JPH0453495Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a hot and cold water mixing faucet, and particularly to a hot and cold water mixing faucet that is excellent in operability and durability.

[Prior art and its problems]

Conventionally, hot and cold water mixing faucets have been developed that allow you to mix hot and cold water in any amount by operating a single lever to obtain water at the desired temperature, and also to change the flow rate at will. Usually, the structure is as shown in FIG.
The case 35 is fixed to the body 21 with bolts 22.

Inside the case 35, there is a lower disk 34 located above the body 21 and provided with a packing 37, and an upper disk 33 located above the lower disk 34.
is provided.

Furthermore, sliders 29, 30, and 31 are provided in the holes provided in the upper part of the case 35, and sliders 30 and 31 are provided in the holes provided in the upper surface of the upper disk 33.
2 includes an arm 2 supported by a pin 28;
7 is located at the lower end, and this arm 27 is arranged to be rotatable and swingable with respect to the body 21, and the lever 23 is connected to the upper end of this arm 27 via an adapter 26 and a set screw 24. installed.

Note that 25 is a cover that covers the upper part of the body 21.

Regarding the upper disk 33 and the lower disk 34, the upper disk 33 is slidable on the upper part of the lower disk 34, and the lower disk 34 is provided with a hot water inlet 34a, a water inlet 34b, and a mixed water outlet 34c. In addition, a cavity 33a is formed in the upper disk 33.
The operational relationship between the upper disk 33 and the lower disk 34 is as shown in FIG.

That is, when the upper disk 33 is rotated in one direction as shown in FIG. As a result, the hot water from the hot water inlet 34a flows out from the mixed water outlet 34c via the cavity 33a.

In addition, in the case of FIG. 5b, when both hot water and water flow out as a mixture, the upper disk 3
If 3 moves to the right, the water inlet 34 is closer to the water inlet 34a than the hot water inlet 34a.
The opening area on the side b becomes larger, the temperature of the hot water flowing out becomes lower, and if it moves to the left, the hot water inlet 34a
, the opening area is larger and the temperature of the hot water flowing out is higher.Furthermore, if the upper disk 33 moves upward in the drawing, the hot water inlet 34a and the water inlet 34b
The opening area becomes smaller and the flow rate flowing out is restricted.

Further, Fig. 5c shows the case where only water flows, and Fig. 5d shows the case when the case is closed.

On the lower side of the lower disk 34 that operates as described above, a gasket 37 made of a rubber-like elastic body is adhered to each of the hot water inlet 34a, the water inlet 34b, and the mixed water outlet 34c. Bolt 2 fixing the case 35
2 is pressed against the body 21.

Thereby, the space between the gasket 37 and the body 21 is sealed to prevent leakage of hot water, water, etc.

Then, due to the reaction force of the gasket 37 when the gasket 37 is pressed against the body 21,
The space between the upper disk 33 and the lower disk 34 is sealed.

In this case, the contact surfaces 34A and 33A between the lower disk 34 and the upper disk 33 are precisely finished with a surface roughness of 1μRz or less and a flatness of 1 bounce or less with helium light. Improved adhesion to prevent water leakage.

However, since the contact surfaces 34A and 33A between the lower disk 34 and the upper disk 33 are precisely finished to the same surface roughness (1 μRz or less), the upper disk 33 is
When sliding 3, the contact surfaces 34A, 3 of both
Ringing occurs in 3A, causing the upper disk 33 and lower disk 34 to stick together, and as a result,
There was a problem in that the operating force of the lever 23 for sliding the upper disk 33 became large, resulting in poor operability as a hot water mixing faucet.

This invention solves the problems of the conventional ones as mentioned above.When the upper disk slides, ringing does not occur on the contact surface between the lower disk and the upper disk, and it always has excellent operability. The purpose is to provide a hot and cold water mixing faucet that provides the following.

[Means for solving problems]

In order to solve the above problems, this device is located at the upper part of the body and has a hot water inlet, a water inlet, and a mixed water outlet, and is disposed in contact with the upper surface of the lower disk. an upper disk that is slidable against the hot water inlet and a cavity that opens toward the lower disk; The hot water and water mixing faucet is configured to flow out the hot water and water from the mixed water outlet through the cavity, and at this time, the inflow amount of the hot water and water is selected according to the sliding position of the upper disk, The surface roughness of the periphery of the hot water inlet, water inlet, and mixed water outlet on the upper surface of the lower disk is made finer, and the surface roughness of the other parts other than the periphery is made rougher than the surface roughness of the periphery. This is what I did.

[Effect]

By adopting the above-mentioned means, this invention
Ringing does not occur on the contact surface between the upper disk and the lower disk during sliding.

〔Example〕

Embodiments of this invention shown in the drawings will be described below.

FIG. 1 shows a hot water mixing faucet according to this invention, in which a case 15 is provided on the upper part of a body 1, and this case 15 is fixed to the body 1 with bolts 2, and Inside the case 15 are a lower disk 14 located above the body 1 and provided with a gasket 17 on the lower surface, and the lower disk 1.
An upper disk 13 located above 4 is provided.

Further, sliders 9, 10, 11 are provided in the holes provided in the upper part of the case 15, and a slider 12 provided in the upper surface of the upper disk 13.
The lower end of an arm 7 supported by a pin 8 is located at the arm 7, and this arm 7 is arranged to be rotatable and swingable with respect to the body 1. A lever 3 is attached via an adapter 6 and a set screw 4.

Note that 5 is a cover that covers the upper part of the body 1.

Regarding the upper disc 13 and the lower disc 14, the upper disc 13 is in slidable contact with the upper part of the lower disc 14, and the lower disc 14 has a hot water inlet 14a and a water inlet 14b.
and a mixed water outlet 14c is drilled,
A cavity 13a is formed in the upper disk 13. Further, on the lower side of the lower disk 14, a gasket 17 made of a rubber-like elastic body is attached to each of the hot water inlet 14a, the water inlet 14b, and the mixed water outlet 14c, and this gasket 17 is attached to the case 15. is pressed against the body 1 by tightening the bolt 2 that fixes the gasket 17, thereby sealing the space between the gasket 17 and the body 1, preventing leakage of hot water, water, etc. Due to the reaction force of the gasket 17 when it is pressed against the body 1, the space between the upper disk 13 and the lower disk 14 can be sealed.

Note that the upper disk 13 and the lower disk 1
The operational relationship with 4 is as shown in FIG. 3, similar to the conventional one, and detailed explanation thereof will be omitted.

In the hot water mixing faucet according to the present invention configured as described above, the contact surfaces 13A and 14A between the upper disk 13 and the lower disk 14 each have a surface roughness of 1 μRz.
Below, the flatness is finished to one bounce or less with helium light, and the contact surface 14A of the lower disk 14 is the peripheral edge 14 of the hot water inlet 14a, the water inlet 14b, and the mixed water outlet 14c, as shown in FIG.
d, 14e, 14f have a surface roughness of 1μRz or less,
The flatness is finished with helium light to less than 1 bound, and the other parts 14g excluding the peripheral edges 14d, 14e, and 14f are finished with a surface roughness of about 3 to 6 μRz, making them rougher than the peripheral edges 14d, 14e, and 14f. It has been done.

Therefore, since ringing does not occur on the contact surfaces 13A and 14A between the upper disk 13 and the lower disk 14 when the upper disk 13 slides, as in the conventional case, the operation of the lever 3 that slides the upper disk 13 is eliminated. The water flow is always smooth, and excellent operability as a hot/cold water mixing faucet can be obtained.

[Effect of idea]

By configuring this idea as described above,
Ringing does not occur on the contact surface between the upper disc and the lower disc, and it has excellent effects such as always being able to obtain smooth operability as a hot/cold water mixing faucet, and improving durability. It is something.

[Brief explanation of the drawing]

Fig. 1 is a schematic vertical sectional view showing an embodiment of the hot water mixing faucet according to this invention, Fig. 2 is a schematic view showing the contact surface of the lower disk of the one shown in Fig. 1, Figs. 3 a, b, c, d is a schematic explanatory diagram showing the operational relationship between the upper disc and the lower disc of the one shown in Figure 1; Figure 4 is a schematic vertical sectional view showing a conventional hot water mixing faucet; Figures 5 a, b, c, d. 5 is a schematic explanatory diagram showing the operational relationship between the upper disk and the lower disk of the device shown in FIG. 4. FIG. 1,21...Body, 2,22...Bolt,
3, 23... Lever, 4, 24... Set screw,
5, 25... Cover, 6, 26... Adapter,
7,27...Arm, 8,28...Pin, 9,1
0, 11, 12, 29, 30, 31, 32...Slider, 13, 33...Upper disk, 13a,
33a...Cavity, 13A, 14A, 33
A, 34A...Contact surface, 14, 34...Lower disk, 14d, 14e, 14f...Periphery, 14
g... Portion excluding peripheral area, 14a, 34a... Hot water inlet, 14b, 34b... Water inlet, 14c, 34
c... Mixed water outlet, 15, 35... Case, 1
7,37...Patsukin.

Claims (1)

[Scope of utility model registration request] a lower disk located at the upper part of the body and having a hot water inlet, a water inlet, and a mixed water outlet; and an upper disk provided with a cavity that opens toward the lower disk side, and the upper disk is slid against the lower disk to mix the hot water and water flowing in from the hot water inlet and the water inlet through the cavity. The water flows out from the water outlet, and at this time, the amount of hot water and water flowing in is selected according to the sliding position of the upper disk. A hot water mixing faucet characterized in that the surface roughness of the peripheral edge of the mixed water outlet is made fine, and the surface roughness of other parts other than the peripheral edge is made rougher than the surface roughness of the peripheral edge.