WO2015152675A1

WO2015152675A1 - Protection cover and connecting member for hot water tubes for hot water mattress

Info

Publication number: WO2015152675A1
Application number: PCT/KR2015/003354
Authority: WO
Inventors: 박성현; 홍은영
Original assignee: 주식회사 사피엔스
Priority date: 2014-04-04
Filing date: 2015-04-03
Publication date: 2015-10-08
Also published as: KR200477749Y1

Abstract

Disclosed are an 8-shaped protection cover for protecting a pair of hot water tubes that supply and discharge hot water from an engine unit to a mattress, and a connecting member for the hot water tubes. A protection cover for hot water tubes for a hot water mattress comprises a tube-shaped protection member having formed therein a first channel and a second channel which are a pair of parallel channels that accommodate a pair of hot water tubes, respectively, and having formed thereon a first incision gap extended in the length direction such that the first channel and the outer portion of the protection cover are communicating and a second incision gap extended in the length direction such that the first channel and the second channel are communicating.

Description

Protective cover and connecting member of hot water tube for hot water mat

The present invention relates to a protective cover and a connection member of a hot water tube for a hot water mat, and more particularly, to protect a pair of hot water transfer pipes (hereinafter referred to as 'tubes') that supply and discharge hot water from an engine unit to a mattress. It relates to a female protective cover and the connection member of the hot water tube.

The hot water mat is a personal portable heating device that uses circulating hot water as a heat source for heating. 1 is a view showing the structure of a conventional hot water mat, as shown in Figure 1, in the conventional hot water mat, about 1 meter section between the engine unit 10 and the mattress 20 (hereinafter 'connection' Section ') is provided with a pair of hot water tubes 22, a hot water input pipe and a hot water recovery tube. The engine unit 10 includes a hot water storage and heating tank, an AC-DC power converter, a sensor and an input / output control module, a power connection line, a plug, and the like. In a passive hot water loop, a circulation pump is provided. While not added, the circulating pump includes an active hot water loop. The mattress 20 accommodates a hot water circulation pipe and provides a heating bedding function. Typically, the hot water tube 22 of the connection section is kept warm and protected by wrapping with a thick cloth 12 (hereinafter 'protection cover') that is opened and closed by Velcro.

The outer diameter of the hot water tube 22 is only about 7 mm, but each of the pair of hot water tubes 22 is connected to the engine unit 10 by each of the pair of screw fastening mechanisms. Because of the outer diameter size of the fixed cap and the flat shape of the protective cover 12, the conventional protective cover 12 has a wide width of about 5 cm. Such a conventional protective cover 12 has the following disadvantages. (1) It becomes approximately 5cm in width and spoils aesthetics. (2) Since the hot water tube 22 is loosely wrapped, the thermal insulation effect is lowered. (3) In connecting the engine unit 10 and the pair of hot water tubes 22, since the fixing caps are fastened to the respective hot water tubes 22, the fixing caps become smaller and the coupling is cumbersome and unstable. (4) Since the connecting members at both ends of the hot water tube 22 are not standardized, the connection method and size of the hot water tube 22 are different for each manufacturer and each model even within a single maker, so that not only the manufacturing cost increases but also the consumer The engine unit 10 and the mattress 20 cannot be separately purchased and configured or recycled.

An object of the present invention is to provide a protective cover of a hot water tube, that is, a hot water tube for a hot water mat, which improves an external aesthetic appearance of a connection section and provides a strong thermal insulation effect on the connection section.

Another object of the present invention is to provide a connection member of a hot water tube for a hot water mat, which provides an economical yet powerful and stable fastening function for the connection section and the engine unit, or the connection section and the mating portion of the mattress.

Still another object of the present invention is to provide a protective cover and a connection member of a hot water tube for a hot water mat, which provides an industry standard method that can be replaced by parts with respect to a connection section and an engine unit, or a connection section and a mattress. will be.

In order to achieve the above object, the present invention, a pair of parallel first and second passages each receiving a pair of hot water tubes are formed therein, the first passage and the outside of the protective cover communicate with each other The protective cover of the hot water tube for hot water mat, including a tubular protective member formed with a first incision extending in the longitudinal direction and the second incision extending in the longitudinal direction so that the first passage and the second passage communicate with each other; to provide.

In the present invention, one end of the barb portion 82 is formed into which the

hot water tubes

22a and 22b are inserted, and the other end thereof is provided with a taper portion 86 having a smaller diameter as it extends in the longitudinal direction. 82 and the taper portion 86 are connected to the bottleneck portion 84 having an outer diameter smaller than the barb portion 82 and the tapered portion 86, and is connected to the hot

water tubing portions

22a and 22b therein. Pipe lines are formed, respectively, the hot water tube (22a, 22b) is a metal nipple (80) inserted into the bottleneck (84); An inner cap 90 inserted into the bottleneck 84 to fix the

hot water tubes

22a and 22b on the bottleneck 84; A pair of

annular perforations

35a and 35b capable of accommodating the tapered portion 86 of the metal nipple 80 are formed, and inside the

perforations

35a and 35b as a flow passage of hot water. Engine-side coupling portions 30 each having

inner pipes

39a and 39b formed therein and screwed portions 32 formed in a front direction thereof; And a protective member accommodating portion 54 into which one end of the tubular protective member 100 is fitted, and at the other end, a screw coupling screwed with the screw coupling portion 32 of the engine side coupling portion 30. A portion 52 is formed, and between the protective member accommodating portion 54 and the screwing portion 52 defines a distal position of the tubular protective member 100 and the front surface of the inner cap 90. (94) the outer cap 50 is formed by the inner cap support 56 for pressing the edges, bringing the inner cap 90 and the engine side engaging portion 30 into close contact, and preventing the inner cap 90 from being separated. It provides a), the connecting member of the hot water tube for hot water mat.

The protective cover and the connection member of the hot water tube according to the present invention improve the external aesthetics of the hot water tube in the connection section, and provide a strong thermal effect on the connection section, as well as the connection section and the engine section, or the connection section and the mattress. It provides a strong and stable fastening function for the coupling part of. In particular, the perforated connecting member of the present invention is to join the hot water tube end portion coupled to the engine with a permanent metal nipple, and permanently weld the inner cap around the bottleneck section in which the tube is inserted, so that the bare tube is connected to the projecting seam of the engine By eliminating the insertion and removal process inherently, it provides the following effects. First, the perforated connecting member eliminated the possibility of leakage by causing the tube to swell and not harden. Second, on the one hand, the plastic thickness must be increased for the physical rigidity of the plastic fittings, on the other hand, the outer diameter of the fittings should be excessively large, and damage to the tubes should be avoided. Too small can solve the conflicting demands at once that they should not interfere with the flow of water. The perforated connection member according to the present invention not only secures the tube and secures the tube at the same time, but also makes the inner diameter of the pipe line the same or larger than that of the hot water tube. The rapid decrease in the internal diameter of the pipeline is a fatal impediment in plumbing engineering, especially for personal portable equipment with very low tolerance for water circulation, such as hot water mats. Maintaining larger than the installed tube inner diameter plays a decisive role in the smooth water circulation. The punched connection member of the present invention greatly improves the efficiency and effectiveness of water circulation by removing the existing protruding joint pipe.

1 is a view showing the structure of a conventional hot water mat.

Figure 2 is a perspective view showing a protective cover of the hot water tube for hot water mat according to an embodiment of the present invention.

3 is an exploded perspective view showing another embodiment of the present invention, a connection member of a hot water tube for a hot water mat using a protruding joint pipe at an engine side coupling part.

Figure 4 is a cross-sectional view of the engine-side inner coupling in the connection member of the hot water tube shown in FIG.

5 and 6 are cross-sectional views of the inner cap and the outer cap in the connecting member of the hot water tube shown in FIG.

7 is a hot water inserting one end of the metal nipple into the tube end, the inner cap is coupled to the 'barb bottleneck' of the metal nipple, and then the other end of the metal nipple into a pair of perforations formed in the engine-side coupling portion Exploded perspective view showing the connection member of the hot water tube for the mat

8 is a perspective view and x-ray cross-sectional view of the coupling member shown in FIG.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

Figure 2 is a perspective view showing a protective cover of the hot water tube for hot water mat according to an embodiment of the present invention. As shown in FIG. 2A, the protective cover of the present invention has a pair of parallel first and

second passages

102 and 103 which respectively receive a pair of hot water tubes 22 (see FIG. 1). The first opening 102 and the first passage 102 and the second passage 103 extending in the longitudinal direction so that the first passage 102 and the outside of the protective cover communicate with each other are formed at each other. It is an '8-shaped guard' including a tubular protective member 100 formed with a second incision gap 113 extending in the longitudinal direction to communicate. Preferably, the first and

second passages

102 and 103 have a circular cross section, and the first and

second incisions

112 and 113 have a long split incision along the length of the protective cover. Has the form In the '8-shaped guard' of the present invention, two passages (102, 103) and two incisions (112, 113) are formed, whereas a conventional 'pipe type insulation' has only one passage and one incision. Formed.

In order to protect the pair of hot water tubes 22 by using the protective cover according to the present invention, first, one hot water tube 22 is disposed in the first incision 112, the first passage 102, and the first hot water tube 22. 2 incisions 113 are sequentially passed through and positioned in the second passage 103, and another hot water tube 22 is passed through the first incision gap 112 to the first passage 102. Position it. In this way, by placing the pair of hot water tubes 22 in the pair of parallel first and

second passageways

102 and 103, the hot water tube 22 is fixed while protecting and warming the hot water tube 22. You can.

In addition, the protective cover according to the present invention, as shown in B of Figure 2, may further include a tubular fabric cover 120 to cover and press the tubular protective member 100. For example, the tubular protective member 100 is cut to the length (n cm) required for the connecting section, and the same or slightly longer pair of hot water tubes 22 are inserted into the tubular protective member 100. , Made of a highly elastic fabric, such as female stockings or leggings, covering the outside of the tubular protective member 100 with a fabric cover 120 having the same length as the tubular protective member 100, to complete the protective cover Can be. As such, when the fabric cover 120 is used, first, not only does the hot water tube 22 come out of the tubular protective member 100 even though the connection section is roughly treated. Using the fabric cover 120, the appearance can be beautifully decorated.

The tubular protective member 100 has an appropriate flexibility to accommodate the hot water tube 22 and to bend the hot water tube 22 in a desired direction, and also has moldability, insulation, elasticity, durability, economy, It may be made of a conventional synthetic resin having a porosity, elasticity and the like. For example, the tubular protective member 100 is NBR (acrylonitrile -butadiene rubber, acrylic synthetic rubber) synthetic rubber, EPDM (ethylene propylene diene monomer, a kind of synthetic rubber) synthetic rubber, polyethylene, polypropylene, polystyrene foam, etc. Polymeric resins can be prepared by profile extrusion. In the protective cover of the present invention, the thickness of the smallest thickness of the tubular protective member 100 is 3 mm, the diameter of the hot water tube 22 is 7 mm, the first and second passages (102, 103) ) Is 8 mm, the total diameter of the tubular protective member 100 is about 25 mm (= 3 + 8 + 3 + 8 + 3 mm). In FIG. 2, the tubular protective member 100 having a circular cross section is illustrated, but the tubular protective member 100 has an elliptical cross section having a long diameter of 23 to 25 mm and a short diameter of at least 14 mm. It may also be prepared. Considering that the width of the protective cover currently on the market is more than 50 mm, the size is reduced to less than half. In addition, the protective cover according to the design of the protection is to protect and insulate the hot water tube 22 with a synthetic resin of at least 3 mm thick, compared to the current protective cover made of fabric of less than 1 mm thick, the thermal insulation and protection effect is greatly improved do.

3 is an exploded perspective view showing a protruding connection member of a hot water tube for hot water mat as another embodiment of the present invention. The connecting member of the present embodiment is a connector constituting an interface between the connecting section (ie, the hot water tube) and the engine portion. The connection member of the present invention, as shown in Figure 3, without using a conventional one-tube-threaded connection cap method, as shown in Figure 3, the projecting body 30, which is the engine side coupling portion, if necessary, the inner coupling portion or the engine side Also referred to as a coupling portion), the inner cap (40, inner-cap) and the outer cap (50, outer-cap). That is, the protruding connecting member of the present embodiment is provided with a body of the engine side coupling portion 30 as a male connector having a male screw surface at the end of the engine portion or the mattress, and the body of the engine side coupling portion 30. After preparing a pair of joint pipes (34a, 34b) protruding again from, and then insert a pair of hot water tubes (22a, 22b), respectively, the projections 46 of the inner cap projections of the engine side coupling portion 30 After accommodating the holes, the inner cap 40 is fastened by screwing the screw formed on the inner surface of the outer cap 50 with the screw coupling portion 32 formed on the surface of the protruding body 30. Pressure from the mattress direction to the engine part to make the inner cap 40 gradually press the hot water tube end covered by the projecting joint of the engine side coupling part 30, thereby forming a conduit between the hot water tube and the engine part. Make it firm.

4 is a cross-sectional view of the protruding coupling portion 30 installed at the end of the engine unit and / or mattress, FIG. 5 is a cross-sectional view of the inner cap 40 of the protruding coupling member, and FIG. 6 is an outer cap 50. It is a cross section of. 3 to 6, the engine side coupling portion 30, the inner cap 40 and the outer cap 50 of the protruding coupling member will be described in detail. As shown in Figs. 3 and 4, the engine side engaging portion protruding body 30 is a part of the outer surface of the engine portion 10 side, and the surface thereof serves as a male connector. The pair of

joint pipes

34a and 34b to which the pair of

hot water tubes

22a and 22b are fitted to each other is protruded from the protruding body end surface of the coupling portion 30 again. The protruding pair of

pipes

34a and 34b are connected to pipes (not shown) formed inside the engine unit, respectively, to form a hot water circulation loop. Since the pair of

joint pipes

34a and 34b have a taper structure in which the diameter increases as the closer to the engine is closer to the engine, the inner cap 40 is rotated in the engine direction according to the rotation of the outer cap 50. When pressed to the right side of the figure, the pressure on the portion of the pair of

hot water tubes

22a and 22b that covers the pair of

joint pipes

34a and 34b becomes stronger. As the pair of holes of the inner cap 40 is inserted into the protruding joint pipe 30, the coupling becomes stronger by the taper.

3 and 5, the inner cap 40 is formed with a pair of fixing

holes

44a and 44b through which the pair of

hot water tubes

22a and 22b pass. At the rear of the inner cap 40, one or more inner cap coupling protrusions 46 are formed. As shown in Figures 3 and 6, the outer cap 50 may be a concentric circle structure having a single cross-section of both inside and outside. One end of the outer cap 50 is formed with a protective member accommodating portion 54 into which the end of the tubular protective member 100 is fitted. On the other end of the outer cap 50, a screw of the engine side coupling portion 30 is provided. A screw coupling portion 52 is formed to be screwed to the coupling portion 32. Between the protective member accommodating portion 54 and the screw coupling portion 52 of the outer cap 50, the tubular protective member 100 is formed. ) To limit the distal position of the inner cap 40 by pressing the edge of the front face 42 of the inner cap 40 to closely contact the inner cap 40 and the engine side coupling part 30, and to prevent the inner cap 40 from being separated. An inner cap support 56 is formed.

3 to 6, the operation of the protruding connecting member will be described. First, the ends of the pair of

hot water tubes

22a and 22b are externally inserted into the pair of

joint pipes

34a and 34b of the engine side engaging portion 30, respectively. Next, the inner cap 40 is fitted so that the pair of

fitting pipes

34a and 34b of the engine side engaging portion 30 are fitted into the pair of fixing

holes

44a and 44b of the inner cap 40. And the

fitting pipes

34a and 34b and the fixing

holes

44a and 44b are fitted with the

hot water tubes

22a and 22b interposed therebetween to connect the

hot water tubes

22a and 22b to the engine side coupling portion 30. Fix it. At this time, if the inner cap coupling protrusion 46 of the inner cap 40 is fitted into the coupling groove 36 formed in the engine side coupling portion 30, it is preferable because the rotation of the inner cap 40 can be prevented. . In this way, the inner cap 40 is fitted to fix the pair of

hot water tubes

22a and 22b to the

joint pipes

34a and 34b of the engine side coupling portion 30. Finally, the circular outer cap 50 is fixed. While the screw coupling portion 52 of the inner cap 50 is screwed into the screw coupling portion 32 of the engine side coupling portion 30, the inner cap support 56 of the outer cap 50 is the inner cap A pair of fixing holes formed in the inner cap 40 by pressing the front surface 42 of the 40 and fitting the

hot water tubes

22a and 22b fitted to the tapered structure

fitting pipes

34a and 34b of the protruding body 30. Tighten with (44a, 44b) to fix more firmly. That is, the inner cap 40 provides a passage for accommodating a pair of

hot water tubes

22a and 22b in an eight-character shape, and the fixing

holes

44a and 44b of the inner cap 40 are tapered. It is fitted to the

pipes

34a and 34b, and the hot water tube is brought into close contact with the outer cap 50 in the direction in which the diameters of the tapered

joint pipes

34a and 34b increase (that is, in the right direction in FIG. 3). It serves to press and fix (22a, 22b).

Figures 7 and 8, as another embodiment of the present invention, instead of a protruding connecting member for protruding a pair of joint pipes again from the protruding body of the engine-side coupling portion, perforated to drill a pair of holes in the protruding body It shows the connecting member. Core principle of the integrated connection member, "protrusion of the pipe formed between two tubes and the engine at the same time using one large diameter threaded connection member", whether the projection type of Figs. 3 to 6 or the drilling type of Figs. Is the same. As shown in FIGS. 7 and 8, the perforated connection member has a barb portion 82 (hanging portion) into which one of the

hot water tubes

22a and 22b is inserted, and the other end thereof has a smaller diameter as it extends in the longitudinal direction. The tapered portion 86 is formed, and the barb portion 82 and the tapered portion 86 are connected by a bottleneck 84 having an outer diameter smaller than that of the barb portion 82 and the tapered portion 86. The inside includes a metal nipple 80 having a conduit connected to the

hot water tubes

22a and 22b, preferably a conduit that is equal to or larger than the inner diameter of the

hot water tubes

22a and 22b. The

hot water tubes

22a and 22b are fitted to the bottleneck 84. A pair of

tubes

22a and 22b are inserted into the barb portion 82 and the bottleneck 84, and the pair of

tubes

22a and 22b and the bottleneck 84 have an inner cap upper member 92a. And at the same time between the inner cap lower member (92b), by combining the inner cap upper member (92a) and the inner cap lower member (92b), the inner cap 90 is fixed to the bottleneck 84 . Preferably, the inner cap upper member 92a and the inner cap lower member 92b are made of an injectable resin, which is very economical when ultrasonically welded. That is, the inner cap 90 formed by combining the inner cap upper member 92a and the inner cap lower member 92b is fitted to the bottleneck 84, and the hot water tube 22a, on the bottleneck 84, is disposed. 22b). At this time, the tapered portion 86 of the metal nipple 80 protrudes from the inner cap 90 in the opposite direction to the

tubes

22a and 22b. In this case, it is preferable that a gasket (not shown) is mounted on the engine directional surface of the inner cap 90, and the protrusion 96 coupled to the surface of the engine-side protruding body 30 penetrates the gasket so as to refer to FIG. 7. 8 is a horizontal cross-sectional view, not shown in FIG. 8) is formed so that when the outer cap 50 rotates, a pair of

tubes

22a and 22b and the inner cap 90 together with the outer cap 50 It provides a function to prevent the twisting while turning and the inner cap 90, the tube (22a, 22b) is inserted into the engine coupling portion 30 as the outer cap 50 is locked in the direction of locking. do.

In addition, in the perforated connection member, the screw 32 is formed on the surface of the inner coupling portion 30, and can accommodate the tapered portion 86 of the metal nipple 80 protruding from the inner cap 90. A pair of

annular perforations

35a and 35b are formed, and inside the

perforations

35a and 35b,

inner tubes

39a and 39b are formed as flow passages of hot water, respectively, and an inner cap at one end. A protrusion accommodating portion 37 is formed in which the protrusion 96 extending from the 90 can be accommodated. At this time, it is preferable that a gasket (not shown) of silicon or rubber material is attached to the coupling surface of the inner coupling portion 30 and the inner cap 90. At this time, the gasket should have a hole through which the protrusion 96 extending from the inner cap 90 can be received. In addition, the pair of

perforations

35a and 35b are formed in the shape of a strip of grooves having a depth of 5 mm or more about a pipe line, and the pair of

perforations

35a and 35b becomes narrower as they are deeper. It is preferable that it is a luer system.

The outer cap 50 used for the perforated coupling member is substantially the same as the outer cap 50 shown in FIG. 3, and the end of the tubular protective member 100 is fitted to one end of the outer cap 50. A protective member accommodating portion 54 is formed, and at the other end, a screw engaging portion 52 screwed with a screw engaging portion 32 formed on the surface of the engine side engaging portion 30 is formed. Between the receiving portion 54 and the screwing portion 52, the end position of the tubular protective cover 100 is limited, and the edge of the front side 94 of the inner cap 90 is pressed, so that the inner cap ( 90 presses the taper portion 86 of the metal nipple 80 extending toward the engine-side coupling portion 30 into a pair of

perforations

35a, 35b, luer grooves of the engine-side coupling portion 30. And an inner cap support 56 for preventing the inner cap 90 from being separated. The outer cap 50 used in the perforated connecting member is essentially the same as the outer cap 50 used in the protruding connecting member. This is because the basic principle of "joint two conduits simultaneously with one large cap", whether protruding or perforated, is the same.

On the other hand, in the case of the perforated connection member, the inner cap upper member 92a and the inner cap lower member 92b are firmly attached to the bottleneck 84 of the metal nipple 80 inserted at the ends of the

hot water tubes

22a and 22b. In addition to forming the inner cap 90, the tapered portion 86 of the metal nipple 80 is accommodated in the engine-side protrusion, that is, a pair of

perforations

35a and 35b of the inner coupling portion 30. Water-tightness is secured primarily by the luer method, and as the screwing of the outer cap 50 proceeds, the taper portion 86 of the metal nipple 80 is dug deeper into the luer grooves of the

perforations

35a and 35b. Watertightness is secondarily enhanced, and the surface of the inner cap 90 and the silicon or rubber gasket attached to the end surface of the inner coupling portion 30 are more closely attached, thereby increasing the watertightness to the third.

In the existing hot water mat, the mattress ends are connected to the hot water connection conduit by using a permanent fixing method without a connector, while the connection member of the present invention is used to connect the mattress as well as the engine part, The interface between them is standardized, clearly distinguishing into three components, the section and the engine section. As a result, manufacturing costs are reduced, and the consumer can purchase the mattress and the engine separately, or maintain or repair them separately. The connection section connector of the conventional hot water mat is connected to each hot water tube using a separate small connection cap, while the connection member of the present invention connects the two hot water tubes to one connection member, thereby connecting the connection section and the engine. For the mating surface of the mattress or mattress, strong and stable fastening is possible. In addition, according to the present invention, an industrial standard (a de facto 'standard' based on technology within a private industry, not a standard by a national agency) about a connection section and an interface between an engine part or a mattress is provided. By providing, it is easy to repair and replace parts of the engine and the mattress.

Claims

A pair of parallel first and second passages 102 and 103 for receiving a pair of hot water tubes, respectively, are formed therein, and the first passage 102 and the outer side of the protective cover communicate with each other in the longitudinal direction. A tubular protective member 100 having a first cut gap 112 extending in a direction and a second cut gap 113 extending in a longitudinal direction such that the first passage 102 and the second passage 103 communicate with each other; Included, the protective cover of the hot water tube for hot water mat.
The protective cover of claim 1, further comprising a tubular fabric cover (120) for covering and pressing the tubular protective member (100).
And a pair of joint pipes 34a and 34b to which the screw coupling portion 32 and the pair of hot water tubes 22a and 22b formed in the front direction are fitted and coupled, respectively. ) Is connected to a pair of hot water circulation pipes formed inside the engine unit or the mattress, respectively, and becomes a flow passage of hot water, and the pair of joint pipes 34a and 34b taper whose diameter decreases toward the front. Engine side coupling portion 30 having a structure;

An inner cap 40 having a pair of fixing holes 44a and 44b through which the pair of hot water tubes 22a and 22b pass; And

At one end, a protective member accommodating portion 54 into which the end of the tubular protective member 100 is fitted is formed, and at the other end, a screw engaging portion screwed with the screw engaging portion 32 of the engine side engaging portion 30. 52 is formed, and between the protective member accommodating portion 54 and the screwing portion 52 defines a distal position of the tubular protective member 100, and the front surface of the inner cap 40 ( 42) the outer cap 50 is formed with an inner cap support 56 for pressing the edges, bringing the inner cap 40 and the engine side coupling part 30 into close contact, and preventing the inner cap 40 from being separated. Containing, the connection member of the hot water tube for hot water mat.
According to claim 3, At least one inner cap coupling protrusion 46 is formed on the rear surface of the inner cap 40, The engine side coupling portion 30 is fitted to the inner cap coupling protrusion 46 The coupling groove is formed, the connection member of the hot water tube for hot water mat.
At one end, a barb portion 82 into which the hot water tubes 22a and 22b are inserted is formed, and at the other end, a taper portion 86 is formed to decrease in diameter as it extends in the longitudinal direction, and the barb portion 82 and the taper are formed. The part 86 is connected to the bottleneck part 84 having an outer diameter smaller than the barb part 82 and the taper part 86, and an internally connected pipe line is connected to the hot water tub parts 22a and 22b. The hot water tubes 22a and 22b may include metal nipples 80 inserted into the bottleneck 84.

An inner cap 90 inserted into the bottleneck 84 to fix the hot water tubes 22a and 22b on the bottleneck 84;

A pair of annular perforations 35a and 35b capable of accommodating the tapered portion 86 of the metal nipple 80 are formed, and inside the perforations 35a and 35b as a flow passage of hot water. Engine-side coupling portions 30 each having inner pipes 39a and 39b formed therein and screwed portions 32 formed in a front direction thereof; And

At one end, a protective member accommodating portion 54 into which the end of the tubular protective member 100 is fitted is formed, and at the other end, a screw engaging portion screwed with the screw engaging portion 32 of the engine side engaging portion 30. 52 is formed, and between the protective member accommodating portion 54 and the screwing portion 52 defines a distal position of the tubular protective member 100, the front surface of the inner cap 90 ( 94) by pressing the edge, the inner cap 90 and the engine side engaging portion 30 in close contact, the inner cap support 56 is formed to prevent the separation of the inner cap 90 is formed outer cap 50 Containing, the connection member of the hot water tube for hot water mat.