JPH0115745B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hot water mixing faucet having a structure in which an internal flow path is opened and closed by a sliding valve.

[Conventional technology]

Conventionally, hot and cold water mixing faucets have a fixed valve plate arranged in the flow path of the faucet body, and a movable valve plate slidably superimposed on the fixed valve plate, and the flow path is opened and closed by moving and displacing the movable valve plate. There is one described in Japanese Utility Model Publication No. 56-37179.

A movable valve plate is placed over a fixed valve plate that has an inlet for water and hot water and an outlet for mixed water, and one side of the inlet for water and hot water is placed on the sliding surface of the movable valve plate in the open position. Alternatively, a flow path is formed to communicate both to the mixed water outlet, and the movable valve plate is moved by a single lever handle.

This movable valve plate has a protrusion on its periphery, and by using this protrusion as a fulcrum and applying the acting force of a lever linked to the lever handle for operation to the movable valve plate, the movable valve plate can be rotated in any direction, making it movable. The temperature of the mixed water is adjusted by changing the degree of matching between the flow path of the valve plate and the water/hot water inlet of the fixed valve plate.

The direction of rotation of this lever handle is that the water handle is located on the right side of the main body, which is relatively easy to operate, and the hot water handle is located on the left side of the main body, which is relatively easy to operate on a normal hot water mixer faucet. This ensures that hot water is supplied by turning to the left and water is supplied by turning to the left, thereby preventing erroneous operation during use.

However, when operating the handle, the operating force on the movable valve plate is applied locally in the circumferential direction by the protrusions, so if a ceramic valve plate is used, there is a risk of the movable valve plate breaking. .

To solve this problem, Japanese Utility Model Application Publication No. 16668/1983 describes a structure in which the operating force applied to the movable valve plate is dispersed.

A movable lid that engages with the lower end of a lever connected to a lever handle is placed on a movable valve plate, and a protrusion provided on the lower end of the movable lid is engaged with a plurality of grooves formed on the periphery of this movable valve plate. It is structured as follows.

[Problem that the invention seeks to solve]

This hot water mixing faucet has a configuration in which the flow path opens when the operating lever handle is turned upward, and closes when turned downward, and the water discharge operation direction is different from that of the former.

In general, single-lever type hot water mixer faucets require some experience in handling, but in the commonly used ones, the lever handle stops water when turned upwards and is pushed down, as in the former case. The direction of operation is when the water is spouted.

Therefore, it is preferable to standardize the operating direction of the lever handle in this way, but in the latter case, which is configured to protect the movable valve plate, the operating direction of the lever handle for shutting off water and discharging water should be the same as that of the former. If you make them the same, the turning direction of the water and hot water lever handles will be opposite to the normal one.

Even if it is possible to protect the movable valve plate in this way,
Since the operating directions of the lever handle are different, the actual water discharging operation is often confusing and difficult to use, and there are also safety problems, such as the possibility of burns if the operator makes a mistake in operating the hot water side.

An object of the present invention is to protect the movable valve plate in a hot water mixer faucet in which a fixed valve plate and a movable valve plate are arranged inside one another and a flow path is opened and closed by moving and displacing the movable valve plate. The object is to enable the on-off valve to be used without making mistakes.

[Means for solving problems]

In order to achieve the above object, the hot water mixing faucet of the present invention has a fixed valve plate fixed to the internal flow path of the main body, and a movable valve plate arranged so as to be slidably overlapped with the fixed valve plate. a lever handle provided on the outside of the main body and connected to the movable valve plate to operate it; the fixed valve plate has a valve hole for inflow of water and hot water and a valve hole for outflow of mixed water; Further, a hot water valve hole and a mixed water valve hole are respectively opened in the movable valve plate, and a flow path from the water and hot water inflow valve hole to the outflow valve hole is opened by operating the lever handle. In the hot water mixing faucet, the movable valve plate forms a bottomed cavity with one side open on the side of the connection point with the lever handle, and the bottom surface serves as a sliding surface with the fixed valve plate, and the movable valve plate A valve hole for water and a valve hole for mixed water are opened in the bottom and communicated with the cavity, and the cavity is arranged eccentrically with respect to the valve plate axis and has a circular cross-sectional shape perpendicular to the valve plate axis,
Furthermore, a valve guide having a lever interlocked with the lever handle connected to the substantially central portion thereof is integrated by fitting into the hollow portion, leaving a passage space in the hollow portion.

〔Example〕

The present invention will be described below based on embodiments shown in the drawings.

FIG. 1 is a partially cutaway front view of a hot and cold water mixing faucet according to the present invention, and FIG. 2 is a sectional view taken along the - line in FIG. 1.

In the figure, 1 is the main body of a hot water mixer faucet with a water supply pipe 2 and a hot water supply pipe 3 connected in two positions on the back side, and a water chamber 4 and a hot water chamber 5 are formed on the left and right sides of the inside, and the upper part in the center is The functional part A is divided by a partition wall 6, and the partition wall 6 has water, a water inlet 7 and a hot water inlet 8 which communicate the hot water chambers 4 and 5 with the functional part A, and a mixing port which communicates the inside of the functional part A with the discharge pipe 10. A water outlet 9 is provided for each.

Reference numeral 11 denotes a removable cartridge-type case that is fixedly placed inside the functional part A, and as shown in the exploded perspective view of FIG. 9 are opened.

Inside this case 11, a fixed valve plate 15, a movable valve plate 16, a valve guide 17, and a lever guide 18 are built in order from the lower side. is connected to.

The fixed valve plate 15 is made of ceramic, has a circular opening on the back side, and has valve holes 22 and 23 for inflowing water and hot water, and a valve hole 24 for outflowing mixed water, in which a gasket 21 is arranged. This fixed valve plate 15 is located on the inner bottom surface of the case 11, and connects these water to the water inlet 7, hot water inlet 8, and mixed water outlet 9 formed in the main body 1, the valve holes 22 and 23 for hot water inflow, and the mixed water outlet 9. A flow path is formed continuously in each of the valve holes 24 .

The movable valve plate 16 is made of ceramic like the fixed valve plate 15, and has a cavity 25 which is eccentric to the main body axis and whose upper end is open.
A mixed water valve hole 26 and a sub-arc shaped hot water valve hole 27 are provided on the bottom surface of the body including the main shaft.

A valve guide 17 is fitted into the cavity 25 of the movable valve plate 16 through a packing 28 in a watertight manner.
The valve guide 17 and the cavity 25 form a flow path F that is isolated from the outside.
The valve guide 17 and the movable valve plate 16 have a convex portion 17a and a concave portion 16 for integrally engaging and connecting the two.
a, respectively.

Incidentally, 30 is a sound-deadening net made of stainless steel.

Furthermore, a case lid 31 is connected to the upper end of the case 11, and supports the lever guide 18 in a slidable manner. 16 to the upper surface of the fixed valve plate 15.

The lever guide 18 has an insertion opening 33 for the lever 19 in the axial direction, and the lever 19 is pivotally mounted within the insertion opening 33 by a pin 34.

The lower end of the lever 19 has a rectangular cross section, and is fitted into a recess 35 formed in the upper end surface of the valve guide 17 and having a rectangular opening cross section.

In the above configuration, by vertically and pivotally moving the lever handle 20 with respect to the main body 1,
The movable valve plate 16 slides on the fixed valve plate 15 to discharge mixed water.

Figure 4 shows the fixed and movable valve plate 1 in Figure 1.
5 is a plan view showing the relative arrangement of the fixed valve plates 1 and 16.
The water and hot water inflow valve holes 22 and 23 of each of the water chambers 4 and 5 are blocked by the bottom wall 40 of the movable valve plate 16.
Water cannot be supplied from the bath room 5 and the water is stopped. At this time, the lever handle 20 is tilted upward at the maximum angle, and even if the lever handle 20 is turned, the bottom wall 40 of the movable valve plate 16 causes the water/hot water inflow valve hole 22,
23 remains blocked.

Now, when the lever handle 20 is pushed down, the lever 19 moves to its pin 34 in FIG.
The movable valve plate 16 is rotated clockwise, and the movable valve plate 16 is moved linearly rearward via the valve guide 17 as shown in FIG. Due to this movement, the hot and cold water valve holes 27 of the movable valve plate 16 simultaneously reach the opening areas of the water and hot water inflow valve holes 22 and 23 of the fixed valve plate 15, thereby opening a flow path. Therefore, water and hot water from the water chamber 4 and the hot water chamber 5 flow into the flow path F through the water and hot water inflow valve holes 22 and 23, and the mixed water outflow port of the main body 1 from the mixed water outflow valve hole 24. The mixed water is discharged from the discharge pipe 10 through the discharge pipe 9 .

In this case, in the vertical movement of the lever handle 20, the opening positions of the water and hot water inflow valve holes 22 and 23 of the fixed valve plate 15 are line symmetrical with respect to the forward and backward direction of the movable valve plate 16, so the movable valve plate 16 Valve hole 27 for hot water and hot water in the movable valve plate 16 during movement and valve hole 2 for water and hot water inflow
The rate of change in flow path opening degree between No. 2 and No. 23 is the same. Therefore, the inflow amounts of water and hot water are equal to each other, and when the lever handle 20 is operated in the vertical direction within a plane including the longitudinal axis of the main body 1, the temperature of the mixed water is constant and only the flow rate changes.

Next, when the lever handle 20 is turned to the right by the maximum amount, the movable valve plate 16 is rotated counterclockwise by the valve guide 17 as shown in FIG. In this case, since the cavity 25 of the movable valve plate 16 into which the valve guide 17 is fitted is eccentric with respect to the valve plate axis, the amount of rotation of the movable valve plate 16 even if the turning angle of the lever handle 20 cannot be large. can be considered sufficient.

Due to this rotation of the movable valve plate 16 in the right direction, only the water inflow valve hole 22 of the fixed valve plate 15 is connected to the movable valve plate 1.
6, and the hot water inflow valve hole 23 is sealed by the bottom wall 40 of the movable valve plate 16, so that only water is supplied from the discharge pipe 10.

Conversely, when the lever handle 20 is turned to the left by the maximum amount, as shown in FIG. The valve hole 22 is sealed by the bottom wall 40 of the movable valve plate 16, and hot water is supplied from the discharge pipe 10.

In this water or hot water supply, when the lever handle 20 is raised upward, the movable valve plate 16 moves toward the front of the main body 1, and as described above, the movable valve plate 16
The matching opening degree between the hot and cold water valve hole 27 and the water inflow valve hole 22 or the hot water inflow valve hole 23 of No. 6 is reduced, and the flow rate can be reduced.

In addition, by adjusting the amount of rotation to the right and left, the hot water valve hole 27 and the water inflow valve hole 22 of the fixed valve plate 15 are adjusted.
By changing the degree of matching with the hot water inflow valve hole 23, the temperature of the mixed water can be set by changing the amount of water and hot water supplied, and the flow rate can also be adjusted by rotating the lever handle 20 in the vertical direction. Can be changed arbitrarily.

As described above, water is discharged when the lever handle 20 is turned to the right, and hot water is discharged when the lever handle 20 is turned to the left, so that it can be used in the same way as a normal hot water mixer faucet without making any mistakes.

Further, since the movable valve plate 16 is fitted with the valve guide 17, the operating force of the lever handle 20 against the movable valve plate 16 is applied to the movable valve plate 16 from the entire circumferential surface of the valve guide 17. Therefore, no large acting force is applied locally, preventing cracking or deformation, and the valve element can be used without impairing its function.

Further, the movable valve plate 16 has a hollow flow path formed therein by the hollow portion 26 and the valve guide 17, and the movable valve plate 16 is fixed to the fixed valve plate by the water pressure flowing into the hollow flow path. It can be strongly pressed against the sliding surface with 15. In other words, although the movable valve plate 16 has a mixed water valve hole 26 and a hot water valve hole 27, it has a bottom, so the water pressure of the water or hot water that flows into the interior also acts on this bottom part, and the movable valve plate 16 has a bottom. The valve body 16 itself comes to be pressed against the fixed valve plate 15 side. Therefore, the degree of close contact between the sliding surfaces between the movable valve plate 16 and the fixed valve plate 15 is also increased, and these valve plates 1
The sealing pressure between 5 and 16 also increases, preventing accidents such as water leakage.

〔Effect of the invention〕

As described above, in the hot water mixing faucet of the present invention, a hollow portion having a circular cross section is eccentrically provided in the movable valve plate, and a valve guide connected to the lever handle is integrally fitted into the hollow portion. Therefore, when moving the movable valve plate, the entire circumferential surface of the valve guide exerts an acting force, so there is no localized stress that occurs when protrusions or the like are used as in the past.
Even if it is made of ceramics, there will be no problems such as cracking. Furthermore, since the hollow portion is eccentric with respect to the center of the movable valve plate, the connection point between the valve guide and the lever handle can be offset from the center of the movable valve plate. For this reason, especially when turning the lever handle left and right, the point of force on the valve guide is generated at a position away from the core of the movable valve plate, so operations can be performed that make good use of moment.
You can change the mixing ratio and flow rate of hot water and water with a light touch.

Furthermore, the flow path formed by the hollow part of the movable valve plate and the valve guide is hollow, and has a bottomed structure except for the part where the mixed water valve hole and the hot water valve hole are opened. When water or hot water flows through the valve, the water pressure acts to press the movable valve plate against the sliding surface of the fixed valve plate. Therefore, the sealing pressure between the sliding surfaces of the movable valve plate and the fixed valve plate is increased, and water leakage can be prevented even more reliably.

Furthermore, by making the operating direction of the lever handle the same as that generally adopted in the past, erroneous operation can be prevented and usability can be improved.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a hot water mixing faucet according to the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1;
FIG. 3 is an exploded perspective view of the valve element, and FIGS. 4 to 7 are plan views showing the positions of the movable valve plate relative to the fixed valve plate during operation. 1... Body, 15... Fixed valve plate, 16... Movable valve plate, 22... Valve hole for water inflow, 23... Valve hole for hot water inflow, 24... Valve hole for mixed water outflow, 26... Mixed water valve hole, 27... hot water valve hole, F... flow path.

Claims (1)

[Claims] 1. A fixed valve plate fixed to the internal flow path of the main body, a movable valve plate slidably superimposed on the fixed valve plate, and a movable valve plate provided outside the main body and connected to the movable valve plate. The fixed valve plate has a valve hole for the inflow of water and hot water and the valve hole for the outflow of mixed water, and the movable valve plate has a valve hole for hot water and mixed water. In the mixer faucet, the movable valve plate and the lever handle are configured to open a flow path for water and hot water from the inflow valve hole to the outflow valve hole by operating the lever handle. A bottomed cavity is formed with one surface on the connection point side open, and the bottom surface serves as a sliding surface for the fixed valve plate, and the hot water valve hole and the mixed water valve hole are opened in the bottom of the cavity. The hollow portion is arranged eccentrically with respect to the valve plate axis, and has a circular cross-sectional shape perpendicular to the valve plate axis, and further has a lever interlocked with the lever handle connected approximately to the central portion. A hot water mixer faucet, characterized in that the guide is integrated by fitting into the cavity, leaving a flow passage space in the cavity.