JP2013096059A - Fixing structure of frame material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure of a frame material which can resist a large negative pressure.SOLUTION: The fixing structure of the frame material includes: a storage groove 11 in which a head of a bolt B formed in one frame material (a rafter 10) is accommodated; a first reinforcing member 50 which is accommodated inside the storage groove 11 and penetrated by a shaft of the bolt B; a second reinforcing member 60 which is located outside the storage groove 11 and penetrated by the shaft of the bolt B; and a bolt through-hole which is formed in a locking plate piece (a lower flange part 32a) of the other frame material (a horizontal joist 30) and penetrated by the shaft of the bolt B. A pair of locking parts 12, 12 which respectively extend from groove side walls on both sides to the inside are formed in the storage groove 11. The first reinforcing member 50 is pinched between the head of the bolt B and the locking part 12. The second reinforcing member 60 is pinched by the locking plate piece and a nut N. The locking part 12 and the locking plate piece are held by the first reinforcing member 50 and the second reinforcing member 60.

Description

  The present invention relates to a frame material fixing structure that fixes ram materials used for a solar panel mount for supporting a solar panel, using bolts and nuts.

  Conventionally, a solar panel mount for fixing a solar panel (solar cell panel, solar water heater, etc.) is generally a frame material assembled in a lattice shape. As a fixing structure between the frame members, there is a structure as shown in Patent Document 1. In this fixing structure, when the frame members are fixed to each other, a fixing bracket is fixed to one frame member, and the other frame member is fixed to the fixing bracket. One frame member has a groove formed with a pair of locking portions extending inwardly from the groove sidewalls on both sides, and a fixing bracket is accommodated in the groove so as to be inside the locking portion. Abutted and locked.

JP 2003-35016 A

  In the fixing structure, the bonding strength was secured with respect to the load of the frame material, but the pressure (negative pressure) against the stress in the direction in which the upper frame material is pulled upward (the direction in which the frame materials are separated) However, it could not be said that it has sufficient bonding strength. That is, when a large negative pressure is generated, there is a possibility that the fixing bracket is pulled outward, the locking portion is rolled up and separated from the frame material. In particular, in the solar panel mount, since a large stress is generated to lift the solar panel by wind pressure in a strong wind or the like, it is necessary to be able to withstand negative pressure.

  From such a viewpoint, an object of the present invention is to provide a frame material fixing structure that can withstand a large negative pressure.

  The invention according to claim 1 for solving such a problem is a structure in which frame members are fixed to each other using bolts and nuts, and is formed on one of the frame members and accommodates a head portion of the bolt. A receiving groove, a first reinforcing member that is housed in the housing groove and through which the shaft portion of the bolt penetrates, and a second reinforcing member that is located outside the housing groove and through which the shaft portion of the bolt penetrates A bolt through-hole formed in the other locking plate piece of the frame material and through which the shaft portion of the bolt passes, and the housing groove has a pair of engagements extending inward from the groove side walls on both sides. A stopper is formed, the first reinforcing member is sandwiched between the head of the bolt and the locking portion, and the second reinforcing member is between the locking plate piece and the nut. Sandwiched between the first reinforcing member and the second reinforcing member In a fixed structure of the frame member, characterized by pinching the locking portion and the locking plate pieces.

  When the frame material is pulled away by the negative pressure, a tensile force acts on the bolt. The first reinforcing member is supported by the head of the bolt, but since the contact area of the first reinforcing member to the locking portion is large, the surface pressure applied to the locking portion can be reduced, and a large negative pressure can be obtained. Can also withstand. Furthermore, a deformation | transformation of a frame material (locking part) can be suppressed by clamping a locking part and a locking plate piece with a 1st reinforcement member and a 2nd reinforcement member.

  The invention according to claim 2 is characterized in that the first reinforcing member has a width dimension equivalent to the width of the receiving groove.

  According to such a configuration, since the contact area of the first reinforcing member to the locking portion can be maximized, it is possible to withstand a larger negative pressure.

  The invention according to claim 3 is characterized in that the first reinforcing member has a recess opening toward the bottom of the receiving groove, and the head of the bolt is located in the recess.

  According to such a configuration, it is possible to efficiently increase the cross-sectional rigidity (secondary moment of cross-section) strength while reducing the weight of the first reinforcing member. Furthermore, the space of the recess can be used effectively.

  The invention according to claim 4 is characterized in that the first reinforcing member has a height dimension equivalent to the depth of the receiving groove.

  According to such a configuration, the cross-sectional rigidity of the first reinforcing member can be increased.

  The invention according to claim 5 is characterized in that the first reinforcing member is configured to pass through a plurality of bolts adjacent to each other along the longitudinal direction of the groove in the accommodation groove.

  According to such a configuration, the contact area of the first reinforcing member into the housing groove can be further increased, and the frictional force between the first reinforcing member and the housing groove inner surface can be increased. The slip of the first reinforcing member and the bolt and nut can be suppressed. Furthermore, since a plurality of adjacent bolts can be fixed with one first reinforcing member, the labor for construction is reduced.

  The invention according to claim 6 is characterized in that the second reinforcing member has a concave portion that opens toward a tip end side of the shaft portion of the bolt, and the nut is located in the concave portion.

  According to such a configuration, it is possible to efficiently increase the cross-sectional rigidity while reducing the weight of the second reinforcing member. Furthermore, the space of the recess can be used effectively.

  The invention according to claim 7 is characterized in that the locking portion is provided with a positioning screw that comes into contact with an end face of the first reinforcing member in the longitudinal direction of the groove.

  According to such a configuration, the first reinforcing member can be easily positioned and the slip of the first reinforcing member in the groove longitudinal direction can be suppressed.

  The invention according to claim 8 is a structure in which the frame members are fixed to each other by using bolts and nuts, and is formed in one of the frame members and accommodates the head of the bolt, and the accommodation groove And a bolt through-hole formed in the other frame material and through which the shaft portion of the bolt penetrates. A pair of locking portions extending inward from the groove sidewalls, and the reinforcing member being sandwiched between the bolt head and the locking portion. This is a material fixing structure.

  When the frame material is pulled away by the negative pressure, a tensile force acts on the bolt. Although the reinforcing member is supported by the head of the bolt, the contact area of the reinforcing member to the locking part is large, so the surface pressure applied to the locking part can be reduced and it can withstand a large negative pressure. Can do.

  The invention according to claim 9 is characterized in that the frame material constitutes a solar panel mount for supporting the solar panel.

  According to such a configuration, even when the wind pressure acts in the direction in which the solar panel is lifted and the stress acts in the direction in which the frame members are separated (negative pressure acts), the negative pressure is increased. It is possible to provide a solar panel mount that can withstand.

  The frame material fixing structure according to the present invention can withstand a large negative pressure.

It is the perspective view which showed the solar panel mount. It is the side view which showed the solar panel mount. It is the S line arrow directional view of FIG. 2 which showed the state which installed the solar panel in the solar panel mount frame. It is sectional drawing which showed the fixing structure of the frame material which concerns on this embodiment. It is the partially broken side view which showed the fixation structure of the frame material which concerns on this embodiment. It is the figure which showed the 1st reinforcement member, Comprising: (a) is the perspective view seen from diagonally upper side, (b) is the perspective view seen from diagonally lower side.

  As shown in FIG. 1, the solar panel mount 1 includes a pair of rafters 10 and 10 extending in the vertical direction, and a plurality (five in this embodiment) of horizontal joists 30 and 30 orthogonal to the rafter 10. … And. Each rafter 10 is supported by two struts 40, 40, respectively. The column 40 and the rafter 10 are supported by a base 41. In the present embodiment, when the solar panel mount 1 is viewed from the front, the front-rear direction is the vertical direction, and the left-right direction is the horizontal direction. A brace 45 is provided between the support column 40 that supports the upper portion of one rafter 10 and the support column 40 that supports the upper portion of the other rafter 10. The support column 40 has the same cross-sectional shape as the rafter 10 and is made of an extruded shape made of an aluminum alloy. The brace 45 is composed of a plate material (flat bar), and the two braces 45, 45 are arranged so as to intersect between the columns 40, 40.

  As shown in FIG. 2, the pair of rafters 10 and 10 are arranged in parallel to each other with a space therebetween. In addition, the pair of rafters 10 and 10 are respectively arranged at left and right symmetrical positions around the middle portion in the longitudinal direction of the horizontal joists 30. Each rafter 10 is arranged to be inclined with respect to the vertical direction (horizontal direction), and the front is low and the rear is high when viewed from the front. Yokoneta 30 is bridged over the rafters 10 and 10. Both ends of the side joist 30 project outward from the pair of rafters 10 and 10 respectively. The rafter 10 is arranged along the inclination direction of the solar panel 2 (see FIG. 3), and the inclination angle of the rafter 10 matches the inclination angle of the solar panel 2.

  As shown in FIG. 3, a plurality of solar panels 2 are installed on the solar panel mount 1. In the present embodiment, four solar panels 2 are arranged in the vertical direction and three in the horizontal direction, and a total of 12 solar panels 2 are placed on the solar panel mount 1. The solar panel 2 is supported at its upper and lower ends by horizontal joists 30 and 30 located at the upper and lower sides of the solar panel 2. The number of solar panels 2 and the number of side joists 30 are examples, and are not limited to the configuration of the present embodiment. In the solar panel gantry 1 configured as described above, wind is also applied from the back surface of the solar panel 2, so that the wind pressure is applied in the direction in which the solar panel 2 is lifted, that is, in the direction in which the horizontal joists 30 are separated from the rafters 10. There is a case.

  As shown in FIGS. 4 and 5, the frame material fixing structure according to the present embodiment includes a solar panel mount 1 (see FIGS. 1 to 3) for supporting the solar panel 2 (see FIG. 3). This is a structure in which the frame members are fixed using bolts B and nuts N. The frame material fixing structure is used to fix the rafter 10 and the horizontal joists 30.

  The rafter 10 is made of an extruded shape made of an aluminum alloy. As shown in FIG. 4, the rafter 10 has a rectangular cross section. In the upper part of the rafter 10, an accommodation groove 11 for accommodating the head of the bolt B for fixing the rafter 10 and the horizontal joist 30 is formed.

  The side joist 30 is made of an extruded shape made of an aluminum alloy. As shown in FIG. 1 and FIG. 2, the horizontal joists 30 are arranged between the end horizontal joists 30a (see FIG. 2) arranged at the upper and lower ends of the rafter 10, and the upper and lower end horizontal joists 30a, 30a. The inner side joist 30b (see FIG. 2).

  As shown in FIG. 5, the inner side joist 30 b includes a web portion 31 and flange portions 32, 32... Extending from the upper and lower sides of the web portion 31 to both sides, and has an H-shaped cross section. Yes. The upper flange portions 32, 32 (upper flange portions 32b, 32b) are provided to extend in both directions (both sides in the thickness direction of the web portion 31) from the upper end of the web portion 31, respectively. The lower flange portions 32 and 32 (lower flange portions 32a and 32a) are provided to extend from the lower end of the web portion 31 in both directions (both sides in the thickness direction of the web portion 31). The web portion 31 is hollow with a rectangular cross section. A bolt through hole (not shown) is formed in the lower flange portion 32a.

  As shown in FIG. 2, the end horizontal joist 30 a includes a web portion 31, flange portions 32 and 32 (lower flange portions 32 a and 32 a) extending from the bottom of the web portion 31 to both sides, and an upper end of the web portion 31. And a flange portion 32 (upper flange portion 32b) extending to one side. That is, the end side joist 30a has a shape obtained by removing one upper flange portion 32b from the inner side joist 30b. A bolt through hole (not shown) similar to the inner side joist 30b is formed in the lower flange portion 32a. The end horizontal joist 30a is arranged so that the upper flange portion 32 extends toward the adjacent inner horizontal joist 30b. The end side joists 30a may have the same shape as the inner side joists 30b.

  In this embodiment, the rafter 10 and the inner horizontal joist 30b are fixed by the fixing structure of the frame material. As shown in FIGS. 4 and 5, the frame material fixing structure includes an accommodation groove 11 formed in one frame material (the rafter 10), and a first reinforcing member 50 accommodated in the accommodation groove 11. The second reinforcing member 60 located outside the housing groove 11 and a bolt through hole (not shown) formed in the locking plate piece (the lower flange portion 32a of the horizontal joist 30) of the other frame member. ing.

  As shown in FIG. 4, the accommodation groove 11 is a groove in which the head of the bolt B is accommodated. The housing groove 11 has a rectangular cross-sectional shape. A pair of locking portions 12, 12 extending inward from the groove sidewalls on both sides are formed at the upper opening end of the receiving groove 11. The locking portion 12 is parallel to the bottom surface of the receiving groove 11 and is formed along the longitudinal direction of the receiving groove 11. The locking part 12 locks the first reinforcing member 50 and holds it inside the receiving groove 11. The clearance between the locking portions 12 and 12 has a width dimension that allows the body of the bolt B to be inserted. The locking portion 12 is formed with a ridge 13 for guiding the movement of the first reinforcing member 50 (hereinafter sometimes referred to as “guide ridge 13”). The ridge 13 is formed along the longitudinal direction of the receiving groove 11 and is formed to protrude downward from the lower surface of the locking portion 12. The ridge 13 is formed on each of the locking portions 12, 12.

  A pair of protrusions 14, 14 (hereinafter sometimes referred to as “bolt rotation preventing protrusion 14”) for preventing the bolt B from rotating is formed at the bottom of the housing groove 11. Each protrusion 14 is formed along the longitudinal direction of the accommodation groove 11. The internal dimension between the pair of protrusions 14 and 14 is larger than the dimension of the width across flats of the head of the bolt B and smaller than the diagonal distance. As a result, the bolt B can move between the protrusions 14 and 14 in the longitudinal direction but is prevented from rotating. The protrusion 14 has a height dimension shorter than the thickness dimension of the head of the bolt B.

  As shown in FIG. 5, the locking portion 12 is provided with positioning screws 15 for the first reinforcing member 50. The positioning screw 15 is provided in the vicinity of a position where the horizontal joist 30 is fixed to the rafter 10 (position corresponding to both ends in the longitudinal direction when the first reinforcing member 50 is installed at a desired position). The positioning screw 15 is provided so as to penetrate the locking portion 12, and the shaft portion projects from the lower surface of the locking portion 12 into the housing groove 11. The protruding shaft portion of the positioning screw 15 contacts the end surface of the first reinforcing member 50 in the groove longitudinal direction. The positioning screws 15 are respectively provided at positions corresponding to both end faces when the first reinforcing member 50 is installed at a desired position, and one of the positioning screws 15 depends on the moving direction when the first reinforcing member 50 is installed. The first reinforcing member 50 is attached before installation, and the other is attached after installation. Thereby, the first reinforcing member 50 can be finally locked and fixed from both sides.

  As shown in FIGS. 4 and 6, the first reinforcing member 50 includes a substrate portion 51 sandwiched between the head of the bolt B and the locking portion 12, and a wall plate portion 52 orthogonal to the substrate portion 51. And has a U-shaped cross section (having a concave portion surrounded by the substrate portion 51 and the wall plate portions 52, 52). The first reinforcing member 50 is made of an extruded shape made of an aluminum alloy. The substrate part 51 is formed thicker than the locking part 12. The substrate portion 51 has a width dimension equivalent to the width (internal width dimension) of the receiving groove 11. The width dimension equivalent to the width of the receiving groove 11 is slightly smaller than the inner width of the receiving groove 11, and the first reinforcing member 50 does not get caught on the inner wall surfaces of the receiving groove 11, so It is a dimension that can be moved. Further, in the fixed state, the upper surface of the substrate portion 51 hits the lower surface of the locking portion 12 to generate a frictional force. A guide groove 53 is formed on the upper surface of the substrate portion 51 (the side surface opposite to the wall plate portion 52). The guide grooves 53 are provided at positions corresponding to the guide protrusions 13 and are parallel to each other. The guide ridge 13 is inserted into the guide groove 53.

  The wall plate portions 52 are provided at both ends of the substrate portion 51 in the width direction. The pair of wall plate portions 52, 52 extend at right angles to the substrate portion 51, and are parallel to each other. The outer surface of the wall plate portion 52 is flush with the outer surface of the substrate portion 51. The front end of the wall plate portion 52 is bent at a right angle inward in the width direction, and a reinforcing rib 52a is formed. The first reinforcing member 50 is disposed so that an opening having a U-shaped cross section opens toward the bottom of the receiving groove 11 (the concave portion opens toward the bottom of the receiving groove 11). And the head part of the volt | bolt B and the protrusion 14 for bolt rotation prevention are located in the recessed part inside the 1st reinforcement member 50. FIG. That is, the head of the bolt B and the bolt rotation preventing protrusion 14 are surrounded by the pair of wall plates 52 and 52 from both sides in the width direction of the housing groove 11. The height dimension of the first reinforcing member 50 (the dimension obtained by combining the thickness dimension of the substrate part 51 and the rising dimension of the wall plate part 52) is the same height as the depth (internal height dimension) of the receiving groove 11. Has dimensions. The equivalent width dimension is slightly smaller than the inner height of the receiving groove 11, and the first reinforcing member 50 does not get caught on the bottom surface of the receiving groove 11 or the lower surface of the locking portion 12. It is a dimension that can be moved.

  As shown in FIG. 5, the first reinforcing member 50 is arranged so that the pushing direction is the same as the longitudinal direction of the housing groove 11. The first reinforcing member 50 is formed in an elongated shape along the longitudinal direction of the housing groove 11 so as to penetrate a plurality of bolts B, B adjacent in the housing groove 11 along the longitudinal direction of the groove. Specifically, the length is substantially the same as the width of the inner side joist 30b (the length between both ends of the lower flange portions 32a and 32a). Bolt through holes 54 and 54 are formed in the substrate portion 51 at positions corresponding to the bolt through holes of the lower flange portions 32a and 32a (on the same axis). The distance between the bolt through holes 54 and 54 is the same as the distance between the bolt through holes of the lower flange portions 32a and 32a. Accordingly, the first reinforcing member 50 is a pair of bolts B and B adjacent to each other along the longitudinal direction of the groove in the housing groove 11 (bolts B and B inserted into the lower flange portions 32a and 32a of the inner horizontal joist 30b). Each is penetrated.

  As shown in FIG. 4, the second reinforcing member 60 includes a substrate portion 61 and a wall plate portion 62 and has a U-shaped cross section (enclosed by the substrate portion 61 and the wall plate portions 62 and 62). Have a recess). The substrate portion 61 is sandwiched between the locking portion 12 and the nut N. The second reinforcing member 60 is provided for each of the lower flange portions 32a on both sides.

  The second reinforcing member 60 is made of an extruded shape made of an aluminum alloy. The second reinforcing member 60 has a cross-sectional shape equivalent to that of the first reinforcing member 50. The substrate unit 61 has the same cross section as the substrate unit 51. The wall plate portion 62 has the same cross section as the wall plate portion 52, and a reinforcing rib 62a is formed at the tip. The second reinforcing member 60 is arranged so that the opening of the U-shaped cross section is opened upward (on the side joist 30 side) (the recessed portion is opened toward the distal end side of the shaft portion of the bolt B). ). The shaft portion of the bolt B and the nut N are located in the concave portion inside the second reinforcing member 60. That is, the shaft portion of the bolt B and the nut N are surrounded by the pair of wall plate portions 62 and 62 from both sides in the width direction of the second reinforcing member 60. Note that the second reinforcing member 60 has the same cross-sectional shape as the first reinforcing member 50 for the convenience of manufacture, but may have any size and shape as long as it has a predetermined strength.

  As shown in FIG. 5, the second reinforcing member 60 is arranged so that the longitudinal direction of the accommodation groove 11 and the extrusion direction are the same. The 2nd reinforcement member 60 is formed in the length substantially equivalent to the overhang | projection length of the lower flange part 32a, and covers the nut N from the lower side. A bolt through hole 64 is formed in the substrate portion 61.

  The first reinforcing member 50 and the second reinforcing member 60 configured as described above are fastened by bolts B and nuts N. Thereby, the first reinforcing member 50 and the second reinforcing member 60 sandwich the locking portion 12 of the rafter 10. Between the first reinforcing member 50 and the second reinforcing member 60, the lower flange portion 32 a is also located together with the locking portion 12, and is sandwiched together.

  The procedure for constructing the frame material fixing structure according to this embodiment will be described below. The construction procedure described below is a common construction procedure applied to both the case where the inner side joist 30b and the rafter 10 are fixed and the case where the end side joist 30a and the rafter 10 are fixed. First, the shaft portions of the pair of bolts B and B are inserted through the bolt through holes 54 and 54 from the wall plate portion 52 side of the first reinforcing member 50. One positioning screw 15 is attached to the locking portion 12. Then, the first reinforcing member 50 and the bolts B and B are inserted from the end portions of the receiving grooves 11, and the shaft B of the bolt B protrudes from the gap between the locking portions 12 and 12. 30 is moved along the longitudinal direction of the groove. At this time, the first reinforcing member 50 is slightly smaller than the internal dimension of the receiving groove 11, so that it does not get caught on the inner surface of the receiving groove 11. Further, since the guide protrusion 13 on the lower surface of the locking portion 12 enters the guide groove 53 on the upper surface of the substrate portion 51, the first reinforcing member 50 moves smoothly along the accommodation groove 11. The first reinforcing member 50 and the bolts B and B are accurately and easily stopped at a predetermined position by positioning screws 15 provided on the locking portion 12.

  Then, while installing the horizontal joist 30 on the axial part of the volt | bolts B and B which protrude from the rafter 10, the 2nd reinforcement members 60 and 60 are each installed. The second reinforcing member 60 is lowered from above the bolt B with the wall plate portion 62 facing upward, and the shaft portion of the bolt B is inserted into the bolt through hole 64. Then, the nut N is attached to the shaft portion of the bolt B protruding from the substrate portion 61 of the second reinforcing member 60 and tightened. At this time, since the head of the bolt B is in a state in which the rotation is prevented by the protrusions 14, 14, the nut N can be easily tightened. Thereafter, the positioning screw 15 is attached to the opposite end of the first reinforcing member 50, and the first reinforcing member 50 is sandwiched between the positioning screws 15.

  As described above, when the first reinforcing member 50 and the second reinforcing member 60 are tightened with the bolt B and the nut N, the first reinforcing member 50 and the second reinforcing member 60 are connected to the locking portion 12 of the rafter 10 and the horizontal joist 30. The lower flange portion 32a is clamped.

  According to the fixing structure of the frame material having such a configuration, the contact area to the locking portion 12 can be increased by the first reinforcing member 50. Therefore, even if the frame members are pulled away from each other by the negative pressure (the horizontal joist 30 is pulled up), the pressing force (the bolt B of the bolt B) tries to move upward. The support pressure from the head) is distributed over a wide area and acts on the locking portion 12. As a result, the surface pressure applied to the locking portion 12 can be reduced, and deformation (rolling up) of the locking portion 12 can be suppressed, so that a large negative pressure can be withstood. In the present embodiment, since the first reinforcing member 50 has a width dimension substantially equal to the width of the housing groove 11, the width dimension of the first reinforcing member 50 can be maximized. Thereby, the contact area to the latching | locking part 12 of the 1st reinforcement member 50 can be enlarged, and it can endure a bigger negative pressure. Furthermore, since the board | substrate part 51 of the 1st reinforcement member 50 is formed thicker than the latching | locking part 12, it can disperse | distribute and transmit the supporting force which acts intensively from the head of the volt | bolt B over a wide range. . Further, by providing the first reinforcing member 50 for each installation position of the bolt B, efficient reinforcement can be performed. That is, since the cross-sectional rigidity is intensively increased for each installation position of the bolt B, it is not necessary to increase the thickness of the entire locking portion 12, and the weight of the rafter 10 is prevented.

  Further, the first reinforcing member 50 is formed in a length substantially equal to the width of the horizontal joists 30 (the end horizontal joists 30a and the inner horizontal joists 30b) (the length between both ends of the lower flange portions 32a and 32a). Therefore, the contact area of the first reinforcing member 50 to the locking portion 12 can be further increased. Therefore, the surface pressure applied to the locking portion 12 can be further reduced. Moreover, the frictional force of the 1st reinforcement member 50 and the latching | locking part 12 can be enlarged because the contact area to the latching | locking part 12 of the 1st reinforcement member 50 becomes large, and the groove | channel longitudinal direction of the 1st reinforcement member 50 is made. Slip can be suppressed. Furthermore, since two bolts B and B are fixed by one first reinforcing member 50, the first reinforcing member 50 is installed as compared with the case where the first reinforcing member is provided for each bolt B and B. Time and effort can be reduced.

  Further, since the positioning screw 15 is provided in the locking portion 12, the positioning screw 15 contacts the end surface of the first reinforcing member 50 in the groove longitudinal direction, and the first reinforcing member 50 in the groove longitudinal direction is contacted. Slip and slip can be reliably prevented.

  Further, the first reinforcing member 50 has a U-shaped cross section and is arranged so that the head of the bolt B is positioned in the inner concave portion, so that the first reinforcing member 50 is efficiently reduced in weight. In addition, the cross-sectional rigidity of the first reinforcing member can be increased. That is, the wall plate portion 52 functions as a reinforcing rib, and the reinforcing rib 52a is formed at the tip of the wall plate portion 52, so that the cross-sectional rigidity of the first reinforcing member 50 is increased. Since the second reinforcing member 60 is also formed in a U-shaped cross section, it is possible to efficiently increase the cross sectional rigidity while reducing the weight of the second reinforcing member. Further, the first reinforcing member 50 and the second reinforcing member are both lighter in weight because the inside is hollow. Furthermore, both the first reinforcing member 50 and the second reinforcing member effectively use the space of the inner concave portion.

  In addition, since the first reinforcing member 50 has a height dimension equivalent to the depth of the housing groove 11, the height of the first reinforcing member 50 can be maximized and the cross-sectional rigidity can be increased.

  Furthermore, the latching | locking part 12 and the lower flange part 32a are clamped by the 1st reinforcement member 50 and the 2nd reinforcement member 60, and the latching | locking part 12 is hold | suppressed from both front and back, and the latching | locking part 12 and the lower flange part 32a Deformation can be further suppressed.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, a design change is possible suitably. For example, in this embodiment, the frame material fixing structure is used for fixing the rafter 10 and the horizontal joist 30. However, if an accommodation groove is formed in another frame material, it is also used for fixing other frame materials. Is possible. Furthermore, it is employable also as a fixing structure of frame materials other than a solar panel mount.

  Furthermore, in the said embodiment, although the latching | locking part 12 is clamped with the 1st reinforcement member 50 and the 2nd reinforcement member 60, it is good also as only a 1st reinforcement member, without providing a 2nd reinforcement member. Even in such a configuration, since the contact area to the locking portion can be increased by providing the first reinforcing member, the pressing force that the first reinforcing member tries to move upward is dispersed over a wide area, and the locking portion It will take. As a result, the surface pressure applied to the locking portion can be reduced, and deformation (rolling up) of the locking portion can be suppressed. As a result, it is possible to withstand a large negative pressure.

  Thus, it is preferable to apply the fixing structure excluding the second reinforcing member when fixing the frame materials having a relatively small acting negative pressure, for example, the support column 40 and the brace 45. In addition, if the first reinforcing member is further elongated and the contact area with the locking portion is further increased, the structure can be applied as a fixing structure for frame members having relatively large acting negative pressure.

  Moreover, in the said embodiment, although the 1st reinforcement member 50 and the 2nd reinforcement member 60 are comprised by the extruded shape member made from an aluminum alloy, it is not limited to this. For example, you may form with other materials, such as stainless steel alloy, steel material, and resin material. Further, instead of the extruded shape, a plate material may be formed by bending.

1 Solar panel base 2 Solar panel 10 Rafter (one frame material)
11 Housing groove 12 Locking portion 30 Side joist (the other frame material)
32a Lower flange (locking plate piece)
50 1st reinforcement member 60 2nd reinforcement member

Claims (9)

It is a structure that fixes the frame materials using bolts and nuts,
An accommodation groove formed in one of the frame members and accommodating the head of the bolt;
A first reinforcing member that is housed in the housing groove and through which the shaft of the bolt passes,
A second reinforcing member positioned outside the receiving groove and through which the shaft portion of the bolt penetrates;
A bolt through-hole formed in the other locking plate piece of the frame material and through which the shaft portion of the bolt penetrates,
The receiving groove is formed with a pair of locking portions extending inward from the groove side walls on both sides,
The first reinforcing member is sandwiched between the head of the bolt and the locking portion,
The second reinforcing member is sandwiched between the locking plate piece and the nut,
The locking structure of the frame material, wherein the locking portion and the locking plate piece are sandwiched between the first reinforcing member and the second reinforcing member. The frame material fixing structure according to claim 1, wherein the first reinforcing member has a width dimension equivalent to a width of the receiving groove. The said 1st reinforcement member has a recessed part opened toward the bottom part of the said accommodation groove | channel, The head part of the said bolt is located in the said recessed part. The Claim 1 or Claim 2 characterized by the above-mentioned. Frame material fixing structure. The frame material fixing structure according to any one of claims 1 to 3, wherein the first reinforcing member has a height dimension equivalent to a depth of the receiving groove. The said 1st reinforcement member is comprised so that the some volt | bolt which adjoins along a groove | channel longitudinal direction within the said accommodation groove | channel may each be penetrated. The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Fixed structure of frame material as described in 1. The said 2nd reinforcement member has a recessed part opened toward the front end side of the axial part of the said volt | bolt, The said nut is located in the said recessed part. Any of Claim 1 thru | or 5 characterized by the above-mentioned. The frame material fixing structure according to claim 1. The frame according to any one of claims 1 to 6, wherein the locking portion is provided with a positioning screw that comes into contact with an end surface of the first reinforcing member in the groove longitudinal direction. Material fixing structure. It is a structure that fixes the frame materials using bolts and nuts,
An accommodation groove formed in one of the frame members and accommodating the head of the bolt;
A reinforcing member that is housed in the housing groove and through which the shaft of the bolt penetrates;
A bolt through hole formed in the other frame material and through which the shaft portion of the bolt passes,
The receiving groove is formed with a pair of locking portions extending inward from the groove side walls on both sides,
The reinforcing member is sandwiched between a head portion of the bolt and the locking portion. The frame material fixing structure according to any one of claims 1 to 8, wherein the frame material constitutes a solar panel mount for supporting the solar panel.

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