JP4938470B2 - Water pipe connecting end, water pipe connecting body, water pipe connecting core member, water pipe, water pipe connection structure, water pipe device, water pipe protective cap, and water pipe connecting end Forming tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection end of a water pipe capable of easily connecting the water pipe to a connector. <P>SOLUTION: The connection end 11 comprises an end part 10a of a water pipe 10 made of a synthetic resin, a core member 13 inserted into the end part 10a and an engagement body 14. The engagement body 14 is fitted to an outer peripheral portion of an end part rear portion 10c at a back side with respect to an end part tip portion 10b to which an in-core portion 1e disposed on a header 1 is inserted to keep a water stop member 5a into closely contact with the outer peripheral face, in a state of retaining the end part rear portion 10c with the core member 13. The end part 10a is locked to a socket 1b, and the water pipe 10 is connected to the header 1 by inserting the connection end 11 into the socket 1b of the header 1 and engaging an attachment body 6 and the engagement body 14. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a connecting end of a water pipe, an engaging body for connecting a water pipe, a core member for connecting a water pipe, a water pipe, a water pipe connecting structure, and a water pipe for easily connecting to a connector The present invention relates to a protective cap for a water pipe used for the device, the connection end, and a connection end forming tool for the water pipe that forms the connection end.

  Conventionally, as a connection structure for connecting a water pipe to a connection tool, as shown in FIG. 26, an end portion 30a of the water pipe 30 is formed with a bulging portion 30b for connection projecting outward. There was a thing (for example, refer to patent documents 1). In this connection structure, the bulging portion 30b is formed by expanding the diameter of a metal ring body 31 inserted into the water pipe 30 from the inside. And when connecting the water pipe 30 to the connection tool 32, while inserting the edge part 30a of the water flow pipe 30 in the receiving port 32a of the connection tool 32, it divides | segments the half-divided part in the bulging part 30b. The cap nut 34 was screwed into the receiving port 32a of the connector 32 so that the divided members 33 and 33 were pressed down. In addition, the code | symbol 35 is a water stop members, such as an O ring which closely_contact | adheres to the front-end | tip part 30c of the edge part 30a of the water flow pipe 30, and the receiving port 32a of the connection tool 32.

JP 2004-225713 A

  By the way, in the conventional connection structure, in order to form the bulging part 30b in the end part 30a of the water flow pipe 30, the diameter of the metal ring body 31 is expanded from the inside. Enlarging the diameter of the body 31 requires a great deal of force, and this expanding operation is very troublesome. Further, by forcibly expanding the diameter of the end portion 30a of the water flow pipe 30 by the ring body 31, the tip portion 30c to which the water stop member 35 is in close contact is deformed, and water stop by the water stop member 35 is not sure. There was a fear.

  The present invention has been made in order to solve the above-described conventional drawbacks, and an object of the present invention is to provide a connection end of a water pipe, a water pipe that can easily connect the water pipe to a connector. An engaging body for connection, a core member for connecting a water pipe, a water pipe, a connection structure of the water pipe, a water pipe device, a protective cap for the water pipe used for the connection end, and the connection end It is providing the connection end part formation tool of the water flow pipe to form.

  In addition, the other purpose is to ensure the water stop by the water stop member, the connection end of the water pipe, the engagement body for the water pipe connection, the core member for the water pipe connection, the water pipe body, the water pipe And a water pipe device, a water pipe protective cap used for the connection end, and a water pipe connection end forming tool for forming the connection end.

In order to achieve the above object, the present invention has the following configuration. That is,
The connection end portion of the water pipe according to the first aspect of the present invention is inserted into the receptacle of the connection tool in order to connect the water pipe made of synthetic resin to the connection tool provided with the cylindrical in-core part. An end portion of the water pipe, a cylindrical core member inserted into the end portion, and the end portion being prevented from coming off from the receiving port. And an engaging body that is engageable with a locking means provided at the receiving port. Here, the core member is an end portion rear portion behind the end portion front end portion in which the in-core portion is inserted and the water stop member is brought into close contact with the outer peripheral surface or the inner peripheral surface in the end portion. Has been inserted. And the said engaging body is engage | inserted by the outer peripheral part of the said edge part rear part so that the edge part rear part may be clamped with the said core member.

  In this way, the engaging body is connected with the core member at the outer peripheral portion of the rear end portion of the end portion of the water flow pipe, rearward of the front end portion of the end portion where the in-core portion is inserted and the water stop member is in close contact. It is fixed to the end portion by being fitted so as to sandwich the rear portion. Then, the end portion to which the engaging body is fixed, that is, the connecting end portion is inserted into the receiving port of the connection tool, and the engaging means is engaged with the engaging means provided in the receiving port, so that the water flow pipe Can be easily connected to the connector. In addition, since the engaging member is fixed to the end portion by sandwiching the rear portion of the end portion between the core member and the engaging body, the end portion where the water stop member is in close contact with the engaging body is fixed to the end portion. Deformation of the partial tip can be avoided. In addition, the in-core portion provided in the connector is inserted into the end portion tip portion, so that the in-core portion prevents the end portion tip portion from being deformed due to crushing.

  According to a second aspect of the present invention, the connection end of the water pipe according to the first aspect is the connection end according to the first aspect, wherein the engaging body is composed of a split ring and a cylindrical main body ring. Here, the split ring has a cut portion, is formed in a C-shaped cross section, and is fitted into the outer peripheral portion of the rear portion of the end portion. On the other hand, the main body ring is fitted into the outer peripheral portion of the split ring, and the split ring is reduced in diameter so that the split ring press-contacts the rear portion of the end portion, and the reduced diameter state is maintained.

  Moreover, the connection end part of the water flow pipe which concerns on invention of Claim 3 is the connection end part of Claim 2. WHEREIN: The length of the axial direction of the said split ring is longer than the length of the axial direction of the said main body ring. Is also formed short. In this way, by forming the split ring shorter than the main body ring, due to the difference in length, the tolerance of each part, the amount of movement by which the split ring moves rearward together with the water pipe due to the water pressure inside the water pipe, etc. Can be absorbed. Therefore, it is possible to prevent the split ring from hitting the rear locking means, or to soften the hit to the locking means, and thus it is possible to prevent breakage of the split ring.

  Moreover, the connection end part of the water pipe which concerns on invention of Claim 4 is the connection end part of any one of Claim 1 thru | or 3, The said in-core part is inserted in the said edge part front-end | tip part. Thus, the water stop member is in close contact with the inner peripheral surface, and a metal ring member is fitted to the outer peripheral portion of the end portion of the end portion. As a result, the metal ring member receives the end portion of the end portion with which the water stop member is in close contact with the water pressure. In this way, the diameter of the end portion of the end portion due to water pressure can be prevented by the metal ring member, and therefore, it becomes easy to make the connection tool with the synthetic resin.

  An engaging body for connecting a water pipe according to the invention described in claim 5 is an end of the water pipe for connecting a water pipe made of synthetic resin to a connector provided with a cylindrical in-core part. Comprising a portion and a cylindrical core member inserted into the end portion thereof, and constituting a connection end portion to be inserted into the receiving port of the connection tool, the end portion portion with respect to the receiving port It is an engaging body that can be engaged with a locking means provided at the receiving port so as to be prevented from coming off. Here, the core member is an end portion rear portion behind the end portion front end portion in which the in-core portion is inserted and the water stop member is in close contact with the outer peripheral surface or the inner peripheral surface in the end portion portion. Has been inserted. Therefore, the engagement body is constituted by a split ring and a cylindrical main body ring so as to be fitted to the outer peripheral portion of the rear portion of the end portion so as to sandwich the rear portion of the end portion with the core member. The split ring has a cut portion, is formed in a C-shaped cross section, and is fitted into the outer peripheral portion of the rear end portion. On the other hand, the main body ring is fitted into the outer peripheral portion of the split ring, and the split ring is reduced in diameter so that the split ring press-contacts the rear portion of the end portion, and the reduced diameter state is maintained.

  In this way, the engaging body is connected with the core member at the outer peripheral portion of the rear end portion of the end portion of the water flow pipe, rearward of the front end portion of the end portion where the in-core portion is inserted and the water stop member is in close contact. It is fixed to the end portion by being fitted so as to sandwich the rear portion. Then, the end portion to which the engaging body is fixed, that is, the connecting end portion is inserted into the receiving port of the connection tool, and the engaging means is engaged with the engaging means provided in the receiving port, so that the water flow pipe Can be easily connected to the connector. In addition, since the engaging member is fixed to the end portion by sandwiching the rear portion of the end portion between the core member and the engaging body, the end portion where the water stop member is in close contact with the engaging body is fixed to the end portion. Deformation of the partial tip can be avoided.

  Moreover, the engaging body for water pipe connection which concerns on invention of Claim 6 is set to the engaging body of Claim 5, The length of the axial direction of the said split ring is longer than the length of the axial direction of the said main body ring. Is also formed short. In this way, by forming the split ring shorter than the main body ring, due to the difference in length, the tolerance of each part, the amount of movement by which the split ring moves rearward together with the water pipe due to the water pressure inside the water pipe, etc. Can be absorbed. Therefore, it is possible to prevent the split ring from hitting the rear locking means, or to soften the hit to the locking means, and thus it is possible to prevent breakage of the split ring.

  The core member for connecting a water pipe according to the invention described in claim 7 is an end of the water pipe for connecting a water pipe made of synthetic resin to a connector provided with a cylindrical in-core part. It is a cylindrical core member which comprises a connection end part which is provided with a part and the engaging body which can be engaged with the latching means provided in the receiving port of the said connection tool, and is inserted in the said receiving port. The core member is inserted into the rear end portion of the end portion, behind the front end portion of the end portion portion for inserting the in-core portion into close contact with the outer peripheral surface or the inner peripheral surface. The end portion rear portion is clamped by the engaging body fitted into the outer peripheral portion of the end portion rear portion.

  In this way, the core member is an engagement body that is fitted into the outer peripheral portion of the rear end portion of the end portion of the water flow pipe, behind the front end portion of the end portion where the in-core portion is inserted and the water stop member is in close contact. The engagement body is fixed to the end portion by sandwiching the rear portion of the end portion. Then, the end portion to which the engaging body is fixed, that is, the connecting end portion is inserted into the receiving port of the connection tool, and the engaging means is engaged with the engaging means provided in the receiving port, so that the water flow pipe Can be easily connected to the connector. In addition, since the engaging member is fixed to the end portion by sandwiching the rear portion of the end portion between the core member and the engaging body, the end portion where the water stop member is in close contact with the engaging body is fixed to the end portion. Deformation of the partial tip can be avoided.

  Moreover, the water flow pipe body which concerns on invention of Claim 8 equips one end or both ends of a water flow pipe with the connection end part of any one of Claim 1 thru | or 3.

  Moreover, the water flow pipe body which concerns on invention of Claim 9 equips one end or both ends of a water flow pipe with the connection end part of Claim 4 is provided.

  A connection structure for a water pipe according to the invention described in claim 10 is a connection structure between the water pipe and the connector provided with the connection end according to any one of claims 1 to 4. The water stop pipe is connected to the connector by the engagement of the engagement body and the locking means, and the water stop is in close contact with the end portion tip portion into which the in-core portion is inserted and the receiving port. Water is stopped by the member.

  According to an eleventh aspect of the present invention, the water pipe connecting structure according to the tenth aspect is the connecting structure according to the tenth aspect, wherein the locking means crosses the opening of the receiving port so as to engage with the engaging body. Thus, it consists of an attachment body attached to the receptacle.

  The water pipe connecting structure according to the invention of claim 12 is the connecting structure of claim 10 or 11, wherein the water stop member is provided in advance in the receiving port.

  Further, the water pipe connection structure according to the invention of claim 13 is the connection structure of any one of claims 10 to 12, wherein the front end surface of the engaging body hits the receiving port. Thus, a positioning surface is provided for positioning the engaging body so as not to advance further forward. In this way, the insertion end of the end portion of the water pipe is regulated by positioning the front end surface of the engaging body so as not to move forward any further by hitting the positioning surface provided at the receiving port. Is done. On the other hand, the end portion is prevented from coming off from the receiving port by the locking means that engages with the engaging body. For this reason, the position of the end portion, and thus the end portion of the end portion, is specified, and the end portion of the end portion can be accurately arranged at the position where the water stop member is located.

  Moreover, the water pipe apparatus which concerns on invention of Claim 14 consists of the water pipe body of Claim 8, and the protective cap attached to the said connection end part. Here, the protective cap includes a peripheral surface protecting portion that protects the outer peripheral surface of the end portion of the end portion, and a front surface protecting portion that protects the front surface of the connection end portion. By attaching this protective cap to the connection end of the water conduit before it is connected to the connector, the tip of the end of the water conduit where the water stop member is in close contact with the front of the connection end Is done. And when connecting a water pipe to a connection tool, this protection cap is removed from a connection end.

  Moreover, the water pipe apparatus which concerns on invention of Claim 15 is the water pipe apparatus of Claim 14, Comprising: The said surrounding surface protection part is formed so that the rear-end surface may contact | abut to the said engagement body. Thereby, when the water flow pipe with the protective cap attached to the connection end is inserted into the sheath pipe from the protective cap side, the engaging body takes charge of the load received by the protective cap pushing forward in the sheath pipe. . Therefore, this load does not act on the front surface of the connection end through the protective cap, and the front surface is protected.

  Further, the water pipe device according to the invention described in claim 16 is the water pipe device according to claim 14 or 15, wherein the peripheral surface protection portion has an outer diameter substantially the same as an outer diameter of the engaging body or It is formed larger than the outer diameter of the engaging body. Thereby, when the water flow pipe with the protective cap attached to the connection end portion is inserted into the sheath pipe from the protective cap side, the front end face of the engaging body does not hit the inner surface of the sheath pipe, and the engaging body is protected. be able to.

  Moreover, the water pipe apparatus which concerns on invention of Claim 17 is the water pipe apparatus of any one of Claim 14 thru | or 16. WHEREIN: The said front surface protection part is formed in the taper shape. Thereby, when the water flow pipe with the protective cap attached to the connection end portion is inserted into the sheath pipe from the protective cap side, the load received by the protective cap pushing forward in the sheath pipe can be reduced.

  Moreover, the protective cap of the water pipe which concerns on invention of Claim 18 in the edge part of the synthetic resin water pipe connected to the connector provided with the cylindrical in-core part, and the said edge part A cylindrical core member inserted into the rear part of the end part behind the tip part of the end part for inserting the in-core part and bringing the water-stopping member into close contact with the outer peripheral surface or the inner peripheral surface; An engagement body that is fitted on an outer peripheral portion of the rear end portion of the end portion so as to sandwich the rear portion of the end portion portion with the core member and is engageable with a locking means provided at a receiving port of the connector. Attached to the connecting end. The protective cap includes a peripheral surface protection portion that protects the outer peripheral surface of the end portion of the end portion and covers the front surface of the connection end portion and protects the front surface of the connection end portion.

  At the connection end to which this protective cap is attached, the engagement body is the rear end portion of the end portion of the water pipe, rearward of the front end portion of the end portion where the in-core portion is inserted and the water stop member is in close contact. It is fixed to this edge part part by being fitted so that an edge part rear part may be pinched | interposed into an outer peripheral part of a core member. Then, the end portion to which the engaging body is fixed, that is, the connecting end portion is inserted into the receiving port of the connection tool, and the engaging means is engaged with the engaging means provided in the receiving port, so that the water flow pipe Can be easily connected to the connector. In addition, since the engaging member is fixed to the end portion by sandwiching the rear portion of the end portion between the core member and the engaging body, the end portion where the water stop member is in close contact with the engaging body is fixed to the end portion. Deformation of the partial tip can be avoided. Therefore, by attaching this protective cap to the connection end of the water pipe before being connected to the connector, the end portion tip of the water pipe where the water stop member is in close contact with the front surface of the connection end Is protected. And when connecting a water pipe to a connection tool, this protection cap is removed from a connection end.

  Moreover, the protective cap of the water flow pipe which concerns on invention of Claim 19 is a protection cap of Claim 18. WHEREIN: The said surrounding surface protection part is formed so that the rear-end surface may contact | abut to the said engagement body. . Thereby, when the water flow pipe with the protective cap attached to the connection end is inserted into the sheath pipe from the protective cap side, the engaging body takes charge of the load received by the protective cap pushing forward in the sheath pipe. . Therefore, this load does not act on the front surface of the connection end through the protective cap, and the front surface is protected.

  Further, the protective cap for the water pipe according to the invention described in claim 20 is the protective cap according to claim 18 or 19, wherein the outer peripheral surface of the peripheral surface protection portion is substantially the same as the outer diameter of the engaging body. Alternatively, it is formed larger than the outer diameter of the engaging body. Thereby, when the water flow pipe with the protective cap attached to the connection end portion is inserted into the sheath pipe from the protective cap side, the front end face of the engaging body does not hit the inner surface of the sheath pipe, and the engaging body is protected. be able to.

  Moreover, the protective cap of the water flow pipe which concerns on invention of Claim 21 is a protection cap of any one of Claim 18 thru | or 20. WHEREIN: The said front surface protection part is formed in the taper shape. Thereby, when the water flow pipe with the protective cap attached to the connection end portion is inserted into the sheath pipe from the protective cap side, the load received by the protective cap pushing forward in the sheath pipe can be reduced.

  A connection end forming tool for a water pipe according to the invention of claim 22 is a connection end forming tool for forming the connection end of the water pipe according to claim 2 or 3, 1 support body, a 2nd support body, and a moving means are provided. Here, in the water pipe with a core member in which the core member is inserted into the water pipe, the first support body is provided on an end surface on one side of the split ring fitted into the outer peripheral part of the rear part of the end part. It abuts and supports the water pipe with the core member. On the other side of the split ring, the second support body abuts against an end surface of the main body ring fitted into the outer peripheral portion of the water pipe with core member on the side opposite to the split ring side, and the core Supports water pipes with members. The moving means moves the main body ring relatively to the split ring side so that the first support body and the second support body are brought close to each other so as to be fitted to the outer peripheral portion of the split ring. One or both of the support and the second support are moved.

  Further, the water pipe connecting end forming tool according to the invention described in claim 23 is the water pipe connecting end forming tool according to claim 22, wherein the tool is connected to the tip end surface of the water pipe with core member. And a positioning part for positioning the water pipe with the core member. In this way, the water pipe with the core member is positioned by the positioning portion provided in the connection end forming tool. On the other hand, the split ring is positioned by a first support that abuts on one end face thereof. Therefore, at the end portion of the water pipe, the length of the end portion tip portion, which is located in front of the split ring and the water stop member is in close contact with the outer peripheral surface or the inner peripheral surface, is maintained at a predetermined length. be able to.

  According to this invention, the engaging body is fitted and fixed to the outer peripheral portion of the rear end portion of the water pipe so as to sandwich the end portion rear portion with the core member, and the end portion to which the engaging body is fixed The water pipe can be easily connected to the connection tool by inserting the portion, that is, the connection end part into the receiving port of the connection tool, and engaging the locking means with the engagement body. And in fixing of the engaging body to the edge part of a water flow pipe, the deformation | transformation of the edge part front-end | tip part which a water stop member closely_contact | adheres can be avoided, and the water stop by a water stop member can be ensured.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 to 10 show an embodiment of the present invention. Reference numeral 1 in the drawing denotes a header as a connection tool. Reference numeral 10 denotes a water pipe made of synthetic resin as a piping material, and is made of, for example, a material such as cross-linked polyethylene or polybutene. Reference numeral 11 denotes a connection end of the water conduit 10. Reference numeral 12 denotes a water conduit that includes the connection end 11 at one or both ends of the water conduit 10.

  The header 1 is for branching hot water (hot water or water). As shown in FIG. 1, a header 1a to which a water pipe (not shown) connected to the hot water supply side is connected, a kitchen, A receiving port 1b to which a water pipe 10 connected to a hot water consumption side such as a bathroom is connected is provided. Specifically, the header 1 includes a cylindrical header body 2 having both ends open, a cylindrical joint 3 connected to the opening 2a at one end (left end in FIG. 1) of the header body 2, and the header body. 2 and a plug 4 that closes the opening 2b at the other end (right end in FIG. 1). Here, the header body 2 is made of metal, for example. Further, the joint 3 is made of, for example, a synthetic resin, and one side thereof is inserted into the opening 2a, and the header 3 is provided with screws 3b and 3b via flanges 3a and 3a. Mounting is fixed. The other side of the joint 3 is the receiving port 1a, and the receiving port 1a has a water stop member 3c made of packing such as an O-ring, and a presser ring 3d for pressing the water stop member 3c. Is provided. Similarly, the plug 4 is attached and fixed to the header body 2 using screws 4b and 4b via flange portions 4a and 4a provided on the plug 4.

  Furthermore, the header 1 has cylindrical auxiliary joints 5 and 5. The auxiliary joint 5 is made of synthetic resin, for example, nylon, and is connected to a through hole 2 c provided in the peripheral wall of the header body 2. Therefore, the receiving port 1 b is formed by the through hole 2 c of the header body 2 and the auxiliary joint 5. Here, the header 1 is provided with a cylindrical in-core portion 1e to be inserted into an end portion tip portion 10b (described later) of the water pipe 10 in the through hole 2c. The in-core portion 1e is formed integrally with the header 1 (specifically, the header body 2), and extends in the receiving port 1b from the back side of the receiving port 1b toward the mouth side. In the illustrated embodiment, the in-core portion 1e extends from the inner end of the extending portion 1f that extends at the back end of the through hole 2c so that the diameter decreases toward the inside of the through hole 2c. It extends toward the mouth side of 2c. The mouth portion of the through hole 2c is a large diameter portion 2d formed in a large diameter, and a water stop member 5a made of packing such as O-ring is fitted into the large diameter portion 2d. The auxiliary joint 5 is attached and fixed to the header body 2 using screws 5c and 5c via flange portions 5b and 5b provided in the auxiliary joint 5. At this time, the auxiliary joint 5 is pressed so that the protruding tip protrusion 5d is inserted into the large-diameter portion 2d to prevent the water stop member 5a from coming off. In this way, the water stop member 5 a is provided in advance in the receiving port 1 b of the header 1. In addition, the rear side of the auxiliary joint 5 (that is, the mouth side of the receiving port 1b) is formed with a large diameter and serves as a recess 5e into which an engaging body 14 described later is inserted. In the vicinity of the rear end of the auxiliary joint 5 (that is, in the vicinity of the mouth of the receiving port 1b), a pair of notches 5f and 5f are formed so as to face each other in the opening of the receiving port 1b (specifically, the recess 5e). It is formed so as to communicate. The receiving port 1b is provided with a positioning surface 1d for positioning the engaging body 14 so that the engaging body 14 does not move forward further when a front end surface 14b of the engaging body 14 to be described later contacts. And this positioning surface 1d consists of the front side step part of the said recessed part 5e.

  Further, the receiving means 1 c of the header 1 is provided with a locking means 1 c. The locking means 1c traverses the opening of the receiving port 1b so as to engage with a rear end surface of the engagement body 14 described later (in the illustrated embodiment, a rear end surface 16b of the main body ring 16 of the engagement body 14). Thus, it consists of the attachment body 6 attached to the receptacle 1b. Specifically, the attachment body 6 is made of, for example, a metal wire having a spring property, and is formed in a substantially U-shape. More specifically, the attachment body 6 is formed in an arc shape similar to the outer peripheral surface of the water pipe 10 so that the two intermediate portions 6a and 6a facing each other in a substantially U shape sandwich the water pipe 10 therebetween. The two tip portions 6b, 6b are formed in a tapered shape. And the attachment body 6 is inserted in these notches 5f and 5f so that it may straddle the connection part 5g between a pair of notches 5f and 5f in the receptacle 1b of the header 1, and is attached to the receptacle 1b. The

  The connection end 11 of the water conduit 10 is inserted into the receiving port 1 b of the header 1 in order to connect the water conduit 10 to the header 1. The connection end portion 11 is configured such that the end portion 10a of the water conduit 10, the cylindrical core member 13 inserted into the end portion 10a, and the end portion 10a are prevented from coming off from the receiving port 1b. , And an engaging body 14 that can be engaged with the locking means 1c (specifically, the attachment body 6) provided in the receiving port 1b. Here, the core member 13 has the water stop member 5a on the outer peripheral surface or inner peripheral surface (the outer peripheral surface in the illustrated embodiment) by inserting the in-core portion 1e provided in the header 1 in the end portion 10a. It is inserted into the end part rear part 10c behind the end part tip part 10b for close contact. Then, the engaging body 14 is fitted into the outer peripheral portion of the end portion rear portion 10 c of the water conduit 10 so as to sandwich the end portion rear portion 10 c with the core member 13. In other words, the engaging body 14 has an end portion on the outer peripheral portion on the rear side (that is, on the outer peripheral portion of the end portion rear portion 10c), leaving the end portion tip portion 10b in the end portion 10a of the water conduit 10. The portion 10 a (specifically, the end portion rear portion 10 c) is fitted so as to be sandwiched between the core member 13.

  Specifically, the core member 13 is made of, for example, a synthetic resin and is formed in a cylindrical shape.

  The engaging body 14 includes a split ring 15 and a main body ring 16. The split ring 15 has a cut portion 15a that divides one portion of the cylinder in the axial direction, is formed in a C-shaped cross section, and is fitted into the outer peripheral portion of the end portion rear portion 10c of the water pipe 10. is there. And the nail | claw 15b, 15b engaged with the inner peripheral surface of this split ring 15 so that it may bite into the water flow pipe 10 is provided. Further, the outer peripheral surface of the split ring 15 is a tapered surface that is inclined so as to have a larger diameter toward the distal direction side of the water pipe 10 (that is, the front end surface 15c side of the split ring 15).

  On the other hand, the main body ring 16 is fitted into the outer peripheral portion of the split ring 15, and the split ring 15 is reduced in diameter so that the split ring 15 press-contacts the end portion rear portion 10c of the water flow pipe 10 and its reduced diameter state. Is to maintain. The main body ring 16 has a cylindrical shape, and the inner peripheral surface thereof is larger in diameter toward the distal direction side of the water pipe 10 (that is, the front end surface 16 a side of the main body ring 16), like the outer peripheral surface of the split ring 15. It becomes the taper surface inclined so that it may become. Here, the axial length of the split ring 15 is shorter than the axial length of the main body ring 16 (see FIGS. 2 and 4). The split ring 15 and the main body ring 16 are made of metal, but may be made of synthetic resin.

  Moreover, the code | symbol 17 is a connection structure of the water flow pipe 10 in the figure. This connection structure 17 is a connection structure between the water pipe 10 provided with the connection end portion 11 and the header 1, and as shown in FIG. 2, the engagement body 14 and the locking means 1 c (details are attachments). The water flow pipe 10 is connected to the header 1 by engagement with the body 6), and the water is stopped by the water stop member 5a which is in close contact with the end portion tip portion 10b into which the in-core portion 1e is inserted and the receiving port 1b. .

  Reference numeral 18 denotes a protective cap attached to the connection end 11 (see FIG. 5). Reference numeral 19 denotes a water pipe device, which includes a water pipe body 12 and a protective cap 18 attached to the connection end 11 thereof. This protective cap 18 is made of, for example, a synthetic resin, and covers the peripheral surface protection portion 18 a that protects the outer peripheral surface of the end portion tip end portion 10 b of the water conduit 10 and the front surface of the connection end portion 11. And a front protection part 18b for protection. Here, the peripheral surface protection portion 18a is formed in a cylindrical shape, and the rear end surface 18c thereof is the engagement body 14 (specifically, the front end surface 16a of the main body ring 16 and the split ring 15 which become the front end surface 14b of the engagement body 14). The front end face 15c) is formed so as to abut. The peripheral surface protection portion 18 a is formed so that its outer diameter is substantially the same (including the same) as the outer diameter of the engaging body 14 or larger than the outer diameter of the engaging body 14. On the other hand, the front surface protection portion 18b is formed in a tapered shape, specifically, a tapered shape formed of a convex curved surface.

  6 to 10 show a connection end forming tool 20 for forming the connection end 11 of the water conduit 10. The connection end forming tool 20 of the water conduit 10 includes a first support body 21, a second support body 22, and a moving means 23. The first support 21 is an outer periphery of the end portion rear portion 10c of the water conduit 10 in the water conduit 12a with a core member in which the core member 13 is inserted into the water conduit 10 (specifically, the end portion rear portion 10c). And abuts against one end surface (front end surface 15c in the illustrated embodiment) of the split ring 15 fitted in the portion, and supports the water pipe 12a with core member (specifically, the end portion tip portion 10b). Is. On the other side of the split ring 15, the second support 22 has an end surface (in the illustrated embodiment) opposite to the split ring 15 side of the main body ring 16 fitted in the outer peripheral portion of the water pipe 12 a with core member. Is in contact with the rear end face 16b) and supports the water pipe 12a with a core member. The moving means 23 moves the main body ring 16 relatively to the split ring 15 side (in the illustrated embodiment, the main body ring 16 is moved to the split ring 15 side) and the outer peripheral portion of the split ring 15 One or both of the first support body 21 and the second support body 22 are moved so as to bring the first support body 21 and the second support body 22 closer to each other (in the illustrated embodiment). In the embodiment, the second support 22 is moved so as to approach the first support 21 side). Further, the connection end forming tool 20 contacts the tip surface 10d of the end portion 10a of the water pipe 10 which is the tip surface of the water pipe 12a with core member, and positions the water pipe 12a with core member. A positioning part 20a is provided.

  Specifically, the connection end forming tool 20 includes a frame 24, the first and second supports 21 and 22, and a male screw member 25. The frame 24 is made of a plate material such as a steel plate, for example, and is bent at a right angle from each end of the intermediate first plate piece (front plate piece) 24a and each end of the first plate piece (front plate piece) 24a and faces each other. It has 2nd board piece (side board piece) 24b, 24b. The first plate piece (front plate piece) 24a functions as the positioning portion 20a, and the first pipe piece (front plate piece) 24a serves as the distal end surface of the water pipe 12a with a core member. In this case, the end portion 10a is positioned by contacting the tip surface 10d of the end portion 10a). Then, the first plate piece (front plate piece) 24a is bent from the upper side to the same side as the second plate piece (side plate piece) 24b, and the core member water pipe 12a (specifically, the end of the water pipe 10). A first restraining piece 24c that suppresses the inner surface of the water pipe 12a with a core member (specifically, the water pipe 10) is provided so that the portion 10a) does not rise. Further, a hole 24d through which the shaft portion 25a of the male screw member 25 passes is formed in the first plate piece (front plate piece) 24a.

  The first support 21 is disposed between the second plate pieces (side plate pieces) 24b and 24b in the frame 24 and on the first plate piece (front plate piece) 24a side. The first support 21 is obtained by cutting, for example, an aluminum extruded material into an appropriate length, and a support body 21a formed in a substantially U shape so as to receive the water pipe 12a with a core member; And a leg portion 21b extending downward from both sides of the support body 21a. The leg 21b is provided with a side piece 21c that slightly extends laterally from the upper end and the lower end. The leg portion 21b is arranged inside the second plate piece (side plate piece) 24b so that the side pieces 21c and 21c sandwich the second plate piece (side plate piece) 24b of the frame 24 vertically. The first support 21 has a cylindrical portion 21d below the support body 21a, and an inner side of the cylindrical portion 21d is a through hole 21e through which the shaft portion 25a of the male screw member 25 passes. . And the 1st support body 21 is attached to the flame | frame 24 because the leg part 21b is fixed to the 2nd board piece (side board piece) 24b of the flame | frame 24 using the bis | screw 21f.

  The second support 22 is disposed between the second plate pieces (side plate pieces) 24b and 24b in the frame 24 and on the side away from the first plate piece (front plate piece) 24a. The second support 22 has substantially the same structure as the first support 21 and is obtained by cutting, for example, an aluminum extruded material into an appropriate length. The support body 22a and the legs 22b, 22b and a cylindrical portion 22d. Here, the upper part of the support body 22a formed in a substantially U shape is extended toward the first support body 21 side, and the water pipe 12a with a core member (specifically, the water pipe 10). A second restraining piece 22g for restraining the engaging body 14 is provided so that the end portion 10a) does not rise. The leg portion 22b extending downward from both sides of the support body 22a has a second plate piece (side plate piece) such that the side pieces 22c and 22c sandwich the second plate piece (side plate piece) 24b of the frame 24 vertically. By being arranged inside 24b, it is slidable in the extending direction of the second plate piece (side plate piece) 24b. That is, the second support body 22 can be slid in the extending direction of the second plate piece (side plate piece) 24b serving as the guide portion through the leg portion 22b serving as the guided portion. Further, the inner side of the cylindrical portion 22d provided below the support body 22a is a screw hole 22e into which the male screw member 25 is screwed.

  The male screw member 25 includes a shaft portion 25a and a head portion 25b. The shaft portion 25 a of the male screw member 25 passes through the hole 24 d of the frame 24 and the through hole 21 e of the first support 21 and is screwed into the screw hole 22 e of the second support 22. Therefore, the moving means 23 is composed of the male screw member 25 and the screw hole 22e, and moves the second support member 22 closer to the first support member 21 side by rotating the male screw member 25. Can do.

  As shown in FIGS. 6 and 7, the method for forming the connection end 11 of the water pipe 10 using the connection end forming tool 20 is as follows. First, as shown in FIGS. In 10c, the core member 13 is inserted to form the water pipe 12a with the core member, and the main body ring 16 and the split ring 15 are fitted in order on the outer periphery of the water pipe 12a with the core member. The end portion of the water pipe 10 is positioned at the rear portion 10c. At this time, the direction of the main body ring 16 is set so that the inner peripheral surface of the main body ring 16 becomes larger in diameter toward the distal end side of the water pipe 10. Similarly, the direction of the split ring 15 is set to the direction of the split ring 15. The outer peripheral surface has a direction that becomes larger in diameter toward the distal end side of the water pipe 10. The leading end surface 10d of the water pipe 10 is in contact with the first plate piece (front plate piece) 24a (positioning portion 20a) of the frame 24, and the main body ring 16 and the split ring 15 are connected to the first support body 21. And the second support 22 are set on the first and second supports 21 and 22 (specifically, the support bodies 21a and 22a). Thereafter, the male screw member 25 is rotated to move the second support 22 to the first support 21 side. At this time, the leading end surface 10d of the water pipe 12a with the core member comes into contact with the first plate piece (front plate piece) 24a (positioning portion 20a) and the position thereof is maintained. The front end surface 15c serving as an end surface is in contact with the first support 21 and the position thereof is maintained, and the main body ring 16 has a rear end surface 16b serving as an end surface opposite to the split ring 15 side as a second end surface. It is pushed by the support 22 and moves to the split ring 15 side. Thus, the main body ring 16 is fitted into the outer peripheral portion of the split ring 15, and by this fitting, the split ring 15 is reduced in diameter and presses the end portion rear portion 10 c of the water pipe 10, and ends with the core member 13. The part rear part 10c is clamped. In this way, the engagement body 14 composed of the split ring 15 and the main body ring 16 is fixed to the end portion 10a of the water flow pipe 10, and the connection end portion 11 is formed.

  Next, the effect of the connection structure 17 of the water pipe 10 which consists of the above structure, the water pipe apparatus 19, and the connection edge part formation tool 20 is demonstrated. In the connection structure 17, the engagement body 14 constituting the connection end portion 11 of the water conduit 10 is the end portion tip of the end portion 10 a of the water conduit 10 where the in-core portion 1 e is inserted and the water stop member 5 a is in close contact. It is fixed to the end portion 10a by being fitted to the outer peripheral portion of the end portion rear portion 10c behind the portion 10b so as to sandwich the end portion rear portion 10c with the core member 13. Then, the end portion 10a to which the engagement body 14 is fixed, that is, the connection end portion 11 is inserted into the receiving port 1b of the header 1, and the attachment body 6 is inserted into the notch 5f provided in the receiving port 1b. Thus, the water pipe 10 can be easily connected to the header 1 by engaging the attachment body 6 and the engagement body 14. In particular, if the connecting member 11 is formed by inserting the core member 13 into the end portion 10a of the water pipe 10 and fixing the engaging body 14 in advance in a factory or the like in advance, The connection work can be done neatly. Since the core member 13 and the engagement body 14 sandwich the end portion rear portion 10c, the engagement body 14 is fixed to the end portion 10a. Therefore, the engagement member 14 is fixed to the end portion 10a. It is possible to avoid deformation of the end portion tip portion 10b with which the water member 5a is in close contact. In addition, when the connection end 11 is inserted into the receiving port 1b of the header 1, the in-core portion 1e of the header 1 is inserted into the end portion tip portion 10b, and the in-core portion 1e is connected to the end portion tip portion 10b. Prevent deformation due to crushing. For this reason, the water stop by the water stop member 5a between the header 1 and the water flow pipe 10 can be ensured.

  Further, when the end portion 10a (specifically, the connecting end portion 11) of the water pipe 10 is inserted into the receiving port 1b of the header 1, the front end surface 14b of the engaging body 14 is positioned on the receiving port 1b. Positioning so as not to move forward further when hitting the surface 1d restricts the insertion length of the end portion 10a (specifically, the connecting end portion 11) into the receiving port 1b. On the other hand, the end portion 10a is prevented from coming off from the receiving port 1b by the locking means 1c (specifically, the attachment body 6) that engages with the engagement body 14. For this reason, the position of the edge part 10a and by extension, the edge part front-end | tip part 10b is pinpointed, and the edge part front-end | tip part 10b can be correctly arrange | positioned in the position with the water stop member 5a.

  Further, the water stop member 5 a is fitted into the large diameter portion 2 d of the header body 2 in the receiving port 1 b. Here, the header body 2 is made of metal, and the auxiliary joint 5 constituting the mouth side of the receiving port 1b is made of nylon. Thus, the water stop member 5a is disposed not on the nylon auxiliary joint 5 side but on the metal header body 2 side, thereby avoiding a decrease in the tightening margin of the water stop member 5a due to nylon swelling. Can do.

  Further, in the engagement body 14, the axial length of the split ring 15 is formed shorter than the axial length of the main body ring 16, and due to the difference in length, the tolerance of each component or the water pipe 10 The amount of movement of the split ring 15 moving rearward together with the water pipe 10 can be absorbed by the internal water pressure. Therefore, it is possible to prevent the split ring 15 from hitting the rear attachment body 6 or to reduce the contact with the attachment body 6. For this reason, it is possible to prevent the split ring 15 from hitting the attachment body 6 and being damaged. In the illustrated embodiment, the space 14a is secured behind the split ring 15 by positioning the rear end surface 15d of the split ring 15 in front of the rear end surface 16b of the main body ring 16 (FIGS. 2 and 2). 4). And by this space, the movement amount which the split ring 15 moves to the back with the water flow pipe 10 by the water pressure inside the water flow pipe 10 can be absorbed. In order to make it difficult for the split ring 15 to move backward, the outer peripheral surface of the split ring 15 and / or the inner peripheral surface of the main body ring 16 where the split ring 15 and the main body ring 16 are in contact are scratched. Then, the roughness of the outer peripheral surface or the inner peripheral surface may be increased.

  Further, in the water pipe device 19, the protective cap 18 is attached to the connection end portion 11 of the water pipe 10 before being connected to the header 1, so that the end portion of the water pipe 10 to which the water stop member 5 a is in close contact. The partial front end portion 10b and the front surface of the connection end portion 11 (that is, the front end surface 10d of the water flow pipe 10) are protected. Here, since the peripheral surface protection part 18a in the protective cap 18 is formed so that the rear end face 18c abuts on the engagement body 14, the water pipe 10 to which the protective cap 18 is attached to the connection end part 11 When the protective cap 18 is inserted into the sheath tube from the side, the engagement body 14 located behind the protective cap 18 takes charge of the load received by the protective cap 18 being pushed forward in the sheath tube. Therefore, this load does not act on the front surface of the connection end portion 11 via the protective cap 18, and the front surface is protected.

  Further, the outer peripheral surface protection portion 18a of the protective cap 18 has an outer diameter substantially the same (including the same) as the outer diameter of the engaging body 14 (that is, the outer diameter of the main body ring 16) or larger than the outer diameter of the engaging body 14. Since the water pipe 10 having the protective cap 18 attached to the connection end portion 11 is inserted into the sheath pipe from the protective cap 18 side, the front end face 14b of the engaging body 14 (that is, the main body link 16 is formed). And the front end surfaces 16a and 15c) of the split ring 15 do not hit the inner surface of the sheath tube. Therefore, the engagement body 14 can be protected from hitting the inner surface of the sheath tube. Further, since the front protective part 18b of the protective cap 18 is formed in a tapered shape, when the water pipe 10 having the protective cap 18 attached to the connection end part 11 is inserted into the sheath pipe from the protective cap 18 side. The load received by the protective cap 18 being pushed forward in the sheath can be reduced. The protective cap 18 is removed from the connection end 11 when the water conduit 10 is connected to the header 1.

  Further, in the connection end forming tool 20, the water pipe 12 a with core member is positioned by the positioning portion 20 a provided in the connection end forming tool 20. On the other hand, the split ring 15 is positioned by a first support 21 that abuts against a front end surface 15c that is an end surface on one side thereof. Therefore, in the end portion 10 a of the water flow pipe 10, the end where the water blocking member 5 a is in close contact with the outer peripheral surface or the inner peripheral surface (the outer peripheral surface in the illustrated embodiment) that is located in front of the split ring 15. The length of the portion portion tip portion 10b can be maintained at a predetermined length. Then, by rotating the male screw member 25, the second support 22 that contacts the rear end surface 16 b of the main body ring 16 is moved toward the first support 21, and the main body ring 16 is separated from the split ring 15. It can be fitted to the outer periphery. Thus, by rotating the male screw member 25, the connection end portion 11 of the water flow pipe 10 can be easily formed.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the connector may not be the header 1 but may be a joint other than the header 1 or a faucet device.

  Even if the engaging body 14 is not composed of the split ring 15 and the main body ring 16, as shown in FIGS. 11 to 17, the first divided body 26 obtained by dividing the cylindrical shape at a position in contact with the inner diameter. And the second divided body 27. Here, the 1st division body 26 is formed in the cross-section C-shape, and the 1st fitting part 26a is provided in the edge in the each end in the side which mutually separated. The first fitting portion 26a is an inclined portion 26b that is formed so as to be inclined so as to escape inward from an intermediate position in the axial direction to one end. The second divided body 27 is formed in a substantially crescent shape, and at each end thereof, a second fitting portion 27a that fits the first fitting portion 26a is provided on the opposite side. In order to form the connection end 11 using the engagement body 14, the first divided body 26 is fitted into the outer peripheral portion of the water pipe 12a with a core member, and the first divided body 26 is connected to the end of the water pipe 10. The rear end portion 10c is positioned behind the partial front end portion 10b. At this time, the direction of the first divided body 26 is set so that the inclined portion 26b is on the side opposite to the tip direction side of the water conduit 10. Then, the second divided body 27 is slid from the inclined portion 26 b side so that the second fitting portion 27 a is fitted to the first fitting portion 26 a of the first divided body 26. At this time, the inclined portion 26 b of the first divided body 26 is pushed by the second fitting portion 27 a of the second divided body 27, so that the first divided body 26 is reduced in diameter and the rear end portion 10 c of the water pipe 10. Press. Thus, the engagement body 14 is fixed to the end portion 10 a of the water conduit 10, and the connection end 11 is formed.

  As shown in FIGS. 18 and 19, the engaging body 14 includes an engaging body main body 28 having a cylindrical slit 28a, and a screw 29 for reducing the diameter of the engaging body main body 28 so as to narrow the slit 28a. May be configured. In order to form the connection end 11 using the engagement body 14, the engagement body main body 28 is fitted into the outer peripheral portion of the water pipe 12 a with a core member, and the engagement body main body 28 is connected to the end of the end portion of the water flow pipe 10. The rear end portion 10c is positioned behind the portion 10b. Then, by screwing the screw 29 into the engaging body main body 28 (specifically, the screw hole 28b provided in the engaging body main body 28), the diameter of the engaging body main body 28 is reduced, and the rear portion of the end portion of the water conduit 10 is rearranged. 10c is pressed. Thus, the engagement body 14 is fixed to the end portion 10 a of the water conduit 10, and the connection end 11 is formed.

  Further, the locking means 1c (attachment 6) may be attached to the receptacle 1b in advance even if it is not attached to the receptacle 1b after the connection end 11 of the water pipe 10 is inserted into the receptacle 1b. It may be worn. That is, for example, the locking means 1c (attachment body 6) is connected to the receiving port 1b to which the locking means 1c (attachment body 6) is attached by pushing the locking means 1c (attachment body 6) at the tip of the engagement body 14. The end portion 11 can be pushed into the receiving port 1b, and thereafter, the locking means 1c (attachment body 6) is returned to a position where it engages with the engagement body 14 by elasticity. Also good. Furthermore, even if the latching means 1c is not attached to the receptacle 1b, it may consist of latching parts, such as a latching claw, which protruded inward from the receptacle 1b, for example. .

  In addition, a pair of notches 5f and 5f into which the locking means 1c (attachment body 6) is inserted are formed in the receiving port 1b of the header 1, but instead of the notches 5f and 5f, As shown in FIG. 20, a pair of insertion holes 5h and 5h may be formed so as to communicate with the opening (specifically, the recess 5e) of the receiving port 1b. At this time, in addition to the connecting portions 5g and 5g between the pair of insertion holes 5h and 5h, the receiving port 1b is provided with other connecting portions 5i and 5i outside the pair of insertion holes 5h and 5h. . The connecting portion 5g is formed with, for example, concave engaged portions 5j and 5j. Here, the corresponding locking means 1c (attachment body 6) is formed in a substantially U-shape, and the two opposing pieces 6c, 6c of the substantially U-shape are inserted into the insertion holes 5h, 5h. So that it extends almost straight. Further, for example, a convex engaging portion 6d that engages with the engaged portion 5j is formed at the base end portion of the two pieces 6c, 6c. According to this structure, the connection portion 5g, 5g and the other connection portions 5i, 5i are provided in the reception port 1b, and the strength of the reception port 1b is increased. Accordingly, it is possible to easily withstand the force in the direction in which the connection end 11 is pulled out, which acts due to the water pressure in the water conduit 10. Further, since the two pieces 6c and 6c in the locking means 1c (attachment body 6) are inserted into the insertion holes 5h and 5h, they do not spread outward, and the connection end 11 is a predetermined position of the receiving port 1b. In a state where the engaging body 14 is inserted into the insertion holes 5h and 5h without being inserted, the two pieces 6c and 6c cannot be inserted into the insertion holes 5h and 5h. Therefore, by inserting the two pieces 6c and 6c into the insertion holes 5h and 5h and attaching the locking means 1c (attachment body 6) to the receiving port 1b, the connecting end portion 11 has a predetermined length in the receiving port 1b. It is guaranteed that it is inserted.

  Further, in the connection end forming tool 20, the moving means 23 may be one using a mechanism such as a cam or a link, for example, without using the male screw member 25.

  Further, the description of the connection of the water pipe to the receiving port 1a on the hot water supply side is omitted, but the connection of the water pipe 10 to the receiving port 1b is also performed for the connection of the water pipe to the receiving port 1a. The same connection structure as that can be adopted.

  Further, when the locking means 1c (attachment body 6) and the engagement body 14 are engaged, the locking means 1c (attachment body 6) and the engagement body 14 are directly engaged (that is, via an inclusion). In addition, it may be engaged through an intervening material such as a spacer.

  21 and 22 show a case where the joint 41 as a connection tool is constituted by a joint main body 42, a case 43, and a heat insulating member 44. The connection end 11, the water stop member 5a, and the locking means are shown in FIGS. About 1c (attachment body 6), since it is the same as that of embodiment shown in FIGS. 1-5, the description is abbreviate | omitted. The joint body 42 is accommodated in the case 43 while being covered with the heat insulating member 44. However, the heat insulating member 44 may not be provided. The joint body 42 is provided with flanges 42a and 42a, and the joint body 42 is fixed to the case 43 by a fixing tool 45 such as a screw through the flange 42a. The joint body 42 has an elbow shape bent at a right angle. The one end portion 42 b of the joint body 42 and the cylindrical portion 43 a formed so as to protrude from the case 43 constitute a receiving port 41 a. Therefore, the water stop member 5 a is accommodated in the end portion 42 b of the joint body 42, and the engaging body 14 in the connection end portion 11 is accommodated in the cylindrical portion 43 a of the case 43. And the latching means 1c (attachment body 6) is inserted in the notch 43b formed in the cylinder part 43a. In this embodiment, a gap S is formed between the end surface of the end portion 42 b of the joint body 42 and the cylindrical portion 43 a side of the case 43. In addition, the code | symbol 41b is a cylindrical incore part formed integrally with the coupling 41 (specifically, the coupling main body 42) and inserted into the end portion tip portion 10b of the water flow pipe 10. Moreover, although illustration is abbreviate | omitted, a water faucet is connected to the other edge part 42c of the coupling main body 42, for example.

  Further, the water stop member 5a is in close contact with the outer peripheral surface of the end portion tip end portion 10b of the water pipe 10, but as shown in FIG. 23, it may be in close contact with the inner peripheral surface of the end portion tip end portion 10b. Good. Here, a ring-shaped groove 1g is formed on the outer periphery of the in-core portion 1e provided in the receiving port 1b. The water blocking member 5a is fitted in the groove 1g. Similarly, in the example shown in FIG. 21, although not shown, a ring-shaped groove is formed on the outer periphery of the in-core portion 41b, and the water-stopping member 5a is fitted into the groove so that the water-stopping member 5a passes through the water pipe. You may make it closely_contact | adhere to the internal peripheral surface of 10 edge part part front-end | tip parts 10b.

  Further, as described above, when the water stop member 5a is in close contact with the inner peripheral surface of the end portion tip portion 10b of the water conduit 10, as shown in FIGS. 24 and 25, the receiving port 51a of the joint 51 is provided. A metal ring member 52 may be fitted to the outer peripheral portion of the end portion tip end portion 10b into which the in-core portion 51b provided in is inserted. As a result, the metal ring member 52 receives the end portion tip portion 10b with which the water stop member 5a is in close contact with the water pressure. In this way, the diameter of the end portion tip portion 10b due to water pressure can be prevented by the metal ring member 52, and therefore, the joint 51 as a connection tool can be easily made of synthetic resin. By the way, in this embodiment, the attachment body 6 serving as the locking means 1c is inserted into the insertion holes 51c and 51c provided in the receiving port 51a, as in the embodiment shown in FIG. You may insert in a notch like other embodiment. Further, in this embodiment, the engaging body 14 is positioned so as not to move forward any further by way of the ring member 52 that contacts the inner surface 51d of the receiving port 51a. In the same manner as described above, a positioning surface may be provided at an intermediate position of the receiving port 51a, and the front end surface 14b of the engagement body 14 may contact the positioning surface so that the engagement body 14 is not further moved forward. Absent. Further, in the water pipe device, a protective cap may be attached to the connection end 11 in a state where the ring member 52 is attached, but in addition to the connection end 11 in a state where the ring member 52 is removed, You may make it attach a protective cap.

It is sectional drawing of one embodiment of this invention. It is a principal part enlarged view in FIG. It is sectional drawing by the AA line in FIG. It is sectional drawing which shows the state before connecting a water pipe to a header. It is the front view which fractured | ruptured a part of water pipe apparatus. It is a top view which shows the state which set the water flow pipe to the connection end part formation tool. Similarly, it is a longitudinal sectional view. It is sectional drawing by the BB line in FIG. It is sectional drawing by CC line in FIG. It is a longitudinal cross-sectional view which shows the state which rotated the external thread member and moved the 2nd support body. It is a front view of a connection end part showing the 1st modification of this invention. Similarly, it is sectional drawing by the DD line in FIG. Similarly, it is a front view of a 1st division body. Similarly, it is a left side view of the first divided body. Similarly, it is a top view of a 1st division body. Similarly, it is a front view of a 2nd division body. Similarly, it is sectional drawing by the EE line in FIG. It is a front view of a connection end part showing the 2nd modification of this invention. Similarly, it is sectional drawing by the FF line. FIG. 9 is a view corresponding to FIG. 3 and showing a third modification of the present invention. It is the front view which fractured | ruptured a part which shows the 4th modification of this invention. Similarly, it is the side view which fractured | ruptured the case and the heat insulation member. FIG. 10 is a view corresponding to FIG. 2 and showing a fifth modification of the present invention. FIG. 10 is a view corresponding to FIG. 2 and showing a sixth modification of the present invention. Similarly, it is a figure corresponding to FIG. It is sectional drawing which shows the conventional connection structure.

Explanation of symbols

1 Header (connector)
1b Receiving port 1c Locking means 1d Positioning surface 1e In-core part 5a Water stop member 6 Attachment body (locking means)
DESCRIPTION OF SYMBOLS 10 Water pipe 10a End part 10b End part front-end | tip 10c End part rear part 10d End surface 11 Connection end part 12 Water-flow pipe body 12a Water pipe with core member 13 Core member 14 Engagement body 14b Front end face 15 Split ring 15a Cutting part 15d Rear end surface 16 Body ring 16b Rear end surface 17 Connection structure 18 Protective cap 18a Circumferential surface protection portion 18b Front surface protection portion 18c Rear end surface 19 Water pipe device 20 Connection end portion forming tool 20a Positioning portion 21 First support 22 Second support Support body 23 Moving means 41 Joint (connector)
41a Receptacle 41b In-core part 51 Joint (connector)
51a Receiving port 51b In-core part 52 Ring member

Claims (23)

In order to connect a water pipe made of synthetic resin to a connection tool provided with a cylindrical in-core part, a connection end inserted into a receiving port of the connection tool,
An end portion of the water pipe;
A cylindrical core member inserted into the end portion;
An engagement body engageable with a locking means provided at the receiving port so that the end portion is prevented from coming off from the receiving port;
The core member is inserted into the rear end portion of the end portion behind the front end portion of the end portion for inserting the in-core portion into close contact with the outer peripheral surface or the inner peripheral surface. And
The engaging body is a connecting end portion of a water pipe that is fitted into an outer peripheral portion of the rear portion of the end portion so as to sandwich the rear portion of the end portion with the core member. The engagement body has a split portion, is formed in a C-shaped cross section and is fitted into the outer peripheral portion of the rear end portion,
A cylindrical main body ring that is fitted into the outer peripheral portion of the split ring and reduces the diameter of the split ring so as to press-contact the rear portion of the end portion and maintains the reduced diameter state. The connecting end portion of the water pipe according to claim 1.   The length of the split ring in the axial direction is a connecting end portion of the water pipe according to claim 2, wherein the length of the split ring is shorter than the length in the axial direction of the main body ring. The end portion tip portion is for the water stop member to be in intimate contact with the inner peripheral surface by inserting the in-core portion,
The connecting end portion of the water pipe according to any one of claims 1 to 3, wherein a metal ring member is fitted on an outer peripheral portion of the end portion of the end portion. In order to connect a water pipe made of synthetic resin to a connector provided with a cylindrical in-core part, the pipe has an end part of the water pipe and a cylindrical core member inserted into the end part. The connecting end inserted into the receptacle of the connecting tool,
An engaging body that is engageable with a locking means provided at the receiving port so that the end portion is prevented from coming off from the receiving port,
The core member is inserted into the rear end portion of the end portion behind the front end portion of the end portion for inserting the in-core portion into close contact with the outer peripheral surface or the inner peripheral surface. And
The engaging body is fitted to the outer peripheral part of the rear part of the end part so as to sandwich the rear part of the end part with the core member.
A split ring that has a cut portion and is formed in a C-shaped cross section, and is fitted into the outer peripheral portion of the rear end portion;
A cylindrical main body ring that is fitted into the outer peripheral portion of the split ring and reduces the diameter of the split ring so as to press-contact the rear portion of the end portion and maintains the reduced diameter state. An engaging body for connecting a water pipe.   The engagement body for water pipe connection according to claim 5, wherein the axial length of the split ring is shorter than the axial length of the main body ring. In order to connect a water pipe made of synthetic resin to a connector provided with a cylindrical in-core portion, it is possible to engage with an end portion of the water pipe and a locking means provided at a receiving port of the connector. Comprising an engagement body and constituting a connection end inserted into the receiving port,
A cylindrical core member,
In the end portion, the in-core portion is inserted and inserted into the rear end portion of the end portion behind the end portion tip portion for bringing the water stop member into close contact with the outer peripheral surface or the inner peripheral surface,
A core member for connecting a water pipe that sandwiches the rear portion of the end portion with an engaging body fitted into the outer peripheral portion of the rear portion of the end portion.   A water conduit having the connection end according to any one of claims 1 to 3 at one end or both ends of the water conduit.   A water conduit comprising the connection end according to claim 4 at one or both ends of the water conduit. A connection structure between a water pipe and a connector provided with the connection end according to any one of claims 1 to 4,
By the engagement of the engagement body and the locking means, the water pipe is connected to the connection tool,
A water pipe connection structure in which water is stopped by the water stop member that is in close contact with the end portion tip portion into which the in-core portion is inserted and the receiving port.   The water conduit according to claim 10, wherein the locking means comprises an attachment body attached to the receiving opening so as to cross the opening of the receiving opening so as to engage with the engaging body. Connection structure.   The water pipe connecting structure according to claim 10 or 11, wherein the water stop member is provided in advance in the receiving port.   13. The positioning device according to claim 10, wherein the receiving port is provided with a positioning surface that positions the engaging body so that the engaging body does not advance further when the front end surface of the engaging body hits. The water pipe connection structure as described in the section. A water pipe device comprising the water pipe body according to claim 8 and a protective cap attached to the connection end,
The protective cap has a peripheral surface protecting portion that protects the outer peripheral surface of the end portion of the end portion so as to cover it, and a front surface protecting portion that covers and protects the front surface of the connecting end portion. .   The water pipe device according to claim 14, wherein the peripheral surface protection portion is formed such that a rear end surface thereof abuts on the engagement body.   The water pipe device according to claim 14 or 15, wherein an outer diameter of the peripheral surface protection portion is formed to be substantially the same as or larger than an outer diameter of the engaging body.   The water pipe device according to any one of claims 14 to 16, wherein the front protection part is formed in a tapered shape. An end portion of a water pipe made of synthetic resin connected to a connector provided with a cylindrical in-core portion;
In the end portion, the in-core portion is inserted and inserted into the rear end portion of the end portion behind the end portion end portion for bringing the water stop member into close contact with the outer peripheral surface or the inner peripheral surface. A core member;
An engagement body that is fitted to an outer peripheral portion of the rear portion of the end portion so as to sandwich the rear portion of the end portion with the core member and is engageable with a locking means provided at a receiving port of the connector. Equipped, attached to the connection end,
A protective cap,
A protective cap for a water pipe having a peripheral surface protection portion that protects the outer peripheral surface of the end portion of the end portion and covers the front surface of the connection end portion.   The water pipe protective cap according to claim 18, wherein the peripheral surface protection portion is formed such that a rear end surface thereof is in contact with the engagement body.   20. The protective cap for a water pipe according to claim 18, wherein the peripheral surface protection portion has an outer diameter that is substantially the same as or larger than an outer diameter of the engaging body.   21. The water pipe protective cap according to any one of claims 18 to 20, wherein the front protection part is formed in a tapered shape. A connection end forming tool for forming a connection end of a water pipe according to claim 2 or 3,
In the water pipe with a core member formed by inserting the core member into the water pipe, the water pipe with the core member is in contact with one end face of the split ring fitted into the outer peripheral portion of the rear portion of the end portion. A first support body that supports the first ring and the other side of the split ring abuts against an end surface of the main body ring fitted to the outer peripheral portion of the water pipe with core member on the opposite side to the split ring side. A second support for supporting the water pipe with the core member, and the first support for moving the main body ring relatively to the split ring side and fitting it into the outer periphery of the split ring; A tool for forming a connection end of a water pipe, comprising a moving means for moving one or both of the first support and the second support so that the second support is brought close to the second support.   The connection end forming tool for a water pipe according to claim 22, further comprising a positioning portion that contacts the tip surface of the water pipe with the core member and positions the water pipe with the core member.

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