JP2004225396A - Method of connecting leader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of connecting a leader low in cost without water leakage and facilitating connection work to a leader even with the use of an adhesive. <P>SOLUTION: In the method of connecting the leaders 1, 1 to each other through a connecting pipe 2 with one end having a spigot 21 fitted to the end part inner surface of the leader 1 and with the other end having a diameter reduced opening 22 forming a clearance groove 3 between the end part inner surface of the leader 1 and the diameter reduced opening 22, the spigot 21 of the connecting pipe 2 is fitted from the lower end of the upstream leader 1, and after forming the clearance groove 3 between the end part inner surface of the leader 1 and the diameter reduced opening 22, an adhesive is filled in the clearance groove 3. One end of an auxiliary short pipe 4 is fitted into the clearance groove 3, and the other end of the auxiliary short pipe 4 is extended downward from the lower end face of the upstream leader 1. The upper end of the downstream leader 1 is inserted around the other end of the auxiliary short pipe 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of connecting downspouts for connecting downspouts via connection pipes.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a connection structure without a step portion in which a downspout joint is hardly exposed to the outside of a downspout for aesthetic reasons (for example, see Patent Document 1).
[0003]
By the way, a gutter made of a synthetic resin such as a hard vinyl chloride resin is usually extruded continuously by an extrusion molding method and manufactured by controlling the outer diameter. The variation was relatively large. For this reason, it has been practiced to apply an adhesive to the inside of the constructed downspout on the upstream side and insert the spout of the gutter joint, but the adhesive drips or the adhesive is applied to the entire inner surface. However, there is a problem that the adhesive is not attached to the bonding surface, a gap is formed between the end of the downspout and the outlet, and water leakage occurs.
[0004]
Therefore, it has been proposed to connect without using an adhesive by using a downspout joint fitted with an elastic sealing material in order to stop water flowing down from the downspout of the upstream side (for example, Patent Document 1). 2).
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 4-47028 (FIG. 2)
[Patent Document 2]
Japanese Utility Model Laid-Open No. 4-2820 (FIGS. 1 and 2)
[0006]
[Problems to be solved by the invention]
However, in the method of connecting a downspout described in Patent Document 2, the downspout joint is hardly exposed to the outside of the downspout and can be connected well in appearance and water leakage is eliminated. There is a problem that the cost of manufacturing the downspout joint is increased due to the attachment of the sealing material.
[0007]
The present invention has been made in view of the problems in such a conventional method of connecting a downspout, and an object of the present invention is to solve the conventional problems and to use a vertical adhesive even if an adhesive is used. An object of the present invention is to provide an inexpensive method for connecting a gutter, which is easy to connect to a gutter, does not leak water, and is inexpensive.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a method for connecting a downspout according to the present invention comprises, at one end, a spout fitting with the inner surface of the end of the downspout, and forming a gap groove at the other end with the inner surface of the end of the downspout. It is a method of connecting the downspouts through a connecting pipe having a reduced diameter port, in which an inlet of the connecting pipe is fitted from the lower end of the upstream downspout, and the inner surface of the downspout end and the reduced diameter port are connected. An adhesive is injected into the gap groove after forming the gap groove between the gaps, one end of the auxiliary short pipe is fitted into the gap groove, and the other end of the auxiliary short pipe is lowered from the lower end face of the upstream downspout. It extends, and the upper end of the downstream gutter is extrapolated to the other end of the auxiliary short pipe.
[0009]
In the present invention, the shape of the connecting pipe and the auxiliary short pipe used in the method of connecting the downspout may be any suitable shape, but the shape is adapted to the shape of the downspout, and the material thereof is not particularly limited. However, for example, in addition to synthetic resins such as hard vinyl chloride resin, polyethylene, FRP, and polycarbonate, engineering plastics such as polyphenylene sulfide, or metals such as iron, stainless steel, copper, and aluminum are used alone. You may.
[0010]
[Action]
In the method of connecting the downspout of the present invention, the spout of the connection pipe is fitted from the lower end of the upstream downspout, and a gap groove is formed between the inner surface of the end of the downspout and the reduced-diameter port, and then the gap groove is formed. Inject the adhesive, insert one end of the auxiliary short pipe into the gap groove, extend the other end of the auxiliary short pipe downward from the lower end face of the upstream downspout, and downstream to the other end of the auxiliary short pipe. Since the upper end of the side gutter is extrapolated, when the auxiliary short pipe is inserted into the gap groove, the adhesive is filled and applied to the end of the gutter, and the adhesive is pressed into the gap between the connection pipe and the outlet. Water sealability is improved.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view, partially cutaway, illustrating an example of a method of connecting a downspout according to the present invention. FIG. 2 is a diagram illustrating a procedure of a method of connecting a downspout according to the present invention. FIG. 4B is a cross-sectional view showing a state in which an inlet of a connection pipe is inserted from a lower end of the pipe, and FIG. 4B is a cross-sectional view showing a state in which an adhesive is injected into a gap groove between an inner surface of a downspout end and a reduced diameter port. FIG. 3C is a cross-sectional view showing a state in which the auxiliary short pipe is fitted into the gap groove into which the adhesive has been injected, and the upper end of the lower downspout is extrapolated into the auxiliary short pipe.
[0012]
1 and 2, reference numeral 1 denotes a downspout, and the downspout 1 is a long rectangular cylinder made of hard vinyl chloride resin, and a square corner 11 is formed to be curved inward. .
[0013]
Reference numeral 2 denotes a connecting pipe used to connect the downspouts 1 to each other, and at one end thereof, an insertion port 21 to be fitted to the inner surface of the end of the downspout 1 is formed, and at the other end, the connecting pipe of the downspout 1 is provided. A reduced diameter opening 22 for forming the gap groove 3 is formed between the inner surface of the end and the inner surface of the end. Reference numeral 4 denotes an auxiliary short pipe, which has a shape fitted into the gap groove 3.
[0014]
As shown in FIG. 2, a substantially vertical step 23 is formed on the outer peripheral surface between the insertion port 21 and the reduced diameter port 22 of the connection pipe 2, and the step 23 is formed at one end of the auxiliary short pipe 4. Locking portion.
[0015]
Next, the procedure of the method for connecting the downspout of the present invention will be described.
In order to insert the inlet 21 of the connecting pipe 2 into the upstream gutter 1, the inner surface of the lower end of the gutter 1 and the outer surface of the opening end 212 of the inlet 21 of the connecting pipe 2 are aligned with each other. Into the downspout 1. At this time, if the step 23 is inserted so as to be located in the downspout 1, the gap groove 3 is formed between the downspout 1 and the diameter-reduced opening 22.
[0016]
Subsequently, after injecting the adhesive 5 into the gap groove 3, one end of the auxiliary short pipe 4 is fitted, and the other end of the auxiliary short pipe 4 extends downward from the lower end face of the upstream downspout 1. . When the one end of the auxiliary short pipe 4 is fitted, the adhesive 5 in the gap groove 3 is compressed, and the one end of the auxiliary short pipe 4 reaches the step 23.
At this time, the adhesive 5 penetrates into the gap between the inner peripheral surface of the downspout 1 and the outlet 21, and the connecting pipe 2 is adhered to the downspout 1 without water leakage, and the auxiliary short pipe 3 is also connected. Joined to the tube 2.
Finally, when the adhesive 6 is applied to the other end of the joined auxiliary short pipe 3, and then the upper end of the downstream vertical gutter 1 is extrapolated, the connection between the upper and lower vertical gutters 1 and 1 is completed.
[0017]
As described above, the embodiment of the present invention has been described with reference to the drawings. However, the specific configuration of the present invention is not limited to the illustrated embodiment, and design changes within the scope of the present invention may be made. include.
For example, although the adhesive 6 is applied to the other end of the joined auxiliary short pipe 3, the adhesive 6 does not have to be applied when connecting in a loose fitting state like an expansion joint.
[0018]
【The invention's effect】
In the method of connecting the downspout of the present invention, the spout of the connection pipe is fitted from the lower end of the upstream downspout, and a gap groove is formed between the inner surface of the end of the downspout and the reduced-diameter port, and then the gap groove is formed. Inject the adhesive, insert one end of the auxiliary short pipe into the gap groove, extend the other end of the auxiliary short pipe downward from the lower end face of the upstream downspout, and downstream to the other end of the auxiliary short pipe. In order to extrapolate the upper end of the side gutter, the outlet of the connecting pipe is bonded and fixed to the inner surface of the gutter without any gap.
Therefore, the connection with the downspout is easy with only the adhesive, there is no water leakage, and there is no need to use an elastic sealing material, so that the cost is low.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view illustrating an example of a method of connecting a downspout according to the present invention.
FIG. 2 is a view for explaining a procedure of a method of connecting a downspout according to the present invention. FIG. 2 (a) is a cross-sectional view showing a state in which an inlet of a connection pipe is inserted from a lower end of an upstream downspout, and FIG. ) Is a cross-sectional view showing a state in which the adhesive has been injected into the gap groove between the inner surface of the end of the downspout and the reduced diameter opening, and FIG. 2C shows an auxiliary short pipe fitted into the gap groove into which the adhesive has been injected. It is sectional drawing which shows the state which is combined and extrapolates the upper end of a lower downspout to an auxiliary | assistant short pipe.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Downspout 2 Connecting pipe 21 Insert 22 Reducing port 23 Step 3 Gap 4 Auxiliary short pipe 5 Adhesive

Claims (1)

The pits are connected to each other via a connecting pipe that has an insertion port at one end that fits the inner surface of the pit end, and a reduced diameter port that forms a gap groove between the pit end and the inner surface at the other end. In this method, the inlet of the connecting pipe is fitted from the lower end of the upstream gutter, a gap is formed between the inner surface of the end of the gutter and the reduced diameter port, and then the adhesive is injected into the gap. Then, one end of the auxiliary short pipe is fitted into the gap groove, the other end of the auxiliary short pipe extends downward from the lower end face of the upstream vertical gutter, and the downstream vertical gutter is inserted into the other end of the auxiliary short pipe. A method for connecting a downspout, wherein the upper end is extrapolated.

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