JP5654943B2 - Branch joint and construction method of the branch joint - Google Patents

Description

  The present invention relates to a branch joint in which a branch pipe can be easily created using a branch joint used for a branch pipe, and a method for constructing the branch joint.

  In general, a branch joint is known in which a branch pipe portion branched in a branch shape from a main pipe portion is integrally formed in advance with a saddle member attached and fixed to a side surface of the main pipe portion.

  In this branch joint, a through hole is formed in the side surface of the main pipe portion, and the saddle member is attached to the side surface and fixed integrally with the through hole.

  For example, as a branch joint and a construction method of the branch joint, those shown in FIGS. 10 to 13 are known (see, for example, Patent Document 1 or 2).

  In such a case, the template 2 is used to form an opening 1b for the branch pipe on the side surface 1a of the main pipe portion 1 having a tubular shape.

  As shown in FIG. 10, the template 2 has a semi-cylindrical shape with substantially the same curvature as that of the side surface 1a of the main pipe part 1, and the side surface 1a around the guide groove parts 4 and 4 of the branch pipe opening 1b. Between them, rubber non-slip plate members 3a and 3b are attached.

  Then, as shown in FIG. 11, the groove processing machine 5 is used, and the periphery of the branch pipe opening 1 b along the guide groove portions 4 and 4 is cut.

  Further, in the scribing jig 6 as a template as shown in FIG. 12, magic ink or the like is used along the inner peripheral edge 6a of the opening of the template 6, and the cutting line is used on the side surface 1a. In addition, as a cut piece 7, a part of the side surface 1 a is cut out to form an opening 1 b for the branch pipe.

  Further, a saddle member 8 mounted on the peripheral edge of the branch pipe opening 1b as shown in FIG. 13 is also known.

  The saddle member 8 has the same curvature as that of the side surface 1a of the main pipe portion 1 and has a substantially semi-cylindrical shape. The saddle portion 8a is attached to the saddle member 8 and branches from the saddle portion 8a. 8b is integrally formed in advance.

  Then, the saddle member 8 prepared as a separate member from the template 2 or the scribing jig 6 is aligned with the opening 1b for the branch pipe formed in the opening, and between the peripheral edge 1c and the joint surface 8c. It is fixed to the side surface 1a of the main pipe part 1 by the applied bonding agent.

Japanese Patent No. 2530941 JP 2002-36019 A

  However, in the conventional branch joint and the construction method of the branch joint, the template 2 or the scribing jig 6 is used to position and open the branch pipe opening 1b.

  For this reason, a working jig such as the template 2 or the scribing jig 6 is required separately, and there is a problem that the parts management becomes complicated due to an increase in the number of parts.

  Further, the saddle member 8 is fixed so as to cover the branch pipe opening 1b formed in the side surface 1a of the main pipe part 1.

  For this reason, it is difficult to align the saddle member 8, and it is impossible to confirm whether or not the bonding agent applied between the peripheral edge 1c and the bonding surface 8c has spread over the entire circumference of the branch pipe opening. There was also.

  Accordingly, the present invention provides a branch joint capable of reducing the number of jigs such as a template and improving the workability of fixing the saddle member so as to be integrated with the main pipe portion, and a method for constructing the branch joint. The issue is to provide.

  In order to solve the above-described problem, the invention described in claim 1 is provided with a saddle member that is provided with a branch pipe opening formed in a side surface of a circular main pipe part and is attached to the branch pipe opening. The saddle member includes a branch joint in which a branch pipe portion branched in a branch shape from a saddle portion attached to the periphery of the opening for the branch pipe is integrated, and the main pipe is connected to the saddle portion. It features a branch joint provided with a guide part for guiding the cutting position of the branch pipe opening in a state of being attached to the side surface of the part.

  In addition, what is described in claim 2 is characterized by the branch joint according to claim 1, wherein the guide portion is a guide hole located in pairs on both sides of the opening for the branch pipe.

  Further, a third aspect of the present invention is characterized in that the guide portion is a curved protrusion that forms an end edge portion of the branch pipe opening.

  According to a fourth aspect of the present invention, a saddle member is attached to the side surface of the main pipe portion, and after drawing a guide line indicating a cutting position, the saddle member is once removed and the guide line is attached. 4. The branch joint according to claim 1, wherein a peripheral edge of the branch pipe opening is cut to form an opening, and the saddle member is fixed to the branch pipe opening again. It features a construction method.

  According to the first aspect of the present invention, in the state where the guide portion provided in the saddle portion is attached to the side surface of the main pipe portion, the opening for the branch pipe is at a position where the opening is cut. Along the guide.

  For this reason, the guide line etc. which were drawn by this guide can be used as a cutting line which is actually cut.

  The opening for the branch pipe that has been cut and opened has its peripheral position uniquely determined with reference to the guide.

  Therefore, when the saddle member is fixed to the main pipe portion, if the guide portion is aligned with the guide start position, the saddle portion can be easily positioned and fixed facing the branch pipe opening. .

  Therefore, the opening for the branch pipe can be formed in accordance with the branch pipe portion of the saddle member without using another jig such as a template, and the number of parts can be reduced.

  Further, when the saddle member is fixed to the main portion, accurate alignment can be easily performed, and workability for fixing the saddle member to the main portion can be improved.

  Further, according to the second aspect of the present invention, the guide holes of the guide portion are located in pairs on both sides of the branch pipe opening.

  For this reason, the guide line which crosses the opening part for branch pipes can be drawn so that the guide start positions marked by the guide hole may be connected. Furthermore, by arranging the guide lines orthogonally, the intersection position of the guide lines can be uniquely determined.

  Therefore, positioning of the center point etc. of the circular arc part which comprises the both ends of the opening part for branch pipes can also be performed by this intersection, and construction workability | operativity is also favorable.

  Further, according to the third aspect of the present invention, the curved line of the opening for the branch pipe can be easily formed by drawing a guide line on the side surface of the main pipe part using the curved protrusion part of the guide part. The edge portion can be formed, and the workability is good.

  According to a fourth aspect of the present invention, a saddle member is attached to the side surface of the main pipe portion, and after drawing a guide line indicating a cutting position, the saddle member is once removed and the guide line is attached. Along the periphery of the opening for the branch pipe is cut.

  When the saddle member is covered again, the opening for the branch pipe formed in the opening can be easily positioned by aligning the guide portion with the guide line, and according to the branch pipe opening, The saddle part can be fixed so as to be integrated.

It is a disassembled perspective view explaining the mode of the whole assembly with the construction of a branch joint and an embodiment of the branch joint of an embodiment of the present invention. (A) is a top view of a saddle member, (b) is a top view in combination with a main pipe portion, and (c) is a guide line written in the branch joint and the construction method of the branch joint according to the embodiment. (D) is a top view in which a round hole is formed with a hole saw or the like on the side surface of the main pipe, (e) is a top view in which a long hole is formed, and (f) is It is a top view which shows a mode that the saddle member was mounted | worn with the main pipe part. It is a perspective view of a saddle member by the branch joint of Example 1 of an embodiment. In the branch joint of Example 1 of the embodiment and the method of constructing the branch joint, (a) is a top view of the saddle member, (b) is a top view combined with the main pipe portion, and (c) is a guide. (D) is a top view showing a state in which the saddle member is drawn by sliding to draw an arc portion, and (e) is a slide movement of the saddle member to the opposite side. The top view which shows a mode that a circular arc part is drawn, (f) is a top view which formed the long hole opening. It is a perspective view of a saddle member by the branch joint of Example 2 of an embodiment. It is a perspective view of a saddle member by the branch joint of Example 3 of an embodiment. It is a perspective view of a saddle member by the branch joint of Example 4 of an embodiment. It is a top view of a saddle member in a branch joint of Example 5 of an embodiment. It is a top view of a saddle member in a branch joint of Example 6 of an embodiment. It is a disassembled perspective view explaining the structure of a scribing jig with the branch joint of a prior art example, and the construction method of this branch joint. It is a typical perspective view explaining a mode that the opening process for branch pipes is cut using a slot machine with the branch joint of a conventional example, and the construction method of this branch joint. It is a typical perspective view explaining a mode that the opening part for branch pipes is cut using a template with the branch joint of a prior art example, and the construction method of this branch joint. It is a typical perspective view explaining a mode that a saddle member is fixed to an opening part for a branch pipe by a branch joint of a conventional example and a construction method of the branch joint.

  FIG. 1 thru | or FIG. 9 shows the construction method of the branch joint of this Embodiment, and this branch joint.

  First, from the configuration, in the branch joint of this embodiment, the branch pipe opening 1b is formed in the side surface 1a of the tubular main pipe portion 1.

  A saddle member 11 is attached to the branch pipe opening 1b. The saddle member 11 mainly includes a saddle portion 12 having a substantially arcuate cross section attached to the peripheral edge portion 1c of the branch pipe opening 1b, and an axial direction obliquely extending from the saddle portion 12 in a branch shape. A branch pipe portion 13 that branches off is formed integrally in advance.

  Of these, the saddle portion 12 has the same curvature as that of the side surface 1a of the main pipe portion 1 and has a substantially semi-cylindrical shape, and an adhesive is used on the side surface 1a as shown by a two-dot chain line in FIG. As in the fixed state, a plurality of guide holes 14 are formed as guide portions for guiding the cutting position of the branch pipe opening 1b while being detachably attached.

  In this embodiment, a pair along the tube axis direction L is formed at the front and rear side ends where the opening 1b for the branch pipe is formed, and a pair is formed in the circumferential direction R on the left and right sides of the branch pipe opening 1b. Two pairs of guide holes 14, 14... Are formed in a round hole shape with an interval of a constant dimension L1.

  Furthermore, in this embodiment, the saddle portion 12 is provided with black line-shaped tube top line markers 15 and 15 for positioning in the circumferential direction R in accordance with a mark line or the like of the tube top portion. It is provided so that it may become a pair at both ends.

  In the construction method of the saddle member 11 of this embodiment configured as described above, the saddle member 11 as shown in FIG. 2 (a) is replaced with the side surface of the main pipe portion 1 as shown in FIG. 2 (b). Attached to 1a, the top of the tube is aligned by the tube top line markers 15 and 15, and marks 16 are drawn on the side surface 1a using the magic ink 17 from the guide holes 14 and 14, respectively.

  Next, as shown in FIG. 2 (c), the marks 16 and 16 drawn so as to be paired with the side face 1a are connected by the guide lines 18 drawn in a straight line.

  Among these, the guide lines 18 and 18 in the tube axis direction L and the guide lines 18 and 18 drawn in the circumferential direction R are orthogonal to each other, and intersection points 19 and 19 are formed on the side surface 1a.

  Then, as shown in FIG. 2 (d), round holes 20 and 20 are formed with a cutting tool such as a hole saw around the intersections 19 and 19 indicated by the two-dot chain line.

  Further, the outer edges 20a, 20a and 20a, 20a located at the intersections with the guide wires 18, 18 are connected by the cutting lines 9, 9 on the outer circumferences of the round holes 20, 20. be painted.

  Further, as shown in FIG. 2 (e), along the cutting lines 9, 9, the outer edge 20a, 20a is cut with a cutting tool such as a sander or a jigsaw, and is cut in the tube axis direction. A long hole 10 along the longitudinal direction of L is formed.

  And as shown in FIG.2 (f), while applying a bonding agent to the side surface 1a of the said main pipe part 1, the said saddle member 11 is mounted and crimped | bonded.

  At this time, the tube top line markers 15 and 15 align the tube tops, and the guide holes 14 and 14 are aligned with the marks 16... Of the side surface 1 a drawn with the magic ink 17. The long hole 10 faces the portion 13 and alignment is performed.

  Further, it is visually confirmed whether or not the bonding agent spreads reliably between the peripheral edge portion 1c and the bonding surface on the back surface side of the saddle portion 12 by the applied bonding agent protruding from each guide hole 14. I can do it.

  3 and 4 show a branch joint of Example 1 of the embodiment of the present invention and a method for constructing the branch joint.

  Note that portions that are the same as or equivalent to those in the above-described embodiment are described with the same reference numerals.

  First, the difference in configuration will be mainly described. In the first embodiment, the saddle portion 22 constituting the saddle member 21 is provided with guides located on both the left and right sides of the branch pipe portion 13 as shown in FIG. Two sets of holes 14 and 14 are formed with a predetermined interval L2.

  In addition, two sets of guide holes 24 and 24 as a part of the guide portion are provided at a predetermined interval W1 at both front and rear positions of the branch pipe portion 13 provided along the tube axis direction L. A round hole is formed in the vicinity of the front and rear side edges 22a and 22b.

  Then, the front and rear side edge portions 22a and 22b of the saddle portion 22 are curved projections used as semicircular arc-shaped guides located at the front and rear ends when the end edge portion of the branch pipe opening 1b is formed. The parts 23 and 23 are integrally formed.

  Next, a construction method of the branch pipe joint using the saddle member 21 of the first embodiment will be described with reference to FIG.

  First, the saddle member 21 as shown in FIG. 4 (a) is attached to the side surface 1a of the main pipe portion 1 as shown in FIG. In the same manner as in the above embodiment, magic ink 17 is used from the guide holes 14 and 14 and the guide holes 24 and 24, and marks 16 are drawn on the side surface 1a.

  Next, as shown in FIG. 4C, the marks 16 and 16 drawn so as to be paired with the side surface 1a are connected by guide lines 18 and 18 and 28 and 28 drawn in a straight line. Is done.

  The guide lines 18 and 18 in the tube axis direction L and the guide lines 28 and 28 drawn in the circumferential direction R are orthogonal to each other, and four intersections 29 and 29 are formed on the side surface 1a.

  Then, as shown in FIG. 4 (d), the saddle member 21 is shifted in the direction indicated by the white arrow in the figure, and the rear edge 22b is aligned with the rear guide line 28. A semicircular arc guide line 25 is drawn along the protrusion 23.

  Further, the saddle member 21 is shifted in the direction opposite to the direction indicated by the white arrow in FIG. 4D, and the front edge 22a is aligned with the rear guide line 28, and the front protrusion A semicircular guide line 25 is drawn along the portion 23.

  For this reason, as shown by a two-dot chain line in FIG. 4 (e), guide lines 18 and 18 are respectively drawn continuously in the front and rear regions Y1 and Y2 to cut both ends of the long hole 30. Lines 25, 25 are drawn.

  Then, as shown in FIG. 4 (f), a cutting tool such as a sander or a jigsaw is used with the linear guide lines 18 and 18 and the arc-shaped and substantially semicircular guide lines 25 and 25 as cutting lines. A long hole 30 is formed as an opening 1b for a branch pipe that is used, cut, and extends in the longitudinal direction in the pipe axis direction L.

  On the side surface of the main pipe portion 1 formed in this manner, a bonding agent is applied and the saddle member 11 is placed and fixed together by being crimped in the same manner as in the above embodiment.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment, and thus description thereof is omitted.

  FIG. 5 shows a branch joint of Example 2 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the branch joint of the said embodiment and Example 1, and the construction method of this branch joint.

  First, the difference in configuration of the branch joint according to the second embodiment will be mainly described. In the branch joint according to the second embodiment, the saddle member 31 includes a saddle portion 32 mainly having an arcuate cross section, and the saddle portion 32. It is mainly comprised by the branch pipe part 13 provided integrally.

  Among them, the saddle portion 32 is formed with a plurality of guide holes 14 as guide portions for guiding the cutting position where the branch pipe opening 1b is formed.

  In this embodiment, a pair along the pipe axis direction L is provided at both front and rear ends of the branch pipe opening 1b, and a pair is provided in the circumferential direction R on the left and right sides of the branch pipe opening 1b. Two pairs of guide holes 14, 14... Are formed in a round hole shape with an interval of the dimension L1.

  Further, on the front and rear side edges 32a and 32b of the saddle portion 32, when forming end edges of the branch pipe opening 1b, projections 33 used as semicircular arc shaped guides located at both front and rear ends, 33 is integrally formed.

  The protrusions 33 and 33 have a pair of guide holes 34 and 34 in the shape of a round hole in the vicinity of the front and rear peripheral edges at the front and rear side positions of the branch pipe portion 13 provided along the tube axis direction L. An opening is formed.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment, and thus description thereof is omitted.

  FIG. 6 shows a branch joint of Example 3 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the branch joint of the said embodiment and Examples 1 and 2, and the construction method of this branch joint.

  First, the differences in the configuration of the branch joint of the third embodiment will be mainly described. In the branch joint of the third embodiment, the guide holes 14 of the saddle member 31 of the second embodiment have a total of four pairs of front and rear. Openings are formed so as to form a set.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment and Examples 1 and 2. Therefore, the description thereof is omitted.

  FIG. 7 shows a branch joint of Example 4 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the construction method of the branch joint of the said embodiment and Examples 1-3, and this branch joint.

  First, the difference in configuration of the branch joint of the fourth embodiment will be mainly described. In the branch joint of the second embodiment, the left and right side edges 52a and 52a of the saddle portion 52 are provided in two pairs, left and right. A total of four scribing protrusions 53, 53 and 53, 53 are provided in a tongue-like shape so as to be integrated with each other.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment and Examples 1 to 3, and thus description thereof is omitted.

  FIG. 8 shows a branch joint of Example 5 according to the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the branch joint of the said embodiment and Examples 1-4, and the same or equivalent part as the construction method of this branch joint.

  The left and right side edges 62a, 62a of the saddle portion 62 constituting the saddle member 61 of the fifth embodiment have a total of eight left and right pairs of scribing protrusions 53, 53, respectively. It protrudes in the shape of a tongue so as to be integrated.

  Further, semicircular arc-shaped protrusions 62b, 62b located at both front and rear ends are integrally formed, and a pair of front and rear scribing protrusions 63, 63... .

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment and Examples 1 to 4, and thus description thereof is omitted.

  FIG. 9 shows a branch joint of Example 6 according to the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the branch joint of the said embodiment and Examples 1-5, and the same or equivalent part as the construction method of this branch joint.

  In the sixth embodiment, the left and right side edges 72a and 72a of the saddle portion 72 of the saddle member 71 have the left and right four pairs of concave groove portions 73, 73. Is formed.

  Other configurations and functions and effects are substantially the same as those of the above-described embodiment and Examples 1 to 5, and thus description thereof is omitted.

  As described above, the position where the guide portion such as the guide hole 14 provided in the saddle portion 12 is attached to the side surface 1a of the main pipe portion 1 and the branch pipe opening portion 1b is cut open. A scribble line is drawn along the line.

  For this reason, since the marking line drawn by the guide uses the saddle member 11 to be fixed later as it is, it can be accurately processed by using it as a cutting line for actual cutting.

  The peripheral edge position of the opening 1b for the branch pipe that is opened by cutting is uniquely determined with reference to the guide holes 14, 14... Of the saddle member 11.

  Therefore, when the saddle member 11 is fixed to the main pipe portion 1, the saddle portion 12 can be easily opposed to the branch pipe opening 1b if the position of the guide hole 14 is set to the marking start position where the guide is started. Can be positioned and fixed.

  Therefore, the slot 10 or the like used as the branch pipe opening 1b can be formed in accordance with the branch pipe part 13 of the saddle member 11 without using other jigs such as the template 2 and the number of parts can be reduced. I can do it.

  Further, when the saddle member 11 is fixed to the side surface 1 a of the main pipe portion 1, accurate positioning can be easily performed, and workability for fixing the saddle member 11 to the main pipe portion 1 can be improved.

  Furthermore, the guide holes 14 and 14 as the guide portions are located in pairs on both sides of the branch pipe opening 1b.

  For this reason, the guide line 18 etc. which cross the opening part for branch pipes can be drawn so that the guide start positions marked by the guide holes 14 and 14 may be connected. Furthermore, by arranging the guide lines 18 and 18 orthogonally, the position of the intersection 19 between the guide lines can be uniquely determined.

  Therefore, the center point of the circular arc part which comprises the both ends of the long hole 10 as the opening part 1b for branch pipes can be positioned accurately by this intersection 19, and construction workability | operativity is also favorable.

  In addition, by using the curved projections 23 and 23 as the guide portion, the guide line is accurately drawn on the curved side surface 1a of the main pipe portion 1, so that the curved shape of the opening portion 1b for the branch pipe can be easily obtained. The front and rear end edges can be formed, and the workability is good.

  Then, after attaching the saddle member 11 to the side surface of the main pipe portion 1 and drawing the guide wire 18 indicating the cutting position, the saddle member 11 is once removed and the branch pipe opening along the guide wire 18 is drawn. The periphery of the part 1b is cut.

  When the saddle member 11 is again covered, the branch pipe opening 1b formed with an opening can be easily adjusted by aligning the guide hole 14 with the position of the marked mark 16 at the beginning of drawing the guide line 18. The saddle member 11 can be positioned.

  Therefore, the saddle portion 12 can be fixed so as to be integrated with the branch pipe opening 1b, and can be used as a branch joint with good dimensional accuracy after integration.

  As described above, the branch joint according to the embodiment of the present invention and the method for constructing the branch joint have been described in detail with reference to the drawings. The specific configuration is the construction of the branch joint according to the embodiment and the construction of the branch joint. Not only the method but also design changes that do not depart from the gist of the present invention are included in the present invention.

  For example, in the above-described embodiment, a total of three pairs of guide holes 14, 14... Are formed in a round hole shape at the front, rear, left, and right of the branch pipe portion 13 of the saddle portion 12. For example, the branch pipe portion 13 of the branch joint is previously set such that any one or one set is the scribing protrusion 53 of the fourth embodiment or the groove 73 of the sixth embodiment. The shape, quantity, material, and the like of the guide portion are not particularly limited as long as the guide portion is provided on the saddle portion 12 provided integrally.

DESCRIPTION OF SYMBOLS 1 Main pipe part 1a Side face 1b Branch pipe opening part 1c Peripheral part 10 Long hole 11,21,31,41,51,61,71 Saddle member 12,22,32,42,52,62,72 Saddle part 13 Branch pipe Part 14, 24, 34 Guide hole (guide part)
16 (guide start position)
18, 25, 28 Guide line 19, 29 Intersection 20 Round hole 20a Outer edge 22a, 22b Front / rear edge 23, 33, 62b Projection (guide)
53, 63 Scratch piece (guide part)
73 Groove (guide part)

Claims (4)

A branch pipe opening is formed on the side surface of the circular main pipe, and a saddle member is mounted on the branch pipe opening. The saddle member is attached to the periphery of the branch pipe opening. A branch joint in which a branch pipe portion branched in a branch shape from a saddle portion is integrated in advance,
A branch joint, wherein the saddle portion is provided with a guide portion that guides a cutting position of the opening portion for the branch pipe while being attached to a side surface of the main pipe portion.   The branch joint according to claim 1, wherein the guide portion is a guide hole located in a pair on both sides of the branch pipe opening.   3. The branch joint according to claim 1, wherein the guide portion is a curved protrusion that forms an end edge of the branch pipe opening. 4.   After attaching a saddle member to the side surface of the main pipe part and drawing a guide line indicating the cutting position, once remove the saddle member and cut the periphery of the branch pipe opening along the guide line, The method for constructing a branch joint according to any one of claims 1 to 3, wherein an opening is formed and the saddle member is fixed to the branch pipe opening again.