Modified Sash and Its Mounting Method

Abstract

To provide a refurbishing sash capable of improving mountability.SOLUTION: A refurbishing sash 100 to be provided to an opening of a building includes: a cover body 116 that is attached to an inner circumferential side of an existing frame 12 provided at the opening and covers the inner circumferential side of the existing frame 12; a new frame 10 placed on an inner circumference side of the cover body 116; and a height adjustment mechanism 180 to be provided on a lower frame of the cover body 116 and is capable of being displaced in a vertical direction. The height adjustment mechanism 180 is capable of contacting a lower frame of the existing frame by displacing the same vertical.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present disclosure relates to a modified sash And its mounting method .

Background Art

[0002] Patent Document 1 discloses a modified window structure in which a new frame is provided within an opening formed by an existing frame. This modified window structure includes a new frame attached to the inner peripheral side of the existing frame, a shoji provided on the new frame, and upper, lower, and vertical cover members that cover the space between the existing frame and the new frame. The new frame is fixed to the building body with screws. The upper cover member is screwed to an attachment fixed to the new upper frame, the lower cover member is screwed to the new lower frame, and the vertical cover member is screwed to a connecting member fixed to the new vertical frame. These cover members are supported by the new frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1, since the existing lower frame does not receive a load at a position outside the new lower frame on the outdoor side, there is a risk that the outdoor side portion of the new lower frame may deform. Therefore, a mechanism for connecting the new lower frame and the existing lower frame may be provided, but it is desirable that the attachment of the mechanism be easy.

[0005] An object of the present disclosure is to provide a technique capable of improving the attachability of a modified sash.

Means for Solving the Problems

[0006] To solve the above problems, in one aspect of the present disclosure, there is a retrofit sash provided in an opening of a building, including a cover body attached to the inner peripheral side of an existing frame provided in the opening, a new frame disposed on the inner peripheral side of the cover body, and a height Cover adjusting mechanism provided on the lower Height frame. The height adjusting mechanism is Height adjustment capable of abutting against the lower frame of the existing frame. The cover body is formed in a rectangular shape. The lower cover frame has a mounting portion that protrudes inward in the finding direction. The new lower frame of the new frame has a protruding piece that is connected by a screw from the interior while facing the mounting portion. Another aspect of the present disclosure is a method for installing a retrofit sash provided in an opening of a building. This method includes the steps of attaching a cover body formed in a rectangular shape to the inner peripheral side of an existing frame provided in the opening, and A step of connecting, from the interior, a protruding piece formed on the new lower frame of the new frame to the mounting portion of the lower cover frame of the cover body that protrudes inward in the finding direction with a screw; with the second plate portion of the cover body extending in the finding direction on the outdoor side removed from the first plate portion of the cover body extending in the expected direction, Provided on the lower cover frame bringing the height adjusting mechanism into Adjust to the lower frame of the existing frame abutment, and attaching the second plate portion of the cover body to the first plate portion.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0008] FIG. 1 is a longitudinal sectional view of the modified sash 1 of the first embodiment. The modified sash 1 is used as part of a fitting. A housing 28 that forms an opening 4 in a wall portion 2 that partitions an indoor space and an outdoor space is provided, and a fitting including the modified sash 1 is provided on the housing 28. The housing 28 is a framework structure formed by assembling a plurality of framework members, and is formed of a material such as wood or resin material to which screws can be screwed, and supports a frame member 24 and the like. The indoor space and the outdoor space are located on both sides in the prospective direction of the new shoji 14 housed in the modified sash 1. Comprising The modified sash 1 includes a new frame 10, a new shoji 14, a cover body 16, a screen door 18, a decorative material 30, a partition material 32, an attachment 34, a spacer 36, and a connector 39.

[0009] The new frame 10 is newly attached for modification and functions as a frame body that supports the new shoji 14. The new frame 10 is formed by extrusion molding or the like using a metal material or a 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 in a rectangular shape by connecting the new upper frame 20a, the new lower frame 20b, and the pair of new vertical frames 20c.

[0010]

[0011] ​The newly installed shoji 14 is provided on the inner peripheral side of the newly installed frame 10 and is slidably attached to the newly installed frame 10. In the example of FIG. 1, the newly installed shoji 14 is shown in two sheets, but it is not limited to two sheets and may be one sheet or three or more sheets. In the following description, the thickness direction of the newly installed shoji 14 is referred to as the prospective direction, and the direction orthogonal to the prospective direction is referred to as the finding direction.

[0012] The existing frame 12 is a rectangular frame body and has been attached to the building body 28 since 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 using a metal material. The frame member 24 is formed into a rectangle by a plate material.

[0013] The decorative material 30, the partition material 32, and the attachment 34 are provided on the indoor side and cover the space between the newly installed 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 finding direction. The partition 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 newly installed frame 10. The attachment 34 is fixed to the newly installed frame 10 to limit the movement of the newly installed frame 10 in the prospective direction.

[0014] The connector 39 connects the newly installed upper frame 20a of the newly installed frame 10 to the building body 28 and can directly transmit the load of the newly installed upper frame 20a to the building body 28. "Directly" means that the load of the newly installed upper frame 20a can be directly transmitted to the building body 28 without passing through the existing frame 12.

[0015] Note that the decorative material 30, the partition material 32, and the attachment 34 are not limited to the mode composed of three members and may be composed of one member or two members. The decorative material 30, the partition material 32, and the attachment 34 together are referred to as a decorative member, which constitutes the design surface on the indoor side of the renovated sash 1.

[0016] The cover body 16 is formed in a rectangular shape and covers the inner peripheral side and the outdoor side of the four sides of the existing frame 12. Further, the cover body 16 is connected to the new frame 10 and the existing frame 12 and functions to attach the new frame 10 to the existing frame 12. In this way, since 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, without preparing a new frame dedicated to the retrofit sash, the sash used at the time of new construction can be used as the new frame 10 of the retrofit sash 1, and the options for the new frame 10 can be increased during the retrofit. Further, the number of parts of the retrofit sash 1 can be suppressed, and the attachment process of the retrofit sash 1 can be facilitated.

[0017] FIG. 2 is an enlarged cross-sectional view of the upper side of the retrofit sash 1. The existing upper frame 22a of the existing frame 12 has a base plate portion 50, a ridge portion 52, an outer wall portion 54, and a seating portion 55. The base plate portion 50 extends along the upper side of the opening 4 and extends in a prospective direction from the outdoor side toward the frame member 24 in the vertical cross-section. A pair of ridge portions 52 are formed so as to protrude downward from the base plate portion 50. The ridge portion 52 functioned as a rail for guiding the slide of an existing shoji (not shown).

[0018] The outer wall portion 54 is formed so as to hang down from the outdoor-side end of the base plate portion 50. The seating portion 55 is formed at the indoor-side end of the base plate portion 50 and seats so as to catch on the surface of the frame member 24. The seating portion 55 is screwed to the building body 28.

[0019] The new upper frame 20a of the new frame 10 has a base plate portion 56, a ridge portion 58, a protruding piece 60, an outer wall portion 62, and a coupling portion 64. The base plate portion 56 extends along the upper side of the opening 4 and extends in a prospective direction in the vertical cross-section. The base plate portion 56 is formed of two members and is clamped by the coupling portion 64 to be integrated. A pair of ridge portions 58 are formed so as to protrude downward from the base plate portion 56. The ridge portion 58 functions as a rail for guiding the slide of the new shoji 14.

[0020] The protruding piece 60 protrudes upward from a position midway on the base plate portion 56, that is, outward in the finding direction circumference. The protruding piece 60 may be continuously formed in a direction orthogonal to the prospective direction and the vertical direction, and may be formed with a plurality of partial protrusions. The protruding piece 60 is located between a pair of ridge portions 58 in the prospective direction. The protruding piece 60 has a contact surface that contacts the cover body 16. The outer wall portion 62 is formed so as to hang down from the outdoor-side end of the base plate portion 56. The protruding piece 60 enables easy screwing to the cover body 16.

[0021] 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 a mounting portion 78. The hollow portion 74 is also referred to as a hollow part, and the same applies to other hollow portions described later.

[0022] The first plate portion 70 of the upper cover frame 26a extends along the upper side of the opening 4 and extends in the prospective direction in the longitudinal cross-section. The first plate portion 70 has a step 70a at the position of the intermediate mounting portion 78, and due to the step 70a, the indoor side is shifted upward and approaches the frame member 24. The first plate portion 70 is disposed on the inner peripheral side of the existing frame 12 and covers the ridge portion 52 of the existing frame 12.

[0023] The second plate portion 72 is continuous with the outdoor-side end of the first plate portion 70 and extends in the finding direction. The second plate portion 72 extends from the outdoor-side end of the first plate portion 70 to the outer peripheral side, covers the outer wall portion 54 of the existing frame 12, and forms a design surface.

[0024] 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. The hollow portion 74 is a hollow part that forms a cavity. The first tapping hole 76a and the second tapping hole 76b are formed in the hollow portion 74.

[0025] The hollow portion 74 is provided at a position overlapping the outer peripheral side in the finding direction of the new frame 10. By forming the hollow portion 74 in the upper cover frame 26a, the load-bearing capacity of the retrofit window 1 can be improved, and even if the new shutter 14 receives strong wind and applies an impact or load upward to the new upper frame 20a, the hollow portion 74 can absorb it.

[0026] The attachment portion 78 is located on the indoor side surface of the hollow portion 74 and has an attachment surface 78a with the new upper frame 20a. The attachment portion 78 protrudes inward in the finding direction from the first plate portion 70. By facing the attachment surface 78a toward the indoor side, it becomes possible to attach the new frame 10 from the indoor side. The attachment surface 78a can be widely formed upward by the step 70a, and a surface matching the protruding piece 60 of the new upper frame 20a can be widened. By providing the attachment portion 78 on the side surface 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 peripheral side of the new frame 10.

[0027] With the end portion on the indoor side of the first plate portion 70 and the seating portion 55 of the existing upper frame 22a facing each other, they are connected by the second screw 42 from below and directly fixed to the building body 28. As a result, the load of the first plate portion 70 is transmitted to the building body 28 without passing through the existing frame 12. The end portion on the indoor side of the first plate portion 70 functions as a fixing portion 70b fixed to the building body 28. The second screw 42 is screwed along the upward direction in the finding direction, passes through the upper cover frame 26a, the suspension member 38, the existing upper frame 22a, and the frame member 24 in this order, and is locked to the building body 28 located on the outer peripheral side.

[0028] With the attachment surface 78a and the protruding piece 60 of the new upper frame 20a in surface contact, they are connected by the first screw 40 from the indoor side. The first screw 40 is screwed along the prospective direction. As a result, the new frame 10 can be attached from the indoor side.

[0029] The connector 39 fixes the base plate portion 56 on the indoor side of the new upper frame 20a to the building body 28, suppressing deformation of the end portion on the indoor side of the new upper frame 20a. The connector 39 has a suspension member 38, an elastic body 41, a second screw 42, and a third screw 44.

[0030] Figure 3 is a perspective view of the suspension member 38. The suspension 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.

[0031] The first plate portion 38a and the second plate portion 38b form parallel plate surfaces facing each other. 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 fixing portion 70b of the cover body 16. The second plate portion 38b is provided below the first plate portion 38a, and the newly installed upper frame 20a is connected thereto. Thereby, the newly installed frame 10 can be supported in a suspended state. The fixing portion 70b of the upper cover frame 26a functions as a receiving portion for receiving the first plate portion 38a of the suspension member 38.

[0032] The notch portion 38d is formed so as to recess the edge of the first plate portion 38a toward the connecting plate portion 38c. The notch portion 38d is open in a direction away from the connecting plate portion 38c, facilitating the insertion of the second screw 42. The screw hole portion 38e is formed to penetrate the second plate portion 38b.

[0033] The elastic body 41 is provided at the lower part of the first plate portion 38a, and is a distance adjusting member 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 member. 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. Although the elastic body 41 is provided at the lower part of the first plate portion 38a, it may be provided at the upper part of the first plate portion 38a, or may be provided at both the upper and lower parts of the first plate portion 38a.

[0034] Since the notch portion 38d is open, the first plate portion 38a can be inserted from the indoor side into the gap formed between the existing frame 12 into which the second screw 42 is inserted and the cover body 16, that is, the gap between the fixing portion 70b and the housing 28. Thereby, the suspension member 38 can be arranged in a state where the fixing portion 70b of the cover body 16 is fixed with the second screw 42.

[0035] As shown in Fig. 2, the suspension member 38 is arranged on the outer peripheral side of the new frame 10, on the indoor side of the first screw 40. Thereby, after attaching to the inner peripheral side of the cover body 16 of the new frame 10, the suspension member 38 can be attached. The second plate portion 38b is connected to the new upper frame 20a by the third screw 44.

[0036] The elastic body 41 is held in an elastically deformed state by tightening the third screw 44. That is, when the new upper frame 20a is lifted upward by tightening the third screw 44, a downward load is applied to the first plate portion 38a, and the elastic body 41 is elastically deformed by that load. Thereby, the gap between the upper cover frame 26a and the suspension member 38 can be adjusted.

[0037] The third screw 44 is arranged at a position overlapping the second screw 42 in the vertical direction. Thereby, Since the two screws do not shift in the depth direction (the longitudinal direction of the new upper frame 20a), the load can be transmitted firmly.

[0038] Note that the connecting plate portion 38c may connect the indoor-side end of the first plate portion 38a and the outdoor-side end of the second plate portion 38b. That is, the suspension member 38 may be formed in a substantially S shape in side view.

[0039] Fig. 4 is an enlarged cross-sectional view of the lower side of the retrofit sash 1. The existing lower frame 22b has a first ridge portion 52a, a second ridge portion 52b, an outer wall portion 54, and a seating portion 55. The first ridge portion 52a is located on the outdoor side of the second ridge portion 52b and is lower than the second ridge portion 52b.

[0040] The new lower frame 20b has a base plate portion 56, a ridge portion 58, a protruding piece 60, a connecting portion 64, a first hollow portion 67, a second hollow portion 68, a leg portion 69a, and a protruding portion 69b. The first hollow portion 67 and the second hollow portion 68 are formed in the lower part of the base plate portion 56. The load-bearing capacity of the new lower frame 20b can be improved by the first hollow portion 67 and the second hollow portion 68.

[0041] 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 lower part of the base plate portion 56 and is located between the pair of ridge portions 58 in the prospective direction. The protruding piece 60 protrudes outward in the circumferential direction along the finding direction.

[0042] The leg portion 69a protrudes downward from the second hollow portion 68. The leg portion 69a is located on the indoor side of the indoor-side ridge portion 58 and on the indoor side of the newly installed lower frame 20b. The leg portion 69a abuts against the spacer 36 to support the indoor side of the newly installed lower frame 20b. The protruding portion 69b protrudes downward at a position outside the outdoor side of the leg portion 69a and abuts against the spacer 36.

[0043] 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 a mounting portion 78.

[0044] The first plate portion 70 of the lower cover frame 26b extends along the lower side of the opening 4 and extends in the prospective direction in the longitudinal cross-section. The first plate portion 70 is disposed on the inner peripheral side of the existing frame 12 and covers the ridge portion 52 of the existing frame 12.

[0045] The second plate portion 72 is continuous with the outdoor-side end portion of the first plate portion 70 and extends in the finding direction. The second plate portion 72 extends from the outdoor-side end portion of the first plate portion 70 to the outer peripheral side, covers the outer wall portion 54 of the existing frame 12, and forms a design surface.

[0046] 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. The hollow portion 74 is provided at the upper part of the first plate portion 70. The first tapping hole 77a and the second tapping hole 77b are formed in the hollow portion 74. By forming a hollow in the lower cover frame 26b, impact can be absorbed and the load-bearing capacity can be improved. Also, the gap with the newly installed lower frame 20b can be reduced, making it easier to place the newly installed lower frame 20b on the lower cover frame 26b.

[0047] The attachment part 78 is located on the indoor side surface of the hollow part 74 and has an attachment surface 78a with the newly installed lower frame 20b. The attachment part 78 protrudes inward in the circumferential direction along the finding direction when viewed from the first plate part 70. By facing the attachment surface 78a toward the indoor side, it becomes possible to attach the newly installed frame 10 from the indoor side. By providing the attachment part 78 on the side surface of the hollow part 74, the tip of the first screw 46 can be accommodated inside the hollow.

[0048] The indoor side end of the first plate part 70 and the seating part 55 of the existing lower frame 22b face each other and are connected by the second screw 42 from below and fixed to the housing 28. The second screw 42 is screwed in along the downward direction of the finding direction and is screwed into the housing 28 located on the outer peripheral side.

[0049] The attachment surface 78a and the protruding piece 60 of the newly installed lower frame 20b are in surface contact and are connected by the first screw 46 from the indoor side. The first screw 46 is screwed in along the prospective direction. Thereby, the newly installed frame 10 can be attached from the indoor side.

[0050] The height adjustment mechanism 80 is provided on the lower cover frame 26b, intervenes between the lower cover frame 26b and the existing lower frame 22b, and abuts the lower cover frame 26b against the first ridge part 52a of the existing lower frame 22b. Thereby, the newly installed lower frame 20b can be placed on the existing lower frame 22b via the lower cover frame 26b, and the load of the newly installed shoji 14 can be received by the existing lower frame 22b. The height adjustment mechanism 80 is located below the newly installed shoji 14 on the outdoor side and can suppress the deformation of the outdoor side part of the newly installed lower frame 20b.

[0051] The height adjustment mechanism 80 has a nut 80a fixed to the lower cover frame 26b and a screw 80b screwed into the nut 80a. By rotating the screw 80b, the screw 80b is displaced in the vertical direction.

[0052] The spacer 36 is located below the lower part of the newly installed lower frame 20b on the indoor side and supports the newly installed lower frame 20b from below. The spacer 36 abuts against the leg part 69a and receives the load of the newly installed lower frame 20b. The spacer 36 is located below the protruding strip part 58 on the indoor side and receives the load of the newly installed shoji 14 supported by the protruding strip part 58. Thereby, even if the newly installed lower frame 20b is arranged on the inner peripheral side, being greatly separated from the frame member 24 and the housing 28, the deformation of the newly installed lower frame 20b on the indoor side can be suppressed.

[0053] FIG. 5 is a perspective 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 indoor side of the hollow part 74 of the lower cover frame 26b and is placed on the first plate part 70.

[0054] The spacer 36 has a screw insertion hole 84 on the side surface facing the mounting surface 78a. The first screw 46 is inserted into the screw insertion hole 84. The spacer 36 is fixed to the mounting part 78 together with the protruding piece 60 of the newly installed lower frame 20b by the first screw 46. The protruding piece 60 is sandwiched between the mounting part 78 and the spacer 36.

[0055] The spacer 36 has a recess 82, a first receiving part 83a, a second receiving part 83b, a first abutting rib 85a, and a second abutting rib 85b. The recess 82 is formed in a semi-circular cross-section on the upper surface and is used to allow the spacer 36 to sink into the leg part 69a of the newly installed lower frame 20b.

[0056] The first receiving part 83a is formed on the upper surface of the spacer 36 and receives the leg part 69a of the newly installed lower frame 20b. The first receiving part 83a is located on the indoor side of the recess 82, and the second receiving part 83b is located on the outdoor side of the recess 82 and receives the protruding part 69b of the newly installed lower frame 20b. By supporting at two locations, the newly installed lower frame 20b can be stably supported.

[0057] The first abutment rib 85a and the second abutment rib 85b are formed on the lower surface 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.

[0058] 6 is a diagram for explaining a 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. An accommodation 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 larger 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.

[0059] The spacer 36 is moved from the indoor side to below the newly installed sill 20b, and the recess 82 is brought into contact with the tip of the foot 69a. The spacer 36 is then rotated around the tip of the foot 69a as a rotation fulcrum, slipping under the foot 69a and being pushed toward the mounting portion 78. As a result, the spacer 36 is in a state of supporting the foot 69a and the protrusion 69b, and is fixed to the mounting portion 78 together with the protruding piece 60 by the first screw 46.

[0060] The spacer 36 has a portion on the exterior side of the recess 82 that has a height dimension H2 that is greater 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 with the height dimension H2 can be easily positioned at the rear of the storage chamber A by inserting the spacer 36 into the recess 82 while rotating it.

[0061] Fig. 7 is a horizontal cross-sectional view of the remodeled sash 1 of the first embodiment. Since the horizontal cross-section of the remodeled sash 1 has a symmetrical shape, Fig. 7 shows only the left cross-section.

[0062] The existing vertical frame 22c has a base plate portion 50, a rib portion 52, an outer wall portion 54, and a seating portion 55. The newly installed lower frame 20b has a base plate portion 56 and a protruding piece 60. The protruding piece 60 protrudes in the outer peripheral direction of the finding direction when viewed from the base plate portion 56.

[0063] The vertical cover frame 26c has a first plate portion 70, a second plate portion 72, a hollow portion 74, and a mounting portion 78. The first plate portion 70 extends along the vertical side of the opening 4 and extends in the prospective direction in the lateral cross-section. The first plate portion 70 is disposed on the inner peripheral side of the existing frame 12 and covers the rib portion 52 of the existing frame 12.

[0064] The second plate portion 72 is continuous with the outdoor-side end portion of the first plate portion 70 and extends in the finding direction. The second plate portion 72 extends from the outdoor-side end portion of the first plate portion 70 to the outer peripheral side, covers the outer wall portion 54 of the existing frame 12, and forms a design surface. Also, the second plate portion 72 extends from the outdoor-side end portion of the first plate portion 70 to the inner peripheral side as well.

[0065] 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. The hollow portion 74 is provided on the outer peripheral side 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 14 hits during the opening and closing of the newly installed shoji 14.

[0066] The mounting portion 78 protrudes from the first plate portion 70 and has a mounting surface 78a with the newly installed vertical frame 20c. The mounting portion 78 protrudes in the inner peripheral direction of the finding direction from the first plate portion 70. By facing the mounting surface 78a to the indoor side, it becomes possible to mount the newly installed frame 10 from the indoor side.

[0067] In a state where the indoor-side end portion of the first plate portion 70 and the seating portion 55 of the existing upper frame 22a face each other, they are connected by a second screw 42 from below and fixed to the housing 28. The second screw 42 is screwed along the upward direction of the finding direction and locks to the housing 28 located on the outer peripheral side.

[0068] The mounting surface 78a and the protruding piece 60 of the newly installed vertical frame 20c are in surface contact and are connected by the first screw 48 from the indoor side. The first screw 48 is screwed along the prospective direction. Thereby, the newly installed frame 10 can be attached from the indoor side.

[0069] The hanging member 38 functions as a reinforcing member that fixes the base plate portion 56 on the indoor side of the newly installed vertical frame 20c to the housing 28 and suppresses deformation of the portion on the indoor side of the newly installed vertical frame 20c. Further, the hanging member 38 can limit the movement of the protruding piece 60 and the mounting portion 78 in the finding direction and suppress loosening of the screwing of the protruding piece 60 and the mounting portion 78.

[0070] FIG. 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 on the four sides constituting the cover body 16 is assembled in a rectangular shape in advance and attached to the existing frame 12 and the housing 28.

[0071] 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. FIG. 2 shows a state in which the upper cover frame 26a and one of the vertical cover frames 26c are connected. The upper cover frame 26a and one of the vertical cover frames 26c are connected by the fixing screw 27.

[0072] The first tapping hole 76a and the second tapping hole 76b formed in the upper cover frame 26a are formed, and screw insertion holes are formed at the upper end portions of one of the vertical cover frames 26c. The pair of fixing screws 27 are inserted into the screw insertion holes of one of the vertical cover frames 26c and are screwed into the first tapping hole 76a and the second tapping hole 76b, respectively. The opposite end portion of the upper cover frame 26a is also connected to the other vertical cover frame 26c by the fixing screw 27.

[0073] In addition, a first tapping hole 77a and a second tapping hole 77b are also formed in the lower cover frame 26b, and screw insertion holes are formed at the lower ends of the pair of vertical cover frames 26c. 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. That is, the pair of vertical cover frames 26c are respectively connected to both ends of the upper cover frame 26a and both ends of the lower cover frame 26b. Thereby, the cover body 16 is assembled into a rectangular shape.

[0074] In a state where the cover body 16 is assembled into a rectangle, it covers the inner peripheral side of each frame constituting the four sides of the existing frame 12 and is fixed to the housing 28, and is also connected to each frame constituting the four sides of the new frame 10. Note that the assembly of the cover body 16 is not limited to screwing using tapping holes, and for example, it may be connected using an L-shaped attachment.

[0075] FIG. 9 is a schematic diagram for explaining the attachment method of the new shoji 14. Each frame constituting the four sides of the cover body 16 is connected, and the cover body 16 is assembled into a rectangle. Also, the new frame 10 is assembled into a rectangle. The assembly work of the new frame 10 and the cover body 16 may be carried out at the factory or at the attachment site.

[0076] In a state where the cover body 16 is assembled, it is moved to the inner peripheral side of the existing frame 12 and screwed to the housing 28 together with the seating portion 55 of the existing frame 12. A first sealing 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.

[0077] The first sealing material 86 is, for example, a waterproof tape, which is attached to the seating portion 55 or the first plate portion 70 over the entire circumference and is sandwiched between the seating portion 55 and the first plate portion 70. Since the first sealing material 86 is brought into close contact with the existing frame 12 and the cover body 16 by the axial force of the second screw 42, the sealing performance can be improved. The first sealing material 86 may be attached so as to block the gap between the existing frame 12 and the cover body 16 from the indoor side.

[0078] Next, the new frame 10 is moved from the indoor side toward the inner peripheral side of the cover body 16 toward the outdoor side. The mounting surface 78a of the mounting portion 78 faces the indoor side, and the contact surface 60a of the protruding piece 60 faces the outdoor side. The contact surface 60a of the protruding piece 60 is in surface contact with the mounting surface 78a of the mounting portion 78 and is connected by the first screw 40. An operator can install the new frame 10 from the indoor side, and the work can be easily carried out even on the second floor or higher.

[0079] The second sealing material 88 is, for example, a waterproof tape, which is attached to 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. Since the second sealing material 88 is brought into close contact with the cover body 16 and the new frame 10 by the axial force of the first screw 40, the sealing performance can be improved. Note that the first sealing material 86 and the second sealing material 88 are not limited to waterproof tapes, and may be waterproof sheets, or may be a combination of a waterproof tape and a waterproof sheet.

[0080] FIG. 10 is a longitudinal sectional view of the modified sash 100 of the second embodiment and is a partially enlarged view of the lower frame side. The modified sash 100 of the second embodiment is different from the modified sash 1 of the first embodiment shown in FIG. 1 in that the lower cover frame 126b of the cover body 116 is composed of two members.

[0081] The lower cover frame 126b has a first plate portion 170, a second plate portion 172, a hole portion 173, an insertion hole 176, a mounting portion 178, a first hollow portion 174, and a second hollow portion 175. A U-shaped second hollow forming portion 175a forming the second hollow portion 175 extends in the longitudinal direction, and the second hollow forming portion 175a and a part of the second plate portion 172 are combined to form the second hollow portion 175 in a hollow shape with a rectangular cross section. The second hollow portion 175 has an engaging portion 177 and a locking portion 179 for connecting the first plate portion 170 and the second plate portion 172, and is formed by connecting the first plate portion 170 and the second plate portion 172.

[0082] The first plate portion 170 extends in the expected direction and covers the existing frame 12 from the inner peripheral side. The second plate portion 172 is continuous with the outdoor-side end portion of the first plate portion 170 and extends outward in the peripheral direction. Note that the second plate portion 172 may cover not only the existing lower frame 22b but also the outdoor side of the newly installed lower frame 20b.

[0083] The lower cover frame 126b is formed by joining two members, and the second plate portion 172 is detachably provided from the first plate portion 170. Each configuration of the lower cover frame 126b will be described with reference to new drawings.

[0084] FIG. 11 is a perspective cross-sectional view of the lower cover frame 126b and the height adjustment mechanism 180 of the second embodiment. A hole portion 173 is formed in the first plate portion 170, and the height adjustment mechanism 180 is fixed to the hole portion 173. That is, the height adjustment mechanism 180 is provided on the first plate portion 170 of the lower cover frame 126b. The height adjustment mechanism 180 is displaceable in the vertical direction and can abut against the first protrusion 52a of the existing lower frame 22b by the vertical displacement.

[0085] On the upper portion of the first plate portion 170, a first hollow portion 174 and a second hollow portion 175 are formed adjacent to each other. An insertion hole 176 and a mounting portion 178 are formed in the first hollow portion 174. The insertion hole 176 is coaxial with the hole portion 173 and is formed for applying a tool to the height adjustment mechanism 180. A protruding piece 60 of the newly installed lower frame 20b is screwed to the mounting portion 178.

[0086] The newly installed lower frame 20b is placed on the second hollow portion 175 located on the outdoor side. The second hollow portion 175 forms a smaller space than the first hollow portion 174 and has enhanced rigidity. An engaging portion 177 is formed on the outdoor side of the second hollow portion 175. The engaging portion 177 is a pair of protruding pieces spaced apart in the vertical direction and protruding so as to approach each other, forming a slit on the outdoor side of the second hollow portion 175.

[0087] On the indoor side surface of the second plate portion 172, a locking portion 179 is formed to protrude in the prospective direction. The locking portion 179 is a pair of flexible claw bodies and can be locked to the pair of engaging portions 177. The engaging portion 177 and the locking portion 179 constitute a so-called snap fit structure. When the locking portion 179 is pushed into the slit of the engaging portion 177, it is locked to the engaging portion 177, the second plate portion 172 and the first plate portion 170 are coupled, and the second hollow portion 175 is formed. Compared with the hollow portion 74 shown in FIG. 4, since the second hollow portion 175 is small, the locking of the engaging portion 177 and the locking portion 179 can be strengthened.

[0088] The height adjustment mechanism 180 includes a first nut 180a, a screw 180b, and a second nut 180c. The first nut 180a is fixed to the hole portion 173 and its rotation is restricted. The screw 180b is screwed into the first nut 180a and the second nut 180c. By rotating the screw 180b, it is displaced in the vertical direction with respect to the first nut 180a. The second nut 180c is provided so as to be rotatable with respect to the screw 180b or relatively rotatable with respect to the first nut 180a.

[0089] The second nut 180c is, for example, a hexagonal nut and can be rotated by engaging a tool such as a wrench with its outer peripheral surface. When the second nut 180c is rotated, it rotates relative to the first nut 180a or the screw 180b, and the lower end position of the second nut 180c is displaced in the vertical direction. Thus, the height adjustment mechanism 180 has input portions for height adjustment on the screw head of the screw 180b and the outer peripheral surface of the second nut 180c.

[0090] FIG. 12 is a diagram for explaining the adjustment method of the height adjustment mechanism 180. FIG. 12 shows a state in which the second plate portion 172 is removed from the first plate portion 170. The lower cover frame 126b of the cover body 116 is placed on the existing lower frame 22b and fixed to the housing 28 by the second screw 42 as shown in FIG. 10. Thereby, the cover body 116 is attached to the inner peripheral side of the existing frame 12 and covers the inner peripheral side of the existing frame 12. Note that the second plate portion 172 is It may be attached or removed. Further, the cover body 116 may be attached in a state assembled into a rectangle, or may be attached individually for each of the four sides.

[0091] At this time, the first plate portion 170 is placed on the second protrusion portion 52b and is separated from the first protrusion portion 52a. Therefore, the operator inserts a first tool 90 such as a driver into the insertion hole 176, rotates the screw 180b, adjusts the height of the lower end position of the height adjustment mechanism 180, and matches the height of the first protrusion portion 52a.

[0092] Next, the operator arranges the new frame 10 on the inner peripheral side of the cover body 116, and places the new lower frame 20b on the lower cover frame 126b. The operator provides the spacer 36 and screws the protruding piece 60 to the attachment portion 178. Further, the new shutter 14 is attached to the new frame 10. At this time, the load of the new shutter 14 is applied to the lower cover frame 126b. However, since the height of the height adjustment mechanism 180 has been adjusted in advance to match the second protrusion portion 52b, excessive deformation does not occur in the lower cover frame 126b.

[0093] Next, with the second plate portion 172 removed, the operator inserts a second tool 92 such as a wrench from the outdoor side into the gap between the lower cover frame 126b and the existing lower frame 22b, rotates the second nut 180c, and displaces the lower end position of the height adjustment mechanism 180 in the vertical direction to appropriately contact the first protrusion portion 52a. Thereby, the height of the height adjustment mechanism 180 can be adjusted in a state where the new frame 10 and the new shutter 14 are attached. In this way, since the height adjustment mechanism 180 can be adjusted from the outdoor side when the second plate portion 172 is removed, the final adjustment can be made in a state where the new frame 10 and the new shutter 14 are attached.

[0094] Next, the operator pushes the locking portion 179 of the second plate portion 172 into the engaging portion 177 of the first plate portion 170 to lock it, and attaches the second plate portion 172 to the first plate portion 170. In this way, the retrofit sash 100 is attached. By making the height adjustment mechanism 180 adjustable from two directions, it can be adjusted in the scene before attaching the new frame 10 and after attaching the new frame 10.

[0095] Since the second plate portion 172 is detachable from the first plate portion 170, if damage or the like occurs in the second plate portion 172 that constitutes the design surface, the second plate portion 172 can be easily replaced. Also, since the replacement of the second plate portion 172 is easy, it can be replaced at the work site with the second plate portions 172 having different lengths in the vertical direction. Thereby, it can be flexibly changed to the second plate portion 172 according to the shape of the existing frame 12. Further, by providing the lower cover frame 126b with the function of covering the existing lower frame 22b, the function of fixing the new lower frame 20b, and the function of receiving the load of the new lower frame 20b by the height adjustment mechanism 180, the number of parts can be reduced and the mountability can be improved.

[0096] FIG. 13 is a cross-sectional view in the lateral direction of the modified sash 100 of the second embodiment. The vertical cover frame 126c has a first plate portion 170, a second plate portion 172, a first hollow portion 174, and a second hollow portion 175. The second hollow portion 175 includes a part of the first plate portion 170 and the second plate portion 172, and the first plate portion 170 and the second plate portion 172 are joined by an engaging portion 193, a locking portion 194, and an overhanging piece 195 to form a hollow shape with a rectangular cross-section.

[0097] The vertical cover frame 126c is composed of two members, the first plate portion 170 and the second plate portion 172, and the second plate portion 172 is detachable from the first plate portion 170. It is located on the outdoor side of the first plate portion 170, and a flange-shaped engaging portion 193 is formed at the end of the second hollow portion 175. Also, an insertion hole 196 for the fourth screw 45 is formed in the first plate portion 170.

[0098] On the indoor side surface of the second plate portion 172, a hook-shaped locking portion 194 is formed. The locking portion 194 can be locked to the engaging portion 193. An overhanging piece 195 that protrudes in the viewing direction is formed from the indoor side surface of the second plate portion 172. The overhanging piece 195 is located on the inner peripheral side of the locking portion 194 and is screwed to the first plate portion 170 by the fourth screw 45 in a state of being in surface contact with the first plate portion 170. In this way, by detachably providing the second plate portion 172, the second plate portion 172 corresponding to the shape of the existing frame 12 can be selected. Further, the first plate portion 170 can be made common for parts, and the second plate portion 172 corresponding to the shape of the existing frame 12 can be attached.

[0099] It should be noted that the embodiments are merely illustrative, and various modifications are possible for the combination of each component. It is understood by those skilled in the art that such modifications are also within the scope of the present disclosure. Therefore, the descriptions and drawings in this specification should be treated as illustrative rather than restrictive.

[0100] For example, in the first embodiment, the cover body 16 is shown to be pre-assembled into a rectangle and arranged on the inner peripheral side of the existing frame 12. However, this is not the only way. Each frame of the cover body 16 may be individually arranged on the inner peripheral side of the existing frame 12, or the cover body 16 may be partially arranged without being connected. Further, although the cover body 16 is integrated with the portion covering the finding surface on the outdoor side of the existing frame 12 and the portion covering the viewing surface side of the existing frame 12, separate members may be connected and used.

[0101] Also, in the first embodiment, the retrofit sash 1 is shown to be used for a sliding window. However, this is not the only way. For example, the retrofit sash 1 can be used for a window with shutters, a window with a storm window, a vertical sliding window, a bathroom window, etc. Further, even if the first rib portion 52a is located on the outdoor side of the second rib portion 52b and the existing lower frame 22b is in the same or higher state than the second rib portion 52b, it is possible to attach the new frame 10 using the cover body 16 of the embodiment.

[0102] Also, in the first embodiment, the lower cover frame 26b is shown as a single member, but the present invention is not limited to this embodiment. 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.

Description of Reference Numerals

[0103] 1 Refitted sash, 4 Opening, 10 Newly installed frame, 12 Existing frame, 14 Newly installed shoji, 16 Cover body, 20a Newly installed upper frame, 20c Newly installed vertical frame, 20b Newly installed lower frame, 22a Existing upper frame, 22b Existing lower frame, 22c Existing vertical frame, 24 Frame member, 28 Body, 36 Spacer, 38 Hanging member, 40 First screw, 41 Elastic body, 42 Second screw, 44 Third screw, 45 Fourth screw, 46 First screw, 50 Base plate portion, 52 Ridge portion, 52a First ridge portion, 52b Second ridge portion, 54 Outer wall portion, 55 Seating portion, 56 Base plate portion, 58 Ridge portion, 60 Protruding piece, 100 Refitted sash, 116 Cover body, 126b Lower cover frame, 126c Vertical cover frame, 170 First plate portion, 172 Second plate portion, 173 Hole portion, 174 First hollow portion, 175 Second hollow portion, 176 Insertion hole, 177 Engaging portion, 178 Mounting portion, 179 Locking portion, 180 Height adjustment mechanism, 180a First nut, 180b Screw, 180c Second nut, 193 Engaging portion, 194 Locking portion, 195 Overhanging piece.

Claims

1. A retrofit sash installed at an opening in a building, A cover body attached to an inner periphery side of an existing frame provided in the opening; A new frame disposed on the inner circumferential side of the cover body; a height adjustment mechanism provided on a lower cover frame of the cover body, The height adjustment mechanism can abut against a lower frame of the existing frame by adjusting the height, The cover body is formed in a rectangular shape, The lower cover frame has an attachment portion that protrudes inward in the viewing direction, The new lower frame of the new frame is a renovated sash having a protruding piece that faces the mounting portion and is connected from inside the room by screws.

2. The lower cover frame is A first plate portion extending in a prospective direction and covering the existing frame from an inner periphery side; A second plate portion connected to an outside end of the first plate portion and extending toward the outer periphery, The retrofit sash according to claim 1 , wherein the height adjustment mechanism is provided on the first plate portion.

3. The remodeled sash according to claim 2 , wherein the second plate portion is detachably attached to the first plate portion.

4. The remodeled sash according to claim 3, wherein the height adjustment mechanism is capable of adjusting the height in the vertical direction from the outside of the room when the second plate portion is detached from the first plate portion.

5. A method for installing a remodeled sash installed in an opening of a building, comprising the steps of: A step of attaching a rectangular cover body to an inner periphery of an existing frame provided in the opening; a step of connecting the protruding piece formed on the new lower frame of the new frame with a screw from inside the room while facing the mounting portion of the lower cover frame of the cover body that protrudes toward the inner circumference in the viewing direction; A step of adjusting a height adjustment mechanism provided on the lower cover frame to abut against a lower frame of the existing frame in a state where a second plate portion of the cover body extending in a forward direction on the outdoor side is removed from a first plate portion of the cover body extending in a forward direction; and a step of attaching the second plate portion of the cover body to the first plate portion.

Images