JP2007205446A - Pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joint which can easily prevent a worker from being injured by burrs formed on each cover member. <P>SOLUTION: A cylindrical pipe joint body 14 is bent at a certain angle for connecting pipe members to each other. The first and second cylindrical cover members 16, 17 are respectively fitted on the joint body from opposite ends thereof to cover the outer periphery of the joint body. End faces 18 formed by cutting end portions of the cover members 16, 17 at an angle corresponding to the angle of bend of the joint body are connected to each other at the bent portion of the joint body in order to cover the bent portion. A tape member 19 is adhered to the connection portion of the end faces 18 for covering the same. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pipe joint for connecting a plurality of pipe members.

  Conventionally, for example, a vertical gutter provided in a vertical direction in a building, and a guide pipe arranged along the ground to guide rainwater flowing through the vertical gutter to a predetermined location such as a drain outlet on the ground, for example. A pipe joint for connecting the two to each other is known (see, for example, Patent Document 1).

  This pipe joint is provided with a cylindrical joint body made of, for example, aluminum. The joint body is bent at a predetermined angle, and one end thereof is inserted into the end of the vertical shaft, and the other end is inserted into the end of the guide tube. Furthermore, the pipe joint includes a cylindrical first cover member and a first cover member fitted to the joint body from each end so as to cover the outer peripheral surface of the joint body and to expose each end of the joint body. Two cover members are provided.

  Each of the first and second cover members is made of, for example, aluminum, and has substantially the same cross-sectional shape as the cross-sectional shape of the vertical rod and the guide tube, respectively. The end portions of the cover members that face each other are cut so that the end surfaces thereof are inclined at an angle that is approximately half the bending angle of the joint body with respect to the axis of each cover member. Thereby, each cover member becomes mutually joinable in each end surface.

When connecting the downpipe and guide pipe to each other via a pipe joint, insert one end of the joint body with the cover members joined to each other into the end of the downpipe and connect the other end of the joint body The end portion of the guide rod and the end surface of the guide tube are brought into contact with the end surface of the corresponding cover member opposite to the end surface. At this time, since each cover member has a cross-sectional shape substantially the same as the cross-sectional shape of the vertical shaft and the guide tube, the outer peripheral surface of the vertical shaft and the outer peripheral surface of the guide tube and the outer peripheral surface of each cover member are substantially the same. Become the same. Thereby, the deterioration of the external appearance by a level | step difference arising in the connection part of a pipe joint, a vertical shaft, and a guide pipe can be prevented.
Noto 2536741 (page 5-6, FIG. 1)

  However, when the ends of the first and second cover members are cut, so-called burrs may occur at the cut portions. When a pipe joint is assembled with burrs formed on each cover member, the workers with the burrs generated on each cover member during shipping work of the assembled pipe joint or pipe connection work using the pipe joint. There is a risk of hand injury.

  Although it is conceivable to remove burrs by grinding the cut part after assembling the pipe joint, it is necessary to manually grind the cut part for each pipe joint, resulting in a significant increase in work time. .

  Accordingly, an object of the present invention is to provide a pipe joint that can easily prevent an operator from being injured by a burr formed on each cover member.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a tubular joint body that is bent at a predetermined angle and connects pipe members to each other, and covers the outer peripheral surface of the joint body. In order to be able to be joined to each other at the end surfaces of the end portions that are fitted to the joint main body from the respective end portions thereof, and cover the bent portions of the joint main body, the end portions of the joint main bodies abut each other. A cylindrical first cover member and a second cover member cut at an angle corresponding to the bending angle of the first cover member and the second cover member. The tape member is affixed so that it may be covered.

  The invention according to claim 2 has a cylindrical straight pipe portion and a cylindrical portion protruding outward from the peripheral wall of the straight pipe portion, and a base end portion of the cylindrical portion is the straight pipe. A joint body that tapers toward both sides of the part, and the straight pipe part fitted from the respective end parts so as to cover the outer peripheral surface of the straight pipe part, and joined to each other at the end faces of the opposite ends. A cylindrical first cover portion and a second cover portion, wherein each end portion is cut along a peripheral edge of the base end portion of the cylindrical portion to allow exposure of the cylindrical portion. The cover member and the second cover member, and the first and second cover members are fitted to the tube portion so as to cover the outer peripheral surface of the tube portion and are located on the straight pipe portion side. A third cover having a joining surface to be joined to each of the cut surfaces and having a pair of tapered portions covering the proximal end portion of the cylindrical portion up to the respective distal ends thereof A pipe joint comprising a member, wherein a tape member is affixed to a joint portion of each of the first, second and third cover members so as to cover the joint portion. To do.

  According to the first aspect of the present invention, the tape member is attached to the joint portion between the end faces, which are cut surfaces of the first and second cover members, so as to cover the joint portion. Even if the burrs are generated at the cut portions when the end portions of the first and second cover members are cut, the burrs generated at the cut portions can be covered with the tape member with the cut surfaces, that is, the end surfaces joined to each other. it can. This ensures that workers are injured by burrs generated on each cover member as before, during shipping of assembled pipe joints and pipe connection work using the pipe joints. Can be prevented.

  In addition, by attaching a tape member to the joint portion of each of the first and second cover members, it is possible to prevent an operator from being injured by a burr generated on each cover member. Less time is required for grinding the cut portion of each cover member after assembly. Therefore, it is possible to easily prevent an operator from being injured by a burr generated on each cover member without incurring a significant increase in work time as in the prior art.

  Furthermore, since burrs generated at the cut portions of each cover member can be covered with a tape member, for example, when a plurality of pipe joints are stacked during transportation, other pipe joints are damaged by burrs generated on each cover member. This can be reliably suppressed.

  According to the second aspect of the present invention, the tape member is attached to the joint portion of each of the first, second and third cover members so as to cover the joint portion. When the end of each cover member is cut during molding of each of the second cover members, or when the end of the third cover member is cut to form each tapered portion on the third cover member. Even when burrs are generated in the portion, the burrs generated in the cut portion are caused by the tape member in the joint state between the cut surface formed in each of the first and second cover members and the joint surface of the third cover member. Can be covered. This ensures that workers are injured by burrs generated on each cover member as before, during shipping of assembled pipe joints and pipe connection work using the pipe joints. Can be prevented.

  Further, when the end of the third cover member is cut to form the respective tapered portions on the third cover member, the tips of the respective tapered portions formed by the pressure or heat applied to the end portions are mutually connected. When the third cover member is plastically deformed so as to be separated, even if the tips of the tapered portions protrude outward from the outer peripheral surfaces of the first and second cover members, the tips of the tapered portions are taped. It can be covered with a member. As a result, when shipping the assembled pipe joint or when connecting the pipe, the operator can use his or her hand with the tip of each tapered portion protruding outward from the outer peripheral surface of each of the first and second cover members. Injuries can be reliably prevented.

  The present invention will be described with reference to the illustrated embodiments.

  FIG. 1 shows a connection between a vertical gutter 11 provided in a building and a guide pipe 12 arranged along the ground to guide rainwater flowing in the vertical gutter to a predetermined location such as a drain outlet on the ground. The example which applied this invention to the pipe joint 10 for doing is shown.

  In the illustrated example, the vertical gutter 11 is made of a cylindrical body made of aluminum, and is arranged along the vertical direction of the building. The guide tube 12 is made of aluminum in the same manner as the vertical gutter 11, is formed of a cylindrical body having an inner diameter substantially equal to the inner diameter of the vertical gutter 11, and is arranged along the horizontal direction of the building.

  As shown in FIG. 1, the pipe joint 10 according to the present invention includes a cylindrical joint body 14 to which a vertical rod 11 and a guide pipe 12 are connected.

  In the illustrated example, the joint body 14 is made of aluminum, and is bent at a substantially right angle at the center in the axial direction. Thereby, the longitudinal section of the joint body 14 is L-shaped. The joint main body 14 is arranged so that an axis in one half including the one end 14 a coincides with the axis of the vertical rod 11. One end portion 14 a of the joint body 14 is inserted into the lower end portion 11 a of the vertical rod 11, and the other end portion 14 b of the joint body 14 is inserted into the end portion 12 a of the guide tube 12.

  Furthermore, the pipe joint 10 includes a first cover member 16 and a second cover member 17 that are fitted from one end portion 14 a and the other end portion 14 b of the joint body 14 so as to cover the outer peripheral surface 14 c of the joint body 14. Is provided.

  Each of the first and second cover members 16 and 17 is made of an aluminum cylinder similar to the joint body 14. The shape of the cross section of each cover member 16, 17 is substantially the same as the shape of the cross section of the vertical rod 11 and the guide tube 12, respectively. That is, the inner diameters of the cover members 16 and 17 are substantially equal to the outer diameter of the joint body 14, and the outer diameters of the cover members 16 and 17 are substantially equal to the outer diameters of the vertical rod 11 and the guide tube 12, respectively. When the cover members 16 and 17 are fitted to the joint body 14, the end faces 18a and 17a of the cover members 16 and 17 that face each other at the bent portion of the joint body 14 have the end surfaces 18 of the cover members 16 and 17 respectively. Is cut off so as to be inclined at an angle corresponding to the bending angle of the joint body 14. In the illustrated example, the inclination angle of each end face 18 with respect to the axis of each cover member 16, 17 is set to approximately 45 °. As a result, the cover members 16 and 17 can be joined at the respective end surfaces 18, and the end surfaces are bonded to each other with an adhesive (not shown), for example, so that the axes are perpendicular to each other. Due to the mutual joining of the cover members 16 and 17, the bent portion of the joint body 14 is covered with the cover members 16 and 17. In the illustrated example, the length dimension along the axis of each cover member 16, 17 is the fitting state to the joint body 14 shown in FIG. 1, and the respective ends of the joint body 14 from the respective other end portions 16 b, 17 b. The size is set such that the portions 14a and 14b are exposed. In the illustrated example, oxide films are formed on the outer peripheral surfaces 16c and 17c of the cover members 16 and 17 to prevent corrosion by a conventionally well-known electrolytic method or the like.

  When assembling the pipe joint 10, first, an adhesive (not shown) is applied to the outer peripheral surface 14 c of the joint body 14. Next, the first and second cover members 16 and 17 are fitted to the joint main body 14 from the end portions 14a and 14b, the end surfaces 18 of the cover members are brought into contact with each other, and the end surfaces are described above. The cover members 16 and 17 are joined to each other by bonding with an adhesive. As a result, the cover members 16 and 17 are bonded to the joint main body 14 in a state where the cover members 16 and 17 are joined to each other, whereby the assembly of the pipe joint 10 is completed.

  When connecting the vertical rod 11 and the guide tube 12 to each other using the pipe joint 10, the exposed one end portion 14 a and the other end portion 14 b of the joint main body 14 are respectively connected to the lower end portion 11 a of the vertical rod 11 and the end portion of the guide tube 12. Inserted into 12a, the end surfaces of the vertical rod 11 and the guide tube 12 are brought into contact with the end surfaces of the other end portions 16b, 17b of the first and second cover members 16, 17, respectively. At this time, the cross-sectional shapes of the cover members 16 and 17 are substantially the same as the cross-sectional shapes of the vertical rod 11 and the guide tube 12 as described above. And the outer peripheral surfaces of the cover members 16 and 17 are flush with each other. Thereby, the deterioration of the external appearance by a level | step difference arising in the connection part of the pipe joint 10, the vertical shaft 11, and the guide pipe 12 can be prevented. Thereafter, the joint body 14 and the vertical rod 11 and the guide tube 12 are joined to each other by an adhesive, and the cover members 16 and 17 and the vertical rod 11 and the guide tube 12 are joined to each other by an adhesive. The flange 11 and the guide tube 12 are connected to each other through the tube joint 10.

  The pipe joint 10 according to the present invention includes a tape member so as to cover a portion where the cover members 16 and 17 are joined to each other, that is, between the end portions 16a and 17a including the end surface 18 which is a cut surface of the cover members 16 and 17. 19 is pasted.

  In the illustrated example, the tape member 19 is formed of a resin material that can be easily melted by heating, such as polyolefin such as polyethylene and polypropylene. As is well known, polyolefin is a resin composed of carbon and hydrogen, and does not generate harmful gases such as hydrogen chloride even when burned. Further, the tape member 19 is made of a releasable adhesive such as an acrylic adhesive, for example, on the outer peripheral surfaces 16c and 17c of both the cover members 16 and 17 along the joining line of both the cover members 16 and 17. The cover member is pasted so as to straddle the one end portions 16a, 17a.

  The tape member 19 is affixed to the pipe joint after the pipe joint 10 is assembled. After the pipe joint 10 is transported to the construction site and the connection work of the vertical rod 11 and the guide pipe 12 is completed, the tape member 19 is peeled off from the pipe joint 10. .

  Thus, since the tape member 19 is affixed to the joint part of the end surfaces 18 which are the cut surfaces of the first and second cover members 16 and 17 so as to cover the joint part, each cover Even when the end portions 16a and 17a of the members 16 and 17 are cut and burrs are generated at the cut portions, the burrs generated at the cut portions are cut by the tape member 19 with the cut surfaces, that is, the end surfaces 18 joined to each other. Can be covered.

  As a result, when shipping the assembled pipe joint 10 or when connecting pipes using the pipe joint, the operator may injure his / her hand with the burr generated on the cover members 16 and 17 as in the prior art. Can be reliably prevented.

  Further, by sticking the tape member 19 to the joint portion between the first and second cover members 16 and 17, it is possible to prevent the operator from being injured by the burr generated on the cover members 16 and 17. Therefore, after the pipe joint 10 is assembled, it does not take as much work time as when the cut portions of the cover members 16 and 17 are ground. Therefore, it is possible to easily prevent the operator from being injured by the burr generated on the cover members 16 and 17 without causing a significant increase in the work time as in the prior art.

  When the joint portions between the end faces 18 that are cut surfaces of the cover members 16 and 17 are not covered with the tape member 19, for example, when the pipe members 10 are stacked, the cover members 16 and 17 are stacked. Other pipe joints 10 may be damaged by burrs formed at the cut portions. In particular, as in this embodiment, the cover members 16 and 17 are made of aluminum, and an oxide film for preventing corrosion is formed on the outer peripheral surfaces 16c and 17c of the cover members 16 and 17. In this case, if the outer peripheral surfaces 16c and 17c of the cover members 16 and 17 are scratched, the function of preventing the corrosion of the oxide film is reduced, and the cover members 16 and 17 are corroded.

  On the other hand, according to the present embodiment, as described above, the burrs generated at the cut portions of the cover members 16 and 17 can be covered with the tape member 19, so that, for example, when a plurality of pipe joints 10 are transported. Even when they are stacked, it is possible to reliably prevent the other pipe joint 10 from being damaged by burrs generated in the cover members 16 and 17. Thereby, it is possible to reliably prevent the deterioration of the function of preventing the corrosion of the oxide film due to the outer peripheral surfaces 16c and 17c of the cover members 16 and 17 being scratched.

  Furthermore, as described above, since the tape member 19 is affixed with a re-peelable adhesive, when the tape member 19 is peeled off from the adherend surface, no adhesive residue remains on the adherend surface. Can be peeled off.

  Thereby, when the tape member 19 attached to the joint portion of the cover members 16 and 17 is peeled off after pipe connection, the work for removing the tape member 19 can be simplified.

  In addition, when the tape member 19 attached to the joint portion of the cover members 16 and 17 is peeled off, it is possible to reliably prevent deterioration of the appearance due to adhesive remaining on the outer peripheral surfaces 16c and 17c of the cover members 16 and 17. can do.

  Further, as described above, since the tape member 19 is formed of a resin that can be easily melted by heating, it is possible to newly use the molten resin material by melting the used tape member 19. The tape member 19 can be manufactured.

  Thereby, since the used tape member can be reused, it is possible to reliably reduce the manufacturing cost. In particular, when the tape member 19 is made of polyolefin that does not generate harmful gases such as hydrogen chloride when burned, as in this embodiment, air pollution occurs when the tape member 19 is heated. Do not invite.

  In the present embodiment, the example in which the present invention is applied to the pipe joint 10 in which the joint main body 14 is bent at a substantially right angle is shown, but instead, the pipe in which the joint main body is bent at an acute angle or an obtuse angle than 90 °. The present invention can be applied to a joint.

  In the present embodiment, the joint body 14 and the cover members 16 and 17 are made of metal, but instead, the joint body 14 and the cover members 16 and 17 are made of, for example, a synthetic resin material. Can be molded.

  Furthermore, in this embodiment, an example in which the present invention is applied to a pipe joint 10 for connecting a vertical gutter 11 provided in a building and a guide pipe 12 for guiding rainwater flowing in the vertical gutter to a drain outlet. However, instead of this, the present invention can be applied to a pipe joint for connecting pipe members other than the vertical gutter 11 and the guide pipe 12 to each other.

  Further, in this embodiment, the pipe joint 10 for connecting the vertical gutter 11 and the guide pipe 12 for guiding the rainwater flowing in the vertical gutter to a predetermined place such as a drain outlet on the ground, Although the example to which the present invention is applied has been shown, instead of this, as shown in FIG. 2, the two vertical fences 21 and 22 and the vertical fences 21 and 22 from the eaves provided along the eaves (not shown) of the building are shown. The present invention can be applied to the pipe joint 20 for connecting the callout 23 for guiding rainwater to each other.

  The pipe joint 20 shown in FIG. 2 includes a joint body 24 to which the vertical rods 21 and 22 and the call shaft 23 are connected.

  In the illustrated example, the joint main body 24 is made of aluminum, and the upper end 25a and the lower end 25b are respectively inserted into the end portions 21a and 22a of the vertical rods 21 and 22, respectively. The tube portion 26 has a cylindrical tube portion 26 that extends from the peripheral wall of the tube portion to the outside of the straight tube portion 25, and has a tip portion 26 a inserted into the end portion 23 a of the caller 23. In the illustrated example, the cylindrical portion 26 is formed between the upper end portion 25a and the lower end portion 25b of the straight pipe portion so that the axis thereof is perpendicular to the axis line of the straight pipe portion 25. 24 is T-shaped as a whole. The base end portion 26c of the cylindrical portion 26 tapers toward both side portions 25d of the straight pipe portion 25 (one side portion 25d is shown in FIG. 2).

  Further, the pipe joint 20 includes a cylindrical first cover member 28 and a second cover member fitted from the upper end portion 25a and the lower end portion 25b of the straight pipe portion 25 so as to cover the outer peripheral surface 25c of the straight pipe portion 25. Cover member 29 and a cylindrical third cover member 30 fitted to the cylindrical portion 26 so as to cover the outer peripheral surface 26b of the cylindrical portion 26. Each cover member 28, 29, 30 is made of aluminum.

  The cross-sectional shape of each of the first and second cover members 28 and 29 is substantially equal to the cross-sectional shape of each of the vertical rods 21 and 22. That is, the inner diameters of the first and second cover members 28 and 29 are substantially equal to the outer diameter of the straight pipe portion 25, respectively, and the outer diameters of the first and second cover members 28 and 29 are respectively vertical. It is almost equal to the outer diameter of the flanges 21 and 22. The first and second cover members 28 and 29 are joined to each other by an adhesive (not shown) at the end surfaces 31 of the one end portions 28a and 29a that are in contact with each other in a fitted state with the straight pipe portion 25. Further, the one end portions 28a and 29a of the first and second cover members 28 and 29 are cylindrical portions so as to allow the cylindrical portion 26 to be exposed from the first and second cover members 28 and 29, respectively. 26 is cut along the periphery of the base end portion 26c. Thereby, the cut surface 32 is formed in each one end part 28a, 29a of each of the 1st and 2nd cover members 28 and 29, respectively. In a state where the first and second cover members 28 and 29 are joined to each other, a pair of corner portions 33 (see FIG. 3) facing each other are defined by the cut surfaces 32 of the cover members.

  The shape of the cross section of the third cover member 30 is substantially equal to the shape of the cross section of the caller 23. That is, the inner diameter of the third cover member 30 is substantially equal to the outer diameter of the cylindrical portion 26, and the outer diameter of the third cover member 30 is substantially equal to the outer diameter of each of the vertical rods 21 and 22. The one end portion 30a located on the straight pipe portion 25 side of the third cover member 30 is tapered from the one end portion 30a toward the distal end of the proximal end portion 26c so as to cover the proximal end portion 26c of the cylindrical portion 26 up to the distal end. A pair of tapered portions 34 are formed. Each tapered portion 34 abuts against each of the cut surfaces 32 of the first and second cover members 28 and 29 in a state in which the third cover member 30 is fitted to the cylindrical portion 26, and comes into contact with each cut surface. It has the joint surface 35 joined by the adhesive agent. The tip 34 a of each tapered portion 34 engages with each corner 33 defined by each cut surface 32 of each of the first and second cover members 28 and 29. Each tapered portion 34 cuts the one end portion 30a of the third cover member 30 along a pair of planes that pass through a pair of mutually opposing points on the end surface of the one end portion and intersect each other at each point. It is formed.

  As shown in FIG. 3, the pipe joint 20 assembled by attaching the cover members 28, 29, and 30 to the joint body 24 includes portions cut at the time of forming the cover members 28, 29, and 30. A tape member 19 is attached so as to cover the joint portion. In the illustrated example, the tape member 19 includes a joint portion joined by the joint surfaces 31 of the first and second cover members 28 and 29, and cut surfaces of the first and second cover members 28 and 29. The outer peripheries of the first, second and third cover members 28, 29, 30 so as to cover each corner 33 defined by 32 and the joint portion of each tapered portion 34 of the third cover member 30. It is affixed on the surfaces 28b, 29b, 30b.

  As a result, when the first and second cover members 28 and 29 are molded, the third end portions 28a and 29a of the respective cover members are cut or the third cover members 30 are formed with the tapered portions 34 to form the tapered portions 34. Even when a burr is generated at each cut portion when the one end portion 30 a of the cover member 30 is cut, the burr generated at the cut portion can be covered with the tape member 19.

  Therefore, when the assembled pipe joint 10 is shipped or when a pipe is connected using the pipe joint, the worker is injured by the burr generated in each cover member 28, 29, 30 as in the prior art. This can be surely prevented.

  When one end portion 30a of the third cover member 30 is cut to form each tapered portion 34 at one end portion 30a of the third cover member 30, each formed by pressure, heat, etc. applied to the one end portion When the third cover member 30 is plastically deformed so that the tips 34 a of the tapered portions 34 are separated from each other, each corner portion is joined when the third cover member 30 is joined to the first and second cover members 28 and 29. 33, the tip 34a of each tapered portion 34 cannot be fitted together, and the tip 34a of each tapered portion 34 protrudes outward from the outer peripheral surfaces 28b, 29b of the first and second cover members 28, 29. It may end up.

  On the other hand, according to the example shown in FIG. 2, even if the tip 34a of each tapered portion 34 protrudes outward from the outer peripheral surfaces 28b and 29b of the first and second cover members 28 and 29, The tip 34 a of each tapered portion 34 can be covered with the tape member 19. As a result, the tapered portions 34 projecting outward from the outer peripheral surfaces 28b, 29b of the first and second cover members 28, 29 at the time of shipping work of the assembled pipe joint 10, pipe connection work, or the like. It is possible to reliably prevent the operator from being injured by the tip 34a.

  In the example illustrated in FIG. 2, the joint main body 24 and the cover members 28, 29, and 30 are each made of metal. Instead, the joint main body 24 and the cover members 28, 29, and 30 are each replaced with a metal. For example, it can be molded from a synthetic resin material.

  Moreover, in the example shown in FIG. 2, the two vertical gutters 21 and 22 provided in the building, and the call 23 for guiding rainwater from the eaves gutter provided along the eaves of the building to the vertical gutters 21 and 22 are provided. Although the example which applied this invention to the pipe joint 20 for mutually connecting was shown, it replaces with this and this invention is applied to the pipe joint for connecting pipe members other than the vertical rods 21 and 22 and the caller 23. Can be applied.

  In the example shown in FIGS. 1 and 2, an example in which the tape member 19 is made of polyolefin is shown, but instead, for example, a vinyl tape member can be applied to the present invention.

  Moreover, in the example shown in FIG.1 and FIG.2, the tape member 19 can be comprised with a foam. In this case, when the tape member 19 is formed, the foamed tape member 19 can be formed by including a conventionally well-known foaming agent such as sodium hydrogen carbonate in the resin material to be the tape member 19.

  Since the tape member is made of a foam, for example, when the pipe joints 10 and 20 are stacked during transportation, the pipe joints 10 and 20 serve as cushions for absorbing the load received from the other pipe joints 10 and 20. Can be assigned to the tape member 19. Thereby, it can suppress reliably that each piled pipe joint 10 and 20 deform | transforms by the load which receives from the other pipe joint 10 and 20, or breaks.

1 is a perspective view schematically showing a pipe joint according to the present invention. It is a disassembled perspective view which shows schematically the pipe joint which concerns on another Example. It is a perspective view which shows roughly the assembly completion state of the pipe joint which concerns on another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pipe joint 14,24 Joint main body 18 End surface 16 1st cover member 17 2nd cover member 19 Tape member 25 Straight pipe part 25d Both sides part 26 Cylindrical part 26c Base end part 30 3rd cover member 32 Cut surface 34 Tapered Part 35 joint surface

Claims (2)

  A tubular joint body that is bent at a predetermined angle and connects pipe members to each other, and fitted to the joint body from each end so as to cover the outer peripheral surface of the joint body, In order to cover the bent portion, each of the end portions is cut off at an angle corresponding to the bending angle of the joint body so that the end portions of the end portions that face each other at the bent portion can be joined to each other. A cover member and a second cover member are provided, and a tape member is affixed to a joint portion between the first and second cover members so as to cover the joint portion. Pipe fittings.   It has a cylindrical straight pipe part and a cylindrical part protruding outward from the peripheral wall of the straight pipe part, and the base end part of the cylindrical part tapers toward both sides of the straight pipe part A tubular main cover part that is fitted to the straight pipe part from each end so as to cover the outer peripheral surface of the joint main body and the straight pipe part and is joined to each other at the end faces of the opposite ends. And a first cover member and a second cover member, each of which is a second cover portion, the end portions of which are cut along the peripheral edge of the base end portion of the cylindrical portion to allow the cylindrical portion to be exposed. The joint is fitted to the tubular part so as to cover the outer peripheral surface of the tubular part, and joined to the cut surface of each of the first and second cover members at the end located on the straight pipe part side. And a third cover member having a surface and having a pair of tapered portions that cover the base end portion of the cylindrical portion up to the respective distal ends thereof. What the first, the mutual junction of the second and third of each cover member, a pipe joint, wherein a tape member is adhered to cover the joint portion.

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