JP2007263320A - Hot/cold water combination faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent breakage of a disk cartridge in the case the disk cartridge is constantly opened and water is discharged/stopped with an opening/closing valve in a hot/cold water combination faucet equipped with the opening/closing valve for hot and cold water separately from a single lever type mixing part. <P>SOLUTION: The hot/cold water combination faucet has the disk cartridge incorporated inside a cylindrical housing, the disk cartridge having a cartridge case storing a fixed disk and a movable disk, and is provided with the opening/closing valve capable of opening and closing a discharge flow passage. A water storing space is formed between the fixed disk and the movable disk, and the cartridge case radially outside of the fixed disk and the movable disk. The water storing space is communicated with a mixing chamber formed in the movable disk. An opening hole part communicating the water storing space and the inside of the housing is provided in the cartridge case. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hot and cold water mixing faucet having a single lever type mixing portion that mixes and discharges hot water supplied from a water supply / hot water supply pipe by operating a lever handle, and in particular, separate from a single lever type mixing portion. Thus, the present invention relates to a hot and cold water mixing faucet provided with an open / close valve for discharging the mixed water flowing out of the single lever type mixing section.

A conventional hot and cold water mixing faucet having a single lever type mixing portion is configured to include a disk cartridge inside its main body and perform a flow rate operation, a temperature adjustment operation and a discharge water operation by a handle operation (for example, , See Patent Document 1).
That is, the conventional disk cartridge includes a fixed disk having three holes in the lower stage provided with a hot water / water inlet and a mixed hot water outlet, and a single disk that slides on the fixed disk by lever operation. The movable disk having the holes is accommodated in a disk cartridge casing.
In other words, the user of the tap water faucet can easily stop water by lifting the lever handle upward to stop the water, and pressing down the lever handle to stop the water. . Also, if the lever handle is rotated to the right (clockwise) during water discharge, the opening area of the water inlet of the fixed disk is reduced, the hot water inflow rate is increased, and hot hot water is discharged. . On the other hand, if the lever handle is turned leftward (counterclockwise), the opening area of the hot water inlet of the fixed disk is reduced, the water inflow rate is increased, and low temperature hot water is discharged.
At present, since a desired hot water and a desired amount of hot water can be obtained by a simple handle operation, a hot and cold water mixing faucet having the above-described configuration is generally used and is widely used in general households.

However, in recent years, it has been desired to provide universal design considerations, that is, to provide a faucet device that anyone can use. That is, a desired hot water temperature and amount are set in advance in the single lever type mixing unit, and an open / close valve provided separately from the single lever type mixing unit is opened and closed to discharge water from the water outlet. A faucet device.
However, in such a case, since the resin disc cartridge is always in a water discharge state in the single lever type mixing unit, in the disc cartridge, water also enters the cartridge case containing the fixed disc and the movable disc. Due to the accumulated structure, the water hammer (hereinafter referred to as WH) applied to the disk cartridge when the open / close valve is opened and closed causes the cartridge case containing the fixed disk and the movable disk in the disk cartridge to break and leak and mix with hot and cold water. There were problems such as getting wet in the cabinet where the faucet was installed, or in the worst case leaking water downstairs. In particular, since there is a possibility of water leakage, there is a problem that it is particularly dangerous when the user is away for a long time.

JP 2004-76860 A

  The present invention has been made to solve the above problems, and an object of the present invention is to always open a disk cartridge in a hot and cold water mixing faucet provided with a hot water open / close valve separate from the single lever type mixing section. An object of the present invention is to prevent the disk cartridge from being damaged when the water is discharged with the open / close valve.

In order to achieve the above object, according to the first aspect of the present invention, a fixed disk and a movable disk having a mixing chamber that slides on the fixed disk by a lever handle operation are housed in a cartridge case. A hot and cold water mixing faucet incorporating a disk cartridge inside a cylindrical housing, and an opening / closing valve capable of opening and closing the discharge flow path is provided in a discharge flow path through which the mixed water flowing out of the mixing chamber flows. In the hot and cold water mixing faucet, a water storage space is formed between the fixed disk and the cartridge case on the radially outer side of the movable disk, and the water storage space communicates with the mixing chamber formed in the movable disk. In addition, the cartridge case is provided with an opening hole for communicating the water reservoir space with the inside of the housing. Having.
As a result, when the open / close valve is closed in the discharge state of the mixed water in the disk cartridge, primary pressure is applied to the water storage space of the cartridge case. This water storage space communicates with the housing through the opening hole. Therefore, since the primary pressure is applied to the inside and outside of the cartridge case, there is no possibility that the primary pressure is applied only from the inside and the cartridge case is damaged.

According to a second aspect of the present invention, a plurality of the opening holes are provided on the peripheral surface of the cartridge case.
Thereby, since pressure is equally applied to the entire circumference of the housing and the cartridge case, damage to the cartridge case can be effectively prevented.

According to a third aspect of the present invention, the cartridge holder is fixed to the housing with a pressing movement by screwing the cartridge holder into the housing, and the cartridge holder and the housing are brought into contact with each other. The contact surface and the contact surface with the cartridge case are characterized in that a seal member is provided in a direction perpendicular to the direction of the pressing movement.
As a result, the O-ring that is a seal member does not change its deformation amount as the cartridge case is pushed in, and a predetermined sealing force can be obtained, and water leakage can be reliably prevented.

  According to the present invention, in a hot / cold water faucet provided with a hot water opening / closing valve in a water discharge part which is separate from the disk cartridge, the hot water for discharging water with the disk cartridge being always open and the opening / closing valve of the water discharge part. There is an effect that it is possible to reliably prevent the disk cartridge of the mixing faucet from being damaged.

  Hereinafter, the content of the invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a main part of a bathroom vanity to which a hot and cold water mixing faucet according to the present invention is fixed. FIG. 2 is a perspective view when the shelf cover of FIG. 1 is removed. FIG. 3 is a perspective view showing a hot and cold water mixing faucet according to the present invention. FIG. 4 is a plan view in which the hot and cold water mixing faucet of the present invention is partially cut away. FIG. 5 is a perspective view of the disk cartridge of the present invention. FIG. 6 is an exploded perspective view of the disk cartridge of the present invention. FIG. 7 is a cross-sectional view in which a disk cartridge is accommodated in a housing which is a part of the hot and cold water faucet of the present invention. FIG. 8 is a front view of the disk cartridge of the present invention mounted on the faucet of the second embodiment. FIG. 9 is a cross-sectional view taken from the central portion of the handle of FIG.

In FIG. 1, a bathroom vanity A shows a main part except a cabinet (not shown) installed at the lower part of the wash basin 1 and a mirror installed at the upper part of the shelf 2, and the bathroom is made of resin or ceramics. An upper portion of the vessel 1 has a shelf 2 on which small items can be placed. The basin 1 is configured to include a basin 3 and a counter 4 as a configuration of a general vanity.
Further, the shelf 2 disposed in the upper part of the washbasin 1 has hot water supplied to the hot and cold water mixing faucet 7 from the hot water supply hose 5 and the water supply hose 6 (see FIG. 3) disposed on the lower surface of the shelf 2. A lever handle 8 for controlling water discharge and flow rate / temperature is provided, and a spout 9 for discharging hot water is provided on the front surface of the shelf 2. In addition to the lever handle 8 for operating the hot water spouting water, a switch 10 for operating only the hot water spouting water is provided on the front surface of the shelf 2 as a feature of the present invention.
Further, on the right side of the lever handle 8, there is provided a drain plug operation button 11 for operating the drain plug formed on the lower surface of the wash bowl 3. The drain plug operation button 11 lowers the drain plug (not shown) to close the drain port when it is desired to pool the water in the wash bowl 3, and conversely raises the drain plug when the drain port is not desired to pool the drain port. It is for release operation.

The user of the bathroom vanity A configured as described above adjusts the desired flow rate and hot water temperature with the lever handle 8 in advance, as will be described later with reference to FIGS. In other words, the disc cartridge B built in the single lever type mixing unit D is always in the open water discharge state, and the switch 10 can open and close the open / close valve 21 to perform water discharge. It will be able to be used as a hot water mixing faucet, very easy to use.
In addition, since the hot water can be stopped by simple switch operation, the water can be stopped frequently and a water saving effect can be expected.

FIG. 2 is a view with the shelf cover 12 removed, and the hot and cold water faucet 7 is fixed to the shelf front surface 13 via a fixing member 14. Moreover, the hot and cold water mixing faucet 7 is configured to be fixed to the lower surface of the shelf 2 via screws 16 on the plate 15 (see FIG. 4).
Moreover, the spout 9 is provided with a spout 17 at the tip of the spout 9 that switches the spout to a shower or foam. Furthermore, since the shelf 2 has a rectangular shape that is long in the horizontal direction, the shelf 2 has a structure in which a plurality of reinforcing ribs 18 for giving strength are provided at regular intervals. Thereby, even if small items are placed on the shelf cover 12, the shelf portion 2 is not broken.

FIG. 3 is a perspective view showing a hot and cold water mixing faucet according to the present invention. The hot and cold water mixing tap 7 has a hot water supply hose 5 and a water supply hose 6 concealed on the lower surface of the shelf 2 connected to the rear end of the housing 19 of the single lever type mixing portion D, and the housing 19 has a disk cartridge B shown in FIG. A lever handle 8 is provided on the front side. The hot and cold water mixed in the disk cartridge B is configured to be connected to the open / close valve 21 via the water discharge channel 20. A shower hose 22 is connected to the open / close valve 21, and a spout 9 and a water discharge port 17 are fixed to the tip of the shower hose 22.
Further, the opening / closing valve 21 accommodates a touch unit C as a valve mechanism for opening and closing the water discharge passage 20, and a part of the switch unit 23 interlocked with the switch 10 presses the tip portion thereof, thereby It is possible to stop water.
Further, the plate 15 is configured to also serve as a detent for the housing 19 by curving the plate 15 in a circular arc shape at a portion for housing the housing 19.

The operation of the touch unit C will be briefly described with reference to FIG.
Hot water flowing out through the disk cartridge B flows into the touch unit C through the water discharge channel 20. When water is stopped by the touch unit C, the slider 24 of the switch unit 23 pushes the switch 10, and the pressing force pushes the pilot valve 27 from the connecting rod 26 through the operation force transmission member 25. As a result, the pressure release hole 29 of the main valve body 28, which is a diaphragm, is closed, hot water flows into the pressure chamber 30, the pressure in the pressure chamber 30 rises, and a back pressure is generated in the main valve body 28. The main valve body 28 is pressed against the valve seat 31 and the hot water stops.

  When hot water is discharged, the switch 10 is pressed again to release the pressing force of the connecting rod 26 by the latch mechanism inside the pilot valve 27, and the pilot valve is released via the connecting rod 26 by the force of the spring 32. 27 is returned to its original position. As a result, the back pressure in the pressure chamber 30 is released from the pressure release hole 29, the pressing force of the main valve body 28 against the valve seat 31 is lost, and hot water is passed.

FIG. 5 is a perspective view of the disc cartridge B, and an opening hole 35 is formed on the outer periphery of the cartridge case 34 to hold the pressure inside and outside the cartridge case 34 evenly.
A lever 36 for connecting the lever handle 8 is fixed to the upper fixed disk 37 at the upper part of the disk cartridge B. Further, in the cartridge case 34, as shown in FIG. 6, two upper and lower ceramic fixed disks 37 and 38, that is, the lower fixed disk 38 is provided with a hot water / water inlet and a mixed hot water outlet. A hole is formed, and a movable disk 39 is provided between the two fixed disks to adjust the amount of hot water and the temperature of the hot water.
The effect of the opening hole 35 formed in the outer periphery of the cartridge case 34 of the disk cartridge B will be described later.

FIG. 7 is a cross-sectional view in which the disc cartridge B is accommodated in a housing 19 which is a part of the hot and cold water mixing faucet. The disc cartridge B is accommodated in the housing 19 so that the lever 36 projects forward. The lever handle 8 is covered with a handle cover 33 at the upper part of the lever handle 8 for the purpose of improving the design. A lever handle 8 is connected to the lever 36, and the lever handle 8 is used to control hot water discharge, flow rate, and temperature.
The hot water flowing into the disk cartridge B from the hot water supply hose 5 and the water supply hose 6 is mixed in the mixing chamber 40 of the movable disk 39 via the lower fixed disk 38, and further flows out from the outlet of the lower fixed disk 38 to the outflow path 41. , The water discharge path 20 leads to the opening / closing valve 21. In the disk cartridge B, the mixing chamber 40 of the movable disk 39 communicates with a water reservoir space 42 formed between the movable disk 39 and the cartridge case 34 on the outer side in the radial direction. The internal hot water is supplied to the water storage space 42 and comes into contact with the outer periphery of the movable disk 39 and the fixed disks 37 and 38, thereby preventing sticking and excellent slidability.
At this time, the primary pressure is applied from the disc valve B to the water discharge path 20, and the WH generated by opening / closing the opening / closing valve 21 and the WH generated by opening / closing the valves of the surrounding equipment through the water reservoir space 42. As a result, pressure is applied to the cartridge case 34 and it breaks and leaks water, so that the inside of the cabinet nut on which the vanity unit A is installed gets wet, and in the worst case, water leaks downstairs. In particular, since there is a possibility of water leakage, there is a problem that it is particularly dangerous when the user is away for a long time. Therefore, the opening hole 35 is formed in the outer periphery of the cartridge case B. That is, the hot water mixed in the mixing chamber 40 flows out from the opening hole 35 through the water reservoir space 42 and enters the external water reservoir space 42 a provided between the housing 19 and the cartridge case 34. As a result, the pressure in the water reservoir space 42 on the inner surface of the cartridge case 34 and the pressure in the external water reservoir space 42a on the outer surface of the cartridge case 34 become uniform, and the WH generated by opening / closing the opening / closing valve 21 and the valve opening / closing of the surrounding equipment. Even when WH is generated, there is no fear that the cartridge case 34 is damaged.

A plurality of opening holes 35 may be formed within a range where there is no problem in strength. In the case of 90 ° intervals in the circumferential direction, the number is four, and in the case of 120 ° intervals, the number is three. In this embodiment, the weld generated during the molding of the cartridge case 34 is reduced. Although not equally spaced to avoid, four opening holes 35 are formed. Further, the opening 35 is preferably circular in terms of strength.
Therefore, since pressure is equally applied to the entire circumference of the housing 19 and the cartridge case 34, the cartridge case 34 can be effectively prevented from being damaged.

Further, by screwing the cartridge retainer 43 into the housing 19, the cartridge case 34 is fixed to the housing 19 with a pressing movement. The contact surface between the cartridge retainer 43 and the housing 19, and the cartridge case 34 The abutting surface is provided with an O-ring 44 as a seal member in a direction orthogonal to the direction of pressing movement.
Thereby, the deformation amount of the O-ring 44 does not change as the cartridge case 34 is pushed in, so that a predetermined sealing force can be obtained and water leakage can be reliably prevented.

8 and 9 show a hot and cold water mixing faucet according to the second embodiment of the present invention.
In the hot and cold water mixing faucet 77 of the second embodiment, a faucet body 52 having a hand shower lifting / lowering part 51 on the upper surface of the counter 50 and a built-in opening / closing valve (not shown), and the disk cartridge B described above are incorporated. The single-angle lever type mixing part 53 is installed separately. Further, a tip button 55 for operating the open / close valve is installed on the upper part of the water outlet 54 of the faucet body 52.
Here, the point different from the hot water / water mixing tap 7 is that a flexible hose 56 is connected to the downstream side of the single-angle lever type mixing portion 53. That is, the hot water / water mixing faucet 7 of the first embodiment is connected to the metal water discharge channel 20 on the downstream side of the single glue lever type mixing unit 53, whereas in the second example, The downstream side of the single lever type mixing portion 53 is greatly different in that a flexible hose 56 made of resin is connected.
That is, in the hot / cold water mixing tap 77, hot water flowing in from the hot water supply hose 57 and the water supply hose 58 is mixed in the disk cartridge B accommodated in the inner cylindrical housing 19 and guided to the flexible hose 56 through the discharge pipe 60. It will be.
Therefore, in the second embodiment, when WH occurs in the hot water supply hose 57 or the water supply hose 58, the pressure regulating unit is disposed upstream of the flexible hose 56 for the purpose of suppressing the pressure in the flexible hose 56 made of resin and preventing breakage. The configuration is different from the first embodiment in that 61 is provided.
Note that a handle 63 is provided on the upper portion of the housing 19 so that a movable disk (see FIG. 6) built in the disk cartridge B can be operated. A portion of the housing 19 located above the counter 50 is covered with a housing cover 59.

The configuration of the second embodiment will be briefly described with reference to FIG.
The housing 19 is fixed to the upper surface with a tightening nut 62 so as to sandwich the counter 50, and the disk cartridge B is accommodated inside the housing 19. The hot and cold water mixed in the disk cartridge B is guided to the flexible hose 56 via the discharge pipe 60. A pressure regulating unit 61 is connected to the upstream side of the flexible hose 56 for the purpose of preventing the flexible hose 56 from being broken.
The pressure regulating unit 61 includes a pressure regulating valve 64 inside, and a filter 65 for removing foreign substances such as dust on the upstream side of the pressure regulating unit 61, and in order to prevent water leakage from the small holes 69 necessary for pressure regulation, Is provided on the outer periphery of the pressure regulating unit 61.
Thereby, since hot water is guided to the flexible hose 56 in a state where the pressure is adjusted, an excessive pressure is not applied to the flexible hose 56, and the flexible hose 56 can be prevented from being broken.
In addition, with the aim of improving the workability of the hot and cold water faucet, the one-touch coupler 68 is used to simplify the connection between the discharge pipe 60 and the pressure adjustment unit, thereby reducing the risk of water leakage due to construction errors and improving safety. The structure is also considered.

It is a perspective view which shows the principal part of the bathroom vanity which fixed the hot / cold water mixing faucet concerning this invention. It is a perspective view at the time of removing the shelf cover of FIG. 1 of the present invention. It is a perspective view which shows the hot and cold water mixing faucet of the present invention. It is a partially cutaway plan view of the hot and cold water mixing faucet of the present invention. It is a perspective view of the disc cartridge of the present invention of the present invention. It is a disassembled perspective view of the disc cartridge of the present invention. It is sectional drawing which accommodated the disc cartridge in the housing which is a part of the hot-and-water mixing tap of this invention of this invention. It is a front view of the hot and cold water mixing faucet concerning the second embodiment of the present invention. It is sectional drawing cut | disconnected from the center part of the handle | steering-wheel of FIG.

Explanation of symbols

A ... Vanity table B ... Disc cartridge C ... Touch unit D ... Single lever type mixing unit 1 ... Washbasin 2 ... Shelf unit 3 ... Washing bowl 4 ... Counter 5 ... Hot water supply hose 6 ... Water supply hose 7 ... Hot water mixing faucet 8 DESCRIPTION OF SYMBOLS ... Lever handle 9 ... Spout 10 ... Switch 11 ... Drain plug operation button 12 ... Shelf cover 13 ... Shelf front 14 ... Fixing member 15 ... Plate 16 ... Screw 17 ... Water outlet 18 ... Reinforcement rib 19 ... Housing 20 ... Water discharge flow path 34 ... cartridge case 35 ... opening hole 37, 38 ... fixed disk 39 ... movable disk 40 ... mixing chamber 43 ... cartridge presser 44 ... O-ring

Claims (3)

A hot and cold mixed water in which a disk cartridge in which a fixed disk and a movable disk having a mixing chamber that slides on the fixed disk by lever operation is accommodated in a cartridge case is incorporated in a cylindrical housing. A stopper,
In the hot and cold water mixing faucet provided with an open / close valve capable of opening and closing the discharge flow path in the discharge flow path through which the mixed water flowing out of the mixing chamber flows.
A water reservoir space is formed between the fixed disk and the cartridge case on the radially outer side of the movable disk. The water reservoir space communicates with the mixing chamber formed in the movable disk. A hot and cold water mixing faucet characterized in that an opening hole portion communicating with the inside of the housing is provided in the cartridge case. The hot / cold water faucet according to claim 1, wherein a plurality of the opening holes are provided on a peripheral surface of the cartridge case. By screwing a cartridge presser into the housing, the cartridge case is fixed with a pressing movement with respect to the housing, the contact surface between the cartridge presser and the housing, and the contact with the cartridge case The hot and cold water mixing faucet according to claim 1 or 2, wherein a seal member is provided on the surface in a direction orthogonal to the direction of the pressing movement.

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