JP4142219B2 - Water discharge device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water discharge device, and more particularly, to a water discharge device with good operability in a water discharge operation and a flow rate adjustment operation.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, in a water discharge device such as a single water faucet, water is discharged from the water discharge port by bringing the valve body into contact with or away from the valve seat by rotating the handle, and the valve opening amount of the valve body The water discharge flow rate from the water discharge port is adjusted according to the conditions.
In this case, it is necessary to adjust the flow rate so that the flow rate of water discharged from the water discharge port becomes a desired flow rate every time water discharge is performed, which is not sufficient in terms of convenience.
[0003]
On the other hand, in a water discharge device such as a hot and cold water mixing faucet, there is a water discharge valve, a water discharge operation unit that is an operation unit thereof, a flow rate adjustment valve, and a flow adjustment operation unit that is an operation unit thereof. In this water discharge device, the water discharge operation section and the flow adjustment operation section are located at separate positions, and therefore, the water discharge operation and the flow adjustment operation cannot be performed at the same location. It was not enough.
[0004]
By the way, in recent years, a kitchen faucet device has been used in which the tip of a water discharge pipe is configured as a shower head, which can be drawn out together with a shower hose and discharged from a water discharge port.
Or the thing of the same form is used also in the hair-washing shower faucet with which a bathroom vanity is equipped.
[0005]
On the other hand, in the bathroom, a shower hose that extends from the faucet body and a shower head connected to the tip of the shower hose has been widely used so that water supplied from the faucet body can be discharged from the shower head. ing.
[0006]
By the way, in the case of these water discharge devices, the shower head can be freely brought to the target position to discharge water, which is more convenient than other conventional water discharge devices whose water discharge position is almost fixed, but on the other hand The water discharge operation part for performing water discharge / water stop (water discharge) from the water discharge port and the flow control operation part for adjusting the water discharge flow rate from the water discharge port are located far from the shower head. There was a problem that operation was difficult.
[0007]
Thus, for example, in a bathroom water discharge device, a shower head is provided with a water discharge operation section as a hand operation section.
FIG. 10 shows an example. In the figure, reference numeral 300 denotes a shower head, and 302 denotes a joint pipe, to which end portions of a flexible shower hose 304 having a predetermined length are connected.
The joint pipe 302 has a connection port 306 and is connected to the faucet body at the connection port 306, and water from the faucet body passes through the main water channel 308 inside the shower hose 304 and the main water channel 308 inside the shower head 300. It is supplied to the water outlet of the shower head 300.
[0008]
The shower head 300 is provided with a spout water operation section 310 as a hand operation section, and a main valve body 312 that opens and closes the main water channel 308 is opened and closed by the operation of the spout water operation section 310. .
[0009]
Specifically, a flexible tube 314 is inserted into the shower hose 304 and the shower head 300, and a pilot water channel 316 is formed therein. When the pushing operation is performed to the right, the pilot valve body 322 is opened away from the valve seat 324 by the rightward movement of the shaft 318 and the downward pushing of the ball 320, and the water inside the pilot water channel 316 is discharged inside the shower head 300. Drain to main channel 308.
[0010]
Then, the internal pressure of the back pressure chamber 326 formed on the back side of the main valve body 312 (this back pressure chamber 326 communicates with the pilot water channel 316) decreases, and the main valve body 312 is upward in the figure by the water supply pressure. The valve opens.
Here, water from the faucet body side is supplied to the main water channel 308 in the shower hose 304. The supplied water flows through the main water channel 308 inside the shower head 300 and is then discharged from the water outlet at the tip.
[0011]
On the other hand, when the spout water operation unit 310 is pushed leftward to return to the state shown in FIG. 10, the pilot valve body 322 is closed here, and the pressure inside the back pressure chamber 326 gradually increases, finally. The main valve body 312 is closed and the supply of water to the water outlet is stopped.
[0012]
In the water discharge device shown in FIG. 10, the water discharge from the water discharge port can be performed by operating the water discharge operation unit 310 with the shower head 300 held in hand. Since the water stop operation part 310 opens and closes the pilot water channel 316, it can be easily operated with a small force and is highly convenient in this respect. However, in this water discharge device, the flow rate from the water discharge port is reduced. In the case of adjustment, it is necessary to operate the flow control operation part of the faucet body far away from the shower head 300, which is not yet sufficient in terms of convenience.
[0013]
FIG. 11 shows another conventional example. In this example, the valve body 332 is moved in the axial direction by rotating the operation knob 330 of the spout water operation section 328 provided in the shower head 300. Then, the main water channel 308 is opened and closed by bringing the valve seat 334 into contact with or separating from the valve seat 334, and water discharge and water stop from the water discharge port 336 are performed.
In the case of the water discharge device of this example, when the valve body 332 is closed, the main valve body 312 disposed upstream of the shower hose 304 is also closed.
[0014]
Even in the water discharge device of this example, water discharge can be performed by hand operation while holding the shower head 300 in the hand.
In the case of this water discharge device, it is also possible to adjust the water discharge flow rate from the water discharge port 336 by adjusting the rotation amount of the operation knob 330 in the water discharge operation section 328.
[0015]
However, even in this water discharge device, the flow rate must be adjusted each time water discharge is performed, and the operation is troublesome and problematic in terms of usability.
That is, even if the position of the valve body 332 is adjusted so that the flow rate is appropriate, if the water is subsequently stopped, the position of the valve body 332 will inevitably move. There is a hassle that you have to operate to become.
[0016]
Although the case of the water discharging apparatus which has a shower head was mentioned as an example above, also in the general kitchen faucet apparatus (water discharging apparatus) which discharges water from the water outlet at the front-end | tip of the normal long water discharging pipe which does not have such a shower head The same problem, greater or lesser, is inherent.
[0017]
[Means for Solving the Problems]
The water discharging apparatus of the present invention has been devised to solve such problems.
Thus, according to the first aspect of the present invention, (a) a main water channel that communicates with the water discharge port and allows water to flow at a large flow rate, and (b) the main water channel is opened and closed, and the water discharge is performed in an amount corresponding to the valve opening amount. A main valve body that discharges water from the water port; and (c) the main valve body is provided so as to be movable in the opening and closing direction of the main valve body, and the main valve body is opened by contacting the main valve body when the main valve body is opened. A flow control member that regulates the valve amount and performs flow control; and (d) a back pressure chamber that is formed on the back side of the main valve body and presses the main valve body in a valve closing direction; A pilot water passage for controlling the operation of the main valve body and a pilot valve body for opening and closing the pilot water passage, which communicate with a downstream portion from the valve body; and (e) opening and closing the pilot valve body to (I) The flow rate is adjusted by operating the flow rate adjusting member in the opening / closing direction of the main valve body. Characterized in that it has a regulating operation unit.
[0018]
According to a second aspect of the present invention, in the water discharge device according to the first aspect, the pilot water passage is formed in a form penetrating the main valve body, and the pilot water passage opens through the main valve body. It is characterized by opening and closing.
[0019]
According to a third aspect of the present invention, in the water discharge device according to the first aspect, the flow rate adjusting member forms a constituent member of the back pressure chamber, and the pilot water channel penetrates the flow rate adjusting member. The pilot valve body is configured to open and close an opening of the pilot water channel that penetrates the flow rate adjusting member.
[0020]
According to a fourth aspect of the present invention, in the water discharge device according to any one of the first to third aspects, the water discharge operation portion and the flow adjustment operation portion are coaxially located at the same location, and the water discharge operation portion is on the inside. The flow control operation portions are respectively arranged outside.
[0021]
According to a fifth aspect of the present invention, in the water discharge device according to any one of the first to fourth aspects, the water discharge operation section is a push button type operation section.
[0022]
According to a sixth aspect of the present invention, there is provided the water discharge device according to the fifth aspect, wherein the water discharge operation portion is a push button type operation member that is an operation force input portion, and the pilot valve every time the operation member is pushed in. It has the lock mechanism which hold | maintains a body alternately in a valve closing position and a valve opening position, It is characterized by the above-mentioned.
[0023]
According to a seventh aspect of the present invention, in the water discharge device according to any one of the first to sixth aspects, the flow adjustment operation unit is a rotary handle type operation unit.
[0024]
According to an eighth aspect of the present invention, in the water discharge device according to any one of the first to seventh aspects, the main valve body, the flow rate adjusting member, the pilot valve body, the water discharge operation section, and the flow adjustment operation section are provided inside. It is provided in the water discharge part which consists of a shower head which has a main water channel, or a water discharge pipe.
[0025]
According to a ninth aspect of the present invention, in the water discharge device according to the eighth aspect, in the main water channel upstream of the water discharge unit, the main water channel in the water discharge unit is operated when the flow adjustment operation unit reduces the water discharge amount. A pressure reducing valve for holding the pressure in a reduced pressure state relative to the feed water pressure is incorporated.
[0026]
[Operation and effect of the invention]
As described above, the water discharge device of the first aspect is provided such that the main valve body that opens and closes the main water passage is opened and closed by opening and closing the pilot water passage by the pilot valve body, and is movable in the opening and closing direction of the main valve body. The amount of opening of the main valve element is regulated by the contact action of the flow rate adjusting member on the main valve element, and the flow rate is adjusted. In this water discharge device, the water discharge operation can be easily performed with a small operating force. In addition to good operability of the discharge water, the valve opening amount of the main valve body is regulated by the contact action of the flow rate adjustment member. It is possible to discharge water from the water outlet at an appropriate flow rate from the beginning of water discharge by performing water discharge in a state where it is positioned.
[0027]
In addition, since the stop water is performed by opening and closing the pilot valve body, the stop water operation section can be configured as a simple operation section that can be operated by a push button type one-touch.
In addition, the water discharge device of the present invention opens and closes the main water channel and adjusts the flow rate with the same main valve body, as compared with the main water channel provided with a valve body for water discharge and a valve body for flow rate adjustment. Therefore, the apparatus including the valve body, the water discharge operation section, and the flow adjustment operation section can be configured in a compact manner.
Furthermore, since the same main valve body is used to control the water discharge and the flow rate, the water discharge operation unit and the flow adjustment operation unit, which are the operation units, can be easily disposed at the same location. .
[0028]
Here, the pilot water channel is formed so as to penetrate the main valve body, and the opening of the pilot water channel can be opened and closed by the pilot valve body (Claim 2).
Alternatively, the pilot water channel can be formed so as to penetrate the flow rate adjusting member, and the pilot water channel opening penetrating the flow rate adjusting member can be opened and closed by the pilot valve body.
[0029]
In the present invention, the main valve body can be constituted by a diaphragm valve body.
Alternatively, the main valve body can be constituted by a sliding valve body that slides along a cylindrical sliding surface.
[0030]
As described above, in the present invention, the spouting water operating section and the flow control operating section can be easily disposed at the same place, and thus they are coaxially arranged at the same place and the spouting water operating section is disposed inside. In addition, by disposing the flow adjustment operation portions respectively on the outside, the spout water operation and the flow adjustment operation can be performed at the same place, and the operability thereof is improved.
[0031]
Further, in the present invention, as described above, the spout water operation section can be easily formed into a push button type operation section (Claim 5). In this way, the spout water operation can be performed with one touch by pushing the push button. Easy to do.
[0032]
In this case, the spouting water operating section includes a push button type operating member that is an operating force input section, and a lock mechanism that alternately holds the pilot valve body at the valve closing position and the valve opening position each time the operating member is pushed. (Claim 6).
In this way, even when the pushing force is applied and then the pushing force is released, the water discharge state or the water stopping state can be maintained, and the operation becomes easier.
[0033]
In the present invention, the flow rate adjusting member can be configured as a screw member, and can be advanced and retracted in the opening and closing direction of the main valve body by a screw feed action by operation of the flow adjustment operation unit.
In addition, the flow adjustment operation unit can be a rotary handle type operation unit.
[0034]
In the present invention, the main valve body, the flow rate adjusting member, the pilot valve body, the water discharge operation section, and the flow adjustment operation section can be provided in a water discharge section including a shower head or a water discharge pipe. ).
In this way, in the water discharger that can freely carry the shower head with the shower hose or in the water discharger having a long water discharge pipe, the water discharge operation and the flow control operation can be performed by hand operation. Convenience can be dramatically improved.
[0035]
In this invention, the pressure-reduction valve which hold | maintains the pressure of the main water channel in a water discharging part in a pressure reduction state with respect to a water supply pressure can be incorporated in the main water channel upstream from the said water discharging part.
In such a case, when the water discharge unit, for example, the flow control operation unit of the shower head is operated in the direction of decreasing the water discharge amount by the hand operation, the primary water supply pressure is increased in the shower hose and the shower hose becomes hard. In addition, the flow rate can be adjusted lightly with a small force by the pressure reducing action of the pressure reducing valve.
In addition, since the downstream side of the pressure reducing valve is maintained in a reduced pressure state by the action of the pressure reducing valve, the downstream side portion including the shower hose need not have a pressure resistant structure, and the cost can be reduced. It is done.
Further, the on / off operation force can be reduced after the pressure reducing valve is closed.
[0036]
【Example】
Next, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment in which the present invention is applied to a single faucet. In the figure, reference numeral 10 denotes a faucet body having a tube body 12.
A main water channel 14 is formed inside the tube body 12, and a water discharge port 16 is provided at a distal end portion of the tube body 12 so as to communicate with the main water channel 14.
[0037]
A valve seat 18 is formed on the main water passage 14, and a main valve body 20 including a diaphragm valve body that opens and closes the main water passage 14 by contacting or separating from the valve seat 18 is provided.
A back pressure chamber 22 is formed on the back side (upper surface side in the figure) of the main valve body 20, and the main valve body 20 is normally pressed against the valve seat 18 by a downward pressing force of the back pressure chamber 22. The contacted state, that is, the valve closed state is maintained.
[0038]
The main valve body 20 communicates between the main water passage 14 and the back pressure chamber 22 in the downstream portion of the valve seat 18 and the communication hole 24 communicating the main water passage 14 and the back pressure chamber 22 in the upstream portion of the valve seat 18. A communication hole 26 is formed, and a pilot water channel 30 for controlling the operation of the main valve body 20 is formed including the communication holes 24 and 26.
[0039]
In this example, the pilot water channel 30, specifically, the opening of the communication hole 26 is opened and closed by the pilot valve body 32, specifically the shaft portion 34 thereof, so that the main valve body 20 is opened or closed. .
Specifically, the pilot water passage 30 is opened when the pilot valve body 32 is spaced upward from the valve seat 28 of the main valve body 20 in the figure, and here, the water in the back pressure chamber 22 flows into the main water passage 14 through the communication hole 26. It flows out and the pressure of the back pressure chamber 22 decreases. Then, the main valve body 20 is opened by the water supply pressure supplied to the main water channel 14, and the water sent from the water outlet 16 through the main water channel 14 is discharged.
[0040]
On the other hand, when the pilot valve body 32 comes into contact with the valve seat 28 and closes the pilot water channel 30, the water upstream of the main water channel 14 flows into the back pressure chamber 22 through the communication hole 24, and thereby the back pressure chamber 22. The internal pressure increases and the main valve body 20 is closed.
[0041]
The tubular body 12 is formed with a cylindrical rising portion 36, and a cylindrical sleeve 38 is screwed to the housing 12, thereby forming a housing 39.
A cylindrical sliding surface 42 is formed on the inner surface of the housing 39, specifically, the sleeve 38, and a cylindrical flow rate adjusting member 40 is fitted therein so as to be slidable in the axial direction.
[0042]
The flow rate adjusting member 40 is a member that abuts the main valve body 20 when the main valve body 20 is opened and regulates the valve opening amount, and water from the main water channel 14 is set to the valve opening amount of the main valve body 20. Water is discharged from the water outlet 16 with a corresponding amount of water.
The flow rate adjusting member 40 changes the position in the axial direction by a rotation operation of a rotary handle type flow adjustment operation unit 46 described later, and controls the contact position with respect to the main valve body 20, that is, the valve opening amount. Accordingly, in this example, the water discharge flow rate from the water discharge port 16 is controlled in accordance with the change in the axial position of the flow rate adjusting member 40.
[0043]
A plug 45 for forming the back pressure chamber 22 is disposed further inside the flow rate adjusting member 40, and the back pressure chamber 22 is formed between the plug 45 and the main valve body 20.
[0044]
A sleeve 48 for transmitting an operation force to the flow rate adjusting member 40 is assembled to the flow adjustment operation unit 46 in an integrally rotated state.
A male screw 50 is provided on the outer peripheral surface of the lower end portion of the sleeve 48, and the male screw 50 is screwed into the female screw 44 of the flow rate adjusting member 40. When the flow adjustment operation unit 46 is rotated, the sleeve 48 is rotated. With this rotation, the flow rate adjusting member 40 is driven back and forth in the axial direction, that is, the vertical direction in FIG.
The sleeve 48 is provided with an outward projection 52, and the projection 52 is prevented from being pulled out by coming into contact with the inward projection 54 of the sleeve 38 constituting the housing 39.
[0045]
56 is a water stop operation portion provided coaxially with and inside the flow control operation portion 46. The water stop operation portion 56 in this example includes a push button type operation member 58 having a reverse cup shape, and a pilot water channel. A lock mechanism 62 that holds the pilot valve body 32 for opening and closing the valve 30 at the valve closing position and the valve opening position every time the operating member 58 is pushed in.
[0046]
In this example, the lock mechanism 62 is of a thrust lock type, and has an outer cylinder 88 and a cylindrical guide portion 90 (see FIG. 4) formed in a state protruding from the inner peripheral surface thereof.
The guide portion 90 has sawtooth-like engagement teeth 92 in the circumferential direction along the upper end surface, and further has a plurality of grooves 94 at predetermined intervals along the circumferential direction.
[0047]
On the other hand, the pilot valve body 32 is provided with a large-diameter fixed ring 96 and a rotating ring 98.
The rotating ring 98 is rotatable around the shaft portion 100, and is relatively movable up and down a minute stroke between the stopper portion 102 provided on the shaft portion 100 and the fixing ring 96.
[0048]
Protrusions 104 are provided on the outer peripheral surface of the fixing ring 96 at regular intervals in the circumferential direction, and engaging teeth 106 are formed on the upper ends thereof.
On the other hand, the rotation ring 98 is also provided with projections 108 at regular intervals along the circumferential direction, and the lower end of the rotation ring 98 including the projections 108 has a saw blade-like engagement tooth 110 along the circumferential direction. Is formed.
[0049]
As shown in FIG. 1, the pilot valve body 32 is always urged downward by the spring 112 on the upper surface of the rotating ring 98, and the outer cylinder 88 of the lock mechanism 62 is always urged upward by the spring 114. Has been.
[0050]
The thrust lock type locking mechanism 62 of this example operates as follows.
4B and 4I show a state in which the pilot valve body 32 is in contact with the valve seat 28, that is, a state in which the pilot water channel 30 is closed.
[0051]
In this state, when the operating member 58 and the outer cylinder 88 of the lock mechanism 62 are pushed downward against the urging force of the springs 112 and 114, the pilot valve body 32 of the pilot valve body 32 is shown in FIGS. The rotating ring 98 is disengaged from the groove 94 of the guide portion 90. Here, the rotating ring 98 acts on the cam surface of the engaging tooth 106 of the protrusion 104 on the fixed ring 96 side and the engaging tooth 110 on the rotating ring 98 side. With a small angle, it can be rotated counterclockwise.
[0052]
Thereafter, when the pushing force is removed, the guide portion 90 moves upward together with the outer cylinder 88 by the urging force of the spring 114, and at this time, the engaging teeth 92 at the upper end of the guide portion 90 and the engaging teeth 110 of the rotating ring 98 are partially. It becomes in mesh.
[0053]
When the guide portion 90 is further pushed upward, the rotating ring 98 is lifted from the fixed ring 96 and the rotating ring 98 is further rotated counterclockwise by a minute angle by the action of the cam surfaces of the engaging teeth 92 and 110. The engaging teeth 92 of the portion 90 and the engaging teeth 110 of the rotating ring 98 are completely meshed (see FIGS. 4B and III), and together with this, the rotating ring 98 and the stopper portion 102 come into contact with each other. Thus, the entire pilot valve body 32 including the rotating ring 98 and the fixed ring 96 is raised to the rising end and held at the rising end. That is, the pilot valve body 32 is held in the valve open position.
Here, the pilot water channel 30 is opened, the main valve body 20 is opened, and water flows through the main water channel 14.
[0054]
Now, when the operation member 58 is pushed again, the outer cylinder 88 and the guide portion 90 of the lock mechanism 62 are moved downward together, and here, the engagement teeth 110 of the rotating ring 98 and the engagement teeth 92 of the guide portion 90 are moved. At the same time, the engagement teeth 106 of the fixed ring 96 and the engagement teeth 110 of the rotating ring 98 in the pilot valve body 32 come into contact with each other by the urging force of the spring 112 (FIGS. 4B, IV, and V). When the guide portion 90 is further lowered and the rotating ring 98 is in a free rotating state, the rotating ring 98 is slightly deviated by the action of the cam surfaces of the engaging rings 106 and 110 of the fixing ring 96 and the rotating ring 98. When the engagement teeth 106 and 110 are completely meshed with each other, the rotation of the rotary ring 98 is stopped (see FIGS. 4B and VI).
[0055]
Thereafter, by removing the operating force, as shown in (VII), when the guide portion 90 moves upward by the biasing force of the spring 114, the rotating ring 98 is lifted and then rotated with the engaging teeth 92 of the guide portion 90. The rotating ring 98 is rotated by a small angle by the action of the cam surface with the engagement tooth 110 of the ring 98, and the protrusion 108 of the rotating ring 98 fits into the groove 94 of the guide portion 90 together with the protrusion 104 of the fixing ring 96. Then, the projections 104 and 108 fall to the bottom of the groove 94 with the upward movement of the outer cylinder 88 by the urging force of the springs 112 and 114 (see FIGS. 4B and VIII). Here, the pilot valve body 32 is in a state of closing the pilot water channel 30 again.
Since this lock mechanism is known in the art, further detailed explanation is omitted here.
[0056]
Next, the operation of the water discharge device of this example will be described.
1 and 2 (I) show a state where the pilot valve body 32 is closed, and thus the main valve body 20 is closed. In this state, when the discharge water operation portion 56 is pushed downward, Here, as shown in FIG. 2 (II), the pilot valve body 32 is opened, whereby the pressure in the back pressure chamber 22 is released and the main valve body 20 is opened by the supply water pressure.
[0057]
Here, the main water channel 14 is opened, and water is discharged from the water outlet 16.
However, the water discharge flow rate from the water discharge port 16 at this time is performed with a water amount corresponding to the valve opening amount of the main valve body 20. Thus, the valve opening amount of the main valve body 20 is defined by the position of the flow rate adjusting member 40.
[0058]
FIG. 3 shows the effect of the flow adjustment by the flow adjustment member 40, and the flow adjustment member 40 is rotated from the state shown in FIGS. However, if it is moved downward in the axial direction, the valve opening amount of the main valve body 20 decreases accordingly, and the water discharge flow rate from the water discharge port 16 decreases accordingly (FIG. 3 (I)).
[0059]
Conversely, when the flow rate adjusting member 40 is moved upward in the axial direction as shown in FIG. 3 (II), the contact position with respect to the main valve body 20 is retracted upward in the figure, and the main valve body 20 is greatly opened. Be made. Thereby, the water discharge flow rate from the water discharge port 16 is increased.
In this example, it can be considered that the main valve body 20, the flow rate adjusting member 40, the pilot water channel 30, the pilot valve body 32, the water discharge operation section 56, and the flow adjustment operation section 46 are provided in the water discharge pipe.
[0060]
According to the water discharge device of this example, the water discharge operation can be easily performed with a small operation force, and the operability of the water discharge is good, and the valve opening amount of the main valve body 20 is set to the flow rate adjusting member 40. Therefore, by performing the spout water in a state where the flow rate adjusting member 40 is positioned at an appropriate position, the spout 16 can be discharged from the spout 16 at the target proper flow rate. Water can be discharged.
[0061]
Further, the water discharge device of this example is configured as a simple operation unit that can operate the water discharge operation unit 56 with a push button type one-touch, and the same main valve body 20 can open and close the main water channel 14 and adjust the flow rate. Therefore, the apparatus including the main valve body 20, the water discharge operation unit 56, and the flow adjustment operation unit 46 can be configured in a compact manner. The adjustment operation unit 46 can be easily arranged at the same location.
[0062]
Moreover, the water stop operation part 56 is made into the pushbutton type operation part, and a water stop water operation can be easily performed by one-touch by pushing of a pushbutton.
[0063]
In addition, the discharge water operation unit 56 includes an operation member 58 that is an operation force input unit, and a lock mechanism 62 that alternately holds the pilot valve body 32 between the valve closing position and the valve opening position each time the operation member 58 is pushed in. Therefore, even when the pushing force is applied and then the pushing force is released, the water discharge state or the water stopping state can be maintained, and the operation is simpler.
[0064]
FIG. 5 shows another embodiment of the present invention. In this example, the flow rate adjusting member 40 constitutes a component of the back pressure chamber 22, and the pilot water channel 30 and the valve seat 28 are provided in the flow rate adjusting member 40. The main valve body 20 formed of a diaphragm valve body opens and closes when the pilot valve body 32 abuts against or separates from the valve seat 28.
The other points are the same as in the first embodiment.
[0065]
In this example, since the valve seat 28 is located closer to the pilot valve body 32 than in the first embodiment (the embodiment of FIGS. 1 to 3), the pilot valve body 32 can be simplified relative to the valve seat 28. Further, there is an advantage that the contact state can be surely made and the contact state can be easily maintained.
[0066]
FIG. 6 shows still another embodiment of the present invention. In this example, the main valve body 20 slides in the axial direction along a cylindrical sliding surface 64 formed in the tube body 12 and the sleeve 38. It is comprised as a sliding valve body.
The other points are the same as in the second embodiment shown in FIG.
[0067]
FIG. 7 shows an embodiment in which the present invention is applied to a shower head.
As shown in the figure, in this example, a mechanism similar to the mechanism shown in FIG. 1 is incorporated at the tip of the shower head 66 as the water discharger.
Therefore, in the case of this water discharger, water discharge and water stop from the water discharge port 68 can be performed by operating the water discharge operation part 56 while holding the shower head 66 in the hand, and the rotary handle type flow control. By rotating the operation unit 70, the valve opening amount of the main valve body 20 can be controlled, and the water discharge flow rate from the water discharge port 68 can be adjusted.
[0068]
In addition, in the example of FIG. 7, the main valve body 20 is comprised with the diaphragm valve body, However, This main valve body 20 can also be comprised with the sliding valve body of FIG.
Alternatively, the main valve body 20 is constituted by a diaphragm valve body or a sliding valve body, and the pilot water passage 30 and the valve seat 28 are provided in the flow rate adjusting member 40 as shown in FIG. It is also possible to open and close these openings with the pilot valve body 32.
[0069]
In this example, as shown in the drawing, a piston type pressure reducing valve 72 is incorporated in the main water channel 14 upstream of the shower hose connected to the shower head 66.
The pressure reducing valve 72 has a large-diameter piston portion 74, and the piston portion 74 is slidably fitted to a cylindrical sliding surface 76.
[0070]
As shown in the enlarged view of FIG. 8, the pressure reducing valve 72 has a constant pressure because the pressure in the downstream portion, specifically, the downstream portion (left side in the figure) of the main water channel 14 is higher than the portion where the pressure reducing valve 72 is disposed. When the pressure is reached, it is pushed rightward in the figure due to the difference in the pressure receiving area between the upstream part and the downstream part, and as shown in FIG. By making contact, the main water channel 14 is closed on the upstream side of the throttle or the main valve body 20.
[0071]
In other words, the pressure reducing valve 72 throttles or closes the main water channel 14 to maintain the pressure in the main water channel 14 on the downstream side of the main water channel 14 at a pressure state (depressurized state) lower than the supply water pressure on the upstream side (primary side). Work.
The pressure reducing valve 72 is always urged in the valve opening direction by a spring 82.
[0072]
In the case where such a pressure reducing valve is not provided, when the flow rate of water discharged from the water discharge port 68 is reduced, the primary water supply pressure is guided to the tip of the shower head 66, more specifically to the tip of the main water channel 14, and the pressure in the shower hose. As a result, the shower hose becomes stiff and difficult to bend freely.
[0073]
However, in the water discharge device of the present example, the pressure reducing valve 72 is provided on the upstream side of the main valve body 20, and when the pressure inside the main water passage 14 in the downstream portion is higher than the portion where the pressure reducing valve 72 is disposed, That is, when the pressure inside the shower hose rises, the pressure reducing valve 72 operates in the valve closing direction to restrict the main water passage 14 between the upstream portion and the downstream portion of the pressure reducing valve 72.
[0074]
As a result, the pressure inside the main water passage 14 on the downstream side of the pressure reducing valve 72 is kept in a reduced pressure state that is a constant pressure lower than the supply water pressure, and therefore, even when the flow rate is reduced with the main valve body 20 opened, It is effectively prevented that excessive pressure is applied to the inside of the shower hose and the shower hose becomes hard.
[0075]
In the case of this example, in the shower head 66 that can be freely carried along with the shower hose, the water discharge operation and the flow control operation can be performed by hand operation, and the convenience of the water discharge device can be greatly improved.
[0076]
In addition, when the flow adjustment operation unit 46 is operated in a direction in which the water discharge amount decreases by hand operation, the flow rate can be adjusted lightly by the pressure reducing action of the pressure reducing valve 72.
Further, since the downstream side of the portion where the pressure reducing valve 72 is disposed is maintained in a reduced pressure state by the action of the pressure reducing valve 72, the downstream side portion including the shower hose does not need to have a pressure resistant structure, and there is an advantage that the cost can be reduced. can get.
[0077]
The pressure reducing valve 72 may be provided upstream of the main valve body 20 in the embodiment shown in FIGS. 1 to 6, as shown in FIG.
Even in this case, when adjusting the water discharge flow rate from the water discharge port 16 by the flow adjustment operation unit 46, an advantage that the operation load can be reduced is obtained.
[0078]
Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, in the present invention, in a normal water faucet device (water discharge device) in which a long water discharge pipe extends from the water faucet body, the main valve body, the flow rate adjusting member, the pilot water channel, and the like as described above are provided at the tip of the water discharge pipe. It is also possible to provide a pilot valve body, a water stop operation portion, and a flow adjustment operation portion.
Furthermore, the present invention can be applied to a shower head of a shampoo shower faucet device or a shower head of a bathroom, and can be configured in various forms without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a water discharging apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing one action state of the water discharge device of the same embodiment.
FIG. 3 is a diagram showing an action state different from that of FIG. 2 of the water discharging device of the same embodiment.
4 is an operation explanatory diagram of the lock mechanism of FIG. 1; FIG.
FIG. 5 is a view showing a water discharge device according to another embodiment of the present invention.
FIG. 6 is a view showing a water discharge device according to still another embodiment of the present invention.
FIG. 7 is a view showing a water discharge device according to still another embodiment of the present invention.
8 is a view showing a pressure reducing valve and its peripheral portion of the water discharging device of FIG. 7 together with its operation.
FIG. 9 is a view showing a water discharge device according to still another embodiment of the present invention.
FIG. 10 is a diagram showing a main part of an example of a conventional water discharge device.
FIG. 11 is a diagram showing a main part of an example different from FIG. 10 of a conventional water discharge device.
[Explanation of symbols]
12 tube
14 Main waterway
16, 68 spout
20 Main disc
22 Back pressure chamber
30 Pilot waterway
32 Pilot valve body
39 Housing
40 Flow control member
46,70 Flow control operation unit
56 Water stop operation part
58 Operation members
62 Locking mechanism
66 shower head
72 Pressure reducing valve

Claims (9)

(I) a main water channel that communicates with the water outlet and distributes water at a large flow rate;
(B) a main valve body that opens and closes the main water channel and discharges water from the water outlet with a water amount corresponding to the valve opening amount;
(C) It is provided so as to be movable in the opening and closing direction of the main valve body, and the valve opening amount of the main valve body is regulated by contacting the main valve body during the valve opening operation of the main valve body, thereby adjusting the flow rate. A flow rate adjusting member to perform,
(D) a back pressure chamber that is formed on the back side of the main valve body and presses the main valve body in a valve closing direction and communicates with a downstream portion of the main water channel from the main valve body; A pilot water channel for operation control and a pilot valve body for opening and closing the pilot water channel;
(E) a water discharge operation unit that opens and closes the pilot valve body to perform water discharge from the water discharge port;
(F) a flow adjustment operation unit for adjusting the flow rate by operating the flow rate adjustment member in the opening and closing direction of the main valve body;
A water discharge device characterized by comprising: The water discharge device according to claim 1, wherein the pilot water channel is formed in a form penetrating the main valve body, and the pilot valve body opens and closes an opening of the pilot water channel that penetrates the main valve body. A water discharging apparatus characterized by comprising: 2. The water discharge device according to claim 1, wherein the flow rate adjustment member forms a constituent member of the back pressure chamber, and the pilot water channel penetrates the flow rate adjustment member, and the pilot valve body has the flow rate. A water discharger characterized by opening and closing an opening of the pilot water channel that penetrates the adjusting member. In the water discharging apparatus in any one of Claims 1-3, the said water stop operation part and a flow control operation part are coaxially in the same location, and this water stop operation part is inside, and this flow control operation part is A water discharger, characterized in that it is arranged on the outside. The water discharging apparatus in any one of Claims 1-4 WHEREIN: The said water discharging operation part is a pushbutton type operation part, The water discharging apparatus characterized by the above-mentioned. 6. The water discharge device according to claim 5, wherein the water discharge operation portion is a push button type operation member that is an operation force input portion, and the pilot valve body is opened and closed each time the operation member is pushed. A water discharging device having a lock mechanism for alternately holding the valve position. The water discharger according to any one of claims 1 to 6, wherein the flow adjustment operation unit is a rotary handle type operation unit. In the water discharging apparatus in any one of Claims 1-7, the said main valve body, a flow volume adjustment member, a pilot valve body, a spout water operation part, and a flow control operation part are the shower head which has the said main water channel inside, or A water discharge device, characterized in that the water discharge device is provided in a water discharge portion including a water discharge pipe. The water discharge device according to claim 8, wherein the pressure of the main water channel in the water discharge unit is reduced with respect to the water supply pressure in the main water channel upstream of the water discharge unit during the operation of reducing the water discharge amount by the flow adjustment operation unit. A water discharging device, characterized in that a pressure reducing valve for maintaining the state is incorporated.

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