JPH06229488A - Connector - Google Patents

Abstract

PURPOSE:To improve operativity during connection and separation between a tongue part and a groove part. CONSTITUTION:A lock ring 3, which engages with a circular outer circumference groove 14 of a tongue member 1 and a circular inner circumference groove 26 of a groove member 2 so as to connect them together, has such width as is smaller than the depth of the circular outer circumference groove 14 and is larger than the depth of the inner circumference groove 26, and can be elastically deformed. A release tool 4, which can be slid in the axial direction in the outside of the tongue member 1, consists of a base part 41, which has a center hole, and plural leg parts 42, which integrally extend from the base part 41 to the axial direction, are arranged at intervals in the circumferential direction, and can penetrate deeper than the circular inner circumference groove 26 of the groove member 2 to the inside of the deep bottom axial direction groove extending to the axial direction from the opening end to the deeper side than the circular inner circumference groove 26. A pressing inner circumference face 42a, which shrinks the lock ring 3 in the diameter direction to release it from the circular inner circumference face 26 and to retract it to the inside of the circular outer circumference groove 14, and a point end taper face 42b, which is continuously arranged in the axial direction from the pressing inner circumference face 42a and is gradually expanded in the diameter toward the point end, are provided on the inner circumference face of the leg part 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a hose or a pipe for transferring a fluid such as water, air, hydraulic oil or fuel.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 18, a male member 100 having a connecting end 103 having an insertion end 101 at one end and a male screw portion 102 at the other end as a connector.
And a receiving hole 201 at one end and a male screw portion 20 at the other end.
2, a female member 200 having a connecting end portion 203 having two, an annular stopper 400 screwed to the large-diameter end 205 of the receiving hole 201 of the female member 200, and an annular outer periphery of the outer peripheral surface of the male member 100. A C-shaped lock ring 300 that engages with the groove 105 and the annular notch 401 of the stopper 400 to connect the male member 100 and the female member 200 is known (actual fairness). 3-43513). Here, the male screw portion 202 of the female member 200 has one cylindrical pipe 50.
0 female screw portion 501 is screwed, and the female screw portion 601 of the other cylindrical pipe 600 is attached to the male screw portion 102 of the male member 100.
Are screwed together.

[0003]

When the male member 100 and the female member 200 are disconnected from each other in the conventional connector, the stopper 400 screwed is unscrewed to stop the stopper 4.
00 and the female member 200 are unscrewed, and then the male member 1
00 and the female member 200 need to be separated. For this reason, there is a drawback that it takes time to separate both members, and it is difficult to perform the separation work in a complicated place.

In the connector described above, the male member 100
In the state before connecting the female member 200 and the female member 200, the lock ring 300 is a stopper 400 screwed to the female member 200.
It is held on the side of the annular cutout portion 401. At this time, when the female member 200 is held horizontally, the lock ring 300 has an outer diameter of the annular cutout 401 of the stopper 400.
Since it is smaller than the inner diameter of the stopper 400, it shifts downward in the annular notch 401 of the stopper 400. For this reason, especially when trying to connect the female member 100 and the male member 200 in a horizontal state, the lock ring 300 and the male member 100, which are eccentrically held in the annular notch 401 of the stopper 400, are inserted. There is a drawback in that the end portion 101 is misaligned and the female member 100 and the male member 200 cannot be mounted smoothly.

The present invention has been made in view of the above circumstances, and improves the operability when separating the coupled male member and female member and prevents the misalignment due to the deviation of the lock ring. An object of the present invention is to provide a connector having improved operability when connecting a female member and a male member.

[0006]

A connector of the present invention for solving the above-mentioned problems comprises a male member having an insertion end portion provided with an annular outer peripheral groove and a receiving hole into which the insertion end portion of the male member is inserted. The receiving hole has an annular inner peripheral groove provided so as to face the annular outer peripheral groove in a state where the insertion end portion is inserted into the receiving hole, and an annular inner peripheral groove from the opening end rather than the annular inner peripheral groove. A female member having a plurality of deep bottom axial grooves that extend axially to the inner side and are circumferentially separated from each other and are deeper than the annular inner circumferential groove, and the insertion end of the male member into the receiving hole of the female member. In the inserted state, the inner peripheral side engages with the annular outer peripheral groove of the male member and the outer peripheral side engages with the annular inner peripheral groove of the female member to couple the male member and the female member to each other. An elastically deformable lock ring having a thickness smaller than the depth of the annular outer peripheral groove and larger than the depth of the annular inner peripheral groove of the female member. The male member includes a base portion having a central hole and a plurality of leg portions that extend integrally in the axial direction from the base portion and are circumferentially separated from each other and can be inserted into the deep-bottom axial groove of the receiving hole. It is slidable in the axial direction to the outside, and the lock ring is reduced in diameter on the inner peripheral surface of the leg portion so as to be disengaged from the annular inner peripheral groove of the female member and inside the annular outer peripheral groove of the male member. A release tool having a pressing inner peripheral surface to be retracted and a tip tapered surface continuously provided in the axial direction from the pressing inner peripheral surface and increasing in diameter toward the tip. It is a thing.

[0007]

In the connector of the present invention, the male member has the insertion end inserted into the receiving hole of the female member, and the male member and the female member are connected to each other, and the inner peripheral side of the lock ring is the annular outer peripheral groove of the male member. And the outer peripheral side of the lock ring is engaged with the annular inner peripheral groove of the female member, whereby the male member and the female member are coupled.

Then, in order to release the coupling between the male member and the female member, the leg portion of the release tool is circumferentially aligned with the deep axial groove of the receiving hole of the female member while pressing the leg portion. Insert it until the inner surface reaches the lock ring. At this time, the lock ring gradually reduces its diameter while slidingly contacting the tip tapered surface of the leg portion of the release tool, and is pressed by the pressing inner peripheral surface of the leg portion to reduce the diameter. As a result, the lock ring is separated from the annular inner peripheral groove of the female member and retracted into the annular outer peripheral groove of the male member. In this state, if the male member and the female member are pulled apart in the axial direction, they can be easily separated from each other.

Further, the connector of the present invention can improve the operability when connecting the male member and the female member, as described below. That is, the lock ring is arranged in the annular outer peripheral groove of the male member, and the release tool is held outside this, and the lock ring is retracted into the annular outer peripheral groove of the male member by the pressing inner peripheral surface of the leg portion of the release tool. By inserting the insertion end of the male member into the receiving hole of the female member, the lock ring can be inserted into the receiving hole of the female member while effectively preventing the misalignment of the lock ring. The operability when combining and can be improved.

[0010]

EXAMPLES Specific examples of the connector of the present invention will be described. (Embodiment 1) The connector of Embodiment 1 shown in FIGS. 1 to 12 is composed of a male member 1, a female member 2, a lock ring 3 and a release tool 4.

First, referring to FIGS. 4 and 5, the male member 1
Will be described. The male member 1 is formed by plastically processing a cylindrical pipe made of steel, aluminum alloy or the like. Male member 1
The insertion end portion 1a provided on one end side is provided with a straight cylindrical small-diameter cylindrical portion 11 formed by scraping off the outer peripheral surface of the distal end portion over a predetermined length, and the proximal end side of the small-diameter cylindrical portion 11. It has a conical outer peripheral surface 12 and a large-diameter cylindrical portion 13 having a right cylindrical shape. An annular outer peripheral groove 14 is formed on the outer peripheral surface of the large-diameter cylindrical portion 13 by rolling at a position separated from the conical outer peripheral surface 12 by a predetermined distance in the axial direction.

As shown in the enlarged cross-sectional view of FIG. 5, the annular outer peripheral groove 14 has a shallow groove 14a on the side of the small-diameter cylindrical portion 11 whose depth is shallower than the thickness of the lock ring 3 and a depth smaller than the thickness of the lock ring 3. It is a two-step groove composed of a deep groove 14b having a large depth. The ring-shaped outer peripheral groove 14 holds a lock ring 3 made of a spring wire and having a circular cross-section that can be reduced in diameter. The overall shape of the lock ring 3 is substantially C-shaped. It should be noted that the lock ring 3 is in the natural state and has a large diameter cylindrical portion 13 of the male member 1.
Has a larger outer diameter than the outer diameter of the
3 has an inner diameter smaller than the outer diameter.

Next, the female member 2 will be described with reference to FIGS. The female member 2 is composed of an annular receiving head 21 made of an aluminum alloy on one end side and a cylindrical pipe 20 made of steel, an aluminum alloy or the like on the other end side. It should be noted that the cylindrical pipe 20 has a coupling hole 21b of the socket head 21.
It is joined by brazing (described later). As shown in FIG. 8, the inner peripheral surface of the tubular receiving head 21 has a receiving hole 21a on one end side, a coupling hole 21b on the other end side, and a receiving hole 21a.
And a coupling hole 21b, and an annular projection 21c projecting radially inward. Mouth head 21
The receiving hole 21a of the first conical inner peripheral surface 22 has a diameter reduced from the opening end side thereof toward the inner side in the axial direction from the opening end.
And a large-diameter inner peripheral surface 23, a second conical inner peripheral surface 24 that also has a diameter reduced toward the inner side in the axial direction, and a small-diameter inner peripheral surface 25. The maximum inner peripheral diameter (opening end portion) of the first conical inner peripheral surface 22 is set to be larger than the outer peripheral diameter of the lock ring 3 in a natural state. Also, the large diameter inner peripheral surface 23
The inner peripheral diameter of is smaller than the outer peripheral diameter of the lock ring 3 in a natural state, and is set to be substantially equal to the outer peripheral diameter of the large-diameter cylindrical portion 13 of the male member 1. Also, the small diameter inner peripheral surface 25
The inner peripheral diameter of is set to be substantially equal to the outer peripheral diameter of the small diameter cylindrical portion 11 of the male member 1.

An annular inner peripheral groove 26 is coaxially formed on the large-diameter inner peripheral surface 23 of the receiving hole 21a, and a ring-shaped seal groove 27 is coaxially formed on the small-diameter inner peripheral surface 25.
The cross-sectional shape of the annular inner circumferential groove 26 is, as shown in the enlarged cross-sectional view of FIG. 9, a flat portion 26a having a constant depth, and is provided on one end side (opening end side) of the flat portion 26a toward the opening end. And a curved surface portion 26c that is provided on the other end side (back side) of the flat portion 26a and that decreases in a curved shape toward the back side. The depth of the annular inner circumferential groove 26 in the flat portion 26a is set to be approximately equal to half the thickness of the lock ring 3, and the inner circumferential diameter of the annular inner circumferential groove 26 in the flat portion 26a is set to the lock ring 3. It is set to be almost equal to the outer diameter of the natural state. A rubber seal ring 28 is mounted in the seal groove 27. Further, on the opening end side of the receiving hole 21a,
Four deep bottom axial grooves 29, which extend axially from the opening end to the inner side of the annular inner circumferential groove 26 and are spaced at equal intervals in the circumferential direction, are deeper than the annular inner circumferential groove. Deep bottom axial groove 29
The axial length of the release tool 4 is 42 (described later) of the release tool 4.
It is set shorter than the axial length of. In detail,
With the male member 1 and the female member 2 coupled with each other and the tip of the leg portion 42 of the release tool 4 reaching the axial bottom surface of the deep-bottom axial groove 29, an inner circumferential groove of the leg portion 42 (described later) will be described. ) 43 and a tip tapered surface (described later) 42b, an axial length of the deep bottom axial groove 29 is set so that a pressing inner peripheral surface (described later) 42a faces the annular outer peripheral surface 14 of the male member 1. Is set.

Incidentally, four recesses 21d are provided at positions corresponding to the deep-bottom axial grooves 29 on the peripheral edge of the receiving head 21 on the opening end side of the receiving hole 21a. Also,
The end surface of the receiving head 21 at the portion where the deep-bottom axial groove 29 is not provided is four contact end surfaces 21e that are equally spaced in the circumferential direction. The release tool 4 is made of a resin such as nylon 6, and as shown in FIGS. 10 to 12, a ring-shaped base portion 41 having a central hole, and an axially integrally extending one end side of the base portion 41 in the circumferential direction. It is composed of four leg portions 42 which are equally spaced and can be inserted into the deep-bottom axial groove 29 of the receiving hole 21a.

An annular recess 41 is formed on the other end of the base 41.
a is provided, and thereby a thin annular wall 41b that is elastically deformable in the radial direction is formed on the inner peripheral side of the base portion 41.
An annular small protrusion 41c is provided on the inner peripheral surface of the annular wall 41b. The inner diameter of the base portion 41 is set to be substantially equal to or slightly larger than the outer diameter of the large diameter cylindrical portion 13 of the male member 1, and the inner diameter of the small annular protrusion 41c is set to the outer diameter of the large diameter cylindrical portion 13. Is set smaller than.

The inner peripheral surface of each leg portion 42 has a base portion 41.
The pressing inner peripheral surface 42a extends flush with the inner peripheral surface, and the tip tapered surface 42b is continuously provided in the axial direction from the pressing inner peripheral surface 42a and has a diameter that increases toward the tip. The inner peripheral diameter of the virtual inner peripheral surface connecting the pressing inner peripheral surfaces 42a of each leg portion 42 is set smaller than the outer peripheral diameter of the lock ring 3 in the natural state. On the pressing inner peripheral surface 42a of each leg 42,
Inner peripheral grooves 43 are provided respectively. This inner circumferential groove 43
As shown in the enlarged view of FIG. 12, the cross-sectional shape of the flat portion is a flat portion 43a having a constant depth, and the flat portion 43a is provided on one end side (the tip end side of the leg portion 42) of the flat portion 43a and linearly extends in the direction. The inclined portion 43b has a shallow depth, and the curved surface portion 43c is provided on the other end side (the proximal end side of the leg portion 42) of the flat portion 43a and has a curved depth that becomes shallower in the direction. There is. The depth of the annular inner circumferential groove 43 in the flat portion 43a is set to be approximately equal to half the thickness of the lock ring 3, and the virtual inner circumference connecting the inner circumferential groove 43 in the flat portion 43a of each leg 42 is set. The diameter is set to be substantially equal to the outer diameter of the lock ring 3 in its natural state.

With respect to the connector of this embodiment having the above-mentioned structure, the case where the male member 1 and the female member 2 are connected will be described. As shown in FIG. 2, after the lock ring 3 is fitted into the annular outer peripheral groove 14 of the male member 1, the release tool 4 is fitted into the outside of the male member 1 from the left side of FIG. At this time,
When the tip tapered surface 42b of each leg portion 42 of the release tool 4 reaches the lock ring 3, the lock ring 3 is pushed by the tip tapered surface 42b and fits into the shallow bottom 14a of the annular outer circumferential groove 14. In this state, since the outer peripheral surface of the lock ring 3 projects radially outward from the outer peripheral surface of the large-diameter cylindrical portion 13 of the male member 1, each leg portion 42 of the release tool 4 is elastically deformed in the radial outer direction and locked. Ride on Ring 3. Then, at the position where the inner circumferential groove 43 of each leg portion 42 faces the annular outer circumferential groove 14 of the male member 1, the lock ring 3 elastically restores,
The inner peripheral side of the lock ring 3 engages with the annular outer peripheral groove 14 of the male member 1, and the outer peripheral side engages with the inner peripheral groove 43 of the release tool 4,
The release tool 4 is held by the male member 1.

While the male member 1 holding the release tool 4 by the lock ring 3 is circumferentially aligned with the respective contact end surfaces 21e of the receiving head 21 by visually checking the leg portions 42 of the release tool 4, the female member 1 is held. The insertion end 1a of the male member 1 is inserted into the receiving hole 21a of the female member 2 while facing the member 2. After the tip end surface of each leg portion 42 of the release tool 4 contacts each contact end surface 21e of the receiving head 21,
The release tool 4 stops at this position, and only the male member 1 is inserted into the receiving hole 21a of the female member 2 together with the lock ring 3 while the release tool 4 and the male member 1 relatively move in the axial direction. At this time, the lock ring 3 is radially inwardly pressed by the pressing inner peripheral surface 42a of each leg portion 42 of the release tool 4 to reduce the diameter, and is retracted into the deep groove 14b of the annular outer peripheral groove 14 of the male member 1. ing. When the lock ring 3 reaches the tip tapered surface 42b of each leg 42 of the release tool 4,
The lock ring 3 is guided by the tip tapered surface 42b and gradually expands in diameter, and then gradually guided by the inner peripheral surface 22 of the first cone of the receiving hole 21a of the female member 2 which is continuous with the tip tapered surface 42b. Diameter. Then, the annular outer peripheral groove 14 of the male member 1
At the position opposite to the annular inner peripheral groove 26 of the female member 2, the inner circumference side of the lock ring 3 engages with the deep bottom 14b of the annular outer peripheral groove 14 of the male member 1 by elastically restoring the lock ring 3. The side engages with the annular inner circumferential groove 26 of the female member 2 and is brought into a temporary holding state (state of FIG. 1). In this state, as shown in FIG. 1, the rubber seal ring 28 is crushed, and the outer peripheral surface of the small-diameter cylindrical portion 11 of the male member 1 and the small-diameter inner peripheral surface 2 of the female member 2 are crushed.
A liquid-tight seal is provided between 5 and 5.

Since the release tool 4 is provided with the annular small protrusion 41c on the inner peripheral surface of the base 41, it does not move in the axial direction unless a force of a certain level or more is applied, and the release member 4 has a large size. It can be held near the female member 2 on the outer peripheral surface of the radial tube portion 13. When a fluid flows through the hose connected to the male member 1 and the female member 2, the male member 1 and the female member 2 are relatively displaced in the axial direction away from each other by the fluid pressure. As a result, the deep groove 14 of the annular outer peripheral groove 14
The lock ring 3 temporarily held by b is an annular outer peripheral groove 14
Of the ring member 3, the inner peripheral side of the lock ring 3 engages with the shallow groove 14a of the annular outer peripheral groove 14, and the outer peripheral side thereof engages with the female member 2.
It is locked by engaging with the annular inner circumferential groove 26. Therefore, the diameter reduction of the lock ring 3 in the direction perpendicular to the axis is reliably suppressed by the groove bottom surface of the shallow groove 14 a of the annular outer peripheral groove 14.

When the male member 1 is to be disconnected from the female member 2, the deep groove 1 of the annular outer peripheral groove 14 of the male member 1 is released.
4b and the annular inner peripheral groove 26 of the female member 2 face each other,
The male member 1 and the female member 2 are relatively moved in the axial direction. In this state, the leg portions 42 of the release tool 4 are circumferentially aligned with the recesses 21d provided on the peripheral edge of the end face of the receiving head 21, while the leg portions 42 of the release tool 4 are received.
It is inserted in the deep bottom axial groove 29 of a. At this time, since the lock ring 3 is engaged with the annular inner peripheral groove 26 of the receiving hole 21a and the axial displacement is restricted, the tip tapered surface 42b of each leg portion 42 of the release tool 4 is locked by the lock ring 3. When it reaches, the lock ring 3 is pushed by the tip tapered surface 42b and contracts radially inward. As a result, the lock ring 3 separates from the annular inner peripheral groove 26 of the female member 2 and retracts into the deep groove 14b of the annular outer peripheral groove 14 of the male member 1.
In this state, if the male member 1 and the female member 2 are relatively separated in the axial direction, the male member 1 and the female member 2 can be easily separated.

Thus, according to the connector of this embodiment,
In order to remove the separation between the male member 1 and the female member 2, while aligning the respective leg portions 42 of the release tool 4 in the circumferential direction with the respective concave portions 21d provided in the peripheral edge portion of the end surface of the receiving head 21, This can be performed by an extremely simple operation of inserting the leg portion 42 into the deep-bottom axial groove 29 of the receiving hole 21a.
Further, since the release tool 4 can be held near the female member 2 on the outer peripheral surface of the large-diameter cylindrical portion 13 of the male member 1,
The release tool 4 can be efficiently and easily inserted into the receiving hole 21a of the female member 2 during the separating operation. Therefore, workability when releasing the connection between the male member 1 and the female member 2 can be improved.

In addition, the connector of this embodiment can also improve the mountability when connecting the male member 1 and the female member 2. That is, when the insertion end portion 1 a of the male member 1 is inserted into the receiving hole 21 a of the female member 2, the lock ring 3 held in the annular outer peripheral groove 14 has the pressing inner peripheral surface 42 a of each leg portion 42 of the release tool 4. Is pressed radially inward by the annular outer peripheral groove 1
4, the lock ring 3 moves while being retracted in the deep groove 14b, and the female member 2 is kept concentric with the tapered surfaces 42b of the legs 42 and the inner peripheral surface 22 of the first conical surface of the receiving head 21. Is inserted into the receiving hole 21a. Therefore, due to the misalignment of the lock ring 3, the male member 1 and the female member 2
Wearability with and will not be hindered.

In the above embodiment, when the male member 1 and the female member 2 are joined together, the leg portions 42 of the release tool 4 are brought into contact with the abutting end surface 21e of the receiving head 21 so that the female member 2 is brought into contact therewith. Although the use mode in which only the male member 1 is inserted into the receiving hole 21a has been described, the use mode is not limited to this. That is, when the male member 1 and the female member 2 are coupled, each leg portion 42 of the release tool 4 is inserted into each deep-bottom axial groove 29 of the receiving hole 21a, and the lock ring 3 is at least the female member 2. The lock ring 3 can be surely inserted into the receiving hole 21a by retracting only the release tool 4 after the insertion into the receiving hole 21a. It will not be hindered.

(Other Embodiments) The release tool 4 shown in FIGS. 13 and 14 does not have the annular recess 41a and the annular small projection 41c of the release tool 4 of the first embodiment, and has a rear end on the inner peripheral end surface of the base 41. The tapered surface 41d is provided, and the tip end side of each leg portion 42 is inclined in the radial inward direction. According to this release tool 4, after the lock ring 3 is fitted into the annular outer peripheral groove 14 of the male member 1, the insertion end portion 1 of the male member 1 is inserted.
The release tool 4 can be inserted from the tip side of a (right side of FIG. 2). That is, the release tool 4 can be easily fitted by retracting the lock ring 3 into the deep groove 14 b of the annular outer peripheral groove 14 by reducing the diameter of the lock ring 3 by the rear end taper surface 41 d of the release tool 4. In the release tool 4 of the first embodiment, the annular recess 41a
Further, the release tool 4 is held outside the large-diameter cylindrical portion 13 of the male member 1 so as not to move in the axial direction by providing the small annular protrusion 41c. However, the release tool 4 of the present embodiment has a simple structure in which the tip end side of each leg portion 42 is inclined radially inward, and thus the release tool 4 is maleized by utilizing the elastic force of each leg portion 42. It can be held on the outside of the member 1.

When it is not necessary to hold the release tool 4 on the outer side of the male member 1, the release tool 4 should have a structure in which each leg 42 extends in the axial direction as shown in FIG. You can also In the first embodiment, the annular outer peripheral groove 14 of the male member 1 is composed of the shallow groove 14a and the deep groove 14b.
Although the stepped groove structure is adopted, the shape of the annular outer peripheral groove 14 is not limited to this. That is, as shown in FIG. 16, instead of the shallow groove 14a, the annular outer circumferential groove 14 may be an inclined groove 14c whose depth becomes linearly shallower toward the small-diameter cylindrical portion 11 side of the male member 1. it can. In this case as well, the same action as the two-step groove can be provided. Also,
The annular outer peripheral groove 14 eliminates the shallow groove 14a and replaces the deep groove 1
It is also possible to make a simple groove shape of 4b.

Further, in the above-mentioned embodiment, the release tool 4 is used.
Although the base portion 41 is formed in a cylindrical shape and cannot be deformed, the base portion 41 may be formed in a deformable C ring shape so that the release tool 4 can be attached to the male member 1 in the direction perpendicular to the axis.

[0028]

According to the connector of the present invention, the male member and the female member can be connected very easily by a simple operation of inserting the release tool into the receiving hole of the female member while aligning the release tool in the circumferential direction. It can be canceled. Further, when the male member and the female member are joined together, the release tool can effectively prevent the misalignment of the lock ring held in the annular outer peripheral groove of the male member. Therefore, the connector of the present invention can improve the operability when connecting the male member and the female member and when releasing the connection.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a state in which a male member is inserted into a female member.

FIG. 2 is a partial cross-sectional continuous view showing a state where a part of the male member is inserted into the female member.

FIG. 3 is a cross-sectional view illustrating a state when the coupling between the male member and the female member is released.

FIG. 4 is a sectional view of a male member.

FIG. 5 is an enlarged sectional view illustrating an annular outer peripheral groove of the male member.

FIG. 6 is a partial cross-sectional side view of a female member.

FIG. 7 is a front view of the receiving head of the female member.

8 is a partial cross-sectional side view of the female member receiving head taken along the line AA in FIG. 7. FIG.

FIG. 9 is an enlarged cross-sectional view illustrating an annular inner peripheral groove of a receiving hole of a female member.

FIG. 10 is a cross-sectional view of a release tool.

FIG. 11 is a front view of the release tool.

FIG. 12 is an enlarged perspective view illustrating an inner circumferential groove of the release tool.

FIG. 13 is a cross-sectional view showing another example of the release tool.

FIG. 14 is a front view of the other release tool.

FIG. 15 is a cross-sectional view showing still another example of the release tool.

FIG. 16 is an enlarged cross-sectional view showing another example of the annular outer peripheral groove of the male member.

FIG. 17 is an enlarged cross-sectional view showing still another example of the annular outer peripheral groove of the male member.

FIG. 18 is a cross-sectional view of a conventional connector.

[Explanation of symbols]

1 is a male member, 1a is an insertion end, 14 is an annular outer peripheral groove, 2 is a female member, 21a is a receiving hole, 26 is an annular inner peripheral groove, 29 is a deep bottom axial groove, 3 is a lock ring, 4 is a release. 41
Is a base portion, 42 is a leg portion, 42a is a pressing inner peripheral surface, and 42b is a tip tapered surface.

Claims (1)

[Claims] 1. A male member having an insertion end provided with an annular outer peripheral groove, and a receiving hole into which the insertion end of the male member is inserted, the receiving hole having the insertion end receiving the insertion end. An annular inner peripheral groove provided so as to face the annular outer peripheral groove in a state of being inserted into the hole, and an annular inner peripheral groove extending in the axial direction from the opening end to a position deeper than the annular inner peripheral groove and spaced in the annular direction. A female member having a plurality of deep bottom axial grooves deeper than the circumferential groove; and an annular outer circumferential groove of the male member on the inner peripheral side in a state where the insertion end of the male member is inserted into the receiving hole of the female member. And the outer peripheral side engages with the annular inner peripheral groove of the female member to connect the male member and the female member, and is smaller than the depth of the annular outer peripheral groove of the male member and An elastically deformable lock ring having a thickness larger than the depth of the annular inner circumferential groove, a base portion having a central hole, and an axially integrally extending portion from the base portion. And a plurality of legs that are circumferentially separated from each other and can be inserted through the deep-bottom axial groove of the receiving hole, and the female member is formed by reducing the diameter of the lock ring on the inner peripheral surface of the leg. Of the pressing inner peripheral surface which is separated from the annular inner peripheral groove of the male member and is retracted into the annular outer peripheral groove of the male member, and is continuously provided in the axial direction from the pressing inner peripheral surface and increases in diameter toward the tip. A connector having a tapered surface and a release tool slidable on the outside of the male member in the axial direction.