JPH07109805A - Universal elbow - Google Patents

Abstract

PURPOSE:To improve workability by adjusting an angle skillfully. CONSTITUTION:A universal elbow has a first bent pipe A where a socket 2 having a connecting part 21 to which a vertical gutter can be connected is arranged on one end of a curved pipe 1 and a second bent pipe B where a socket 3 to which a vertical gutter can be connected is arranged on one end of a curved pipe 4 having a curved part 41 in which the curved pipe 1 of the first bent pipe A can be inserted. The curved pipe 1 of the first bent pipe A is inserted in the curved part 41 of the second bent pipe B so that the side tirning to the arc center is put in the same direction. In the universal elbow constituted in this way, a spring piece 13 is arranged in the vicinity of the opening end of the curved pipe 1 of the first bent pipe A, and a projecting part 15 brought into pressure contact with an inside surface of the curved part 41 of the second bent pipe B by deforming elastically the spring piece 13, is arranged on the tip of the spring piece 13. A recessed part 43 to regualte sliding motion of the first bent pipe A in the slipping-out direction by fitting to the projecting part 15 of the first bent pipe A, is formed in the vicinity of the opening end of the curved part 41 of the second bent pipe B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a free elbow to which a vertical gutter can be connected and the angle of the vertical gutter can be adjusted.

[0002]

2. Description of the Related Art Conventionally known universal elbows include
For example, there is one described in Japanese Utility Model Publication No. 3-9434. This conventional free elbow is a slanted insertion of a first curved pipe having a connecting portion to which a vertical gutter can be connected at one end of a curved portion curved in an arc shape, and the curved portion of the first curved pipe. And a second bent pipe in which a connection portion capable of connecting a downpipe is provided at one end of the bent portion, and the first bent pipe is formed depending on an insertion depth of the bent portion of the first bent pipe. The angle between the axis of the connecting part and the axis of the connecting part of the second bent tube can be adjusted.

[0003]

However, in such a conventional free elbow, the angle adjustment between the axis of the connecting portion of the first bent pipe and the axis of the connecting portion of the second bent pipe is performed. At the same time, the curved portion of the first curved pipe may come off from the curved portion of the second curved pipe, and the first curved pipe may be bent by the clearance between the curved portion of the first curved pipe and the curved portion of the second curved pipe. The curved part of the pipe rattles inside the curved part of the second curved pipe,
Since the curved portion of the first bent pipe may unexpectedly slide, there is a problem that it takes a lot of time and effort to adjust the angle.

In view of the above problems, an object of the present invention is to provide a universal elbow capable of adjusting the angle properly and improving the workability.

[0005]

In order to achieve the above object, in the universal elbow according to the present invention, a connecting portion to which a vertical gutter can be connected is provided at one end of a curved portion curved in an arc shape.
The curved pipe and the second curved pipe in which a connecting portion to which a vertical gutter can be connected are provided at one end of the curved portion into which the curved portion of the first curved pipe can be inserted are provided. A flexible elbow constructed by inserting the curved portion of the first curved pipe into the curved portion of the second curved pipe so that the sides facing the center are in the same direction, in the vicinity of the open end of the curved portion of the first curved pipe. Is provided with a spring piece, and the tip of the spring piece is provided with a convex portion that elastically deforms the spring piece and is brought into pressure contact with the inner surface of the curved portion of the second bent pipe. The bent portion of the bent tube is engaged with the convex portion of the first bent tube in the vicinity of the opening end of the bent portion to form the first bent tube.
The configuration is such that an engaging portion that restricts the sliding of the bent pipe in the slip-out direction is formed. In addition, the first bent pipe and the second bent pipe,
When the curved portion of the first curved pipe is inserted into the curved portion of the second curved pipe so that the side facing the center of the arc faces the opposite side by 180 degrees, the axial center of the connecting portion of the first curved pipe and the second curved pipe You may form the engaging part which engages mutually, when the axis of a connection part becomes parallel, and which mutually controls sliding and rotation of a 1st bending pipe.

[0006]

In the universal elbow according to the first aspect, when the convex portion provided on the spring piece of the first bent pipe elastically deforms the spring piece and is pressed against the inner surface of the curved portion of the second bent pipe, The frictional resistance generated between the convex portion of the first curved pipe and the curved portion of the second curved pipe is much higher than the frictional resistance generated between the curved portion of the first curved pipe and the curved portion of the second curved pipe. Therefore, when the angle between the axis of the connecting portion of the first bent pipe and the axis of the connecting portion of the second bent pipe is adjusted, the bending portion of the first bending pipe and the bending portion of the second bending pipe are The clearance between the first curved pipe does not cause the curved portion of the first curved pipe to rattle inside the curved portion of the second curved pipe, and the curved portion of the first curved pipe does not slide abruptly.

When the insertion depth of the first bent pipe is reduced until the convex portion of the first bent pipe and the engaging portion of the second bent pipe are engaged with each other, the first bent pipe moves in the pulling direction. Sliding is regulated.

In the universal elbow according to the second aspect, the curved portion of the first curved pipe is inserted into the curved portion of the second curved pipe so that the side facing the center of the arc faces 180 degrees in the opposite direction, and the first curved pipe. When the engaging portion of the pipe and the engaging portion of the second curved pipe are engaged with each other, the axis of the connecting portion of the first curved pipe and the axis of the connecting portion of the second curved pipe are set parallel to each other, and , The first bent pipe is fixed to the second bent pipe by restricting sliding and rotation of the first bent pipe even without adhesion or the like.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of a universal elbow according to an embodiment will be described with reference to FIGS. The universal elbow of the present embodiment is composed of a first curved pipe A and a second curved pipe B.

The first curved pipe A is a curved pipe (corresponding to a curved portion in the claims), as shown in FIG. 1 (a).
1 and socket 2.

The curved pipe 1 is formed by bending a flat shamisen-shaped pipe into an arc shape in cross section, and a ceiling wall 12 having a circular opening 11 is provided at one end thereof. (See Fig. 4 and Fig. 6)
A spring piece 13 formed by cutting out a portion is provided.
Further, four claws 14 are provided at equal intervals on the edge of the opening 11 formed in the ceiling wall 12, and a convex portion 15 is provided on the outer surface of the tip of the spring piece 13. Two spring pieces 13 are provided on opposite side surfaces, and the convex portion 15 is provided on both spring pieces 13. Further, the spring piece 13 is arranged at a position slightly closer to the side facing the center O of the arc than the axis S-S of the bending tube 1.

[0012] The socket 2 has a connecting portion 21 formed in such a shape that it can be connected by inserting a vertical gutter having a flat shamisen-shaped cross section into the socket 2. One end of the connecting portion 21 has the curved pipe. There is provided a cylindrical portion 22 inserted into the opening 11 of No. 1. Further, the socket 2 has the connection portion 21.
Two grooves 23 are formed on the opposite side surfaces of the groove according to the cross-sectional shape of the vertical gutter.
This is formed, and on the outer peripheral surface of the cylindrical portion 22, a ridge 24 engaged with the claw 14 of the bending tube 1 is continuously formed over the entire circumference.

As shown in FIG. 1B, the second bent tube B is composed of a socket (corresponding to the connecting portion in the claims) 3 and a curved tube 4.

The socket 3 is formed in such a shape that a vertical gutter having a flat shamisen-shaped cross section can be inserted into the socket 3 for connection, and a ceiling wall 32 having a circular opening 31 is provided at one end thereof. (See FIGS. 4 and 6). Further, the socket 3 has two grooves 33 formed on the opposite side surfaces in accordance with the cross-sectional shape of the vertical gutter.
On one edge, four claws 34 are provided at equal intervals.

The bending tube 4 has a bending portion 41 formed by bending a flat shamisen-shaped tube in an arc shape in cross section, and the socket 3 is provided at one end of the bending portion 41. A cylindrical portion 42 inserted into the opening 31 is provided. Further, in the bending tube 4, concave portions (corresponding to the engaging portion in the claims) 43 which can be engaged with the convex portions 15 of the first bending tube 1 are formed at two locations on the inner surface of the bending portion 41. The claw 34 of the socket 3 is provided on the outer peripheral surface of the cylindrical portion 42.
Is formed continuously over the entire circumference.

It should be noted that, as shown in FIG. 5, the concave portion 43 is formed so that the sides facing the center O of the arc have the same orientation.
When the curved pipe 1 of the curved pipe A is inserted into the curved portion 41 of the second curved pipe B, the convex portion 15 of the first curved pipe A engages, and as shown in FIG. 180 facing
The bending pipe 1 of the first bending pipe A is inserted into the bending portion 41 of the second bending pipe B so as to face the opposite direction, and the axial center XX of the connecting portion 21 of the first bending pipe A and the second bending pipe are inserted. It is formed in a substantially S-shape so that the convex portion 15 of the first bent pipe A engages when the axis Y-Y of the socket 3 of the pipe B becomes parallel.

The arc angle θ of the bending tube 1 of the first bent tube A and the arc angle θ of the bending tube 4 of the second bent tube B are the same.

Next, the operation of the first embodiment will be described.

First, as shown in FIG. 8, when the angle of the gutter H attached along the roof Y is made to correspond to the roof slope, the first direction is such that the sides facing the center O of the arc are in the same direction.
The bending tube 1 of the bending tube A is inserted into the bending portion 41 of the second bending tube B, and the axial center X- of the connecting portion 21 of the first bending tube A is set depending on the insertion depth of the bending tube 1 of the first bending tube A. The angle α between X and the axis Y-Y of the socket 3 of the second bent tube B is adjusted.

2 to 4, the convex portion 15 formed on the spring piece 13 of the first bent tube A elastically deforms the spring piece 13 to bend the second bent tube B. The frictional resistance generated between the convex portion 15 of the first curved pipe A and the curved portion 41 of the second curved pipe B when pressed against the inner surface of the portion 41 is the same as that of the curved pipe 1 of the first curved pipe A. The frictional resistance generated between the curved portion 41 of the two-bent pipe B is extremely high. Therefore, the first
When adjusting the angle α between the axis XX of the connecting portion 21 of the bent tube A and the axis YY of the socket 3 of the second bent tube B,
Due to the clearance between the curved pipe 1 of the first curved pipe A and the curved portion 41 of the second curved pipe B, the curved pipe 1 of the first curved pipe A
Does not rattle inside the curved portion 41 of the second curved pipe B, and the curved pipe 1 of the first curved pipe A does not slide unexpectedly.

Further, as shown in FIGS. 5 and 6, the insertion depth of the first curved pipe A is reduced until the convex portion 15 of the first curved pipe A and the concave portion 43 of the second curved pipe B are engaged with each other. At this time, the first bent pipe A is restricted from sliding in the pull-out direction.

That is, the clearance between the curved pipe 1 of the first curved pipe A and the curved portion 41 of the second curved pipe B causes the first
The bent pipe A does not rattle and the first bent pipe A does not slide unexpectedly, and moreover, the curved pipe 1 of the first bent pipe A is hard to come off from the curved portion 41 of the second bent pipe B. , When making the angle of the gutter H correspond to the roof slope, between the axis XX of the connection part 21 of the first bent tube A and the axis YY of the socket 3 of the second bent tube B. The angle α can be adjusted skillfully,
Good workability.

Further, as shown in FIG. 9, the obstacle C on the wall K is
In the case of eccentricity of the vertical gutter T adjacent to the first curved pipe 1 of the first curved pipe A, the curved pipe 1 of the first curved pipe A faces the second curved pipe B so that the side facing the center O of the arc faces 180 degrees. Curved part 41
And the convex portion 15 of the first curved pipe A and the concave portion 43 of the second curved pipe B are engaged with each other. Then, the axis XX of the connecting portion 21 of the first bent tube A and the axis YY of the socket 3 of the second bent tube B are set parallel to each other, and even if bonding or the like is not performed, The one bend pipe A is fixed to the second bend pipe B with sliding and rotation being restricted.

That is, the axis X-X of the connecting portion 21 of the first bent tube A and the axis Y-Y of the socket 3 of the second bent tube B are set parallel to each other without tedious work. Therefore, it can be used not only when there is an obstacle C on the wall K and it is necessary to decenter the vertical gutter T, but also the workability at that time is excellent.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, in the embodiment, the curved portion of the first curved pipe is arranged so that the convex portion of the first curved pipe and the concave portion of the second curved pipe have the same direction on the side facing the center of the arc. The function of restricting the sliding of the first curved pipe in the slip-out direction when it is inserted into the pipe, and the curved portion of the first curved pipe so that the side facing the center of the arc faces the opposite 180 degrees. And a function of restricting sliding and rotation of the first bent pipe when the axis of the connecting part of the first bent pipe and the axis of the connecting part of the second bent pipe are parallel to each other. Although it is possible to perform both of the above, the convex portion and the concave portion that perform the former function, and the convex portion and the concave portion that perform the latter function may be separately provided at different positions.

Further, the engaging portion that engages with the convex portion of the spring piece is
Not limited to the concave portion, a groove or a protrusion may be formed. Furthermore,
The engaging portion for exhibiting the latter function is not limited to the combination of the convex portion and the concave portion, and may be a combination of a hole and a protrusion, a protrusion and a protrusion, or the like.

[0027]

As described above, in the universal elbow according to the first aspect of the present invention, the curved portion of the first curved pipe is hard to come off from the curved portion of the second curved pipe, and moreover, the curved portion of the first curved pipe is The first curved pipe does not rattle due to the clearance between the curved portion and the curved portion of the second curved pipe, and the first curved pipe does not slide unexpectedly. The angle between the bent pipe and the connecting portion can be adjusted finely, and the workability can be improved.

Further, in the universal elbow according to the second aspect, the axis of the connecting portion of the first curved pipe and the axis of the connecting portion of the second curved pipe are made parallel to each other without performing a troublesome work. Since it can be set, it can be used when the vertical gutter T is eccentric, and the workability at that time is also good.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing components of a universal elbow according to an embodiment.

FIG. 2 is a perspective view showing a universal elbow according to an embodiment.

FIG. 3 is a sectional view showing a universal elbow according to an embodiment.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view showing a universal elbow according to an embodiment.

6 is a cross-sectional view taken along the line VI-VI of FIG.

FIG. 7 is a sectional view showing a universal elbow according to an embodiment.

FIG. 8 is a view showing a construction state of the universal elbow according to the embodiment.

FIG. 9 is a view showing a construction state of the universal elbow according to the embodiment.

[Explanation of symbols]

 A 1st bending pipe 1 Bending pipe (bending part) 13 Spring piece 15 Convex part 2 Socket 21 Connection part B 2nd bending pipe 3 Socket (connection part) 4 Bending pipe 41 Bending part 43 Recessed part

Claims (2)

[Claims] 1. A first bent pipe having a connecting portion to which a vertical gutter can be connected at one end of a curved portion curved in an arc shape, and an arc shape into which the curved portion of the first bent pipe can be inserted. A second bent pipe having a connection part to which a vertical gutter can be connected is provided at one end of the curved part, and the curved part of the first bent pipe is arranged so that the sides facing the center of the arc are in the same direction. In a free elbow configured to be inserted into a curved portion of a two-bent pipe, a spring piece is provided near an open end of the curved portion of the first bent tube, and a spring piece is provided at a tip of the spring piece. A convex portion that is elastically deformed and is pressed against the inner surface of the curved portion of the second curved pipe is provided, and a convex portion of the first curved pipe is provided near the opening end of the curved portion of the second curved pipe. A flexible elbow, characterized in that an engaging portion is formed which engages with the first curved pipe and restricts the sliding of the first curved pipe in the slip-out direction. 2. The bending portion of the first bending pipe is inserted into the bending portion of the second bending pipe so that the first bending pipe and the second bending pipe face 180 degrees opposite to each other on the side facing the center of the arc. When the axis of the connecting portion of the first bent pipe and the axis of the connecting portion of the second bent pipe are parallel to each other, an engaging portion is formed which engages with each other to regulate sliding and rotation of the first bent pipe. The flexible elbow according to claim 1, wherein