JP2981813B2 - Hot water mixing faucet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing faucet provided with a temperature control handle and a flow rate control handle on the same end face on the same axis of a faucet body.

[0002]

2. Description of the Related Art For example, as shown in FIG. 3, in a basin 1 provided with a faucet for showering a hair, a faucet 2 and a shower handle 3 are provided upright on the upper side of the basin 1. ing. The shower handle 3 can switch between shower water discharge and normal rectified water discharge. Such a faucet holds the shower handle 3 with the left hand and the temperature control handle (hereinafter, referred to as a temperature control handle) 4 of the faucet 2 or the flow control handle (hereinafter, flow rate handle) of the faucet 2 with the right hand during hair washing. By operating the handle (5), an appropriate temperature and an appropriate amount of hot water are discharged. Therefore, in consideration of its operability, the temperature control handle 4 and the flow rate handle 5 are provided so as to be located on the same end face side on the same axis of the faucet 2.

FIG. 4 is a longitudinal sectional view showing details of a conventional faucet 2 for a hair-washing shower. As shown in the figure, a temperature control handle 4 and a flow rate handle 5 are mounted on the same axis on the upper end face side of a tubular faucet body 6, and a water flow is provided on the outer peripheral face on the lower end face side. An inlet 7 and a water inlet 8 are provided. Further, an outlet 9 for mixed water is provided on the outer peripheral surface of the middle part of the faucet body 6.

[0004] A valve unit 10 having a valve mechanism and a temperature adjusting mechanism is detachably mounted in the faucet body 6.
It is fixed to the faucet main body 6 at a location not shown in the figure. Ports 11, 1 are located at positions corresponding to the hot water inlets 7, 8 and the mixed water outlet 9 of the valve unit 10, respectively.
2, 13 are formed. A housing 15 that meshes with the flow handle 5 via a double serration ring 14 is fitted and mounted on the inner peripheral surface on the upper end side of the valve unit 10.
6 of the casing 17 is screwed.

Further, a screw 18 is screwed on the inner peripheral surface on the upper end side of the casing 17, and one end of the temperature sensing element 16 is urged to the screw 18 via a counter spring 19. The center of the screw 18 is spline-coupled to the tip end of a spindle 20 attached to the temperature control handle 4 so as to penetrate the housing 15 and slide freely.

On the other hand, a water-side sheet 21 is attached to the lower end surface of the casing 17, and a hot-water sheet 23 is attached to the lower end surface of the valve unit 10 via a plug 22. A spool 24 fitted and mounted on the lower end side of the element 16 is disposed between the water-side sheet 21 and the hot-side sheet 23 via a return spring 25. The spool 24 is provided with a hot water inflow port 26a and a hot water outflow port 26b. An outlet port 27 for hot and cold water is formed in an intermediate portion of the casing 17.

When the flow handle 5 is opened in the conventional shower faucet 2 for hair washing constructed as described above, the casing 17 moves upward in FIG. With this, return spring 25
The spool 24 urged upward also moves up and separates from the hot water side sheet 23 to open the hot water inlet 11. The flowing hot water reaches the temperature sensing element 16 through the ports 26a and 26b of the spool 24. Therefore, the temperature sensing element 16 performs the extension operation by sensing the temperature of the hot water, and moves the spool 24 downward in FIG.

As a result, the opening area of the hot water inlet 11 is reduced, and at the same time, the water inlet 12 is opened.
Then, the opening area ratio of the hot water inlets 11 and 12 is determined by the temperature sensing element 16 so that the flow ratio of hot water to water becomes the set temperature, and the mixed hot water flows from the port 27 of the casing 17 to the valve unit 10. Through the port 13 to the side of the shower handle 3 (see FIG. 3) which also serves as a water outlet.

When it is desired to adjust the set temperature of the hot water to be discharged, the temperature adjusting handle 4 is rotated, and the screw 18 is moved in the vertical direction in FIG. What is necessary is just to change the opening area ratio between the water inlet 12 and the water inlet 12.

[0010] In addition, in order to stop the water, the flow handle 5
Is rotated, and the casing 1 is
7, the both ends of the spool 24 may be brought into contact with the hot water side sheet 23 and the water side sheet 21 and closed.

[0011]

In the conventional faucet 2 for showering hair, the water-stop sheet 21 and the hot-water sheet 23 and the spool 24 stop the water upstream of the mixing chamber. Therefore, when the spool 24 is opened, the inflow port 11 on the hot water side is first opened by the urging force of the return spring 25, so that a desired water discharge temperature cannot be obtained immediately.

Further, the urging force of the return spring 25 acts on the flow handle 5 via the spool 24, the water-side seat 21, the casing 17 and the housing 15, so that the opening / closing operation of the flow handle 5 is disadvantageously heavy.

Further, the urging force of the return spring 25 acts to accelerate the abrasion of the screw portion, so that the screw portion of the housing 15 and the casing 17 must be replaced in a short period of time.

[0014]

DISCLOSURE OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems and has been improved and eliminated. The present invention reduces the operating force of a flow rate handle and the wear of a screw portion, and enables a desired water discharge even at the beginning of use. It is intended to provide a faucet whose temperature can be obtained immediately.

According to the first aspect of the present invention, there is provided a temperature control handle and a flow rate control handle provided on the same end face on the same axis of a tubular faucet body. In the hot and cold water mixing faucet provided with, the water faucet moves between the hot water inlet and the water inlet provided near the end faces of the faucet body opposite to the two handles, and always keeps the two inlets in the open state. The thermo-cartridge is mounted with a spool to be moved and a temperature-sensitive element for moving the spool, and the thermo-cartridge is mounted in the faucet body to fix the rear end of the thermo-cartridge to the faucet body, thereby controlling the flow rate. A cylindrical valve body which is screwed into a cylindrical housing integrally connected to the handle and serrated and connected to the inner peripheral surface side of the faucet body to move up and down is provided between the middle part of the faucet body and the handle side end face. Attached between the cylindrical valve body The outlet of the mixed water provided in the middle part of the faucet body is controlled to be opened and closed at the end, and a part of the upper side of the thermo cartridge is fitted in the lower side of the tubular valve body, and the inner periphery of the thermo cartridge is A hot and cold water mixing faucet, wherein a sealing member is provided between the surface side and the outer peripheral surface side of the temperature sensing element.

The means of claim 2 adopted by the present invention is as follows.
2. The hot and cold water mixing faucet according to claim 1, wherein the tubular valve body is vertically divided into two parts and integrally connected.

[0017]

According to the hot water mixing faucet of claim 1 of the present invention,
As shown in the embodiment of FIG.
And 12 are always kept open by a spool 24. The water stop state is indicated by the housing 28
The lower end side of the cylindrical valve body 36 connected via the through hole is seated on the outlet 9 for the mixed water.

Therefore, the urging force of the return spring for urging the spool 24 does not act on the threaded portion of the housing 28 and is completely irrelevant. Therefore, the screw portion does not wear out early, and the opening / closing operation of the flow handle 5 does not become heavy. Also, the hot water and the water have reached the mixing chamber, and a desired water discharge temperature can be immediately obtained even at the initial stage of water discharge start.

Further, in the hot and cold water mixing faucet of the first aspect, as shown in the embodiment of FIG. 2, the spool 24 and the temperature sensing element 16 are housed in a thermo cartridge 39, and the thermo cartridge 39 is It is fixed to the plug body 6. Then, a part of the upper side of the thermo cartridge 39 is fitted into the cylindrical valve body 36, and a seal member 41 is provided between the inner peripheral surface of the thermo cartridge 39 and the outer peripheral surface of the temperature sensing element 16. doing. Thus, the cylindrical valve element 36 receives the supply pressure of the hot water only at the lower end surface thereof, and the pressure receiving area of the pressure acting upward is reduced, so that the operability of the flow handle 5 can be reduced. .

Furthermore, in the hot and cold water mixing faucet according to the second aspect, in addition to the configuration of the first aspect, the tubular valve body is vertically divided into two and integrally connected. By dividing the tubular valve body into two parts, baking of the lower end of the tubular valve body becomes convenient, and the upper half that does not come into contact with water is made of brass or resin to provide rust prevention and inexpensive ones. It is possible.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as those in the conventional case denote the same members.

FIG. 1 is not a technique according to an embodiment of the present invention.
However, this is a technology on which the embodiment of the present invention shown in FIG. 2 is based.
For convenience of explanation, the hot and cold water mixing faucet 35 shown in FIG.
Will be described. As shown in FIG.
, A housing 2 rotatably attached to a flow handle 5 via a double serration ring 14.
A cylindrical valve element 36 is screwed into the inner peripheral surface side of 8, and the outer peripheral surface side of the cylindrical valve element 36 is serrated and connected to the inner peripheral surface side of the faucet main body 6. In the case of this embodiment, the flow handle 5 and the housing 28 only rotate and do not move up and down.

A valve seat 37 is attached to the lower end surface of the cylindrical valve body 36, and the valve seat 37 is disposed so that it can be seated on the hot water outlet 9 of the faucet body 6. By providing the valve seat 37 on the side of the cylindrical valve element 36 that moves up and down, it is possible to reduce the wear of the valve seat 37 due to the repetition history. The temperature-sensitive element 16 is slidably inserted into the cylindrical valve element 36, and the cylindrical valve element 36 also serves as a casing of the temperature-sensitive element.

The spindle 20 of the temperature control handle 4 is
A cylindrical portion is formed on the lower side, and a screw 18 is screwed on the inner peripheral surface side of the cylindrical portion. The screw 18 has a lower outer peripheral surface serrated and connected to an inner peripheral surface of the cylindrical valve body. Further, in the hot and cold water mixing faucet 35, the hot water inlet 7 is formed on the lower end surface side of the faucet main body 6. Thus, the hot water supply pipe 31 is located immediately below the hot / water mixing faucet 35, and there is no limitation on an extra space.

In the hot and cold water mixing faucet 35 constructed as described above, when the flow handle 5 is rotated, the housing 28 integrally connected thereto is rotated, and the inner peripheral surface of the housing 28 is rotated. Since the cylindrical valve element 36 screwed into the main body is serrated with the faucet main body 6 on the outer peripheral surface side,
The cylindrical valve element 36 moves up and down. By this vertical movement, the valve seat 37 on the lower end surface side is moved to the outlet 9 of the faucet body 6.
The user controls the flow rate by opening and closing the outlet 9.

On the other hand, when the temperature control handle 4 is rotated, the screw 18 screwed to the inner peripheral surface side of the spindle 20 integrally connected thereto moves up and down, and the temperature sensing element 16 and the spool 24 are moved. By moving the hot water up and down, the opening area ratio between the hot water inflow port 11 and the water inflow port 12 is controlled, and the temperature of the hot water flowing out is adjusted.

Next, referring to the vertical sectional front view of FIG.
A hot water mixing faucet 38 according to the embodiment of the present invention will be described. In this embodiment, the inlets 7 and 8 for hot and cold water and the outlet 9 for mixed water have the same configuration as the conventional one shown in FIG. 4, and a cylindrical valve element 36 formed by a temperature control handle 4 and a flow rate handle 5 and a screw The drive mechanism 18 has the same configuration as that of the technology which is the premise of the present invention shown in FIG.

The characteristic technology of the hot and cold mixing faucet 38 is as follows. That is, the spool 24 and the temperature sensing element 16 are incorporated in the thermo cartridge 39, and the thermo cartridge 39 is attached to the plug 22 and the union nut 4.
At 0, it is fixed to the faucet main body 6.

A seal member 41 is provided between the inner peripheral surface on the upper side of the thermo cartridge 39 and the outer peripheral surface of the thermosensitive element 16. The thermocartridge 39 thus configured is configured such that a part of an upper side thereof is fitted in a lower side of the cylindrical valve body 36 in a state of being fixed to the faucet main body 6.

By adopting such a structure of the temperature sensing portion, the thermo cartridge 39 accommodating the spool 24 and the temperature sensing element 16 can be inserted into the faucet body 6 simply by loosening the screw fitting of the union nut 40. Can be extracted from
Easy maintenance.

The pressure acting on the mixing chamber in the thermo cartridge 39 is such that the upward pressure in FIG. The pressure acting on the seal member 41 is received by the faucet body 6 via the thermo cartridge 39.

Therefore, the pressure acting in the mixing chamber does not significantly hinder the downward movement of the cylindrical valve body 36, and the operability of the cylindrical valve body 36 can be reduced. That is, the pressure receiving area of the cylindrical valve body 36 can be reduced, and smooth operation of the cylindrical valve body 36 can be secured.

Further, according to the embodiment of the present invention shown in FIG.
The water mixing faucet 38 is connected to the housing 2 of the flow handle 5.
An anti-rotation ring 42 is mounted between the spindle 8 and the spindle 20 of the temperature control handle 4 to prevent direct contact between them and prevent co-rotation. This anti-rotation ring 42
The lower end of the cylindrical valve body is engaged and recessed with the upper end of the cylindrical valve body 36 and locked.

Further, in the hot and cold water mixing faucet 38 according to the embodiment of the present invention , the cylindrical valve body 36 is divided into two in the vertical direction. This is because if not divided into two parts, the overall length becomes too long, which is inconvenient when baking the valve seat 43 on the lower end surface side. That is, the baking of the tubular valve body 36 and the valve seat 43 is performed by putting the whole of the tubular valve body 36 into a heating mold, heating the mold, pouring rubber, and performing baking. This is because, if the total length of the valve body 36 is long, the thickness of the heating mold becomes too large, and the thermal efficiency is deteriorated.

Further, the cylindrical valve body 3 is divided into upper and lower parts.
6 can be made of bronze in the lower half in contact with water, and can be made of brass or resin in the upper half that is not in contact with water to provide a rustproof and inexpensive one.

In addition, the valve seat 43 has a double annular rib formed on an end face of the valve seat 43 which comes into contact with a seating portion on the faucet main body 6 side so as to eliminate poor sealing. The ribs may have more multiplex structures.

Further, the hot-water mixing faucet 38 has drain holes 44 and 45 penetrating inside and outside of the faucet main body 6 and the non-water-contacting portion of the tubular valve body 36 which do not come into contact with water. This is because water enters the non-water-contacting portion of the hot-water mixing faucet 38 immersed in the water tank in the pressure test at the factory before the hot-water mixing faucet 38 is shipped, and may stay there. Water may make each steering wheel drive mechanism astringent,
This was devised to drain naturally.

[0038]

As described above, in the present invention,
A housing or cylinder which is provided with a spool for determining a mixing ratio of hot water and water so that the hot water inlet of the faucet body and the water inlet are always kept open, and which is vertically moved by a flow handle at the outlet of the mixed water. Since the lower end face of the valve body is disposed so as to be in contact therewith, water can be stopped downstream of the mixing chamber, and hot water mixed in the mixing chamber is always discharged. Even if it is, the desired water discharge temperature can be obtained immediately.

Further, since the urging force of the return spring is not directly transmitted to the flow handle, the screw portion of the housing is worn out early due to the urging force, and the operating force of the flow handle becomes heavy. Nor.

Further, according to the present invention, the thermocartridge containing the spool and the thermosensitive element is fixed to the faucet main body, and the outer peripheral surface of the thermosensitive element and the inner peripheral face of the thermocartridge are fixed. Since the seal member is disposed in the upper portion of the thermo cartridge and a part of the upper side of the thermo cartridge is fitted in the cylindrical valve body, the upward pressure acting on the mixing chamber can be received by the seal member, which acts on the cylindrical valve body. It is possible to reduce the pressure receiving area of the upward pressure to reduce the operability.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a hot and cold water mixing faucet according to a technology on which the present invention is based .

2 is a longitudinal sectional front view of the mixing valve according to actual施例of the present invention.

FIG. 3 is a front view showing a basin using the conventional hot and cold water mixing faucet.

FIG. 4 is a vertical sectional front view of a conventional hot and cold water mixing faucet.

[Explanation of symbols]

4 ... Temperature control handle 5 ... Flow control handle 6 ... Faucet body 7 ... Hot water inlet 8 ... Water inlet 9 ... Outflow of mixed water 10 ... Valve unit 11 ... Hot inlet port 12 ... Water inflow port 13 ... Outflow of mixed water Port 16: Temperature-sensitive element 17: Casing 18: Screw 20: Spindle 24: Spool 28: Housing 29: Valve seat 35: Hot water mixing faucet 36: Cylindrical valve body 37: Valve seat 38: Hot water mixing faucet 39 ... thermo cartridge 41 ... seal member

Continuation of front page (72) Inventor Yukio Hashimoto 5-1-1 Koiehoncho, Tokoname-shi, Aichi Inax Inc. (56) References JP-A-60-249784 (JP, A) JP-A-46-2734 ( (JP, A) Shokai Sho-59-97757 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16K 11/07 F16K 31/68

Claims (2)

(57) [Claims] 1. A hot and cold water mixing faucet having a temperature adjusting handle and a flow rate control handle provided on the same end surface on the same axis of a tubular faucet main body, wherein the faucet main body is opposite to the two handles. A spool that moves between a hot water inlet provided near the end face and a water inlet and always holds the two inlets in an open state, and a thermosensitive element that moves the spool is mounted in a thermo cartridge. The thermo cartridge is mounted in the faucet body, the rear end of the thermo cartridge is fixed to the faucet body, screwed into a cylindrical housing integrally connected to the flow control handle, and the A cylindrical valve body that is serrated on the peripheral surface and moves up and down is attached between the middle part of the faucet body and the end face on the handle side, and the tip part of the tubular valve body is attached to the middle part of the faucet body. The outlet of the mixed water provided is controlled to open and close, A part of the upper side of the cartridge is fitted inside the lower part of the tubular valve body, and a seal member is provided between the inner peripheral side of the thermocartridge and the outer peripheral side of the temperature sensing element. Hot water mixing faucet. 2. The hot and cold water mixing faucet according to claim 1, wherein said tubular valve body is divided into upper and lower parts and integrally connected.