JPH09100978A - Corrugated pipe fitting - Google Patents

Abstract

(57) Abstract: An object of the present invention is to connect corrugated tubes to each other easily and without any trouble. SOLUTION: Corrugated pipes 11 and 12 are inserted from both ends of a cylindrical main body 2 of a corrugated pipe connector 1, and a locking piece 4 defined by a cut line 5 is pushed into the main body 2 by a pushing block 3 and the engagement is performed. The ends of the stop 4 are engaged with the corrugated troughs 14, 15 of the corrugated tubes 11, 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting corrugated pipes used for protection pipes for covering power lines, communication lines and the like.

[0002]

BACKGROUND OF THE INVENTION When a power line or communication line is buried in the ground, it is covered and protected by a protective tube. A flexible synthetic resin corrugated tube is used as the protective tube. A tubular connecting tool is used to connect the corrugated tubes to each other, and the connecting ends of a pair of corrugated tubes to be connected are inserted from both ends of the connecting tool to connect the corrugated tubes. It is necessary to provide a pull-out prevention means so that the connecting end of the pipe does not come out.

[0003]

2. Description of the Related Art Conventionally, for example, as shown in FIG. 6, it is composed of half-split cylindrical bodies (13A, 23A), and each of the half-split cylindrical bodies (13A, 23A) is provided with a plurality of recesses (12A). The provided corrugated pipe connector (1A) is provided (Japanese Utility Model Laid-Open No. 4-36193). In the corrugated pipe connector (1A), a pair of corrugated pipes (2A,
3A) butts the connecting ends of the corrugated pipe connector (1A) to the butted portion, and attaches the half-split tubular bodies (13A, 23A) of the corrugated pipe connector (1A) to each half split tubular body (13A, 23A). The corrugated tube (2A, 3A) with the recess (12A)
Fit the flange (5A) of the half-cylindrical body (13A, 23A) on top of each other, and fit it on the bolt (27A) and nut (26A).
Conclude with A).

[0004]

In the above conventional corrugated pipe connector (1A), the corrugated pipe is formed by fitting the recessed portion (12A) into the corrugated valley of the corrugated pipe (2A, 3A). It is to prevent the (2A, 3A) from coming off, but it is a half-split cylindrical body (13A, 23A)
Has to be attached and fastened to the corrugated pipe (2A, 3A) connection part, which is very troublesome to connect the corrugated pipe.

[0005]

As a means for solving the above-mentioned conventional problems, the present invention provides a cylindrical main body (2) into which a pair of corrugated pipes (11, 12) to be connected are inserted from both ends. A cut line (5) is provided on the peripheral surface of both ends, and a locking piece (4) consisting of a wide part (6) from the center part and a narrow part (7) from the end part is defined inside the cut line (5). Has a width W ₃ equal to or smaller than the width W _{1 of the} wide portion (6) and larger than the width W _{2 of the} narrow portion (7), and the length L _{1 of the} wide portion (6) Guide grooves (9) are provided on both sides of the pushing block (3) having a length L ₃ equal to or smaller than
The width W ₄ between the innermost walls (10) of (9) is the width W ₂ of the narrow width part (7).
Equal to or less than, and push the wide portion (6) of the locking piece (4) inward by the push block (3), and push the push block (3) to the narrow portion (7) side. Slide it to fit the guide groove (9) on both sides of the push-in block (3), and fit the outer peripheral wall part (13) of the narrow width part (7) of the locking piece (4). The wide part of the locking piece (4)
Waveform set so that the end of (6) is engaged with the troughs (14,15) of the corrugated pipe (11,12) inserted from both ends of the cylindrical body (2) It provides a tube fitting (1).

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a corrugated pipe connector (1) of the present invention comprises a cylindrical body (2) made of an elastic material such as metal and plastic, and a push block (3). A cut line (5) is provided on the peripheral surface of both ends of the main body (2), and a locking piece (4) is defined inside thereof. As shown in FIG. 2, the locking piece (4) has a wide portion (6) having a width W ₁ and a length L ₁ , and a width W.
₂ (W ₂ <W ₁ ), a narrow width portion (7) having a length L ₂ , the wide width portion (6) being arranged from the central portion of the main body (2),
(7) is arranged from the end of the body (2), and the narrow portion
At the end of (7), cutouts are provided at both ends of the score line (5).
(8) are formed and thus the locking piece (4) is
With the terminal of (7) as a fulcrum, it can be deformed vertically and elastically,
The cutout (8) of the cut line (5) is such a locking piece (4).
The anti-elastic deformation of is facilitated.

Width W ₃ and length L _{3 of the} pushing block (3)
Are set to be equal to or smaller than the width W ₁ and the length L ₁ of the wide width part (6) of the locking piece (4), respectively, but the width W ₃ of the pushing block (3) is set to the locking piece (3). 4) Narrow width part (7) width W ₂
It is set larger than. That is, W ₁ ≧ W ₃ > W ₂ ,
L ₁ ≧ L ₃ and therefore the pushing block (3)
Can be fitted into the wide part (6) of the locking piece (4).
A guide groove (9) is provided on both sides of the pushing block (3), and the width W ₄ between the innermost walls (10) of the guide groove (9) is narrower than that of the locking piece (4). It is set equal to or smaller than the width W ₂ of the width portion (7). That is, W ₂ ≧ W ₄ .

As shown in FIG. 3, the connection ends of the corrugated pipes (11, 12) are inserted from both ends of the cylindrical body (2) of the corrugated pipe connector (1). And the wide part of each locking piece (4) of the main body (2)
Push the block (3) into the (6) and press the locking piece (4)
Is bent inward, and then the pushing block (3) is slid toward the narrow portion (7) side of the locking piece (4), as shown in FIG. 4, the guide groove (9) of the pushing block (3). ), The outer peripheral wall portion (13) of the narrow portion (7) is fitted to the locking piece (4), and the pushing block (3) is fixed in the vertical direction. In this way, the end of the wide portion (6) of the locking piece (4) is connected to the corrugated pipe (11,
12) is engaged with the troughs (14, 15) of the corrugated pipe (1
1,12) are prevented from slipping out of the corrugated pipe fitting (1).

FIG. 5 shows another embodiment of the push-in block. Guide grooves (29) are provided on both side surfaces of the pushing block (23), the bottom surface (30) is an inclined surface, and both side edges of the bottom surface (30) are projecting edges (31), A locking step portion (32) is formed at the lowest position of the protruding edge (31). In the push-in block (23), the locking step portion (32) of the protruding edge (31) of the bottom surface (30) includes the wide width portion (6) and the narrow width portion (7) of the locking piece (4). The push-in block (23) is prevented from coming out by being locked to the stepped portion (33) between and.

[0010]

According to the present invention, since the corrugated pipe is inserted into the corrugated pipe connector having a simple structure, and the corrugated pipes are fixed by the push-in block by the pushing piece, the corrugated pipes can be smoothly connected to each other and fixed securely. You can do it.

[Brief description of the drawings]

 1 to 4 show an embodiment of the present invention.

FIG. 1 is a perspective view

FIG. 2 is an explanatory plan view of a locking piece and a pushing block.

FIG. 3 is a sectional view of a connecting portion.

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is a perspective view of another embodiment of the pushing block.

FIG. 6 is a conventional perspective view.

[Explanation of symbols]

 1 Corrugated pipe connector 2 Main body 3,23 Push block 4 Locking piece 5 Notch line 6 Wide part 7 Narrow part 9,29 Guide groove 10 Innermost wall 11,12 Corrugated pipe 14,15 Valley part

Claims (1)

[Claims] 1. A cylindrical main body into which a pair of corrugated pipes to be connected are inserted from both ends, is provided with cut lines on both circumferential surfaces, and a wide portion from the central portion and a narrow width from the end portions are provided inside thereof. defining a locking piece consisting of a section, the length of the wide-width portion has a greater width W ₃ than the width W ₂ of width W ₁ or equal to and smaller than the narrow width portion of the wide width portion A guide groove is provided on both side surfaces of the pushing block having a length L ₃ equal to or smaller than L ₁ , and the width W ₄ between the innermost walls of the guide groove is equal to the width W ₂ of the narrow portion. Set equal or less, push the wide portion of the locking piece inward by the pushing block, and slide the pushing block to the narrow portion side, the guide groove on both sides of the pushing block Fit the outer peripheral wall of the narrow part of the locking piece,
In this state, the corrugated pipe connector is set so that the ends of the wide portion of the locking piece are engaged with the troughs of the corrugated pipe inserted from both ends of the cylindrical body.