JP2009092111A - Fusion bonding management tag and fusion bonding joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fusion bonding management tag which can be fitted into a terminal cover without hindering an indicator pin from protruding. <P>SOLUTION: There is provided a fusion bonding management tag 2 which is attached to a fusion bonding joint 1 equipped with the terminal cover 11 and the indicator pin 14 provided in the vicinity of the terminal cover 11 and on which fusion bonding information has been recorded. The tag 2 includes a fitting portion 21 fitted into the terminal cover 11 of the fusion bonding joint 1, an information recorder 22 on which the fusion bonding information has been recorded, and a coupling member 23 which couples the fitting portion 21 and the information recorder 22 to each other. The coupling member 23 has an opening 232 at a position where the coupling member 23 and the indicator pin 14 overlap with each other with the coupling member 23 fitted into the terminal cover 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fusion management tag used when fusing a fusion joint, and a fusion joint including the fusion management tag.

  2. Description of the Related Art Conventionally, when connecting a synthetic resin gas pipe or a water and sewage pipe, a technique is known in which a fusion joint in which a heating wire is embedded is energized and fused to be connected.

  In this way, when connecting synthetic resin pipes by fusion, conditions such as optimum voltage and time for fusion differ depending on the characteristics of the resin, the diameter and thickness of the pipe, and the like.

  Therefore, even if the type of resin and the diameter of the resin are examined at the construction site and fusion is performed under the optimum conditions, the work becomes complicated and there is a possibility that the fusion information is erroneously input to the fusion apparatus. .

  For this reason, a seal printed with a bar code recording this fusion information is affixed to the side of the pipe, the fusion information is read, and the pipes are connected by fusion under optimum conditions. It has been broken.

  However, with the recent advancement of technology, the amount of fusion information required for fusion has increased, and the size of the barcode has increased accordingly, so it is possible to secure a space for sticking the seal to the side of the tube. It is gone.

  In addition, when connecting small-diameter pipes by fusion joints, the area of the side surface of the pipe to which the seal is to be attached is narrow, and the seal may not be attached.

  As means for solving these problems, for example, in Patent Document 1, a fusion management tag for displaying fusion information includes a fixing part fitted to a terminal cover part of a fusion joint, an information code display part, The structure provided with the connection part which connects this fixing | fixed part and a display part is disclosed.

Thus, by forming the fusion management tag separately from the fusion joint, it is possible to provide a fusion management tag that displays a large-capacity information code.
JP-A-9-303660

  By the way, the above-mentioned fusion joint is generally provided with an indicator pin in the vicinity of a terminal socket for energization.

  This indicator pin utilizes the fact that the internal resin expands at the time of fusion, and the completion of the fusion can be known by the indicator pin protruding from the side surface of the fusion joint.

  However, in the above-described Patent Document 1, since the fusion management tag is fitted into the terminal cover portion, there is a case where the protrusion of the indicator pin provided in the vicinity of the terminal cover portion is prevented.

  In addition, since high precision is required for the resin molding of the fixing portion, there is a case where the fusion management tag cannot be fitted to the terminal cover portion due to a slight error.

  Therefore, the present invention provides a fusion management tag that can be fitted into the terminal cover portion without hindering the protrusion of the indicator pin, and a fusion joint including the fusion management tag. It is aimed.

  In order to achieve the above object, the fusion management tag of the present invention is attached to a fusion joint including a terminal cover portion and an indicator pin provided in the vicinity of the terminal cover portion, and fusion information on which fusion information is recorded. An attachment management tag comprising: a fitting portion fitted to the terminal cover portion of the fusion joint; an information recording portion in which the fusion information is recorded; and the fitting portion and the information recording portion. And an opening is provided at a position overlapping with the indicator pin when fitted to the terminal cover portion.

  Moreover, the said connection part can be set as the structure which is formed of a pair of connection material, and is provided between the pair of connection material and the said opening part is provided.

  Further, the terminal cover part is formed in a cylindrical shape, and the fitting part is provided on the annular part and the inner side surface of the annular part, and the inner diameter is substantially the same as the outer diameter of the terminal cover part. And an adjustment section that can be adjusted to be integrated with each other.

  And the said adjustment part can be formed by the protrusion part provided in the circumferential direction at equal intervals on the inner surface of the said annular part.

  Moreover, the said adjustment part can be formed in the inner surface of the said annular part, and can be formed by the disk-shaped thin film part thinner than the said annular part.

  Further, the terminal cover portion is formed in a cylindrical shape, and the fitting portion includes an annular portion whose inner diameter is smaller than the outer diameter of the terminal cover portion, and a circumferential direction is provided on an inner surface of the annular portion. It can be set as the structure by which a notch is provided in equal intervals.

  The fusion joint of the present invention is characterized in that any one of the above-described fusion management tags is fitted into the terminal cover portion.

  As described above, the fusion management tag of the present invention includes a fitting portion fitted into the terminal cover portion of the fusion joint, an information recording portion in which fusion information is recorded, a fitting portion, and an information recording portion. And an opening is provided at a position overlapping the indicator pin when fitted to the terminal cover portion.

  Therefore, at the time of fusion, the completion of the fusion can be confirmed by projecting the indicator pin through the opening.

  Moreover, a connection part is formed with a pair of connection material, and the length of an opening part can be lengthened by simple structure by being pinched | interposed into a pair of connection material and providing an opening part.

  Further, the terminal cover portion is formed in a cylindrical shape, and the fitting portion is provided on the inner surface of the annular portion and the annular portion so that the inner diameter can be adjusted to be substantially the same as the outer diameter of the terminal cover portion. Part.

  Therefore, the inner diameter of the adjusting portion can be adjusted to be approximately the same as the outer diameter of the terminal cover portion, so that even if an error occurs in the resin molding of the fitting portion, the fusion management tag is easy to install and difficult to remove.

  And if the adjustment part is formed on the inner surface of the annular part by the protrusions provided at equal intervals in the circumferential direction, the annular part is easily deformed locally, so there is an error in resin molding of the fitting part. Even if it occurs, the fusion management tag can be fitted to the terminal cover portion.

  In addition, if the adjustment part is formed on the inner surface of the annular part and formed by a disk-shaped thin film part thinner than the annular part, the thin film part is deformed, so even if an error occurs in the resin molding of the fitting part, The fusion management tag can be fitted into the terminal cover portion.

  Furthermore, the terminal cover portion is formed in a cylindrical shape, and the fitting portion includes an annular portion whose inner diameter is smaller than the outer diameter of the terminal cover portion, and is equally spaced in the circumferential direction on the inner surface of the annular portion. A notch is provided.

  Therefore, even if an error occurs in the resin molding of the fitting portion by deforming the inner side where the cut of the annular portion is provided, the fusion management tag can be fitted into the terminal cover portion.

  And, since the fusion joint of the present invention can fit any one of the above-mentioned fusion management tags to the terminal cover part, the indicator pin can protrude through the opening provided in the connecting part. Completion of fusion can be confirmed.

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

  First, the overall configuration of the fusion structure C including the fusion joint 1 to which the fusion management tag 2 of the present invention is attached will be described with reference to FIG.

  As shown in FIG. 2, the fusion structure C including the fusion joint 1 of the present embodiment includes the fusion joint 1 and pipes 31 and 32 inserted into the pipe insertion portions 15 and 16 of the fusion joint 1. And a fusion management tag 2 attached to the fusion joint 1.

  The tubes 31 and 32 are formed of a synthetic resin in a cylindrical shape, and polyethylene or the like can be used as the synthetic resin.

  The outer diameters of the pipes 31 and 32 are formed to be substantially the same as the inner diameters of the pipe insertion parts 15 and 16 of the fusion joint 1, and the end parts 311 and 321 are the pipe insertion parts 15 of the fusion joint 1. , 16 and fused and connected.

  The fusion joint 1 of the present embodiment is formed of a synthetic resin made of the same material as the pipes 31 and 32 to be connected, and is formed by bending a cylinder at a substantially right angle as shown in FIGS. The main body part 20, the tube insertion parts 15 and 16 at both ends of the main body part 20, the terminal cover parts 11 and 11 projecting from the side surfaces of the main body part 20, and the terminal cover parts 11 and 11. Indicator pins 14 and 14 and a fusion management tag 2 fitted to one terminal cover portion 11.

  The tube insertion portions 15 and 16 are provided as openings at both ends of the main body portion 20, and are formed substantially the same as the outer diameters of the tubes 31 and 32 to which the inner diameters are connected.

  In addition, in the tube insertion portions 15 and 16, heating wires 17,... (See FIGS. 4 and 5) are embedded on the side close to the inner surface that contacts the tubes 31 and 32. The heat wires 17,... Are formed to generate heat and melt the surrounding synthetic resin.

  Further, the terminal cover portions 11 and 11 are formed in a cylindrical shape integral with the main body portion 20 in order to protect the internal metal terminals 12 and 12, and the tube insertion portions 15 at both ends of the main body portion 20. , 16 projecting from the side surface.

  Since the outer diameters of the terminal cover parts 11 and 11 are determined in accordance with the connectors 41 and 41 (see FIGS. 4 and 5) of the fusion apparatus, the characteristics, diameter and thickness of the resin of the pipe to be connected Regardless of, etc., it is a certain size.

  The terminals 12 and 12 protected by the terminal cover portions 11 and 11 are connected to the heating wires 17 embedded in the tube insertion portions 15 and 16 described above, and are fused to the terminals 12 and 12. The connectors 41, 41 (see FIGS. 4 (b), 5 (a)) are connected so that the heating wires 17,... Can be energized.

  Further, the indicator pins 14 and 14 are formed in the shape of a thin protrusion integrated with the main body portion 20, and are inserted into the pin holes 13 and 13 provided on the side surfaces of the tube insertion portions 15 and 16 at both ends of the main body portion 20. Is formed. For this reason, the base part of this indicator pin 14 and 14 has reached the side close | similar to the inner surface in which the heating wires 17 and ... are provided.

  In addition, the indicator pins 14 and 14 are installed at a slight distance in the tube axis direction from the terminal cover portions 11 and 11 so that the fusion by the heating wires 17 can be captured. ing.

  The fusion management tag 2 according to the present embodiment is formed of synthetic resin. As shown in FIG. 3, the fitting part 21 fitted into the terminal cover part 11 and the welding information are recorded. The information recording unit 22 and the connecting unit 23 that connects the fitting unit 21 and the information recording unit 22 are integrally provided.

  The fitting portion 21 includes an annular portion 211 and a plurality of projecting portions 212,... As adjustment portions provided on the inner surface of the annular portion 211.

  The annular portion 211 is formed in an annular shape, and an inner diameter R1 that is the diameter of the inner surface is formed larger than an outer diameter Rs that is the diameter of the outer surface 111 of the terminal cover portion 11 of the fusion joint 1. ing.

  Further, the protrusions 212,... Are formed in a semi-cylindrical shape, and are provided on the inner surface of the annular portion 211 at equal intervals in the circumferential direction. In addition, an inner diameter R2 connecting the tips of the protruding portions 212 and 212 facing each other is formed to be smaller than an outer diameter Rs that is a diameter of the outer surface 111 of the terminal cover portion 11 of the fusion joint 1.

  In addition, the protrusion height from the annular part 211 of this protrusion part 212, ... is formed in the same grade as the error width of resin molding of the annular part 211.

  Further, the projecting portions 212,... Have a semi-cylindrical circular arc portion facing the side facing the center of the annular portion 211 so that the frictional resistance is reduced when fitted to the terminal cover portion 11. Is formed.

  A fitting hole 210 is formed at the center surrounded by the annular portion 211 and the protruding portions 212.

  Further, the information recording unit 22 is formed in a rectangular plate shape, and the bar code 222 on which the fusing information is recorded on one side of the main body plate 220 or the fusing device when the bar code 222 cannot be read. An emergency code 221 or the like manually input is printed. As the fusion information for managing the quality of the fusion recorded on the bar code 222, the type of joint, the diameter of the joint, the thickness of the joint, the type of resin, the resistance value of the heating wire 17,. ,and so on.

  Further, the connecting portion 23 includes a pair of connecting members 231 and 231 and an opening 232 formed by being sandwiched between the pair of connecting members 231 and 231.

  The pair of connecting members 231 and 231 are formed in a long rod shape, and are spanned in parallel to the outer side surface of the fitting portion 21 and one side surface of the information recording portion 22 at a distance from each other. Thus, an opening 232 is formed between the pair of connecting members 231 and 231.

  In addition, the opening 232 is formed to be surrounded by the outer surface of the annular portion 211 of the fitting portion 21, one side surface of the information recording unit 22, and the side surfaces of the pair of connecting members 231 and 231.

  The widths of the connecting members 231 and 231 are set to be equal to or smaller than the diameter of the indicator pin 14. Even if the fusion management tag 2 rotates about the terminal cover 11 and hits the indicator pin 14, the indicator pin 14 protruding at the time of fusion sticks out sideways and becomes a problem. It will never be.

  When the fitting portion 21 of the fusion management tag 2 is fitted to the terminal cover portion 11 of the fusion joint 1 and the information recording portion 22 is positioned along the tube axis direction, the indicator pin 14 The position is a position between the pair of connecting members 231 and 231 and overlaps with the position of the opening 232.

  Next, referring to FIGS. 4 and 5, the fusion state when the pipes 31 and 32 are fused and connected by the fusion joint 1 of the present embodiment will be described in order.

  First, in a factory or the like, the fusion management tag 2 is attached to the fusion joint 1 by fitting the cylindrical terminal cover portion 11 so as to match the fitting hole 210 of the fitting portion 21. At this time, in consideration of convenience of attachment and transportation, the extension direction of the connecting portion 23 of the fusion management tag 2 is attached in accordance with the pipe axis direction of the fusion joint 1 (see FIG. 3).

  Next, as shown in FIG. 4A, the end 311 (see FIG. 2) of one tube 31 is inserted into one tube insertion portion 15 of the fusion joint 1, and the other insertion portion 16 is inserted into the other insertion portion 16. The end 321 (see FIG. 2) of the tube 32 is inserted.

  Although not shown, the barcode 222 (see FIG. 3) printed on the information recording unit 22 of the fusion management tag 2 is read by the reader of the fusion device to make the fusion device recognize the welding information.

  Subsequently, as shown in FIG. 4B, the connectors 41 and 41 of the fusion device are fitted to the terminal cover portions 11 and 11, and the terminals 12 and 12 are energized from the fusion device.

  Then, the heating wires 17,... Are energized from the terminals 12, 12, and the heating wires 17, etc. generate heat, and this heat causes the tube insertion portions 15, 16 around the heating wires 17,. The vicinity of the inner side surface is melted and expanded, and the fusion joint 1 and the side surfaces of the pipes 31 and 32 are in contact with each other.

  And if electricity supply is continued, as shown to Fig.5 (a), the melting range of the heating wire 17, ... vicinity will spread, and it will expand | swell further. Here, the center part and the end part where the heating wires 17,... Of the fusion joint 1 are not embedded are set in a cold zone that does not generate heat, and the expansion is hindered. Expansion pressure is generated in the direction of movement (vertical direction in the figure).

  Then, the indicator pins 14 and 14 whose base portions reach the vicinity of the heating wires 17 and so on project from the side surfaces of the tube insertion portions 15 and 16 due to the expansion pressure.

  Here, one indicator pin 14 on the side where the fusion management tag 2 is attached to the terminal cover portion 11 rises through an opening 232 formed between the connecting members 231 and 231.

  Finally, as shown in FIG. 5B, the energization is automatically terminated by the fusion device, the connectors 41 and 41 are removed, and the protrusions of the indicator pins 14 and 14 are confirmed.

  In this way, while managing the quality of the fusion using the fusion management tag 2, the one pipe 31 and the other pipe 32 are fused and connected together by the fusion joint 1. .

  Next, the operation of the fusion management tag 2 of the present embodiment will be described.

  As described above, the fusion management tag 2 of the present invention includes a fitting portion 21 that is fitted to the terminal cover portion 11 of the fusion joint 1, an information recording portion 22 in which fusion information is recorded, and a fitting portion. 21 and the information recording unit 22, and the connection unit 23 is provided with an opening 232 at a position overlapping the indicator pin 14 in a state of being fitted to the terminal cover unit 11. .

  Therefore, at the time of fusion, the completion of the fusion can be confirmed by projecting the indicator pin 14 through the opening 232.

  In other words, the fusion management tag 2 generally has a fusion joint in which the fitting portion 21 is fitted to the terminal cover portion 11 and the connecting portion 23 is bridged in consideration of convenience of installation and transportation. It is attached according to the tube axis direction of 1.

  However, since the indicator pin 14 is provided right next to the terminal cover portion 11 in the tube axis direction, conventionally, the connecting portion 23 and the indicator pin 14 may overlap each other. If it does so, the protrusion of the indicator pin 14 by expansion pressure will be prevented in the case of fusion.

  On the other hand, the fusion management tag 2 according to the present embodiment is opened to the connecting portion 23 corresponding to the position overlapping the indicator pin 14 in a state where the fitting portion 21 is fitted to the terminal cover portion 11. A portion 232 is provided.

  Therefore, the indicator pin 14 can protrude through the opening 232, and the completion of fusion can be confirmed.

  The connecting portion 23 is formed by a pair of connecting members 231 and 231 and is provided between the pair of connecting members 231 and 231 so that the opening 232 is provided, thereby increasing the length of the opening 232 with a simple configuration. can do.

  That is, the position where the indicator pin 14 is provided differs depending on the type of pipe to be fused and the distance between the terminal cover portion 11 and the indicator pin 14 is different, but what if the opening 232 is formed long? Even if the indicator pin 14 is provided at a proper distance, the protrusion is not hindered.

  In addition, since the pair of connecting members 231 and 231 are spaced apart from each other, the information recording unit 22 rotates relative to the fitting unit 21 fitted to the terminal cover unit 11. Can be prevented.

  Further, the terminal cover portion 11 is formed in a cylindrical shape, and the fitting portion 21 is provided on the inner surface of the annular portion 211 and the annular portion 211, and the inner diameter is substantially equal to the outer diameter Rs of the terminal cover portion 11. The protrusions 212,... As adjustment parts that can be adjusted in the same manner are integrally provided.

  Therefore, by adjusting the inner diameter R2 of the protrusions 212,... As the adjustment part to be substantially the same as the outer diameter Rs of the terminal cover part, even if an error occurs in the resin molding of the annular part 211, it is for fusion management. The fitting portion 21 of the tag 2 can be securely fitted to the terminal cover portion 11.

  And the adjustment part of this Embodiment is formed in the inner surface of the annular part 211 by the protrusion part 212 ... equidistantly provided in the circumferential direction, and makes the annular part 211 locally Since it becomes easy to deform, even if an error occurs in the resin molding of the fitting portion 21, the fitting portion 21 of the fusion management tag 2 can be fitted to the terminal cover portion 11.

  That is, since the protrusions 212 are provided at regular intervals on the annular part 211, if the protrusions 212 are brought into contact with the outer surface 111 (see FIG. 3) of the terminal cover 11, the annular part 211 is locally In the radial direction.

  In this way, if the annular portion 211 is locally deformed in the radial direction, it becomes easier to deform than the annular portion 211 is deformed so as to extend in the circumferential direction, and thus the outer diameter Rs of the terminal cover portion 11. And can be deformed to have substantially the same diameter.

  Furthermore, since the tip of the protruding portion 212 is formed in an arc shape, it is possible to reduce the frictional resistance when inserted into the terminal cover portion 11.

  In addition, since the fitting portion 21 is deformed by applying a certain amount of force and is fitted to the terminal cover portion 11, it is difficult to come off once fitted.

  The fusion joint 1 of the present embodiment is configured such that the fitting portion 21 of the fusion management tag 2 is fitted to the terminal cover portion 11 so that the indicator pin 14 is inserted through the opening 232 provided in the connecting portion 23. Since it can project, the completion of fusion can be confirmed.

  Thus, if the completion of fusion can be confirmed, the one pipe 31 and the other pipe 32 can be reliably fused and connected by the fusion joint 1.

  Hereinafter, a fusion management tag 2 </ b> A in a form different from the above embodiment will be described with reference to FIG. 6.

  The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  First, in terms of configuration, the fitting portion 21 of the fusion management tag 2A according to the present embodiment is formed on an annular portion 211 and an inner surface of the annular portion 211 as shown in FIG. And a thin film portion 213 that is thinner than the annular portion 211.

  The annular portion 211 is formed in an annular shape, and an inner diameter R1 that is a diameter of the inner surface is formed larger than an outer diameter Rs of the terminal cover portion 11 of the fusion joint 1.

  Further, as shown in FIG. 6B, the thin film portion 213 is provided integrally with the annular portion 211 on the inner surface of the annular portion 211, and the thickness T <b> 3 is greater than the thickness T <b> 1 of the annular portion 211. Is formed in a thin disc shape concentric with the annular portion 211.

  In addition, the inner diameter R3 of the thin film portion 213 is formed smaller than the outer diameter Rs that is the diameter of the outer surface 111 of the terminal cover portion 11 of the fusion joint 1.

  The protrusion height of the thin film portion 213 from the annular portion 211 is formed to be approximately the same as the resin molding error width of the annular portion 211.

  As described above, the fusion management tag 2A according to the present embodiment includes the disk-shaped thin film portion 213 that is formed on the inner surface of the annular portion 211 and is thinner than the annular portion 211. Therefore, even if an error occurs in the resin molding of the fitting portion 21, the fusion management tag 2A can be fitted to the terminal cover portion 11.

  That is, the thin film portion 213 having a thickness T3 that is thinner than the thickness T1 of the annular portion 211 has a larger amount of deformation in the out-of-plane direction than the annular portion 211, so that the thin film portion 213 is deformed. The terminal cover portion 11 can be deformed so as to have substantially the same diameter as the outer diameter Rs.

  In this way, by combining the annular portion 211 having a large rigidity and not easily deformed with the thin film portion 213 having a small rigidity and is easily deformed, the fitting can be easily fitted to the terminal cover portion 11 and the connecting portion 23 can be easily held. A joint portion 21 can be formed.

  In addition, when the thin film portion 213 is fitted to the terminal cover portion 11, the thin film portion 213 is deformed in an out-of-plane direction by an external force and comes into contact with the terminal cover portion 11 almost all around. When fitted, it becomes difficult to come off.

  Other configurations and operational effects are substantially the same as those in the above-described embodiment, and thus the description thereof is omitted.

  Hereinafter, a fusion management tag 2B in a form different from that of the above-described embodiment and examples will be described with reference to FIG.

  The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  First, in terms of configuration, as shown in FIGS. 7A and 7B, the fusion management tag 2B of the present embodiment has a fitting portion 21 fitted into the terminal cover portion 11 and welding information. The recorded information recording part 22 and the connection part 24 which connects the fitting part 21 and the information recording part 22 are provided integrally.

  This fitting portion 21 is formed by providing notches 214a,... At equal intervals in the circumferential direction on the inner surface of the annular portion 214.

  In addition, the inner diameter R4 of the annular portion 214 is formed to be smaller than the outer diameter Rs of the terminal cover portion 11.

  The depth of the cut 214a is formed to be approximately the same as the resin molding error width of the annular portion 214.

  In addition, the connecting portion 24 includes a plate-like connecting plate 241 and an opening 242 provided in the middle of the plate-like connecting plate 241.

  As described above, the fitting portion 21 of the fusion management tag 2B of the present embodiment includes the annular portion 214 whose inner diameter R4 is smaller than the outer diameter Rs of the terminal cover portion 11, and a circular portion is formed on the inner surface of the annular portion 214. Cuts 214a,... Are provided at equal intervals in the circumferential direction.

  Therefore, even if an error occurs in the resin molding of the annular portion 214 due to deformation of the inside of the annular portion 214 where the notches 214a,... Are provided, the fusion management tag 2B is attached to the terminal cover portion 11. Can be mated.

  That is, the annular part 214 partitioned by the notch 214a is deformed in the out-of-plane direction and the circumferential direction of the annular part 214, and is substantially the same as the outer diameter Rs of the terminal cover part 11. It can be deformed to have a diameter.

  Further, since the connecting portion 24 of the fusion management tag 2B of the present embodiment has an opening 242 provided in the middle of the plate-like connecting plate 241, the indicator pin 14 is projected through the opening 242. Can do.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment and examples, and thus description thereof is omitted.

  Hereinafter, the fusion management tags 2C, 2D, and 2E that are different from the above-described embodiment and examples will be described with reference to FIGS. 8A, 8B, and 8C.

  FIGS. 8A, 8B, and 8C are cross-sectional views of the fitting portion 21 viewed in the same direction as FIG. 6B, and each fitting portion 21 is formed in an annular shape. Has been.

  The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  First, in terms of configuration, as shown in FIG. 8A, the fusion management tag 2C of the present embodiment is formed with a fitting portion 21 integrated with the connecting portion 23 as a tapered annular portion 215. Has been.

  The tapered annular portion 215 is a thin-walled portion closer to the tip of the terminal cover portion 11 from the inner diameter R1 of the annular portion closer to the base of the terminal cover portion 11 when fitted to the terminal cover portion 11. The inner diameter R3 of the portion 215a is formed so that the inner diameter increases linearly.

  Therefore, even if an error occurs in the resin molding due to the deformation of the thin-walled portion 215a that is pointed in a triangular shape of the tapered annular portion 215, the fusion management tag 2C can be fitted to the terminal cover portion 11. .

  In addition, if the inner diameter is formed so as to increase gradually, the tip of the terminal cover 11 is brought into contact with the inclined surface when the terminal cover 11 is fitted, and the inclined surface is guided. Since it can be pushed in, it can be easily fitted.

  Similarly, in the fusion management tag 2D of this embodiment, as shown in FIG. 8B, the fitting portion 21 integrated with the connecting portion 23 is formed as an annular portion 216 having a valley-shaped cross section. .

  The annular portion 216 having a valley-shaped cross section has an inner diameter that is linear from the inner diameter R1 of the annular portion in the vicinity of the center of the fitting portion 21 toward the inner diameter R3 of the thin-walled portion 216a at both ends. It is formed so as to increase gradually and has a V shape.

  Therefore, even if an error occurs in the resin molding due to the deformation of the triangular-shaped thin-walled portions 216a and 216a formed on both end surfaces of the annular portion 216 having a valley-shaped cross section, the fusion management tag 2D is connected to the terminal. The cover portion 11 can be fitted.

  Further, in the fusion management tag 2E of the present embodiment, as shown in FIG. 8C, the fitting portion 21 integrated with the connecting portion 23 is formed as an annular portion 217 having a mountain-shaped cross section.

  The annular portion 217 having a mountain-shaped cross section has a linear inner diameter from the inner diameter R1 of the annular portion on both end faces of the fitting portion 21 in the member thickness direction toward the inner diameter R3 of the thin portion 217a near the center. It is formed so as to increase gradually and has a triangular shape.

  Therefore, even if an error occurs in the resin molding due to the deformation of the triangular thin-walled portion 217a formed on the center side of the annular portion 216 having a mountain-shaped cross section, the terminal cover portion is attached to the fusion management tag 2E. 11 can be fitted.

  In addition, if the inner diameter is formed so as to increase gradually, the tip of the terminal cover 11 is brought into contact with the inclined surface when the terminal cover 11 is fitted, and the inclined surface is guided. Since it can be pushed in, it can be easily fitted.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment and examples, and thus description thereof is omitted.

  The preferred embodiments and examples of the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to the embodiments or examples, and does not depart from the gist of the present invention. A degree of design change is included in the present invention.

  For example, in this Embodiment, although the case where the main-body part 20 of the fusion joint 1 was formed in the cylindrical shape bent at substantially right angle was demonstrated, it is not limited to this, As a shape of the main-body part 20 May be anything such as a straight cylinder or one having a branch pipe.

  In this embodiment, the case where the barcode 222 and the emergency code 221 are printed on the information recording unit 22 that records the fusion information has been described. However, the present invention is not limited to this, and the fusion information is recorded. Any device such as an IC chip may be used as long as it can be read by the device.

It is a perspective view explaining the structure of the fusion joint with which the tag for fusion management of the best embodiment of this invention was attached. It is a top view explaining the whole structure of the fusion joint with which the tag for fusion management of the best embodiment of this invention was attached. It is explanatory drawing explaining the structure of the tag for fusion management of the best embodiment of this invention. (A) is a perspective view explaining the whole structure, (b) is a top view explaining the structure of a fitting part. FIG. 3 is a cross-sectional view illustrating a fusion state when viewed in the direction of arrows AA in FIG. 2. (A) is before fusing, and (b) is when the heating wire generates heat. FIG. 3 is a cross-sectional view illustrating a fusion state when viewed in the direction of arrows AA in FIG. 2. (A) is the time when the surface pressure is generated, and (b) is the time when the fusion is completed. It is explanatory drawing explaining the structure of the fitting part of the tag for a fusion management of Example 1. FIG. (A) is a top view, (b) is sectional drawing. It is explanatory drawing explaining the structure of the tag for a fusion management of Example 2. FIG. (A) is a perspective view explaining the whole structure, (b) is a top view explaining the structure of a fitting part. It is sectional drawing explaining the structure of the tag for fusion management of Example 3. FIG. (A) is a tapered annular part, (b) is a valley-like annular part, and (c) is a mountain-like annular part.

Explanation of symbols

C Fusion structure Rs Outer diameter R1 of terminal cover part R1 Inner diameter R2 Protrusion part inner diameter R3 Thin part inner diameter R4 Annular part inner diameter T1 Annular part thickness T3 Thin part thickness 1 Fusion joint 11 Terminal cover part 14 Indicator pin 2, 2A, 2B, 2C, 2D, 2E Fusing management tag 21 Fitting part 211 Annular part 212 Protruding part 213 Thin part 214 Annular part 214a Notch 22 Information recording part 23 Linking part 231 connecting member 232 opening 24 connecting portion 241 connecting plate 242 opening 31, 32 pipe

Claims (7)

A fusion management tag that is attached to a fusion joint including a terminal cover portion and an indicator pin provided in the vicinity of the terminal cover portion and recorded fusion information,
And having a fitting part fitted to the terminal cover part of the fusion joint, an information recording part in which the fusion information is recorded, and a connecting part that connects the fitting part and the information recording part. ,
The fusion management tag according to claim 1, wherein an opening is provided at a position overlapping the indicator pin in a state where the connection portion is fitted to the terminal cover portion.   The fusion management tag according to claim 1, wherein the connecting portion is formed of a pair of connecting members, and the opening is provided between the pair of connecting members. The terminal cover portion is formed in a cylindrical shape,
The fitting portion integrally includes an annular portion and an adjustment portion that is provided on an inner surface of the annular portion and whose inner diameter can be adjusted substantially the same as the outer diameter of the terminal cover portion. The fusion management tag according to claim 1 or 2.   The fusion adjusting tag according to claim 3, wherein the adjustment portion is a protrusion provided on the inner side surface of the annular portion at equal intervals in the circumferential direction.   The fusion adjusting tag according to claim 3, wherein the adjustment portion is a disk-shaped thin film portion that is formed on an inner surface of the annular portion and is thinner than the annular portion. The terminal cover portion is formed in a cylindrical shape,
The said fitting part is provided with the annular part whose inner diameter is smaller than the outer diameter of the said terminal cover part, and the notch is provided in the inner surface of this annular part at equal intervals in the circumferential direction. Alternatively, the fusion management tag according to claim 2. A fusion joint according to any one of claims 1 to 6, wherein the fusion management tag according to any one of claims 1 to 6 is fitted into the terminal cover portion.

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