JP2020143724A - Metal insert fitting of insertion type connection joint, and insertion type connection joint - Google Patents

Abstract

To provide a metal insert fitting capable of preventing malfunction of a driven cylinder.SOLUTION: A metal insert fitting 10 has: a hollow cylindrical body 11 comprising a mounting base part 11a to which another member can be mounted, and a tip part 11c; a plate-shaped grip ring 13 comprising an opening 13p; and a hollow cylindrical driven cylinder 14 arranged on the tip side of the grip ring 13, wherein the grip ring 13 and the driven cylinder 14 are slidably engaged with the cylinder 11 so as to be adjacent to each other. Consequently, it is possible to prevent the movement of the grip ring 13 from being transmitted to the driven cylinder 14.SELECTED DRAWING: Figure 1

Description

The present invention relates to a plug of a plug-in type joint and a plug-in type joint, and more particularly to a metal fitting (joint) for detachably connecting a fire hose.

FIG. 7 is a partially cutaway sectional perspective view of a conventional plug-in type joint. As shown in FIG. 7, the conventional plug-in joint 200 has a cylindrical fitting 20 attached to the end of one fire hose Ha and a cylinder attached to the end of the other fire hose Hb. When inserted into the socket of the shape receiving metal fitting 30, the claws 32a, 32b, 32c of the receiving metal fitting 30 are caught in the annular recess 21g of the metal fitting 20, and the metal fitting 20 and the metal fitting 30 are connected. When the push ring 22 of 20 is slid toward the receiving metal fitting 30, the pushing ring 22 is configured to remove the claws 32a, 32b, 32c from the recess 21g so that the insertion metal fitting 20 and the receiving metal fitting 30 can be separated. This type of plug-in joint 200 is described in the Japanese Industrial Standards (Japanese Industrial Standards, JIS) (JIS B 9911).

The metal fitting 20 in the plug-in type joint 200 has a cylindrical cylinder 11 and a push ring 22 slidably attached to the outer periphery of the cylinder 11. The push ring 22 is a cylinder having an L-shaped cross section, and has a hollow cylindrical tubular portion 22a and a flange portion 22f having a diameter larger than that of the tubular portion 22a. The flange portion 22f is a plate-shaped ring, and is provided at one end of the tubular portion 22a on the fire hose Ha side. The flange portion 22f and the tubular portion 22a are integrally formed. Therefore, the flange portion 22f and the tubular portion 22a slide together.

In the conventional plug-in type joint 200, when an obstacle is caught on the flange portion 22f of the push ring 22 of the metal fitting 20 when dragging the fire-fighting hoses Ha and Hb connected by the plug-in joint 200, the push ring The flange portion 22f and the tubular portion 22a of the 22 slide together, the tubular portion 22a closes the recess 21g, the claws 32a, 32b, 32c of the receiving metal fitting 30 are removed from the concave portion 21g, and the fitting 20 and the receiving metal fitting 20 are received. There is a problem that the metal fitting 30 is disconnected. In order to solve this problem, the inventions shown in Patent Documents 1 to 4 have been devised. In Patent Documents 1 and 2, after connecting the fitting and the receiving metal fitting, a C-shaped member (disengagement prevention tool 20, lock member 20) is referred to as a flange portion of a push ring (release ring 7, push ring 9) and a receiving metal fitting. A plug-in joint that is detachably attached between the two is described. Further, in Patent Documents 3 and 4, a support portion (spacer portion 9a, protective frame portion 25b) is formed on a cushioning material (protective band 9, protective member 25') of a receiving metal fitting called a tire or a rubber band, and this support is provided. A plug-in type joint is described in which the flange portion of the push ring (push ring 11, release member 14) in the metal fitting is supported by the portion.

Japanese Unexamined Patent Publication No. 2000-329280 Japanese Unexamined Patent Publication No. 2004-011860 JP-A-2017-213065 Japanese Unexamined Patent Publication No. 2018-031464

In order to prevent malfunction of the push ring, a C-shaped member (disengagement prevention tool 20, lock member 20) which is a separate member is used in Patent Documents 1 and 2, and a cushioning material (cushioning material) for a metal fitting is used in Patent Documents 3 and 4. Since the support portion (spacer portion 9a, protective frame portion 25b) is formed on the protective band 9 and the protective member 25'), there is a problem that the manufacturing cost increases.

Therefore, the present invention solves the above-mentioned problems, and the problem is that the fitting that can prevent the malfunction of the push wheel and the fitting and the receiving fitting are suddenly disconnected without increasing the manufacturing cost. It is an object of the present invention to provide a plug-in type joint that can prevent the joint from being damaged.

In order to solve the above problems, the metal fittings of the present invention include a hollow tubular body having a mounting base and a tip to which other members can be attached, a plate-shaped grip ring having an opening, and the grip. It has a hollow tubular driven cylinder arranged on the tip side of the ring, and the gripping ring and the driven cylinder are slidably engaged with the cylinder so as to be adjacent to each other. To do.

According to the present invention, the metal fittings include a hollow tubular body having a mounting base and a tip to which other members can be attached, a plate-shaped grip ring having an opening, and a tip side of the grip ring. The gripping wheel and the driven cylinder are slidably engaged with the cylinder so as to be adjacent to each other so as to have a hollow tubular driven cylinder arranged in the above. Is not directly transmitted to the driven cylinder, so that malfunction of the driven cylinder can be prevented.

In the present invention, it is preferable that the driven cylinder can be slid by the sliding of the gripping wheel when the plate surface of the gripping wheel is oriented orthogonally to the axis of the cylinder.

According to the present invention, when the plate surface of the gripping ring is oriented orthogonally to the axis of the cylinder, the driven cylinder can be slid by the sliding of the gripping ring. The movement of the gripping wheel can be transmitted to the driven cylinder only when the plate surface of the ring is oriented orthogonal to the axis of the cylinder.

In the present invention, an intermediate portion is provided between the mounting base portion and the tip portion of the tubular body, and the intermediate portion of the tubular body is inserted into the opening of the grip ring and the driven cylinder. The grip ring is formed to have a larger diameter than the driven cylinder, and the inner diameter of the opening of the grip ring is set to be larger than the outer diameter of the intermediate portion of the cylinder and smaller than the outer diameter of the driven cylinder. Is preferable.

According to the present invention, an intermediate portion is provided between the mounting base portion and the tip portion of the tubular body, and the intermediate portion of the tubular body is inserted into the opening of the grip ring and the driven cylinder. The grip ring is formed to have a larger diameter than the driven cylinder, and the inner diameter of the opening of the grip ring is set to be larger than the outer diameter of the intermediate portion of the cylinder and smaller than the outer diameter of the driven cylinder. As a result, the end portion of the driven cylinder is arranged within the range of the plate surface of the gripping ring, so that the plate surface of the gripping ring is surely pressed against the end portion of the driven cylinder by the slide of the gripping ring. Can be done. The inner diameter of the opening of the gripping ring may be the same as the inner diameter of the driven cylinder.

In the present invention, it is preferable that the outer periphery of the intermediate portion of the tubular body is formed with irregularities that impart frictional resistance. According to the present invention, since the outer periphery of the intermediate portion of the tubular body is formed with irregularities that impart frictional resistance, it is possible to easily hook the grip ring on the outer periphery of the intermediate portion of the tubular body. it can. Here, the unevenness may be a plurality of minute cones or pyramids, a plurality of ring-shaped convex portions arranged in the axial direction of the tubular body, or a rough surface. ..

The plug-in type joint fitting of the present invention comprises the insertion bracket according to any one of claims 1 to 4, and a hollow tubular receiving bracket having a plurality of claws that can freely appear and disappear in the socket. When the driven cylinder is moved to the tip side in a state where the plurality of claws of the receiving metal fitting are caught on the cylinder body of the fitting and the fitting and the receiving metal fitting are connected to each other, the plurality of claws Is configured to be separated from the cylinder and the insert fitting and the receiving fitting are separated from each other.

According to the present invention, the plug-in type coupling joint is a hollow tubular receiving metal fitting provided with the metal fitting according to any one of claims 1 to 4 and a plurality of claws that can freely appear and disappear in the socket. When the driven cylinder is moved to the tip side in a state where the plurality of claws of the receiving metal fitting are caught on the tubular body of the metal fitting and the metal fitting and the receiving metal fitting are connected to each other. Since the plurality of claws are configured to be separated from the cylinder and the insert and the receiver are separated from each other, the insert and the receiver are separated only when the driven cylinder is moved to the tip side. Therefore, it is possible to prevent the connection between the insert fitting and the receiving metal fitting from being unexpectedly released. To move the driven cylinder toward the tip end means to slide the driven cylinder toward the tip end portion of the cylinder body.

As described above, according to the present invention, the conventional push ring is divided into a grip ring and a driven cylinder, and the movement of the grip wheel is not directly transmitted to the driven cylinder, so that malfunction of the driven cylinder can be prevented. , It is possible to obtain an excellent effect that it is possible to prevent the connection between the metal fitting and the metal fitting from being accidentally released.

It is a partial cut-out sectional perspective view of the metal fitting of the embodiment which concerns on this invention. It is a partial vertical sectional view of the metal fitting of this embodiment. A partial longitudinal sectional view showing a state in which an obstacle is caught on the first end of the grip ring when the metal fitting is dragged upward (a), and an obstacle is caught on the second end of the grip ring. It is a partial vertical sectional view showing a state and (b). A partial longitudinal sectional view showing a state in which an obstacle is caught on the first end of the grip ring when the metal fitting is dragged downward (a), and an obstacle is caught on the second end of the grip ring. It is a partial vertical sectional view and (b) which show the state of being It is a vertical sectional view of the plug-in type joint of the embodiment which concerns on this invention. It is a top view (a)-(d) of another gripping ring. It is a partial cut-out sectional perspective view of the conventional plug-in type joint.

Hereinafter, the metal fittings of the embodiment according to the present invention will be described in detail. FIG. 1 is a partially cutaway sectional perspective view of the metal fitting of the present embodiment according to the present invention. As shown in FIG. 1, the insert fitting 10 constitutes a plug-in type coupling joint that detachably connects the fire hose to the receiving metal fitting, and forms a cylinder 11, a grip ring 13, and a driven cylinder 14. And have.

In the drawings, the direction indicated by the arrow U is the upper side (the upper side of the paper surface in FIGS. 1 to 5), and the direction indicated by the arrow D is the lower side (the lower side of the paper surface in FIGS. 1 to 5). It is.). The direction indicated by the arrows U and D is the vertical direction. This vertical direction is set to be the same as the direction extending along the axis O of the tubular body 11 in the metal fitting 10. These directions indicate relative positional relationships, and do not indicate absolute positional relationships with respect to the direction of gravity.

The tubular body 11 has a hollow cylindrical shape made of a rigid material such as metal, and has a mounting base portion 11a, an intermediate portion 11b, and a tip portion 11c. The mounting base portion 11a, the intermediate portion 11b, and the tip portion 11c are integrally formed, and are sequentially arranged in the vertical direction from the upper side indicated by the arrow U to the lower side indicated by the arrow D, and the inside communicates in the vertical direction. .. In other words, the mounting base 11a is the upper portion of the cylinder 11, and the tip 11c is the lower portion of the cylinder 11. The intermediate portion 11b is an intermediate portion of the tubular body 11, and is provided between the mounting base portion 11a and the tip portion 11c.

The mounting base 11a of the tubular body 11 is a portion for mounting other members such as a fire hose, and a plurality of irregularities are formed on the outer periphery in order to prevent the other members from coming off. These plurality of irregularities are ring-shaped orbiting around the axis O, and are arranged in the vertical direction. The outer peripheral portion 11bS of the intermediate portion 11b of the tubular body 11 is smoothly formed. The tip portion 11c of the tubular body 11 is located on the tip end side of the metal fitting 10, and the lower end portion 11ce of the tip portion 11c has a radial outer edge (outer edge) curved in an arc shape. As a result, the insertion bracket 10 can be smoothly inserted from the tip side without being caught in the receiving port of the receiving bracket.

The gripping wheel 13 and the driven cylinder 14 are made of a rigid material such as metal. The grip ring 13 has a plate shape and is configured to be able to grip the plate surfaces (upper surface and lower surface). An opening 13p is formed in the grip ring 13. The opening 13p penetrates from the upper surface to the lower surface of the plate surface in the vertical direction. On the other hand, the driven cylinder 14 has a hollow tubular shape and has an opening 14p that penetrates in the vertical direction. In the illustrated example, the grip ring 13 is annular and the driven cylinder 14 is cylindrical. For example, the plate thickness of the grip ring 13 is 4 mm, and the axial length of the driven cylinder 14 is 9.5 mm.

The fitting 10 is assembled by sequentially inserting the driven cylinder 14 and the gripping ring 13 from the mounting base portion 11a to the intermediate portion 11b of the cylinder body 11. In this state, the fitting ring 13 and the driven cylinder 14 are slidably engaged with the intermediate portion 11b of the cylinder body 11. More specifically, the intermediate portion 11b of the tubular body 11 is inserted into the opening 13p of the gripping ring 13 and the opening 14p of the driven cylinder 14, and the gripping ring 13 and the driven cylinder 14 are along the intermediate portion 11b of the tubular body 11. It is configured to be slidable in the vertical direction.

A retaining ring 15 is attached between the attachment base portion 11a and the intermediate portion 11b of the tubular body 11. The retaining ring 15 has a ring shape and is attached to the outer periphery of the tubular body 11 so as to orbit around the axis O of the tubular body 11. Further, the tip portion 11c of the tubular body 11 is formed to have a larger diameter than the intermediate portion 11b, and a step portion sp is provided between the intermediate portion 11b and the tip portion 11c of the tubular body 11. This step portion sp is the upper end portion of the tip portion 11c. The retaining ring 15 and the stepped portion sp constitute a stopper for the gripping ring 13 and the driven cylinder 14, and the gripping ring 13 and the driven cylinder 14 are between the retaining ring 15 and the stepped portion sp, that is, in the middle of the cylinder body 11. It is designed to slide within the range of the portion 14.

Here, the gripping wheel 13 and the driven cylinder 14 are arranged vertically so as to be adjacent to each other, and the driven cylinder 14 is arranged on the tip end side of the gripping wheel 13. That is, the gripping ring 13 is arranged on the side of the mounting base portion 11a of the tubular body 11 with respect to the driven communication 14, and the driven cylinder 14 is arranged on the side of the tip end portion 11c of the tubular body 11 with respect to the gripping wheel 13. ing. Therefore, when the gripping ring 13 is slid upward, the gripping ring 13 abuts on the retaining ring 15, and when the driven cylinder 14 is slid downward, the driven cylinder 14 abuts on the step portion sp. There is.

FIG. 2 is a partial vertical sectional view of the fitting of the present embodiment. As shown in FIG. 2, the grip ring 13 is configured to be slidable in the vertical direction when the plate surface is in an orthogonal posture with respect to the axis O of the tubular body 11. In the illustrated example, if the virtual line extending parallel to the plate surface of the grip ring 13 is F and the angle formed by the virtual line F and the axis O of the cylinder 11 is θ, the grip is held so that this angle θ is a right angle. By setting the posture of the wheel 13, the gripping wheel 13 can be slid in the vertical direction.

Here, the grip ring 13 projects in the radial direction from the driven cylinder 14. More specifically, the outer diameter W13 of the grip ring 13 is set to be larger than the outer diameter W14 of the driven cylinder 14 (W13> W14), and the inner diameter D13 of the opening 13p of the grip ring 13 is the intermediate portion 11b of the cylinder 11. It is set to be larger than the outer diameter Wb of the above and smaller than the outer diameter W14 of the driven cylinder 14 (Wb <D13 <W14). As a result, the end portion of the driven cylinder 14 is arranged within the range of the plate surface of the gripping ring 13, and the plate surface of the gripping ring 13 comes into contact with the driven cylinder 14 by sliding the gripping ring 13. Specifically, the lower surface 13S of the grip ring 13 and the upper portion 14u of the driven cylinder 14 come into contact with each other. As a result, the driven cylinder 14 can be slid by the sliding of the gripping wheel 13.

In the illustrated example, the inner diameter D13 of the opening 13p of the gripping ring 13 and the inner diameter D14 of the opening 14p of the driven cylinder 14 are set to be the same (D13 = D14), and these inner diameters D13 and D14 are 63.6 to 64 mm. is there. The outer diameter W13 of the grip ring 13 is 90 mm, and the outer diameter W14 of the driven cylinder 14 is 70.5 to 70.7 mm.

Further, the driven cylinder 14 is formed to have a larger diameter than the tip end portion 11c of the cylinder body 11, and the driven cylinder 14 projects in the radial direction from the tip end portion 11c of the cylinder body 11. More specifically, the outer diameter W14 of the driven cylinder 14 is set to be larger than the outer diameter Wc of the tip portion 11c of the cylinder 11 (W14> Wc), and the inner diameter D14 of the opening 14p of the driven cylinder 14 is the cylinder 11. It is set to be larger than the outer diameter Wb of the intermediate portion 11b and smaller than the outer diameter Wc of the tip portion 11c of the tubular body 11 (Wb <D14 <Wc). As a result, the end portion (step portion sp) of the tip portion 11c is arranged within the range of the end portion of the driven cylinder 14, and the end portion of the driven cylinder 14 abuts on the step portion sp of the cylinder body 11 by the slide of the driven cylinder 14. It has become like. Therefore, the step portion sp of the cylinder body 11 can stop the sliding of the driven cylinder 14.

On the other hand, when the plate surface of the grip ring 13 is inclined with respect to the tubular body 11 and the opening edge of the opening 13p of the grip ring 13 is pressed against the outer circumference 11bS of the intermediate portion 11b of the tubular body 11, the grip ring 13 becomes a tubular body. It is configured to be hooked on the intermediate portion 11b of 11. As a result, the driven cylinder 14 cannot be slid by the gripping wheel 13. At this time, the virtual line F of the grip ring 13 intersects the axis O of the tubular body 11 extending in the vertical direction diagonally.

Specifically, FIG. 3A is a partial vertical sectional view showing a state in which an obstacle is caught on the first end portion of the gripping ring when the metal fitting is dragged upward. As shown in FIG. 3A, when the obstacle X is caught on the first end 13a of the grip ring 13 when the metal fitting 10 is dragged upward indicated by the arrow U, the entire grip ring 13 is counterclockwise. Rotating around, the first end 13a moves downward and the second end 13b moves upward, the plate surface of the grip ring 13 tilts, and the grip ring 13 becomes a cylinder. It is caught in the middle portion 11b of 11. In this state, the virtual line F of the grip ring 13 extends from the lower left to the upper right or from the upper right to the lower left and intersects the axis O of the tubular body 11 diagonally. Here, the first end portion 13a and the second end portion 13b are bilaterally symmetrical or anteroposteriorly symmetrical ends centered on the axis O of the tubular body 11. In the illustrated example, the first end portion 13a is the left end portion of the grip ring 13, and the second end portion 13b is the right end portion of the grip ring 13.

On the other hand, FIG. 3B is a partial vertical cross-sectional view showing a state in which an obstacle is caught on the second end portion of the grip ring when the metal fitting is dragged upward. As shown in FIG. 3B, when the obstacle X is caught on the second end 13b of the grip ring 13 when the metal fitting 10 is dragged upward, the entire grip ring 13 rotates clockwise. Then, the second end portion 13b moves downward and the first end portion 13a moves upward, the plate surface of the grip ring 13 is inclined, and the grip ring 13 is the intermediate portion 11b of the tubular body 11. Get caught in. In this state, the virtual line F of the grip ring 13 extends from the lower right to the upper left or from the upper left to the lower right and intersects the axis O of the tubular body 11 diagonally.

Similarly, FIG. 4A is a partial vertical sectional view showing a state in which an obstacle is caught on the first end portion of the gripping ring when the metal fitting is dragged downward. As shown in FIG. 4A, when the obstacle X is caught on the first end portion 13a of the grip ring 13 when the metal fitting 10 is dragged downward as indicated by the arrow D, the entire grip ring 13 is clocked. Rotating around, the first end 13a moves upward and the second end 13b moves downward, the plate surface of the grip ring 13 is tilted, and the grip ring 13 becomes a cylinder. It is caught in the middle portion 11b of 11. In this state, the virtual line F of the grip ring 13 extends from the upper left to the lower right or from the lower right to the upper left and intersects the axis O of the tubular body 11 diagonally.

On the other hand, FIG. 4B is a partial vertical cross-sectional view showing a state in which an obstacle is caught on the second end of the gripping ring when the metal fitting is dragged downward. As shown in FIG. 4B, when the obstacle X is caught on the second end portion 13b of the gripping ring 13 when the metal fitting 10 is dragged downward, the entire gripping ring 13 rotates counterclockwise. By moving, the second end 13b moves upward and the first end 13a moves downward, the plate surface of the grip ring 13 is inclined, and the grip ring 13 is in the middle of the cylinder 11. It gets caught in the part 11b. In this state, the virtual line F of the grip ring 13 extends from the upper right to the lower left or from the lower left to the upper right and intersects the axis O of the tubular body 11 diagonally.

As described above, even if the metal fitting 10 is dragged in any of the up and down directions, and even if an obstacle is caught on any of the front, rear, left, and right ends of the grip ring 13, the plate surface of the grip ring 13 is the axis of the tubular body 11. The grip ring 13 is tilted with respect to O so as to be hooked on the tubular body 11. As a result, it is possible to prevent the gripping wheel 13 from sliding the driven cylinder 14 when the metal fitting 10 is dragged.

FIG. 5 is a vertical cross-sectional view of the plug-in type joint according to the embodiment of the present invention. As shown in FIG. 5, the plug-in type joint 100 has a metal fitting 10 and a metal fitting 30. The metal fitting 10 is the same as the metal fitting 10 described above, and the metal fitting 30 is the same as the conventional metal fitting 30, and the same parts are designated by the same reference numerals, and the description thereof will be omitted. The receiving metal fitting 30 has a hollow tubular shape, and a plurality of claws 32a, 32b, 32c are freely provided in the receiving port. The metal fitting 10 has a hollow tubular shape, and a recess 11 g is provided on the outer periphery thereof. As shown in FIGS. 1 and 2, the recess 11g has a concave groove shape that circulates around the axis O of the cylinder 11, and is surrounded by the driven cylinder 14, the intermediate portion 11b of the cylinder 11, and the step portion sp. ing. The recess 11g is configured to be openable and closable by sliding the driven cylinder 14, and is configured so that a plurality of claws 32a, 32b, 32c of the receiving metal fitting 30 can be inserted. Returning to FIG. 5, this allows the recesses 11g to be closed and the metal fittings 10 and the receiving metal fittings 30 to be separated by sliding the driven cylinder 14 with the plurality of claws 32a, 32b, 32c inserted into the recesses 11g. It has become.

When the plug-in joint 100 configured as described above is inserted into the socket of the metal fitting 30, the plurality of claws 32a, 32b, 32c of the metal fitting 30 are inserted into the recess 11g of the metal fitting 10. Then, the insertion fitting 10 and the receiving fitting 30 are connected. In this state, when the plate surface of the grip ring 13 of the metal fitting 10 is set to be orthogonal to the axis O of the tubular body 11, the grip ring 13 is slid downward and the driven cylinder 14 is slid downward, and the recess 11 g Closes and the plurality of claws 32a, 32b, 32c come off from the recess 11g, and the insertion bracket 10 and the receiving bracket 30 are separated. On the other hand, when the plate surface of the gripping ring 13 of the metal fitting 10 is tilted and the gripping ring 13 is caught on the cylinder 11, the driven cylinder 14 is not slid and the recess 11g is not closed. The connection between the insert fitting 10 and the receiving fitting 30 is maintained without the claws 32a, 32b, and 32c coming off.

In the present embodiment, in the plug-in type coupling joint 100, when the plate surface of the grip ring 13 of the fitting 10 is in an orthogonal posture with respect to the axis O of the cylinder 11, the driven cylinder 14 is slid by the slide of the grip ring 13. The fitting 10 and the receiving metal fitting 30 can be separated, but when the plate surface of the gripping ring 13 of the fitting 10 is tilted with respect to the axis O of the tubular body 11 and the gripping ring 13 is caught on the outer periphery of the tubular body 11, it is driven. Since the cylinder 14 cannot be slid and the connection between the insertion fitting 10 and the receiving metal fitting 30 is maintained, the connection between the insertion fitting 10 and the receiving metal fitting 30 is released when the plug-in type coupling joint 100 is dragged. It can be prevented from being lost.

In this embodiment, the grip ring 13 of the metal fitting 10 is formed to have a larger diameter than the driven cylinder 14, and the inner diameter D13 of the opening 13p of the grip ring 13 is larger than the outer diameter Wb of the intermediate portion 11b of the cylinder body 11 and the driven cylinder. Since the outer diameter of 14 is set to be smaller than W14 (Wb <D13 <W14), the end portion of the driven cylinder 14 is arranged within the range of the plate surface of the grip ring 13, so that the driven cylinder 14 is driven by the slide of the grip ring 13. The cylinder 14 can be slid

It should be noted that the fitting 10 and the plug-in joint 100 of the present embodiment are not limited to the above illustrated examples, and it goes without saying that various changes can be made without departing from the gist of the present invention. is there. For example, the outer peripheral portion 11bS of the intermediate portion 11b in the tubular body 11 of the metal fitting 10 is smoothly formed, but the outer peripheral portion 11bS of the intermediate portion 11b in the tubular body 11 may be formed with irregularities. As a result, the gripping ring 13 can be easily hooked on the intermediate portion 11b of the tubular body 11. The unevenness may be a plurality of convex portions orbiting around the axis O of the tubular body 11, a plurality of small cones or pyramids, or the outer peripheral portion 11bS of the intermediate portion 11b in the tubular body 11 is rough. It may be formed on a surface.

Further, although the outer diameter W14 of the driven cylinder 14 of the metal fitting 10 is set to be larger than the outer diameter Wc of the tip portion 11c of the cylinder 11 (W14> Wc), it may be smaller (W14 <Wc), but the driven cylinder 10 may be driven. The outer diameter 14 of the cylinder 14 and the outer diameter Wc of the tip end portion 11c of the cylinder 11 may be the same (W14 = Wc).

The grip ring 13 of the metal fitting 10 has an annular planar shape, but the grip ring 13 may have any planar shape as long as the plate surface can be grasped by the grip ring 13 by hand. For example, an annular grip ring 16 having one cutout may be used (FIG. 6 (a)), or an annular grip ring 17 having two notched points facing each other may be used (FIG. 6 (b)). , An elliptical grip ring 18 (FIG. 6 (c)), or a quadrangular grip ring 19 with rounded corners (FIG. 6 (d)). Further, the planar shape of the grip ring 13 may be a triangle, a quadrangle, a five-drawing shape, a hexagon, or a larger polygonal shape. Of these, the gripping rings 16, 17 and 18 shown in FIGS. 6 (a) to 6 (c) are provided with portions having a small radial width and length, so that the gripping rings 16, 17 and 18 are less likely to be caught by an obstacle. be able to.

100,200 ... Plug-in joint, 10,20 ... Insert, 11 ... Cylinder, 11a ... Mounting base, 11b ... Intermediate, 11bS ... Outer circumference, 11c ... Tip, 11ce, 13a, 13b ... End, 11cu, 14u ... upper part, 11g, 21g ... concave, 13 ... gripping ring, 13d, 14d ... lower part, 13p, 14p ... opening, 14 ... driven cylinder, 15 ... retaining ring, 22 ... push ring, 22a ... tubular part, 22f ... Flange, 30 ... Retaining ring, 32a, 32b, 32c ... Claw, D, U ... Arrow, D13, D14 ... Inner diameter, F ... Virtual line, Ha, Hb ... Fire hose, O ... Axis line, W13, W14, Wb, Wc ... outer diameter, X ... obstacle, θ ... angle

Claims (5)

A hollow tubular body with a mounting base and tip to which other members can be mounted,
A plate-shaped grip ring with an opening and
It has a hollow tubular driven cylinder arranged on the tip end side of the gripping ring.
A metal fitting characterized in that the gripping wheel and the driven cylinder are slidably engaged with the cylinder so as to be adjacent to each other. The first aspect of the present invention is characterized in that the driven cylinder can be slid by sliding the gripping ring when the plate surface of the gripping ring is oriented orthogonal to the axis of the cylinder. Insertion bracket. An intermediate portion is provided between the mounting base portion and the tip portion of the tubular body, and the intermediate portion of the tubular body is inserted into the opening of the gripping ring and the driven cylinder, and the gripping ring is inserted. Is formed to have a larger diameter than the driven cylinder, and the inner diameter of the opening of the gripping ring is set to be larger than the outer diameter of the intermediate portion of the cylinder and smaller than the outer diameter of the driven cylinder. The fitting according to claim 1 or 2. The fitting according to claim 3, wherein an unevenness that imparts frictional resistance is formed on the outer periphery of the intermediate portion of the cylinder. The fitting according to any one of claims 1 to 4, and
It has a hollow tubular bracket with a plurality of claws that can freely appear and disappear in the socket.
When the driven cylinder is moved to the tip side in a state where the plurality of claws of the receiving metal fitting are caught on the cylinder body of the fitting and the fitting and the receiving metal fitting are connected, the plurality of claws are brought into the cylinder. A plug-in type coupling joint characterized in that the insert fitting and the receiving fitting are separated from the body.

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