JPH11141776A - Quick connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quick connector which can further enhance the degree of unremovability of a male member. SOLUTION: In a quick connector, the inner peripheral area of a female member 3 can accept the engaging part 5 of a male member 2 via a pair of control members 4, and the pair of control members 4 have respective parts 6 crossing the locus of acceptance of the engaging part 5 of the male member 2. To connect or disconnect the male member 2, the pair of control members 4 are rotated and displaced toward the outer periphery of the quick connector so as to move back from connecting positions crossing the locus of acceptance of the engaging part 5 of the male member 2, thus disengaging the control members 4 from the engaging part 5 of the male member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick connector for removably connecting a male member to a female member by inserting the male member into the female member.

[0002]

2. Description of the Related Art The present inventors have developed in-house a quick connector for inserting a male member into a female member and detachably connecting the male member to the female member.

As shown in FIGS. 7 and 8, in this quick connector, the inner peripheral region of the female member 20 has a pair of operating members.
The engagement portion 5 of the male member 2 (refer to FIG. 6) can be received through 21. The operating member 21 includes the engaging portion 5 of the male member 2.
Has a portion 22 that intersects the receiving locus of

When the male member 2 is attached or detached, the pair of operating members 21 are pressed toward the opposite end so as to be retracted from a connection position intersecting the receiving locus of the engaging portion 5 of the male member 2. By displacing, the engagement of the operation member 21 with the engagement portion 5 of the male member 2 is released.

[0005] The degree of difficulty in removing the male member 2 is as follows.
For example, the operation member 21 depends on the size of the area of the portion 22 that intersects the receiving locus of the engaging portion 5 of the male member 2.
There is a demand to increase the degree of difficulty in slipping out.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention
An object of the present invention is to provide a quick connector that can increase the degree of difficulty in removing a male member.

[0007]

In order to solve the above-mentioned problems, the present invention employs the following technical means.

In the quick connector according to the present invention, the inner peripheral region of the female member can receive the engaging portion of the male member via the pair of operating members, and the pair of operating members are engaged with the engaging portion of the male member. And a pair of operating members, when the male member is attached or detached, turned in the outer peripheral direction to retreat from the connection position intersecting the receiving locus of the engaging portion of the male member. The moving member is displaced, and the engagement of the operating member with the engaging portion of the male member is released.

According to the quick connector of the present invention,
At the time of attaching and detaching the male member, the pair of operating members are configured to be rotationally displaced in the outer peripheral direction so as to retreat from the connection position intersecting the receiving locus of the engaging portion of the male member. Rather than the case where the operating member is pressed toward the opposite end and displaced, the area of the area on both sides,
The area of the portion where the operating member intersects the receiving locus of the engaging portion of the male member can be increased.

[0010] The pair of operation members may be arranged from opposite ends. With this configuration, the male member can be attached and detached by a simple operation of pushing the operating member with one hand from both sides of the quick connector, so that the operability is extremely excellent.

The operating member has an elastic piece for connection and an elastic piece for guiding at the time of attachment / detachment, and a state in which the operating member crosses the receiving locus of the engaging portion of the male member is maintained by the urging action of each elastic piece. You can also make it. According to this structure, the simple structure of the connecting elastic piece and the attaching / detaching elastic piece makes it possible to suitably maintain a state in which the operating member crosses the receiving locus of the engaging portion of the male member.

When the male member is attached or detached, the operating member is retracted from the coupling position crossing the receiving locus of the male member against the urging action of the connecting elastic piece and the attaching / detaching elastic piece. It can also be displaced. With this configuration, the operation member can be retracted from the connection position intersecting the receiving locus of the male member with a simple structure and a simple operation.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 6, a quick connector according to this embodiment comprises a metal male member 2 having a fluid flow hole 1 inward, a synthetic resin female member 3 and a pair. And an operation member 4.

The inner peripheral region of the female member 3 includes a pair of operating members 4
Through this, it is possible to receive the flange-shaped engaging portion 5 (see FIG. 6) of the male member 2. The pair of operation members 4 have substantially “L” -shaped portions 6 (see FIG. 3) intersecting the receiving locus of the flange-shaped engagement portion 5 of the male member 2, and are arranged from opposite ends. It is designed to be installed.

The operating member 4 has a connecting elastic piece 7 and an attaching / detaching elastic piece 8. The operating member 4 is urged by the urging action of each elastic piece that comes into contact with the inner peripheral wall 9 of the female member 3.
Is adapted to maintain the state of crossing the receiving locus of the flange-shaped engaging portion 5 of the male member 2.

On the other hand, when the male member 2 is attached or detached, the pair of operating members 4 move outward in order to retreat from a connection position intersecting the receiving locus of the flange-shaped engaging portion 5 of the male member 2. The operation member 4 is displaced by rotation, and the engagement of the operation member 4 with the flange-shaped engagement portion 5 of the male member 2 is released.

That is, the operating member 4 is displaced so as to retreat from the connecting position crossing the receiving locus of the male member 2 against the urging action of the connecting elastic piece 7 and the attaching / detaching elastic piece 8. I am trying to be.

Next, the use state of the quick connector of this embodiment will be described. According to the quick connector, when the male member 2 is attached or detached, the pair of operation members 4 are moved in the outer circumferential direction so as to be retracted from the connection positions intersecting the receiving locus of the flange-shaped engaging portion 5 of the male member 2. When the pair of operating members 4 is pressed toward the opposite end direction to be displaced straight (FIG. 7).
Operating member 4 is the flange of the male member 2 in the direction of insertion of the operating member 4 (see FIG. 3, the area of the substantially “L” -shaped leg). The area of the portion 6 that intersects the receiving locus of the engagement portion 5 can be increased. Therefore, there is an advantage that the degree of difficulty in removing the male member 2 can be further increased.

Further, since the pair of operating members 4 are arranged from opposite ends, the attaching and detaching of the male member 2 can be performed by quick
The operation can be performed by a simple operation of pushing in the pair of operation members 4 from both sides of the connector with one hand and pulling out the male member 2 with the other hand, which has an advantage of extremely excellent operability.

Further, the simple structure of the connecting elastic piece 7 and the attaching / detaching elastic piece 8 allows the operating member 4 to be connected to the male member 2.
Can be suitably maintained in a state of intersecting the receiving locus of the flange-shaped engaging portion 5 with a simple structure and a simple operation.
There is an advantage that the operation member 4 can be retracted from the connection position crossing the receiving locus of the male member 2.

In addition, when the male member 2 is attached or detached, the pair of operating members 4 are rotated and displaced, so that the operating member 4 is rotated and displaced in the outer peripheral direction (see FIG. 3). Has the advantage that the length in the pushing direction can be set shorter than the conventional quick connector (see FIG. 7).

[0023]

The present invention is configured as described above and has the following effects.

[0024] It is possible to provide a quick connector which can increase the area of the portion where the operating member intersects the locus of reception of the engaging portion of the male member, so that the degree of difficulty of removing the male member can be further increased. Can be.

[Brief description of the drawings]

FIG. 1 is an axial partial cross-sectional view showing an O-ring of a female member, a male member, and an operation member in cross-section for explaining an embodiment of a quick connector of the present invention.

FIG. 2 is an exploded perspective view of the quick connector of FIG. 1 taken along a line II-II and showing a state where a male member is not connected.

FIG. 3 is a sectional view taken along line II-II of the quick connector of FIG. 1;

FIG. 4 is a sectional view taken along line II-II of the quick connector of FIG. 1 in a state in which the male member is disengaged from the engaging portion by the operating member.

FIG. 5 is an axial half-sectional view of a female member of the quick connector of FIG. 1;

FIG. 6 is an axial half sectional view of a male member of the quick connector.

FIG. 7 is a cross-sectional view illustrating a state in which a male member and a female member are connected in a conventional quick connector.

FIG. 8 is a cross-sectional view illustrating a state in which the engagement of the male member with the engagement portion by the operation member is released in the conventional quick connector.

[Explanation of symbols]

 2 Male member 3 Female member 4 Operation member 5 Engagement part 6 Intersecting part 7 Elastic piece for connection 8 Elastic piece for guiding at attachment / detachment

Claims (4)

[Claims] 1. An inner peripheral region of a female member is capable of receiving an engaging portion of a male member via a pair of operating members, and the pair of operating members intersect with a receiving locus of the engaging portion of the male member. When the male member is attached or detached, the pair of operating members are respectively displaced in the outer peripheral direction so as to retreat from a connection position crossing the receiving locus of the engaging portion of the male member. A quick connector characterized in that the operation member is disengaged from the engagement portion of the member. 2. The quick connector according to claim 1, wherein said pair of operating members are arranged from opposite ends. 3. The operating member has an elastic piece for connection and an elastic piece for guiding at the time of attachment / detachment, and the operating member intersects with the receiving locus of the engaging portion of the male member by the urging action of each elastic piece. The quick connector of claim 1, wherein the quick connector is maintained. 4. When the male member is attached / detached, the operating member is retracted from the coupling position crossing the receiving locus of the male member against the urging action of the connecting elastic piece and the attaching / detaching elastic piece. 2. The quick connector according to claim 1, wherein the quick connector is displaced.