JPS58694A - Grip ring for connecting pipe - 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 The present invention provides a grip ring for pipe connection.

When connecting pipes using a connecting coupling, conventionally a grip ring 1 as shown in FIGS. 1 to 4 is interposed between the coupling body 2 and the sleeve 3.

That is, this grip ring l is
As shown in the figure, there is a ring body ia that is in contact with the open end surface of the coupling body 2, and a plurality of seven ring bodies ia are provided on the inner peripheral edge of the ring body 1a in an obliquely inward posture.
A toothed piece 1b that bites onto the outer circumferential surface of a pipe that is inserted into...
・It is integrally molded with steel plate etc.
For example, as shown in FIGS. 1 and 2, the coupling body 2 may be caulked by caulking the sleeve 3 in a cane shape in contact with the opening tIIA of the coupling body 2.
The toothed piece 1b of this grip ring 1 is pressed against the pipe by its spring action to prevent the pipe from coming off from the coupling body 2.

However, when the pipe connected using the grip ring lt is turned to be pulled out from the coupling body 2, the contact surface between the opening #Il1 surface of the coupling body 2 and the ring body 1aJ of the grip ring 1 and the ring Since slippage occurs on the contact surface between the main body 11 and the sleeve 3, the grip ring 1 rotates around the pipe against the crimping resistance of the sleeve 3, making it impossible to disconnect the pipe from the coupling main body 2. It had a score of 7.

SUMMARY OF THE INVENTION It is therefore an object of the invention to provide a grip ring for a pipe III that does not rotate with the pipe during disconnection.

An embodiment of the present invention is shown in FIGS. 5 to 7. In other words, this grip ring 1' for a pipe 111a has a small anti-rotation protrusion 1' on the contact surface of the ring body 1' to the opening end surface of the coupling body. c...1, and a plurality of tooth pieces 1'b... are formed on the inner peripheral edge of the ring body l'.
The structure for forming is the same as that of the conventional example.

In this way, a small anti-rotation protrusion 1'C is formed on the j# surface of the ring body I'm to the opening end surface of the coupling body. When the trap ring 1' is fixed on the contact surface, the small anti-rotation protrusions 1'c of the ring body 1'& are engaged with the opening end surface of the coupling body, and the pipe from the coupling body is Even if the pipe is turned, the grip ring 1 will be disconnected due to the shear resistance between the small protrusion 1'c and the coupling body.
' can be prevented from rotating together with the pipe, and the pipe can be disconnected smoothly.

The grip ring 1' of Nao and Ko can be applied not only to the case of pipe connection by the front E (D coupling) but also to the case of pipe connection by a connector, and in that case, the grip ring 1' to the connector body 4 can be applied. Examples of mounting are shown in Figures 8 to 10. In the figures, 5 is a grounding screw and 6 is a sleeve.

In this application example, the rotation of the grip ring l' and the engagement of the small stop projection 1'c with the opening end surface of the connector body 4 prevent the grip ring 1' from rotating together when disconnecting the pipe. You can disconnect smoothly.

Another embodiment of this invention is No. 115! Show JK. In other words, the grip ring for this pipe** is 1#, as described above! i!
In the embodiment, the small anti-rotation protrusions 1'c protruding from the ring body L# are protruded not only on the surface facing the opening end surface of the coupling body, but also on the opposite surface, that is, on the side in contact with the sleeve. The other structures, such as the tooth piece 1''b, are the same as in the previous embodiment.

In this way, small anti-rotation protrusions 1f c... are formed on both sides of the ring body 1'si.
There is also a small anti-rotation projection f between the grip ring 1' and the grip ring 1'.
The shear resistance caused by the occlusion of c acts, and it is possible to more effectively prevent the grip ring l'' from collapsing when disconnecting the grip ring.

As described above, the grip ring for / l< A tooth piece that calibrates the surface of the pipe to be inserted into the pipe body for connection, and a detent protrusion protruding from the contact surface of the ring body to the open end surface of the pipe body for connection. (from the pipe connection tube body)
(During the pipe connection disconnection work, it can be prevented by the occluding action of the pipe rotation prevention small protrusions when the pipe is closed, and the work can be carried out smoothly.)

[Brief explanation of drawings]

Figure 1 and #! 2 shows a partially new front view and a side view of a conventional example, and FIGS. 3 and 4 respectively show a plan view and a side view of a grill knob IJing of the conventional example.
Fig. 5 is a plan view showing one embodiment of the present invention, Fig. 6 is a partial side view thereof, Fig. 7 is an enlarged sectional view of the main part thereof, and Figs. FIG. 11 is a partial sectional view showing another embodiment of the present invention. 1', 1"...Guri Tsubring, 1' Wing, Do[°-
! J-song typeface, l'b, 1"b... cypress piece, l'
c, l'e... small protrusion to prevent rotation

Claims (1)

[Claims] A ring body disposed with mW at the open end W of the pipe connection pipe body, and a tIJ protruding radially from the inner peripheral edge of this ring body.
a tooth piece that engages with an open surface of a pipe that is inserted into the pipe connection pipe body; and a detent protrusion that protrudes from a surface of the ring body that contacts the opening #Im of the pipe connection pipe body. Nine pipes ready! Gusider ring for lll1l.