JP3393287B2 - Hose connection fitting - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose connecting fitting used for connecting fire hoses and the like.

[0002]

2. Description of the Related Art Conventionally, an example of a connecting fitting used for connecting a fire hose or the like is formed as shown in FIG. Since the present invention is an improvement on the above-described conventional connecting fitting, first, the conventional connecting fitting will be described. In the figure, reference numeral 71 denotes a connecting metal fitting, which is composed of an inserting metal fitting 72 and a receiving metal fitting 73. 74 is a metal fitting 7
2 is a screw part formed on the surface of which a male screw is formed. Further, reference numeral 75 denotes a mounting portion, which is an annular body provided in the receiving metal fitting 73 so as to be idle, and has an inner surface 7
A female screw threaded on the screw portion 74 is formed at 6. Reference numeral 77 is a rubber packing, and 78 is an expanding ring.
A hose 79 is pressed against and held at the position 1. The expanding ring 78 is used not only in this conventional example but also in the embodiment of the present invention, but it is omitted. Reference numeral 80 denotes a holding portion having a substantially sawtooth cross section. When using, the screw part 74 is attached to the mounting part 75.
It is adapted to be used and screwed, and the mounting portion 75 is rotated to advance the screw, thus connecting and using. It should be noted that this screwing is due to the rotation of nearly twice.

[0003]

However, the conventional connecting fittings have the following drawbacks. That is, first, the connecting metal fitting is divided into two types, that is, the metal fitting 72 and the metal fitting 73. In an emergency fire scene, there is a possibility that the hose connection may cause the hose connection 72 to correspond to the hose connection 72 of another hose (not shown). This fear is prevented by training, but it is not inevitable. When connecting the connecting metal fittings, the receiving metal fitting 7
The rotation of 3 for screwing has to be performed twice as an example, and although it is a short time, it is inevitable that time loss and troublesome work will be required in case of emergency. The present invention has been made to solve such a problem, and its purpose is to eliminate the possibility of positioning the fittings 72 and the like in a corresponding manner at the time of connection, and because of the screwing. Since it does not need to rotate about twice, it can be done with only a few rotations that have never been seen at one time, so the time and labor in an emergency can be greatly reduced compared to the conventional ones. It is another object of the present invention to provide a hose connecting fitting that can be handled by an extremely simple operation and can be connected reliably, in a connecting fitting that can solve the above problems.

[0004]

The present invention, which achieves the above-mentioned object, is described as follows. It is formed of a metal into a cylindrical shape, holds a packing 2 at one axial end portion 1, and has an internal portion 3 in the axial direction. A base cylinder 7 in which a hose fixing portion 6 is formed in the direction from the middle 4 to the other end 5; a metal cylindrical rotating portion 8 rotatably fitted to the outer periphery of the base cylinder 7, and the rotating portion. A connecting ring 10 formed integrally with the portion 8 and having a diameter larger than that of the rotating portion 8 and including an annular connecting portion 9; An axial movement of the connecting ring 10 provided on the base cylinder 7 is prevented. A front stopper 11 and a rear stopper 12; an internal partial thread 13 which is a part of the connecting portion 9 in the circumferential direction and is formed on the inner side in the axial direction: in the circumferential direction of the connecting portion 9 and the internal partial thread 13. Correspondingly formed external partial thread 14 projecting in the axial direction of the connecting ring 10. In the connecting ring 10, of the inner portion screw bar 13, provided corresponding to the forward end 15 of the screwing, the other in later connector 17 connector 17
A connecting member 17 composed of a stopper 16 for controlling the unscrewing of the outer partial thread 14; a connecting member for a hose constructed by combining two of the connecting members 17. Further, the stopper 16 allows the outer partial thread 14 of the other connecting tool 17 to rotate in the screwing direction, engages with respect to the screwing direction rotation, and the engagement does not occur. It is a connecting fitting of the hose that is formed so as to be released. In addition, the stopper 16 is 1 in the middle of the length direction.
8 is an operating piece 20 in which the connecting ring 10 is pivotally attached 19 to the connecting ring 10.
The pressing portion 22 having the spring 21 provided between it and the rotating portion 8 is formed on one side of the shaft attachment portion 19, and the arm 23 is provided on the other side. A claw 26 that goes in and out of a hole 25 formed corresponding to the end 24 of the partial thread 13
Is a connecting fitting for the hose. The claw 26 has a side surface 27 facing outwardly formed at an acute angle 28 with respect to the inner partial thread 13, and a side surface 37 facing inwardly formed at an angle 38 of a substantially right angle. It is a connecting fitting. Further, the arm 23 has a spacer portion 30 that abuts a pedestal 34 formed on the connecting portion 9 in the hole 25,
It is a connecting fitting for the hose. Further, the shaft attachment portion 19 is provided on the side wall 29 of the connection portion 9, and the pressing portion 22 and a part of the arm 23 are connection fittings for the hose provided along the side wall 29. Further, the inner partial thread 13 is a connecting fitting for the hose whose length 31 is formed longer than the length 32 of the outer partial thread 14. The connecting portion 9 is a connecting fitting for the hose, which has a protrusion 33 between the inner partial thread 13 and the outer partial thread 14. Further, the rear stopper 12 is a connecting fitting of the hose which is detachably mounted on the base cylinder 7.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In FIGS. 1 to 3, 7 is a metal,
As an example, the base cylinder is made of aluminum and has a cylindrical shape, and an annular packing 2 made of rubber is held at one axial end 1 of the base cylinder. Reference numeral 35 is a groove-shaped holding portion, and the packing 2 is press-fitted into the holding portion 35. Reference numeral 6 is a fixing portion for fixing a hose (not shown). And the base cylinder 7
A cylindrical rotating portion 8 made of metal, for example, aluminum, is rotatably fitted around the outer periphery of the rotating body 8. Reference numeral 9 denotes an annular connecting portion that is integrally provided with the rotating portion 8 and has a diameter larger than that of the rotating portion 8. A connecting ring 10 is formed by the both 8 and 9. Reference numerals 11 and 12 denote a front stopper and a rear stopper, respectively, which prevent the connecting ring 10 from moving in the axial direction. After this, the stopper 12 is formed by a metal ring in which a part press-fitted in an annular groove 36 formed on the outer periphery of the other end 5 of the base cylinder 7 is cut off. A metal ring, a part of which is separated, is provided in the groove 36 so as to be detachable in the form of a spring.

Next, 13 is an inner partial thread of a partial female screw formed inside the one end portion 1 of the base cylinder 7 at the same axial position in the connecting portion 9. The length 31 was formed to 100 mm as an example. Then 1
Reference numeral 4 denotes an outer partial thread of a partial male screw which is provided in a portion corresponding to the inner partial thread 13 in the circumferential direction of the connecting portion 9, and as shown in the drawing, is an external partial thread of the base cylinder 7 in the axial direction. It is provided so as to project from the one end 1. And its length 32
Was formed to 68 mm as an example. Reference numeral 16 denotes a stopper provided corresponding to the end portion 15 of the inner partial thread 13 which is a front portion at the time of screwing, and the stopper 16 is provided on the inner partial thread 13 to be described later. When the outer partial thread 14 of the connecting tool 17 is screwed, the screwing is controlled. As shown in FIG. 4, the stopper 16 is provided with an operating piece 2
0 is pivotally attached 19 to the side wall 29 of the connecting portion 9 in the middle of its longitudinal direction 18, and a pressing portion 22 is formed on one side thereof. Is provided. An arm 23 is formed in a direction opposite to the pressing portion 22, and the pressing portion 22 and a part of the arm 23 are provided along the connecting portion 9. Next, the arm 23 is connected to the connecting portion 9
The claw 26 is bent in the direction, and the claw 26 is provided at the bent portion, and the claw 26 is formed so as to be able to enter and leave the hole 25 formed in the connecting portion 9.

As shown in FIG. 5, the claw 26 has an angle 2 of a side surface 27 facing outward with respect to the internal thread 13.
8 is formed in an acute angle, and the angle 38 of the side surface 37 facing inward is formed substantially at a right angle. Further, in FIG. 4, reference numeral 30 denotes a spacer portion, which abuts the pedestal 34 in the hole 25 and defines a constant depth of the claw 26 to enter the hole 25. Since the pressing portion 22 is provided in the circumferential direction along the connecting portion 9, it can be easily pressed with the thumb while holding the connecting tool, and can be easily screwed. Further, when the operating piece 20 is assembled, the upper surface thereof is formed in an arc shape that is substantially the same as the connecting portion 9 and is formed so as to be substantially the same surface as the connecting portion 9, so that it is rough at a fire site. The risk of damage can be reduced even when handled with. Reference numeral 17 is a connecting member configured as described above, and this connecting member 17 is another connecting member 1 having the same structure.
The two of No. 7 are combined as a pair to form a hose connecting fitting. In FIG. 3, 39 indicates a knurl. When using this connecting fitting, fix the hose 6
Fix the hose (not shown).

In this case, the expanding ring 78 is used as in the conventional example, but the illustration and description thereof are omitted. And to connect the connecting tools 17 to each other,
The outer thread 14 of one of the connectors 17 is connected to the other connector 1
It is applied so as to be screwed onto the inner partial thread 13 of 7 and the connecting portion 9 of one of the connecting tools 17 is rotated in the screwing direction. Then, the outer partial thread 14 comes into contact with the claw 26 of the stopper 16 of the other connecting tool 17, but the claw 26 is formed with an acute angle 28 on the side surface 27 of the inner partial thread 13 facing outward. Therefore, the operating piece 20 is pushed up by the outer partial thread 14 and presses the spring 21 to rotate, thereby allowing the outer partial thread 14 to pass.

When the outer partial thread 14 is screwed into the inner partial thread 13, the claw 26 of the stopper 16 that has been pushed up makes a noise and automatically enters the hole 25. Then, the angle 38 of the side surface 37 of the pawl 26 facing the inner side of the internal thread 13 is formed at a substantially right angle, so that the claw 26 cannot be unscrewed as it is and is thus fixed. That is, the claw 26
The sound of can be used as a sign of this fixed confirmation. The two connecting tools 17 are thus connected and fixed. In this case, the packings 2 are in pressure contact with each other, and leakage of fluid is prevented. Next, when removing the connecting tools 17 from each other, both connecting tools 1
7 Press the pressing portions 22 of the stoppers 16 of each other,
The claws 26 and the external thread 14 are unlocked, and the connecting members 17 are screwed. This is how it is removed.

[0010]

Since the connecting fitting of the hose of the present invention is configured as described above, the invention of claim 1 positions the fittings in correspondence with each other at a fire site or the like as in the conventional example. You can eliminate fear altogether. Moreover, the operation is performed by connecting the connecting portion 9 of the connecting tool 17 to the other connecting tool 1
Since it suffices to rotate the connecting portion 9 of 7 by approximately 90 degrees,
In an emergency, the labor and time required for connection can be greatly reduced as compared with the conventional one. According to the second aspect of the present invention, when the connecting portions 9 of the connecting tool 17 are screwed with each other, the stopper 16 is not operated and the work stroke in an emergency can be largely omitted. Further, since the stopper 6 emits sound when it engages with the external thread 14, the engagement or connection can be confirmed. According to the third aspect of the present invention, since the actuating piece 20 of the stopper 16 is formed into a lever shape and presses the pressing portion 22, it is possible to extremely easily and with a small force, the inner portion thread 13 between the connecting tools. The external screw thread 14 can be unscrewed. In the invention of claim 4, the stopper 16 can be formed in one way, and the inner partial thread 13
The resistance at the time of screwing the outer partial thread 14 can be extremely reduced. Further, the screwing can be fixed. According to the fifth aspect of the invention, the depth of penetration of the claw 26 of the stopper 16 into the hole 25 can be regulated with a simple structure. The invention of claim 6 protects the operating piece 20 of the stopper 16 from being healed by the annular connecting portion 9 against rough handling such as throwing the connecting metal fitting to the ground at an emergency fire site, etc. The risk of damage can be reduced. Further, since the rotating portion 8 is cylindrical, a sufficient space can be provided between the rotating portion 8 and the pressing portion 22, and the stroke for rotating the operating piece 20 by pressing the pressing portion 22 can be increased. The invention of claim 7 can be operated in an emergency such as a fire without strictly considering the amount of screwing of the outer partial thread 14. According to the invention of claim 8, the outer partial thread 14 may be located on the opposite side of the projection 33 when connecting the connecting parts to each other, so that the position to which the outer partial thread 14 should be applied can be quickly known. The invention according to claim 9 can make the assembling of the connector extremely easy.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a hose connecting fitting according to an embodiment of the present invention.

FIG. 2 is a rear view of the connector of the hose connector.

FIG. 3 is a perspective view of a connector of a hose connector.

FIG. 4 is a perspective view showing details of a portion of the connector shown in FIG.

5 is a cross-sectional view of a further part of the portion of the connector shown in FIG.

FIG. 6 is a partial cross-sectional view of a conventional hose connecting fitting.

[Explanation of symbols]

1 one end 2 packing 3 inside 4 along the axis 5 other end 6 fixed part 7 base cylinder 8 Rotating part 9 connection 10 connecting rings 11 Front stopper 12 Rear stopper 13 Internal thread 14 External thread 15 edge 16 stopper 17 Connector 18 On the way in the length direction 19 Shaft attachment part 20 working pieces 21 spring 22 Pressing part 23 arms 24 edge 25 holes 26 nails 27 sides 28 angles 29 Side wall 30 Spacer 31 length 32 length 33 protrusions

Claims (9)

(57) [Claims] 1. A cylindrical shape made of a metal, holding a packing 2 at one end 1 in the axial direction, and forming a fixing portion 6 of a hose from an intermediate portion 4 in the axial direction to an end portion 5 in an inner portion 3. Base cylinder 7; metal cylindrical rotating part 8 rotatably fitted to the outer periphery of the base cylinder 7 and a diameter larger than the rotating part 8 provided integrally with the rotating part 8. A connecting ring 10 composed of an annular connecting portion 9; a front stopper 11 and a rear stopper 12 provided on the base cylinder 7 for preventing the connecting ring 10 from moving in the axial direction; Partial and axially inner thread 13 formed inward in the axial direction: in the circumferential direction of the connecting portion 9,
The connecting ring 1 is formed corresponding to the inner partial thread 13.
External thread 1 projecting in the axial direction of 0
4; in the connecting ring 10, of the internal thread 13
A connector 17 comprising a stopper 16 provided to correspond to the front end portion 15 in the screwing and controlling the unscrewing of the outer partial thread 14 of the other connector 17 in the connector 17 described later; A hose connecting fitting made by combining the two. 2. The stopper 16 allows rotation of the outer partial thread 14 of the other connecting tool 17 with respect to rotation in a screwing direction, and engages with rotation with respect to rotation in a screwing direction. The hose connecting fitting according to claim 1, wherein the bite is formed to be releasable. 3. The stopper 16 has a middle portion 18 in the longitudinal direction,
It is composed of an operating piece 20 pivotally attached to the connecting ring 10 in a lever-like manner. A pressing portion 22 having a spring 21 between it and the rotating portion 8 is formed on one side of the axis attaching portion 19, and an arm 23 is provided on the other side. Have
The end portion 2 of the inner partial thread 13 of the connecting portion 9 is connected to the arm 23.
4. The hose connecting fitting according to claim 2, further comprising: a claw 26 that is inserted into and removed from the hole 25 formed corresponding to 4. 4. The pawl 26 has a side surface 27 facing outwardly formed at an acute angle 28 with respect to the inner partial thread 13, and a side surface 37 facing inwardly formed at an angle 38 of a substantially right angle. The hose connector according to claim 3. 5. The hose connecting fitting according to claim 3, wherein the arm 23 has a spacer portion 30 that abuts a pedestal 34 formed in the connecting portion 9 in the hole 25. 6. The shaft mounting portion 19 is provided on the side wall 29 of the connecting portion 9, and the pressing portion 22 and a part of the arm 23 are provided along the side wall 29. Hose connecting metal fittings. 7. The hose connection according to claim 1, wherein the inner partial thread 13 is formed such that its length 31 is longer than the length 32 of the outer partial thread 14. Metal fittings. 8. The connection part 9 has a protrusion 33 between the inner part thread 13 and the outer part thread 14, and the connection part 9 has a projection 33.
A hose connecting fitting according to 4, 5, 6 or 7. 9. The hose connecting fitting according to claim 1, wherein the rear stopper 12 is detachably mounted on the base cylinder 7.