JP7131749B2 - Sash frame installation structure - Google Patents

Description

The present invention relates to an installation structure for a sash frame.

Patent Literature 1 discloses a sash frame installation structure in which a sash frame is fixed along the lower end of an opening formed in an outer wall of a building. In the structure described in the document, a sash frame that supports the sash and a parting material (coating plate) that covers the gap between the sash frame and the indoor floor panel are fixed to the floor panel via spacers. . Specifically, a stepped portion for fixing the sash frame and one end of the spacer is provided at one end of the floor panel, and a stepped portion for fixing the other end of the spacer is provided on the indoor side of the fixed stepped portion. ing.

In addition, since a gap including the fixed stepped portion and the stepped portion is generated between the sash frame and the floor panel, the design is ensured by covering the gap with the parting material fixed to the upper end of the spacer.

JP-A-10-205222

However, in the prior art described above, the fixed portion of the sash frame and the spacer is secured by the stepped portion provided on the floor panel, so the gap between the sash frame and the floor panel tends to expand. As a result, the parting material that covers the gap is increased in size, and there is a risk that the design will deteriorate. Therefore, the prior art described above has room for improvement in this respect.

SUMMARY OF THE INVENTION In consideration of the above facts, it is an object of the present invention to provide a structure for installing a sash frame in an opening formed in an outer wall of a building, which has an excellent indoor design.

A sash frame installation structure according to a first aspect includes a sash base extending along the lower end of an opening formed in an outer wall of a building, and a floor base having one end placed on the sash base. a sash frame main body portion disposed on the outdoor side of the underfloor material and elongated along the lower end portion of the opening; and a side surface of the sash frame main body portion extending to the indoor side. a sash frame extending and fixing part fixed on the sash base on the outdoor side of the one end of the underfloor material; and the sash frame on the building upper side of the sash frame extending and fixing part. a parting member including a parting portion extending indoors from the side surface of the main body; and a floor material arranged on the building lower side of the parting part.

In the sash frame installation structure according to the first aspect, the sash base extends along the lower end of the opening formed in the outer wall of the building, and the sash frame extends over the sash base. One end of the fixed part and the underfloor material is placed. Further, a floor material is placed on the underfloor material. Moreover, a parting member including a parting part extending from the side surface of the sash frame main body to the indoor side is arranged on the building upper side of the sash frame extension fixing part. Thus, the gap between the side surface of the sash frame main body and the outer end of the floor material is covered by the parting part of the parting material.

Here, in the present invention, the outer end of the flooring material is arranged on the lower side of the building at the parting part in a state in which the outer end portion of the flooring material protrudes further to the outside than the one end of the underfloor material. That is, the floor material can be arranged so as to cover the sash frame extended fixing portion of the sash frame and one end of the underfloor material from the upper side of the building. For this reason, for example, when one end of the underfloor material and the end surface of the outer end of the floor material are flush with each other, or when the outer end of the floor material is arranged on the indoor side of the one end of the floor material, a stepped portion is formed. The gap between the sash frame main body and the flooring material is smaller than when it is formed. As a result, an increase in the size of the parting material that covers the gap is suppressed.

A sash frame installation structure according to a second aspect is the configuration according to the first aspect, wherein the parting material extends downward from the parting part and an outdoor end part of the parting part to the lower side of the building, A fixing portion fixed to the side surface of the sash frame main body, and a support portion extending indoors from a lower end of the fixing portion and supporting the outer end portion of the floor material from below. , has an opening cross section that is open to the indoor side in a longitudinal cross-sectional view.

In the sash frame installation structure according to the second aspect, the parting material is fixed to the sash frame main body by the fixing part integrally formed at the outdoor end of the parting part. As a result, the number of members can be reduced compared to a configuration in which the parting member is fixed to the sash frame main body via a separate member. In the parting material, the outer end of the flooring material is supported from the lower side of the building by the supporting part by inserting the outer end of the flooring into the inside of the opening cross section formed by the parting part, the fixing part, and the supporting part. can do. Thereby, it is possible to suppress deformation of the outer end portion of the floor material due to a load input to the floor material from the upper side of the building.

A sash frame installation structure according to a third aspect is the configuration according to the second aspect, wherein the parting member extends downward from the lower surface of the support portion to the lower side of the building, and the sash base or the sash frame extension It includes a positioning portion supported by the fixed portion.

In the sash frame installation structure according to the third aspect, the lower surface of the support portion of the parting timber is provided with a positioning portion that extends toward the lower side of the building, and the sash base or sash positioned on the lower side of the building of the parting timber is provided. It is supported by the frame extension fixed part. Thereby, the positioning part can position the parting member in the height direction of the building with respect to the sash base or the sash frame main body part. As a result, the parting material can be easily fixed at a predetermined position of the sash frame, so that the construction period can be shortened and the assembly accuracy can be improved.

A sash frame installation structure according to a fourth aspect is the configuration according to the first aspect, wherein the parting member includes an upper member including the parting portion fixed to the upper surface of the sash base; and the sash frame main body. a fixed part fixed to the side surface of the part, and a support formed integrally with the fixed part, extending from the lower end of the fixed part to the indoor side and supporting the outer end of the floor material from the lower side of the building. and a lower member comprising a portion.

In the sash frame installation structure according to the fourth aspect, the parting member is divided into an upper member and a lower member, the upper member having the parting part is fixed to the upper surface of the floor material, and the lower member having the supporting part is fixed to the sash frame main body through the fixing portion. For this reason, after fixing the lower member to the sash frame main body and placing the outer end of the floor material on the upper side of the support part, the parting part is arranged so as to cover the gap between the sash frame and the floor material. can be used to secure the upper member to the upper surface of the flooring. Therefore, even if the thickness of the flooring material varies due to individual differences in products, the parting part can be brought into contact with the upper surface of the flooring material and fixed. can be reduced. In addition, since a common parting material can be applied to many types of floor materials having different thicknesses and materials, an installation structure with excellent versatility can be achieved.

As described above, according to the installation structure of the sash frame according to the first aspect, it is possible to suppress an increase in the size of the parting material and to improve the design of the indoor side.

The installation structure of the sash frame according to the second aspect has an excellent effect of suppressing an increase in the number of parts and suppressing deformation of the outer end portion of the floor material.

The installation structure of the sash frame according to the third aspect has the excellent effects of shortening the construction period and improving the assembly accuracy.

The installation structure of the sash frame according to the fourth aspect has the excellent effects of further improving the design of the indoor side and providing an installation structure with excellent versatility.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the building to which the installation structure of the sash frame which concerns on 1st Embodiment was applied. 2 is a partially enlarged cross-sectional view showing a state cut along line 2-2 in FIG. 1; FIG. FIG. 3 is a partially enlarged cross-sectional view corresponding to FIG. 2 showing a modification of the installation structure of the sash frame according to the first embodiment; FIG. 3 is a partially enlarged cross-sectional view corresponding to FIG. 2 showing a modification of the installation structure of the sash frame according to the first embodiment; FIG. 3 is a partially enlarged cross-sectional view corresponding to FIG. 2 showing a modification of the installation structure of the sash frame according to the first embodiment; 3 is a partially enlarged cross-sectional view corresponding to FIG. 2, showing an installation structure of a sash frame according to a second embodiment; FIG.

[First Embodiment]
A building 10 to which the sash frame installation structure according to the first embodiment is applied will be described below with reference to FIGS. 1 and 2. FIG. FIG. 1 is a perspective view showing the appearance of a building 10. FIG. FIG. 2 also shows a cross-sectional view of part of the lower end of the opening 14 formed in the outer wall 12 of the building 10 .

As shown in these figures, the first floor portion 10A of the building 10 is provided with an opening 14 which has a substantially rectangular shape when viewed from the front, in the outer wall portion 12 . A discharge window 16 is attached to the opening 14 . The sweep window 16 has a lower end in contact with the indoor floor 18 of the building 10, and includes an inner shoji 20 arranged on the indoor side, an outer shoji 22 arranged on the outdoor side, an inner shoji 20 and an outer shoji 22. and a sash frame 30 that supports the to be openable and closable.

Note that the floor portion 18 of the building 10 is, for example, a floor frame including a plurality of floor beams (not shown) forming the frame of the building 10 and small floor beams (not shown) spanning between the floor beams. (not shown). A plurality of floor joists 24 are arranged along the floor beams on the upper side of the building of the floor frame. A panel-shaped underfloor material 26 is laid on the upper side of the joists 24 , and a floor material 28 constituting the design surface of the floor section 18 is laid on the upper side of the underfloor material 26 .

For the floor portion 18 having the above structure, the floor frame, the floor joists 24, and the underfloor member 26 are assembled in advance at the production factory to form a floor panel (reference numerals omitted). By transporting the floor panel to the construction site and laying the floor material 28 on the underfloor material 26, the construction of the floor section 18 is completed.

(Structure of sash frame 30)
As shown in FIG. 1, the sash frame 30 extends in the height direction of the building and connects a pair of vertical frames 32 arranged in parallel with a predetermined interval and the upper ends of the pair of vertical frames 32. The upper frame 34 and the lower frame 36 connecting the lower ends of the pair of vertical frames 32 form a rectangular frame shape when viewed from the front. The sash frame 30 is placed in the opening 14 of the outer wall 12 and supported by a rectangular opening frame (not shown) fixed to beams and columns (not shown) forming the skeleton of the building 10 .

A rail portion (not shown) is formed on the upper frame 34, and the upper end portions of the inner shoji 20 and the outer shoji 22 are fitted to the rail portion, and the inner shoji 20 and the outer shoji 22 are supported so that they can be opened and closed. ing.

The lower frame 36 is arranged parallel to the upper frame 34 on the building lower side of the upper frame 34 and is elongated along the lower end of the opening 14 formed in the outer wall 12 . The lower frame 36 is formed integrally with a sash frame main body portion 38 fixed to the lower end portion of the opening frame (not shown) and the sash frame main body portion 38 , and fixed to the joist 24 constituting the floor portion 18 of the building 10 . It is configured including an extension fixing portion 40 .

As partly shown in FIG. 2, the sash frame main body 38 is formed to have a closed cross section, constitutes the side surface of the sash frame main body 38 on the indoor side, and extends in the height direction of the building. and an upper surface portion 38B extending substantially horizontally from the upper portion of the vertical side surface portion 38A to the outdoor side. A pair of rail portions 38C are formed to stand on the upper side of the building from the upper surface of the upper surface portion 38B. The lower end portions of the inner shoji 20 and the outer shoji 22 are respectively fitted to the pair of rail portions 38C, and the inner shoji 20 and the outer shoji 22 are supported so as to be openable (slidable). Note that the vertical side surface portion 38A corresponds to the "side surface of the sash frame main body" in the present invention.

A sash frame extension fixing portion 40 is integrally formed at the lower portion of the vertical side portion 38A. The sash frame extension fixing portion 40 includes a flat portion 40A that extends substantially horizontally toward the indoor side from the lower portion of the vertical side portion 38A, and a leg portion that extends downward from the indoor end of the flat portion 40A. 40B and. The sash frame extension fixing part 40 is attached from the outside to the joist 24 of the floor part 18 arranged along the lower end part of the opening part 14 . Specifically, the legs 40B are placed on the upper surface 24A of the joist 24, and fixed by driving the screws 42 into the plane portion 40A from the upper side of the building. Note that the joist 24 corresponds to the "sash base" in the present invention.

As shown in FIG. 2 , an outdoor end 26A (one end) of the underfloor member 26 is placed on the joist 24 on the indoor side of the sash frame extension fixing portion 40 . Although not shown, a frame fixing portion is provided at the lower portion of the sash frame body portion 38 and fixed to the lower end portion of the opening frame (not shown) from the outside of the building 10 .

(Main part of the present invention)
A parting member 44 is fixed to the upper portion of the vertical side portion 38A of the sash frame body portion 38 on the indoor side. The parting member 44 is elongated along the extending direction of the sash frame main body 38 and has an opening cross section that is open to the indoor side when viewed in vertical cross section. Specifically, a parting portion 46 extending substantially horizontally from the vertical side portion 38A to the indoor side, a fixed portion 48 extending from the outdoor end portion of the parting portion 46 toward the lower side of the building, and a fixed portion 48 It has a substantially U-shaped cross section with a support portion 50 extending substantially horizontally from the lower end portion of the housing to the indoor side. The parting member 44 is fixed to the vertical side surface portion 38A of the sash frame body portion 38 by driving a screw 52 into the fixing portion 48 from the indoor side. The parting material 44 is arranged so that the upper surface of the support portion 50 is substantially flush with the upper surface of the underfloor material 26 above the above-described underfloor material 26 on the outdoor side of the building.

Here, as shown in FIG. 2, the floor material 28 placed on the underfloor material 26 has an outer end portion 28A arranged along the sash frame body portion 38 (opening portion 14). It protrudes to the outdoor side from the outdoor side end portion 26A of the base material 26. - 特許庁The outer end portion 28A of the floor material 28 is inserted inside the parting material 44. As shown in FIG. From the viewpoint of reducing the step between the parting material 44 and the upper surface of the flooring material 28, the space between the parting part 46 and the support part 50 in the height direction of the building is substantially the same as the plate thickness dimension of the flooring material 28. is preferred.

In this state, the gap G1 between the sash frame main body 38 and the outer end 28A of the floor material 28 is covered with the parting part 46 of the parting material 44 from above the building. Furthermore, the support portion 50 of the parting material 44 supports the outer end portion 28A of the floor material 28 from the lower side of the building.

The parting material 44 configured as described above is carried into the construction site without being fixed to the sash frame 30 . At a building site, a sash frame 30 is fixed to the joist 24 after the floor panel assembled with the joist 24 and the underfloor material 26 is installed. After that, the parting material 44 is fixed to the vertical side part 38A of the sash frame body part 38, the flooring material 28 is laid on the underfloor material 26, and the outer end part 28A of the flooring material 28 is arranged inside the parting material. be done. This completes the construction of the sash frame 30 and the floor section 18 .

(action/effect)
Next, the operation and effects of the first embodiment will be described.

As shown in FIG. 2, a joist 24 extends along the lower end of the opening 14 formed in the outer wall 12 of the building 10, and a sash frame 30 is extended and fixed on the joist 24. 26 A of outdoor side edge parts of the part 40 and the underfloor material 26 are mounted. Further, a floor material 28 is placed on the underfloor material 26 . A parting member 44 is fixed to the vertical side surface portion 38A of the sash frame main body portion 38, and the gap G1 between the sash frame main body portion 38 and the outer end portion 28A of the floor material 28 is covered with the parting portion 46. Thereby, in the indoor space of the building 10, the gap G1 generated between the lower end portion of the sweep window 16 and the floor portion 18 is not visually recognized.

Here, in the present embodiment, the outer end portion 28A of the floor material 28 is arranged on the building lower side of the parting portion 46 in a state in which the outer end portion 28A protrudes further to the outdoor side than the outdoor end portion 26A of the subfloor material 26 . That is, the floor material 28 can be arranged so as to cover the sash frame extension fixing portion 40 of the sash frame 30 and one end of the underfloor material 26 from the upper side of the building. For this reason, for example, when the end face of the outdoor end of the underfloor material and the end face of the outer end of the floor material are formed flush with each other, or the outer end of the floor material is arranged on the indoor side of one end of the floor material. The gap G1 between the sash frame main body 38 and the floor material 28 is smaller than in the case of forming the stepped portion. As a result, the size of the parting material covering the gap G1 is suppressed, so that the design of the indoor space of the building 10 can be further improved.

Further, in this embodiment, the parting member 44 includes a parting portion 46 and a fixing portion 48 integrally formed, and the fixing portion 48 is fixed to the sash frame body portion 38 . As a result, the number of members can be reduced compared to a configuration in which the parting member 44 is fixed to the sash frame main body 38 via another member. As a result, in addition to a reduction in material costs, construction costs can be reduced by shortening the construction period. Further, the outer end portion 28A of the floor material 28 is inserted inside the opening section formed by the parting portion 46 of the parting material 44, the fixing portion 48, and the support portion 50, and the floor material 28 is 28 A of edge parts are supported from the building lower side. Thereby, when a load is input to the outer end portion 28A of the flooring 28 from the upper side of the building, deformation of the outer end portion 28A of the flooring 28 can be suppressed.

Furthermore, in this embodiment, the parting part 46 of the parting material 44 is supported from the lower side of the building by the upper surface of the floor material 28 . This enhances the support rigidity of the parting material. As a result, even if a load is applied to the parting part 46 from the upper side of the building, deformation of the parting material 44 can be suppressed by being supported by the outer end part 28A of the floor material 28 from below.

Further, in this embodiment, the parting member 44 is fixed to the sash frame 30 via the fixing portion 48 arranged along the vertical side portion 38A of the sash frame body portion 38 . Therefore, since the screws 52 for fixing the parting material 44 are not exposed on the design surface of the indoor space of the building 10, the design is excellent.

(Modification 1)
Next, Modification 1 of the parting member 44 of the first embodiment will be described with reference to FIG. FIG. 3 shows a partially enlarged cross-sectional view of the installation structure of the sash frame 30 to which the parting member 60 is applied as Modification 1. As shown in FIG. As shown in this figure, the parting member 60 basically has the same configuration as the parting member 44 of the first embodiment, but differs in that a positioning portion 62 is formed on the lower surface of the support portion 50. .

The positioning portion 62 extends from the indoor-side end portion of the lower surface of the support portion 50 toward the lower side of the building. The lower end of the positioning portion 62 is inserted between the sash frame extension fixing portion 40 of the sash frame main body portion 38 and the underfloor member 26 and is supported by the joists 24 from below.

In the parting member 60 configured as described above, the positioning portion 62 fixes the position of the parting member 60 with respect to the sash frame 30 in the height direction of the building. As a result, the parting material 60 can be easily fixed to the predetermined position of the sash frame 30, so that the construction period can be shortened and the assembly accuracy can be improved.

(Modification 2)
Moreover, the effect of the above invention can be realized by the parting member 70 according to Modification 2 shown in FIG. In the parting member 70 , a positioning portion 72 is formed at the outdoor end portion of the lower surface of the support portion 50 so as to extend toward the lower side of the building. The positioning portion 72 has a lower end in contact with the flat portion 40A of the sash frame extension fixing portion 40 of the sash frame 30 . As a result, the parting material 70 is supported by the sash frame extension fixing portion 40 from the lower side of the building, and the position of the parting material 70 in the building height direction with respect to the sash frame 30 is fixed.

(Modification 3)
Next, a modification 3 of the parting member 44 of the first embodiment will be described with reference to FIG. FIG. 5 shows a partially enlarged cross-sectional view of the installation structure of the sash frame 30 to which the parting member 80 is applied as Modified Example 3. As shown in FIG. As shown in this figure, the parting member 80 has the same configuration as the parting member 44 according to the first embodiment in that it includes a parting portion 82 , a fixing portion 84 and a support portion 86 . However, the plate thickness T1 of the parting portion 82 that covers the gap G1 between the sash frame 30 and the floor material 28 is set to be thinner than the plate thickness T2 of the support portion 86 that supports the floor material 28 from the lower side of the building. different in that

According to the above configuration, by reducing the plate thickness of the parting part 82, the level difference between the parting material 80 and the floor material 28 can be further reduced, thereby suppressing excessive unevenness on the design surface. can be done. Thereby, the design of the opening 14 in the indoor space of the building 10 can be further improved. On the other hand, since the plate thickness of the support portion 86 is sufficiently secured, the support rigidity of the outer end portion 28A of the floor material 28 is increased, and the distortion of the floor material 28 near the opening 14 and the parting portion 82 of the parting material 80 are prevented. deformation can be further suppressed. Further, in this way, the plate thickness can be optimized corresponding to the functions of the parting part 82 and the support part 86, and the weight of the parting material 80 can be reduced.

Even without increasing the plate thickness of the support portion, the strength of the support portion may be increased by providing the support portion with ribs to increase the support rigidity of the outer end portion 28A of the flooring 28 by the support portion.

(Modification 4)
Furthermore, although not illustrated, in this embodiment, a fourth modification in which a spacer member is arranged on the upper surface of the support portion 50 of the parting member 44 of the first embodiment may be applied. The spacer member is made of an elastic material, and can be made of, for example, a sponge made of urethane or polyethylene. According to this configuration, since the spacer member is arranged on the upper surface of the support portion 50, when the outer end portion 28A of the floor material 28 is inserted between the parting portion 46 and the support portion 50, the floor material 28 is supported by the spacer member. is lifted to the parting part 46 side. As a result, an unnecessary gap is less likely to occur between the parting part 46 and the floor material 28 on the lower side, and a step between the parting part 46 and the design surface of the upper surface of the floor material 28 can be reduced. . As a result, the design of the indoor side of the sash frame 30 can be further improved.

Furthermore, since the spacer member is made of an elastic material, the thickness of the floor material 28 due to individual differences in products and the difference in thickness due to different types of floor materials can be absorbed while maintaining It is possible to suppress the generation of an unnecessary gap between the floor material 28 and the floor material 28 on the side. Therefore, the versatility of the parting material 44 can be enhanced.

[Second embodiment]
A second embodiment of the present invention will be described below with reference to FIG. In addition, about the same component part as 1st Embodiment mentioned above, the same number is attached and the description is abbreviate|omitted.

This embodiment is characterized in that the parting member 90 fixed to the sash frame 30 is divided into a plurality of elements, that is, an upper member 92 and a lower member 94 . Specifically, the upper member 92 is configured as a portion corresponding to the parting portion 46 described in the first embodiment. Also, the lower member 94 is configured as a portion corresponding to the fixing portion 48 and the support portion 50 described in the first embodiment.

The upper member 92 is a plate elongated along the sash frame 30 and has a parting portion 92A. This upper member 92 is fixed to the upper surface of the floor material 28 using a plurality of screws 93 .

The lower member 94 elongates along the sash frame 30 and has an L-shape in vertical cross-section. Specifically, a fixed portion 94A that is arranged on the indoor side of the vertical side portion 38A of the sash frame body portion 38 and extends in the height direction of the building, and a support that extends indoors from the lower end portion of the fixed portion 94A. and a portion 94B. The lower member 94 is fixed to the vertical side surface portion 38A by screws 52 driven into the indoor side of the fixing portion 94A.

After fixing the lower member 94 to the sash frame main body portion 38 at the building site, the parting material 90 places the outer end portion 28A of the floor material 28 on the support portion 94B. Thereafter, by fixing the upper member 92 to the upper surface of the outer end portion 28A of the flooring 28, the construction of the sash frame 30 and the floor portion 18 is completed.

(action/effect)
Since the parting member 90 having the above configuration basically follows the configuration of the parting member 44 according to the first embodiment, it is possible to obtain the same actions and effects.

Further, according to the above configuration, as shown in FIG. 6, if a gap G2 is formed between the upper end of the fixing portion 94A and the lower surface of the parting portion 92A, the thickness of the flooring material 28 varies due to individual differences in products. Even if this occurs, the gap G2 absorbs such variations, and the parting portion 92A can be brought into contact with the upper surface of the flooring 28 and fixed. This prevents the formation of a gap between the upper member 92 and the floor material 28 on the lower side of the upper member 92 (parting portion 92A), and reduces the step between the upper surface of the floor material 28 and the upper member 92. can be done. In addition, since the common parting member 90 can be applied to many types of floor materials having different thicknesses and materials, an installation structure with excellent versatility can be achieved.

[supplementary explanation]
In each of the above embodiments, the installation structure of the sash frame of the present invention is applied to the opening 14 for the sweep window 16 formed in the first floor portion 10A of the building 10, but the present invention is not limited to this. It may be applied to openings for balconies formed in upper floors of buildings.

In addition, although the parting member 44 according to the first embodiment is configured to have a substantially U-shaped cross section, the present invention is not limited to this, and the support part 50 of the parting member 44 is omitted and the cross section It may be formed in a substantially L shape.

In each of the above-described embodiments, the joist 24 is used as the sash base, but the present invention is not limited to this, and the sash base may be a floor beam, a small floor beam, or a large drawer.

10 building 12 outer wall 14 opening 24 joist (sash base)
24A upper surface 26 underfloor material 26A outdoor end (one end)
28 floor material 28A outer end 30 sash frame 38 sash frame main body 38A vertical side (side surface of sash frame main body)
40 sash frame extension fixing part 44 parting material 46 parting part 48 fixing part 50 support part 60 parting material 62 positioning part 70 parting material 72 positioning part 80 parting material 82 parting part 84 fixing part 86 supporting part 90 parting material 92 upper member 92A parting part Part 94 Lower member 94A Fixed part 94B Support part

Claims (3)

a sash base extending along the lower edge of the opening formed in the exterior wall of the building;
an underfloor material having one end placed on the sash base;
a sash frame main body disposed on the outdoor side of the underfloor material and elongated along the lower end of the opening; a sash frame extension fixing portion fixed on the sash base on the outdoor side of the one end of the underfloor material;
a parting member including a parting part extending from the side surface of the sash frame main body to the indoor side on the building upper side of the sash frame extension fixing part;
a flooring material that is placed on the underfloor material, has an outer end projecting to the outside from the one end of the underfloor material, and is arranged on the building lower side of the parting part ;
The parting material is
an upper member including the parting portion fixed to the upper surface of the sash base;
a fixed portion fixed to the side surface of the sash frame main body portion; a lower member comprising a support that supports from
made up of
Installation structure of the sash frame. The parting material is
a parting part, a fixed part extending downward from the outside end of the parting part and fixed to the side surface of the sash frame main body part, and a part extending from the bottom end of the fixing part to the indoor side. and a support portion that supports the outer end portion of the floor material from below,
Having an opening cross section that is open to the indoor side in a vertical cross-sectional view,
The installation structure of the sash frame according to claim 1. The parting material extends from the lower surface of the support part toward the lower side of the building and includes a positioning part supported by the sash base or the sash frame extension fixing part.
The installation structure of the sash frame according to claim 2.

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