JPH0317109Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is generally applicable to automobiles, various machines,
It is arranged as a supply path for oil and air supply to equipment, etc., and is made of metal pipes and resin tubes and has a thickness of 15 m/
The present invention relates to an improvement in the structure of a connecting joint for a pipe having a relatively small diameter of about 1.5 m or less.

[Conventional technology]

Conventionally, as shown in FIG. 3, this type of connection joint for small diameter pipes has a multi-stage enlarged diameter mounting hole in the shaft core that communicates with the flow hole of the connecting cylinder wall 23 projecting rearward. 22, and a joint main body 21 having a plurality of hanging holes 26, which have an integrated flange-shaped hanging wall 25 on the end peripheral edge side of the peripheral wall 24 of the maximum diameter thereof, and a plurality of hanging holes 26. An annular bulging wall P′ ₁ provided near the connection end on the pipe P ₁ side that is inserted into the smallest diameter part of the assembly hole 22 and tightly fits the seal ring member.
In order to lock the pipe P ₁ , when connecting the pipe P 1 , the opening on the side of the collar-shaped hanging wall 25 is provided with an inward elastic claw wall 28 that hooks into each of the hanging holes 26 . It is constituted by a cylindrical support 27 which hooks the stepped wall on the back side to the hanging wall 25 and locks the bulging wall P' ₁ on the pipe P ₁ side with the elastic claw wall. was.

[Problem that the invention attempts to solve]

However, in such a conventional structure, due to the structure of the diameter-enlarged assembly hole 22 consisting of multiple stages on the side of the joint body 21, the peripheral wall 24 portion of the maximum diameter part of the assembly hole is The hanging wall 2 in the longitudinal direction has a hanging hole 26 formed of a long hole in the peripheral wall portion and integrally formed on the end peripheral edge portion thereof.
Due to the structure of No. 5 and the structure of the cylindrical support body 27 having an elastic claw wall 28 which is separately hooked to the opening on the side of the hooking wall, the length in the longitudinal direction is forced, Since the overall product shape is large, there is a problem in that it often causes problems when used in a narrow place when installing or in a place where complicated bending is required.

In order to extremely effectively solve the above-mentioned conventional problems, the present invention has a stepped diameter-enlarged structure for the assembly hole on the side of the joint body that only has a seal ring member.
and the other member having a locking claw wall near the tip portion that locks with the bulging wall on the pipe side that is inserted into the assembly hole and tightly fits against the seal ring member, at least one pair in opposing directions. The structure of the socket body is connected to a cylindrical wall with a protruding elastic support arm, and the socket body is attached to the joint body by overlapping and hooking, thereby making it compact with a small diameter and short dimensions. The purpose of the present invention is to propose a connecting joint that has a simple product shape and can be used in narrow spaces and in places where complicated bends are required when installing pipes without any trouble.

[Means to solve the problem]

The present invention has an assembly hole with an enlarged diameter that communicates with the communication hole of the connecting cylinder wall projecting rearward in the shaft core, and further has a seal ring member on the side of the assembly hole, and the cylinder wall It consists of a joint body with a hooking wall near the base, and a socket body with a plurality of elastic support arms integrally protruding from the cylindrical wall and having an inward hook wall near the tip, A hanging part provided opposite to the hanging wall is hooked onto the inner circumferential surface of the socket body, and when a pipe is connected, the hooking claw wall is inserted into the assembly hole to form a seal. The gist of this is a connecting joint for small diameter pipes that is configured to be able to be attached and detached from each other by engaging with an outward annular bulging wall provided near the connecting end of the pipe that is tightly fitted to the ring member. Further, the hanging means is provided with an annular claw wall protruding from the outer peripheral surface near the base of the cylindrical wall of the joint body, and an annular claw wall located opposite to the claw wall on the cylindrical wall of the other hanging support body. A groove is provided or a threaded wall is provided on the outer peripheral surface near the base of the cylindrical wall of the joint body, and a threaded surface that is screwed onto the threaded wall is provided on the cylindrical wall of the other hanging support. be.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. Fig. 1 is a partially cutaway sectional view of the connecting joint for small diameter pipes of the present invention, and Fig. 2 is Fig. 1 showing another embodiment. In the corresponding diagram, 1 is a joint body having an enlarged diameter assembly hole 2 extending through the shaft center portion thereof and communicating with a communication hole in a connection cylinder wall 3 of a resin tube or a rubber hose etc., which is protruded rearward; A seal ring member 6 is provided on the circumferential side of the assembly hole 2 of the joint main body in a pinch-like manner via a spacer by a bushing with a locking flange fitted to the circumferential end of the hole, and the cylindrical wall 4 Either an annular claw wall 11 should be provided protruding from the outer peripheral surface near the base (FIG. 1) or a screw wall 13 should be provided (second
A hanging wall 5 is provided. Reference numeral 7 has an inwardly locking claw wall 9 near the distal end of the pipe P made of a metal tube or a resin tube, and a plurality of (in the illustrated embodiment, a pair of opposing) elastic support arms. 7', 7'' are integrally protruding from the cylindrical wall 8, and the socket body 7 is attached and superposed on the joint body 1, and is positioned opposite to the engaging wall 5 on the side of the joint body 1. Then, the hanging support 10 provided on the inner circumferential surface of the socket body is hung on the hanging wall, and when connecting the pipe, the locking claw wall 9 is inserted into the 2 parts of the assembly hole and the seal ring is attached. An outwardly bulging wall provided near the connection end on the pipe P side that tightly fits into member 6
It is configured to be locked with P' and to be detachable from each other.

Note that 12 is an annular groove (FIG. 1) provided in the cylindrical wall 8 on the side of the socket body 7 that is hooked to the claw wall 11, and 14 is a cylindrical groove that is screwed to the screw wall 13. This is a threaded surface provided on the wall 8, and 15 is a handle extending in the axial direction, which facilitates the removal of this connection joint from the pipe P. [Function] In the present invention, the socket body 7 is attached to the joint body 1, the engaging portion 10 is hooked to the hanging wall 5 on the joint body side, and the pipe P is inserted into the assembly hole 2 of the joint body 1. If the pipe P is further pressed, the locking claw part 9 will lock with the bulging wall P' on the pipe P side, and the joint body 1 and the pipe P will be connected.

[Effect of idea]

As explained above, the small-diameter pipe connection joint according to the present invention has a socket structure in which the socket body 7 having the inwardly engaging claw wall 9 is attached to the joint body 1 and superposed on the joint body 1 so that they are mutually hooked. , the diameter is small and short in the longitudinal direction due to the stepped diameter-enlarging structure having only the seal ring member 6 in the second part of the assembly hole and the overlapping attachment structure of the socket body 7. It is possible to obtain a compact product shape, and therefore, when installing pipes, it is possible to connect them without any problem even in places where complicated bends are required. This is an extremely useful connecting joint for small-diameter pipes that has an integral structure with the branch 10, making attachment and detachment operations easier.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway sectional view of a connecting joint for small diameter pipes showing one embodiment of the present invention, Fig. 2 is a view corresponding to Fig. 1 of the same showing another embodiment, and Fig. 3 is a view of a conventional example. It is a partially cutaway sectional view. 1...Joint body, 2...Assembling hole, 3...Connecting cylinder wall, 4...Cylindrical wall, 5...Hanging wall, 6...Seal ring member, 7...Socket body, 7', 7'' ……
Elastic support arm, 8...Cylindrical wall, 9...Locking claw wall, 1
0... hanging branch, 11... annular claw wall, 12... annular groove, 13... threaded wall, 14... threaded surface, P... pipe, P'... bulging wall.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An assembly hole 2 with an enlarged diameter that communicates with the flow hole of the connecting cylinder wall 3 protruding rearward is provided through the shaft core, and a seal ring member is provided on the side of the assembly hole. 6 and a hooking wall 5 near the base of the cylindrical wall 4; a plurality of elastic support arms 7' having an inward locking claw wall 9 near the tip;
7'' is connected to a cylindrical wall 8 and integrally protrudes from the socket body 7, and a hanging support 10 is provided on the inner peripheral surface of the socket body to face the hanging wall 5.
and when connecting the pipe P, the locking claw wall 9 is provided near the connecting end of the pipe P that is inserted into the second assembly hole and tightly fitted to the seal ring member 6. outward annular bulging wall
A connecting joint for small diameter pipes, characterized in that it is configured to be engaged with P' and to be mutually detachable. 2. Utility Model Registration Claim 1, wherein the hanging means includes an annular claw wall 11 protruding from the outer peripheral surface of the cylindrical wall 4 of the joint body 1 near the base thereof;
A connecting joint for a small diameter pipe, characterized in that an annular groove 12 is provided in a cylindrical wall 8 portion of the other socket body 7 to be hooked to the claw wall 11. 3 Utility Model Registration In Claim 1, the hooking means is provided with a threaded wall 13 on the outer peripheral surface side near the base of the cylindrical wall 4 of the joint body 1, and is attached to the cylindrical wall 8 of the other socket body 7. , the screw wall 1
3. A connecting joint for a small diameter pipe, characterized in that it has a threaded surface 14 that is screwed into the pipe.