed with a recess 12C that serves as a spring seat for the compression coil spring 30, and a communication hole 12D that vertically penetrates the bottom wall. A plurality of communication holes 12D (three in FIG. 4) are formed around the central axis, and communicate the internal space 10A of the plug body 10 formed together with the spindle 11 and the external space. Each of the communication holes 12D is formed with an inner diameter larger than that of the communication hole 11G formed in the spindle 11. As shown in FIG. The communication hole 12</b>D is also used as a tool hook when attaching the tap 1 with a depressurization mechanism to the faucet device 100 . Furthermore, an external thread 12E is formed on the outer peripheral surface of the spindle receiver 12. As shown in FIG. The external thread 12E is screwed into the internal thread 113A formed on the inner peripheral surface of the opening 113. As shown in FIG. The plug body 10 of this embodiment is detachably attached to the opening 113 by screwing the external thread 12E into the internal thread 113A. Further, the plug body 10 attached to the opening 113 is buried in the opening 113 .

As shown in FIGS. 7 and 8, the valve body 20 has a pressure packing 21 and a packing receiver 22. As shown in FIGS. The pressure packing 21 is made of fluororubber (FKM). The pressure packing 21 has a columnar shape with a projection protruding downward. The upper surface 21A of the pressure packing 21 abuts on the projection 11H of the spindle 11 as a valve seat when the valve is closed. The packing receiver 22 is made of polyacetal (POM). The packing receiver 22 is formed in a stepped columnar shape with a smaller diameter at its lower portion than at its upper portion. The packing receiver 22 is formed with a recessed bottomed hole that opens upward, and the pressure packing 21 is fitted therein. The packing receiver 22 has an upper outer peripheral surface formed to have a hexagonal cross section. A lower outer peripheral surface of the packing receiver 22 is formed to have a circular cross section. The lower portion of the packing receiver 22 having a circular cross section is inserted into the compression coil spring 30, and the upper end surface of the compression coil spring 30 is in contact with the lower end of the stepped upper portion. The valve body 20 is biased upward by the elastic force of the compression coil spring 30, and contacts the projection 11H as a valve seat to close the communication hole 11G.

As described above, the valve body 20 is biased by the compression coil spring 30 in the valve closing direction, that is, in the direction in which the upper surface 21A of the pressure packing 21 contacts the protruding portion 11H of the spindle 11. stored inside. When the pressure in the water supply passage C is equal to or less than a predetermined pressure, the valve body 20 keeps the communication hole 11G in a state where the upper surface 21A of the pressure packing 21 is in contact with the projecting portion 11H. When the pressure in the water supply passage C exceeds a predetermined pressure, the valve body 20 separates the upper surface 21A of the pressure packing 21 from the projecting portion 11H to open the communication hole 11G. In this embodiment, the predetermined pressure is set at approximately 3.0 MPa. This pressure is set by adjusting the elastic force of the compression coil spring 30 and the opening area of the communication hole 11G.

Next, the operation of the plug 1 with a depressurization mechanism of Example 1 configured as described above will be described.
In the plug 1 with the depressurization mechanism, in the normal state, the force of the compression coil spring 30 urging the valve body 20 is greater than the force of the pressure in the water supply passage C, and the valve body 20 closes the communication hole 11G. The valve is closed. As a result, communication between the water supply channel C, which is the primary side channel in the faucet main body 110, and the outside is cut off. On the other hand, in a cold region in winter, the water supply pipe on the upstream side of the faucet device 100 freezes, and the pressure inside the water supply passage C rises. When the force of the spring 30 urging the valve element 20 is greater than the force, the valve is opened and the pressure in the water supply passage C is released to the outside. That is, the valve body 20 is pushed down by the force of the pressure in the water supply passage C, the communication hole 11G communicates with the space 10A in the plug body 10, and the pressure is released from the communication hole 12D of the spindle receiver 12 to the outside. In other words, the valve body 20 is automatically opened due to the increase in the internal pressure, so that the water in the water supply flow path C passes through the communication hole 11G, the space 10A, and the communication hole 12D as communication paths to the outside. Ejected. This prevents the faucet device 100 from being damaged due to an increase in internal pressure.

In the faucet device 100 , the entire faucet body 110 including the opening on the outside of the opening 113 is covered with the cover 120 . Further, the plug 1 with a depressurization mechanism attached to the opening 113 is made invisible from the outside. As a result, the design of the water faucet device 100 is improved, and deterioration of the design of the water faucet device 100 due to the attachment of the tap 1 with the depressurization mechanism is suppressed.

Water discharged from the communication hole 12D is received by the water receiving portion 122A of the lower cover member 122. As shown in FIG. That is, the plug 1 with a depressurization mechanism is housed in the cover 120 in a form positioned above the water receiving portion 122A of the lower cover member 122, thereby suppressing direct scattering of waste water.

As described above, the faucet 1 with a depressurization mechanism of Example 1 is a faucet device 100 having a faucet main body 110 formed with a water supply channel C as a primary side channel through which water from a water supply pipe flows. is provided. A plug 1 with a depressurization mechanism includes a plug body 10 and a valve body 20 . The faucet body 10 is detachably attached to an opening 113 formed to communicate with a water supply channel C as a primary side channel inside the faucet body 110 . Further, the plug body 10 is formed with a communication hole 11G, a space 10A, and a communication hole 12D as a communication path for communicating the water supply passage C and the space outside the faucet body 110 when attached to the opening 113. It is The valve body 20 is accommodated in the plug main body 10 in a state in which an urging force is applied in a direction to close the communication hole 11G, which is a communication path. The valve body 20 maintains a state in which the communication hole 11G, which is a communication passage, is closed when the pressure in the water supply passage C is equal to or lower than a predetermined pressure, and is closed when the pressure in the water supply passage C exceeds a predetermined pressure. The communication hole 11G, which is a passage, is opened.

The faucet 1 with a depressurization mechanism has a valve body 20 that closes the communicating passage when the pressure of the water supply passage C inside the faucet body 110 is below a predetermined pressure, and opens the communicating passage when the pressure exceeds the predetermined pressure. . Thereby, when the internal pressure rises, the pressure in the water supply passage C can be automatically released. In addition, since the pressure can be automatically released, there is no need to manually remove water when the water supply pipe freezes. Therefore, the pressure in the water supply passage C can be reliably released regardless of whether or not the draining work is performed.

Therefore, the plug 1 with a depressurization mechanism of Example 1 can easily release the pressure in the water supply channel C as the primary side channel of the faucet device 100 with a simple configuration.

Further, the faucet body 10 and the valve body 20 are unitized and attached to the opening 113 of the faucet body 110 in a detachable manner. Therefore, by providing an opening 113 on the water faucet device 100 side and attaching the plug 1 with a pressure relief mechanism to this opening 113, a water faucet device having a pressure relief mechanism can be easily realized. Therefore, it is not necessary to design and incorporate a depressurization mechanism for each faucet device, and a faucet device having a depressurization mechanism can be realized at low cost.

Further, the plug main body 10 is buried in the opening 113 when attached to the opening 113 of the faucet main body 110 . Therefore, the faucet 1 with a depressurization mechanism can be attached without affecting the design of the faucet device 100 .

<Example 2>
Next, a plug with a depressurization mechanism according to Example 2 will be described. A plug 201 with a depressurization mechanism of Example 2 differs from Example 1 in that, in addition to having the same configuration as that of Example 1, the plug main body includes an operating portion. The same reference numerals are assigned to the same configurations as those of the first embodiment, and detailed description thereof will be omitted.

As shown in FIGS. 9 and 10, a plug 201 with a depressurization mechanism of Example 2 has the same configuration as that of Example 1, but a plug main body 210 has an operation portion 213 . The operation part 213 is provided for performing an operation to open the stoppage of water between the faucet main body 110 and the faucet body 110 . As shown in FIG. 9 , the operation part 213 protrudes outward from the opening 113 while being attached to the opening 113 of the faucet body 110 . Further, the plug 201 with a depressurization mechanism of the present embodiment protrudes outward through a through hole 122B formed in the lower cover member 122 of the cover 120 in a state of being attached to the opening 113 . That is, the plug 201 with a depressurization mechanism of Example 2 is attached to the opening 113 in such a manner as to protrude downward from the lower surface of the lower cover member 122 .

As shown in FIG. 10 , the operating portion 213 extends downward from the lower end of the spindle receiver 212 of the plug body 210 and is integrally formed with the spindle receiver 212 . The operating portion 213 has a flat knurl (not shown) formed on its outer peripheral surface. The operating portion 213 is manually operated by pinching the outer peripheral surface on which the knurling is formed with the fingertips when performing the draining operation. The operation portion 213 is formed with a communication hole 212</b>D that extends from the recess 12</b>C through the bottom wall of the spindle receiver 212 and the operation portion 213 and opens to the bottom surface of the operation portion 213 . The communication hole 212D has an inner diameter larger than that of each communication hole 12D in the first embodiment, and is formed along the central axis of the plug body 210. As shown in FIG.

In this embodiment, the plug 201 with a depressurization mechanism is attached to the opening 113 of the faucet main body 110 via a socket 202, as shown in FIGS. The socket 202 is formed in a cylindrical shape with a through hole 202A penetrating along its central axis. The socket 202 has a male threaded portion 202B formed on its upper outer peripheral surface and a female threaded portion 202C formed on its lower inner peripheral surface. The male threaded portion 202B has the same diameter and pitch as the male thread 12E formed on the outer peripheral surface of the spindle receiver 212, and is screwed into the female thread 113A of the opening 113. As shown in FIG. The female thread portion 202C has the same diameter and pitch as the female thread 113A of the opening 113, and the male thread 12E of the spindle receiver 212 is screwed therewith. By screwing the plug 201 with the pressure release mechanism into the socket 202 and screwing the socket 202 into the opening 113 in this way, the outer peripheral surface of the plug with the pressure release mechanism 201 and the inner peripheral surface of the socket 202 are separated. The space between them is liquid-tightly sealed by an O-ring 40 , and the space between the outer peripheral surface of the socket 202 and the inner peripheral surface of the opening 113 is liquid-tightly sealed by a sealing member 203 attached to the socket 202 .

When attaching the plug 201 with a depressurization mechanism to the faucet main body 110 via such a socket 202, the size of the socket 202 can be adjusted without changing the size of the unitized plug 201 with a depressurization mechanism itself. By changing , the amount of protrusion of the operating portion 213 from the faucet main body 110 can be freely changed.

Further, when the draining work is performed by manual operation, the operation part 213 is pinched and the plug 201 with the depressurization mechanism is rotated in the direction of loosening the screwing between the male screw 12E and the female screw part 202C. As a result, the sealing by the O-ring 40 is released, and water is drained along the outer peripheral surface of the plug body 210 and the inner peripheral surface of the socket 202 .

As described above, the plug 201 with the depressurization mechanism of the second embodiment can easily release the pressure in the water supply channel C as the primary side channel of the water faucet device 100 with a simple configuration as in the first embodiment. can do.

Further, the faucet main body 210 and the valve body 20 are unitized and attached detachably to the opening 113 of the faucet main body 110 . Therefore, by providing an opening 113 on the water faucet device 100 side and attaching the plug 1 with a pressure relief mechanism to this opening 113, a water faucet device having a pressure relief mechanism can be easily realized. Therefore, it is not necessary to design and incorporate a depressurization mechanism for each faucet device, and a faucet device having a depressurization mechanism can be realized at low cost.

Further, the faucet body 210 protrudes outward from the opening 113 of the faucet body 110 in a state of being attached to the faucet body 110, and is used for performing an operation to open the water stoppage between the faucet body 110 and the faucet body 110. It has an operation unit 213 . In this case, since it is possible to perform water draining work by manual operation similar to the conventional one, the pressure in the water supply channel C of the faucet device 100 can be reliably released.

Further, the plug 201 with a depressurization mechanism of Example 2 is attached to the opening 113 via a socket 202 . Therefore, by changing the size and length of the socket while the plugs with the depressurization mechanism have the same structure, the operation part 213 can be protruded by a desired amount and attached to the opening 113 . Also, by changing the socket, one type of common tap 201 with a depressurization mechanism can be attached corresponding to various faucet devices.

The present invention is not limited to Examples 1 and 2 explained by the above description and drawings, and the following examples are also included in the technical scope of the present invention.
(1) In Embodiments 1 and 2, the valve body is urged by the compression coil spring, but it may be urged by other urging means.
(2) Embodiments 1 and 2 exemplify the form of attachment to the opening of the faucet body by screwing, but other engagement forms may be used.
(3) In Example 1, the configuration in which the plug body is buried in the opening was exemplified, but this is not essential. The plug body may have a form that protrudes outward from the opening when attached to the opening. Further, when a cover is provided to cover the faucet body, the faucet body may project outward from the opening and the cover.
(4) In Example 2, the faucet with a depressurization mechanism is attached to the opening of the faucet body via a socket. , may be attached directly to the opening.
(5) In Embodiments 1 and 2, the faucet device to which the faucet with a depressurization mechanism is attached was exemplified with a form in which the faucet body is covered with a cover. , may be applied to faucet installations without covers. In addition, when the faucet device is provided with a cover, the configuration and the like are not particularly limited.
(6) In Examples 1 and 2, each member is made of a specific material, but the material is not particularly limited.

DESCRIPTION OF SYMBOLS 1,201... Plug with depressurization mechanism 10,210... Plug main body 20... Valve body 100... Faucet device 110... Faucet main body 113... Opening part 213... Operation part C... Water supply flow path (primary side flow path)

Claims (3)

Provided in a faucet device including a faucet body in which a primary side passage through which water from a water supply pipe flows is formed,
It is detachably attached to an opening formed in the faucet body in a form communicating with the primary side flow path, and is attached to the opening to connect the primary side flow path and the outside of the faucet body. a plug body having a communication path communicating with the space;
It is housed in the plug body in a state in which a biasing force is applied in a direction to close the communication path, and when the pressure in the primary side flow path is equal to or lower than a predetermined pressure, the state in which the communication path is closed is maintained. a valve body that opens the communication path when the pressure in the primary side passage exceeds the predetermined pressure;
with
A plug with a depressurization mechanism, wherein the plug body is embedded in the opening when attached to the opening. Provided in a faucet device including a faucet body in which a primary side passage through which water from a water supply pipe flows is formed,
It is detachably attached to an opening formed in the faucet body in a form communicating with the primary side flow path, and is attached to the opening to connect the primary side flow path and the outside of the faucet body. a plug body having a communication path communicating with the space;
It is housed in the plug body in a state in which a biasing force is applied in a direction to close the communication path, and when the pressure in the primary side flow path is equal to or lower than a predetermined pressure, the state in which the communication path is closed is maintained. a valve body that opens the communication path when the pressure in the primary side passage exceeds the predetermined pressure;
with
The faucet body protrudes outward from the opening in a state of being attached to the opening, and has an operation part for performing an operation to open the water stoppage between the faucet body and the faucet body. Stopper with depressurization mechanism. 3. The depressurization according to claim 1, wherein the plug body is fitted into the opening with a liquid-tight seal between the plug body and the inner peripheral surface of the opening via an O-ring. Stopper with mechanism.

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