JP2000310374A - Pipe end connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a certain installed state of a pipe end connector to a facility material for wiring and piping by pushing a clocking collar part in the inside of the pipe end connector with small force and preventing the locking collar part from being pushed in the inside of the pipe end connector after a pipe body is once inserted into the inside of the pipe end connector installed on a facility material for wiring and piping such as a box. SOLUTION: One end of this connector is installed on a box B for wiring and piping, and a sheath pipe T for wiring and piping is installed on the other end side. In this case, an elastic piece 14 constituted by partitioning a drum part 2 by a cut groove 13, connected to the drum part 2 only in the axial direction by a connecting part 6 and free to deform in the diametrical direction and a locking collar part projectively provided on an outer surface of the elastic piece 14 and to install on the box are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box for wiring and piping arranged in a concrete wall of various buildings and the like.
One end is attached to the wiring and piping equipment materials to be used for wiring and piping such as wiring and piping ducts, switchboards, connectors, etc., and the other end is connected to a pipe such as a sheathing pipe for wiring and piping. It relates to a connection tool.

[0002]

2. Description of the Related Art Conventionally, there is a tube end connector in which one end is attached to a wiring and piping facility material such as an electric wiring box, and a pipe such as a sheath tube for wiring is attached to the other end. , Taiwan Patent No. 56318 (Notification No. 7820)
No. 6984) and a tube terminal connector 30 as shown in FIG.

[0003] When attaching these tube terminal fittings to the box, in the case of Taiwan Patent No. 56318, an elastic locking valve element protruding from the distal end of the tube terminal fitting is used. And in the one shown in FIG.
A locking flange 33 protruding from the distal end of an elastic tongue piece 32 defined by a cut groove 31 arranged parallel to the body of the tube end connector 30 along the axial direction is used.

[0004]

However, in the tube end connector disclosed in Taiwan Patent No. 56318, once the valve body is once mounted in the mounting hole of the box, the entire valve element enters the inside of the mounting hole of the box. Therefore, it becomes impossible to operate the valve body with a finger. Therefore, there has been a problem that the tube terminal connector cannot be removed from the box.

In the tube end connector 30 shown in FIG. 10, a considerable force is required to press the base end of the elastic tongue piece 32 to retract the locking flange 33 at the front end inward. However, there is a problem that mounting is difficult. This is because the tip of the elastic tongue piece 32 is inserted into the box, and the side surface of the box becomes an obstacle, so that the vicinity of the tip of the elastic tongue piece 32 cannot be pressed.

Further, in the tube end connector 30 shown in FIG. 10, a tubular body such as a sheath tube can be inserted only up to the middle of the stepped end of the body portion of the tube end connector 30. After attaching the terminal connector 30 and inserting the tube into the tube terminal connector 30, the tube terminal connector 3
The space between the step of the body portion 0 and the opening on the side of the flange portion 33 is an empty space in which the tubular body is not inserted, and the back surface at the distal end portion of the elastic tongue piece 32 does not contact the outer peripheral surface of the tubular body. In state. Therefore, when an external force is applied to the tip of the elastic tongue 32 from the outside toward the inside of the body, the elastic tongue 32
Will bend a predetermined amount into the body without being blocked by the tube. As a result, the insertion end portion of the tube is pushed back in the axial direction by the pressure caused by the bending of the elastic tongue piece 32, and the mounting state of the tube end connector 30 to the box may become unstable,
There was a possibility that the pipe would come off from the pipe end connector 30.

In view of the above, according to the present invention, it is possible to push the locking flange into the pipe terminal fitting with a small force, and to temporarily insert the locking flange into the pipe terminal fitting attached to the wiring and piping equipment such as a box. After the pipe is inserted, it is possible to prevent the locking flange from being pushed into the pipe terminal fitting again, and to maintain a reliable attachment state of the pipe terminal fitting to the wiring and piping equipment material. It is an object of the present invention to provide a tube terminal connector that can be used.

[0008]

According to a first aspect of the present invention, there is provided a pipe terminal connecting tool having one end attached to a wiring and piping facility material, and a wiring or piping tube attached to the other end. An elastic piece that is formed by partitioning the tube end connector main body by a cut groove, is connected to the tube end connector main body only in the axial direction, and is deformable in the radial direction, and the elastic piece. And a locking flange for attachment to the wiring / piping equipment material.

[0009] According to a second aspect of the present invention, there is provided a tube terminal connector.
2. The locking flange according to claim 1, which is formed along a circumferential direction of the elastic piece, and is gradually projected outward from a base end to a distal end of the elastic piece. It is.

[0010] According to a third aspect of the present invention, there is provided a tube terminal connector.
The elastic piece according to claim 1 or 2 has a locking claw on its inner wall for locking the tube.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tube terminal connecting device according to an embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, one end of the pipe end connector 1 of the present invention is attached to a box B as a wiring / piping equipment material disposed in a concrete wall of various buildings or the like. And
A sheath tube T, which is a tube for wiring or piping, is attached to the other end side, and the whole is integrally formed into a cylindrical shape with a synthetic resin. This pipe end connector 1 can be used for indoor wiring of electric wires or indoor piping of gas pipes / water supply pipes by further inserting an electric wire, a water supply pipe, a gas pipe, or the like into the sheath pipe T. It is.

The sheath tube T connected to one end of the tube end connector 1 is made of a synthetic resin and has uneven folds on its outer surface as shown in FIGS. Pipe is suitable, but using a metal pipe,
A VE tube or the like made of a resin having a smooth outer surface may be used.

The opening 4 on the box B side of the tube terminal connecting device 1 may be open, but may be closed with a thin sheet. The thin sheet is preferably made of resin, but may be made of waterproof paper or thin metal. When the sheet is closed with a thin sheet, concrete does not enter the inside of the pipe terminal connector 1 at the time of concrete casting. Since the wire is easily and naturally torn without need, an electric wire or the like can be quickly inserted into the pipe end connector 1.

As shown in FIGS. 2, 4, and 5, the body 2 of the tube terminal connector 1 as the main body of the tube terminal connector is defined by cutouts 11 arranged in a substantially П shape. An elastic tongue 12 is provided. Further, as shown in FIGS. 2, 3 and 5, a connecting portion connected to the body portion 2 of the tube terminal connecting device 1 located on the side opposite to the elastic tongue piece 180 by 180 degrees. An elastic piece 14 is provided, which is defined by a cut groove 13 cut out in a substantially L-shape in the circumferential direction and the axial direction except for one side in the axial direction of the portion 6. FIGS. 5 and 6 show the inner surfaces of the elastic tongue pieces 12 and the elastic pieces 14, respectively.
As shown in FIG. 1, a locking claw 15 is formed to protrude to make it difficult for the sheath tube T inserted into the tube end connector 1 to come off.

Therefore, the above-mentioned two locking claws 15 make use of the elasticity of the elastic tongue piece 12 of the tube end connector 1 and the elasticity of the connecting portion 6 of the elastic piece 14 with the body 2 to make the diameter of the tube end connector 1 larger. The outer surface of the sheath tube T inserted into the tube end connector 1 can be securely locked by utilizing its elasticity.

In the tube end connector 1 of the present embodiment, the box-side end of the body 2 is formed in the step 7 and the tip thereof is the small-diameter portion 3.
And the opening 5 on the opposite side as shown in FIG.
The distal end portion of the sheath tube T inserted from above is inserted up to the small diameter portion 3. Also, only this small diameter portion 3 is
It is designed to be inserted into a circular mounting hole B1 provided on the side surface of the box B.

At the end of the small-diameter portion 3 on the box B side, the elastic piece 14 is provided with a movable locking flange 16 along the circumferential direction. Further, the tube terminal connecting device 1
The small diameter portion 3 is provided with an immovable locking flange 17 corresponding to a position on the opposite side of the movable locking flange 16 by 180 degrees. Unlike the movable locking flange 16 provided on the elastic piece 14, the immovable locking flange 17 does not move even when a force is applied. The pair of locking flanges 16 and 17 allow the tube end connector 1 to be mounted and fixed in the mounting hole B1 of the box B.

The outward protrusion of the movable locking flange 16 is oblique so as to correspond to the amount of inward movement of the elastic piece 14 as shown in FIGS. 1, 6 and 7. Has become. That is, the movable locking flange 16 is formed along the circumferential direction of the elastic piece 14, and the amount of protrusion is smaller toward the connecting part 6, which is the base end side of the elastic piece 14, and smaller toward the distal end. The protrusion amount is large. Therefore, the mounting hole B of the box B
1 allows the movable locking flange 16 to be easily inserted into the mounting hole B1 so that the tube end connector 1 can be smoothly mounted to the mounting hole B1.

Next, a description will be given of a method of using the tube terminal connector 1 configured as described above. The pipe end connector 1 of the present invention is to be mounted in a circular mounting hole B1 formed in a wiring / piping box B which is disposed in advance at a position corresponding to a wall surface or the like before placing concrete. Then, at the time of attachment, first, the tube end connector 1 is slightly inclined, and the immovable locking flange portion 17 is inserted into the mounting hole B1 of the box B, and is locked on the inner surface of the mounting hole B1.
Thereafter, from the state shown in FIG. 7, the elastic piece 14 is pressed with a finger in the direction of the arrow inward, and the movable locking flange 16 provided on the elastic piece 14 is connected to the tube end as shown in FIG. 8. The movable locking flange 16 is also inserted into the mounting hole B1 of the box B in this state. Then, the pressing of the elastic piece 14 is stopped, the movable locking flange 16 is returned to the state shown in FIG. 7, and the inner surface of the mounting hole B1 is also locked by the movable locking flange 16 as shown in FIG. To do. Thereby, the wall of the box B is sandwiched between the movable locking flange 16 and the immovable locking flange 17 and the step 7 of the body 2, and the connection state between the box B and the pipe end connector 1 is reliably maintained. Is done.

At this time, the elastic piece 14 provided with the movable locking flange 16 is connected to the body 2 only on one axial side of the body 2 of the tube end connector 1. ,
The elastic piece 14 can be easily retracted to the inside of the tube end connector 1 even when the elastic piece 14, which is apart from the movable locking flange 16 of the elastic piece 14, is pressed near the end opposite to the box side, and the box B The attachment work of the pipe terminal connection tool 1 to the pipe is easy.
That is, unlike the case of the elastic tongue piece 32 of the conventional pipe end connector 30 shown in FIG. 10, even when the position away from the side surface of the box B is pressed, the movable locking flange 16 can be easily formed with a small force. It can be pushed into the tube end fitting 1.

Next, as shown in FIG. 5, a sheath tube T for wiring and piping is inserted from the opening 5 on the side opposite to the box of the tube end connector 1 attached to the box B. Then, the outer surface of the sheath tube T is locked by the locking claws 15 provided on the inner surfaces of the elastic tongue piece 12 and the elastic piece 14, so that the sheath tube T does not easily come off. Furthermore, since the elastic piece 14 is connected to the body 2 at the connecting portion 6 on one side in the axial direction of the body 2 of the tube end connector 1, the inner surface of the elastic piece 14 As long as it is in contact with the surface, that is, even if the sheath tube T is inserted even a little inside the elastic piece 14,
Since the inner surface of the elastic piece 14 hits the outer surface of the sheath tube T, the elastic piece 14 is reliably prevented from bending inward in the tube end connector 1. Accordingly, the movable locking flange 16 at the distal end of the tube end connector 1 does not retreat inside the tube end connector 1, and the sheath tube T inserted into the tube end connector 1 comes off. Stopping can be reliably achieved.

As described above, a concrete form or the like is installed after the installation work of the box B, the pipe end connector 1, and the sheath tube T is completed, or in parallel with the installation work. Then, in a state in which the front surface of the box B corresponds to the wall surface or the like, concrete placing work is performed to embed the box B in the concrete to form the wall surface or the like. Thereafter, the mold is removed, and an electric wire, a hot water supply pipe, a gas pipe, or the like is inserted into the sheath pipe T via the box B.

In this case, when a sheet is provided to cover the opening 4 of the pipe end connector, the sheet is spontaneously torn by the electric wire, the hot water supply pipe, or the like, and there is no need to particularly remove the sheet.

Next, another embodiment of the present invention will be described with reference to FIG. 9, which shows another embodiment of a packing structure for packing a plurality of tube terminal connectors together. In addition, about the structure same as the said Example, description is abbreviate | omitted using the same code | symbol.

The pipe end connector 1 of this embodiment has a flange 18 projecting around the body 2 of the tube end connector 1 of the above embodiment as shown in FIG. The flange 18 abuts on the outer peripheral surface of B1, the wall surface of the box B is sandwiched between the movable locking flange portion 16 and the immovable locking flange portion 17 and the flange 18, and the tube end connector 1 is attached to the box B. Has become stable.
Other configurations of the tube terminal connector 1 of this embodiment are the same as those of the tube terminal connector 1 of the above embodiment.

In this embodiment, eight tube end connection devices 1 are arranged adjacent to each other. In the upper opening 4 and the lower opening of these tube terminal fittings 1,
Preferably, sheets 20 and 21 made of a synthetic resin are adhered, and a plurality of tube end fittings 1 are packaged integrally. Therefore, the handleability of the tube terminal connector 1 at the time of distribution is significantly improved. Of course, as the material of the sheets 20 and 21, paper or thin metal foil other than synthetic resin may be used as long as it has a certain level of strength and water resistance or durability.

The attachment of the sheets 20 and 21 to the tube end connector 1 may be performed by a method using heat fusion, or may be performed using an adhesive. Sheet 2 in case of sticking by heat fusion
Reference numerals 0 and 21 each have an adhesive layer having a low melting point and easy to be thermally fused to the opening of the tube terminal connector 1 on the inner side surface of the sheet 20 or 21 in contact with the opening of the tube terminal connector 1. It is preferable to use one having a structure having a heat-resistant layer for preventing shrinkage due to heat on the outer surface of the substrate.

Further, as the sheet 20 on the upper opening 4 side of the tube end connector 1, a soft and easily torn sheet is selected, and as the lower opening sheet 21, a sheet having flexibility but not easily torn is selected. Good.

Therefore, when the tube end connector 1 is detached from the sheets 20 and 21 when the tube end connection device 1 is used, the lower sheet 21 is completely removed from the tube end connection device 1. The sheet 20 that closes the opening 4 on the upper side of the terminal connector 1 is broken so as to be cut around the opening 4, and the cut sheet 20 plays a role of a lid that closes the opening 4 as it is. I have.

For this reason, even if a cover is not provided in advance in the opening 4 of the tube terminal connector 1, the sheet 20 at the time of packing is not required.
Is used as it is, and the opening 4 is closed, so that there is an effect that the intrusion of concrete from the opening 4 can be prevented.

Further, since the lid made of the sheet 20 is easily torn, the sheet 20 is naturally torn off by inserting an electric wire or the like without any work for tearing the sheet 20, which is very convenient. is there. This is the same as the case where a sheet is provided in the opening 4 of the tube terminal fitting 1 in the first embodiment.

The present invention is not limited to the above embodiment, and without departing from the spirit of the appended claims, the cut groove, the elastic tongue, the elastic piece, the locking flange, The material, shape, dimensions, structure, quantity, etc. of the locking claws may be changed as appropriate.

Further, in addition to the box B, the pipe end connector of the present invention can be used for a box, wiring / pipe duct, or the like used in a wall of a building by a construction method in which concrete is not cast.
It can be used for various wiring and piping equipment such as switchboards and connectors.

Further, in the packing structure of the tube terminal connector of the present invention, only one opening of the tube terminal connector may be covered with a sheet.

[0035]

As described above, the pipe end connector according to the first aspect is constituted by dividing the tube end connector main body by the cut groove, and is connected to the pipe end connector main body only in the axial direction. It has an elastic piece that can be deformed in the radial direction, and a locking flange protruding from the outer surface of the elastic piece for attachment to the wiring and piping equipment material. Therefore, the locking flange can be pushed down into the tube terminal fitting with a relatively small force, and once the pipe is inserted into the tube terminal fitting attached to the box,
The locking flange is not pushed down again into the pipe end connector, so that the pipe end connector can be securely attached to the wiring and piping equipment material.

According to a second aspect of the present invention, there is provided a tube end connector, wherein the locking flange according to the first aspect is formed along the circumferential direction of the elastic piece, and the elastic piece has a base end and a distal end. It gradually protrudes outward toward the part. Therefore,
It is easy to insert the locking flange into the mounting hole of the wiring and piping equipment material.

Further, a tube end connecting device according to a third aspect has a locking claw for locking a tube to an inner wall of the elastic piece according to the first or second aspect. Therefore, the pipe can be easily and reliably fixed to the pipe end connector by the locking claws.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a tube terminal connector according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the tube terminal connector of FIG. 1 is connected to a box.

FIG. 3 is a right side view of the tube terminal connector of FIG. 1;

FIG. 4 is a left side view of the tube terminal connecting tool of FIG. 1;

FIG. 5 is a cross-sectional view showing a state in which the tube terminal connecting tool of FIG. 1 is attached to a box.

FIG. 6 is a rear view of the tube terminal connecting tool of FIG. 1;

FIG. 7 is a front view of the tube terminal connecting tool of FIG. 1;

FIG. 8 is a front view showing a state in which an elastic piece of the tube end connector of FIG. 1 is pressed.

FIG. 9 is a perspective view showing a tube end connector and a packing structure thereof according to another embodiment of the present invention.

FIG. 10 is an overall perspective view of a conventional pipe end connection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe terminal connection part 2 Body part 4 Opening part 11, 13 Cut groove 12 Elastic tongue piece 14 Elastic piece 15 Locking claw 16 Movable locking flange part 17 Immobile locking flange part 18 Flange 20, 21 Sheet 30 Pipe terminal connection part B box B1 Box mounting hole

Claims (3)

[Claims] 1. A pipe end fitting having one end attached to a wiring and piping facility material and a wiring or piping tube attached to the other end side, wherein the pipe end fitting main body is cut by a notch. An elastic piece that is formed by partitioning and that is connected to the pipe end connector main body only in the axial direction and that can be deformed in the radial direction; A tube terminal connecting device having a locking flange for attachment. 2. The locking flange portion is formed along the circumferential direction of the elastic piece, and is gradually projected outward from a base end to a distal end of the elastic piece. The tube terminal connector according to claim 1, wherein: 3. The tube end connector according to claim 1, wherein the elastic piece has a locking claw on an inner wall thereof for locking the tube.