Exterior wall panel mounting aids and exterior wall panel mounting structures

Abstract

To provide an exterior wall panel mounting aid that allows exterior wall panels to be easily locked into place. [Solution] An exterior wall panel mounting aid 4 according to one embodiment includes a plate-shaped main body portion 41 that makes surface contact with the vertical plate portion 21 of the base angle 2, an upper clamping piece 42 and a lower clamping piece 43 that protrude from the main body portion 41 upward and downward toward the base angle 2 and clamp the base angle 2 from above and below, and a spacer portion 44 that protrudes from the main body portion 41 in the opposite direction to the base angle 2 and contacts the exterior wall panel 3. The length of the upper clamping piece 42 in the thickness direction of the main body portion 41 is less than or equal to the thickness of the vertical plate portion 21 of the base angle 2.

Description

Technical Field

[0001] This application relates to an auxiliary tool for attaching an outer wall panel disposed between a foundation angle of a building structure and a lower part of a vertically-stretched outer wall panel, and an outer wall panel attachment structure including the auxiliary tool for attaching an outer wall panel.

Background Art

[0002] In building structures, dry outer wall panels such as extruded cement boards and lightweight foam concrete boards are widely used due to requirements such as weight reduction of the building structure frame and construction efficiency improvement. As for the method of installing the outer wall panel, there are vertical stretching and horizontal stretching. In either case, the outer wall panel is attached to the building structure frame using mounting brackets. For example, the mounting brackets are attached to the four corners of the outer wall panel.

[0003] In the case of a vertically-stretched outer wall panel, a foundation angle extending horizontally is attached to the building structure frame. As a mounting bracket for the outer wall panel, a Z-clip that presses the vertical plate portion of the foundation angle toward the outer wall panel is used. Also, since a gap for position adjustment is formed between the outer wall panel and the foundation angle, an auxiliary tool for attaching an outer wall panel is disposed between the outer wall panel and the foundation angle at a position overlapping the mounting bracket.

[0004] For example, Patent Document 1 discloses an auxiliary tool for attaching an outer wall panel having a function of preventing rotation of a mounting bracket for an outer wall panel. This auxiliary tool for attaching an outer wall panel is attached to a foundation angle whose horizontal plate portion protrudes from the lower end of the vertical plate portion toward the indoor side.

[0005] Specifically, the auxiliary tool for attaching an outer wall panel of Patent Document 1 includes a plate-shaped main body portion that is in surface contact with the outer wall panel, a spacer portion that protrudes from the main body portion so as to be separated from the outer wall panel and contacts the vertical plate portion of the foundation angle, and two upper clamping pieces and two lower clamping pieces provided at both ends of the upper side and the lower side of the main body portion.

[0006] The upper and lower clamping pieces protrude from the main body upward and downward toward the base angle, clamping the base angle from above and below. Furthermore, both upper clamping pieces have rotation-preventing parts that hang down opposite the main body so as to face the vertical plate portion of the base angle. These rotation-preventing parts are located on both sides of the mounting bracket for the exterior wall panel, thereby preventing the mounting bracket from rotating. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2017-043954 [Patent Document 2] Japanese Patent Publication No. 2023-012389 [Overview of the project] [Problems that the invention aims to solve]

[0008] Incidentally, with vertically installed exterior wall panels, it is unlikely that the lower mounting brackets will rotate and detach from the underlying angle. Furthermore, as described in Patent Document 2, vertically installed exterior wall panels can be attached to the building structure in a rocking manner. This allows the exterior wall panels to rock and follow the inter-story displacement of the building structure when inter-story displacement occurs in the building structure due to an earthquake or other event, thereby avoiding damage. Rocking refers to the oscillation of the exterior wall panel with the lower center in the width direction as the pivot point.

[0009] As described above, the exterior wall panel mounting aid described in Patent Document 1, which is attached to the base angle, has a main body that makes surface contact with the exterior wall panel, resulting in a large frictional force between the exterior wall panel and the exterior wall panel mounting aid. For this reason, it is desirable to configure the exterior wall panel mounting aid in a way that facilitates the locking of the exterior wall panel.

[0010] Therefore, the purpose of this application is to provide an exterior wall panel mounting aid that can easily lock exterior wall panels, and an exterior wall panel mounting structure including the exterior wall panel mounting aid. [Means for solving the problem]

[0011] In a first aspect, the present application provides an exterior wall panel mounting aid that is positioned between a base angle of a building structure and the lower part of a vertically installed exterior wall panel, comprising: a plate-shaped main body that makes surface contact with the vertical plate portion of the base angle; an upper clamping piece and a lower clamping piece that protrude from the main body upward and downward toward the base angle and clamp the base angle from above and below; and a spacer portion that protrudes from the main body in the opposite direction to the base angle and contacts the exterior wall panel.

[0012] With the above configuration, the main body makes surface contact with the vertical plate portion of the base angle, and the spacer portion makes contact with the exterior wall panel, thus reducing the frictional force between the exterior wall panel and the exterior wall panel mounting aid. Therefore, it is possible to easily lock the exterior wall panel into place.

[0013] In a second embodiment, in the first embodiment, the length of the upper clamping piece in the thickness direction of the main body may be less than or equal to the thickness of the vertical plate portion of the base angle. With this configuration, since the length of the upper clamping piece of the exterior wall panel mounting aid is less than or equal to the thickness of the vertical plate portion of the base angle, the amount of material required is small, and the exterior wall panel mounting aid can be manufactured at low cost.

[0014] In a third embodiment, in the second embodiment, the upper clamping piece may have a shape that engages with the upper end of the vertical plate portion of the base angle, and the lower clamping piece may have a shape that engages with the lower end of the vertical plate portion or the horizontal plate portion of the base angle. With this configuration, when the exterior wall panel mounting aid is attached to the base angle, the mounting state can be maintained by the self-holding of the exterior wall panel mounting aid.

[0015] In a fourth embodiment, in any of the first to third embodiments, the exterior wall panel mounting aid is interposed between the base angle and the exterior wall panel at a position overlapping with the mounting bracket of the exterior wall panel, the upper clamping piece and the lower clamping piece are provided at both ends of the upper and lower edges of the main body, and the distance between the upper clamping pieces may be greater than the width of the mounting bracket. With this configuration, after the mounting bracket of the exterior wall panel is locked to the base angle, and before tightening the fixing bolts for the mounting bracket, the position of the exterior wall panel mounting aid can be adjusted so that the mounting bracket of the exterior wall panel fits between the upper clamping pieces, thereby making it easy to position the exterior wall panel mounting aid.

[0016] In a fifth aspect, the present application provides an exterior wall panel mounting structure comprising: vertically installed exterior wall panels; a horizontally extending base angle including a vertical plate portion and a horizontal plate portion projecting inward from the lower end of the vertical plate portion; a weight support bracket fixed to the base angle and supporting the exterior panel at the center in the width direction of the exterior wall panel; mounting brackets attached to the lower part of the exterior wall panel on both sides of the weight support bracket and pressing the vertical plate portion of the base angle toward the exterior wall panel; and an exterior wall panel mounting auxiliary device of any of the first to fourth aspects interposed between the base angle and the exterior wall panel at a position overlapping with the mounting bracket. With this configuration, even if inter-story displacement occurs in the building structure, damage to the exterior wall panel mounting auxiliary device and detachment from the base angle due to rocking of the exterior wall panel can be prevented, thereby improving the reliability of the exterior wall panel mounting. [Effects of the Invention]

[0017] According to this application, an exterior wall panel mounting aid capable of easily locking exterior wall panels, and an exterior wall panel mounting structure including the exterior wall panel mounting aid are provided. [Brief explanation of the drawing]

[0018] [Figure 1] This is a plan view of an exterior wall panel mounting structure including an exterior wall panel mounting aid according to one embodiment. [Figure 2] It is a front view seen from the indoor side of the outer wall panel mounting structure. [Figure 3] It is a cross-sectional view taken along the line III-III of FIG. 2. [Figure 4] (a) is a perspective view of the outer wall panel mounting auxiliary tool seen from the front side, and (b) is a perspective view of the outer wall panel mounting auxiliary tool seen from the back side. [Figure 5] It is a side view of the outer wall panel mounting auxiliary tool. [Figure 6] It is a perspective view of the weight receiving fitting. [Figure 7] (a) and (b) are schematic views showing the states before and after inter-story displacement occurs in the building structure. [Figure 8] (a) to (e) are side views of the outer wall panel mounting auxiliary tool of the modified example. [Figure 9] (a) to (e) are side views of the outer wall panel mounting auxiliary tool of the modified example.

Mode for Carrying Out the Invention

[0019] In FIGS. 1 and 2, an outer wall panel mounting structure 1 including an outer wall panel mounting auxiliary tool 4 is shown in one embodiment. The outer wall panel mounting structure 1 includes a vertically extending outer wall panel 3 that is long in the vertical direction, and a base angle 2 that extends horizontally at a position corresponding to the lower part of the outer wall panel 3. The outer wall panel mounting auxiliary tool 4 is disposed between the base angle 2 and the lower part of the outer wall panel 3.

[0020] As shown in FIG. 3, the base angle 2 includes a vertical plate portion 21 and a horizontal plate portion 22 that protrudes from the lower end of the vertical plate portion 21 toward the indoor side. The base angle 2 is attached to a beam constituting the frame 11 of the building structure 10 via a fixing plate 12. The fixing plate 12 is welded to the beam, and the base angle 2 is welded to the fixing plate 12. In FIGS. 1 and 2, for the sake of simplifying the drawing, the drawing of the building structure 10 and the frame 11 is omitted.

[0021] Furthermore, the exterior wall panel mounting structure 1 includes a weight-bearing bracket 8 fixed by welding to the vertical plate portion 21 of the base angle 2, and mounting brackets 5 attached to the lower part of the exterior wall panel 3 on both sides of the weight-bearing bracket 8. The exterior wall panel mounting auxiliary device 4 is interposed between the base angle 2 and the exterior wall panel 3 at a position overlapping with the mounting brackets 5.

[0022] The weight-bearing bracket 8 supports the exterior wall panel 3 at its center in the width direction. As shown in Figure 6, the weight-bearing bracket 8 includes a vertical portion 81 that makes surface contact with the vertical plate portion 21 of the base angle 2, and a horizontal portion 82 that protrudes from the lower end of the vertical portion 81 in the opposite direction to the base angle 2. A welding notch 83 is formed in the upper center of the vertical portion 81, and the exterior wall panel 3 is placed on the horizontal portion 82.

[0023] As shown in Figure 1, in this embodiment, the exterior wall panel 3 is a hollow extruded cement board in which an outer plate-like portion and an inner plate-like portion are connected by a plurality of partition walls. However, the exterior wall panel 3 may also be a lightweight aerated concrete board or the like. The spaces between the outer plate-like portions and the spaces between the inner plate-like portions of adjacent exterior wall panels 3 in the left-right direction are sealed with sealants 31 and 32, and the spaces between adjacent exterior wall panels 3 in the up-down direction are sealed with sealant 33 as shown in Figure 3.

[0024] Furthermore, in this embodiment, the mounting bracket 5 is a Z-clip that presses the vertical plate portion 21 of the base angle 2 toward the exterior wall panel 3. More specifically, as shown in Figure 3, the mounting bracket 5 includes a pressing portion 51 that makes surface contact with the vertical plate portion 21 of the base angle 2, a fixing portion 53 that makes surface contact with the exterior wall panel 3 above the pressing portion 51, and a connecting portion 52 that connects the lower end of the fixing portion 53 and the upper end of the pressing portion 51.

[0025] The fixing portion 53 of the mounting bracket 5 and the inner plate-shaped portion of the exterior wall panel 3 are provided with through-holes for fixing bolts 7. When the fixing bolts 7 are fastened to plate-shaped nuts 6 located inside the exterior wall panel 3, the mounting bracket 5 is fixed to the exterior wall panel 3 with the vertical plate portion 21 of the base angle 2 and the exterior wall panel mounting aid 4 sandwiched between the pressing portion 51 of the mounting bracket 5 and the exterior wall panel 3.

[0026] As shown in Figures 4(a) and (b) and Figure 5, the exterior wall panel mounting aid 4 includes a plate-shaped main body 41 that makes surface contact with the vertical plate portion 21 of the base angle 2, and two upper clamping pieces 42 and two lower clamping pieces 43 provided at both ends of the upper and lower edges of the main body 41. For example, the width of the main body 41 is 1.5 times or more and 2.5 times or less the width of the mounting bracket 5.

[0027] The upper clamping piece 42 and the lower clamping piece 43 protrude from the main body 41 upward and downward toward the base angle 2, and clamp the base angle 2 from above and below. In this embodiment, the distance between the upper clamping pieces 42 is slightly greater than the width of the mounting bracket 5.

[0028] The length of the upper clamping piece 42 in the thickness direction of the main body 41 is less than or equal to the thickness of the vertical plate portion 21 of the base angle 2. For example, the length of the upper clamping piece 42 is 80% to 100% of the thickness of the vertical plate portion 21. In this embodiment, the length of the lower clamping piece 43 is approximately the same as the length of the upper clamping piece 42.

[0029] Furthermore, in this embodiment, the upper clamping piece 42 is shaped to engage with the upper end of the vertical plate portion 21 of the base angle 2, and the lower clamping piece 43 is shaped to engage with the lower end of the vertical plate portion 21 of the base angle 2. Therefore, when the exterior wall panel mounting aid 4 is attached to the base angle 2, the mounting state can be maintained by the self-holding of the exterior wall panel mounting aid 4.

[0030] More specifically, the upper clamping piece 42 is curved so as to be convex downwards and engages with the rounded corner portion at the upper end of the vertical plate portion 21 of the base angle 2. On the other hand, the lower clamping piece 43 bends vertically from the main body portion 41, and a boss 45 is provided on the upper surface of the lower clamping piece 43. The distance between the base of the lower clamping piece 43 and the base of the upper clamping piece 42 is equal to the height of the base angle 2.

[0031] The exterior wall panel mounting aid 4 also includes a pair of left and right spacer portions 44 that protrude from the main body portion 41 in the opposite direction to the base angle 2 and contact the exterior wall panel 3. Each spacer portion 44 includes a contact portion 44b that makes surface contact with the exterior wall panel 3, an upper inclined portion 44a that extends diagonally upward from the upper end of the contact portion 44b to the main body portion 41, and a lower inclined portion 44c that extends diagonally downward from the lower end of the contact portion 44b to the main body portion 41.

[0032] An exterior wall panel mounting aid 4 of this shape can be manufactured by press-forming a flat metal plate in the unfolded shape of the exterior wall panel mounting aid 4.

[0033] As described above, in the exterior wall panel mounting aid 4 of this embodiment, the main body portion 41 makes surface contact with the vertical plate portion 21 of the base angle 2, and the spacer portion 44 makes contact with the exterior wall panel 3, so that the frictional force between the exterior wall panel 3 and the exterior wall panel mounting aid 4 can be reduced. Therefore, as shown in Figures 7(a) and (b), the exterior wall panel 3 can be easily locked in place.

[0034] Furthermore, since the length of the upper clamping piece 42 of the exterior wall panel mounting aid 4 is less than or equal to the thickness of the vertical plate portion 21 of the base angle 2, the amount of material required is small, and the exterior wall panel mounting aid 4 can be manufactured at a low cost.

[0035] Furthermore, the fact that the length of the upper clamping piece 42 of the exterior wall panel mounting aid 4 is less than or equal to the thickness of the vertical plate portion 21 of the base angle 2 has the effect of avoiding interference between the mounting bracket 5 and the exterior wall panel mounting aid 4, even if the relative positional relationship between the mounting bracket 5 and the exterior wall panel mounting aid 4 shifts due to the rocking of the exterior wall panel 3.

[0036] Furthermore, with the exterior wall panel mounting structure 1 including the exterior wall panel mounting aid 4 and the weight support bracket 8, even if inter-story displacement occurs in the building structure 10, damage to the exterior wall panel mounting aid 4 and detachment from the base angle 2 due to rocking of the exterior wall panel 3 can be prevented, thereby improving the reliability of the installation of the exterior wall panel 3.

[0037] Furthermore, in this embodiment, since the distance between the upper clamping pieces 42 is greater than the width of the mounting bracket 5, the position of the exterior wall panel mounting aid 4 can be easily adjusted by adjusting the position of the exterior wall panel mounting aid 4 so that the mounting bracket 5 fits between the upper clamping pieces 42 after the mounting bracket 5 has been secured to the base angle 2 and before the fixing bolts 7 for the mounting bracket 5 are tightened.

[0038] <Variation> The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.

[0039] For example, as shown in Figure 8(a) in the first modified example, the exterior wall panel mounting aid 4A may have an increased length of the lower clamping piece 43, and the lower clamping piece 43 may have a shape that locks into the horizontal plate portion 22 of the base angle 2.

[0040] Furthermore, as shown in Figure 8(b) in the second modified example, the exterior wall panel mounting aid 4B, the lower clamping piece 43 may be curved so as to be convex upward.

[0041] Furthermore, as shown in the third modified example of the exterior wall panel mounting aid 4C in Figure 8(c), the upper clamping piece 42 does not necessarily have to be bent vertically from the main body 41 and engage with the upper end of the vertical plate portion 21 of the base angle 2.

[0042] Alternatively, as shown in the fourth modified example, the exterior wall panel mounting aid 4D in Figure 8(d), the lower clamping piece 43 does not need to be bent vertically from the main body 41 as well as the upper clamping piece 42, and does not need to have a shape that engages with the lower end of the vertical plate portion 21 or the horizontal plate portion 22 of the base angle 2.

[0043] If the upper clamping piece 42 does not engage with the base angle 2, the lower clamping piece 43 may be curved so as to be convex upward, as in the fifth modified example exterior wall panel mounting aid 4E shown in Figure 8(e), or the length of the lower clamping piece 43 with the boss 45 may be shorter, as in the sixth modified example exterior wall panel mounting aid 4F shown in Figure 9(a).

[0044] If neither the upper clamping piece 42 nor the lower clamping piece 43 engages with the base angle 2, the main body 41 may be joined to the vertical plate portion 21 of the base angle 2 by a bonding agent 46, as shown in the seventh modified example exterior wall panel mounting aid 4G in Figure 9(b). For example, the bonding agent 46 may be an adhesive or double-sided tape.

[0045] Furthermore, as shown in the eighth modified example, the exterior wall panel mounting aid 4H in Figure 9(c), the upper clamping piece 42 may be bent vertically from the main body 41, and a boss 47 may be provided on the lower surface of the upper clamping piece 42.

[0046] Furthermore, as shown in the ninth modified example, the exterior wall panel mounting aid 4I in Figure 9(d), the shape in which the upper clamping piece 42 engages with the upper end of the vertical plate portion 21 of the base angle 2 may also be such that the upper clamping piece 42 extends diagonally downward from the upper edge of the main body portion 41.

[0047] Similarly, the shape in which the lower clamping piece 43 engages with the lower end of the vertical plate portion 21 of the base angle 2 may be such that the lower clamping piece 43 extends diagonally upward from the lower edge of the main body portion 41, as shown in the tenth modified example, the exterior wall panel mounting aid 4J, in Figure 9(e).

[0048] Furthermore, the number of upper clamping pieces 42 and lower clamping pieces 43 does not necessarily have to be two each; there may be one of each.

[0049] The length of the upper clamping piece 42 in the thickness direction of the main body 41 does not necessarily have to be less than or equal to the thickness of the vertical plate portion 21 of the base angle 2. For example, the length of the upper clamping piece 42 may be set to be greater than the thickness of the vertical plate portion 21 of the base angle 2, so that the upper clamping pieces 42 located on both sides of the mounting bracket 5, which is a Z-clip, prevent the mounting bracket 5 from rotating. [Explanation of Symbols]

[0050] 1. Exterior wall panel mounting structure 10 Building structures 2. Base angle 21 Vertical board section 22 Horizontal plate part 3. Exterior wall panels 4,4A~4J Exterior wall panel mounting aid 41 Main body 42 Upper clamping piece 43 Lower clamping piece 44 Spacer section 5. Mounting bracket 8. Weight support bracket

Claims

1. An exterior wall panel mounting aid that is positioned between the base angle of a building structure and the lower part of a vertically installed exterior wall panel, A plate-shaped main body portion that makes surface contact with the vertical plate portion of the aforementioned base angle, The upper and lower clamping pieces protrude from the main body upward and downward, respectively, and clamp the base angle from above and below, A spacer portion protrudes from the main body in the opposite direction to the base angle and contacts the exterior wall panel, An auxiliary tool for attaching exterior wall panels.

2. The exterior wall panel mounting aid according to claim 1, wherein the length of the upper clamping piece in the thickness direction of the main body is less than or equal to the thickness of the vertical plate portion of the base angle.

3. The upper clamping piece has a shape that locks onto the upper end of the vertical plate portion of the base angle, The exterior wall panel mounting aid according to claim 2, wherein the lower clamping piece has a shape that engages with the lower end or horizontal portion of the vertical plate portion of the base angle.

4. The aforementioned exterior wall panel mounting aid is interposed between the base angle and the exterior wall panel at a position that overlaps with the mounting bracket of the exterior wall panel. The upper clamping piece and the lower clamping piece are provided at both ends of the upper and lower edges of the main body. The exterior wall panel mounting aid according to any one of claims 1 to 3, wherein the distance between the upper clamping pieces is greater than the width of the mounting bracket.

5. Vertically installed exterior wall panels, A base angle extending horizontally, including a vertical plate portion and a horizontal plate portion protruding inward from the lower end of the vertical plate portion, A weight-bearing bracket fixed to the aforementioned base angle supports the outer wall panel at the center in the width direction of the outer wall panel, Mounting brackets are attached to the lower part of the exterior wall panel on both sides of the weight support bracket, and press the vertical plate portion of the base angle toward the exterior wall panel, An exterior wall panel mounting aid according to any one of claims 1 to 3, interposed between the base angle and the exterior wall panel at a position overlapping with the aforementioned mounting bracket, An exterior wall panel mounting structure equipped with this feature.

Images