JP2573459Y2 - 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 connector for piping for connecting hoses and pipes for transferring fluids such as gasoline, oil, water and air.

[0002]

2. Description of the Related Art Conventionally, as a connector for piping, as shown in FIGS. 17 and 18, a convex locking portion 101 extending in a ring shape and an insertion end extending forward from the locking portion 101. Cylindrical male member 100 having a portion 102 and a receiving opening 2
01, a female member 200 having a receiving hole 202 provided with
Locking claw member 205 provided with the female member 200 and the window 2 of the female member 200.
07 and a substantially C-shaped detector 300 disposed so as to be displaceable radially outward (Japanese Utility Model Publication No. 3-17115). The locking part 101 is a male member 1
L project outwardly from the outer peripheral surface of L by a distance L.

[0003] In this connector, when used, the male member 1
00 is inserted from the receiving opening 201 into the female member 20.
0, so that the male member 100
When the locking portion 101 of the locking member 101 enters deeper than the claw portion 204 of the locking claw member 205 and reaches the stopper portion 208, the locking portion 10
1 is locked by the claw portion 204 of the locking claw member 205, whereby the male member 100 and the female member 200 are connected. In the state of being connected in this manner, as shown in FIGS. 17 and 18, the detection body 30 is
The pressed surface 301 of 0 is pressed, and the detection body 300 is pushed outward in the radial direction, that is, in the direction of the arrow Y1 to be displaced. With the displacement, the detection body 300 is detached from the window 207. The female member 200 and the male member 100
It is visually recognized that the connection between the male member 100 and the female member 200 is completely performed, thereby avoiding a problem due to insufficient connection between the male member 100 and the female member 200.

[0004]

By the way, in the above-described connector, as described above, the claw portion 2 of the locking claw member 205 is provided.
The detection body 300 is detached outward in the radial direction by the locking portion 101 locked to the cover 04. This locking part 101
The projection amount L, shape, and the like of the projection are naturally restricted in order to secure good engagement with the claw portion 204. In that relation, the displacement amount of the detection body 300 is also limited by the protrusion amount L of the locking portion 101,
The displacement of the detection body 300 cannot be larger than L. Further, particularly in the connector described above, the engaging portion 10 1, the relationship to push the detecting member 300 radially outwardly, must always be convex projecting radially outward. Temporarily locking part 1
If 0 1 is not a convex shape but a concave shape that is depressed in the radial direction, the detection body 300 cannot be pushed up in the radial direction outward,
It becomes impossible for the detection body 300 to detect the connection between the female member 200 and the male member 100. Therefore, in this connector, the locking portion cannot be made concave.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to push up a detection body with a projection different from a locking portion of a male member locked by a claw portion of a locking claw member. An object of the present invention is to provide a connector in which the structure of the locking portion can be made concave or convex, and the amount of displacement of the detection body is not affected by the shape and structure of the locking portion.

[0006]

SUMMARY OF THE INVENTION A connector according to the present invention has a concave or convex locking portion extending in a ring shape, an insertion end extending forwardly of the locking portion, and a connector having a lower end than the locking portion. A male male member having a cylindrical male member having a push-out projection projecting radially outwardly and located rearward by a predetermined distance, a female member having a receiving hole provided with a receiving opening into which the insertion end of the male member is inserted, and a male member holding means for holding and connects the female member and, Izu holding means or the female member
Re or is arranged to be movable radially outwardly to one, and extruding the insertion end of the male member from the receiving opening when inserted into the receiving borehole
It includes a protrusion that abuts the pressing surface at the inner end, when the male and female members are coupled, is composed of a detection member Ru pushed radially outwardly by the extrusion projection of the male member, the detection Body cover
Insertion end when connecting as the pressing surface goes inward in the radial direction
It is characterized by being tapered so as to be on the side of the part .

[0007]

The operation of the quick connector according to the present invention will be described together with its use. First, the insertion end of the male member is inserted into the receiving hole from the receiving opening of the female member. Then, the male member and the female member are joined by the holding means. Upon coupling, the detection body is pushed outward in the radial direction by the extrusion protrusion of the male member and displaced. The coupling between the female member and the male member is visually recognized based on the displacement amount of the detector.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the connector according to the present invention will be described below with reference to FIGS. 1 and 2 show a state in which the male member and the female member are joined, FIGS. 3 to 5 show components, and FIGS. 6 to 9 show a state in the middle of joining. (Configuration of Example) In this example, the male member 1 is made of a metal pipe as shown in FIGS. 1 and 3, and has an insertion end portion 10 and a ring shape formed on the outer peripheral surface of the insertion end portion 10. It has a concave locking portion 11 and a ring-shaped extrusion protrusion 13 formed behind the ring-shaped locking portion 11. The outer peripheral surface of the extrusion protrusion 13 is an arc surface 1
3a. Note that a guide portion 10a is formed at the tip of the insertion end portion 10 to facilitate insertion.

The female member 2 is shown in FIG. Female member 2
Includes a cylindrical metal or resin first socket portion 20 having a screw portion 20e and a cylindrical metal or resin second socket portion 22 having a screw portion 22e. By screwing the screw portion 22e and the screw portion 20e, the first socket portion 20 and the second socket portion 22 are detachably connected to each other with the resin-made bush 27 in a ring shape being held therebetween. I have. A receiving opening 24 having a circular shape is formed at one end of the first socket portion 20. First
The socket portion 20 has a receiving hole 23 a communicating with the receiving opening 24.
And a ring-shaped first inner peripheral surface 23 that defines As shown in FIG. 4, the first inner peripheral surface 23 has a regulating surface 23c having an inner diameter larger than the inner diameter of the receiving opening 24, and an inner diameter larger than the inner diameter of the regulating surface 23c. Open inner peripheral surface 23d,
Tapered expanding surface 23f and regulating surface 2 along the direction perpendicular to the axis
3e.

In the second socket portion 22, a ring-shaped seal inner peripheral surface 22f and a second inner peripheral surface 22g are formed coaxially. Rubber O-rings 28a and 28 as ring seal portions are provided in the space defined by the seal inner peripheral surface 22f.
(b) A ring-shaped collar 29 made of resin is fitted substantially coaxially. The second socket portion 22 has a mushroom-shaped seal groove 22i.

The locking claw member 3 as the holding means will be described with reference to FIGS. The locking claw member 3 is made of resin, and includes a cylindrical portion 30a having a central hole 30h and a flange portion 30.
, An arm 31, a claw 32, and a stopper 33. The flange portion 30 extends in a ring shape in the centrifugal direction.
A notch 3 having an arc-shaped bottom surface 37c is formed in the flange portion 30.
7 are formed. A plurality of arms 31 extend in the axial direction from the cylinder 30a. The claw portion 32 is provided at the tip of the arm portion 31 and is provided in a radially inward direction. The stopper projection 33 is formed integrally with each claw portion 32, protrudes radially outward from each claw portion 32, and has a vertical surface 33c.
With.

As shown in FIGS. 10 and 11, the detector 6 is
It has an engagement protrusion 60, a pressed surface 61, and an abutment surface 62. The engagement protrusion 60 of the detector 6 is inserted into the groove 37a of the notch 37 of the flange portion 30 of the locking claw member 3 in the direction of arrow Y2. , The detection body 6 is mounted on the flange portion 30 of the locking claw member 3 so as to be displaceable in the radial direction, that is, in the directions of arrows Y1 and Y2. The area occupied by the detector 6 is considerably smaller than the area occupied by the flange 30. As shown in FIG.
In a state where the member 2 and the male member 1 are connected, the pressed surface 61 inserts the male member 1 toward the radially inward side.
It is tapered and inclined so as to be on the entry end 10 side, and the front surface of the pressed surface 61 is formed in an arc shape as shown in FIG.

As shown in FIG. 1, the spring 4 is a metal coil spring, and is interposed between the first socket portion 20 and the flange portion 30 of the locking claw member 3. As can be understood from FIG. 4, before the male member 1 and the female member 2 are joined,
The spring 4 urges the flange portion 30 of the locking claw member 3 along the axial direction, and locks the stopper projection 33 of the locking claw member 3 on the regulating surface 23e.

(Operation of Embodiment) A case where the quick connector of this embodiment is used will be described together with its operation. First, the case where the female member 2 is assembled will be described. O-rings 28a and 28b and collar-2 are provided on the seal inner peripheral surface 22f of the second socket portion 22 of the female member 2.
The first socket 20 and the second socket 22 are connected by fitting the screw portions 20e and 22e with the 9 fitted.
At this time, as shown in FIG.
7 is in contact with or close to the bottom surface 37c.

Next, the case where the female member 2 and the male member 1 are connected will be described. In this case, the locking claw member 3 is retracted in the direction of arrow X1 with a fingertip or a jig, or the insertion end 10 is forcibly pressed into the receiving opening 24.
Thereby, the insertion end 10 is moved from the receiving opening 24 to the receiving hole 23a.
And is inserted against the spring 4. Then, the insertion end 10
As shown in FIG.
Is pressed and bent radially outward by the outer peripheral surface of the insertion end portion 10, and the claw portion 32 escapes to the open inner peripheral surface 23d side. Further FIG.
As the insertion operation proceeds as shown in FIG. 7 and the ring-shaped locking portion 11 of the insertion end 10 reaches the claw portion 32, the ring-shaped locking portion 1
1 and the claw portion 32 are locked, and the arm portion 31 and the claw portion 32 are restored in the radially inward direction. In this state, the spring force of the spring 4 is
0, the flange portion 30 of the locking claw member 3 is pressed in the direction of arrow X2.
As shown in (1), the retaining projection 33 of the locking claw member 3 is pressed against the regulating surface 23e of the first socket portion 20, and the axial movement of the retaining projection 33 is regulated. The stopper projection 33 is surrounded by the regulating surface 23c, and the movement in the direction perpendicular to the axis is regulated.

As described above, the stopper 33 is restricted in the direction perpendicular to the axis and in the axial direction.
Consequently, the locking claw member 3 does not come off from the first socket portion 20, and the locking between the ring-shaped locking portion 11 of the male member 1 and the claw portion 32 of the locking claw member 3 is also ensured. In this way, male member 1
In the state in which the male member 1 is connected to the female member 2, as shown in FIG. 1, the pushing protrusion 13 of the male member 1 hits the pressed surface 61 of the detector 6, and the detector 6 moves outward in the radial direction, It is pushed out and displaced. Thereby, it is visually recognized that the connection between the male member 1 and the female member 2 is normal. If the coupling between the male member 1 and the female member 2 is insufficient, the amount of displacement of the detector 6 in the direction of the arrow Y1 is small, so that it can be immediately visually recognized. Note that the engagement protrusion 60 of the detection body 6 is
Since the groove 37c of the 0 notch 37 is press-fitted into the groove 37c, it is possible to prevent the detector 6 from coming off due to frictional resistance caused by press-fitting.

When the connection between the male member 1 and the female member 2 is released, the flange portion 30 of the locking claw member 3 is pushed toward the first socket portion 20, that is, in the direction of arrow X1 in the state of FIG. The claw portion 32 of the locking claw member 3 is pushed up in the radial direction while being retracted in the arrow X1 direction, and the claw portion 32 is moved to the male member 1.
From the ring-shaped locking portion 11. If the insertion end 10 of the male member 1 and the female member 2 are relatively separated in the axial direction in such a detached state, the male member 1 and the female member 2 can be easily and quickly separated from each other.

(Effects of the Embodiment) As described above, in the present embodiment, the detection body 6 of the detection body 6 is pushed by the pushing protrusion 13 different from the locking portion 11 that locks with the claw portion 32 of the locking claw member 3. In this configuration, the pressed surface 61 is pushed outward in the radial direction. Therefore, in order to facilitate visual recognition of the connection between the male member 1 and the female member 2, the detection body 6 is disposed radially outward.
In order to increase the displacement amount, the protrusion amount L1 of the extrusion protrusion 13 may be increased. Such a change in the projection amount L1 can be performed irrespective of the degree of engagement between the claw portion 32 and the engagement portion 11.

Further, as shown in FIG. 1, since the side surface of the pressed surface 61 of the detecting body 6 is inclined, if the pushing protrusion 13 advances in the direction of the arrow X1, the detection is performed by the so-called "wedge principle". The operation of pushing up the pressed surface 61 of the body 6 is performed smoothly. Moreover, as shown in FIG. 2, the pressed surface 61 of the detector 6 has an arc shape, and the pushing protrusion 13 is also ring-shaped. The area can be reduced, and therefore, the frictional resistance between the pressed surface 61 and the push-out projection 13 at the time of pushing up the detector 6 is small, which is advantageous for pushing up the detector 6 smoothly.

By the way, in the prior art shown in FIGS. 17 and 18,
The area of the detection body 300 is large, so that the detection body 300 easily interferes with, comes into contact with, and comes off other members and other mechanisms. In this case, if the male member and the female member are disengaged before joining, the original purpose cannot be fulfilled. In this respect, in the present embodiment, the detection body 6 is pushed up by the pushing protrusion 13 different from the locking portion 11, and moreover, compared with the occupied area of the flange portion 30 of the locking claw member 3, The occupied area is small, and it is easy to avoid interference and contact between the detection body 6 and other members or other mechanisms, which is advantageous for avoiding the above-mentioned problems.

In this embodiment, the bush 27 is sandwiched and fixed between the first socket portion 20 and the second socket portion 22. Therefore, as can be understood from FIG. 1 showing the use state, the internal pressure is O due to the minute gap m between the second inner peripheral surface 22g of the second socket portion 22 and the outer peripheral surface of the insertion end portion 10 of the male member 1.
Even when it acts on the rings 28a, 28b, and the collar 29, the bush 27 acts as a stopper for these parts, and in this sense, the degree of engagement between the claw portion 32 and the ring-shaped engagement portion 11 is reduced. Stabilize. O-ring 2
8a and 28b are deteriorated, the screw 20
By removing e and 22e, the first socket portion 20 and the second socket portion 22 can be separated, and therefore, the O-rings 28a and 28b can be replaced.

(Second Embodiment) Next, a second embodiment of the quick connector of the present invention is shown in FIG.
It will be described based on. The quick connector of this embodiment has basically the same configuration as that of the above embodiment. However, the locking claw member 3
The ring-shaped locking portion 11 that locks with the claw portion 32 has a convex shape protruding radially outward. Also in this example, the locking portion 1
1, an extrusion protrusion 13 is formed.
In this configuration, the pushed surface 61 of the detection body 6 is pushed outward in the radial direction by another pushing projection 13.

(Third Embodiment) Next, a third embodiment of the quick connector of the present invention is shown in FIG.
This will be described with reference to FIG. The quick connector of this embodiment has basically the same configuration as the above embodiment. In this example, the locking claw member 7 as the holding means is provided in the receiving hole 2 of the female member 2.
3a, it is arranged movably in the directions of arrows X1 and X2. The locking claw member 7 is made of resin, and is formed at a tip of the cylinder part 70 having a central hole 70h, a plurality of arm parts 71 extending along the axial direction from the cylinder part 70, and a tip end of the arm part 71. And a claw portion 72 having an inclined surface 72a. The detector 8 has a pressed surface 81 and a flange portion 82 that are inclined. The detecting body 8 is provided with a through hole 90 formed in a peripheral wall of the first socket portion 20 of the female member 2.
Press-fit. Further, the first socket portion 2 of the female member 2
0, a window 91 is formed to penetrate in the thickness direction, and between the window 91 and the through hole 90, a ring-shaped first along the direction perpendicular to the axis is formed.
A ring-shaped second restricting surface 93 is formed continuously with the restricting surface 92 and the first restricting surface 92 and extends along the axial direction.

FIG. 15 shows a state before the male member 1 is inserted into the female member 2. As shown in FIG.
Is in contact with or close to the outer peripheral surface of the first socket portion 20 of the female member 2. Then, similarly to the above embodiment, the insertion end portion 10 of the male member 1 is forcibly pressed into the receiving opening 24 of the female member 2. Then, the convex locking portion 11 is attached to the inclined surface 7 of the claw portion 72.
2a, the claw 72 is pushed and bent radially outward together with the arm 71, the claw 72 escapes to the window 91 side, and the locking portion 11 gets over the claw 72. In this state, as can be understood from FIG. 13, the extrusion protrusion 13 of the male member 1 hits the pressed surface 81 of the detection body 8, and the detection body 8 moves outward in the radial direction, that is, in the direction of the arrow Y1 as shown in FIG. 16. Extruded. Therefore, it is visually recognized that the locking portion 11 has passed over the claw portion 72, which is a prerequisite for the normal connection between the male member 1 and the female member 2.

In the state shown in FIG. 13, when the internal pressure during use acts on the locking claw member 7 via the minute gap m between the insertion end portion 10 and the second inner peripheral surface 22g of the female member 2, the locking claw member 7 Since 7 moves in the arrow X2 direction, the claw 72 fits into the space formed by the second regulating surface 93, and the tip end surface 72 e of the claw 72 contacts the first regulating surface 92. Thereby, the claw portion 72
Is restricted in both the axial direction and the direction perpendicular to the axis, so that the male member 1 and the female member 2 are securely connected.

(Other Examples) Although not shown, the present invention is disclosed in, for example,
The pipe joint (connector) described in U.S. Pat. No. 74593, the connector described in Japanese Utility Model Application Laid-Open No. 64-41794, and the like can be appropriately modified and implemented. That is, the detection body can be integrally added to the socket of the female joint provided with the retainer ring and the holding member as the holding means, and an extrusion protrusion can be added to the male joint as appropriate. Of course, it can be implemented in the form of

[0027]

According to the connector of the present invention, the detecting body is pushed outward in the radial direction by the push-out projection provided separately from the locking portion for locking the holding means. for that reason,
The structure of the locking portion may be concave or convex. Further, according to the connector of the present invention, in order to facilitate the visual recognition of the connection between the male member and the female member, if the displacement amount of the detection body is to be increased, the protrusion amount of the push-out protrusion may be increased. Such a change in the protrusion amount can be performed irrespective of the degree of engagement between the claw portion and the engagement portion.

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of an upper half in a state where a male member and a female member are joined.

FIG. 2 is a diagram of a state viewed from an arrow K1 direction in FIG. 1;

FIG. 3 is a side view showing a cross section of an upper half of a male member.

FIG. 4 is a side view showing a cross section of an upper half of a female member having a locking claw member.

FIG. 5 is a diagram of a state viewed from an arrow K2 direction in FIG. 4;

FIG. 6 is a side view showing a cross section of an upper half in a state where the male member is being inserted into the female member.

FIG. 7 is a diagram of a state viewed from a direction of an arrow K3 in FIG. 6;

FIG. 8 is a side view in which an upper half of the state in which the male member is inserted into the female member is a cross section.

FIG. 9 is a front view in a state viewed from an arrow K4 direction in FIG. 8;

FIG. 10 is a side view showing a state in which a locking claw member and a detection body are separated and a partial cross section is shown.

FIG. 11 is a diagram of a state viewed from an arrow K5 direction in FIG. 10;

FIG. 12 is a side view of a second embodiment showing a cross section of an upper half in a state where a male member and a female member are joined.

FIG. 13 is a side view of a third embodiment showing a cross section of an upper half in a state where a locking portion of a male member has passed over a claw portion of a locking claw member.

14 is a plan view of the state shown in FIG.

FIG. 15 is a front view of the female member in a state before the male member is inserted.

FIG. 16 is a front view showing a state where the male member is inserted into the female member.

FIG. 17 is a side view of a related art showing a cross section of an upper half in a state where a male member and a female member are joined.

FIG. 18 is a sectional view taken along line TT in FIG. 17;

[Explanation of symbols]

In the figure, 1 is a male member, 11 is a locking portion, 13 is an extrusion protrusion, 2
Is a female member, 3 and 7 are locking claw members, 32 and 72 are claw portions,
6 and 8 show detectors.

Claims (1)

(57) [Scope of request for utility model registration] 1. A concave or convex engaging portion extending in a ring shape, an insertion end extending forward of the engaging portion, and a predetermined distance behind the engaging portion and located radially outward. A cylindrical male member having a protruding protrusion, a female member having a receiving hole with a receiving opening into which the insertion end of the male member is inserted, and connecting the male member and the female member holding means for holding and is disposed to be movable radially outwardly to one of said holding means or said female member, and the insertion end of the male member
Pressing a when inserted from receiving incoming opening to receiving bore out peaks and those
Contact with the inner end of the pressed surface, when the the male member and the female member is connected, is composed of a detection member Ru pushed radially outwardly by the extrusion projection of the male member, the As the pressed surface of the detector goes inward in the radial direction,
A connector which is tapered and inclined so as to be on the insertion end side at the time of connection .