JP2874338B2 - Mixing faucet - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a mixing faucet in which the temperature and the flow rate are adjusted by a left-right swing operation and a vertical swing operation of one operation unit.

(Conventional technology) In the conventional mixing faucet, the operation part for temperature adjustment and the operation part for flow rate adjustment were separate, but since the operation part was separated into two places and the operability was poor, for example, As shown in FIG. 6, a type of mixing faucet of Japanese Patent Publication No. 1-44949, in which temperature and flow can be adjusted with one operation unit 100, has entered the market.

(Problems to be Solved by the Invention) However, as shown in FIG. 6, the mixing tap described above adjusts the hot water side valve 200 and the water side valve 300 to adjust the flow rate while maintaining the predetermined water temperature. When the valve 400 is closed and water is stopped,
Since the valve 200 and the valve 300 remain open, and the hot water-side inflow path 500 and the water-side inflow path 600 are in communication, for example, when the hot water side is in a higher pressure state than the water side, Side inflow channel 60
There is a risk that hot water flows into the water 0 and flows back to the water supply via the inflow channel 600, which is not preferable for sanitation.On the contrary, if the water side is higher in pressure than the hot water side, the water is supplied to the water heater through the hot water inflow channel 500. (Not shown), which may have adverse effects, and there is a great need for improvement.

As a solution to this, there is one disclosed in Japanese Patent Application Laid-Open No. 1-269773, in which a regulating valve structure operated by a temperature sensing element is cylindrical, and a step is provided between a water inflow path and a hot water inflow path. Therefore, there is a problem in that the main casing must be enlarged accordingly, and the inflow passage structure is complicated and must be formed by casting.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and an object of the present invention is to provide a mixing faucet in which the temperature and the flow rate are adjusted by operating one operation unit, when stopping water. An object of the present invention is to prevent the hot water-side inflow passage from communicating with the water-side inflow passage, eliminate the step between the water inflow passage and the hot water inflow passage, make the main body casing compact, and simplify the structure.

(Means for Solving the Problems) In order to achieve the above object, a mixing faucet according to the present invention is provided with a sliding case which is disposed in a main body casing and slides by operating an operation unit, A first valve that moves in conjunction with the temperature sensor, a second valve that is provided on the outer peripheral surface of the first valve and that interlocks with the sliding case, and a water inflow passage. An opening provided in the first valve and the second valve in communication with the hot water inflow path, wherein the water inflow path and the hot water inflow path are provided on the same axis so as to face each other, and the first valve is provided. Opening and second
The mixing amount of hot and cold water is adjusted by the opening of the valve, and the sliding case is moved by the operation of the operation unit to communicate or shut off the opening of the second valve with the water inflow path and the hot water inflow path. At least the flow rate is adjusted.

 The opening is formed in a slit shape.

(Operation) In the mixing faucet configured as described above, when the operating part is operated to move the temperature sensing element disposed in the sliding case, the mixing faucet moves in conjunction with the movement of the temperature sensing element. The first valve slides on the inner surface of the second valve, and the relative positions of the hot water side and water side openings of the first valve and the hot water side and water side openings of the second valve change, Hot water,
The mixing amount of water is adjusted.

Then, when the operation unit is operated to slide the sliding case along the inner surface of the main body casing, the hot water inflow path, the water inflow path and the hot water side and water side openings of the second valve are connected or blocked. The adjustment of water discharge, water stoppage and flow rate is performed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a main body casing. The main body casing 1 comprises a base 1a having a water inflow chamber 2, a hot water inflow chamber 3, and a mixing space 4 communicating with the two inflow chambers 2, 3, and an internal space 8a. Rising part 1b which is erected on the upper surface of the base part 1a
And a head 1c attached to the upper surface of the rising portion 1b. A sliding case 7 is disposed in the main body casing 1 so as to be slidable up and down.

Then, at the respective ends (positions facing the mixing space 4) of the water inflow chamber 2 and the hot water inflow chamber 3 of the base 1a, the inflow chambers 2, 3 are provided.
The valve seats 5, 5 'provided with openings 5a ..., 5'a formed in a slit shape communicating with the water are fixed to the water inflow path 2a and the hot water inflow path 3a.
Are provided on the same axis so as to face each other, and a water discharge section 6 is provided so as to protrude at a desired position on the side peripheral surface of the rising section 1b.

The sliding case 7 includes a main body 8 that is in sliding contact with the inner surface of the main body casing 1, and a rotating shaft 9, an element case 14, and a valve 19 provided inside the case main body 8 from above.

The rotating shaft 9 is located on the upper end side of the internal space 8a of the case body 8,
The spline portion 9a is rotatably mounted by a retaining ring 10, and its spline portion 9a is protruded above the case body 8 so that the spline portion 9a
A lever-shaped operation unit 10 is mounted on the lower end, and an element case 14 is arranged on the lower end 9b.

The operation unit 10 is provided with a lever unit 10a and a cap unit 10b integrally, and at the center of the inner surface of the cap unit 10b, insertion holes 11a, 11a are provided.
The protruding pieces 11, 11 provided vertically are vertically inserted, and the insertion holes 11a,
Side projections 12a and 12 of spline member 12 are slidably inserted into 11a.

Then, the spline member 12 is engaged with the spline portion 9a, and the spherical fitting portion 13 provided at the edge of the cap portion 10b is fitted around the upper end of the side wall of the head 1c.
The lever portion 10a is slidably fitted in c 'and the lever portion 10a is swung up and down with the fitting portion 13 as a fulcrum.

The operation unit 10 is not limited to the lever type, but is optional. For example, a columnar operation unit may be used, which may be pulled up directly to stop water, pushed down to stop water, or rotated right and left to adjust the temperature. It may be something.

The element case 14 accommodates an upper portion 15a of a temperature sensing element 15 made of a wax element in an inner space thereof, and a screw screwed with a screw portion 8b provided on an inner surface of the case body 8 on an outer peripheral surface of the element case 14. A portion 16 is formed, and a lower end 9 b of the rotating shaft 9 is formed in an upper end opening 17 of the element case 14.
Are spline-engaged to form a single unit. The rotation operation of the rotation shaft 9 is changed to an up-down operation to move up and down in the case body 8, and the lower end 15 b of the temperature sensing element 15 protruding from the bottom surface 18 of the element case 14.
The valve section 19 is disposed at the bottom.

The valve section 19 is provided with a first valve 21 in a square-shaped valve space 20 provided at a lower portion of the case body 8 which moves up and down while sliding on valve seats 5 and 5 ′ facing the mixing space 4 of the main body casing 1. And the second valve
22 are provided.

The first valve 21 has a box shape with an opening 21a on the upper surface, provided with a protruding rod 21b on the center axis thereof, and having opposing surfaces 21c, 2c.
1d are provided with openings 21c ',..., 21d' formed in the shape of a slit. The projecting rod 21 is provided by an adjusting spring 23 provided in the valve space 20 over the bottom surface 21e and the inner bottom surface 8c of the case body 8.
b is disposed in a state of being pressed against the lower end 15b of the thermosensitive body 15, while the second valves 22, 22 are provided with slit-shaped openings 22a, 22b,. In this state, they are fixed to the openings 8d, 8d provided on the opposing side surfaces of the case body 8, respectively, and are brought into sliding contact with the outer surfaces 21f, 21f of the first valve 21.

In this embodiment, the opposing openings 22a, 22b,... Of the second valves 22, 22, are provided on the same line.
The facing portions 21c 'and 21d' of the valve 21 are shifted up and down (see FIGS. 4 and 5) to adjust the mixing amount of the hot water side and the water side by the shift. 2 valve 22,2
The openings 22a and 22b on the second side may be shifted.

Further, the left and right turning range of the operation unit 10, that is, the vertical sliding range of the first valve 21 is determined by the opening 21c on either the hot or cold side.
21d ... is closed.

Therefore, when the operation unit 10 is turned, for example, rightward,
The rotation shaft 9 connected to the operation unit 10 rotates on the inner surface of the upper part of the case body 8, and the rotation of the rotation shaft 9 spline-engages with the lower end 9 b of the element case 14.
Rises while rotating inside the case body 8.

Then, the first valve 21 pressed against the lower end 15b of the temperature sensing element 15 by the adjustment spring 23 slides upward along the inner surface of the second valve 22, and the hot water side openings 21c '. Opening 21
d 'adjust the inflow passages 2a, 3a with the respective openings 22a, 22b,... of the second valves 22, 22, respectively, so that the mixing amount of hot and cold water is adjusted and the temperature can be adjusted.

If the temperature sensing element 15 rises, the first valve 21 is adjusted by an adjusting spring.
It is pushed up by 23, it is pushed down if it descends,
The adjusting spring 23 has a smaller repulsive force than the spring 25 in the element case 14.

Then, for example, the operation unit 10 is pulled up by the above-described temperature adjustment, and the entire sliding case 7 is slid on the inner surface of the main body casing 1 to be raised, so that the hot water side and the water side are communicated to discharge water from the water discharging unit 6. (See Fig. 5).

After that, the communication state between the first valve 21 and the second valves 22 and 22 is changed to the valve seat 5 of the hot water side inflow passage 3a by pushing down the operation unit 10 while keeping the setting as described above to lower the entire sliding case 7. ′ And the opening 5′a, 5′a, 5a, 5a of the valve seat 5 of the water side inflow approximately 2a are connected to the second valves 22
If you shut off the water at 2 and shut off the water, the communication between the hot water side and the water side is released,
The mixing of both is stopped (FIG. 4).

The above operation example is merely an example, and the present invention is not limited to this example.

(Effect of the Invention) Since the present invention is configured as described above, according to the first aspect of the present invention, even if the water is stopped while the both are in communication with each other by setting the temperature on the hot water side and the water side, the sliding is performed. Since the second valve provided in the moving case shuts off the inflow passages on the hot water side and the water side of the main body casing outside the first valve respectively, the hot water flows into the water side as in the related art, and conversely, the hot water flows into the water or hot water side. It is good for hygiene because there is no problem of inflow and is very useful without deteriorating the performance. It is also easy to use because it can adjust the temperature and flow rate with one operation part, and it has high commercial value. is there.

Moreover, since there is no step between the water inflow chamber and the hot water inflow chamber as in the conventional mixing faucet, the main body casing becomes compact, the structure is simple, and the main body casing can be made of a tube.

According to the second aspect of the present invention, since the opening is formed in a slit shape, the stirring of hot and cold water can be sufficiently performed, and the temperature control performance is improved.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the mixing tap of the present invention, FIG. 1 is a partially cutaway longitudinal front view, FIG. 2 is a longitudinal side view, FIG. 3 is a cross-sectional plan view of essential parts, FIG. 4 and FIG. FIG. 4 is a vertical sectional front view of a main part, FIG. 4 shows a state at the time of water stoppage, FIG. 5 shows a state at the time of water discharge, and FIG. In the drawing, 1: body casing, 2a: water inflow path 3a: hot water inflow path, 7: sliding case 10: operating section, 15: temperature sensing element 21: first valve, 21c ': opening (hot water side) 21d ': Opening (water side), 22: Second valve 22a: Opening (hot water side), 22b: Opening (water side)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16K 31/68

Claims (2)

(57) [Claims] 1. A sliding case disposed in a main body casing and slid by operation of an operation unit, a temperature sensing element disposed in the sliding case, and moved in conjunction with the temperature sensing element. A first valve;
A second valve provided on the outer peripheral surface of the valve and interlocking with the sliding case, and communicating with a water inflow path and a hot water inflow path, the first valve and the second valve;
An opening provided in the valve, wherein the water inflow passage and the hot water inflow passage are provided on the same axis so as to face each other, and the mixing of hot and cold water is performed by the opening of the first valve and the opening of the second valve. The amount is adjusted, and the sliding case is moved by the operation of the operation unit, and the flow opening is adjusted by interlocking or shutting off the opening of the second valve and the water inflow path and the hot water inflow path. Mixing faucet. 2. The mixing faucet according to claim 1, wherein said opening is formed in a slit shape.