JPS6339494Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a metering faucet that allows a desired amount of water to be set in advance by rotating an operation dial and automatically shuts off the water when that amount of water is released.

The metering stop valve used by attaching to an existing faucet is disclosed in Japanese Patent Application Laid-open No. 56-86276 or Japanese Utility Model Publication No. 53-
Already known from publication No. 84135.

The present applicant is currently developing a product in which a hot water/cold water mixing faucet is equipped with such a metering water shutoff function.

The hot water mixing faucet is used to supply water to bathtubs, washing machines, etc., and automatically shuts off when a certain amount of hot water is discharged, which is set in advance with the operation dial. If you rotate the operation dial according to the water, you can prevent unnecessary water spouting, which is useful for saving water.

However, conventional metering stop valves only have a water volume setting scale displayed on the operation dial to indicate the amount of water to be spouted, so it is difficult for first-time users to judge how far the operation dial should be rotated. It has the disadvantage that it is difficult to provide guidance, especially for children and people with low vision, even if there is an appropriate display on the operation dial.

Additionally, since hot water is often wasted in public places such as hotels, the above-mentioned hot water mixer faucet with an automatic shut-off function has a large water-saving effect when used to supply hot water to a hotel bathtub, for example. The economic benefits are considered to be high. However, in hotels, etc., customers who use the bathtub usually do not know the optimal amount of water to supply for the bathtub, so they have no idea how much the control dial should be set to fill the bathtub with just the right amount of hot water. For this reason, users may turn the control dial to the maximum setting and leave it unattended, which may cause hot water to overflow or cause unnecessary use of hot water. There was a possibility that it would not happen.

On the other hand, to solve this problem, it is possible to incorporate the cam and stopper in the metering stop valve from the beginning of manufacture according to the size of the bathtub, etc., but since bathtubs vary in size, Since it is necessary to prepare a large number of types of products, the complexity of product management and product manufacturing cannot be avoided. In that case, of course, the consumer can simply replace the cam etc. with one that matches the size of the bathtub, but in order to do so, the interior of the conventional structure had to be disassembled. In addition, replacing moving parts such as cams requires the use of special machines and tools, which is not easy for amateurs, and there is also the risk of incorrect parts arrangement during disassembly or reassembly. This would lead to further troubles such as easy movement, and therefore, a product whose moving parts would have to be replaced on-site would be completely unsuitable for use as a commercially available product.

Therefore, this invention solves the above-mentioned drawbacks by allowing users to easily and without trouble limit the maximum set water volume of the metering stop valve as appropriate, making water conservation even more effective when used in hotel bathtubs, etc. The purpose is to make it more accurate.

In order to achieve this purpose, the metering stop valve of the present invention has an operation dial fixed to a water volume setting shaft that protrudes from the tap body, and the desired amount of water is released by rotating the operation dial in a predetermined direction from the water stop position. is set, and when the set amount of water passes through the faucet body, the operation dial is returned to the water stop position and the valve body in the faucet body stops water discharge. A plurality of engagement holes are formed at predetermined intervals on a circumference centered on the water volume setting axis on either the part facing the dial or the part of the operation dial facing the stopper body, and the engagement holes are inserted as appropriate. A stopper pin is removably fitted, and a fixing pin that blocks the stopper pin is fixed on the other side, thereby limiting the rotation range of the operation dial and appropriately limiting the maximum set water volume. It is something to do.

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

A horizontally long hollow tap body 1 shown in the figure has a hot water supply pipe 2 and a water supply pipe 3, which are introduced from the wall of a bathroom, etc., connected to both ends of the back side, and 4 and 5 are connected to both ends of the front side of the tap body 1. This is a known configuration in which hot water supply and water supply can be adjusted by manually rotating the attached hot water supply handle and water supply handle to move the hot water supply valve 6 and the water supply valve 7 in the faucet body 1, respectively. A water volume setting shaft 8 is provided protruding from the upper surface of the central portion of the stopper body 1, and an operation dial 9 is fixed to this. 1
0 is the water discharge pipe attached to the front of the central part, and 11 is the stopper body 1 as a guide for the amount of rotation of the operation dial 9.
It is a red marking point attached to the center of the front. In this embodiment, the operation dial 9 is formed by fitting an outer cylinder 12b made of transparent plastic onto the outside of an inner cylinder 12a made of opaque plastic.
On the outer circumferential surface of the interior body 12a, the word "stop" and "50, 100, 150,
200, 250, 300" and a scale, and a display tape 13 displaying the words "continuous water injection" are wound around the display tape 13. A fixing pin 14 is integrally provided on the lower edge of the inner cylindrical body 12a. 15 is a nut 17 that is screwed into the screw portion 16 at the upper end of the water volume setting shaft 8 in order to attach the operation dial 9 to the water volume setting shaft 8;
is a mating cap to hide the nut. The detailed structure of the metering water stop mechanism is already known from the above-mentioned Japanese Patent Laid-Open Publication No. 56-86276 and others, so its explanation will be omitted, but in short, when the operation dial 9 is turned to "stop" When the water stop position is rotated in the direction of each scale from 50 to 300 (in the direction of the arrow in Figures 1 and 3), the cam provided in the measuring instrument part 18 rotates and the drive rod 19 moves downward. However, since the spherical valve body 20 is separated from the valve port 21 at the lower end of the drive rod 19, the mixed hot water flows from the valve port 21 in the direction of the water discharge pipe 10, and the blades hanging from the meter section 18 The wheel 22 is rotated by the flowing hot water, and its rotation is decelerated by the gear reduction mechanism in the meter section 18 to return the cam and operation dial 9 at a slow speed, so that when the set amount of water has passed, the drive rod is turned off. 19 moves upward and the valve body 20 is attracted to the valve port 21 by water pressure, thereby shutting off water. Further, when the operation dial 9 is rotated in the opposite direction to align the marking point 11 with the "continuous water injection" position, the drive rod 19 is moved downward by the action of the cam, opening the valve port 21, and at the same time, the control rod (not shown) is moved by the operation of the cam to prevent the impeller 22 from rotating, so that a so-called continuous water flow state occurs regardless of the amount of water passing through.

However, in this embodiment, an annular groove 23 is formed on the circumference around the water volume setting shaft 8 on the upper surface of the tap body 1, which the operation dial 9 faces, and the fixing pin 14 of the operation dial 9 is formed in the annular groove. At the same time, a fixing pin 2 is provided on the bottom surface of the annular groove 23.
Plant 4 firmly. 25a, 25b, 25c... are engagement holes protruding from one side of the fixing pin 24 on the bottom surface of the annular groove 23 at predetermined intervals, and 26 is a stopper pin fitted into a suitable engagement hole among them. It is. That is, when the stopper pin 26 is not fitted, the operation dial 9 is set to the scale "300".
The fixed pin 14 collides with the fixed pin 4 when it is rotated to the position, but if the stopper pin 26 is fitted, the fixed pin 14 collides with the stopper pin 26 before it rotates to the scale "300". Further rotation is prevented. For this reason, the stopper pin 2
The maximum set amount of water at which the rotation of the operation dial 9 can be restricted can be limited to a desired value depending on the position where the operation dial 6 is fitted.

Further, 27 is a stopper pin which is removably fitted into the engagement hole 28 so that the operation dial 9 cannot be rotated to the "continuous water injection" position.

In the above embodiment, a plurality of engagement holes are formed on the side of the plug body 1, but these may also be formed on the operation dial side. The operation dial 29 shown in FIGS. 4 and 5 is an example of this, and in this case, a plurality of dovetail-shaped engagement holes 30a, 30b, 30c, etc. are formed at predetermined intervals on the inner circumference of the opening edge. and a sixth portion having a protrusion 31 that matches this dovetail groove.
A stopper pin 32 having the shape shown in the figure is fitted into a suitable one of these engaging holes 30a, 30b, 30c, . . . . In this way, the rotation range of the operation dial can be restricted depending on the position where the stopper pin 32 is fitted, as in the previous embodiment. FIG. 7 shows a stopper pin that is fitted on the operation dial side like the stopper pin 32, but this stopper pin is asymmetrically formed so that one side of the protrusion 31 is longer than the other by a length L. This stopper pin is inserted into the engagement holes 30a, 30b, 3.
If it is fitted to 0c..., the rotation can be restricted faster by the length L, but if it is fitted upside down, it will work regardless of the length L, so even one stopper pin can be fitted in any way. Therefore, since it can be used in two ways, if the number of engagement holes is small, the restriction range can be finely adjusted by preparing a stopper pin with such a shape. Furthermore, this stopper pin can be used to restrict continuous water injection as appropriate depending on the position of the engagement hole and the manner in which it is fitted. In addition, by forming multiple engagement holes in the opposing parts of the plug body and the operation dial to prevent the operation dial from being unnecessarily inserted or removed from the outside, unauthorized settings changes due to mischief are prevented. Ru.

As explained above, the metering stop valve of the present invention is
By simply removing the operation dial from the water volume setting shaft, the stopper pin can be easily refitted to any one of the multiple engagement holes, thereby adjusting the maximum set water volume that suits the purpose of this metering stop valve. can be easily adjusted by the user without disassembling the plug body. Therefore, the maximum set water volume can be easily limited at any time to suit the size of the installed bathtub, etc., which eliminates wasteful water supply such as bath water and washing water, and has a great effect on water conservation.

[Brief explanation of drawings]

Fig. 1 is a partially sectional plan view showing an embodiment of the metering stop valve according to the present invention, and Fig. 2 is a plan view taken along the line X-X in Fig. 1.
The line sectional view and FIG. 3 are exploded perspective views of the metering stop valve. FIG. 4 is a longitudinal sectional view showing another embodiment of the operation dial, FIG. 5 is a bottom view of FIG. 4, and FIGS. 6 and 7 are perspective views showing other embodiments of the stopper pin. . 1... Tap body, 8... Water volume setting axis, 9... Operation dial, 10... Water discharge pipe, 14... Fixing pin,
18...Measuring instrument part, 20...Valve body, 22...Impeller, 24...Fixing pin, 25a, 25b, 25c
...Engagement hole, 26...Stopper pin, 27...Stopper pin, 29...Operation dial, 30a, 3
0b, 30c...Engagement hole, 32...Stopper pin.

Claims (1)

[Scope of utility model registration request] An operation dial is removably fixed to a water volume setting shaft that protrudes from the faucet body, and the desired water volume is set by rotating the operation dial in a predetermined direction from the water stop position, and the set water volume is adjusted inside the faucet body. In a metering stop valve configured such that when the operation dial passes, the operation dial is returned to the water stop position and the valve body inside the stopper body stops water discharge, the part of the stopper body facing the operation dial or the part of the operation dial facing the stopper body A plurality of engagement holes are formed at predetermined intervals on a circumference centered on the water volume setting axis on one of the opposing parts, and stopper pins are removably fitted into the appropriate engagement holes, and the other is provided with a stopper pin. A metering stop valve characterized in that the rotation range of the operation dial is restricted by fixing a fixed pin that stops at the stopper pin, so that the maximum set water volume is appropriately limited.