JP2001220781A - Resin faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-grade resin faucet having good productivity, being inexpensive, and having a sense of integrity by eliminating a cavity between the functional part of a faucet body and an exterior resin. SOLUTION: The functional part of the faucet body forming a water passage is molded from a pressure-resisting resin having pressure-resistant strength, and the outer surface of the functional part is integrally molded from an exterior resin providing good appearance, whereby the faucet body with a sense of integrity is obtained having no cavity between the functional part and the exterior resin. The exterior resin is molded from a material that can be plated, such as ABS, to obtain the high-grade faucet body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a faucet structure, and more particularly to a resin faucet in which a pressure-resistant resin and an appearance resin are integrally formed.

[0002]

2. Description of the Related Art Conventionally, a faucet fitting in which a faucet main body forming a water passage is made of a resin has a faucet main body functional part 37 inserted into a metal housing 38 as shown in FIG. The temperature adjusting function part 39 and the flow rate adjusting function part 40 were engaged with the faucet main body function part 37 to form the faucet main body.

[0003] Further, as shown in FIG.
If there is a protrusion on 7 and it cannot be inserted into the housing,
A method of covering the faucet main body functional part from front and rear or from above and below with covers 41 and 42 made of metal or resin has been adopted.

[0004]

As shown in the above-mentioned prior art, when a plurality of faucet main body functional parts are inserted into the housing, the number of fixing parts to the housing and the number of seal parts between the faucet main body functional parts increase. Therefore, there were problems such as an increase in the number of assembly steps and an increase in the risk of water leakage.

If the faucet main body has a projection in its shape and cannot be inserted into the housing, a method of covering the faucet main body with a cover of two or more parts is used.
In that case, the seam portion appears on the appearance surface, and a gap may be formed in that portion, which is not preferable in appearance.

In the case where a cover made of resin is used for the purpose of cost reduction in the above cover, since there is a cavity between the faucet main body and the cover, a lightweight sound peculiar to the resin is generated when an object hits the cover. And there was a cheap image in dignity.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a high productivity and low cost, and further eliminate a cavity between a faucet main body functional portion and an external resin. An object of the present invention is to provide a high-quality resin faucet with a sense of unity.

[0008]

Means for Solving the Problems In the resin faucet of the present invention made to solve the above-mentioned problem, a faucet main body forming a water passage is formed of a pressure-resistant resin having pressure-resistant strength.
Its outer surface is integrally molded with a resin having good appearance.

By doing so, there is no cavity between the faucet main body functional portion and the external resin, and a faucet main body with a sense of unity can be obtained. Also, the complicated molding work of parts can be reduced by integral molding. And there is no risk of water leakage from the seal.

Further, in the present invention, since the appearance resin is molded from a material to which plating such as ABS adheres, and the surface thereof is plated, the appearance is as high as a metal faucet fitting such as a casting. A high quality faucet body is obtained.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIG.
Is a sectional view of a resin faucet in which a pressure-resistant resin and an appearance resin are integrally formed according to the first embodiment, FIG. 2 is a perspective view of the pressure-resistant resin, and FIG. 3 is a cross-sectional view illustrating a second embodiment of the integrally formed resin faucet. FIG. 4 is a perspective view of a portion where a masking agent is applied before plating.

First, referring to FIG. 1, this faucet main body is made of two kinds of resin materials, and a faucet main body functioning part 1 forming a water passage has POM, P having sufficient pressure resistance.
PS, PSF, pressure-resistant resin which is an engineering plastic such as modified PPE, the outer surface of which has good appearance, such as ABS, PP, PA, etc.
It is integrally formed of a polyamide-based or polyester-based appearance resin 2.

The faucet main body function part 1 has a mounting part 3, an opening part 4 for disposing a temperature control unit, an opening part 5 for disposing a flow rate control unit, and a water discharge pipe mounting part 6 protrudingly formed. It is formed in a cross shape. A water supply channel 7 and a hot water supply channel 8 are provided from the mounting portion 3 to the opening 4 where the temperature adjustment unit is arranged. An opening 4 for disposing a temperature control unit;
A communication path 9 communicating between the openings 5 in which the flow rate adjustment units are arranged and a communication path 10 communicating from the opening 5 in which the flow rate adjustment units are arranged to the water discharge pipe mounting section 6 are provided.

The outer surface of the faucet main body function portion 1 with the outer surface of the water discharge pipe mounting portion 6, the opening 5 where the flow rate adjusting unit is disposed, and the outer surface of the water discharge pipe mounting portion 6 excluding the screw portions 11 and 12 Is integrally formed with an external resin 2.

As a method of integral molding, there is a two-color molding method, in which a pressure-resistant resin such as PPS is primarily molded by a two-color molding machine having two nozzles, and then an appearance resin such as ABS is secondarily molded. In this way, integral molding can be realized.

In the insert molding method, the faucet main body functional portion 1 as shown in FIG. 2 is first molded with PPS or the like.
Next, the faucet main body functional part 1 previously molded is inserted into the appearance resin molding die, and then the appearance resin 2 is molded, whereby the integral molding can be realized.

Attaching section 3 of faucet main body functional section 1 shown in FIG.
A large number of concave grooves 13 are provided on the outer surface of the water discharge pipe mounting portion 6. This is stolen in order to prevent sinks and voids in the thick part when forming the faucet main body functional part 1.
The contact area between the two types of resin materials is greatly increased, which leads to improvement in adhesion.

FIG. 3 shows a second embodiment of the present invention. The faucet main body function part 21 has a mounting part 23 and a water discharge pipe mounting part 24 protrudingly formed, and an opening 25 for disposing a temperature control unit, and a flow rate. An opening 26 for arranging the adjusting unit is formed in a concave shape and is formed in an I-shape as a whole. A water supply channel 27 and a hot water supply channel 28 are provided from the mounting portion 23 to the opening 25 where the temperature adjustment unit is disposed.
Is provided. A communication passage 29 communicating between the opening 25 in which the temperature adjustment unit is arranged, an opening 26 in which the flow adjustment unit is arranged, and a communication passage communicating from the opening 26 in which the flow adjustment unit is arranged to the water discharge pipe mounting part 24. 30 are provided.

An external resin that protrudes and forms the outer surface of the mounting portion 23 of the faucet main body function portion 21, the water discharge pipe mounting portion 24, the opening 31 for disposing the flow rate adjusting unit, and the opening 32 for disposing the flow rate adjusting unit. 22 are integrally formed.

The opening 31 for installing the temperature adjusting unit and the opening 32 for installing the flow rate adjusting unit are made of the external resin 2.
2, the opening portions 31 for installing the temperature adjustment unit and the screw portions 33 and 34 of the opening portion 32 for installing the flow rate adjustment unit need to have pressure-resistant strength. It is necessary to use a resin which is a glass fiber reinforced material and has good appearance.

FIG. 4 shows PPS of pressure-resistant resin and AB of appearance resin.
This is an example in which S is integrally formed and plated thereon, but a method such as applying a masking agent 35 in order to prevent a plating solution from entering a boundary portion between PPS and ABS before plating. Need to be masked. P
Since PS and ABS are not completely fused after integral molding, there is a slight gap. If plating is performed without masking, the pretreatment liquid in the pretreatment step will seep out in the plating step, which will have an adverse effect and cause plating failure.

In addition, in the combination of the pressure-resistant resin and the appearance resin, if two kinds of materials are not completely fused and a gap exists, it is necessary to perform masking.

[0023]

According to the present invention, since the faucet main body forming the water passage is formed of a pressure-resistant resin having pressure-resistant strength, and the outer surface thereof is integrally molded with the appearance resin having good appearance, the faucet main body function is provided. There is no cavity between the resin and the external resin, and a faucet body with a sense of unity can be obtained.

Further, since the external resin is molded from a material to which plating such as ABS adheres and plated, a high quality faucet equivalent in appearance to a metal faucet fitting such as a casting is provided. You can do it.

[Brief description of the drawings]

FIG. 1 is a sectional view of a resin faucet according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a faucet main body function unit according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a second embodiment according to the present invention.

FIG. 4 is a partially cutaway perspective view showing a place where a masking agent is applied.

FIG. 5 is an exploded perspective view of a conventional water faucet in which a pressure-resistant part is formed of resin.

FIG. 6 is an exploded perspective view of a conventional cover resin faucet.

[Explanation of symbols]

 1, 21: faucet main body functional part 2, 22: exterior resin 4, 25, 31: opening for installing temperature adjustment unit 5, 26, 32: opening for installing flow rate adjustment unit 7, 27: water supply channel ( 8, 28: hot water supply path (water supply path) 9, 10, 29, 30: communication path (water supply path) 13: concave groove 35: masking agent application section

Claims (5)

[Claims] 1. A faucet main body forming a water passage is formed of a pressure-resistant resin having a pressure-resistant strength, and an outer surface of the faucet main body is integrally formed of a resin having good appearance. Water faucet. 2. The pressure-resistant resin is POM (polyacetal), PPS (polyphenylene sulfide), PSF
(Polysulfone), engineering plastics such as modified PPE (modified polyphenylene ether), and the appearance resin is a styrene-based, olefin-based, polyamide-based, or polyester-based resin such as ABS, PP (polypropylene), and PA (polyamide). The resin faucet according to claim 1. 3. An outer appearance resin is plated with a material such as ABS to which plating can be attached.
3. The resin faucet according to any one of claims 1 to 2. 4. The resin faucet according to claim 3, wherein the boundary between the pressure-resistant resin and the appearance resin is masked and plated before the plating step. 5. A faucet main body forming a water passage is molded with a pressure-resistant resin having pressure-resistant strength, and an outer surface thereof is integrally molded with a resin having good appearance by a two-color molding method or an insert molding method. The resin faucet according to claim 1, wherein: