Frame material mounting structure

Abstract

This method ensures the mounting strength of the frame material without complicating the process of attaching anchor members to the frame material. [Solution] An anchor member 50 is attached to the lower frame 42, and the lower frame 42 is attached to the building structure B via the anchor member 50. The lower frame 42 is provided with an indoor-side lower claw portion 42b and an outdoor-side lower claw portion 42b that extend toward each other. The anchor member 50 comprises an inner circumferential bracket 51 that engages with the outdoor-side lower claw portion 42b and an auxiliary bracket 52 that engages with the indoor-side lower claw portion 42b and is connected to the inner circumferential bracket 51.

Description

Technical Field

[0001] The present invention relates to a frame member mounting structure for mounting a frame member to a building body via an anchor member.

Background Art

[0002] Some fixtures are configured to attach a frame member constituting a frame body to a building body via an anchor member. In particular, for buildings equipped with a concrete building body such as a building, a mounting structure using an anchor member is often used. In this type of mounting structure, outdoor claw portions and indoor claw portions are provided on the frame member, locking portions are provided on both side edges of the anchor member, and the claw portions are inserted into and locked to the locking portions respectively, so that the anchor member is in a state of being attached to the frame member (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the locking portion of the anchor member is formed to have a width larger than the mutual interval of the claw portions. Therefore, the operation of inserting the claw portions into the locking portion of the anchor member is not always easy. Conventionally, after arranging the anchor member between the claw portions, the anchor member is rotated by 90° so that the respective claw portions are locked to the two locking portions. However, in this mounting structure, the width of the anchor member is limited to a dimension shorter than the mutual interval of the claw portions. For this reason, in a situation where a large mounting strength is required for the frame member, a large number of anchor members are required, which may lead to a complicated operation. In particular, in the case of dry construction where mortar is not filled between the frame member and the building body, the above problems become more prominent.

[0005] In view of the above circumstances, the present invention aims to provide a frame mounting structure that can ensure the mounting strength of the frame material without complicating the work of attaching anchor members to the frame material. [Means for solving the problem]

[0006] To achieve the above objective, the frame mounting structure according to the present invention is a frame mounting structure that attaches an anchor member to a frame member and attaches the frame member to a building structure via the anchor member, wherein the frame member is provided with an indoor claw portion and an outdoor claw portion extending in directions toward each other, and the anchor member comprises a first anchor bracket that engages with one of the claw portions and a second anchor bracket that engages with the other claw portion and is connected to the first anchor bracket. [Effects of the Invention]

[0007] According to the present invention, since the first anchor bracket that engages with one claw portion and the second anchor bracket that engages with the other claw portion are configured separately, the operation of engaging the first anchor bracket with the claw portion and the operation of engaging the second anchor bracket with the claw portion can be performed individually, thereby simplifying the work. Moreover, since the dimensions of the anchor members are not restricted, sufficient mounting strength of the frame can be ensured without providing a large number of anchor members. [Brief explanation of the drawing]

[0008] [Figure 1] This is a vertical cross-sectional view of a joinery piece to which the frame mounting structure of Embodiment 1 of the present invention is applied. [Figure 2] Figure 1 is a cross-sectional view of the main part of the joinery. [Figure 3] Figure 1 shows the anchor members used for the lower frame of the door or window. (a) is a perspective view from the interior side with the anchor base omitted, and (b) is a perspective view from the exterior side with the anchor base omitted. [Figure 4]Figure 1 shows the anchor members used for the lower frame of the door or window, with (a) being a perspective view from the interior and (b) being a perspective view from the exterior. [Figure 5] Figure 1 shows the anchor member used for the lower frame of the door / window, viewed from the interior side. [Figure 6] This is a view of the anchor member used in the lower frame of the door / window shown in Figure 1, seen from the inner side. [Figure 7-1] Figure 1 shows a vertical cross-sectional view of the joinery with anchor bases attached to the upper and lower edges of the opening in the building structure. [Figure 7-2] Figure 1 is a cross-sectional view of the main part of the joinery shown, with the anchor base attached to the side edge of the opening in the building structure. [Figure 8-1] Figure 7-1 is a vertical cross-sectional view showing the frame positioned in the opening of the building structure. [Figure 8-2] Figure 7-2 is a cross-sectional view of the main part of the structure with the frame positioned in the opening of the structure. [Figure 9-1] This is a vertical cross-sectional view showing the frame with the inner perimeter bracket attached, as shown in Figure 8-1. [Figure 9-2] This is a cross-sectional view of the main part of the frame, showing the state in which the inner circumferential bracket has been attached to the frame, as shown in Figure 8-2. [Figure 10-1] This is a longitudinal cross-sectional view showing the state after attaching the auxiliary bracket to the inner circumferential bracket, as shown in Figure 9-1. [Figure 10-2] This is a cross-sectional view of the main part showing the state after attaching the auxiliary bracket to the inner circumferential bracket, as shown in Figure 9-2. [Figure 11] This is a vertical cross-sectional view of a joinery piece to which the frame mounting structure, which is Embodiment 2 of the present invention, is applied. [Figure 12] Figure 11 is a cross-sectional view of the main part of the joinery. [Figure 13] Figure 11 shows the anchor members used for the upper frame of the joinery; (a) is a perspective view from the interior with the anchor base omitted, and (b) is a perspective view from the exterior with the anchor base omitted. [Figure 14]This shows an anchor member used for the upper frame of a fitting shown in Fig. 11. (a) is a perspective view seen from the indoor side, and (b) is a perspective view seen from the outdoor side. [Figure 15] This is a view of the anchor member used for the upper frame of the fitting shown in Fig. 11 seen from the indoor side. [Figure 16] This shows an anchor member used for the lower frame of the fitting shown in Fig. 11. (a) is a perspective view seen from the indoor side with the anchor base omitted, and (b) is a perspective view seen from the outdoor side with the anchor base omitted. [Figure 17] This shows an anchor member used for the lower frame of the fitting shown in Fig. 11. (a) is a perspective view seen from the indoor side, and (b) is a perspective view seen from the outdoor side. [Figure 18] This is a view of the anchor member used for the lower frame of the fitting shown in Fig. 11 seen from the indoor side. [Figure 19] This is a longitudinal sectional view of the fitting shown in Fig. 11 in a state where an upper inner peripheral bracket is attached to the upper frame and a lower inner peripheral bracket is attached to the lower frame. [Figure 20] This is a longitudinal sectional view of the fitting shown in Fig. 11 in a state where an upper auxiliary bracket is arranged on the upper inner peripheral bracket attached to the upper frame and a lower auxiliary bracket is arranged on the lower inner peripheral bracket attached to the lower frame. [Figure 21] This is a longitudinal sectional view of the state where an upper anchor base is attached to the upper inner peripheral bracket from the state shown in Fig. 20. [Figure 22] This is a longitudinal sectional view of the state where the frame body shown in Fig. 21 is arranged in the opening of the building body. [Figure 23] This is a longitudinal sectional view of the state where a lower anchor base is attached to the lower inner peripheral bracket in the state shown in Fig. 22. [Figure 24] This is a longitudinal sectional view of the state where the anchor members shown in Fig. 23 are respectively connected to the building body. <00°0099> [Figure 25] This is a longitudinal sectional view of a fitting to which the frame member mounting structure according to Embodiment 3 of the present invention is applied. [Figure 26] This is a cross-sectional view of the main part of the fitting shown in Fig. 25. [Figure 27]Figure 25 shows the anchor members used for the lower frame of the joinery; (a) is a perspective view from the outside with the anchor base omitted, and (b) is a perspective view from the outside at a different angle with the anchor base omitted. [Figure 28] Figure 25 shows the anchor members used for the lower frame of the door or window, with (a) being a perspective view from the interior and (b) being a perspective view from the exterior. [Figure 29] Figure 25 shows the anchor member used for the lower frame of the door / window, viewed from the interior side. [Modes for carrying out the invention]

[0009] Hereinafter, preferred embodiments of the frame mounting structure according to the present invention will be described in detail with reference to the attached drawings. For convenience, the terms "depth direction" and "face direction" may be used below. The depth direction is the direction along the depth of the frame mounting structure, as indicated by arrow A in the figure. The surface along the depth direction may be referred to as the depth surface. The face direction is the direction along the vertical direction perpendicular to the depth direction, in the case of a frame that extends horizontally, such as a lower frame. In the case of a frame that extends vertically, such as a vertical frame, the face direction is the direction along the horizontal direction perpendicular to the depth direction. The surface along the face direction may be referred to as the face surface.

[0010] (Embodiment 1) Figures 1 and 2 show a window to which the frame mounting structure of Embodiment 1 of the present invention is applied. The window shown here is called a fixed window, in which a panel 1C such as double-glazed glass is fitted into a frame 40, and the frame 40 is attached to a concrete structure B such as a building. The frame 40 is constructed by assembling an upper frame (frame material) 41, a lower frame (frame material) 42, and left and right vertical frames (frame materials) 43 around the perimeter. The upper frame 41, lower frame 42, and vertical frames 43 are extruded profiles formed from metal such as aluminum alloy, and each is configured to have a substantially uniform cross-sectional shape along its length.

[0011] The upper frame 41 has an upper frame body 41a that extends almost horizontally along the depth direction, and upper claw portions (claws) 41b provided on the outer circumference of the upper frame body 41a, on the outdoor side and on the indoor side, respectively. The upper claw portion 41b on the outdoor side extends inward from the outer circumference of the upper outer visible fin portion 41c provided on the outdoor edge of the upper frame body 41a. The upper claw portion 41b on the indoor side extends outward from the outer circumference of the upper inner visible fin portion 41d provided on the indoor edge of the upper frame body 41a. As is clear from the figure, the upper claw portions 41b are provided in positions opposite to each other, and their outer surfaces are located on almost the same horizontal plane. A trim 41f is attached to the inner circumference of the upper frame body 41a via an upper trim mounting portion 41e. The trim strip 41f extends in the visible direction from the part of the upper frame body 41a that is closer to the interior side toward the inner circumference.

[0012] The lower frame 42 has a lower frame body 42a and lower claw portions (claw portions) 42b provided on the outer circumference of the lower frame body 42a, on the outer-facing side and on the inner-facing side. The lower frame body 42a extends almost horizontally from the inner edge toward the outside, then gradually slopes downward toward the outside, and further extends almost horizontally toward the outside. The outer edge of the lower frame body 42a is provided with a lower outer visible fin portion 42c, and the outer circumference of the lower frame body 42a, on the outer-facing side, is provided with a drain portion 42d. The lower outer visible fin portion 42c extends toward the inner circumference in the visible direction. The drain portion 42d extends toward the outer circumference in the visible direction, then gradually slopes toward the outer circumference toward the outside, and further extends toward the outer circumference. The sloped portion of the drain portion 42d is provided with a screw hole 42e on the outer circumference. The lower claw portion 42b on the exterior side extends inward from the outer edge of the screw hole 42e. The lower claw portion 42b on the interior side extends outward from the outer edge of the lower inward visible fin portion 42f provided on the interior edge of the lower frame body 42a. The lower claw portion 42b on the exterior side is located further outward than the lower claw portion 42b on the interior side. An inward panel support fin portion 42g is provided on the inner circumference side of the lower inward visible fin portion 42f so as to be almost horizontal toward the exterior.

[0013] The left and right vertical frames 43, although not explicitly shown in the figure, are symmetrical in shape and are configured to have almost the same cross-sectional shape as the upper frame 41. That is, the vertical frame 43 of Embodiment 1 has a vertical frame body 43a, a lateral claw portion (claw portion) 43b, a lateral fin portion 43c, an upper fin portion 43d, and a lateral trim mounting portion 43e, corresponding to the upper frame body 41a, upper claw portion 41b, upper outer visible fin portion 41c, upper inner visible fin portion 41d, and upper trim mounting portion 41e of the upper frame 41. A trim 43f is attached to the lateral trim mounting portion 43e so as to extend toward the inner circumference.

[0014] The anchor members 50 for attaching the upper frame 41, lower frame 42, and vertical frame 43 to the building structure B have a nearly identical configuration around all four sides, and consist of an inner circumferential bracket (first anchor bracket) 51, an auxiliary bracket (second anchor bracket) 52, and an anchor base 53. The inner circumferential bracket 51, auxiliary bracket 52, and anchor base 53 are formed separately from each other from metal such as aluminum alloy or steel. Hereinafter, the anchor members 50 applied to the lower frame 42 will be described as representative, with reference to Figures 3 to 6, and the anchor members 50 applied to the upper frame 41 and vertical frame 43 will be described in detail, with the corresponding components being denoted by the same reference numerals. For convenience, in Figures 3 to 6, the auxiliary bracket 52 and anchor base 53 are marked with dots.

[0015] The inner circumferential bracket 51 has a base plate portion (locking portion) 51a, a locking plate portion (locking portion) 51b, a contact plate portion (contact support portion) 51c, two projection plate portions 51d, an outer facing plate portion (facing plate portion) 51e, and an inner facing plate portion (facing plate portion) 51f. The base plate portion 51a is a flat plate that extends substantially horizontally along the projection direction. The locking plate portion 51b is inclined from a part of the outdoor edge of the base plate portion 51a so as to gradually move inward toward the outside, and then extends substantially horizontally toward the outside. A gap is secured between the locking plate portion 51b and the base plate portion 51a so as to allow the lower claw portion 42b on the outdoor side to be clamped. The contact plate portion 51c is inclined from the entire indoor edge of the base plate portion 51a so as to gradually move inward toward the inside, and then extends substantially horizontally toward the inside. The dimensions of the base plate portion 51a, the locking plate portion 51b, and the contact plate portion 51c are set such that when the lower claw portion 42b on the outdoor side is inserted between the locking plate portion 51b and the base plate portion 51a, the lower claw portion 42b on the indoor side can contact the contact plate portion 51c. The two facing plate portions 51d each form a flat plate shape extending outward from the side edge of the base plate portion 51a. The outer facing plate portion 51e forms a flat plate shape extending in the facing direction from the outdoor edge of one of the facing plate portions 51d. Screw holes 51g are provided in the outer peripheral portion of the outer facing plate portion 51e. The inner facing plate portion 51f forms a flat plate shape extending in the facing direction from the indoor edge of the other facing plate portion 51d. In this embodiment 1, the outer facing plate portion 51e and the inner facing plate portion 51f extend in directions away from each other. A screw insertion hole (mounting portion) 51h is provided in the outer peripheral portion of the inner facing plate portion 51f.

[0016] The auxiliary bracket 52 has an auxiliary base plate portion (face plate portion) 52a which is flat in the direction of visibility, an auxiliary locking plate portion 52b provided on the inner circumference edge of the auxiliary base plate portion 52a, and an operating plate portion 52c provided on the inner circumference portion of one side edge of the auxiliary base plate portion 52a. The auxiliary base plate portion 52a is rectangular in shape, with both its length and width being larger than the inner face plate portion 51f, and has screw holes 52d and screw insertion holes 52e on its outer circumference. The screw holes 52d are provided at a position corresponding to the screw insertion holes 51h when the auxiliary base plate portion 52a is superimposed on the outer surface of the inner face plate portion 51f. The screw insertion holes 52e are formed at a position that is exposed to the interior when the auxiliary base plate portion 52a is superimposed on the outer surface of the inner face plate portion 51f. The auxiliary locking plate portion 52b extends inward from the portion above the contact plate portion 51c when the screw hole 52d of the auxiliary base plate portion 52a is aligned with the screw insertion hole 51h of the inner facing plate portion 51f, and it is possible to clamp the lower claw portion on the interior side between the auxiliary locking plate portion 52b and the contact plate portion 51c.

[0017] The anchor base 53 has a base wall portion 53a, two projection wall portions (projection plate portions) 53b, an outer facing wall portion (projection plate portion) 53c, and an inner facing wall portion (projection plate portion) 53d. The base wall portion 53a is a flat plate with a wider width than the base plate portion 51a. A screw insertion hole 53e is provided in the central part of the base wall portion 53a. The dimensions of the base wall portion 53a along the projection direction are approximately the same as those of the base plate portion 51a. The two projection wall portions 53b each have a flat plate shape extending inward from the side edge of the base wall portion 53a. The extension dimensions of the projection wall portions 53b are set to be smaller than those of the projection plate portion 51d. The outer facing wall portion 53c extends in the projection direction from the outdoor side edge of one of the projection wall portions 53b. The inner visible wall portion 53d extends in the visible direction from the indoor edge of the other visible wall portion 53b. The outer visible wall portion 53c and the inner visible wall portion 53d are configured such that when the outer visible wall portion 53c is brought into contact with the indoor surface of the outer visible plate portion 51e, and the outer surface of the visible wall portion 53b is brought into contact with the inner surface of the visible plate portion 51d, the inner visible wall portion 53d is positioned beyond the inner visible plate portion 51f. Furthermore, when the screw holes 52d of the auxiliary bracket 52 are aligned with the screw insertion holes 51h of the inner facing plate portion 51f, the outer facing wall portion 53c and the inner facing wall portion 53d are provided so that they can cover the screw insertion holes 52e of the auxiliary base plate portion 52a when the outer facing wall portion 53c is brought into contact with the indoor surface of the outer facing plate portion 51e and the outer surface of the facing wall portion 53b is brought into contact with the inner surface of the facing plate portion 51d. Two screw holes 53f are provided vertically in the inner facing wall portion 53d at positions corresponding to the screw insertion holes 52e of the auxiliary base plate portion 52a. The outer facing wall portion 53c is provided vertically along the screw insertion slots 53g at positions corresponding to the screw holes 51g of the outer facing plate portion 51e.

[0018] When attaching the frame 40 to the structural body B using the anchor member 50 described above, as shown in Figures 7-1 and 7-2, the screw member S9 is screwed into the structural body B through the screw insertion hole 53e of the base wall portion 53a, thereby attaching the anchor bases 53 to each of the four perimeters of the openings previously provided in the structural body B, with the outer visible wall portion 53c facing outwards. The anchor bases 53 can be attached to multiple locations along the longitudinal sides of the upper frame 41, lower frame 42, and vertical frame 43 in the structural body B.

[0019] Subsequently, as shown in Figures 8-1 and 8-2, the frame 40 is placed in the opening of the building structure B to which the anchor base 53 is attached. Furthermore, as shown in Figures 9-1 and 9-2, inner circumferential brackets 51, with the auxiliary brackets 52 removed, are attached to the upper frame 41, lower frame 42, and left and right vertical frames 43 at multiple locations corresponding to the anchor base 53 attached to the building structure B.

[0020] More specifically, for the lower frame 42, the lower claw portion 42b on the outdoor side is inserted and locked between the base plate portion 51a and the locking plate portion 51b, and the inner circumferential bracket 51 is positioned on the outer periphery of the lower frame 42 with the surface of the contact plate portion 51c in contact with the surface of the outer periphery of the lower claw portion 42b on the indoor side. Similarly, for the upper frame 41, the upper claw portion 41b on the outdoor side is inserted and locked between the base plate portion 51a and the locking plate portion 51b, and the inner circumferential bracket 51 is positioned on the outer periphery of the upper frame 41 with the surface of the contact plate portion 51c in contact with the surface of the outer periphery of the upper claw portion 41b on the indoor side. For the vertical frame 43, the lateral claw portion 43b on the outdoor side is inserted and locked between the base plate portion 51a and the locking plate portion 51b, and the inner circumferential bracket 51 is positioned on the outer periphery of the upper frame 41 with the surface of the contact plate portion 51c in contact with the surface of the outer periphery of the lateral claw portion 43b on the indoor side.

[0021] Next, as shown in Figures 10-1 and 10-2, the inner circumferential bracket 51 is connected to the anchor base 53 in each of the lower frame 42, upper frame 41, and vertical frame 43. Specifically, the inner circumferential bracket 51 and the anchor base 53 are connected by screwing the screw member (base connector) S11 into the screw hole 51g of the outer surface plate portion 51e through the screw insertion elongated hole 53g while the outer surface plate portion 51e is superimposed on the outer surface wall portion 53c, and screwing the screw member S12 into the screw insertion hole 52e while the auxiliary base plate portion 52a is superimposed on the inner surface wall portion 53d.

[0022] Next, while gripping the operating plate portion 52c, the auxiliary base plate portion 52a of the auxiliary bracket 52 is superimposed on the outdoor surface of the inner facing plate portion 51f, thereby sandwiching the indoor lower claw portion 42b between the auxiliary locking plate portion 52b and the contact plate portion 51c. From this state, the auxiliary bracket 52 and the inner circumference bracket 51 are integrated by screwing the screw member (bracket connector) S10 into the screw hole 52d via the screw insertion hole 51h, making it possible to attach the frame 40 to the building structure B. In other words, when the inner circumferential bracket 51 and the auxiliary bracket 52 are integrated as described above, the lower claw portion 42b on the outdoor side of the lower frame 42 is sandwiched between the base plate portion 51a and the locking plate portion 51b, and the lower claw portion 42b on the indoor side is sandwiched between the contact plate portion 51c and the auxiliary locking plate portion 52b. As a result, the inner circumferential bracket 51 and the auxiliary bracket 52 are maintained in a state where they are attached to the outer circumference of the lower frame 42, and the lower frame 42 is supported by the building structure B via the inner circumferential bracket 51, the auxiliary bracket 52, and the anchor base 53. Similarly, in the upper frame 41, the upper claw portion 41b on the outdoor side is sandwiched between the base portion 51a and the locking plate portion 51b, and the upper claw portion 41b on the indoor side is sandwiched between the contact plate portion 51c and the auxiliary locking plate portion 52b. As a result, the inner circumferential bracket 51 and the auxiliary bracket 52 are maintained in a state where they are attached to the outer periphery of the upper frame 41 and are supported by the building structure B via the inner circumferential bracket 51, the auxiliary bracket 52 and the anchor base 53. In the vertical frame 43, the upper claw portion 43b on the outdoor side is sandwiched between the base portion 51a and the locking plate portion 51b, and the upper claw portion 43b on the indoor side is sandwiched between the contact plate portion 51c and the auxiliary locking plate portion 52b. As a result, the inner circumferential bracket 51 and the auxiliary bracket 52 are maintained in a state where they are attached to the outer periphery of the vertical frame 43 and are supported by the building structure B via the inner circumferential bracket 51, the auxiliary bracket 52 and the anchor base 53.

[0023] As described above, with this mounting structure, the inner circumferential bracket 51 that engages with each of the claw portions 42b, 41b, and 43b on the outdoor side and the auxiliary bracket 52 that engages with each of the claw portions 42b, 41b, and 43b on the indoor side are configured separately. Therefore, the operation of engaging the inner circumferential bracket 51 with each of the claw portions 42b, 41b, and 43b and the operation of engaging the auxiliary bracket 52 with each of the claw portions 42b, 41b, and 43b can be performed individually, making it easier to attach the anchor member 50 to the frame 40. In particular, it is possible to screw in the screw members S11 and S12 that connect the inner circumferential bracket 51 and the anchor base 53 at a position that can be seen from the indoor side, making the above-mentioned work even easier. In addition, when the anchor member 50 is attached to the lower frame 42, upper frame 41, and vertical frame 43, it is not necessary to rotate the inner circumferential bracket 51 in the gap between the exterior claws 42b, 41b, and 43b and the interior claws 42b, 41b, and 43b. Therefore, the width of the inner circumferential bracket 51 can be made larger, and the mounting strength of the frame body 40 to the building structure B can be improved without providing a large number of anchor members 50. Furthermore, the inner visible wall portion 53d and the outer visible wall portion 53c of the anchor base 53 are each provided on the visible wall portion 53b. Therefore, even when an external force is applied in the visible direction through the panel 1C, the visible wall portion 53b can resist it, which is extremely advantageous in terms of wind pressure resistance.

[0024] (Embodiment 2) Figures 11 and 12 show a joinery piece to which the frame mounting structure of Embodiment 2 of the present invention is applied. The joinery piece illustrated here is called a sliding window, in which an outer sash 1A and an inner sash 1B are supported on a frame 10 so as to be slidable from side to side, and the frame 10 is attached to the wooden frame B of a wooden building. The frame 10 is constructed by assembling an upper frame (frame material) 11, a lower frame (frame material) 12, and left and right vertical frames (frame materials) 13 around the perimeter. The upper frame 11, lower frame 12, and vertical frames 13 are extruded profiles formed from metal such as aluminum alloy, and each is configured to have a substantially uniform cross-sectional shape along its longitudinal side.

[0025] The upper frame 11 has an upper frame body 11a that extends almost horizontally along the depth direction, and upper claw portions (claws) 11b provided on the outer circumference of the upper frame body 11a, on the outdoor side and on the indoor side, respectively. The upper claw portion 11b on the outdoor side extends inward from the outer circumference edge of the upper outer visible fin portion 11c provided on the outdoor side edge of the upper frame body 11a. The upper claw portion 11b on the indoor side extends outward from the outer circumference edge of the upper inner visible fin portion 11d provided on the indoor side edge of the upper frame body 11a. As is clear from the figure, the upper claw portions 11b are provided in positions opposite to each other, and their outer surfaces are located on almost the same horizontal plane. On the inner circumference side of the upper frame body 11a, an upper rail portion 11e is provided between the upper outer visible fin portion 11c and the upper inner visible fin portion 11d, which guides the sliding of the outer sash 1A and the inner sash 1B.

[0026] The lower frame 12 comprises a lower frame body 12a and lower claw portions (claws) 12b provided on the outer circumference of the lower frame body 12a, one on the side closer to the outside and the other on the side closer to the inside. The lower frame body 12a extends almost horizontally from the inner edge toward the outside, then gradually slopes downward toward the outside, and further extends almost horizontally toward the outside. The lower claw portion 12b closer to the outside extends toward the inside from the outer edge of the screw hole 12c provided on the outer side of the lower frame body 12a. The lower claw portion 12b on the inner side extends toward the outside from the outer edge of the lower inner fin portion 12d provided on the inner edge of the lower frame body 12a. The lower claw portion 12b on the outer side is located further outward than the lower claw portion 12b on the inner side. A lower rail section 12e is provided on the inner circumference side of the lower frame body 12a to guide the sliding of the outer sash 1A and the inner sash 1B.

[0027] The left and right vertical frames 13, although not explicitly shown in the figure, are symmetrical in shape and consist of a vertical frame body 13a extending almost vertically along the depth direction, and lateral claw portions (claws) 13b provided on the outer periphery of the vertical frame body 13a, on the outdoor side and the indoor side, respectively. The outdoor lateral claw portion 13b extends inward from the outer periphery edge of the vertical outer visible fin portion 13c provided on the outdoor edge of the vertical frame body 13a. The indoor lateral claw portion 13b extends outward from the outer periphery edge of the vertical inner visible fin portion 13d provided on the indoor edge of the vertical frame body 13a. As is clear from the figure, the lateral claw portions 13b are provided in positions opposite to each other, and their outer surfaces are located on approximately the same vertical plane. The spacing between the lateral claw portions 13b is approximately equal to the spacing between the upper claw portions 11b.

[0028] For attaching the aforementioned upper frame 11, lower frame 12, and vertical frame 13 to the structural frame B, there are anchor members provided: a common type for use with the upper frame 11 and vertical frame 13, and a dedicated type for use with the lower frame 12.

[0029] The anchor members 20 used for the upper frame 11 and vertical frame 13 are configured as shown in Figures 13 to 15, comprising an upper inner circumferential bracket (first anchor bracket) 21, an upper auxiliary bracket (second anchor bracket) 22, and an upper anchor base (anchor base) 23. The upper inner circumferential bracket 21, the upper auxiliary bracket 22, and the upper anchor base 23 are formed separately from each other from metal such as aluminum alloy or steel. For convenience, dots are shown on the upper auxiliary bracket 22 and the upper anchor base 23 in Figures 13 to 15.

[0030] The upper inner circumferential bracket 21 has an upper base plate portion 21a, an upper outer facing plate portion 21b, an upper inner facing plate portion (facing plate portion) 21c, and an upper locking plate portion (locking portion) 21d. The upper base plate portion 21a is a rectangular flat plate that extends along the horizontal direction. The dimension of the upper base plate portion 21a along the depth direction is set to be smaller than the distance between the upper claw portions 11b. Upper outer contact pieces (locking portions) 21e are provided at both ends of the outdoor edge portion of the upper base plate portion 21a, and upper inner contact pieces (contact support portions) 21f are provided at both ends of the indoor edge portion of the upper base plate portion 21a. The upper outer contact piece 21e and the upper inner contact piece 21f each extend in the depth direction along the upper base plate 21a, and their protrusion dimensions from the upper base plate 21a are set so that they can simultaneously contact the upper claw portion 11b on the outdoor side and the upper claw portion 11b on the indoor side. The upper outer facing plate 21b extends in the facing direction toward the outer periphery from the portion between the upper outer contact pieces 21e on the outdoor edge of the upper base plate 21a. The upper inner facing plate 21c extends in the facing direction toward the outer periphery from the portion between the upper inner contact pieces 21f on the indoor edge of the upper base plate 21a. The upper outer facing plate portion 21b is positioned to the right of the upper base plate portion 21a when viewed from the indoor side, and the upper inner facing plate portion 21c is positioned to the left of the upper base plate portion 21a when viewed from the indoor side. The upper outer facing plate portion 21b is provided with a plurality of screw insertion holes (base mounting portions) 21g, and the upper inner facing plate portion 21c is provided with a plurality of screw insertion holes 21h and screw holes 21i. The screw insertion holes 21g and 21h are arranged side by side along the facing direction. The screw insertion holes 21g of the upper outer facing plate portion 21b are provided in a portion that protrudes to the right of the upper inner facing plate portion 21c and can be seen when viewed from the indoor side. As is clear from the figure, the outer edge of the upper outer facing plate portion 21b is provided with a narrow upper projection (projection) 21j. The upper projection 21j has a screw insertion hole 21g formed on its outermost periphery. The upper base plate portion 21a has a base insertion notch (insertion notch) 21k on the outdoor side of the upper inner facing plate portion 21c.The upper locking plate portion 21d is provided between the upper outer facing plate portion 21b and the upper outer contact piece portion 21e at the outdoor-side edge of the upper base plate portion 21a, and is capable of gripping the outdoor-side upper claw portion 11b between itself and the inner-circumferential surface of the upper outer contact piece portion 21e. In other words, the upper locking plate portion 21d extends inclined from the upper base plate portion 21a toward the outside, gradually becoming inward, and then extends almost horizontally toward the outside.

[0031] The upper auxiliary bracket 22 has an upper auxiliary base plate portion (visible plate portion) 22a which is flat in the direction of visibility, and an upper auxiliary locking plate portion 22b which is provided in the interior from the edge on the inner circumference side of the upper auxiliary base plate portion 22a. The dimensions of the upper auxiliary base plate portion 22a and the upper auxiliary locking plate portion 22b are made smaller than the width of the upper inner visible plate portion 21c. A screw insertion hole (mounting portion) 22c is formed in the upper auxiliary base plate portion 22a. The dimensions of the screw insertion hole 22c are set such that, when the upper auxiliary base plate portion 22a is in contact with the surface of the upper inner facing plate portion 21c facing the interior, and aligned with the screw hole 21i of the upper inner facing plate portion 21c, the upper auxiliary locking plate portion 22b is positioned on the inner circumference side of the upper base plate portion 21a, and a gap is secured between the upper inner contact piece portion 21f and the upper auxiliary locking plate portion 22b that allows the upper claw portion 11b to be held.

[0032] The upper anchor base 23 has an upper base wall portion 23a, an upper outer visible wall portion 23b, an upper inner visible wall portion 23c, and an upper mounting wall portion (mounting piece) 23d. The upper base wall portion 23a is flat. The dimensions of the upper base wall portion 23a along the depth direction are approximately the same as those of the upper base plate portion 21a. The upper outer visible wall portion 23b extends in the visible direction from the outdoor edge of the upper base wall portion 23a toward the inner circumference. The upper inner visible wall portion 23c extends in the visible direction from the indoor edge of the upper base wall portion 23a toward the inner circumference. The distance between the upper outer visible wall portion 23b and the upper inner visible wall portion 23c is approximately equal to the distance between the upper outer visible plate portion 21b and the upper inner visible plate portion 21c. The upper outer visible wall portion 23b has approximately the same width as the upper base wall portion 23a. The upper inner visible wall portion 23c has approximately half the width of the upper base wall portion 23a and is positioned to the left of the upper base wall portion 23a when viewed from the interior side. The upper outer visible wall portion 23b and the upper inner visible wall portion 23c are provided with upper base protrusions (protrusions) 23e and 23f on their respective inner peripheral edges, and each is provided with multiple screw holes (base mounting portions) 23g and 23h. The upper base protrusion 23e provided on the upper outer visible wall portion 23b is formed to a width that allows it to be positioned between the upper outer contact piece portion 21e and the upper locking plate portion 21d provided on the upper inner peripheral bracket 21. The upper base projection 23f provided on the upper inner visible wall portion 23c is sized to allow insertion into the base insertion notch 21k of the upper base plate portion 21a. On the upper base wall portion 23a, a bracket insertion notch (insertion notch) 23i is provided on the part facing the interior side of the upper outer visible wall portion 23b, through which the upper projection 21j can be inserted. The screw holes 23g and 23h are arranged side by side along the visible direction, and are positioned to correspond to the screw insertion hole 21g of the upper outer visible plate portion 21b and the screw insertion hole 21h of the upper inner visible plate portion 21c when the widthwise positions of the upper projection 21j and the bracket insertion notch 23i are aligned with each other. The upper mounting wall portion 23d extends almost horizontally into the room from the portion of the upper base wall portion 23a that is to the right of the upper inner visible wall portion 23c on the inner peripheral edge. A screw insertion hole 23j is provided in the portion of the upper mounting wall portion 23d that is closer to the room, so as to be elongated along the depth direction.

[0033] The anchor member 30 used in the lower frame 12 is configured as shown in Figures 16 to 18, comprising a lower inner circumferential bracket (first anchor bracket) 31, a lower auxiliary bracket (second anchor bracket) 32, and a lower anchor base (anchor base) 33. The lower inner circumferential bracket 31, the lower auxiliary bracket 32, and the lower anchor base 33 are formed separately from each other from metal such as aluminum alloy or steel. For convenience, dots are shown on the lower auxiliary bracket 32 ​​and the lower anchor base 33 in Figures 16 to 18.

[0034] The lower inner circumferential bracket 31 has a lower base plate portion 31a, a lower contact piece portion (locking portion) 31b, a lower locking plate portion (locking portion) 31c, a lower contact plate portion (contact support portion) 31d, a lower outer facing plate portion 31e, and a lower inner facing plate portion (facing plate portion) 31f. The lower base plate portion 31a is a rectangular flat plate that is inclined so as to gradually become the outer circumference toward the outside. The lower contact piece portion 31b extends almost horizontally toward the outside from the outer edge of the lower base plate portion 31a. The lower locking plate portion 31c extends inclined from the widthwise central portion of the lower contact piece portion 31b so as to gradually become the inner circumference toward the outside, and then extends almost horizontally toward the outside, and it is possible to clamp the lower claw portion 12b on the outer side between the surface of the lower contact piece portion 31b which is the inner circumference side and the locking plate portion 31c. The lower contact plate portion 31d extends almost horizontally inward from the indoor side edge of the lower base plate portion 31a. The dimensions of the lower base plate portion 31a, the lower contact piece portion 31b, and the lower contact plate portion 31d are set so that when the lower claw portion 12b on the outdoor side is brought into contact with the lower contact piece portion 31b, the lower claw portion 12b on the indoor side can come into contact with the lower contact plate portion 31d. The lower outer facing plate portion 31e extends in the facing direction outward from the outdoor side edge of the lower contact piece portion 31b. Screw insertion holes 31g are provided at both corners on the outer periphery side of the lower outer facing plate portion 31e. The lower inner facing plate portion 31f extends in the facing direction outward from the indoor side edge of the lower contact plate portion 31d. The lower inner facing plate portion 31f is narrower than the lower outer facing plate portion 31e, and when viewed from the indoor side, the screw insertion holes 31g of the lower outer facing plate portion 31e can be seen from both sides. The lower inner facing plate portion 31f is provided with screw insertion holes 31h on the outer circumference side and screw holes 31i on the inner circumference side. When viewed from the indoor side, the screw insertion holes 31h are located on the left side and the screw holes 31i are located on the right side. In addition, a set notch 31j is provided in the lower inner facing plate portion 31f at approximately the center in the width direction of the lower contact plate portion 31d.

[0035] The lower auxiliary bracket 32 ​​has a lower auxiliary base plate portion (visible plate portion) 32a which is flat in the direction of visibility, and a lower auxiliary locking plate portion 32b provided on the inner edge of the lower auxiliary base plate portion 32a. The lower auxiliary locking plate portion 32b has a first locking plate portion 32c which extends from the lower auxiliary base plate portion 32a toward the outside, a second locking plate portion 32d which extends from the outdoor edge of the first locking plate portion 32c toward the inner side, and a third locking plate portion 32e which extends from the inner edge of the second locking plate portion 32d toward the inside. The dimensions of the lower auxiliary base plate portion 32a and the lower auxiliary locking plate portion 32b are smaller than the width of the lower inner visible plate portion 31f. The lower auxiliary base plate portion 32a is provided with screw insertion holes 32f and 32g, respectively, corresponding to the screw insertion holes 31h and 31i of the lower inner facing plate portion 31f. The lower auxiliary locking plate portion 32b is formed such that when the screw insertion holes 32f and 32g of the lower auxiliary base plate portion 32a are aligned with the screw insertion holes 31h and 31i of the lower inner facing plate portion 31f, the lower auxiliary locking plate portion 32b is located inside the setting notch portion 31j and protrudes inward from the lower contact plate portion 31d. More specifically, the lower auxiliary locking plate portion 32b is configured such that when the screw insertion hole 32f of the lower auxiliary base plate portion 32a is aligned with the screw insertion hole 31h of the lower inner facing plate portion 31f, and the screw insertion hole (mounting portion) 32g is aligned with the screw hole 31i, the portion of the second locking plate portion 32d located on the inner circumference side and the third locking plate portion 32e protrude further inward than the lower contact plate portion 31d, and a gap is secured between the lower contact plate portion 31d and the third locking plate portion 32e that can hold the lower claw portion 12b on the indoor side.

[0036] The lower anchor base 33 has a lower base wall portion 33a, a lower outer visible wall portion 33b, a lower inner visible wall portion 33c, and a lower mounting wall portion (mounting piece) 33d. The lower base wall portion 33a is a flat plate with a width approximately the same as that of the lower outer visible plate portion 31e. The dimensions of the lower base wall portion 33a along the depth direction are approximately the same as the distance between the lower outer visible plate portion 31e and the lower inner visible plate portion 31f. The lower outer visible wall portion 33b extends in the visible direction from the outdoor edge of the lower base wall portion 33a toward the inner circumference, and has a width approximately the same as that of the lower outer visible plate portion 31e. The lower inner visible wall portion 33c extends in the visible direction from the indoor edge of the lower base wall portion 33a toward the inner circumference. The distance between the lower outer visible wall portion 33b and the lower inner visible wall portion 33c is approximately equal to the distance between the lower outer visible plate portion 31e and the lower inner visible plate portion 31f. The lower inner visible wall portion 33c has a width of approximately half that of the lower base wall portion 33a and is located in the approximately central part of the lower base wall portion 33a. Therefore, when viewed from the indoor side, both side edges of the lower outer visible wall portion 33b can be seen on both sides of the lower inner visible wall portion 33c. The lower inner visible wall portion 33c is provided with a lower base projection portion 33e on its inner peripheral edge, and the lower outer visible wall portion 33b and the lower inner visible wall portion 33c are provided with multiple screw holes 33f and 33g, respectively. The lower base projection portion 33e is located in the left-leaning part of the lower inner visible wall portion 33c when viewed from the indoor side. The screw holes 33f and 33g are arranged in a staggered pattern along the visible direction, and are positioned to correspond to the screw insertion holes 31g of the lower outer visible wall portion 33b and the screw insertion holes 31h of the lower inner visible plate portion 31f when the lower outer visible wall portion 33b is superimposed on the lower outer visible plate portion 31e. The lower mounting wall portion 33d is provided in the room from the portion to the left of the lower inner visible wall portion 33c on the indoor edge of the lower base wall portion 33a and extends almost horizontally into the room. The portion of the lower mounting wall portion 33d closer to the room is provided with an elongated screw insertion hole 33h along the depth direction.

[0037] Figures 19 to 24 show the procedure for attaching the upper frame 11 and lower frame 12 to the structure B by applying the anchor members 20 and 30 described above. The frame material attachment structure will be explained below with reference to these figures. It is assumed that the upper frame 11 and lower frame 12 are pre-assembled together with the left and right vertical frames 13 to form the frame body 10.

[0038] First, as shown in Figure 19, the upper inner circumferential bracket 21 is attached to the outer periphery of the upper frame 11 with the upper auxiliary bracket 22 and upper anchor base 23 removed, and the lower inner circumferential bracket 31 is attached to the outer periphery of the lower frame 12 with the lower auxiliary bracket 32 ​​and lower anchor base 33 removed. Specifically, the upper claw portion 11b on the outdoor side is inserted and locked between the upper locking plate portion 21d and the upper outer contact piece portion 21e, and the upper inner circumferential bracket 21 is positioned on the outer periphery of the upper frame 11 with the surface of the upper inner contact piece portion 21f in contact with the surface of the upper inner contact piece portion 21f in contact with the surface of the upper claw portion 11b on the indoor side. Similarly, the lower claw portion 12b on the outdoor side is inserted and locked between the lower contact piece portion 31b and the lower locking plate portion 31c, and the lower inner circumferential bracket 31 is positioned on the outer periphery of the lower frame 12 with the surface of the lower contact plate portion 31d in contact with the surface of the lower claw portion 12b on the indoor side. Although not explicitly shown in the diagram, the upper inner circumferential brackets 21 are provided at multiple locations along the longitudinal side of the upper frame 11, and the lower inner circumferential brackets 31 are provided at multiple locations along the longitudinal side of the lower frame 12.

[0039] Next, as shown in Figure 20, after inserting the upper auxiliary locking plate portion 22b of the upper auxiliary bracket 22 from between the upper inner contact pieces 21f, the upper auxiliary base plate portion 22a is superimposed on the upper inner facing plate portion 21c, thereby sandwiching the upper claw portion 11b on the indoor side between the upper auxiliary locking plate portion 22b and the upper inner contact pieces 21f. From this state, the screw member (bracket connector) S1 is screwed into the screw hole 21i via the screw insertion hole 22c, thereby integrating the upper auxiliary bracket 22 with the upper inner circumferential bracket 21. When the upper inner circumferential bracket 21 and the upper auxiliary bracket 22 are integrated as described above, the upper claw portion 11b on the outdoor side of the upper frame 11 is sandwiched between the upper locking plate portion 21d and the upper outer contact piece portion 21e, and the upper claw portion 11b on the indoor side is sandwiched between the upper inner contact piece portion 21f and the upper auxiliary locking plate portion 22b, so that the upper inner circumferential bracket 21 and the upper auxiliary bracket 22 are maintained in a state where they are attached to the outer periphery of the upper frame 11. Similarly, after inserting the lower auxiliary locking plate portion 32b of the lower auxiliary bracket 32 ​​through the set notch 31j, the lower auxiliary base plate portion 32a is superimposed on the lower inner facing plate portion 31f, thereby sandwiching the lower claw portion 12b on the indoor side between the lower auxiliary locking plate portion 32b and the lower contact plate portion 31d. From this state, the screw member (bracket connector) S2 is screwed into the screw hole 31i through the screw insertion hole 32g, thereby integrating the lower auxiliary bracket 32 ​​and the lower inner circumference bracket 31. When the lower inner circumferential bracket 31 and the lower auxiliary bracket 32 ​​are integrated as described above, the lower claw portion 12b on the outdoor side of the lower frame 12 is sandwiched between the lower contact piece 31b and the lower locking plate portion 31c, and the lower claw portion 12b on the indoor side is sandwiched between the lower contact plate portion 31d and the lower auxiliary locking plate portion 32b, so that the lower inner circumferential bracket 31 and the lower auxiliary bracket 32 ​​are maintained in a state where they are attached to the outer periphery of the lower frame 12.

[0040] Subsequently, as shown in Figure 21, the upper anchor base 23 is attached to the upper inner circumferential bracket 21 by first overlapping the upper outer visible wall portion 23b with the upper outer visible plate portion 21b on the outdoor side, screwing the screw member (base connector) S3 into the screw hole 23g via the screw insertion hole 21g, and then, with the upper inner visible wall portion 23c overlapping the upper inner visible plate portion 21c on the outdoor side, screwing the screw member (base connector) S4 into the screw hole 23h via the screw insertion hole 21h. Although not explicitly shown in the figure, the vertical frame 13 is attached to the outer circumference portion by the same procedure as the upper frame 11, with the upper inner circumferential bracket 21 and upper auxiliary bracket 22 attached, and then the upper anchor base 23 attached to the upper inner circumferential bracket 21. At this time, the screw holes 23g and 23h into which the screw members S3 and S4 are screwed are appropriately selected so that the gap between the upper anchor base 23 attached to the vertical frame 13 and the building structure B is minimized. The vertical frame 13 also has upper inner circumferential brackets 21 attached to multiple locations along its length.

[0041] Next, as shown in Figure 22, the frame 10, with anchor members 20 attached to the upper frame 11 and the left and right vertical frames 13 respectively, is placed in the opening provided in the building structure B. Then, as shown in Figure 23, the lower anchor base 33 is inserted through the gap between the lower frame 12 and the building structure B. From this state, the lower anchor base 33 is moved as appropriate along the longitudinal side of the lower frame 12 so that the lower inner facing wall portion 33c is superimposed on the outdoor side of the lower inner facing plate portion 31f, and the lower outer facing wall portion 33b is superimposed on the outdoor side of the lower outer facing plate portion 31e. From this state, the screw member S5 is screwed into the screw hole 33f through the screw insertion hole 31g, and the screw member S6 is screwed into the screw hole 33g through the screw insertion hole 31h, thereby attaching the lower anchor base 33 to the lower inner circumferential bracket 31. In this case as well, by appropriately selecting the screw holes 33f and 33g into which the screw members S5 and S6 are screwed, the gap between the upper anchor base 23 attached to the upper frame 11 and the building structure B, and the gap between the lower anchor base 33 and the building structure B are set to the minimum. If a gap occurs between the upper anchor base 23 and the building structure B, or between the lower anchor base 33 and the building structure B, a spacer C is provided to fill the gap. As shown in Figure 24, from the above state, the frame 10 can be attached to the building structure B by screwing the screw member S7 into the building structure B through the screw insertion hole 23j, and screwing the screw member S8 into the building structure B through the screw insertion hole 33h.

[0042] As described above, with this mounting structure, the upper inner circumferential bracket 21 that engages with the upper claw portion 11b on the outdoor side and the upper auxiliary bracket 22 that engages with the upper claw portion 11b on the indoor side are configured as separate parts. Therefore, the operation of engaging the upper inner circumferential bracket 21 with the upper claw portion 11b and the operation of engaging the upper auxiliary bracket 22 with the upper claw portion 11b can be performed individually, making it easier to attach the anchor member 20 to the upper frame 11 and vertical frame 13. Furthermore, since the upper inner circumferential bracket 21 and the upper anchor base 23 are molded as separate parts, and the upper anchor base 23 is interposed between the upper inner circumferential bracket 21 and the building structure B, the upper inner circumferential bracket 21 and the upper auxiliary bracket 22 can be attached to the upper frame 11 and vertical frame 13 in advance before attaching them to the building structure B, making the attachment work easier. In particular, the screw members S3 and S4 connecting the upper inner circumferential bracket 21 and the upper anchor base 23 can be screwed in at a position visible from the interior side, further simplifying the above-mentioned work. In addition, when attaching to the upper frame 11 and vertical frame 13, there is no need to rotate the upper inner circumferential bracket 21 in the gap between the upper claw portion 11b on the exterior side and the upper claw portion 11b on the interior side, so the width of the upper inner circumferential bracket 21 can be made larger, and the mounting strength of the upper frame 11 and vertical frame 13 to the building structure B can be improved.

[0043] Similarly, the lower inner circumferential bracket 31 that engages with the lower claw portion 12b on the outdoor side and the lower auxiliary bracket 32 ​​that engages with the lower claw portion 12b on the indoor side are configured as separate parts. Therefore, the operation of engaging the lower inner circumferential bracket 31 with the lower claw portion 12b and the operation of engaging the lower auxiliary bracket 32 ​​with the lower claw portion 12b can be performed individually, making it easier to attach the anchor member 30 to the lower frame 12. In addition, since the lower inner circumferential bracket 31 and the lower anchor base 33 are molded as separate parts, and the lower anchor base 33 is interposed between the lower inner circumferential bracket 31 and the building structure B, the attachment work to the building structure B can be performed with the lower inner circumferential bracket 31 and the lower auxiliary bracket 32 ​​already attached to the lower frame 12, making the attachment work easier. In particular, it is possible to screw in the screw members S5 and S6 that connect the lower inner circumferential bracket 31 and the lower anchor base 33 at a position that can be seen from the indoor side, making the above work even easier. In addition, when the anchor member 30 is attached to the lower frame 12, there is no need to rotate the lower inner circumferential bracket 31 in the gap between the lower claw portion 12b on the outdoor side and the lower claw portion 12b on the indoor side. Therefore, the width of the lower inner circumferential bracket 31 can be made larger, which improves the mounting strength of the lower frame 12 to the building structure B.

[0044] Furthermore, the upper inner circumferential bracket 21 and the upper anchor base 23 of the anchor member 20 are provided with insertion notches 21k, 23i and protrusions 21j, 23f, respectively, corresponding to each other. Moreover, the protrusions 21j, 23f are provided with screw insertion holes 21g and 23h, respectively. Therefore, the distance between the upper base wall portion 23a and the upper base plate portion 21a can be increased by the amount of the protrusions 21j, 23f, and by inserting the protrusions 21j, 23f into the insertion notches 21k, 23i, the distance between the upper base wall portion 23a and the upper base plate portion 21a can be brought closer together, thereby enabling a larger range of gap adjustment between the building structure B and the frame 10. However, the present invention does not necessarily require the provision of protrusions 21j, 23f and insertion notches 21k, 23i.

[0045] (Embodiment 3) Figures 25 and 26 show a joinery to which the frame mounting structure of Embodiment 3 of the present invention is applied. The joinery illustrated here is a fixed window, similar to Embodiment 1, in which a panel 1C such as double-glazed glass is fitted into a frame 60, and the frame 60 is attached to a concrete structure B of a building, etc., via angle members D. The frame 60 is constructed by assembling an upper frame (frame material) 61, a lower frame (frame material) 62, and left and right vertical frames (frame materials) 63 around the perimeter. The upper frame 61, lower frame 62, and vertical frames 63 are extruded profiles formed from metal such as aluminum alloy, and each is configured to have a substantially uniform cross-sectional shape along its longitudinal side.

[0046] The upper frame 61 has an upper frame body 61a that extends almost horizontally along the depth direction, and upper claw portions (claws) 61b provided on the outer circumference of the upper frame body 61a, approximately in the center and on the interior side, respectively. The central upper claw portion 61b extends inward from the outer circumference of the upper intermediate visible fin portion 61c that extends outward from the middle of the upper frame body 61a. The interior side upper claw portion 61b extends outward from the outer circumference of the upper inward visible fin portion 61d provided on the interior edge of the upper frame body 61a. As is clear from the figure, the upper claw portions 61b are provided in positions opposite to each other, and their outer surfaces are located on approximately the same horizontal plane. The outer circumference edge of the upper frame body 61a is provided with an upper outward visible fin portion 61e that is aligned with the depth direction. A trim strip 61g is attached to the inner circumference of the upper frame body 61a via an upper trim strip mounting portion 61f. The trim strip 61g extends in the visible direction from the portion of the upper frame body 61a that is closer to the interior side toward the inner circumference.

[0047] The lower frame 62 has a lower frame body 62a and lower claw portions (claws) 62b provided on the lower frame body 62a, specifically in the approximately central part of the outer circumference and on the indoor side. The lower frame body 62a extends almost horizontally from the indoor edge toward the outdoors, then gradually slopes downward toward the outdoors, and further extends almost horizontally toward the outdoors. The outer circumference edge of the lower frame body 62a is provided with a lower outer visible fin portion 62c, and the outer circumference portion of the lower frame body 62a that is closer to the outdoors is provided with a drainage portion 62d. The lower outer visible fin portion 62c extends in the visible direction toward the inner circumference. The drainage portion 62d extends in the visible direction toward the outer circumference, then gradually slopes toward the outer circumference toward the outdoors, and further extends toward the outer circumference. A partition fin portion 62e is provided on the outer edge of the portion of the drainage section 62d that extends in the visible direction. The partition fin portion 62e extends almost horizontally toward the interior, and then extends toward the outer edge in the visible direction. The central lower claw portion 62b extends toward the interior from the outer edge of the partition fin portion 62e. The lower claw portion 62b on the interior side extends toward the exterior from the outer edge of the lower inner visible fin portion 62f provided on the interior edge of the lower frame body 62a. The lower claw portions 62b are provided in positions opposite to each other, and their outer surfaces are located on approximately the same horizontal plane. An inner panel support fin portion 62g is provided on the inner circumferential portion of the lower inner visible fin portion 62f so as to be almost horizontal toward the exterior.

[0048] The left and right vertical frames 63, although not explicitly shown in the figure, are symmetrical in shape and are configured to have almost the same cross-sectional shape as the upper frame 61. That is, the vertical frame 63 of Embodiment 3 has a vertical frame body 63a, a lateral claw portion (claw portion) 63b, a vertical intermediate visible fin portion 63c, a vertical inner visible fin portion 61d, a vertical outer visible fin portion 61e, and a lateral flashing attachment portion 63f, corresponding to the upper frame body 61a, upper claw portion 61b, upper intermediate visible fin portion 61c, upper inner visible fin portion 61d, upper outer visible fin portion 61e, and upper flashing attachment portion 61f of the upper frame 61. A flashing 63g is attached to the lateral flashing attachment portion 63f so as to extend toward the inner circumference.

[0049] The anchor members U,70 used to attach the upper frame 61, lower frame 62, and vertical frame 63 to the building structure B are those with a nearly identical configuration for the lower frame 62 and the left and right vertical frames 63, while the upper frame 61 uses the same type as in the past. Specifically, the anchor member U used for the upper frame 61 has an upper locking plate portion u2 provided on the outdoor and indoor edges of the upper plate portion u1, which is shaped like a flat plate, and the upper claw portion 61b is sandwiched between the upper plate portion u1 and the upper locking plate portion u2 to attach it to the outer circumference of the upper frame 61.

[0050] The anchor members 70 used in the lower frame 62 and the vertical frame 63 are each composed of an inner circumferential bracket (first anchor bracket) 71, an auxiliary bracket (second anchor bracket) 72, and an anchor base 73. The inner circumferential bracket 71, the auxiliary bracket 72, and the anchor base 73 are formed separately from each other from metal such as aluminum alloy or steel. Hereinafter, the anchor members 70 applied to the lower frame 62 will be described as representative, with reference to Figures 27 to 29, and the anchor members 70 applied to the vertical frame 63 will be described in detail, with the same reference numerals used for the corresponding components. For convenience, in Figures 27 to 29, the auxiliary bracket 72 and the anchor base 73 are marked with dots.

[0051] The inner circumferential bracket 71 has a base plate portion (contact support portion) 71a, a locking plate portion (locking portion) 71b, a contact plate portion (locking portion) 71c, an outer visible plate portion 71d, and an inner visible plate portion (visible plate portion) 71e. The base plate portion 71a is a flat plate that extends substantially horizontally along the depth direction. The locking plate portion 71b extends inward from a portion approximately in the center of the outdoor edge of the base plate portion 71a, and then extends substantially horizontally outward. The contact plate portion 71c extends substantially horizontally from a position on the outdoor edge of the base plate portion 71a that is to the right of the locking plate portion 71b when viewed from the inside. A gap is secured between the locking plate portion 71b and the contact plate portion 71c that allows the central lower claw portion 62b to be clamped. The dimensions of the base plate portion 71a, the locking plate portion 71b, and the contact plate portion 71c are set such that when the central lower claw portion 62b is inserted between the locking plate portion 71b and the contact plate portion 71c, the lower claw portion 62b on the indoor side can contact the base plate portion 71a. The base plate portion 71a is also provided with an insertion notch 71f on the edge on the right side when viewed from the indoor side. More specifically, the base plate portion 71a is provided with an insertion notch 71f in the part corresponding to the outdoor edge of the lower claw portion 62b on the indoor side when the central lower claw portion 62b is inserted between the locking plate portion 71b and the contact plate portion 71c. This insertion notch 71f extends along the longitudinal side of the lower frame 62 and is formed to a width that allows the second locking plate portion 72e of the auxiliary bracket 72, which will be described later, to be inserted. The outer facing plate portion 71d is a flat plate that extends outward in the facing direction from a position on the outdoor side edge of the base plate portion 71a that is to the left of the locking plate portion 71b when viewed from the indoor side. A screw hole 71g is provided in the outer peripheral portion of the outer facing plate portion 71d. The inner facing plate portion 71e is a flat plate that extends outward in the facing direction from a position on the indoor side edge of the base plate portion 71a that corresponds to the locking plate portion 71b and the contact plate portion 71c. The extended dimension of the inner facing plate portion 71e is approximately equal to that of the outer facing plate portion 71d. A screw hole 71h and a screw insertion hole (mounting portion) 71i are provided side by side on the left and right of the outer peripheral portion of the inner facing plate portion 71e. In the illustrated example, the screw hole 71h is provided in the inner facing plate portion 71e at the central side of the base plate portion 71a.

[0052] The auxiliary bracket 72 has an auxiliary base plate portion (visible plate portion) 72a which is flat in the direction of visibility, and an auxiliary locking plate portion 72b provided on the inner edge of the auxiliary base plate portion 72a. The auxiliary base plate portion 72a is flat in the direction of visibility and has the same width as the inner visible plate portion 71e, and has two screw holes 72c on the outer edge. The screw holes 72c are arranged side by side on the left and right. The auxiliary locking plate portion 72b has a first locking plate portion 72d which extends in the visibility direction toward the outside from the inner edge of the auxiliary base plate portion 72a, a second locking plate portion 72e which extends in the visibility direction toward the inside from the outer edge of the first locking plate portion 72d, and a third locking plate portion 72f which extends toward the inside from the inner edge of the second locking plate portion 72e. The dimensions of the auxiliary locking plate portion 72b are set such that when the auxiliary base plate portion 72a is brought into contact with the outdoor surface of the inner facing plate portion 71e, the second locking plate portion 72e is inserted into the insertion notch 71f, and the third locking plate portion 72f protrudes beyond the base plate portion 71a, ensuring a gap between the third locking plate portion 72f and the base plate portion 71a that allows the indoor-side lower claw portion 62b to be clamped.

[0053] The anchor base 73 has a base wall portion (mounting piece) 73a, an extension wall portion 73b, an outer visible wall portion 73c, and an inner visible wall portion 73d. The base wall portion 73a is flat. A screw insertion hole 73e is provided in the portion of the base wall portion 73a that is closer to the outdoor side. The extension wall portion 73b is flat and extends from the left half of the indoor view toward the outdoors at the outdoor edge of the base wall portion 73a. The dimension of the extension wall portion 73b along the depth direction is approximately equal to the dimension of the base plate portion 71a along the depth direction. The outer visible wall portion 73c extends in the visible direction toward the inner circumference from the outdoor edge of the extension wall portion 73b. In the illustrated example, the extension wall portion 73b and the outer visible wall portion 73c are configured to have approximately the same width as the outer visible plate portion 71d. A screw insertion hole 73f is provided in the inner circumference portion of the outer visible wall portion 73c. ​​The inner visible wall portion 73d extends in the visible direction from the right half of the indoor view towards the inner circumference on the outdoor side edge of the base wall portion 73a. A screw insertion hole 73g is provided in the inner circumference portion of the inner visible wall portion 73d.

[0054] When attaching the frame 60 to the structure B using the anchor members U, 70 described above, the anchor member U is attached to the outer circumference of the upper frame 61, and the inner circumferential bracket 71, with the auxiliary bracket 72 and anchor base 73 removed, is attached to the outer circumference of the lower frame 62 and the outer circumference of the vertical frame 63, respectively. For the anchor member U, the upper claw portion 61b can be sandwiched between the upper base portion u1 and the upper locking plate portion u2 by an appropriate method.

[0055] The anchor member 70 is positioned in an opening provided in the structural body B, and the anchor base 73 is pre-fixed to the structural body B by screwing the screw member S16 into the angle material D through the screw insertion hole 73e.

[0056] On the other hand, regarding the inner circumferential bracket 71, to explain specifically using the lower frame 62 as an example, the central lower claw portion 62b is inserted and locked between the locking plate portion 71b and the contact plate portion 71c, and the inner circumferential surface of the base plate portion 71a is in contact with the outer circumferential surface of the lower claw portion 62b on the indoor side, and the bracket is positioned on the outer circumferential portion of the lower frame 62. Although not explicitly shown in the figure, the inner circumferential bracket 71 is provided at multiple locations along the longitudinal side of the lower frame 62.

[0057] Next, the second locking plate portion 72e of the auxiliary bracket 72 is inserted into the insertion notch 71f of the base portion 71a, and then the auxiliary base portion 72a is superimposed on the inner facing plate portion 71e, thereby sandwiching the lower claw portion 62b on the indoor side between the third locking plate portion 72f and the base portion 71a. From this state, the auxiliary bracket 72 is integrated with the inner circumferential bracket 71 by screwing the screw member (bracket connector) S13 into the screw hole 72c via the screw insertion hole 71i. When the inner circumferential bracket 71 and the auxiliary bracket 72 are integrated as described above, the central lower claw portion 62b provided on the lower frame 62 is sandwiched between the locking plate portion 71b and the contact plate portion 71c, and the lower claw portion 62b on the indoor side is sandwiched between the base portion 71a and the third locking plate portion 72f, so that the inner circumferential bracket 71 and the auxiliary bracket 72 are maintained in a state where they are attached to the outer periphery of the lower frame 62.

[0058] Subsequently, the frame 60 is placed in the opening of the structure B, and the inner perimeter bracket 71 is connected to the anchor base 73, thereby attaching the frame 60 to the structure B. Specifically, the inner perimeter bracket 71 is fixed to the anchor base 73 by screwing the screw member S14 into the screw hole 71g via the screw insertion hole 73f with the outer visible wall portion 73c overlapping the outer visible wall portion 71d on the interior side, and screwing the screw member S15 into the screw hole 71h via the screw insertion hole 73g with the inner visible wall portion 73d overlapping the interior side of the inner visible plate portion 71e. The upper frame 61 is attached to the structure B by screwing the screw member S17 into the angle material D via the angle bracket u3.

[0059] As described above, with this mounting structure, the inner circumferential bracket 71 that engages with the central lower claw portion 62b and the auxiliary bracket 72 that engages with the lower claw portion 62b on the indoor side are configured as separate parts. Therefore, the operation of engaging the inner circumferential bracket 71 with the lower claw portion 62b and the operation of engaging the auxiliary bracket 72 with the lower claw portion 62b can be performed individually, making it easier to attach the anchor member 70 to the lower frame 62 and vertical frame 63. Furthermore, since the inner circumferential bracket 71 and the anchor base 73 are molded as separate parts, and the anchor base 73 is interposed between the inner circumferential bracket 71 and the building structure B, the installation work to the building structure B can be performed with the inner circumferential bracket 71 and the auxiliary bracket 72 already attached to the lower frame 62 and vertical frame 63, making the installation work easier. In particular, it is possible to screw in the screw members S14 and S15 that connect the inner circumferential bracket 71 and the anchor base 73 at a position that can be seen from the indoor side, making the above work even easier. In addition, when attaching to the lower frame 62 or vertical frame 63, there is no need to rotate the inner circumferential bracket 71 in the gap between the central lower claw portion 62b and the lower claw portion 62b on the interior side. This allows for a larger width for the inner circumferential bracket 71, thereby improving the mounting strength of the lower frame 62 and vertical frame 63 to the building structure B.

[0060] In the embodiment described above, the second anchor bracket is shown as one that clamps the claw portion between itself and the first anchor bracket, but it is also possible to configure the system so that the claw portion is clamped by the second anchor bracket alone.

[0061] As described above, the frame mounting structure according to the present invention is a frame mounting structure that attaches an anchor member to a frame member and attaches the frame member to a building structure via the anchor member, wherein the frame member is provided with an indoor claw portion and an outdoor claw portion extending in directions toward each other, and the anchor member comprises a first anchor bracket that engages with one of the claw portions and a second anchor bracket that engages with the other claw portion and is connected to the first anchor bracket. According to this invention, since the first anchor bracket that engages with one claw portion and the second anchor bracket that engages with the other claw portion are configured separately, the operation of engaging the first anchor bracket with the claw portion and the operation of engaging the second anchor bracket with the claw portion can be performed individually, thereby simplifying the work. Moreover, since the dimensions of the anchor members are not restricted, sufficient mounting strength of the frame can be ensured without providing a large number of anchor members.

[0062] Furthermore, in the frame mounting structure described above, the present invention is characterized in that the first anchor bracket has a locking portion into which one of the claw portions is inserted and locked, and a contact support portion that contacts one surface of the other claw portion, and the second anchor bracket is connected to the first anchor bracket with the other claw portion positioned between it and the contact support portion. According to this invention, the configuration of the second anchor bracket is simplified, and the operation of engaging it with the other claw portion becomes easier.

[0063] Furthermore, the present invention is characterized in that, in the frame mounting structure described above, the first anchor bracket and the second anchor bracket each have a facing plate portion extending along the facing direction, and are connected to each other by attaching a bracket connector with the facing plate portions overlapping in the depth direction, and the mounting portion of the bracket connector is provided in a position that allows the bracket connector to be attached from the interior side. According to this invention, it becomes possible to attach the bracket connector while the frame is positioned in the opening of the building structure, thereby simplifying the frame installation process.

[0064] Furthermore, in the frame mounting structure described above, the present invention is characterized in that the anchor member is configured separately from the first anchor bracket and comprises an anchor base interposed between the first anchor bracket and the building structure. According to this invention, the mounting position of the frame to the opening in the building structure can be adjusted by changing the connection position between the first anchor bracket and the anchor base.

[0065] Furthermore, the present invention is characterized in that, in the frame material mounting structure described above, the first anchor bracket and the anchor base each have a depth plate portion extending along the depth direction and a face plate portion extending from the depth plate portion in the visible direction, and are connected by attaching a base connector with the face plate portions overlapping in the depth direction. According to this invention, the facing plate can resist external forces along the facing direction, which is advantageous in terms of wind pressure resistance.

[0066] Furthermore, the present invention is characterized in that, in the frame material mounting structure described above, one of the first anchor bracket and the anchor base is provided with an insertion notch, and the other is provided with a protrusion that can be inserted into the insertion notch when the first anchor bracket and the anchor base are brought close to each other, and the protrusion is provided with a base mounting portion for attaching a base connector between one and the other. According to this invention, it is possible to expand the adjustment range between the first anchor bracket and the anchor base.

[0067] Furthermore, the present invention is characterized in that, in the frame mounting structure described above, the anchor base is provided with a mounting piece that connects to the building structure and extends further inward than the frame. According to this invention, it is possible to attach the anchor base to the building structure after positioning the frame in relation to the opening in the building structure. [Explanation of symbols]

[0068] 11,41,61 Upper frame, 11b,41b,61b Upper claw portion, 12,42,62 Lower frame, 12b,42b,62b Lower claw portion, 13,43,63 Vertical frame, 13b,43b,63b Lateral claw portion, 20,30,50,70 Anchor member, 21 Upper inner circumferential bracket, 21c Upper inner visible plate portion, 21d Upper locking plate portion, 21e Upper outer contact piece portion, 21f Upper inner contact piece portion, 21g,22c,32g,51h,71i Screw insertion hole, 21j Upper protrusion portion, 21k Base insertion notch portion, 22 Upper auxiliary bracket, 22a Upper auxiliary base plate portion, 23 Upper anchor base, 23d Upper mounting wall portion, 23e Upper base protrusion portion, 23f Upper base protrusion, 23h screw hole, 23i bracket insertion notch, 31 lower inner circumferential bracket, 31b lower contact piece, 31c lower locking plate, 31d lower contact plate, 31f lower inner facing plate, 32 lower auxiliary bracket, 32a lower auxiliary base plate, 33 lower anchor base, 33d lower mounting wall, 33e lower base protrusion, 51,71 inner circumferential bracket, 51a base plate, 51b locking plate, 51c contact plate, 51d projection plate, 51e outer facing plate, 51f inner facing plate, 52,72 auxiliary bracket, 52a auxiliary base plate, 53,73 anchor base, 53b projection wall, 53c outer facing wall, 53d inner facing wall, 71a base plate, 71b Locking plate section, 71c Contact plate section, 71e Inner facing plate section, 72a Auxiliary base plate section, 73a Base wall section, B Structural frame, S1, S2, S10, S13 Screw members

Claims

1. A frame mounting structure in which anchor members are attached to the frame material, and the frame material is attached to the building structure via the anchor members, The frame material is provided with an indoor claw portion and an outdoor claw portion that extend in directions toward each other. The frame mounting structure is characterized in that the anchor member comprises a first anchor bracket that engages with one of the claw portions and a second anchor bracket that engages with the other claw portion and is connected to the first anchor bracket.

2. The first anchor bracket has a locking portion into which one of the claw portions is inserted and locked, and a contact support portion that contacts one surface of the other claw portion. The frame material mounting structure according to claim 1, characterized in that the second anchor bracket is connected to the first anchor bracket with the other claw portion positioned between it and the contact support portion.

3. The first anchor bracket and the second anchor bracket each have a facing plate portion extending along the facing direction, and are connected to each other by attaching a bracket connector with the facing plate portions overlapping in the depth direction. The frame mounting structure according to claim 1, characterized in that the mounting portion of the bracket connector is provided in a position that allows the bracket connector to be mounted from the interior side.

4. The frame material mounting structure according to claim 1, characterized in that the anchor member is configured separately from the first anchor bracket and comprises an anchor base interposed between the first anchor bracket and the building structure.

5. The frame mounting structure according to claim 4, wherein the first anchor bracket and the anchor base each have a projection plate portion extending along the projection direction and a facing plate portion extending from the projection plate portion in the visible direction, and are connected by attaching a base connector with the facing plate portions overlapping in the projection direction.

6. The frame material mounting structure according to claim 4, characterized in that the first anchor bracket and the anchor base are provided with an insertion notch on one of them, and the other is provided with a projection that can be inserted into the insertion notch when the first anchor bracket and the anchor base are brought close to each other, and the projection is provided with a base mounting portion for attaching a base connector between one and the other.

7. The frame mounting structure according to claim 4, characterized in that the anchor base is provided with an attachment piece that connects to the building structure and extends further inward than the frame material.

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