JP2011085242A - Press molding nut for piping band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a nut for a piping band from a steel plate by drawing. <P>SOLUTION: The nut for the piping band is configured so as to form a bottom wall 51 with hexagon of planar surface and a square tube wall 53 with hexa-surface of outside which stands up on its outer periphery by performing drawing on the steel plate of 0.8 mm in thickness and to form a cylindrical wall 52 of central position of the bottom wall 51 by performing burring and tapping on it. The square tube wall 53 is formed of long walls 54 with a V-shape planar surface on an opposed wall adjacent to the hexa-surface of outside and a short wall 55 which extends from the bottom wall 51 to an intermediate position and forms the long walls 54 in one piece on the side of the bottom wall 51 by disposing a wide groove 56 between the long walls 54. The nut for the piping band is suitable for drawing and can be achieved to turn by both a fingertip and a wrench for efficient piping work. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a press-molded nut for a piping band used for supporting a piping.

  As a press-molding nut for this type of piping band, the following Patent Document 1 by the present inventor is known. According to this, a flat hexagonal bottom wall and a short inner side standing upright at the bottom wall central position are known. A cylindrical wall of the burring process and a rectangular tube wall of six long outer sides standing upright along the outer shape of the bottom wall, a female screw is arranged on the inner surface of the cylindrical wall of the short inner side, and six long outer surfaces In this case, the bottom wall side of the rectangular tube wall is formed as a widened portion that is widened and inclined, and the narrowed portion is formed by narrowing the tip side, and the steel plate having a thickness of 1 mm is bent and integrally formed.

JP-A-10-159823

  In this case, rotation with the fingertip of the forming nut and rotation with a wrench can be performed, and the piping suspension work of the piping band can be efficiently performed. However, the forming nut expands the bottom wall side to the rectangular tube wall. Since it is assumed to be provided with a widened portion having an open inclination and a rotating portion having a hexagonal cross section, the shape of the molded nut is complicated, resulting in a complicated production process. Although it is necessary to make it comparatively small and highly accurate, in this case, for example, a gap due to molding displacement remains on the joint end surface of the six rectangular tube walls, or wrinkles occur in the joint end surface portion. There is still a possibility of causing molding defects. Therefore, the possibility of the molding defects may become an obstacle to mass production of this type of molded nut that requires high accuracy.

  The present invention has been made in view of such circumstances, and the problem to be solved is that it can be mass-produced as easily and reliably as possible and can be obtained with high accuracy, particularly for a piping band, The object is to provide a press-molded nut for a piping band that is easy to use.

  In accordance with the above-described problems, the present invention uses a steel plate having a thickness as thin as possible, and draws the steel plate to form a flat hexagonal bottom wall and six long and short outer sides along the outer shape. In addition to forming a rectangular tube wall, the cylindrical wall inside the short wall at the center of the bottom wall is formed by burring and tapping, so that mass production can be made as easily and reliably as possible without molding defects. And the rotation of the rectangular tube wall of the six outer surfaces of the long and short sides by the fingertip and the rotation by the wrench, respectively, that is, the invention according to claim 1, the bottom wall of the plane hexagon, A short inner cylindrical wall standing upright at the center of the bottom wall, and six rectangular tube walls on the outer short side by burring and standing up along the outer shape of the bottom wall. The tapped female thread is arranged and the outer side of the long and short sides A short wall is arranged by cutting the long wall between the long walls in the circumferential direction of the cylinder wall so as to reach an intermediate position from the front end toward the bottom wall side, to form a steel plate with a wall thickness of 0.8 mm. It is a press-molded nut for a piping band, which is formed by drawing and integrally forming.

  In addition to the above, the invention according to claims 2, 3 and 4 is characterized in that the invention according to claim 2 has a length of the rectangular tube wall so that each molded nut has a favorable form. The dimension wall is disposed opposite to a pair of adjacent opposing wall surfaces of the outer six surfaces so as to form a plane V shape excluding the corner portions at both ends, and the short wall is widened at the corner portions at both ends therebetween. The press-molded nut for a piping band according to claim 1, wherein the long wall of the rectangular tube wall is formed on the outer six surfaces. 2. The piping band according to claim 1, wherein six faces are arranged on each side of the first and second short walls are arranged below the narrow grooves at the corners between them. The invention according to claim 4, wherein the height of the long wall of the rectangular tube wall is set to 0. And 8～1.2Cm, is obtained by a pipe band for press molding nut according the height of the part length walls to claim 1, 2 or 3, characterized in that as 0.1～0.5Cm.

  In addition to the above, the inventions described in claims 5 and 6 are the same as the invention described in claim 5, in which the nut and the band piece of the piping band are tanned. It is set as the hanging piece buckle fastening which fastens and fixes to a buckle, It is set as the press molding nut for piping bands of Claim 1, 2, 3 or 4, The invention of Claim 6 is said piping The band is formed by a band piece for temporarily placing a pipe having a bending angle of 1/2 or more and a pair of band pieces divided by a band piece for holding a pipe having a remaining bending angle. The press-molded nut for a piping band according to Item 5.

  The present invention uses each of these as the gist of the invention as means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 is a flat hexagonal bottom wall in which a steel plate having a thickness as thin as possible is used to draw the steel plate. And forming a rectangular inner wall of six long and short outer sides along the outer shape and forming a short inner cylindrical wall at the center of the bottom wall by performing burring and tapping. By enabling the rotation of the square tube wall with the fingertip and the rotation with the wrench, respectively, mass production can be performed as easily and reliably as possible, and high accuracy can be achieved, making it particularly suitable for piping bands and improving usability. An excellent press-molded nut for a piping band can be provided.

  In addition to the above, the inventions described in claims 2, 3 and 4 can be formed in a form that is easy to use, and the inventions described in claims 5 and 6 In addition to the above, each can be of a suitable use.

It is a front view which shows the use condition of a piping band. It is an enlarged front view which shows the hanging piece vicinity of a piping band. It is a perspective view which shows the relationship of the band piece of a piping band. It is a front view of a forming nut. It is a top view of a forming nut. It is a side view of a forming nut. It is an enlarged front view which shows the hanging piece vicinity of the piping band which concerns on another example. It is a front view of a forming nut. It is a top view of a forming nut. It is a side view of a forming nut.

  The present invention will be described in more detail with reference to the drawings. In FIG. 1 to FIG. 6, A is a piping band, and 5 is a hanging piece tangle buckle for fastening and fixing the band piece of the piping band A to the tangle. It is a press-molded nut.

  In this example, the piping band A is divided into a pair of bands composed of a band piece 2a for temporarily placing a pipe having a bending angle of 1/2 yen or more and a band piece 2b for holding a pipe having a remaining bending angle. It is formed of a piece, and is fastened and supported by bolts and nuts 4 and 5 inserted into a suspension piece 22 standing on the upper ends of the respective band pieces 2a and 2b, and the suspension piece of the band piece 2a for separate or temporary pipe placement In this example, it is suspended and supported by a separate buckle 1, and the pipe 7 is temporarily placed on the band piece 2 a for temporarily placing the pipe, and the band piece 2 b for holding the pipe is provided. By expanding and rotating in the outer circumferential direction of the pipe, the connection free ends 3 formed on these band pieces 2a and 2b are connected to each other at an intermediate position in the circumferential direction so that the pipe 7 by the pair of band pieces 2a and 2b is connected. At this time The connection free end 3 is a pair of band pieces with a step receiving portion 31 having a diameter larger than the diameter of the band pieces 2a and 2b and a width of 1/2 so that they can be engaged with each other in an X shape. 2a, 2b is provided with a tip overlapping piece 33 which is arranged via an inclined connecting piece having a notch groove 32 opposite in the width direction and overlaps the step receiving portion 31.

  In this example, the band piece 2a for temporary placement of the pipe band A has a curved angle so that the pipe 7 can be stably supported and supported in a state where the band piece 2a is disposed on the tumble buck 1. For example, in a state where the hanging piece 22 is fastened and fixed to the buckle 1, an angle of about 220 ° is formed from the contact surface of the hanging piece 22 to the tip of the step receiving portion 31. The receiving portion 31 has a bending angle of about 10 °, and the band piece 2b for holding the pipe also has a bending angle of about 140 ° to the tip of the step receiving portion 31 and the step receiving portion 31 The bending angle is also about 10 °. At this time, the step receiving portion 31 has a diameter that is several degrees larger than the inner diameter of the band pieces 2a and 2b, for example, about 30 mm, for example, about 33 mm. It is arranged so as to be positioned on a concentric circle having a size of about 2 mm.

  At this time, the pair of band pieces 2a, 2b are provided with bolt holes 23 through which the bolts 4 are inserted into the respective suspension pieces 22, and in this example, the bolt holes 23 are used for temporarily placing the pipes. The band piece 2a for use is a circular through-hole bolt hole that is somewhat larger in diameter along the axis of the bolt 4, while the pipe is temporarily placed on the suspension piece 22 of the band piece 2b for holding the pipe. The upper end position is aligned with the circular bolt hole 23 arranged in the hanging piece 22 of the band piece 2a for use, and the long bolt hole 23 directed in the lower direction from the bolt hole is arranged.

  Further, in the pair, the vicinity of the suspension piece 22 of the band piece 2a for holding the pipe is set as a large-diameter curved portion 25 having a diameter larger than the diameter of the band piece 2b, and the suspension piece 22 is erected from the large-diameter curved portion 25. At this time, the large-diameter bending portion 25 has a bending angle of, for example, about 20 ° and an inner diameter of about 33 mm, which is several degrees larger than the step receiving portion 31. Similarly, the large-diameter curved portion 25 is disposed on a concentric circle that is about 2 mm larger than the band pieces 2a and 2b. By arranging the large-diameter curved portion 25 in the pipe holding band piece 2b in this way, when the band piece 2b for pipe holding is rotated and expanded, the lower end portion of the suspension piece 22 of the band piece 2b is The bolts 4 were fastened to the bolts 4 so as to prevent the rotation of the pipes 7 temporarily placed on the band pieces 2a for temporarily placing the pipes from being obstructed as much as possible. By slightly loosening the nut 5, the large-diameter curved portion 25 avoids contact with the pipe 7 so that the band piece 2 b for holding the pipe can be smoothly expanded and rotated.

  The free connecting end 3 of each band piece 2a, 2b is connected to the step receiving portion 31 of each band piece 2a, 2b by the mutual fitting of the notch groove 32 between the step receiving portion 31 and the tip overlapping piece 33. 33 is placed and superposed, and the free ends of these band pieces 2a and 2b are connected by performing X-shaped cross-engagement so that the half-width notch groove 32 and the inclined piece mesh with each other. Then, the pipe 7 is fitted and supported. At this time, the tip overlapping piece 33 is connected to the band piece 2a, 2b via the inclined connecting piece in which the notch groove 32 is arranged in the step receiving part 31. In addition, each step receiving portion 31 is positioned on the outer peripheral side of the piping band A, and the tip overlapping piece 33 is positioned on the inner peripheral side, thereby providing reliable fitting support of the pipe 7. At this time, the tip polymerized piece 33 of this example is used. This is disposed at an angle slightly larger than the diameter of the band pieces 2a and 2b by about 1 to 2 degrees, and the diameter of the band pieces of about 1 to 2 degrees at the tip located on the notch groove 32 side. A distal end bending portion 34 that absorbs the difference is disposed, and the distal end bending portion 34 fills a gap due to a difference in diameter of, for example, about 2 mm in the connected free end state, and the pipe 7 has both end portions in the width direction. By supporting and supporting the pipe 7, the pipe 7 can be surely supported without generating a gap in the pipe 7 due to the arrangement of the connection free end 3.

  A forming nut 5 that fastens to the bolt 4 inserted through the hanging piece 22 and suspends and fixes the pair of band pieces 2a, 2b to the tumble buck 1 includes a flat hexagonal bottom wall 51 and a center of the bottom wall 51. A short inner cylindrical wall 52 erected at a position, and six rectangular tube walls 53 of longer and shorter outer sides erected and arranged along the outer shape of the bottom wall 51. A tapped female screw is arranged, and the long wall 54 is cut between the long walls 54 in the circumferential direction of the rectangular tube wall 53 on the six long and short outer sides so as to reach an intermediate position from the tip toward the bottom wall 51 side. Thus, the short wall 55 is arranged, and the steel sheet having a thickness of 0.8 mm is subjected to a drawing process and integrally formed. In this example, the forming nut 5 is formed of the rectangular tube wall 53. The long wall 54 is attached to a pair of adjacent opposing wall surfaces of the six outer surfaces. Certain short-sized wall 55 disposed oppositely to form a flat V-shaped except for the corner portion of the end as disposed in the lower groove 56 of the wide corner portions at both ends between them.

  In this example, the steel plate is the one having the above thickness of 0.8 mm. This is because the bolt 4 used for the suspension support of this kind of piping band A is generally M6 or M8. Therefore, the height of the female thread crest must be at least 0.54 mm. For example, when a steel plate with a thickness of 0.6 mm is used, the inner side of the short side is slightly displaced by a tap. On the other hand, there remains a possibility of causing threading failure due to a cut in the cylindrical wall 52. On the other hand, if the wall thickness is 0.8 mm, a commercially available standard steel plate can be used, and the cylindrical wall 52 has a thickness in the tapping process. This is because a margin can be secured and such threading defects can be prevented as effectively as possible.

  For example, the steel sheet is formed with the above-described drawing process to form a rectangular tube wall 53 having six long and short outer sides and a short inner cylindrical wall 52 by performing burring and tapping, that is, a hole. The drawn steel plate is drawn to form a rectangular tube wall 53 with a bottom wall 51, the hole is punched in the center of the bottom wall, subjected to burring and tapping, and then cut from the steel plate to form a nut. In this example, these steps are set as a series of continuous steps, and mass production of the formed nut 5 is performed as efficiently as possible by supplying a steel plate of a roll. .

  At this time, the rectangular tube wall 53 of the molded nut 5 is formed as a long V wall shape of a pair of adjacent opposing wall surfaces as a long and short outer surface, and is a long wall 54 with a corner drop and a short wall. 55, the opposing walls that reach the corners at both ends of the pair of opposing walls between the long walls 54 are partially cut away so that the long walls 54 and the short walls 55 have different lengths. Since the wide groove 56, for example, a wide groove slightly wider than one side of the hexagon, is disposed in the drawing process, the wide groove 56 absorbs the drawing resistance, and, for example, the drawing of a wrinkle, an unevenness or the like By making it possible to effectively and appropriately prevent machining troubles caused by resistance and by integrating the long wall 54 on the bottom wall 51 side by arranging the short wall 55, the long wall 54 is Although it protrudes on the opposite side of the cylindrical wall 52, the long wall 54 is reinforced to strengthen it. To ensure, when fastened to the bolt 4, the bending of the long Sunkabe 54, torsion and the like are to be capable of preventing the occurrence as much as possible.

  Further, by forming the outer shape of the molded nut 5 with the long wall 54 and the short wall 55 by the rectangular tube wall 53 having six long and short surfaces, the molded nut 5 has a long dimension at the tip of the rectangular tube wall 53. By hanging the fingertip on the wall 54 part or the whole, the rotation of the bolt 4 with respect to the shaft can be performed, and the wide groove 56 exhibits an anti-slip action. The cylindrical wall 52 on the short inner side of the female screw arrangement is surrounded and extended toward the opposite side of the female screw, and a cylindrical part having six faces is formed at the tip thereof, so that rotation using a wrench is also ensured. It is supposed to be possible.

  In this example, the forming nut 5 is, for example, M6 or M8, and the height of the long wall 54 of the square tube wall 53 is 0.8 to 1.2 cm, and in this example, 1 cm is accurate. Is 1.0 cm, and the height of the short wall 55 is 0.1 to 0.5 cm, in this example, 0.5 mm, more precisely 0.45 mm. , About 1.5 cm for M8 and about 1.1 cm for M6, so that both the fingertip and the wrench can be rotated smoothly and reliably.

  The piping band A of the present example formed as described above fastens the buckle 1 and the pair of band pieces 2a and 2b by fastening each suspension piece 22 to the tangle 1 with the bolt 4 and the forming nut 5. Since it is shipped from the factory in an integrated state, the rotating nut 11 of the turnbuckle 1 is screwed to the suspension bolt 6 installed on the ceiling slab, and the molded nut 5 is slightly rotated, for example, about 2-3 times. Then, the free connecting end 3 of the band piece 2b for holding the pipe is rotated from the band piece 2a for temporarily placing the pipe and removed in a spring-up manner, and the pipe is opened from the open portion of the band piece 2b for temporarily placing the pipe. 7 is temporarily placed and placed on the band piece 2a, and then the band piece 2b for holding the pipe, which has been removed in the above-described manner, is raised in the outer circumferential direction of the pipe 7 with the axis of the bolt 4 as the center of rotation. Rotate with, i.e. expand and rotate, Cover the pipe 7 with the band piece 2b for holding the pipe, connect the free end 3 to the free end 3 of the band piece 2a for temporarily placing the pipe, and then tighten the forming nut 5 There is something to do.

  At this time, by slightly loosening the forming nut 5 by making the bolt hole 23 of the band piece 2b for holding the pipe a long hole and arranging the large-diameter curved portion 25 on the band piece 2b for holding the pipe. The band piece 2b can be opened and rotated with a sufficient margin and the connection free end 3 can be easily connected to improve the work efficiency as much as possible.

  In the figure, 12 is a retaining member for preventing the rotation nut 11 from falling, 21 is a reinforcing rib for the band pieces 2a and 2b, 24 is a rotation stopper for the bolt 4 of the hanging piece 22, and 35 is a pair of band pieces 2a and 2b. At the positions where the stepped portion 31 of the free connecting end 3 and the tip overlapping piece 33 face each other in the width direction of the band pieces 2a and 2b, the position deviates from the rotation trajectory of the band piece 2b for pipe holding. A plurality of protrusions having a protrusion width of 0.5 to 1.5 mm, 1 mm in this example, and a low protrusion, and when the connecting free ends 3 are connected, the broken surfaces face each other alternately in series, For example, the engagement small protrusions by the cut and raised protrusions arranged in two places are shown.

  FIGS. 7 to 10 show other examples of the molded nut 5. In this example, the molded nut 5 of the piping band A is connected to the long wall 54 of the rectangular tube wall 53 on the outer side 6. This is an example in which six surfaces are arranged on each surface and the short wall 55 is disposed below the narrow groove 56 at each corner portion between them. In the drawing process, the groove 56 portion absorbs the drawing resistance and can effectively and appropriately prevent the processing trouble caused by drawing resistance such as wrinkles and irregularities. It is.

  At this time, the long wall 54 is arranged so that it has six wide surfaces and the tip is cut off into a circular arc shape. For example, a slit-like narrow groove 56 having a width of about 1 mm is formed in the long wall. On the other hand, the short wall 55 having a height of, for example, about 1 to 2 mm, more precisely 1.5 mm, is placed upright in the vicinity of the base with the flat hexagonal bottom wall 51. As it was. Also in this case, by arranging the short wall 55, the six long walls 54 are integrated on the bottom wall 51 side in the same manner as described above, and the long wall 54 is similarly reinforced to ensure its strength. Thus, when the bolt 4 is fastened, the long wall 54 can be prevented from being bent, twisted or the like as much as possible. By applying a fingertip to the long wall 54 at the tip or the whole, the narrow groove 56 exerts an anti-slipping action, and the long and short six-sided rectangular tube wall 53 is a length in which six faces are aligned. By providing the dimension wall 54, rotation using a wrench can be reliably performed.

  Since the remainder is not different from the above example, the same reference numerals are given and redundant description is omitted.

  Even in this example, the molded nut is slightly loosened to temporarily place the pipe 7 on the band piece 2a for temporarily placing the pipe, and cover the pipe 7 with the band piece 2b for holding the pipe. Thus, the free connecting end 3 is connected to the free connecting end 3 of the band piece 2a for temporarily placing the pipe, and the forming nut 5 is fastened. Similarly, the bolt hole 23 of the band piece 2b for holding the pipe is used. Since the large-diameter curved portion 25 is arranged in the pipe holding band piece 2b, the pipe holding band piece 2b has a margin even if the molded nut 5 is slightly loosened. It is possible to facilitate the opening and rotation and the connection of the connecting free end 3 to improve the working efficiency as much as possible.

  Although the illustrated example is as described above, the mass production method shall be changed so that a flat plate is stamped and formed from a steel plate and subjected to drawing, burring, tapping, etc. in an appropriate order. In carrying out the present invention, a piping band, a hanging piece, a tongue buckle, a forming nut, a flat hexagonal bottom wall, a cylindrical wall, a rectangular tube wall with six long and short outer sides, a long wall, a short wall The specific shapes, structures, materials, relationships thereof, additions to these, methods for mass production of molded nuts, and the like can be in various forms as long as they do not contradict the gist of the invention.

A Piping band 1 Turnbuckle 11 Rotating nut 12 Nut retaining 2a Band piece for temporarily placing the pipe 2b Band piece for holding the pipe 21 Reinforcement rib 22 Hanging piece 23 Bolt hole 24 Anti-rotation rib 25 Large diameter curved portion 3 Free connecting end 31 Step receiving portion 32 Notch groove 33 Tip overlap piece 34 Tip bent portion 35 Engaging small protrusion 4 Bolt 5 Molding nut 51 Bottom wall 52 Cylindrical wall 53 Square tube wall 54 Long wall 55 Short wall 56 Groove 6 Hanging bolt 7 Piping

Claims (6)

  A flat hexagonal bottom wall, a short inner cylindrical wall standing upright at the center of the bottom wall, and a rectangular tube wall of six long and short outer sides by burring standing upright along the bottom wall outline, A tapped female screw is arranged on the inner surface of the short inner cylindrical wall, and the long wall is located at an intermediate position between the long walls in the circumferential direction of the rectangular tube wall on the six long and short outer sides and directed from the tip toward the bottom wall. A pipe-band press-molding nut, wherein a short wall is arranged by cutting it all the way, and a steel sheet having a thickness of 0.8 mm is drawn and integrally molded.   The long wall of the rectangular tube wall is disposed opposite to a pair of adjacent opposing wall surfaces of the outer six surfaces so as to form a plane V shape excluding corner portions at both ends, and a short wall is interposed between them. 2. The press-molded nut for a piping band according to claim 1, wherein the press-formed nut is arranged below the wide groove at the corners at both ends.   The long wall of the rectangular tube wall is arranged so as to form 6 surfaces on each of the 6 outer surfaces, and the short wall is disposed below the narrow groove at each corner portion between them. The press-molded nut for a piping band according to claim 1.   The height of the long wall of the square tube wall is set to 0.8 to 1.2 cm, and the height of the short wall is set to 0.1 to 0.5 cm. Press-molded nut for piping band as described.   The press-forming nut for a piping band according to claim 1, 2, 3, or 4, wherein the nut is a hanging piece tangle buckling that fastens and fixes a band piece of the piping band to the tangle.   The pipe band is formed by a band piece for temporarily placing a pipe having a bending angle of ½ yen or more and a pair of band pieces divided by a band piece for holding a pipe having a remaining bending angle. The press-molded nut for a piping band according to claim 5.

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