JP2002250454A - Single-lever hot-water mixed water plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a single-lever type hot-water mixed water plug, capable of always enabling comfortable operation and enhancing durability. SOLUTION: The plug is a single-lever type hot-water mixed water plug, which has laminated structure consisting of a first ceramic fixed valve plate 6, a movable valve plate 7 and a second fixed valve plate 8, and furthermore, which is configured so as to enable adjustment of the temperature and flow of mixed water by actuating the movable valve plate 7 by an operating handle 2 and configures at least one of the fixed valve plate 6, the movable valve plate 7 and the second fixed valve plate 8 as a ceramic or a resin of self- lubricating type.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-water mixing faucet for mixing and supplying hot water and hot water, and more particularly to a single-lever hot-water mixing water with improved sliding performance and life between valve plates. For stoppers.

[0002]

2. Description of the Related Art As an example of a hot and cold water mixing faucet for mixing hot water and water to supply mixed water, two or three ceramic fixed valve plates and a movable valve plate are overlapped to form a valve unit. Conventionally, a single-lever type, which is configured so that a movable valve plate of such a valve unit can be moved by an operation handle to change a water / hot water ratio, has been used. In this single-lever hot and cold water mixing faucet, the temperature and flow rate of the mixed water can be changed by changing the degree of matching of the flow passage holes formed in each of the fixed valve plate and the movable valve plate.

[0003] In such a single-lever type hot and cold water faucet, it is necessary to set a high sliding property between the fixed valve plate and the movable valve plate so that the operating handle can be handled with a small operating force. . For this reason, for example, grease is applied between the fixed valve plate and the movable valve plate to improve the slidability between the valve plates. In some cases, grease is applied not only between the fixed valve plate and the movable valve plate but also on other sliding parts. If grease is applied in this manner, the sliding property between the fixed valve plate and the movable valve plate is enhanced, and light operation is possible.

[0004] In particular, in a configuration in which three valve plates are stacked, a light operating force is obtained by applying grease not only between the valve plates but also between the valve plates and the case of the valve unit. I was able to.

[0005]

However, if grease is applied to the sliding or rotating valve body as described above, the grease may be mixed into the mixed water. Also, if the grease is hardened or peels off, it greatly affects the sliding property between the fixed valve plate and the movable valve plate, the sliding property is remarkably reduced, and the life of the valve unit is shortened. And the stability of quality may not be maintained. In the case of a structure in which three valve plates are stacked, grease is applied between the valve plates and the case, so that the operation stability of the valve body in the case is greatly reduced. Become. In addition, in the case of a structure in which three valve plates are laminated, grease is applied not only between the valve plates but also between the valve plate and the case. The assembly work of the unit becomes complicated, and the manufacturing cost of the valve unit may increase.

[0006] As described above, the conventional hot and cold water mixing faucet using grease has a problem that the grease flows out to cause a malfunction and shorten the life.

SUMMARY OF THE INVENTION An object of the present invention is to provide a single lever type hot and cold water mixing faucet which can always operate lightly and can improve durability.

[0008]

The present invention has a laminated structure of an uppermost valve plate, an intermediate valve plate and a lowermost valve plate, and operates at least one valve plate by an operation handle. A single-lever hot-water mixing faucet in which the temperature and flow rate of mixed water can be adjusted, wherein at least one of the three valve plates is made of a self-lubricating material. To provide.

[0009] Further, it has a laminated structure of an uppermost valve plate, an intermediate valve plate, and a lowermost valve plate, and fixes the uppermost valve plate and the lowermost valve plate, It is also characterized in that the valve plate is made movable, and the temperature and flow rate of the mixed water can be adjusted by operating the valve plate of the intermediate layer with an operation handle.

In this case, at least one of the uppermost valve plate, the intermediate layer valve plate and the lowermost valve plate can be made of a self-lubricating material.

In each of the above structures, the valve plate of the intermediate layer can be made of a self-lubricating material.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has a laminated structure of an uppermost valve plate, an intermediate valve plate and a lowermost valve plate, and fixes the uppermost valve plate and the lowermost valve plate. At the same time, the valve plate of the intermediate layer is made movable, and the temperature and flow rate of the mixed water can be adjusted by operating the valve plate of the intermediate layer with an operation handle. For this reason, the top, middle and bottom valve plates are combined, so fixing the top and bottom valve plates eliminates the need to apply grease to the valve unit case. The amount of application can be reduced. If the valve plate of the intermediate layer is made of a self-lubricating material, the slidability of the valve plate of the intermediate layer is improved, and at the same time, grease is not required. be able to.

[0013]

An embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are schematic views of a main part of a single-lever type hot / water mixing faucet A of the present invention. FIG. 1 is a longitudinal sectional view showing a valve closed state and FIG. 2 is a longitudinal sectional view showing a valve opened state. . In the figure, a single lever type hot / water mixing faucet A is a spout 1
The main body 1 includes a main body 1 that is rotatably provided, an operation handle 2 for operation disposed at an upper end of the main body 1, and a valve unit 3 operated by the operation handle 2.

FIG. 3 is an external perspective view of the valve unit 3, and FIG. 4 is an exploded perspective view of the valve unit 3. The valve unit 3 includes a case 4, a valve seat 5 connected to a lower end thereof, and a first top plate as a topmost valve plate incorporated in order from the upper end side of the case 4.
It comprises a fixed valve plate 6, a movable valve plate 7 as an intermediate layer valve plate, and a second fixed valve plate 8 as a lowermost valve plate as main members. The case 4 has a hollow cylindrical shape and has a valve seat 5.
Are formed with a hot water inflow hole 5a, a water inflow hole 5b, and a mixed water outflow hole 5c. The hot water inflow hole 5a and the water inflow hole 5b are connected to a hot water supply pipe and a water supply pipe (both not shown) provided in the main body 1, and the mixed water outflow hole 5c is connected to a flow path (not shown) to the spout 1a. Connected). First
The fixed valve plate 6, the movable valve plate 7, and the second fixed valve plate 8 are all made of ceramic, and the first fixed valve plate 6 is an annular body. The movable valve plate 7 has a concave portion 7a for mounting an adapter to be described later on the upper surface side, and communicates with the hot water inlet hole 5a, the water inlet hole 5b, and the mixed water outlet hole 5c of the valve seat 5 on the lower surface side. This is one in which a concave flow path 7b (see FIG. 1) is formed. The second fixed valve plate 8 has passage holes 8a, 8b, 8c communicating with the hot water inflow hole 5a, the water inflow hole 5b, and the mixed water outflow hole 5c of the valve seat 5, respectively. 9a is a packing for holding the first fixed valve plate 6 and the second fixed valve plate 8 in a case 4 in a watertight manner, and 9b is a case 4
A packing for preventing water from flowing out, a packing 9c for sealing the lower surface of the second fixed valve plate 8, and a packing 9d for sealing the lower end of the valve seat 5 are shown.

A lever 10 connected to the operation handle 2 is incorporated at the upper end of the case 4. The lever 10 is vertically penetrated through a pedestal 11 fixed to the upper end of the case 4, and is rotatably held at an intermediate position by a pin 11a. On the other hand, the concave portion 7 of the movable valve body 7
The lower end of the lever 20 is connected to the movable valve body 7 via a pin 12a mounted on the upper surface of the adapter 12.

In FIG. 1, when the operating handle 2 is depressed in a clockwise direction, the recess flow path 7b and the mixed water outflow hole 5c of the valve seat 5 are disconnected from each other, and there is no supply of the mixed water to the spout 1a. On the other hand, when the operating handle 2 is pulled up as shown in FIG. 2, the movable valve body 7 moves to the right via the lever 10,
The concave flow path 7b and the flow path holes 8a, 8b of the second fixed valve plate 8 are aligned by the maximum amount, and the flow rate to the spout 1a is set to the maximum. When the operation handle is turned in the left-right direction, the concave passage 7b of the movable valve plate 7 and the passage hole 8 of the second fixed valve plate 8 are opened.
The temperature of the mixed water can be adjusted by changing the positional relationship between a, 8b, and 8c. In the adjustment of the temperature of the mixed water, only the movable valve plate 7 moves around, so that the slidability is improved and handling with a light operating force becomes possible.

Here, the movable valve plate 7 is a self-lubricating ceramic, for example, a material whose surface is coated with DLC (diamond-like carbon) or a silicon carbide ceramic material. By using such a self-lubricating ceramic for the movable valve plate 7, the slidability between the movable valve plate 7, the first fixed valve plate 6 and the second movable valve plate 8 can always be kept high. . For this reason, it is not necessary to apply grease as in the related art, and the temperature and the flow rate can be adjusted by a light operation, and the life can be improved.

FIGS. 5A and 5B show details of the pedestal 11, wherein FIG. 5A is a front view, and FIG. 5B is an enlarged view of a main part surrounded by a circle A in FIG. The pedestal 11 has a pin hole 11 for inserting the pin 11a.
4 and a minute unevenness 11d is formed on the surface of the rim 11c at a position facing left and right, as is apparent from FIG.

FIG. 6 is a detailed view of a main part of the lever 10, and FIG. 7 is a front view of the click plate. The lever 10 is provided with a mounting hole 10a in which a pin 11a is inserted and a mounting hole 10b in which the click plate 13 is removably inserted and fixed. The click plate 13 is made of a synthetic resin, and has cutouts 13a at the lower ends on both left and right sides, and the outside of the cutouts 13a is an engagement piece 13b. When the lever 10 is mounted on the pedestal 11, the engaging piece 13b of the click plate 13 is
Are engaged with each other. In this embodiment, a flat plate made of a synthetic resin is used as the click plate 13, but a metal plate may be used instead, or the lever 10 and the click plate 13 may be integrally formed.

FIG. 8 shows the engagement piece 13 of the click plate 13.
It is explanatory drawing which shows the click operation | movement by engagement of the unevenness | corrugation 11d of b with the base 11. (A) shows the posture of the lever 10 when the flow path is closed, and the engaging pieces 13b of the click plate 13 are fitted into the concave portions of the unevenness 11d and are constrained in posture. When the lever 10 is rotated in the counterclockwise direction, as shown in FIG. 7, the engagement piece 13b defined by the notch 13a fits in the adjacent recess while riding over the projection of the unevenness 11d. This enables a click operation. That is, since the engagement piece 13b of the click plate 13 can be elastically deformed, the engagement piece 13b rotates while deforming so as to follow the surface of the unevenness 11d,
The click operation is enabled by the engagement of the engagement pieces 13b with the recesses of the unevenness 11d. In addition, although the operation resistance increases in the click operation by the click plate 13,
In the above configuration in which the operating force can be reduced by using the self-lubricating movable valve plate 7, by operating the operation handle 2, the movable valve plate 7 is connected to the first fixed valve plate 6 and the second fixed valve plate 6. The position is changed by sliding between the fixed valve plate 8 and the concave passage 7b of the movable valve plate 7 and the passage holes 8a, 8 of the second fixed valve plate.
b, the mixing ratio of water and hot water can be changed, and at the same time, the mixed water flowing toward the spout 1a depends on the degree of matching between the concave passage 7b and the passage holes 8a, 8b of the second fixed valve plate 8. The flow rate can be adjusted.

In the present invention, since the movable valve plate 7 is made of self-lubricating ceramic, the slidability between the first fixed valve plate 6 and the second fixed valve plate 8 can be maintained high. For this reason, the opening / closing operation by the operation handle 2 becomes light, and the usability is improved. Further, since grease is not applied between valve plates as in the related art, grease is not mixed into the mixed water, and sanitary use is possible. The self-lubricating ceramic can always maintain its lubricating performance high, and the first fixed valve plate 6 and the second fixed valve plate 8
The slidability between and can be kept good. Therefore, in the case of using grease, a malfunction is caused by depletion of the grease. On the other hand, light operation can be always maintained and durability can be improved.

In the above embodiment, the movable valve plate 7
Is a self-lubricating ceramic, but the first fixed valve plate 6 and the second fixed valve plate 8 can also be a self-lubricating ceramic. In such a configuration, the slidability of each of the valve plates 6, 7, 8 is further improved, so that a lighter operation handle 2 is provided.
Can be handled.

When the operating handle 2 is moved up and down, the engaging piece 13b of the click plate 13 elastically engages with the unevenness 11d of the base 11, as shown in FIG. Can be tilted. Therefore, the supply flow rate of the mixed water can be set reliably,
Fluctuations in flow rate after setting can be suppressed. And
When the operation handle 2 is pressed down to close the valve, the click operation can be performed by the engagement between the click plate 13 and the unevenness 11d, and the valve is not rapidly closed. Therefore, the occurrence of water hammer at the time of valve closing can be prevented, and no sound is generated, thereby maintaining the piping system.

The click plate 13 is connected to the lever 10
Is fixed by inserting it into the mounting hole 10b. For this reason, a member for fixing the click plate 13 becomes unnecessary, and the bulk around the lever 10 can be reduced. In addition, even if one click plate 13 is used, the engaging pieces 13b at both ends thereof are made to be uneven 11d of the pedestal 11, so that a reliable click operation can be performed. Also, since the click plate 13 is detachable from the lever 10, it can be easily replaced when the engagement piece 13b is elastically fatigued.

Although the movable valve plate 7 is made of self-lubricating ceramic in the above embodiment, a self-lubricating resin may be used instead. Examples of the self-lubricating resin include JP-A-2-190677 and JP-A-6-213.
341 and JP-A-10-169803 can be used. Thus, even when the movable valve plate 7 is made of a self-lubricating resin, the slidability can be improved. Further, in addition to using only the movable valve plate 7 as a self-lubricating resin, the first fixed valve plate 6 and the second fixed valve plate 8 may be formed as a self-lubricating resin.

[0027]

According to the first aspect of the present invention, at least one of the three valve plates is made of a self-lubricating material, so that no grease is required and the application work is eliminated, so that the assembling workability is improved. In addition, the slidability of the sliding surface between one or two other valve bodies can be enhanced.

According to the second aspect of the present invention, since the fixed uppermost valve plate, the movable intermediate layer valve plate and the fixed lowermost valve plate are laminated, the uppermost and lowermost valve plates are stacked. The grease between the case and the case becomes unnecessary, and the work of applying grease is eliminated, so that productivity is improved.

According to the third aspect of the present invention, at least one of the uppermost valve plate, the intermediate layer valve plate, and the lowermost fixed valve plate is a self-lubricating material, so that grease does not need to be applied.
There is no mixing of grease into the hot and cold water supply without operation deterioration.

According to the fourth aspect of the present invention, since the valve plate of the intermediate layer is made of a self-lubricating material, the slidability between the uppermost valve plate and the lowermost valve plate can be simultaneously increased. In addition to maintaining grease between the valve unit case and the uppermost and lowermost valve plates, light handling is possible without the need for grease. In addition, since only one of the valve plates of the intermediate layer needs to be self-lubricating, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a main part of a single-lever hot-water mixing faucet of the present invention, showing a state when a flow path is fully closed.

FIG. 2 is a schematic view showing a main part of the single-lever hot-water mixing faucet of the present invention, showing a state in which a flow path is fully opened.

FIG. 3 is an external perspective view of a valve unit.

FIG. 4 is an exploded perspective view of the valve unit.

5A and 5B are details of a pedestal, wherein FIG.
(B) is a detailed view of a portion surrounded by a circle A in (a).

FIG. 6 is a front view showing a main part of the lever.

FIG. 7 is a front view of a click plate.

FIG. 8 is an explanatory view showing engagement between a click plate and unevenness of a base.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 1a Spout 2 Operation handle 3 Valve unit 4 Case 5 Valve seat 5a Hot water inflow hole 5b Water inflow hole 5c Mixed water outflow hole 6 First fixed valve plate (top layer valve plate) 7 Movable valve plate (middle layer valve) 7a Recessed portion 7b Recessed flow channel 8 Second fixed valve plate (lowest layer valve plate) 8a, 8b, 8c Flow channel holes 9a, 9b, 9c, 9d Packing 10 Lever 11 Pedestal 10a Mounting hole 11a Pin 11b Pin hole 11c Rim 11d Roughness 12 Adapter 12a Pin 13 Click plate 13a Notch 13b Engagement piece

Continued on the front page F term (reference) 2D060 BB01 BC01 BC11 BE15 3H053 AA22 AA25 AA26 BA16 BB17 DA03 3H067 AA19 CC23 CC32 CC33 CC39 DD09 DD12 DD24 EA23 EB23 FF02 GG13

Claims (4)

[Claims] The temperature and flow rate of the mixed water are controlled by operating at least one valve plate having a laminated structure of an uppermost valve plate, an intermediate valve plate, and a lowermost valve plate by operating an operation handle. A single lever hot water mixing faucet, wherein at least one of the three valve plates is made of a self-lubricating material. 2. A laminated structure of an uppermost valve plate, an intermediate layer valve plate, and a lowermost valve plate, wherein the uppermost valve plate and the lowermost valve plate are fixed, and A single-lever hot-water mixing faucet, wherein a valve plate is movable, and a temperature and a flow rate of the mixed water are adjustable by operating a valve plate of the intermediate layer by an operation handle. 3. The single lever hot water according to claim 2, wherein at least one of the uppermost valve plate, the intermediate layer valve plate, and the lowermost valve plate is made of a self-lubricating material. Mixing faucet. 4. The single-lever hot-water mixing faucet according to claim 1, wherein the valve plate of the intermediate layer is made of a self-lubricating material.