JP4311666B2 - Rectangular cross-section beam and processing method thereof - Google Patents

Description

  The present invention mainly relates to a configuration of a rectangular cross-section beam that can be easily connected at an arbitrary angle (including parallel) including a T-shaped vertical connection.

When performing T-shaped joint joining of a square cross-section beam to another square cross-section beam, there is a method of fastening using a fastener such as an L-shaped angle 53 and a tap screw 14 as shown in FIG. Conventionally, it is generally used.
KC type steel house A type standard construction specification (part of "joint hardware for steel house")

  However, the configuration of Non-Patent Document 1 requires the angle member 53 and increases the number of screws 14 and the like, which increases the part cost and the number of construction steps. Further, as shown in FIG. 17, when a load is applied to the beam 51 on one side, the angle member 53 at the joint portion is likely to be deformed and the joint portion is likely to be displaced or tilted, and the bending rigidity of the square cross-section beam is effective. Cannot be demonstrated.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  ◆ According to a first aspect of the present invention, there is provided a rectangular cross-section beam, which is provided with a concave portion on a side surface thereof, and the concave portion has an inclined surface inclined with respect to the side surface. The The “square cross-section beam” is not limited to a shape having a closed cross section such as a square pipe, and includes, for example, a beam having a U-shaped, L-shaped, Z-shaped, or Σ-shaped cross section. Further, it may be a beam having an open cross section such as channel steel.

  Thereby, a fastener such as a known screw can be passed through the inclined surface and directly joined to the other beam. Therefore, an L-shaped angle or the like is not necessary, and the necessary number of fasteners can be reduced, thereby reducing the number of parts and the number of manufacturing steps. Further, since the fastening force of the fastener can be used as it is, a strong bond can be obtained.

  ◆ According to a second aspect of the present invention, there is provided a rectangular cross-section beam having a hemispherical recess provided on a side surface thereof.

  Accordingly, even when the square cross-section beams are joined to each other at an oblique angle other than vertical, the fastener can be penetrated perpendicularly to the wall surface (inner surface) of the recess, so that a strong coupling can be reliably obtained. It is done.

  In the square cross-section beam, it is preferable that a large number of irregularities are formed on the inner surface of the concave portion.

  Thereby, the front-end | tip of a fastener becomes difficult to slip with respect to the inner surface of a recessed part, and a fastener can be reliably plunged into the position which the recessed part aimed. As a result, a strong bond can be realized more easily.

  ◆ According to a third aspect of the present invention, a rectangular cross-section beam is provided with a groove along the longitudinal direction of the beam on the side surface, and the groove is a groove wall surface inclined with respect to the side surface. A square cross-section beam is provided.

  Thereby, a coupling | bonding with the beam of the other party becomes easy and strong by letting a fastener penetrate the said concave wall surface.

  In the square cross-section beam, when the concave wall surface faces the side of the square cross-section beam facing the end of the square cross-section beam having the concave section, the inclined surface of the concave section It is preferable that they are substantially parallel.

  Accordingly, by allowing the fastener to penetrate perpendicularly to the inclined surface, the fastener also penetrates the concave wall surface almost perpendicularly, so that fastening is easier and stronger.

  ◆ According to a fourth aspect of the present invention, there is provided a method for joining two rectangular cross-section beams, each side of the square cross-section beam being provided with a groove along the longitudinal direction of the beam, After having the concave wall surface inclined with respect to the side surface, the side surfaces of the two rectangular cross-section beams facing each other and having the concave surface are provided. It is arranged in parallel so as to be perpendicular to the opposite side surfaces, and a fastener is inserted into the concave wall surface of the concave stripe so that the fastener penetrates the opposite side surfaces of the two rectangular cross-section beams. A joining method for joining square cross-section beams is provided.

  Thereby, an easy and strong coupling | bonding is obtained and rigidity can be easily increased by couple | bonding two square cross-section beams in parallel. Moreover, if it comprises so that the head of a fastener may be accommodated in the inside of a concave line, when attaching another member to the side surface of a square cross-section beam, the head of a fastener and the said other member do not interfere easily. Can be configured.

  In the method for joining the square cross-section beams, a second concave stripe is provided on the opposite side surface of each square cross-section beam, and the second concave stripe is inclined with respect to the opposite side face. While having a strip wall surface, it is preferable that this 2nd groove wall surface is substantially parallel to the groove wall surface of the said groove.

  Accordingly, by allowing the fastener to penetrate perpendicularly to the concave wall surface, the fastener also penetrates the second concave wall surface almost perpendicularly, so that fastening is easier and stronger.

  In the method for joining the square cross-section beams, it is preferable to interpose an intervening member between the facing side surfaces.

  Thereby, the frictional force between the opposing side surfaces of the two square cross-section beams can be increased, and the coupling can be further strengthened. In addition, when the square cross-section beam is made of metal, it is possible to prevent an unpleasant sound in which the metals rub against each other.

  In the method for joining the square cross-section beams, it is preferable that a convex portion facing the interposition member is provided on the opposite side surface of the square cross-section beam.

  As a result, the two rectangular cross-section beams are more firmly coupled so that the convex portion bites into the interposition member.

  ◆ According to a fifth aspect of the present invention, there is provided a square cross-section beam which is a square cross-section beam and has a side surface provided with a ridge along the longitudinal direction of the beam.

  Thereby, since it can position easily and correctly with the cross-sectional beam of the other party joined, joining in an exact position is implement | achieved.

  In the square cross-section beam, it is preferable that a plurality of the ridges are provided on one side surface.

  Thereby, positioning at the time of joining becomes further accurate.

  ◆ In the other side of the square cross-section beam that joins the above-mentioned square cross-section beam, when a notch is provided at the end and the end of the square cross-section beam faces the side of the square cross-section beam, It is preferable that a notch faces the said protruding item | line.

  Thereby, the positioning at the time of joining of a square cross-section beam is easy because a protruding item | line fits into a notch.

  ◆ According to the sixth aspect of the present invention, a hollow rectangular cross-section beam is formed with cuts at the four corners of its longitudinal end portion, and four side surfaces at the end portion are substantially perpendicular to the expanding direction. A square cross-section beam is provided that is bent into

  As a result, a square cross-section beam that can easily be joined in a T-shape to the other beam is realized.

  ◆ According to a seventh aspect of the present invention, there is provided a method for processing a longitudinal end portion of a hollow rectangular cross-section beam, in which cuts are formed at the four corners of the end portion, and the end portion where the cut is formed is pushed into a die. By applying, a method for processing the longitudinal end of the hollow rectangular cross-section beam is provided, in which the four side surfaces of the end portion are bent in the expanding direction.

  Thereby, the above-mentioned square cross-section beam that can be easily joined by a simple method can be provided.

  Next, embodiments of the invention will be described. FIG. 1 is an enlarged view of one end portion of a square cross-section beam 10 according to the first embodiment of the present invention. As shown in this figure, the cross-section of the square cross-section beam 10 is formed in a substantially square shape. It has two side surfaces 11. Each of the four side surfaces 11 is formed with two recesses 12 at positions close to the end portions. Each recess 12 has an inclined surface 13 that is inclined with respect to the side surface 11 on which it is formed. Specifically, the inclined surface 13 has an inclination that gradually becomes shallower from the deepest portion of the recess 12 toward the axial end portion of the beam 10. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1. As shown in FIG. 2, the square cross-section beam 10 is formed in a hollow shape.

  With this configuration, as shown in FIG. 1, the tap screw (fastening) is applied to the inclined surface 13 of each recess 12 with the end of the square cross-section beam 10 of the present embodiment facing the side surface of the opposite square cross-section beam 20. The tool 14 is inserted vertically, and the side surface of the opposite square section beam 20 is obliquely penetrated through the screw 14 (see FIG. 2).

  In this way, the square cross-section beam 10 can be joined to the mating square cross-section beam 20 in a T shape. Since this method does not use an L-shaped angle as shown in FIG. 16 and the number of tap screws 14 can be reduced, the number of parts and the number of construction steps can be reduced. Moreover, the coupling | bonding which utilizes the fastening force of the tap screw 14 which is a fastener as a coupling force as it is is implement | achieved, As a result, a coupling | bonding can be strengthened. At this time, the inclined surface 13 serves as a seating surface on which the head of the screwed screw 14 is seated.

  In the example of FIG. 1, the shape of the recess 12 is a shape that is notched in a cylindrical shape with an inclined axis. However, as shown in FIG. 3, the recess 12 may be cut out in a quadrangular pyramid shape, or as shown in FIG. 4, the recess 12 may be cut out in a triangular prism shape with an inclined axis.

  Moreover, as shown in FIG. 5, the recessed part 12 can also be formed in a hemispherical shape. In this case, it becomes easy to connect the square cross-section beam 10 to the opposite square cross-section beam 20 not only vertically but also at an arbitrary angle. FIG. 5 shows an example in which a square cross-section beam 20 as a truss upper chord member is joined obliquely to a square cross-section beam 10 as a truss lower chord member when a truss hut is configured. In FIG. 5, the end of the square cross-section beam 10 is cut obliquely in advance, and a hemispherical recess 12 is formed on the side surface of the square cross-section beam 10 in the vicinity of the cut end. Then, with the oblique cut end facing the side surface of the opposite square cross-section beam 20, the tap screw 14 is inserted into the recess 12, and the mating square cross-section beam 20 is passed through the tap screw 14. is doing. If the concave portion 12 is formed in a hemispherical concave shape as shown in FIG. 5, the screw 14 can be formed into the concave portion 12 by appropriately determining the penetration portion of the tap screw 14 in the concave portion 12 even when the square cross-section beams 10 and 20 are joined at any angle. It is possible to penetrate perpendicularly to the wall surface, and joining becomes easy and reliable.

  In the configuration example of FIG. 5, a large number of fine irregularities are formed on the inner surface of the hemispherical concave portion 12, which makes it easy to pierce the tip of the tap screw 14 at the target position in the concave portion 12, so that the bonding is possible. It is made easier. How to determine the height difference of the unevenness is arbitrary, but it is preferable that there is a height difference so that the tip of the tap screw 14 is caught on the inner surface of the recess 12 without slipping.

  FIG. 6 shows a square cross-section beam 15 of the second embodiment and a square cross-section beam 21 of the third embodiment. The rectangular cross-section beam 15 shown on the right side in FIG. 3 has the configuration of the square cross-section beam 10 in FIG. 1 except that the concave portions 12 and 12 are formed only on the upper and lower surfaces of the four side surfaces 11. It is the same.

  As shown in FIG. 6 and FIG. 7 as a cross-sectional view taken along the line B-B, among the four side surfaces of the square cross-section beam 21, two side surfaces 22, 22 facing each other have two recesses 23. -23 is formed. The concave stripes 23 and 23 have a V-shaped cross section and are provided along the longitudinal direction of the square cross-section beam 21. The concave wall surface 24, which is a wall surface on one side of the concave stripe 23, is configured to be inclined with respect to the side surface 22, and when the end of the square cross-section beam 15 faces the side surface 22, the concave portion 12. It is comprised so that it may face substantially parallel to the inclined surface 13 of this (refer FIG. 7). As a result, the tap screw 14 penetrates the inclined surface 13 and the concave wall surface 24 substantially perpendicularly, and the fixing with the tap screw 14 is easy and reliable. In addition, the concave strips 23 and the convex strips 25 are provided on the side surfaces 22 and 22 on both sides of the square cross-section beam 21 because either one of the side surfaces 22 and 22 of the square cross-section beam 21 is arbitrarily selected (or both This is because the rectangular cross-section beam 15 can be joined to the side surface. In addition, the shape of the concave strip 23 is not limited to the V shape, and may be configured, for example, in a V shape having a rounded bottom portion or a shape having a bottom surface parallel to the side surface 22 on the bottom portion. In short, the concave line 23 only needs to have a concave wall surface 24 inclined with respect to the side surface 22, and its specific shape is not limited.

  In addition, as shown in FIG. 6, on the side surface 22 where the concave stripe 23 of the square cross-section beam 21 is provided, two convex stripes 25 are parallel to the concave stripe 23 on the outer side of the two concave stripes 23. Is formed. As shown in FIG. 7, the interval between the ridges 25 and 25 is set to be slightly larger than the thickness of the opposite square section beam 15, and the end of the square section beam 15 is located between the ridges 25 and 25. It can be screwed with a tap screw 14 in the inserted state. As a result, the two square cross-section beams 15 and 21 can be accurately positioned and joined. In particular, since a plurality of (two) ridges 25, 25 are provided, positioning is more accurate and easy.

  FIG. 8 shows a modification of the square cross-section beam 15 shown in FIGS. 6 and 7, and the square cross-section beam 16 of this modification is formed to have substantially the same thickness as the counterpart square cross-section beam 21, and the convex At positions corresponding to the strips 25 and 25, notches 44 and 44 are formed at the ends of the square cross-section beam 16. The notches 44 and 44 face the ridges 25 on the side face 22 when the end of the square section beam 16 faces the side face 22 of the square section beam 21. Therefore, when the beams are joined, the protrusions 25 are fitted into the notches 44, so that positioning becomes more accurate and easy. In the configuration of FIG. 8, a cylindrical collar 19 is externally fitted to the shaft portion of the tap screw 14, thereby suppressing end buckling at the time of screw fastening.

  FIG. 9 shows a further modification in the case where the notch 44 is provided, and shows a case where the slightly thin square cross-section beam 18 is joined to the opposite square cross-section beam 21.

  Next, with reference to FIG. 10, an embodiment for joining the square cross-section beams 26 and 27 arranged adjacent to each other will be described. The two rectangular cross-section beams 26 and 27 are arranged in parallel so that the side surfaces 28 and 28 on one side face each other. In each of the square cross-section beams 26 and 27, a V-shaped recess 30 is formed on the other side surface 29 perpendicular to the side surface 28. The concave line 30 has a concave wall surface 30a inclined with respect to the side surface 29 on which the concave line 30 is formed. Then, the tap screw 14 is vertically inserted into the groove wall surface 30a of the groove 30, and the screw 14 has two rectangular cross sections as shown in FIG. The beams 26 and 27 are joined by obliquely penetrating the side surfaces 28 and 28 of the beams 26 and 27 facing each other.

  As a result, easy and strong coupling between the two rectangular cross-section beams 26 and 27 is obtained, and the rigidity can be easily increased by coupling the two square cross-section beams 26 and 27 in parallel.

  An interposition member 31 is interposed between the side surfaces 28 and 28 of the two rectangular cross-section beams 26 and 27 in FIG. As a result, the frictional force between the side surfaces 28 of the two rectangular cross-section beams 26 27 can be increased, and the coupling can be further strengthened. Moreover, when the square cross-section beams 26 and 27 are made of metal, an unpleasant sound in which the metals rub against each other can be prevented by sandwiching the interposition member 31 therebetween. The shape of the interposition member 31 is not particularly limited, but is preferably formed in a plate shape. Further, as the material of the interposition member 31, for example, rubber, plastic, wood, gel material, fiber material, concrete, metal, and the like can be used, but the material that can penetrate the engagement tool such as the tap screw 14 is used. preferable. The interposition member 31 is preferably formed of a material having a relatively high surface friction coefficient, such as rubber, plastic, or wood.

  FIG. 12 shows a modified example of the configuration of FIGS. 10 and 11. The rectangular cross-section beams 32 and 33 are formed with the concave stripes 30 on the upper and lower surfaces thereof, and further on the side surfaces 35 and 35 facing each other. The V-shaped second recess 34 is formed in a pair of upper and lower sides. Note that the second groove wall surfaces 34 a and 34 a through which the tap screw 14 penetrates in the second groove 34 are inclined with respect to the opposite side surface 35. The second concave wall surface 34 a is substantially parallel to the concave wall surface 30 a through which the tap screw 14 passes in the concave line 30. In this configuration, if the tap screw 14 is vertically inserted into the concave wall surface 30a of the upper and lower concave grooves 30, the screw 14 is inserted into the second concave stripe 32/33 on the side of the protrusion. The beams 32 and 33 can be coupled by penetrating the wall surface 34a substantially vertically and further penetrating the second concave wall surface 34a of the opposite square section beam 33/32 substantially vertically. Therefore, the coupling becomes more reliable and easy.

  In the configuration example of FIG. 12, convex ridges 36 and 36 as convex portions are formed at positions facing the interposition member 37 on the side surfaces 35 and 35 facing each other. And as a result of joining both the beams 32 and 33 with the screw | thread 14 so that the protruding item | line 36 may bite into the interposition member 37, the strong coupling | bonding of the square cross-section beams 32 and 33 is implement | achieved. In the case of the configuration shown in FIG. 12, it is preferable to use a material that is relatively soft and easily deformed, such as rubber, plastic, and wood, as the material of the interposition member 37. In addition, a convex part is not restricted to an elongate thing like the protruding item | line 36, For example, it is also possible to make it the dotted | punctate convex part arranged in multiple numbers.

  In FIG. 12, the concave and convex lines 30 on the upper and lower surfaces are deep enough to accommodate almost the entire head of the tap screw 14. Therefore, even when the face member 38 is attached to the upper surfaces of the beams 32 and 33 as shown in FIG. 12, interference between the head of the tap screw 14 and the face member 38 can be avoided.

  FIG. 13 shows a comparative example in which a face member 38 is pasted on the upper side without joining adjacent square cross-section beams 32 and 33 together. In this case, when a downward force F acts on the face member 38 at the boundary portion between the both cross-section beams 32 and 33, the lower portions of the both cross-section beams 32 and 33 move or deform away from each other, and the face member 38 is moved. May be deformed so as to protrude downward. In this regard, if adjacent square cross-section beams are joined together as shown in FIG. 12 (or FIG. 11), even if a strong downward force is applied to the face member 38 affixed thereto, the forces are coupled to each other. By doing so, it can be surely supported by a rectangular cross-section beam with improved rigidity.

  FIG. 14 shows an example of a processing method for joining the end of the square cross-section beam 39 to another square cross-section beam. In FIG. 14, at one end of a rectangular cross-section beam 39 formed in a hollow shape, cuts 40 having appropriate lengths are formed at the four corners. Then, the end portion where the cut 40 is formed is applied to a trapezoidal (quadrangular quadrangular pyramid) die 41 and the upper end of the die is hit with a hammer or the like, so that the end portions of the four side surfaces 42 are expanded. And the flange portion 43 is formed.

  Then, as shown in FIG. 15, the flange portion 43 of the square cross-section beam 39 subjected to the above processing is faced to the side surface of the opposite square cross-section beam 20, and the fold portion of the boundary where the flange portion 43 is formed is appropriately set. The two beams 39 and 20 can be easily joined by obliquely screwing the tapping screws 14 of the number.

  The preferred embodiments and modifications of the present invention have been described above, but the present invention is not limited to the above configuration. For example, the cross-sectional shape of the square cross-section beam is not limited to a square, and may be a rectangle, for example. Further, a slight radius may be formed at the corner of the cross-sectional shape. The present invention is not limited to a beam having a closed cross section such as a square pipe. For example, the present invention can be applied to a beam having a U-shaped, L-shaped, Z-shaped, or Σ-shaped cross section. It may be a beam that is not obstructed and has an open cross section such as channel steel. The fastener for joining the square cross-section beams is not limited to a tap screw, and for example, a nail, a screw nail, a blind rivet, a screw, or the like may be used.

The principal part expansion perspective view which shows the square cross-section beam of 1st Embodiment. FIG. The perspective view which shows the other example of the shape of a recessed part. The perspective view which shows the further another example of the shape of a recessed part. The perspective view which shows the example which formed the recessed part in the hemispherical shape. The principal part expansion perspective view which shows the square cross-section beam of 2nd and 3rd embodiment. FIG. 7 is a cross-sectional view taken along line B-B in FIG. 6. Sectional drawing which shows the modification of a square cross-section beam. Sectional drawing which shows the modification of a square cross-section beam. The perspective view which shows the structural example in the case of joining a square cross-section beam in parallel. CC sectional view of FIG. Sectional drawing which shows the other structural example which joins a square cross-section beam in parallel. Sectional drawing which shows the comparative example which affixed the face material on the upper side, without joining adjacent square cross-section beams. The perspective view explaining the processing method of the edge part of a square cross section beam. The principal part expansion perspective view which shows a mode that the square cross-section beam in which the edge part was processed is joined to the beam of the other party. The perspective view which shows the prior art example of T-shaped joining of a square cross-section beam. The perspective view explaining the solution subject of the prior art example of T-shaped joining of a square cross-section beam.

Explanation of symbols

10,15,16,17,20,21,26,27,32,33,39 Square cross section beam 12 Recess 13 Inclined surface 14 Tap screw (fastener)
23 Convex 25 Convex 44 Notch

Claims (7)

Hemispherical recesses provided on the side surface, rectangular cross-section beam, wherein a plurality of irregularities on the inner surface of the recess is formed. Concave along the longitudinal direction of the beam on the side surface is provided, the concave is a square-shaped cross-section beams that have a concave wall surface which is inclined with respect to the side surface,
The concave wall, a side surface of the rectangular cross-section beam, the opposed ends of the corner-section beams that have a sloping surface where the recesses are recesses provided on the side surface is inclined with respect to the side surface when the squareness cross beams, characterized in that are substantially parallel to the inclined surface.   A method of joining two rectangular cross-section beams, wherein a side surface of each square cross-section beam is provided with a concave line along the longitudinal direction of the beam, and the concave line wall is inclined with respect to the side surface. The two rectangular cross-section beams are parallel to each other so that the side surfaces on one side face each other, and the side surfaces provided with the concave stripes are perpendicular to the side surfaces facing each other. A rectangular cross-section beam characterized in that the square cross-section beam is arranged by inserting a fastener into the concave wall surface of the concave stripe and coupling the fastener through the opposite side surfaces of the two square cross-section beams. Joining method. A method for joining rectangular cross-section beams according to claim 3 ,
A second groove is provided on the opposite side surface of each square cross-section beam, and the second groove has a second groove wall surface that is inclined with respect to the opposite side surface. A method for joining rectangular cross-section beams, wherein the concave wall surface is substantially parallel to the concave wall surface of the concave stripe. A method for joining rectangular cross-section beams according to claim 3 or claim 4 ,
A method for joining rectangular cross-section beams, wherein an interposition member is interposed between the facing side surfaces. A method for joining rectangular cross-section beams according to claim 5 ,
The method of joining rectangular cross-section beams, wherein convex portions facing the interposition member are provided on the facing side faces of the square cross-section beams. A rectangular cross-sectional beam notch in the end portion is provided,
To the sides of the square-section beams provided with ridges along the longitudinal direction of the beam on the side surface, when facing the end portion, rectangular cross section, characterized in that the notch on the convex stripes facing Beams.

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