JP3006359B2 - Quick connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick connector having a male member and a female member for connecting a hose or a pipe for transferring fluids such as gasoline, oil, water and air, and more particularly to a locking member. The present invention relates to a quick connector having a simple structure.

[0002]

2. Description of the Related Art As a conventional quick connector, as shown in FIGS. 8 and 9 , a receiving cylinder portion 103 having a receiving hole 101 and holding holes 102 and 105 (two pairs each) opened in a wall portion is provided. A female member 100 at one end in the axial direction, and a ring-shaped projection 2 projecting in the centrifugal direction and having a tapered surface 201.
02 and a male member 200 having a fitting cylindrical portion 203, and a U member bent at a central portion 302 such that both end portions 301 face each other.
A locking member 300 having a U-shape is known (JP-A-58-225290).

When using the above-described quick connector, both ends 301 of the locking member 300 are held in the holding opening 10.
2 and 105, the fitting member 203 of the male member 200 is inserted into the receiving hole 101 with the locking member 300 held by the female member 100. The male member 200 includes the ring-shaped protrusion 20.
Both ends 301 of the locking member 300 are pushed and spread by elastic deformation by the second tapered surface 201 to enter. Then, when the ring-shaped protrusion 202 of the male member 200 exceeds the locking member 300, both ends 301 of the elastically recovered locking member 300 and the locking protrusion 202 are locked. Thus, the female member 100
And the male member 200 are connected.

Further, as another conventional quick connector, a locking member having a C-ring shape is housed in a female member to prevent the locking member from coming off due to interference or collision between the locking member and another member. One that has been prevented is known (JP-A-4-064689). As shown in FIG. 10 , the quick connector has a receiving opening 40 at one end in the axial direction.
A female member 400 having a cylindrical shape provided with a receiving cylinder portion 402 formed with a cylindrical member 1, a male member 500 having a cylindrical shape having a ring-shaped projection 501 protruding in the centrifugal direction and a fitting cylinder portion 502; A C-ring-shaped locking member 600 held in the receiving cylinder portion 402 of the member 400.

The locking member 600 is made of an elastic thin plate spring member, and is inserted from the receiving opening 401 of the female member 400 while being reduced in diameter, and is housed in the receiving cylinder portion 402. The locking member 600 has a C-ring-shaped tapered wall 601 whose diameter decreases toward the back of the female member 400 and can be expanded in the receiving cylinder portion 402. And the receiving cylinder part 4 of the female member 400
02 with the locking member 600 housed therein,
When the zero fitting cylinder portion 502 is inserted into the receiving opening 401, the ring-shaped protrusion 501 of the male member 500 expands the diameter of the tapered wall 601 of the locking member 600 by elastic deformation, and further passes over the locking member 600. As a result, one end 602 on the small diameter side of the tapered wall 601 of the elastically restored locking member 600 is locked with the ring-shaped projection 501 of the male member 500, and the other end 603 on the large diameter side is opened for receiving the female member 400. The female member 400 and the male member 500 are connected by abutting on the inner end surface of the 401.

[0006]

FIG. 8 and FIG.
In the conventional quick connector shown in FIG. 9 , when the female member 100 and the male member 200 are separated from each other, the central portion 302 is pulled while the both ends 301 of the locking member 300 are slightly widened, so that the locking member is pulled. 300 for holding mouth 10
2. Remove from 105. Thereafter, the female member 100 and the male member 200 are pulled in a direction away from each other to separate them. As described above, in order to separate the two members 100 and 200, the locking member 300 must be pulled out while the both end portions 301 are widened, so that the operation is troublesome and the locking member 300 is pulled out in the direction perpendicular to the axis. Therefore, there is a problem that a work space is required.

In the conventional quick connector shown in FIG. 10 , when the female member 100 and the male member 200 are separated from each other, a release tool (shown by a dashed line in FIG. 10 ) is used.
The taper wall 601 of the locking member 600 is expanded by inserting 700 into the receiving cylinder portion 402 from the receiving opening 401, and the one end 602 of the tapered wall 601 on the small diameter side and the ring-shaped protrusion 501 of the male member 500 are locked. Cancel. In this state, the female member 1
00 and the male member 200 are pulled apart from each other to separate them. Thus, one end 602 on the small diameter side of the locking member 600 is connected to the ring-shaped projection 50 of the male member 500.
In the case where the diameter is increased until the locking with the first diameter is released, the deformation resistance of the one end 602 on the small diameter side is the same as that of the one end 601 on the large diameter side when the large diameter side is reduced by the same amount of reduction and expansion. It becomes larger than the deformation resistance. Therefore, there is a problem that the operability when releasing the lock between the one end 602 on the small diameter side of the locking member 600 and the ring-shaped protrusion 501 of the male member 200 is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when separating a female member and a male member, an engagement between a large-diameter end of a tapered locking member having a C-shaped cross section and the female member. By providing a quick connector that releases locking and pulls out the locking member in the axial direction, it is possible to improve operability and separation workability when releasing the locking of the locking member. It is a technical problem to be solved.

[0009]

A quick connector according to the present invention for solving the above-mentioned problems has a larger diameter than the inner diameter at the other end in the axial direction.
A receiving cylinder with a storage chamber with a large inner diameter
First having a locking surface extending radially
The locking portion has a cylindrical female member provided on the receiving cylinder portion and a distal end.
A ring-shaped projection protruding in the centrifugal direction at a predetermined distance from
For joining the male member and the male member and the female member
A locking portion detachably held in the storage chamber of the female member.
A quick connector comprising a timber, said locking member
Is from the large diameter end at one axial end to the small diameter end at the other axial end.
Equipped with a tapered wall with an arc-shaped cross section that gradually decreases in diameter.
The small diameter end is smaller than the outer diameter of the ring-shaped protrusion.
And a tip of the male member in the receiving cylinder portion of the female member.
When the side is relatively inserted, the small-diameter end portion becomes the ring-shaped projection.
The diameter can be reduced and the diameter can be snapped.
A substantially C-shaped cylindrical main body that is elastically deformable in the
Projecting integrally from the outer surface of the large diameter end in the centrifugal direction,
A second engaging portion capable locking surface and the locking of the first locking portion, wherein
The main body portion extends integrally from the end face of the large diameter end portion in the axial direction.
A plurality of operation arms for reducing the diameter of the main body.
And operating each of the operation arms in the centripetal direction.
To reduce the diameter of the main body,
The stop member is detachable from the storage chamber of the female member .

[0010]

The operation of the quick connector of the present invention will be described together with the method of use. First, the main body portion of the locking member is inserted into the storage chamber of the female member from the small-diameter end side while reducing the diameter , and the first locking portion of the female member and the second locking portion of the locking member are engaged. The locking member is stored and engaged in the storage chamber of the female member. In this state, the male member is inserted into the locking member held in the storage chamber of the female member, and the ring-shaped projection of the male member is pressed against the inner surface of the tapered wall of the main body of the locking member.
The locking member is elastically deformed so as to be warped radially outward while increasing the diameter of the small-diameter end of the main body of the locking member. Then, when the male member is further inserted and the ring-shaped projection of the male member is located beyond the locking member and inward of the locking member , the main body of the locking member elastically deformed in the radially outward direction becomes itself. It is restored by the elastic force of. Thus, the ring-shaped projection of the male member and the small-diameter end of the locking member are engaged, and the male member is connected to the female member.

When the female member and the male member are separated from each other, the operation arm portion of the locking member is pressed by a finger or a release tool, and the large-diameter end portion of the main body of the locking member is pressed. more reducing its diameter side to release the engagement between the first engagement portion of the second engaging portion and the female member provided on the large diameter end portion side of the main body portion of the locking member. In this state, after pulling out only the locking member in the axial direction from the storage chamber of the female member, pull out the male member in the axial direction from the female member, or pull out the locking member and the male member simultaneously from the female member. Thereby, the female member and the male member can be separated very easily.

As described above, the female member and the male member can be separated by pulling out the locking member in the axial direction, so that the locking member is pulled out in the direction perpendicular to the axis.
Work space is reduced. In addition, the body of the locking member
Since the engagement between the first locking portion of the female member and the second locking portion of the locking member is released by reducing the diameter of the large- diameter end portion, the small-diameter end portion of the locking member is expanded. The deformation resistance of the locking member to obtain the same amount of contraction and expansion as compared to the case where the engagement between the ring-shaped projection of the male member and the small end of the locking member is released by Become smaller. Therefore, the operability when releasing the engagement of the locking member is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) A quick connector according to Embodiment 1 shown in FIGS. 1 to 6 has a female member 1 having a cylindrical shape and a male member 2 having a cylindrical shape.
And a locking member 3 arranged in the female member 2. In addition, the female member 1, the male member 2, and the locking member 3 are formed of synthetic resin.

As shown in FIGS. 1 to 3, the female member 1 has a large-diameter one end formed in the axial direction, a receiving end 10 formed on one axial end, and a storage chamber 11 formed on the inner peripheral side thereof. Shaped cylinder part 1
2 and a shaft part 13 formed integrally with the shaft end on the other side of the receiving cylinder part 12, and a hose insertion part formed integrally with the shaft part 13 at the other end in the axial direction. 14. A guide taper surface 10a for guiding a second locking portion (described later) 35 of the locking member 3 when the locking member 3 is inserted is formed on an inner end surface of the receiving opening 10.

The storage chamber 1 formed on the inner peripheral side of the receiving cylinder 12
Reference numeral 1 denotes a male member 2 in a state where the female member 1 and the male member 2 are connected.
The locking member 3 is housed between the first and second members, and has a large diameter so that the diameter of the locking member 3 can be reduced by a predetermined amount when the female member 1 and the male member 2 are separated. As can be understood from FIG. 3, the receiving cylinder portion 12 is formed with a pair of two opening windows 11a, 11a which are opened from both side surfaces except for a central portion, and each of the opening windows 11a, 11a is formed. A pair of first locking portions 15, 15 are provided on the side of the receiving opening 10 adjacent to the opening window 11a. In addition, opening of the opening window 11a on the first locking portion 15 side is performed.
The mouth end surface extends in the radial direction and the
It is a locking surface that can be locked with the two locking portions 35.

The inner end of the storage chamber 11 of the receiving cylinder 12 is formed as a step 12a. A ring groove 13a, a sealing surface 13b, a first step 13
c, a ring-shaped fitting surface 13d, and a second step surface 13e are formed. Then, the step 12a and the ring groove 13a
Holds a bush 16, and a seal surface 13b holds a seal ring 17 and a collar 18.

As shown in FIG. 1, the male member 2 includes a ring-shaped protrusion 20 protruding in a centrifugal direction at a predetermined distance from one end in the axial direction, and a fitting cylindrical portion 21 ahead of the ring-shaped protrusion 20.
And The outer diameter of the fitting cylindrical portion 21 of the male member 2 corresponds to the inner diameter of the fitting surface 13 d of the female member 1. In addition, a hose is connected to the end of the male member 2 on the opposite side of the fitting cylinder 21.

The locking member 3 is formed integrally from a resin which can be elastically deformed and has a C-shaped cross section. As shown in FIGS. A pair of arc-shaped tapered wall portions 32, 32, which are arranged to face each other and gradually decrease in diameter from one end in the axial direction toward the other end, a connecting portion 33 connecting the arc-shaped tapered wall portions 32, 32, and each arc-shaped portion. A pair of distal end wall portions 34, 34 provided on the distal end side of the tapered wall portions 32, 32 are disposed symmetrically facing each other and are displaced in a centrifugal direction from the outer peripheral surface of the large diameter end side of each of the arc-shaped tapered wall portions 32, 32. A pair of second locking portions 35, 35 protruding integrally with each other and symmetrically facing each other from the position where the second locking portions 35, 35 on the end surface of the C-ring-shaped large-diameter end portion 31 are formed. It has a pair of pressed parts 36, 36 protruding in the axial direction. Also, the ends of the arc-shaped tapered wall portions 32 on the small diameter side.
Are small diameter ends 32a, 32a. The large
Diameter end portion 31, each of the arc-shaped tapered wall portions 32, and the connecting portion 3
3. Each of the distal end wall portions 34 and each of the small diameter end portions 32a are
Equipped with a tapered wall with an arc-shaped cross section, and can be used
An elastically deformable substantially C-shaped cylindrical main body is formed. Also,
Each of the pressed parts 36 constitutes an operation arm part.

The C-ring-shaped large-diameter end portion 31 has an outer diameter that is substantially the same as the inner diameter of the female member storage chamber 11. The large-diameter side of each of the arc-shaped tapered wall portions 32 is integrally formed with the C-ring-shaped large-diameter end portion 31, and the C-shaped portion extends from the C-ring-shaped large-diameter end portion 31 toward the inside of the female member 1. Ring-shaped large diameter end 3
1 has a small diameter coaxially. Each arc-shaped tapered wall 3
The smaller diameter end portions 32a, 32a on the smaller diameter side of the male member 2 are smaller than the outer diameter of the ring-shaped protrusion 20 of the male member 2 and are substantially equal to the outer diameter of the fitting cylindrical portion 21 of the male member 2; It has a slightly smaller inside diameter. When the male member 2 is connected to the female member 1, the small-diameter ends 32 a of the pair of arc-shaped tapered wall portions 32, 32 engage with the ring-shaped protrusion 20 of the male member 2, and 2 is in contact with the outer peripheral surface.

The connecting portion 33 extends from the C-ring-shaped large-diameter end portion 31 to the small-diameter end portion 32a of the arc-shaped tapered wall portion 32 and connects the pair of arc-shaped tapered wall portions 32,32. The connecting portion 33 includes an arc-shaped top wall portion 33a that contacts the inner peripheral surface of the storage chamber 11 having substantially the same diameter as the outer diameter of the C-ring-shaped large-diameter end portion 31.
A pair of arc-shaped tapered wall portions 32 are bent from both ends in the circumferential direction of the arc-shaped top wall portion 33a and extend substantially parallel to each other.
And a pair of substantially triangular plate-shaped connecting walls 33b joined to one end in the circumferential direction. A notch 33c is formed at one end of the arc-shaped top wall portion 33a (on the small-diameter end portion 32a side of the arc-shaped tapered wall portion). When the locking member 3 is stored in the storage chamber 11 of the female member 1, the arc-shaped top wall portion 33 a is in contact with the inner peripheral surface of the storage chamber 11 of the female member 1.

A pair of tip walls 34, 34 of the locking member 3
Extends from both ends in the circumferential direction of the C-ring-shaped large-diameter end portion 31 to the small-diameter end portion 32a of the arc-shaped tapered wall portion 32, and each of the pair of arc-shaped tapered wall portions 32, 32 in the other circumferential direction. Side edge. The tip wall 34 has a substantially triangular shape, and is symmetrical to each other with respect to the connection wall 33b.
And extend in parallel. Then, the pair of distal end walls 34, 3
4 has a pair of edge contact portions 34a, 34a that contact the inner peripheral surface of the storage chamber 11 in a state where the locking member 3 is stored in the storage chamber 11 of the female member 1.

A pair of second locking portions 35 of the locking member 3
In the state where the locking member 3 is stored and engaged in the storage chamber 11 of the female member 1, the locking member 3 projects into the pair of opening windows 11 a of the female member 1, and the first locking portion 15 of the female member 1. 15 is engaged. The pair of pressed parts 36, 36 of the locking member 3 include connecting parts 36a, 36a extending in the axial direction, and flange parts 36b, 36b protruding in the centrifugal direction. Connection part 36
The outer peripheral surface of the female member 1 is substantially flush with the outer peripheral surface of the first locking portion 15 of the female member 1. It has become.

It is to be noted that the locking member 3 includes a pair of distal end wall portions 3.
4 and 34 are inserted into the storage chamber 11 from the receiving opening 10 of the female member 1 while being reduced in diameter in a direction approaching each other by elastic deformation, so that the locking member 3 itself is almost restored to its original diameter by its own elastic force. The first locking portions 15, 15 of the female member 1 and the second locking portions 35, 35 of the locking member 3 are engaged to form the C-ring-shaped large-diameter end portion 31, the arc-shaped top wall portion 33a, and the pair. Are held in a state where the outer peripheral surfaces of the edge contact portions 34a, 34a are pressed against the inner peripheral surface of the storage chamber 11. When the locking member 3 is inserted from the receiving opening 10, the diameter of the locking member 3 can be reduced while guiding the second locking portion 35 of the locking member 3 to the guide tapered surface 10a of the female member.

Hereinafter, the operation of the quick connector according to the present embodiment will be described together with the method of using the quick connector. First, with respect to the female member 1 holding the locking member 3 as described above, the fitting cylindrical portion 21 of the male member 2 is inserted into the storage chamber 11 of the female member 1 through the receiving opening 10 and the ring of the male member 2 is inserted. The protruding portion 20 is pressed against the inner surfaces of the pair of arc-shaped tapered walls 32, 32 of the locking member 3, and is elastically deformed so that the small-diameter ends of the pair of arc-shaped tapered walls 32, 32 warp in the radially outward direction. I do. At this time, the C-ring-shaped large-diameter end portion 31 of the locking member 3, the arc-shaped top wall portion 33a of the connecting portion 33, and the edge contact portions 34a, 34 of the pair of tip wall portions 34, 34.
a contacts the inner peripheral surface of the ring-shaped recess 11 a of the female member 1, and the locking member 3 is securely held concentrically in the ring-shaped recess 11 a of the female member 1. In addition, the locking member 3
The inward movement of the female member 1 is regulated by the flange portion 36b of the pressed portion 36 abutting on the opening end surface of the female member 1. Therefore, when the pair of arc-shaped tapered wall portions 32 of the locking member 3 are elastically deformed by the ring-shaped projection 20 of the male member 2, the locking member 3 does not shift in the radial direction or the axial direction. The workability of inserting the male member 2 into the female member 1 is extremely good.

Then, when the male member 2 is further inserted, the ring-shaped protrusion 20 of the male member 2 exceeds the locking member 3 and is inserted deeper than the locking member 3, and a pair of elastically deformed radially outwards. The arc-shaped tapered wall portions 32, 32 are restored by their own elastic force. As a result, the ring-shaped protrusion 20 of the male member 2 and the small-diameter end portion 32 of the pair of arc-shaped tapered wall portions 32 of the locking member 3.
The male member 2 is connected to the female member 1 by engaging a.

In the state where the female member 1 and the male member 2 are connected as described above, the locking member 3 for connecting the two members is substantially housed in the storage chamber 11 of the female member 1, and the female member 1 is connected to the shaft. Since the outer peripheral surface of the pressed portion 36 protruding in the direction is substantially flush with the outer peripheral surface of the receiving tube portion 12, there is little possibility that the locking member 3 collides with or interferes with another member. On the small-diameter end portion 32a side of the arc-shaped tapered wall portion 32 of the locking member 3, the small-diameter end portion 32a of the arc-shaped tapered wall portion 32 is regulated by the inner peripheral surface of the storage chamber 11 of the female member 1, respectively. Connection part 3
3 is sandwiched in the direction perpendicular to the axis by the connection wall portion 33b and the front end wall portion. For this reason, even if a large axial force is applied between the female member 1 and the male member 2 in a direction in which the female member 1 and the male member 2 are separated from each other, the locking member 3 remains at the male member at the small-diameter end of the arc-shaped tapered wall portion 32. The force acting in the axial direction from the second ring-shaped protrusion 20 can be sufficiently received, and buckling does not occur. Furthermore, the C-ring-shaped large-diameter end portion 31 of the locking member 3, the arc-shaped top wall portion 33a of the connecting portion 33, and the edge contact portions 34a, 34a of the pair of tip end walls 34, 34.
Are in contact with the inner peripheral surface of the storage chamber 11 of the female member 1, and each arc-shaped tapered wall portion 32 is connected to the connecting portion 33 as described above.
Is restricted in the direction perpendicular to the axis by the connecting wall portion 33b and the distal end wall portion 34, so that the locking member 3 can freely move or rattle in the direction perpendicular to the axis in the ring-shaped concave portion 11a of the female member 1. Absent.

Therefore, in the quick connector of the present embodiment, the female member 1 and the male member 2 can be firmly connected and held via the locking member 3. When the female member 1 and the male member 2 are separated from each other, the pair of flange portions 36b, 36b of the pressed portion 36 of the locking member 3 is pressed by fingers or the like in a direction approaching each other, so that the locking member 3 By reducing the diameter of one end of the female member 1, the second locking portions 35, 35 provided on the outer peripheral surface of the locking member 3 on the side of the C-ring large-diameter end 31 are reduced. The engagement with the first locking portions 15, 15 is released. In this state, after only the locking member 3 is pulled out from the storage chamber 11 of the female member 1 in the axial direction, the male member 2 is pulled out from the female member 1 in the axial direction, or the locking member 3 is pulled out.
By simultaneously withdrawing the male member 2 from the female member 1 in the axial direction, the female member 1 and the male member 2 can be separated very easily.

As described above, since the female member 1 and the male member 2 can be separated by pulling out the locking member 3 in the axial direction, the locking member 3 is pulled out in the direction perpendicular to the axis. Work space is reduced, and separation workability is improved. In addition, the engagement between the first locking portion 15 of the female member 1 and the second locking portion 35 of the locking member 3 is released by reducing the diameter of one end of the locking member 3 having a large diameter. As compared with the case where the diameter of the small-diameter end portion 32 side of the locking member 3 is increased and the engagement between the ring-shaped protrusion 20 of the male member 2 and the small-diameter end portion 32a of the locking member 3 is released. The deformation resistance of the locking member 3 for obtaining the amount of contraction / expansion becomes small. For this reason, the operability when releasing the engagement of the locking member 3 is improved.

In the quick connector in which the male member 2 and the female member 1 are connected, as shown in FIG. 3, the seal at the boundary between the male member 2 and the female member 1 is maintained by the seal ring 17, and The fluid is transferred via the male member 2 and the cylindrical female member 1. (Other Embodiments) The quick connector according to the present embodiment is the same as the first embodiment except that the shape of the locking member is changed.

As shown in FIG. 7, this locking member 3 is different from the locking member 3 of the first embodiment in that the flange 36b is eliminated and a pair of pressed portions is provided on the end face of each connecting portion 36a. Pressed holes 36c, 36c are formed, and the other configuration is the same as that of the locking member 3 of the first embodiment. In the quick connector according to the present embodiment, when the female member 1 and the male member 2 are separated, each end of the jig is connected to a pair of the locking members 3 using a tweezer-shaped jig (not shown). And a pair of pressed holes 3
6c and 36c are pressed in a direction approaching each other to reduce the diameter of one end of the locking member 3 having a large diameter, so that the second locking portions 35 and 35 of the locking member 3 and the female member 1 The engagement with the first locking portions 15, 15 is released. Other functions and effects are the same as those of the first embodiment.

[0031]

[0032]

As described above in detail, in the quick connector of the present invention, the female member and the male member can be separated by pulling out the locking member in the axial direction. The work space becomes smaller and the separation workability is improved as compared with the case where the sheet is pulled out. Further, since the engagement between the first locking portion of the female member and the second locking portion of the locking member is released by reducing the diameter of one end of the locking member having a large diameter, the deformation of the locking member is reduced. The resistance is small, and the operability when releasing the engagement of the locking member is improved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing an overall configuration of a quick connector according to a first embodiment.

FIG. 2 is a partial cross-sectional side view of the female member according to the first embodiment.

FIG. 3 is a front view of a female member according to the first embodiment.

FIG. 4 is a perspective view of a locking member according to the first embodiment.

FIG. 5 is a front view of a locking member according to the first embodiment.

FIG. 6 is a sectional view of the locking member taken along line AA of FIG. 5;

FIG. 7 is a perspective view of a locking member according to another embodiment.

FIG. 8 is an exploded perspective view of a conventional quick connector.

FIG. 9 is a sectional view of the conventional quick connector.

FIG. 10 is a partial sectional side view of another conventional quick connector.
FIG.

[Explanation of symbols]

1 is a female member, 11 is a storage chamber, 15 is a first locking portion, 2 is a male member, 20 is a ring-shaped protrusion, 3 is a locking member, 32 is an arc-shaped tapered wall portion, 32a is a small-diameter end portion, 36 is a pressed portion (operation
Arm portion) and 36c are pressed holes.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-34292 (JP, A) JP-A-2-44194 (JP, U) JP-A-2-103595 (JP, U) JP-A-4-103 64689 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 37/12

Claims (1)

(57) [Claims] 1. An inner diameter larger than the inner diameter at the other end in the axial direction.
With a receiving cylinder part having an enclosed storage chamber at one end in the axial direction.
A first locking portion having a locking surface extending in a radial direction
A cylindrical female member provided on the cylindrical portion, and a ring-shaped protruding in the centrifugal direction at a predetermined distance from the tip
A male member having a protrusion, and a female member for coupling the male member and the female member.
A quill comprising a locking member detachably held in a storage room.
Wherein the locking member extends from the large-diameter end at one axial end to the small-diameter end at the other axial end.
A tapered wall portion having an arc-shaped cross section gradually reduced in diameter.
The small-diameter end has an inner diameter smaller than the outer diameter of the ring-shaped protrusion.
And the tip side of the male member is placed in the receiving cylinder portion of the female member.
When inserted oppositely, the small-diameter end is
In the radial direction and the radial direction,
A substantially C-shaped cylindrical main body that is sexually deformable, and integrally formed in a centrifugal direction from an outer surface of the large-diameter end of the main body.
A second engaging member which is projected and is engageable with the engaging surface of the first engaging portion;
A stop portion and an axially extending unitarily extending from an end surface of the large diameter end portion of the main body portion.
And a plurality of operation arms for reducing the diameter of the main body.
And operating each of the operating arms in the centripetal direction to move the main body.
The female member is connected to the locking member by reducing the diameter.
Quick connector that can be attached to and detached from the storage room .