JPH0616206Y2 - Pipe fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pipe joint that can be connected with one touch.

[Conventional technology]

Conventionally, a pipe joint of this type has been used as a Japanese Utility Model Sho 57-4039.
Many publications such as Japanese Patent No. 8 are shown, and an example of the publication is No. 5
It will be described with reference to the drawings.

That is, in the figure, 1 is a cylindrical socket, 2 is the socket 1
The required number of tapered holes formed at the tip of the
A lock ball 4 is fitted in and held in each taper hole 2 in a state of protruding inward, 4 is a sleeve slidably fitted to the tip of the socket 1 via a spring 5, and 6 is the sleeve 4
Formed on the tip edge of the sleeve 4, 7 is a lock ball pressing portion which is connected to the escape portion 6 and is projected on the inner peripheral surface of the sleeve 4, and 8 is locked to the escape portion 6 to remove the sleeve 4. A stop ring fitted to the tip of the socket 1 to prevent the socket 1 from coming out, and 9 is an O attached to the inner peripheral surface of the socket 1 substantially at the center.
A ring, 10 is a valve element internally provided in the socket 1 via a spring 11, 12 is a valve seat of the valve element 10, and 13 is a cylindrical hose receiving portion screwed to the rear end of the socket 1. . 14 is a plug that can be airtightly inserted into the socket 1, and 15 is the plug
An annular groove for engaging a lock ball formed on the outer periphery of the front portion of 14 and a hose connection portion 16 formed on the rear portion of the plug 14.

In connecting the socket 1 and the plug 14 in the pipe joint configured as described above, first, the sleeve 4 is slid in the rear end direction against the spring 5, and the lock ball 3 is positioned in the escape portion 6. . After that, the plug 14 is inserted into the socket 1 and the sleeve 4 is released when the annular groove 15 is aligned with the lock ball 3. Then, the sleeve 4 is urged by the spring 5 to return to the original state, and the lock ball pressing portion 7 presses the lock ball 3 in the centripetal direction to securely connect the socket 1 and the plug 14. Then, by inserting the plug 14, the valve body 10 is pressed toward the rear end to connect the fluid passages.

On the contrary, when the connection between the socket 1 and the plug 14 is released, the sleeve 4 is slid in the rear end direction to release the lock ball pressing portion 7 and the lock ball 3 is positioned at the escape portion 6 as in the connection. The plug 14 is pulled out in the pressed state, the valve body 10 is returned to the original state, and the fluid passage is blocked.

[Problems to be solved by the invention]

By the way, in the conventional pipe joint as described above, the lock ball 3 is loosely fitted and held in the taper hole 2 in a state where the lock ball 3 is projected into the socket 1, and the lock ball pressing portion 7 of the sleeve 4 is used for centripetal direction. Since it is designed to be pressed against, the sleeve 4 must be slid one by one when the socket 1 and the plug 14 are attached and detached, and the escape portion 6 must be positioned on the lock ball 3, which makes the attachment and detachment operation extremely troublesome. Was there.

The present invention is intended to solve the conventional problems and to provide a convenient pipe joint in which the connection between the socket and the plug can be performed very easily with one touch.

[Means for solving problems]

That is, the present invention has a taper hole 1 formed in the socket 101.
In 02, a lock ball 103 is loosely fitted and retained outwardly so as to lock the tip edge of the sleeve 104, and a slit 117 is formed in the tapered hole 102 in the axial direction.
On the other hand, the front end of the plug 114 is formed in a substantially tapered shape, and the outer diameter of the base end thereof is slightly larger than the inner diameter of the socket 101.

[Action]

When connecting the socket 101 and plug 114, use the plug 11
Forcibly insert 4 into socket 101. Then, since the socket 101 has the slit 117, the tapered hole 10 is formed.
2, the lock ball 103 held outward is moved to the inside to engage the annular groove 15 of the plug 114, the sleeve 104 is unlocked, and the released sleeve 104 becomes the spring 105. It is biased and automatically slides in the distal direction to press and lock the lock ball 103 in the centripetal direction (see FIG. 4).

Conversely, when disconnecting the connection between the socket 101 and the plug 114,
After sliding the sleeve 104 in the rear end direction against the spring 105, the plug 114 is removed. Then, the expanded socket 101 contracts together with the tapered hole 102 and returns to the original state, and the held lock ball 103 is pressed outward to be locked to the tip portion of the sleeve 104 (see FIG. 3).

〔Example〕

An embodiment of the present invention shown in the drawings will be described below.

101 is a cylindrical socket made of synthetic resin or the like, 102
Is a required number of tapered holes formed in the front portion of the socket 101, 117 is a slit of a required length formed in the rear end direction from the tip of the socket 101 through each tapered hole 102, and 103 is outward of the socket 101. A lock ball loosely fitted and held in each taper hole 102 in a protruding state, 104 is a sleeve slidably fitted to the outer periphery of the front end of the socket 101 via a spring 105, and 106 is a tip edge of the sleeve 104. With a locking portion formed in a substantially stepped shape, by locking the locking portion 106 to the lock ball 103, the sleeve 104 is restricted from sliding in the tip direction of the socket 101. Reference numeral 114 denotes a socket whose front portion is formed in a substantially tapered shape, and the outer diameter of the base end portion thereof is slightly larger than the inner diameter of the socket 101. The others are the same as in the conventional example, and the same reference numerals indicate the same parts.

When connecting the socket 101 and the plug 114 in the pipe joint configured as described above, the plug 114 is simply forcibly inserted into the socket 101 without operating the sleeve 104. Then, since the socket 101 is formed with the slit 117, the socket 101 expands outward together with the tapered hole 102, and the held lock ball 103 moves inward to move the annular groove 15 of the plug 114.
, The sleeve 104 is unlocked, the released sleeve 104 is biased by the spring 105 and automatically slides in the distal direction, and the lock ball 103 is pressed and fixed in the centripetal direction (fourth position). See figure). Then, by inserting the plug 114, the valve body 10 is pressed toward the rear end to connect the fluid passages.

Conversely, when disconnecting the connection between the socket 101 and the plug 114,
After sliding the sleeve 104 in the rear end direction against the spring 105, the plug 114 is removed. Then, the expanded socket 101 shrinks together with the tapered hole 102 and returns to the original state, and the held lock ball 103 is pushed outward to be locked by the tip locking portion 106 of the sleeve 104 (see FIG. 3). .
Then, the valve element 10 biased by the spring 11 returns to its original state and shuts off the fluid passage.

[Effect of device]

According to the present invention, according to the above, the lock ball 103 is loosely fitted and retained in the tapered hole 102 formed in the socket 101 so as to lock the tip edge of the sleeve 104, and the tapered hole is formed. 102 has a slit 117 in the axial direction
On the other hand, the front end of the plug 114 is formed in a substantially tapered shape, and the outer diameter of the base end thereof is formed to be slightly larger than the inner diameter of the socket 101. Expand the socket 101 and the tapered hole 102,
Lock ball 103 held in tapered hole 102 with socket 101
In addition, it is possible to engage in the inward and outward directions to lock the annular groove 15 and the tip of the sleeve 104, and the socket 101 and the plug 114 can be attached and detached very easily as compared with the conventional example.
Moreover, it can be done smoothly with one touch.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a partially cutaway front view showing a socket 101, FIG. 2 is a side view of the same, and FIGS. 3 and 4 are half sectional views showing an operating state. , FIG. 5 is a half sectional view showing a conventional example. 101 …… Socket, 102 …… Taper hole, 103 …… Lock ball, 104 …… Sleeve, 105 …… Spring, 114 ……
Plug, 15 …… annular groove, 117 …… slit.

Claims (1)

[Scope of utility model registration request] 1. A socket 101 having a lock ball 103 loosely fitted and held in a tapered hole 102, and a plug 114 having an annular groove 15 into which the lock ball 103 is engageable.
In a pipe joint that detachably connects the socket 101 and the plug 114 with the sleeve 104 slidably fitted on the outer periphery of 01 through the spring 105, the lock ball 103 is provided in the tapered hole 102 at the tip edge of the sleeve 104. The taper hole 10
A slit 117 is formed in the axial direction 2 on the other hand, on the other hand, the tip of the plug 114 is formed in a substantially tapered shape, and the outer diameter of the base end is formed to be slightly larger than the inner diameter of the socket 101. A pipe joint characterized by the following.