JP4719019B2 - Pipe fitting - Google Patents

Description

  The present invention relates to a T-shaped pipe joint for connecting pipe members to each other.

  2. Description of the Related Art Conventionally, a pipe joint for connecting, for example, two vertical fences provided in a building along a vertical direction and callouts provided below the eaves of a building is known (see, for example, Patent Document 1).

  This pipe joint includes a joint body made of, for example, aluminum. The joint body has a cylindrical straight pipe part whose both ends are inserted into the ends of the vertical pipes, and projects from the peripheral wall of the straight pipe part to the outside of the straight pipe part. It has a cylindrical tube portion to be inserted, and has a T shape as a whole. The base end portion of the tube portion is tapered toward both sides of the straight pipe portion. Further, the pipe joint is a cylindrical first cover fitted to the straight pipe portion from each end so as to cover the outer peripheral surface of the straight pipe portion and to expose each end of the straight pipe portion. A member, a second cover member, and a cylindrical third cover member that is fitted to the cylindrical portion so as to cover the outer peripheral surface of the cylindrical portion and to expose the distal end portion of the cylindrical portion.

  Each cover member is made of a flexible metal such as aluminum. Each of the first and second cover members has a cross-sectional shape that is substantially the same as the cross-sectional shape of each vertical gutter, and is joined at the end surfaces of the end portions facing each other. The end portions of the first and second cover members are partially cut along the periphery of the base end portion of the tube portion so as to allow the tube portion to be exposed. The third cover member has the same cross-sectional shape as the cross-sectional shape of the call, and is joined to each cut surface of each of the first and second cover members at the end located on the straight pipe side. And a pair of tapered portions that cover the proximal end portion of the cylindrical portion up to the distal end thereof. Each tapered portion cuts the end portion of the cylindrical member serving as the third cover member along a pair of planes passing through a pair of mutually opposing points on the end surface of the end portion and intersecting each other at each point. It is formed by.

When connecting each downpipe and callout to each other via a pipe joint, insert each end of the straight pipe part of the joint body to which each cover member joined to each other is inserted into the end of each vertical pipe, The end surface of each vertical rod is brought into contact with the end surface of each cover member located on the side opposite to the end surface. Furthermore, the front end portion of the cylindrical portion is inserted into the end portion of the caller, and the end surface of the caller is brought into contact with the end surface of the third cover member. At this time, each cover member has a cross-sectional shape that is substantially the same as the cross-sectional shape of each vertical gutter and call, so that the outer peripheral surface of each vertical gutter and the outer peripheral surface of each of the first and second cover members Are substantially flush, and the outer circumferential surface of the call and the outer circumferential surface of the third cover member are substantially flush. Thereby, the deterioration of the external appearance by a level | step difference arising in the connection part of a pipe joint and each collar can be prevented.
Noto 2536741 (page 5-6, FIG. 1)

  However, for example, when forming the third cover member, the pressure or heat applied to the end of the cylindrical member when the end of the cylindrical member serving as the third cover member is cut to form each tapered portion. When the third cover part is plastically deformed so that the tips of the tapered parts are separated from each other, the first and second cover members are joined to the first and second cover members. The tip of each tapered portion cannot be fitted to each corner defined by the two cut surfaces of both cover portions, and the tip of each tapered portion is outward from the outer peripheral surface of each of the first and second cover members. It protrudes to. For this reason, during shipping work of the assembled pipe joint or pipe connection work using the pipe joint, an operator can manually operate at the tips of the tapered portions protruding from the outer peripheral surfaces of the first and second cover members. There is a risk of injury.

  Accordingly, an object of the present invention is to provide a tube that can prevent the tips of the tapered portions formed on the third cover member from projecting outward from the outer peripheral surfaces of the first and second cover members. It is to provide a joint.

  In order to solve the above problems, the invention according to claim 1 includes a cylindrical straight pipe part and a cylindrical part protruding outward from the peripheral wall of the straight pipe part. And a fitting main body tapering toward both sides of the straight pipe portion, and the straight pipe portion fitted from the respective end portions so as to cover the outer peripheral surface of the straight pipe portion, and facing each other. A cylindrical first cover portion and a second cover portion that are joined to each other at the end face of the end portion, and each end portion is on the peripheral edge of the base end portion of the cylindrical portion to allow exposure of the cylindrical portion. A first cover member and a second cover member cut along the outer periphery of the tube portion, and the end portion located on the straight tube portion side is fitted to the tube portion so as to cover the outer peripheral surface of the tube portion; A pair of tapers having joint surfaces that are respectively joined to the cut surfaces of the first and second cover members and covering the base end portion of the cylindrical portion up to the respective distal ends thereof Each of the tapered portions in a fitting state of the third cover member to the tubular portion on the outer peripheral surface of the tubular portion. A convex portion is formed for expanding the end portion of the third cover member so that the tip end of the third cover member approaches the outer peripheral surface of the cylindrical portion.

  The invention according to claim 2 is the invention according to claim 1, wherein the first and second cover members are fitted to the outer peripheral surface of the straight pipe portion. The end portions of the first and second cover members so that a pair of corner portions defined by the end surface and the cut surface of each cover member are separated from the outer peripheral surface of the straight pipe portion, respectively. It is characterized in that a convex part is formed for pushing out.

  According to the first aspect of the present invention, each taper formed at the end portion of the third cover member on the outer peripheral surface of the tubular portion of the joint main body in the fitted state of the third cover member to the tubular portion. When the third cover member is fitted to the cylindrical portion, the third portion is formed when the convex portion is formed to push the end portion so that the tip of the portion approaches the outer peripheral surface of the cylindrical portion. The end of the third cover member is pushed out so that the tips of the tapered portions approach each other by the outward spreading force of the third cover member received by the end of the cover member from the convex portion Can do.

  Thereby, when the end portion of the cylindrical member serving as the third cover member is cut to form each tapered portion at the time of forming the third cover member, the pressure applied to the end portion of the cylindrical member Even if the third cover member is plastically deformed so that the tips of the tapered portions are separated from each other by heat or the like, the tips of the tapered portions are forced to approach the outer peripheral surface of the cylindrical portion by the spreading action of the convex portions. By making it, it can prevent reliably that the front-end | tip of each taper part protrudes to the outward from the outer peripheral surface of both 1st and 2nd cover members.

  Therefore, when shipping the assembled pipe joint or pipe connection work, the worker is provided with the tip of each tapered portion projecting outward from the outer peripheral surface of each of the first and second cover members as in the prior art. Can surely suppress injuries to the hands.

  According to the second aspect of the present invention, the end surface of each cover member and the cut surface are defined in the fitted state of the first and second cover members to the straight pipe portion on the outer peripheral surface of the straight pipe portion. Since the convex portions for expanding the end portions of the first and second cover members are formed so that the pair of corner portions are separated from the outer peripheral surface of the straight pipe portion, the first and first When each of the two cover members is fitted to the straight pipe portion, each corner portion is forcibly separated from the outer peripheral surface of the straight pipe portion, whereby the tip of each tapered portion is defined by each cut surface. The first and second cover members and the straight pipe portion can be fitted in each corner. Thereby, it can prevent more reliably that the front-end | tip of each taper part protrudes outward from the outer peripheral surface of each 1st and 2nd cover member.

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

  FIG. 1 shows two vertical fences 11 and 12 provided in a building and a call 13 for guiding rainwater from an eaves not shown provided along the eaves of the building to the vertical fences 11 and 12. The example which applied this invention to the pipe joint 10 for this is shown.

  In the example shown in the figure, the vertical rods 11 and 12 are each formed of a cylindrical body made of aluminum, and are arranged along the vertical direction with the axes aligned with each other. The call 13 is formed of aluminum in the same manner as the vertical fences 11 and 12, is formed of a cylindrical body having an inner diameter substantially equal to the inner diameter of the vertical fences 11 and 12, 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 joint body 14 to which the vertical rods 11 and 12 and the call bar 13 are connected.

  In the illustrated example, the joint body 14 is made of aluminum, and both ends 15a and 15b are respectively inserted into the ends 11a and 12a of the vertical rods 11 and 12, respectively. It protrudes from the peripheral wall to the outside of the straight pipe portion 15, and the tip end portion 16 a has a cylindrical tube portion 16 that is inserted into the end portion 13 a of the call 13. In the illustrated example, the cylindrical portion 16 is formed in the middle between both end portions 15a and 15b of the straight pipe portion so that the axis thereof is perpendicular to the axis of the straight pipe portion 15. The whole is T-shaped. The base end portion 16c of the cylindrical portion 16 is tapered toward both side portions 15d of the straight pipe portion 15 (one side portion 15d is shown in FIG. 1). Grooves 17 are formed on the outer peripheral surface 15c of each end portion 15a, 15b of the straight pipe portion 15 and the outer peripheral surface 16b of the distal end portion 16a of the cylindrical portion 16 so as to extend in the circumferential direction of the straight pipe portion 15 and the cylindrical portion 16, respectively. Yes. An adhesive (not shown) for bonding a first cover member 18, a second cover member 19, and a third cover member 20, which will be described later, to the straight pipe portion 15 and the cylindrical portion 16, respectively, is injected into each groove 17. The The joint body 14 is disposed between the ends 11a and 12a of the vertical rods 11 and 12 so that the axis of the straight pipe portion 15 coincides with the axis of the vertical rods 11 and 12.

  Furthermore, the pipe joint 10 is a cylinder fitted from each of the upper end, that is, the upper end 15a and the lower end, that is, the lower end 15b of the straight pipe portion 15 so as to cover the outer peripheral surface 15c of the straight pipe portion 15. The first cover member 18 and the second cover member 19 described above, and the cylindrical third cover member 20 fitted to the cylindrical portion 16 so as to cover the outer peripheral surface 16b of the cylindrical portion 16; Is provided. Each cover member 18, 19 and 20 is made of a flexible metal such as aluminum.

  The shape of the cross section of each of the first and second cover members 18 and 19 is substantially equal to the shape of the cross section of each of the vertical rods 11 and 12, respectively. That is, the inner diameters of the first and second cover members 18 and 19 are substantially equal to the outer diameter of the straight pipe portion 15, respectively, and the outer diameters of the first and second cover members 18 and 19 are respectively vertical. It is almost equal to the outer diameter of the flanges 11 and 12. The first and second cover members 18 and 19 are joined to each other by an adhesive (not shown) at the end surfaces 21 of the one end portions 18a and 19a that are in contact with each other in a fitted state with the straight pipe portion 15. In addition, the one end portions 18a and 19a of the first and second cover members 18 and 19 are cylindrical portions so as to allow the cylindrical portion 16 to be exposed from the first and second cover members 18 and 19, respectively. 16 is cut along the periphery of the base end portion 16c. Thereby, the cut surface 22 is formed in each end part 18a, 19a of each of the 1st and 2nd cover members 18 and 19, respectively. By forming each cut surface 22, a pair of corner portions 21 a is defined at each end surface 18 a, 19 a of each of the first and second cover members 18, 19 by the respective cut surfaces 22 and end surfaces 21. Yes. In addition, in a state where the first and second cover members 18 and 19 are joined to each other, a pair of corner portions 23 (see FIG. 3) facing each other are defined by the cut surfaces 22 of the cover members. The length dimension along each axis line from each joint surface 21 of each of the first and second cover members 18 and 19 to the end surface of each of the other end portions 18c and 19c is as shown in FIG. The upper end portion 15a and the lower end portion 15b of the straight pipe portion 15 are set to be exposed when they are joined to each other in the fitted state.

  The shape of the cross section of the third cover member 20 is substantially equal to the shape of the cross section of the call 13. In other words, the inner diameter of the third cover member 20 is substantially equal to the outer diameter of the cylindrical portion 16, and the outer diameter of the third cover member 20 is substantially equal to the outer diameter of the vertical rods 11 and 12. As shown in FIG. 2, the one end 20 a located on the straight pipe portion 15 side of the third cover member 20 has a base end 16 c from the one end 20 a to cover the base end 16 c of the cylindrical portion 16 to the tip. A pair of taper portions 24 are formed which taper toward the tip. Each tapered portion 24 abuts against each of the cut surfaces 22 of the first and second cover members 18 and 19 in the fitted state of the third cover member 20 to the cylindrical portion 16, respectively. It has the joint surface 25 joined by the adhesive agent. The tip 24a of each tapered portion 24 engages with each corner 23 defined by each cut surface 22 of each of the first and second cover members 18, 19. Each tapered portion 24 passes through an end portion of a cylindrical member (not shown) that becomes the cover member when the third cover member 20 is formed, through a pair of points facing each other on the end surface of the end portion, and at each point. It is formed by cutting along a pair of planes that intersect each other. By forming each tapered portion 24, as shown in FIG. 1, the upper edge 20b on the upper side of the cylindrical portion 16 of the third cover member 20 in the fitted state of the third cover member 20 to the cylindrical portion 16, and The length dimension in the extending direction of the lower edge 20 c on the lower side is shorter than the length dimension in the extending direction of each side edge 20 d on both sides of the cylindrical portion 16 of the third cover member 20. In the illustrated example, the length of the upper edge 20b, the lower edge 20c, and the side edges 20d of the third cover member 20 in the extending direction is such that the distal end portion 16a of the cylindrical portion is fitted to the cylindrical portion 16. The exposure size is set.

  In the pipe joint 10 according to the present invention, the distal end 24a of each tapered portion 24 is respectively connected to the outer peripheral surface 16b of the tubular portion 16 of the joint main body 14 in the fitted state of the third cover member 20 to the tubular portion 16. A convex portion 26 is formed for expanding the one end portion 20a of the third cover member 20 so as to approach the outer peripheral surface 16b of the sixteen.

  In the illustrated example, the convex portion 26 has a rib shape extending along the axis of the cylindrical portion 16 and protruding outward in the radial direction of the cylindrical portion 16, and the third cover member 20 to the cylindrical portion 16 is formed. It is formed in the vicinity of the straight pipe portion 15 at a position corresponding to the upper edge 20b and the lower edge 20c of the cover member in the fitted state.

  Further, the outer peripheral surface 15 c of the straight pipe portion 15 is connected to each corner portion 23 in the joined state of the first and second cover members 18 and 19 to the straight pipe portion 15. A convex portion 27 is formed to push the one end portions 18a, 19a of the first and second cover members 18, 19 apart from each other (FIG. 1 shows one convex portion 27). ing.).

  In the illustrated example, the convex portion 27 has a rib shape extending along the axis of the straight pipe portion 15 and projecting outward in the radial direction of the straight pipe portion 15, and the first and second cover members 18. , 19 in the joined state, each of the cover members 18, 19 is placed at a position corresponding to each corner 21 a defined by the end surface 21 and the cut surface 22 of each end 18 a, 19 a of each cover member. It is formed so as to straddle the one end portions 18a and 19a.

  When assembling the pipe member, first, the adhesive is injected into the grooves 17 formed in the upper end portion 15a and the lower end portion 15b of the straight pipe portion 15 of the joint body 14. Subsequently, as shown in FIG. 3, the first cover member 18 and the second cover member 19 are fitted to the straight pipe portion 15 from the upper end portion 15 a and the lower end portion 15 b, respectively. The end surfaces 21 of the one end portions 18a and 19a are brought into contact with each other. At this time, on the outer peripheral surface 15c of the straight pipe portion 15, as described above, the convex portion 27 is provided at each end portion 18a of each cover member at a position corresponding to each corner portion 21a of each cover member 18, 19. Since it is formed so as to straddle 19a, the outer diameter of the portion of each straight pipe portion 15 where the respective convex portions 27 are formed is increased by the amount of each convex portion 27 being formed. As a result, when the first and second cover members 18 and 19 are fitted into the straight pipe portion 15, the outer portions of the cover members 18 and 19 are moved from the convex portions 27 to the portions of the cover members 18 and 19. A pressing force toward the direction acts. Thereby, the one end portions 18a and 19a of the cover members are spread so that the corner portions 21a of the first and second cover members 18 and 19 are separated from the outer peripheral surface 15c of the straight tube portion 15. Therefore, in a state where the end surfaces 21 of the cover members 18 and 19 are in contact with each other, the corners 23 defined by the cut surfaces 22 of the cover members 18 and 19 are separated from the outer peripheral surface 15c of the straight pipe portion 15. . Thereafter, the joining surfaces 21 of the first and second cover members 18 and 19 are joined by the adhesive. Thus, the first and second cover members 18 and 19 are bonded to the straight pipe portion 15 of the joint body 14 in a state where they are joined to each other.

  Next, the adhesive is injected into the groove 17 formed in the distal end portion 16 a of the tubular portion 16 of the joint body 14. Subsequently, as shown in FIG. 4, the third cover member 20 is fitted to the cylindrical portion 16 from the tip end portion 16 a, and the joint surfaces 25 of the tapered portions 24 of the cover member are respectively set to the first and second portions. The taper portions 24 are fitted to the corner portions 23 by bringing them into contact with the cut surfaces 22 of the cover members 18 and 19. At this time, as described above, the convex portions 26 are formed on the outer peripheral surface 16b of the cylindrical portion 16 in the vicinity of the straight pipe portion 15 at positions corresponding to the upper edge 20b and the lower edge 20c of the third cover member 20, respectively. Thus, the outer diameter of the portion of the cylindrical portion 16 where the convex portions 26 are formed is increased by the amount of the convex portions 26 formed. Thereby, when the 3rd cover member 20 is fitted to the cylinder part 16, it faces outward of the 3rd cover member 20 from each convex part 26 to the upper edge 20b and the lower edge 20c of the 3rd cover member 20. All pressing force is applied. As a result, the one end portion 20a of the third cover member 20 is expanded so that the upper edge 20b and the lower edge 20c of the third cover member 20 are separated from the outer peripheral surface 16b of the cylindrical portion 16, and the third cover member The one end portion 20a of the third cover member 20 is bent and deformed so that the cross section of the one end portion 20a of the 20 forms an ellipse having a minor axis with a line segment connecting the tips 24a of the tapered portions 24. Therefore, in the state where each joint surface 25 of each tapered portion 24 of the third cover member 20 is in contact with the cut surface 22 of each of the first and second cover members 18, 19, the tip 24 a of each tapered portion 24 is It approaches the outer peripheral surface 16b of the cylindrical portion 16. Then, each joint surface 25 of each taper part 24 of the 3rd cover member 20 is joined to each cut surface 22 of each of the 1st and 2nd cover members 18 and 19 with the said adhesive agent. As a result, the third cover member 20 is bonded to the straight pipe portion 15 of the joint body 14 in a state where the third cover member 20 is joined to the first and second cover members 18 and 19, whereby the pipe joint 10 can be assembled. Complete.

  When connecting the vertical gutters 11 and 12 and the call bar 13 to each other using the pipe joint 10, the exposed upper end 15a and lower end 15b of the straight pipe portion 15 are respectively connected to the end portions 11a and 11a of the vertical gutters 11 and 12, respectively. It inserts in 12a, and makes the end surface of this edge part contact | abut to the end surface of each other end part 18c, 19c of each 1st and 2nd cover members 18 and 19. FIG. Further, the exposed tip end portion 16a of the cylindrical portion 16 is inserted into the end portion 13a of the call shaft 13, and the end face of the end portion is brought into contact with the end face of the other end portion 20e (see FIG. 1) of the third cover member 20. Make contact. At this time, the cross-sectional shapes of the first, second, and third cover members 18, 19, and 20 are substantially the same as the cross-sectional shapes of the vertical rods 11 and 12 and the call shaft 13 as described above. Therefore, the outer peripheral surfaces of the vertical rods 11 and 12 and the outer peripheral surfaces of the first and second cover members 18 and 19 are flush with each other, and the outer peripheral surface of the call 13 and the third cover member 20. Is flush with the outer peripheral surface. Thereby, the deterioration of the external appearance by a level | step difference arising in the connection part of the pipe joint 10 and each collar can be prevented. Thereafter, the upper end portion 15a and the lower end portion 15b of the straight pipe portion 15 are respectively joined to the end portions 11a and 12a of the vertical rods 11 and 12 by an adhesive, and the distal end portion 16a of the tubular portion 16 is joined to the end portion 13a of the call shaft 13. The cover members 18, 19, 20 and the flanges 11, 12, 13 are bonded to each other with an adhesive, whereby the flanges are connected to each other via the pipe joint 10.

  According to the present embodiment, as described above, one end of the third cover member 20 is fitted to the outer peripheral surface 16b of the tubular portion 16 of the joint body 14 with the third cover member 20 fitted to the tubular portion 16. Since a convex portion 26 is formed for expanding the one end portion 20a so that the tip 24a of each tapered portion 24 formed on the portion 20a approaches the outer peripheral surface 16b of the cylindrical portion 16, a third cover is formed. When the member 20 is fitted to the cylindrical portion 16, each tapered portion is pressed by the outward pressing force of the third cover member 20 received by the one end portion 20 a of the third cover member 20 from the convex portion 26. The one end portion 20a of the third cover member 20 can be pushed wide so that the tips 24a of the 24 come close to each other.

  Thus, when the end of the cylindrical member that becomes the third cover member 20 is cut to form each tapered portion 24 when the third cover member 20 is formed, the end is provided to the end of the cylindrical member. Even if the third cover member 20 is plastically deformed so that the tips 24a of the respective tapered portions 24 are separated from each other due to applied pressure, heat, or the like, the tips 24a of the respective tapered portions 24 are formed into cylinders by the expanding action of the convex portions 26 By forcibly approaching the outer peripheral surface 16b of the portion 16, each tapered portion 24 is inserted into each corner 23 defined by the respective cut surfaces 22 formed in the first and second cover members 18, 19. The tip 24a can be fitted.

  Accordingly, when the assembled pipe joint 10 is shipped or when pipes are connected, the tapered portions 24 project outward from the outer peripheral surfaces of the first and second cover members 18 and 19 as in the prior art. It is possible to reliably prevent the operator from injuring the hand by the tip 24a.

  Further, as described above, the first and second cover members are fitted to the outer peripheral surface 15c of the straight pipe portion 15 with the first and second cover members 18 and 19 fitted to the straight pipe portion 15. Each of the first and second cover members 18 and 19 is separated from the outer peripheral surface 15c of the straight pipe portion 15 so that each corner portion 21a defined by each end surface 21 and each cut surface 22 of each of the 18 and 19 is separated. Since the convex portions 27 are formed to spread the one end portions 18a and 19a facing each other, each of the first and second cover members 18 and 19 is fitted to the straight pipe portion 15 respectively. By forcibly separating the corner portion 21a from the outer peripheral surface 15c of the straight pipe portion 15, the tip 24a of each tapered portion 24 is connected to each corner 23 with the first and second cover members 18, 19 and the straight pipe. It can be fitted with the part 15. Thereby, it can prevent more reliably that the front-end | tip 24a of each taper part 24 protrudes outward from the outer peripheral surface of each of the 1st and 2nd cover members 18 and 19. FIG.

  In the present embodiment, the length dimensions along the respective axis lines from the end surfaces 21 of the first and second cover members 18 and 19 to the end surfaces of the other end portions 18c and 19c are fitted into the straight pipe portion 15. The upper end portion 15a and the lower end portion 15b of the straight pipe portion 15 are set to be exposed when they are joined to each other in the combined state, and the upper edge 20b, the lower edge 20c, and the respective sides of the third cover member 20 are set. Although the example in which the length dimension in the extending direction of the edge 20d is set to a size that exposes the distal end portion 16a of the cylindrical portion in the fitted state to the cylindrical portion 16 is shown, instead of this, FIG. As shown in FIG. 4, the length of each of the first and third cover members 18 and 20 is determined so that each cover member extends from the upper end portion 15a of the straight tube portion 15 and the tip portion 16a of the tube portion 16 to the straight tube portion. 15 and the cylindrical portion 16 are set so as to partially protrude outward in the axial direction. Can. In this case, other pipe joints 10 are respectively provided on the portion of the first cover member 18 protruding from the upper end portion 15 a of the straight pipe portion 15 and the portion of the third cover member 20 protruding from the tip portion 16 a of the cylindrical portion 16. By inserting the exposed lower end portion 15b of the straight pipe portion 15, the pipe joints 10 can be connected to each other.

  In the present embodiment, the projections 26 and 27 formed on the cylindrical portion 16 and the straight pipe portion 15 of the joint body 14 are each formed in a rib shape, but instead, for example, The position corresponding to the upper edge 20b and the lower edge 20c of the third cover member 20 of the cylindrical portion 16 and the corner portions 21a of the first and second cover members 18 and 19 of the straight pipe portion 15 correspond to the positions. By gradually increasing the plate thicknesses of the cylindrical portion 16 and the straight pipe portion 15 toward the position, convex portions can be formed on the cylindrical portion 16 and the straight pipe portion 15, respectively.

  Furthermore, in the present embodiment, the joint body 14 and the cover members 18, 19, and 20 are each made of metal, but instead, the joint body 14 and the cover members 18, 19, and 20 are each made of metal. For example, it can be molded from a synthetic resin material.

  In this embodiment, the two vertical gutters 11 and 12 provided in the building and the call 13 for guiding rainwater from the eaves provided along the eaves of the building to the vertical gutters 11 and 12 are connected to each other. Although the example which applied this invention to the pipe joint 10 for performing was shown instead, this invention is applied to the pipe joint for connecting pipe members other than the vertical rods 11 and 12 and the caller 13 instead. be able to.

1 is an exploded perspective view schematically showing a pipe joint according to the present invention. It is a perspective view which shows the 3rd cover member based on this invention roughly. It is a perspective view which shows roughly the state by which each 1st and 2nd cover member was mounted | worn with the coupling main body which concerns on this invention. It is a perspective view which shows roughly the assembly completion state of the pipe joint which concerns on this invention. It is a perspective view which shows roughly the pipe joint which concerns on another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pipe joint 14 Joint main body 15 Straight pipe part 15a, 15b End part (the upper end part and lower end part of a straight pipe part)
15c Outer peripheral surface (outer peripheral surface of straight pipe part)
16 cylinder part 16b outer peripheral surface (outer peripheral surface of a cylinder part)
18 1st cover member 18a, 19a End part (one end part of a 1st and 2nd cover member)
19 Second cover member 20 Third cover member 20a End (one end of the third cover member)
21 end face (end face of one end of each of the first and second cover members)
22 Cutting surface 24 Tapered portion 24a Tip (tip of tapered portion)
25 Joint surface (joint surface of tapered part)
26 Convex 27 Convex

Claims (2)

  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. Then, the tip of each of the tapered portions is brought close to the outer peripheral surface of the cylindrical portion when the third cover member is fitted to the cylindrical portion on the outer peripheral surface of the cylindrical portion. A pipe joint having a convex portion for expanding the end of the third cover member is formed.   On the outer peripheral surface of the straight pipe portion, a pair defined by the end face and the cut surface of each cover member in a fitted state of the first and second cover members to the straight pipe portion. A convex portion is formed for expanding the end portions of the first and second cover members so as to separate the corner portions from the outer peripheral surface of the straight pipe portion. Item 1. The pipe joint according to Item 1.

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