JP2010139061A - Hose connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector used for connecting a hose or a tube made of synthetic resin or the like. <P>SOLUTION: In this connector, a sleeve 10 is attached to a nipple 1, and after inserting the hose 100 to the sleeve 10, fastening from an outer peripheral surface of the sleeve 10 is performed by a fastening means. A claw 22 biting in an outer peripheral surface of the hose 100 through a slit 23 formed in an axial direction is formed on a peripheral end of the sleeve 10. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention is a connector used for connecting a hose or tube made of synthetic resin or the like.

Description will be made with reference to FIG. 8A showing a cross section of a connector used for conventional hose connection and FIG. 8B showing a cross section of hose connection.
A rotating head 100a for a wrench is formed at the center of the connector 100, and a screw 100b for mounting the device is formed on the left side. On the other hand, the cylindrical insertion part 100c for hose insertion is formed in the right side of the rotation head 100a. Further, a convex portion 100d is formed in the circumferential direction on the outer peripheral surface of the insertion portion 100c, and the outer diameter thereof is formed approximately 1.1 times the inner diameter of the hose.
On the other hand, the hose 101 has a spiral reinforcing protrusion 101a formed on the outer peripheral surface, and its tip is inserted into and connected to the insertion portion 100c of the hose connector. The so-called hose 101 is inserted into a bamboo nipple nipple. The
Then, the hose band 103 is fastened and fixed and connected. The convex portion 100d is
The hose 101 inserted is prevented from being removed.

JP 2001-193881 A

In the connection of the conventional method, since the hose insertion part 100c has an outer diameter 1.1 times or more than the inner diameter of the hose, the flexible hose can be swelled and inserted into the insertion part, In the hose 101 in which reinforcement is applied as shown in FIG. 8B, the purpose of reinforcement is to prevent swelling and flattening, so that it is difficult to swell, so the hose is inserted into the hose insertion part 100c of the nipple. Could not be done easily.
Therefore, a hose in which such reinforcement has been applied requires an operation such as forcibly inserting the hose into a nipple insertion portion after making the hose flexible by heat or the like.
Further, in the method of fastening the hose 101 with the hose band 103, the insertion portion 100c and the hose band 103 are separated.
This method is simple, but when used for many years, especially with resin hoses, permanent distortion occurs in the connection part due to secular change, and the tightening force of the hose band gradually decreases and leaks, or nipples Caused the hose to come off.
Therefore, the present invention provides a connector that eliminates such inconvenience.

  In the connector of the first aspect, when a sleeve is attached to a nipple having a hose insertion portion, a space portion into which the hose can be inserted is formed in the sleeve. Then, after inserting the hose into the space portion, the connector is tightened in the inner diameter direction by the tightening means from the outer peripheral surface of the terminal end portion of the sleeve extending on the opposite side to the mounting portion of the sleeve to the nipple. The claw body formed at the terminal end of the sleeve is reduced in the inner diameter direction, the outer periphery of the hose is pressed in the inner diameter direction, and the hose insertion part of the nipple is strongly pressed on the inner surface of the hose, whereby the nipple and the hose can be fixed. Further, the claw body portion is formed in a circumferential shape through a slit, and the claw is formed in a circumferential shape on the inner peripheral surface of the claw body portion. The connector and the hose are fixed by biting into the outer peripheral surface of the hose and simultaneously pressing the hose insertion part of the nipple strongly with the inner surface of the hose.

Further, in the connector according to the second aspect, deformation irregularities are formed on the outer peripheral surface of the insertion portion of the nipple so that the inner peripheral surface of the hose bites, and when the hose band is tightened from the outer peripheral surface of the sleeve, the hose extends in the inner peripheral direction. Compress. Thereby, deformation irregularities formed in the hose insertion portion of the nipple bite into the inner peripheral surface of the hose and are fixed.
In the connector of claim 3, the elastic cap and the claws simultaneously bite into the outer peripheral surface of the hose when the hose band is tightened from the outer peripheral surface of the sleeve by covering the end of the hose on the side to be inserted into the sleeve. It can be tightened more firmly by the double pressing action.
In the connector according to claim 4, the hose band guide groove is formed on the outer peripheral surface on the right side of the sleeve, so that the hose band does not come off or shift.

The connector according to claim 5 has a crescent, trapezoidal, or parallelogram cross-sectional shape of the claw body that is separated by the slit and formed over the circumference.
If the cross-sectional shape of the nail body is crescent, the contact area between the hose band and the hose band guide groove is small, so that it can be tightened with low torque.
If the cross-sectional shape of the claw body is a trapezoid or a parallelogram, the slit can be closed without a gap when tightened with a hose band.

  In the connector of claim 6, the claw may be formed in a spiral shape (screw shape) on the inner peripheral surface of the claw body portion of the sleeve, and in this case, the claw is disposed in the spiral groove of the hose reinforcing material. The outer peripheral portion of the hose, which is a valley portion of the hose reinforcing material, is pressed by the crest portion of the sleeve, and at the same time, the outer diameter portion of the reinforcing material of the hose can be pressed and fixed by the valley portion of the claw of the sleeve. Further, the claw may be formed in one or more ring shape on the inner peripheral surface of the claw body portion, and when the number of rings becomes plural, the outer peripheral surface of the hose is pressed more strongly, and the hose and the connector are connected. It can be fixed more intensely.

  According to a seventh aspect of the present invention, when the connector has a saw-blade-like irregularities formed on the inner peripheral surface of the claw body extending from the sleeve and is tightened by a fastening means, the saw-blade irregularities are Cut into the outer surface of the hose parallel to the circumference. At this time, the hose and the connector can be firmly fixed in order to bite into the hose widely in the longitudinal direction.

  In the connector according to claim 8, by inserting the elastic member into the inner peripheral surface of the claw body portion of the sleeve, the elastic member is pressed at the same time as the claw main body portion of the sleeve is reduced in the inner peripheral surface direction, and the elastic member is also reduced. The connector and the hose can be fixed by biting into the outer peripheral surface of the hose and simultaneously pressing and fixing the hose insertion portion of the nipple on the inner surface of the hose.

  In the connector according to the ninth aspect, the sleeve fitting portion of the nipple has a polygonal shape, and the fitting side surface of the fitting portion of the sleeve has the same concave shape as the polygon of the nipple. After the fitting, the polygon of the nipple and the concave polygon of the sleeve are overlapped and fixed. As a result, the nipple and the sleeve are integrated, and it is possible to prevent the fitting portion from idling even if the sleeve is rotated.

  In the connector according to the tenth aspect, for example, when the nipple is attached to the equipment, a construction taper screw is screwed into the equipment. At this time, the rotary head is rotated and screwed with a tool such as a spanner. However, the rotary head having only the sleeve may not be able to withstand the tightening torque due to the resin and may be deformed. Therefore, if the rotating head of the nipple and the rotating head of the sleeve are flush with each other and this portion is simultaneously rotated with a tool such as a spanner, it will not be deformed.

The connector of the present invention can be firmly tightened via a sleeve or the like by tightening with a tightening means.

(A) is a partial front sectional view of the connector before assembly, and (B) is a partial front sectional view of the connector after assembly. (A) is a left side view of the nipple, and (B) is a partial front sectional view of the nipple. (A) is a partial front sectional view of the sleeve, and (B) is a right side view. It is a front fragmentary sectional view of the elastic cap with which the end part of the hose was equipped. It is a figure which shows a hose band. It is a front fragmentary sectional view of a nipple and a sleeve connected with a screw. (A)-(C) are AA sectional drawings of FIG. 3 of various sleeves. It is a cross section of the conventional connector. (A) is a partial front sectional view of the connector before assembly, and (B) is a partial front sectional view of the connector after assembly. (A) is a partial front sectional view of a member in which the nipple and the sleeve are integrated, (B) is a right side view of the member in which the nipple and the sleeve are integrated, and (C) is an outer peripheral surface of the nipple and the sleeve. It is a front fragmentary sectional view of the member which united and integrated. (A) is front sectional drawing of a nipple, (B) is a right view of a nipple. (A) is a left side view of the sleeve, (B) is a partial front sectional view of the sleeve having pawls arranged in a spiral shape on the circumference (C) is a right side view of the sleeve, and (D) is a ring on the circumference (E) is a partial front sectional view of a sleeve provided with a plurality of claws arranged in a ring shape around the circumference. It is a front fragmentary sectional view of a cap nut. (A) is a partial front sectional view of a sleeve in which sawtooth-shaped irregularities are formed on the inner peripheral surface of the sleeve, and (B) is a sleeve in which sawtooth-shaped irregularities are formed on the inner peripheral surface of the sleeve. FIG. 4C is a partial front sectional view before tightening the connector, and FIG. 6C is a partial front sectional view after tightening the connector in which a sleeve having saw-blade irregularities is formed on the inner peripheral surface of the sleeve.

A hose connector will be taken up as a connector of the present embodiment and will be described with reference to the drawings.
1A is a partial front sectional view of the connector before assembly, FIG. 1B is a partial front sectional view of the connector after assembly, FIG. 2A is a left side view of the nipple 1, and FIG. FIG. 3A is a partial front sectional view of the sleeve 10, FIG. 3B is a right side sectional view, FIG. 4 is a partial front sectional view of the hose 100 and the elastic cap 30, and FIG. It is a figure which shows the band.

2A is a left side view of the nipple 1 that is a component, and FIG. 2B is a partial cross-sectional view of the front. The cylindrical nipple 1 made of metal or the like has a wrench on the outer peripheral surface at substantially the center. The rotating head 1a is formed, and a device screw 1b for mounting the device is formed on the left side of the rotating head 1a.
On the other hand, a sleeve crimp groove 11 for fitting a sleeve 10 to be described later is formed on the right outer peripheral surface of the rotating head 1a, and a slightly protruding sleeve removal prevention collar 12 is formed on the right side thereof. It is.
Further, an insertion part 2 into which a hose or the like can be inserted extends from the right part of the nipple 1, and a deformation unevenness 3 that the inner peripheral surface of the hose bites into the outer peripheral surface of the insertion part 2. It is formed.
In addition, although this deformation | transformation unevenness | corrugation 3 may arrange the same uneven | corrugated shape, here, the deformation | transformation unevenness | corrugation 3 arranges large and small unevenness | corrugation so that it can clamp more firmly, for example, FIG.2 (B) As shown in FIG. 2, a combination of two small irregularities 3a and one large irregularity 3b is arranged.
Moreover, the attachment method of the apparatus in the left side of the nipple 1 should just be couple | bonded via a band etc. other than the said apparatus screw 1b form, and is made to respond | correspond suitably with the kind of apparatus.

  3A is a front sectional view of the sleeve 10, FIG. 3B is a sectional view taken along the line A-A of FIG. 3A, and the sleeve 10 is a cylindrical body made of resin having an elastic action, and left Half thickness is formed thicker than right half thickness. Further, on the inner peripheral surface of the cylindrical body 10 of the thick left portion 10a, there is formed a crimp flange 15 that fits into the sleeve crimp groove 11 formed on the outer peripheral surface of the nipple 1, and the sleeve slip-off preventing flange is formed. A retaining collar 16 that is crimped to 12 is formed with a slightly larger diameter than the crimp collar 15.

A hose band guide groove 19 for tightening a hose band 35 to be described later is formed on the outer peripheral surface on the right side of the sleeve 10. A plurality of the hose band guide grooves 19 can be formed on the outer peripheral surface of the sleeve 10.
Further, a claw body 20 separated by a slit 23 is formed in the axial direction from the right end portion of the sleeve 10, and an inner circumferential surface corresponding to a hose band guide groove 19 formed on the outer circumferential portion of the claw body 20 is formed on the inner circumferential surface. In order to bite into the outer peripheral surface of the hose 100, the tip of the pinnacle-shaped claw 22 is formed on the inner peripheral surface in the direction toward the center, and the claw body 20 and the claw 22 are tightened with the hose band 35, The circumference can be easily reduced and tightened toward the center.
The claw 22 may be formed in a two-stage configuration, such as a claw 22 (22a) at the right end of the sleeve 10 and a claw 22 (22b) formed on the left side. Further, when the claws (22a, 22b) are formed in a two-stage configuration, the first and second stages may be arranged in a staggered manner.
Concavities and convexities 25 are formed on the inner peripheral surface of the sleeve 10 corresponding to the hose band guide groove 19 formed on the outer peripheral surface of the sleeve 10.

Next, FIG. 4 shows an elastic cap 30 attached to the end of the hose 100, which is made of an elastic body such as rubber. The elastic cap 30 is provided with a flange 31 for stopping at the end of the hose 100, and a semicircular convex fastening portion 33 is formed over the circumference at the right end of the outer peripheral surface. That is, it is desirable that the tightening portion 33 corresponding to the position to be tightened by the hose band 35 to be described later is formed thicker than other portions, so that it can be tightened more firmly.
The elastic cap 30 does not necessarily have to be attached to the end of the hose 100, and the hose itself may be inserted into a space formed by the sleeve 10 and the nipple 1. In addition to the semicircular shape, the shape of the tightening portion 33 may be any shape that can be firmly tightened when pressed, such as an elliptical shape.
FIG. 5 shows a hose band 35 which is attached to the hose band guide groove 19 and tightened.

Next, an operation of connecting the hose 100 to the connector using the nipple 1, the sleeve 10, the elastic cap 30, and the hose band 35 having the above-described configuration will be described.
First, a method of coupling the sleeve 10 to the nipple 1 will be described. The main component of the present application will be described by crimp fitting, but it is not necessarily crimp fitting and may be screw fitting.
In the crimping fitting, when the sleeve 10 is inserted from the right side of the nipple 1 (the hose insertion portion side) and the sleeve 10 is pressed in the axial direction, the crimping flange 15 is formed on the outer peripheral surface of the nipple 1 by the elastic action of the sleeve 10. The sleeve slip-off prevention collar 12 is passed over and fitted into the sleeve press-fitting groove 11, and the slip-off prevention collar 16 and the sleeve removal prevention collar 12 are brought into close contact with each other to be prevented from coming off.

An elastic cap 30 is attached to the tip of the hose 100 in a connector in which the nipple 1 and the sleeve 10 are integrated, and the hose 100 is attached to a space formed by the sleeve 10 and the nipple 1.
The hose 100 may be directly inserted into the space formed by the sleeve 10 and the nipple 1 without attaching the elastic cap 30.
At this time, the outer diameter of the elastic cap 30 covering the hose 100 is larger than the inner diameter of the claw 22 of the sleeve, but the sleeve 10 has a slit 23 formed in the axial direction so that the claw 22 can be easily expanded. Thus, the hose 100 can be inserted and installed to the back of the space formed by the sleeve 10 and the nipple 1.
After that, when the hose band 35 is attached to the hose band guide groove 19 formed on the outer peripheral surface of the sleeve 10 and the hose band 35 is tightened, the slit 23 formed in the sleeve 10 is reduced in the inner diameter direction, and the outer peripheral surface of the hose 100 is It can be tightened strongly. Further, the hose band 35 is tightened at a predetermined position without being detached or displaced by the hose band guide groove 19.

As shown in FIG. 1 (B), the connector fastened by the hose band 35 can shrink the sleeve 10 toward the center with a small fastening force by the slit 23 of the sleeve 10. That is, the claw 22 formed on the inner peripheral surface corresponding to the hose band guide groove 19 of the sleeve 10 can be bitten into the outer peripheral surface of the hose 100.
Further, since the elastic cap 30 attached to the end of the hose 100 is inserted to the inside of the sleeve 10, when the sleeve 10 is tightened, the slit 23 is reduced and the tightening portion 33 of the elastic cap 30 is also formed. It is reduced in the central direction and is in close contact with the outer peripheral surface of the hose 100.

As described above, by tightening the hose band 35 from the outer peripheral surface of the slit 23, the tightening force is large because the two portions of the claw 22 and the tightening portion 33 of the elastic cap 30 bite into the outer peripheral surface of the hose 100.
Further, the permanent deformation of the hose 100 employs an elastic cap 30 for tightening the outer peripheral surface of the hose. Therefore, even if permanent distortion occurs, the pressing force by the elastic body acts and the years pass. However, there is no decrease in the pressure of the hose, and it can exhibit waterproofness and prevention of disconnection.

  FIG. 6 shows the metallic nipple 1 shown in FIG. 2 combined with the sleeve 10 shown in FIG. 3 by screws 1e, or the nipple 1 and the sleeve 10 are integrated by resin molding using a mold. You may have done.

7 is a cross-sectional view of various sleeves taken along line AA of FIG.
FIG. 7A shows a sleeve 10A in which the cross-sectional shape of the claw body 20 (hose band guide groove 19) separated by the slit 23 and formed over the circumference is a crescent moon. The hose band 35 attached to the hose band guide groove 19 is in contact with the hose band guide groove 19 with the crescent-shaped top, so that the contact area is small and the hose band 35 is tightened with low torque. When the hose band 35 is tightened, the gap of the slit 23 can be reduced.

In FIG. 7B, the cross-sectional shape of the claw body 20 (hose band guide groove 19) separated by the slit 23 and formed over the circumference has a longer outer peripheral surface than the inner peripheral surface. The sleeve 10B is formed by alternately arranging a trapezoidal shape and a trapezoidal shape whose inner peripheral surface is longer than the outer peripheral surface.
When the hose band 35 attached to the hose band guide groove 19 is tightened, the slit 23 is closed without a gap.
FIG. 7C shows a sleeve 10C in which the cross-sectional shape of the claw body 20 (hose band guide groove 19) that is separated and formed over the circumference is a parallelogram. The cross-sectional shape of the slit 23 is formed in a parallelogram that is inclined with respect to the radial direction. When the hose band 35 attached to the hose band guide groove 19 is tightened, the parallelogram-shaped slit 23 is closed without a gap.
As described above, the cross-sectional shape of the claw body 20 (hose band guide groove 19) formed in the sleeve 10 has various shapes, and is appropriately selected depending on the purpose.
Moreover, although the said connector is an application example of a hose, it cannot be overemphasized that it can apply to a thin tube etc.

  Next, a case where a cap nut is used instead of the hose band fastening device will be described.

  11A is a partial cross-sectional front view of the nipple 1A, and FIG. 11B is a right side view thereof. A sleeve mounting portion 11A ( 11b, 11c), and the polygonal fitting portion 11c of the mounting portion 11A has a polygonal cross section viewed from the longitudinal direction of the nipple. A device screw 1b for device mounting is formed on the left side of the mounting portion. On the other hand, a sleeve protruding prevention collar 12 slightly protruding is formed on the right side of the mounting portion. Further, an insertion portion 1c into which the hose 100 or the like can be inserted extends from the right portion of the nipple 1A, and the outer peripheral surface of the insertion portion 1c has an unevenness 5 that the inner peripheral surface of the hose 100 bites into. Is formed. The irregularities 5 may be the deformed irregularities 3 described above. In addition, the device attachment method on the left side of the nipple 1 may be coupled through a band or the like in addition to the device screw type, and is appropriately adapted to the type of device.

12A is a left side view of the sleeve 10D, FIG. 12B is a partial front sectional view of the sleeve 10D having claws 22D arranged in a spiral shape on the circumference, and FIG. 12C is a right side of the sleeve 10D. FIG.
The sleeve is a cylinder made of resin or the like having an elastic action, and is composed of a rotating head 10a, a screw portion 10d, and a claw body 20 from the left, and an inner peripheral portion of the rotating head 10a is provided with the nipple 1. Mounting portions 10b and 10c to be mounted on the mounting portions 11A (11b and 11c) are formed, and these mountings are realized by crimp fitting and polygonal fitting which will be described in detail later. A screw capable of screwing the cap nut 50 is formed in the central thread portion 10d of the sleeve 10D. In addition, a claw body portion 20 separated by a slit is formed in the axial direction from the right end portion of the sleeve 10, and a claw 22D having a spire-like tip in the direction toward the center is formed in order to bite into the outer peripheral surface of the hose. It is formed on the inner peripheral surface.
Further, the claw 22D is formed in a spiral shape (screw shape) on the inner peripheral surface of the claw body portion 20 of the sleeve 10D. In this case, the claw 22D is disposed in the spiral groove of the hose reinforcing material 100e. The outer diameter portion of the hose 100 that is the valley portion of the hose reinforcing material 100e is pressed by the crest portion of the 10D claw 22D, and at the same time, the outer diameter portion of the hose reinforcing material 100e can be pressed and fixed by the valley portion of the claw of the sleeve.

  FIG. 12D is a partial front sectional view of a sleeve 10 </ b> E provided with claws 22 </ b> E arranged in a ring shape on the circumference, and has a form in which the claws 22 </ b> E are arranged in a ring shape on the inner peripheral surface of the claw body 20. By tightening the claw body 20 and the claw 22E with a cap nut 50, the circumference can be easily reduced and tightened in the center direction. In addition, you may arrange | position the nail | claw 22E in every other nail | claw main-body part 20 isolate | separated by the slit 23. FIG.

  FIG. 12E is a front partial cross-sectional view of a sleeve 10F provided with a plurality of claws 22F arranged in a ring shape around the circumference. And the outer peripheral surface of a hose can be pressed more strongly than a single ring, and a hose and a connector can be fixed more strongly. Further, when the claws 22F are formed in a plurality of stages, the claws 22F may be arranged in a staggered manner in the odd-numbered stages and the even-numbered stages.

  The cross-sectional shape of the claw body 20 of each of the sleeves 10D, 10E, and 10F shown in the figure is a crescent sleeve 10A, and the outer peripheral surface is longer than the inner peripheral surface. It may be a sleeve 10B formed by alternately arranging long and trapezoidal shapes, or a sleeve 10C having a parallelogram shape, which are shown in FIGS. 7A, 7B, and 7C, respectively. Corresponding to

  FIG. 13 is a front sectional view of the cap nut. A sleeve fitting screw 50d is formed on the inner peripheral portion on the mounting portion side of the sleeve having a large inner diameter, and a taper for tightening the outer periphery of the claw body portion 20 on the inner peripheral portion on the opposite small inner diameter side. A portion 50a is formed.

A method of attaching the sleeve 10 to the nipple 1 will be described with reference to FIGS. 10 (A) and 10 (B). First, as shown in FIG. 10 (A), the mounting by the crimping fitting is performed by inserting the sleeve 10D from the right side of the nipple (hose insertion portion side) and pressing the sleeve in the axial direction by the elastic action of the sleeve. The sleeve crimp fitting portion 10b gets over the sleeve detachment prevention flange 12 formed on the outer peripheral surface of the nipple 1A and is fitted into the nipple crimp fitting portion 11b. Moreover, the mounting | wearing by polygonal fitting is performed as follows. First, the cross section seen from the longitudinal direction of the sleeve fitting portion 11c of the nipple 1A has a polygonal shape, and the fitting side surface of the sleeve 10D has the same concave shape as the polygon of the nipple 1A. After the fitting, the polygon fitting portion 11c of the nipple and the concave polygon fitting portion 10c of the sleeve 10D are overlapped and fixed, so that the nipple and the sleeve can be integrated. By these, even if the sleeve 10D is rotated, the idle rotation of the fitting portion can be prevented, and if the outermost peripheral portion of the sleeve is formed as a rotating head for the spanner, it can function as a rotating head for the spanner. .
Hereinafter, this mounting will be described as being realized by both crimp fitting and polygonal fitting, but not necessarily both, but may be screw fitting or the like.

  Furthermore, as shown in FIG. 10 (C), the mounting by the crimping fitting is performed by inserting the sleeve 10G from the right side of the nipple (on the hose insertion portion side) and pressing the sleeve in the axial direction, and the elastic action of the sleeve. Thus, the sleeve crimp fitting portion 10b gets over the sleeve detachment prevention flange 12 formed on the outer peripheral surface of the nipple 1B and is fitted into the nipple crimp fitting portion 11b. The Moreover, the mounting | wearing by polygon fitting is performed as follows. First, the cross section seen from the longitudinal direction of the sleeve fitting portion 11c of the nipple 1B has a polygonal shape, and the fitting side surface of the sleeve 10G has the same concave shape as the polygon of the nipple 1B. After the polygon fitting, the polygon fitting portion 11c of the nipple and the concave polygon fitting portion 10c of the sleeve 10G are overlapped and fixed, so that the nipple and the sleeve can be integrated. Accordingly, the idle rotation of the fitting portion can be prevented even when the sleeve 10D is rotated. Further, the rotating head 1a of the nipple 1B and the rotating head 10a of the sleeve 10G are formed so as to be flush with each other, and these two parts are simultaneously rotated with a tool such as a spanner. By doing so, it is possible to prevent the connector from being deformed.

  Next, FIG. 9 (A) is a front partial cross-sectional view of the connector before assembly, and the assembly of the entire hose connector of the present application will be described with reference to FIG. 9 (A). Insert the sleeve 10D from the right side in the central axis direction of the nipple 1A on the hose insertion side to the left side of the central axis of the nipple 1A, and attach it to the sleeve mounting portion 11A (11b, 11c) in the central part of the nipple to integrate it. On the right side of the section, a slightly protruding sleeve removal collar 12 is formed. Further, the elastic cap 30 is attached to the tip of the hose 100, and this hose 100 is attached to the space 60 formed by the integrated sleeve 10D and the nipple 1A. Further, a cap nut 50d is screwed into a part of the male screw 10d at the outer periphery of the center of the sleeve 10D. An equipment screw 1b for equipment attachment is formed on the left side of the mounting portion. At this time, the outer diameter of the elastic cap 30 placed on the hose 100 is larger than the inner diameter of the sleeve claw 22D, but the sleeve 10D has a slit 23 formed in the axial direction so that the claw 22D can be easily expanded. Thus, the hose 100 can be inserted and installed to the back of the space 60 formed by the sleeve 10D and the nipple 1A. The hose 100 may be directly inserted into the space 60 formed by the sleeve 10D and the nipple 1 without attaching the elastic cap 30.

  Next, FIG. 9B is a partial front sectional view of the connector after assembly, and FIG. 9B after assembly of FIG. 9A will be described. In order to fix the hose and the connector, the taper portion 50a of the right end portion of the cap nut 50 is screwed into the left end portion of the male screw 10d of the outer peripheral portion of the sleeve nut 50 so that the cap portion 50a of the sleeve 10D The claw 22 provided on the inner peripheral surface of the claw body 20 is pushed into the outer peripheral surface of the hose 100 by pressing the portion 20 in the inner diameter direction, and at the same time, the hose insertion portion 1c of the nipple is strongly pressed and fixed on the inner surface of the hose. Thus, the connector and the hose can be fixed. Further, since the elastic cap 30 attached to the end of the hose 100 is inserted to the inside of the sleeve 10D, when the sleeve 10D is tightened, the claw body portion 22 is reduced and the tightening portion 33 of the elastic cap 30 is provided. Is also reduced in the central direction and is in close contact with the outer peripheral surface of the hose 100. The elastic cap is not a cap having a collar 31 but may be a cylindrical elastic member without the collar 31. When an elastic cap or a cylindrical elastic member is provided, when the outer peripheral surface of the sleeve claw main body portion 20 is tightened and pressed in the inner diameter direction, the sleeve claw main body portion 20 is reduced in the inner peripheral surface direction and at the same time, the elastic cap or elastic member. Is also pressed, shrinks and bites into the outer peripheral surface of the hose 100, so that the hose and the connector can be fixed more firmly. Instead of attaching the elastic cap 30, the hose 100 may be directly inserted into the space 60 formed by the sleeve 10D and the nipple 1 and then tightened by the tightening means.

As described above, by tightening from the outer peripheral surface of the claw body portion 20 by the fastening means such as the cap nut 50, the two portions of the claw 22 and the tightening portion 33 of the elastic cap 30 bite into the outer peripheral surface of the hose 100. The tightening force is large.
Further, the permanent deformation of the hose 100 employs an elastic cap 30 for tightening the outer peripheral surface of the hose. Therefore, even if permanent distortion occurs, the pressing force by the elastic body acts and the years pass. However, there is no decrease in the pressure of the hose, and it can exhibit waterproofness and prevention of disconnection.

FIG. 14A shows a configuration in which sawtooth-shaped irregularities 22H are formed along the inner periphery of the inner peripheral portion of the claw main body portion 20 arranged circumferentially through the slit 23 at the end portion of the sleeve 10H. It is. FIGS. 14 (B) and 14 (C) are views before and after being tightened by the tightening means 50, and the sawtooth-shaped irregularities 22H bite into the outer surface of the hose 100 widely in the longitudinal direction. Can be strongly fixed.
The combination of each component is appropriately selected and used.

DESCRIPTION OF SYMBOLS 1 Nipple 1a Rotating head 1c Hose insertion part of nipple 3 Deformation unevenness 5 Hose bite 10 Sleeve 11 Sleeve crimp groove 11A Sleeve mounting part 11b Crimp fitting part 11c Polygon fitting part 19 Hose band guide groove 20 Claw body 22 Claw 23 Slit 25 Concavity and convexity 30 Cap 33 Tightening part 35 Hose band 50 Cap nut 60 Space part 100 Hose 100e Hose reinforcement member (hard)

Claims (10)

A sleeve is attached to a nipple having a hose insertion part, and a space part into which the hose can be inserted is formed in the sleeve. After inserting the hose into the space part, the sleeve is opposite to the attachment part to the nipple. A connector for connecting a hose to a nipple by tightening in an inner diameter direction by a tightening means from an outer peripheral surface of a terminal portion of a sleeve extending to the side,
At the terminal end of the sleeve, a claw is formed on the inner peripheral surface of the claw body formed circumferentially through a slit, and at the same time the claw is bitten into the outer peripheral surface of the hose by tightening the tightening means. A connector that firmly presses the hose insertion part on the inner surface of the hose to fix the hose to the nipple.   The connector according to claim 1, wherein a deformed unevenness that the inner peripheral surface of the hose bites into the outer peripheral surface of the insertion portion of the nipple is formed.   The connector according to claim 1 or 2, wherein an end of the hose is covered with an elastic cap.   The connector according to any one of claims 1 to 3, wherein a hose band guide groove is formed on an outer peripheral surface on a right side of the sleeve, and the hose band guide groove is formed.   The connector according to any one of claims 1 to 4, wherein a cross-sectional shape of a nail body separated by a slit and formed over a circumference is a crescent, a trapezoid, or a parallelogram.   The connector according to any one of claims 1 to 5, wherein a claw is formed in a screw shape or one or more ring shapes on an inner peripheral surface circumference of a claw body portion extended to the sleeve.   When sawtooth-shaped irregularities are formed on the inner peripheral surface of the claw body extending from the sleeve and tightened by a tightening means, the sawtooth-shaped irregularities are parallel to the hose circumference on the outer surface of the hose. The connector according to claim 1, wherein the connector bites into the connector.   The connector according to any one of claims 1 to 7, wherein an elastic member is inserted into an inner peripheral surface of the claw body of the sleeve.   Crimped fitting of nipple and sleeve, with the nipple fitting part polygonal and the sleeve fitting part polygonal recess to prevent rotation of the nipple and sleeve fitting part after fitting The connector according to any one of claims 1 to 8, characterized in that: 2. The rotating head of the nipple and the rotating head of the sleeve are the same, and when the nipple and the sleeve are crimped and integrated, the respective rotating heads are flush with each other. The connector according to claim 9.

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