JP2008020060A - Coupling for flexible hose - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coupling for a flexible hose which enables a flexible hose to be easily connected to a pipe by hand-tightening, and which can control a water leak. <P>SOLUTION: The coupling 1 for the flexible hose is constituted by a nipple 2, a ring 4, and a collar 3. The nipple 2 has a taper 7. One end of the taper 7 is connected to the pipe, and the other end is inserted into the opening of the flexible hose. Then the ring 4 is screwed to a screw 8 for the ring which is provided on the outer peripheral surface of the nipple 2 closer to the pipe side than the taper 7, and has a ring protrusion 14 on the inner peripheral surface. The collar 3 is idle-fitted to the outer periphery of the tip of the flexible hose when the taper 7 of the nipple 2 is inserted into the flexible hose. The collar 3 is provided so that it can freely rotate independently of the ring 4, and makes an advancing movement by being brought into contact with the ring protrusion 14 of the ring 4 incident to the screwing and fastening of the ring 4 to the screw 8 for the ring. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a soft hose joint for connecting a pipe and a soft hose.

  Irrigation work to the field in the open field is performed by piping irrigation materials such as irrigation hoses and joints. By piping the irrigation material, the water supplied from the water source is irrigated throughout the field. The piping method of the irrigation material includes a fixed piping that installs the irrigation material in each field until the cultivation of the crop is completed, and a mobile piping that installs the irrigation material in the field requiring irrigation each time. is there. In the case of mobile piping, a vinyl chloride soft hose is mainly used as the irrigation hose. This is because the soft hose is very soft, so it has good storage properties and is easy to carry. However, since the soft hose is made of a soft material, wrinkles are likely to occur when piping, and there is a problem that water leaks from the gap.

  Generally, in order to connect a pipe and a soft hose in piping of irrigation material, a nipple for indirectly connecting the pipe and the soft hose, and a metal hose band that presses the soft hose against the nipple And are used.

  For example, as shown in FIG. 20, the cylindrical nipple 102 has one end joined to the tube 101 and the other end inserted into the opening of the soft hose. Then, the soft hose is pressed against the outer peripheral surface of the nipple 102 by the hose band 103 from above the soft hose. Here, examples of the nipple 102 used include an SP nipple (manufactured by Sumika Agricultural Materials Co., Ltd.) and a Machino type joint. In these joints, the soft hose is connected to the joint of the joint of the joint using a hose band.

  With the configuration described above, the metallic hose band 103 bites into a soft hose made of a soft material, and connects the soft hose to the nipple 102. Since the hose band 103 bites into the soft hose, water can be prevented from leaking from the gap between the nipple 102 and the soft hose.

  However, when connecting a tube and a soft hose using a hose band, it is necessary to use a tool such as a screwdriver or a spanner. For this reason, there is a problem that the work becomes complicated and the work efficiency in the field is deteriorated. In addition, the hose band has a problem that the screw part is damaged when the hose band is opened and closed many times and cannot be used.

  Therefore, in order to connect the pipe and the soft hose, a soft hose joint that can be manually tightened without using a tool is known. In general, a joint for soft hose for hand tightening includes a nipple and a collar for pressing the soft hose against the nipple. Hereinafter, a conventional joint for soft tightening hoses will be described in detail with reference to FIGS. 21 and 22.

  First, a one-touch nipple (Sumika Agricultural Materials Co., Ltd.) that presses a soft hose to a nipple only with a collar will be described. FIG. 21A is a side view showing a nipple 201 of a one-touch nipple, and FIG. 21B is a front view and a side view showing a collar 202 of the one-touch nipple.

  The one-touch nipple includes a nipple 201 and a collar 202 as shown in FIGS. 21 (a) and 21 (b).

  As shown in FIG. 21A, the nipple 201 has a cylindrical shape, and a tapered portion 204 is provided at one end thereof, and the diameter of the nipple 201 extends from the tapered portion 204 to the other end of the nipple 201. The smaller it gets. A rubber portion 203 is provided on the outer peripheral surface of the portion where the diameter of the nipple 201 is reduced.

  To connect the one-touch nipple and the soft hose, the collar 202 is passed from the end of the nipple 201 opposite to the side where the tapered part is provided, and the rubber part 203 is provided from the tapered part 204 of the nipple 201. It is inserted into the opening of the soft hose up to a certain position, and the collar 202 is pressed against the rubber part 203 of the nipple 201 from above the soft hose.

  Next, a screw joint (Sumitomo Agricultural Materials Co., Ltd.) that presses the soft hose against the nipple by a ring with a structure in which the collar and the auxiliary member for assisting the pressure hose against the nipple are integrated. explain. 22A is a side view showing a nipple 301 of a screw joint, and FIG. 22B is a side view showing a ring 302 in which a collar 306 of the screw joint is integrated.

  As shown in FIGS. 22A and 22B, the screw joint includes a nipple 301 and a ring 302.

  As shown in FIG. 22A, the nipple 301 has a cylindrical shape, and a tapered portion 303 is provided at one end thereof. A nipple screwing portion 304 is provided on the outer peripheral surface of the nipple 301 so that the outer peripheral surface of the nipple 301 and the inner peripheral surface of the ring 302 are screwed together. Further, as shown in FIG. 22B, a ring screwing portion 305 is provided on the inner peripheral surface of the ring 302.

  The screw joint and the soft hose are connected by passing the ring 302 through the soft hose in the direction opposite to the arrow shown in FIG. 22 (b), and the tapered portion 303 of the nipple 201 at the opening of the soft hose. Inserting is performed by moving the ring 302 in the direction of the arrow in the figure and screwing the ring screwing portion 305 with the nipple screwing portion 304 of the nipple 301. As a result, the collar 306 provided in the ring 302 presses the soft hose against the outer peripheral surface of the nipple 301.

In addition, the joint for hard hoses used in order to connect a pipe | tube and a hard hose is described in patent document 1. FIG. Patent Document 1 describes a configuration in which a hard hose and a joint are connected by a diameter reducing action of a split ring.
Special Table 2001-521116 (publication date November 6, 2001)

  When the pipe and the soft hose are connected using the one-touch nipple, the soft hose can be pressed by the collar 202 at the rubber portion 203 of the nipple 201 when the diameter of the soft hose to be used is small. However, when the diameter of the soft hose to be used is large, it is difficult to press the soft hose with the collar 202 in the rubber part 203 of the nipple 201 in the one-touch nipple having a size matching the diameter.

  In the one-touch nipple, water is introduced into the soft hose, and the collar 202 presses the soft hose at the rubber portion 203 of the nipple 201 by the water pressure. Therefore, for a while after water is introduced into the soft hose, the collar 202 cannot press the soft hose against the rubber portion 203 of the nipple 201. As a result, a gap is generated between the soft hose and the nipple 201, and water leakage occurs. When the diameter of the soft hose is small, the amount of water leakage is small, but when the diameter of the soft hose is large, a large amount of water leaks from the gap between the soft hose and the nipple 201.

  Further, since the soft hose is in pressure contact with the rubber part 203 of the nipple 201 only by the collar 202, the soft hose is pulled out of the nipple 201 when the water pressure introduced into the soft hose becomes higher than a predetermined value.

  Even when the pipe and the soft hose are connected using a screw joint, if the soft hose has a small diameter, the soft hose can be pressed against the outer peripheral surface of the tapered portion 303 of the nipple 301 by the ring 302. . However, when the diameter of the soft hose is large, the friction between the ring 302 integrated with the collar 306 and the soft hose is increased in the screw joint adapted to the diameter. Therefore, it is difficult to fasten the ring 302 to the nipple 301. Further, when the ring 302 integrated with the collar 306 is screwed into the nipple 301, the ring 302 rotates with respect to the soft hose, so that the soft hose is wrinkled and water leaks from the gap.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a soft hose joint that can easily connect a soft hose to a pipe by hand tightening and suppress water leakage. .

  In order to solve the above problems, the soft hose joint of the present invention is a soft hose joint for connecting a soft hose and a pipe. One end is connected to the pipe and the other end is inserted into the opening of the soft hose. A support tube having a tapered portion, an auxiliary member screwed into a support tube screwing portion provided on the outer peripheral surface on the tube side of the taper portion in the support tube, and an inner peripheral convex portion on the inner peripheral surface; When the taper portion of the support tube is inserted into the soft hose, the support tube is loosely fitted to the outer periphery of the distal end of the soft hose and is rotatably provided independently of the auxiliary member. It is characterized by comprising a pressing member that moves forward by coming into contact with the inner peripheral convex portion of the auxiliary member in accordance with the screwing to the screwing portion.

  With the above configuration, one end of the support tube is connected to the pipe, and the tapered portion at the other end is inserted into the opening of the soft hose. Then, the auxiliary member is screwed into a support tube screwed portion provided on the outer peripheral surface on the tube side with respect to the tapered portion of the support tube, so that the holding member loosely fitted on the outer periphery of the distal end of the soft hose On the other hand, an inner peripheral convex portion provided on the inner peripheral surface of the auxiliary member abuts, and the soft hose is pressed against the tapered portion of the support tube.

  In addition, since the pressing member is provided so as to be movable back and forth independently of the auxiliary member, the pressing member does not rotate when the auxiliary member is screwed into the support tube screwing portion of the support tube. Therefore, the friction generated between the soft hose and the pressing member does not affect the screwing of the auxiliary member to the outer peripheral surface of the support tube. As a result, even when the diameter of the soft hose is large, the auxiliary member can be easily screwed into the support tube screw portion of the support tube easily by hand tightening. And since a soft hose can fully be press-contacted with the outer peripheral surface of the said taper part of the said support pipe by the said pressing member, it suppresses that a water leak arises between a soft hose and the said support pipe. be able to.

  In the soft hose joint of the present invention, the pressing member and the auxiliary member may be separated from each other.

  By the said structure, a soft hose can be previously press-contacted with the outer peripheral surface of the said support pipe with the said pressing member. In this way, by previously pressing the soft hose against the outer peripheral surface of the support tube, it is possible to prevent the auxiliary member from being screwed into the support tube while the soft hose is wrinkled. Therefore, in the said structure, the wrinkle which arises in the opening part of a soft hose can be suppressed, and the water leak from between the said support pipe and a soft hose can be suppressed.

  The soft hose joint of the present invention may further include a pulling member for pulling out the pressing member together with the auxiliary member when the auxiliary member is pulled out from the support tube.

  With the above configuration, when the auxiliary member is removed from the support tube, the pressing member and the auxiliary member are removed together. Therefore, the pressing member can be easily removed from the support tube.

  In the soft hose joint of the present invention, the pressing member has a pressing member screwing portion on an outer peripheral surface on the soft hose side, and the pulling member is located on the soft hose side from the auxiliary member. The member has an outer diameter larger than the inner diameter of the inner peripheral convex portion, and has an extraction member screwing portion screwed into the pressing member screwing portion on the inner peripheral surface, and the pressing member screwing portion and the The extraction member screwing portion may be reversely wound with respect to the support tube screwing portion.

  With the above configuration, the inner side of the auxiliary member is screwed together with the pulling member having an outer diameter larger than the inner diameter of the inner circumferential convex portion of the auxiliary member on the soft hose side than the auxiliary member. The circumferential convex portion is sandwiched between the pressing member and the punching member. Therefore, when the auxiliary member is removed from the support tube, the pressing member and the auxiliary member can be removed together. Further, by making the extraction member screwing portion provided in the extraction member a spiral in a direction opposite to the support tube screwing portion provided in the support tube, the holding member is rotated along with the rotation of the auxiliary member. Even if the extraction member screwed to the member rotates, the pressing member and the extraction member can be prevented from being detached.

  In the soft hose joint according to the present invention, the pull-out member is formed to extend from the end portion of the pressing member to the soft hose side, and hooks to the outer end portion of the auxiliary member on the soft hose side. You may provide the hook part.

  With the above configuration, when the auxiliary member is removed from the support tube, the inner peripheral convex portion provided on the inner periphery of the auxiliary member and the hooking portion of the extraction member provided on the end portion of the pressing member, Engage. Therefore, by pulling out the auxiliary member, the pressing member is pulled out together with the auxiliary member. That is, by providing the hook portion at the end of the pressing member, it is not necessary to provide the pulling member as a separate member, and the pressing member can be easily removed from the support tube.

  In the soft hose joint of the present invention, the support tube may include at least two convex portions formed along an outer periphery of the support tube in the tapered portion.

  With the above configuration, the friction between the soft hose and the tapered portion of the support tube can be increased, and the soft hose is difficult to come off from the support tube. Therefore, when water is introduced into the soft hose, the soft hose can be prevented from being pulled out of the support tube and causing water leakage.

  In the soft hose joint of the present invention, the pressing member has a cylindrical shape, and the inner peripheral surface of the pressing member is in contact with the soft hose to press the soft hose against the tapered portion of the support pipe. The contact inner peripheral surface may be divided into a non-contact inner peripheral surface that does not contact the soft hose, and the diameter of the non-contact inner peripheral surface may increase toward the end of the pressing member.

  With the above configuration, when the pressing member is removed from the support tube, the inner peripheral surface other than the contact inner peripheral surface of the pressing member and the soft hose do not come into contact with each other. The friction can be reduced, and the pressing member can be easily detached from the support tube.

  Further, when the pressing member is attached to the support tube, when the soft hose is pressed against the outer peripheral surface of the support tube in advance by the pressing member, the inner surface of the pressing member is contacted with the non-contact inner periphery. By providing the surface, it is possible to suppress the narrowing of the soft hose other than the portion necessary for the pressure contact. Therefore, wrinkles are unlikely to occur at the opening of the soft hose, and water leakage from between the support tube and the soft hose can be suppressed.

  In the soft hose joint of the present invention, the pressing member has a cylindrical shape, and the inner peripheral surface of the pressing member is in contact with the soft hose to press the soft hose against the tapered portion of the support pipe. A first contact inner peripheral surface, the first contact inner peripheral surface has substantially the same inclination as the tapered portion of the support tube, and is provided with one or more convex portions, the diameter of which is You may become so large that it goes to the edge part of the said pressing member.

  With the above configuration, since the first contact inner peripheral surface has substantially the same inclination as the tapered portion of the support tube, the soft hose and the tapered portion can be more closely contacted by the pressing member. . In addition, since one or more convex portions are provided on the first contact inner peripheral surface, friction between the soft hose and the first contact inner peripheral surface of the pressing member can be increased, and the soft hose When water is introduced and water pressure is applied, the soft hose is unlikely to come out of the support tube. Therefore, it can suppress that a water leak arises between a soft hose and the said support pipe.

  In the soft hose joint of the present invention, the auxiliary member may be provided with a tool hole for turning the auxiliary member with a tool.

  With the above configuration, when the auxiliary member is screwed onto the support tube by hand tightening, if the auxiliary member cannot be sufficiently tightened, for example, a tool such as a screwdriver is inserted into the tool hole and the auxiliary member is inserted into the support tube. It can be tightened to the outer peripheral surface of the support tube.

  In the soft hose joint according to the present invention, the pressing member may be in contact with the soft hose so as to press the soft hose to the tapered portion of the support pipe closer to the tube than the first contact inner peripheral surface. A contact inner peripheral surface is provided, and the diameter of the second contact inner peripheral surface increases toward the tube side end of the pressing member, and is smaller than the taper of the first contact inner peripheral surface. You may have a taper.

  With the above configuration, the inner peripheral surface of the pressing member has a smaller taper on the second contact inner peripheral surface provided on the tube side than the first contact inner peripheral surface. Compared with the case where only the first contact inner peripheral surface is configured, the pressing member moves the soft hose to the outer peripheral surface of the tapered portion by moving the pressing member in the direction of increasing the diameter of the tapered portion. It is possible to press more strongly against.

  In the soft hose joint of the present invention, the auxiliary member includes a protruding edge portion that protrudes along the circumference on the inner peripheral surface of the end portion on the soft hose side, and the pull-out member includes the pressing member. A protruding convex portion protruding from the outer peripheral surface of the auxiliary member toward the outer peripheral surface of the auxiliary member from the inner peripheral surface of the protruding edge at the end of the member on the soft hose side; The protruding edge may be provided with an extraction recess through which the extraction protrusion passes.

  With the above configuration, when the auxiliary member is removed from the support tube, the protruding edge portion protruding along the circumference on the inner peripheral surface of the end portion on the soft hose side of the auxiliary member, and the pressing member The pressing member can be pulled out of the supporting tube together with the auxiliary member because the pulling protrusion, which is the pulling member provided at the end, is engaged. That is, by providing the removal convex portion at the end of the pressing member, the pressing member can be easily removed from the support tube.

  Further, in order to use the removal projection as the removal member, the removal projection needs to be provided closer to the soft hose than the outer end of the auxiliary member on the soft hose side. However, the pressing member is provided on the tube side of the auxiliary member, and the removal convex portion is formed on the protruding edge portion from the outer peripheral surface of the pressing member to the outer peripheral surface direction of the auxiliary member. Since the protrusion is more protruded from the inner peripheral surface, the protrusion for removal is protruded from the outer end of the auxiliary member on the soft hose side than the outer end of the auxiliary member. It must pass through the edge. Therefore, in the present invention, by providing the removal concave portion through which the removal convex portion passes at the protruding edge portion of the auxiliary member, the removal convex portion is arranged on the soft hose side of the auxiliary member. It becomes possible to arrange | position on the soft hose side rather than an outer side edge part.

  Further, in the soft hose joint of the present invention, the removal convex portion and the removal concave portion rotate the auxiliary member while engaging the protruding edge portion and the removal convex portion. Further, chamfering may be performed at a position where the removal convex portion and the removal concave portion are in contact with each other.

  In order to remove the auxiliary member from the support tube, when the auxiliary member is rotated while engaging the protruding edge and the removal convex portion, with the rotation of the auxiliary member, When the positions of the removal convex portion and the removal concave portion coincide with each other, the removal convex portion and the removal concave portion come into contact with each other. At this time, if there is a corner in the contact position between the removal protrusion and the removal recess, the removal protrusion and the removal recess are caught at the contact position, and the auxiliary member rotates. Is disturbed. Accordingly, by chamfering the contact position between the removal protrusion and the removal recess according to the above configuration of the present invention, the removal protrusion and the removal recess are hooked at the contact position. The auxiliary member can be smoothly rotated.

  The soft hose joint according to the present invention is a soft hose joint for connecting a soft hose and a pipe. One end of the joint is connected to the pipe, and the other end is a support pipe made of a tapered portion inserted into the opening of the soft hose. And the support member by screwing with the outer peripheral surface of the support tube and the pressing member that presses the soft hose against the outer peripheral surface of the tapered portion by moving in the direction of increasing the diameter of the tapered portion. An auxiliary member that moves to the tube side of the tube and moves the pressing member in the direction of increasing the diameter of the tapered portion along with the movement, and assists pressure contact with the outer peripheral surface of the tapered portion of the support tube, The pressing member is characterized by being rotatable with respect to the auxiliary member.

  With the above configuration, one end of the support tube is joined to the tube, and the tapered portion at the other end is inserted into the opening of the soft hose. And the said pressing member can press-contact the said soft hose with respect to the outer peripheral surface of the said taper part by moving the said pressing member to the expansion direction of the diameter of the said taper part. Furthermore, the auxiliary member is moved to the tube side of the support tube by screwing the auxiliary member with the outer peripheral surface of the support tube. And the said auxiliary member moves the said pressing member to the expansion direction of the diameter of the said taper part, and assists the press-contact of the said pressing member. Thereby, a soft hose can fully be press-contacted with respect to the outer peripheral surface of the taper part of the said support pipe.

  Moreover, since the said pressing member is provided rotatably with respect to the said auxiliary member, when the said auxiliary member is screwed together with the outer peripheral surface of the said support pipe, the said pressing member does not rotate. Therefore, the friction generated between the soft hose and the pressing member does not affect the screwing of the auxiliary member to the outer peripheral surface of the support tube. As a result, even when the diameter of the soft hose is large, the auxiliary member can be easily screwed to the outer peripheral surface of the support tube by hand tightening. And since a soft hose can fully be press-contacted with respect to the outer peripheral surface of the said support pipe by the said pressing member, it can suppress that a water leak arises between a soft hose and the said support pipe.

  As described above, the joint for a soft hose of the present invention has a support tube having one end connected to a tube and the other end inserted into the opening of the soft hose, and a tube than the taper portion in the support tube. An auxiliary member having an inner peripheral convex portion on the inner peripheral surface and a taper portion of the support tube inserted into the soft hose. The auxiliary member is loosely fitted to the outer periphery of the tip and is provided so as to be rotatable independently of the auxiliary member. The auxiliary member is abutted against the inner peripheral convex portion of the auxiliary member when the auxiliary member is screwed to the support tube screwing portion. It is characterized by comprising a pressing member that moves forward by contact.

  With the above configuration, since the pressing member is rotatably provided with respect to the auxiliary member, the pressing member does not rotate when the auxiliary member is screwed to the outer peripheral surface of the support tube. Therefore, the friction generated between the soft hose and the pressing member does not affect the screwing of the auxiliary member to the outer peripheral surface of the support tube. As a result, even when the diameter of the soft hose is large, the auxiliary member can be easily screwed to the outer peripheral surface of the support tube by hand tightening. And since the soft hose can be sufficiently brought into pressure contact with the outer peripheral surface of the tapered portion of the support pipe by the pressing member, it is possible to suppress the occurrence of water leakage between the soft hose and the support pipe. Can do. As a result, it is possible to easily connect the soft hose to the pipe by hand tightening and to provide an effect of providing a joint for soft hose that suppresses water leakage.

  The embodiment of the present invention will be described with reference to FIGS. 1 to 19 and FIGS. 23 to 34 as follows.

  The soft hose joint of the present invention is one in which one end is connected to a pipe and the other end is pressed against the outer peripheral surface of a support tube inserted into the opening of the soft hose by a pressing member and an auxiliary member. is there.

[First Embodiment]
The structure of the joint for soft hoses which concerns on 1st Embodiment of this invention is demonstrated in detail with reference to FIGS. FIG. 1 is a perspective view showing a schematic configuration of a soft hose joint 1 of the present embodiment.

  As shown in FIG. 1, the soft hose joint 1 includes a nipple (support pipe) 2, a collar (pressing member) 3, a ring (auxiliary member) 4, and a collar nut (extraction member) 5.

  The soft hose joint 1 of the present embodiment is suitably used for connecting a pipe and a soft hose in piping for use in irrigation work at an agricultural production site, drainage work at a civil engineering work site, or the like. In addition, in this embodiment, the pipe joint used for piping, the water pipe for sending water, etc. are used as a pipe | tube.

  The nipple 2 is for indirectly connecting the pipe and the soft hose, and has a cylindrical shape as shown in FIGS. 2 (a) and 2 (b). 2A is a side view of the nipple 2 of the soft hose joint 1, and FIG. 2B is a front view of FIG. 2A viewed from the direction of the arrow. As shown in FIG. 2A, the outer peripheral surface of the nipple 2 is divided into three parts. That is, on the outer peripheral surface of the nipple 2, a tube connecting portion 6, a ring screw 8 (support tube screwing portion), and a tapered portion 7 are provided in this order from one end of the nipple 2.

  The pipe connection part 6 is a part that joins the pipe when the nipple 2 is joined to the pipe. The taper part 7 is a part to be inserted into the opening of the soft hose, the diameter decreases toward the end, and has a taper of 2.5 / 100 to 12.5 / 100. As a result, the soft hose can be brought into closer contact with the tapered portion 7. Further, at least two convex portions formed along the outer periphery of the tapered portion 7 are provided. Thereby, friction with a soft hose and the taper part 7 can be enlarged, and it is possible to make it difficult to remove a soft hose from the nipple 2. The ring screw 8 is a part for screwing with the ring 4 and has a male screw structure.

  In addition, as a material which comprises the nipple 2, when producing the nipple 2 by injection molding, resin which can be injection-molded is used. However, when the nipple 2 is bonded to a vinyl chloride pipe made of vinyl chloride, it is preferable that PVC or ABS resin is used as the material constituting the nipple 2. In the present invention, the tapered portion 7 may have a configuration in which no convex portion is provided, but it is preferable that at least two or more convex portions are provided as in the present embodiment.

  The collar 3 is for pressing the soft hose against the outer peripheral surface of the tapered portion 7 of the nipple 2. FIG. 3A is a side view of the collar 3 of the soft hose joint 1, and FIG. 3B is a front view of FIG. 3A viewed from the direction of the arrow.

  The collar 3 has a cylindrical shape as shown in FIGS. 3 (a) and 3 (b). A collar convex portion 12, which is a convex portion along the outer periphery, is provided on the outer peripheral surface of one end of the collar 3 in order to engage with the ring 4. A nut screw 11 (pressing member screwing portion) for screwing with the collar nut 5 is provided on the outer peripheral surface of the other end of the collar 3. The inner peripheral surface of the collar 3 is divided into a contact inner peripheral surface 9 that comes into contact with the soft hose in order to press the soft hose against the tapered portion 7 of the nipple 2 and a non-contact inner peripheral surface 10 that does not come into contact with the soft hose. It has been. The diameters of the contact inner peripheral surface 9 and the non-contact inner peripheral surface 10 are gradually increased toward the end of the collar 3.

  As shown in FIG. 4, the contact inner peripheral surface 9 has a taper of 2.5 / 100 to 12.5 / 100 which is substantially the same as the taper portion 7 of the nipple 2, and has a stepped shape having one or more steps. It has become. With such a configuration, the contact inner peripheral surface 9 can bring the soft hose into close contact with the tapered portion 7 of the nipple 2. Therefore, it is possible to suppress water leakage from between the soft hose and the nipple 2. Further, the friction between the soft hose and the collar 3 can be increased, and when the water pressure is applied to the soft hose and the water pressure is applied, the soft hose is difficult to come off from the nipple 2.

  In the present embodiment, the contact inner peripheral surface 9 has a stepped shape, but the present invention is not limited to this. As shown in FIG. 5, the contact inner peripheral surface 9 may have a sawtooth shape. By making the contact inner peripheral surface 9 into a saw-tooth shape, the friction between the soft hose and the collar 3 can be further increased. Therefore, even when water is introduced into the soft hose and a larger water pressure is applied, the soft hose is difficult to come out of the nipple 2.

  In the present embodiment, the step shape means that the bending angle of each step is about 90 degrees, and the sawtooth shape means that the bending angle of each step is an acute angle.

  Moreover, the non-contact inner peripheral surface 10 should just be a structure which does not contact a soft hose. Thereby, when the collar 3 is removed from the nipple 2, the non-contact inner peripheral surface 10 of the collar 3 does not come into contact with the soft hose, so that the friction between the collar 3 and the soft hose can be reduced. 3 can be easily removed from the nipple 2. Further, when the collar 3 is attached to the nipple 2, the non-contact inner peripheral surface 10 is provided on the inner peripheral surface of the collar 3 when the collar 3 presses the soft hose against the tapered portion 7 of the nipple 2 in advance. Therefore, it is possible to suppress the narrowing of the soft hose other than the portion necessary for the pressure contact. Therefore, wrinkles are unlikely to occur at the opening of the soft hose, and water leakage from between the nipple 2 and the soft hose can be suppressed.

  The ring 4 is moved to the tube side of the nipple 2 by screwing with the ring screw 8 of the nipple 2, and the collar 3 is pressed against the tapered portion 7 of the nipple 2 along with the movement. FIG. 6A is a side view of the ring 4 of the soft hose joint 1, and FIG. 6B is a front view of FIG. 6A viewed from the direction of the arrow. In the present embodiment, the tube side is the tube connecting portion 6 side with respect to the tapered portion 7 of the nipple 2, and the soft hose side is the opposite side to the tube side.

  As shown in FIGS. 6 (a) and 6 (b), the ring 4 has a cylindrical shape, and its outer peripheral surface is formed in a dodecagon. Thus, the friction between the outer peripheral surface of the ring 4 and the hand can be increased by making the outer peripheral surface of the ring 4 polygonal. Therefore, when the ring 4 is screwed into the nipple 2, it can be easily tightened by hand. In the present embodiment, the outer peripheral surface of the ring 4 is a dodecagon, but the present invention is not limited to this. The outer peripheral surface of the ring 4 may be polygonal so that it can be easily screwed by hand tightening or may not be provided.

  On the inner peripheral surface of the ring 4, the inner peripheral surface along the end of one end of the ring 4 is engaged with the collar convex portion 12 provided on the outer peripheral surface of the collar 3. The ring convex part 14 (inner peripheral convex part, protrusion edge part) which is a part is provided. And the nipple screw 13 for screwing with the ring screw 8 of the nipple 2 is provided in the inner peripheral surface of the ring 4 other than the ring convex part 14, and it has a female screw structure.

  In the present embodiment, the ring protrusion 14 is provided along one end of the ring 4, specifically, the end on the soft hose side, but the present invention is not limited to this, and the ring 4 You may be provided in the pipe | tube side rather than the edge part by the side of a soft hose. In addition, the ring convex portion 14 is provided along the inner periphery of the ring 4, but may be configured to partially protrude, and is engaged with the collar convex portion 12 provided on the outer peripheral surface of the collar 3. Any configuration can be used.

  Further, a tool hole 15 for screwing the ring 4 into the nipple 2 by inserting a tool or the like and turning the tool is provided on the outer peripheral surface of the ring 4. Thus, when the ring 4 cannot be sufficiently screwed to the nipple 2 by hand tightening, a screwdriver (plus screwdriver) or the like can be inserted into the tool hole 15 and tightened. In the present invention, the tool hole 15 may not be provided.

  The collar nut 5 is for easily separating the collar 3 pressed against the tapered portion 7 of the nipple 2 by the ring 4 from the tapered portion 7. FIG. 7A is a side view of the collar nut 5 of the soft hose joint 1, and FIG. 7B is a front view of FIG. 7A viewed from the direction of the arrow.

  As shown in FIG. 7A and FIG. 7B, the collar nut 5 has a cylindrical shape. The outer diameter of the collar nut 5 is larger than the inner diameter of the ring convex portion 14 of the ring 4. On the inner peripheral surface of the collar nut 5, nut convex portions 17 for engaging with the collar 3 are provided along the inner periphery on the inner peripheral surface along one end of the collar nut 5. . Further, on the inner peripheral surface of the collar nut 5 other than the nut convex portion 17, a collar screw 16 (extraction member screwing portion) for screwing with the nut screw 11 provided on the outer peripheral portion of the collar 3 is provided. Is provided. The screw structure of the collar screw 16 is configured in the opposite direction to the screw structure of the nipple screw 13 provided on the inner peripheral surface of the ring 4. Thereby, when the ring 4 is detached from the nipple 2, the collar nut 5 is not loosened.

  The collar 3 and the collar nut 5 are configured not to rotate together when the ring 4 is screwed into the nipple 2. Therefore, when the ring 4 is screwed into the nipple 2, the collar 3 does not rotate, and the friction generated between the soft hose and the collar 3 is reduced. Thereby, the ring 4 can be easily screwed with the nipple 2 by hand tightening.

  In the present embodiment, the collar 3 and the ring 4 are separated from each other. However, the present invention is not limited to this, and any configuration is possible as long as the collar 3 and the ring 4 are independently movable.

  Next, a method for connecting a soft hose using the soft hose joint 1 of the present embodiment will be described with reference to FIGS. FIGS. 8A to 8C are side views showing a soft hose connection method using the soft hose joint.

  First, as shown in FIG. 8A, the collar nut 5, the ring 4, and the collar 3 are passed in this order from one end of the soft hose. The collar nut 5 is passed through the soft hose from the side where the nut protrusion 17 is provided on the inner peripheral surface. The ring 4 is passed through the soft hose from the side where the ring convex portion 14 is provided on the inner peripheral surface. The collar 3 is passed through the soft hose from the side where the nut screw 11 is provided on the outer peripheral surface.

  Then, the tapered portion 7 of the nipple 2 is inserted into the opening portion of the soft hose through the collar nut 5, the ring 4 and the collar 3. Then, the collar 3 is brought into pressure contact with the tapered portion 7 of the nipple 2 by hand tightening as much as possible. At this time, wrinkles are not generated near the opening of the soft hose. In this way, the collar 3 can temporarily prevent the soft hose from wrinkling by temporarily fixing the soft hose to the tapered portion 7 of the nipple 2. Therefore, it can suppress that the water introduce | transduced into the soft hose leaks from the wrinkle which a soft hose produced.

  After confirming that the soft hose is not wrinkled by temporarily fixing with the collar 3, the ring 4 is moved in the direction of the nipple 2 as shown by the arrow in the figure, as shown in FIG. 8 (b). Let Then, the nipple screw 13 provided on the inner peripheral surface of the ring 4 and the ring screw 8 of the nipple 2 are screwed together by hand tightening.

  By sufficiently screwing the nipple screw 13 and the ring screw 8, the ring convex portion 14 of the ring 4 is engaged with the collar convex portion 12 of the collar 3, as shown in FIG. The collar 3 is further moved in the direction of increasing the diameter of the tapered portion 7. As a result, the collar 3 presses the soft hose more strongly against the outer peripheral surface of the tapered portion 7. Then, the collar screw 16 of the collar nut 5 and the nut screw 11 of the collar 3 are screwed together.

  As described above, in the connection between the tube and the soft hose, by using the soft hose joint 1 of the present embodiment, the soft hose can be connected by hand tightening without causing wrinkles in the connection. .

  Next, in the case where the soft hose is pulled out from the soft hose joint 1 of the present embodiment, the difference in the separation state caused by whether or not the collar nut 5 is used will be described with reference to FIGS. 9 and 10. FIG. 9 is a side view showing removal of the soft hose joint 1 when the collar 3 and the collar nut 5 are screwed together. FIG. 10 is a side view showing removal of the soft hose joint 1 when the collar 3 and the collar nut 5 are not screwed together.

  When the collar 3 and the collar nut 5 are screwed together, the ring 4 is sandwiched between the collar protrusion 12 of the collar 3 and the nut protrusion 17 of the collar nut 5. The ring 4 is held by a collar 3 and a collar nut 5 in a rotatable state.

  Therefore, when the ring 4 is removed from the nipple 2, the collar 3 and the collar nut 5 are separated from the nipple 2 together with the ring 4 as shown in FIG. 9. At this time, since the collar screw 16 provided on the inner peripheral surface of the collar nut 5 is provided in the opposite direction to the nipple screw 13 of the ring 4, the collar 3 and the collar nut 5 are screwed together. The clothes never loosen.

  Further, when the collar 3 and the collar nut 5 are not screwed together, when the ring 4 is removed from the nipple 2, the collar 3 is fitted to the tapered portion 7 of the nipple 2 as shown in FIG. In this state, only the ring 4 is pulled out. Since the collar 3 is strongly pressed into the tapered portion 7 by the ring 4, it cannot be separated unless a tool is used.

  Thus, the collar nut 5 is not involved in joining the soft hose and the pipe. However, by providing the collar nut 5, when the ring 4 is pulled out of the nipple 2, it is possible to prevent the collar 3 from being separated without being strongly fitted to the tapered portion 7 of the nipple 2.

  As described above, the soft hose joint 1 of the present embodiment has a nipple 2 including one end connected to the pipe and the other end inserted into the opening of the soft hose, and the diameter of the tapered portion 7. By moving in the enlargement direction, the collar 3 that presses the soft hose against the outer peripheral surface of the tapered portion 7 and the outer peripheral surface of the nipple 2 are screwed to move to the tube side of the nipple 2, and the movement Accordingly, the collar 3 is moved in the direction in which the diameter of the tapered portion 7 is enlarged, and a ring 4 is provided to assist the pressure contact with the outer peripheral surface of the tapered portion 7 of the nipple 2. It is characterized by being free.

  With the above configuration, when the ring 4 is screwed onto the outer peripheral surface of the nipple 2, the collar 3 does not rotate together. Therefore, the friction generated between the soft hose and the collar 3 does not affect the screwing of the ring 4 to the outer peripheral surface of the nipple 2. As a result, even when the diameter of the soft hose is large, the ring 4 can be easily screwed onto the outer peripheral surface of the nipple 2 by hand tightening. And since a soft hose can fully be press-contacted with the taper part 7 of the nipple 2 with the collar 3, it can suppress that a water leak arises between a soft hose and the nipple 2. FIG.

  In addition, the joint 1 for soft hoses of this embodiment can be used suitably, for example in the soft hose connected and utilized for piping and joints whose nominal diameter is 40A or more in JIS specification.

[Second Embodiment]
Next, the joint 21 for soft hoses of 2nd Embodiment of this invention is demonstrated. FIG. 11 is a perspective view showing the soft hose joint 21 according to the second embodiment. Moreover, the same code | symbol is attached about the component in the coupling 1 for soft hoses of 1st Embodiment, and the component which has an equivalent function.

  As shown in FIG. 11, the soft hose joint 21 includes a nipple 2, a collar 23, and a ring 4.

  A configuration in which the soft hose joint 21 is different from the soft hose joint 1 of the first embodiment will be described. In the soft hose joint 21, the hook portion 24 is provided in the collar 23, and the collar nut 5 used in the soft hose joint 1 of the first embodiment is omitted.

  The collar 23 is for pressing the soft hose against the outer peripheral surface of the tapered portion 7 of the nipple 2. The hook portion 24 is for easily separating the collar 23 pressed against the tapered portion 7 of the nipple 2 by the ring 4 from the tapered portion 7. FIG. 12 is a perspective view showing the collar 23 of the soft hose joint 21 according to the second embodiment.

  As shown in FIG. 12, the collar 23 has a cylindrical shape, and is provided with a collar convex portion 25 for engaging with the ring 4 on the outer peripheral surface of one end and the outer periphery of the collar 23 on the other end. In parallel, two hook portions 24 are provided which protrude from the end of the collar 23 toward the soft hose. In the present embodiment, two hooking portions 24 are provided, but the present invention is not limited to this. That is, the ring 4 and the collar 23 may be removed together when the ring 4 is removed from the nipple 2.

  Here, a soft hose connection method using the soft hose joint 21 of the present embodiment will be described with reference to FIG. FIGS. 13A to 13C are side views showing a soft hose connection method using the soft hose joint 21. In addition, specific description is abbreviate | omitted about the part same as the connection method of the soft hose using the joint 1 for soft hoses of 1st Embodiment.

  First, as shown in FIG. 13A, the ring 4 and the collar 23 are passed in this order from one end of the soft hose. The ring 4 is passed through the soft hose from the side where the ring convex portion 14 is provided on the inner peripheral surface. The collar 23 is passed through the soft hose from the side where the hooking portion 24 is provided.

  And the taper part 7 of the nipple 2 is inserted in the opening part of the soft hose of the side which let the ring 4 and the collar 23 pass. Then, the collar 3 is brought into pressure contact with the tapered portion 7 of the nipple 2 by hand tightening as much as possible. At this time, wrinkles are not generated near the opening of the soft hose.

  Then, after confirming that the soft hose is not wrinkled by the collar 3, as shown in FIG. 13B, the ring 4 is moved in the direction of the nipple 2 as shown by an arrow in the figure. Then, the nipple screw 13 provided on the inner peripheral surface of the ring 4 and the ring screw 8 of the nipple 2 are screwed together by hand tightening. When the ring 4 and the nipple 2 are screwed together, the hook portion 24 of the collar 23 comes into contact with the ring convex portion 14 provided on the inner peripheral surface of the ring 4, but the ring 4 is continuously screwed into the nipple 2. As a result, the hook portion 24 is reduced in diameter.

  Then, as shown in FIG. 13 (c), the ring protrusion 14 of the ring 4 is made to protrude from the collar 23 by sufficiently screwing the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 together. The collar 23 is engaged with the portion 25 to further move in the direction of increasing the diameter of the tapered portion 7. As a result, the collar 23 presses the soft hose more strongly against the outer peripheral surface of the tapered portion 7.

  Next, a method for separating the soft hose from the soft hose joint 21 of the present embodiment will be described with reference to FIG. FIGS. 14A to 14C are side views showing a soft hose separation method using the soft hose joint.

  FIG. 14A shows a state in which the ring 4 and the nipple 2 are screwed together. And as shown in FIG.14 (b), the ring convex part 14 of the ring 4 and the catch part 24 of the collar 23 engage by moving the ring 4 in the direction which pulls out from the nipple 2. FIG. Then, as shown in FIG. 14C, the collar 23 is engaged with the ring 4 by further removing the ring 4 from the nipple 2 while the ring convex portion 14 and the hooking portion 24 are engaged. Withdrawn from nipple 2

  Thus, by providing the hook portion 24 on the collar 23, the collar 23 can be easily detached from the nipple 2 together with the ring 4 without providing the collar nut 5 as a separate member in the first embodiment. . That is, the collar 23 has the functions of the collar 3 and the collar nut 5 in the soft hose joint 1 of the first embodiment.

[Third Embodiment]
Next, the soft hose joint 31 according to the third embodiment of the present invention will be described. Moreover, the same code | symbol is attached about the component in the coupling 1 for soft hoses of 1st Embodiment, and the component which has an equivalent function.

  First, a configuration in which the soft hose joint 31 is different from the soft hose joint 1 will be described with reference to FIGS. Fig.15 (a) is a side view which shows the nipple 32 of the joint 31 for soft hoses of 3rd Embodiment, FIG.15 (b) is the front view which looked at Fig.15 (a) from the direction of the arrow. 16A is a side view showing the collar 33 of the soft hose joint 31, and FIG. 16B is a front view of FIG. 16A viewed from the direction of the arrow. FIG. 17 is a view showing an example of the shape on the inner peripheral surface of the collar 33.

  The nipple 2 of the soft hose joint 1 is provided with at least two convex portions along the outer periphery in the tapered portion 7 inserted into the opening of the soft hose. However, in the soft hose joint 31, as shown in FIG. 15A, the tapered portion 37 of the nipple 32 is not provided with a convex portion. Further, the contact inner peripheral surface 9 of the collar 3 of the soft hose joint 1 is provided with a stepped or sawtooth-shaped step. However, in the soft hose joint 31, as shown in FIGS. 16A and 17, no step is provided on the contact inner peripheral surface 39 of the collar 33.

  In order to examine in which point the soft hose joint 31 is different from the soft hose joint 1 of the first embodiment and the conventional SP nipple and hose band, the soft hose joint is attached and detached using each joint. Comparison was made with respect to the time required, water leakage occurring between the soft hose and the nipple, and the connection state between each joint after the water was supplied and the soft hose.

  Hereinafter, the comparison result will be described in detail with reference to FIGS. 18 and 19. FIG. 18 shows the attachment / detachment time of the soft hose using the soft hose joint 1 of the first embodiment and the soft hose joint 31 of the third embodiment, and the attachment / detachment time of the soft hose using the conventional SP nipple and hose band. It is a figure for comparing with. FIG. 19 shows the water generated between the soft hose and the nipple of the soft hose joint 1 of the first embodiment and the soft hose joint 31 of the third embodiment and the soft hose using the conventional SP nipple and hose band. It is a figure for comparing the connection condition of each joint after a leak and water supply, and a soft hose.

  First, when using a conventional SP nipple (manufactured by Sumika Agricultural Materials Co., Ltd.) and a Jubilee Hose Clip (manufactured by L Robinson & Co.) as a hose band, the soft hose joint 1 of the first embodiment and the soft of the present embodiment The time required to attach and detach the soft hose is compared with the case where the hose joint 31 is used. As the soft hose, a sunny hose having a maximum working pressure of 0.5 MPa and a high sunny hose having a maximum working pressure of 0.7 MPa (Sunny Hose Co., ltd.) Are used. Here, the soft hose joint 1 and the soft hose joint 31 are connected to the soft hose manually. And the connection of the soft hose by the conventional SP nipple and a hose band is performed using tools, such as a driver.

  As a result of comparison of the time required for attaching and detaching the soft hose, as shown in FIG. 18, in the soft hose joint 1 and the soft hose joint 31, it takes about 2 minutes to connect the pipe to the sunny hose and the high sunny hose. is doing. Then, it takes about 30 seconds to pull out each hose.

  Further, in the case where the SP nipple and the hose band are used, it takes about 3 minutes to connect the pipe to the sunny hose and the high sunny hose. And it takes about 1 minute and 30 seconds to remove and extract each hose.

  As described above, the connection time and the removal time of the soft hose when the soft hose joint 1 and the soft hose joint 31 of the present invention are used are shorter than when the conventional SP nipple and the hose band are used. Has been.

  Next, in the case where the conventional SP nipple and the hose band are used, and in the case where the soft hose joint 1 of the first embodiment and the soft hose joint 31 of the present embodiment are used, 5 tap water is supplied to the soft hose. Water is supplied for 30 minutes, and the state of water leakage from the soft hose is compared with the connection state of the soft hose after water supply. The water supply pressure is 0.5 MPa for the sunny hose and 0.7 MPa for the high sunny hose.

  When the soft hose joint 1 of the first embodiment was used, as shown in FIG. 19, water leakage and hose removal were not observed in the sunny hose and the high sunny hose. However, when the soft hose joint 31 of the third embodiment was used, the sunny hose and the high sunny hose were removed. Moreover, in the case of using the conventional SP nipple and the hose band, when water was supplied using the sunny hose, the hose was not removed, but water leakage was observed. And when water was supplied using a high sunny hose, there was no removal of the hose, but a small amount of water leakage was observed.

  Thus, when the conventional SP nipple and hose band were used, the time required for attachment and detachment was long, and although the sunny hose and the high sunny hose were not removed, water leakage occurred in both cases. In comparison, the soft hose joint 1 has a shorter time required for attachment and detachment. Even when water is supplied at the maximum operating pressure of the sunny and high sunny hoses, each hose does not come out and does not leak. It was. And although the time required for attachment / detachment of the soft hose joint 31 was shortened, when water was supplied at the maximum operating pressure of the sunny hose and the high sunny hose, each hose was pulled out.

  However, if the soft hose joint 31 supplies water at a water pressure lower than the above-described water supply water pressure, the soft hose cannot be removed and no water leakage occurs. That is, the soft hose joint 1 is more preferable than the soft hose joint 31 because it can withstand a high water pressure. In either case, the conventional SP nipple and hose band are used. The detachment time can be shortened from the configuration, and water leakage can be suppressed by hand tightening.

[Fourth Embodiment]
Next, the joint 41 for soft hoses of 4th Embodiment of this invention is demonstrated with reference to FIGS. FIG. 23 is a cross-sectional view showing a schematic configuration of the soft hose joint 41 of the fourth embodiment. As shown in FIG. 23, the soft hose joint 41 according to the fourth embodiment includes a nipple 2, a collar 43, a ring 4, and a collar nut 5. That is, the soft hose joint 41 is the same as the soft hose joint 1 of the first embodiment except for the configuration of the collar 43. In the following description, the same code | symbol is attached | subjected about the component in the coupling 1 for soft hoses of 1st Embodiment, and the component which has an equivalent function.

  The configuration of the collar 43 of the present embodiment and the configuration of the collar 3 of the first embodiment will be compared with reference to FIGS. FIG. 24A is a side view showing the collar 3 of the soft hose joint 1 according to the first embodiment, and FIG. 24B is a cross-sectional view taken along the line AA ′ of FIG. It is sectional drawing. FIG. 25A is a side view showing the collar 43 of the soft hose joint 41 of the present embodiment, and FIG. 25B is a cross-sectional view of the AA ′ cross section of FIG. FIG.

  As shown in FIGS. 24 and 25, the collar 43 protrudes from the end on the side where the collar convex portion 42 corresponding to the collar convex portion 12 of the collar 3 of the first embodiment is provided to the tube side. A portion 44 is provided. As shown in FIG. 25 (b), the projecting inner peripheral surface 45, which is the inner peripheral surface of the projecting portion 44, is connected to the contact inner peripheral surface 9. The diameter gradually increases toward the end of the. Further, the contact inner peripheral surface 9 has a taper B, and the protruding inner peripheral surface 45 has a taper A. The relationship between the taper A and the taper B is 0 <taper A <taper B. Since the contact inner peripheral surface 9 has substantially the same taper as the taper portion 7 of the nipple 2 as described above, the taper B is in the range of 2.5 / 100 to 12.5 / 100. The taper A is preferably in the range of 3/100 to 7/100. Since the configuration of the collar 43 other than the protruding portion 44 is the same as that of the collar 3, the description thereof is omitted here.

  Here, in the case where the soft hose is connected using the soft hose joint 1 of the first embodiment and the soft hose joint 41 of the present embodiment, refer to FIGS. To consider. In the following description, since the diameter of the ring screw 8 of the nipple 2 is larger than the diameter of the tapered portion 7, a boundary surface generated between the ring screw 8 and the tapered portion 7 is defined as a boundary surface 46. 26 to 28, the ring 4 and the collar nut 5 are omitted in order to clarify the operation of the collar 3 or the collar 43. Since the soft hose connection process using the soft hose joint 41 of the present embodiment is the same as the soft hose connection process using the soft hose joint 1 of the first embodiment, the description thereof is omitted here. .

  First, in the case of connecting a soft hose using the soft hose joint 1 of the first embodiment and the soft hose joint 41 of the present embodiment, the steps of inserting the nipple 2 into the soft hose are shown in FIGS. This will be described with reference to c). As shown in FIGS. 26A and 26B, when the tapered portion 7 of the nipple 2 is inserted into the soft hose without resistance, the distance between the tube-side end of the soft hose and the boundary surface 46 is expressed as “ 26 (c), when the soft hose is manually pushed in the diameter increasing direction of the tapered portion 7 of the nipple 2, the end of the soft hose on the tube side and the boundary surface 46 The distance is “A2”. Although not shown here, the soft hose passes through the collar nut 5, the ring 4, and the collar 3 (collar 43) in this order.

  Next, in the case where the soft hose is connected using the soft hose joint 41, the process after the nipple 2 is inserted into the soft hose as described above will be described with reference to FIGS. 27 (a) and 27 (b). explain. As shown in FIG. 27 (a), the ring 4 is screwed onto the outer peripheral surface of the nipple 2 (by fitting the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 by screw action). The collar 43 is moved to the tube side of the tapered portion 7 of the nipple 2. By moving the collar 43 to the tube side of the tapered portion 7, the soft hose and the collar 43 are integrated and moved to the tube side of the tapered portion 7 as shown in FIG. The end of this contacts the boundary surface 46. Further, by moving the collar 43 to the tube side of the tapered portion 7, the soft hose is also moved to the tube side of the tapered portion 7, and is located between the end portion of the protruding portion 44 on the tube side and the boundary surface 46. Soft hose bends. When the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 are sufficiently screwed (when the ring 4 is tightened to the ring screw 8 of the nipple 2 with a predetermined torque), the collar 43 The distance from the tube side end of the collar convex portion 42 to the boundary surface 46 is “A3”, and the distance from the tube side end of the protrusion 44 to the boundary surface 46 is “A4”.

  Next, in the case where a soft hose is connected using the soft hose joint 1, the process after the nipple 2 is inserted into the soft hose as described above will be described with reference to FIG. As shown in FIG. 28, the collar 3 is moved to the tube side of the tapered portion 7 of the nipple 2 by screwing the ring 4 to the outer peripheral surface of the nipple 2. At this time, unlike the collar 43 of the soft hose joint 41, the collar 3 and the soft hose are integrated and do not move to the tube side of the tapered portion 7. The collar 3 slightly moves the soft hose toward the tube side of the tapered portion 7, but moves the soft hose against the tapered portion 7 by moving toward the tube side of the tapered portion 7 so as to slide on the surface of the soft hose. When the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 are sufficiently screwed, the distance from the tube side end of the collar 3 to the boundary surface 46 is “A3 ′”, and the soft hose The distance from the tube side end to the boundary surface 46 is “A5”.

  Here, in order to compare the performance of the soft hose joint 1 and the soft hose joint 41, the time required for attaching and detaching the soft hose was compared by the method shown in the third embodiment. As the soft hose, a sunny hose having a maximum working pressure of 0.5 MPa and a high sunny hose having a maximum working pressure of 0.7 MPa (Sunny Hose Co., ltd.) Are used. Here, the soft hose joint 1 and the soft hose joint 41 are connected to the soft hose manually.

  As a result of the comparison of the time required for attaching and detaching the soft hose, as shown in FIG. 18, in the soft hose joint 1, it takes about 2 minutes to connect the pipe to the sunny hose and the high sunny hose. Then, it takes about 30 seconds to pull out each hose. Since the soft hose joint 1 and the soft hose joint 41 have the same number of constituent members, the time required to attach and detach the soft hose in the soft hose joint 41 is substantially the same.

  Furthermore, in order to compare the performances of the soft hose joint 1 and the soft hose joint 41, the soft hose is used in the case where the soft hose joint 1 and the soft hose joint 41 are used by the method shown in the third embodiment. Tap water is supplied 5 times x 30 times, and the state of water leakage from the soft hose and the connection state of the soft hose after water supply are compared. The water supply pressure is 0.5 MPa for the sunny hose and 0.7 MPa for the high sunny hose.

  When the soft hose joint 1 was used, as shown in FIG. 19, in the sunny hose and the high sunny hose, water leakage and hose removal were not observed. Further, even when the soft hose joint 41 was used, as in the soft hose joint 1, no water leakage and no hose removal were observed in the sunny hose and the high sunny hose. However, in the soft hose joint 1, “A5” shown in FIG. 28 is slightly displaced (about 1 mm), whereas in the soft hose joint 41, “A4” shown in FIG. There was no displacement at all. That is, the soft hose joint 41 presses the soft hose more strongly against the tapered portion 7 of the nipple 2 than the soft hose joint 1, and suppresses the occurrence of water leakage between the soft hose and the nipple 2. It is considered possible.

  Here, a configuration in which the soft hose joint 41 presses the soft hose to the tapered portion 7 of the nipple 2 more strongly than the soft hose joint 1 will be examined. In the process of inserting the nipple 2 into the soft hose as described above, “A1” and “A2” are substantially the same regardless of which of the soft hose joint 1 and the soft hose joint 41 is used. Further, when the soft hose is connected using the soft hose joint 41, the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 are sufficiently connected in the step after the nipple 2 is inserted into the soft hose. When the soft hose is connected using the distance “A3” from the tube-side end portion of the collar convex portion 42 of the collar 43 to the boundary surface 46 when screwed, and the soft hose joint 1 is used, From the tube side end of the collar 3 to the boundary surface 46 when the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 are sufficiently screwed in the step after the nipple 2 is inserted into the nipple 2 The distance “A3 ′” was substantially the same.

  Therefore, the soft hose joint 41 is stronger than the soft hose joint 1 and can press the soft hose against the tapered portion 7 of the nipple 2 because the protruding portion 44 of the collar 43 is provided. It is done. Therefore, using the soft hose joint 1 of the first embodiment and the soft hose joint 41 of the present embodiment, the nipple screw 13 of the ring 4 and the ring screw 8 of the nipple 2 are sufficiently screwed together, so that the soft When the hose is brought into pressure contact with the tapered portion 7 of the nipple 2, the configuration of the contact portion between the soft hose and the tapered portion 7 will be specifically examined with reference to FIGS. 29 and 30. FIG. 29 is a cross-sectional view when a soft hose is connected using the soft hose joint 41 of the present embodiment. FIG. 30 is a cross-sectional view when a soft hose is connected using the soft hose joint 1 of the first embodiment. The white arrow in the figure indicates the moving direction of the ring 4 when the ring 4 is screwed to the outer peripheral surface of the nipple 2. In addition, the arrows in the figure indicate the moving direction of the collar pushed by the ring 4 to the tube side of the tapered portion 7 of the nipple 2.

  In the soft hose joint 41, as shown by A in FIG. 29, the collar 43 presses the soft hose against the tapered portion 7 of the nipple 2 so that the three protrusions formed along the outer periphery of the soft hose and the tapered portion 7 are formed. The part is in contact. Further, in the soft hose joint 1, as shown in FIG. 30B, the collar 3 is formed along the outer periphery of the soft hose and the tapered portion 7 by pressing the soft hose against the tapered portion 7 of the nipple 2. Two protrusions are in contact.

  From the above, in the soft hose joint 41, the region where the soft hose and the taper portion 7 of the nipple 2 are brought into contact with each other is increased by the amount of the protrusion 44, so that the soft hose is more stably tapered. 7 can be pressed. Further, since the protruding inner peripheral surface 45 of the protruding portion 44 of the collar 43 has a taper A smaller than the taper B of the contact inner peripheral surface 9, the collar 3 is provided with only the contact inner peripheral surface 9. In addition, the soft hose and the tapered portion 7 of the nipple 2 can be pressed more strongly. Thus, the collar 43 of this embodiment has enhanced stability and strength of the press contact between the soft hose and the tapered portion 7 of the nipple 2 as compared to the collar 3 of the first embodiment.

  In order to press the soft hose more strongly with the tapered portion 7 of the nipple 2, the configuration is not limited to the collar 43, but the contact inner peripheral surface 9 of the collar 3 is divided into the tube side and the soft hose side, and the taper on the tube side. This can also be realized by making the diameter smaller than the taper on the soft hose side.

[Fifth Embodiment]
Next, a soft hose joint 51 according to a fifth embodiment of the present invention will be described with reference to FIGS. First, the configuration of the soft hose joint 51 of the present embodiment will be described with reference to FIGS. 31 and 32. FIG. 31 is a perspective view showing a schematic configuration of the soft hose joint 51 of the present embodiment. FIG. 32 is a cross-sectional view showing a schematic configuration of the soft hose joint 51.

  As shown in FIG. 31, the soft hose joint 51 includes a nipple 2, a collar 53, and a ring 54. That is, the soft hose joint 51 has a configuration in which the collar nut 5 is omitted as in the soft hose joint 21 of the second embodiment.

  Instead of the collar nut 5, the collar 53 is provided with an extraction projection 55 for extracting the collar 53 together with the ring 54 from the nipple 2. The collar 53 has the same configuration as that of the collar 43 of the fourth embodiment except for the configuration in which the removal convex portion 55 is provided. Therefore, the components having the same functions as those of the collar 43 are the same. The description is omitted. In the present embodiment, the collar 53 has a configuration in which the removal convex portion 55 is provided in the configuration of the collar 43 of the fourth embodiment, but the collar 3 of the first embodiment or the collar 3 of the third embodiment. The collar 33 may have a configuration in which the removal convex portion 55 is provided.

  The ring 54 is provided with an extraction concave portion 56 for allowing the extraction convex portion 55 to pass from the tube side of the ring 54 to the soft hose side rather than the outer end portion on the soft hose side. Since the ring 54 has the same configuration as that of the ring 4 of the first embodiment except for the configuration in which the removal recess 56 is provided, the components having the same functions as the ring 4 are the same. Reference numerals are added and description is omitted.

  As shown in FIG. 32, the protruding protrusion 55 for the collar 53 is formed on the ring hose 14 of the ring 54 from the outer peripheral surface of the collar 53 toward the outer peripheral surface of the ring 54 at the end of the collar 53 on the soft hose side. It is the structure which protruded rather than the inner peripheral surface. In addition, in this embodiment, although the extraction convex part 55 is the structure provided with two, this invention is not restricted to this, At least one should just be provided and two or more are provided. It is desirable.

  The withdrawal recess 56 of the ring 54 is provided in the ring projection 14 so that the removal projection 55 passes from the tube side of the ring projection 14 to the soft hose side. The extraction recess 56 is configured to be approximately 0.5 mm or more larger than the extraction protrusion 55, and the extraction protrusion 55 can easily pass therethrough. In the present embodiment, the number of the recesses 56 for removal is the same as the number of the protrusions 55 for removal, but the present invention is not limited to this, and the number of the recesses 56 for removal is equal to or greater than that of the protrusions 55 for removal. What is necessary is just to be provided.

  Here, a soft hose connection method using the soft hose joint 51 of the present embodiment and a method of separating the soft hose from the soft hose joint 51 will be described with reference to FIG. FIGS. 33A to 33E are perspective views showing a method for connecting a soft hose using the soft hose joint 51 and a method for separating the soft hose from the soft hose joint 51. In addition, the soft hose coupling method using the soft hose joint 1 of the first embodiment and the soft hose joint 21 of the second embodiment and the method of separating the soft hose from the soft hose joint 21 described above are the same. Detailed description of the portion is omitted.

  First, as shown in FIG. 33A, the ring 54 and the collar 53 are passed in this order from one end of the soft hose. The ring 54 is passed through the soft hose from the side where the ring convex portion 14 is provided on the inner peripheral surface. The collar 53 is passed through the soft hose from the side where the removal convex portion 55 is provided. Then, the tapered portion 7 of the nipple 2 is inserted into the opening of the soft hose on the side through which the ring 54 and the collar 53 are passed, and the collar 53 is brought into pressure contact with the tapered portion 7 as much as possible by hand tightening.

  Then, as shown in FIG. 33 (b), the ring 54 is moved in the direction of the nipple 2, and the removal projection 55 of the collar 53 is passed through the removal recess 56 of the ring 54.

  Then, as shown in FIG. 33 (c), the ring 54 and the nipple 2 are screwed together by hand tightening by rotating the ring 54 in the direction in which the ring 54 is attached to the nipple 2 (the direction of the arrow shown in FIG. 33 (c)). Let Then, by sufficiently screwing the ring 54 and the nipple 2, the ring convex portion 14 of the ring 54 is engaged with the collar convex portion 42 of the collar 53, and the collar 53 is moved in the direction of increasing the diameter of the tapered portion 7. Move further. As a result, the collar 53 presses the soft hose more strongly against the outer peripheral surface of the tapered portion 7.

  When the soft hose is separated from the soft hose joint 51, as shown in FIG. 33 (d), the ring 54 is rotated in the direction in which the ring 54 is removed from the nipple 2 (the direction of the arrow shown in FIG. 33 (d)). As a result, the ring projection 14 of the ring 54 and the removal projection 55 of the collar 53 are engaged. Then, as shown in FIG. 33 (e), the collar 53 is continuously rotated by rotating the ring 54 in the direction in which it is removed from the nipple 2 while the ring convex portion 14 and the removal convex portion 55 are engaged. Is withdrawn from the nipple 2 while engaging with the ring 54.

  As described above, in the soft hose joint 51 of the present embodiment, the collar 53 is provided with the removal convex portion 55, so that when the ring 54 is removed from the nipple 2, the inner periphery of the ring 54 is provided. Since the provided ring projection 14 and the removal projection 55 are engaged, the collar 53 can be removed from the nipple 2 together with the ring 54. In other words, the collar 53 can be easily removed from the nipple 2 by providing the withdrawal convex portion 55 at the end of the collar 53. The removal projection 55 may be configured as the same member using the same material as the collar 53, or may be configured as a separate member using a different material.

  Further, in order to remove the collar 53 together with the ring 54 from the nipple 2, the removal projection 55 is provided closer to the soft hose than the outer end of the ring projection 14 on the soft hose side. Need to be.

  However, the collar 53 is provided on the tube side with respect to the ring 54, and the removal convex portion 55 projects from the outer peripheral surface of the collar 53 toward the outer peripheral surface of the ring 54 more than the inner peripheral surface of the ring convex portion 14. Therefore, in order to dispose the removal convex portion 55 closer to the soft hose than the outer end of the ring 54 on the soft hose side, the removal convex portion 55 passes through the ring convex portion 14. There is a need to.

  Therefore, in the soft hose joint 51 according to the present embodiment, the extraction convex portion 55 is provided on the ring convex portion 14 of the ring 54 by providing the extraction concave portion 56 through which the extraction convex portion 55 passes. It becomes possible to arrange | position on the soft hose side rather than the outer side edge part of this soft hose.

  In the present embodiment, when the ring 54 is removed from the nipple 2, the removal protrusion 55 of the collar 53 engages with the ring protrusion 14 of the ring 54. However, the present invention is not limited to this. That is, in order to remove the collar 53 from the nipple 2 together with the ring 54, the ring convex portion 14 is provided on the tube side of the end portion on the soft hose side of the ring 54, and the convex portion for removal is provided. The member with which 55 engages may be configured to protrude along the inner periphery of the inner peripheral surface of the end portion of the ring 54 on the soft hose side. In this case, the inner diameter of the ring convex portion 14 needs to be designed to be smaller than the outer diameter of the collar convex portion 42 and larger than the outer diameter of the removal convex portion 55.

  In addition, as shown in FIG. 33 (d), when the ring 54 is rotated while the ring convex portion 14 and the removal convex portion 55 are engaged with each other in order to remove the ring 54 from the nipple 2. 34, when the position of the removal convex portion 55 and the removal concave portion 56 coincide with the rotation of the ring 54, the removal convex portion 55 is located at the position surrounded by the line in FIG. And the removal recess 56 come into contact with each other. FIG. 34A is a perspective view showing a main part configuration of the soft hose joint 51 of the present embodiment, and FIG. 34B shows a main part configuration of the removal convex part 55 and the removal concave part 56. FIG.

  At this time, if the contact position of the removal convex portion 55 and the removal concave portion 56 has an angle, the removal convex portion 55 and the removal concave portion 56 are caught at the contact position, and the ring 54 rotates. Be disturbed. Therefore, as shown in FIG. 34 (b), by chamfering the contact positions of the removal convex portion 55 and the removal concave portion 56, the removal convex portion 55 and the removal concave portion 56 are in the contact position. The ring 54 can be smoothly rotated without being caught.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The joint for soft hoses of this invention can be used suitably in order to connect a pipe | tube and a soft hose.

It is a perspective view which shows the coupling for soft hoses of 1st Embodiment of this invention. (A) is a side view which shows the nipple of the said joint for soft hoses, (b) is the front view which looked at (a) from the direction of the arrow. (A) is a side view which shows the color of the said joint for soft hoses, (b) is the front view which looked at (a) from the direction of the arrow. It is a figure which shows an example of the shape in the internal peripheral surface of the said color | collar. It is a figure which shows another example of the shape in the internal peripheral surface of the said color | collar. (A) is a side view which shows the ring of the said joint for soft hoses, (b) is the front view which looked at (a) from the direction of the arrow. (A) is the side view which shows the nut for color | collars of the said joint for soft hoses, (b) is the front view which looked at (a) from the direction of the arrow. (A)-(c) is a side view which shows the connection method of the soft hose using the said joint for soft hoses. It is a side view which shows removal of the joint for soft hoses at the time of screwing together the collar and the nut for collars. It is a side view which shows removal of the coupling for soft hoses when the collar and the nut for collars are not screwed together. It is a perspective view which shows the coupling for soft hoses of 2nd Embodiment of this invention. It is a perspective view which shows the color | collar of the said joint for soft hoses. (A)-(c) is a side view which shows the connection method of the soft hose using the said joint for soft hoses. (A)-(c) is a side view which shows extraction of the said joint for soft hoses. (A) is a side view which shows the nipple of the joint for soft hoses of 3rd Embodiment, (b) is the front view which looked at (a) from the direction of the arrow. (A) is a side view which shows the color of the said joint for soft hoses, (b) is the front view which looked at (a) from the direction of the arrow. It is a figure which shows an example of the shape in the internal peripheral surface of the said color | collar. It is a figure for comparing the attachment / detachment time required for attachment / detachment of a soft hose in the case where the joint for soft hoses of 1st Embodiment and 3rd Embodiment is used, and the case where the conventional SP nipple and the hose band are used. . After supplying the water leakage and water generated between the soft hose and the nipple in the case of using the soft hose joint of the first embodiment and the third embodiment and in the case of using the conventional SP nipple and the hose band It is a figure for comparing the connection condition of each joint and soft hose. It is a figure which shows the connection of the pipe | tube using the conventional hose band, and a soft hose. (A) is a side view which shows the nipple of the conventional example of the joint for soft hoses, (b) is a front view which shows the color of the joint for soft hoses, (c) is the color of the joint for soft hoses. It is the front view and side view which show. (A) is a side view which shows the nipple of the other conventional example of the joint for soft hoses, (b) is a side view which shows the ring of the said joint for soft hoses. It is sectional drawing which shows schematic structure of the coupling for soft hoses of 4th Embodiment. (A) is a side view which shows the color of the joint 1 for soft hoses of 1st Embodiment, (b) is sectional drawing which looked at the A-A 'cross section of Fig.24 (a) from the direction of the arrow. (A) is a side view which shows the collar of the joint for soft hoses of 4th Embodiment, (b) is sectional drawing which looked at the A-A 'cross section of Fig.25 (a) from the direction of the arrow. (A)-(c) is sectional drawing which shows the process of inserting a nipple in a soft hose, when connecting a soft hose using the joint for soft hoses of 1st Embodiment, and the joint for soft hoses of 4th Embodiment It is. (A), (b) It is sectional drawing which shows the process after the process shown to Fig.26 (a)-(c) in the case of connecting a soft hose using the joint for soft hoses of 4th Embodiment. . It is sectional drawing which shows the process after the process shown to Fig.26 (a)-(c), when connecting a soft hose using the joint for soft hoses of 1st Embodiment. It is sectional drawing at the time of connecting a soft hose using the joint for soft hoses of 4th Embodiment. It is sectional drawing at the time of connecting a soft hose using the joint for soft hoses of 1st Embodiment. It is a perspective view which shows schematic structure of the coupling for soft hoses of 5th Embodiment. It is sectional drawing which shows schematic structure of the said joint for soft hoses. (A)-(e) is a perspective view which shows the connection method of the soft hose using the said joint for soft hoses, and the method of separating a soft hose from the said joint for soft hoses. (A) It is a figure which shows the principal part structure of the said joint for soft hoses, (b) is sectional drawing which shows the principal part structure of the convex part for extraction in the said joint for soft hoses, and the concave part for extraction.

Explanation of symbols

1, 21, 31, 41, 51 Soft hose joints 2, 32 Nipple (support tube)
3, 23, 33, 43, 53 Color (pressing member)
4, 54 Ring (auxiliary member)
5 Nut for collar (Punching member)
6 Water supply pipe connection part 7 Taper part 8 Ring screw (support pipe screwing part)
9, 39 Contact inner peripheral surface (first contact inner peripheral surface)
10 Non-contact inner peripheral surface 11 Screw for nut (pressing member screwing portion)
12, 25, 42 Color convex part 13 Nipple screw 14 Ring convex part (inner peripheral convex part, protruding edge part)
15 Tool hole 16 Color screw (Punching part screwing part)
17, 37 Nut convex portion 24 Hook portion 44 Protruding portion 45 Protruding inner peripheral surface (second contact inner peripheral surface)
46 Boundary surface 55 Extraction convex part 56 Extraction concave part

Claims (13)

In joints for soft hoses for connecting soft hoses and tubes,
A support tube having a tapered portion with one end connected to the tube and the other end inserted into the opening of the soft hose;
An auxiliary member that is screwed into a support tube threaded portion provided on the outer peripheral surface on the tube side of the taper portion in the support tube, and has an inner peripheral convex portion on the inner peripheral surface;
When the taper portion of the support tube is inserted into the soft hose, the support tube is loosely fitted to the outer periphery of the distal end of the soft hose and is rotatably provided independently of the auxiliary member. A soft hose joint, comprising: a pressing member that moves forward by abutting against an inner peripheral convex portion of the auxiliary member along with screwing to the screwing portion.   The soft hose joint according to claim 1, wherein the pressing member and the auxiliary member are separated from each other.   3. The soft hose coupling according to claim 2, further comprising: a pulling member for pulling out the pressing member together with the auxiliary member when the auxiliary member is pulled out from the support tube. . The pressing member has a pressing member screwing portion on the outer peripheral surface of the soft hose side,
The extraction member has an outer diameter larger than an inner diameter of the inner peripheral convex portion of the auxiliary member on the soft hose side than the auxiliary member, and an inner peripheral surface is screwed into the pressing member screwing portion. The soft hose according to claim 3, wherein the soft hose has a member screwing portion, and the presser member screwing portion and the pulling member screwing portion are reversely wound with respect to the support tube screwing portion. Fittings. The punching member is
The hook part which is extended and formed with respect to the soft hose side from the edge part of the said pressing member, and is hooked on the outer side edge part by the side of the soft hose of the said auxiliary member is provided. The joint for soft hose as described.   The joint for a soft hose according to claim 1, wherein the support tube includes at least two convex portions formed along an outer periphery of the support tube in the tapered portion. The pressing member has a cylindrical shape,
The inner peripheral surface of the pressing member is divided into a contact inner peripheral surface that contacts the soft hose and a non-contact inner peripheral surface that does not contact the soft hose in order to press the soft hose against the tapered portion of the support tube. ,
The soft hose joint according to claim 1, wherein a diameter of the non-contact inner peripheral surface increases toward an end portion of the pressing member. The pressing member has a cylindrical shape,
The inner peripheral surface of the pressing member includes a first contact inner peripheral surface that comes into contact with the soft hose to press the soft hose against the tapered portion of the support tube.
The first contact inner peripheral surface has substantially the same inclination as the taper portion of the support tube, and is provided with one or more convex portions, and the diameter increases toward the end of the pressing member. The joint for soft hoses according to claim 1, wherein   The soft hose joint according to claim 1, wherein the auxiliary member is provided with a tool hole for turning the auxiliary member by a tool. The pressing member includes a second contact inner peripheral surface that comes into contact with the soft hose in order to press the soft hose against the tapered portion of the support tube, on the tube side of the first contact inner peripheral surface.
The second contact inner peripheral surface has a diameter that increases toward the tube-side end of the pressing member, and has a taper smaller than the taper of the first contact inner peripheral surface. The joint for soft hoses according to claim 8. The auxiliary member is provided with a protruding edge protruding along the circumference on the inner peripheral surface of the end portion on the soft hose side,
The extraction member is an extraction protrusion protruding from the outer peripheral surface of the auxiliary member toward the outer peripheral surface of the auxiliary member from the inner peripheral surface of the protruding edge at the soft hose side end of the pressing member. And
The joint for a soft hose according to claim 3, wherein the protruding edge portion of the auxiliary member is provided with an extraction recess through which the extraction projection passes.   When the auxiliary member is rotated while the protruding edge and the removal convex portion are engaged, the removal convex portion and the removal concave portion are arranged so that the removal convex portion and the removal concave portion are removed. The joint for soft hoses according to claim 11, wherein the joint for chamfering is chamfered at a position where it comes into contact with the removal recess. In joints for soft hoses for connecting soft hoses and tubes,
One end is connected to the tube, and the other end is a support tube consisting of a tapered portion inserted into the opening of the soft hose;
A pressing member that presses the soft hose against the outer peripheral surface of the tapered portion by moving in an increasing direction of the diameter of the tapered portion,
The support tube is moved to the tube side of the support tube by screwing with the outer peripheral surface of the support tube, and along with the movement, the pressing member is moved in the direction of increasing the diameter of the taper portion, and An auxiliary member for assisting pressure contact with the outer peripheral surface,
The soft hose joint, wherein the pressing member is rotatable with respect to the auxiliary member.

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