TW201339460A - Retainer, and joint for flexible pipe - Google Patents

Abstract

A retainer which can be easily connected to a flexible pipe provided in a narrow space. A retainer (24) surrounds a through-space (200) through which a flexible pipe penetrates. When the flexible pipe has penetrated through the through-space (200), the retainer (24) prevents the flexible pipe from retracting and coming out of the through-space (200). The retainer (24) is provided with retaining sections (84) and an affixation section (86). The retaining sections (84) individually engage with the outer peripheral surface of the flexible pipe. The retaining sections (84) are affixed to the affixation section (86).

Description

Retainer and flexible pipe joint

The present invention relates to a pipe joint for a retainer and a flexible pipe. In particular, the present invention relates to a retainer and a pipe joint for a flexible pipe which can be easily connected to a flexible pipe provided at a narrow place.

Patent Document 1 discloses an occlusion device for a flexible tube. The occluding device is provided with a pipe joint body, and a gasket, and a gasket piece, and a retainer, and a nut, a cover body, and an O-ring. The pipe joint body is installed at a portion of the flexible pipe that branches from the gas pipe. The pipe joint body is provided with a connection port of a flexible pipe and an O-ring groove. In the connection port, a step portion is provided. A gasket is fitted to the step portion. The gasket piece is placed in such a manner as to be adhered to the gasket. The holder is inserted into the connection port. The holder is made up of 2 parts. The nut is engaged with the body of the pipe joint. The nut is provided with an insertion hole. The cover body is provided with an occlusion portion. The occlusion portion is fitted into the insertion hole of the nut. The O-ring is fitted into the O-ring groove of the pipe joint body. At this occlusion device, the flexible tube can be connected.

[prior technical literature] [Patent Document]

[Patent Document 1] Japanese Unexamined Patent Publication No. Hei 1-16980

In the occlusion device disclosed in Patent Document 1, there is a problem that it is difficult to connect the flexible tube provided at a narrow place. Even if the occluding device disclosed in Patent Document 1 is a pipe joint, this problem has not been solved. The present invention has been made to solve this problem. It is an object of the invention to provide a retainer and a pipe joint for a flexible pipe which can be easily connected to a flexible pipe provided at a narrow place.

The holder of the present invention and the pipe joint for a flexible pipe will be described with reference to the drawings. In addition, the reason for using the symbols in the figures in this column is to help understand the contents of the invention. The use of the symbols in the figures in this column is not intended to limit the scope of the invention to the scope of the drawings.

In order to achieve the above object, in accordance with one aspect of the present invention, the retainer 24 surrounds the through space 200 through which the flexible tube 300 passes. When the flexible tube 300 penetrates the penetration space 200, the retainer 24 prevents the flexible tube 300 from retreating from the penetration space 200 and falling off. The holder 24 is provided with a plurality of anti-drop portions 84 and fixing portions 86 and 130. The anti-drop portion 84 is hooked on the outer peripheral surface of the flexible tube 300, respectively. The fixing portions 86 and 130 fix the plurality of anti-drop portions 84.

Since the plurality of anti-shedding portions 84 are fixed at the fixing portions 86, 130, the holder 24 is attached to the place where it is placed at a narrow place. When the flexible tube 300 is located, as long as one of the holders 24 is held, the possibility that a part of the plurality of anti-shedding portions 84 falls is lowered. Since it is possible to reduce the possibility of dropping a part of the plurality of fall-preventing portions 84, it is possible to prevent time consuming from being performed when connecting the flexible tubes 300 at a narrow place. As a result, it is possible to provide a holder 24 that can be easily connected to the flexible tube 300 disposed at a narrow place.

Further, it is preferable that the fixing portions 86 and 130 include the tubular portion 100 and the accommodating portions 102 and 140. The tubular portion 100 accommodates a plurality of anti-shedding portions 84. The tubular portion 100 is more elastically deformable than the fall-preventing portion 84. The gusset portions 102 and 140 sandwich the detachment preventing portion 84 together with the tubular portion 100. The lap portions 102 and 140 are more easily elastically deformed than the detachment prevention portion 84. In this case, the tubular portion 100 is separated from the one end in the direction of the shaft 250 of the tubular portion 100 to the other end at a position facing the adjacent falling-preventing portion 84. One of the portions of the lap portions 102 and 140 facing each other at a position separated from the tubular portion 100 is separated from one end of the ferrule portions 102 and 140 in the direction of the axis 250 to the other end.

One location of the tubular portion 100 and one of the opposing portions 102, 140 of the tubular portion 100 are separated from one end of the shaft 250 to the other end. If a force is applied to the separate locations, the location is opened. This is because the tubular portion 100 and the lap portions 102, 140 are elastically deformed at this time. If it is not to apply force to the site, the site is closed as if it were originally. By this, It is sufficient that the retainer 24 that is to be held open at the place to be held open is fitted to the flexible tube 300, and if the retainer 24 is embedded in the flexible tube 300, it is not applied at the place. powerful. If the retainer 24 is fitted into the flexible tube 300 in this manner, the tubular portion 100 and the lap portions 102 and 140 will be elastically deformed only as the fall-preventing portion 84, and will remain. The operation of the device 24 in the flexible tube 300 is easy.

Alternatively, it is preferable that the above-mentioned occlusion portion 102 is one end of the shaft 250 in the direction of the other portion from the other than the one portion separated from the tubular portion 100. Separation has been covered to cover the other end.

The lap portion 102 is separated from the one end of the yoke portion 102 in the direction of the shaft 250 to the other end. As a result, when the occlusion portion 102 is separated from each other at only one place, it is easy to open one place where the phases of the tubular portion 100 are separated. If the location is easy to open, it is easier to fit the retainer 24 into the flexible tube 300 than is not the case.

According to another aspect of the present invention, the pipe joint 10 for a flexible pipe is provided with a pipe joint body 20, a retainer 24, and a pressing wheel 26. The retainer 24 is housed within the fitting body 20. The push wheel 26 is inserted into the fitting body 20. The pipe joint body 20 is provided with an inlet port 34 of the flexible pipe 300 and an inlet path 36 of the flexible pipe 300. The retainer is configured in the access path 36. The access path 36 is in communication with the outside of the pipe joint body 20 via the inlet port 34. The retainer 24 is a flexible tube 300 The through space 200 is surrounded. When the flexible tube 300 penetrates the penetration space 200, the retainer 24 prevents the flexible tube 300 from retreating from the penetration space 200 and falling off. The pressing wheel 26 prevents the retainer 24 from coming off the inside of the pipe joint body 20 together with the flexible pipe 300. The holder 24 is provided with a plurality of anti-drop portions 84 and fixing portions 86 and 130. The anti-drop portion 84 is hooked on the outer peripheral surface of the flexible tube 300, respectively. The fixing portions 86 and 130 fix the plurality of anti-drop portions 84.

Since it is possible to reduce the possibility of dropping a part of the plurality of fall-preventing portions 84, it is possible to prevent time consuming from being performed when connecting the flexible tubes 300 at a narrow place. As a result, it is possible to provide a flexible pipe joint 10 that can be easily connected to the flexible pipe 300 installed at a narrow place.

Moreover, it is preferable that the fixing portions 86 and 130 of the above-described flexible pipe joint 10 include a tubular portion 100 and gusset portions 102 and 140, and the tubular portion 100 accommodates a plurality of detachment preventing portions 84. The tubular portion 100 is more elastically deformable than the fall-preventing portion 84. The gusset portions 102 and 140 sandwich the detachment preventing portion 84 together with the tubular portion 100. The lap portions 102 and 140 are more easily elastically deformed than the detachment prevention portion 84. In this case, the pipe joint body 20 further includes an adhesion portion 38. The adhesion portion 38 is provided deep in the entrance path 36 when viewed from the inlet port 34. At the adhesion portion 38, the front end portion of the flexible tube 300 is plastically deformed and closely adhered. The fall prevention portion 84 includes a base portion 90 and a claw portion 92. The base portion 90 is disposed at the outer circumference of the through space 200. The claw portion 92 is provided at the base portion 90 so as to protrude from the base portion 90 toward the through space 200. Push wheel 26 is provided with an annular portion 60. The annular portion 60 is covered by the tubular portion 100. The length of the tubular portion 100 in the direction of the axis 250 is equal to or greater than the sum of the length of the shaft portions 250 in the direction of the shaft 250 and the length of the shaft portion 250 in the direction of the shaft 250 and the pitch of the flexible tube 300. The length of the tubular portion 100 in the direction of the axis 250 is equal to or less than the sum of the length of the grommets 102 and 140 in the direction of the axis 250 and the length of the claw portion 92 in the direction of the axis 250 and the length of the annular portion 60 in the direction of the axis 250.

When the length of the tubular portion 100 in the direction of the axis 250 is such that the above requirements are satisfied, the retainer 24 is not housed in the pipe joint body 20 so that the annular portion 60 is covered by the tubular portion 100, and the flexibility is obtained. The front end portion of the tube 300 is not adhered to the close portion 38. This is because it is obstructed by the tubular portion 100. Thereby, the cage 24 is prevented from being housed in the pipe joint main body 20 so that the annular portion 60 is not covered by the tubular portion 100.

Moreover, it is preferable that the above-described pipe joint main body 20 further includes an adhesion portion 38 and a bulging portion 40. The adhesion portion 38 is provided deep in the entrance path 36 when viewed from the inlet port 34. At the adhesion portion 38, the front end portion of the flexible tube 300 is plastically deformed and closely adhered. The adhesion portion 38 is annular. The bulging portion 40 bulges from the inner side of the adhesion portion 38 toward the inlet port 34.

By the bulging of the bulging portion 40, it is prevented that the front end portion of the flexible tube 300 is plastically deformed and a part thereof is hindered from the flow inside the flexible tube 300.

Further, it is preferable that the retainer 24 is disposed in the entry path 36 so as to face the direction different from the specific direction. At this time, the push wheel 26 is prevented from entering deeper into a particular position within the pipe joint body 20. Thereby, it is prevented that the retainer 24 is disposed in the entrance path 36 so as to face the direction different from the specific direction.

According to the present invention, it is possible to easily connect the flexible tubes provided at a narrow place.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same symbols are attached to the same parts. The names and functions are the same. Therefore, for the sake of these, detailed descriptions will not be repeated.

[Description of structure]

Fig. 1 is a view showing a pipe joint 10 for a flexible pipe according to an embodiment of the present invention. In Fig. 1, one half of the pipe joint 10 for a flexible pipe is cut. The configuration of the pipe joint 10 for a flexible pipe according to the present embodiment will be described with reference to Fig. 1 . The pipe joint 10 for a flexible pipe according to the present embodiment is connected to the flexible pipe 300. The flexible tube 300 is provided with a convex portion 310 and a concave portion 312. The surface of the convex portion 310 and the surface of the concave portion 312 constitute the outer peripheral surface of the flexible tube 300. The outer peripheral surface of the flexible tube 300 is covered by the coating layer 314. As shown in Fig. 1, generally, the flexible pipe joint 10 is provided with The pipe joint body 20, and the front end washer 22, and the retainer 24, and the push wheel 26. At the joint body 20, the front end portion of the flexible tube 300 is inserted. At the pipe joint body 20, one end of the push wheel 26 is also inserted. At the pipe joint body 20, a connected body is connected. An example of a connected body is, for example, a socket. In the following description, the connected body is not illustrated. In the case of this embodiment, the front end washer 22 is formed in a shape similar to a wheel. The cross section of the front end gasket 22 is circular. The front end washer 22 is made of rubber. The front end gasket 22 is housed in the pipe joint body 20. The retainer 24 is housed within the fitting body 20. The retainer 24 prevents the flexible tube 300 from coming off the fitting body 20. The push wheel 26 is inserted into the fitting body 20. The push wheel 26 prevents the retainer 24 from coming off the joint body 20 together with the flexible tube 300.

Fig. 2 is a view showing the pipe joint main body 20 of the present embodiment. In Figure 2, one of the pipe joint bodies 20 is cut. The structure of the pipe joint body 20 of the present embodiment will be described with reference to Fig. 2 . The shape of the pipe joint body 20 is cylindrical. On the outer surface of the pipe joint body 20, a nut-shaped portion 30 is provided. A tool such as a wrench is used to hold the nut portion 30. At the rear portion (left portion in Fig. 1), a pipe connecting portion 32 is provided. At the pipe connecting portion 32, the above-mentioned connected body is connected. In the case of this embodiment, the pipe connecting portion 32 is a male screw. The port provided at one of the ends of the pipe joint body 20 is the inlet port 34 of the flexible pipe 300. The pipe joint body 20 is internally provided with an inlet path 36, an adhesion portion 38, a bulging portion 40, and a fluid path 42. The access path 36 is in communication with the outside of the pipe joint body 20 via the inlet port 34. The holder 24 is disposed in the entry path 36. The adhesion portion 38 is provided deep in the entrance path 36 when viewed from the inlet port 34. At the adhesion portion 38, the front end portion of the flexible tube 300 is plastically deformed and closely adhered. The bulging portion 40 bulges from the inner side of the adhesion portion 38 toward the inlet port 34. The adhesion portion 42 is provided deep in the bulging portion 40 when viewed from the inlet port 34. The inner diameter of the fluid passage 42 is smaller than the outer diameter of the flexible tube 300.

The entry path 36 is provided with a body side seal portion 46, a female screw 48, and a tapered hole 50. The body side seal portion 46 is provided deep in the inlet port 34 when viewed from outside the pipe joint body 20. The body side seal portion 46 forms a sealing surface between it and the pressing wheel 26. The female screw 48 is disposed deep in the body side seal portion 46 when viewed from outside the pipe joint body 20. The female screw 48 is engaged with a male screw 62 which will be described later. The tapered hole 50 is disposed deep in the female screw 48 when viewed from outside the pipe joint body 20. The inner diameter of the tapered hole 50 becomes smaller as it approaches the adhesion portion 38.

The adhesion portion 38 is provided with a front end gasket groove 52. The front end gasket 22 is fitted to the front end gasket groove 52.

Fig. 3 is a perspective view of the holder 24 of the embodiment. In Figure 3, a portion of the retainer 24 is cut. The configuration of the holder 24 of the present embodiment will be described with reference to Fig. 3 .

The retainer 24 is externally shaped and has a slightly cylindrical shape. The retainer 24 is fitted into the tapered bore 50 of the inlet path 36 of the fitting body 20. Holder 24, which has a plurality of anti-drop portions 84 and a fixing portion 86. The fall-off portion 84 surrounds the through space 200. The flexible tube 300 passes through the through space 200. In the case of this embodiment, the fall-off prevention portion 84 is hooked at the concave portion 312 of the flexible tube 300, respectively. The anti-drop portions 84 are fixed to the fixing portion 86. Thereby, the distance between the anti-drop portions 84 is relatively set by the fixing portion 86. Moreover, since it has such a structure, the retainer 24 is surrounded by the penetration space 200.

The fall prevention portion 84 is made of metal. The fall prevention portion 84 includes a base portion 90 and a claw portion 92. The base portion 90 is disposed at the outer circumference of the through space 200. The claw portion 92 is provided at the base portion 90. In the case of this embodiment, the base portion 90 and the claw portion 92 are integrally formed. The claw portion 92 protrudes from the base portion 90 toward the through space 200.

The fixing portion 86 includes a tubular portion 100, a gusset portion 102, and a coupling portion 104. The tubular portion 100, the gusset portion 102, and the connecting portion 104 are more easily elastically deformed than the detachment preventing portion 84. In order to facilitate elastic deformation, it is preferable that the material of the fixing portion 86 is a synthetic resin. In the case of this embodiment, the material of the fixing portion 86 is polyethylene. The tubular portion 100 houses all of the fall-preventing portions 84. The lap portion 102 is disposed at the inner side of the base portion 90 when viewed from the penetration space 200. The nip portion 102 sandwiches the base portion 90 together with the tubular portion 100. The connecting portion 104 connects the tubular portion 100 and the lap portion 102. In the case of the present embodiment, the tubular portion 100 is separated from the one end of the tubular portion 100 in the direction of the shaft 250 to the other end. The one place is a place that faces the adjacent fall prevention portion 84. One place, It may be opposed to any of the plurality of anti-shedding portions 84. One place of the lap portion 102 is also separated from one end of the direction of the shaft 250 of the ferrule 102 to the other end. The one place is a place where a place separated from the tubular portion 100 is opposed to the place. If a force is applied to a place where the cylindrical portion 100 and the lap portion 102 are separated from each other, the place is opened. This is because the fixing portion 86 is elastically deformed. If it is not to apply force to the site, the site is closed as if it were originally. This place is the separation place 110 shown in this embodiment. Further, in the case of the present embodiment, the lap portion 102 is not only at the separation place 110 but at the other place 112, and is also covered from one end of the shaft 250 to the other end. Separation. Thereby, the lap portion 102 of the present embodiment is divided into two portions.

In the length of the parts of the flexible pipe joint 10, there is a relationship as described below. Fig. 4 is a cross-sectional view showing a part of the pipe joint 10 for a flexible pipe of the embodiment. This relationship will be described based on Fig. 4 . The length 270 of the axial direction of the tubular portion 100 (in the direction of the axis of the shaft 250, the same applies hereinafter) is the sum of the axial length 272 of the ferrule 102 and the axial length 274 of the claw portion 92 and the pitch of the flexible tube 300. . The axial length 270 of the tubular portion 100 is equal to or less than the axial length 272 of the ferrule 102 and the axial length 274 of the claw portion 92 and the axial length 280 of the annular portion 60. The axial length 280 of the annular portion 60 is longer than the pitch of the flexible tube 300. The pitch of the flexible tube 300 refers to the interval at which the concave portion 312 of the flexible tube 300 is the bottommost portion. In the actual use of the scratch At the tube 300, there is a stagger in the interval between the recesses 312. Therefore, in the case of the present embodiment, the pitch of the flexible tube 300 actually used is regarded as the pitch of the flexible tube 300 as the minimum value of the interval between the concave portions 312. Since there is such a relationship, when the holder 24 is disposed in the inlet path 36, if it is oriented in a direction different from the direction shown in Fig. 1, the annular portion 60 of the pressing wheel 26 becomes It does not enter the barrel portion 100 of the holder 24. Since it does not enter, the annular portion 60 is not covered by the tubular portion 100. If the annular portion 60 is not covered by the tubular portion 100, since the pressing wheel 26 does not sufficiently enter the fitting body 20, the male screw 62 of the pressing wheel 26 does not interact with the fitting body 20. The female screws 48 are engaged. Therefore, the push wheel 26 enters a specific position in the pipe joint body 20 and is deeper, which is hindered by the retainer 24.

Fig. 5 is a view showing the pressing wheel 26 of the embodiment. In Fig. 5, one half of the push wheel 26 is cut. The configuration of the pressing wheel 26 of the present embodiment will be described with reference to Fig. 5 . The flexible tube 300 can be passed through the pressing wheel 26. The pressing wheel 26 is provided with an annular portion 60, a male screw 62, a pressing wheel side sealing portion 64, and an angular ring portion 66. The annular portion 60 is housed in the pipe joint body 20 and covered by the tubular portion 100 of the retainer 24. The male screw 62 is engaged with the female screw 48 of the pipe joint body 20. The wheel side seal portion 64 is pushed to form a seal between it and the inlet path 36. When the pipe joint body 20 is connected to the pressing wheel 26, the tool system holds the angular ring portion 66.

At the outer circumference of the push wheel seal portion 64, a peripheral washer is provided Ditch 70. The outer circumferential gasket groove 70 is formed to surround the outer circumferential surface of the pressing wheel side seal portion 64. As shown generally in FIG. 1, at the peripheral gasket groove 70, a peripheral gasket 28 is embedded.

Inside the angular ring portion 66, a waterproof gasket groove 72 is provided. The waterproof gasket groove 72 is provided in such a manner that the flexible tube 300 is surrounded when the front end portion of the flexible tube 300 passes through the pressing wheel 26. At the waterproof gasket groove 72, a waterproof gasket 80 is embedded. The waterproof gasket 80 is made of EPDM or the like. The cross section of the waterproof gasket 80 is T-shaped. A plurality of selectively permeable members are embedded in a plurality of places in the circumferential direction of the waterproof gasket 80. The choice of a transmissive member is not shown. The shape of the permeable member is selected to be pin-shaped. The choice of a permeable member allows gas to pass through but does not allow solids and liquids to pass through. By this, it is possible to perform gas leak inspection. The permeable member is selected, for example, as a member including a continuous porous film or a porous body having continuous pores. The former continuous porous film can be obtained by molding a tetrafluoroethylene resin powder. The latter porous body can be obtained by molding a thermoplastic resin powder such as polyethylene, polypropylene or polymethacrylate.

[Description of connection method]

Next, a method of connecting the flexible tube 300 to the above-described flexible tube joint 10 will be described.

First, the operator removes the coating layer 314 of the amount of the plurality of recesses 310 from the front end of the flexible tube 300. When the removal of the coating layer 314 is completed, the operator passes the flexible tube 300 through the pressing wheel 26. Flexible tube 300 The front end protrudes from the annular portion 60 of the pressing wheel 26.

Next, the operator expands the separation place 110 of the fixing portion 86 of the holder 24. If the separation place 110 is expanded, the operator inserts the claw portion 92 of the holder 24 into the concave portion 312 at the front end of the flexible tube 300. If the claw portion 92 of the retainer 24 is fitted into the recessed portion 312 of the flexible tube 300, the tubular portion 100 of the fixed portion 86 automatically covers the annular portion 60 of the pressing wheel 26. As such, the retainer 24 is mounted at the flexible tube 300. At this time, the front end of the flexible tube 300 also protrudes from the claw portion 92 of the holder 24.

Next, the operator inserts the front end washer 22 into the front end gasket groove 52 of the pipe joint body 20. When the front end washer 22 is fitted, the operator inserts the flexible tube 300 into the inlet path 36 of the pipe joint body 20 together with the retainer 24 and the pressing wheel 26. If the male screw 62 of the push wheel 26 is inserted into the inlet path 36 of the pipe joint body 20, the male screw 62 is engaged with the female screw 48 of the pipe joint body 20. If the operator rotates the pressing wheel 26 and the pipe joint body 20 in opposite directions in this state, the retainer 24 moves toward the depth of the inlet path 36 of the pipe joint body 20. This is because the retainer 24 is pushed by the annular portion 60 of the push wheel 26. Since the inner diameter of the tapered hole 50 of the inlet path 36 gradually decreases as it approaches the dense portion 38, the outer periphery of the cylindrical portion 100 of the retainer 24 moves as the retainer 24 faces the depth of the inlet path 36. The face is compressed by the inner peripheral surface of the tapered hole 50. At the same time, the front end portion of the flexible tube 300 protruding from the holder 24 is crushed and plastically deformed between the claw portion 92 of the holder 24 and the adhesion portion 38. even if The front end portion of the flexible tube 300 is plastically deformed, and a portion thereof is prevented from obstructing the flow inside the flexible tube 300. This is because the bulging portion 40 bulges.

[Effect of the pipe joint for a flexible pipe of the present embodiment]

As is apparent from the above description, the plurality of anti-drop portions 84 of the present embodiment are fixed to the fixing portion 86. Since the anti-shedding portion 84 is fixed, when the retainer 24 is attached to the flexible tube 300 disposed at a narrow place, as long as one of the retainers 24 is held, the plurality of anti-shedding portions are prevented from falling off. The possibility that part of the part 84 falls will become lower. Since it is possible to reduce the possibility of dropping a part of the plurality of fall prevention portions 84, it is possible to prevent time consuming from being performed when the connection to the flexible tube 300 at a narrow place is performed. As a result, it is possible to provide a holder 24 that can be easily connected to the flexible tube 300 disposed at a narrow place.

Further, one place of the tubular portion 100 of the present embodiment and one of the portions of the accommodating portion 102 facing the portion of the tubular portion 100 are separated from one end in the direction of the shaft 250 to the other end. By this, it is possible to fit the retainer 24 that is held open at a place where the force is applied to the flexible tube 300, and if the retainer 24 is embedded in the flexible tube 300, at this place The system has not been applied with force. If the retainer 24 is fitted into the flexible tube 300 in this manner, the retainer 24 will be replaced by the elastic deformation equivalent to the fall prevention portion 84 as compared with the tubular portion 100 and the ferrule portion 102. The work that is fitted into the flexible tube 300 becomes easily.

Further, the plenum portion 102 is separated from the one end of the yoke portion 102 in the direction of the shaft 250 to the other end. As a result, when the occlusion portion 102 is separated from each other at only one place, it is easy to open one place where the phases of the tubular portion 100 are separated. If the location is easy to open, it is easier to fit the retainer 24 into the flexible tube 300 than is not the case.

Further, if the retainer 24 is not completely housed in the pipe joint main body 20 so that the annular portion 60 is covered by the tubular portion 100, the front end portion of the flexible tube 300 cannot be adhered to the close-fitting portion. 38. This is because the entry of the push wheel 26 to a specific position within the pipe joint body 20 is further hindered by the retainer 24. Thereby, the cage 24 is prevented from being housed in the pipe joint main body 20 so that the annular portion 60 is not covered by the tubular portion 100.

By the bulging of the bulging portion 40, it is prevented that the front end portion of the flexible tube 300 is plastically deformed and a part thereof is hindered from the flow inside the flexible tube 300.

<Description of Modifications>

The embodiments disclosed herein are all illustrative. The scope of the present invention is not limited by the embodiments described above, and various modifications may be made without departing from the scope of the invention.

For example, the pipe joint 10 for a flexible pipe according to the above-described embodiment may not include the tip end gasket 22. This is because, even if the front end washer 22 is not provided, the front end of the flexible tube 300 is crushed and pressed against the close portion 38 of the joint body 20 (the result is that the front end of the flexible tube 300) It is sealed between the adhesive portion 38 and the adhesive portion 38.

Further, the deep portion of the inlet passage 36 of the pipe joint body 20 does not need to be specifically provided as the tapered hole 50. However, if the tapered hole 50 is provided as described in the present embodiment, the retainer 24 is pressed between the tapered hole 50 and the flexible tube 300 to be pressed. If the retainer 24 is pressed, the retainer 24 does not rotate when the push wheel 26 is locked. If the retainer 24 does not rotate, the flexible tube 300 does not rotate.

Further, the pipe joint main body 20 may not include the bulging portion 40. Further, the specific form of the pipe connecting portion 32 is not limited to the male screw described above.

Further, the anti-drop portion 84 may be hooked to the convex portion 310 of the flexible tube 300, respectively. The anti-drop portion 84 may be hooked only to one of the convex portion 310 or the concave portion 312. The anti-drop portion 84 may be hooked between the convex portion 310 and the concave portion 312.

Further, the form of the fixing portion 86 is not limited to the above embodiment. For example, the number of the fall-off prevention portions 84 provided in the holder 24 is not particularly limited. The number can be 2~4. Further, the length of the tubular portion 100 in the direction of the axis 250 may not satisfy the above requirements. Further, the tubular portion 100 and the accommodating portion 102 may not be easier to prevent the detaching portion 84. Elastic deformation. Further, the accommodating portion 102 can be separated at a plurality of places. Further, the tubular portion 100 and the accommodating portion 102 may be connected without being connected by the connecting portion 104. Fig. 6 is a perspective view of the holder 120 of the modification. In Figure 6, one portion of the holder 120 is cut. The configuration of the holder 120 will be described with reference to Fig. 6 . The holder 120 is provided with a plurality of anti-drop portions 84 and a fixing portion 130.

The fixing portion 130 includes a tubular portion 100 and a gusset portion 140. The fixing portion 130 does not include the above-described ferrule portion 102 and the coupling portion 104. The tubular portion 100 and the ferrule portion 140 are not connected. The ferrule portion 140 is more elastically deformable than the detachment preventing portion 84. The ferrule portion 140 is disposed at the same position as the above-described ferrule portion 102. The ferrule portion 140 sandwiches the base portion 90 together with the tubular portion 100. One location of the lap portion 140 is also separated from one end of the direction of the shaft 250 of the ferrule 102 to the other end. The place is a place where a place separated from the tubular portion 100 is opposed to the place. If a force is applied to a place where the cylindrical portion 100 and the accommodating portion 140 are separated from each other, the place is opened. This is because the fixing portion 86 is elastically deformed. If it is not to apply force to the site, the site is closed as if it were originally. Not only at the tubular portion 100, but also at the splicing portion 140, an elastic force is generated to close the site. By this, it becomes easy to strongly close the place.

When the retainer 24 is disposed in the inlet path 36 in a direction that is different from the specific direction, it is used to be deeper into the specific position within the tube joint body 20 for the push wheel 26 One thing The specific structure is not limited to the above configuration.

10‧‧‧Flexible pipe joints

20‧‧‧Tubing body

22‧‧‧ front end washer

24, 120‧‧‧ keeper

26‧‧‧Pushing wheel

28‧‧‧Outer gasket

30‧‧‧ Nut type

32‧‧‧ pipe connection

34‧‧‧ entrance

36‧‧‧Entering the road

38‧‧‧Ministry

40‧‧‧ bulging

42‧‧‧ Fluid Road

46‧‧‧ Body side seal

46‧‧‧Female screw

50‧‧‧Cone hole

52‧‧‧ front gasket groove

60‧‧‧Rings

62‧‧‧ male screws

64‧‧‧Pushing wheel side seal

66‧‧‧Angular ring

70‧‧‧outer gasket groove

72‧‧‧Waterproof gasket groove

80‧‧‧Waterproof gasket

84‧‧‧Anti-shedding part

86, 130‧‧‧ Fixed Department

90‧‧‧ base

92‧‧‧ claws

100‧‧‧ tube department

102, 140‧‧‧Bundle Department

104‧‧‧Connecting Department

200‧‧‧through space

250‧‧‧Axis

300‧‧‧Flexible pipe

310‧‧‧ convex

312‧‧‧ recess

314‧‧‧covered layer

Fig. 1 is a view showing a pipe joint for a flexible pipe according to an embodiment of the present invention.

Fig. 2 is a view showing the body of the pipe joint according to the embodiment of the present invention.

Fig. 3 is a perspective view of a retainer according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view showing a part of a pipe joint for a flexible pipe according to an embodiment of the present invention.

Fig. 5 is a view showing a pressing wheel according to an embodiment of the present invention.

Fig. 6 is a perspective view of a retainer according to a modification of the present invention.

24‧‧‧keeper

84‧‧‧Anti-shedding part

86‧‧‧Fixed Department

90‧‧‧ base

92‧‧‧ claws

100‧‧‧ tube department

102‧‧‧Bundle Department

104‧‧‧Connecting Department

110‧‧‧Separation site

112‧‧‧Other places

200‧‧‧through space

250‧‧‧Axis

Claims (7)

A retainer that surrounds a through space through which a flexible pipe penetrates, and prevents the flexible pipe from retreating from the through space and falling off if the flexible pipe penetrates the through space, the retainer The utility model is characterized in that: a plurality of anti-shedding portions are respectively hooked on the outer circumferential surface of the flexible tube; and the fixing portion fixes the plurality of anti-drop portions. The retainer according to the first aspect of the invention, wherein the fixing portion includes a tubular portion that accommodates the plurality of anti-drop portions and is more elastically deformable than the anti-drop portion; The nip portion is configured to sandwich the detachment preventing portion together with the tubular portion, and is more elastically deformable than the detachment preventing portion, and the tubular portion is opposed to the adjacent detachment preventing portion One of the places in the axial direction of the tubular portion is separated from the one end of the tubular portion and separated from the other end, and a portion of the above-mentioned collet portion facing the one portion separated from the tubular portion is One end of the aforementioned axial direction of the ferrule portion is always covered to the other end to be separated. The retainer according to the second aspect of the invention, wherein the splicing portion is different from the one of the places where the tubular portion is separated from the one of the places, and the other portion is from the package One end of the aforementioned axial direction of the clip portion covers up to the other end Separation. A pipe joint for a flexible pipe, comprising: a pipe joint body; and a retainer housed in the pipe joint body; and a push wheel that enters the pipe joint body, the pipe joint body having flexibility An inlet passage of the tube, and an inlet passage of the flexible tube that is disposed with the retainer and communicates with the outside of the pipe joint body via the inlet port, and the retainer passes through the flexible pipe When the flexible pipe penetrates the through space, the flexible pipe is prevented from retreating from the through space and falling off, and the pressing wheel prevents the retainer from being together with the flexible pipe. In the case of the pipe joint of the flexible pipe, the pipe joint of the flexible pipe is characterized in that the retainer is provided with a plurality of anti-drop portions which are respectively hooked on the outer peripheral surface of the flexible pipe; The fixing portion fixes the plurality of anti-shedding portions. The pipe joint for a flexible pipe according to the fourth aspect of the invention, wherein the fixing portion includes a tubular portion that accommodates the plurality of anti-drop portions, and is more elastic than the anti-drop portion. And the splicing portion is configured to sandwich the detachment preventing portion together with the tubular portion, and is more elastically deformable than the detachment preventing portion, and the pipe joint body further includes: The adhesion portion is provided at a depth of the entrance path when viewed from the inlet port, and the front end portion of the flexible tube is plastically deformed to be closely adhered thereto, and the anti-drop portion is provided with a base portion And the claw portion is provided at the base portion so as to protrude from the base portion toward the through space, and the pressing wheel is provided with the tube In the annular portion covered by the portion, the axial length of the tubular portion is equal to or greater than the sum of the axial length of the nip portion and the axial length of the claw portion and the pitch of the flexible tube, and The length of the axial direction of the nip portion and the axial length of the claw portion and the axial direction length of the annular portion are equal to or smaller than each other. The pipe joint of the flexible pipe according to the fourth aspect of the invention, wherein the pipe joint body further includes an annular sealing portion provided in the inlet passage when viewed from the inlet port. In the depth, the front end portion of the flexible tube is plastically deformed to be in close contact with each other; and the bulging portion is bulged from the inner side of the dense portion toward the inlet port. The pipe joint for a flexible pipe according to the fourth aspect of the invention, wherein the retainer is oriented in a direction different from a specific direction. In the case of being disposed in the aforementioned entry path, the pressing wheel is prevented from entering deeper than a specific position in the body of the pipe joint.