JPH0348476Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pipe joint, particularly a hose having a resin pipe joint.

[Prior Art] Recently, hoses with resin pipe joints have been provided. In a resin pipe joint, the male threaded portion and the threaded portion can be integrally formed during molding, which is advantageous in simplifying the manufacturing process. However,
Because the base is elastic, it is often bent during use. When the hose is used in this curved state for a long period of time, concentrated bending stress is applied to the hose insertion part of the resin pipe joint due to fluid pulsation, which may cause the insertion part to break. . If it breaks, the resin pipe joint and the hose will separate, causing the hose to bounce around while splattering fluid, potentially causing serious damage to the surrounding area.

[Problems to be solved by the invention] The invention was made to solve the above-mentioned problems, and its purpose is to prevent the separation of the pipe fitting from the hose even if the pipe fitting breaks. It is an object of the present invention to provide a hose having a pipe joint that can prevent such problems as much as possible.

[Means for Solving the Problems] A hose with a pipe joint according to the present invention includes a hose having a protrusion protruding radially outward at the distal end, a central through hole, and an outer circumferential surface. a base portion having a first locking portion on the base portion; and an insertion portion inserted into the hose hole having a central through hole that is inserted into one end side of the central through hole of the base portion in a manner that prevents it from coming off and communicates with the central through hole. and a threaded portion provided on the other end side of the base and having one of a male threaded portion and a female threaded portion.
a tube connecting member; one end covers the outer circumferential surface of the base and the other end covers the outer circumferential surface of the hose into which the insertion portion is inserted; a first semi-cylindrical portion having a semicircular cross section and a second locking portion that locks with a part of the first locking portion of the base; and an inner circumference integrally connected to the first half-cylindrical portion by a hinge portion the first of the base on the surface
a second semi-cylindrical portion having a semicircular cross section and a second locking portion that locks with a part of the locking portion;
an engaging portion formed in at least one of the first half-cylindrical portion and the second half-cylindrical portion;
The hose is characterized by comprising: an inner abutment part that the protrusion of the hose comes into contact with to prevent the hose from coming off; and a resin protection tube.

The protrusion formed on the hose can be formed, for example, by fixing a separate piece to the hose.

As shown in the embodiments described later, generally, the threaded portion of the second pipe connecting member is removably screwed into the thread of the first pipe connecting member. The hinge portion of the protection tube is a so-called self-hinge portion made of resin.

As shown in the embodiments described later, the engaging part includes an engaging pawl formed at the end of the first half-cylindrical part and located on the opposite side of the hinge part in the cross section, and an engaging claw located on the opposite side of the hinge part in the cross section. and an engagement pawl receiving portion formed at the end of the second semi-cylindrical portion and engaged with the engagement pawl.

[Function] A method of using the pipe joint according to the present invention will be explained. First, from a state where the first pipe connecting member is covered with the first half-tube and the second half-tube connected by a hinge, the first half-tube and the second half-tube are closed at the engaging part, This makes the resin protective tube a cylindrical body.

As shown in the embodiments described below, the engaging part includes an engaging pawl formed at the end of the first half-cylindrical part and located on the opposite side of the hinge part in the cross section, and an engaging claw located on the opposite side of the hinge part in the cross section. an engaging pawl receiving part that is located at the end of the second half-cylindrical part and is engaged with the engaging pawl, the engaging pawl and the engaging pawl receiving part are The first half-cylindrical portion and the second half-cylindrical portion are engaged with each other to close the resin protective tube to form a cylindrical body.

In the above state, even if the hose and the first pipe connecting member are pulled apart, the protrusion provided at the distal end of the hose and the resin protective tube The inner abutting portion of As a result of this contact, the hose and the first pipe connecting member do not separate as long as the resin protective tube is closed.

By the way, the first half cylinder part and the second half cylinder part constituting the resin protection tube are not formed into a cylindrical body by a combination of a hinge part and an engaging part, but are completely separable as separate bodies ( It is also conceivable that the first half cylinder part and the second half cylinder part (which are not connected by a hinge part) are formed into a cylindrical body by two engaging parts. However, in this case, since the first half cylinder part and the second half cylinder part, which can be separated from each other as separate bodies, are formed into a cylindrical body by two engaging parts, the second half cylinder part, which can be separated from each other as separate bodies, The first half cylinder part and the second half cylinder part tend to shift relative to each other in the axial direction.
There is a problem in that the engaging portion that engages the half-cylindrical portion and the second half-cylindrical portion is likely to come off.

In this regard, in the present invention, since the first half cylinder part and the second half cylinder part which constitute the resin protection tube are integrally connected at the hinge part, the first half cylinder part which constitutes the resin protection tube And the second half-cylindrical portion cannot be moved relative to each other in the axial direction. Even if it moves, the first half cylinder part and the second half cylinder part connected to each other at the hinge part
The half-cylindrical portions only move together. Therefore, this is effective in preventing the engagement portion from disengaging and further preventing the resin protective tube from opening.

If the resin protective tube is made into a cylindrical body as shown above,
The second locking part of the resin-coated protective tube, which is composed of a first half-tube part and a second half-tube part,
It is locked in the locking part. When the first locking part and the second locking part are locked in this way, the resin protection tube consisting of the first half cylinder part and the second half cylinder part is prevented from coming off from the first pipe connection member. be done.

If the pipe joint according to the present invention is used in such conditions, the hose will be used in a curved state for a long period of time, and the pulsation of the hose due to pressurization and depressurization of the fluid will concentrate on the insertion part. Due to bending stress, etc.
Even if it breaks at this insertion part, the protruding part of the distal end of the hose that protrudes radially outward and the inner abutting part of the resin protection tube will contact each other, and the first pipe will be connected. Separation of the member and hose is suppressed as much as possible.

[Effect of the invention] As mentioned above, in the hose with the pipe joint according to the invention, even if the resin insertion part breaks, the tip of the hose protrudes radially outward. The protruding portion and the inner abutting portion of the resin protective tube abut each other, thereby restricting separation of the first tube connecting member and the hose.

[Example] A first example of the present invention is shown in FIGS. 1 to 15.

(Configuration of Example) In this example, a second pipe connecting member 1 made of reinforced nylon resin containing glass fiber or the like or reinforced polyacetal resin containing glass fiber or the like,
Reinforced nylon resin containing glass fiber, etc., or reinforced polyaceter containing glass fiber, etc.
The first tube connecting member 2 is made of resin, a protective tube 8 made of resin covers the first tube connecting member 2 and prevents such misfortune, and a hose 9 is made of rubber.

First, the second tube connecting member 1 connected to the first tube connecting member 2 will be explained.

The second pipe connecting member 1, as shown in FIG.
It has a nipple shape with a central through hole 12 and a nut portion 14 for fluid passage. A tapered thread 10 is formed on the outer periphery of one end 1a of the second pipe connecting member 1. As shown in FIG. Although not shown, one pipe is screwed and connected to the tapered screw 10. 10th
As shown in the figure, on the outer periphery of the second pipe connecting member 1 on the other end 1b side, there is a male threaded portion 13 that is a parallel pipe thread.
is formed. Further, a key is provided on the outer circumference of the second pipe connecting member 1 on the other end 1b side, as shown in No. 10.
15 is formed parallel to the axial direction.

As shown in FIG. 10, a claw 16 is integrally provided on the outer periphery of one end of the second pipe connecting member 1. As shown in FIG. The claws 16 are made of reinforced nylon resin or reinforced polyacetal resin and are therefore hard. This second
A separate ring member 3 made of nylon resin or polypropylene resin is attached to the pipe connecting member 1,
A coil spring 4 is attached. Ring member 3
has an annular shape as shown in FIGS. 10 to 12. On the side surface 33 of the ring member 3, two claws 30 are formed in series in the circumferential direction at equal intervals, that is, at intervals of 180 degrees. This claw portion 30 has a vertical surface 31 that is substantially parallel to the axial direction of the ring member 3, and an inclined surface 32 whose axial dimension gradually decreases from the tip of the vertical surface 31.
It is formed by and. Furthermore, a claw 38 is integrally provided on the inner peripheral portion of the ring member 3 to protrude. Claw 38
Because it is made of nylon resin or polypropylene resin, it can be bent and deformed to some extent. Two key grooves 34 are formed in the inner peripheral portion of the ring member 3 so as to face each other.

Then, push the separate ring member 3 in the axial direction from the male threaded portion 13 side of the second pipe connecting member 1, and
4 and the key 15 are fitted into each other, the ring member 3 is attached to the first pipe connecting member 1 in a non-rotating state. When the ring member 3 is pushed into the second pipe connecting member 1 in this manner, the claw 38 hits the claw 16, and then the claw 38 is deflected and deformed and passes over the claw 16, and the claw 38 is restored to its original state again. Therefore, as shown in Figure 10, the claw 16 and the claw 3
8 is a so-called stuck state, and it is locked and cannot be released. Therefore, the ring member 3 does not come off from the second pipe connecting member 1. Here, if the keyway 34 is moved along the key 15, the ring member 3 remains in the non-rotating state.
It can move along the axial direction of the second pipe connecting member 1.

The coil spring 4 is interposed between the nut portion 14 of the second pipe connecting member 1 and the ring member 3. The coil spring 4 biases the ring member 3 in the axial direction toward the other end 1b of the second pipe connecting member 1 by its elastic force.

Next, the first pipe connecting member 2 will also be explained.
As shown in FIGS. 13 to 15, the first pipe connecting member 2 includes a base 20 having a central through hole 20a and a ring groove-shaped first locking portion 200, and a central through hole 20a of the base 20. It consists of a cylindrical insertion part 21 which is inserted into one end side of the inner part and has a central through hole 21a.

As shown in FIG. 10, a convex portion 210 of the insertion portion 21
By hitting the convex portion 200a of the base 20,
The insertion portion 21 is prevented from coming off in the direction opposite to the arrow A with respect to the base portion 20. Further, by the projection 91a of the hose 9 coming into contact with the inner abutting portion 85 of the resin protection tube 8, the insertion portion 21 is prevented from coming off from the resin protection tube 8. Insertion part 21
is inserted into the hose hole 90 of the hose 9, as shown in FIG. As shown in FIG. 15, a female threaded portion 23 is formed on the inner peripheral portion of the other end side of the base portion 20 of the first tube connecting member 2. As shown in FIG. This female threaded portion 23 is threadedly engaged with the male threaded portion 13 of the first pipe connecting member 1, as shown in FIG. Also base 2
0, as shown in FIGS. 13 and 14, the claw portion 2
Eight pieces 2 are formed at equal intervals in the circumferential direction, that is, at intervals of 45 degrees. This claw portion 22 is connected to the ring member 3
It corresponds to the claw portion 30 of , and is formed of a vertical surface 220 parallel to the axial direction and an inclined surface 221.

In FIG. 10, reference numeral 6 denotes an elastic sealing member, which has a recess 16a on the other end 1b side of the second pipe connecting member 1.
is attached to. As a result, the elastic seal member 6 can come into contact with the end surface 21c of the insertion portion 21. This elastic seal member 6 has an O-ring shape and is made of hot-flow rubber.

Next, the hose 9 will be explained. At the tip of the hose 9, there is a metal sleeve 91 as shown in Fig. 5.
It is tightened. A protrusion 91a is formed on the sleeve 91. Therefore, the hose 9 has a protrusion 91a. When crimping the sleeve 91, as shown in FIG.
The inner plate portion of the sleeve 91 is coupled to the groove 21c of the insertion portion 21 by applying an external force in the direction of arrow F to the outer peripheral portion of one end. At this time, a depression 91c is formed. Then, the distal end of the hose 9 is inserted into the space between the insertion portion 21 and the sleeve 91. After inserting, the 9th
As shown in the figure, press the outer periphery of the sleeve 91 inward with the pressing die 93, and press the sleeve 91 and the insertion tool 2.
Clamp the tip of the hose 9 with 1 and crimped. In this way, the protrusion 91 can be attached to the sleeve 91.
a is formed. Note that the protrusion 91a extends in the circumferential direction of the sleeve 91.

Now, the resin protection tube 8 that characterizes this embodiment will be explained with reference to FIGS. 1 to 6.

As shown in FIG. 5, the resin protective tube 8 has one end 8a that covers the outer circumferential surface of one end of the base 20, and the other end 8b that is formed at the insertion portion 21 and the tip of the hose 9 and has a protrusion. It covers the outer peripheral surface of 91a, and is formed into a cylindrical shape with an outer diameter of about 25 mm as a whole.

As shown in FIG. 5, this resin protection tube 8 has a second locking portion 800 on its inner circumferential surface that locks with a part of the first locking portion 200 of the base portion 20, as shown in FIG. As shown in FIG.
A second half cylinder having a semicircular cross section, which is integrally connected to the half cylinder part 80 by a hinge part 82 and has a second locking part 800 on the inner peripheral surface that locks with a part of the first locking part 200 of the base part 20. 81, and an engagement claw 810 and an engagement receiving portion 820 as an engagement portion.

Here, as shown in FIG. 3, the diameter r of the hinge portion 82 is 1.3 mm, the thickness t is 0.4 mm, and the width H is 2.5 mm.

As shown in FIG. 2, the engaging claw 810
It is located on the opposite side of the hinge part 82 in the half-cylindrical part 81 in the cross section.

The engagement pawl receiving portion 820 has the hinge portion 82 in a cross section.
It is formed on the outer peripheral side of the end of the first half-cylindrical part 80, located on the opposite side.

When the engaging claw 810 and the engaging claw receiving portion 820 engage with each other, the first half-cylindrical portion 80 and the second half-cylindrical portion 8
Both ends in the cross-sectional direction of the first half-cylindrical portion 80 and the hinge portion 82 are maintained in a cylindrical shape.

The first half-cylindrical portion 80 and the second half-cylindrical portion 81 of the resin protective tube 8 described above have an inner contact portion 85 on the inner circumferential side.
is formed.

(Operation of the embodiment) A method of using the hose having a pipe joint according to the present embodiment will be explained. First, the central through hole 20a of the base 20
Insert the insertion part 21 into the hose 9 and
The insertion portion 21 is inserted into the hole 90. Next, from the open state of the first half-cylindrical part 80 and the second half-cylindrical part 81 as shown in FIG. be close to each other. As a result, the engaging claw 810 and the engaging claw receiving portion 820 are engaged with each other, and the first half-cylindrical portion 80 and the second half-cylindrical portion 81 are closed to form a cylindrical body. In this way, the first locking portion 20 of the first pipe connecting member 2
0, the second locking portion 800 of the resin protection tube 8 is locked. As a result, the resin protective tube 8 is attached to the first tube connecting member 2. In this attached state, the resin protective tube 8 does not come off from the first tube connecting member 2.

In this mounted state, as shown in FIG. 5, the protrusion 91a of the sleeve 91 and the inner abutment part 85 of the resin protective tube 8 are opposed to each other.

Next, with fingers, a spanner, or the like, the male threaded portion 13 of the second tube connecting member 1 and the female threaded portion 23 of the second tube connecting member 2 are turned in the tightening direction to screw them together.
Then, the inclined surface 32 of the claw portion 30 of the ring member 3 and the second
The inclined surface 221 of the claw portion 22 of the tube connecting member 2 comes into contact with it. After the inclined surfaces 32 and 221 touch each other in this way, if the screwing is continued in the tightening direction,
The ring member 3 is pressed against the inclined surface 221 by the so-called "wedge principle" and moves in the direction of arrow A shown in FIG. 10 while resisting the elastic force of the coil spring 4. Therefore, the screwing between the second pipe connecting member 2 and the first pipe connecting member 1 progresses. As the screwing progresses in this manner, as is clear from FIG.
The end face 21c of the elastic seal member 6 comes into contact with the elastic seal member 6.
When the end surface 21c of the insertion portion 21 and the elastic seal member 6 come into contact with each other, the resistance when turning in the screw tightening direction increases rapidly. After the resistance suddenly increases in this way, turn the base 20 of the first pipe connecting member 2 in the screw tightening direction so that the claw portion 22 advances a predetermined pitch, for example, 4 to 6 pitches. The connection between the pipe connecting member 1 and the second pipe connecting member 2 is completed.

In this completed state, the elastic seal member 6 is pressed by the end surface 21c of the insertion portion 21 and is appropriately elastically deformed, so that the base 20 of the second pipe connection member 2 and the first pipe connection member 1 Good sealing performance can be ensured between the two.

Incidentally, even when the pipe joint according to the above embodiment is used in a place where screws are likely to loosen due to vibrations, shocks, etc., the ring member 3 biased by the elastic force of the coil spring 4 The claw portion 30 of
Since it is locked to the claw portion 22 of the base 20 of the pipe connecting member 2, the screw does not loosen. That is, when the first pipe connecting member 2 and the second pipe connecting member 1 try to turn in the direction in which the screws loosen, the vertical surface 31 of the claw portion 30 of the ring member 3 and
Since the vertical surface 220 of the claw portion 22 of the base 20 of the second tube connecting member 2 locks with each other, the first tube connecting member 2 cannot rotate in the direction of loosening the screw.

On the other hand, when removing and separating the first pipe connecting member 2 and the second pipe connecting member 1, the ring member 3 is moved toward the nut part 14 while resisting the coil spring 4, that is, as shown in the arrow shown in FIG. The ring member 3 is moved in the A direction, thereby releasing the engagement between the claw portion 30 of the ring member 3 and the claw portion 22 of the base portion 20 of the second pipe connecting member 2. In that state, the first pipe connecting member 2 and the second pipe connecting member 1
At least one of the screws is turned in the unscrewing direction to completely unthread the male threaded portion 13 of the second pipe connecting member 1 and the female threaded portion 23 of the first pipe connecting member 2.
The pipe connecting member 2 and the second pipe connecting member 1 are separated.

(Effects of the Embodiment) During use, the hose 9 is often used in a bent state due to its elasticity. When the hose 9 is used in a curved state for a long period of time, concentrated bending stress is applied to the insertion portion 21 due to the pulsation of the hose due to fluid pressurization and depressurization, and the resin insert The portion 21 may break in the middle. At this time, in this embodiment, one end 8a of the resin protective tube 8 is
The first locking part 200 of the first tube connecting member 2 and the other end 8b of the protective tube 8 cover the hose 9 that covers the insertion part 21. Moreover, as shown in FIG. 5, the sleeve 9
1 and the inner contact portion 8 of the resin protective tube 8
It is opposite to 5. Therefore, even if the insertion portion 21 is broken in the middle, the protrusion 91a of the sleeve 91 and the inner contact portion 85 of the resin protection tube 8 contact each other, and this contact causes the first tube to Since the connection member 2 and the hose 9 can be prevented from being completely separated, the hose 9 can be prevented from bouncing around while scattering fluid, and secondary disasters can be minimized.

In this embodiment, the first
The half cylinder part 80 and the second half cylinder part 81 are connected to the hinge part 8
2, the first half-tube 80 and the second half-tube 8 constituting the resin protective tube 8
1 is an engagement claw 810 and an engagement claw 82 as shown in FIG.
In the mounted state in which the two parts are engaged with each other, relative movement in the axial direction (in the direction of arrow X in FIG. 6) is not possible. Even if they do move, it is not a relative movement, but only that the first half-cylindrical portion 80 and the second half-cylindrical portion 81 move integrally in the same direction in the axial direction.
That is, the engagement claw 810 and the engagement claw receiving portion 820 move integrally in the same direction in the axial direction. Therefore, it is effective in preventing the cylindrical body of the resin protective tube 8 from coming off.

In other words, as in this embodiment, the first half-cylindrical portion 80
The second half-cylindrical part 81 is not made into a cylindrical body by the combination of the hinge part 82, the engaging claw 810, and the engaging claw receiving part 820, but instead of the hinge part 82, Another set of engaging claws and engaging claw receiving portions are provided at the position of the hinge portion 82, and another set of engaging claws and engaging claw receiving portions are provided at the position of the hinge portion 82, and the engaging claws 810 and the engaging claw receiving portion 820. Therefore, it is also conceivable that the first half-cylindrical part 80 and the second half-cylindrical part 81 are made into cylindrical bodies. However, in this case, since there is no hinge part connecting the two, the first half cylinder part 8 is separable.
0 and the second half-cylindrical portion 81 may move relative to each other in the axial direction due to bending of the hose or the like. In other words, if there is no hinge part 82, the first half-tube part 80 will move in one direction along the axial direction, and there is a risk that the second half-tube part 81 will move in the opposite direction along the axial direction. be. In this way, the first half cylinder part 80 and the second half cylinder part 8
1 moves relative to each other in the axial direction, the engagement between the other set of engagement claws and the engagement claw receiving portion is likely to be released, and similarly, the engagement claw 810 and the engagement claw receiving portion 8 are easily disengaged.
20 and engagement is easily released. When released, the original function of the protective tube 8, which is the effect of suppressing complete separation between the first tube connecting member 2 and the hose 9, is lost.

Furthermore, in this embodiment, as described above, it is possible to effectively suppress screw loosening between the male threaded portion 13 of the second pipe connecting member 1 and the female threaded portion 23 of the first pipe connecting member 2.

In the present embodiment, the claw 38 and the claw 16 can be locked in a so-called locked state by a simple operation of pushing the separate ring member 3 from the male threaded portion 13 side of the first pipe connecting member 1. can. Therefore, even before the male threaded portion 13 and the female threaded portion 23 are screwed together, the ring member 3 can be prevented from coming off from the first pipe connecting member 1.

Further, in this embodiment, after the screwing resistance in the screw tightening direction increases rapidly, if the claw portion 22 is turned in the screw tightening direction so as to advance by a predetermined pitch, the male thread portion 13 and the female thread portion 23 can be separated. The tightening strength of is always a nearly constant value. Therefore, both under-tightening and over-tightening can be effectively prevented. Therefore, it is possible to effectively prevent fluid leakage due to insufficient tightening and damage to the resin pipe joint due to excessive tightening.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention,
FIG. 1 is a side view of the resin protection tube of this embodiment in an open state, FIG. 2 is a side view of the resin protection tube in an open state, and FIG. 3 is a front view of the hinge part in an open state. FIG. 4 is a front view of the hinge part in the closed state, FIG. 5 is a side view of the resin protective tube being attached to the first tube connecting member, and FIG. 6 is a side view of the first tube connecting member. FIG. 7 is a side view of the resin protective tube attached to the connecting member, and FIG.
Fig. 8 is a partial sectional view showing the state when the hose and sleeve are attached, and Fig. 9 is a partial sectional view showing the state when the hose and sleeve are attached. , 1st
FIG. 0 is a side view showing a state in which the first pipe connecting member and the second pipe connecting member are connected, with the upper side in cross section.
FIG. 11 is a side view of a part of the ring member in cross section, FIG. 12 is a front view of the ring member, and FIG. 13 is a side view of the ring member.
FIG. 14 is a side view of the base of the tube connecting member, FIG. 14 is a front view of the base, and FIG. 15 is a side view showing the base partially in section. In the figure, 1 is the second pipe connecting member, 1a is one end, 1b
is the other end, 10 is a tapered screw, 12 is a central through hole,
13 is a male screw part, 15 is a key, 16 is a claw, 2 is a first tube connecting member, 20 is a base, 20a is a central through hole, 200 is a first locking part, 21 is an insertion part, 21a
2 is a central through hole, 23 is a female threaded portion, 22 is a claw portion, 2
20 is a vertical surface, 221 is an inclined surface, 3 is a ring member, 3
0 is a claw portion, 31 is a vertical surface, 32 is an inclined surface, 34 is a keyway, 38 is a claw, 4 is a coil spring, 6 is an elastic seal member, 8 is a resin protection tube, 80 is a first half cylinder , 800 is a second locking portion, 81 is a second half cylinder portion, 8
2 is a hinge portion, 810 is an engaging claw (engaging portion), 82
0 is an engaging claw receiving part (engaging part), 85 is an inner contact part,
9 represents a hose, 91 represents a sleeve, and 91a represents a protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A hole having a protrusion protruding radially outward at the tip.
a base having a central through hole and a first locking portion on the outer peripheral surface; a central through hole that is inserted into one end of the central through hole of the base in a manner that prevents it from coming off and communicates with the central through hole; A first resin pipe connecting member comprising an insertion portion to be inserted into a sticky hose hole and a threaded portion provided at the other end of the base and having one of a male threaded portion and a female threaded portion; covers the outer circumferential surface of the base and the other end covers the outer circumferential surface of the hose into which the insertion portion is inserted, and the first locking portion of the base is formed in a generally cylindrical inner circumferential surface. a first semi-cylindrical part having a semicircular cross section and a second locking part that locks with a part of the base; a second semi-cylindrical portion having a semicircular cross section and a second locking portion that locks with a part of the first locking portion; and a hinge portion in the cross-sectional direction of the first half-cylindrical portion and the second half-cylindrical portion. an engaging portion having a cylindrical body with both ends opposite to the cylindrical body closed, and an engaging portion formed on at least one of the first half-cylindrical portion and the second half-cylindrical portion, and the protrusion of the hose comes into contact with the A hose having a pipe joint characterized by: an inner abutment part that prevents the pipe from coming off, a resin protection pipe made of
vinegar. (2) A hose having a pipe joint according to item 1 of the claims for utility model registration, in which the threaded part of the second pipe connecting member is removably connected to the threaded part of the first pipe connecting member. . (3) The engaging part includes an engaging claw located on the opposite side of the hinge part in the cross section and integrally formed at the end of the first half cylinder part, and an engaging claw located on the opposite side of the hinge part in the cross section. and an engaging pawl receiving portion that is located and integrally formed at the end of the second half-cylindrical portion and is engaged with the engaging pawl. A hose with a fitting. (4) A hose with a pipe joint according to claim 1, wherein the insertion portion of the first pipe connection member and the base of the first pipe connection member are made of resin.