JPH0319436B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a pipe joint for connecting a pipe body such as a tube or a hose that transmits pressure and transfers fluid to various devices.

[Conventional technology]

Conventionally, pipe joints for connecting tubes, hoses, and other pipe bodies that supply fluids such as air, oil, and water to devices that use fluids such as air, oil, and water have been used, for example, as shown in FIG. There is one that is composed of a sealing material 12, a back ring 13, a retaining ring 14, a stepped collar 15, and a stepped release ring 16, which are inserted in order toward the stepped portion. In this pipe joint, the stepped collar 15 and the stepped release ring 16 engage with each other through their stepped portions 15a and 16a, but since there is some play A between them, Even after the tube body 17 is inserted,
By pressing the stepped release ring 16 in the direction of the arrow, the claw portion 14a of the retaining ring 14 is deformed and disengaged from the tubular body 17, as shown in the lower half of FIG. The tube body 17 can be pulled out. In addition, when the stepped release ring 16 is not pressed, as shown in the upper half of FIG.
It bites into the tube body 17 and prevents it from falling off.

[Problem that the invention seeks to solve]

However, the above-mentioned conventional pipe joints have problems in that they have a large number of parts, making assembly work cumbersome, and some parts can only be made of metal, resulting in high manufacturing costs.

Therefore, the pipe joint of the present invention has been made with the aim of solving the problems that the conventional pipe joints have.

[Means for solving problems]

Therefore, the pipe joint of the present invention has a main body 1 having a pipe shape with a port 1a, and having grooves 5, 5 facing each other extending to the port 1a at appropriate positions, and one end of a support ring 3a. A tube holding member 3 connected to one end of a locking ring 3b with elasticity and opened at an angle θ, and a release member 4 connecting pressing portions 4a and 4b with a connecting portion 4c having elasticity.
The tube holding member 3 is installed in the opening 1a of the main body 1, and the releasing member 4 is arranged inside the main body 1.
The pressing part 4a is exactly fitted into one of the grooves 5 of the main body 1, and the pressing part 4b is inserted into the tube holding member 3.
It abuts the end of the locking ring 3b, and is positioned and fitted into the other cut groove 5 of the main body 1 on the front side.

Furthermore, the pipe joint of the present invention has an opening 1 of the main body 1.
a A convex portion or concave portion extending in the axial direction is provided at at least one location on the inner surface, and a concave portion or convex portion that fits into the convex portion or concave portion provided on the main body 1 is provided on the outer periphery of the support ring 3a of the tube holding member 3. It is said that

Further, the pipe joint of the present invention has a tube holding member 3.
The opening angle θ of the support ring 3a and the locking ring 3b is
is approximately 5 to 45 degrees.

Furthermore, in the pipe joint of the present invention, a locking claw 3c is provided on the inner surface of the locking ring 3b of the tube holding member 3.

[Effect]

As a result of implementing the above means, the pipe joint of the present invention has the following features:
It can be composed of a main body 1, a tube holding member 3, and a release member 4.
After inserting the tube holding member 3 into the opening 1a, the pressing portions 4a and 4b of the release member 4 may be fitted into the grooves 5, 5 of the main body 1, respectively. Moreover,
The main body 1, tube holding member 3, and release member 4 can all be made by integral molding of synthetic resin.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

The pipe joint of the present invention includes a main body 1, a seal member 2,
It consists of a tube holding member 3 and a release member 4.

The main body 1 has a tube shape with a port 1a, and the main body 1 has a port 1a at an appropriate position.
Cut grooves 5, 5 are formed facing each other, and a first step portion 6 and a second step portion 7 are formed inside the opening 1a of the main body 1.
is provided, and a third step portion 8 is further provided as required.

The sealing member 2 is an O-ring in this embodiment, but any other appropriate material may be used, and the sealing member 2 is fitted into the second step 7 of the main body 1.

The tube holding member 3 is made by connecting one end of the support ring 3a and one end of the locking ring 3b with elasticity while opening the angle θ. This tube holding member 3 is supported by the main body 1 by fitting the tube holding member 3 into the main body 1. The angle θ may be adjusted to an appropriate angle depending on the material of the connected tube or hose, or the pressure of the fluid supplied inside these, but it is preferably adjusted to about 5 to 45 degrees. Furthermore, a locking pawl 3c can be provided on the inner surface of the locking ring 3b as shown in this embodiment.

The release member 4 has a substantially C shape in which a pressing part 4a and a pressing part 4b are connected by a resilient connecting part 4c, and the pressing part 4a is the same as one of the grooves 5 formed in the main body 1. The pressing part 4b is formed to have a width thinner than the other groove 5 formed in the main body 1, and the pressing part 4a is just fitted into the one groove 5 of the main body 1, and the pressing part 4b is The release member 4 is attached to the main body 1 by being positioned on the front side and fitted into the other cut groove 5 of the main body 1 so as to abut the end of the locking ring 3b. Note that the pressing portion 4b may be provided with a collar 4d if necessary.

Furthermore, the pipe joint of the present invention is shown in FIGS. 4 and 5.
As shown in the figure, when the tube holding member 3 is installed inside the main body 1, the main body 1 of the tube holding member 3
In order to determine the mounting direction of the main body 1, a flat portion 9 extending in the axial direction is provided at at least one place on the inner surface of the opening 1a of the main body 1.
a, a convex part 10a, or a concave body (not shown), and a flat part 9b that fits into the flat part 9a, convex part 10a, or concave body provided on the main body 1 on the outer periphery of the support ring 3a of the tube holding member 3. A recess 10b or a protrusion (not shown) may be provided.

The pipe joint of the present invention configured as described above has the following features:
As shown in FIG. 2, the pressing portion 4b of the release member 4
is located on the front side in the cut groove 5 of the main body 1, and is pressed in the direction of arrow a, so that the pressing part 4b is located on the rear side in the cut groove 5, as shown in FIG. When the tubular body 17, such as a tube or a hose, is inserted up to the third step 8 of the main body 1 and the force pressing the pressing part 4b is released, the pressing part 4b returns to its original state due to the elasticity of the connecting part 4c. At the same time as it returns to its original position, the locking ring 3b also returns to its original position.
The inner surface of the locking ring 3b or the locking pawl 3c provided on the inner surface of the locking ring 3b locks onto the outer surface of the tubular body 17 and holds the tubular body 17.

〔Effect of the invention〕

The pipe joint of the present invention is constructed as described above, and has three parts: the main body 1, the tube holding member 3, and the release member 4.As the number of parts is small, assembly work is very simple. Moreover, since all the parts can be made by integral molding of synthetic resin, the manufacturing cost is also low, and it has excellent effects.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the pipe joint of the present invention. FIGS. 2 and 3 are longitudinal sectional views of the pipe joint. 4 and 5 are perspective views of a main body and a tube holding member showing other embodiments of the pipe joint. 6th
The figure is a longitudinal cross-sectional view of a conventional pipe joint. DESCRIPTION OF SYMBOLS 1...Main body, 1a...Port, 3...Tube holding member, 3a...Support ring, 3b...Latching ring, 3c...Latching claw, 4...Release member, 4a, 4
b...Pushing part, 4c...Connecting part, 5...Cutting groove.

Claims (1)

[Scope of Claims] 1. A main body 1 having a tubular shape with a passage 1a and having facing grooves 5, 5 extending to the passage 1a at appropriate positions, and is engaged with one end of a support ring 3a. A tube holding member 3 connected to one end of a ring 3b with elasticity and opened at an angle θ, and a pressing portion 4.
a and a pressing part 4b connected by a connecting part 4c having elasticity, the tube holding member 3 is installed inside the opening 1a of the main body 1, and the pressing part 4a of the releasing member 4 is It is fitted exactly into one cut groove 5 of the main body 1, and the pressing part 4b is brought into contact with the end of the locking ring 3b of the tube holding member 3, and is located on the front side in the other cut groove 5 of the main body 1. A pipe fitting characterized by being fitted with a 2 A protrusion or a recess extending in the axial direction is provided at at least one location on the inner surface of the passage 1a of the main body 1, and a recess or a recess that fits into the protrusion or recess provided on the main body 1 is provided on the outer periphery of the support ring 3a of the tube holding member 3. The pipe joint according to claim 1, further comprising a convex portion. 3. The pipe joint according to claim 1 or 2, wherein the opening angle θ of the support ring 3a and the locking ring 3b of the tube holding member 3 is about 5 to 45 degrees. 4. The pipe joint according to claim 1, 2 or 3, wherein a locking claw 3c is provided on the inner surface of the locking ring 3b of the tube holding member 3.