JP6254784B2 - Connected structure - Google Patents

Description

  The present invention relates to an elongated member that can be connected by using a connecting member.

  In some cases, a plurality of elongate members are connected to each other in the axial direction to form long pillars or crosspieces. For example, as shown in FIGS. 7A to 7C, when two hollow elongated members 710 and 730 having a predetermined length are connected, one end portion 720a of the connecting member 720 is connected to the elongated member 710. After being inserted into the mouth 710a, the other end 720b of the connecting member 720 is inserted into the joint 730a of the elongated member 730, and a longer member 750 is assembled.

  A specific example of such an elongated member is a crosspiece used in a fixing device that fixes a solar cell module to a roof. In the fixing device, in order to fix a plurality of solar cell modules side by side, a crosspiece having a predetermined length is connected to form a longer crosspiece. In Patent Document 1, when the length of the vertical beam is insufficient in the solar cell module mounting structure, a connecting pipe is inserted into the space in the vertical beam, and the other vertical beam is inserted into the connecting pipe. It is shown that the vertical bars are connected.

When a solar cell module is installed on the roof using a fixing device, the crosspiece of the fixing device has not only a load in the direction of gravity (positive load) by the solar cell module but also a lift force that the solar cell module can lift by the wind In the following description, a positive load and a load weight may be simply referred to as a load). The crosspiece used for fixing the solar cell module is required to have a prescribed strength (for example, 2400 Pa / m ² or more) with respect to a positive load and a load weight. However, the portion where the crosspieces are joined has a lower strength than the crosspiece, and the portion where the crosspieces are joined may be plastically deformed due to a positive load or load weight.

  The main causes of plastic deformation are as follows. FIG. 8A is a cross-sectional view taken along the line AA in FIG. 7C and shows a state where the connecting member 720 is inserted into the elongated member 710. The connecting member 720 is supported by the first wall 711, the second wall 712a, and the third wall 712b of the elongate member 710 and facilitates insertion of the connecting member 720 into the elongate member 710. There is a gap between the inner surface of the fourth wall 713 of 710 and the upper surface of the connecting member 720. FIG. 8B is a cross-sectional view taken along the line BB in FIG. 8A, and the portion of the elongated members 710 and 730 connected to the load in the direction of arrow G is bent. Indicates the state.

  When the elongated members 710 and 730 are connected by the connecting member 720 and the load weight is applied in the direction of the arrow G in the figure, there is a gap between the upper surface of the connecting member 720 and the elongated members 710 and 730. The end portions 720a, 720b and the elongated members 710, 730 come into contact with each other at the contacts 710c, 730c, and an upward load is applied to the contacts 710c, 730c. On the other hand, the joints of the elongated members 710 and 730 come into contact with the central portion of the connecting member 720, and a downward load is applied to the contacts 710b and 730b. Normally, the contact 710c and the contact 710b are applied with the same load in the opposite directions, and the contact 730c and the contact 730b are applied with the same load in the opposite directions. However, as shown in FIG. 8B, when the elongated member 710 and the connecting member 720 come into contact with each other at the contact 710b for some reason, but the elongated member 730 and the connecting member 720 do not come into contact with each other at the contact 730b, the contact 710c, In some cases, the elongated member 710 receives the load on the connecting member 720 received from 730c in a concentrated manner at the contact point 710b. In this case, since a load larger than the assumed load is applied to the contact point 710b, plastic deformation occurs. The state of plastic deformation is shown in FIG. 8C, which is a cross-sectional view taken along the line CC of FIG. As shown in the drawing, in the contact 710b, a load is applied in the direction E in the figure, and the contact 710b may be deformed and damaged in the direction F in the figure. In order to prevent such damage to the contacts 710b, simply increasing the thickness of the first wall of the elongated members 710, 730 increases the strength, but increases the amount of material used, and the elongated members 710, 730 As the weight increases, so does the cost.

JP 2003-343058 A

  In an elongated member that is connected using a connecting member, an elongated member that suppresses breakage of the joined portions is required.

The present invention includes a connecting member and an elongate member into which the connecting member is inserted, and an elongate member capable of connecting another elongate member via the connecting member in the axial direction of the elongate member , wherein the elongated member has a first wall extending along said axial direction, said first second walls from both sides of the wall extending in a direction perpendicular to the first wall and the third wall, The first wall has a pair of protrusions forming a continuous groove therebetween, and one of the pair of protrusions is integrated with the second wall, and the other is the When the connecting member is inserted into the elongated member, the connecting member is integrated with at least one inner surface of the second wall and the third wall; and is supported lifting in the surface of each protrusion walls between adjacent inner surface of said third wall, not located in the groove, the first wall Not lifting, provides a coupling structure.

The present invention, first have a fourth wall that connects with the second wall and the third wall opposite the wall, the second wall, the third wall, the fourth The connection structure is provided in which a hollow portion into which the connection member is inserted is formed by a wall and the pair of protrusions .

The present invention, the first wall, to any one of the second wall and the third wall, the Ru elongated slit in the axial direction of the member is formed Tei, provides the coupling structure To do.

The present invention, in the fourth wall, the Ru elongated slit in the axial direction of the member is formed Tei, providing the connection structure.

According to the elongated member of the connection structure of the present invention, the first wall has a pair of protrusions, one of which is integrated with the second wall and the other of which is integrated with the third wall, The connecting portion is supported by the inner surface of at least one of the wall and the third wall and the surfaces of the protrusions adjacent to the inner surfaces of the second wall and the third wall. The first wall formed with the pair of protrusions is increased in thickness at the portion where the protrusions are formed, and the protrusions are integrated with the second wall and the third wall. The strength is increased with respect to the load, and the load can be resisted. Therefore, it is possible to suppress damage at the portion where the elongated members are joined together. In addition, since a groove that does not contact the connecting member is formed between the pair of protrusions, the amount of material used is reduced and the weight is reduced as compared with the case where the overall thickness of the first wall is increased. This can reduce the cost.

It is a perspective view which shows the elongate member by the embodiment of this invention, and the inserted connection member. It is sectional drawing along the II-II line | wire of FIG. 1 which shows the elongate member by the embodiment of this invention, and the inserted connection member. It is sectional drawing which shows another example of the elongate member by embodiment of this invention. It is sectional drawing which shows another example of a connection member. It is sectional drawing which shows the other example of the elongate member by embodiment of this invention. 6A and 6B are diagrams showing a connecting member, in which FIG. 6A is a front view, FIG. 6B is a plan view, and FIG. 6C is a side view. It is a perspective view which shows two hollow elongate members connected using a connection member. FIG. 8A is a cross-sectional view of a conventional elongated member into which a connecting member is inserted, and FIG. 8B is a cross-sectional view taken along line BB in FIG. FIG. 8C is a cross-sectional view of the elongated member taken along the line CC in FIG. 8B, and shows a state where the elongated member is damaged. .

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, the same or similar components are denoted by common reference numerals, and the scale of these drawings is appropriately changed for easy understanding. In addition, it should be noted that the technical scope of the present invention is not limited to these embodiments, but extends to the invention described in the claims and equivalents thereof.

  The elongated member of this embodiment will be described. The elongate member 10 of this embodiment can form a long pillar, a beam, a crosspiece, etc. by mutually connecting in the axial direction (arrow A direction of FIG. 1), and connecting each other in each axial direction. It is a member. The elongate member 10 is a member having a mouth portion 10a at both end portions or one end portion thereof and a hollow portion 18 into which the connecting member 20 can be inserted from the joint portion 10a. The elongated member 10 has one end 20a of the connecting member 20 inserted into the hollow portion 18, and the other end 20b of the connecting member 20 is inserted into a hollow portion (not shown) of another elongated member to be connected. The elongated members can be connected to each other in the axial direction.

  When a structure such as a solar cell module is installed on the elongate member 10 with the elongate member 10 facing sideways, a load (positive load) in the direction of gravity (the arrow B1 direction in the figure) is applied to the elongate member 10. On the other hand, for example, under the influence of wind, the structure may be lifted and a load (load weight) in the direction opposite to the direction of gravity (in the direction of arrow B2 in the figure) may be applied. Therefore, it is assumed that the elongated member 10 of the present embodiment resists not only a positive load but also a load weight.

  As shown in FIGS. 1 and 2, the elongated member 10 includes a first wall 11 extending along the axial direction A with respect to the load weight direction (B 2), and both sides of the first wall 11. A second wall 12a extending in a direction perpendicular to the first wall 11 and a third wall 12b are provided. Further, a fourth wall 13 is provided on the opposite side of the first wall 11 through the hollow portion 18. The elongated member 10 includes a pair of protrusions (a first protrusion 14a and a second protrusion 14b) on the first wall 11, and a groove is formed between the pair of protrusions. The first protrusion 14a is integrated with the second wall 12a, and the second protrusion 14b is integrated with the third wall 12b. In the elongated member 10, the surface 15a adjacent to the inner surface of the second wall 12a of the first protrusion 14a and the part of the bottom surface of the connecting member 20 (first contact portion 21a) are in direct contact. Thus, the surface 15b of the second protrusion 14b adjacent to the inner surface of the third wall 12b and a part of the bottom surface of the coupling member 20 (second contact portion 21b) are in direct contact. A groove 16 that does not contact the connecting member 20 is formed between the first protrusion 14a and the second protrusion 14b by the first wall 11, the first protrusion 14a, and the second protrusion 14b. The In the portion where the first protrusion 14a and the second protrusion 14b are present, the thickness of the first wall 11 is substantially increased. Further, the first protrusion 14a is integrated with the second wall 12a, and the second protrusion 14b is integrated with the third wall 12b to increase the strength. In the illustrated embodiment, the connecting member 20 is supported in contact with the inner surfaces of the second wall and the third wall. Therefore, the elongated member 10 can resist the load received from the connecting member 20, and can be prevented from being damaged.

  The groove 16 is a portion away from the second wall 12a and the third wall 12b, and is a portion that is weak against load. In the elongated member 10 of the illustrated embodiment, by providing the groove 16 that is a non-contact portion that does not receive a load directly from the connecting member 20, damage due to the groove 16 receiving a load from the connecting member 20 is prevented. Further, by providing the groove 16, it is possible to suppress the amount of material used and to reduce the weight of the elongated member 10 as compared with the case where the first wall 11 is made thick as a whole.

  The sizes of the widths D3 and D4 of the surfaces 15a and 15b where the first protrusion 14a contacts the connecting member 20 are arbitrary, but are equal to or more than twice the thickness of the wall constituting the connecting member 20. Is preferred.

  The connecting member 20 inserted into the hollow portion 18 in the illustrated embodiment is a member having an elongated rectangular tube shape. The connecting member 20 has a width D2 that is approximately the same size as the width D1 of the hollow portion 18 of the elongated member 10. The connecting member 20 has a height H2 slightly smaller than the height H1 from the surface of the first protrusion 14a and the second protrusion 14b to the inner surface of the fourth wall 13, and the connecting member 20 is used as the elongated member 10. When inserted, a gap 17 is formed between the upper surface of the connecting member 20 and the fourth wall 13 as shown in FIG. The size (gap amount) H3 of the gap 17 is arbitrary, the height H2 of the connecting member 20 is formed to be approximately the same as the height H1 of the hollow portion 18, and the size H3 of the gap 17 is made zero. May be. The length of the connecting member 20 is arbitrary, but from the viewpoint of weight and cost, it is preferable to form the connecting member 20 with a width D2 of not less than 2 times and not more than 5 times.

  FIG. 3A to FIG. 3D show cross sections of other examples of the elongated member 10. The elongated member 10 shown in FIGS. 1 and 2 is a cylindrical member, but a slit 217a along the axial direction A is formed in the fourth wall 213a like the elongated member 210a shown in FIG. May be. In this case, the elongated member 210a has a U-shaped cross-sectional shape. Moreover, you may form the slit 217b along the axial direction A in the 1st wall 211b like the elongate member 210b shown in FIG.3 (b). In this case, the elongated member 210b has an inverted U-shaped cross-sectional shape. As in the elongated member 210c shown in FIG. 3C, a slit 217c along the axial direction A may be formed on one of the second wall 212a and the third wall 212b. In this case, the elongated member 210c has a C-shaped cross-sectional shape. By forming slits on each surface, the amount of material used can be reduced, the weight of the elongated member can be reduced, and the cost can be reduced.

  The elongated member 10 shown in FIGS. 1 and 2 is provided with a pair of protrusions (a first protrusion 14a and a second protrusion 14b) on the first wall 11 so as to resist the load weight that the elongated member 10 receives. As shown in FIG. 3 (d), the connection portion between the fourth wall 213d and the second wall 212a and the third wall 212b can be used to withstand positive loads. Furthermore, a pair of protrusions (third protrusion 214c and fourth protrusion 214d) that contact the connecting member 220 may be provided.

  Another example of the connecting member 20 is shown in FIGS. 4 (a) to 4 (g). The connecting member 20 only needs to include a first contact portion 21a that contacts the surface 15a of the first protrusion 14a and a second contact portion 21b that contacts the surface 15a of the second protrusion 14b. As shown in FIG. 4A, the connecting member 120a may have a U-shaped cross-sectional shape. Like the connection member 120b shown in FIG.4 (b), you may have a C-shaped cross-sectional shape. Like the connection member 120c shown in FIG.4 (c), you may have an L-shaped cross-sectional shape. A slit may be formed in part, as in the connecting member 120d shown in FIG. Like the connection member 120e shown in FIG.4 (e), you may have an inverted T-shaped cross-sectional shape. A triangular tube may be sufficient as a cross section like the connection member 120f shown in FIG.4 (f). Like the connection member 120g shown in FIG.4 (g), you may have an H-shaped cross-sectional shape.

  FIG. 5 shows another embodiment of the elongated member. The elongated member 310 shown in the figure is a crosspiece used for a fixing device that fixes the solar cell module to the installation surface of the roof. Similar to the elongated member 10 shown in FIGS. 1 and 2, it has a hollow portion 318 into which the connecting member 320 can be inserted, and a plurality of connecting members 320 are inserted into the hollow portion 318 and attached to each other in the axial direction. Configured to be connected to each other. In addition, the elongated member 310 includes holding portions 361 and 362 that hold end portions (not shown) of solar cell modules adjacent to each other at the upper end portion. The elongate member 310 may be lifted by the wind due to the wind and may be loaded in the upward direction (arrow G direction) in the figure.

  The elongated member 310 includes a first wall 311 extending along the axial direction thereof, and a second wall 312a and a third wall 312b extending in the vertical direction from both side portions of the first wall 311. The first wall 311 has a pair of protrusions (a first protrusion 314a and a second protrusion 314b), and a groove 316 is formed between the pair of protrusions. Further, the elongated member 310 includes a fourth wall 313 on the opposite side of the first wall 311 through the hollow portion 318. The first protrusion 314a is integrated with the second wall 312a, and the second protrusion 314b is integrated with the third wall 312b. The surface 315a of the first protrusion 314a adjacent to the inner surface of the second wall 312a, the surface 315b of the second protrusion 314b adjacent to the inner surface of the third wall 312b, and the second wall 312a The connecting member 320 is supported by the inner surface.

  The elongated member 310 has a flange portion 364a extending outward from a joint portion between the first wall 311 and the second wall 312a, and the first wall 311 so that the elongated member 310 can be fixed to the installation surface of the structure or another crosspiece. A flange portion 364b extending outward from the joint portion of the third wall 312b is provided. The elongated member 310 is fixed to the installation surface or another crosspiece (not shown) by passing a bolt through the flange portions 364a and 364b or hooking a metal fitting.

  The elongated member 310 of the illustrated embodiment is connected to the adjacent elongated member by the connecting member 320. As shown in FIGS. 5 and 6B, the connecting member 320 has a C-shaped cross section, and is a bottom surface portion that contacts the first protrusion 314a and the second protrusion 314b of the elongated member 310. 321, an upper surface portion 322 that contacts the fourth wall 313 of the elongated member 310, and a side wall portion 323 that extends from one side of the bottom surface portion 321 in a substantially vertical direction and is connected to the upper surface portion 322. Two bolt holes 324 a and 324 b are formed in the side wall portion 323. As shown in FIG. 5, when the connecting member 320 is inserted into the elongated member 310, the bolt hole 319 formed in the second wall 312 a of the elongated member 310 and the bolt hole 324 a are aligned, and the bolt 360 is used. Thus, the connecting member 320 is fixed to the elongated member 310. The bolt hole 324 b of the connecting member 320 is used to fix the elongated member connected to the elongated member 310 and the connecting member 320.

  The elongated member according to the present embodiment has been described above with reference to the drawings. The elongated member according to the present invention has a pair of protrusions, one of which is integrated with the second wall and the other of which is integrated with the third wall, on the first surface, and the second wall and the third wall. The connecting portion is supported by at least one of the inner surfaces and the surfaces of the protrusions adjacent to the inner surfaces of the second wall and the third wall. The first wall formed with the pair of protrusions has an increased thickness, and the protrusions are integrated with the second wall and the third wall. On the other hand, the strength is increased and the load can be resisted. In addition, since a groove is formed between the pair of protrusions, the amount of material used can be reduced and the weight can be reduced as compared with the case where the overall thickness of the first wall is increased. Can be lowered.

10, 210a to 210d, 310 Elongated member 11, 311 First wall 12a, 312a Second wall 12b, 312b Third wall 13, 313 Fourth wall 14a, 314a First protrusion 14b, 314b Second Protrusion part 16, 316 Groove 18, 318 Hollow part 20, 320 Connecting member

Claims (4)

A connecting member;
A elongate member to which the connecting member is inserted, and an elongated member capable of connecting another elongated member through said connecting member in the axial direction of the elongate member,
Have
The elongated member is
A first wall extending along the axial direction;
A second wall and a third wall extending from both sides of the first wall in a direction perpendicular to the first wall;
The first wall has a pair of protrusions forming a continuous groove between the two, one of the pair of protrusions is integrated with the second wall, and the other is formed with the third wall. Integrated,
When the connecting member is inserted into the elongated member, the connecting member includes at least one inner surface of the second wall and the third wall, and an inner surface of the second wall and the third wall. is supported lifting in the surface of the projections adjacent to, not located in the groove, not supported by the first wall, connecting structure. The fourth wall connected to the second wall and the third wall is perforated opposite the first wall,
The connection structure according to claim 1 , wherein a hollow portion into which the connection member is inserted is formed by the second wall, the third wall, the fourth wall, and the pair of protrusions . Said first wall, into any one of said second wall and said third wall, said Ru elongated are slits formed in the axial direction of the member Tei, according to claim 1 or 2 Connected structure . Wherein the fourth wall, Ru said is slit in the axial direction of the elongated member is formed Tei connection structure according to claim 2.

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