JPS5918208Y2 - Hot water mixing faucet - Google Patents

Description

[Detailed description of the invention] This invention is mainly used in bathrooms, etc., and has a hot water mixing faucet that can freely switch between the faucet and the shower side to mix and adjust moderate hot water by adjusting the opening amount of each valve for hot water and cold water. This is related to the improvement of

Conventionally, in this type of mixer faucet, a mechanism that allows the hot water obtained by mixing hot water and cold water to be freely switched between the faucet side and the shower side is already known, for example, from Japanese Utility Model Publication No. 16668/1983. However, as shown in Fig. 4, all of the previous models had complicated switching mechanisms, and in particular, the switching valve a had a structure that utilized a spring b.
In addition to the drawback that the operation of the valve becomes unstable due to internal pressure, etc., the switching lever C is a hot water and cold water opening/closing valve (twist valve) d.

In the middle of e, it was placed in the same direction as them, so
Users often operate the switching lever C incorrectly.

In view of these circumstances, the present invention significantly simplifies the switching mechanism for the water supply direction, and at the same time, by locating the switching lever in a direction different from that of the hot water and cold water valves (towards the front of the outer casing). , which solves all the conventional problems mentioned above at once.

Below, the configuration of the present invention will be described in detail according to the drawings. 1 is the outer casing of the hot and cold water mixing faucet, 2 and 2' are bundles that can freely open and close the water passages on the crank pipes 3 and 3' sides for hot water and cold water. The inside of the outer casing between the bundles 2 and 2' is divided into a mixing chamber 4 and a crank chamber 5 by a partition wall 4'.
The mixing chamber 4 is further divided into front and rear chambers 6, 6' by the arm 5b of the crankshaft 5a, which will be described below. By making the front and rear chambers 6, 6' communicate with each other alternately at any time, hot water from the mixing chamber 4 can be freely taken into the faucet 8 or the shower side 9.

The crankshaft 5a is composed of arm parts 5b, 5b' and cam parts 5C, 5C', and is required to be able to alternately push up the switching valves 7, 7' described below by rotation of the shaft 5a. For example, as shown in FIG. 3, its cross section is a quarter of the full circle of the arm, and both cams form a semicircle at the front and rear.

When the crankshaft 5a is inserted into the crank chamber, the lever 10 at the base end protrudes to the front of the outer casing, the cam portion 5C enters the front chamber 6, and the distal cam portion 5c'
is located in the rear chamber 6', and the crankshaft 5a is rotatable from 0° to 180° via the lever 10 by means of a locking protrusion 5d curved at its base. be.

Further, the switching valves 7, 7' installed in the partition wall 4' include, for example, outer cylinders A and A' screwed onto the outer casing 1, and an inner cylinder roller 5 that is slidably fitted therein. ``Springs `` and `` are loaded in between, and the valve bodies 2 and 2 '' on the lower surface of the inner cylinder are pressed against the valve seats T and d of the water passage RO and HE provided through the partition wall 4', respectively. On the other hand, go to the above water outlet.

The starting points E and E on the lower surface of the inner cylinder RO and RO, which penetrate into the inner cylinder RO and RO, are configured so that they abut against the cam portions 5C and 5C' of the crankshaft 5a, respectively, and are pushed up alternately.

In addition, numeral 11 in the figure indicates an O-ring at each part.

Next, to describe the function of the proposed hot and cold water mixing faucet according to the above configuration, by controlling the opening amount by operating the handles at both ends, the hot water and cold water supplied to the mixing chamber 4 can be brought to an appropriate temperature. The adjustment is the same as before, but for example, if the lever 10 is turned downward as shown in FIGS. 1 and 2 (in the direction of the arrow on the lever, see FIG. 1), the crankshaft 5a
The cam portion 5C in the front chamber 6 pushes up the starting hole of the switching valve 7 and opens the water inlet, but the cam portion 5C in the rear chamber 6'
' is opened from the starting hole of the switching valve 7', so the inner cylinder opening' is lowered by the elastic force of the spring ha', and the water passage hole' is opened.
is closed, the mixing chamber 4 communicates only with the front chamber 6, and therefore hot water flows out to the faucet 8 side.

On the other hand, when the lever 10 is directed upward, the cam portion 5C of the crankshaft 5a is lowered, contrary to the above-described action, and the switching valve 7 is
At the same time as the start hole is opened, the cam portion 5c' rises and pushes up the start hole of the switching valve 7', so that the water passage hole is opened and the mixing chamber 4 communicates only with the rear chamber 6'.
Hot water is supplied to the shower side 9.

As mentioned above, when water is being taken from either the faucet 8 or the shower side 9 and it becomes necessary to temporarily stop the water, the lever 10 can be rotated to the horizontal position. , both cam portions 5C of the crankshaft 5a
, 5c' are the starting points of the switching valves 7 and 7', respectively.
The mixing chamber 4 and both chambers 6 and 6 are kept separated from each other.
' are closed at the same time to shut off the water.

(See Figure 3) Therefore, even if water is to be taken again, the hot water in the mixed state before the water stop can be immediately taken out from the faucet 8 or the shower side 9 by simply rotating the lever 10 upwards or downwards. It is.

As mentioned above, according to the hot water mixer faucet of the present invention, by adjusting the temperature at the beginning, after that, by simply operating the optional lever, you can not only switch to the faucet and shower side, but also temporarily shut off the water. Moreover, since the lever is moved in a pendulum-like manner, which is clearly different from the position and movement of the hands when twisting a pair of hot and cold water valves, it is difficult for the user to This prevents the valve from being operated by mistake, and mechanically, this proposal has one shaft cut out at two places to form a cam part, and by changing the angle of the two cam parts with respect to the axis center, the water supply direction can be adjusted. Since the switching is simple, there is no clogging due to water scale, etc., or mechanical failure, and the practicality of this type of mixing faucet is significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the water/water faucet of the present invention, Fig. 2 is a longitudinal sectional view of the main part taken along line A-A, and Fig. 3 is a crankshaft of the mixed faucet of the invention. FIG. 4 is a perspective view showing a conventional mixing faucet, and FIG. 4 is a partially cutaway front view of a conventional hot water mixing faucet.

Claims (1)

[Scope of Claim for Utility Model Registration] A hot and cold water mixing faucet that can freely switch hot water and cold water mixed by a valve for hot water and cold water between the faucet and the shower side,
The inside of the outer casing 1 is divided into a mixing chamber 4 and a crank chamber 5,
In the crank chamber 5, cam portions 5c, 5c' having a quarter-shaped cross section are provided.
By inserting the connected crankshaft 5a into the semicircular positions of the arm portions 5b, 5b', the crank chamber 5 is further divided into front and rear chambers 6, 6'. Between the valve foot 6' and the mixing chamber 4, the valve feet E and E' are connected to the cam portion 5c. A hot water/cold mixing faucet characterized in that two switching valves 7 and 7' are provided which can be pushed up alternately by contacting the respective valves 5c', and a lever 10 at the base end of the crankshaft is provided on the front surface of the outer casing.