JPH0712258A - Hot/cold water mixed supply tap - Google Patents

Abstract

PURPOSE:To simplify the structure of a die for shaping a water tap housing and facilitate the shaping operation. CONSTITUTION:Through holes 25a, 29a are furnished at the axial direction extension ends on the water inlet side of a wa path 25 formed in the axial direction wiin a water tap housing 20 and a discharge water path 29. The sew holes 25a, 29a are blooced by a tight shutting lid 31. A die for shaping can be thereby inserted and removed, and the structure of the die is simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing faucet, and more particularly to a hot and cold water mixing faucet capable of facilitating the manufacture of a faucet housing.

[0002]

2. Description of the Related Art A hot and cold water mixing faucet mixes hot water and water respectively supplied from a hot water supply source and a water supply source at an appropriate ratio, and discharges mixed water at a required temperature. Is formed, and a mixing chamber for mixing the inflowing hot water and water and a mixed water passage for discharging the mixed water are formed.

Further, a mixing unit having an automatic temperature control function for automatically adjusting the mixing ratio of hot water and water according to a set temperature, an opening / closing valve for adjusting the discharge amount of the mixed water, and An opening / closing unit having a switching valve for switching between the wash discharge and the shower discharge is installed in a predetermined water passage position.

These valve units are detachably mounted in the faucet housing of the hot and cold water mixing faucet.

FIG. 5 is a schematic sectional view showing an example of a hot and cold water mixing faucet having the above-mentioned structure. In the figure, reference numeral 10
Is a faucet housing, and a faucet housing 10 is provided with a hot water inlet 11 connected to a hot water supply source (not shown), a water inlet 12 connected to a water supply source (not shown), and mixed water. A discharge port 13 for discharging is provided. The hot water inlet 11 and the water inlet 12 are connected to a mixed water water passage 16 in the water faucet housing 10 via a hot water water passage 14 and a water water passage 15 formed in the water faucet housing 10, respectively.

[0006] The mixed water passage 16 is formed with both ends open, and the mixing valve unit 1 starts from the side close to the hot water inlet 11.
7 is an opening / closing valve unit 18 from the side close to the water inlet 12.
However, they are detachably inserted and arranged in the mixed water passage 16.

The mixed water passage 16 is further provided with a discharge passage 19 formed in the faucet housing 10.
Connected to 3.

[0008]

Faucet housing 10
Is a plurality of water passages 14, 15, 16, 1 in the housing.
9 is manufactured by injection molding a synthetic resin. However, in the example shown in FIG. 5, the axially extending ends 10a and 10b of the water passage 15 and the discharge water passage 19 which are formed in parallel with the axial direction of the faucet housing 10 form the side end surface of the faucet housing 10. Since they are integrally molded, there is a problem that the structure of the mold for injection molding the water passage 15 and the discharge water passage 19 is complicated and the injection molding process is also complicated. Further, since there is a portion where the flow direction of the resin changes rapidly near the end portion, there is a possibility that defective molding may occur.

The present invention has been made in view of the above points, and an object thereof is to provide a hot and cold water mixing faucet in which the faucet housing can be easily formed and is excellent in accuracy.

[0010]

In order to achieve the above-mentioned object, the present invention has at least two primary side water passages and one internal water passage.
Hot and cold mixed water consisting of a faucet housing integrally formed to form two secondary side water passages, and a valve unit arranged in a passage that connects the primary side water passage and the secondary side water passage. A tap, wherein at least one of the plurality of water passages in the faucet housing is formed as an axially extending water passage, the axially extending water passage being an extension of at least one of the water passages. It is characterized in that it is communicated with a through hole provided on the side end surface of the plug housing, and the through hole is sealed by a cover member.

[0011]

Since the present invention has the above structure, when forming a water passage extending in the axial direction in the faucet housing, a through-hole provided on the extension is used to form a molding die material such as a die. Can be inserted and removed. Therefore, the structure of the molding die is simplified and the molding process is also simplified.
Moreover, since the flow direction of the molding material such as synthetic resin is substantially constant, there is little risk of molding failure, and it is possible to obtain a mixed faucet excellent in accuracy.

[0012]

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

FIG. 1 is a schematic sectional view showing an embodiment of a hot and cold water mixing faucet according to the present invention, and FIG. 2 is a partially exploded perspective view thereof. In the figure, reference numeral 20 is a faucet housing,
The faucet housing 20 is manufactured by injection molding of synthetic resin.

A hot water inlet 21, a water inlet 22, and a discharge port 23 are provided on the outer peripheral portion of the faucet housing 20, respectively. Further, a hot water passage 24 communicating with the hot water inlet 21 is formed in the faucet housing 20 in a direction orthogonal to the axis of the faucet housing 20, and further, in a direction parallel to the axis of the faucet housing 20. A water passage 25, a mixed water water passage 26, and a discharge water passage 29 are formed.

In this embodiment, the faucet housing 20
Through holes 25a, 29 at the axially extended end positions of the water passage 25 and the discharge water passage 29 on the side end surface 20a on the side of the water inlet.
a is provided. Further, a mixing valve unit 27 from the side of the hot water inlet 21 and an opening / closing valve unit 28 from the side of the water inlet 22 are detachably inserted into the mixed water passage 26 formed by opening both ends.

At the side end surface 20a of the water inlet side 22 of the faucet housing 20, a sealing lid 3 for sealing the through holes 25a and 29a is formed.
1 is abutted and fixed by a flange 28a of the opening / closing valve unit 28. Further, the opening / closing valve unit 28 has a female screw portion 26 formed at an end portion of the mixed water passage 26.
A male screw portion 28b screwed to a is formed, and the on-off valve unit 28 and the sealing lid 31 are fixed by screwing these screw portions 26a and 28b.

According to this embodiment, the molds for molding the passage partition walls 20b and 20c in the faucet housing 20 are provided with the through holes 25.
It is possible to have a structure that can be extracted from the a and 29a in the axial direction, and the structure of the molding die can be simplified. Also, the flow of molding resin is almost in the axial direction,
There is no risk of defective molding or changes after molding. Therefore, the faucet housing 20 can be accurately manufactured,
It is possible to reliably prevent water leakage and the like.

According to the hot and cold water mixing faucet of the present embodiment, the hot water flowing from the hot water inlet 21 and the water flowing from the water inlet 22 pass through the hot water passage 24 and the water flowing passage 25, respectively, and the mixing valve unit. It flows into 27 and produces mixed water mixed at a predetermined mixing ratio. The mixed water flows into the opening / closing valve unit 28 through the mixed water passage 26, and is discharged from the discharge port 23 through the discharge water passage 29 by the opening operation of the opening / closing valve unit 28.

FIGS. 3 and 4 are views corresponding to FIGS. 1 and 2, showing another embodiment of the present invention.

Also in this embodiment, the side end surface 20 on the water inlet side of the faucet housing 200 is similar to the above-mentioned embodiments.
Through holes 25a and 29a are provided at axially extended end positions of the water passage 25 and the discharge water passage 29 of 0a.

In this embodiment, the through holes 25a,
The sealing member 310 and the sealing lid 311 of 29a are attached to the side end surface 2 of the faucet housing 200 by using a screw member 312.
It is different from the above-mentioned embodiment in that it is attached and fixed to 00a. The side end surface 200a of the water faucet housing 200 is provided with a screw hole 213 into which the screw member 312 is screwed, and the sealing lid 311 and the seal member 310 have through holes 314 through which the screw member 312 is inserted. 315
Is provided. Since other configurations are the same as those of the above-described embodiment, the same constituent members are denoted by the same reference numerals as those of the above-mentioned embodiment, and the description thereof will be omitted.

Also in this embodiment, it is possible to obtain the same operation and effect as the above-mentioned embodiment.

In each of the above-mentioned embodiments, the faucet housing is formed by injection molding of synthetic resin.
It can be formed by casting, die casting or forging.

In the case of casting or die casting, the structure of the mold or die is simplified as described above, the molding process is simplified, and good product precision can be obtained. Also in the case of forging, the structure of the forging die member such as a die can be simplified.

[0025]

As described above, according to the present invention,
The manufacturing process of the faucet housing can be simplified and the manufacturing cost thereof can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a part of the embodiment shown in FIG.

FIG. 3 is a schematic side sectional view showing another embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a part of the embodiment shown in FIG.

FIG. 5 is a schematic side sectional view showing an example of a hot and cold water mixing faucet.

[Explanation of symbols]

 20 Faucet Housing 25 Water Passage 25a Through Hole 29 Discharge Passage 29a Through Hole

Claims (4)

[Claims] 1. At least two primary side water passages and 1 inside
Hot and cold mixed water consisting of a faucet housing integrally formed to form two secondary side water passages, and a valve unit arranged in a passage that connects the primary side water passage and the secondary side water passage. In the stopper, at least one of the plurality of water passages in the water stopper housing is formed as a water passage extending in the axial direction,
The water passage extending in the axial direction is communicated with a through hole provided on a side end surface of a water faucet housing on at least one extension of the water passage, and the through hole is sealed by a cover member. Water faucet. 2. The hot and cold water mixing faucet according to claim 1, wherein the faucet housing is made of synthetic resin. 3. The hot and cold water mixing faucet according to claim 1, wherein the faucet housing is a forged product. 4. The hot and cold water mixing faucet according to claim 1, wherein the faucet housing is a cast product.