JP4879724B2 - Tubular and bent pipe side-by-side holding structure - Google Patents

Description

  The present invention relates to a nozzle and a bent tube side-by-side holding structure for connecting and holding bent tubes arranged side by side.

  Conventionally, when cables such as power cables and communication cables are arranged in a common groove, for example, a plurality of pipes provided for each type of cable are arranged along the common groove, It is common to insert and hold a cable divided into each pipe.

  In order to arrange such a plurality of tubes in multiple stages in the up and down direction, it is performed that they are held together by a tube pillow (tube base) at intervals. As such a tube pillow, for example, as shown in FIG. 17A, a tube pillow having two tube holding members 1 and 2 coupled so as to be relatively movable in the extending direction of the tube holding portions 1a and 2a is known. (For example, see Patent Documents 1 and 2).

  By the way, as a pipe | tube mentioned above, in order to avoid an obstruction and to change direction, using a bending pipe | tube etc. is also considered.

  In such a case, if the tube holding member 2 can slide laterally with respect to the tube holding member 1 as indicated by the arrow B in FIG. When the two are coupled and held together, no excessive force in the lateral direction acts on the tube holding members 1 and 2 from the bent tube.

  However, since the tube holding member 2 could not slide in the lateral direction with respect to the tube holding member 1, when the bent tubes arranged side by side are held together, the bent tube is laterally moved from the bent tube to the tube holding members 1 and 2. Unreasonable force to act on sometimes.

In order to solve such a problem, as shown by an arrow B in FIG. 17B, a tube pillow or a piping pillow that allows the tube holding member 2 to slide laterally with respect to the tube holding member 1 Is also known (see, for example, Patent Documents 3 and 4).
No. 07-03622 Japanese Patent Laid-Open No. 10-227374 JP-A-10-169840 Japanese Patent Laid-Open No. 10-160049

  However, in this tube pillow or piping pillow stand, the tube holding member 2 cannot slide in the direction in which the tube holding portions 1a, 2a extend with respect to the tube holding member 1, so that the tube holding member 2 is used as the tube holding member 1. On the other hand, in places where it is necessary to assemble the tube holding parts 1a, 2a from the extending direction, the tube holding member 2 cannot be assembled to the tube holding member 1 from the extending direction of the tube holding parts 1a, 2a. Met.

  Therefore, the present invention can avoid an excessive force acting in the lateral direction on the pair of tube holding members that hold the bent tubes together, and the tube holding members are connected to the tube holding members. It is an object to provide a nozzle and a bent tube side-by-side holding structure that can be assembled from the extending direction of the tube.

In order to achieve this object, the first aspect of the present invention provides a first left and right side wall, a first wall connecting the first left and right side walls, and a first wall provided between the first left and right side walls. Provided between a first tube holding member having one tube holding portion, a second left and right side wall, a second wall connecting the second left and right side walls, and the second left and right side walls. A second tube holding member having a second tube holding portion, and first and second planes provided on the first and second walls and aligned with each other, and the first and first planes , respectively. the second cross from ants groove perpendicular to the provided and the center line is parallel to the direction extending first dovetail groove and the first dovetail groove of the tube member to be held in the tube holding portion in one of the two planes and engaging grooves formed in Jo, the first, slidably engages the second and the engagement groove provided on the other plane The dovetail groove is a first engagement groove provided on the first plane and a second engagement groove provided on the second plane. The protrusion is provided on the first plane and engaged with the second engagement groove, and the protrusion is provided on the second plane and engaged with the first engagement groove. And the first dovetail groove portion of the first engagement groove and the first dovetail groove portion of the second engagement groove are both ends in the direction in which the center line of the tube holding portion extends. And the second dovetail groove portion of the first engagement groove and the second dovetail groove portion of the second engagement groove are respectively opened on the side walls located on opposite sides. To do.

In order to achieve the above-described object, the invention according to claim 2 is provided with a plurality of nozzles according to claim 1 at intervals in the extending direction of the first and second bent pipes arranged side by side. At the same time, the first and second bent pipes are held by the first and second pipe holding portions of the nozzle so that the first and second bent pipes are coupled and held together. a the bent pipe juxtaposed holding structure, the first of said pipe base, the second tube holding member and the first, second ant the direction of extension of the second curved tube direction perpendicular thereto A bent tube side-by-side holding structure is provided so as to be relatively movable by the groove and the protrusion .

  According to such a nozzle pedestal and bent tube side-by-side holding structure, it is possible to avoid an excessive force acting in the lateral direction on the pair of tube holding members that hold the bent tubes together. Moreover, the tube holding members can be assembled to the tube holding member from the direction in which the tube holding portion extends.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Constitution]
FIG. 1 (a) shows first and second bent pipes 10 arranged side by side as shown in FIG. 1 (b) on a pipe shelf (not shown) of a common groove (not shown). 11 is a plan view. The first and second bent pipes 10 and 11 are bent in the horizontal direction as shown in FIG. 1A in accordance with the horizontal bend of a pipe shelf (not shown). A cable C such as a communication cable or an electric wire is disposed in the first and second bent pipes 10 and 11.

  The first bent pipe 10 is obtained by connecting two bent pipes 10b and 10c in series between straight pipes 10a and 10d. The two bent pipes 10b and 10c are curved in the horizontal direction and in opposite directions.

  Further, the second bent tube 11 is configured in substantially the same manner as the first bent tube 10, and has straight tubes 11a and 11d and two bent tubes 11b and 11c as shown in FIG. 2 (b). For the convenience of illustration, the detailed configuration of the second bent tube 11 is omitted in FIG.

  Next, in FIG. 1 (a), the case where the bending (curvature radius) of the curved pipes 10b, 10c, 11b, and 11c in the horizontal direction is 5 mR (R is an abbreviation of the radius) will be described. In this case, each connection part of the pipes 10a to 10d of the first bent pipe 10 and each connection part of the pipes 11a to 11d of the second bent pipe 11 are formed between the upper and lower first and second bent pipes 10 and 11. In order to narrow the interval, it was necessary to shift by about 300 mm as shown in FIG.

  Further, in FIG. 1 (a), the bent portion B of the bent pipe 10b in FIG. 1 (b) has a horizontal displacement between the bent pipes 10b and 11b in FIG. 1 (b) and the bent portion B of the bent pipe 10c in FIG. ) Of the bent pipes 10c and 11c in the horizontal direction is approximately 25 mm as shown in FIG.

  When the bending (curvature radius) of the curved pipes 10b, 10c, 11b, and 11c is 5 mR (R is an abbreviation of radius), regardless of the number of bent pipes connected, that is, as shown in FIG. Even when two bent pipes 10b and 10c of the first bent pipe 10 are provided, and similarly two bent pipes 11b and 11c of the second bent pipe 11 are provided, the first bent pipe 10 is provided. As shown in FIG. 1 (d), the connection portion between the plurality of tubes constituting the second connection portion and the connection portion between the plurality of tubes constituting the second bent tube 11 are approximately 300 mm as shown in FIG. It is necessary to shift only. Also in this case, the amount of deviation in the horizontal direction of the axis of the upper and lower curved pipes at the bent portion B was approximately 25 mm as shown in FIG.

In addition, in FIG. 2A, when the bending (curvature radius) of the curved pipes 10b, 10c, 11b, and 11c is 10 mR (R is an abbreviation for radius), a plurality of the first bent pipes 10 are formed. As shown in FIG. 2B, it is necessary to shift the connection part between the pipes and the connection part between the plurality of pipes constituting the second bent pipe 11, that is, the connection parts adjacent in the vertical direction by about 300 mm. . In this case, the amount of deviation in the horizontal direction of the axis of the upper and lower bent pipes at the bent portion B was approximately 12 mm as shown in FIG.
<Tube head>
Such a nozzle 12 for supporting the first and second bent pipes 10 and 11 at a plurality of positions is provided with an upper pipe pillow (first pipe as shown in FIGS. 1 (e), 2 (c) and 3). Tube holding member) 13 and lower tube pillow (second tube holding member) 14.
(Hollow structure of the upper tube pillow 13)
As shown in FIG. 3, the upper tube pillow 13 includes an upper wall 13a (first wall of the first tube holding member) , a lower wall (bottom wall) 13b, and left and right side walls 13c, 13d (first left and right side walls) . It is formed hollow from the side wall . As is apparent from FIG. 3, the upper wall 13a is provided with left and right side walls 13c and 13d (first left and right side walls). In addition, as shown in FIG. 3, a plurality of the plurality of walls 13c and 13d arranged at an equal pitch and integrally formed with the upper wall 13a and the lower wall 13b are provided between the upper wall 13a and the lower wall 13b. As shown in FIG. 4, the first vertical ribs 13e and the second vertical ribs 13f orthogonal to the first vertical ribs 13e and integrally formed with the first vertical ribs 13e and the side walls 13c and 13d are provided. The second vertical rib 13f is formed integrally with the upper wall 13a and the lower wall 13b as shown in FIG.

As shown in FIG. 3, the upper wall 13a has a semicircular recess 13g positioned between the left and right side walls 13c and 13d as is apparent from the drawing. It is formed as. In addition, the first bent tube 10 is supported (held) on the concave portion 13g as shown in FIG. In FIG. 1 (e), O 1 indicates the center line of the first bent pipe 10.
(Hollow structure of lower pipe pillow 14)
Further, the lower tube pillow 14 includes a first lower tube pillow 15 and a second lower tube pillow 16 which are divided vertically as shown in FIGS. 1 (e), 2 (c), and 3.

As shown in FIG. 3, the first lower pipe pillow 15 includes an upper wall 15a (second wall of the second pipe holding member) , a lower wall (bottom wall) 15b, and left and right side walls 15c, 15d (second It is formed hollow from the left and right side walls . As is apparent from FIG. 3, the upper wall 15a is formed by connecting left and right side walls 15c and 15d (second left and right side walls). In addition, as shown in FIG. 3, there are a plurality of spaces formed between the side walls 15c and 15d at an equal pitch and formed integrally with the upper wall 15a and the lower wall 15b. As shown in FIG. 4, the first vertical ribs 15e and the second vertical ribs 15f orthogonal to the first vertical ribs 15e and provided integrally with the first vertical ribs 15e and the side walls 15c and 15d are provided. The second vertical rib 15f is formed integrally with the upper wall 15a and the lower wall 15b as shown in FIG. The lower wall 15b is formed with a semicircular recess 15g as shown in FIG.

  Further, as shown in FIG. 3, the second lower tube pillow 16 is formed hollow from an upper wall 16a, a lower wall (bottom wall) 16b, and left and right side walls 16c, 16d. In addition, as shown in FIG. 3, there are a plurality of spaces formed between the side walls 16c and 16d at an equal pitch between the upper wall 16a and the lower wall 16b and formed integrally with the upper wall 16a and the lower wall 16b. As shown in FIG. 4, the first vertical rib 16e and the second vertical rib 16f orthogonal to the plurality of first vertical ribs 16e and provided integrally with the first vertical rib 16e and the side walls 16c and 16d are provided. The second vertical rib 16f is formed integrally with the upper wall 16a and the lower wall 16b as shown in FIG. The upper wall 16a has a semicircular recess 16g as shown in FIG.

Further, as shown in FIG. 3, the lower wall 15b of the first lower pipe pillow 15 is disposed on the upper wall 16a of the second lower pipe pillow 16, and the lower wall 15b and the upper wall 16a are opposed to each other. ing. Moreover, the tube holding hole 17 is located between the left and right side walls 15c and 15d between the concave portion 15g of the lower wall portion 15a and the concave portion 16g of the upper wall 16a, as is apparent from FIG. Tube support part). In the tube holding hole 17, the second bent tube 11 is fitted and held as shown in FIGS. 1 (e) and 2 (c). In FIG. 1 (e) and FIG. 2 (c), O 2 indicates the center line of the second bent pipe 11.

  Further, as shown in FIG. 3, a locking projection 18 and a locking hole 19 are formed on the lower wall 15 b of the first lower tube pillow 15 so as to be positioned outside the left and right sides of the tube holding hole 17. . In addition, a locking hole 20 and a locking projection 21 are formed on the upper wall 16 a of the second lower tube pillow 16 so as to be positioned outside the left and right sides of the tube holding hole 17.

The locking projection 18 of the first lower tube pillow 15 is detachably fitted and fixed to the locking hole 20 of the second lower tube pillow 16, and the locking projection 21 of the second lower tube pillow 16 is fixed to the first lower tube. It is detachably fitted and fixed to the locking hole 19 of the pillow 15. Thereby, the 1st lower pipe pillow 15 and the 2nd lower pipe pillow 16 are being fixed so that attachment or detachment is possible.
(Engagement structure of the upper tube pillow 13 to the lower tube pillow 14)
As shown in FIG. 3, the lower wall 13b of the upper tube pillow 13 and the upper wall 15a of the first lower tube pillow 15 are opposed to each other, and the lower wall 13b and the upper wall 15a are opposed to each other . 1 plane) 13b1 and an upper surface ( second plane) 15a1. As shown in FIGS. 3 and 6, the upper surface 15a1 is formed to have a wider width in the left-right direction than the lower surface 13b1.

In the left part of the lower wall 13b of the upper tube pillow 13, as shown in FIG. 6, there is a recess (reinforcing groove) 22 extending in the longitudinal direction of the first bent tube 10, that is, in the direction in which the center line O1 extends. Is formed. The recess 22 is formed by bulging the lower wall 13b downward. Moreover, an engagement protrusion 23 is provided as a first protrusion on the left portion of the lower wall 13b of the upper tube pillow 13.

  As shown in FIG. 7 (a), the engaging projections 23 extend to the left and right, and a base portion is integrally provided on the side surfaces 22a and 22a of the concave portion 22 and the upper surface 22b of the concave portion 22, and the standing portion 23a. And a flange 23b projecting in the vertical direction at the front end. As shown in FIG. 7B, the engaging protrusion 23 is formed in a T-shaped cross section from the standing portion 23a and the flange 23b. The upright portion 23a is reinforced so that the base end is not damaged by an external force in a direction perpendicular to the plate surface by providing the base portion integrally with the side surfaces 22a, 22a of the concave portion 22 and the upper surface 22b of the concave portion 22. ing.

  Further, as shown in FIG. 7, the flange 23b has an H-shaped planar shape from the flange 23b1 extending in the width direction of the recess 22 and the flanges 23b2 and 23b2 extending in the longitudinal direction of the recess 22 from both sides of the flange 23b1. It is formed in a shape. As a result, play does not cause play when engaged with a T-shaped dovetail or the like.

Further, as shown in FIG. 6, a first engagement groove (dovetail groove) 24 having a T-shaped cross section that opens to the lower surface 13b1 is provided in the right portion of the lower wall 13b of the upper tube pillow 13. Yes. This engagement groove 24 is the longitudinal direction of the first bent tube 10 , that is, the direction in which the center line O1 of the first bent tube 10 extends (the direction in which the center line of the semicircular recess 13g that is a tube holding portion extends). first engagement groove extending in the (first dovetail portion) 24a, the second engaging groove portion (second dovetail portion) 24b extending in a direction perpendicular to the center line O1 in a cross shape Is formed. The first engaging groove portion 24a is open at both ends of the lower wall 13b in the direction of extension of the center line O1, the second engaging groove 24b at the right end is open to the side.
(Engagement structure of lower pipe pillow 14 to upper pipe pillow 13)
Further, as shown in FIG. 6, the upper wall 15 a of the first lower tube pillow 15 has substantially the same structure as the recess 22 ′ that is substantially the same as the recess 22 and the engagement protrusion (first protrusion) 23. A mating protrusion (second protrusion) 23 'and a cross-shaped engagement groove (second engagement groove) 24' having substantially the same structure as the cross-shaped engagement groove 24 (first engagement groove) are provided. Have.
In this construction, except that 'the second engaging groove portion 24b constituting the' is open on the left side engaging groove 24, the engaging groove 24 'is the same as the engaging groove 24. Therefore, the engagement protrusion 23 and the engagement groove 24 are formed in the same or similar part as the engagement protrusion 23 of the engagement protrusion 23 ′ and the same or similar part as the engagement groove 24 of the engagement groove 24 ′. The same reference numerals as those assigned to are attached, and description of the structure is omitted.

  As described above, for example, when the bending (curvature radius) of the curved pipes 10b, 10c, 11b, and 11c is 5 mR (R is an abbreviation of radius), regardless of the number of connected curved pipes, that is, FIG. Even when the two bent pipes 10b and 10c of the first bent pipe 10 are provided as shown in (c) and two bent pipes 11b and 11c of the second bent pipe 11 are provided, respectively, FIG. 1 (d) shows a connecting portion between a plurality of tubes constituting one bent tube 10 and a connecting portion between a plurality of tubes constituting a second bent tube 11, that is, connecting portions adjacent vertically. As shown, it must be shifted by approximately 300 mm. Also in this case, the amount of deviation in the horizontal direction (direction orthogonal to the axis O1,02) of the upper and lower curved pipes in the bent portion B, that is, the lateral direction is approximately 25 mm as shown in FIG.

  The bent portion B of the first bent tube 10 and the second bent tube 11 having a lateral displacement of about 25 mm is held (supported) on a support frame of a common groove (not shown) by the nozzle 12. In this case, first, the second lower tube pillow 16 of the lower tube pillow 14 is disposed on a support frame (not shown), and the bent portion B of the second bent tube 11 is formed in the semicircular shape of the second lower tube pillow 16. Place on the recess 16g.

  Thereafter, the first tube pillow 15 is disposed on the second lower tube pillow 16, and the concave portion 15g of the first tube pillow 15 is engaged with the bent portion B of the second bent tube 11, and the first The locking projection 18 of the lower pipe pillow 15 is detachably fitted and fixed to the locking hole 20 of the second lower pipe pillow 16, and the locking projection 21 of the second lower pipe pillow 16 is engaged with the first lower pipe pillow 15. The fixing hole 19 is detachably fitted and fixed. As a result, the first lower tube pillow 15 and the second lower tube pillow 16 are detachably fixed to each other, and the tube holding hole 17 is formed between the first lower tube pillow 15 and the second lower tube pillow 16. The bent portion B of the second bent tube 11 is held (supported).

  In this state, when the bent portion B of the first bent tube 10 is supported on the second bent tube 11, the upper tube pillow 13 is assembled on the lower tube pillow 14 of the nozzle 12. In this case, as shown in FIG. 9, the end of the concave portion 22 of the upper tube pillow 13 is aligned with the end of the first engagement groove 24 ′ of the lower tube pillow 14 and the first engagement groove of the upper tube pillow 13. The end of 24 is aligned with the end of the recess 22 ′ of the lower tube pillow 14, and the upper tube pillow 13 is moved so as to overlap the lower tube pillow 14 in the direction in which the axes O 1 and O 2 extend.

Accordingly, the engaging projection 23 of the upper tube pillow 13 is engagable away the first and vertically movable in the axial direction O1, O2 direction with the engaging groove portion 24a 'of the lower tube pillow 14 together, engaged to be separated in the first second and vertically movable in the axial direction O1, O2 direction with the engaging groove portion 24a of the engagement projection 23 'is above tube pillow 13 of the lower tube pillow 14 Match.

When the upper tube pillow 13 and the lower tube pillow 14 overlap in the directions of the axes O1 and O2 as shown in FIGS. 10A and 10B, the engagement protrusions 23 of the upper tube pillow 13 in FIG. 'together corresponding to the position to engage the first engaging projection 23 of the lower tube pillow 14 in FIG. 6' second engaging groove portion 24b of the lower tube pillow 14 second upper tube pillow 13 corresponding to the position to engage the engaging groove portion 24b.

  In this state, when the bent portion B of the first bent tube 10 is placed in the concave portion 13g of the upper tube pillow 13, the first bent tube 10 and the second bent tube 11 are in the bent portion B portion. As shown in FIG. 1E, the upper tube pillow 13 is moved 25 mm horizontally with respect to the lower tube pillow 14 as shown in FIG. The displacement of the second bent pipes 10 and 11 is absorbed.

As a result, even if the upper and lower first and second bent tubes 10 and 11 are held by the nozzle 12 in the bent portion B of the first and second bent tubes 10 and 11, the first bent tube is used. 10 and the upper tube pillow 13, the second bent tube 11 and the lower tube pillow 14, and the upper tube pillow 13 and the lower tube pillow 14 are subjected to an excessive force in the lateral direction. It can be prevented beforehand.
(Modification 1)
Further, the nozzle 12 described above is used to hold the first and second bent pipes 10 and 11 which are vertically downward and curved from the upper left to the lower right as shown in FIGS. 11 (a) and 12 (a). It can also be used, and as shown in FIGS. 11 (b) and 12 (b), it can also be used to hold the first and second bent tubes 10 and 11 that are vertically upward curved from the lower left to the upper right. .

  11 (a) and 11 (b), the curved pipes 10b, 10c and 11b, 11c have a radius of curvature of 5 m. In FIGS. 12 (a) and 12 (b), the curved pipes 10b, 10c and 11b and 11c have a radius of curvature of 10 m.

  11 (a) and 12 (a), the distance between the receiving ends between the connecting ends of the vertically downward bent pipes 10b and 11b is shifted by 200 mm, and FIGS. 11 (b) and 12 (b). The distance between the receiving ends between the connection ends of the vertically upward curved pipes 10b and 11b is shifted by 400 mm.

Further, when the bending (curvature radius) of the curved pipes 10b, 10c, 11b, and 11c is 10 mR (R is an abbreviation of radius), the horizontal direction (axis O1, The amount of deviation in the direction orthogonal to 02), that is, in the lateral direction is approximately 12 mm as shown in FIG. This deviation can be absorbed in the same manner.
(Example of use)
Moreover, the nozzle 12 mentioned above can also be used by moving the upper tube pillow 13 to the left end with respect to the lower tube pillow 14 as shown in FIGS. 13 (a) and 13 (b). Moreover, the nozzle 12 can also be used by moving the upper tube pillow 13 to the right end with respect to the lower tube pillow 14 as shown in FIGS.

  Further, as shown in FIGS. 15 (a) and 15 (b), the lower surface 13b1 of the upper tube pillow 13 is disposed on the side at substantially the same height as the upper surface 15a1 of the first lower tube pillow 15, As shown in FIGS. 16 (a) and 16 (b), the engagement projection 23 of the upper tube pillow 13 is engaged from the end of the second engagement groove 24 'of the first lower tube pillow 15. In addition, the upper tube pillow 13 can be disposed on the right side of the first lower tube pillow 15 and a part of the upper tube pillow 13 can be used so as to protrude from the right end of the first lower tube pillow 15.

  Further, as shown by a two-dot chain line in FIG. 14 (b), by holding the lower wall 13 b of the upper tube pillow 13 and the upper wall 15 a of the first lower tube pillow 15 with the clip 30, It is possible to prevent the lower first tube pillow 15 from shifting laterally.

As described above, the nozzle 12 according to the embodiment of the present invention includes the first and second planes (lower surface 13b1, lower surface 13b1, each having the tube holding portion (the recessed portion 13g and the tube holding hole 17). First and second tube holding members (upper tube pillow 13 and lower tube pillow 14) each having an upper surface 15a1) are provided. Also, dovetail grooves (engaging grooves 24, 24 ') are formed on one of the first and second planes (lower surface 13b1, upper surface 15a1), and the first and second planes (lower surface 13b1, upper surface 15a1). On the other side, protrusions (engaging protrusions 23, 23 ') are provided which are slidably engaged with the dovetail grooves (engaging grooves 24, 24'). Moreover, the dovetail grooves (engagement grooves 24, 24 ') are the centers of the tube members (first and second bent tubes 10, 11) held in the tube holding portion (recess 13g, tube holding hole 17). lines (O1, O2) a first dovetail groove parallel to the extending direction (first engagement groove part 24a, 24a '), and said first dovetail groove (first engaging groove portion 24a, 24a' ) and a second dovetail groove (second engaging groove portion 24b that is orthogonal, and is formed from 24b ') in a cross shape.

According to this configuration, it is possible to avoid an excessive force acting in the lateral direction on the pair of tube holding members that hold the bent tubes together. Moreover, the tube holding members can be assembled to the tube holding member from the direction in which the tube holding portion extends. Further, the bent tube side-by-side holding structure according to the embodiment of the present invention has the first and second side-by-side arrangements. A plurality of nozzles 12 are provided at intervals in the direction in which the bent pipes (10, 11) extend, and the nozzle 12 includes first and second pipe holding members (an upper pipe pillow 13, a lower pipe). A pillow 14) is provided. Moreover, the first and second tube holding members (upper tube pillow 13 and lower tube pillow 14) have first and second tube holding portions (recesses 13g and tube holding holes 17), respectively, and are aligned with each other. It has first and second planes (lower surface 13b1, upper surface 15a1), and dovetail grooves (engaging grooves 24, 24 ') are formed on one of the first and second planes (lower surface 13b1, upper surface 15a1). On the other side, projections (engaging projections 23, 23 ') are provided which are slidably engaged with the dovetail grooves (engaging grooves 24, 24'). In addition, the first and second bent pipes (10, 11) are held in the first and second pipe holding portions (recesses 13g, pipe holding holes 17), respectively, and thereby the first and second bent pipes (10, 11) are held. The bent pipes (10, 11) are coupled and held together. Moreover, the dovetail grooves (engaging grooves 24, 24 ') extend from the center lines (O1, O2) of the bent pipes (10, 11) held in the pipe holding portions (recesses 13g, pipe holding holes 17). first dovetail groove parallel to the direction (first engagement groove part 24a, 24a '), and said first dovetail groove (first engaging groove portion 24a, 24a') a second ant perpendicular to the groove (first engaging groove portion 24b, 24b ') are formed from a cross shape, said first, second tube holding member (the upper tube pillow 13, the lower tube pillow 14) the first, second Are provided so as to be relatively movable in the direction in which the bent pipes (10, 11) extend and in the direction perpendicular thereto.

  According to such a configuration, it is possible to avoid an excessive force in the lateral direction from acting on the pair of tube holding members that hold the bent tubes together. Moreover, the tube holding members can be assembled to the tube holding member from the direction in which the tube holding portion extends.

(A) is a plan view of the bent pipe, (b) is a side view of (a), (c) is a plan view of the bent pipe of (a) with an increased number of bent pipes, and (d) is ( (c) is a side view, and (e) is a longitudinal cross-sectional view of the bent portion of (c). (A) is a top view of a bending pipe, (b) is a side view of (a), (c) is a longitudinal cross-sectional view in the bending part of (a). It is a detailed front view of the nozzle of FIG.1 (e) and FIG.2 (c). It is a horizontal sectional view in the rib part of the upper tube pillow of Drawing 3, and the 1st and 2nd lower tube pillow. It is a longitudinal cross-sectional view in the part between the ribs of the upper tube pillow of FIG. 3, and a 1st, 2nd lower tube pillow. FIG. 4 is an exploded perspective view for explaining engagement protrusions and engagement grooves provided on the lower surface of the upper tube pillow and the upper surface of the first lower tube pillow in a state where the back surface side of FIG. 3 is the front side. (A) is sectional drawing which shows the relationship between the engagement protrusion of the upper pipe pillow of FIG. 6, and the engagement groove | channel of a 1st lower pipe pillow, (b) is a longitudinal cross-sectional view of (a). (A) is sectional drawing which shows the relationship between the engagement groove | channel of the upper pipe pillow of FIG. 6, and the engagement protrusion of a 1st lower pipe pillow, (b) is a longitudinal cross-sectional view of (a). FIG. 7 is an explanatory perspective view for assembling the upper tube pillow of FIG. 6 on the first lower tube pillow from the center line direction of the tube holding unit. (A) is the perspective view seen from arrow A1 direction in the state in which the upper tube pillow of FIG. 9 was assembled | attached on the 1st lower tube pillow, (b) is the right front view of (a). (A) is explanatory drawing when a bending pipe is curved and arrange | positioned from upper left to the lower right, (b) is explanatory drawing when a bent pipe is curved and arranged from lower left to the upper right. (A) is explanatory drawing which shows the other example when it arrange | positions by curving a curved pipe from upper left to the lower right, and (b) is when curved pipe is arranged by curving from lower left to upper right. It is explanatory drawing. (A) is explanatory drawing of the state which shifted the upper tube pillow of FIG. 10 to the left side with respect to the 1st lower tube pillow, (b) is a right front view of (a). (A) is explanatory drawing of the state which shifted the upper tube pillow of FIG. 10 to the right side with respect to the 1st lower tube pillow, (b) is a right front view of (a). (A) is an explanatory perspective view for assembling the upper tube pillow on the first lower tube pillow from the lateral direction of the tube holding portion, and (b) is a right front view of (a). (A) is a perspective view for explanation in the middle of assembling the upper tube pillow on the first lower tube pillow from the lateral direction of the tube holding portion, and (a) right after the upper tube pillow is assembled on the first lower tube pillow. It is a front view. It is explanatory drawing of the conventional nozzle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... 1st bent pipe 11 ... 2nd bent pipe 12 ... nozzle stage 13 ... upper pipe pillow (1st pipe holding member)
13b1 ... lower surface (plane)
13g ... concave portion (first tube holding portion)
14 ... Lower pipe pillow (second pipe holding member)
15 ... 1st lower pipe pillow 15a1 ... Upper surface (plane)
17 ... Tube holding hole (second tube holding portion)
23, 23 '... engaging protrusion (protrusion)
24, 24 '... engaging groove (ant groove)
24a, 24a '··· first engaging groove portion (first ant groove)
24b, 24b '··· second engaging groove portion (second of the ant groove)
O1, O2 ... center line

Claims (2)

A first pipe holding member having a first left and right side wall, a first wall connecting the first left and right side walls, and a first pipe holding part provided between the first left and right side walls; ,
A second pipe holding member having a second left and right side wall, a second wall connecting the second left and right side walls, and a second pipe holding portion provided between the second left and right side walls; With
First and second planes respectively provided on the first and second walls and aligned with each other ;
It said first, second perpendicular to the first center line is parallel to the direction extending first dovetail groove and the first dovetail groove of the tube member which is held in and the tube holding portion provided on one of the second plane Engagement grooves formed in a cross shape from the dovetail portion of
A projection provided on the other of the first and second planes and slidably engaged with the engagement groove,
The dovetail groove is a first engagement groove provided in the first plane and a second engagement groove provided in the second plane,
The protrusion is provided on the first plane and engages with the second engagement groove, and the protrusion is provided on the second plane and engages with the first engagement groove. A second protrusion,
The first dovetail groove portion of the first engagement groove and the first dovetail groove portion of the second engagement groove are opened at both ends in the direction in which the center line of the tube holding portion extends and the first engagement groove 2. A nozzle according to claim 1, wherein the second dovetail groove portion of the groove and the second dovetail groove portion of the second engagement groove are open to the side walls located on opposite sides . A plurality of nozzles according to claim 1 are arranged at intervals in the extending direction of the first and second bent pipes arranged in parallel ,
The first of said pipe base, the the second tube holder first, by holding the second curved tube, respectively, said first bend and the second bend pipe between so as to be bonded held together A pipe side-by-side holding structure,
The first of said pipe base, the second tube holding member is provided to be relatively movable by said first, second direction of extension of the bent pipe and said second dovetail groove and the projection in a direction perpendicular thereto Curved pipe side-by-side holding structure characterized by being formed.

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