JPH07233889A - Coupling - Google Patents

Abstract

PURPOSE:To permit the one-touch type connection between a waved flexible pipe and a special kind pipe and secure the watertight connection. CONSTITUTION:The first and the second cylindrical packings P1 and P2 which are installed on the outer peripheries of the end parts of a waved flexible pipe 3 and a special kind pipe 4 are provided. On the outer periphery of the first cylindrical packing P1, the first retainer 5 is arranged. On the outer periphery of the second cylindrical packing P2, the second retainer 6 which has a stop fitting 35 having a pipe fixing part 40 is arranged. On the stop fitting 35, a chuck 36 having a cylinder part 55 for fixing the special kind pipe 4 formed is installed. The first insertion cylinder part 65 of a connecting member 7 is inserted into the first insertion groove 30 formed on the first retainer 5, and compresses the first cylindrical packing P1. The second insertion cylinder part 66 of the connecting member 7 is inserted into the second insertion groove 50 of the stop fitting 35. On the outer periphery of the connecting member 7, the first engagement recessed part 67 for the engagement of the first engagement hook 27 of the first retainer 5 and the second engagement recessed part 68 for the engagement of the second engagement hook 46 of the stop fitting 35 are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint used for fixing a pipe, such as a corrugated flexible pipe used as a protective pipe for a cable buried in the ground and a straight pipe or another corrugated pipe. Regarding a joint for connecting with a flexible tube, more specifically,
The present invention relates to a joint that can be connected in a one-touch type and that can be reliably waterproofed.

[0002]

2. Description of the Related Art Cables such as electric power cables and communication cables have recently tended to be buried underground. For this reason, many pipes such as a corrugated flexible pipe, an electric wire pipe, and a vinyl chloride pipe are used as a protective pipe for a cable buried in the ground. Along with this, it becomes necessary to connect a flexible pipe with a wave and a straight pipe such as a conduit pipe or a vinyl chloride pipe, and as a joint thereof,
There is a demand for a product that has reliable waterproofness and is easy to install.

Conventionally, a sleeve type joint has been known as a joint for connecting a corrugated flexible pipe and a straight pipe such as an electric wire pipe or a PVC pipe. In this sleeve type joint, a corrugated flexible tube and a dissimilar tube are inserted into both ends, putty is packed, and waterproof tape is wound on the putty to connect.

Further, as another conventional joint, a sleeve type resin joint in which a spiral groove and a straight groove are formed is also known. In this joint, a corrugated flexible tube is screwed into the spiral groove side, a dissimilar tube is inserted into the straight groove side, tightened with a collar, and waterproof tape is wound on each side for connection.

[0005]

However, the conventional joint of this type has a drawback that the on-site construction is complicated and the construction requires a long time. With such poor workability, it is difficult to expect a completely waterproof connection in the field construction.

Therefore, recently, there has been a demand for the development of a plug-in type one-touch type joint. For example, as shown in Japanese Utility Model Laid-Open No. 64-792 and Japanese Utility Model Laid-Open No. 62-54391, a joint for connecting a corrugated flexible tube in a one-touch system has been developed, but there is a problem in terms of sealing property. Have

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a joint which can be connected by a one-touch method and can be reliably connected in a waterproof manner.

[0008]

In order to achieve the above object, a joint according to the present invention comprises an elastic cylindrical packing which is mounted on the outer periphery of an end portion of a pipe, and the cylindrical packing which is axially arranged. A retainer having a packing pressing portion for pressing and having a pipe fixing means that can be fixed to the outer circumference of the pipe by elastically bending in the radial direction toward the pipe, and the tubular packing. And a connecting member that is detachably connected to the retainer.

It is preferable that the tip end surface of the packing pressing portion is an inclined surface whose outer side in the radial direction projects with respect to the inner side. According to this structure, by pushing the packing axially with the tip of the packing pressing portion, the packing is pushed inward in the radial direction, and the packing is brought into close contact with the inner circumference of the pipe to improve the water tightness.

The retainer has, for example, a packing pressing portion that presses the tubular packing in the axial direction, and a pipe fixing portion that can elastically bend radially toward the outer periphery of the pipe. Is fixed to the stopper and is fixed to the stopper, and is in contact with the pipe fixing portion of the stopper to bend the pipe fixing portion toward the inner peripheral side to fix the pipe. And a chuck in which a tubular portion is formed.

It is preferable that a locking recess is formed on the outer periphery of the connecting member so that a locking claw formed on the outer periphery of the stopper forming a part of the retainer can be detachably locked. . It is preferable that the connecting member is provided with a rib that prevents rotation of the stopper with respect to the connecting member.

Alternatively, the retainer is formed with a packing pressing portion for pressing the cylindrical packing in the axial direction, and is fixed to the outer circumference of the tube by pressing so as to be elastically bendable in the radial direction. The packing pressing tool formed with an arm and the packing pressing tool are attached so as to be relatively movable along the axial direction, and abut on a convex portion formed on the outer peripheral surface of the packing pressing tool to fix the pipe. It can be configured with a locking arm ring in which a guide surface for fixing the pipe by bending the arm inward is formed.

[0013] It is preferable that an engaging recess is formed on the outer periphery of the connecting member so that the engaging claw formed on the outer periphery of the engaging arm ring can detachably engage. It is preferable that a rib that prevents rotation of the locking arm ring with respect to the connecting member is provided on the outer periphery of the connecting member.

It is preferable that the insertion cylindrical portion formed on the connecting member is configured so as to directly press the outer circumference of the cylindrical packing to compress the cylindrical packing radially inward. On the outer periphery of the connecting member, other than the recess for locking,
It is preferable that a temporary fixing recess in which the locking claw is detachably locked is formed closer to the distal end side of the insertion cylinder than the locking recess.

The joint between the first corrugated flexible tube and another tube according to the present invention comprises a first tubular packing having elasticity and mounted on the outer circumference of the end of the corrugated flexible tube to be connected. An elastic second tubular packing to be attached to the outer periphery of the end of the straight pipe, a retainer formed with a fitting portion for the outer periphery of the corrugated flexible pipe, and the second tubular packing as an axis. A packing pressing portion that presses in a direction is formed, and a stopper that is in contact with the outer circumference of the other pipe and is formed with a pipe fixing portion that can be elastically bent in the radial direction, and the stopper. A chuck that is fastened to the tool and is in contact with the tube fixing portion of the stopper to bend the tube fixing portion toward the inner peripheral side to fix the other tube. And the first tubular shape inserted into the first insertion groove formed on the outer peripheral side of the packing holding portion of the retainer. A first insertion cylinder portion that compresses the packing radially inward, a second insertion cylinder portion that is inserted into a second insertion groove formed on the outer periphery side of the pipe fixing portion of the stopper, and the first and second insertion cylinder portions. And a connecting member having partition walls formed in pressure contact with the ends of the second tubular packing. The first locking claw formed on the outer periphery of the retainer is detachably attached to the outer periphery of the connecting member. There are formed a first locking recess for locking with and a second locking recess for removably locking the second locking claw formed on the outer circumference of the stopper.

It is preferable that a rib is provided on the outer periphery of the connecting member to prevent the stopper from rotating with respect to the connecting member. The joint between the second corrugated flexible tube according to the present invention and another tube includes a first tubular packing having elasticity, which is mounted on the outer circumference of the end portion of the corrugated flexible tube to be connected, and a tubular shape. The second tubular packing having elasticity, which is attached to the outer periphery of the end portion of the dissimilar pipe having the above-mentioned shape, the retainer in which the fitting portion for the outer periphery of the corrugated flexible tube is formed, and the second tubular packing. A packing pressing part that is formed with a packing pressing part that presses in the axial direction, is in pressure contact with the outer circumference of the other tube, and has a packing pressing part that can be elastically bent in the radial direction. The packing pushing tool is attached so as to be relatively movable along the axial direction, and abuts on a convex portion formed on the outer peripheral surface of the packing pushing tool to bend the packing pushing portion to the inner circumferential side and to Locking arm ring formed with a guide surface for fixing the tube of A first insertion cylinder part that is inserted into a first insertion groove formed on the outer peripheral side of the packing holding part of the groove and compresses the first cylindrical packing to the radially inner peripheral side, and the packing of the packing pressing tool. A connecting member formed with a second insertion cylindrical portion inserted into a second insertion groove formed on the outer peripheral side of the pressing portion and partition walls that are in pressure contact with the ends of the first and second cylindrical packings, respectively. And a first locking recess for removably locking a first locking claw formed on the outer circumference of the retainer, and an outer circumference of the locking arm ring. A second locking recess is formed in which the second locking claw is removably locked.

It is preferable that a rib is provided on the outer periphery of the connecting member to prevent the locking arm ring from rotating with respect to the connecting member. In the first and second joints, the second insertion tubular portion is formed so as to directly contact the outer periphery of the second tubular packing and compress the second tubular packing radially inward. It is preferable.

Moreover, in the first and second joints, the first locking claw is detachably locked to the outer periphery of the connecting member in addition to the first and second locking recesses. (1) Second part in which the temporary fixing concave part and the second locking claw are detachably locked
It is preferable to form a temporary fixing recess.

[0019]

In order to make a connection using the joint between the first corrugated flexible tube according to the present invention and another tube, the following procedure is performed. First, the retainer and the first tubular packing are attached to the end of the corrugated flexible tube to be connected. Next, the first insertion cylinder portion of the connecting member is pushed into the first insertion groove portion of the retainer. Then, the first locking claw of the retainer enters the first locking recess of the connecting member and locks on the edge portion thereof. Also, the second
The tubular packing is attached to the connecting member at a predetermined position, and another tube is inserted into the stopper and the chuck. Next, the second connecting member
Push the insertion tube into the second insertion groove of the stopper. Then, the second locking claw of the stopper enters into the second locking recess of the connecting member and locks on the edge portion thereof. Then, when the chuck is tightened with respect to the stopper, the tubular portion of the chuck contacts the pipe fixing portion of the stopper, so that the pipe fixing portion of the stopper elastically bends inward. As a result, the other pipe is fixed to the pipe fixing portion of the stopper, and the retainer and the stopper are connected via the connecting member to prevent the retainer from coming off. Therefore,
The corrugated flexible tube and another tube can be connected in a one-touch system.

The connecting member may be screwed onto the outer circumference of the end portion of the corrugated flexible tube while being attached to either the retainer or the stopper, or may be inserted into the outer circumference of the end portion of another pipe. It may be attached.
In the first joint of the present invention, the first insertion tubular portion of the connecting member is
By entering into the first insertion groove of the retainer, the outer peripheral surface of the first tubular packing is directly or indirectly pushed to the inner peripheral side and elastically bent and compressed. As a result, the inner circumference of the first tubular packing is pressed against the outer circumference of the corrugated flexible tube, and the sealing performance of the first tubular packing is ensured. Further, as a result of the second insertion tubular portion of the connecting member entering the second insertion groove portion of the stopper, and the packing pressing portion of the stopper axially presses the second tubular packing, as a result, the inside of the second tubular packing is closed. The circumference is pressed against the outer circumference of another tube, and the sealing performance of the second tubular packing is ensured.

Further, since both sides of the partition wall portion formed on the connecting member are in pressure contact with the end portions of the first and second tubular packings, the gap between the joint portions of the corrugated flexible tube and the other tube is different from each packing. Satisfactorily sealed. Therefore, the waterproof function of the joint of the present invention is improved. Further, when the rib is provided on the outer periphery of the connecting member, the stopper does not rotate with respect to the connecting member, so that the inserting operation of the stopper and the tightening operation of the chuck can be easily performed.

The connection between the corrugated flexible tube and another tube using the second joint according to the present invention is performed as follows. First, the retainer and the first tubular packing are attached to the end of the corrugated flexible tube to be connected. Next, the first insertion cylinder portion of the connecting member is pushed into the first insertion groove portion of the retainer.
Then, the first locking claw of the retainer enters the first locking recess of the connecting member and locks on the edge portion thereof. Also,
The second tubular packing is attached to the connecting member at a predetermined position, and another tube is inserted into the packing pushing tool and the locking arm ring.

Next, the second insertion cylinder portion of the connecting member is pushed into the second insertion groove portion. Then, the second of the locking arm ring
The locking claw enters the second locking recess of the connecting member and locks on the edge thereof. As a result of the packing pressing portion of the packing pressing tool pressing the second tubular packing, a force in the direction of returning is applied to the packing pressing tool due to the elastic force of the second tubular packing. This force is converted into a force that causes the packing pressing portion of the packing pressing tool to bend toward the inner peripheral side when the convex portion of the packing pressing tool contacts the guide surface of the locking arm ring.

As a result, the packing pressing portion of the packing pressing tool elastically bends and comes into pressure contact with the outer circumference of another tube. As a result, the other tube is fixed to the packing pressing portion of the packing pressing tool, and the retainer and the locking arm ring are connected through the connecting member to prevent the retainer from coming off. Therefore, the corrugated flexible tube and another tube can be connected in a one-touch manner.

The connecting member may be screwed to the outer circumference of the end portion of the corrugated flexible tube while being attached to either the retainer or the locking arm ring.
Alternatively, it may be attached to the outer circumference of the end of another tube. In the second joint of the present invention, the first connecting member
When the insertion tubular portion is inserted into the first insertion groove portion of the retainer, the outer peripheral surface of the first tubular packing is directly pushed to the inner circumferential side and elastically bends to compress the first tubular packing. As a result, the inner circumference of the first tubular packing is pressed against the outer circumference of the corrugated flexible tube, and the sealing performance of the first tubular packing is ensured. Moreover, as a result of the second insertion cylindrical portion of the connecting member entering the second insertion groove portion and the packing pressing portion of the packing pressing tool pressing the second cylindrical packing in the axial direction, the inner circumference of the second cylindrical packing is The second tubular packing is pressed against the outer circumference of the other tube to ensure the sealing property of the second tubular packing.

Further, since both sides of the partition wall portion formed on the connecting member are in pressure contact with the ends of the first and second tubular packings, the gap between the corrugated flexible tube and the other tube is different from each other. Satisfactorily sealed. Therefore, the waterproof function of the joint of the present invention is improved. Further, when the rib is provided on the outer periphery of the connecting member, the engaging arm ring does not rotate with respect to the connecting member, so that the engaging arm ring can be easily inserted.

Further, in the first and second joints, the second insertion tubular portion of the connecting member is brought into direct pressure contact with the outer periphery of the second tubular packing to compress the second tubular packing radially inward. By doing so, the following effects are further provided. That is,
The second insertion tubular portion also presses the inner circumference of the second tubular packing against the outer circumference of the other tube, further improving the sealing performance of the second tubular packing.

Further, in the first joint, in addition to the first and second locking recesses, a first temporary fixing recess in which the first locking claw is detachably locked is provided on the outer periphery of the connecting member, and By forming the second temporary fixing recess in which the two locking claws are detachably locked, the connecting member can be integrated with the retainer and the fastener by temporary fixing. As a result, it contributes to the reduction of the number of parts in the storage or transportation of the parts and facilitates the storage or transportation.

Similarly, also in the joint between the second corrugated flexible tube and another tube, if the temporary fixing recess is formed, the connecting member can be integrated with the retainer and the locking arm ring by locking. , Easy to store or transport. When connecting straight pipes with each other by using the joint according to the present invention, in the first joint and the second joint, it is assumed that the pipes connected by the joint are straight pipes, and similarly. Can be done by

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The joint according to the present invention will be described in detail below with reference to the embodiments shown in the drawings. First Embodiment As shown in FIG. 1, a joint (hereinafter, also simply referred to as a joint) 2 between a corrugated flexible tube and another pipe according to the present embodiment is an end portion of a corrugated flexible tube 3. It is a joint 2 for sealingly connecting to the end of another pipe (pipe in this embodiment) 4. Flexible tube with corrugation 3
Inside the other pipe 4, cables such as a power cable and a communication cable are arranged. These corrugated flexible tubes 3
The other pipe 4 (hereinafter, referred to as “different pipe 4”) is buried in the ground, for example. In this embodiment, spiral corrugations are formed on the outer circumference of the corrugated flexible tube 3.

The joint 2 of this embodiment has first and second tubular packings P1 and P2, a first retainer 5, a second retainer 6 and a connecting member 7. First tubular packing P1
Is attached to the outer periphery of the end portion of the corrugated flexible tube 3, and the second tubular packing P2 is attached to the outer periphery of the end portion of the heterogeneous pipe 4. The tubular packings P1 and P2 are made of elastic packing material such as butyl rubber, chloroprene rubber, neoprene rubber, nitrile rubber, and natural rubber.

The first tubular packing P1 is shown in FIG.
As shown in (B), it has a hole 10. Packing P1
On the inner circumference of the hole portion 10, there are at least one spiral inward projection 11 that matches the spiral uneven shape formed on the outer circumference of the corrugated flexible tube 3, and the end of the corrugated flexible tube 3. A stopper surface 12 that abuts is formed. Also, the first tubular packing P1
3A, a step 13 for holding and a convex piece 14 are formed on the outer periphery of the rear end side shown on the left hand side in FIG.

As will be described later, the holding step 13 has a packing holding portion 22 of the first retainer 5 as shown in FIG.
Are engaged with each other, and the convex piece 14 is fitted into the pitch adjusting concave portion 23 (see FIG. 5A) of the first retainer 5. The first tubular packing P1 is screwed onto the outer circumference of the end portion of the corrugated flexible tube 3.

The second tubular packing P2 is shown in FIG.
As shown in (B), a stopper surface 16 having a hole 15 and against which the end of the dissimilar pipe 4 abuts is formed. As shown in FIG. 1, a first retainer 5 is arranged on the outer periphery of the first tubular packing P1. The first retainer 5 has an inner cylindrical portion 20, and an inner peripheral portion 20 thereof has an inner peripheral portion 20 as shown in FIGS.
At least one spiral inward projection 21 is formed as a fitting portion for fitting to the outer circumference of the end portion of the corrugated flexible tube 3. The spiral inward projection 21 matches the spiral shape of the corrugated flexible tube 3. With this spiral inward projection 21,
The first retainer 5 is screwed onto the outer circumference of the corrugated flexible tube 3.

The inner tubular portion 20 of the first retainer 5 is provided with a packing holding portion 22 which holds the packing P1 by engaging with the holding step 13 formed on the first tubular packing P1. . Further, the convex piece 14 formed on the first tubular packing P1 is fitted to form the concave portion 23 for pitch-matching the spiral inner protrusion 11 of the packing P1 with the spiral inner protrusion 21 of the first retainer 5. Has been formed.

The packing holding portion 22 may be constituted by an elastic cylindrical body which covers the outer periphery of the packing P1 without engaging with only part of the packing P1 shown in FIG. In that case, the first insertion cylinder portion 65 of the connecting member 7, which will be described later, indirectly presses the packing P1 via the packing holding portion 22.

As shown in FIGS. 5 and 6, an outer cylinder portion 24 is continuously provided on the outer periphery of the inner cylinder portion 20. The outer tubular portion 24 is connected to the inner tubular portion 20 by the side wall portion 25, and these are integrally formed. A plurality of locking arms 26 (eight in this embodiment) are integrally formed on the outer cylinder portion 24 at substantially equal intervals in the circumferential direction. A locking claw 27 protruding toward the inner peripheral side is formed at the tip of the locking arm 26, and a tapered guide surface 28 is formed at the inner circumference of the tip.

Corresponding to the locking claw 27, the side wall portion 25 is
A hole 29 is formed. By forming this hole 29, it becomes possible to integrally form the first retainer 5 having the locking claw 27 by resin molding such as injection molding.
Between the locking arm 26 and the packing holding portion 22, the first
The insertion groove portion 30 is formed. The first insertion tubular portion 65 of the connecting member 7 shown in FIGS. 1 and 2 is inserted into the first insertion groove portion 30.

The synthetic resin forming the first retainer 5 is not particularly limited, and examples thereof include polypropylene (PP), polyethylene (PE), acrylonitrile-butadiene-styrene (ABS) and the like. As shown in FIG. 1, a second retainer 6 for compressing the packing P2 and fixing the dissimilar pipe 4 is arranged on the outer periphery of the second tubular packing P2. The second retainer 6 is shown in FIGS.
As shown in FIG. 7, it comprises a stopper 35 and a chuck 36, and the stopper 35 has an inner cylindrical portion 37 as shown in FIG.

A packing pressing portion 38 for pressing the rear end portion of the second tubular packing P1 is integrally formed on the inner tubular portion 37 of the stopper 35. At the tip of the packing pressing portion 38,
An inclined pressing surface 39 is formed so that the radially outer side projects with respect to the inner side. By forming such an inclined pressing surface 39,
By pushing the packing P2 in the axial direction by the tip of the packing pressing portion 38, the packing P2 is pushed inward in the radial direction, and the packing comes into close contact with the inner circumference of the dissimilar pipe 4 to improve the water tightness.

Further, at the rear end portion of the inner cylindrical portion 37, there are integrally formed tapered flexible plates 40 (eight in this embodiment) with which a chuck 36 described later abuts. This tapered flexible plate 40
As shown in FIG. 7, the cantilevered beam-shaped piece is formed by dividing the tubular protruding portion 41 integrally formed with the inner tubular portion 37 by the slit 42 in the circumferential direction substantially evenly. . The tapered flexible plates 40 are arranged substantially evenly in the circumferential direction. The tapered flexible plate 40 is in pressure contact with the outer periphery of the heterogeneous pipe 4 and functions as a pipe fixing portion that can elastically bend in the radial direction.

As shown in FIG. 7, an outer cylindrical portion 43 is continuously provided on the outer circumference of the inner cylindrical portion 37. The outer tubular portion 43 is connected to the inner tubular portion 37 by the side wall portion 44, and these are integrally formed. A plurality of locking arms 45 (eight in this embodiment) are integrally formed on the outer cylinder portion 43 at substantially equal intervals in the circumferential direction. A locking claw 46 protruding toward the inner peripheral side is formed at the tip of the locking arm 45, and a tapered guide surface 47 is formed at the inner circumference of the tip. A male screw portion 48 is formed on the outer circumference of the rear end of the outer cylinder portion 43.

Similar to the first retainer 5, the side wall portion 44 has
A hole 49 is formed corresponding to the locking claw 46. A second insertion groove portion 50 is formed between the locking arm 45 and the packing pressing portion 38. In the second insertion groove portion 50,
The 2nd insertion cylinder part 66 of the connection member 7 shown in FIGS.

The stopper 35 is, for example, PP, PE, ABS.
It is a resin molded product molded from a synthetic resin such as. As shown in FIG. 8, the chuck 36 has an inner cylindrical portion 55 (corresponding to a cylindrical portion). The inner cylindrical portion 55 is provided with a tapered pressing surface 56 corresponding to the tapered flexible plate 40 of the stopper 35. An outer cylinder portion 58 is integrally formed on the outer circumference of the inner cylinder portion 55 via a rib 57. On the outer periphery of the outer cylinder part 58,
A plurality of convex portions 59 (eight in this embodiment) are integrally formed at substantially equal intervals in the circumferential direction. A female screw portion 60 that meshes with the male screw portion 48 of the stopper 35 is formed on the inner circumference of the tip of the outer tubular portion 58.

The chuck 36 is made of, for example, PP, PE, A.
It is a resin molded product molded from a synthetic resin such as BS. FIG. 9 shows a state in which the female screw portion 60 of the chuck 36 is screwed into the male screw portion 48 of the stopper 35, and the tapered pressing surface 56 formed on the inner cylindrical portion 55 of the chuck 36 is tapered by the stopper 35. It is in contact with the flexible plate 40.

As shown in FIGS. 10 and 11, the connecting member 7 has first and second insertion tube portions 65 and 66 extending from the substantially central portion toward both sides. A first locking recess 67 is formed on the outer periphery of the first insertion cylinder 65 near the center, and a second locking recess 68 is formed on the outer periphery of the second insertion cylinder 66 near the center. Is formed. The first locking recess 67 is shown in FIG.
As shown in FIG. 3, the locking claw 2 formed at the tip of the locking arm 26 of the first retainer 5 mounted on the outer circumference of the corrugated flexible tube 3.
7 enters and the edge portion 69 of the recess 67 (see FIG. 10)
It is designed to be locked to. Also, the second locking recess 6
As shown in FIG. 1, the locking claw 46 formed at the tip of the locking arm 45 of the stopper 35 mounted on the outer periphery of the heterogeneous tube 4 is inserted into the groove 8, and the edge portion 70 of the recess 68 (see FIG. 10). (See reference).

Further, as shown in FIGS.
The first locking recess 6 is formed on the outer periphery of the insertion tube 65 near the tip.
7 is formed with a first temporary fixing concave portion 71,
The second locking recess 6 is formed on the outer periphery of the insertion tube portion 66 near the tip.
A second temporary fixing recess 72, which is separate from that of FIG. 8, is formed. Each temporary fixing recess 71, 72 is formed continuously in the circumferential direction. A first locking stepped portion 73 is formed at the tip end side end of the first temporary fixing recess 71, and a first guiding inclined portion 74 is formed at the rear end side end portion. As shown in FIG.
As shown in FIG. 7, the locking claw 27 of the locking arm 26 of the first retainer 5 is locked and temporarily fixed, and the connecting member 7 is relatively pushed into the first retainer 5, so that the locking claw 27 Is pushed up to the outer periphery of the connecting member 7 along the first guiding inclined portion 74 and enters the first engaging recess 67.

Similarly, as shown in FIGS.
A second locking stepped portion 75 is formed on the tip end side of the temporary fixing recess 72, and a second guiding inclined portion 76 is formed on the rear end side end. As shown in FIG. 2, the locking claw 46 of the locking arm 45 of the stopper 35 is locked and temporarily fixed to the second locking recess 72, and the connecting member 7 is connected to the second retainer 6. By relatively pushing in, the locking claw 46 is pushed up to the outer periphery of the connecting member 7 along the second guiding inclined portion 76 and enters the second locking recess 68.

A tapered inclined surface 77 is formed on the inner peripheral surface of the first insertion cylinder portion 65 of the connecting member 7. By forming this tapered inclined surface 77, as shown in FIG.
The workability of inserting the insertion tube portion 65 into the first insertion groove portion 30 of the first retainer 5 becomes easy. The tapered inclined surface 77 directly presses the first cylindrical packing P1 to
The sealing property of the tubular packing P1 is made more reliable.

Of the inner peripheral surface of the second insertion cylinder portion 66, a portion near the tip is a tapered inclined surface 78 to facilitate the workability of inserting the stopper 35 into the second insertion groove portion 50. on the other hand,
Of the inner peripheral surface of the second insertion cylinder portion 66, the second cylindrical packing P2
The part to which is attached is formed substantially parallel to the outer peripheral surface of the second tubular packing P2.

As shown in FIGS. 1, 10 and 11, the connecting member 7 has packings P1,
A partition 79 is formed in pressure contact with the end of P2. By pressing both surfaces of the partition wall portion 79 against the ends of the packings P1 and P2, the sealing performance of the packings P1 and P2 is improved.

Further, two detents for preventing rotation of the stopper 35 with respect to the connecting member 7 are fitted on the outer periphery of the second insertion cylinder portion 66 between the locking arms 45 of the stopper 35. The ribs 80, 80 are formed at symmetrical positions.
The connecting member 7 of this embodiment is, for example, PP, PE, ABS.
Although it is made of a synthetic resin such as, it may be made of a metal.

The connecting member 7 according to this embodiment is stored and transported in a state of being connected to the first retainer 5 and the stopper 35 in advance. That is, the locking claw 27 of the locking arm 26 formed on the first retainer 5 is temporarily locked in the first temporary locking recess 71 of the connecting member 7, and is locked in the second temporary locking recess 72. Locking Claw 46 of Locking Arm 45 Formed on Tool 35
Is temporarily locked, and the connecting member 7, the first retainer 5, and the second retainer 6 are integrated. When the first retainer 5 is temporarily locked to the connecting member 7, the protruding piece 1 of the first tubular packing P1 is used.
By fitting 4 into the recess 23 of the first retainer 5, the spiral inward projection 11 of the first tubular packing P1 and the first
The first tubular packing P1 is attached or bonded in advance with the helical inward projections 21 of the retainer 5 aligned in pitch. When the stopper 35 is temporarily locked to the connecting member 7, the second packing P2 may be attached to the connecting member 7 in advance.

The connection between the corrugated flexible tube 3 and the dissimilar tube 4 using the joint 2 according to this embodiment is performed as follows. First, the first retainer 5 integrated with the connecting member 7
Is screwed into the outer circumference of the end of the corrugated flexible tube 3 to be connected. At this time, since the first temporary fixing recess 71 is formed continuously in the circumferential direction, the first retainer 5 can rotate relative to the connecting member 7. When the corrugated flexible tube 3 is screwed in until its end contacts the stopper surface 12 of the first tubular packing P1, the first retainer 5 is pushed axially into the connecting member 7 to connect it. The first insertion cylinder portion 65 of the member 7 is pushed into the first insertion groove portion 30 of the first retainer 5. Then, the locking claw 27 formed at the tip of the locking arm 26 of the first retainer 5 enters into the first locking recess 67 of the connecting member 7 and locks on the edge 69 thereof.

Next, the stopper 3 integrated with the connecting member 7
The dissimilar pipe 4 is inserted into 5 until its end contacts the stopper surface 16 of the second packing P2. At that time, the locking arm 45 of the stopper 35 is prevented from rotating by the rotation preventing rib 80. After that, the stopper 35 is pushed axially with respect to the connecting member 7 so that the second insertion tubular portion 66 of the connecting member 7 is
The stopper 35 is pushed into the second insertion groove portion 50. Then, the locking claw 46 formed at the tip of the locking arm 45 of the stopper 35.
Enters the second engaging recess 68 of the connecting member 7 and engages with the edge 70 thereof.

Then, when the chuck 36 is tightened, the tapered pressing surface 56 of the chuck 36 contacts the tapered flexible plate 40, and the tapered flexible plate 40 elastically flexes and comes into pressure contact with the outer circumference of the other tube 4. . Therefore, the other pipe 4 is firmly fixed by the pipe fixing portion of the stopper 35, that is, the tapered flexible plate 40.

As a result, the first retainer 5 and the stopper 35
Are connected via a connecting member 7 to prevent them from coming off. Therefore, the corrugated flexible tube 3 and the other tube 4 can be connected in a one-touch manner. In this embodiment, the first insertion tubular portion 65 of the connecting member 7 having the tapered inclined surface 77.
However, when the taper-shaped inclined surface 77 is inserted into the first insertion groove portion 30 of the first retainer 5, the tapered inclined surface 77 becomes the first tubular packing P1.
Is directly compressed. As a result, the inner circumference of the first tubular packing P1 is pressed against the outer circumference of the corrugated flexible tube 3, and the sealing performance of the first tubular packing P1 is improved. Moreover, since the packing pressing portion 38 of the stopper 35 axially presses the second tubular packing P2, the inner circumference of the second tubular packing P2 is pressed against the outer circumference of the dissimilar pipe 4, and the second tubular packing P2 is pressed. The sealing property of P2 is improved. Further, as shown in FIG. 1, both sides of the partition wall portion 79 formed on the connecting member 7 have first and second cylindrical packings P1.
, P2 is pressed against the ends of the P2, so the flexible pipe with corrugation 3
The gap at the joint portion is properly sealed by both packings P1 and P2. Therefore, the waterproof function of the joint 2 is improved.

The joint 2 of the present embodiment contributes to the reduction of the number of parts in the storage or transportation of the parts and facilitates the storage or the transportation. That is, in this embodiment, since the connecting member 7 is integrated with the first retainer 5 and the stopper 35 by temporary fixing, the tubular packings P1 and P2 are respectively attached to the first retainer 5 and the connecting member 7. If integrated into one, the parts required for the joint 2 become one part as a whole.

Second Embodiment Next, a joint 2a between a corrugated flexible tube and another tube according to a second embodiment of the present invention will be described with reference to FIGS. The joint 2a of the present embodiment is the same as the first embodiment except that the structure of the second retainer 6a is different. Therefore, the members common to the members shown in FIGS.
The same reference numerals are given and the description thereof is omitted.

As shown in FIG. 16, the second retainer 6a of this embodiment comprises a locking arm ring 85 and a packing pushing tool 86. As shown in FIGS. 14 and 16, a plurality of locking arms 87 (eight in this embodiment) are integrally formed on the locking arm ring 85 at substantially equal intervals in the circumferential direction. A locking claw 88 protruding inward is formed at the tip of the locking arm 87, and a tapered guide surface 89 is formed at the inner circumference of the tip. Guide surfaces 91 (eight in this embodiment) are formed on the side wall portion 90 of the locking arm ring 85 so as to be located between the adjacent locking arms 87. Guide rib 92 on the part
Is provided. The locking arm ring 85 is, for example, P
It is a resin molded product molded from a synthetic resin such as P, PE or ABS.

As shown in FIGS. 15 and 16, the packing pushing tool 86 is adapted to be inserted from the side wall portion 90 side of the locking arm ring 85 and fit into the locking arm ring 85. The flange portion 93 of the packing pressing tool 86 is integrally formed with a tubular projecting portion 94.
A tube fixing arm 96 is formed by equally dividing 4 in the circumferential direction by slits 95.

As shown in FIG. 15, the tube fixing arm 96
A guide surface 97 is formed on the outer peripheral surface of the rear end side,
A convex portion 99 is formed from this guide surface 97 to a tapered surface 98. The inner peripheral surface of the tube fixing arm 96 becomes a tube fixing surface 100, and a groove portion 101 along the axial direction is formed at a position corresponding to the convex portion 99. A packing pressing portion 102 is formed to be inclined at the tip of the cylindrical protruding portion 94.

FIG. 16 shows a second retainer 6a formed by fitting a packing pushing tool 86 to the locking arm ring 85. The guide rib 9 of the side wall portion 90 of the locking arm ring 85
The projection 99 of the tube fixing arm 96 of the packing pressing tool 86 is arranged between the two (see FIG. 14). Also in this embodiment, as in the above-described embodiments, the second retainer 6a is stored and transported in a state in which the second retainer 6a is connected to the connecting member 7 in advance. That is, in the first temporary fixing recess 71 of the connecting member 7,
Locking claw 2 of locking arm 26 formed on first retainer 5
7 is temporarily locked, and the locking claw 88 of the locking arm 87 formed on the locking arm ring 85 is temporarily locked in the second temporary locking recess 72, and the connecting member 7 and the first retainer 5 are connected. It is integrated with the second retainer 6a.

The connection between the corrugated flexible tube 3 and the dissimilar tube 4 using the joint 2a according to this embodiment is performed as follows. The main engagement between the connecting member 7 and the first retainer 5 is the same as that in the above-described embodiment, and the description thereof is omitted.
When the main engagement between the connecting member 7 and the first retainer 5 is completed,
The dissimilar pipe 4 is inserted into the second retainer 6a which is integral with the connecting member 7 until the end of the dissimilar pipe 4 contacts the stopper surface 16 of the second packing P2. At that time, the locking arm 87 of the locking arm ring 85 is stopped by the anti-rotation rib 80. After that, the flange portion 93 of the packing pushing tool 86 is pushed, the locking arm ring 85 is pushed axially into the connecting member 7, and the second insertion cylindrical portion 66 of the connecting member 7 is pushed.
Is pushed into the second insertion groove portion 50 of the second retainer 6a. Then, the locking claw 88 formed at the tip of the locking arm 87 of the second retainer 6 a enters the second locking recess 68 of the connecting member 7 and locks on the edge 70 thereof.

Further, since the packing pressing portion 102 of the tube fixing arm 96 of the packing pressing tool 86 presses the second cylindrical packing P2 from the axial direction, the inner circumference of the second cylindrical packing P2 is different from that of the other tube 4. The second cylindrical packing P2 is pressed against the outer periphery to improve the sealing property.

As shown in FIG. 12, the locking arm ring 8
When 5 is fully engaged with the connecting member 7, the locking arm 87
The position of the side wall portion 90 which is continuously provided in the above is fixed to the connecting member 7. However, since the packing pushing tool 86 is only fitted to the locking arm ring 85, the elastic force of the second tubular packing P2 acts, and the packing pushing tool 86 is directed toward the outer side rather than the rear end side, that is, the side wall portion 90. The force to push it back acts. This force is caused by the convex portion 99 of the packing pressing tool 86 coming into contact with the guide surface 91 of the locking arm ring 85, whereby the tube fixing arm 96 of the packing pressing tool 86.
Is converted into a force that bends the inner side. As a result, the tube fixing arm 96 of the packing pressing tool 86 elastically bends and comes into pressure contact with the outer periphery of the foreign tube 4, so that the foreign tube 4 is firmly fixed by the tube fixing arm 96 of the packing pressing tool 86.

As a result, the first retainer 5 and the second retainer 6a are connected via the connecting member 7 and are prevented from coming off. Therefore, the corrugated flexible tube 3 and the dissimilar tube 4 are
It can be connected in one-touch mode. In this embodiment,
When the first insertion cylinder portion 65 of the connecting member 7 having the tapered inclined surface 77 enters the first insertion groove portion 30 of the first retainer 5, the tapered inclined surface 77 directly compresses the first cylindrical packing P1. To do. As a result, the first tubular packing P1
The inner circumference of the first tubular packing P1 is pressed against the outer circumference of the corrugated flexible tube 3 to enhance the sealing performance of the first tubular packing P1. In addition, the packing pressing portion 102 of the packing pressing tool 86 has the second cylindrical packing P2.
Is pressed in the axial direction, the inner circumference of the second tubular packing P2 is pressed against the outer circumference of the dissimilar pipe 4, and the sealing performance of the second tubular packing P2 is improved.

Further, as shown in FIG. 12, both sides of the partition wall 79 formed on the connecting member 7 are in pressure contact with the ends of the first and second cylindrical packings P1 and P2, so that the corrugated flexible tube 3 The gap between the joint between the and the dissimilar pipe 4 is well sealed by both packings P1 and P2. Therefore, the waterproof function of the joint is improved.

In the joint 2a of this embodiment, the joint 2 described above is used.
Similarly, in terms of storage or transportation of parts, it contributes to reduction of the number of parts and facilitates storage or transportation. That is,
In the present embodiment, the first retainer 5 and the locking arm ring 85
Since the connecting member 7 is integrated by temporary fixing with respect to and, if the tubular packings P1 and P2 are integrated with the first retainer 5 and the connecting member 7, respectively, the joint 2a
The component required for is one component as a whole.

The portion of the second inserting cylinder portion 66 of the connecting member 7 to which the second cylindrical packing P2 is attached is directly attached to the outer periphery of the second cylindrical packing P2, like the first inserting cylinder portion 65. Alternatively, a taper surface may be used to press the second tubular packing P2 to the radially inner peripheral side. With this configuration,
The inner periphery of the second tubular packing P2 is also pressed against the outer periphery of the dissimilar pipe 4 by the second insertion tubular portion 66.
The sealing property of the tubular packing P2 is further improved.

Third Embodiment Next, with reference to FIG. 17, a joint 2b between other pipes (tubes) 4 according to a third embodiment of the present invention will be described. The joint 2b of the present embodiment is different from the first embodiment in the structure of the connecting member 7a, and the second retainer 6 of the first embodiment is connected to both sides of the connecting member 7a. Since they are the same except that they are configured as described above, the same members as those shown in FIGS. 1 to 11 are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, the second insertion tube portions 66 are formed on both sides of the connecting member 7a so as to be symmetrical with each other in FIG. The second retainer 6 described in the first embodiment is detachably engaged with each of the second insertion cylinder portions 66, so that the other tubes 4 can be connected to each other in a one-touch type and in a watertight state.

Fourth Embodiment FIG. 18 shows a joint 2c according to the fourth embodiment. The joint 2c of this embodiment includes a flexible tube with a spiral wave and a flexible tube with a parallel wave 3A.
It is a joint 2c for waterproof connection between and. This joint 2c is different from the joint 2a of the second embodiment shown in FIG. 12 only in the structure of the packing pushing tool 86a of the second retainer 6b, and therefore the same parts are designated by the same reference numerals, and the description thereof will be omitted. Omit some.

In the joint 2c of this embodiment, as shown in FIGS. 18 and 19, the pipe fixing surface 1 of the packing pushing tool 86a is fixed.
00, a locking claw 103 is formed. This locking claw 10
3 is adapted to elastically engage between parallel peaks (in the valley) of the pipe 3A. When inserting the flexible tube 3A with parallel wave into the stopper surface 16 of the second packing P2 until it abuts,
Protrusion (claw) 1 on the tube fixing surface 100 of the packing pushing tool 86a
In order to allow 03 to escape slightly upward, a slight gap is provided between the guide surface 91 of the side wall portion 90 of the locking arm ring 85 and the guide surface 97 of the tube fixing arm 96 to reduce the insertion resistance applied to the protrusion 103. When it is inserted, by pushing the flange portion 93 of the second retainer 6b, the projection 103 of the pipe fixing surface 100 becomes slightly free, and the mountain portion of the corrugated flexible tube 3A is overcome by the bending of the pipe fixing arm 96, and In the state in which the packing P2 is pressed from the axial direction by the packing pressing portion 102 of the projecting portion 94 and the inner circumference 15 of the packing P2 is pressed against the peak portion of the corrugated flexible tube 3A, the second retainer 6b is connected Is fully locked in the locking recess 68 of
While the side wall 90 of the locking ring 85 is fixed, the packing pusher 86a is not fixed, so that the cylindrical protrusion 94 of the packing pusher 86a is moved outward by the reaction force of the packing P2. The tapered surface 98 of the convex portion 99 of the pipe fixing arm 96 moves along the guide surface 91 of the side wall portion 90, and as a result, the pipe fixing arm 96 is pushed downward, causing the pipe fixing surface 100 to wave. By pressing the peaks of the flexible tube 3A with protrusions and the troughs of the projections 103, the flexible tube 3A with corrugations can be fixed and prevented from coming off. Therefore, a joint that waterproofly connects the spiral corrugated flexible tube 3 and the parallel corrugated flexible tube 3A is obtained.

Fifth Embodiment FIG. 20 is a joint in which the flexible pipes 3A with parallel corrugations are waterproofly connected to each other, and the second insertion cylinder 66 of the connecting member 7 has a partition wall 79 formed symmetrically. It is a joint structure in which the second retainers 6b shown in FIG. As the packing pushing tool 86a, the one shown in FIG. 19 is used. The other structure is the same as that of the fourth embodiment shown in FIGS.

Sixth Embodiment FIG. 20 shows a joint according to the sixth embodiment. The joint of this embodiment is different from that of the first embodiment in that the other pipe is a flexible pipe 3A with parallel wave and the second retainer 6c.
The point is that a projection (locking claw) 103 that engages with the valley of the pipe 4 is provided on the inner surface of the pipe fixing portion 40 of the stopper 35a.
Since other configurations are the same as those in the first embodiment, common members are designated by the same reference numerals, and description thereof will be omitted.

Also with the joint of this embodiment, the spiral corrugated flexible tube 3 and the parallel corrugated flexible tube 3A can be waterproofly connected.

[0078]

As described above, according to the present invention, the retainer is mounted at a fixed position on the end of the corrugated flexible tube to be connected, and the stopper is attached to the end of the other tube to be connected. Just attach the chuck, packing, or packing pusher and locking arm ring in place, and then insert the connecting member into the retainer.
The corrugated flexible tube can be easily connected to another tube with good sealing property. Further, other pipes can be similarly connected. Therefore, the efficiency of construction can be improved.

Further, in the present invention in which the tip of the packing pressing portion is formed with an inclined pressing surface whose outer side in the radial direction protrudes with respect to the inner side, the packing is pressed by the tip of the packing pressing portion in the axial direction. Is pushed inward in the radial direction, and the packing adheres to the inner circumference of the other pipe, further improving the watertightness.

Further, in the present invention in which ribs are provided on the outer circumference of the connecting member so that the stopper or the locking arm ring does not rotate with respect to the connecting member, the stopper or the locking arm ring is inserted and the chuck is attached. The tightening work can be easily performed. Further, in the present invention in which the second insertion tubular portion of the connecting member is directly in pressure contact with the outer periphery of the second tubular packing to compress the second tubular packing radially inwardly,
The sealing property of the second tubular packing is further improved.

Further, the present invention in which the temporary fixing recess is formed in the connecting member has a great practical effect of facilitating storage or transportation of the joint.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view showing a state in which a joint between a corrugated flexible tube and another tube according to a first embodiment of the present invention is permanently connected.

FIG. 2 is a partial cross-sectional front view showing a state in which the joint between the corrugated flexible tube and another tube according to the first embodiment of the present invention is temporarily joined.

3 (A) and 3 (B) are a partial cross-sectional front view and a side view of a first tubular packing used in the same embodiment.

4 (A) and 4 (B) are a partial cross-sectional front view and a side view of a second tubular packing used in the same embodiment.

5 (A) and 5 (B) are a partial cross-sectional front view and side view of a retainer used in the same embodiment.

6 (A) and 6 (B) are a partial sectional front view and a side view showing a state in which a first tubular packing is attached to a retainer.

7 (A), (B), and (C) are a partial sectional front view and both side views of a stopper used in the same embodiment.

8A and 8B are a partial cross-sectional front view and a side view of a chuck used in the same embodiment.

9 (A), (B), and (C) are a partial cross-sectional front view and side views of a second retainer configured by fastening a chuck to a stopper.

10 (A) and 10 (B) are a partial cross-sectional front view and a side view of a connecting member used in the same embodiment.

11 (A) and 11 (B) are a partial cross-sectional front view and a side view showing a state in which a second tubular packing is attached to the connecting member.

FIG. 12 is a partially sectional front view showing a state in which a joint between a corrugated flexible tube according to a second embodiment of the present invention and another tube is permanently connected.

FIG. 13 is a partial sectional front view showing a state in which a joint between a corrugated flexible tube and another tube according to the second embodiment of the present invention is temporarily joined.

14 (A) and 14 (B) are a partial sectional front view and a side view of a locking arm ring used in the same embodiment.

15 (A) and 15 (B) are a partial sectional front view and a side view of a packing pushing tool used in the same embodiment.

16 (A) and 16 (B) are a partial cross-sectional front view and both side views of a second retainer configured by fitting a packing pushing tool into a locking arm ring.

FIG. 17 is a front view, partially in section, showing a state in which a joint between straight pipes according to a third embodiment of the present invention is permanently joined.

FIG. 18 is a partial cross-sectional view showing a joint between a spiral corrugated flexible tube and a parallel corrugated flexible tube according to a fourth embodiment of the present invention.

19 (A) and 19 (B) are a partial sectional view and a side view of a packing pushing tool used in the same embodiment.

FIG. 20 is a partial cross-sectional view showing a joint of parallel-shaped corrugated flexible tubes according to a fifth embodiment of the present invention.

FIG. 21 is a partial cross-sectional view showing a joint between a spiral corrugated flexible tube and a parallel corrugated flexible tube according to a sixth embodiment of the present invention.

[Explanation of Codes] 2, 2a, 2b, 2c, 2d, 2e ... Joint 3 ... Flexible tube with spiral wave 3A ... Flexible tube with parallel wave (other tube) 4 ... Other tube (different tube or Also referred to as a straight pipe. Locking claw 30 ... First insertion groove 35, 35a ... Stopper 36 ... Chuck 38, 102 ... Packing pressing part 40 ... Tapered flexible plate (tube fixing part) 46, 88 ... Second locking claw 50 ... Second insertion Groove 55 ... Chuck inner cylinder (cylinder) 65 ... First insertion cylinder 66 ... Second insertion cylinder 67 ... First locking recess 68 ... Second locking recess 71 ... First temporary locking recess 72 ... 2nd temporary fixing recessed part 79 ... Partition part 80 ... Rotation prevention rib (rib) 85 ... Locking arm ring 86, 86a ... Packing pusher 91 ... Guide surface 96 ... Pipe fixing arm 99 ... Convex portion P1 ... First tubular packing P2 ... Second tubular packing

Claims (12)

[Claims] 1. A tubular packing (P2) having elasticity and attached to the outer circumference of an end of a pipe (3A, 4), and a packing pressing portion (38, 38) for axially pressing the tubular packing (P2). 102) is formed, and can be fixed to the outer circumference of the pipe by elastically bending radially toward the pipe (3A, 4).
Retainer (6, 6a, 6b, 6c) with 0, 96)
And a connecting member (7, 7) that accommodates the tubular packing (P2) on the inner peripheral side and is detachably connected to the retainer.
a, 7b). 2. The joint according to claim 1, wherein a tip end surface of the packing pressing portion (38, 102) is an inclined surface whose outer side in the radial direction projects toward the inner side. 3. The retainer (6, 6c) is provided with a packing pressing portion (38) for axially pressing the cylindrical packing (P2), and is radially directed toward the pipe (4). Pipe fixing part (40) capable of elastically bending
And a stopper (35, 35a) that is formed on the pipe fixing portion (40) of the stopper (35, 35a), while being fixedly attached to the stopper (35, 35a). A chuck (36) having a cylindrical portion (55) that is in contact with the pipe fixing portion (40) and bends the pipe fixing portion (40) toward the inner peripheral side to fix the pipe (4).
The fitting described in. 4. A locking claw (46) formed on the outer circumference of the stopper (35) forming a part of the retainer (6) is provided on the outer circumference of the connecting member (7, 7a, 7b). 4. A locking recess (68) for detachably locking is formed.
The fitting described in. 5. The connecting member (7, 7a, 7b) includes:
The joint according to claim 3 or 4, wherein a rib (80) is provided to prevent rotation of the stopper (35) with respect to the connecting member (7). 6. The retainer (6a, 6b) is provided with a packing pressing portion (102) for axially pressing the tubular packing (P2), and is radially directed toward the pipe (4). A packing pusher (86, 86) formed with an elastically bendable tube fixing arm (96).
a) and the packing pushing tool (86, 86a) are attached so as to be relatively movable along the axial direction, and the convex portion (9) formed on the outer peripheral surface of the packing pushing tool (86, 86a) is attached.
9) and a locking arm ring (85) having a guide surface (91) for fixing the pipe (4) by bending the pipe fixing arm (96) inwardly. Item 1
Or the joint according to 2. 7. A locking member for removably locking a locking claw (88) formed on the outer circumference of the locking arm ring (85) on the outer circumference of the connecting member (7, 7a, 7b). Recess (6
The joint according to claim 6, wherein 8) is formed. 8. A rib (80) on the outer circumference of the connecting member (7, 7a, 7b) for preventing rotation of the locking arm ring (85) with respect to the connecting member (7, 7a, 7b).
The joint according to claim 7, wherein the joint is provided. 9. An insertion cylinder portion (66) formed on the connecting member (7, 7a, 7b) comprises a cylindrical packing (P2).
9. The joint according to claim 1, wherein the cylindrical packing (P2) is directly pressed against the outer periphery of the to compress the tubular packing (P2) toward the radially inner side. 10. The locking claw (4) is provided on the outer periphery of the connecting member (7, 7a, 7b) in addition to the locking recess (68).
6, 88) is a detachable locking recess (72)
The joint according to claim 9, wherein is formed on the tip side of the insertion tubular portion (66) with respect to the locking recess (68). 11. A first cylindrical packing (P1) having elasticity which is mounted on the outer circumference of the end of the corrugated flexible tube (3) to be connected.
), A second cylindrical packing (P2) having elasticity to be attached to the outer circumference of the ends of the other tubes (3A, 4), and a fitting section (21) for the outer circumference of the corrugated flexible tube (3). ) Is formed, and a packing pressing portion (38) for axially pressing the second tubular packing (P2) is formed, and the retainer (5) faces the other pipe (4). Stoppers (35, 35a) formed with a pipe fixing portion (40) capable of elastically bending in the radial direction.
And is attached to the stoppers (35, 35a) so as to be able to be tightened, and is in contact with the pipe fixing portion (40) of the stoppers (35, 35a) so that the pipe fixing portion (40) has an inner circumference. A chuck (36) formed with a tubular portion (55) that is bent to the side to fix the other tubes (3A, 4), and formed on the outer peripheral side of the packing holding portion (22) of the retainer (5). The first cylindrical packing (P1), which is inserted into the formed first insertion groove (30) to compress the first cylindrical packing (P1) to the radially inner side.
The insertion tube portion (65), the second insertion tube portion (66) inserted into the second insertion groove (50) formed on the outer peripheral side of the pipe fixing portion (40) of the stopper (35), and the First and second
And a connecting member (7) in which partition walls (79) that are in pressure contact with the ends of the tubular packings (P1, P2) are formed. The retainer (5) ) The first locking claw (27) formed on the outer periphery of the first locking claw (27) is detachably locked, and the second locking claw formed on the outer periphery of the stopper (35). A joint formed with a second locking recess (68) in which (46) is detachably locked. 12. A first cylindrical packing (P1) having elasticity which is mounted on the outer circumference of the end of the corrugated flexible tube (3) to be connected.
), A second cylindrical packing (P2) having elasticity to be attached to the outer circumference of the ends of the other tubes (3A, 4), and a fitting section (21) for the outer circumference of the corrugated flexible tube (3). ) Is formed, and a packing pressing portion (102) that presses the second tubular packing (P2) in the axial direction is formed, and the other pipes (3A, 4) are provided. A packing pusher (86, 86a) formed with a tube fixing arm (96) capable of elastically bending in the radial direction, and the packing pusher (86, 86a) extending in the axial direction. The protrusion (9) is attached so as to be relatively movable and is formed on the outer peripheral surface of the packing pushing tool (86, 86a).
A guide surface (91) that abuts against the tube (9) and bends the tube fixing arm (96) toward the inner peripheral side to fix the other tube (3A, 4).
The locking arm ring (85) formed with and the first tubular shape inserted into the first insertion groove (30) formed on the outer peripheral side of the packing holding portion (22) of the retainer (5). First to compress the packing (P1) radially inward
Inserting cylinder part (65), the packing pushing tool (86, 86)
The second insertion cylinder part (6) to be inserted into the second insertion groove (50) formed on the outer peripheral side of the pipe fixing arm (96) in a).
6) and a connecting member (7) in which partition walls (79) that are in pressure contact with the ends of the first and second tubular packings (P1, P2) are formed, respectively, the connecting member (7) A first locking recess (67) for removably locking the first locking claw (27) formed on the outer circumference of the retainer (5), and the locking arm ring (85) on the outer circumference of A second locking claw (88) formed on the outer periphery of the joint is formed with a second locking recess (68) for detachably locking.