Exterior wall panel fixing brackets and methods for fixing exterior wall panels

Abstract

To provide an outer wall panel fixture which can easily fix outer wall panels to support pillar materials when fixing the outer wall panels to the support pillar materials even if sash support pillar materials that support sash of an opening part are close to vertical rail materials of the outer wall panels.SOLUTION: An outer wall panel fixture 1 is a fixture to fix outer wall panels A with lip channel steel-like vertical rail materials A2 fixed to a back surface A1a to support pillar materials B1, and includes a first metal fixture 2 to be fixed to the vertical rail materials A2, a second metal fixture 3 to be fixed to the support pillar materials B1 and the first metal fixture 2, and a third metal fixture 3 to fix the second metal fixture 3 to the support pillar materials B1. The first metal fixture 2 has a first bolt 21 having an axis 21c eccentric from a center 21d of the head part, a first plate material 22 inserted into a shaft portion 21b of the first bolt 21 and a first nut 23 which is screwed to the shaft portion 21b protruding from the first plate material 22.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an exterior wall panel fastening fitting for connecting and fastening an exterior wall panel to a supporting pillar. [Background technology]

[0002] It has been known to use an L-shaped fastening metal fitting Z when fixing a concrete-based exterior wall panel X as shown in Fig. 16 to a supporting column material Y made of lip-channel steel. The exterior wall panel X has an exterior wall finishing material X1 made of precast concrete and a lip-channel steel-shaped vertical rail material X2 fixed to the back surface Xa side of the exterior wall finishing material X1, and the ends in the width direction are fixed to the supporting column material Y by the fastening metal fitting Z. The fastening metal fitting Z connects and fastens the exterior wall panel X to the column material Y by inserting the heads of bolts Z1 and Z2 into the grooves of the supporting column material Y and the vertical rail material X2, respectively, and fastening the nut Z4 from the indoor side with an L-shaped plate material Z3 sandwiched therebetween.

[0003] The bolt Z1 inserted into the groove of the vertical rail material X2 has a head Z1a that is an elongated plate, and the short-side distance of the head Z1a is equal to or less than the distance between the lips Xb of the vertical rail material X2, and the long-side distance is equal to or greater than the distance between the lips Xb and equal to or less than the width of the groove X3 of the vertical rail material X2. Therefore, when the bolt Z1 is rotated to orient the long-side direction of the head Z1a horizontally, both ends of the long-side direction of the head Z1a can be engaged with the lips Xb of the vertical rail material X2, and the lips Xb can be clamped together with the plate material Z3 by tightening the nuts Z4. For example, Patent Document 1 is known as a device that uses such a fastener. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-27003 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, as shown in Fig. 17, when an opening Xc for installing a sash is formed in an exterior wall finishing material X, a sash support column Y1 for supporting the sash is installed on the back surface Xa side of the exterior wall finishing material X1. In this case, the sash support column Y1 may come too close to the lip Xb of the vertical rail material X2, and the impact wrench tightening the nut Z4 may interfere with the sash support column Y1, making it difficult to install the fixing bracket Z properly.

[0006] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide an exterior wall panel fixing bracket and a method for fixing an exterior wall panel using the same, which can easily connect and fix an exterior wall panel to a support column when fixing an exterior wall panel with an opening to the support column, even when the sash support column supporting the sash of the opening and the vertical rail material of the exterior wall panel are close to each other. [Means for solving the problem]

[0007] The first exterior wall panel fixing metal fitting of the present invention is an exterior wall panel fixing metal fitting for fixing an exterior wall panel having a plate-shaped exterior wall finishing material and a lip channel steel-shaped vertical rail material fixed to the back side of the exterior wall finishing material and opening toward the interior of the room, to a supporting column material, the exterior wall panel fixing metal fitting comprising: a first metal fitting fixed to the vertical rail material; a second metal fitting fixed to a side surface of the supporting column material and to the first metal fitting; and a third metal fitting for fixing the second metal fitting to the side surface of the supporting column material, the first metal fitting being a first bolt having a long and slender plate-shaped head and an axis eccentric from the center of the head in the longitudinal direction; Firmly a first insertion hole through which the shaft portion of the first bolt is inserted is formed , movable in the longitudinal direction The first bolt has a first plate material and a first nut screwed onto a shaft portion of the first bolt protruding from the first insertion hole, the first bolt has a head whose short-side distance is equal to or less than the distance between the lips of the vertical rail material, and whose head whose long-side distance is greater than the distance between the lips of the vertical rail material and is equal to or less than the groove width of the vertical rail material, and the first insertion hole is The longitudinal direction of the first plate material It is characterized by a long hole extending to the

[0008] In the second exterior wall panel fastening fixture of the present invention, the first bolt has a protrusion formed on the surface of the shaft portion side of the head portion, and the first plate member has the first bolt extending in the longitudinal direction of the head portion. The short side direction of the first plate material In the direction of the third metal fitting In the longitudinal direction of the first plate material A confirmation hole that allows the protrusion to be visually confirmed when moved have It is characterized by the following.

[0009] The third exterior wall panel fixing bracket of the present invention is characterized in that the first bolt has a linear engraving formed on the tip surface of the shaft, and the extending direction of the straight line of the engraving is the same as the longitudinal direction of the head of the first bolt.

[0010] In a fourth exterior wall panel fixing bracket of the present invention, the first bracket has a head fixed to the first plate material and a second bolt with a shaft protruding in the same direction as the shaft of the first bolt, the second bracket is fixed to a side surface of the support column material and has an L-shaped second plate material having a second insertion hole through which the shaft of the second bolt is inserted, and a second nut screwed onto the shaft of the second bolt protruding from the second insertion hole, and the edge of the second plate material opposite to the third bracket side is located closer to the third bracket than the first nut, and the second insertion hole is The longitudinal direction of the first plate material It is characterized by a long hole extending to the

[0011] In the fifth exterior wall panel fixing metal fitting of the present invention, the second plate member is provided with an end edge opposite to the third metal fitting, the first plate member being oriented toward the third metal fitting. In the longitudinal direction of the first plate material The portion adjacent to the first nut when moved is cut out in a semicircular shape.

[0012] The first method for fixing an exterior wall panel of the present invention is a method for fixing an exterior wall panel having a plate-shaped exterior wall finishing material and a lip-channel steel-shaped vertical rail material fixed to the back side of the exterior wall finishing material and opening toward the interior, to a supporting column material by using the exterior wall panel fixing metal fittings described in any one of the first to fifth methods, the method comprising the steps of: fixing the second metal fitting to the side surface of the supporting column material with the third metal fitting; inserting the head of the first bolt into the groove of the vertical rail material to abut the first plate material against the back side of the exterior wall finishing material; and fastening the first bolt in the direction of the third metal fitting. In the longitudinal direction of the first plate material The head of the first bolt is moved. Longitudinal direction The head of the first bolt is engaged with the lip of the vertical rail material, and the first nut is tightened. Then, the first plate material is rotated so that the head of the first bolt is engaged with the lip of the vertical rail material. Longitudinal The feature of this invention is to adjust the position of the direction. Effect of the Invention

[0013] According to the first exterior wall panel fixing metal fitting of the present invention, the first bolt has a long and slender plate-shaped head, the short-side distance of the head is equal to or less than the distance between the lips of the vertical rail material, the long-side distance is greater than the distance between the lips of the vertical rail material, and is equal to or less than the groove width of the vertical rail material. Therefore, the head of the first bolt can be inserted into the groove of the vertical rail material with its long-side direction facing vertically, and both ends of the head can be engaged with each lip of the vertical rail material by rotating the head in the groove. In addition, since the axis of the first bolt is eccentric from the center of the head in the long-side direction, the head can be engaged with each lip of the vertical rail material by moving the first bolt horizontally along the first insertion hole toward the third metal fitting with the head inserted in the groove, and rotating the bolt 90 degrees so that the end of the head opposite the axis of the head faces in the opposite direction to the third metal fitting. In other words, even if some kind of member interferes with the lip of the vertical rail material on the side opposite the support column material, the distance between the shaft of the first bolt and the interfering member can be widened, so that the first nut can be easily tightened with a special tool.

[0014] According to the second exterior wall panel fixing metal fitting of the present invention, the first plate material has a confirmation hole that allows the projection to be visually confirmed when the first bolt moves horizontally toward the third metal fitting with the longitudinal direction of the head oriented vertically. Therefore, the horizontal position of the first bolt can be fine-tuned while checking the position of the projection through the confirmation hole, improving workability.

[0015] According to the third exterior wall panel fixing bracket of the present invention, the first bolt has a linear marking formed on the tip surface of the shaft, and the extending direction of this straight line is the same as the longitudinal direction of the head of the first bolt. Therefore, when the head of the first bolt is inserted into the groove of the vertical rail material, the longitudinal direction of the head can be grasped through the first plate material by checking the marking from the shaft side, improving workability.

[0016] According to the fourth exterior wall panel fixing fixture of the present invention, the edge of the second plate material opposite to the third fitting side is located closer to the third fitting than the first nut, and the second insertion hole is an elongated hole extending horizontally. Therefore, when the second nut is loosened, the exterior wall panel to which the first plate material is fixed can be moved horizontally along the second insertion hole, making it easy to adjust the horizontal position of the exterior wall panel.

[0017] According to the fifth exterior wall panel fixing metal fitting of the present invention, the second plate material has a semicircular cutout at the edge opposite the third metal fitting side, which is adjacent to the first nut when the first plate material is moved horizontally toward the third metal fitting. Therefore, even if the exterior wall panel to which the first plate material is fixed is moved horizontally toward the third metal fitting, the second plate material does not interfere with the first nut, and the position of the exterior wall panel can be smoothly adjusted.

[0018] According to the first exterior wall panel fixing method of the present invention, the first bolt is moved horizontally toward the third metal fitting, and then the head of the first bolt is engaged with the lip of the vertical rail material and the first nut is tightened. Therefore, even if some member interferes with the lip of the vertical rail material on the opposite side to the support column material, the distance between the shaft of the first bolt and the interfering member can be widened, so that the first nut can be easily tightened with a dedicated tool. In addition, the horizontal position of the exterior wall panel can be adjusted while the exterior wall panel is fixed to the support column material, which improves workability. [Brief description of the drawings]

[0019] [Figure 1] A plan view showing the exterior wall panel installed on the support column. [Diagram 2] A rear view showing the exterior wall panel installed on the support pillar. [Diagram 3] Side view of the exterior wall panel fixing bracket and support column material. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. 11 is a front view showing a state in which the first bolt is fixed to the first plate material. [Figure 7] Exploded side view of the third bracket. [Figure 8] FIG. 13 is a front view of the third fitting, illustrating the state in which the locking body is rotated. [Figure 9] Rear view of the exterior wall panel. [Figure 10] FIG. [Figure 11] Rear view showing the frame members. [Figure 12] A plan view showing the exterior wall panel fixing bracket fixed to the support column material. [Figure 13] FIG. 11 is a plan view showing a state in which the first bolt is horizontally moved. [Figure 14] FIG. 11 is a rear view showing a state in which the first projection interferes with the second lip. [Figure 15]A rear view showing the other end of the exterior wall panel fixed to the support column. [Figure 16] FIG. 1 is a plan view showing an exterior wall panel fixed to a supporting column using conventional metal fittings. [Figure 17] 13 is a plan view showing a state in which the sash support pillar material interferes with the vertical rail material. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The best embodiment of the exterior wall panel fixing fitting of the present invention will be described below with reference to the drawings. Note that the "projection" and "lip of the vertical rail material" in the present invention correspond to the "first projection 21f" and the "second lip 4", respectively, in this embodiment.

[0021] As shown in Figure 1, the exterior wall panel fixing bracket 1 of the present application is a bracket for fixing a concrete-based exterior wall panel A to a support column material B1 made of lip channel steel, and comprises a first bracket 2 fixed to the exterior wall finishing material A, a second bracket 3 fixed to the side Ba of the first lip B1a, which is the lip of the support column material B1, and the first bracket 2, and a third bracket 4 fixing the second bracket 3 to the side Ba of the support column material B1.

[0022] 2, 4, and 5 includes a first bolt 21 having a plate-shaped head 21a, a first plate material 22 through which the shaft portion 21b of the first bolt 21 is inserted, a first nut 23 screwed onto the shaft portion 21b of the first bolt 21 protruding from the first plate material 22, and a second bolt 24 whose head 24a is fixed to the first plate material 22. As shown in Fig. 12, the exterior wall panel A to which the first fitting 2 is fixed has a lip-grooved steel-shaped vertical rail material A2 that opens toward the interior of the exterior wall finishing material A1 fixed to the back surface A1a of the plate-shaped exterior wall finishing material A1, and the head 21a of the first bolt 21 is inserted into the groove A3 of the vertical rail material A2. As shown in Fig. 5 and Fig. 6, the head 21a of the first bolt 21 is a slightly elongated plate material, and the short-side distance L1 is shorter than the width W1 between the second lips A4, which are the lips of the vertical rail material A2 shown in Fig. 12, and the long-side distance L2 is equal to or longer than the length of the width W1 between the second lips A4 and equal to or less than the groove width W2 (see Fig. 12) of the vertical rail material A2. As shown in the figures, the axis 21c of the shaft 21b of the first bolt 21 is eccentric from the center 21d in the longitudinal direction of the head 21a, and two first projections 21f are formed on the surface 21e of the head 21a on the shaft 21b side. These first projections 21f are formed at positions facing the shaft 21b across the center 21d in the longitudinal direction of the head 21a. The first bolt 21 thus formed is fixed to the first plate material 22 with the longitudinal direction of the head 21a facing vertically, but when the first nut 23 is tightened and rotated 90 degrees clockwise, the vertical orientation is adjusted in advance and fixed so that the shaft 21b of the first bolt 21 is positioned closer to the third fitting 4 than the longitudinal center 21d of the head 21a, as shown in Fig. 2. Note that the first bolt 21 has a linear marking 21h on the tip surface 21g of the shaft 21b, and by aligning the direction in which the straight line of the marking 21h extends with the longitudinal direction of the head 21a, the longitudinal direction of the head 21a can be grasped even through the first plate material 22.

[0023] The first plate material 22 shown in Figures 1, 2, 5 and 6 is a generally rectangular flat plate material that is slightly elongated in the horizontal direction, and is abutted against the back surface A1a of the exterior wall finishing material A1. As shown, the first plate material 22 has a first insertion hole 22b and a confirmation hole 22c that penetrate in the plate thickness direction formed near a first edge 22a, which is the edge opposite to the third fitting 4. The first insertion hole 22b is a hole through which the shaft portion 21b of the first bolt 21 is inserted, and is an elongated hole that extends in the horizontal direction. On the other hand, the confirmation hole 22c is a hole for visually checking the first protrusion 21f of the first bolt 21, and is formed in the portion where the first protrusion 21f is located when the first bolt 21 moves horizontally toward the third fitting 4 with the longitudinal direction of the head 21a facing vertically and moves horizontally to a position where it does not interfere with the groove A3 of the vertical rail material A2 even when the head 21a of the first bolt 21 is rotated clockwise.

[0024] In addition, the first plate material 22 has a plurality of second projections 22e formed on the first plate surface 22d, which is the plate surface on the side of the head 21a of the first bolt 21. The plurality of second projections 22e are formed to surround the first insertion hole 22b and engage with the edges of the second lip A4 to prevent the first plate material 22 from shifting sideways when the first plate surface 22d is abutted against the exterior wall finishing material A1. As shown in the figure, these second projections 22e are arranged at intervals from each other in the horizontal or vertical direction and are arranged symmetrically with respect to the first insertion hole 22b. In addition, the distance L3 between the edges of the parts furthest from each other of the second projections 22e adjacent to each other in the horizontal direction is approximately the same as the width W3 between the second lips A4, and when the second projections 22e are engaged with the edges of the second lip A4, the horizontal position of the first plate material 22 can be locked. Furthermore, the second protrusions 22e formed at the position closest to the first insertion hole 22b are formed above and below the first insertion hole 22b and toward the third fitting 4, and when the first bolt 21 moves horizontally along the first insertion hole 22b toward the first edge 22a and attempts to rotate clockwise, these second protrusions 22e interfere with the first protrusions 21f and suppress the rotation. Also, as shown in Figures 2 and 4, the second bolt 24 is disposed closer to the third fitting 4 than the first bolt 21, and the head 24a is crimped to the first plate material 22, and the shaft 24b protrudes in the same direction as the shaft 21b of the first bolt 21.

[0025] The second metal fitting 3 shown in Figs. 2, 4, and 5 has an L-shaped second plate member 31 through which the shaft portion 24b of the second bolt 24 is inserted, and a second nut 32 that is screwed onto the shaft portion 24b of the second bolt 24 protruding from the second plate member 31. As shown in the figures, the second plate member 31 is an L-shaped metal plate consisting of a first plate portion 31a fixed to the first plate member 22, and a second plate portion 31b extending from the edge of the first plate portion 31a on the third metal fitting 4 side in a direction perpendicular to the first plate member 22. A second insertion hole 31c for inserting the shaft portion 24b of the second bolt 24 is formed in the first plate portion 31a, and this second insertion hole 31c is an elongated hole extending in the horizontal direction. Therefore, by loosening the second nut 32, the second bolt 24 and the first plate member 22 can be moved horizontally along the second insertion hole 31c. Furthermore, the first plate portion 31a has a shorter horizontal length than the first plate material 22, and a second edge 31d, which is the edge opposite the third fitting 4, is located closer to the third fitting 4 than the first nut 23. This second edge 31d is cut out in a semicircular shape (31e shown in FIG. 2 etc.) so that a portion adjacent to the first nut 23 does not interfere when the first plate material 22 is moved in the direction of the third fitting 4, and this configuration allows the first plate material 22 to be moved smoothly.

[0026] On the other hand, the second plate portion 31b is a generally convex metal plate fixed to the third fitting 4, and a third insertion hole 31f, through which a shaft portion 41b of a third bolt 41 described below is inserted, is formed at approximately the same height as the first insertion hole 22b. Note that this third insertion hole 31f is an elongated hole extending in the horizontal direction, similar to the first insertion hole 22b and the second insertion hole 31c.

[0027] 2, 7 and 8 is a metal fitting that fixes the second fitting 3 to the support column material B1, and includes a third bolt 41 having a head 41a crimped to a plate-shaped locking body 40, a spring 42 inserted into the shaft portion 41b of the third bolt 41, a metal plate material 43 having a fourth insertion hole 43a formed therein through which the shaft portion 41b of the third bolt 41 is inserted, and a third nut 44 that tightens the third bolt 41. The locking body 40 is a C-shaped member that includes a locking portion 40a formed using a slightly elongated, substantially rectangular metal plate, and a pair of protrusions 40b that protrude from both ends of the locking portion 40a in the short side direction in a direction substantially perpendicular to the locking portion 40a. As shown in Figure 8, the engaging portion 40a has two corners located on one diagonal line cut diagonally, and the short-side distance L4 is less than the width W3 between the first lips B1a, which are the lips of the support column material B1 shown in Figure 3, and the long-side distance L5 is greater than the width W3 between the first lips B1a and less than the groove width W4 of the support column material B (see Figure 3).

[0028] The first fitting 2, second fitting 3, and third fitting 4 formed in this manner are connected and fixed together as a single unit, as shown in Fig. 2. That is, the second bolt 24 of the first fitting 2 is fixed to the second plate material 31, and the shaft portion 41b of the third bolt 41 is inserted through the spring 42, the third insertion hole 31f of the second fitting 3, the fourth insertion hole 43a of the metal plate material 43, and the third nut 44, and then the third nut 44 is tightened to form a single unit.

[0029] Next, the exterior wall panel A and the supporting column material B connected by the exterior wall panel fixing metal fitting 1 will be described. The exterior wall panel A shown in Fig. 1 and Fig. 9 is a member constituting the exterior wall of a building, and has a plate-shaped exterior wall finishing material A1 with an opening A1b formed therein, a pair of vertical rail materials A2 fixed to the back surface A1a side of the exterior wall finishing material A1 and both ends in the width direction of the exterior wall finishing material A1, and a pair of horizontal rail materials A5 fixed to the back surface A1a side and around both ends in the height direction of the opening A1b. The exterior wall finishing material A1 is a plate material made by molding precast concrete to a uniform thickness, and its surface is given a decorative finish. The vertical rail material A2 and the horizontal rail material A5 are embedded in the exterior wall finishing material A1 with openings on the back surface A1a side of the exterior wall finishing material A1.

[0030] The width of the exterior wall finishing material A1 is about 1000mm to 1020mm, and the opening A1b is formed in the center of the width of the exterior wall finishing material A1. The dimensions of the opening A1b are not particularly limited, but in the illustrated example, it is about 500mm wide and 750mm high. The vertical rail materials A2 are installed at positions where the distance from both ends of the exterior wall finishing material A1 in the width direction to the rail core is about 120mm to 135mm.

[0031] The exterior wall panel A thus formed is supported and fixed to a framework C formed by assembling a number of lip channel steels, as shown in Figures 10 and 11. The framework C is composed of a pair of supporting column members B1 standing with a gap between them in the horizontal direction, a pair of supporting cross members B2 respectively installed on the upper and lower ends of the pair of supporting column members B1, a pair of sash supporting column members B3 and a pair of sash supporting cross members B4 arranged around the opening A1b of the exterior wall finishing material A1, and is arranged on the back surface A1a side of the exterior wall finishing material A1.

[0032] The pair of support columns B1 are disposed at the portions where both ends of the exterior wall finishing material A1 in the width direction are located, and the first lips B1a are disposed so as to face each other. The sash support column B3 and the sash support horizontal member B4 are members for supporting a sash (not shown) installed in the opening A1b, and the pair of sash support horizontal members B3 are disposed near the positions of both ends of the width direction of the opening A1b, and the upper and lower ends are fixed to the pair of sash support horizontal members B4. The pair of sash horizontal members B4 are disposed near the positions of both ends of the height direction of the opening A1b, and the horizontal ends are fixed to the support column B1. Furthermore, if the opening A1b of the exterior wall panel A is dimensioned as described above, the support column material B1 and the sash support column material B3 will be close to each other, as shown in Figure 10, and when the exterior wall panel A is fixed to the frame material C, the sash support column material B3 will interfere with the second lip A4 of the vertical rail material A2.

[0033] Next, a method of fixing an exterior wall panel A to a support column B1 using the exterior wall panel fixing bracket 1 will be described. First, as shown in FIG. 12, the second bracket 3 is fixed to the support column B1 by the third bracket 4. Specifically, as shown in FIG. 3 and FIG. 8, the locking body 40 is inserted into the groove B5 of the support column B1 with the longitudinal direction of the locking portion 40a facing vertically, the third nut 44 is loosened with an impact wrench, and the third bolt 41 is rotated 90 degrees clockwise to rotate the longitudinal direction of the locking body 40 horizontally. Then, as shown in FIG. 12, both longitudinal ends of the locking body 40 are locked to the first lips B1a, and the third nut 44 is tightened again with an impact wrench to clamp the first lip B1a between the locking body 40 and the first plate portion 32b of the second bracket 3, and the second bracket 3 is fixed to the side Ba of the support column B1 on the first lip B1a side.

[0034] Next, the exterior wall panel A is fixed to the support column material B1. First, the first nut 23 is slightly loosened so that the first bolt 21 shown in FIG. 12 can move horizontally, and the widthwise end of the exterior wall finishing material A1 is brought close to the surface of the support column material B1 on the exterior wall panel A side, and the head 21a of the first bolt 21 is inserted into the groove A3 of the vertical rail material A2. At this time, the head 21a is in a state in which the longitudinal direction is directed vertically as described above. Then, as shown in FIG. 13, the first plate surface 22d of the first plate material 22 is brought into contact with the exterior wall finishing material A1, and the second projections 22e are engaged with each edge of the second lip A4 to prevent the first plate material 22 from shifting horizontally.

[0035] Next, the first nut 23 is tightened and the first bolt 21 is rotated clockwise, but if the axis 21c of the first bolt 21 remains positioned approximately in the center of the width of the vertical rail material A2, the impact wrench will interfere with the sash support column material B3, so the first bolt 21 and the first nut 23 are moved horizontally toward the third metal fitting 4 to widen the gap between the axis 21b of the first bolt 21 and the sash support column material B3. At this time, the first bolt 21 is moved horizontally to a position where the first protrusion 21f can be seen from the confirmation hole 22c, as shown in FIG.

[0036] Next, as shown in Figs. 1 and 2, the first bolt 21 is rotated 90 degrees clockwise so that the shaft portion 21b of the first bolt 21 is positioned closer to the third fitting 4 than the center 21d of the head 21a in the longitudinal direction, and both ends of the head 21a in the longitudinal direction are engaged with the second lips A4. As described above, the shaft center 21c of the first bolt 21 is eccentric from the center 21d of the head 21a in the longitudinal direction, so that the head 21a does not interfere with the groove A3 of the vertical rail material A2 when rotating clockwise. Therefore, the first bolt 21 can be smoothly rotated clockwise, and both ends of the head 21a in the longitudinal direction can be engaged with the second lips A4. Then, the first nut 23 is tightened to clamp the second lip A4 between the head 21a and the first plate material 22, completing the fixing of the exterior wall panel A to the support column material B1.

[0037] As shown in FIG. 14, if the head 21a of the first bolt 21 is oriented in such a way that the first projection 21f cannot be seen through the confirmation hole 22c even when the first bolt 21 is moved horizontally toward the third fitting 4, the head 21a cannot be rotated clockwise because the first projection 21f interferes with the second lip A4 of the vertical rail material A2. In this way, by providing the first projection 21f and the confirmation hole 32b, the first bolt 21 can be oriented in the correct direction, improving workability. In addition, in this embodiment, the case where one end of the exterior wall panel A in the width direction is fixed to the support column material B1 has been described, but when the other end of the exterior wall panel A in the width direction is fixed to the support column support B1, the exterior wall panel fixing bracket 1 can be used by being inverted upside down as shown in FIG. 15.

[0038] The above steps are completed in advance in the factory, and the exterior wall panel A and the framework material C can be transported to the construction site in an integrated state. Although not described in this embodiment, both ends in the height direction of the exterior wall panel A are fixed to a pair of supporting horizontal members B2 using dedicated metal fittings.

[0039] The exterior wall panel A delivered to the construction site has its horizontal position finely adjusted after the frame members C are supported and fixed to the building frame (not shown). That is, the second nut 32 shown in Figs. 1 and 2 is loosened, and the exterior wall panel A to which the second bolt 24 and the first plate member 22 are fixed is moved horizontally along the second insertion hole 31c to adjust the horizontal position of the exterior wall panel A. At this time, since the second plate member 31 has a half-moon-shaped notch 31e formed on the second edge 31d, even if the first plate member 22 is moved toward the third metal fitting 4, the first plate portion 31a does not interfere with the first nut 23, and the position of the exterior wall panel A can be smoothly adjusted. Then, the second nut 32 is tightened again to complete the fine adjustment of the exterior wall panel A in the horizontal direction.

[0040] In this way, the exterior wall panel fixing bracket 1 of the present application can easily connect and fix the exterior wall panel A to the support column material B1 even if the sash support column material B3 partially interferes with the vertical rail material A2 of the exterior wall panel A. Furthermore, since the horizontal position of the exterior wall panel A can be adjusted at the construction site without manipulating the first bolt 21 or the first nut 23, workability can be improved.

[0041] The embodiment of the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the scope of the concept of the present invention. [Industrial Applicability]

[0042] INDUSTRIAL APPLICABILITY The exterior wall panel fixing fitting and the method for fixing an exterior wall panel according to the present invention can be suitably used when fixing a concrete exterior wall panel to a supporting pillar material. [Explanation of symbols]

[0043] 1 Exterior wall panel fixing bracket 2. First metal fitting 21 First Bolt 21a (First bolt) head 21b (First bolt) shaft 21c (First bolt) shaft center 21d Longitudinal centre of head of first bolt 21e Shaft side surface of the head of the first bolt 21f 1st protrusion (protrusion) 21g End surface of the shaft of the first bolt 21h stamp 22 First plate material 22b First insertion hole 22c confirmation hole 23 First Nut 24 Second Bolt 24a (2nd bolt) head 24b (Second bolt) shaft 3. Second metal fitting 31 Second plate material 31c Second insertion hole 32 Second Nut A Exterior wall panel A1 Exterior wall decorative material A1a (Back side of exterior wall decorative material) A2 Vertical rail material A4 2nd lip (vertical rail material lip) B1 Support column material Ba (support column) side L1 Distance of the head of the first bolt in the short direction L2 Longitudinal distance of the head of the first bolt W1 Distance between the lips of the vertical rail W2 Groove width of vertical rail material

Claims

1. An exterior wall panel fixing bracket for fixing an exterior wall panel having a plate-shaped exterior wall finishing material and a lip channel steel-shaped vertical rail material fixed to the back side of the exterior wall finishing material and opening toward the interior of the building to a supporting column material, A first fitting fixed to the vertical rail material; A second metal fitting fixed to a side surface of the support column and the first metal fitting; and a third metal fitting for fixing the second metal fitting to a side surface of the support pole material, the first fitting includes: a first bolt having a long, thin plate-like head and an axis that is eccentric from the center of the head in the longitudinal direction; a first plate material that is fixed to the second fitting, has a first insertion hole through which a shank of the first bolt is inserted, and is movable in a longitudinal direction; and a first nut that is screwed onto the shank of the first bolt protruding from the first insertion hole, The first bolt has a head whose short-side distance is equal to or less than the distance between the lips of the vertical rail material, and whose head whose long-side distance is greater than the distance between the lips of the vertical rail material and equal to or less than the groove width of the vertical rail material, The exterior wall panel fastening fixture is characterized in that the first insertion hole is a long hole extending in the longitudinal direction of the first plate material.

2. The first bolt has a protrusion formed on a surface of a head portion on a shaft portion side, The exterior wall panel fixing bracket described in claim 1, characterized in that the first plate material has an inspection hole that makes the protrusion visible when the first bolt moves in the longitudinal direction of the first plate material toward the third bracket with the longitudinal direction of the head of the first bolt facing the short side of the first plate material.

3. The first bolt has a linear marking formed on a tip surface of a shaft portion, 3. The exterior wall panel fastening bracket according to claim 1, wherein the marking has a straight line extending in the same direction as the longitudinal direction of the head of the first bolt.

4. the first fitting has a second bolt having a head fixed to the first plate material and a shaft protruding in the same direction as the shaft of the first bolt, the second fitting is fixed to a side surface of the support column material, and includes an L-shaped second plate material having a second insertion hole through which a shank of the second bolt is inserted, and a second nut screwed onto the shank of the second bolt protruding from the second insertion hole, an edge of the second plate material opposite to the third fitting is located closer to the third fitting than the first nut, 4. The fastening metal fitting for an exterior wall panel according to claim 1, wherein the second insertion hole is an elongated hole extending in the longitudinal direction of the first plate material.

5. 5. The fixing bracket for an exterior wall panel according to claim 4, characterized in that the second plate material has a semicircular cut-out at an end edge opposite to the third fitting, the portion being adjacent to the first nut when the first plate material is moved in the longitudinal direction of the first plate material toward the third fitting.

6. A method for fixing an exterior wall panel, comprising: a plate-shaped exterior wall finishing material; and a lip channel steel-shaped vertical rail material that is fixed to the back side of the exterior wall finishing material and opens toward the interior of the building, to a supporting column material, using the exterior wall panel fixing metal fitting according to any one of claims 1 to 5, The second metal fitting is fixed to a side surface of the support column material by the third metal fitting; The head of the first bolt is inserted into the groove of the vertical rail material to bring the first plate material into contact with the rear surface of the exterior wall finishing material; The first bolt is moved in a longitudinal direction of the first plate material toward the third metal fitting and rotated so that the longitudinal direction of the head of the first bolt extends to the opposite side to the third metal fitting; After the head of the first bolt is engaged with the lip of the vertical rail material and the first nut is tightened, A method for fixing an exterior wall panel, comprising adjusting the longitudinal position of the first plate material.

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