JP5683391B2 - Panel mounting bracket - Google Patents

Description

  The present invention relates to a panel mounting bracket for mounting, for example, a panel serving as an outer wall member of a building to a base material provided on the building side of the building.

  An example of the conventional panel mounting bracket is shown in FIGS. 16 and 17 (see, for example, Patent Document 1). The panel mounting bracket 1 includes a panel 2 made of a hollow extruded cement board or a panel made of ALC (Autoclaved Lightweight Concrete), for example, on a base material 3 made of a C-type channel material provided on the building side of a building. It can be attached (fastened).

  When the panel mounting bracket 1 is used to attach the panel 2 to the base material 3 of the building, the engaging portion 4 is engaged with the edge 3a of the base material 3 as shown in FIG. With the base end portion of the main body portion 5 in contact with the surface of the panel 2, the bolt 6 is inserted into the insertion hole 1 a of the engagement main body portion 5 and the mounting hole 2 a formed in the panel 2. The nut member 7 is screwed to the tip of the bolt 6, and the bolt 6 is fastened to the nut member 7. Accordingly, the panel 2 can be attached to the base material 3. The nut member 7 is disposed in a hollow portion 2 b formed in the panel 2.

  Then, as shown in FIG. 16, in a state where the engaging portion 4 is engaged with the edge portion 3 a of the base material 3 and the base end portion of the engaging main body portion 5 is brought into contact with the surface of the panel 2, The panel mounting bracket 1 is inclined with respect to the surface of the panel 2, whereby a gap 8 is formed between the lower surface of the engagement main body 5 and the surface of the panel 2. The gap 8 serves as a tightening margin for pressing the engaging portion 4 against the edge 3 a of the base material 3 by tightening the bolt 6 to the nut member 7.

  Therefore, when the bolt 6 shown in FIG. 16 is tightened with a predetermined torque, the nut member 7 disposed in the hollow portion 2b of the panel 2 presses the inner surface of the panel 2 upward with a predetermined pressing force F1. The engaging portion 4 presses the edge 3a of the base material 3 against the panel 2 side (downward in the figure) with a predetermined force F2, and the base end portion of the engaging main body portion 5 is the surface of the panel 2. Is pressed downward with a predetermined force F3.

JP 2002-70223 A

  However, in the conventional panel mounting bracket 1 shown in FIGS. 16 and 17, in order to attach the panel 2 to the base material 3 with the specified fastening force F2, it is necessary to tighten the bolt 6 with the specified torque. The bolt 6 may be tightened with a torque larger than the prescribed torque so that the fastening force does not become less than the prescribed value.

  When the bolt 6 is tightened with a torque larger than the specified value, the force F1 that the nut member 7 shown in FIG. 16 presses the inner surface of the panel 2 in the upward direction in the figure also becomes larger than the specified value. Thus, the force F1 that the nut member 7 presses the inner surface of the panel 2 in the upward direction in the figure acts on the panel 2 as tensile stress or bending stress.

  However, in the panel 2 generally made of an extruded cement board using cement, the strength against the tensile stress and bending stress is smaller than the compressive stress, so when the tightening force of the bolt 6 is excessively larger than the specified torque, The panel 2 made of such an extruded cement board or the like is subjected to a tensile stress or bending stress that is greater than its adaptive stress, and in some cases, this panel 2 may be subjected to such tensile stress or bending stress. There is a possibility that a portion to which stress is applied, for example, a peripheral portion of the insertion hole 1a of the panel 2 is damaged.

  The present invention has been made to solve the above-described problems, and can attach a panel, which is a building material using cement, so that a compressive stress is applied to the fastening portion by fastening bolts. An object of the present invention is to provide a panel mounting bracket that can be attached to a base material with a predetermined fastening force.

  A panel mounting bracket according to the present invention is a panel mounting bracket for mounting a panel to a base material of a building, and is formed in a frame shape and has an engagement main body portion having an engagement portion that is engaged with the base material, An attachment portion disposed inside the engagement main body portion, coupled to a portion formed at a position opposite to the engagement portion of the engagement main body portion, and having an insertion hole for inserting a bolt. And with the engaging part engaged with the base material, the bolt is inserted into the insertion hole of the attachment part and the attachment hole formed in the panel, and the tip of the bolt is screwed into the nut member. When the bolt is tightened, the attachment portion is elastically deformed, and the panel is sandwiched between the attachment portion and the nut member.

  When using the panel mounting bracket according to the present invention to attach a panel to a building base material, the bolt is formed in the insertion hole and the panel of the mounting portion with the engaging portion engaged with the base material. The nut is inserted into the mounting hole, and a nut member is screwed onto the tip of the bolt to tighten the bolt. At this time, the attachment portion is elastically deformed, and the panel is sandwiched between the attachment portion and the nut member. Thus, the panel can be attached to the base material.

  When the mounting portion is elastically deformed by the bolt tightening force (force in a direction in which the mounting portion approaches the surface of the panel), the elastic force generated at that time is the force with which the engaging portion of the panel mounting bracket presses the base material. Thus, the panel can be attached to the base material by this pressing force. When the bolt is further tightened against the nut member, the tightening force of the bolt becomes a force (compression force) for sandwiching the panel between the mounting portion and the nut member, and this force (compression force) for inserting the panel The mounting bracket can be strongly attached to the panel.

  In the panel mounting bracket according to the present invention, the engaging portion has a substantially V-shaped cross section, and an inner surface of the substantially V-shaped groove of the engaging portion is substantially perpendicular to the surface of the panel. It may be formed so as to engage with an edge of the protruding base material.

  In this way, for example, when an interlayer displacement occurs in the panel due to an earthquake or the like, even if the engaging portion of the panel mounting bracket moves in a direction away from the edge of the base material, the movement is substantially the same as the engagement portion. It can be blocked by the inner surface of the V-shaped groove. Therefore, the engaged state can be maintained so that the engaging portion does not come off from the edge of the base material.

  In the panel mounting bracket according to the present invention, the engaging portion is a flat plate shape substantially parallel to the engaging main body portion, and the surface of the engaging portion is substantially parallel to the surface of the panel. It is good also as what is formed so that the edge part of this may be pressed.

  In this way, even when a force is applied to the panel in a direction perpendicular to the panel in a direction away from the base material, the panel can be engaged and fastened so as not to be separated from the base material. it can.

  In the panel mounting bracket according to the present invention, the insertion hole formed in the mounting portion is a long hole extending in a direction substantially orthogonal to a direction in which the base material extends, and the engagement main body portion includes the long hole. And ribs may be formed in parallel.

  Thus, when the insertion hole formed in the attachment portion is a long hole, the engagement position of the engagement portion with respect to the base material can be adjusted along the long hole. And by forming a rib in an engagement main-body part in parallel with a long hole, the intensity | strength of an engagement main-body part can be raised, and, thereby, a panel can be firmly fastened to a base material.

  In the panel mounting bracket according to the present invention, the mounting portion may be provided by forming a cut along the rib.

  If it does in this way, even if it forms incision in order to provide an attaching part, the intensity required for an engagement main-body part can be secured by a rib.

  In the panel mounting bracket according to the present invention, the mounting portion is formed with a protruding portion that protrudes toward the engaging portion, and the protruding portion uses the panel mounting bracket to attach the panel to the base material. It is good to be formed so that it may contact | abut to the edge of the said base material, or may be arrange | positioned through the clearance gap between the edge of the said base material.

  As described above, the protruding portion of the mounting portion is in contact with the edge of the base material or with a gap from the edge of the base material in a state where the panel is attached to the base material using the panel mounting bracket. Therefore, the positional relationship between the panel mounting bracket and the base material can be regulated so as not to deviate. Thereby, the positional relationship between the panel mounting bracket and the base material can be maintained in a state as originally defined.

  According to the panel mounting bracket according to the present invention, the operator tightens the bolt until the panel is sandwiched between the mounting portion and the nut member, so that the engaging portion of the panel mounting bracket has the base material as prescribed. The panel can be pressed with a pressing force, whereby the panel can be easily attached to the base material with a specified fastening force.

  When the bolt is tightened, if the mounting portion comes into contact with the surface of the panel, the bolt tightening force acts as a compression force that sandwiches the panel between the mounting portion and the nut member. Therefore, even if the operator tightens the bolt a little harder, the panel, which is a building material using cement, can be attached so that the fastening portion is subjected to compressive stress by fastening the bolt. It can be easily attached to the base material so as to have a prescribed fastening force.

  In addition, by setting the elastic force of the mounting part of the panel mounting bracket to be large, it is possible to increase the force with which the engaging part presses the base material toward the panel, thereby increasing the fastening force of the panel. Can do. In this case, the force with which the nut member presses the panel increases. However, the panel is sandwiched between the mounting portion and the nut member, and a compressive force is applied. It does not occur.

  In addition, even when the interlayer displacement occurs in the panel due to, for example, an earthquake, and the bolt is displaced with respect to the panel mounting bracket, the mounting portion is elastically deformed and is in contact with the panel substantially parallel to the panel. The desired tightening force by the bolt can be maintained, and the fastening portion of the panel can always maintain a state in which a compressive stress is applied. Thus, the panel mounting state can be maintained in a state before an interlayer displacement occurs in the panel.

It is a longitudinal cross-sectional view which shows the state which attached the panel to the base material using the panel mounting bracket which concerns on 1st Embodiment of this invention. It is a figure which shows the panel attachment metal fitting shown in FIG. 1, (a) is a top view, (b) is a front view, (c) is a right view. It is a longitudinal cross-sectional view which shows the state which fastens the panel attachment metal fitting shown in FIG. 1 with a volt | bolt. It is a longitudinal cross-sectional view which shows the state which attached the upper part and lower part of the panel to the base material using the panel mounting bracket which concerns on the 1st Embodiment. It is a perspective view which shows the state which attached the panel shown in FIG. 4 to the base material. It is a rear view which shows the state which attached the panel shown in FIG. 4 to the base material. It is a longitudinal cross-sectional view which shows the state which attached the upper part and lower part of the panel to the base material using the panel mounting bracket which concerns on 2nd Embodiment of the invention. It is a longitudinal cross-sectional view which shows the state which attached the panel to the base material using the panel mounting bracket which concerns on 3rd Embodiment of the invention. It is a figure which shows the panel attachment metal fitting shown in FIG. 8, (a) is a top view, (b) is a front view, (c) is a right view. It is a longitudinal cross-sectional view which shows the state which attached the panel to the base material using the panel mounting bracket which concerns on 4th Embodiment of the invention. It is a figure which shows the panel attachment metal fitting shown in FIG. 10, (a) is a top view, (b) is a front view, (c) is a right view. It is a longitudinal cross-sectional view which shows the state which measures the amount of distortion applied to a panel, when the panel mounting bracket which concerns on 1st Embodiment is fastened with a volt | bolt. It is a figure which shows the strain gauge stuck on the surface of the panel shown in FIG. 12, (a) is the partial top view of the panel, (b) is the partial right view of the panel. It is a figure which shows the relationship between the bolt tightening torque and the distortion value which arises in a panel when the panel mounting bracket which concerns on the 1st Embodiment shown in FIG. 12 is tightened with a volt | bolt. It is a figure which shows the relationship between the bolt tightening torque and the distortion value which arises in a panel when the conventional panel attachment metal fitting shown in FIG. 16 is fastened with a bolt. It is a longitudinal cross-sectional view which shows the state which attached the panel to the base material using the conventional panel mounting bracket. It is a figure which shows the conventional panel attachment metal fitting shown in FIG. 16, (a) is a top view, (b) is a front view, (c) is a right view.

  Hereinafter, a first embodiment of a panel mounting bracket according to the present invention and a method for mounting a panel to an upper and lower base material 3 using the panel mounting bracket will be described with reference to FIGS. This panel 2 is an outer wall panel for forming the outer wall of a building, for example.

  As shown in FIG. 4, the panel mounting bracket 11 can attach the panel 2 to an upper base material 3 (for example, C-type steel material) and a lower base material 3 (C-type steel material) of a building. FIG. 5 is a partially cutaway perspective view showing a state in which the panel 2 shown in FIG. 4 is attached to the base material 3. 6 is a rear view showing a state in which the panel 2 shown in FIG.

  4 is welded to the beam 12 of the building, and the lower base material 3 shown on the upper side of the figure is welded to the beam 12 of the building via the flat bracket 13. Has been. The panel 2 is, for example, a hollow extruded cement board.

  In addition, in the gap between the lower end portion of the upper panel 2 and the upper end portion of the lower panel 2 shown in FIG. 4, the edge portions of the sealing material 14, the backup material 15, and the bracket 13 are attached in order from the outside. Has been. A rock wool material 16 is attached below the edge of the bracket 13.

  As shown in FIGS. 1 and 2, the panel mounting bracket 11 is formed by bending a substantially rectangular plate-like body, and includes an engagement main body portion 17 and a mounting portion 18.

  The engagement main body portion 17 is formed in a frame shape having a substantially rectangular planar shape, and has an engagement portion 19 that is engaged with the edge 3 a of the base material 3. The engagement portion 19 has a substantially V-shaped cross section, and the inner surface of the substantially V-shaped groove of the engagement portion 19 protrudes in a direction substantially perpendicular to the surface of the panel 2. It is formed to engage with the portion 3a. The engagement main body portion 17 is formed with two ribs 20 extending in a direction substantially orthogonal to the direction in which the base material 3 shown in FIG. 1 extends. The rib 20 is a protrusion formed by bending the engagement main body portion 17.

  The attachment portion 18 is formed in, for example, an elongated plate shape, and is disposed inside the engagement main body portion 17 formed in a substantially rectangular frame shape. Then, the base end portion of the mounting portion 18 is coupled to the inner edge portion formed on the portion opposite to the engaging portion 19 of the engaging main body portion 17, and has an insertion hole 11 a for inserting the bolt 6. doing. This insertion hole 11a is a long hole extending in a direction substantially orthogonal to the direction in which the base material 3 shown in FIG. 1 extends. The insertion hole 11 a is disposed between the two ribs 20 and is parallel to the ribs 20.

  And the protrusion part 21 which protrudes toward the engaging part 19 side is formed in the front-end | tip part of the attaching part 18, as shown in FIG.1 and FIG.2. The projecting portion 21 is a substantially triangular plate-shaped portion, and the front end portion of the projecting portion 21 is the edge 3 a of the base material 3 in a state where the panel 2 is attached to the base material 3 using the panel mounting bracket 11. Or is arranged so as to be spaced apart from the edge 3a of the base material 3.

  In addition, as shown in FIG. 1, the panel mounting bracket 11 is formed by attaching the bolt 6 to the insertion hole 11 a of the mounting portion 18 and the panel 2 with the engaging portion 19 engaged with the base material 3. When the bolt 6 is tightened by being inserted into the hole 2 a and screwing the tip of the bolt 6 into the nut member 7, the mounting portion 18 is elastically deformed, and the panel 2 is interposed between the mounting portion 18 and the nut member 7. It is comprised so that it may pinch | interpose. The nut member 7 is disposed in the hollow portion 2 b of the panel 2.

  Furthermore, as shown in FIG. 2A, the panel mounting bracket 11 is mounted by punching a boundary portion (substantially U-shaped portion) between the engagement main body portion 17, the mounting portion 18, and the protruding portion 21. A portion 18 and a protruding portion 21 are formed. As described above, when the attachment portion 18 is provided by forming the cut 22 along the rib 20, the engagement main body portion is formed by the rib 20 even if the cut 22 is formed to provide the attachment portion 18. The strength required for 17 can be ensured.

  Next, the operation of the panel mounting bracket 11 will be described with reference to FIGS. When this panel mounting bracket 11 is used to attach the panel 2 to the building base material 3, first, as shown in FIG. 3, the engagement portion 19 is engaged with the edge 3 a of the base material 3. Then, the bolt 6 is inserted into the insertion hole 11 a of the attachment portion 18 and the attachment hole 2 a formed in the panel 2, and the nut member 7 is screwed into the tip portion of the bolt 6 to tighten the bolt 6. As a result, as shown in FIG. 1, the attachment portion 18 is elastically deformed, and the panel 2 is sandwiched between the attachment portion 18 and the nut member 7. Accordingly, the panel 2 can be attached to the base material 3.

  When the mounting portion 18 is elastically deformed by the tightening force of the bolt 6 (force in a direction in which the mounting portion 18 is brought close to the surface of the panel 2), the elastic force generated at that time is the engagement portion 19 of the panel mounting bracket 11. Becomes a force for pressing the base material 3, and the panel 2 can be attached to the base material 3 by this pressing force. When the bolt 6 is further tightened with respect to the nut member 7, the tightening force of the bolt 6 becomes a force (compression force) for sandwiching the panel 2 between the mounting portion 18 and the nut member 7, and this sandwiching force ( The panel mounting bracket 11 can be strongly attached to the panel 2 by the compression force).

  Therefore, according to this panel mounting bracket 11, the operator tightens the bolt 6 until the panel 2 is sandwiched between the mounting portion 18 and the nut member 7, so that the engaging portion 19 of the panel mounting bracket 11 is engaged. The base material 3 can be pressed with a predetermined pressing force F4, and the panel 2 can be easily attached to the base material 3 with a predetermined fastening force.

  When the bolt 6 is tightened, when the mounting portion 18 comes into contact with the surface of the panel 2, the tightening force of the bolt 6 is between the mounting portion 18 and the nut member 7. Therefore, even if the operator tightens the bolt 6 to some extent, the panel 2 that is a building material using cement is attached to the panel 2 by fastening the bolt 6. It can be attached so that a compressive stress is applied to the fastening portion, and can be easily attached to the base material 3 so as to have a prescribed fastening force F4.

  Further, by setting the elastic force of the mounting portion 18 of the panel mounting bracket 11 to be large, the force F4 that the engaging portion 19 presses the base material 3 toward the panel 2 can be increased. The fastening force F4 can be increased. In this case, the force F5 by which the nut member 7 presses the panel 2 is increased, but the panel 2 is sandwiched between the mounting portion 18 and the nut member 7 so that the compression forces F5 and F6 are applied. There is no significant distortion and no damage.

  Furthermore, even when an interlayer displacement occurs in the panel 2 due to, for example, an earthquake, and the bolt 6 shown in FIG. 1 is displaced in the right direction in FIG. Since the panel 2 is in contact with the panel 2 substantially in parallel with the panel 2, the tightening force of the bolt 6 is not lowered or loosened, and a desired tightening force can be maintained. Thereby, the fastening force of the panel 2 can be maintained in a state before the interlayer displacement occurs in the panel 2.

  Further, for example, when an interlayer displacement occurs in the panel 2 due to an earthquake or the like, the engagement portion 19 of the panel mounting bracket 11 shown in FIG. 1 is disengaged from the edge portion 3a of the base material 3 (the left and right directions in the figure). ), The movement can be prevented by the inner surface of the substantially V-shaped groove of the engaging portion 19. Therefore, the engagement state can be maintained so that the engagement portion 19 does not come off from the edge 3 a of the base material 3.

  Then, as shown in FIG. 2A, when the insertion hole 11a formed in the attachment portion 18 is a long hole, the engagement position of the engagement portion 19 with respect to the base material 3 is adjusted along the long hole. Can do. Moreover, since the insertion hole 11a formed in the attachment part 18 is a long hole, it can accept | permit that the positional relationship with respect to the base material 3 and the panel attachment bracket 11 of the panel 2 and the volt | bolt 6 shifts | deviates by an earthquake etc. 2 damage can be prevented.

  Moreover, as shown in FIG.1 and FIG.2, the intensity | strength of the engagement main-body part 17 can be raised by forming the rib 20 in the engagement main-body part 17 in parallel with the insertion hole 11a of a long hole, Thus, the panel 2 can be strongly fastened to the base material 3.

  Furthermore, as shown in FIG. 1, the protruding portion 21 of the mounting portion 18 abuts against the edge 3 a of the base material 3 in a state where the panel 2 is attached to the base material 3 using the panel mounting bracket 11, or Since the base material 3 is formed so as to be spaced from the edge 3a of the base material 3, the positional relationship between the panel mounting bracket 11 and the base material 3 (the positional relationship in the horizontal direction in the figure) does not shift. Can be regulated. As a result, the positional relationship between the panel mounting bracket 11 and the base material 3 can be maintained in the originally prescribed state shown in FIG.

  Next, a second embodiment of the panel mounting bracket according to the present invention will be described with reference to FIG. The panel mounting bracket 24 shown on the upper side of FIG. 7 is that of the second embodiment, and the panel mounting bracket 11 shown on the lower side of FIG. 7 is that of the first embodiment.

  The difference between the second embodiment shown on the upper side of FIG. 7 and the first embodiment shown on the lower side of FIG. 7 is that the first embodiment shown on the lower side of FIG. The formed protrusion 21 is a flat plate-like portion formed on the same plane as the attachment portion 18, whereas in the second embodiment shown on the upper side of the same figure, it is formed at the tip of the attachment portion 18. The protruding portion 25 is formed as an L-shaped portion. Other than this, the second embodiment is the same as the first embodiment, and the equivalent parts are denoted by the same reference numerals, and the description thereof is omitted.

  As described above, the protruding portion 25 of the second embodiment is formed as an L-shaped portion because the protruding portion 25 is disposed at a distance from the surface of the panel 2 via the packing 26. This is to contact the edge 27a of the 27 or to be arranged with a gap from the edge 27a of the base material 27.

  The base material 27 is, for example, a Z-type steel material. The base material 27 is welded to a bracket (L-type steel material) 28, and the bracket 28 is welded to the beam 12.

  Next, a third embodiment of the panel mounting bracket according to the present invention will be described with reference to FIGS. The panel mounting bracket 31 of the third embodiment shown in FIGS. 8 and 9 shows an example in which the protruding portion 21 is not provided at the tip of the mounting portion 18. Other than this, it is equivalent to the panel mounting bracket 11 of the first embodiment shown in FIGS. 1 and 2, and the equivalent parts are denoted by the same drawing symbols, and the description thereof is omitted.

  Next, a fourth embodiment of the panel mounting bracket according to the present invention will be described with reference to FIGS. The difference between the fourth embodiment shown in FIGS. 10 and 11 and the first embodiment shown in FIGS. 1 and 2 is that the engaging portions 35 and 19 are different. And in 4th Embodiment shown in FIG. 10 etc., the protrusion part 21 is not provided in the front-end | tip of the attaching part 18, and the rib 20 is not provided either. Other than this, the second embodiment is the same as the first embodiment, and the equivalent parts are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 10 and 11, the engagement portion 35 provided in the panel mounting bracket 34 of the fourth embodiment is a rectangular flat plate substantially parallel to the engagement main body portion 17, and this engagement portion The surface of 35 is formed so as to be in surface contact with the surface of the edge portion 36a of the base material 36 substantially parallel to the surface of the panel 2.

  According to this panel mounting bracket 34, the edge portion 36 a of the base material (L-shaped steel) 36 is sandwiched between the engaging portion 35 and the panel 2, and the panel 2 is perpendicular to the panel 2. Even when a force in the direction of pulling away from the base material 3 is applied, the panel 2 can be engaged and fastened so as not to be pulled away from the base material 3.

  Next, referring to FIGS. 12 to 15, the amount of distortion applied to the panel 2 when the panel mounting bracket 11 according to the first embodiment and the conventional panel mounting bracket 1 shown in FIG. Will be described.

  FIG. 12 shows a state where the panel mounting bracket 11 according to the first embodiment is tightened with the bolt 6 using a torque wrench 38. As shown in the figure, when the tightening force of the bolt 6 exceeds a predetermined value and the panel 2 is sandwiched between the mounting portion 18 and the nut member 7, the further tightening force of the bolt 6 is The force (compression stress) F5 and F6 sandwiching the panel 2 between the nut 18 and the nut member 7 is such that the panel 2 is hardly subjected to tensile stress or bending stress. Further, the engaging portion 19 is in a state of pressing the edge portion 3a of the base material 3 against the panel 2 side (downward in the figure) with a predetermined force F4.

  On the other hand, as shown in FIG. 16, when the conventional panel mounting bracket 1 is tightened with the bolt 6 using the torque wrench 38, the nut member 7 causes the inner surface of the panel 2 to be predetermined by the tightening force of the bolt 6. With the pressing force F1, the engaging portion 19 presses the edge 3a of the base material 3 against the panel 2 side (downward in the drawing) with a predetermined force F2. The base end portion of the combined main body portion 17 is in a state of pressing the surface of the panel 2 downward with a predetermined force F3.

  Therefore, tensile stress or bending stress acts on the panel 2 due to the force with which the nut member 7 presses the inner surface of the panel 2 upward in the figure.

  FIG. 13 shows four strain gauges G1 to G4 that are attached to the peripheral portion of the mounting hole 2a on the surface of the panel 2 shown in FIG. With these four strain gauges G1 to G4, when the bolt 6 is tightened, strain values ε generated at four locations around the mounting hole 2a can be measured.

  FIG. 14 shows the relationship between the tightening torque value T and the strain value ε generated in the panel 2 when the panel mounting bracket 11 according to the first embodiment shown in FIG. As can be seen from FIG. 14, when the tightening torque value T is between 0 and T1, the mounting portion 18 is elastically deformed, and the panel 2 is subjected to tensile stress or bending stress. As T increases, the strain value ε increases. When the tightening torque value T reaches T2, the mounting portion 18 and the panel 2 are brought into close contact with each other, and the panel 2 is sandwiched between the mounting portion 18 and the nut member 7. Therefore, even if the tightening torque value T is increased beyond T2, the panel 2 is sandwiched between the mounting portion 18 and the nut member 7, so that the compressive stresses F5 and F6 act and the strain value gradually increases. ε decreases. Therefore, even if the tightening torque value T is increased to T3, the strain value ε generated in the panel 2 is ε31 so that the adaptive stress (adaptive stress based on tensile stress or bending stress) of the panel 2 is not exceeded. Can do. However, it is necessary to determine the set tightening torque value TS1 so as not to exceed the adaptive stress based on the compressive stress of the panel 2.

  Therefore, when the torque value exceeds T2, the mounting portion 18 and the panel 2 are brought into close contact with each other, and the engaging portion 19 presses the base material 3 with the maximum pressing force at this torque value T2. The bolt 6 can be tightened in a wide torque range that exceeds the torque value T2 and does not exceed the adaptive stress based on the compressive stress of the panel 2, and the tightening operation can be simplified.

  FIG. 15 shows the relationship between the tightening torque value T and the strain value ε generated in the panel 2 when the conventional panel mounting bracket 11 shown in FIG. As can be seen from FIG. 15, the strain value ε increases as the tightening torque value T increases.

  Accordingly, for example, the set tightening torque value TS2 can be determined to be T5 so as not to exceed the adaptive stress (adaptive stress based on tensile stress or bending stress) of the panel 2.

  Thus, the set tightening torque value TS is TS2 (= T5) in the conventional panel mounting bracket 1, whereas the set tightening torque value TS1 (= T5) in the panel mounting bracket 11 according to the first embodiment. = For example, T4> T5). At this time, since the distortion value ε41 at the torque value T4 of the panel mounting bracket 11 according to the first embodiment is smaller than the distortion value ε52 at the torque value T5 of the conventional panel mounting bracket 1, the first embodiment. Even if the torque value T of the panel mounting bracket 11 according to the above is set to a relatively large T4, the adaptive stress of the panel 2 can be prevented from exceeding.

  Therefore, the panel mounting bracket 11 according to the first embodiment can have its set tightening torque value TS1 larger than the set tightening torque value TS2 of the conventional panel mounting bracket 1, so that the panel 2 is more than the conventional one. The fastening force can be increased.

  As described above, the panel mounting bracket according to the present invention can attach a panel, which is a building material using cement, so that a compressive stress is applied to the fastening portion by fastening bolts, and as specified in the base material. It has an excellent effect of being able to be attached with a retaining force, and is suitable for application to such a panel mounting bracket.

2 Panel 2a Mounting hole 2b Hollow portion 3 Base material 3a Edge 6 Bolt 7 Nut member 11, 24, 31, 34 Panel mounting bracket 11a Insertion hole 12 Beam 13 Bracket 14 Sealing material 15 Backup material 16 Rock wool material 17 Engagement body Part 18 Mounting part 19, 35 Engaging part 20 Rib 21, 25 Protruding part 22 Notch 26 Packing 27, 36 Base material 27a, 36a Edge part 28 Bracket 38 Torque wrench F1, F2, F3, F4, F5, F6 Force G1, G2, G3, G4 strain gauge

Claims (6)

In the panel mounting bracket for mounting the panel to the building base material,
An engagement main body formed in a frame shape and having an engagement portion engaged with the base material;
An attachment portion disposed inside the engagement main body portion, coupled to a portion formed at a position opposite to the engagement portion of the engagement main body portion, and having an insertion hole for inserting a bolt. Prepared,
With the engagement portion engaged with the base material, a bolt is inserted into the insertion hole of the attachment portion and the attachment hole formed in the panel, and the tip of the bolt is screwed into the nut member. When the bolt is tightened, the mounting portion is elastically deformed, and the panel is clamped between the mounting portion and the nut member.   The engagement portion has a substantially V-shaped cross section, and an inner surface of the substantially V-shaped groove of the engagement portion is formed on an edge of the base material protruding in a direction substantially perpendicular to the surface of the panel. 2. The panel mounting bracket according to claim 1, wherein the panel mounting bracket is formed to be engaged.   The engaging portion has a flat plate shape substantially parallel to the engaging main body portion, and the surface of the engaging portion is formed so as to press the edge of the base material substantially parallel to the surface of the panel. The panel mounting bracket according to claim 1, wherein the panel mounting bracket is formed. The insertion hole formed in the attachment portion is a long hole extending in a direction substantially orthogonal to the direction in which the base material extends,
The panel mounting bracket according to any one of claims 1 to 3, wherein a rib is formed in the engagement main body portion in parallel with the elongated hole.   The panel mounting bracket according to claim 4, wherein the mounting portion is provided by forming a cut along the rib. The mounting portion is formed with a protruding portion that protrudes toward the engaging portion.
The projecting portion is disposed in contact with an edge of the base material or with a gap from the edge of the base material in a state where the panel is attached to the base material using the panel mounting bracket. The panel mounting bracket according to claim 1, wherein the panel mounting bracket is formed as described above.

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