JP5014454B2 - Hanger type joint structure - Google Patents

Description

  The present invention relates to a hanger-type hull-joint structure in which a folded plate roof material is helix-joined with a hanger support body and a hanger fixed to the hanger support body as a support member.

  In this type of welded joint structure, the folded roof material is supported by a tight frame (suspender support) arranged at regular intervals in the direction of the eaves of the roof and a suspension fixed to each tight frame. Yes. Therefore, the roof strength can be improved by reducing the arrangement interval between the tight frame and the base frame, or by using the folded plate roof material having a large thickness dimension. While this type of countermeasure can be applied immediately, the number of tight frames, base frames, and suspensions is increased, and the thickness of the folded-plate roofing material is increased, resulting in increased material and construction costs. Inevitable.

  Many attempts have been made to improve the roof strength while avoiding the increase in material costs and construction costs as described above. For example, in Patent Document 1, a pair of fastening metal fittings sandwiching a helical joint portion on the right and left sides and a reverse-shaped regulator that holds both metal fittings from the outer surface side are added to provide a helical joint structure for folded plate roofs. It is prevented from being damaged by wind pressure. The fastening bracket and the restricting tool are arranged corresponding to each suspension.

  In the hanger of Patent Document 2, a hanger having a hook-shaped cross section and a leg portion fixed to the tight frame constitute a hanger, and reinforcement that enhances structural strength at a plurality of positions in the longitudinal direction of the helix. Ribs are provided to prevent the welded joint structure of the folded roof material and the suspension from being damaged by wind pressure.

  In the joint structure of the present invention, a catching claw is provided on the hanger to prevent the folded-plate roof material that has been subjected to wind pressure from coming off the hanger. Providing the receiving pawl is disclosed in Patent Document 3, for example. However, the catching pawls of Patent Document 3 are provided in order to maintain the temporary folded state of the adjacent folded plate roofing material and the suspension, and the significance of providing the catching pawls is different from the present invention.

Japanese Patent Laying-Open No. 2006-299565 (paragraph number 0031, FIG. 4) JP 2000-328727 A (paragraph number 0013, FIG. 1) No. 04-046414 (page 2, left column, lines 16-28, FIG. 3)

  As described above, as a measure for preventing the breakage of the joint structure between the folded-plate roof material and the hanging member, conventionally, the joined portion of the folded-plate roof material and the hanging member is reinforced with the reinforcing metal fittings, or the hanging member is used. The main focus was to increase the rigidity of the welded joint structure by improving its structural strength. However, the present inventor has reproduced the fracture phenomenon of the welded joint structure through experiments, and as a result of closely observing the process, it has been found that it is not sufficient to make the welded joint part highly rigid. I noticed.

  Generally, the bending strength in the vertical direction of the hanging member in use is sufficiently larger than the strength of the seam joint of the folded plate roofing material. Therefore, even when the folded plate roof material subjected to wind pressure elastically deforms in an outwardly bulging shape between adjacent hanging members, the upper end of the hanging member elastically deforms following the folded plate roof material. There is no. In the experiment performed previously, as shown in FIG. 12, the joint wall 41 of the outer folded plate roof material 40 that has been subjected to wind pressure expands while sliding along the outer surface of the hanger receiving portion 43 of the hanger 42. Finally, as shown in FIG. 12B, it was observed that the joining wall 41 was detached from the hull receiving portion 43 of the hanger 42, and the hull joining structure was destroyed. Based on the above findings, the present inventor has studied the measures for preventing the destruction of the welded joint structure, and as a result has proposed the present invention.

  The object of the present invention is to restrict the outside folded plate roof material that has been subjected to wind pressure from coming off from the hanger receiving portion, and to elastically deform the hanging member following the folded plate roof material that is elastically deformed. Thus, it is an object of the present invention to provide a highly reliable hanger-type screw joint structure that can eliminate the destruction of the screw joint structure.

  The present invention is directed to a hanger-type screw joint structure in which adjacent folded-plate roofing materials 3 are connected and fixed via a hanger 4 fixed to a hanger support 2. The hanger 4 includes a connecting portion 11 fixed to the hanger support 2 and a hull receiving portion 12 provided at the upper end of the connecting portion 11 and extending in the eaves-ridge direction. A receiving step portion 14 and a retaining claw 15 for receiving the outer folded plate roof material 3 in cooperation with each other are provided at the base end of the helical receiving portion 12 on the connecting portion 11 side. A corner-shaped notch 20 that promotes elastic deformation of the suspension 4 is formed on both the left and right sides of the connecting portion 11. The corner portion of the cutout 20 is rounded into a curved line.

  When the length of the left and right half portions of the screw receiving portion 12 is 100%, the corners of the notch 20 are formed in a curved line shape including an arc having a radius value of 20 to 250%.

  The left and right width L of the screw receiving portion 12 is set larger than the left and right width B of the connecting portion 11. The retaining claws 15 are formed by being cut downward and raised at the left and right ends of the screw receiving portion 12 projecting on both sides of the connecting portion 11.

  The entering corner of the notch 20 is formed by a curved line having a smaller radius of curvature as it approaches the lower edge of the connecting portion 11 and has a larger radius of curvature as it approaches the left and right edges of the connecting portion 11.

  The lower end of the retaining claw 15 protrudes slightly below the receiving step 14.

  The retaining claws 15, 16 are formed at the left and right ends of the shell receiving portion 12 and at a plurality of locations in the central portion of the shell receiving portion 12.

  The hanger 4 is fastened and fixed to the hanger support 2 with a bolt 6 through a fastening hole 13 provided in the connecting portion 11. The breaking strength at the corner of the notch 20 is set larger than the breaking strength of the fastening hole 13.

  In the present invention, the connecting portion 11 and the screw receiving portion 12 constitute the suspension 4, and a receiving step portion 14 and a retaining claw 15 are provided at the proximal end of the screw receiving portion 12 on the connecting portion 11 side. These 14 and 15 cooperate to receive the contact wall 17 of the outer folded plate roofing material 3. As described above, when the contact wall 17 is received by the receiving step portion 14 and the retaining claw 15, the retaining claw 15 prevents the joining wall 8 of the folded roof material 3 from sliding and moving in the expanding direction. Thus, it is possible to prevent the joining wall 8 from being detached from the shell receiving portion 12. Moreover, since the corner-shaped notch 20 rounded in the curved line shape is formed in the both right and left sides of the connection part 11, when the folded-plate roof material 3 elastically deforms in the shape of an outward bulge, the hanging element 4 is made into a folded-plate roof. It can be elastically deformed following the material 3. Therefore, according to the present invention, the hull-type hull-joint structure, which is superior in reliability to the hose-joint structure of the conventional rigid structure, is solved by preventing the hull-joint structure from being damaged by wind pressure. Can provide.

  When the length of the left and right half portions of the screw receiving portion 12 is 100%, when the corners of the notch 20 are formed in a curved line shape including an arc having a radius value of 20 to 250%, the suspension 4 is folded. The plate roof material 3 can be elastically deformed following the elastic deformation of the plate roof material 3. Further, the breaking of the connecting portion 11 starting from the corner where the notch 20 enters is eliminated, and the breaking strength of the hanger 4 can be satisfied. Incidentally, if the radius value of the corner is less than 20%, the corner portion of the notch 20 is broken before the maximum allowable load is applied to the suspension 4, and the strength is insufficient. Moreover, if the radius value of the entering corner exceeds 250%, the hanger 4 hardly bends and cannot follow the elastic deformation of the folded plate roofing material 3.

  If the flange receiving portion 12 is made wider than the connecting portion 11 and formed at the left and right ends of the flange receiving portion 12 projecting on both sides of the connecting portion 11 by cutting the retaining claws 15 downwards, It is possible to elastically deform both the left and right ends of the lever receiver 12. In addition, since the deformation force of the folded plate roofing material 3 is transmitted to the retaining claws 15 at the left and right ends, a large elastic moment is applied to the suspension 4 to connect the hull receiving portion 12 and the connecting portion 11 to the folded plate roofing material 3. The elastic deformation can be smoothly performed following the elastic deformation.

  If the corner of the notch 20 is formed with a curved line having a smaller radius of curvature as it approaches the lower edge of the connecting portion 11 and a radius of curvature that increases as it approaches the left and right edges of the connecting portion 11, the sectional moment of inertia of the suspension 4 It can be gradually changed from the central part toward the left and right sides. Therefore, it is possible to follow the elastic deformation of the folded plate roof material 3 and to elastically deform the suspension 4 flexibly, while at the same time sufficiently securing the breaking strength at the corners.

  If the lower end of the retaining pawl 15 protrudes slightly below the receiving step 14, when the joining wall 8 of the folded plate roofing material 3 is elastically deformed outwardly, the contact wall 17 is first removed. By biting into the lower end of the pawl 15, it is possible to more reliably regulate the joining wall 8 from trying to slide and move in the expanding direction. Therefore, it is possible to further reliably prevent the joining wall 8 of the outer folded plate roofing material 3 from elastically deforming in an expanded shape and coming off from the receiving step portion 14.

  If the retaining claws 15 and 16 are formed at the left and right ends of the screw receiving portion 12 and at a plurality of locations in the central portion of the screw receiving portion 12, the joining wall 8 is subjected to wind pressure and tries to slide in the expanding direction. Can be received with the retaining claws 15, 16, and the joining wall 8 can be reliably restricted from coming off from the shell receiving portion 12. Further, by forming retaining claws 16 at a plurality of locations in the central portion of the shell receiving portion 12, the secondary moment at the cross section in the central portion of the shell receiving portion 12 is reduced, so The portion and the right half can be elastically deformed around the portion where the retaining claw 16 is formed.

  If the breaking strength in the corner portion of the notch 20 is set larger than the breaking strength of the fastening hole 13 formed in the hanging element 4, the breaking corner portion of the notch 20 is broken before the maximum allowable load acts on the hanging element 4. Thus, the reliability of the hanger-type helical joint structure can be improved.

It is a front view of a hanging machine concerning the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal front view of a hanger type screw joint structure according to a first embodiment. It is a perspective view which shows the assembly | attachment structure of a tight frame and a hanger. It is a vertical front view which shows the detail of a screw joint structure. It is a vertical side view which shows the deformation | transformation state of a folded-plate roof material. It is a graph which shows the result of the strength test of the hanging machine from which a notch shape differs. It is a graph which shows the result of the strength test of another hanging machine from which a notch shape differs. It is a vertical front view of the hanger type screw joint structure concerning Example 2. FIG. It is a vertical side view of the hanger type joint structure according to the second embodiment. It is a vertical front view of the hanger type screw joint structure concerning Example 3. FIG. It is a vertical front view of the hanger type screw joint structure concerning Example 3. FIG. It is a vertical front view which shows the process in which the conventional helical junction structure destroys.

(Example 1) FIG. 1 thru | or FIG. 7 shows the Example of the hanger type screw joint structure based on this invention. 2 and 3, reference numeral 1 is a base frame made of a shape steel, reference numeral 2 is a tight frame (suspender support) in which a band plate is formed in a sawtooth shape, and reference numeral 3 is a tight frame 2 via a suspension 4. It is a folded-plate roof material that is mounted and fixed. The tight frame 2 is welded onto the base frame 1, and a hanging member 4 and an inverted L-shaped metal plate 5 are fastened to the standing wall portion of the tight frame 2 with bolts 6 and nuts 7. As shown in FIG. 4, the top wall 3 a including the joined portion of the folded plate roof material 3 is received by the upper wall 2 a continuous to the standing wall portion of the tight frame 2 and the upper wall 5 a of the metal 5.

  The folded plate roofing material 3 is made of a roll-formed product made of a steel plate having a cross section formed in an inverted trapezoidal shape, and is formed by projecting lateral mountain top walls 3a on both end portions thereof, and end portions of the mountain top walls 3a. To? A character-shaped outer joint wall (joint wall) 8 and an inner joint wall (joint wall) 9 are formed. By winding the joint walls 8 and 9 of the folded-plate roof material 3 around the suspension 4, the adjacent folded-plate roof materials 3 and 3 and the tight frame 2 can be integrated and supported through the suspension 4 so as not to be separated. . In FIG. 2, reference numeral 3 b is a valley bottom wall of the folded roof material 3, and reference numeral 3 c is an inclined wall connecting the mountain top wall 3 a and the valley bottom wall 3 b.

  As shown in FIG. 1 and FIG. 3, the hanging element 4 is integrally provided with a connecting portion 11 fixed to the tight frame 2 and a spring receiving portion 12 that is provided at the upper end of the connecting portion 11 and extends in the eaves-ridge direction. It consists of a stainless steel press fitting. The connecting portion 11 is formed of a vertical plate-shaped plate wall, and a fastening hole 13 for inserting the previous bolt 6 is formed at the center thereof. A horizontal receiving step portion 14 is formed at the proximal end of the helical receiving portion 12 on the connecting portion 11 side. Further, retaining claws 15 and 16 are formed by being cut downward and raised from the shell receiving portion 12 at two positions on the left and right sides of the shell receiving portion 12 and the left and right central portion of the screw receiving portion 12. As shown in FIG. 4, in a state where both the joining walls 8 and 9 are wound around the inside and outside of the hanging element 4, the previous receiving step portion 14 and the retaining claws 15 and 16 are attached to the folded plate roof material 3. The joint wall 17 of the outer joint wall 8 is received in cooperation.

  As shown by an imaginary line in FIG. 5, the folded roof material 3 when the wind pressure acts is curved like an outward bulge as shown by an imaginary line between the tight frames 2 adjacent in the eaves-ridge direction. In such a situation, in order to prevent the outer joint wall 8 of the folded-plate roofing material 3 from coming off from the suspension 4, the left and right half portions of the shell receiving portion 12 follow the folded-plate roofing material 3 and face upward. Can be elastically deformed. That is, the hanger 4 has a flexible structure, thereby preventing the splice joint structure from being broken.

  Specifically, as shown in FIG. 1, corner-shaped notches 20 are formed on both the left and right sides of the connecting portion 11, and the hanger 4 becomes closer to the left and right side ends of the screw receiving portion 12 from the left and right center portion of the hanger 4. The secondary moment of the section of the child 4 was gradually reduced, and the shell receiving portion 12 was made to follow the folded roof material 3 to be elastically deformable. Further, the left and right width L of the screw receiving portion 12 is set to be larger than the left and right width B of the connecting portion 11, and retaining claws 15 are formed at both left and right ends of the screw receiving portion 12 protruding on both sides of the connecting portion 11. The cross-section secondary moment in the vicinity of the retaining claws 15 at both the left and right ends was reduced. Further, the shape of the corner portion of the notch 20 is rounded so that the breaking strength at the corner portion of the connecting portion 11 is greater than the breaking strength of the fastening hole 13. In this embodiment, the lateral width L of the screw receiving portion 12 is 200 mm, the vertical dimension of the hanger 4 is 80 mm, and the thickness of the stainless steel plate material is 1.2 mm.

  In this embodiment, the shape of the entering corner is not simply rounded into a partial arc, but as shown in FIG. 1, the radius of curvature decreases as the shape of the notch 20 approaches the lower edge of the connecting portion 11, and the connecting portion The curved shape was set so that the radius of curvature became larger as it approached the left and right side edges. Thereby, the cross-sectional secondary moment of the hanging element 4 can be gradually changed from the central part toward the left and right sides, and the breaking strength at the entering corner part can be sufficiently secured.

  As shown in FIGS. 1 and 4, the lower ends of the retaining claws 15, 16 slightly protrude downward from the receiving step portion 14 by the dimension E. Therefore, when the joint wall 8 of the folded-plate roofing material 3 is subjected to wind pressure and elastically deforms into an outward bulging shape, the contact wall 17 first bites into the lower ends of the retaining claws 15 and 16, thereby The joint wall 8 can be restricted from sliding in the expanding direction. Therefore, it is possible to prevent the joining wall 8 of the outer folded plate roof material 3 from being elastically deformed in an expanded shape and coming off from the receiving step portion 14.

  Further, when the folded plate roof material 3 is curved outwardly, the retaining claws 15 at the left and right ends are elastically deformed following the elastic deformation of the outer joint wall 8 preceding the receiving step portion 14. In this way, first, the deformation force of the folded plate roofing material 3 is transmitted to the retaining claws 15 at both the left and right ends, so that a large elastic moment is applied to the suspension 4, and the hull receiving portion 12 and the connecting portion 11 are folded. The roof material 3 can be elastically deformed following the elastic deformation of the roof material 3. In this embodiment, the projection dimension E of the retaining claws 15 and 16 is set to allow a tolerance of ± 0.5 mm with 0.5 mm as a standard dimension.

  The entering corner shape of the notch 20 can be variously changed as shown in FIGS. 6 and 7, for example, but the difference in the entering corner shape affects the degree of elastic deformation of the shell receiving portion 12. Furthermore, regarding the breaking strength of the connecting portion 11, not only the difference in the shape of the entering corner, but also whether the entering corner portion is rounded or not is greatly affected. In order to verify the effect of the corner shape of the notch 20, test pieces shown in FIGS. 6 and 7 were formed, and a tensile test was performed on each test piece.

  Each test piece shown in FIG. 6 uses a stainless steel plate having a left-right width L of 200 mm, a vertical dimension of 80 mm, and a thickness of 1.2 mm. In each test piece, (1-A) is a partial arc having a large radius R when (1-B) is not provided with a notch 20 at the lower left and right corners, (1-B) is provided with a linear notch 20. The case where the notch 20 is formed is shown. In (1-D) to (1-H), the test piece was formed in a T shape, and the radius R of the corner of the cutout 20 was gradually reduced.

  The test results obtained are shown in the chart of FIG. The entering corner radius% in the chart is a percentage of the radius forming the entering corner portion when the value of half of the left and right width L of the hanging element 4 is 100%. Further, the deflection in the chart is indicated by a cross mark that cannot follow the elastic deformation of the folded-plate roof material 3, and a mark mark that can follow the elastic deformation of the folded-plate roof material 3 to some extent, and the elastic deformation of the folded-plate roof material 3 Items that can be followed well are marked with a circle.

  As is apparent from the chart of FIG. 6, the test pieces (1-A) and (1-B) cannot follow the elastic deformation of the folded plate roof material 3. In addition, the test pieces (1-G) and (1-H) are broken at the corners of the notches 20 before the maximum allowable load is applied, and the breaking strength of the connecting portion 11 cannot be satisfied. The remaining test pieces (1-C) to (1-F) were able to follow the elastic deformation of the folded roof material 3 and satisfy the breaking strength of the connecting portion 11. The percentage of the radius of the corner in the test pieces (1-C) to (1-F) was 20 to 250%.

  Each test piece shown in FIG. 7 uses a stainless steel plate having a left-right width L of 150 mm, a vertical dimension of 80 mm, and a thickness of 1.2 mm. In each test piece, (2-A) is a case where no notch 20 is provided in the left and right lower corners, (2-B) is a case where a straight notch 20 is provided, and (2-C) is a partial arc having a large radius R. The case where the notch 20 is formed is shown. In (2-D) to (2-H), the test piece was formed in a T shape, and the radius R of the corner of the cutout 20 was gradually reduced.

  The test results obtained are shown in the chart of FIG. The entering corner radius% in the chart is the percentage of the radius forming the entering corner when the value of half of the left-right width L is 100%. Further, the deflection in the chart is indicated by a cross mark that cannot follow the elastic deformation of the folded-plate roof material 3, and a mark mark that can follow the elastic deformation of the folded-plate roof material 3 to some extent, and the elastic deformation of the folded-plate roof material 3 Items that can be followed well are indicated by ○ and ◎.

  As apparent from the chart of FIG. 7, the test pieces of (2-A) and (2-B) cannot follow the elastic deformation of the folded plate roof material 3. Further, the test pieces (2-G) and (2-H) are broken at the corners of the notches 20 before the maximum allowable load is applied, and the breaking strength of the connecting portion 11 cannot be satisfied. The remaining test pieces (2-C) to (2-F) were able to follow the elastic deformation of the folded roof material 3 and satisfy the breaking strength of the connecting portion 11. The percentage of the radius of the corner in the test pieces (2-C) to (2-F) was 27 to 200%. From the test results of FIGS. 6 and 7, when the length of the left and right half portions of the flange receiving portion 12 is 100%, the radius value of the corner of the notch 20 includes a circular arc with a percentage of 20 to 250%. It can be said that it is preferable to form a curved line.

(Example 2) FIG. 8 and FIG. 9 shows Example 2 which applied the hanger type joint structure which concerns on this invention to the folded-plate roof of a double structure. In this case, the inner roof 30, the outer roof 31, and the heat insulating body 32 such as a glass wool mat disposed between the roofs 30 and 31 constitute a double-layer folded plate roof. Since the inner roof 30 constructs a folded-plate roof in the same manner as in the first embodiment, the description thereof is omitted and only main symbols are given.

  The outer roof 31 is basically configured in the same manner as the inner roof 30, but the outer roof 31 is suspended by a suspension base (suspender support) 2 fixed to a connecting portion (shell joint portion) C of the inner roof 30. The point which supports the child 4 is different from the inner roof 30. The hanging base 2 is composed of a pair of left and right leg pieces 34 that sandwich the previous connecting portion C, and a plastic hanging holder 35 that is sandwiched and fixed to the upper part of the leg piece 34. An Ω-shaped engaging portion 36 that sandwiches the constricted portion of the connecting portion C is formed at the lower part of the pair of leg pieces 34 made of a press fitting, and a hanging element holder 35 is provided above the pair of leg pieces 34. A U-shaped fastening portion 37 is formed to be sandwiched. The suspension holder 35 has a T-shaped cross section, and a receiving wall 35a for receiving the mountain top wall 3a on the outer roof 31 side protrudes on both sides of the upper end. The hanging part 2 is loaded in a slit 38 whose connecting part 11 is provided in the central part of the hanging part holder 35.

  The hanging platform 2 is fastened to the connecting portion C of the lower roof 30 as shown in FIG. Specifically, the engaging portion 36 of the leg piece 34 is engaged with the constricted portion of the connecting portion C, and the both leg pieces 34 are fastened by the bolt 40 and the nut 41. Further, the suspension holder 35 is loaded in the fastening portion 37 together with the suspension 4, and these three members 37, 35, 4 are fastened and fixed by a bolt 42 crossing the fastening portion 37 and a nut 43 screwed into the bolt 42. . The adjacent folded-plate roof materials 3 and 3 are suspended from the hanging element 4 by tightening the joint walls 8 and 9 of the folded-sheet roofing material 3 constituting the outer roof 31 with respect to the hanging element 4 in this state. It can be integrated with the lower roof 30 through the child stand 2 so as not to be separated.

(Example 3) FIG. 10 and FIG. 11 are Example 3 which applied the hanger-type screw joint structure based on this invention to the double-folded folded-plate roof like Example 2, The structure of the child stand (hanger support) 2 is different. The hanging base 2 includes a pair of left and right leg pieces 34 that sandwich the connecting portion C of the inner roof 30, a plastic guide block 45 that is sandwiched and fixed to the upper part of the leg piece 34, and the guide block 45 toward the eaves. It is composed of a pair of left and right suspension holders 46 that are slidably supported. The leg piece 34 and the suspension holder 46 are made of a press fitting.

  At the lower part of the pair of leg pieces 34, an Ω-shaped engaging portion 36 that sandwiches the constricted portion of the connecting portion C is formed. The guide block 45 has a T-shaped cross section formed by a guide portion 47 and a leg portion 48 protruding from the center of the lower surface of the guide portion 47, and the leg portion 48 is sandwiched between a pair of leg pieces 34. In this state, it is integrated with the leg piece 34 by fastening and fixing with the bolt 40 and the nut 41. At the bottom of the suspension holder 46, there is a horizontal C-shaped slide portion 49 that is guided and supported by the previous guide portion 47. A receiving wall 46a for receiving the wall 3a is overhanging. By engaging the slide portion 49 with the guide portion 47 and fastening the left and right suspension holders 46 with bolts 42 and nuts 43, the suspension 4 is fixed to the suspension base 2. The adjacent folded-plate roof materials 3 and 3 are suspended from the hanging element 4 by tightening the joint walls 8 and 9 of the folded-sheet roofing material 3 constituting the outer roof 31 with respect to the hanging element 4 in this state. It can be integrated with the lower roof 30 through the child stand 2 so as not to be separated. As described in the second and third embodiments, the hanger type joint structure according to the present invention is applied to the outer roof 31 of the double-layer folded-plate roof, and is similar to the folded-plate roof of the first embodiment. In addition, it is possible to eliminate the breakage of the welded joint structure due to wind pressure.

  In the above embodiment, the corner shape of the notch 20 is formed by continuously forming a plurality of curved lines having different curvature radii. However, as illustrated in FIGS. 6 and 7, the corner shape is a partial shape. It can be formed by an arc. The retaining claws 15 may be formed at least at both the left and right ends of the flange receiving portion 12, but if necessary, the retaining claws 16 may be provided at three or more locations between the left and right retaining claws 15 and 15. Can do. The retaining claws 15 and 16 can be formed using the wall surface of the receiving step portion 14. Further, the rib-shaped retaining claws 15 and 16 can be formed by punching the corners of the shell receiving portion 12 and the receiving stepped portion 14 downward.

  The left-right width B of the connecting portion 11 can be made the same as the left-right width L of the flange receiving portion 12. The structure of the tight frame 2 is not limited to the structure described in the embodiment. The folded roof material 3 may have a structure in which a plurality of peak portions and valley portions are continuous. In the double structure folded-plate roof, it is preferable to apply the hanging element 4 according to the present invention to both the inner roof 30 and the outer roof 31, but to at least one of the inner roof 30 and the outer roof 31. It may be.

2 Hanging support (tight frame, hanging stand)
3 Folded plate roofing material 4 Hanging element 8 Outer joint wall 9 Inner joint wall 11 Connecting part 12 Fleece receiving part 14 Receiving step part 15 Stopping claw 17 Contacting wall 20 Notch

Claims (7)

Adjacent folded-plate roofing material (3) is a hanger-type screw joint structure that is connected and fixed via a hanger (4) fixed to a hanger support (2),
The hanger (4) includes a connecting portion (11) fixed to the hanger support (2), and a spring receiving portion (12) provided at the upper end of the connecting portion (11) and extending in the eaves-ridge direction. Has
A receiving step (14) and a retaining step for jointly receiving the joint wall (8) of the outer folded plate roofing material (3) at the base end on the connecting portion (11) side of the spring receiving portion (12) Nails (15) are provided,
A corner-shaped notch (20) that promotes elastic deformation of the hanger (4) is formed on both the left and right sides of the connecting portion (11),
A hanging-type screw joint structure in which a corner portion of the notch (20) is rounded into a curved line. When the length of the left and right half of the screw receiving portion (12) is 100%,
The hanging-type helical joint structure according to claim 1, wherein the corners of the notches (20) are formed in a curved line shape including an arc having a radius value of 20 to 250%. The left and right width (L) of the screw receiving portion (12) is set larger than the left and right width (B) of the connecting portion (11),
The suspension-type screw joint structure according to claim 2, wherein the retaining claws (15) are formed at both left and right ends of the screw receiving portion (12) protruding on both sides of the connecting portion (11).   The curved corner of the notch (20) is formed by a curved line having a smaller radius of curvature as it approaches the lower edge of the connecting portion (11) and a radius of curvature that increases as it approaches the left and right edges of the connecting portion (11). The hanging-type screw joint structure according to 2 or 3.   The hanger-type screw joint structure according to claim 2, 3 or 4, wherein a lower end of the retaining claw (15) projects slightly downward from the receiving step (14).   6. The retaining claws (15, 16) are formed at the left and right ends of the shell receiving portion (12) and at a plurality of locations at the center of the shell receiving portion (12). The hanger type screw joint structure. The hanger (4) is fastened and fixed to the hanger support (2) with a bolt (6) through a fastening hole (13) passed through the connecting portion (11).
The hanging-type helical joint structure according to any one of claims 1 to 6, wherein a breaking strength at a corner portion of the notch (20) is set to be larger than a breaking strength of the fastening hole (13).

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