JPH07103371A - Adapter for pipe fitting - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an adapter for a pipe joint part which does not deteriorate hydraulic performance even when used in sewers or the like by being attached to the pipe joint part. [Structure] A tube in which an adapter 1 for a pipe joint portion attached to a pipe joint portion 4 is attached from an inner peripheral surface 7 of a pipe 6 following a rear end surface 5 of a receiving opening 2 to an inner peripheral surface 8 of a distal end portion of an insertion opening 3. Rubber plate 9
And a plurality of L-shaped metal plates 10 arranged in the tubular rubber plate 9 at predetermined intervals in the circumferential direction.
It consists of and. The cylindrical rubber plate 9 is provided with the rear end surface 5 of the receptacle 2.
Mouth-side mounting portion 11 mounted on the inner peripheral surface 7 of the pipe 6 following
An insertion opening side mounting portion 12 to be mounted on the inner peripheral surface 8 of the distal end portion of the insertion opening 3 and a bending portion 13 that connects these portions flexibly, and the tubular rubber plate 9 is attached to the inner peripheral surface 7 of the pipe 6. To the inner peripheral surface 8 of the tip portion of the insertion port 3 to cover the gap 19 of the pipe joint portion 4 to improve hydraulic performance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint adapter mounted on a pipe joint between a receiving opening and an insertion opening inserted in the receiving opening.

[0002]

2. Description of the Related Art As shown in FIG.
In the pipe joint portion 23 between the insertion opening 22 and the insertion opening 22 inserted in the reception opening 21, the rear end surface 24 of the reception opening 21 and the tip end portion 25 of the insertion opening 22 have a gap 26 in the pipe axial direction. Are joined together.

[0003]

However, when the pipe having the pipe joint portion 23 having the above-mentioned conventional structure is used for sewer or the like, the gap 26 is exposed to the flow passage in the pipe,
There is a problem that sediment in the sewage accumulates in the gaps 26 such as the lower part of the pipe joint portion 23 to impede the flow and reduce hydraulic performance.

The present invention solves the above problems and provides a pipe joint adapter which is attached to a pipe joint so that the hydraulic performance does not deteriorate even when used in sewers or the like. It is intended.

[0005]

In order to solve the above-mentioned problems, the present invention provides a pipe joint adapter mounted on a pipe joint between a receiving opening and an insertion opening inserted into the receiving opening,
It is attached from the inner peripheral surface of the pipe continuing from the rear end surface of the receiving port to the inner peripheral surface of the distal end portion of the insertion port, and is attached to the receiving side mounting portion mounted on the inner peripheral surface of the pipe and the inner peripheral surface of the distal end portion of the insertion port. And an insertion-side mounting portion, and the receiving-side mounting portion and the insertion-side mounting portion are elastically bendably connected to each other. The insertion side contact portion embedded in the outer circumferential surface of the mouth side mounting portion is erected from the insertion side contact portion to the outer peripheral side of the pipe, and is sandwiched between the tip end portion of the insertion opening and the rear end surface of the reception opening. A substantially L-shaped rigid plate having an insertion-side contact portion and a rising portion that swings the insertion-side mounting portion of the tubular elastic member so as to follow the inner surface of the end portion of the insertion opening when mounted; An insertion side contact portion of the plurality of rigid plates and a locked portion in which a temporary fixing locking member for temporarily making the insertion side mounting portion of the tubular elastic member into a tapered shape is provided. Prepare It is intended.

[0006]

In the above construction, when the receiving opening and the insertion opening are joined, first, the receiving side mounting portion of the tubular elastic member is mounted on the inner peripheral surface of the pipe following the rear end surface of the receiving opening. By disposing the temporary fixing locking member in the locked portion, the insertion side contact portions of the plurality of rigid plates and the insertion side mounting portion of the tubular elastic member are elastically bent to temporarily It is formed in a tapered shape so that the insertion opening does not interfere with the insertion side contact portion of the rigid plate and the insertion side mounting portion of the tubular elastic member when the insertion opening is inserted into the receiving opening. next,
By inserting the insertion opening into the receiving opening, the tip of the insertion opening comes into contact with the rising portion of the rigid plate, and the rising portion of the insertion opening pushes the rising portion of the rigid plate toward the rear end surface of the receiving opening. As a result, the insertion side contact portion of the rigid plate and the insertion side mounting portion of the tubular elastic member are gradually expanded, and as a result, the temporary locking member is cut. When the locked state by the temporary locking member is released, the insertion-side contact portion and the insertion-side mounting portion of the cylindrical elastic member are attached to the inner peripheral surface of the tip of the insertion portion by the elastic force of the cylindrical elastic member. Close along. As a result, the gap of the pipe joint between the receiving port and the insertion port is covered by the tubular elastic member, so that the flow at the pipe joint portion is smoothed by the tubular elastic member and good hydraulic performance is maintained. In addition, even when the pipe is used for sewerage or the like, sediment in the sewage is prevented from accumulating in the gap of the pipe joint portion, and deterioration of hydraulic performance due to the sediment is prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a pipe joint portion adapter mounted on a pipe joint portion 4 between a receiving opening 2 and an insertion opening 3 inserted into the receiving opening 2. Is
A tubular rubber plate 9 as a tubular elastic member to be mounted from the inner peripheral surface 7 of the pipe 6 following the rear end surface 5 of the receiving opening 2 to the inner peripheral surface 8 of the distal end portion of the insertion opening 3, and the tubular rubber plate 9 It is composed of a plurality of L-shaped metal plates 10 as rigid plates arranged in a state of being divided at predetermined intervals in the circumferential direction.

On the tubular rubber plate 9, a receiving side mounting portion 11 having a substantially lip-shaped cross section, which is mounted on the inner peripheral surface 7 of the pipe 6 following the rear end surface 5 of the receiving opening 2, and inside the tip portion of the insertion opening 3. An insertion-side attachment portion 12 having a substantially lip-shaped cross-section attached to the peripheral surface 8 and a bending portion 13 that elastically bendably connects the receiving-side attachment portion 11 and the insertion-side attachment portion 12 with each other. It is provided.

The L-shaped metal plate 10 is a tubular rubber plate 9.
The substantially trapezoidal insertion-side abutting portion 1 embedded in a circumferentially outer surface of the insertion-side mounting portion 12 in a divided state at appropriate intervals in the circumferential direction.
4 and a standing portion 15 which stands from the insertion side contact portion 14 to the outer peripheral side of the pipe.

Here, the insertion side mounting portion 12 of the tubular rubber plate 9
The portion between the adjacent insertion side contact portions 14 is thin and the thin portion 16 can be easily curved. Further, on the outer peripheral surface of the pipe joint adapter 1 on the insertion side, the entire circumference of the insertion side abutting portion 14 of the L-shaped metal plate 10 and the insertion side mounting portion 12 of the tubular rubber plate 9. A wire rod groove portion 18 as a locked portion for winding the thin metal wire 17 as a temporary locking member is formed over the entire length.

In the above structure, when the receiving port 2 and the insertion port 3 are joined, as shown in FIGS. 3 and 4, first, the receiving side mounting portion 11 of the tubular rubber plate 9 is received. Pipe 6 following the rear end face 5 of 2
The metal thin wire 17 is wound around the wire groove portion 18 while being attached to the inner peripheral surface 7 of the, and the thin-walled portion 16 of the tubular rubber plate 9 is curved so that the insertion side contact portion of the L-shaped metal plate 10 is curved. 14
Also, the insertion-side attachment portion 12 of the tubular rubber plate 9 is temporarily tapered. As a result, when the insertion port 3 is inserted into the receiving port 2, the insertion port 3 interferes with the insertion side contact portion 14 of the L-shaped metal plate 10 and the insertion side mounting portion 12 of the tubular rubber plate 9. Is prevented and the insertion of the insertion slot 3 is facilitated.

Next, when the insertion opening 3 is inserted into the receiving opening 2, as shown in FIG. 5, the tip end portion of the insertion opening 3 comes into contact with the rising portion 15 of the L-shaped metal plate 10 and the insertion opening 3 is inserted. The upright portion 15 of the L-shaped metal plate 10 is pressed by the tip of the L-shaped metal plate 10 toward the side close to the rear end surface 5 of the receiving port 2, so that the insertion-side contact portion 14 of the L-shaped metal plate 10 and the tubular rubber plate 9 are pressed. The insertion-side mounting portion 12 is gradually expanded, and the thin metal wire 17 is cut.

When the locked state by the thin metal wire 17 is released, as shown in FIG. 1, the insertion side contact portion 14 of the L-shaped metal plate 10 and the insertion side mounting portion 12 of the tubular rubber plate 9 are removed. Due to the elastic force of the tubular rubber plate 9, the cylindrical rubber plate 9 comes into close contact with the inner peripheral surface 8 of the distal end portion of the insertion slot 3. As a result, the gap 19 of the pipe joint portion 4 between the receiving port 2 and the insertion port 3 is covered by the tubular rubber plate 9, so that the flow at the location of the pipe joint portion 4 is smoothed by the tubular rubber plate 9. The hydraulic performance is kept good. Further, even when the pipe 6 is used for sewerage or the like, sediment in the sewage is prevented from accumulating in the gap 19 of the pipe joint portion 4, so that the sediment is not obstructed and the flowability is improved. There is no loss of performance. Furthermore, the gap 1 of the pipe joint portion 4
Since sewage and the like is prevented from positively flowing into the pipe 9, the anticorrosion performance of the pipe joint portion 4 facing the gap 19 is improved. Even if the watertightness between the tubular rubber plate 9 and the inner peripheral surface 7 of the pipe 6 and the watertightness between the tubular rubber plate 9 and the inner peripheral surface 8 of the distal end portion of the insertion port 3 are not completely maintained, The effect can be obtained.

[0014]

As described above, according to the present invention, a substantially L-shaped rigid plate and a locked portion in which a temporary locking member is disposed are provided, and the tubular elastic member is received. Since it is configured to be mounted from the inner peripheral surface of the pipe following the innermost surface of the pipe to the inner peripheral surface of the tip of the insertion port, the flow of the pipe joint is smoothed by the cylindrical elastic member, and the hydraulic performance is kept good, In addition, even when the pipe is used for sewers, etc., sediment in the sewage is prevented from accumulating in the gap of the pipe joint part, so the flow is obstructed by this sediment and hydraulic performance may deteriorate. It can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a pipe joint adapter according to an embodiment of the present invention.

FIG. 2 is a sectional view of the adapter for the pipe joint section taken along line II-II in FIG. 1.

FIG. 3 is a cross-sectional view showing a state before the insertion of the adapter for the pipe joint section before insertion.

FIG. 4 is a side view of the adapter for the pipe joint section taken along the line IV-IV in FIG. 3.

FIG. 5 is a cross-sectional view showing a state of the pipe joint adapter when a thin metal wire is cut.

FIG. 6 is a cross-sectional view of a conventional pipe joint portion.

[Explanation of symbols]

 1 Adapter for Pipe Joint Part 2 Receptacle 3 Insertion Port 4 Pipe Joint Part 5 Inner End Surface 6 Pipe 7 Inner Surface 8 Tip Inner Surface 9 Cylindrical Rubber Plate (Cylindrical Elastic Member) 10 L-Shaped Metal Plate (Rigid Plate) 11 Receptacle Side Attachment Part 12 Insertion Side Attachment Part 13 Bent Part 14 Insertion Side Abutment Part 15 Standing Part 16 Thin Section 17 Metal Fine Wire (Locking Member for Temporary Fixing) 18 Wire Material Groove (Locked Part) 19 Gap

Claims (1)

[Claims] 1. An adapter for a pipe joint portion, which is mounted on a pipe joint portion between a receiving opening and an insertion opening inserted in the receiving opening, the inner peripheral surface of the pipe continuing to a rear end surface of the receiving opening. These are provided by being mounted on the inner peripheral surface of the distal end portion of the insertion opening, and having a receiving side mounting portion mounted on the inner peripheral surface of the pipe and an insertion side mounting portion mounted on the inner peripheral surface of the distal end portion of the insertion opening. A bending portion tubular elastic member in which the receiving-side attachment portion and the insertion-side attachment portion are elastically bendably connected to each other, and an insertion embedded in the outer circumferential surface of the insertion-side attachment portion of the tubular elastic member. The mouth-side abutting portion and the insertion-side abutting portion and the tube when standing upright from the mouth-side abutting portion to the outer peripheral side of the pipe and sandwiched between the tip of the mouth and the rear end surface of the mouth. A substantially L-shaped rigid plate having an upright portion that swings the insertion-side mounting portion of the elastic member along the inner surface of the end of the insertion port, and insertion-side contact portions of the plurality of rigid plates, And a locked portion in which a temporary locking locking member for temporarily making the insertion side mounting portion of the tubular elastic member into a tapered shape is provided. Adapter for.