JP5226492B2 - Water pipe connecting end forming tool, water pipe connecting end forming apparatus, water pipe connecting end forming apparatus body, and water connecting pipe with connection end forming apparatus - Google Patents

Description

  The present invention provides a connection end forming tool for a water pipe, a connection end forming device for a water pipe, a connection end forming device body for a water pipe, and a connection end formation for forming a connection end of the water pipe to a joint. It relates to a water pipe with a device.

  Conventionally, when connecting a water flow pipe to a joint, a connection end portion of the water flow pipe having an engagement body that engages with an engagement means provided in the joint has been known (see, for example, Patent Document 1). As shown in FIG. 13, the connection end portion 13 is more than the end portion front portion 11 b in which the water stop member (not shown) such as an O-ring is in close contact with the end portion 11 a of the water conduit 11. A cylindrical engagement body 12 is fitted on the outside of the rear end portion rear portion 11c.

JP 2007-247892 A

  However, in order to form the connection end 13 of the water pipe 11, the engaging body 12 must be accurately arranged at a predetermined position in the end portion 11a of the water pipe 11, and the arrangement is very troublesome. there were.

  The present invention has been made in order to solve the above-described conventional drawbacks. The object of the present invention is to enable the engagement body to be easily disposed at a predetermined position of the end portion of the water pipe. An object of the present invention is to provide a water pipe connection end forming tool, a water pipe connection end forming device, a water pipe connection end forming device body, and a water pipe with a connection end forming device.

In order to achieve the above object, a water pipe connecting end forming tool, a water pipe connecting end forming device, a water pipe connecting end forming device body, and a water pipe with a connecting end forming device according to the present invention are provided. The following configuration. That is,
According to the first aspect of the present invention, the connecting end forming tool of the water pipe is provided with an elastically deformable locking claw extending obliquely inwardly inside the cylindrical engaging body main body. Is fitted on the outside of the end portion of the water pipe so that the locking claw locks the water pipe in a direction facing the tip side of the end portion. This is a connection end forming tool. The connection end forming tool includes a water pipe insertion port into which an end portion of the water pipe is inserted, a water pipe abutting portion where the end portion of the inserted water pipe abuts, and a tip of the engaging body. An engagement body contact portion that contacts the engagement body contact portion in a direction in which the elastically deformable locking claw faces the engagement body contact portion side. By inserting the end portion of the water pipe into the engaging body and the water pipe insertion port, the locking claw locks the water pipe.

According to this connection end forming tool, the engaging body is in a state in which the distal end of the engaging body is in contact with the engaging body abutting portion, that is, the engaging claw that is elastically deformable faces the engaging body abutting portion side. In this state, the end portion of the water pipe is inserted into the engaging body and the water pipe insertion port in a state of being brought into contact with the engaging body abutting portion, and the end portion is abutted against the water pipe abutting portion . In this way, the arrangement position of the engaging body with respect to the end portion of the water pipe is uniquely determined, and the engaging body is fitted into the predetermined position of the end portion. And when connecting the connection end formed by fitting the engaging body to the end portion of the water pipe to the joint, the connection end is extracted from the connection end forming tool and then connected to the joint. . In addition, when the water pipe is a water pipe with an in-core, the end portion of the water pipe includes the in-core, and when the tip of the in-core projects, the in-core hits the water pipe abutting portion. become.

  Further, like the connection end forming tool of the water pipe according to the invention described in claim 2, in the connection end forming tool according to claim 1, the connection end forming tool is transparent or translucent. It may be. Thereby, when the end part of the water pipe is inserted into the water pipe insertion port, it can be visually confirmed whether or not the end part is in contact with the water pipe abutting part.

  Moreover, in the connection end part forming tool of Claim 1 or 2, like the connection end part forming tool of the water pipe which concerns on invention of Claim 3, the engagement body insertion port into which the said engagement body is inserted is provided. Provided, and the rear end of the engagement body insertion port may be the engagement body contact portion.

  Further, in the connection end portion forming tool according to claim 3, like the connection end forming tool of the water pipe according to the invention according to claim 4, the engagement body inserted into the engagement body insertion port is pulled out. You may provide the holding | maintenance part hold | maintained so that it may not exist.

  Further, a water pipe connecting end forming device according to a fifth aspect of the present invention comprises the connecting end forming tool according to any one of the first to fourth aspects and the engaging body.

  Further, a connection end forming device for a water pipe according to the invention described in claim 6 comprises the connection end forming tool according to claim 3 or 4 and the engagement body, and the engagement body is the connection end. It is inserted into the engaging body insertion port of the part forming tool.

  Moreover, the connection end part forming apparatus body of the water pipe which concerns on invention of Claim 7 consists of the connection end part forming apparatus of Claim 6, and the in-core inserted in the edge part part of the said water pipe. The in-core is inserted into the water pipe insertion port of the connection end forming tool.

  Moreover, the water pipe with a connection end part forming device according to the invention of claim 8 comprises the connection end part forming device according to claim 6 and the water pipe, and the end portion of the water pipe is The connection end forming tool is inserted into the water pipe insertion port, and the engagement body is fitted to the outside of the end portion.

  According to the water pipe connecting end forming tool, the water pipe connecting end forming device, the water pipe connecting end forming device body, and the water pipe with the connecting end forming device according to the present invention, The engagement body and the end portion of the water pipe inserted into the water pipe insertion port are brought into contact with the water pipe abutting portion, thereby engaging the engagement body and the predetermined portion of the end portion of the water pipe. The coalescence can be easily arranged.

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

  1 to 8 show an embodiment of the present invention. Reference numeral 1 in the figure denotes a water pipe (in particular, a flexible synthetic resin water pipe) as a piping material, and is made of, for example, a synthetic resin pipe such as cross-linked polyethylene or polybutene. Reference numeral 2 denotes an engaging body that is fitted to the outside of the end portion 1 a of the water flow pipe 1. Reference numeral 3 denotes a joint to which the water pipe 1 is connected. Reference numeral 6 denotes a connection end forming tool for forming the connection end 4 of the water pipe 1 to the joint 3. Reference numeral 7 denotes a connection end forming device for the water pipe 1, which includes the connection end forming tool 6 and the engagement body 2.

  Here, the engaging body 2 is provided with an elastically deformable locking claw 2c extending obliquely inwardly inside the tubular engaging body main body 2a. Specifically, the engagement body 2 includes the engagement body main body 2a and a retaining ring 2b held inside the engagement body main body 2a. The retaining ring 2 b is provided with a plurality of the locking claws 2 c that extend inward and lock the water pipe 1. The engaging body 2 includes a plurality of retaining rings 2b (three in the illustrated embodiment). Further, the engagement body 2 includes an end ring 2d that is inserted inside the engagement body main body 2a and is positioned at each end of the engagement body main body 2a, and intermediate rings 2e and 2e that are positioned in the middle. Therefore, the retaining ring 2b is sandwiched and held between the one end ring 2d and the intermediate ring 2e and between the intermediate rings 2e and 2e.

  The connection end 4 is an end of the water pipe 1 that is inserted into the receiving port 3 a of the joint 3 in order to connect the water pipe 1 to the joint 3. The connection end portion 4 includes an end portion 1a of the water conduit 1 and the engagement body 2 fitted on the outer side of the end portion 1a. However, when the water pipe 1 is a water pipe with an in-core 5 as in the illustrated embodiment, the end portion 1 a of the water pipe 1 includes the in-core 5. In addition, the engaging body 2 is provided at the end portion rear portion 1c behind the end portion front portion 1b for the water stop member 3b to be in close contact with the outer peripheral surface of the end portion 1a of the water conduit 1.

The connection end forming tool 6 locks the engaging body 2 on the outside of the end portion 1a of the water pipe 1 and the water pipe 1 so that the locking claw 2c faces the distal end side of the end portion 1a. It is a forming tool that forms the connection end 4 to the joint 3 by fitting. The connection end forming tool 6 includes a water pipe insertion port 6a into which the end part 1a of the water pipe 1 is inserted, a water pipe abutting part 6b against which the end part 1a of the inserted water pipe 1 abuts, An engaging body abutting portion 6c against which the tip of the engaging body 2 abuts , and the engaging body abutting portion 2c of the engaging body 2 in a direction in which the elastically deformable locking claw 2c faces the engaging body abutting portion 6c side. The locking claw 2c locks the water pipe 1 by inserting the end portion 1a of the water pipe 1 into the engaging body 2 and the water pipe insertion port 6a in a state where the water pipe 1 is in contact with the water pipe 6c. Specifically, the connection end forming tool 6 includes an engagement body insertion port 6d into which the engagement body 2 is inserted, and the rear end of the engagement body insertion port 6d serves as the engagement body contact portion 6c. And the connection end part formation tool 6 is provided with the holding | maintenance part 6e hold | maintained so that the engagement body 2 inserted in the engagement body insertion port 6d may not come out.

  Specifically, the connection end forming tool 6 is made of, for example, a synthetic resin, and has a cylindrical shape with the inside serving as the water pipe insertion port 6a. And the back end of the water pipe insertion port 6a is the water pipe abutting portion 6b. Further, the mouth side of the water pipe insertion port 6a is formed larger in diameter than the small diameter portion 6f on the back side, and serves as the engagement body insertion port 6d. That is, a part of the water pipe insertion port 6a on the side opposite to the water pipe abutting portion 6b also serves as the engagement body insertion port 6d. The back end of the engagement body insertion port 6d, that is, the step portion that moves from the engagement body insertion port 6d to the small diameter portion 6f of the water pipe insertion port 6a is the engagement body contact portion 6c. Therefore, the distance between the water pipe abutting portion 6b and the engaging member abutting portion 6c in the axial direction of the connection end forming tool 6 is made to coincide with the length dimension of the front end portion 1b of the water pipe 1. Set to.

  Here, the engagement body insertion port 6d has an inner diameter dimension in which the engagement body 2 is inserted in a press-fit manner so that the inner peripheral surface of the engagement body insertion port 6d does not come out of the engagement body 2. The holding portion 6e to be held becomes. That is, the engagement body 2 is held in the engagement body insertion port 6d by friction between the inner peripheral surface of the engagement body insertion port 6d and the outer periphery surface of the engagement body 2. In the illustrated embodiment, the engaging body 2 is inserted into the engaging body insertion port 6d so that a part of the engaging body 2 protrudes outward from the engaging body insertion port 6d. You may insert in the engaging body insertion port 6d so that it may accommodate in the insertion port 6d.

  Further, the connection end forming tool 6 has a through hole 6g penetrating in the axial direction of the connection end forming tool 6 so that a part of the rear end of the water pipe insertion port 6a remains as a water pipe abutting part 6b. Furthermore, a notch 6h penetrating to the side so as to communicate with the through hole 6g is opened at the portion 6b of the water pipe abutting portion. Therefore, the through hole 6g and the notch 6h serve as a confirmation window 6i for visually confirming whether the end portion 1a of the water pipe 1 is in contact with the water pipe abutting portion 6b.

  FIG. 4 shows a state before the engagement body 2 is assembled to the connection end forming tool 6 in the connection end forming apparatus 7 (that is, a state where the connection step forming tool 6 and the engagement body 2 are separated). 5 shows a connection end forming device 7 in a state in which the engagement body 2 is assembled to the connection end forming tool 6 (that is, the connection in which the engagement body 2 is inserted into the engagement body insertion port 6d of the connection end forming tool 6). An end forming device 7) and a water conduit 1 inserted into the connecting end forming device 7 are shown. FIG. 6 shows a water conduit 8 with a connection end forming device in which the water conduit 1 is inserted into the connection end forming device 7. That is, the water pipe 8 with the connection end forming device includes the connection end forming device 7 and the water pipe 1, and the end portion 1 a of the water pipe 1 is connected to the connection end forming device 6 in the connection end forming device 7. Is inserted into the water pipe insertion port 6a, and the engagement body 2 is fitted to the outside of the end portion 1a. That is, the connection end 4 to the joint 3 is formed in the connection end forming tool 6. 7 shows a state in which the water pipe 1 is extracted from the connection end forming tool 6 in the water pipe 8 with the connection end forming device, and the water pipe 1 has the engaging body 2 at the end portion 1a. The connection end 4 is formed by fitting. Further, FIG. 8 shows a state in which the connection end 4 of the water conduit 1 is inserted into the receiving port 3 a of the joint 3. Here, the water stop member 3b made of packing such as O-ring is in close contact with the end portion front portion 1b of the end portion 1a of the water flow tube 1 before the engagement body 2, and the joint 3 and the water flow tube 1 are in close contact with each other. Stop water between. Then, behind the engagement body 2, a retaining member 3 c made of a pin or the like as a locking means is attached to the receiving port 3 a in a direction orthogonal to the axis of the water pipe 1. The stopper 3c locks the engaging body 2 (specifically, the rear end of the engaging body 2), thereby preventing the water conduit 1 from coming off from the joint 3.

Next, the function and effect of the connection end forming tool 6 having the above configuration will be described. According to the connection end forming tool 6, the engaging claw 2c that can be elastically deformed is engaged with the engaging body 2 in a state in which the front end of the engaging body 2 is in contact with the engaging body abutting portion 6c. The end portion 1a of the water conduit 1 is inserted into the engaging body 2 and the water conduit insertion port 6a in a state where the end portion 1a is in contact with the engaging member abutting portion 6c in the direction facing the portion 6c. The part 1a is abutted against the water pipe abutting part 6b (see FIG. 6). In this way, the arrangement position of the engagement body 2 with respect to the end portion 1a of the water conduit 1 is uniquely determined, and the engagement body 2 is fitted into a predetermined position of the end portion 1a. That is, the end portion 1a of the water pipe 1 inserted into the engagement body 2 and the water pipe insertion port 6a is brought into contact with the water pipe abutting portion 6b by bringing the tip of the engagement body 2 into contact with the engagement body contact portion 6c. By applying, the engaging body 2 can be easily disposed at a predetermined position of the end portion 1a of the water conduit 1. And when connecting the connection end 4 formed by fitting the engagement body 2 to the end portion 1 a of the water conduit 1 to the joint 3, the connection end 4 is connected to the connection end forming tool 6. It is extracted and connected to the joint 3 (see FIGS. 7 and 8). As described above, the end portion 1a of the water pipe 1 includes the in-core 5, and particularly when the tip of the in-core 5 protrudes as in the illustrated embodiment, the in-core 5 hits the water pipe. It will hit the part 6b.

  Further, the connection end forming tool 6 is provided with a confirmation window 6i, and when the end portion 1a of the water pipe 1 is inserted into the water pipe insertion port 6a by the confirmation window 6i, the end portion 1a thereof. It is possible to visually confirm whether or not is hitting the water pipe hitting portion 6b. Thereby, the engaging body 2 can be reliably fitted in the predetermined position of the edge part 1a of the water pipe 1. FIG.

  Further, in the connection end forming device 7, the engagement body 2 is not easily pulled out from the engagement body insertion port 6 d of the connection end forming tool 6 by the holding portion 6 e provided in the connection end forming tool 6. It can be stored and transported with the engagement body 2 still inserted in the end portion forming tool 6, and the handling becomes easy. That is, the connection end forming device 7 in which the engagement body 2 is inserted into the connection end forming tool 6 is carried from a factory or storage place to the construction site, and the water pipe 1 is connected to the connection end forming device 7 at the construction site. By inserting, the connection end part 4 can be easily formed in the water flow pipe 1.

  Further, in the water pipe 8 with the connecting end forming device, if the water pipe 1 is stored or transported in this state, the end portion 1a of the water pipe 1 is protected, and the end portion 1a (particularly, The end portion front portion 1b) to which the water stop member 3b is in close contact is not damaged. At the construction site, if the connecting end 4 is extracted from the connecting end forming tool 6 in the water pipe 8 with the connecting end forming device, the connecting end 4 is quickly inserted into the receiving port 3a of the joint 3. Thus, the water conduit 1 can be connected to the joint 3.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, as shown in FIGS. 9 and 10, the connection end forming tool 6 may not be provided with the confirmation window 6 i. The connection end forming tool 6 shown in this figure is formed thin, for example, by a plate material or the like, and the back end of the water pipe insertion port 6a is closed. And this connection edge part formation tool 6 is transparent or semi-transparent, and the inside can be seen through. Therefore, when the end portion 1a of the water pipe 1 is inserted into the water pipe insertion port 6a, it can be visually confirmed whether or not the end portion 1a is in contact with the water pipe abutting portion 6b. The engaging body 2 can be securely fitted in a predetermined position of the end portion 1 a of the water pipe 1. Further, the connection end forming tool 6 has a deep engagement body insertion port 6d, and the engagement body 2 is inserted into the engagement body insertion port 6d so that the entire engagement body 2 is accommodated in the engagement body insertion port 6d. Inserted. A projection 6j that protrudes inward and engages with the rear end of the engagement body 2 is provided at the base of the engagement body insertion port 6d. Therefore, the protrusion 6j serves as a holding portion 6e that holds the engaging body 2 so as not to come out. Further, as described above, since the entire engaging body 2 is accommodated in the engaging body insertion port 6d, the engaging body 2 moves backward with respect to the water conduit 1 by touching the engaging body 2. Therefore, the position of the engaging body 2 with respect to the end portion 1a of the water pipe 1 is stably held in the state of the water pipe 8 with the connecting end forming device into which the water pipe 1 is inserted (see FIG. 10). be able to.

  11 and 12, the in-core 5 to be inserted into the end portion 1 a of the water conduit 1 is inserted in advance on the connection end forming device 7 side, so that the connection end forming device body 9 is formed. An example is shown. That is, the connection end forming apparatus body 9 includes the connection end forming apparatus 7 and the incore 5, and the incore 5 is inserted into the water pipe insertion port 6 a of the connection end forming tool 6 in the connection end forming apparatus 7. ing. Therefore, the water pipe 1 without the in-core 5 is inserted into the connection end forming apparatus body 9. Further, the connection end forming tool 6 constituting the connection end forming apparatus body 9 is provided with a protruding portion 6k as an in-core holding portion protruding toward the near side at the back end of the water pipe insertion port 6a. It is done. That is, the protrusion 6k is in close contact with the inner peripheral surface of the incore 5 and holds the incore 5 in the water pipe insertion port 6a. The other structure is the same as that of the connection end part forming tool 6 shown in FIGS. 9 and 10, and has the same effect.

  Moreover, in the above embodiment, although the connection edge part formation tool 6 is provided with the holding | maintenance part 6e, this holding | maintenance part 6e does not need to be. Moreover, although the connection end part formation tool 6 is provided with the engagement body insertion port 6d, this engagement body insertion port 6d does not need to be provided. When the engagement body insertion port 6d is not provided in the connection end forming tool 6 in this way, the end surface of the connection end forming tool 6 that forms the mouth end of the water pipe insertion port 6a is the engagement body contact. It becomes the contact part 6c.

It is a perspective view of the connection end part formation tool of one embodiment of this invention. Similarly, it is sectional drawing by the AA in FIG. Similarly, it is sectional drawing of an engaging body. Similarly, it is sectional drawing which shows the state before attaching an engaging body to a connection edge part formation tool. Similarly, it is sectional drawing which shows the connection end part formation apparatus of the state which assembled | attached the engaging body to the connection end part formation tool, and the water flow pipe inserted in the connection end part formation apparatus. Similarly, it is sectional drawing which shows the water flow pipe with a connection end part formation apparatus which inserted the water flow pipe in the connection end part formation apparatus. Similarly, it is sectional drawing which shows the state which extracted the water flow pipe from the connection edge part formation tool. Similarly, it is sectional drawing which shows the state which inserted the connection end part of the water flow pipe into the receiving opening of the coupling. FIG. 6 is a view corresponding to FIG. 5 of another embodiment of the present invention. Similarly, it is a figure equivalent to FIG. FIG. 6 is a view corresponding to FIG. 5 of still another embodiment of the present invention. Similarly, it is a figure equivalent to FIG. It is a partial cross section figure which shows the connection end part of the conventional water flow pipe.

DESCRIPTION OF SYMBOLS 1 Water flow pipe 1a End part 2 Engagement body 2a Engagement body main body 2c Locking claw 3 Joint 4 Connection end part 5 Incore 6 Connection end part formation tool 6a Water flow pipe insertion port 6b Water flow pipe contact part 6c Engagement body contact part 6d Engagement body insertion port 6e Holding portion 7 Connection end forming device 8 Water pipe with connection end forming device 9 Connection end forming device body

Claims (8)

An engaging body provided with an elastically deformable locking claw that extends obliquely inwardly inside the cylindrical engaging body main body is provided outside the end portion of the water pipe, and the locking claw is connected to the end. A connection end forming tool that forms a connection end to the joint by fitting so as to lock the water pipe in a direction facing the tip side of the portion,
A water pipe insertion port into which an end portion of the water pipe is inserted, a water pipe abutting portion against which the end portion of the inserted water pipe abuts, and an engagement body abutting portion with which the tip of the engagement body abuts An end portion of the water pipe in a state in which the engaging claw that is elastically deformable is in contact with the engaging body abutting portion in a direction facing the engaging body abutting portion side. A connecting end forming tool for a water pipe, in which the locking claw locks the water pipe by inserting it into the engaging body and the water pipe insertion port .   The connection end forming tool of a water pipe according to claim 1, wherein the connection end forming tool is transparent or translucent.   3. The water pipe connecting end formation according to claim 1, further comprising an engagement body insertion port into which the engagement body is inserted, and a rear end of the engagement body insertion port serving as the engagement body contact portion. Ingredients.   The water pipe connecting end forming tool according to claim 3, further comprising a holding portion that holds the engaging body inserted into the engaging body insertion port so as not to come out.   A connection end forming device for a water pipe, comprising the connection end forming tool according to claim 1 and the engaging body. The connection end forming tool according to claim 3 or 4 and the engagement body,
A connection end forming device for a water pipe, wherein the engagement body is inserted into the engagement body insertion port of the connection end forming tool. The connection end forming device according to claim 6, and an in-core inserted into an end portion of the water pipe,
A connection end forming device body of a water pipe, wherein the in-core is inserted into the water pipe insertion port of the connection end forming tool. The connection end forming device according to claim 6 and the water pipe.
The connection end forming device in which the end portion of the water pipe is inserted into the water pipe insertion port of the connection end forming tool and the engaging body is fitted to the outside of the end portion. With water pipe.

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