JPH04136588A - Quick connector - Google Patents

Abstract

PURPOSE:To quickly connect pipes and improve reliability in piping by providing a male member having a flange with the first engaging groove and notch opening, female member having a receiving section with the second engaging groove, and locking member. CONSTITUTION:A locking member 3 comprises elastic material rounded so that the whole becomes C-like shape. This is held by the first engaging groove 131 of a male section 1 resisting against its elastic force. The locking member 3 is thus contained in such a way that the external peripheral side is projected due to its elastic restoring force. In addition, the side of one end 1a of the male member 1 is inserted into the receiving section 21 of a female member 2. At this moment, the locking member 3 is made to shrink in diameter resisting against its elastic force, and the whole body is contained in the first engaging groove 131, and the side of the end 1a of the male member 1 is inserted into the female member 2. After that, the locking member 3 is expanded toward the second engaging groove 211 in diameter due to its elastic force, and the internal peripheral side is held by the first engaging groove 131, and the external side is held by the second engaging groove 211. The male member 1 and female member 2 are thus axially and radially locked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a quick connector for piping for connecting hoses, pipes, etc. for transferring fluids such as gasoline, oil, water, and air.

[Prior Art] As a quick connector for connecting hoses, such as a joint for piping, the one shown in Fig. 14 is known.
4-41794). This piping joint consists of a cylindrical male member 104 having a ring-shaped protrusion 104a formed on the outer circumferential surface of one end, and a cylindrical female member having an annular overhang 103a protruding radially inward at the open end. 103 and a male member 104
The stopper member 106 is made of a flexible material and is inserted and locked into the female member 103, and the seal member 105 and bushing 107 are interposed between the stopper member 106 and the side member 103. There is. The stopper member 106 includes a cylindrical base 161 formed with an annular groove 161a that fits into the ring-shaped protrusion 104a of the male member 104;
It consists of a plurality of leg parts 1.62 extending from this base part 161 and having grooves 1628 formed therein which fit into the annular projecting part 103a of the female member 103.

In this piping joint, first, by inserting the male member 104 into the stopper member 106, the stopper member 106 is bent in the centrifugal direction, and the annular groove 161a and the ring-shaped protrusion 104 are
After that, the concave groove 162a of the stopper member 106 is bent radially inward to form the annular projecting portion 103a.
The male member 10 is fitted together with the stopper member 106.
4 into the female member 103. In this way, the female member 103
It becomes possible to quickly hold the male member 104 inside.

[Problems to be Solved by the Invention] However, in the conventional piping joint described above, when the male member 104 is pulled in the direction in which the male member 104 is pulled out from the female member 103 or the female member 103 and the male member are 104, the male member 104 is held only by the fitting between the annular groove 161a and the ring-shaped protrusion 104a and the fitting between the groove 162a and the annular overhang 103a. Therefore, if the tensile external force is large, the leg PJS 162 will deform, and the nt member 104 will deform the female member 103.
In some cases, the piping was not stably held within the pipe, and the reliability of the piping was insufficient.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a quick connector that allows quick piping and is highly reliable in piping.

[Means for Solving the Problems] The quick connector of the present invention has a first engagement groove that protrudes from the outer circumferential surface of one end and has a ring-shaped recess at the top, and has (I!) of the first engagement groove. !A cylindrical male member having a flange having a cutout opening formed by cutting out the side wall of the first engagement groove on the end side; and a ring that faces the first engagement groove when the flange is inserted. a cylindrical female member having a receiving portion having a second engagement groove formed of a shaped recess on the inner peripheral surface;
The entire body is accommodated in the first engagement groove or the second engagement groove by operation, and the inner peripheral surface side is held in the first engagement groove by relative insertion of the male member and the female member. The present invention is characterized in that it includes a locking member made of an elastic material whose outer peripheral surface side is held in the second engagement groove and locks the male member and the female member.

[Operation] In order to perform piping with the quick connector of the present invention, the locking member is held in advance in the first engagement groove of the male member or the second engagement groove of the female member against its elastic force. the locking member first
When the locking member is held in the engagement groove, the outer circumferential surface side of the locking member projects radially outward from the first engagement groove due to its elastic restoring force, and becomes in a state in which the diameter can be reduced. In addition, when the locking member is held in the second engagement groove, the inner peripheral surface side of the locking member protrudes radially inward from the second engagement groove due to its elastic restoring force, so that the locking member can be expanded in diameter. becomes.

After this, the locking member is reduced in diameter against the elastic force of the locking member held in the first engagement groove or expanded in diameter against the elastic force held in the second engagement groove. The entire male member is accommodated in the first engagement groove or the second engagement groove, and one end side of the male member is relatively inserted into the female member.

When the relative insertion of the male member and the female member is completed, the inner peripheral surface side of the locking member is held in the first engagement groove and the outer peripheral surface side of the locking member is held in the second engagement groove due to its elastic restoring force. This results in
The male member and the female member are locked in the axial and radial directions.

The diameter of the locking member is reduced or expanded from the outside through the notch opening against its elastic force, and the outer peripheral surface side is released from the second engagement groove, or the inner peripheral surface side is opened from the first engagement groove. By releasing the locking member and storing the entire locking member in the first engaging groove or the second engaging groove, the locking between the male member and the female member is released, and the male member is separated from the female member. I can handle it.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

As shown in FIGS. 1, 2, and 3, the quick connector of this embodiment includes a cylindrical male member 1 and a cylindrical female member 2.
and a locking member 3.0 ring 4.5 held on the male member 1.
It consists of

As shown in FIGS. 3 and 4, the male member 1 has one end 1a.
Two O-ring grooves 11.12 formed on the outer peripheral surface of the side and holding the O-ring 4.5, and these O-ring grooves 11.1.
It has a flange 13 that protrudes from the outer circumferential surface forming the flange 2 toward the narrow end 1b, and a step surface 14 for connecting a hose or the like. The flange 13 has a tapered surface 13a formed from one end 1a side to the sacrum (!lb side), a top portion having a first engagement groove 131 consisting of a ring-shaped recess, and (i!!! of the first engagement groove 131).
It consists of a vertical surface having a cutout opening 132 formed by cutting out the side wall of the first engagement @131 on the end 1b side. This male member 1 has an outer diameter of dl at one end 1a, an outer diameter of the top of the seven flange 13 of d2, and an outer diameter of the first engagement groove 131 of d3.

As shown in FIGS. 1 and 2, the female member 2 includes a receiving part 21 that faces the flange 13 when the flange 13 is inserted, and a base part 22 that is adjacent to the receiving part 21 and formed at the back. and has. The receiving portion 21 includes a guide surface 21a whose diameter gradually decreases toward the back from an inner diameter exceeding d2 to an inner diameter approximately equal to d2, and a first engagement groove on the inner circumferential surface at the back adjacent to the guide surface 21a. 131 and a second engagement groove 211 consisting of a ring-shaped recess facing the second engagement groove 21 .
Tapered surface 1 of 7 lunge 13 on the inner peripheral surface of the rear side adjacent to 1
A tapered surface 21b is formed to match with 3a. The second engagement groove 211 is formed with an inner diameter exceeding d2,
The opening end side of the tapered surface 21b is formed approximately equal to d2. An inner surface 22a having an inner diameter substantially equal to dl is formed in the base 22 in parallel with the axis from the inner end of the tapered surface 21b.

In this female member 2, the end portion of the receiving portion 21 is bent inward to form a tapered guide surface 21a whose inner diameter decreases toward the inside.

As shown in FIGS. 3 and 4, the locking member 3 (d2
-63), and an elastic material having a rectangular cross-section and having a width substantially equal to the width of the first engagement groove 131 and the second engagement groove 211 is rolled into a C-shape as a whole. . At both ends of this locking member 3, claw portions 3a projecting toward the center,
3b is formed.

In order to perform piping with this quick connector, first
The locking member 3 is held in the first engagement groove 131 of the male member 1 against its elastic force. As a result, the locking member 3 is housed with its outer peripheral surface protruding due to its elastic restoring force. Then, one end 1a side of this male member 1 is relatively inserted into the receiving portion 21 of the female member 2. At this time, as shown in FIGS. 5 and 6, the locking member 3 is inserted into the female member 2 by the operator.
By relatively pressing the male member 1 , the wound member 2 is guided by the guide surface 21 a and its diameter is reduced against the elastic force, and the whole is accommodated in the first engagement groove 131 .

Then, one end 1a side of the male member 1 is relatively inserted into the female part vj2.

When the relative insertion between the female member 2 and the male member 1 is completed, the locking member 3 expands toward the second engaging recess 211 due to its elastic force, as shown in FIGS. 7 and 8. The inner peripheral surface side is held in the first engagement groove 131 and the outer peripheral surface side is held in the second engagement groove 211. Thereby, the male member 1 and the female member 2 are locked in the axial direction and the radial direction.

In this way, with this quick connector where the piping has been completed,
As shown in FIG. 1, the O-ring 4.5 is connected to the O-ring groove
．． 12 and the inner surface 22a to maintain a sealed state, and fluid is transferred via the cylindrical male member 1 and the cylindrical female member 2. At this time, even if the male member 1 is pulled in the direction of removal from the female member 2 or an external force in the direction perpendicular to the axis is applied between the male member 1 and the female member 2, the male member 1 Since the male member 1 is strongly held via the female member 2 and the locking member 3, the male member 1 is stably held within the female member 2 even with a certain amount of tensile force or external force.

If the operator wishes to separate the male member 1 from the female member 2, the operator will remove the male member 1 from the female member 2 as shown in FIGS. 10 and 11.
A jig 6 that can hold the claws 3a and 3b of the locking member 3 is used. The operator inserts the tip of the jig 6 through the notch opening 132 of the male member 1, brings the claws 3a and 3b closer together, and
The diameter of the locking member 3 is reduced against its elastic force. As a result, the locking member 3 is inserted into the first engagement groove 13 as shown in FIG.
The whole thing is stored in 1. Therefore, male member 1 and female member 2
The lock is released, and the operator can handle the male member 1 relative to the female member 2.

Therefore, this quick connector allows quick piping and is highly reliable in piping.

In addition, in the quick connector of the above embodiment, the locking member 3
In this case, the outer circumferential surface side protrudes from the first engagement groove 131 when held in the male member 1, but the inner circumferential surface side protrudes from the second engagement groove 22 of the female member 2. You can also adopt what is retained. When a locking member that is held in the second engagement groove 22 of the female member 2 with its inner circumferential surface side protruding is adopted, the locking member is inserted into the second engagement groove 22 of the male member 1 when the locking member is inserted. The diameter is expanded by the tapered surface 13a, and the whole is accommodated in the second engagement groove 211.

Further, although the locking member 3 in the above embodiment has a square cross section, it is also effective to adopt a tapered one whose outer peripheral surface matches the guide surface 21a of the female member 2.

Furthermore, in the locking member 3 of the above embodiment, the jig 6 is used when reducing the diameter.
However, as shown in FIGS. 12 and 13, if the locking member 7 has protruding claws 7a and 7b that protrude in the axial direction, the operator can easily touch each of the protruding claws 7a and 7b. The diameter can be reduced by pinching with hands, and the male member 1 and female member 2 of the locking member 7 can be easily handled relative to each other.

Further, in the above embodiment, since the guide surface 21a is formed by bending the end of the mounting portion 21 inward, the side wall on the opening side of the second engagement groove 211 is shaped to protrude inwardly. This side wall can also be shaped to extend only in the centrifugal direction.

In addition, in the above embodiment, since the O-ring 4.5 is held by the male member 1, the O-ring 4.5 may be damaged due to relative insertion between the male member 1 and the female member 2. It goes without saying that the ring can be held on the base 22 of the female member 2.

Effects of the Invention] As detailed above, the quick connector of the present invention has the following effects:
Since it includes a male member having a flange with a first engagement groove and a notch opening, a female member having a receiving part with a second engagement groove, and a locking member, piping can be quickly installed. , reliability in piping can be improved.

[Brief explanation of drawings]

1 to 11 relate to the quick connector of the embodiment, and the first
2 is a partially sectional side view of the female member, FIG. 3 is a side view of the male member and the locking member, and FIG. 4 is a side view of the male member and the locking member. 5 is a partially sectional side view showing the state in the middle of connection, FIG. 6 is a front view of the state shown in FIG. 5, FIG. 7 is a partially sectional side view showing the completed connection, and FIG. A front view of the state shown in the figure, FIG. 9 is a partially sectional side view showing #l being removed, and FIG. 10 is a front view not showing #l being removed.
FIG. 11 is a partial sectional view of the state shown in FIG. 10. FIG. 12 and FIG. 13 relate to modified examples of the locking member, and the first
Figure 2 is a front view of the locking member, and Figure 13 is A-A in Figure 12.
FIG. FIG. 14 is a partially sectional side view showing a conventional quick connector. 1...Male member 13...7 lunge 131...
- First engagement groove 132... Notch opening 2... Female member 21... Receiving portion 211...
Second engagement groove 3.7...locking member

Claims (1)

[Claims] (1) It has a first engagement groove that protrudes from the outer peripheral surface of one end and has a ring-shaped recess at the top, and a side wall of the first engagement groove is cut out at the other end of the first engagement groove. a receiving portion having a circular male member having a flange with a notched opening; and a second engagement groove on the inner circumferential surface comprising a ring-shaped recess that faces the first engagement groove when the flange is inserted; a cylindrical female member having a substantially C-shape as a whole, the entire member being accommodated in the first engagement groove or the second engagement groove by operation, and a relative position between the male member and the female member; A lock made of an elastic material that locks the male member and the female member by having the inner circumferential surface side held in the first engaging groove and the outer circumferential surface side being held in the second engaging groove upon insertion. A quick connector characterized by comprising a member.