JP4680641B2 - Flexible tube - Google Patents

Description

  The present invention relates to a flexible pipe that is connected to a discharge port for water such as tap water or various aqueous solutions and guides the water or the aqueous solution to a desired position or a position close to the desired position.

  The flexible tube is used by bending or twisting in a desired direction in order to guide water or an aqueous solution in a desired direction, and is basically composed of a metal flexible spiral tube. ing. However, in the metal flexible spiral tube, the peripheral surface of the inner hole may be corroded depending on the properties of the water or aqueous solution to be induced. For this reason, generally, a flexible pipe body having a two-layer structure is formed by inserting a flexible inner tube made of a synthetic resin into an inner hole of a metal flexible spiral pipe, and a tube is formed at each end of the flexible pipe body. A flexible pipe is formed by fitting the joint. In the flexible pipe of this type, the pipe joint is fitted and attached to the outer periphery of the flexible spiral pipe. However, the pipe joint is attached to the inner peripheral surface of the pipe joint on the outer periphery of the flexible spiral pipe. A means for forming a groove portion corresponding to the shape portion and fitting the helical portion of the outer peripheral portion of the distal end of the flexible spiral tube into the groove portion is employed (see Patent Document 1).

In this type of flexible pipe, the flexible pipe body is bent or twisted freely and directed in a desired direction to guide water guided by the flexible pipe body to a desired position or a place similar to this. However, in such a use state, the inner tube constituting the flexible tube body is oriented in a desired direction following the bending and / or twisting of the flexible spiral tube, and the orientation state is maintained. In addition, the inner tube is directed in another direction by the bending and / or twisting of the flexible spiral tube in another direction, and the orientation state is maintained.
JP 2001-336680 A

  By the way, in the flexible tube of this type, when the flexible spiral tube is bent and / or twisted, the groove portion of the pipe joint that fits into the helical portion on the outer periphery of the flexible spiral tube may be scraped. If there is damage, there is a problem that loosening occurs between the flexible spiral pipe and the pipe joint. In addition, if the flexible spiral tube is loosened in the fixing to the pipe joint, excessive bending and / or twisting may occur, and the inner tube may be damaged.

  Therefore, the main object of the present invention is to prevent the occurrence of loosening of the flexible spiral tube at the fixing portion of the outer fitting portion of the pipe joint with respect to the flexible spiral tube of the type of flexible pipe, thereby preventing the fixing portion from being damaged. In addition, it is intended to prevent damage to the inner tube due to excessive bending and / or twisting of the flexible helical tube due to scraping of the fixing portion.

In the flexible tube of this type, in order to restrict the occurrence of excessive bending and / or twisting of the flexible spiral tube , the flexible spiral tube is disposed in the outer tube having a large number of annular grooves positioned in parallel to each other on the outer peripheral side. It can be configured as a flexible tube that is inserted into the tube . Another object of the present invention is to prevent contamination of the uneven outer peripheral surface having the annular groove portion of the outer tube together with the above-described main purpose in the flexible tube of the type.

Further, in the flexible pipe of the type, in order to facilitate the external fitting operation of the pipe joint to the flexible spiral pipe, the pipe joint is constituted by a pair of semi-cylindrical bodies divided into two along its central axis, Each of these semi-cylindrical bodies can be configured as a flexible tube that is externally fitted and integrated on the outer periphery of the flexible tube main body with the joint surfaces facing each other . Still another object of the present invention is to provide a flexible pipe of the above type in which both the semi-cylindrical bodies of the pipe joint divided into two are externally fitted and fixed to the flexible pipe main body together with the main purpose described above. In addition to preventing the occurrence of an erroneous combination of both half-cylindrical bodies, the two semi-cylindrical bodies are integrated in a state in which the joint surfaces of the half-cylindrical bodies are reliably matched.

Moreover, in the flexible pipe of the said type, the cylindrical joint cover is inserted in the outer periphery of the both semi-cylindrical bodies fitted to the outer periphery of the flexible pipe main body, and the both semi-cylindrical bodies are integrated to constitute a pipe joint. Can be configured into a tube . Still another object of the present invention is to allow the relative insertion of the joint cover to the outer periphery of the pipe joint in the flexible pipe of the type in combination with the main purpose described above, and to attach it accurately. An object of the present invention is to be able to restrict relative rotation between the joint cover and the pipe joint.

  Further, in the flexible pipe of this type, a nozzle is assembled to a pipe joint on the distal end side of the flexible pipe main body, and two types of nozzles, a straight nozzle and a shower nozzle, can be selectively used as the nozzle. There is a type of flexible tube. Still another object of the present invention is to facilitate the selective use of straight nozzles and shower nozzles in the above-mentioned type of flexible pipe, in addition to the main purpose described above.

The present invention relates to a flexible tube, and in particular, a flexible tube main body formed by inserting a flexible inner tube made of a synthetic resin into a metal flexible spiral tube, and externally fitted to the distal end side and the proximal end side of the flexible tube main body. In particular , the present invention relates to a flexible pipe having a first pipe joint and a second pipe joint fixed to the outer periphery of the flexible pipe main body, and a discharge nozzle assembled to the first pipe joint .

The flexible pipe according to the present invention is a flexible pipe of the type described above, and each of the pipe joints is constituted by a pair of semi-cylindrical bodies divided into two along a central axis, and the flexible spiral pipe A cylindrical elastic member is externally fitted to a fixing portion to which each of the pipe joints is fixed, and both half cylinders constituting each of the pipe joints are externally fitted to the flexible pipe body so as to face each other. The pipe joints are fixed to the flexible spiral tube by elastically holding the elastic member from the outer periphery on the inner peripheral surfaces of the two semi-cylindrical bodies while being joined at It is characterized (invention according to claim 1).

In the flexible tube according to the present invention, the flexible tube main body includes an outer tube through which the flexible spiral tube is inserted, and the outer tube includes a plurality of annular groove portions positioned in parallel with each other on the outer peripheral side. The outer tube is fixed to each pipe joint, and the outer peripheral surface of the outer tube is covered with a synthetic resin film (invention according to claim 2).

Further, in the flexible pipe according to the present invention, the joint surface of both half cylinders constituting each of the pipe joints is provided with an engagement portion for positioning the joint surface. (Invention according to claim 3)

Further, in the flexible pipe according to the present invention, the two semi-cylindrical bodies constituting each of the pipe joints are integrated with each other by a cylindrical joint cover inserted on the outer peripheral side to form a pipe joint, Between the inner periphery of the joint cover and the outer periphery of the semi-cylindrical bodies, a guide portion for guiding relative insertion of the joint cover with respect to the semi-cylindrical bodies is provided. Invention according to claim 4).

In the flexible pipe according to the present invention, two types of nozzles, that is, a straight nozzle and a shower nozzle, can be selectively used , and the straight nozzle is screwed to the first pipe joint , and the shower nozzle Is characterized in that it is detachably assembled to the outer periphery of the tip of the straight nozzle via an annular seal member (invention according to claim 5).

In the flexible pipe according to claim 1 of the present invention , as a means for fixing the pipe joint to the flexible spiral pipe, a pipe joint that externally fits an annular elastic member that is externally fitted to a fixed portion of the flexible spiral pipe. A means of elastically holding the inner peripheral surface is adopted. For this reason, even if the flexible tube main body is bent and / or twisted, damage at the fixing portion between the flexible spiral tube and the pipe joint can be greatly suppressed, and the flexible helix caused by the damage at the fixing portion. It is possible to prevent loosening of the pipe relative to the pipe joint. As a result, in the flexible pipe, the flexible helical pipe is not excessively bent and / or twisted due to loose fixing between the flexible helical pipe and the pipe joint, and the inner tube may be damaged. There is no. In the flexible pipe, in particular, a pipe joint divided into two half cylinders is adopted as the pipe joint, so that the pipe joint can be easily and accurately assembled to the flexible spiral pipe on which the elastic member is fitted. There is a big advantage of being made.

  In the flexible tube according to claim 2 of the present invention, the outer tube having a plurality of annular grooves located in parallel with each other on the outer peripheral side is flexible in order to restrict the occurrence of excessive bending and / or twisting of the flexible helical tube. The outer periphery of the spiral tube is covered. For this reason, in the flexible tube, the outer peripheral surface of the outer tube is exposed to the outside air and is most easily contaminated, and contaminants are likely to adhere to the grooves and remain. On the other hand, in the flexible tube, since the outer peripheral surface of the outer tube is covered with the synthetic resin film, the synthetic resin film prevents contamination of the outer peripheral surface of the outer tube. In addition, for the contamination of the synthetic resin film, since the surface of the synthetic resin film is smooth and does not have the uneven shape as the outer peripheral surface of the outer tube, it adheres to the surface of the synthetic resin film. It is easy to remove the contaminants.

In the flexible pipe according to claim 3 of the present invention, the internal shapes and structures of the two semi-cylindrical bodies constituting the pipe joint are not exactly the same, and therefore, a correct combination of the two semi-cylindrical bodies is necessary for external fitting. . In the flexible tube, an engagement portion for positioning the joint surfaces is provided on the joint surfaces of both semicylindrical bodies. For this reason, by confirming the engagement sites provided on the joint surfaces of both semi-cylindrical bodies and selecting the semi-cylindrical bodies of the engagement sites having different shapes or structures as a set of semi-cylindrical bodies, It can prevent the wrong combination of the body. In addition, when both the semi-cylindrical bodies are fitted to the outer peripheral surface of the flexible spiral tube, the joint surfaces of both the semi-cylindrical bodies are positioned relative to each other by engaging the engaging portions of both the semi-cylindrical bodies with each other. Both the semi-cylindrical bodies can be fixed in a state where their joint surfaces are surely matched.

In the flexible pipe according to claim 4 of the present invention, both semi-cylindrical bodies constituting each pipe joint are integrated with each other by a cylindrical joint cover inserted on the outer peripheral side, Between the circumference and the outer circumferences of both semi-cylindrical bodies, a guide portion for guiding relative insertion of the joint cover with respect to each semi-cylindrical body is provided. For this reason, it is easy to attach the joint cover to both semi-cylindrical bodies, and each pipe joint can be reliably and easily attached to the flexible spiral pipe.

  The flexible pipe according to claim 5 of the present invention includes two types of nozzles, a straight nozzle and a shower nozzle, as nozzles connected to the end of the inner tube constituting the flexible pipe main body, and selectively selects both of these nozzles. It is configured to be usable, and it is possible to select different discharge states of water and aqueous solution discharged from the nozzle. In the flexible pipe, each nozzle is attached to the pipe joint by screwing the straight nozzle to the pipe joint and fitting and fixing the shower nozzle to the outer periphery of the tip of the straight nozzle via an annular seal member. ing. For this reason, in the flexible pipe, there is a convenience that the use of the shower nozzle and the straight nozzle can be selected only by attaching and detaching the shower nozzle to and from the straight nozzle, and the shower nozzle and the straight nozzle are attached and detached. This is also easy.

  The present invention relates to a flexible tube. The flexible pipe according to the present invention is connected to a discharge port of general water such as tap water, a discharge port of a storage tank that stores water or various aqueous solutions, a discharge port of treated water processed by various processing apparatuses, and the like. The water and the aqueous solution discharged from these discharge ports function to guide and discharge to a desired position or the vicinity thereof. 1 and 2 show a flexible tube according to an embodiment of the present invention. The flexible tube functions to induce and discharge the electrolyzed water generated by the electrolyzed water generating device, and the electrolyzed water supply port (discharge port) of the electrolyzed water generating device or electrolysis It is used by connecting to the water supply port (discharge port) of the generated water storage tank.

  As shown in FIGS. 1 and 2, the flexible pipe includes a flexible pipe main body 10, a pair of pipe joints 20 a and 20 b fitted to the outer periphery of each end of the flexible pipe main body 10, and a distal end side. The straight nozzle 30a assembled to the pipe joint 20a and the shower nozzle 30b connected to the tip of the straight nozzle 30a. 2 and 3, the flexible tube main body 10 includes an inner tube 11, a flexible spiral tube 12, and an outer tube 13. The outer tube 13 is an outer layer, and the flexible spiral tube 12 is an intermediate layer. It has a three-layer structure with 11 as an inner layer.

  The inner tube 11 constituting the flexible tube body 10 is a flexible tube having a predetermined length made of synthetic resin (including synthetic rubber). The flexible spiral tube 12 is a spiral tube formed by winding a narrow metal band in a spiral shape, and can be bent and / or twisted freely. The outer tube 13 is made of synthetic resin, and integrally has a large number of annular groove portions 13b positioned in parallel with each other on the outer periphery of a cylindrical portion 13a having a predetermined length. The annular groove portion 13b has a predetermined depth, and there are many annular grooves 13b in the longitudinal direction of the cylindrical portion 13a, and the outer tube 13 is formed in a bellows shape. Thereby, the outer tube 13 has a structure that bends a predetermined amount but does not twist. The outer peripheral surface of the outer tube 13 is covered with a synthetic resin film 13c.

The distal end side pipe joint 20a and the proximal end side pipe joint 20b attached to each end of the flexible pipe body 10 have substantially the same configuration. Therefore, the configuration of the pipe joint and the mounting structure for the flexible pipe main body 10 will be described using the pipe joint 20a on the distal end side as a representative example. The pipe joints 20a and 20b correspond to the first pipe joint and the second pipe joint defined in the present invention.

  2 to 4, the pipe joint 20 a includes a pair of semi-cylindrical bodies 21 and 22 having a shape similar to each other and divided into two along the central axis of the cylindrical body, It is comprised by the joint cover 23 fitted to the outer periphery of the semi-cylindrical bodies 21 and 22. Both the semi-cylindrical bodies 21 and 22 are attached to the outer periphery of the end portion of the flexible pipe main body 10 by fitting (external fitting) from the upper and lower sides or the left and right outer sides, and by fitting the joint cover 23, the pipe joint 20a. Configured. The other pipe joint 20b is configured similarly to the pipe joint 20a.

  The semi-cylindrical bodies 21 and 22 constituting the pipe joint 20a are formed as stepped inner holes. The stepped inner holes of the semi-cylindrical bodies 21 and 22 are, from the tip end side, large-diameter first inner holes 21a and 22a, medium-diameter second inner holes 21b and 22b, small-diameter third inner holes, 21c, 22c, medium-diameter fourth inner holes 21d and 22d, and large-diameter fifth inner holes 21e and 22e. The first inner holes 21a and 22a are screw holes in which screws are formed on the inner peripheral surface. It has become. The fifth inner holes 21e and 22e are annular groove holes in which a plurality of annular grooves are formed on the inner peripheral surface. Both the semi-cylindrical bodies 21 and 22 have joint surfaces 21f and 22f that are joined to each other, and an engagement convex portion 21g is formed on one joint surface 21f, and an engagement convex portion is formed on the other joint surface 22f. An engaging recess 22g facing 21g is formed. The engaging convex portion 21g and the engaging concave portion 22g are engaged with each other and function to position the joint surfaces 21f and 22f.

  The joint cover 23 is a cylindrical body that can be relatively inserted into the outer periphery of both the semi-cylindrical bodies 21 and 22 that are joined to each other, and the inner surface of the cover body 23a has a center of the inner hole. Two ridges 23b protruding to the side are formed. On the other hand, concave grooves 21h and 22h projecting toward the center side of the inner hole are formed on the outer peripheral surfaces of the semi-cylindrical bodies 21 and 22, respectively. Each convex strip 23b of the joint cover 23 is formed so as to be able to be inserted into each concave groove 21h, 22h of each semi-cylindrical body 21, 22, and these two convex strips 23b and each concave groove 21h, 22h, Functions as a guide portion at the time of relative insertion with respect to the outer peripheries of the semi-cylindrical bodies 21 and 22 of the joint cover 23.

  The straight nozzle 30a is composed of a nozzle body 31 that is a cylindrical body with a bottom, and is provided with a circular and large-diameter discharge hole 32 in a deep bottom portion on the distal end side. The nozzle body 31 includes a central cylindrical portion 31a, a conical cylindrical portion 31b that is gradually reduced in diameter located on the distal end side thereof, and a mounting cylindrical portion 31c that is formed with a screw located on the proximal end side. Has been. The mounting cylinder portion 31c is configured to be insertable while being screwed into a screw hole formed by the first inner holes 21a and 22a of both the semi-cylindrical bodies 21 and 22 of the pipe joint 20a (hereinafter referred to as screw holes 21a and 22a). Yes.

  On the other hand, the shower nozzle 30b is composed of a nozzle body 33 which is a bottomed cylindrical body, and is provided with a plurality of discharge holes 34 which gradually decrease in diameter and extend to the distal end side at the deep bottom portion on the distal end side. The nozzle body 33 is composed of a large-diameter proximal cylindrical portion 33a and a slightly smaller-diameter distal cylindrical portion 33b, and a boundary portion between the proximal cylindrical portion 33a and the distal cylindrical portion 33b in the inner hole is formed. A step 33c is formed. The shower nozzle 30b can be inserted on the outer peripheral side of the straight nozzle 30a. When the shower nozzle 30b is inserted on the outer peripheral side of the straight nozzle 30a, the shower nozzle 30b is annularly provided in the step portion 33c in the inner hole of the nozzle body 33. The seal member 35 a is detachably fitted to the outer periphery of the central cylindrical portion 31 a of the nozzle body 31 in a state where the seal member 35 a is in contact with the outer peripheral side step portion of the nozzle body 31. In such a fitting state of the shower nozzle 30b, the conical cylindrical portion 31b of the straight nozzle 30a faces the inner hole of the distal end side cylindrical portion 33b of the shower nozzle 30b.

  In order to construct a flexible pipe made of such constituent members, first, the flexible pipe body 10 is constructed, and then the pipe joints 20a, 20b are externally fitted to the respective ends of the flexible pipe body 10, and finally, the straight nozzle 30a. Is screwed to the pipe joint 20a, and if necessary, the shower nozzle 30b is fitted to the outer periphery of the straight nozzle 30a.

  In constructing the flexible tube body 10, as shown in FIG. 3, first, a cylindrical elastic member 14 is fitted to the outer periphery of the distal end portion of the flexible spiral tube 12, and the flexible spiral tube 12 in this state is attached to the outer periphery. The inside of the inner hole of the tube 13 is inserted. Next, the inner tube 11 is inserted into the inner hole from the tip of the flexible spiral tube 12, and the core 15 is inserted and assembled to each end of the inner tube 11 inserted through the inner hole. The pipe joints 20a and 20b are externally fitted and assembled to the outer periphery of each end of the flexible pipe body 10 formed as described above.

  In order to assemble each pipe joint 20a, 20b to each end of the flexible pipe main body 10, both the semi-cylindrical bodies 21, 22 constituting each pipe joint 20a, 20b are arranged on the outer periphery of the flexible pipe main body 10, on the left or right side thereof. Fitting (external fitting) from the top and bottom sides. Thereby, the engaging convex part 21g and the engaging concave part 22g provided on the joint surfaces 21f and 22f of the half-cylindrical bodies 21 and 22 are engaged with each other, and both the semi-cylindrical bodies 21 and 22 are coupled to the joint surfaces 21f and 22f. 22f is joined in a state of being matched with each other. In this manner, the joint cover 23 is inserted and fitted to the outer circumferences of the semi-cylindrical bodies 21 and 22 that are fitted and joined to the outer circumferences of the respective end portions of the flexible tube main body 10. Thereby, both the semi-cylindrical bodies 21 and 22 are fixed to each other, and constitute the pipe joints 20 a and 20 b together with the joint cover 23.

  In each of the constructed pipe joints 20a and 20b, as shown in FIG. 2 showing the pipe joint 20a, the inner peripheral surface of the fourth inner holes 21d and 22d of the pipe joint 20a is the tip of the flexible spiral pipe 12. The elastic member 14 fitted to the outer circumferential side is elastically clamped from the outer peripheral side and fitted into the annular convex portion which is the cylindrical portion 13a of the outer tube 13 in each annular groove portion of the fifth inner holes 21e and 22e. To do. Thereby, each pipe joint 20a, 20b is fixed to the outer periphery of the distal end portion of the outer tube 13 constituting the flexible tube main body 10, and is fixed to the distal end portion of the flexible spiral tube 12. Moreover, each pipe joint 20a, 20b has the outward flange part 15a of the core 15 fitted to the end part of the inner tube 11 positioned in the second inner holes 21b, 22b and brought into contact with the inner wall surface thereof. The inner tube 11 is fixed to the tip.

  As described above, the pipe joint 20a that is fitted and fitted to the end of the flexible pipe body 10 is provided with an annular seal member 35b on the back wall step surfaces of the screw holes 21a and 22a that are the first inner holes. In the state of contact, the straight nozzle 30a is screwed and screwed. As a result, the straight nozzle 30a is screwed in a liquid-tight manner to the distal end portion of the pipe joint 20a. In addition, the straight nozzle 30a can be removed from the said front-end | tip part by screwing back from the front-end | tip part of the pipe joint 20a. Moreover, the shower nozzle 30b is fitted and attached to the outer periphery of the straight nozzle 30a as needed. When attaching the shower nozzle 30b, the annular seal member 35a is brought into contact with the step portion 33c in the inner hole of the nozzle body 33 of the shower nozzle 30b, and in this state, it is inserted into the outer periphery of the nozzle body 31 of the straight nozzle 30a. Fit with. Thereby, the shower nozzle 30b fits liquid-tightly on the outer periphery of the straight nozzle 30a. The shower nozzle 30b can be pulled out from the outer periphery of the straight nozzle 30a and removed.

  In the flexible pipe having such a configuration, when the flexible spiral pipe 12 and the pipe joints 20a and 20b are fixed, a pipe joint in which an annular elastic member 14 that is externally fitted to a fixed portion of the flexible spiral pipe 12 is fitted. Both the semi-cylindrical bodies 21 and 22 of 20a and 20b employ a means for elastically holding them between the inner peripheral surfaces of the fourth inner holes 21d and 22d. For this reason, even if the flexible tube body 10 is bent and / or twisted, there is almost no damage at the fixing portion between the flexible spiral tube 12 and the pipe joints 20a and 20b, and the flexible spiral tube is caused by the damage at the fixing portion. 12 is prevented from being loosened. As a result, in the flexible tube 10, the flexible spiral tube 12 is not excessively bent and / or twisted due to loose fixing between the flexible spiral tube 12 and the pipe joints 20 a and 20 b. There is no risk of damaging the inner tube 11.

  Moreover, in the said flexible pipe, in order to control the generation | occurrence | production of the excessive bending and / or twist of the flexible spiral pipe 12, it is flexible spiral pipe by the outer tube 13 which has many annular groove parts 13b located mutually in parallel on an outer peripheral side. The outer periphery of 12 is covered. For this reason, in the flexible tube, when the outer peripheral surface of the outer tube 13 is exposed to the outside air, the outer peripheral surface of the outer tube 13 is most easily contaminated, and the contaminant is easily fixed to each groove portion 13b. . On the other hand, in the flexible tube, since the outer peripheral surface of the outer tube 13 is covered with the synthetic resin film 13c, the synthetic resin film 13c prevents the outer peripheral surface of the outer tube 13 from being contaminated. Moreover, since the surface of the synthetic resin film 13c is smooth and does not have the uneven shape as the outer peripheral surface of the outer tube 13 with respect to the contamination of the synthetic resin film 13c, the surface of the synthetic resin film 13c Removal of adhering contaminants is easy.

  Further, in the flexible pipe, the pipe joints 20a and 20b have a pair of semi-cylindrical bodies 21 and 22 divided along the central axis as main constituent members, and the flexible pipe main bodies of both the semi-cylindrical bodies 21 and 22 are used. 10 is easily fitted to the outer periphery. In this case, the semi-cylindrical body 21 and the semi-cylindrical body 22 are slightly different in internal shape and structure. Therefore, when fitting externally, the semi-cylindrical body 21 and the semi-cylindrical body 22 are combined so as to be sure. is necessary. In the flexible tube, an engagement convex portion 21g and an engagement concave portion 22g are provided on the joint surfaces 21f and 22f of the semi-cylindrical bodies 21 and 22, respectively, for positioning the joint surfaces. For this reason, the semi-cylindrical body 21 and the semi-cylindrical body 22 can be definitely combined by confirming the engaging convex portions 21g and the engaging concave portions 22g provided on the joint surfaces 21f and 22f of the semi-cylindrical bodies 21 and 22. it can. Moreover, when both the semi-cylindrical bodies 21 and 22 are fitted to the outer periphery of the flexible tube main body 10, the engaging convex portions 21g and the engaging concave portions 22g of the semi-cylindrical bodies 21 and 22 are engaged with each other, The joining surfaces 21f and 22f of both the semi-cylindrical bodies 21 and 22 can be positioned with respect to each other, and can be fixed in a state where the joining surfaces 21f and 22f of both the semi-cylindrical bodies 21 and 22 are reliably aligned.

  Further, in the flexible pipe, both the semi-cylindrical bodies 21, 22 are fitted to the outer periphery of the end of the flexible pipe main body 10, and the joint cover 23 is inserted into the outer periphery of the semi-cylindrical bodies 21, 22, 22 are integrated to form pipe joints 20a and 20b. In this case, two protruding ridges 23b are provided on the inner peripheral surface of the joint cover 23, and concave grooves 21h and 22h are provided on the outer peripheral surfaces of the semi-cylindrical bodies 21 and 22, respectively. The concave grooves 21h and 22h serve as guide portions for guiding the insertion of the joint cover 23 into both the semi-cylindrical bodies 21 and 22 as one body. For this reason, the joint cover 23 can be easily inserted into the integrated object and can be covered in a reliable state.

  In the flexible pipe, two types of nozzles, that is, a straight nozzle 30a and a shower nozzle 30b, can be selected and used as nozzles attached to the pipe joint 20a. In this case, for the straight nozzle 30a, an attachment means for screwing to the pipe joint 20a is adopted, and for the shower nozzle 30b, a liquid-tight seal is provided on the outer periphery of the front end portion of the straight nozzle 30a via an annular seal member 35a. Are fitted and fixed and can be removed from the outer periphery of the tip of the straight nozzle 30a. For this reason, the shower nozzle 30b can be easily attached to and detached from the straight nozzle 30a. The straight nozzle 30a is used when the shower nozzle 30b is detached from the straight nozzle 30a, and the shower nozzle 30b is attached to the straight nozzle 30a. A shower nozzle 30b can be used.

It is a side view of a flexible tube concerning one embodiment of the present invention. It is sectional drawing which follows the arrow 2-2 line | wire of FIG. 1 in the flexible tube. It is a perspective view of each structural member of the flexible tube main body which comprises the flexible tube. It is sectional drawing of the pipe joint which comprises the flexible pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Flexible pipe main body, 11 ... Inner tube , 12 ... Flexible spiral tube, 13 ... Outer tube, 13a ... Cylindrical part, 13b ... Cylindrical groove part, 13c ... Synthetic resin film, 14 ... Elastic member, 15 ... Core, 20a, 20b ... pipe joints, 21, 22 ... semi-cylindrical bodies, 21a, 22a ... first inner holes (screw holes), 21b, 22b ... second inner holes, 21c, 22c ... third inner holes, 21d, 22d ... fourth inside Hole, 21e, 22e ... 5th inner hole, 21f, 22f ... Joint surface, 21g ... Engaging convex part, 22g ... Engaging concave part, 21h, 22h ... Concave groove, 23 ... Joint cover, 23a ... Cover main body, 23b ... Projection, 30a ... straight nozzle, 31 ... nozzle body, 31a ... central cylindrical portion, 31b ... conical tube portion, 31c ... mounting tube portion, 32 ... discharge port, 30b ... shower nozzle, 33 ... nozzle body, 3 a ... base end side cylindrical portion, 33b ... distal end side cylindrical portion, 33c ... step portion, 34 ... discharge hole, 35a, 35b ... sealing member.

Claims (5)

A flexible tube body made by inserting a flexible inner tube made of a synthetic resin into a metal flexible spiral tube, and fitted to the distal end and the base end of the flexible tube body and fixed to the outer periphery of the flexible tube body a first tube joint and the second tube joint which is a flexible tube with a nozzle for ejection is assembled to the first tube joint, along said respective fittings central axis 2 together are constituted by divided pair of semi-cylindrical body, the flexible spiral tube the tubular elastic member is a fixed portion each pipe joint is fixed is being fitted, constituting the respective pipe fitting The two half cylinders are externally fitted to the flexible tube main body and joined at the joint surfaces facing each other, and the elastic member is elastically sandwiched from the outer circumference by the inner circumferential surfaces of the two half cylinders. Each pipe connection Flexible pipe, characterized in that it is fixed to the flexible spiral tube. 2. The flexible tube according to claim 1, wherein the flexible tube main body includes an outer tube through which the flexible spiral tube is inserted, and the outer tube has a plurality of annular groove portions positioned in parallel with each other on the outer peripheral side. A flexible pipe characterized in that each end is fixed to each pipe joint, and the outer peripheral surface of the outer tube is covered with a synthetic resin film. 3. The flexible pipe according to claim 1, wherein a joining surface of both half cylinders constituting each of the pipe joints is provided with an engaging portion for positioning the joining surface of each other. Flexible tube. The flexible pipe according to any one of claims 1 to 3, wherein both semi-cylindrical bodies constituting each pipe joint are integrated with each other by a cylindrical joint cover inserted on the outer peripheral side. A joint is formed, and between the inner periphery of the joint cover and the outer periphery of the two semi-cylindrical bodies, a guide portion for guiding relative insertion of the joint cover with respect to the two semi-cylindrical bodies is provided. A flexible tube. It is a flexible pipe | tube as described in any one of Claims 1-4, The said flexible pipe | tube is comprised so that two types of nozzles, a straight nozzle and a shower nozzle, can be used properly , The said straight nozzle is said 1st. A flexible pipe which is screwed to a pipe joint , and wherein the shower nozzle is removably assembled to the outer periphery of the straight nozzle through an annular seal member.

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