JPH1050407A - Quick connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quick connector, wherein a joint state is more stable than in the past even if force toward extraction acts on a male member. SOLUTION: An inner circumferential area 4 of a female member 1 is adapted to be able to receive an engagement part 6 of a male member 2 via a pair of operation parts 3, and each pair of operation parts 3 has a part crossing a receiving locus of the engagement part 6 of the male member 2 from the opposite end direction of the inner circumferential area 4 of the female member 1. Further, when the male member 2 is attached/detached, the pair of operation parts 3 are displaced in the opposite end direction to each other, so as to be evacuated from joint positions where they each cross the receiving locus of the engagement part 6 of the male member 2, and engagement of the male member 2 with the engagement part 6 is released.

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 A quick connector for inserting a male member into a female member and detachably connecting the male member to the female member may have the following structure, for example.

[0003] As shown in FIGS. 8 to 10, in this quick connector, an inner peripheral region 31 of a female member 30 is capable of receiving an engaging portion 34 of a male member 33 via a ring-shaped operating member 32. I have.

The ring-shaped operation member 32 is usually located at a coupling position eccentric from the axis of the female member 30. However, when the male member 33 is attached and detached, the ring-shaped operation member 32 is substantially aligned with the axis of the female member 30. Displace to the position where male coaxial members can be received (downward in FIG. 9),
The engagement of the male member 33 with the engagement portion 34 is released, and the male member 33 can receive the male member 33.

However, when a force in the pull-out direction acts on the male member 33, the ring-shaped operation member 32 moves in the eccentric direction (upward in FIG. 9).
, The ring-shaped operation member 32 and the engagement portion 34 of the male member 33 are engaged in only one side region (the lower portion of the engagement portion of the male member in FIG. 10). Therefore, there is a problem that the connection state is unstable.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention
An object of the present invention is to provide a quick connector in which the connection state is more stable even if a pull-out direction force acts on the 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 is capable of receiving the engaging portion of the male member via a pair of operating portions, and the pair of operating portions are respectively provided on the inner peripheral surface of the female member. A portion that intersects with the receiving locus of the engaging portion of the male member from the opposite end direction of the region, and when the male member is attached or detached, the pair of operating portions interlock with the receiving locus of the engaging portion of the male member. The male members are displaced in the opposite end directions so as to withdraw from the position, and the engagement of the male member with the engagement portion is released.

According to this quick connector, each of the pair of operating portions intersects with the receiving locus of the engaging portion of the male member from the opposite end direction of the inner peripheral region of the female member, so that a force in the pulling direction acts on the male member. At this time, the operating member and the engaging portion of the male member are engaged from both sides in the opposite end direction of the inner peripheral region of the female member. Therefore, the connection state is more stable than the conventional one that engages only in one side region.

When the male member is attached or detached, the pair of operating portions are displaced in mutually opposite directions so as to retreat from a connecting position intersecting the receiving locus of the engaging portion of the male member. The engagement with the engagement portion is released.

The pair of operating portions may be separate from the female member, and the operating portions may be locked in a locking area of a peripheral guide surface in an inner peripheral region of the female member.

Each of the pair of operating portions has an elastic portion, and the operating portion normally moves along the receiving locus of the engaging portion of the male member from the opposite end direction of the inner peripheral region of the female member by the action of each elastic portion. They can also cross.

When the male member is attached or detached, the pair of operating portions are moved in opposite directions to each other so as to be retracted from a connecting position intersecting the receiving locus of the engaging portion of the male member against the action of the elastic portion. It can also be displaced.

[0014]

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

As shown in FIGS. 1 to 7, the quick connector according to this embodiment comprises a female member 1, a male member 2, and a pair of operating portions 3.

As shown in FIGS. 1 to 5, the inner peripheral region 4 of the female member 1 is connected to the slit 5 formed in the peripheral side surface of the female member 1 through a pair of operating portions 3 inserted from opposite directions, as shown in FIG. It is possible to receive a flange-shaped engaging portion 6 that protrudes outward from the outer surface of the male member 2 as shown. Male member 2 includes
An O-ring 7 is interposed between the female member 1.

As shown in FIG. 5, the pair of operating parts 3 are formed as members separate from the female member 1 by an elastic material, and the vicinity of the end of the leg 8 is bifurcated in cross section. In addition, each of the elastic portions 9 integrally has elastic sides on the outside of the bifurcated leg 8 having a substantially F-shaped cross section.

The pair of operating portions 3 are formed by projecting portions 11 having a triangular cross section formed on the outer surface of the oblique side having a U-shaped cross section.
Locking area formed on the peripheral guide surface 12 of the inner peripheral area 4
13 to be locked. This prevents the operation section 3 from being accidentally pulled out of the female member 1.

As shown in FIGS. 6 and 7, the pair of operating portions 3 are respectively engaged with the engaging portions of the male member 2 by pressing the respective elastic portions 9 from opposite ends of the peripheral edge of the female member 1. 6 has a portion 14 of the inner end region of the bifurcated leg 8 having a substantially F-shaped cross section that intersects the receiving locus 6 (the region in the axial direction passing through the annular region X in FIGS. 3, 6, and 7). .

As shown in FIG. 7, when the male member 2 is attached or detached, the pair of operating portions 3 are respectively moved to retreat from a connection position intersecting the receiving locus of the engaging portion 6 of the male member 2. By pressing the pressing operation side 15 of the F-shaped cross section of the head with fingers (not shown) from both sides against the action of the elastic part 9 and displacing them in opposite end directions, the male member 2
Is disengaged from the engaging portion 6.

Next, the use state of the quick connector of this embodiment will be described. When the male member 2 is attached or detached, the pair of operating portions 3 are displaced in opposite directions so as to be retracted from a connection position intersecting the receiving locus of the engaging portion 6 of the male member 2. The engagement with the joint 6 is released.

According to this quick connector, the pair of operating portions 3 intersect with the receiving locus of the engaging portion 6 of the male member 2 from the opposite end direction of the inner peripheral region 4 of the female member 1. When a force in the pull-out direction is applied, the operating portion 3 and the engaging portion 6 of the male member 2 are engaged from both sides of the inner peripheral region 4 of the female member 1 in the opposite end direction. Therefore, there is an advantage that the connection state is more stable than that of the related art in which only one side area is engaged.

Further, as can be seen from FIG. 10, in the prior art, the ring-shaped operating member 32 is always pressed so as to be displaced in a fixed direction (downward in the drawing) during operation.
A force is applied only in one direction to the O-ring 35 interposed between the male member 33 and the female member 30.
There was a problem that the deformation was biased to 35,
According to this embodiment, as shown in FIG. 1, a force is exerted on the male member 2 from both sides in the opposite end direction.
The ring 7 has the advantage that no biased force is applied.

[0024]

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

Since the operating member and the engaging portion of the male member are engaged from both sides in the opposite end direction of the inner peripheral region of the female member, even if a force in the pulling direction acts on the male member, it is connected more than before. It is possible to provide a quick connector whose state is stable.

[Brief description of the drawings]

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

FIG. 2 is an axial half-sectional view of a female member of the quick connector shown in FIG. 1;

FIG. 3 is a section III-II of a female member of the quick connector shown in FIG. 2;
The arrow view of the I line section.

FIG. 4 is an axial half-sectional view of a male member of the quick connector shown in FIG. 1;

FIG. 5 is an exploded perspective view showing a state in which a male member is not connected, with a cross section taken along line VV of the quick connector of FIG. 1;

FIG. 6 is an arrow view of a cross section taken along line VV of the quick connector of FIG. 1;

FIG. 7 is a cross-sectional view taken along line VV of the quick connector of FIG. 1 in a state in which the engagement of the male member with the engagement portion by the operation portion is released.

FIG. 8 is an axial sectional view showing a state where a ring-shaped operation member is inserted into a female member of a conventional quick connector.

FIG. 9 is an arrow view of a cross section taken along line IX-IX of the quick connector of FIG. 8;

FIG. 10 is a cross-sectional view of the quick connector of FIG. 8 taken along line IX-IX, showing a male member and a female member connected by a ring-shaped operation member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Female member 2 Male member 3 Operation part 4 Inner peripheral area 6 Engagement part 9 Elastic part 12 Peripheral guide surface 13 Locking area

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 portions, and each of the pair of operating portions is from the opposite end direction of the inner peripheral region of the female member. The male member has a portion crossing the receiving locus of the engaging portion. When the male member is attached or detached, the pair of operating portions are mutually moved to retreat from a connecting position crossing the receiving locus of the male member engaging portion. A quick connector which is displaced in the opposite end direction and releases the engagement of the male member with the engagement portion. 2. The method according to claim 1, wherein the pair of operating portions are separate from the female member, and the operating portions are locked in a locking area of a peripheral guide surface of an inner peripheral region of the female member. Quick
connector. 3. A pair of operating portions each having an elastic portion, and the operating portion is normally adapted to receive the engaging portion of the male member from the opposite end direction of the inner peripheral region of the female member by the action of each elastic portion. 3. The quick connector according to claim 1, wherein the quick connector intersects the locus. 4. When mounting and dismounting the male member, the pair of operating portions are moved in opposite directions so as to withdraw from the connecting position intersecting the receiving locus of the engaging portion of the male member against the action of the elastic portion. 4. The quick connector according to claim 1, wherein the quick connector is displaced.