KR200491017Y1 - eccentric union for water tap - Google Patents

Abstract

The present invention relates to an eccentric union for connecting a hot and cold water mixing faucet to a water pipe, and the inside and outside of the eccentric union is made of different synthetic resin material, and the part connected to the water pipe and the faucet is made of metal. In order to prevent water pollution and to reduce manufacturing cost while maintaining the required strength, it is made of a composite material of ABS and reinforced glass fiber, and an inlet 12 connected to the water pipe is formed at one side and the other side. An outlet 14 connected to the faucet, and a crank-shaped inner body 10 and 10 'in which a water passage 16 is communicated between the inlet 12 and the outlet 14; An inlet screw tube 20 made of a brass material and installed outside the inlet 12 and screwed to the water pipe side; Crank-shaped outer body made of ABS material and formed to surround the entire outer part of the inner body (10, 10 ') and a part of the inlet screw tube 20 in the state in which the inlet screw tube 20 is inserted ( 30); It is made of a brass material and is installed on the outlet 14, the outlet screw pipe 40 is screwed to the faucet side; made of.

Description

Eccentric union for water tap

The present invention relates to an eccentric union for connecting the hot and cold water mixing faucet of the bathtub or sink of the toilet to the water pipe, the inside and the outside is made of a different synthetic resin material, and the part connected to the water pipe and the faucet is It is made of metal to prevent the water pollution by maintaining the required strength while not having direct contact with the tap water, and it is possible to reduce the manufacturing cost superior to the eccentric union of brass material in mass production.

In general, the hot and cold water mixing faucets installed in the washbasin, bathtub, or kitchen of the bathroom are mostly made of metal such as copper or copper alloy (brass), but the faucet body is made of plastic or stainless steel by revising the national standard (KSB 2331). By being able to manufacture alternative materials such as carbon fiber or glass, it is possible to reduce the manufacturing cost and solve the environmental hormone problem that is harmful to the human body due to the elution of lead components from the faucet made of metal.

In the case of the faucet made of the above-mentioned synthetic resin, defects or breakage problems of cold resistance (durability against freezing), plating, heat resistance and thermal shock should not occur. Therefore, it is difficult to satisfy this problem with a single material alone. To solve this problem.

On the other hand, the hot and cold water mixing faucet uses a crank-type eccentric union to connect the faucet precisely to the desired position even if the gap and height of the cold and hot water pipes embedded in the wall are not constant, although the faucet is made of synthetic resin material. Even though the eccentric union is still cast using a metallic material made of copper alloy (brass), the use of water may cause the dissolution of environmental hormones in the eccentric union. It is necessary to manufacture a synthetic resin material such as, and by doing this will also reduce the manufacturing cost occupied by the eccentric union that was made of metal at the price of the entire faucet.

As a result of searching by the present applicant, the example which produced the eccentric union mentioned above including the patent documents 1-4 etc. from the synthetic resin material was not found yet.

In addition, the above-mentioned eccentric union should be screwed to the water pipes embedded in the wall, that is, cold water pipes and hot water pipes, when the combination is tightened to maintain the water tightness using a pipe wrench, etc., of course, it is subjected to considerable torsional stress. Since the nut must be loosened and tightened even when the faucet is replaced, it must be manufactured to have excellent structural strength and wear resistance.

Korea Utility Model Publication No. 1995-959531 (1995.07.24.) Korean Utility Model Publication No. 1996-0004615 (1996.06.03.) Korean Utility Model Registration No. 20-0379967 (2005.03.17.) Korea Utility Model Registration No. 20-0429502 (October 17, 2006)

The present invention was devised to solve the above problems, and the object of the present invention is sufficient for the torsional stress or abrasion received during the connection work between the water pipe and the faucet without the occurrence of water pollution due to the elution of environmental hormones. To provide an eccentric union for faucets with a new material structure with strength and durability, which can be mass-produced at low cost.

The present invention to achieve the above object,

Made of a composite material of ABS and reinforced glass fiber, the inlet is formed on one side connected to the water pipe and the outlet is connected to the faucet on the other side, the crank-shaped inner body in communication with the water passage between the inlet and the outlet Wow;

An inlet screw tube made of brass and installed on the outside of the inlet to be screwed to the water pipe;

A crank-shaped outer body made of ABS material and shaped to surround the entire outer portion of the inner body and a portion of the inlet screw tube when the inlet screw tube is inserted;

Provides an eccentric union for the faucet comprising a; made of a brass material and installed on the outlet outside the outlet screw pipe screwed to the faucet side.

In a preferred embodiment, the outlet side is provided with a valve hole for closing the water passage, the valve hole is provided with an eccentric union for the faucet is provided with a stop valve.

In a preferred embodiment, the packing pipe for screwing the tap water to prevent contact with the inlet screw pipe inside the inlet screw pipe.

In a preferred embodiment, the inlet screw pipe is formed with a flange portion on one side to enable a rigid coupling with respect to the axial direction and the rotation direction when the outer body is coupled, the through hole is formed around the flange portion is the injection of the outer body During molding, the resin wraps around the flange and flows into the through hole.

In a preferred embodiment, the outlet screw tube is formed with a rim on the inside to enable a rigid coupling with respect to the axial direction and the rotational direction when the outer body is coupled, the rim portion is formed radially projections during the injection molding of the outer body The resin surrounds the inside and outside of the rim and is combined with the protrusions.

The eccentric union for the faucet according to the embodiment of the present invention is made of a synthetic resin material, but the inlet screw pipe and the outlet screw pipe are made of brass, and flanges, rims, and through holes are formed to improve the bonding force with the molten resin forming the outer body. Since it has sufficient strength required after installation and installation of eccentric union, inlet screw pipe and outlet screw pipe made of brass material do not have direct contact with tap water. However, there is no fear of water pollution since the elution of environmental hormones does not occur, and thus the material cost can be reduced as compared with the case of manufacturing a brass material as a whole, thereby reducing the manufacturing cost during mass production.

1 is an external perspective view of an eccentric union for a faucet according to the present invention,
2 is a cross-sectional view taken along line AA ′ of FIG. 1;
3 is an exploded perspective view of the eccentric union according to the present invention,
4 is a perspective view of an inner body,
5 is an exploded perspective view showing the inner body and the inlet and outlet screw tubes,
FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 2, illustrating a coupling state of the inlet screw tube.

Hereinafter, with reference to the accompanying drawings, preferred embodiments that do not limit the present invention will be described in detail.

1 to 6 there is shown an eccentric union for the faucet according to an embodiment of the present invention, which is made of a composite material of ABS and reinforced glass fiber, the inlet port (not shown) connected to the water pipe (not shown) on one side ( 12 is formed and an outlet 14 connected to the faucet (not shown) on the other side is formed, the inner body of the crank-shaped body in which the passage 16 is communicated between the inlet 12 and the outlet 14 ( 10,10 ');

An inlet screw tube 20 made of a brass material and installed outside the inlet 12 and screwed to the water pipe side;

Crank-shaped outer body made of ABS material and formed to surround the entire outer part of the inner body (10, 10 ') and a part of the inlet screw tube 20 in the state in which the inlet screw tube 20 is inserted ( 30);

It is made of a brass material and is installed on the outlet 14, the outlet screw pipe 40 is screwed to the faucet side; consists of.

In this embodiment, a valve hole 18 for closing the water passage 16 is formed at the outlet 14 side, and the stop valve 60 is formed at the valve hole 18. Is installed to replace the faucet after locking the stop valve 60 without locking the main valve provided on the side of the water meter outside the building when replacing the faucet.

ABS molten resin for forming the outer body 30 is formed to a predetermined thickness inside the valve hole 18, and the female screw portion 32 is formed therein to which the stop valve 60 is screwed. The portion of the valve seat 34 that comes into contact with the valve body 64 of the stop valve 60 is also formed of ABS molten resin that forms the outer body to a predetermined thickness.

In the figure, numeral 62 is a watertight o-ring for holding the watertight on the stop valve 60 side.

In addition, in the present embodiment, the inside of the inlet screw pipe 20, the packing pipe 50 for preventing contact with the inlet screw pipe 20, the tap water is made of brass is screwed.

Reference numeral 52 in the figure is a water-tight o-ring for maintaining the watertight when the packing pipe 50 is engaged.

In the present embodiment, the inlet screw tube 20 is formed with two rows of flanges 22 on one side of the outer side so as to maintain a firmly coupled state with respect to the axial direction and the rotation direction when the outer body 30 is coupled In addition, a plurality of through holes 24 are radially formed around the flange portion 22 so that the outer body 30 is made of ABS molten resin during injection molding of the outer body 30 as shown in FIG. 6. The outer layer 30a surrounds the flange portion 22 and the through hole 24 also flows into the inside of the barrel to surround the inlet 12 outside the inner body 10 and 10 'with the inner layer 30b, The inner and outer layers 30b and 30a are connected to each other by a connection layer 30c filled in the through hole 24.

For reference, the two concentric circles shown by thin solid lines in FIG. 6 indicate the outer layer 30a, the inner layer 30b, and the connection layer 30c so as to be distinguished from each other.

In addition, a rim portion 23 is formed on one side of the inner surface of the inlet screw tube 20 so as to be firmly coupled to the molten ABS resin introduced inward.

In the figure, reference numeral 26 denotes a male screw portion connected to the water pipe side, and reference numeral 28 denotes a female screw portion to which the aforementioned packing pipe 50 is screwed.

In addition, in the present embodiment, the outlet screw pipe 40 is formed in three rows as shown in Figure 2 and 3 to enable a rigid coupling with respect to the axial direction and the rotation direction when the outer body 30 is coupled to Rim portion 42 is formed, the inner surface of the rim portion 42 is formed with a radial sawtooth projection 44 is formed during the injection molding of the outer body 30, the resin surrounds the inner and outer sides of the rim portion 42 and the projections ( 44).

In the figure, reference numeral 46 is a male screw part, and reference numeral 70 is a cover which is fitted to the outside of the inlet screw pipe 20 to cover the water pipe part of the wall surface.

In the present embodiment, the inner body (10, 10 ') is formed in half and split form to the left and right, each manufactured by the first injection is integrated into the inside of the outer body 30 in the second injection process described later In this case, the inlet 12 and the outlet 14 and the water passage 16 are formed, and in the present invention, the inner body 10, 10 'is divided in half in half from side to side as in the embodiment shown in the accompanying drawings. It is not limited to the first injection in the form of a single shape, but the body (10, 10 ') divided left and right can also be molded integrally from the beginning, of course, when the inner body (10, 10') is molded integrally, Although it may be difficult to manufacture the channel 16 formed in the shape of the inner body (10, 10 ') by forming the external shape and the channel 16 to be at a right angle can be produced an integral inner body having a variety of shapes. .

In this embodiment, the inner body 10, 10 'divided into half-symmetrical shapes is shown to be molded by the first injection to illustrate that the eccentric union of a more complicated and diverse design can be manufactured. .

In the present embodiment, the inner body (10, 10 ') is formed in plurality in a corresponding position on the surface where the projection 11 and the groove (not shown) abuts when integrally coupled.

The composite material of ABS and reinforced glass fiber, which is the material forming the inner body (10.10 '), is a material that can satisfy cold resistance, heat resistance, and impact resistance, which is the same as that developed as a reinforced synthetic resin material for manufacturing a faucet body. It is preferable to use one.

In addition, the ABS material, which is the material for forming the outer body 30, is an impact-resistant thermoplastic resin, and has excellent surface plating properties, excellent gloss and formability of styrene even without surface plating, and acrylonitrile. It has rigidity, chemical resistance and excellent mechanical properties. It is a kind of engineering plastic with excellent impact resistance of butadiene. It is suitable for adjusting faucet by adjusting the composition ratio of ABS resin, controlling the molecular weight of resin and changing additives. It is a material that can meet suitable properties.

Hereinafter, a process of manufacturing the eccentric union according to the above-described embodiment will be described.

First, the inner body (10, 10 ') is first injection molded using ABS and reinforced glass fiber composite material,

Next, after manufacturing the inlet screw pipe 20 and the outlet screw pipe 40 of the brass material, the inner body (10, 10 ') and the inlet b in the cavity (not shown) of the secondary molding die The inlet and outlet screw pipes 20 and 40 are inserted into the inner body 10 while the ABS 20 is inserted into the cavity in the state of inserting the pipe 20 so as to enclose the entire exterior of the inner body 10 and 10 ′. 10 ') and molded to be integral with the outer body 30 and demolded.

In the above-described secondary injection process, the inner bodies 10 and 10 'positioned inside the cavity of the mold are fixed in place by using a spacer (middle), and the inlet screw tube 20 and the outlet screw tube 40 are The ABS molten resin forming the outer body 30 after being inserted in close contact with the inner wall of the mold cavity is formed on the outer part of the inner body 10 and 10 'and the outer part and the inner part of the inlet and outlet screw pipes 20 and 40. It is injected into the gap with the body (10, 10 ') and the inner body (10, 10') and the inlet and outlet screw pipes (20, 40) and the outer body (30) are integral.

Finally, a separately produced stop valve 60 is fastened to the valve hole 18 on the outlet 14 side of the eccentric union 1 of which the demolding is completed from the mold after the second injection, and separately manufactured on the inlet 12 side. When the packing pipe 50 is fastened, the production and assembly of the eccentric union is completed, and the cover 70 may be screwed to the water pipe side after inserting the outside of the inlet screw pipe 20 at the installation site in advance.

The eccentric union of the present embodiment configured as described above has an inner body reinforced with reinforced glass fiber and an outer body surrounding the inner body made of different kinds of synthetic resin materials, and connected to the inlet screw pipe and the faucet side connected to the water pipe side. The outlet screw pipe is made of brass material, and the flange, rim and through hole are formed therein, so that the bonding force with the molten resin which forms the outer body during the second injection molding is improved. It has sufficient strength, and the inlet screw and outlet screw tubes made of brass do not cause direct contact with tap water, so there is no fear of water pollution because no leaching of various heavy metals or environmental hormones, including lead, occurs.

In addition, the eccentric union according to the embodiment can reduce the material cost compared to the eccentric union made of a conventional brass material can reduce the manufacturing cost during mass production.

1: eccentric union
10,10 ': inner body
11: turning
12: inlet
14: outlet
16: water channel
18: valve hole
20: inlet screw tube
22: flange portion
23: Limbu
24: through hole
26: male thread
28: female thread
30: outer body
30a: outer layer
30b: inner layer
30c: connection layer
32: female thread
34: valve seat
40: outlet screw pipe
42: Limbu
44: turning
46: male thread
50: packing tube
52: watertight o-ring
60: stop valve
62: watertight o-ring
64: valve body
70: cover

Claims (5)

Made of a composite material of ABS and reinforced glass fiber, the inlet 12 is formed on one side is connected to the water pipe and the outlet 14 is formed on the other side is connected to the faucet, the inlet 12 and the outlet 14 An inner body (10, 10 ') of the crank form in which the water passage (16) is communicated between; An inlet screw tube 20 made of a brass material and installed outside the inlet 12 and screwed to the water pipe side; Crank-shaped outer body made of ABS material and formed to surround the entire outer part of the inner body (10, 10 ') and a part of the inlet screw tube 20 in the state in which the inlet screw tube 20 is inserted ( 30); Made of brass material and installed on the outlet 14, the outlet screw pipe 40 is screwed to the faucet side;
The inlet screw pipe 20 has two rows of flanges 22 formed on one outer side thereof to maintain a firmly coupled state with respect to the axial direction and the rotational direction when the outer body screw 20 is coupled to the outer body 30, and the inner side also has an inner side. Rim 23 is formed for firm coupling with the melted ABS melt flows into the circumference, and a plurality of through holes 24 are radially formed around the flange portion 22 to eject the outer body 30. During molding, the outer layer 30a of the outer body 30 made of ABS molten resin surrounds the flange portion 22 and also introduces the through hole 24 into the inside of the barrel, so that the inlets 12 of the inner bodies 10 and 10 are formed. The outer circumference is surrounded by the inner layer (30b), the inner and outer layers (30b, 30a) between the eccentric union for faucet, characterized in that connected to the connection layer (30c) filled in the through hole 24.
The method according to claim 1,
Eccentric union for faucet, characterized in that the inner side of the inlet screw pipe 20 is screwed to the packing pipe 50 to prevent contact with the inlet screw pipe 20 is made of tap water made of brass.
delete The method according to claim 1,
The outlet screw tube 40 has a rim portion 42 is formed on the inner side so as to be firmly coupled to the axial direction and the rotational direction when the outer threaded tube 40 is coupled to the outer body 30, and the rim portion 42 has a radial serrated protrusion. Eccentric union for faucet, characterized in that the 44 is formed so that the resin during the injection molding of the outer body 30, the inner and outer sides of the rim portion 42, and is coupled to the projection (44).
The method according to claim 1,
The inner body (10, 10 ') is formed in a half divided into left and right forms, and the corresponding position of the surface that is in contact with the projection 11 and the groove into which the projection 11 is inserted when integrally combined Eccentric union for faucet, characterized in that formed in plural.

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