JPH056286U - Pipe fitting - Google Patents

Abstract

(57) [Summary] [Purpose] The connection can be made with one touch and self-tightening by fluid pressure, the number of parts can be reduced, the structure is simple and fluid leakage can be eliminated, and expensive assembly machines etc. are not required. To facilitate stock preparation. [Structure] The socket 4 is attached to the front cylindrical portion 1b of the joint body 1, the tapered surface 4b is formed on the inner peripheral surface of the socket 4, and the tapered surface 5a is formed on the inner peripheral surface of the socket 4 and on the outer peripheral surface thereof. Diameter-reducible insert member 5 having facing flange 5d
The inward flange 5d is pushed by the step portion 6c of the nipple 6 by the fluid pressure, and the hose 7 is self-tightened by the wedge action with the tapered surfaces 4b, 5a by the movement of the insert member 5, and the assembly machine is connected by one-touch connection. It eliminates the need for items, etc., and facilitates inventory for users.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This invention relates to a pipe joint, and in particular, does not require an assembly machine or the like. And a pipe joint for a fluid hose that can be easily assembled.

[0002]

[Prior art]

  Conventionally, the fluid hose is connected to the hose and the pipe joint in advance and the assembly hose is Then used. And as for the pipe joint of the fluid hose, as shown in FIG. 19 and FIG. Insert the hose 41 into the joint body, for example, the joint portion 40a of the nipple 40, The socket 42 is arranged on the outer periphery of the screw 41, and the eight-sided clamping claw 43a or the circular die 44a is attached. Tighten with the hydraulic crimping machine 43 or 44, and connect the hose 41 and the nipple 40. The means to continue was taken.

[0003]   By the way, the assembly of the hydraulic / pneumatic hose has a hose size (caliber) Set the pressure resistance, length, fittings, etc., and use them in the factory or a designated assembly shop. The assembly machine using hydraulic pressure etc. Therefore, the user and the manufacturer (factory or designated shop, etc.) verify the drawings and approve them. Etc. are manufactured and delivered. By the way, this is a floater From the perspective of (1) hose diameter, pressure resistance, length, fitting gold in user design department Determine the specifications of the equipment, etc., (2) place an order in the purchasing department of the user, and (3) make an order for the order. The sales department of the manufacturer receives an order, and (4) applies to the technical department of the manufacturer for the approval drawing, 5) Submit the completed approval drawing from the maker sales department to the user purchasing department. (6) Before Submit the approval diagram from the user purchasing department to the user technical department, and Approval application diagram approved by the technical department and returned (8) User approval department approved approval diagram It is returned to the sales department, (9) the manufacturer sales department receives this approval diagram, and (10) the manufacturer receives the approval diagram. (6) The technical department receives the approval drawing, issues the production specifications, and (11) the manufacturer produces the product. Received the production specification, and based on this, manufacture and ship the product (in this process, Preparation, fitting preparation, hose cutting, fitting insertion, hose assembly production, pressure test Strike, shipping inspection, packaging, packing, etc.) (12) Delivery and receipt to the user purchasing department. It becomes a process.

[0004]

[Problems to be solved by the device]

  As mentioned above, in the case of conventional pipe joint specifications, whether specification determination, ordering, approval drawing A large amount of time, labor, and expensive equipment investment such as crimping machine Needed.

[0005]   Further, in the above-mentioned conventional pipe joint structure, with respect to the attachment and connection of the pipe joint, It requires tools, etc. and has poor workability in narrow spaces, and even after installation is complete. There was a possibility of fluid leakage due to loose internal pressure and fastening force.

[0006]   This invention was made in view of the above circumstances. Made it easy to purchase or outsource the hoses, special metal fittings, and components in advance. You can prepare the required number immediately when needed, and it is expensive when assembling. Easy assembly in a short time without the need for an assembly machine And the self-tightening due to the thrust of the internal fluid pressure, The present invention provides a pipe joint capable of preventing separation of the pipe.

[0007]

[Means for Solving the Problems]

  In order to solve the above problems, the present invention provides a female joint and a male joint for inserting a hose. , An outer cylinder arranged around the hose, and a hose between the male joint and the outer cylinder. Insert and connect the hose to the pipe joint. A slidable insert member is formed, and the inner peripheral surface of the outer cylinder is pointed toward the insertion opening. A tapered surface that becomes thinner is formed, and the tapered surface of the outer cylinder is formed on the outer peripheral surface of the insert member. To form a taper surface, and insert a hose between the insert member and the male joint. It is configured to connect the inlet pipe joint and the hose.

[0008]

【Example】   A first embodiment of the present invention will be described below with reference to the drawings. Figure 1 is a book It is an axial sectional side view of the pipe joint which concerns on 1st Example of a device. Reference numeral A in the figure is a female joint The female joint A is a joint having a threaded portion 1a at one end and a tip cylindrical portion 1b at the insertion port side at the other end. The female joint A has a small-diameter hole 2 and a large-diameter hole 3 formed therein.

[0009]   Further, an annular groove 1c is formed on the outer circumference of the tip cylindrical portion 1b. This annular groove 1c A socket 4 which is a type of an outer cylinder is attached to the socket by fitting the locking portion 4a thereof. ing. Further, on the inner peripheral surface of the socket 4, from the substantially central portion to the vicinity of the tip, A tapered taper surface 4b is formed toward the insertion opening, and the tip of the socket 4 is The end portion is an insertion port 4c having substantially the same inner diameter.

[0010]   Inside the socket 4, a substantially cylindrical insert member 5 capable of reducing its diameter is provided. Has been. The insert member 5 is formed on the outer peripheral surface of the insert member 5 from the substantially central portion to the tip. And a tapered surface 5a adapted to the tapered surface 4b of the socket 4 is formed. Well The insert member 5 has a protrusion 5b and an annular groove 5c formed on the inner peripheral surface thereof. It is formed in a shape. Further, the rear end portion of the insert member 5 (on the left side in FIG. 1) is directed inward. A flange 5d is formed. In addition, as shown in FIG. An axial slit 5e is formed on the circumference and is formed in a substantially C-shaped cross section.

[0011]   A male joint is provided inside the large diameter hole 3 of the joint body 1 and the insert member 5. A certain nipple 6 is arranged so as to be slidable in the axial direction. The nipple 6 is mainly Sliding inside the large-diameter hole 3 of the joint body 1 and having a large outer diameter that is approximately the same as the inner diameter of the large-diameter hole 3. It is composed of a large diameter portion 6a and a small diameter portion 6b into which the hose 7 is inserted and connected. A step 6c is formed at the boundary with the portion 6b. In addition, this step 6c It is formed so as to contact the rear end surface of the inward flange 5d of the boot member 5.

[0012]   Further, a concave groove 8 is formed on the outer peripheral surface near the rear end of the large diameter portion 6a of the nipple 6. An O-ring 9 as a sealing material is arranged in the groove 8.

[0013]   Next, the method of connecting the pipe joint and the hose of the first embodiment and its function and effect will be described. Explain. First, cut the hose 7 to a predetermined length, or remove the hose 7 from the outer cover. After removing the portion, connect the hose 7 from the insertion port 4c to the insert member 5 and the nipple 6. Insert in between. After that, by pulling back the nipple 6, the stepped portion 6c of the nipple 6 The rear end surface of the inward flange 5d is pushed, and the wedge action causes the taper of the insert member 5 to The tapered surface 5a is pressed against the tapered surface 4b of the socket 4, the insert member 5 is reduced in diameter, Tighten the hose 7 inserted between the insert member 5 and the small diameter portion 6b of the nipple 6. It is supposed to be concluded. Assembling the hose 7 and the pipe joint only by this work Lee is complete.   When fluid pressure is generated in the assembly hose in this state, this fluid The nipple 6 is pushed by the thrust of the pressure, and the step 6c of the nipple 6 inserts it. The inward flange 5d of the member 5 is pushed, and the insert member 5 moves to the right in FIG. To do. In this case, due to the wedge action, the tapered surface 5a of the insert member 5 becomes a socket. 4 is pressed by the tapered surface 4b of the nipple 4 to reduce the diameter, and the outer circumference of the small diameter portion 6b of the nipple 6 and the inserter The hose 7 inserted between the inner periphery of the tongue member 5 is pressed and tightened.

[0014]   Simply insert the hose 7 into the nipple 6 as described above to The pipe joint and hose 7 are self-tightened by the thrust due to the internal pressure of the fluid generated in The more the force is applied, the more the self-tightening force is increased and the hose 7 and the pipe joint are prevented from being separated from each other. There is no fluid leakage. Further, O phosphorus is used as a sealing material on the large diameter portion 6a of the nipple 6. Since the plug is provided, the prevention of fluid leakage is improved.

[0015]   Also, as described above, simply inserting the hose 7 will prevent fluid leakage and the like easily and in a short time. Since the assembly hose is completed, an expensive assembly machine etc. is required. do not do. Therefore, a hose that the user has set necessary conditions such as size and pressure resistance in advance If you buy this pipe joint or stock it on consignment, you can get the number you need immediately when you need it. Ready, reduce the amount of time and labor from ordering to delivery, and reduce expensive equipment You can

[0016]   As a modification of the first embodiment, as shown in FIG. 3, the large diameter portion 6 of the nipple 6 is used. Without forming a, the nipple 6 is formed straight and the nipple 6 flows An outer peripheral surface of the inward flange 5d of the insert member 5 which forms the body circulation hole 6d Alternatively, a groove may be provided on the inner peripheral surface and the O-ring 9 may be provided in each groove.

[0017]   Further, the inward flange 5d may be formed as a separate body as in the modification shown in FIG. Yes. In addition, the concave groove 8 and the O-ring 9 in the first embodiment and the modified example are It may be provided on the inner peripheral surface of the large diameter hole 3 or the inner peripheral surface of the socket 4 and the outer peripheral surface of the nipple 6. In addition, the insert member 5 in the first embodiment and the modified example has a plurality of axial slits. It may be formed into a hood or a split mold.

[0018]   When formed as in both of the above-mentioned modified examples, the fluid pressure is generated by the fluid passing through the flow hole 6d. Inward of the insert member 5 that is transmitted to the inward flange 5d and functions as a thrust portion Pressing the flange 5d and further tightening and tightening the hose 7 by the wedge action. become. In this case, since the inward flange 5d has a large surface area, the fluid pressure is surely transmitted. Reached Further, the O-ring 9 is provided on the outer peripheral surface, the inner peripheral surface, etc. of the inward flange 5d. Therefore, fluid leakage is reliably prevented. Other effects are substantially the same as those of the first embodiment. is there.

[0019]   Next, a second embodiment of this invention will be described with reference to FIG. It should be noted that The same reference numerals are used and the description thereof is omitted. The second embodiment is the first one described above. The main difference from the embodiment is that the outer cylinder (socket) is integrated with the joint body. It is the point that is formed. That is, as shown in FIG. 5, the female joint B has a threaded portion 1a and The outer cylinder portion 10 is formed by integrally forming the joint body and the outer cylinder. Then, the outer cylindrical portion 10 is inserted into the inner peripheral surface from the substantially central portion thereof to the vicinity of the tip. A taper surface 10a that is tapered toward the mouth is formed, and the tip of the outer tubular portion 10 is substantially An insertion port 10b having the same inner diameter is formed.

[0020]   Further, a small diameter hole 11 and a large diameter hole 12 are formed inside the female joint B. A nipple 13, which is a type of male member, is slidably disposed in the axial direction of the shaft 12. There is. The nipple 13 is composed of a large diameter portion 13a and a small diameter portion 13b. A step portion 13c is formed at a boundary between the small diameter portion 13b and the small diameter portion 13b. The large diameter portion 13 The outer diameter of a is formed to be substantially the same as the inner diameter of the large-diameter hole 12, and the outer surface of the large-diameter portion 13a has a concave shape. A groove 14 is formed, and an O-ring 9 as a sealing material is fitted in the groove 14. It

[0021]   Further, between the inside of the outer tubular portion 10 of the female joint B and the small diameter portion 13b of the nipple 13 Is a slidable insert member 15 having an outer diameter substantially the same as the inner diameter of the outer tubular portion 10. It is movably arranged. On the outer peripheral surface of the insert member 15, A taper surface 15a corresponding to the taper surface 10a of the outer cylindrical portion 10 near the insertion opening. Are formed. Further, the inner peripheral surface of the insert member 15 has a protrusion 15b and an annular groove. 15c are formed to have a corrugated cross section. After the insert member 15 At the end portion (on the left side in FIG. 5), a width approximately the same as the height of the stepped portion 13c of the nipple 13 is provided. An inwardly facing flange 15d is formed to have a rear end portion of the inwardly facing flange 15d. Is in contact with the stepped portion 13c of the nipple 13.

[0022]   According to the pipe joint of the second embodiment, the female joint B integrally forms the joint body and the outer cylinder. Since the outer cylindrical portion 10 has the above, the nipple 13 is attached to the joint body during connection and assembly. The assembly hose is completed simply by inserting the hose 7 with the attached. Well Since it does not require an external cylinder as in the past, it requires only a small number of parts, and fits on the tip of the female joint. It is not necessary to form a groove or the like.

[0023]   Further, a nipple 13 having an outer diameter substantially the same as the inner diameter of the outer tubular portion 10 is provided in the outer tubular portion 10. Since the insert member 15 is provided, the internal structure is simplified and the assembly, Connection work becomes easy, and expensive assembly machines etc. are unnecessary.

[0024]   Further, the contact surface between the inner peripheral surface of the outer tubular portion 10, the nipple 13, and the insert member 15 is structured. Since the structure is simple, fluid leakage prevention is improved, and the outer circumference of the large diameter portion 13a of the nipple 13 is further improved. Since the O-ring is fitted on the surface, fluid leakage is prevented.

[0025]   Further, the height of the stepped portion 13c of the nipple 13 and the inward flange of the insert member 15 Since the width of 15d is formed to have substantially the same size, the fluid pressure applied to the nipple 13 The force is accurately transmitted to the insert member 15, and the wedge action is effectively exerted. In addition to the effect of the simple contact surface structure, the fastening force and fluid leakage prevention are further improved. That Other effects are similar to those of the first embodiment.

[0026]   As a modification of the second embodiment, as shown in FIG. 6, the nipple 13 has a large diameter portion. 13a is formed in a straight shape without being formed, and a fluid flow to the nipple 13 An outer peripheral surface of the inward flange 15d of the insert member 15 which forms the through hole 13d And the groove 16 is provided on the inner peripheral surface, and the O-ring 9 is fitted into each groove 16. You may ask.

[0027]   Further, as shown in FIG. 7, the inward flange 15d may be formed as a separate body. Well In the second embodiment and the modified example, a plurality of slits are formed in the insert member 15. Alternatively, it may be split.

[0028]   When formed as in both of the above-mentioned modified examples, the fluid pressure is not affected by the fluid passing through the flow hole 13d. Insert member 15 that is transmitted to the inward flange 15d and functions as a thrust portion The inward flange 15d is pressed, and the hose 7 is tightly connected and fastened by the wedge action. Will be done. In this case, since the inward flange 15d has a large pressure receiving area, the fluid pressure Power is transmitted reliably. Further, the O-ring 9 is provided on the outer peripheral surface and the inner peripheral surface of the inward flange 15d. Since it is arranged on the surface, fluid leakage is surely prevented. Other effects are the second implementation It is similar to the example. In addition, in the above-described second embodiment and modification, the concave grooves 14 and 16 are It is provided on the inner peripheral surface of the outer cylindrical portion 10 or the outer peripheral surface of the nipple 13, and the O-rings 9 are respectively fitted therein. You may wear it.

[0029]   Next, a third embodiment of the present invention will be described with reference to FIG. Of this third embodiment The difference from the first and second embodiments is that the insert member and nipple (male joint) The point is that they are integrally molded. That is, as shown in FIG. 8, the female joint C Is formed of a joint body 17 having a threaded portion 17a and a tip barrel portion 17b. An annular groove 17c is formed on the outer periphery of 7b. This annular groove 17c has a socket The toe 18 is attached with its locking portion 18a fitted.

[0030]   On the inner peripheral surface of the socket 18, from the substantially central portion to the vicinity of the tip, an insertion opening is formed. A taper surface 18b tapering toward the direction is formed.

[0031]   Further, inside the socket 18, a nick inserted into the large diameter hole 19a of the female joint C is provided. A pull 20 is provided. This nipple 20 connects the nipple and the insert member. It is formed in an integrally molded state. That is, the large diameter hole 19a of the nipple 20 A rising portion 20b is formed from the rear end of the large diameter portion 20a having a length substantially the same as the axial length. , The diameter of the rising portion 20b can be reduced substantially in parallel with the connecting portion 20c (male joint). A cylindrical insert portion 20d is formed. And with this insert part 20d The hose 7 is formed so as to be inserted between the hose 7 and the connecting portion 20c. Also the above The outer peripheral surface of the sart portion 20d has a taper surface corresponding to the tapered surface 18b of the socket 18. The upper surface 20e is formed, and an axial slit is formed in the insert portion 20d. And has a C-shaped cross section. Also, on the outer peripheral surface of the large diameter portion 20a of the nipple 20, Is formed with a groove, and an O-ring 9 is fitted in the groove.

[0032]   According to the pipe joint of the third embodiment, the nipple 20 and the insert portion 20d are integrated. Since the body is molded, when the nipple 20 receives fluid pressure, 20d also moves to the insertion port side. By this movement, the tapered surface 2 of the insert portion 20d 0e is pressed and compressed by the tapered surface 18b of the socket 18 due to the wedge action. The hose 7 inserted in the waist is tightened and fastened.

[0033]   Since the insert portion 20d is integrally molded in this way, it is easy to connect and assemble. Then, insert the hose 7 with the nipple 20 attached to the joint body 17, or The nipple with the hose 7 inserted may be inserted into the joint body 17 with one touch. The assembly hose is completed, the number of parts is small, and the assembly and connection work is completed. It is simple and easy, and since there is no connecting part, fluid leakage is reliably prevented. Na A groove may be provided on the inner peripheral surface of the joint body 17, and an O-ring may be fitted in the groove. Moreover, you may provide a some slit in 20 d of insert parts.

[0034]   Next, a fourth embodiment of this invention will be described with reference to FIG. Features of the fourth embodiment Is that the female joint and the nipple (male joint) are integrally formed. That is, FIG. As shown in FIG. 5, the female joint D has a small diameter portion at the tip of the joint body 21a which is a large diameter portion. The connection portion 21b is integrally formed. Further, the joint body 2 of the connecting portion 21b A flow hole 21c is formed on the 1a side.

[0035]   A fitting step portion 21d is formed at the front end of the outer circumference of the joint body 21a. A socket 22 is attached to the step portion 21d. On the inner surface of this socket 22 Has a tapered tapered surface 22a extending from the substantially central portion thereof to the vicinity of the insertion opening. It

[0036]   Further, a diameter-reducible insert member 2 is provided between the socket 22 and the connection portion 21b. 3 is arranged so as to be slidable in the axial direction. On the outer peripheral surface of the insert member 23, A tapered surface 23a corresponding to the tapered surface 22a of the socket 22 is formed. . An inward flange 23b is formed at the rear end of the insert member 23. . A concave groove is formed on the outer peripheral surface and the inner peripheral surface of the inward flange 23b. An O-ring 9 is fitted in the groove. Also, the insert member 23 has an axial direction A slit is formed.

[0037]   According to the pipe joint of the fourth embodiment, the joint body 21a and the connecting portion 21b are integrally formed. Since it is shaped, the number of parts is small and all that is required is to insert the hose 7. Easy to assemble and connect. In addition, the circulation hole 21c is formed. Therefore, the fluid pressure is applied to the inward flange of the insert member 23 through the flow hole 21c. 23b, the flange 23b is pressed toward the insertion opening side, and the socket 2 2 due to the wedge action of the tapered surface 22a and the tapered surface 23a of the insert member 23. The insert member 23 is reduced in diameter so that the hose 7 inserted between the insert member 23 and the connecting portion 21b is It will be narrowed down and concluded. Other effects are substantially the same as those of the first, second and third embodiments Is.

[0038]   As in the modification shown in FIG. 10, the inward flange 23b is configured as a separate body. You can also do it. In addition, in the above-described fourth embodiment and modification, the concave groove is formed in the socket 22. Even if the O-ring 9 is fitted on each of the inner peripheral surface and the outer peripheral surface of the connecting portion 21b. Good. In addition, a plurality of slits may be formed in the insert member 23 or a split mold may be used. Good.

[0039]   Next, a fifth embodiment of the present invention will be described with reference to FIG. Features of this fifth embodiment The feature is that the female joint body and the outer cylinder (socket) are integrally molded, and the nipple ( This is that the male member) and the insert member are integrally molded.

[0040]   That is, as shown in FIG. 11, the female joint E includes a screw portion 24a and an outer cylinder portion 24b. The joint body 24 is formed. On the inner peripheral surface of the outer cylindrical portion 24b, From the central part to the vicinity of the tip, a taper surface 24c tapering toward the insertion opening is formed. Is made.

[0041]   A nipple 25 is axially slidably disposed in the large diameter hole of the joint body 24. Has been done. The nipple 25 includes a nipple body 25a and a nipple body 25a. A diameter-reducible insert formed by extending from the outer peripheral portion of the base end portion 25b toward the insertion opening. It is formed of a tongue portion 25c. A groove is formed on the outer peripheral surface of the base end portion 25b. An O-ring 9 is fitted in this groove. Also, outside the insert portion 25c A taper surface 25d corresponding to the taper surface 24c of the outer cylindrical portion 24b is formed on the peripheral surface. The slit is formed in the axial direction.

[0042]   According to the pipe joint of the above-mentioned embodiment, the nipple 25 and the nipple body 25a are inserted into the insert. The joint part 25c is integrally molded, so that the joint body is Insert the hose 7 with the pull 25 attached, or the nipple with the hose 7 inserted. Assembly hose is completed with one touch by simply inserting 25 into the joint body. It Further, since the width of the base end portion 25b in the radial direction is relatively thick, The pressure receiving area on which the body pressure is applied is wide, and the fluid pressure is reliably transmitted. The wedge effect between the tapered surface 24c and the tapered surface 25d of the nipple 25 works efficiently. The tightening of the hose 7 by the insert portion 25c of the nipple 25 becomes strong. So The other effects of are similar to those of the other embodiments.

[0043]   A modified example of the fifth embodiment will be described. As shown in FIG. The medium-diameter hole portion 26 and the large-diameter hole 27 are provided, and the medium-diameter hole 26 is provided at the base end portion 25b. Forming an insertion portion 25e having the same length as the above, and fitting the O-ring 9 on the outer periphery of the base end portion 25b. You can also do it.

[0044]   Also, as shown in FIG. 13, the O-ring 9 should be fitted on the outer peripheral surface of the insertion portion 25e. You may. In addition, in the above-mentioned 5th Example and a modification, the outer cylinder part 24b or joint book. A concave groove may be provided on the inner peripheral surface of the body, and an O-ring may be fitted in the concave groove. Well A plurality of slits may be formed in the insert portion 25c.

[0045]   Next, a sixth embodiment of the present invention will be described. The feature of this sixth embodiment is that the joint The point is that the body is integrally formed with the outer cylinder and the nipple. That is, as shown in FIG. In this joint F, the joint body 28a and the outer cylinder portion 28b (socket) are integrally molded. In addition, the joint body 28a and the nipple portion 28c are integrally formed. Also, a flow hole 29 is formed on the joint body 28a side of the nipple portion 28c for allowing fluid to flow therethrough. Is made.   Further, a tapered surface 28d is formed on the inner peripheral surface of the outer tubular portion 28b as in the other embodiments. ing.

[0046]   Further, a diameter-reducible insert member 3 is provided between the outer cylinder portion 28b and the nipple portion 28c. 0 is arranged slidably in the axial direction. In addition, at the rear end of the insert member 30, The facing flange 30a is formed, and the inner peripheral surface and the outer peripheral surface of the flange 30a are concave. A groove is formed, and an O-ring 9 is fitted in this groove. Also insert material The outer peripheral surface of 30 has a tapered surface 30b corresponding to the tapered surface 28d of the outer cylindrical portion 28b. And a slit is formed in the axial direction.

[0047]   The fluid passage of the joint F has a large diameter hole 31 on the joint body 28a side and a nipple portion 28c side. A small diameter hole 32 is formed in.

[0048]   According to the pipe joint of the sixth embodiment, the large diameter hole 31 is formed on the nipple portion 28c side. And the small diameter hole 32 is formed on the nipple portion 28c side, the fluid pressure Is added to the small-diameter hole 32, which makes it easier for the fluid to enter from the circulation hole 29, and The fluid pressure is likely to be applied to the inward flange 30a of the heating member 30. Therefore, taper surface 2 The wedge action of 8d and 30b efficiently occurs, and the diameter reduction of the insert member 30 causes Tightening force is easily applied to the base 7. Other functions and effects are substantially the same as those of the other embodiments. It

[0049]   Further, as shown in the modification of FIG. 15, the inward flange 30a of the insert member 30 is May be configured as a separate member. In addition, in the above-described sixth embodiment and modification, the outer cylinder A concave groove is formed on the inner peripheral surface of the portion 28b and the outer peripheral surface of the nipple portion 28c. The ring 9 may be fitted. In addition, the insert member 30 has a plurality of slips. It may be formed into a mold or formed in a split mold.

[0050]   In addition, the insert members in the above-described embodiments and modified examples are made of metal such as 5, 15, 23. It can be made of plastic, synthetic rubber, etc. It is also possible to form an axial groove on the surface to reduce the diameter. In addition, each example and Shapes of female joint, joint body, outer cylinder, male joint, etc., and sealing materials in modified examples Is not limited to the O-ring of the embodiment, and uses each of the embodiments and fluids. If applicable, it can be applied to both high pressure and low pressure. It can also be applied to connection and connection of.

[0051]   In addition, the pipe joint of the present invention inserts the nipple and the insert member by the pressure of the fluid. Move it to the mouth side, reduce the diameter of the inserted hose with the taper surface of the socket Although it prevents slipping out, etc., as shown in FIGS. 16, 17, and 18, the nipple and insert By providing the elastic portion 33 or the like, for example, in a ring shape, in the arm portion or the socket portion, Movement of the assembly hose even if the fluid pressure is not applied, assembly hose It is possible to have a structure in which the hose does not come off from the joint when it is attached to the equipment.

[0052]

[Effect of device]

  As described above, the present invention has a female joint, a male joint for inserting a hose, and a hoses. It is composed of an outer cylinder arranged on the outer circumference of the pipe, and a hose is inserted between the male joint and the outer cylinder. , In a pipe joint that connects and connects a hose and a pipe joint, the inner side of the outer cylinder is axially A slidable insert member is formed, and the inner peripheral surface of the outer cylinder faces the insertion opening. Taper surface is formed on the outer peripheral surface of the insert member. A taper surface corresponding to the taper surface is formed, and between the insert member and the male joint. Since the hose is inserted and the joint body is connected to the hose, the female joint and male joint are And can be easily and easily connected with one touch without the need for expensive assembly machines. Wear. Therefore, even when assembling and connecting work, no tools are required and it can be placed in a narrow space. Workability is good, and even if fluid pressure is applied after installation is complete, the outer cylinder and insert Wedge action with each tapered surface of the member allows self-tightening to prevent hose disconnection, etc. Fluid leakage due to loose internal pressure and fastening force can be prevented. Also assembly reamer Since there is no need for thins, the number of parts is small, and they can be easily assembled and connected, the manufacturing process Or the process such as the agreement between the user and the manufacturer is simplified, and This has the effect of making it easier for the user to stock each component.

[Brief description of drawings]

FIG. 1 is an axially sectional side view of a pipe joint according to a first embodiment of the present invention.

2A is a cross-sectional side view of an insert member, and FIG. 2B is a cut end view of an YY portion.

FIG. 3 is a diagram showing a modification of the first embodiment.

FIG. 4 is a diagram showing a modification of the first embodiment.

FIG. 5 is a diagram showing a second embodiment.

FIG. 6 is a diagram showing a modification of the second embodiment.

FIG. 7 is a diagram showing a modification of the second embodiment.

FIG. 8 is a diagram showing a third embodiment.

FIG. 9 is a diagram showing a fourth embodiment.

FIG. 10 is a diagram showing a modification of the fourth embodiment.

FIG. 11 is a diagram showing a fifth embodiment.

FIG. 12 is a diagram showing a modification of the fifth embodiment.

FIG. 13 is a diagram showing a modification of the fifth embodiment.

FIG. 14 is a diagram showing a sixth embodiment.

FIG. 15 is a diagram showing a modification of the sixth embodiment.

FIG. 16 is a diagram showing a modified example of each of the above embodiments.

FIG. 17 is a diagram showing a modified example of each of the above embodiments.

FIG. 18 is a diagram showing a modified example of each of the above embodiments.

FIG. 19 is a diagram showing a conventional example.

FIG. 20 is a diagram showing a conventional example.

[Explanation of symbols] 1 Joint body 4 sockets (outer cylinder) 4b Tapered surface 5 Insert member 5a Tapered surface 5d Inward flange (thrust part) 6 Nipple (male joint) 6d distribution hole 7 hose 10 Outer cylinder 10a Tapered surface 13 Nipple (male joint) 13d distribution hole 15 Insert member 15a Tapered surface 15d Inward flange (thrust part) 17 Joint body 18 sockets (outer cylinder) 18b Tapered surface 20 nipple (male joint) 20c Connection part (male joint) 20d insert part 20e Tapered surface 21a Joint body 21c Distribution hole 22 Socket (outer cylinder) 22a Tapered surface 23 Insert member 23a Tapered surface 23b Inward flange (thrust part) 24 Joint body 24b Outer cylinder part 24c Tapered surface 25 nipple (male joint) 25a nipple body 25c insert part 25d taper surface 28a Joint body 28b Outer cylinder part 28c nipple part 28d taper surface 29 circulation holes 30 Insert member 30a Inward flange (thrust part) 30b taper surface 33 Elastic body

Claims (6)

[Scope of utility model registration request] 1. A female joint, and a male joint for inserting a hose,
A pipe joint which is composed of an outer cylinder arranged on the outer circumference of the hose, and inserts the hose between the male joint and the outer cylinder, and connects and connects the hose and the pipe joint. A slidable insert member is formed, a taper surface tapering toward the insertion opening is formed on the inner peripheral surface of the outer cylinder, and an outer peripheral surface of the insert member corresponds to the taper surface of the outer cylinder. A pipe joint having a tapered surface, wherein a hose is inserted between the insert member and the male joint to connect the joint body and the hose. 2. The pipe joint according to claim 1, wherein the female joint and the outer cylinder are integrally molded. 3. The pipe joint according to claim 1, wherein the male joint and the insert member are integrally molded. 4. The pipe joint according to claim 1, wherein the female joint and the male joint are integrally molded. 5. The pipe joint according to claim 1, wherein a thrust portion for transmitting a fluid pressure is formed at a rear end portion of the insert member. 6. The joint is formed with a through hole for transmitting the fluid pressure of the flow path to the insert member.
The pipe joint according to 2, 4, or 5.