JPS6249091A - Pipe joint structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pipe joint for connecting various types of pipes, hoses, etc., and particularly to a pipe joint structure that improves workability when releasing connections.

2. Description of the Related Art As a conventional pipe joint, a structure shown in FIGS. 4 and 5 has been proposed (Utility Model Application No. 87925/1983). That is, the pipe joint is composed of a connector mail 2 having an inner cylinder 1 having a circular cross section, and a connector female 4 having an outer cylinder 3 which is removably fitted into the inner cylinder I. A disk-shaped grip portion 5 is formed at the base end. The gripping portion 5 is provided with locking rods 6, 6 extending along the axial direction of the inner cylinder 1, and the tip portions of the locking rods 6, 6 are attached to the outer cylinder 3. A claw 7 that engages with the proximal edge 3al is formed. -Protrusions 8, 8 are formed on the outer peripheral surface of the outer cylinder 3. In this structure 1, when the connection between the connector male and the female 2.4 is released, the connector female 4 is rotated and the protrusion 8.8 is fixed to the locking rod as shown in FIG. 6, 6 inner surface 5
a, 5a, push up the locking rods 6, 6, bend them outward, and push the claws 7, 7 away from the end edge 3a.
After separating them, the inner cylinder 1 and the outer cylinder 3 are separated.

Problems to be Solved by the Invention: However, with such a conventional device, the claw 7
In order to sufficiently bend and deform the locking rods 6, 6 in order to separate them from the proximal edge 3a (this is done so that the most extreme surfaces of the protrusions 8, 8 just touch the inner surfaces 6a + 6al of the locking rods 6, 6). The connector female 4 must be rotated so that the connector female 4 is in contact with the locking rods 6, 6. Therefore, in the uncoupling operation (as described above, the most extreme surface of the protrusion 8.8 must be aligned with the inner surface of the locking rod 6, 5a
The connector female 4 must be rotated and adjusted so that the connector female 4 and the locking pieces 6 and 5 are aligned with each other. This has the disadvantage of reducing work efficiency. In particular, if the uncoupling work is a so-called blind work due to the surrounding conditions, the protrusion 8.
The position of the projections 8, 8 cannot be easily brought into contact with the inner surfaces 5a, 5a of the locking rods 6, 6, and work efficiency is further reduced. Ta.

The present invention has been made in view of these conventional problems.
7, and by simply rotating the female connector 4 in a predetermined direction, the protrusions 8,
8 is pressed against the inner surfaces 5a, 5a of the locking rods 6, 6 to provide a pipe joint structure.

Means for Solving the Problems In order to solve the above-mentioned problems, in the present invention, an inner cylinder and an outer cylinder having a circular cross section are removably fitted together, and the proximal outer circumference of the inner cylinder (this , a proximal edge f of the outer cylinder extending along the axial direction;
One side is provided with a locking rod that engages with this.

In a pipe joint in which a projection is provided on the outer circumferential surface of the outer cylinder to rotate the outer cylinder (thereby bringing the inner surface of the locking rod into pressure contact with the locking rod and bending and releasing the locking rod), on the side of the projection, A stopper piece is provided that comes into contact with the side surface of the locking rod when the outer cylinder is rotated.

Effect In the above configuration E, when the outer cylinder or the inner cylinder is rotated,
When the protrusion comes into pressure contact with the inner surface of the locking rod, the side of the protrusion
The provided stopper piece abuts against the side surface of the locking rod. Therefore, the rotation of the outer cylinder or the inner cylinder is prevented by the stopper piece coming into contact with the side surface of the locking rod, and the protrusion can be easily brought into pressure contact with the inner surface of the locking rod. It is possible to accurately sense that the inner surface of the locking rod has come into contact with pressure, and it is possible to perform the uncoupling operation without visually observing the displacement of the projection.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the same reference numerals to the same parts and members as those of the conventional apparatus.

That is, as shown in FIG. 1, the pipe joint includes a connector male 2 having an inner tube 1 with a circular cross section, and a female connector 4 having an outer tube 3 with a circular cross section which is detachably fitted into the inner tube 1. It consists of

At the base end of the connector mail 2, there is a disc-shaped gripping part 5.
is formed. The gripping portion 51 is provided with a pair of locking rods 6°6 extending along the outer circumferential axis direction of the inner cylinder 1. A pawl 7.7 is provided which is bent in the direction of. Further, the outer peripheral surface of the inner cylinder 1 is formed with a groove 10 into which an O ring 9 and an O ring (not shown) provided on the inner peripheral surface of the outer cylinder 3 are fitted.

On the other hand, the proximal end of the connector female 4 is also formed with a disc-shaped gripping part 11, and the gripping part 11 and the outer cylinder 3 are connected to each other.
A small diameter portion 12 is formed between the proximal edge portions 3a.

As shown in an enlarged view of FIG. 2, projections 8, 8 are formed at symmetrical positions on the outer cylinder 3. The protrusion 8,
8 is the inner surface 6' of the locking rod 6.6 as shown in FIG.
e 6 a i Pressed state f and then the claws 7, 7
The locking rods 6, 6 are separated from the proximal edge 3a.
It has a height dimension that allows it to be bent and deformed, and both protrusions 8.
Stopper pieces 13, 13 that stand up in the radial direction of the outer cylinder 3 are provided protruding from each side portion symmetrical with respect to the point 8. Note that in the figure, 14 +''ii is a hose connected to each base end of the connectors 2 and 4.

In this embodiment with the above configuration, connector mail,
The females 2 and 4 are connected by fitting the inner tube 1 and the outer tube 3 together. Then, when canceling the connection between Connector Female 4 and Female 2.4, for example, connect Connector Female 4 to the second
Rotate in the direction of the arrow in the figure. Then, the protrusions 8, 8 are rotationally displaced together with the outer cylinder 3, and intervene on the inside of the locking rods 6, 6, and press against the inner surface 6a of the locking rod 6°6. At the same time (the stopper pieces 13, 13 contact the side surfaces 6b of the locking rods 6, 6).
can be brought into pressure contact with the inner surfaces 5a, 5af of the locking rod 6.6, and this operation can be performed blindly without visually observing the rotational displacement of the projections 8, 8. As shown in FIG.
8 bends and deforms the outer cylinder 3 in the radial direction, and the claws 7, 7 are separated from the proximal edge 3a of the outer cylinder 3. Therefore, by separating the inner cylinder 1 and the outer cylinder 3 in the axial direction, the connector mail 2. The connection with connector female 4 is then released. When the connector mail 2 side is rotated, the locking rods 6, 6 ride on the protrusions 8, 8, and after disengaging the claws 7.7 from the proximal edge 3a, the stopper pieces 1
3 and 13, rotation is prevented, and excessive rotation is of course suppressed.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention provides a locking rod on the outer periphery of the proximal end of the inner cylinder that engages with the proximal edge of the outer cylinder that fits into the inner cylinder, and Rotating operation of the outer cylinder (
Accordingly, in a structure in which a protrusion that presses against the inner surface of the locking piece and bends and releases the locking rod is sunk, the locking piece is attached to the side of the protrusion as the outer cylinder is rotated. A stopper piece that comes into contact with the side surface is provided. Therefore, when releasing the connection between the inner cylinder and the outer cylinder, the stopper piece is attached to the locking pieces Q and I.
By abutting evenly, the protrusion will inevitably contact the inner surface of the locking rod without causing excessive rotation. Therefore, the alignment between the protrusion and the inner surface of the locking rod will be avoided. This makes it possible to improve the workability when releasing the connection, and since the protrusion and the locking rod are necessarily aligned as described above, the removal of the connection can be done in a blind manner. The work can be easily accomplished even in cases where

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
3 is a side view showing the state of the embodiment when the connection is released; FIG. 4 is a perspective view showing a conventional pipe joint; and FIG. 5 is a perspective view of the same pipe joint. FIG. 3 is a perspective view showing a state when the coupling is released. 1... Inner cylinder, 3... Outer cylinder, 6... Locking rod, 8...
Protrusion, 13... stopper piece. Fig. 1 4-----Kokudazume 1115j1----
- Handling part 6 - - 1 - - - 7 - 11 - - 9 9 - - - - - 011 ng 10 - - - - - Ichiton 12 - - - One small diameter section Fig. 4 Fig. 5

Claims (1)

[Claims] (1) An inner cylinder with a circular cross section and an outer cylinder are removably fitted together, and the inner cylinder extends along the axial direction and engages with the proximal edge of the outer cylinder. In the pipe joint, a locking rod is provided, and a projection is provided on the outer circumferential surface of the outer cylinder that presses against the inner surface of the locking rod and bends and releases the locking rod as the outer cylinder is rotated. A pipe joint structure characterized in that a stopper piece is provided on a side portion of the locking rod to come into contact with a side surface of the locking rod as the outer cylinder is rotated.