JPH0559134U - End cap of piping duct - Google Patents

Abstract

(57) [Summary] [Purpose] To bend the pipe take-out part for taking out other pipes for air conditioning from the outside so that the pipe can be easily bent without difficulty. [Structure] An end cap of a piping duct mounted on an end portion of the piping duct 5 covering the pipings 3 and 4, and a joint portion 12 connected to the piping duct 5 and the pipings 3 and 4 are taken out. The pipe take-out portion 13 is provided, and the pipe take-out portion 13 is formed in a bellows shape that is bendable and expandable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an end cap attached to a terminal portion of a duct for piping which covers piping for air conditioning and others.

[0002]

[Prior Art]

 The prior art will be described by taking an end cap used for a duct for air conditioning piping as an example. 5 and 6, 1 is an indoor unit of an air conditioner, 2 is an outdoor unit of the same air conditioner, and an air conditioning main pipe as a main pipe for circulating a heat medium between them (usually two heat insulating coating pipes) ) 3, a drain pipe 4 as an auxiliary pipe for discharging drain water generated in the indoor unit 1 to the outside, and a connecting wire (not shown) are housed in the duct 5 and are protected in the wall surface W. It is arranged along the line.

The duct 5 is formed into a tubular shape capable of accommodating the pipes 3 and 4 inside by a gutter-shaped base frame 5a and a cover frame 5b mounted so as to cover the opening of the base frame 5a. Is made.

The end cap 6 is attached to the lower end portion of the duct 5 via a joint 7, and the appearance of the duct terminal is adjusted to enhance its aesthetic appearance, and the cover frame 5b of the duct 5 is loosened and displaced due to aging. Prevent it from going down.

The end cap 6 is formed in a tubular shape including a joint portion 6a connected to the duct 5 (joint 7) and a pipe take-out portion 6b, and the air conditioning main pipe 3 led out from the pipe take-out portion 6b is an outdoor unit. Connected to 2.

[0006]

[Problems to be solved by the device]

 The conventional end cap 6 has the following drawbacks.

The air conditioning main pipe 3 is covered with a duct 5 close to the floor so as to be protected in the longest possible range, and is bent to approximately 90 ° at the exit portion of the end cap 6 and connected to the outdoor unit 2 as shown in the figure. It

In this case, in the conventional end cap 6, the pipe take-out portion 5b has almost no flexibility, and therefore the bent portion of the air conditioning main pipe 3 is pressed against the outlet end of the pipe take-out portion 5b and pressed. For this reason, this bending work is troublesome and unreasonable force acts on the bending portion.

Further, the conventional end cap 6 has the following problems in addition to this.

(A) The duct 5 has a plurality of types of diameters (generally two types of 70 mm and 80 mm) depending on the size of the pipe. ◇ In this case, in the conventional end cap 6, since the joint portion 6a is limited to one diameter, it has to be manufactured and used properly according to the duct size. Therefore, there are drawbacks such as troublesome storage / management and handling during construction.

(B) The drain pipe 4 may be taken out not in the pipe take-out portion 6b but in the middle of the duct 5 or the like for convenience of construction. On the other hand, it is desirable that the outlet portion of the pipe take-out portion 6b be dimensioned so that no extra gap is formed in order to prevent foreign matter from entering.

[0012] Due to these two points, the pipe take-out portion 6b is usually formed in a tapered shape so that the outlet portion can take out only the air conditioning main pipe 3, and the drain pipe 4 is taken out from the pipe take-out portion 6b. In this case, the outlet side of the pipe take-out portion 6b is cut at the time of construction to widen the outlet, and the drain pipe 4 is taken out together with the air conditioning main pipe 3.

For this reason, the work for taking out the drain pipe 4 becomes troublesome, and a large gap is created at the outlet portion of the pipe take-out portion 6b, and foreign matter, water, or the like enters or fills the gap from this gap. There was a problem that the caulking work was troublesome.

Therefore, the present invention provides an end cap for a duct for a pipe, in which the pipe take-out portion flexibly and flexibly follows the bending of the pipe and the pipe can be easily and easily bent.

On the other hand, the invention of claim 2 provides, in addition to this, an end cap for a duct for piping which can be used for a plurality of types of ducts having different diameters.

Further, the invention of claim 3 provides an end cap for a duct for piping, which can easily take out auxiliary pipes such as a drain pipe and the like without forming an extra gap on the outlet side of the pipe taking-out portion. Is provided.

Further, in the invention of claim 4, in the invention of claim 3, the auxiliary pipe take-out portion is opened as needed during the working, and when not in use (when the auxiliary pipe is not taken out from the take-out portion) This is to prevent foreign matter from entering the device while it remains closed.

[0018]

[Means for Solving the Problems]

 The present invention is an end cap for a pipe duct that is attached to an end of a pipe duct that covers a pipe, and includes a joint portion that is connected to the pipe duct and a pipe take-out portion that takes out the pipe. The pipe outlet is formed in a bellows shape that can be bent and expanded and contracted (claim 1).

According to a second aspect of the present invention, in the configuration of the first aspect, the joint portion is formed in a shape in which the diameter gradually changes.

According to a third aspect of the present invention, in the structure of the first or second aspect, an auxiliary pipe taking-out portion for taking out auxiliary pipes such as a drain pipe is provided on a peripheral wall of the pipe taking-out portion.

According to a fourth aspect of the present invention, in the structure of the third aspect, the auxiliary pipe outlet is in a state of protruding outward from the peripheral wall of the pipe outlet, and the tip side serving as the outlet is closed. It is formed in an open state.

[0022]

[Action]

 According to the above configuration, the pipe take-out portion flexibly deforms following the bending of the pipe, so that the pipe bending work can be easily performed without difficulty.

Further, according to the configuration of claim 2, it is possible to handle a plurality of types of diameters and can be shared by a plurality of types of ducts having different diameters, which is advantageous for storage / management, handling during construction, etc. ..

On the other hand, according to the structure of claim 3, since the auxiliary pipe such as the drain pipe can be taken out independently from the auxiliary pipe taking-out portion, when the auxiliary pipe is taken out together with the main pipe from the pipe taking-out portion as in the conventional case. Compared with the above, the work for taking out the auxiliary pipe is simplified, and there is no fear that an extra gap is created on the outlet side of the pipe taking-out portion.

Further, according to the structure of claim 4, the auxiliary pipe take-out portion may be cut off with a knife or the like to be opened at the time of construction, so that the auxiliary pipe is taken out from the auxiliary pipe take-out portion. If it is not there, there is no risk of foreign matter entering from the auxiliary pipe outlet by leaving it closed. Further, since the auxiliary pipe take-out portion is provided so as to project outward, the cutting work is easy, and there is no fear that the cutting will cause a crack in the peripheral wall of the pipe take-out portion.

[0026]

【Example】

 An embodiment of the present invention will be described with reference to FIGS.

The end cap 11 includes a joint portion 12 connected to the duct 5 of FIG. 5 through a joint 7 by a blow molding of soft plastic such as soft polyethylene, and a pipe take-out portion 13 for taking out pipes. Is formed in a continuous, cylindrical shape.

The joint portion 12 is formed by continuously forming two kinds of large and small caliber portions 12a and 12b. Depending on the duct size (for example, the most common 80 mm caliber and 70 mm caliber), the different caliber 12a or 12b is formed. Is used. 3 and 4 illustrate the case where the small diameter portion 12b is used in correspondence with the small diameter duct (joint 7).

On the other hand, the pipe take-out portion 13 has a diameter dimension enough to accommodate both the air conditioning main pipes 3 and 3 and the drain pipe 4 on the joint portion 12 side, and the pipe take-out portion 13 is formed in a constricted portion from the outlet. On the side, the dimensions are such that only the air conditioning main pipes 3, 3 can be taken out.

The entire pipe take-out portion 13 is formed into a bellows shape that can be bent and expanded and contracted, and the drain pipe take-out portion (auxiliary pipe take-out portion) 14 for taking out the drain pipe 4 is a short cylinder on the front side of the peripheral wall. It is provided so as to project like a circle. ◇ The drain pipe take-out portion 14 is formed in a non-opened state in which foreign matter, water, etc. are taken out before use and the end portion on the mouth side is closed, and it is shown in FIG. 3 when necessary during construction. As described above, this end is cut with a knife or the like to form the take-out port 15.

On the other hand, the joint 7 is composed of a fixed portion 7a attached to the wall surface and a cover portion 7b fitted and screwed to the fixed portion 7a as shown in FIGS. The fixed portion 7a and the cover portion 7b are externally fitted and connected to the joint portion 12 (the small diameter portion 12a or the large diameter portion 12b) of the end cap 11. In the figure, reference numerals 16, 17, 18 and 19 denote recesses provided in the large and small bore portions 12a and 12b for fixing the joint portion 12 to the joint 7 in the vertical direction.

Since the end cap 11 is configured as described above, when the air conditioning main pipes 3 and 3 are bent and taken out from the pipe take-out portion 13 as shown in FIGS. The main pipes 3 and 3 are freely bent in accordance with the bending. Therefore, the main pipes 3 can be easily bent in any direction.

Further, since the joint portion 12 has the large diameter portion 12a and the small diameter portion 12b, it is necessary to select and use them according to the duct size (size of the joint portion 7), that is, two types, large and small. It becomes possible to share it with the duct 5.

When using the large-diameter portion 12a as shown by the phantom line in FIG. 3, if the small-diameter portion 12b interferes with the work of passing the pipe, the small-diameter portion 12b may be cut off with a knife or the like. Good.

Further, when the end cap 11 is used, the end of the drain pipe take-out portion 14 is cut to open the take-out port 15, and the drain pipe 4 can be taken out from the drain pipe take-out portion 14 independently. As compared to the conventional end cap 6 shown in FIGS. 5 and 6, the outlet side of the pipe take-out portion 6b is cut along the entire circumference, and the drain pipe 4 is taken out from here along with the air-conditioning main pipe 3, and the cutting work is performed. Will be easier. Further, there is no problem such that a large gap is formed at the outlet of the pipe take-out portion 6b to allow foreign matter or the like to enter, or the caulking work for filling this gap is troublesome.

Further, since the drain pipe take-out portion 14 is provided so as to project in the shape of a short cylinder, the cutting work is easier and more erroneous than in the case where a part of the peripheral wall of the pipe take-out portion 13 is cut into a circle. Therefore, there is no risk of cutting larger than necessary and cracking on the peripheral wall of the pipe outlet 13 due to cutting.

In order to further facilitate this cutting operation, a stepped portion 14a is formed at the base of the drain pipe take-out portion 14, and cutting can be performed along this stepped portion 14a.

By the way, in the above-mentioned embodiment, the joint portion 12 is composed of the large and small caliber portions 12a and 12b, but three or more kinds of the caliber portions may be provided.

On the other hand, although it is desirable that the drain pipe take-out portion (auxiliary pipe take-out portion) 14 is provided so as to project outward as in the above-mentioned embodiment, a flat surface is formed on a part of the peripheral wall of the pipe take-out portion 13. Alternatively, it may be formed in a flat concave shape.

Further, with respect to the drain pipe take-out portion 14, the take-out port 15 may be preliminarily formed in accordance with a user's request such as omitting the cutting work at the time of construction. Further, the present invention is suitable for the end caps of the ducts for air conditioning pipes illustrated in the above embodiments, but can be widely applied as end caps for ducts for various pipes.

[0041]

[Effect of the device]

 As described above, according to the present invention, since the pipe take-out portion is formed into a bellows shape that can be bent and expanded and contracted, the pipe take-out portion bends freely by following the bending of the pipe, so that the pipe bending work can be performed. It can be done easily and reasonably.

Further, according to the invention of claim 2, it is possible to cope with a plurality of types of diameters and can be shared by a plurality of types of ducts having different diameters, which is advantageous for storage / management, handling during construction, etc. ..

On the other hand, according to the invention of claim 3 in which the auxiliary pipe taking-out portion for taking out the auxiliary pipe such as the drain pipe is provided on the peripheral wall of the pipe taking-out portion, the auxiliary pipe can be taken out independently from the auxiliary pipe taking-out portion. As compared with the conventional case where the auxiliary pipe is taken out together with the main pipe from the pipe take-out part, the work for taking out the auxiliary pipe is simplified and there is no fear of creating an extra gap on the outlet side of the pipe take-out part.

On the other hand, according to the invention of claim 4, the auxiliary pipe take-out portion may be cut and opened with a knife or the like as needed at the time of construction, so that the auxiliary pipe is taken out from the auxiliary pipe take-out portion. If it is not there, there is no risk of foreign matter entering from the auxiliary pipe outlet by leaving it closed. Further, since the auxiliary pipe take-out portion is provided so as to project outward, the cutting work is easy, and there is no fear that the cutting will cause a crack in the peripheral wall of the pipe take-out portion.

[Brief description of drawings]

FIG. 1 is a front view of an end cap according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line EE of FIG.

FIG. 3 is a view corresponding to FIG. 2 showing a usage state of the end cap.

FIG. 4 is a cross-sectional view taken along the line Loro of FIG.

FIG. 5 is a schematic side view showing a usage state of a conventional end cap.

FIG. 6 is an enlarged cross-sectional view of the same portion.

[Explanation of symbols]

 3 Air-conditioning main pipe 4 Drain pipe (auxiliary pipe) 5 Piping duct 11 End cap 12 Joint part 12a Large diameter part of joint part 12b Small diameter part 13 Bellows-like pipe outlet part 14 Drain pipe outlet part (auxiliary pipe outlet part)

Claims (4)

[Scope of utility model registration request] 1. An end cap of a piping duct mounted on an end portion of the piping duct covering the piping, the joint portion being connected to the piping duct, and the piping extracting portion from which the piping is taken out. An end cap for a duct for piping, characterized in that the pipe take-out portion is formed into a bellows shape that can be bent and expanded and contracted. 2. The end cap for a pipe duct according to claim 1, wherein the joint portion is formed in a shape in which the diameter changes stepwise. 3. The end cap for a duct for piping according to claim 1, wherein an auxiliary pipe take-out portion for taking out auxiliary pipe such as a drain pipe is provided on a peripheral wall of the pipe take-out portion. 4. The auxiliary pipe take-out portion is formed in a state of protruding outward from the peripheral wall of the pipe take-out portion and in a non-open state in which the tip end side serving as the take-out port is closed. The end cap of the duct for piping described in 3.