JP2884215B2 - Hot water mixing faucet handle rotation prevention structure - 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. 4, in a basin 1 provided with a faucet for showering 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. 5 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 and 1 are provided at positions corresponding to the hot water inlets 7 and 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.

[0007] In the conventional shower faucet 2 for hair washing constructed as described above, when the flow handle 5 is opened, 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 boats 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 shower handle 3 (see FIG. 4) 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. In order to stop the water, the flow handle 5 is rotated, the casing 17 is lowered via the housing 15, and both ends of the spool 24 are brought into contact with the hot water side sheet 23 and the water side sheet 21, respectively. do it.

[0010]

However, the spindle 20 of the temperature control handle 4 and the housing 15 of the flow handle 5 are in contact with each other, and both are rotating members. There is a drawback that the other rotates a little when it rotates. That is, there is a disadvantage that the set temperature of the mixed water is changed without permission or the discharge flow rate is changed without permission due to the co-rotation of the spindle 20 and the housing 15.

[0011]

SUMMARY 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 provides a water / water mixing faucet which can prevent co-rotation of a flow handle and a temperature control handle. It will not be provided.

Means adopted by the present invention in order to solve the above-mentioned problems is that the faucet body having a cylindrical shape has one end face on the same axis and a peripheral face immediately adjacent to the same axis . temperature control scan configuring temperature regulating handle and mounted so as not to polymerization of flow control handle, the inner and outer double tubular coupling portion attached to the faucet body
Stop via pindle and flow control handle housing
In the hot and cold water mixing faucet for controlling the axial position of the water valve body and the spool valve body , the temperature control spindle and the flow control hand are provided.
An anti-rotation ring is arranged between the cylindrical coupling part of the watertight housing and the cylindrical coupling part to prevent direct contact between the inner and outer double cylindrical coupling parts . A handle rotation preventing structure of a hot and cold water mixing faucet, wherein the handle is rotatably fitted to an upper end surface side.

[0013]

According to the hot and cold water mixing faucet of the present invention, as shown in the embodiment of FIG.
An anti-rotation ring 29 is mounted between the flow handle 5 and the housing 31. This anti-rotation ring 29
It is formed of an inexpensive POM resin (trade name: Duracon) having a low coefficient of friction to reduce the contact friction resistance between the spindle 20 and the housing 31.
In addition, the lower end surface of the rotation preventing ring 29 is
The rotation of the spindle 20 is restricted by the concave and convex engagement with the upper end surface of the spindle 20, and the spindle 20 and the hanging 31 never rotate together.

[0014]

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.

FIGS. 1 to 3 relate to an embodiment of the present invention. FIG. 1 is a longitudinal sectional front view of a hot / water mixing faucet 28, and FIG. 3 is a front view of a semi-longitudinal section showing an upper half of a cylindrical valve body 30 which is divided into upper and lower parts. As shown in the figure, in this embodiment,
A housing 31 having upper and lower two-stage tubular sections of different diameters is rotatably attached to the flow handle 5 via a double serration ring 14. In the housing 31, serrations provided on the outer peripheral surface of the upper small-diameter cylindrical portion are engaged with the double serration ring 14 of the flow handle 5.

A cylindrical valve body 30 as a water shutoff valve body is screwed to a screw portion provided on the inner peripheral surface of the lower large-diameter cylindrical portion of the housing 31. The tubular valve body 30 has a structure that is vertically divided into two parts, and the upper tubular body 30a has a screw portion 32 and a hexagonal surface 33 formed in the middle of the outer peripheral surface as shown in FIG. The hexagonal surface 33 is engaged with a hexagonal hole formed on the inner peripheral surface of the faucet main body 6 to stop the rotation of the cylindrical valve body 30. Therefore, when the flow handle 5 is rotated, the double serration ring 14 and the housing 31 rotate, but the cylindrical valve body 30 only moves up and down.

A valve seat 34 is attached to the lower end side of the lower cylindrical body 30b of the cylindrical valve body 30. The valve seat 34 can be seated on the hot water outlet 9 of the faucet body 6. The valve seat 34 has a double annular rib formed on an end surface of the valve seat 34 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.

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 hexagonal outer peripheral surface on the lower side, and is engaged with a hexagonal hole provided on the inner peripheral surface side of the cylindrical valve body 30 to prevent rotation.

In the hot and cold water mixing faucet 28, the temperature adjusting handle 4 is provided between the outer peripheral surface of the spindle 20 and the flow rate handle 5 on the inner peripheral surface of the housing 31 as shown in FIG. The rotation preventing ring 29 shown in FIG. 1 is provided to prevent direct contact between the two. The anti-rotation ring 29 is formed of a material such as POM (trade name: Duracon) having a small coefficient of friction, has protrusions 35 at predetermined intervals on a lower end surface side, and is formed of a cylindrical valve body 30 shown in FIG. Upper cylinder 3
The recesses 36 formed on the upper end surface side of Oa are fitted into the concave and convex portions.

As described above, since the rotation of the cylindrical valve body 30 is prevented by the hexagonal engagement with the faucet main body 6, the rotation preventing ring 29, which is fitted into the concave and convex, does not rotate. Stop has been made. Therefore, the temperature control handle 4 and the flow rate handle 5 do not interfere with each other, and when the temperature control handle 4 is operated, the discharge flow rate is changed without permission or the flow rate handle 5 is operated. Furthermore, there is no inconvenience that the temperature of the discharge water is changed without permission.

In the hot and cold water mixing faucet 28 of this embodiment, the spool 24 and the temperature sensing element 16 are incorporated in a thermo cartridge 37, and the thermo cartridge 37 is
The faucet 22 and the union nut 38 are fixed to the faucet body 6.

A seal member 39 is provided between the inner peripheral surface on the upper side of the thermo cartridge 37 and the outer peripheral surface of the temperature sensing element 16. The thermo cartridge 37 thus configured is configured such that a part of the upper side thereof is fitted in the lower cylinder 30 b of the tubular valve 30 in a state of being fixed to the faucet main body 6.

With such a structure of the temperature sensing part, the thermo cartridge 37 containing the spool 24 and the temperature sensing element 16 can be moved inside the faucet body 6 simply by loosening the screw fitting of the union nut 38. Can be extracted from
Easy maintenance.

The pressure acting on the mixing chamber in the thermo cartridge 37 is such that the upward pressure in FIG. The pressure acting on the seal member 39 is received by the faucet body 6 via the thermo cartridge 37. Therefore, the pressure acting on the mixing chamber does not significantly hinder the downward movement of the cylindrical valve body 30, and the operability of the cylindrical valve body 30 can be reduced. That is, the pressure receiving area of the tubular valve body 30 can be reduced, and smooth operation of the tubular valve body 30 can be ensured.

As described above, the tubular valve body 30 is divided into two parts vertically. However, if the cylindrical valve body 30 is not divided into two parts, the overall length becomes too long, and the valve seat sheet 34 is provided on the lower end surface side. This is because it is inconvenient when baking.
That is, the baking of the tubular valve body 30 and the valve seat 34 is performed by putting the entirety of the tubular valve body 30 into a heating mold, heating the mold, pouring rubber, and performing baking. This is because if the total length of the valve body 30 is long, the thickness of the heating mold becomes too large, and the thermal efficiency is deteriorated. In consideration of this, in the present embodiment, the baking of the valve seat 34 is performed by the lower cylindrical body 30b.

Further, the cylindrical valve body 3 is divided into upper and lower parts.
The lower half of the portion that contacts the water can be made of borane, and the upper half of the portion that does not contact the water can be made of brass or resin to provide a rustproof and inexpensive material.

Further, in the hot and cold mixing faucet 28, drainage holes 40 and 41 penetrating inside and outside are formed in a non-water-contacting portion of the faucet main body 6 and the cylindrical valve body 30 which is not in contact with water. This is because water enters the non-water-contacting portion of the hot-water mixing faucet 28 immersed in the water tank and stays in a pressure test at a factory before the hot-water mixing faucet 28 is shipped. Water may make each steering wheel drive mechanism astringent,
This was devised to drain naturally.

In the hot and cold water mixing faucet 28 constructed as described above, when the flow handle 5 is rotated, the housing 31 integrally connected thereto is rotated, and the inner peripheral surface side of the housing 31 is rotated. Since the cylindrical valve body 30 screwed into the outer peripheral surface is hexagonally fitted to the faucet body 6, the cylindrical valve body 30 moves up and down. By this vertical movement, the valve seat 34 on the lower end surface sits on or separates from the outlet 9 of the faucet main body 6, and controls the opening and closing of the outlet 9 to control the flow rate.

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. As described above, the rotation is prevented by the rotation prevention ring 29 during the operation of the handle.

By the way, the present invention is not limited to the above-described embodiment.
It is also possible to directly apply to the conventional hot and cold water mixing faucet 2 shown in FIG. What is important is that the present invention is applicable to a hot and cold water mixing faucet in which a temperature control handle 4 and a flow rate handle 5 are attached to one end of the faucet body 6 on the same axis.

[0032]

As described above, in the present invention,
When the temperature control handle is operated without the rotation of the handle mechanism because the anti-rotation ring that prevents direct contact between the spindle of the temperature control handle and the housing of the flow handle is installed. The discharge flow rate is not changed at will, or the temperature of the discharge water is changed without operating the flow rate handle.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a hot and cold water mixing faucet according to the present invention.

FIG. 2 is a semi-longitudinal sectional front view of a rotation preventing ring of the hot and cold water mixing faucet according to the present invention.

FIG. 3 is a front view of a semi-longitudinal section showing an upper half of a tubular valve body of a hot and cold water mixing faucet according to the present invention.

FIG. 4 is a front view showing a basin using the conventional hot and cold water mixing faucet.

FIG. 5 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 ... Water faucet body 20 ... Spindle 29 ... Rotation prevention ring 30 ... Cylindrical valve body (water shutoff valve body) 31 ... Housing

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16K 31/60 F16K 11/00 F16K 35/06

Claims (1)

(57) [Claims] [Claim 1] An end face of the same axis of the faucet body exhibiting a cylindrical
Temperature control constitutes a to its nearest peripheral surface side, mounted so as not to polymerize and temperature adjusting handle and flow control handle, the inner and outer double tubular coupling portion attached to the faucet body spindle
Valve body through the valve and the housing of the flow control handle
And in mixing valve for controlling the axial position of the spool valve body, c of the temperature adjustment spindle and the flow control handle
An anti-rotation ring is arranged between the cylindrical joint with the housing to prevent direct contact between the inner and outer double cylindrical joints , and the lower end of the anti-rotation ring is the upper end of the water shutoff valve body. A handle rotation preventing structure for a hot and cold water mixing faucet, which has a concave-convex fitting on the side.