JP7465701B2 - Retrofit sashes and how to install them - Google Patents

Description

This disclosure relates to retrofit sashes and methods for installing retrofit sashes.

Patent Document 1 discloses a remodeled window structure in which a new frame is installed within an opening formed by an existing frame. This remodeled window structure comprises a new frame attached to the inner periphery of the existing frame, a paper screen installed in the new frame, and an upper cover material, a lower cover material, and a vertical cover material that cover the space between the existing frame and the new frame. The new frame is fixed to the framework with screws. The upper cover material is screwed to an attachment fixed to the new upper frame, the lower cover material is screwed to the new lower frame, and the vertical cover material is screwed to a connecting member fixed to the new vertical frame.

JP 2017-101472 A

The new frame is placed on the inner side of the existing frame, so it may be placed away from the frame components and other parts on the outer side of the new frame. In such cases, it is desirable to be able to stabilize the installation state of the new frame.

The purpose of this disclosure is to provide technology that reduces rattling in renovated sashes.

In order to solve the above problems, one aspect of the present disclosure is a remodeled sash that is installed in an opening in a building, and includes a new frame that is placed on the inner periphery of an existing frame installed in the opening, and a spacer that supports the bottom frame of the new frame from below. The spacer is characterized by being located on the interior side of the new frame.

Another aspect of the present invention is a method for installing a remodeled sash in an opening in a building. This method includes the steps of attaching a cover body to the inner periphery of an existing frame installed in the opening, attaching a new frame to the inner periphery of the cover body, and attaching a spacer that supports the new lower frame of the new frame from below from the inside of the room. In the step of attaching the spacer, with a recess formed in the spacer abutting the lower end of the new lower frame, the spacer is rotated with the lower end as a rotation fulcrum, and the spacer is pushed between the new lower frame and the lower cover frame of the cover body.

FIG. 2 is a longitudinal cross-sectional view of a remodeled sash according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the upper side of the renovated sash of the embodiment. FIG. FIG. 2 is an enlarged cross-sectional view of the underside of a remodeled sash according to an embodiment of the present invention. FIG. 4 is a perspective cross-sectional view of a lower cover frame and a spacer. 11A and 11B are diagrams for explaining a method of attaching a spacer. FIG. 2 is a horizontal cross-sectional view of a retrofit sash according to an embodiment. FIG. 11 is a partial perspective view of the cover body, illustrating the connection of the cover body. This is a schematic diagram to explain how to install a newly installed shoji screen.

Figure 1 is a vertical cross-sectional view of a remodeled sash 1 of an embodiment. The remodeled sash 1 is used as part of a fixture in combination with a new shoji screen 14. A framework 28 is provided in a wall section 2 that separates an indoor space from an outdoor space, forming an opening 4, and the fixture including the remodeled sash 1 is provided on the framework 28. The framework 28 is a framework structure made up of multiple framework members, and is made of materials such as wood or resin that can be screwed in, and supports a frame member 24 and the like. The indoor space and the outdoor space are located on both sides in the forward direction of the new shoji screen 14 that is fitted into the remodeled sash 1.

The renovated sash 1 includes a new frame 10, a new shoji screen 14, a cover body 16, a screen door 18, a decorative material 30, a trim material 32, an attachment 34, a spacer 36, and a connector 39.

The new frame 10 is newly installed for renovation purposes and functions as a frame supporting the new shoji screen 14. The new frame 10 is formed by extrusion molding or the like using metal or resin material, and has a new upper frame 20a, a new lower frame 20b, and a pair of new vertical frames 20c. The new frame 10 is formed into a rectangular shape by connecting the new upper frame 20a, the new lower frame 20b, and the pair of new vertical frames 20c.

The new shoji screen 14 is provided on the inner periphery of the new frame 10 and is slidably attached to the new frame 10. In the example of Figure 1, two new shoji screens 14 are shown, but this is not limited to two, and one or three or more screens may be used. In the following explanation, the thickness direction of the new shoji screen 14 is referred to as the projection direction, and the direction perpendicular to the projection direction is referred to as the sight direction.

The existing frame 12 is a rectangular frame body that has been attached to the main body 28 before the renovation. The existing frame 12 and the frame member 24 are connected. The existing frame 12 has an existing upper frame 22a, an existing lower frame 22b, and a pair of existing vertical frames 22c. The existing frame 12 is formed by extrusion molding or the like from a metal material. The frame member 24 is formed into a rectangle from a plate material.

The decorative material 30, trim material 32 and attachment 34 are provided on the indoor side and cover the space between the new frame 10 and the existing frame 12 from the indoor side. The decorative material 30 is formed in a plate shape and extends along the front direction. The trim material 32 supports one end of the decorative material 30 and is fixed to the frame member 24. The attachment 34 supports the other end of the decorative material 30 and is fixed to the new frame 10. The attachment 34 is fixed to the new frame 10 and limits the movement of the new frame 10 in the front direction.

The connector 39 connects the new upper frame 20a of the new frame 10 to the building structure 28, and the load of the new upper frame 20a can be directly transmitted to the structure 28. "Directly" means that the load of the new upper frame 20a can be directly transmitted to the structure 28 without going through the existing frame 12.

The decorative material 30, trim material 32, and attachment 34 are not limited to being composed of three components, but may be composed of one or two components. The decorative material 30, trim material 32, and attachment 34 are collectively referred to as the decorative components, and constitute the design surface on the interior side of the remodeled sash 1.

The cover body 16 is formed in a rectangular shape and covers the inner circumference and exterior sides of the four sides of the existing frame 12. The cover body 16 also functions to connect to the new frame 10 and the existing frame 12 and attach the new frame 10 to the existing frame 12. In this way, the cover body 16 has the function of covering the existing frame 12 and the function of attaching the new frame 10 to the existing frame 12, so that the sash used during new construction can be used as the new frame 10 for the renovated sash 1 without having to prepare a new frame specifically for the renovated sash, thereby increasing the options for the new frame 10 during renovation. In addition, the number of parts for the renovated sash 1 can be reduced, making the installation process for the renovated sash 1 easier.

Figure 2 is an enlarged cross-sectional view of the upper side of the remodeled sash 1. The existing upper frame 22a of the existing frame 12 has a base plate portion 50, a protruding portion 52, an outer wall portion 54, and a seat portion 55. The base plate portion 50 extends along the upper edge of the opening 4, and in a vertical cross section extends in the forward direction from the outside of the room toward the frame member 24. A pair of protruding portions 52 are formed to protrude downward from the base plate portion 50. The protruding portions 52 functioned as rails to guide the sliding of the existing shoji screen (not shown).

The exterior wall portion 54 is formed to hang down from the outside end of the base plate portion 50. The seat portion 55 is formed at the inside end of the base plate portion 50 and sits on the surface of the frame member 24 so that it catches on it. The seat portion 55 is screwed to the main body 28.

The new upper frame 20a of the new frame 10 has a base plate portion 56, a protruding portion 58, a protruding piece 60, an outer wall portion 62, and a connecting portion 64. The base plate portion 56 extends along the upper edge of the opening 4 and extends in the projection direction in the vertical cross section. The base plate portion 56 is formed of two members and is integrated by being tightened by the connecting portion 64. The protruding portion 58 is formed as a pair so as to protrude downward from the base plate portion 56. The protruding portion 58 functions as a rail that guides the sliding of the newly installed shoji screen 14.

The protruding piece 60 protrudes upward from a midway position on the base plate portion 56, that is, toward the outer periphery in the sight direction. The protruding piece 60 may be formed continuously in a direction perpendicular to the sight direction and the vertical direction, or may be formed with multiple partial protrusions. The protruding piece 60 is located between a pair of protruding portions 58 in the sight direction. The protruding piece 60 has an abutment surface that abuts against the cover body 16. The outer wall portion 62 is formed so as to hang down from the end of the base plate portion 56 on the outside of the room. The protruding piece 60 makes it easy to screw it to the cover body 16.

The upper cover frame 26a of the cover body 16 has a first plate portion 70, a second plate portion 72, a hollow portion 74, a first tapping hole 76a, a second tapping hole 76b, and an attachment portion 78.

The first plate portion 70 of the upper cover frame 26a extends along the upper edge of the opening 4 and extends in the forward direction in the vertical cross section. The first plate portion 70 has a step 70a at the intermediate mounting portion 78, and the step 70a causes the interior side to shift upward and approach the frame member 24. The first plate portion 70 is positioned on the inner periphery of the existing frame 12 and covers the protrusion portion 52 of the existing frame 12.

The second plate portion 72 is connected to the outside end of the first plate portion 70 and extends in the viewing direction. The second plate portion 72 extends from the outside end of the first plate portion 70 toward the outer periphery, covering the outer wall portion 54 of the existing frame 12 and forming a design surface.

The hollow portion 74 is located on the outdoor side of the cover body 16 and forms a hollow hole along the longitudinal direction of the cover body 16. A first tapping hole 76a and a second tapping hole 76b are formed in the hollow portion 74.

The hollow portion 74 is provided in a position that overlaps with the outer periphery of the newly installed frame 10 in the viewing direction. By forming the hollow portion 74 in the upper cover frame 26a, the load-bearing capacity of the renovated sash 1 can be improved, and even if the newly installed shoji screen 14 is exposed to a strong wind and an impact or load is applied upward to the newly installed upper frame 20a, the hollow portion 74 can absorb it.

The mounting portion 78 is located on the indoor side of the hollow portion 74 and has a mounting surface 78a for the new upper frame 20a. The mounting portion 78 protrudes from the first plate portion 70 toward the inner circumference in the viewing direction. The mounting surface 78a faces the indoor side, making it possible to mount the new frame 10 from the indoor side. The mounting surface 78a can be formed wide upward by the step 70a, and a wide surface can be provided to fit the protruding piece 60 of the new upper frame 20a. By providing the mounting portion 78 on the side of the hollow portion 74, the tip of the first screw 40 can be accommodated inside the hollow portion 74. The first screw 40 is located on the outer periphery of the new frame 10.

The indoor end of the first plate portion 70 and the seat portion 55 of the existing upper frame 22a are connected from below by the second screw 42 while facing each other, and are fixed directly to the main body 28. This allows the load of the first plate portion 70 to be transmitted to the main body 28 without going through the existing frame 12. The indoor end of the first plate portion 70 functions as a fixing portion 70b that is fixed to the main body 28. The second screw 42 is screwed in along the upward direction of the viewing direction, penetrating the upper cover frame 26a, the hanging member 38, the existing upper frame 22a, and the frame member 24 in that order, and engaging with the main body 28 located on the outer periphery.

The mounting surface 78a and the protruding piece 60 of the new upper frame 20a are in surface contact and are connected from the inside of the room by the first screw 40. The first screw 40 is screwed in along the projection direction. This allows the new frame 10 to be attached from the inside of the room.

The connector 39 fixes the indoor side base plate portion 56 of the new upper frame 20a to the main body 28, preventing the indoor side end portion of the new upper frame 20a from deforming. The connector 39 has a hanging member 38, an elastic body 41, a second screw 42, and a third screw 44.

Figure 3 is a perspective view of the hanging member 38. The hanging member 38 has a first plate portion 38a, a second plate portion 38b, a connecting plate portion 38c, a notch portion 38d, and a screw hole portion 38e.

The first plate portion 38a and the second plate portion 38b face each other and form parallel plate surfaces. The connecting plate portion 38c connects the first plate portion 38a and the second plate portion 38b. The first plate portion 38a is placed above the fixed portion 70b of the cover body 16. The second plate portion 38b is provided below the first plate portion 38a and is connected to the new upper frame 20a. This allows the new frame 10 to be supported in a suspended state. The fixed portion 70b of the upper cover frame 26a functions as a receiving portion that receives the first plate portion 38a of the hanging member 38.

The cutout 38d is formed so that the edge of the first plate 38a is recessed toward the connecting plate 38c. The cutout 38d opens in the direction away from the connecting plate 38c, making it easier to insert the second screw 42. The screw hole 38e is formed through the second plate 38b.

The elastic body 41 is provided on the lower part of the first plate portion 38a, and is a distance adjustment material that contacts the upper cover frame 26a to adjust the distance between the upper cover frame 26a and the first plate portion 38a, and also serves as a cushioning material. The elastic body 41 is disposed between the first plate portion 38a and the fixing portion 70b of the upper cover frame 26a, and is received by the fixing portion 70b. The elastic body 41 is provided on the lower part of the first plate portion 38a, but may be provided on the upper part of the first plate portion 38a, or may be provided on both the upper and lower parts of the first plate portion 38a.

Because the cutout portion 38d is open, the first plate portion 38a can be inserted from the inside of the room into the gap formed between the existing frame 12 and the cover body 16 into which the second screw 42 has been inserted, i.e., the gap between the fixing portion 70b and the body 28. This allows the hanging member 38 to be positioned with the fixing portion 70b of the cover body 16 secured by the second screw 42.

As shown in FIG. 2, the hanging member 38 is positioned on the outer periphery of the new frame 10, inside the room from the first screw 40. This allows the hanging member 38 to be attached after the new frame 10 is attached to the inner periphery of the cover body 16. The second plate portion 38b is connected to the new upper frame 20a by the third screw 44.

The elastic body 41 is held in an elastically deformed state by tightening the third screw 44. In other words, tightening the third screw 44 lifts the new upper frame 20a upward and applies a downward load to the first plate portion 38a, which elastically deforms the elastic body 41. This makes it possible to adjust the gap between the upper cover frame 26a and the hanging member 38 and to suppress rattling of the new upper frame 20a.

The third screw 44 is disposed at a position overlapping the second screw 42 in the vertical direction.
The two screws do not shift in the depth direction (longitudinal direction of the newly installed upper frame 20a), so the load can be transmitted securely.

The connecting plate portion 38c may connect the indoor end of the first plate portion 38a to the outdoor end of the second plate portion 38b. In other words, the hanging member 38 may be formed in a substantially S-shape in side view.

Figure 4 is an enlarged cross-sectional view of the underside of the remodeled sash 1. The existing lower frame 22b has a first protrusion 52a, a second protrusion 52b, an outer wall 54, and a seat 55. The first protrusion 52a is located on the outside of the room from the second protrusion 52b, and is lower than the second protrusion 52b.

The new lower frame 20b has a base plate portion 56, a protrusion portion 58, a protruding piece 60, a connecting portion 64, a first hollow portion 67, a second hollow portion 68, a foot portion 69a, and a protrusion portion 69b. The first hollow portion 67 and the second hollow portion 68 are formed at the bottom of the base plate portion 56. The first hollow portion 67 and the second hollow portion 68 can improve the load-bearing capacity of the new lower frame 20b.

The first hollow portion 67 is placed on the lower cover frame 26b via a cushioning material. The protruding piece 60 protrudes downward from the first hollow portion 67 at the bottom of the base plate portion 56 and is located between the pair of protruding portions 58 in the front direction. The protruding piece 60 protrudes outward along the front direction.

The foot 69a protrudes downward from the second hollow section 68. The foot 69a is located on the indoor side of the protrusion 58 on the indoor side, and on the indoor side of the new lower frame 20b. The foot 69a abuts against the spacer 36 to support the indoor side of the new lower frame 20b. The protrusion 69b protrudes downward from a position on the outdoor side of the foot 69a, and abuts against the spacer 36.

The lower cover frame 26b has a first plate portion 70, a second plate portion 72, a hollow portion 74, a first tapping hole 77a, a second tapping hole 77b, and an attachment portion 78.

The first plate portion 70 of the lower cover frame 26b extends along the lower edge of the opening 4 and extends in the projection direction in the vertical cross section. The first plate portion 70 is disposed on the inner periphery of the existing frame 12 and covers the protrusion portion 52 of the existing frame 12.

The second plate portion 72 is connected to the outside end of the first plate portion 70 and extends in the viewing direction. The second plate portion 72 extends from the outside end of the first plate portion 70 toward the outer periphery, covering the outer wall portion 54 of the existing frame 12 and forming a design surface.

The hollow portion 74 is located on the exterior side of the cover body 16 and forms a hollow hole along the longitudinal direction of the cover body 16. The hollow portion 74 is provided on the upper part of the first plate portion 70. A first tapping hole 77a and a second tapping hole 77b are formed in the hollow portion 74. By forming a hollow in the lower cover frame 26b, shock can be absorbed and the load-bearing capacity can be improved. In addition, the gap with the new lower frame 20b can be reduced, making it easier to place the new lower frame 20b on the lower cover frame 26b.

The mounting portion 78 is located on the interior side of the hollow portion 74, and has a mounting surface 78a for mounting to the new lower frame 20b. The mounting portion 78 protrudes inward from the first plate portion 70 along the viewing direction. The mounting surface 78a faces the interior side, making it possible to mount the new frame 10 from the interior side. By providing the mounting portion 78 on the side of the hollow portion 74, the tip of the first screw 46 can be accommodated inside the hollow.

The end of the first plate portion 70 facing the interior of the room and the seat portion 55 of the existing lower frame 22b are connected from below by the second screw 42 and fixed to the body 28. The second screw 42 is screwed in along the downward direction of the sight line and is screwed into the body 28 located on the outer periphery.

The mounting surface 78a and the protruding piece 60 of the new lower frame 20b are in surface contact and are connected from the inside of the room by the first screw 46. The first screw 46 is screwed in along the projection direction. This allows the new frame 10 to be attached from the inside of the room.

The height adjustment mechanism 80 is provided on the lower cover frame 26b and is interposed between the lower cover frame 26b and the existing lower frame 22b, and the lower cover frame 26b abuts against the first protrusion portion 52a of the existing lower frame 22b. This allows the new lower frame 20b to be placed on the existing lower frame 22b via the lower cover frame 26b, and the weight of the new shoji screen 14 can be supported by the existing lower frame 22b. The height adjustment mechanism 80 is located below the new shoji screen 14 on the outside of the room, and can suppress deformation of the outside part of the new lower frame 20b.

The height adjustment mechanism 80 has a nut 80a fixed to the lower cover frame 26b and a screw 80b that screws into the nut 80a. When the screw 80b is rotated, the screw 80b is displaced in the up and down direction.

The spacer 36 is located below the new lower frame 20b on the indoor side and supports the new lower frame 20b from below. The spacer 36 abuts against the foot 69a and bears the load of the new lower frame 20b. The spacer 36 is located below the protrusion 58 on the indoor side and bears the load of the new shoji screen 14 supported by the protrusion 58. This makes it possible to suppress deformation of the indoor side of the new lower frame 20b even if the new lower frame 20b is positioned far away from the frame member 24 and the main body 28 and on the inner periphery side.

Figure 5 is a perspective cross-sectional view of the lower cover frame 26b and the spacer 36. The spacer 36 is formed in a hollow cylindrical shape and extends along the lower cover frame 26b. The spacer 36 is located on the interior side of the hollow portion 74 of the lower cover frame 26b and is placed on the first plate portion 70.

The spacer 36 has a screw insertion hole 84 on the side opposite the mounting surface 78a. A first screw 46 is inserted into the screw insertion hole 84. The spacer 36 is fixed to the mounting portion 78 together with the protruding piece 60 of the new lower frame 20b by the first screw 46. The protruding piece 60 is sandwiched between the mounting portion 78 and the spacer 36.

The spacer 36 has a recess 82, a first receiving portion 83a, a second receiving portion 83b, a first abutment rib 85a, and a second abutment rib 85b. The recess 82 is formed with a semicircular cross section on the upper surface and is used to allow the spacer 36 to slip into the foot portion 69a of the new lower frame 20b.

The first receiving portion 83a is formed on the upper surface of the spacer 36 and receives the foot portion 69a of the new lower frame 20b. The first receiving portion 83a is located on the indoor side of the recess 82, and the second receiving portion 83b is located on the outdoor side of the recess 82 and receives the protrusion 69b of the new lower frame 20b. By supporting at two points, the new lower frame 20b can be stably supported.

The first abutment rib 85a and the second abutment rib 85b are formed on the underside of the spacer 36, and the first abutment rib 85a is located closer to the interior than the second abutment rib 85b. The first abutment rib 85a and the second abutment rib 85b have different heights depending on the step of the first plate portion 70, and the second abutment rib 85b abuts against the first plate portion 70 at a position lower than the first abutment rib 85a.

Figure 6 is a diagram for explaining the method of attaching the spacer 36. The spacer 36 is attached after the lower cover frame 26b and the new lower frame 20b are attached to the existing lower frame 22b. A storage chamber A for the spacer 36 is formed below the new lower frame 20b. The vertical length of the spacer 36 is set to be equal to or greater than the gap between the foot portion 69a and the first plate portion 70 so that the spacer 36 can be securely abutted against the new lower frame 20b.

The spacer 36 is moved from the inside of the room to below the newly installed lower frame 20b, and the recess 82 is placed against the lower end of the foot 69a. The spacer 36 is then rotated around the lower end of the foot 69a as a rotation fulcrum, sliding under the foot 69a and pushing it toward the mounting part 78. As a result, the spacer 36 is in a state where it supports the foot 69a and the protrusion 69b, and is fixed to the mounting part 78 together with the protruding piece 60 by the first screw 46.

The spacer 36 has a portion on the exterior side of the recess 82 that is greater in height dimension H2 than the height dimension H1 of the storage chamber A from the foot 69a to the underside of the storage chamber A. That is, the height dimension H1 from the first receiving portion 83a to the first abutting rib 85a shown in FIG. 5 is smaller than the height dimension H2 from the second receiving portion 83b to the second abutting rib 85b. Although the height of the spacer 36 on the exterior side is greater, the portion of height dimension H2 can be easily positioned at the back of the storage chamber A by rotating it while inserting it into the recess 82.

Figure 7 is a horizontal cross-sectional view of the remodeled sash 1 of the embodiment. Since the remodeled sash 1 has a symmetrical shape in the horizontal cross-section, only the left cross-section is shown in Figure 7.

The existing vertical frame 22c has a base plate portion 50, a protruding portion 52, an outer wall portion 54, and a seat portion 55. The new vertical frame 20c has a base plate portion 56 and a protruding piece 60. The protruding piece 60 protrudes from the base plate portion 56 in the outer circumferential direction in the find direction.

The vertical cover frame 26c has a first plate portion 70, a second plate portion 72, a hollow portion 74, and an attachment portion 78. The first plate portion 70 extends along the vertical side of the opening 4 and extends in the projection direction in a horizontal cross section. The first plate portion 70 is disposed on the inner periphery of the existing frame 12 and covers the protrusion portion 52 of the existing frame 12.

The second plate portion 72 is connected to the outside end of the first plate portion 70 and extends in the viewing direction. The second plate portion 72 extends from the outside end of the first plate portion 70 toward the outer periphery, covering the outer wall portion 54 of the existing frame 12 and forming a design surface. The second plate portion 72 also extends from the outside end of the first plate portion 70 toward the inner periphery.

The hollow portion 74 is located on the exterior side of the cover body 16 and forms a hollow hole along the longitudinal direction of the cover body 16. The hollow portion 74 is provided on the outer periphery of the first plate portion 70. By forming a hollow in the vertical cover frame 26c, it is possible to absorb the impact when the newly installed shoji screen 14 hits it when opening or closing it.

The mounting portion 78 protrudes from the first plate portion 70 and has a mounting surface 78a for mounting to the new vertical frame 20c. The mounting portion 78 protrudes from the first plate portion 70 toward the inner circumference in the viewing direction. The mounting surface 78a faces the interior side, making it possible to mount the new frame 10 from the interior side.

With the end of the first plate portion 70 facing the room side and the seat portion 55 of the existing vertical frame 22c facing each other, they are connected from below by the second screws 42 and fixed to the frame 28. The second screws 42 are screwed in along the upward direction in the viewing direction and engage with the frame 28 located on the outer periphery.

The mounting surface 78a and the protruding piece 60 of the new vertical frame 20c are in surface contact with each other and are connected from the inside of the room by the first screw 48. The first screw 48 is screwed in along the projection direction. This allows the new frame 10 to be attached from the inside of the room.

The hanging member 38 functions as a reinforcing member that fixes the indoor side base plate portion 56 of the new vertical frame 20c to the main body 28 and prevents the indoor side portion of the new vertical frame 20c from deforming. The hanging member 38 also limits the movement of the protruding piece 60 and the mounting portion 78 in the finding direction, and prevents the screws of the protruding piece 60 and the mounting portion 78 from becoming loose.

Figure 8 is a partial perspective view of the cover body 16, and is a diagram for explaining the connection of the cover body 16. Each frame of the four sides that make up the cover body 16 is preassembled into a rectangular shape and attached to the existing frame 12 and the main body 28.

The upper cover frame 26a and the lower cover frame 26b are arranged in parallel, and the pair of vertical cover frames 26c are arranged in parallel. Figure 2 shows the upper cover frame 26a and one of the vertical cover frames 26c connected together. The upper cover frame 26a and one of the vertical cover frames 26c are connected together by fixing screws 27.

The first tapping hole 76a and the second tapping hole 76b are formed in the upper cover frame 26a, and a screw insertion hole is formed in the upper end of one of the vertical cover frames 26c. A pair of fixing screws 27 are inserted into the screw insertion holes of one of the vertical cover frames 26c and screwed into the first tapping hole 76a and the second tapping hole 76b, respectively. The opposite end of the upper cover frame 26a is also connected to the other vertical cover frame 26c by the fixing screws 27.

The lower cover frame 26b also has a first tapping hole 77a and a second tapping hole 77b, and the lower ends of the pair of vertical cover frames 26c have screw insertion holes. Both ends of the lower cover frame 26b are connected to the lower ends of the pair of vertical cover frames 26c by fixing screws 27. In other words, the pair of vertical cover frames 26c are connected to both ends of the upper cover frame 26a and both ends of the lower cover frame 26b, respectively. This allows the cover body 16 to be assembled into a rectangular shape.

The cover body 16, assembled into a rectangle, covers the inner periphery of each of the four frames of the existing frame 12 and is fixed to the main body 28, and is connected to each of the frames of the new frame 10. The assembly of the cover body 16 is not limited to screw fastening using tapping holes, and it may be connected using, for example, an L-shaped attachment.

Figure 9 is a schematic diagram for explaining the installation method of the new shoji screen 14. The frames constituting the four sides of the cover body 16 are connected to assemble the cover body 16 into a rectangle. The new frame 10 is also assembled into a rectangle. The assembly work of the new frame 10 and the cover body 16 may be performed in a factory or at the installation site.

The assembled cover body 16 is moved to the inner periphery of the existing frame 12 and screwed to the main body 28 together with the seating portion 55 of the existing frame 12. A first seal material 86 is provided between the first plate portion 70 of the cover body 16 and the seating portion 55 of the existing frame 12.

The first sealant 86 is, for example, a waterproof tape that is attached around the entire circumference of the seating portion 55 or the first plate portion 70 and is sandwiched between the seating portion 55 and the first plate portion 70. The first sealant 86 is adhered to the existing frame 12 and the cover body 16 by the axial force of the second screw 42, improving the sealing performance. The first sealant 86 may be attached so as to seal the gap between the existing frame 12 and the cover body 16 from the inside of the room.

Next, the new frame 10 is moved from the inside of the room toward the outside of the room toward the inner periphery of the cover body 16. The mounting surface 78a of the mounting portion 78 faces the inside of the room, and the abutment surface 60a of the protruding piece 60 faces the outside of the room. The abutment surface 60a of the protruding piece 60 comes into surface contact with the mounting surface 78a of the mounting portion 78, and they are connected by the first screw 40. Workers can install the new frame 10 from the inside of the room, making work easy even on the second floor or higher.

The second sealing material 88 is, for example, a waterproof tape, which is attached around the entire circumference of the mounting portion 78 or the protruding piece 60 and is sandwiched between the mounting portion 78 and the protruding piece 60. The second sealing material 88 is in close contact with the cover body 16 and the new frame 10 by the axial force of the first screw 40, improving the sealing performance. Note that the first sealing material 86 and the second sealing material 88 are not limited to waterproof tape, and may be a waterproof sheet, or a combination of waterproof tape and waterproof sheet.

Note that the examples are merely illustrative, and various modifications are possible in the combination of each component, and it will be understood by those skilled in the art that such modifications are also within the scope of this disclosure. Therefore, the descriptions and drawings in this specification should be treated as illustrative rather than restrictive.

For example, in the embodiment, the cover body 16 is pre-assembled into a rectangle and placed on the inner periphery of the existing frame 12, but this is not limited to the above, and each frame of the cover body 16 may be placed individually on the inner periphery of the existing frame 12, or the cover body 16 may be placed partially without being connected. Also, the part of the cover body 16 that covers the visible surface on the outdoor side of the existing frame 12 and the part that covers the visible surface side of the existing frame 12 are integrated, but separate members may be connected and used.

In addition, in the embodiment, the remodeled sash 1 is used for a sliding window, but this is not limited to the embodiment. For example, the remodeled sash 1 can be used for windows with shutters, windows with storm shutters, vertical sliding windows, bathroom windows, etc. Furthermore, even if the first protrusion 52a is located on the exterior side of the second protrusion 52b and the existing sill 22b is the same height as or higher than the second protrusion 52b, the new sill 10 can be attached using the cover body 16 in the embodiment.

In addition, in the embodiment, the lower cover frame 26b is a single member, but this is not limited to this. For example, the first plate portion 70 and the second plate portion 72 may be separate bodies, and the second plate portion 72 may be detachable from the first plate portion 70.

1 Renovated sash, 4 Opening, 10 New frame, 12 Existing frame, 14 New shoji screen, 16 Cover body, 20a New upper frame, 20c New vertical frame, 20b New lower frame, 22a Existing upper frame, 22b Existing lower frame, 22c Existing vertical frame, 26a Upper cover frame, 26b Lower cover frame, 26c Vertical cover frame, 28 Body, 36 Spacer, 38 Hanging member, 38a First plate portion, 38b Second plate portion, 38d Notch portion, 50 Base plate portion, 52 Protruding portion, 56 Base plate portion, 58 Protruding portion, 60 Protruding piece, 69 Foot portion, 70 First plate portion, 72 Second plate portion, 74 Hollow portion, 78 mounting portion, 78a mounting surface, 82 recess.

Claims (5)

A retrofit sash installed at an opening in a building,
A new frame is disposed on an inner peripheral side of an existing frame provided in the opening;
A spacer that supports the lower frame of the new frame from below;
A cover body covering an inner periphery side of the existing frame is provided between the new frame and the existing frame ,
The spacer is located on the indoor side of the new frame,
The lower frame has a foot portion protruding downward,
The spacer is
A first receiving portion provided on an upper surface thereof for receiving the foot portion;
A recess is provided on the upper surface on the outdoor side of the first receiving portion,
A retrofit sash , characterized in that the spacer is fixed to the cover body . The remodeled sash according to claim 1, characterized in that the recess is formed with a semicircular cross section. The remodeled sash according to claim 2, characterized in that the spacer has a second receiving portion provided on the upper surface outside the recess and receiving a part of the lower frame. A chamber for accommodating the spacer is formed below the lower frame,
The remodeled sash according to any one of claims 1 to 3, characterized in that the spacer has a portion on the exterior side of the recess that has a height dimension greater than the height dimension of the storage chamber from the foot to the underside of the storage chamber. A method for installing a remodeled sash installed in an opening of a building, comprising the steps of:
Attaching a cover body to an inner periphery of an existing frame provided in the opening;
Attaching a new frame to the inner periphery of the cover body;
and a step of attaching a spacer from the indoor side to support the new lower frame of the new frame from below,
In the step of attaching the spacer,
A method for installing a renovated sash, characterized in that with a recess formed in the spacer abutting the lower end of the newly installed lower frame, the spacer is rotated around the lower end as a rotation fulcrum, and the spacer is pushed between the newly installed lower frame and the lower cover frame of the cover body.

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