Waterproof door frame and construction method of waterproof door frame

Abstract

To provide a waterproof door frame using an existing frame.SOLUTION: The waterproof door frame is constituted of a base frame A which is a three-way frame including an upper frame 2 and right and left vertical frames 3, 4, and a waterproof frame B including an upper frame 5, right and left vertical frames 6, 7, and a lower frame 8. The base frame A is attached to an opening, the three-way frame part including the upper frame 5 and the right and left vertical frames 6, 7 of the waterproof frame B is fixed to the inside of the base frame A, and the lower frame 8 of the waterproof frame B is placed on a floor surface FL.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a waterproof door frame and a construction method thereof.

Background Art

[0002] In general steel doors, a new door frame and door device are formed by performing a covering method on an existing frame (Patent Document 1).

[0003] However, a waterproof door frame has not been configured using an existing frame. Since a waterproof door frame is required to have waterproof performance and strength to withstand the assumed water pressure, it is difficult to obtain a waterproof door frame by directly applying the existing covering method.

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a waterproof door frame using an existing frame.

Means for Solving the Problems

[0005] The technical means adopted by the present invention is a door frame formed of a base frame and a waterproof frame provided with a watertight member, wherein the base frame is attached to an opening, the waterproof frame is positioned adjacent to the inside of the base frame and fixed to the base frame, and a watertight means is provided in a gap formed between the waterproof frame and the base frame, which is a waterproof door frame. In one aspect, the outdoor-facing surface of the base frame and the outdoor-facing surface of the waterproof frame are substantially flush. In one aspect, the expected dimensions of the base frame and the expected dimensions of the waterproof frame are substantially the same. The indoor-facing surface of the base frame and the indoor-facing surface of the waterproof frame are substantially flush.

[0006] In one aspect, the base frame is a three-sided frame composed of an upper frame and left and right vertical frames. The waterproof frame is a four-sided frame composed of an upper frame, left and right vertical frames, and a lower frame. The three-sided frame portion composed of the upper frame and the left and right vertical frames of the waterproof frame is positioned adjacent to the inside of the base frame and is fixed to the base frame. The lower frame of the waterproof frame is installed on the floor surface. Watertight means is provided in the gap formed between the three-sided frame portion of the waterproof frame and the base frame. In one aspect, the lower frame of the waterproof frame is anchor-fixed to the structure within the floor surface. In one aspect, the waterproof frame is formed by joining an upper frame, left and right vertical frames, and a lower frame. At least, the joints of the left and right vertical frames and the lower frame are waterproof-treated.

[0007] In one aspect, the base frame includes a projecting portion. The three-sided frame portion includes a projecting portion facing the opening and a back portion located on the opposite side of the projecting portion. The back portion of the three-sided frame portion and the projecting portion of the base frame are connected by connecting means. Watertight means is provided in the gap formed between the back portion and the projecting portion. In one aspect, the projecting portion of the base frame includes a first projecting surface on the outdoor side and a second projecting surface on the indoor side. The connecting means includes an outdoor-side connecting member fixed to the first projecting surface and an indoor-side connecting member fixed to the second projecting surface. The outdoor-side connecting member and the indoor-side connecting member are connected to the back portion of the three-sided frame portion.

[0008] In one aspect, the projecting portion of the base frame is located on the indoor side of the first projecting surface and includes an outdoor-side abutting portion. The outdoor-side connecting member includes a projecting piece and a locating piece. The projecting piece abuts against the first projecting surface, and the base end side of the locating piece abuts against or is close to the outdoor-side abutting portion and is fixed to the first projecting surface. The tip end side of the locating piece of the outdoor-side connecting member is connected to the back surface portion of the triple-frame portion. In one aspect, the outdoor-side abutting portion is an outdoor-side locating portion. In one aspect, the outdoor-side abutting portion is the tip of the outdoor-side projecting piece of the second projecting surface (indoor-side projecting surface).

[0009] In one aspect, the projecting portion of the base frame is located on the outdoor side of the second projecting surface and includes an indoor-side abutting portion. The indoor-side connecting member includes a projecting piece and a locating piece. The projecting piece abuts against the second projecting surface, and the base end side of the locating piece abuts against or is close to the indoor-side abutting portion and is fixed to the second projecting surface. The tip end side of the locating piece of the indoor-side connecting member is connected to the back surface portion of the triple-frame portion. In one aspect, the indoor-side abutting portion is an indoor-side locating portion.

[0010] In one aspect, an outdoor-side gap exists between the first projecting surface of the base frame and the outdoor-side portion of the back surface portion of the triple-frame portion, and the projecting piece and the base end side of the locating piece of the outdoor-side connecting member are located in the outdoor-side gap. On the outdoor side of the outdoor-side gap, outdoor-side watertight means is provided on the outdoor side of the projecting piece of the outdoor-side connecting member. An indoor-side gap exists between the second projecting surface of the base frame and the indoor-side portion of the back surface portion of the triple-frame portion, and the projecting piece and the base end side of the locating piece of the indoor-side connecting member are located in the indoor-side gap. On the indoor side of the indoor-side gap, indoor-side watertight means is provided on the indoor side of the projecting piece of the indoor-side connecting member.

[0011] The construction method of the waterproof door frame adopted by the present invention is as follows. In an existing door device, a step of removing the door body from the opening frame of the door device to obtain a base frame. A step of fixing a waterproof frame by positioning it adjacent to the inside of the base frame on the base frame; A step of providing a watertight means in a gap formed between the waterproof frame and the base frame; It consists of.

[0012] In one aspect, the step of obtaining the base frame is a step of removing a door body and a threshold from an existing door device and obtaining a base frame which is a three-sided frame composed of an upper frame and left and right vertical frames. A step of positioning a three-sided frame portion composed of the upper frame and the left and right vertical frames of a four-sided frame composed of an upper frame, left and right vertical frames, and a lower frame adjacent to the inside of the base frame and fixing it to the base frame; A step of installing the lower frame of the four-sided frame on the floor surface; A step of providing the watertight means in a gap formed between the three-sided frame portion of the four-sided frame and the base frame; It consists of. In one aspect, the step of installing the lower frame of the waterproof frame on the floor surface includes anchor-fixing the lower frame to a structure within the floor surface.

[0013] In one aspect, the base frame includes a projected portion. The three-sided frame portion includes a projected portion facing an opening and a back portion located on the opposite side of the projected portion. The step of fixing the three-sided frame portion to the base frame includes connecting the back portion of the three-sided frame portion and the projected portion of the base frame using a connecting member.

[0014] In one aspect, the projected portion of the base frame includes a first projected surface on the outdoor side and a second projected surface on the indoor side. Fix an outdoor side connecting member fixed to the first projected surface to an outdoor side portion of the back portion of the three-sided frame portion. Fix an indoor side connecting member fixed to the second projected surface to an indoor side portion of the back portion of the three-sided frame portion.

[0015] In one aspect, the projected portion of the base frame is located on the indoor side of the first projected surface and includes an outdoor side abutting portion. The outdoor side connecting member includes a projected piece and a locating piece. With the proximal end side of the locating piece abutted against or proximate to the outdoor side abutting portion, the projected piece is fixed to the first projected surface. The distal end side of the locating piece of the outdoor side connecting member is fixed to the outdoor side portion of the back surface portion of the three-sided frame portion. In one aspect, the projected portion of the base frame is located on the outdoor side of the second projected surface and includes an indoor side abutting portion. The indoor side connecting member includes a projected piece and a locating piece. With the proximal end side of the locating piece abutted against or proximate to the indoor side abutting portion, the projected piece is fixed to the second projected surface. The distal end side of the locating piece of the indoor side connecting member is fixed to the indoor side portion of the back surface portion of the three-sided frame portion.

[0016] In one aspect, the first projected surface of the base frame and the outdoor side portion of the back surface portion of the three-sided frame portion face each other with an outdoor side gap therebetween. The outdoor side connecting member is inserted through the outdoor side gap and fixed to the first projected surface and the outdoor side portion of the back surface portion of the three-sided frame portion. The second projected surface of the base frame and the indoor side portion of the back surface portion of the three-sided frame portion face each other with an indoor side gap therebetween. The indoor side connecting member is inserted through the indoor side gap and fixed to the second projected surface and the indoor side portion of the back surface portion of the three-sided frame portion. Outdoor side waterproof means is provided on the outdoor side of the outdoor side gap. Indoor side waterproof means is provided on the indoor side of the indoor side gap.

Advantages of the Invention

[0017] According to the present invention, it is possible to provide a waterproof door frame using an existing frame. By using an existing frame (by leaving the upper frame and vertical frames of the existing frame and only removing the sliding panel), the auxiliary work around the existing frame can be reduced, and the construction period can also be shortened.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0019] [A] Overall Configuration of the Waterproof Door Device FIG. 1 is a front view of the waterproof door according to the present embodiment as seen from the outdoor side, FIG. 2 is a longitudinal sectional view of the waterproof door device according to the present embodiment, and FIG. 3 is a cross-sectional view of the waterproof door device according to the present embodiment. It should be noted that in this specification, the terms "outdoor side" and "indoor side" are used not only when referring to the positions on the outdoor side and indoor side with the opening therebetween, but also when specifying the relative positions of parts of a member. Also, depending on the installation location of the opening where the waterproof door is installed, note that the terms "outdoor side" and "indoor side" are synonymous with "outdoor side" and "indoor side".

[0020] The waterproof door is composed of a four-sided waterproof door frame and a door body 1 that opens and closes the waterproof door frame. The waterproof door frame according to the present embodiment is a door frame formed by a base frame A and a waterproof frame B. The base frame A is attached to the opening, and the waterproof frame B is located inside the base frame A and fixed to the base frame A.

[0021] The base frame A is a steel three-sided frame composed of the upper frame 2 and the left and right vertical frames 3 and 4. In this embodiment, the hollow parts of the upper frame 2 and the left and right vertical frames 3 and 4 are filled with a filling material (such as mortar). The waterproof frame B is a steel four-sided frame composed of the upper frame 5, the left and right vertical frames 6 and 7, and the lower frame (threshold) 8. The hollow parts of the upper frame 5, the left and right vertical frames 6 and 7, and the lower frame 8 are filled with mortar M exemplified as a filling material. Note that if the desired strength is ensured, it is not necessarily required to fill the upper frame 5 and the left and right vertical frames 6 and 7 with a filling material (such as mortar). The three-sided frame part composed of the upper frame 5 and the left and right vertical frames 6 and 7 of the waterproof frame B is fixed inside the base frame A, and the lower frame 8 of the waterproof frame B is installed on the floor surface FL.

[0022] The door body 1 is a steel door having an outdoor-facing surface 10, an indoor-facing surface 11, an upper surface 12, a lower surface 13, a door-tip-side end surface 14, and a door-bottom-side end surface 15. The door body 1 is a hinged door in which the door-bottom-side part is rotatably attached to the door-bottom-side part of the waterproof door frame (the door-bottom-side vertical frame 7 of the waterproof frame) using a hinge H. A watertight member 9 is provided around the waterproof frame B of the waterproof door frame. When the door body 1 is in the closed position, the peripheral part (the four peripheral edges of the indoor-facing surface 11) or the corners of the indoor-side part of the door body 1 are pressed against the watertight member 9. The watertight member 9 is formed of an elastic member such as waterproof rubber or elastic resin. In the illustrated embodiment, a single-leaf door device is shown. This specification will be described based on the door frame of the single-leaf door device. However, the door frame according to the present invention is also applicable to the door frames of double-leaf or parent-child-opening door devices composed of two door bodies. In this case, it will be understood by those skilled in the art that one of the left and right vertical frames of the base frame A and one of the left and right vertical frames of the waterproof frame B is the door-bottom-side vertical frame of the first door body, and the other vertical frame is the door-bottom-side vertical frame of the second door body.

[0023] [B] Configuration of the base frame [B-1] Upper frame of the base frame While referring to Fig. 4, the configuration of the upper frame 2 of the base frame A will be described. The upper frame 2 of the base frame A is a long member located above the opening and extending in the opening width direction, and includes an outdoor side finding surface 20, an indoor side finding surface 21, and a projected portion (lower surface portion) extending in the indoor-outdoor direction across the lower ends between the outdoor side finding surface 20 and the indoor side finding surface 21. The projected portion consists of an outdoor side horizontal plane 22, an indoor side horizontal plane 23, and a downward convex portion between the outdoor side horizontal plane 22 and the indoor side horizontal plane 23. The downward convex portion consists of an outdoor side finding portion 24, an indoor side finding portion 25, and a central horizontal plane 26. An outdoor side horizontal side 27 extending horizontally inward is integrally formed at the upper end of the outdoor side finding surface 20, and an indoor side horizontal side 28 extending horizontally outward is integrally formed at the upper end of the indoor side finding surface 21.

[0024] [B―2] Vertical Frame at the Door Tip of the Base Frame While referring to Fig. 5, the configuration of the vertical frame 3 at the door tip of the base frame A will be described. The vertical frame 3 at the door tip of the base frame A is a long member located at the door tip side of the opening and extending in the height direction, and includes an outdoor side finding surface 30, an indoor side finding surface 31, and a projected portion extending in the indoor-outdoor direction across the inner ends in the opening width direction between the outdoor side finding surface 30 and the indoor side finding surface 31. The projected portion consists of an outdoor side projected surface 32, an indoor side projected surface 33, and a convex portion between the outdoor side projected surface 32 and the indoor side projected surface 33. The convex portion consists of an outdoor side finding portion 34, an indoor side finding portion 35, and a central projected surface 36. An outdoor side projected side 37 extending in the projected direction inward is integrally formed at the outer end of the outdoor side finding surface 30, and an indoor side projected side 38 extending in the projected direction outward is integrally formed at the outer end of the indoor side finding surface 31.

[0025] [B―3] Vertical Frame at the Door Bottom of the Base Frame While referring to Fig. 6, the structure of the door-end side vertical frame 4 of the base frame A will be described. The door-end side vertical frame 4 of the base frame A is a long member that is located on the door-end side of the opening and extends in the height direction, and includes an outdoor side finding surface 40, an indoor side finding surface 41, and a projecting portion that extends in the indoor-outdoor direction between the inner ends of the outdoor side finding surface 40 and the indoor side finding surface 41 in the opening width direction. The projecting portion consists of an outdoor side projecting surface 42, an indoor side projecting surface 43, and a convex portion between the outdoor side projecting surface 42 and the indoor side projecting surface 43. The convex portion consists of an outdoor side finding portion 44, an indoor side finding portion 45, and a central projecting surface 46. An outdoor side projecting edge 47 that extends in the projecting direction toward the indoor side is integrally formed at the outer end of the outdoor side finding surface 40, and an indoor side projecting edge 48 that extends in the projecting direction toward the outdoor side is integrally formed at the outer end of the indoor side finding surface 41.

[0026] [C] Mounting Structure of Base Frame As shown in Figs. 2 and 4, in the upper frame 2 of the base frame A, a plurality of connecting pieces 29 are fixed with a gap in the width direction between the outdoor side horizontal edge 27 and the indoor side horizontal edge 28, and the upper frame 2 is fixed to the building body C via the connecting pieces 29. The gap between the upper frame 2 and the building body C is filled with mortar M exemplified as a filling material, and a sealing material S' as a waterproof means is provided in the gap between the outdoor side horizontal edge 27 and the building body C located on the outdoor side of the filled mortar M, and a sealing material S' as a waterproof means is provided in the gap between the indoor side horizontal edge 28 and the building body C located on the indoor side of the filled mortar M. Note that the sealing material S' on the indoor side may not be provided.

[0027] As shown in FIGS. 3 and 5, in the door tip side vertical frame 3 of the base frame A, a plurality of connecting pieces 39 are fixed at intervals in the height direction between the outdoor side prospective side 37 and the indoor side prospective side 38, and the door tip side vertical frame 3 is fixed to the building body C via the connecting pieces 39. The gap between the door tip side vertical frame 3 and the building body C is filled with mortar M exemplified as a filling material, and a sealing material S' as a waterproof means is provided in the gap between the outdoor side prospective side 37 and the building body C located on the outdoor side of the filled mortar M, and a sealing material S' as a waterproof means is provided in the gap between the indoor side prospective side 38 and the building body C located on the indoor side of the filled mortar M. A further sealing material S'' is provided on the outdoor side of the outdoor side sealing material S'. Note that the indoor side sealing material S' may not be provided.

[0028] As shown in FIGS. 3 and 6, in the door butt side vertical frame 4 of the base frame A, a plurality of connecting pieces 49 are fixed at intervals in the height direction between the outdoor side prospective side 47 and the indoor side prospective side 48, and the door butt side vertical frame 4 is fixed to the building body C via the connecting pieces 49. The gap between the door butt side vertical frame 4 and the building body C is filled with mortar M exemplified as a filling material, and a sealing material S' as a waterproof means is provided in the gap between the outdoor side prospective side 47 and the building body C located on the outdoor side of the filled mortar M, and a sealing material S' as a waterproof means is provided in the gap between the indoor side prospective side 48 and the building body C located on the indoor side of the filled mortar M. A further sealing material S'' is provided on the outdoor side of the outdoor side sealing material S'. Note that the indoor side sealing material S' may not be provided.

[0029] In the present embodiment, the prospective dimensions of the upper frame 2, the door tip side vertical frame 3, and the door butt side vertical frame 4 of the base frame A are the same. In the state where the base frame A is attached to the opening, the outdoor side finding surfaces 20, 30, 40 are flush, and the indoor side finding surfaces 21, 31, 41 are flush. The base frame A according to the present embodiment is a three-sided frame and does not include a lower frame or a sliding sill connecting the lower end portions of the door tip side vertical frame 3 and the door butt side vertical frame 4.

[0030] [D] Structure of the waterproof frame [D-1] Upper frame of the waterproof frame While referring to Fig. 4, the structure of the upper frame 5 of the waterproof frame B will be described. The upper frame 5 of the waterproof frame B is a long member located above the opening and extending in the opening width direction. It includes an outdoor-facing surface 50, an indoor-facing surface 51 with a height dimension larger than that of the outdoor-facing surface 50 (not limited to this, for example, it may have the same height dimension), and a projecting portion (lower surface portion) extending in the indoor-outdoor direction across the lower ends between the outdoor-facing surface 50 and the indoor-facing surface 51. The projecting portion consists of an outdoor lower surface 52 extending horizontally inward from the lower end of the outdoor-facing surface 50, an indoor lower surface 53 located below the outdoor lower surface 52 and extending horizontally outward from the lower end of the indoor-facing surface 51, and a groove portion 54 formed at the step portion between the indoor end of the outdoor lower surface 52 and the outdoor end of the indoor lower surface 53 and opening outward.

[0031] An outdoor horizontal side 55 extending horizontally inward is integrally formed at the upper end of the outdoor-facing surface 50, and an indoor horizontal side 56 extending horizontally outward is integrally formed at the upper end of the indoor-facing surface 51. A plurality of connecting pieces 57 are fixed with a gap in the opening width direction between the outdoor horizontal side 55 and the indoor horizontal side 56.

[0032] [D―2] Vertical frame on the door tip side of the waterproof frame While referring to Fig. 5, the structure of the door tip side vertical frame 6 of the waterproof frame B will be described. The door tip side vertical frame 6 of the waterproof frame B is a long member located on the door tip side of the opening and extending in the opening height direction. It includes an outdoor-facing surface 60, an indoor-facing surface 61 with a dimension larger than that of the outdoor-facing surface 60 (not limited to this, for example, it may have the same dimension), and a projecting portion extending in the indoor-outdoor direction across the inner ends between the outdoor-facing surface 60 and the indoor-facing surface 61. The projecting portion consists of an outdoor projecting surface 62 extending in the projecting direction inward from the inner end of the outdoor-facing surface 60, an indoor projecting surface 63 located more inward than the outdoor projecting surface 62 and extending in the projecting direction outward from the inner end of the indoor-facing surface 61, and a groove portion 64 formed at the step portion between the indoor end of the outdoor projecting surface 62 and the outdoor end of the indoor projecting surface 63 and opening outward.

[0033] At the outer end of the outdoor-facing surface 60, an outdoor-facing projected edge 65 extending in the projected direction toward the indoor side is integrally formed. At the outer end of the indoor-facing surface 61, an indoor-facing projected edge 66 extending in the projected direction toward the outdoor side is integrally formed. Between the outdoor-facing projected edge 65 and the indoor-facing projected edge 66, a plurality of connecting pieces 67 are fixed with a gap in the opening height direction.

[0034] [D―3] Vertical frame on the door bottom side of the waterproof frame While referring to FIG. 6, the configuration of the vertical frame 7 on the door bottom side of the waterproof frame B will be described. The vertical frame 7 on the door bottom side of the waterproof frame B is a long member located on the door bottom side of the opening and extending in the opening height direction. It includes an outdoor-facing surface 70, an indoor-facing surface 71 with a larger finding dimension (not limited to this, for example, it may be the same finding dimension) than the outdoor-facing surface 70, and a projected portion extending in the indoor-outdoor direction across the inner ends of the outdoor-facing surface 70 and the indoor-facing surface 71. The projected portion consists of an outdoor-facing projected surface 72 extending in the projected direction from the inner end of the outdoor-facing surface 70 toward the indoor side, an indoor-facing projected surface 73 located inward of the outdoor-facing projected surface 72 and extending in the projected direction from the inner end of the indoor-facing surface 71 toward the outdoor side, and a groove portion 74 formed at the step portion between the indoor-side end of the outdoor-facing projected surface 72 and the outdoor-side end of the indoor-facing projected surface 73 and opening toward the outdoor side.

[0035] At the outer end of the outdoor-facing surface 70, an outdoor-facing projected edge 75 extending in the projected direction toward the indoor side is integrally formed. At the outer end of the indoor-facing surface 71, an indoor-facing projected edge 76 extending in the projected direction toward the outdoor side is integrally formed. Between the outdoor-facing projected edge 75 and the indoor-facing projected edge 76, a plurality of connecting pieces 77 are fixed with a gap in the opening height direction.

[0036] [D―4] Bottom frame of the waterproof frame While referring to FIG. 2, the configuration of the lower frame 8 of the waterproof frame B will be described. The lower frame 8 of the waterproof frame B is a long member located below the opening and extending in the opening width direction, and includes an outdoor side finding surface 80, an indoor side finding surface 81, and a prospective portion (upper surface portion) extending in the indoor-outdoor direction across the upper ends of the outdoor side finding surface 80 and the indoor side finding surface 81. The prospective portion is formed at a step portion between an outdoor side upper surface 82, an indoor side upper surface 83, an indoor side end of the outdoor side upper surface 82, and an outdoor side end of the indoor side upper surface 83, and includes a groove portion 84 opening toward the outdoor side. The outdoor side upper surface 82 extends horizontally inward from the upper end of the outdoor side finding surface 80. The indoor side upper surface 83 includes an inclined portion 830 extending upward and obliquely outward from the upper end of the indoor side finding surface 81 and a horizontal portion 831 extending horizontally outward from the outdoor side tip of the inclined portion 830.

[0037] An outdoor side horizontal side 85 extending horizontally inward is integrally formed at the lower end of the outdoor side finding surface 80, and an indoor side horizontal side 86 extending horizontally outward is integrally formed at the lower end of the indoor side finding surface 81. A plurality of connecting pieces 87 are fixed at intervals in the opening width direction between the outdoor side horizontal side 85 and the indoor side horizontal side 86. The internal space of the lower frame 8 is filled with mortar M exemplified as a filling material. The shape and fit of the lower frame 8 are not limited to the illustrated embodiment.

[0038] [D―5] Overall Configuration of Waterproof Frame The waterproof frame B is prepared as a rectangular frame composed of an upper frame 5, a leading-edge vertical frame 6, a trailing-edge vertical frame 7, and a lower frame 8. The expected dimensions of the upper frame 5, the leading-edge vertical frame 6, the trailing-edge vertical frame 7, and the lower frame 8 of the waterproof frame B are the same, and the outdoor-facing surfaces 50, 60, 70, 80 are substantially flush (in the illustrated embodiment, the outdoor-facing surface 80 is slightly recessed), and the indoor-facing surfaces 51, 61, 71, 81 are substantially flush (in the illustrated embodiment, the indoor-facing surface 81 is slightly recessed). The upper frame 5, the leading-edge vertical frame 6, the trailing-edge vertical frame 7, and the lower frame 8 of the waterproof frame B are joined (typically by welding) and a waterproof treatment is applied to the joints. The waterproof treatment may be applied at least to the joints between the lower end portions of the leading-edge vertical frame 6 and the lower frame 8, and between the lower end portions of the trailing-edge vertical frame 7 and the lower frame 8. The groove portions 54, 64, 74, 84 that open toward the outdoor side are continuously formed in a circumferential shape, and the watertight member 9 is fitted therein in a circumferential shape.

[0039] In this embodiment, the expected dimensions of the base frame A and the waterproof frame B are the same. In the waterproof door frame composed of the base frame A and the waterproof frame B, the outdoor-facing surfaces 20, 30, 40 of the upper frame 2, the leading-edge vertical frame 3, and the trailing-edge vertical frame 4 of the base frame A, and the outdoor-facing surfaces 50, 60, 70, 80 of the upper frame 5, the leading-edge vertical frame 6, the trailing-edge vertical frame 7, and the lower frame 8 of the waterproof frame B are substantially flush, and the indoor-facing surfaces 21, 31, 41 of the upper frame 2, the leading-edge vertical frame 3, and the trailing-edge vertical frame 4 of the base frame A, and the indoor-facing surfaces 51, 61, 71, 81 of the waterproof frame B are substantially flush.

[0040] [E]Mounting Structure of Waterproof Frame The three-sided frame part composed of the upper frame 5 and the left and right vertical frames 6 and 7 of the waterproof frame B is positioned adjacent to the inside of the base frame A and is fixed to the base frame A. The lower frame 8 of the waterproof frame B is installed on the floor surface FL, and a sealing material S as a watertight means is provided in the gap formed between the three-sided frame part of the waterproof frame B and the base frame A. The three-sided frame part (upper frame 5, left and right vertical frames 6, 7) of the waterproof frame B includes a prospective part facing the opening and a back part located on the opposite side of the prospective part. The back part of the three-sided frame part of the waterproof frame B and the prospective part of the base frame A are connected by connecting means (outdoor side connecting member 16, indoor side connecting member 17), and a sealing material S as a watertight means is provided in the gap formed between the back part of the three-sided frame part of the waterproof frame B and the prospective part of the base frame A. Hereinafter, the mounting structure of the waterproof frame will be described more specifically.

[0041] [E―1] Mounting Structure of the Upper Frame of the Waterproof Frame As shown in FIGS. 2 and 4, the upper frame 5 of the waterproof frame B is fixed to the upper frame 2 of the base frame A. An outdoor side connecting member 16 is fixed to the outdoor side horizontal plane 22 of the upper frame 2 of the base frame A, and an indoor side connecting member 17 is fixed to the indoor side horizontal plane 23. The outdoor side connecting member 16 is fixed to the outdoor side part of the back part of the upper frame 5 of the waterproof frame B, and the indoor side connecting member 17 is fixed to the indoor side part of the back part of the upper frame 5 of the waterproof frame B.

[0042] The outdoor side connecting member 16 is an anchor material (reinforcing bar or angle material) having an L-shaped cross section in a perspective view composed of a prospective piece 160 and a finding piece 161. The prospective piece 160 is fixed to the outdoor side horizontal plane 22 in a horizontal posture, and the finding piece 161 hanging down from the indoor side end of the prospective piece 160 abuts (or may be close) against the outdoor side finding part 24 of the downward convex part of the prospective part (lower surface part) of the upper frame 2. The tip side part of the finding piece 161 extends downward beyond the central horizontal plane 26 of the downward convex part. The contact part between the finding piece 161 of the outdoor side connecting member 16 and the outdoor side finding part 24 may or may not be fixed.

[0043] The indoor connection member 17 is an anchor material (steel bar or angle material) having an L-shaped cross-section when viewed in cross-section from the projected piece 170 and the found piece 171. The projected piece 170 is fixed to the indoor horizontal plane 23 in a horizontal posture, and the found piece 171 hanging down from the outdoor end of the projected piece 170 abuts against the indoor found part 25 of the downward convex part of the projected part (lower surface part) of the upper frame 2. The tip side part of the found piece 171 extends downward beyond the central horizontal plane 26 of the downward convex part. The contact part between the found piece 171 of the indoor connection member 17 and the indoor found part 25 may or may not be fixed.

[0044] On the back surface part (upper side part) of the upper frame 5 of the waterproof frame B, which is opposite to the projected part (lower surface part), there are an outdoor horizontal side 55, an indoor horizontal side 56, and a plurality of connecting pieces 57 provided at intervals in the opening width direction between the outdoor horizontal side 55 and the indoor horizontal side 56. The found piece 161 of the outdoor connection member 16 is fixed to the outdoor part of the connecting piece 57, and the found piece 171 of the indoor connection member 17 is fixed to the indoor part of the connecting piece 57.

[0045] When the three-sided frame part composed of the upper frame 5 and the left and right vertical frames 6 and 7 of the waterproof frame B is positioned adjacent to the inside of the base frame A, the upper frame 5 of the waterproof frame B is positioned adjacent to the lower side of the upper frame 2 of the base frame A. An outdoor gap is formed with the outdoor horizontal plane 22 of the upper frame 2 and the outdoor part of the back surface part of the upper frame 5 (including the outdoor horizontal side 55 of the upper frame 5 and the outdoor part of the connecting piece 57) being spaced apart and facing each other. An indoor gap is formed with the indoor horizontal plane 23 of the upper frame 2 and the indoor part of the back surface part of the upper frame 5 (including the indoor horizontal side 56 of the upper frame 5 and the indoor part of the connecting piece 57) being spaced apart and facing each other. A central gap is formed with the central horizontal plane 26 of the downward convex part of the upper frame 2 and the central part of the back surface part of the upper frame 5 (including the central part of the connecting piece 57) being close to or spaced apart and facing each other. In this embodiment, the outdoor gap and the indoor gap communicate with each other through the central gap, and a single gap is formed in the indoor-outdoor direction between the projected part (lower surface part) of the upper frame 2 and the back surface part of the upper frame 5.

[0046] The tip portions of the finding pieces 161 of the outdoor connection member 16 and the finding pieces 171 of the indoor connection member 17 extend downward beyond the connection piece 57. The finding piece 161 of the outdoor connection member 16 is fixed (typically welded) to the outdoor portion of the connection piece 57, and the finding piece 171 of the indoor connection member 17 is fixed (typically welded) to the indoor portion of the connection piece 57. In this embodiment, the outdoor connection member 16 and the indoor connection member 17 are prepared as a plurality of short members, and a plurality of them are provided at positions spaced apart in the opening width direction so as to correspond to the connection pieces 57 provided with a space in the opening width direction. The prospective piece 160 of each outdoor connection member 16 is fixed (typically welded) to the outdoor horizontal plane 22 of the upper frame 2, the finding piece 161 is fixed (typically welded) to the outdoor portion of the connection piece 57, the prospective piece 170 of each indoor connection member 17 is fixed (typically welded) to the indoor horizontal plane 23 of the upper frame 2, and the finding piece 171 is fixed (typically welded) to the indoor portion of the connection piece 57. The outdoor connection member 16 and the indoor connection member 17 may be short members or long members extending in the length direction (opening width direction) of the upper frame 2 and the upper frame 5 (as long as they can be inserted into and fixed to the outdoor gap and the indoor gap), and the length dimensions and the number are not limited.

[0047] The outdoor gap between the outdoor horizontal plane 22 of the upper frame 2 and the outdoor portion of the back surface portion of the upper frame 5 is filled with mortar M exemplified as a filling material. A sealing material S as a waterproof means is provided between the outdoor horizontal plane 22 of the upper frame 2 and the outdoor horizontal side 55 of the upper frame 5, which is located on the outdoor side of the mortar M. The outdoor finding surface 20 of the upper frame 2 of the base frame A and the outdoor finding surface 50 of the upper frame 5 of the waterproof frame B are flush.

[0048] In the indoor gap between the indoor horizontal plane 23 of the upper frame 2 and the indoor part of the back surface part of the upper frame 5, mortar M exemplified as a filling material is filled. Located on the indoor side of the mortar M, a sealing material S as a waterproofing means is provided between the indoor horizontal plane 23 of the upper frame 2 and the indoor horizontal side 56 of the upper frame 5. Note that the indoor sealing material S may not be provided. The indoor finding surface 21 of the upper frame 2 of the base frame A and the indoor finding surface 51 of the upper frame 5 of the waterproof frame B are flush. Note that in this embodiment, since the outdoor gap and the indoor gap communicate with each other through the central gap, the central gap is also filled with mortar M exemplified as a filling material.

[0049] [E―2] Mounting Structure of the Door-End Vertical Frame of the Waterproof Frame As shown in FIGS. 3 and 5, the door-end vertical frame 6 of the waterproof frame B is fixed to the door-end vertical frame 3 of the base frame A. An outdoor connecting member 16 is fixed to the outdoor facing surface 32 of the door-end vertical frame 3 of the base frame A, and an indoor connecting member 17 is fixed to the indoor facing surface 33 of the door-end vertical frame 3. The outdoor connecting member 16 is fixed to the outdoor part of the back surface part of the door-end vertical frame 6 of the waterproof frame B, and the indoor connecting member 17 is fixed to the indoor part of the back surface part of the door-end vertical frame 6 of the waterproof frame B.

[0050] The outdoor connecting member 16 is an anchor material (reinforcing bar or angle material) having an L-shaped cross section in a perspective view from the perspective piece 160 and the finding piece 161. The perspective piece 160 is fixed to the outdoor facing surface 32 in a posture extending in the perspective direction, and the finding piece 161 extending in the finding direction inward from the indoor end of the perspective piece 160 abuts (or may be close) against the outdoor finding part 34 of the convex part of the perspective part of the door-end vertical frame 3. The tip-side part of the finding piece 161 extends inward beyond the central perspective surface 36 of the convex part. The contact part between the finding piece 161 of the outdoor connecting member 16 and the outdoor finding part 34 may or may not be fixed.

[0051] The indoor connecting member 17 is an anchor material (steel bar or angle material) having an L-shaped cross section when viewed from the side, composed of a projecting piece 170 and a finding piece 171. The projecting piece 170 is fixed to the indoor projecting surface 33 in a posture extending in the projecting direction, and the finding piece 171 extending inward in the finding direction from the outdoor end of the projecting piece 170 abuts against the indoor finding portion 35 of the convex portion of the projecting portion of the door tip side vertical frame 3. The tip side portion of the finding piece 171 extends inward beyond the central horizontal plane 36 of the convex portion. Whether the contact portion between the finding piece 171 of the indoor connecting member 17 and the indoor finding portion 35 is fixed or not is optional.

[0052] On the back surface of the projecting portion of the door tip side vertical frame 6 of the waterproof frame B, on the side opposite to the projecting portion, there are located a plurality of connecting pieces 67 provided with a gap in the opening height direction between the outdoor projecting side 65, the indoor projecting side 66, and between the outdoor projecting side 65 and the indoor projecting side 66. The finding piece 161 of the outdoor connecting member 16 is fixed to the outdoor side portion of the connecting piece 67, and the finding piece 171 of the indoor connecting member 17 is fixed to the indoor side portion of the connecting piece 67.

[0053] When the three-sided frame portion composed of the upper frame 5 and the left and right vertical frames 6, 7 of the waterproof frame B is positioned adjacent to the inside of the base frame A, the door tip side vertical frame 6 of the waterproof frame B is positioned adjacent to the inside of the door tip side vertical frame 3 of the base frame A. The outdoor projecting surface 32 of the door tip side vertical frame 3 and the outdoor side portion of the back surface of the door tip side vertical frame 6 (including the outdoor projecting side 65 of the door tip side vertical frame 6 and the outdoor side portion of the connecting piece 67) are spaced apart and opposed to form an outdoor gap. The indoor projecting surface 33 of the door tip side vertical frame 3 and the indoor side portion of the back surface of the door tip side vertical frame 6 (including the indoor projecting side 66 of the door tip side vertical frame 6 and the indoor side portion of the connecting piece 67) are spaced apart and opposed to form an indoor gap. The central projecting surface 36 of the convex portion of the door tip side vertical frame 3 and the central portion of the back surface of the door tip side vertical frame 6 (including the central portion of the connecting piece 67) are closely opposed or spaced apart to form a central gap. In this embodiment, the outdoor gap and the indoor gap communicate with each other through the central gap, and a single gap is formed in the indoor-outdoor direction between the projecting portion of the door tip side vertical frame 3 and the back surface of the door tip side vertical frame 6.

[0054] The tip portions of the finding pieces 161 of the outdoor connection member 16 and the finding pieces 171 of the indoor connection member 17 extend inward beyond the connection piece 67. The finding piece 161 of the outdoor connection member 16 is fixed (typically welded) to the outdoor portion of the connection piece 67, and the finding piece 171 of the indoor connection member 17 is fixed (typically welded) to the indoor portion of the connection piece 67. In this embodiment, the outdoor connection member 16 and the indoor connection member 17 are prepared as a plurality of short members, and a plurality of them are provided at intervals in the opening width direction at positions corresponding to the connection pieces 67 provided at intervals in the opening height direction. The prospective piece 160 of each outdoor connection member 16 is fixed (typically welded) to the outdoor prospective surface 32 of the door tip side vertical frame 3, the finding piece 161 is fixed (typically welded) to the outdoor portion of the connection piece 67, the prospective piece 170 of each indoor connection member 17 is fixed (typically welded) to the indoor prospective surface 33 of the door tip side vertical frame 3, and the finding piece 171 is fixed (typically welded) to the indoor portion of the connection piece 67. The outdoor connection member 16 and the indoor connection member 17 may be short members or long members extending in the length direction (opening height direction) of the door tip side vertical frame 3 and the door tip side vertical frame 6 (as long as they can be inserted into and fixed to the outdoor gap and the indoor gap), and the length dimensions and the number are not limited.

[0055] The outdoor gap between the outdoor prospective surface 32 of the door tip side vertical frame 3 and the outdoor portion of the back surface portion of the door tip side vertical frame 6 is filled with mortar M exemplified as a filling material. A sealing material S as a waterproof means is provided between the outdoor prospective surface 32 of the door tip side vertical frame 3 and the outdoor prospective edge 65 of the door tip side vertical frame 6, located on the outdoor side of the mortar M. The outdoor finding surface 30 of the door tip side vertical frame 3 of the base frame A and the outdoor finding surface 60 of the door tip side vertical frame 6 of the waterproof frame B are flush.

[0056] In the indoor-side gap between the indoor-side expected surface 33 of the door-end vertical frame 3 and the indoor-side part of the back surface of the door-end vertical frame 6, mortar M, which is exemplified as a filling material, is filled. A sealing material S as a waterproofing means is provided between the indoor-side expected surface 33 of the door-end vertical frame 3 and the indoor-side expected edge 66 of the door-end vertical frame 6, which is located on the indoor side of the mortar M. Note that the indoor-side sealing material S may not be provided. The indoor-side found surface 31 of the door-end vertical frame 3 of the base frame A and the indoor-side found surface 61 of the door-end vertical frame 6 of the waterproof frame B are flush. Note that in this embodiment, since the outdoor-side gap and the indoor-side gap communicate with each other via the central gap, the central gap is also filled with mortar M, which is exemplified as a filling material.

[0057] As shown in FIG. 5, a plurality of short support members 18 are provided at intervals in the height direction in the outdoor-side part of the connecting piece 67 and are located in the outdoor-side gap. The support member 18 includes a fixing piece 180 that extends in the expected direction and is fixed to the outdoor-side part of the connecting piece 67, and a support piece 181 that extends outward in the found direction from the outdoor-side end of the fixing piece 180. In one aspect, the support member 18 is attached to the connecting piece 67 at a factory in advance. A long plate-shaped receiving piece 19 that extends in the height direction is fixed to the front surface of the support piece 181 of the support member 18. The receiving piece 19 has a width dimension that is substantially the same as the width dimension of the outdoor-side gap and forms the bottom of the sealing material S provided on the outdoor side of the outdoor-side gap.

[0058] [E-3] Mounting Structure of the Door-End Vertical Frame of the Waterproof Frame As shown in FIGS. 3 and 6, the door-end vertical frame 7 of the waterproof frame B is fixed to the door-end vertical frame 4 of the base frame A. An outdoor-side connecting member 16 is fixed to the outdoor-side expected surface 42 of the door-end vertical frame 4 of the base frame A, and an indoor-side connecting member 17 is fixed to the indoor-side expected surface 43. The outdoor-side connecting member 16 is fixed to the outdoor-side part of the back surface of the door-end vertical frame 7 of the waterproof frame B, and the indoor-side connecting member 17 is fixed to the indoor-side part of the back surface of the door-end vertical frame 7 of the waterproof frame B.

[0059] The outdoor connecting member 16 is an anchor material (steel bar or angle material) with an L-shaped cross-section view composed of a projecting piece 160 and a finding piece 161. The projecting piece 160 is fixed to the outdoor projecting surface 32 in a posture extending in the projecting direction, and the finding piece 161 extending inward in the finding direction from the indoor-side end of the projecting piece 160 abuts (or may be close) against the outdoor finding portion 44 of the convex portion of the projecting portion of the door-bottom side vertical frame 4. The tip-side portion of the finding piece 161 extends inward beyond the central projecting surface 46 of the convex portion. The contact portion between the finding piece 161 of the outdoor connecting member 16 and the outdoor finding portion 44 may or may not be fixed.

[0060] The indoor connecting member 17 is an anchor material (steel bar or angle material) with an L-shaped cross-section view composed of a projecting piece 170 and a finding piece 171. The projecting piece 170 is fixed to the indoor projecting surface 43 in a posture extending in the projecting direction, and the finding piece 171 extending inward from the outdoor-side end of the projecting piece 170 abuts against the indoor finding portion 45 of the convex portion of the projecting portion of the door-bottom side vertical frame 4. The tip-side portion of the finding piece 171 extends inward beyond the central projecting surface 46 of the convex portion. The contact portion between the finding piece 171 of the indoor connecting member 17 and the indoor finding portion 45 may or may not be fixed.

[0061] On the back surface portion opposite to the projecting portion of the door-bottom side vertical frame 7 of the waterproof frame B, there are a plurality of connecting pieces 77 provided with a gap in the opening height direction between the outdoor projecting side 75, the indoor projecting side 76, and between the outdoor projecting side 75 and the indoor projecting side 76. The finding piece 161 of the outdoor connecting member 16 is fixed to the outdoor-side portion of the connecting piece 77, and the finding piece 171 of the indoor connecting member 17 is fixed to the indoor-side portion of the connecting piece 77.

[0062] When the three-sided frame part composed of the upper frame 5 and the left and right vertical frames 6 and 7 of the waterproof frame B is positioned adjacent to the inside of the base frame A, the vertical frame 7 on the door end side of the waterproof frame B is positioned adjacent to the inside of the vertical frame 4 on the door end side of the base frame A. The outdoor-facing surface 42 of the vertical frame 4 on the door end side and the outdoor-side part of the back surface part of the vertical frame 7 on the door end side (including the outdoor-facing edge 75 of the vertical frame 7 on the door end side and the outdoor-side part of the connecting piece 77) are spaced apart and opposed to form an outdoor-side gap. The indoor-facing surface 43 of the vertical frame 4 on the door end side and the indoor-side part of the back surface part of the vertical frame 7 on the door end side (including the indoor-facing edge 76 of the vertical frame 7 on the door end side and the indoor-side part of the connecting piece 77) are spaced apart and opposed to form an indoor-side gap. The central-facing surface 46 of the convex part of the vertical frame 4 on the door end side and the central part of the back surface part of the vertical frame 7 on the door end side (including the central part of the connecting piece 77) are close or spaced apart and opposed to form a central gap. In this embodiment, the outdoor-side gap and the indoor-side gap communicate with each other through the central gap, and one gap is formed across the indoor-outdoor direction between the projecting part of the vertical frame 4 on the door end side and the back surface part of the vertical frame 7 on the door end side.

[0063] The tip parts of the finding pieces 161 of the outdoor-side connecting member 16 and the finding pieces 171 of the indoor-side connecting member 17 extend inward beyond the connecting piece 77. The finding piece 161 of the outdoor-side connecting member 16 is fixed (typically welded) to the outdoor-side part of the connecting piece 77, and the finding piece 171 of the indoor-side connecting member 17 is fixed (typically welded) to the indoor-side part of the connecting piece 77. In this embodiment, the outdoor-side connecting member 16 and the indoor-side connecting member 17 are prepared as a plurality of short members, and a plurality of them are provided at intervals in the opening width direction at positions corresponding to the connecting pieces 77 provided at intervals in the opening height direction. The projecting piece 160 of each outdoor-side connecting member 16 is fixed (typically welded) to the outdoor-facing surface 42 of the vertical frame 4 on the door end side, the finding piece 161 is fixed (typically welded) to the outdoor-side part of the connecting piece 77, the projecting piece 170 of each indoor-side connecting member 17 is fixed (typically welded) to the indoor-facing surface 43 of the vertical frame 4 on the door end side, and the finding piece 171 is fixed (typically welded) to the indoor-side part of the connecting piece 77. The outdoor-side connecting member 16 and the indoor-side connecting member 17 may be short members or long members extending in the length direction (opening height direction) of the vertical frame 4 on the door end side and the vertical frame 7 on the door end side (as long as they can be inserted into and fixed in the outdoor-side gap and the indoor-side gap), and the length dimensions and the number are not limited.

[0064] Between the outdoor-facing surface 42 of the door-end vertical frame 4 and the outdoor part of the back surface of the door-end vertical frame 7, the outdoor gap is filled with mortar M exemplified as a filling material. Located on the outdoor side of the mortar M, a sealing material S as outdoor waterproof means is provided between the outdoor-facing surface 42 of the door-end vertical frame 4 and the outdoor-facing edge 75 of the door-end vertical frame 7. The outdoor-facing surface 40 of the door-end vertical frame 4 of the base frame A and the outdoor-facing surface 70 of the door-end vertical frame 7 of the waterproof frame B are flush.

[0065] Between the indoor-facing surface 43 of the door-end vertical frame 4 and the indoor part of the back surface of the door-end vertical frame 7, the indoor gap is filled with mortar M exemplified as a filling material. Located on the indoor side of the mortar M, a sealing material S as indoor waterproof means is provided between the indoor-facing surface 43 of the door-end vertical frame 4 and the indoor-facing edge 76 of the door-end vertical frame 7. Note that the indoor sealing material S may not be provided. The indoor-facing surface 41 of the door-end vertical frame 4 of the base frame A and the indoor-facing surface 71 of the door-end vertical frame 7 of the waterproof frame B are flush. In this embodiment, since the outdoor gap and the indoor gap communicate with each other through the central gap, the central gap will also be filled with mortar M exemplified as a filling material.

[0066] As shown in FIG. 6, on the outdoor part of the connecting piece 77, a plurality of short support members 18 are provided at intervals in the height direction and are located in the outdoor gap. The support member 18 consists of a fixing piece 180 that extends in the expected direction and is fixed to the outdoor part of the connecting piece 77, and a support piece 181 that extends outward in the finding direction from the outdoor end of the fixing piece 180. In one aspect, the support member 18 is attached to the connecting piece 77 at the factory in advance. A long plate-shaped receiving piece 19 that extends in the height direction is fixed to the front surface of the support piece 181 of the support member 18. The receiving piece 19 has a width dimension that is substantially the same as the width dimension of the outdoor gap and forms the bottom of the sealing material S provided on the outdoor side of the outdoor gap.

[0067] [E-4] Mounting Structure of the Lower Frame of the Waterproof Frame As shown in Fig. 2, the lower frame 8 of the waterproof frame B is anchor-fixed to the housing C via the lower connecting piece 87. The gap between the lower frame 8 and the housing C in the floor surface FL is filled with mortar M exemplified as a filler. In this embodiment, most of the outdoor-facing surface 80 and the indoor-facing surface 81 of the lower frame 8 are located within the floor surface FL. A sealing material S exemplified as a waterproofing means is provided between the upper end portion of the outdoor-facing surface 80 of the lower frame 8 and the outdoor floor surface FL.

[0068] [E―5]Mounting structure of waterproof frame for base frames with different shapes The shape of the base frame A is not limited to the embodiments shown in Figs. 2 to 6. Other shapes of the base frame A are exemplified in Fig. 7. As shown in Fig. 7, the door-tip side vertical frame 3a of the base frame A is a long member located on the door-tip side of the opening and extending in the opening height direction, including an outdoor-facing surface 30a, an indoor-facing surface 31a with a dimension larger than the outdoor-facing surface 30a (not limited to this, it may be the same dimension), and a projected portion extending in the indoor-outdoor direction across the inner ends of the outdoor-facing surface 30a and the indoor-facing surface 31a. The projected portion includes an outdoor projected surface 32a extending in the projected direction from the inner end of the outdoor-facing surface 30a towards the indoor side, an indoor projected surface 33a located inward of the outdoor projected surface 32a and extending in the projected direction from the inner end of the indoor-facing surface 31a towards the outdoor side, and a groove portion 34a formed at the step portion between the indoor end of the outdoor projected surface 32a and the outdoor end of the indoor projected surface 33a and opening towards the outdoor side. The shape of the door-tip side vertical frame 6 of the waterproof frame B is the same as that shown in Figs. 3 and 5, and the above description can be incorporated by reference.

[0069] An outdoor connecting member 16a is fixed to the outdoor projected surface 32a of the door-tip side vertical frame 3a of the base frame A, and an indoor connecting member 17a is fixed to the indoor projected surface 33a. The outdoor connecting member 16a is connected to the outdoor portion of the back surface of the door-tip side vertical frame 6 of the waterproof frame B, and the indoor connecting member 17a is connected to the indoor portion of the back surface of the door-tip side vertical frame 6 of the waterproof frame B.

[0070] The outdoor connection member 16a is an anchor material (such as a reinforcing bar or an angle material) having an L-shaped cross-section view composed of a projecting piece 160a and a finding piece 161a. The projecting piece 160a is fixed to the outdoor projecting surface 32a in a posture extending in the projecting direction, and the finding piece 161a extending in the finding direction inward from the indoor-side end of the projecting piece 160a abuts against the tip 330a of the outdoor projecting piece on the indoor-side projecting surface 33a of the door-tip side vertical frame 3a. The tip-side part of the finding piece 161a extends inward and is fixed to the outdoor-side part of the connecting piece 67.

[0071] The indoor connection member 17a is an anchor material (such as a reinforcing bar or an angle material) having an L-shaped cross-section view composed of a projecting piece 170a and a finding piece 171a. The projecting piece 170a is fixed to the indoor projecting surface 33a in a posture extending in the projecting direction, and the tip-side part of the finding piece 171a extends inward and is fixed to the indoor-side part of the connecting piece 67.

[0072] When the three-sided frame part composed of the upper frame 5 and the left and right vertical frames 6 and 7 of the waterproof frame B is positioned adjacent to the inside of the base frame A, the door-tip side vertical frame 6 of the waterproof frame B is positioned adjacent to the inside of the door-tip side vertical frame 3a of the base frame A. The outdoor projecting surface 32a of the door-tip side vertical frame 3a and the outdoor-side part of the back surface part of the door-tip side vertical frame 6 (including the outdoor projecting edge 65 of the door-tip side vertical frame 6 and the outdoor-side part of the connecting piece 67) are spaced apart and opposed to form an outdoor gap. The indoor projecting surface 33a of the door-tip side vertical frame 3a and the indoor-side part of the back surface part of the door-tip side vertical frame 6 (including the indoor projecting edge 66 of the door-tip side vertical frame 6 and the indoor-side part of the connecting piece 67) are spaced apart and opposed to form an indoor gap. The outdoor gap and the indoor gap communicate with each other, and a single gap is formed across the indoor-outdoor direction between the projecting part of the door-tip side vertical frame 3a and the back surface part of the door-tip side vertical frame 6.

[0073] A mortar M, which is an example of a filler, is filled in the gap between the projected portions (outdoor projected surface 32a and indoor projected surface 33a) of the door-end vertical frame 3a and the back surface portion of the door-end vertical frame 6. A sealing material S as outdoor watertight means is provided between the outdoor projected surface 32a of the door-end vertical frame 3a and the outdoor projected edge 65 of the door-end vertical frame 6, which is located on the outdoor side of the mortar M. A sealing material S as indoor watertight means is provided between the indoor projected surface 33a of the door-end vertical frame 3a and the indoor projected edge 66 of the door-end vertical frame 6, which is located on the indoor side of the mortar M. Note that the indoor sealing material S may not be provided. Regarding other shapes of the base frame A, although the door-end vertical frame 3a has been described as a representative, the upper frame and the door-bottom vertical frame also have the same shape.

[0074] [F]Construction method of waterproof door frame The waterproof door frame according to the present embodiment can be obtained by modifying an existing door device. FIG. 8 is a longitudinal sectional view illustrating the door frame of an existing door device. The base frame A according to the present embodiment can be obtained based on the door frame of an existing door device. More specifically, the existing door frame is a four-sided frame composed of an upper frame 2, a door-end vertical frame 3, a door-bottom vertical frame 4, and a lower frame (sill) 8'. The base frame A according to the present embodiment can be obtained by removing the lower frame (sill) 8' from the existing door frame.

[0075] That is, the construction method of the waterproof door frame according to the present embodiment is (1) In an existing door device, a first step of removing the door leaf and the sill 8' to obtain a base frame A, which is a three-sided frame composed of the upper frame 2 and the left and right vertical frames 3, 4; (2) A second step of positioning and fixing a three-sided frame portion composed of the upper frame 5 and the left and right vertical frames 6, 7 of a waterproof frame B composed of the upper frame 5, the left and right vertical frames 6, 7, and the lower frame 8 adjacent to the inside of the base frame A; (3) A third step of installing the lower frame 8 of the waterproof frame B on the floor surface FL; (4) A fourth step of providing watertight means in the gap formed between the waterproof frame B and the base frame A. It consists of. The order of the second step and the third step is not limited, and the second step and the third step may be executed substantially simultaneously.

[0076] In the first step, the step of removing the tatami fold 8' is, in one aspect, the step of removing the entire tatami fold 8', but may also be the step of removing a part of the tatami fold 8' (for example, removing while leaving both ends in the opening width direction). It is understood by those skilled in the art that the step of removing the tatami fold 8' may include the work of shaving the floor surface FL.

[0077] In the second step and the third step, a square waterproof frame B formed by joining (typically welding) the upper frame 5, the door tip side vertical frame 6, the door butt side vertical frame 7, and the lower frame 8 of the waterproof frame B is prepared. At least, waterproof treatment is applied to the joint portion between the lower end portion of the door tip side vertical frame 6 and the lower frame 8, and the joint portion between the lower end portion of the door butt side vertical frame 7 and the lower frame 8. The waterproof frame B is assembled at the factory and carried into the site as the waterproof frame B. Note that the outdoor side connecting member 16 and the indoor side connecting member 17 are attached at the site (typically attached by welding).

[0078] In the second step, the step of fixing the three-sided frame portion composed of the upper frame 5 and the left and right vertical frames 6 and 7 of the waterproof frame B to the base frame A is to position the back surface portion of the three-sided frame portion of the waterproof frame B inside the prospective portion of the base frame A with a gap, and connect the outdoor side portion of the prospective portion of the base frame A and the outdoor side portion of the back surface portion of the three-sided frame portion of the waterproof frame B by the outdoor side connecting member 16, and connect the indoor side portion of the prospective portion of the base frame A and the indoor side portion of the back surface portion of the three-sided frame portion of the waterproof frame B by the indoor side connecting member 17. The second step will be described in more detail below.

[0079] An outdoor connecting member 16 is inserted from the outdoor side into an outdoor gap formed between the outdoor side parts (outdoor horizontal plane 22, outdoor projected surface 32, outdoor projected surface 42) of the projected part of the base frame A and the outdoor side part of the back surface of the three-sided frame part of the waterproof frame B in a first posture (L-shaped in plan view for the upper gap and L-shaped in side view for the side gap). The outdoor connecting member 16 inserted into the outdoor gap in the first posture is rotated within the outdoor gap to a second posture (L-shaped in side view for the upper gap and L-shaped in plan view for the side gap). Then, the projected piece 160 of the outdoor connecting member 16 is fixed (typically by welding from the outdoor side) to the outdoor side parts (outdoor horizontal plane 22, outdoor projected surface 32, outdoor projected surface 42) of the projected part of the base frame A, and the locating piece 161 of the outdoor connecting member 16 is fixed (typically by welding from the outdoor side) to the outdoor side parts (outdoor side parts of the connecting pieces 57, 67, 77) of the back surface of the waterproof frame B.

[0080] An indoor connecting member 17 is inserted from the indoor side into an indoor gap formed between the indoor side parts (indoor horizontal plane 23, indoor projected surface 33, indoor projected surface 43) of the projected part of the base frame A and the indoor side part of the back surface of the three-sided frame part of the waterproof frame B in a first posture (L-shaped in plan view for the upper gap and L-shaped in side view for the side gap). The indoor connecting member 17 inserted into the indoor gap in the first posture is rotated within the indoor gap to a second posture (L-shaped in side view for the upper gap and L-shaped in plan view for the side gap). Then, the projected piece 170 of the indoor connecting member 17 is fixed (typically by welding from the indoor side) to the indoor side parts (indoor horizontal plane 23, indoor projected surface 33, indoor projected surface 43) of the projected part of the base frame A, and the locating piece 171 of the indoor connecting member 17 is fixed (typically by welding from the indoor side) to the indoor side parts (indoor side parts of the connecting pieces 57, 67, 77) of the back surface of the waterproof frame B.

[0081] After connecting the projected part of the base frame A and the back surface of the three-sided frame part of the waterproof frame B using the outdoor connecting member 16 and the indoor connecting member 17, mortar M, exemplified as a filling material, is filled into the gap (including the outdoor gap and the indoor gap) between the projected part of the base frame A and the back surface of the three-sided frame part of the waterproof frame B.

[0082] In the third step, the step of installing the lower frame 8 of the waterproof frame B on the floor surface FL includes anchor-fixing the lower frame 8 to the building body C within the floor surface FL. Mortar M, which is exemplified as a filling material, is filled into the lower frame 8. Mortar M, which is exemplified as a caulking material, is filled into the space between the lower frame 8 and the building body C within the floor surface FL. A sealing material S, which is exemplified as a watertight means, is provided between the upper end portion of the outdoor-facing surface 80 of the lower frame 8 and the outdoor floor surface FL.

[0083] In the fourth step, a sealing material S, which is exemplified as an outdoor watertight means, is provided on the outdoor side of the outdoor gap of the gap between the prospective part of the base frame A and the back surface part of the three-sided frame part of the waterproof frame B, and a sealing material S, which is exemplified as an indoor watertight means, is provided on the indoor side of the indoor gap. A three-sided sealing material S is provided between the prospective part of the base frame A of the waterproof door frame and the prospective part of the waterproof frame B located inside the prospective part of the base frame A in a front view. Outside the prospective part of the base frame A, a three-sided sealing material S' is provided between it and the building body C (see Figure 1). The lower end of the three-sided sealing material S contacts the end part in the length direction (opening width direction) of the sealing material S provided at the upper end part of the outdoor-facing surface 80 of the lower frame 8, thereby forming a four-sided sealing material S. The groove parts 54, 64, 74, 84 that open towards the outdoor side are continuously four-sided, and a watertight member 9 is fitted into the four-sided groove parts 54, 64, 74, 84 in a four-sided manner. The timing of attaching the watertight member 9 is not limited. Also, a sealing material S'' is provided on the outdoor side of the outdoor sealing material S' between the outdoor parts of the vertical frame 3 and the butt side vertical frame 4 of the base frame A at the door end and the building body C (see Figures 3, 5, and 6). The timing of providing the sealing material S'' is not limited.

Explanation of Reference Signs

[0084] 1 Door body A Base frame 2 Upper frame of the base frame 20 Outdoor-facing surface 21 Indoor-facing surface 22 Outdoor horizontal plane (prospective part, first prospective surface) 23 Indoor horizontal plane (prospective part, second prospective surface) 24 Outdoor finding part (outdoor contact part) 25 Indoor finding part (indoor contact part) 3 Vertical frame on the door tip side of the base frame 30 Outdoor finding surface 31 Indoor finding surface 32 Outdoor prospective surface (prospective part, first prospective surface) 33 Indoor prospective surface (prospective part, second prospective surface) 34 Outdoor finding part (outdoor contact part) 35 Indoor finding part (indoor contact part) 330a Tip of the outdoor projection (outdoor contact part) 4 Vertical frame on the door butt side of the base frame 40 Outdoor finding surface 41 Indoor finding surface 42 Outdoor prospective surface (prospective part, first prospective surface) 43 Indoor prospective surface (prospective part, second prospective surface) 44 Outdoor finding part (outdoor contact part) 45 Indoor finding part (indoor contact part) B Waterproof frame 5 Upper frame of the waterproof frame 50 Outdoor finding surface 51 Indoor finding surface 52 Outdoor lower surface (prospective part) 53 Indoor lower surface (prospective part) 55 Outdoor horizontal side (rear part) 56 Indoor horizontal side (rear part) 57 Connecting piece (rear part) 6 Vertical frame on the door tip side of the waterproof frame 60 Outdoor finding surface 61 Indoor finding surface 62 Outdoor prospective surface (prospective part) 63 Indoor prospective surface (prospective part) 65 Outdoor prospective side (rear part) 66 Indoor prospective side (rear part) 67 Connecting piece (rear part) 7 Vertical frame on the door butt side of the waterproof frame 70 Indoor finding surface 71 Outdoor finding surface 72 Outdoor prospective surface (prospective part) 73 Indoor side expected surface (expected part) 75 Outdoor side expected edge (back part) 76 Indoor side expected edge (back part) 77 Connecting piece (back part) 8 Lower frame of waterproof frame (sill) 80 Outdoor side found surface 81 Indoor side found surface 8´ Lower frame of existing door frame (sill) 9 Watertight member 16 Outdoor side connecting member (connecting means) 160 Expected piece 161 Found piece 17 Indoor side connecting member (connecting means) 170 Expected piece 171 Found piece S Sealing material (watertight means) FL Floor surface

Claims

1. A door frame formed of a base frame and a waterproof frame provided with a watertight member, wherein the base frame is attached to an opening, the base frame is a three-sided frame composed of an upper frame and left and right vertical frames, and at least the vertical frames of the base frame are fixed with an outdoor side connecting member and an indoor side connecting member, the waterproof frame is a four-sided frame composed of an upper frame, left and right vertical frames, and a lower frame, is positioned adjacent to the inside of the base frame, and the vertical frames of the waterproof frame are connected to the outdoor side connecting member and the indoor side connecting member, thereby being fixed to the base frame, watertight means is provided in a gap formed between the vertical frame of the waterproof frame and the vertical frame of the base frame, A waterproof door frame.

2. An outdoor side connecting member and an indoor side connecting member are fixed to the upper frame of the base frame, the upper frame of the waterproof frame is connected to the outdoor side connecting member and the indoor side connecting member, watertight means is provided in a gap formed between the upper frame of the waterproof frame and the upper frame of the base frame, The waterproof door frame according to Claim 1.

3. A three-sided frame portion composed of the upper frame of the waterproof frame and the left and right vertical frames is positioned adjacent to the inside of the base frame and is fixed to the base frame, the lower frame of the waterproof frame is installed on the floor surface, the watertight means is provided in a gap formed between the three-sided frame portion of the waterproof frame and the base frame, The waterproof door frame according to Claim 2.

4. The base frame includes a projected portion, the three-sided frame portion includes a projected portion facing the opening and a back portion located on the opposite side of the projected portion, the back portion of the three-sided frame portion and the projected portion of the base frame are connected by the outdoor side connecting member and the indoor side connecting member, the watertight means is provided in a gap formed between the back portion and the projected portion, The waterproof door frame according to Claim 3.

5. The base frame includes a projected portion, the projected portion of the base frame includes a first projected surface on the outdoor side and a second projected surface on the indoor side, the outdoor side connecting member is fixed to the first projected surface, the indoor side connecting member is fixed to the second projected surface, The waterproof door frame according to any one of Claims 1 to 4.

6. The projected portion of the base frame is located on the indoor side of the first projected surface and includes an outdoor side abutting portion, The outdoor side connecting member includes a projecting piece and a locating piece. The projecting piece abuts against the first projecting surface, and is fixed to the first projecting surface in a state where the base end side of the locating piece abuts against or is close to the outdoor side abutting portion. The tip end side of the locating piece of the outdoor side connecting member is connected to the back surface portion of the triple frame portion. The waterproof door frame according to claim 5 (limited to the dependent claims of claim 4).

7. The projecting portion of the base frame is located on the outdoor side of the second projecting surface and includes an indoor side abutting portion. The indoor side connecting member includes a projecting piece and a locating piece. The projecting piece abuts against the second projecting surface, and is fixed to the second projecting surface in a state where the base end side of the locating piece abuts against or is close to the indoor side abutting portion. The tip end side of the locating piece of the indoor side connecting member is connected to the back surface portion of the triple frame portion. The waterproof door frame according to claim 6.

8. There is an outdoor side gap between the first projecting surface of the base frame and the outdoor side portion of the back surface portion of the triple frame portion, and they face each other. The projecting piece and the base end side of the locating piece of the outdoor side connecting member are located in the outdoor side gap. On the outdoor side of the outdoor side gap, outdoor side watertight means is provided on the outdoor side of the projecting piece of the outdoor side connecting member. There is an indoor side gap between the second projecting surface of the base frame and the indoor side portion of the back surface portion of the triple frame portion, and they face each other. The projecting piece and the base end side of the locating piece of the indoor side connecting member are located in the indoor side gap. On the indoor side of the indoor side gap, indoor side watertight means is provided on the indoor side of the projecting piece of the indoor side connecting member. The waterproof door frame according to any one of claims 6 and 7.

9. The lower frame of the waterproof frame is anchor-fixed to the building body in the floor surface. The waterproof door frame according to any one of claims 3 to 7 (limited to the dependent claims of claim 3).

10. The waterproof frame is formed by joining an upper frame, left and right vertical frames, and a lower frame. At least, the joint portions of the left and right vertical frames and the lower frame are subjected to waterproof treatment. The waterproof door frame according to any one of claims 1 to 9.

11. The outdoor side locating surface of the base frame and the outdoor side locating surface of the waterproof frame are substantially flush. The waterproof door frame according to any one of claims 1 to 10.

12. The projected dimensions of the base frame and the projected dimensions of the waterproof frame are substantially the same. The indoor side locating surface of the base frame and the indoor side locating surface of the waterproof frame are substantially flush. The waterproof door frame according to claim 11.

13. In an existing door device, a first step of removing a door body and a threshold from an opening frame of the door device to obtain a base frame which is a three-sided frame composed of an upper frame and left and right vertical frames; A second step of fixing an outdoor side connecting member and an indoor side connecting member to at least the vertical frames of the base frame; A waterproof frame is a four-sided frame composed of an upper frame, left and right vertical frames, and a lower frame. The waterproof frame is positioned adjacent to the inside of the base frame, and the vertical frames of the waterproof frame are connected to the outdoor side connecting member and the indoor side connecting member to be fixed to the base frame in a third step; A fourth step of providing a watertight means in a gap formed between the vertical frames of the waterproof frame and the vertical frames of the base frame; A fifth step of providing a watertight member that is in close contact with the door body when the door body is in a closed posture on the waterproof frame after or before the third step; A construction method of a waterproof door frame comprising the above steps.

14. In the second step, an outdoor side connecting member and an indoor side connecting member are fixed to the upper frame of the base frame; In the third step, the upper frame of the waterproof frame is connected to the outdoor side connecting member and the indoor side connecting member of the upper frame of the base frame; In the fourth step, a watertight means is provided in a gap formed between the upper frame of the waterproof frame and the upper frame of the base frame; The construction method of the waterproof door frame according to claim 13.

15. The third step is a step of positioning a three-sided frame portion composed of the upper frame and the left and right vertical frames of a four-sided frame composed of an upper frame, left and right vertical frames, and a lower frame adjacent to the inside of the base frame and fixing it to the base frame; Furthermore, the step includes installing the lower frame of the four-sided frame on the floor surface; The fourth step is a step of providing the watertight means in a gap formed between the three-sided frame portion of the four-sided frame and the base frame; The construction method of the waterproof door frame according to claim 14.

16. The base frame includes a projected portion; The three-sided frame portion includes a projected portion facing the opening and a back portion located on the opposite side of the projected portion; The step of fixing the three-sided frame portion to the base frame includes connecting the back portion of the three-sided frame portion and the projected portion of the base frame using the outdoor side connecting member and the indoor side connecting member; The construction method of the waterproof door frame according to claim 15.

17. The projected portion of the base frame includes a first projected surface on the outdoor side and a second projected surface on the indoor side; The outdoor side connecting member fixed to the first projected surface is fixed to the outdoor side portion of the back portion of the three-sided frame portion; Fix the indoor-side connecting member fixed to the second expected surface to the indoor-side portion of the back surface portion of the three-sided frame portion. The method for constructing a waterproof door frame according to claim 16.

18. The expected portion of the base frame is located on the indoor side of the first expected surface and is provided with an outdoor-side abutting portion. The outdoor-side connecting member includes an expected piece and a locating piece. With the base end side of the locating piece abutted or proximate to the outdoor-side abutting portion, fix the expected piece to the first expected surface. Fix the tip end side of the locating piece of the outdoor-side connecting member to the outdoor-side portion of the back surface portion of the three-sided frame portion. The method for constructing a waterproof door frame according to claim 17.

19. The expected portion of the base frame is located on the outdoor side of the second expected surface and is provided with an indoor-side abutting portion. The indoor-side connecting member includes an expected piece and a locating piece. With the base end side of the locating piece abutted or proximate to the indoor-side abutting portion, fix the expected piece to the second expected surface. Fix the tip end side of the locating piece of the indoor-side connecting member to the indoor-side portion of the back surface portion of the three-sided frame portion. The method for constructing a waterproof door frame according to claim 18.

20. The first expected surface of the base frame and the outdoor-side portion of the back surface portion of the three-sided frame portion face each other with an outdoor-side gap therebetween. Insert the outdoor-side connecting member from the outdoor-side gap and fix it to the first expected surface and the outdoor-side portion of the back surface portion of the three-sided frame portion. The second expected surface of the base frame and the indoor-side portion of the back surface portion of the three-sided frame portion face each other with an indoor-side gap therebetween. Insert the indoor-side connecting member from the indoor-side gap and fix it to the second expected surface and the indoor-side portion of the back surface portion of the three-sided frame portion. Provide outdoor-side watertight means on the outdoor side of the outdoor-side gap. Provide indoor-side watertight means on the indoor side of the indoor-side gap. The method for constructing a waterproof door frame according to any one of claims 17 to 19.

21. The step of installing the lower frame of the waterproof frame on the floor surface includes anchor-fixing the lower frame to the building structure within the floor surface. The method for constructing a waterproof door frame according to any one of claims 15 to 20.

22. A door frame formed from a base frame and a waterproof frame provided with a watertight member. The base frame is attached to the opening. The waterproof frame is positioned adjacent to the inside of the base frame and is fixed to the base frame. Watertight means is provided in the gap formed between the waterproof frame and the base frame. The outdoor-facing surface of the base frame and the outdoor-facing surface of the waterproof frame are substantially flush. In a front view, the watertight means is positioned between the outdoor-facing surface of the base frame and the outdoor-facing surface of the waterproof frame. Waterproof door frame.

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