JP7698463B2 - Waterproof door frame and construction method of waterproof door frame - Google Patents

Description

The present invention relates to a waterproof door frame and a method for constructing a waterproof door frame.

For general steel doors, a new door frame and door device are formed by applying a cover construction method to the existing frame (Patent Document 1).

However, there have been no attempts to construct a waterproof door frame using an existing frame. Because a waterproof door frame requires waterproof performance and strength to withstand expected water pressure, it is difficult to obtain a waterproof door frame by simply applying the existing cover construction method.
JP 8-260822 A

The present invention aims to provide a waterproof door frame using an existing frame.

The technical means adopted in the present invention are:
A door frame formed of a base frame and a waterproof frame having a watertight member,
The base frame is attached to an opening,
The waterproof frame is located adjacent to the inside of the base frame and is fixed to the base frame,
A watertight means is provided in a gap formed between the waterproof frame and the base frame.
A waterproof door frame.
In one embodiment, the outdoor facing surface of the base frame and the outdoor facing surface of the waterproof frame are substantially flush with each other.
In one embodiment, the projected dimensions of the base frame and the projected 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 with each other.

In one embodiment, the base frame is a three-sided frame consisting of an upper frame and left and right vertical frames,
The waterproof frame is a four-sided frame consisting of an upper frame, left and right vertical frames, and a lower frame,
The three-sided frame portion consisting of the upper frame and the left and right vertical frames of the waterproof frame is located 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 a floor surface,
A watertight means is provided in a gap formed between the three-sided frame portion of the waterproof frame and the base frame.
In one embodiment, the lower frame of the waterproof frame is anchored to a structural component within the floor surface.
In one embodiment, the waterproof frame is formed by joining an upper frame, left and right vertical frames, and a lower frame,
At least the joints between the left and right vertical frames and the bottom frame are waterproofed.

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

In one aspect, the projection portion of the base frame is located on the indoor side of the first projection surface and includes an outdoor abutment portion,
The outdoor side connecting member includes a projection piece and a facing piece, the projection piece abuts against the first projection surface, and a base end side of the facing piece is fixed to the first projection surface in a state in which the base end side is abutted against or adjacent to the outdoor side abutted portion,
The tip side of the outer connecting piece of the outdoor side connecting member is connected to the back portion of the three-sided frame portion.
In one embodiment, the outdoor contact portion is an outdoor facing portion.
In one aspect, the outdoor-side abutted portion is a tip of an outdoor-side protruding piece of the second visible surface (the indoor-side visible surface).

In one aspect, the projection portion of the base frame is located on the outdoor side of the second projection surface and includes an indoor side abutment portion,
The indoor side connecting member includes a projection piece and a facing piece, the projection piece abuts against the second facing surface, and a base end side of the facing piece is fixed to the second facing surface in a state in which the base end side is abutted against or adjacent to the indoor side abutted portion,
The tip side of the end piece of the indoor side connecting member is connected to the back portion of the frame portion.
In one embodiment, the indoor side abutted portion is an indoor side facing portion.

In one embodiment, the first projected surface of the base frame and the outdoor side portion of the back portion of the three-sided frame portion face each other with an outdoor side gap therebetween, the base end side of the projected piece and the projected piece of the outdoor side connecting member are located in the outdoor side gap, and an outdoor side watertight means is provided on the outdoor side of the outdoor side gap and located on the outdoor side of the projected piece of the outdoor side connecting member,
The second projected surface of the base frame and the indoor side portion of the back part of the three-sided frame portion face each other with an indoor side gap remaining, the base end sides of the projected piece and the facing piece of the indoor side connecting member are located in the indoor side gap, and an indoor side watertight means is provided on the indoor side of the indoor side gap, located on the indoor side of the projected piece of the indoor side connecting member.

The construction method of the waterproof door frame adopted in this invention is as follows:
A step of removing a door body from an opening frame of an existing door device to obtain a base frame;
a step of fixing a waterproof frame to the base frame by positioning the waterproof frame adjacent to the inside of the base frame;
providing a watertight means in a gap formed between the waterproof frame and the base frame;
It consists of:

In one aspect, the step of obtaining the base frame is a step of removing a door body and a door sill from an existing door device to obtain a base frame which is a three-sided frame consisting of an upper frame and left and right vertical frames,
A step of positioning a three-sided frame portion consisting of the upper frame and the left and right vertical frames of a four-sided frame consisting of an upper frame, left and right vertical frames, and a lower frame so that the three-sided frame portion is adjacent to the inside of the base frame and fixed to the base frame;
A step of placing the lower frame of the four-sided frame on a floor surface;
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 a floor surface includes anchoring the lower frame to a structure within the floor surface.

In one aspect, the base frame includes a projection;
The three-sided frame portion includes a projection portion facing the opening and a back portion located on the opposite side of the projection portion,
The step of fixing the three-sided jamb portion to the base frame includes connecting the back portion of the three-sided jamb portion and the projection portion of the base frame using a connecting member.

In one aspect, the projection portion of the base frame includes a first projection surface on the outdoor side and a second projection surface on the indoor side,
The outdoor side connecting member fixed to the first prospective surface is fixed to the outdoor side portion of the back portion of the three-sided frame portion,
The indoor side connecting member fixed to the second projecting surface is fixed to the indoor side portion of the rear portion of the frame portion.

In one aspect, the projection portion of the base frame is located on the indoor side of the first projection surface and includes an outdoor abutment portion,
The outdoor-side connecting member includes a projection piece and a projection piece, and the projection piece is fixed to the first projection surface with a base end side of the projection piece abutting or being close to the outdoor-side abutted portion,
The tip side of the outer piece of the outdoor connecting member is fixed to the outdoor portion of the back part of the three-sided frame portion.
In one aspect, the projection portion of the base frame is located on the outdoor side of the second projection surface and includes an indoor side abutment portion,
The indoor side connecting member includes a projection piece and a projection piece, and the projection piece is fixed to the second projection surface with a base end side of the projection piece abutting or adjacent to the indoor side abutted portion,
The tip side of the end piece of the indoor side connecting member is fixed to the indoor side portion of the rear portion of the frame portion.

In one embodiment, the first projected surface of the base frame and the outdoor side portion of the back part of the three-sided frame part face each other with an outdoor side gap therebetween, and 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 part of the three-sided frame part,
The second projected surface of the base frame and the indoor side portion of the rear portion of the three-sided frame portion face each other with an indoor side gap therebetween, and the indoor side connecting member is inserted from the indoor side gap and fixed to the second projected surface and the indoor side portion of the rear portion of the three-sided frame portion,
providing an outdoor watertight means located on the outdoor side of the outdoor gap;
An indoor watertight means is provided on the indoor side of the indoor gap.

According to the present invention, it is possible to provide a watertight door frame using an existing frame.
By using the existing frame (leaving the upper and vertical frames of the existing frame and only removing the sill), it is possible to reduce the amount of additional work around the existing frame, and it is also possible to shorten the construction period.

This is a front view of the waterproof door device of this embodiment, seen from the outdoor side. FIG. 2 is a vertical cross-sectional view of the waterproof door device according to the present embodiment. FIG. 2 is a cross-sectional view of the waterproof door device according to the present embodiment. FIG. 3 is a partial enlarged view of the upper frame portion of FIG. 2. FIG. 4 is a partial enlarged view of the door end side vertical frame portion of FIG. 3. FIG. 4 is a partial enlarged view of the door trailing edge side vertical frame portion of FIG. 3 . A cross-sectional view of the door end portion of a waterproof door frame according to another embodiment. FIG. 2 is a vertical cross-sectional view of an existing door frame.

[A] Overall configuration of the waterproof door device Fig. 1 is a front view of the waterproof door according to this embodiment as seen from the outdoor side, Fig. 2 is a vertical cross-sectional view of the waterproof door device according to this embodiment, and Fig. 3 is a horizontal cross-sectional view of the waterproof door device according to this embodiment. Please note that in this specification, the terms outdoor side and indoor side are used not only when they are located on the outdoor side and indoor side across an opening, but also when they are used to specify the relative position of a certain component part. Also, please note that depending on the installation location of the opening where the waterproof door is installed, the terms outdoor side and indoor side are synonymous with the outdoor side and indoor side.

The waterproof door consists of a four-sided waterproof door frame and a door body 1 that opens and closes the waterproof door frame. The waterproof door frame of this embodiment is a door frame formed from a base frame A and a waterproof frame B, with the base frame A attached to the opening and the waterproof frame B located inside the base frame A and fixed to the base frame A.

The base frame A is a three-sided steel frame consisting of an upper frame 2 and left and right vertical frames 3, 4. In this embodiment, the hollows in the upper frame 2 and the left and right vertical frames 3, 4 are filled with a filler (mortar, etc.). The waterproof frame B is a four-sided steel frame consisting of an upper frame 5, left and right vertical frames 6, 7, and a lower frame (sill) 8. The hollows in the upper frame 5, left and right vertical frames 6, 7, and lower frame 8 are filled with mortar M, which is an example of a filler. Note that, as long as the desired strength is ensured, it is not necessary to fill the upper frame 5 and the left and right vertical frames 6, 7 with a filler (mortar, etc.). The three-sided frame portion consisting of the upper frame 5 and the left and right 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 installed on the floor surface FL.

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 leading edge surface 14, and a trailing edge surface 15. The door body 1 is a hinged door whose trailing edge portion is rotatably attached to the trailing edge portion of the waterproof door frame (the trailing edge vertical frame 7 of the waterproof frame) using a hinge H. The waterproof frame B of the waterproof door frame is provided with a watertight member 9 around its four sides, and when the door body 1 is in a closed position, the four peripheral edges (the four peripheral edges of the indoor facing surface 11) or corners of the indoor side portion of the door body 1 are pressed against the watertight member 9. The watertight member 9 is made of an elastic member such as waterproof rubber or elastic resin. The illustrated embodiment shows a single-leaf door device, and this specification will be described based on the door frame of a single-leaf door device, but the door frame of the present invention can also be applied to door frames of door devices with two door bodies, double-leaf doors, or parent-child doors. 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 the left and right vertical frames of the waterproof frame B will be the trailing edge vertical frame of the first door body, and the other vertical frame will be the trailing edge vertical frame of the second door body.

[B] Configuration of the base frame [B-1] Upper frame of the base frame The configuration of the upper frame 2 of the base frame A will be described with reference to Fig. 4. 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 has an outdoor facing surface 20, an indoor facing surface 21, and a projection portion (lower surface portion) extending in the indoor/outdoor direction between the lower ends of the outdoor facing surface 20 and the indoor facing surface 21. The projection portion is made up of an outdoor horizontal surface 22, an indoor horizontal surface 23, and a downward convex portion between the outdoor horizontal surface 22 and the indoor horizontal surface 23, and the downward convex portion is made up of an outdoor facing portion 24, an indoor facing portion 25, and a central horizontal surface 26. An outdoor horizontal edge 27 extending horizontally toward the indoor side is integrally formed at the upper end of the outdoor facing surface 20, and an indoor horizontal edge 28 extending horizontally toward the outdoor side is integrally formed at the upper end of the indoor facing surface 21.

[B-2] The configuration of the door-end side vertical frame 3 of the base frame A will be described with reference to Fig. 5. The door-end side vertical frame 3 of the base frame A is a long member located on the door-end side of the opening and extending in the height direction, and is provided with an outdoor-side visible surface 30, an indoor-side visible surface 31, and a projection portion extending in the indoor/outdoor direction between the inner ends of the outdoor-side visible surface 30 and the indoor-side visible surface 31 in the opening width direction, the projection portion being made up of an outdoor-side visible surface 32, an indoor-side visible surface 33, and a convex portion between the outdoor-side visible surface 32 and the indoor-side visible surface 33, and the convex portion being made up of an outdoor-side visible portion 34, an indoor-side visible portion 35, and a central visible surface 36. An outdoor side prospective edge 37 extending in a prospective direction toward the indoor side is integrally formed at the outer end of the outdoor side prospective surface 30, and an indoor side prospective edge 38 extending in a prospective direction toward the outdoor side is integrally formed at the outer end of the indoor side prospective surface 31.

[B-3] The configuration of the trailing edge side vertical frame 4 of the base frame A will be described with reference to Fig. 6. The trailing edge side vertical frame 4 of the base frame A is a long member located on the trailing edge side of the opening and extending in the height direction, and is provided with an outdoor facing surface 40, an indoor facing surface 41, and a projection portion extending in the indoor/outdoor direction between the inner ends of the outdoor facing surface 40 and the indoor facing surface 41 in the opening width direction, the projection portion being made up of an outdoor facing surface 42, an indoor facing surface 43, and a convex portion between the outdoor facing surface 42 and the indoor facing surface 43, the convex portion being made up of an outdoor facing portion 44, an indoor facing portion 45, and a central projection surface 46. An outdoor side prospective edge 47 extending in a prospective direction toward the indoor side is integrally formed at the outer end of the outdoor side prospective surface 40, and an indoor side prospective edge 48 extending in a prospective direction toward the outdoor side is integrally formed at the outer end of the indoor side prospective surface 41.

[C] Mounting structure of base frame As shown in Fig. 2 and Fig. 4, in the upper frame 2 of the base frame A, a plurality of connecting pieces 29 are fixed at intervals in the width direction between the outdoor horizontal edge 27 and the indoor horizontal edge 28, and the upper frame 2 is fixed to the framework C via the connecting pieces 29. The gap between the upper frame 2 and the framework C is filled with mortar M, which is exemplified as a filler, and a sealing material S' is provided as a watertight means in the gap between the outdoor horizontal edge 27 and the framework C on the outdoor side of the filled mortar M, and a sealing material S' is provided as a watertight means in the gap between the indoor horizontal edge 28 and the framework C on the indoor side of the filled mortar M. Note that the sealing material S' on the indoor side is not required.

As shown in Figures 3 and 5, in the door-end vertical frame 3 of the base frame A, a number of connecting pieces 39 are fixed at intervals in the height direction between the outdoor-side projected edge 37 and the indoor-side projected edge 38, and the door-end vertical frame 3 is fixed to the structure C via the connecting pieces 39. The gap between the door-end vertical frame 3 and the structure C is filled with mortar M, which is an example of a filler, and a sealing material S' is provided as a watertight means in the gap between the outdoor-side projected edge 37 and the structure C on the outdoor side of the filled mortar M, and a sealing material S' is provided as a watertight means in the gap between the indoor-side projected edge 38 and the structure C on the indoor side of the filled mortar M. A sealing material S'' is further provided on the outdoor side of the outdoor sealing material S'. Note that the indoor sealing material S' does not need to be provided.

As shown in Figures 3 and 6, in the tail end vertical frame 4 of the base frame A, a number of connecting pieces 49 are fixed between the outdoor side projected edge 47 and the indoor side projected edge 48 at intervals in the height direction, and the tail end vertical frame 4 is fixed to the structure C via the connecting pieces 49. The gap between the tail end vertical frame 4 and the structure C is filled with mortar M, which is an example of a filler, and a sealing material S' is provided as a watertight means in the gap between the outdoor side projected edge 47 and the structure C on the outdoor side of the filled mortar M, and a sealing material S' is provided as a watertight means in the gap between the indoor side projected edge 48 and the structure C on the indoor side of the filled mortar M. A sealing material S'' is further provided on the outdoor side of the outdoor sealing material S'. Note that the indoor sealing material S' does not need to be provided.

In this embodiment, the upper frame 2, the leading edge vertical frame 3, and the trailing edge vertical frame 4 of the base frame A have the same projected dimensions, and when the base frame A is attached to the opening, the exterior facing surfaces 20, 30, and 40 are flush, and the interior facing surfaces 21, 31, and 41 are flush. The base frame A in this embodiment is a three-sided frame, and does not have a bottom frame or footsill that connects the lower end portions of the leading edge vertical frame 3 and the trailing edge vertical frame 4.

[D] Structure of the waterproof frame [D-1] Upper frame of the waterproof frame The structure of the upper frame 5 of the waterproof frame B will be described with reference to Fig. 4. The upper frame 5 of the waterproof frame B is a long member located above the opening and extending in the opening width direction, and includes an outdoor facing surface 50, an indoor facing surface 51 with a height dimension larger than the outdoor facing surface 50 (not limited to this, and may be the same height dimension, for example), and a projection portion (lower surface portion) extending in the indoor/outdoor direction between the lower ends of the outdoor facing surface 50 and the indoor facing surface 51. The projection portion includes an outdoor lower surface 52 extending horizontally from the lower end of the outdoor facing surface 50 toward the indoor side, an indoor lower surface 53 located below the outdoor lower surface 52 and extending horizontally from the lower end of the indoor facing surface 51 toward the outdoor side, and a groove portion 54 formed in 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 toward the outdoor side.

An outdoor horizontal edge 55 that extends horizontally toward the indoor side is integrally formed at the upper end of the outdoor facing surface 50, and an indoor horizontal edge 56 that extends horizontally toward the outdoor side is integrally formed at the upper end of the indoor facing surface 51, and multiple connecting pieces 57 are fixed between the outdoor horizontal edge 55 and the indoor horizontal edge 56 at intervals in the opening width direction.

[D-2] Vertical frame on the door end side of the waterproof frame With reference to Figure 5, the configuration of the vertical frame 6 on the door end side of the waterproof frame B will be explained. The door-end side vertical frame 6 of the waterproof frame B is a long member located on the door-end side of the opening and extending in the opening height direction, and is provided with an outdoor-side visible surface 60, an indoor-side visible surface 61 having a larger visible dimension than the outdoor-side visible surface 60 (not limited to this, and for example it may be the same visible dimension), and a projection portion extending in the indoor-outdoor direction between the inner ends of the outdoor-side visible surface 60 and the indoor-side visible surface 61. The projection portion consists of an outdoor-side visible surface 62 extending in the projection direction from the inner end of the outdoor-side visible surface 60 toward the indoor side, an indoor-side visible surface 63 located inward of the outdoor-side visible surface 62 and extending in the projection direction from the inner end of the indoor-side visible surface 61 toward the outdoor side, and a groove portion 64 formed in the step between the indoor-side end of the outdoor-side visible surface 62 and the outdoor-side end of the indoor-side visible surface 63, and opening toward the outdoor side.

An outdoor-side prospective edge 65 that extends in the prospective direction toward the indoor side is integrally formed at the outer end of the outdoor-side prospective surface 60, and an indoor-side prospective edge 66 that extends in the prospective direction toward the outdoor side is integrally formed at the outer end of the indoor-side prospective surface 61, and multiple connecting pieces 67 are fixed between the outdoor-side prospective edge 65 and the indoor-side prospective edge 66 at intervals in the opening height direction.

[D-3] Trailing Edge Vertical Frame of Waterproof Frame With reference to FIG. 6, the structure of the trailing edge vertical frame 7 of the waterproof frame B will be described. The trailing edge vertical frame 7 of the waterproof frame B is a long member located on the trailing edge of the opening and extending in the opening height direction, and comprises an outdoor facing surface 70, an indoor facing surface 71 having a larger facing dimension than the outdoor facing surface 70 (not limited to this, and for example it may be the same facing dimension), and a projection portion extending in the indoor/outdoor direction between the inner ends of the outdoor facing surface 70 and the indoor facing surface 71. The projection portion comprises an outdoor facing surface 72 extending in the facing direction from the inner end of the outdoor facing surface 70 toward the indoor side, an indoor facing surface 73 located inward of the outdoor facing surface 72 and extending in the facing direction from the inner end of the indoor facing surface 71 toward the outdoor side, and a groove portion 74 formed in the step between the indoor side end of the outdoor facing surface 72 and the outdoor side end of the indoor facing surface 73, and opening toward the outdoor side.

An outdoor-side prospective edge 75 that extends in the prospective direction toward the indoor side is integrally formed at the outer end of the outdoor-side prospective surface 70, and an indoor-side prospective edge 76 that extends in the prospective direction toward the outdoor side is integrally formed at the outer end of the indoor-side prospective surface 71, and multiple connecting pieces 77 are fixed between the outdoor-side prospective edge 75 and the indoor-side prospective edge 76 at intervals in the opening height direction.

[D-4] Bottom frame of waterproof frame The configuration of the bottom frame 8 of the waterproof frame B will be described with reference to Fig. 2. The bottom frame 8 of the waterproof frame B is a long member located below the opening and extending in the opening width direction, and has an outdoor facing surface 80, an indoor facing surface 81, and a projection portion (upper surface portion) extending in the indoor/outdoor direction between the upper ends of the outdoor facing surface 80 and the indoor facing surface 81, and the projection portion is made up of an outdoor upper surface 82, an indoor upper surface 83, and a groove portion 84 formed in the step portion between the indoor end of the outdoor upper surface 82 and the outdoor end of the indoor upper surface 83, and opening toward the outdoor side. The outdoor upper surface 82 extends horizontally from the upper end of the outdoor facing surface 80 toward the indoor side, and the indoor upper surface 83 consists of an inclined portion 830 that extends at an upward angle from the upper end of the indoor facing surface 81 toward the outdoor side, and a horizontal portion 831 that extends horizontally from the outdoor side tip of the inclined portion 830 toward the outdoor side.

An outdoor horizontal edge 85 extending horizontally toward the indoor side is integrally formed at the lower end of the outdoor facing surface 80, and an indoor horizontal edge 86 extending horizontally toward the outdoor side is integrally formed at the lower end of the indoor facing surface 81, and a number of connecting pieces 87 are fixed between the outdoor horizontal edge 85 and the indoor horizontal edge 86 at intervals in the opening width direction. The internal space of the lower frame 8 is filled with mortar M, which is exemplified as a filler material. The shape and fit of the lower frame 8 are not limited to the manner shown in the figure.

[D-5] Overall configuration of waterproof frame The waterproof frame B is prepared as a four-sided frame consisting of an upper frame 5, a leading edge vertical frame 6, a trailing edge vertical frame 7, and a lower frame 8. The upper frame 5, leading edge vertical frame 6, trailing edge vertical frame 7, and lower frame 8 of the waterproof frame B have the same projected dimensions, and the outdoor facing surfaces 50, 60, 70, and 80 are approximately flush (in the illustrated embodiment, the outdoor facing surface 80 is slightly recessed), and the indoor facing surfaces 51, 61, 71, and 81 are approximately flush (in the illustrated embodiment, the indoor facing surface 81 is slightly recessed). The upper frame 5, leading edge vertical frame 6, trailing edge vertical frame 7, and lower frame 8 of the waterproof frame B are joined (typically welded) to form the waterproof frame, and the joints are waterproofed. The waterproofing treatment should be applied at least to the joint between the lower end of the leading edge vertical frame 6 and the bottom frame 8, and the joint between the lower end of the trailing edge vertical frame 7 and the bottom frame 8. The grooves 54, 64, 74, 84 that open toward the outdoors are continuous all around, and the watertight member 9 is fitted all around.

In this embodiment, the projected dimensions of the base frame A and the waterproof frame B are the same, and in a waterproof door frame consisting of the base frame A and the waterproof frame B, the outdoor facing surfaces 20, 30, 40 of the upper frame 2, the leading vertical frame 3, and the trailing vertical frame 4 of the base frame A are approximately flush with the outdoor facing surfaces 50, 60, 70, 80 of the upper frame 5, the leading vertical frame 6, the trailing vertical frame 7, and the lower frame 8 of the waterproof frame B, and the indoor facing surfaces 21, 31, 41 of the upper frame 2, the leading vertical frame 3, and the trailing vertical frame 4 of the base frame A are approximately flush with the indoor facing surfaces 51, 61, 71, 81 of the waterproof frame B.

[E] Waterproof frame mounting structure The three-sided frame portion consisting of the upper frame 5 and the left and right vertical frames 6, 7 of the waterproof frame B is located adjacent to the inside of the base frame A and fixed to the base frame A, and the lower frame 8 of the waterproof frame B is installed on the floor surface FL, and a sealant S is provided as a watertight means in the gap formed between the three-sided frame portion of the waterproof frame B and the base frame A. The three-sided frame portion of the waterproof frame B (upper frame 5, left and right vertical frames 6, 7) has a projection portion facing the opening and a back portion located on the opposite side of the projection portion, and the back portion of the three-sided frame portion of the waterproof frame B and the projection portion of the base frame A are connected by a connecting means (outdoor side connecting member 16, indoor side connecting member 17), and a sealant S is provided as a watertight means in the gap formed between the back portion of the three-sided frame portion of the waterproof frame B and the projection portion of the base frame A. The mounting structure of the waterproof frame will be described in more detail below.

[E-1] Installation structure of the upper frame of the waterproof frame As shown in Figures 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 surface 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 surface 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.

The outdoor connecting member 16 is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 160 and a facing piece 161, the projection piece 160 is fixed in a horizontal position to the outdoor horizontal surface 22, the facing piece 161 hanging down from the indoor end of the projection piece 160 abuts (or may be close to) the outdoor facing part 24 of the downward convexity of the projection part (lower surface part) of the upper frame 2, and the tip part of the facing piece 161 extends downward beyond the central horizontal surface 26 of the downward convexity. The abutment part between the facing piece 161 of the outdoor connecting member 16 and the outdoor facing part 24 may or may not be fixed.

The indoor side connecting member 17 is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 170 and a facing piece 171. The projection piece 170 is fixed to the indoor side horizontal surface 23 in a horizontal position, and the facing piece 171 hanging down from the outdoor side end of the projection piece 170 abuts against the indoor side facing portion 25 of the downward convex portion of the projection part (lower surface portion) of the upper frame 2, and the tip side portion of the facing piece 171 extends downward beyond the central horizontal surface 26 of the downward convex portion. The abutment portion between the facing piece 171 of the indoor side connecting member 17 and the indoor side facing portion 25 may or may not be fixed.

On the back side (upper portion) opposite the projection portion (lower portion) of the upper frame 5 of the waterproof frame B, there are an outdoor horizontal edge 55, an indoor horizontal edge 56, and multiple connecting pieces 57 spaced apart in the opening width direction between the outdoor horizontal edge 55 and the indoor horizontal edge 56. The visible piece 161 of the outdoor connecting member 16 is fixed to the outdoor portion of the connecting piece 57, and the visible piece 171 of the indoor connecting member 17 is fixed to the indoor portion of the connecting piece 57.

When the three-sided frame part consisting 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 upper frame 5 of the waterproof frame B is positioned adjacent to the underside of the upper frame 2 of the base frame A, the outdoor side horizontal surface 22 of the upper frame 2 and the outdoor side part of the back part of the upper frame 5 (including the outdoor side horizontal edge 55 of the upper frame 5 and the outdoor side part of the connecting piece 57) face each other at a distance, forming an outdoor side gap, the indoor side horizontal surface 23 of the upper frame 2 and the indoor side part of the back part of the upper frame 5 (including the indoor side horizontal edge 56 of the upper frame 5 and the indoor side part of the connecting piece 57) face each other at a distance, forming an indoor side gap, and the central horizontal surface 26 of the downward convex part of the upper frame 2 and the central part of the back part of the upper frame 5 (including the central part of the connecting piece 57) face each other closely or at a distance, forming a central gap. In this embodiment, the outdoor gap and the indoor gap are connected via a central gap, and one gap is formed between the projection (lower surface) of the upper frame 2 and the rear surface of the upper frame 5 in the indoor-outdoor direction.

The tip portions of the facing piece 161 of the outdoor connecting member 16 and the facing piece 171 of the indoor connecting member 17 extend downward beyond the connecting piece 57, with the facing piece 161 of the outdoor connecting member 16 being fixed (typically welded) to the outdoor portion of the connecting piece 57, and the facing piece 171 of the indoor connecting member 17 being fixed (typically welded) to the indoor portion of the connecting piece 57. In this embodiment, the outdoor side connecting member 16 and the indoor side connecting member 17 are prepared as a plurality of short members, each of which is provided at intervals in the opening width direction at a position corresponding to the connecting piece 57 provided at intervals in the opening width direction, the projection piece 160 of each outdoor side connecting member 16 is fixed (typically welded) to the outdoor side horizontal surface 22 of the upper frame 2, the facing piece 161 is fixed (typically welded) to the outdoor side portion of the connecting piece 57, the projection piece 170 of each indoor side connecting member 17 is fixed (typically welded) to the indoor side horizontal surface 23 of the upper frame 2, and the facing piece 171 is fixed (typically welded) to the indoor side portion of the connecting piece 57. 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 width direction) of the upper frame 2 and the upper frame 5 (as long as they are long enough to be inserted and fixed in the outdoor side gap and the indoor side gap), and the length dimension and number are not limited.

The outdoor gap between the outdoor horizontal surface 22 of the upper frame 2 and the outdoor portion of the back of the upper frame 5 is filled with mortar M, which is an example of a filler, and a sealing material S is provided as a watertight means between the outdoor horizontal surface 22 of the upper frame 2 and the outdoor horizontal edge 55 of the upper frame 5, located on the outdoor side of the mortar M. The outdoor visible surface 20 of the upper frame 2 of the base frame A and the outdoor visible surface 50 of the upper frame 5 of the waterproof frame B are flush with each other.

The indoor gap between the indoor horizontal surface 23 of the upper frame 2 and the indoor side part of the back of the upper frame 5 is filled with mortar M, which is an example of a filler, and a sealing material S is provided as a watertight means between the indoor horizontal surface 23 of the upper frame 2 and the indoor horizontal edge 56 of the upper frame 5, located on the indoor side of the mortar M. Note that the indoor sealing material S does not have to be provided. The indoor facing surface 21 of the upper frame 2 of the base frame A and the indoor facing surface 51 of the upper frame 5 of the waterproof frame B are flush with each other. Note that in this embodiment, the outdoor gap and the indoor gap are connected via a central gap, so the central gap is also filled with mortar M, which is an example of a filler.

[E-2] Mounting structure of leading edge vertical frame of waterproof frame As shown in Figures 3 and 5, the leading edge vertical frame 6 of waterproof frame B is fixed to the leading edge vertical frame 3 of base frame A. An outdoor connecting member 16 is fixed to the outdoor facing surface 32 of the leading edge vertical frame 3 of base frame A, and an indoor connecting member 17 is fixed to the indoor facing surface 33. The outdoor connecting member 16 is fixed to the outdoor side part of the back part of the leading edge vertical frame 6 of waterproof frame B, and the indoor connecting member 17 is fixed to the indoor side part of the back part of the leading edge vertical frame 6 of waterproof frame B.

The outdoor connecting member 16 is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 160 and a facing piece 161. The projection piece 160 is fixed to the outdoor facing surface 32 with the projection piece 160 extending in the facing direction, and the facing piece 161 extending inward from the indoor end of the projection piece 160 abuts (or may be close to) the outdoor facing portion 34 of the protruding portion of the facing portion of the door end vertical frame 3, and the tip portion of the facing piece 161 extends inward beyond the central facing surface 36 of the protruding portion. The abutment portion between the facing piece 161 of the outdoor connecting member 16 and the outdoor facing portion 34 may or may not be fixed.

The indoor side connecting member 17 is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 170 and a facing piece 171. The projection piece 170 is fixed to the indoor side facing surface 33 with the projection piece 170 extending in the facing direction, and the facing piece 171 extending inward from the outdoor end of the projection piece 170 in the facing direction abuts against the indoor side facing portion 35 of the protruding portion of the facing portion of the door end vertical frame 3, and the tip side portion of the facing piece 171 extends inward beyond the central horizontal plane 36 of the protruding portion. The abutment portion between the facing piece 171 of the indoor side connecting member 17 and the indoor side facing portion 35 may or may not be fixed.

On the back side of the waterproof frame B opposite the projected portion of the door-end vertical frame 6, there are an outdoor projected edge 65, an indoor projected edge 66, and multiple connecting pieces 67 spaced apart in the opening height direction between the outdoor projected edge 65 and the indoor projected edge 66. The visible piece 161 of the outdoor connecting member 16 is fixed to the outdoor side portion of the connecting piece 67, and the visible piece 171 of the indoor connecting member 17 is fixed to the indoor side portion of the connecting piece 67.

When the three-sided frame part consisting 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 front-side vertical frame 6 of the waterproof frame B is positioned adjacent to the inside of the front-side vertical frame 3 of the base frame A, the outdoor-side projected surface 32 of the front-side vertical frame 3 and the outdoor-side part of the back part of the front-side vertical frame 6 (including the outdoor-side projected edge 65 of the front-side vertical frame 6 and the outdoor-side part of the connecting piece 67) face each other at a distance to form an outdoor-side gap, the indoor-side projected surface 33 of the front-side vertical frame 3 and the indoor-side part of the back part of the front-side vertical frame 6 (including the indoor-side projected edge 66 of the front-side vertical frame 6 and the indoor-side part of the connecting piece 67) face each other at a distance to form an indoor-side gap, and the central projected surface 36 of the convex part of the front-side vertical frame 3 and the central part of the back part of the front-side vertical frame 6 (including the central part of the connecting piece 67) face each other closely or at a distance to form a central gap. In this embodiment, the outdoor gap and the indoor gap are connected via a central gap, and one gap is formed between the projection part of the leading edge vertical frame 3 and the back part of the leading edge vertical frame 6 in the indoor-outdoor direction.

The tip portions of the facing piece 161 of the outdoor connecting member 16 and the facing piece 171 of the indoor connecting member 17 extend inward beyond the connecting piece 67, with the facing piece 161 of the outdoor connecting member 16 being fixed (typically welded) to the outdoor portion of the connecting piece 67, and the facing piece 171 of the indoor connecting member 17 being fixed (typically welded) to the indoor portion of the connecting piece 67. In this embodiment, the outdoor side connecting member 16 and the indoor side connecting member 17 are prepared as multiple short members, and each is provided with multiple pieces spaced apart in the opening width direction at positions corresponding to the connecting pieces 67 provided with spaces in the opening height direction, and the projection piece 160 of each outdoor side connecting member 16 is fixed (typically welded) to the outdoor side projection surface 32 of the door end vertical frame 3, the sight piece 161 is fixed (typically welded) to the outdoor side portion of the connecting piece 67, the projection piece 170 of each indoor side connecting member 17 is fixed (typically welded) to the indoor side projection surface 33 of the door end vertical frame 3, and the sight piece 171 is fixed (typically welded) to the indoor side portion of the connecting piece 67. The outdoor connecting member 16 and the indoor connecting member 17 can be short members or long members that extend in the length direction (opening height direction) of the door end vertical frame 3 and the door end vertical frame 6 (as long as they are long enough to be inserted and fixed into the outdoor gap and the indoor gap), and there are no restrictions on the length dimension or number.

The outdoor gap between the outdoor facing surface 32 of the leading vertical frame 3 and the outdoor part of the back of the leading vertical frame 6 is filled with mortar M, which is an example of a filler, and a sealing material S is provided as a watertight means between the outdoor facing surface 32 of the leading vertical frame 3 and the outdoor facing edge 65 of the leading vertical frame 6, located on the outdoor side of the mortar M. The outdoor facing surface 30 of the leading vertical frame 3 of the base frame A and the outdoor facing surface 60 of the leading vertical frame 6 of the waterproof frame B are flush with each other.

The indoor gap between the indoor side projection surface 33 of the leading vertical frame 3 and the indoor side part of the back side of the leading vertical frame 6 is filled with mortar M, which is an example of a filler. Located on the indoor side of the mortar M, a sealing material S is provided as a watertight means between the indoor side projection surface 33 of the leading vertical frame 3 and the indoor side projection edge 66 of the leading vertical frame 6. Note that the indoor sealing material S does not need to be provided. The indoor side projection surface 31 of the leading vertical frame 3 of the base frame A and the indoor side projection surface 61 of the leading vertical frame 6 of the waterproof frame B are flush with each other. Note that in this embodiment, the outdoor side gap and the indoor side gap are connected via a central gap, so the central gap is also filled with mortar M, which is an example of a filler.

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

[E-3] Mounting structure of trailing edge vertical frame of waterproof frame As shown in Figures 3 and 6, the trailing edge vertical frame 7 of waterproof frame B is fixed to the trailing edge vertical frame 4 of base frame A. An outdoor connecting member 16 is fixed to the outdoor facing surface 42 of the trailing edge vertical frame 4 of base frame A, and an indoor connecting member 17 is fixed to the indoor facing surface 43. The outdoor connecting member 16 is fixed to the outdoor side part of the back part of the trailing edge vertical frame 7 of waterproof frame B, and the indoor connecting member 17 is fixed to the indoor side part of the back part of the trailing edge vertical frame 7 of waterproof frame B.

The outdoor connecting member 16 is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 160 and a facing piece 161. The projection piece 160 is fixed to the outdoor facing surface 32 with the projection piece 160 extending in the facing direction. The facing piece 161, which extends inward from the indoor end of the projection piece 160 in the facing direction, abuts (or may be close to) the outdoor facing portion 44 of the protruding portion of the facing portion of the end-of-door vertical frame 4, and the tip portion of the facing piece 161 extends inward beyond the central facing surface 46 of the protruding portion. The abutment portion between the facing piece 161 of the outdoor connecting member 16 and the outdoor facing portion 44 may or may not be fixed.

The indoor side connecting member 17 is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 170 and a facing piece 171. The projection piece 170 is fixed to the indoor side facing surface 43 with the projection piece 170 extending in the facing direction, and the facing piece 171 extending inward from the outdoor end of the projection piece 170 in the facing direction abuts against the indoor side facing portion 45 of the convex portion of the facing portion of the end-of-door vertical frame 4, and the tip side portion of the facing piece 171 extends inward beyond the central facing surface 46 of the convex portion. The abutment portion between the facing piece 171 of the indoor side connecting member 17 and the indoor side facing portion 45 may or may not be fixed.

On the back side of the waterproof frame B opposite the projected portion of the door end side vertical frame 7, there are located an outdoor projected edge 75, an indoor projected edge 76, and multiple connecting pieces 77 spaced apart in the opening height direction between the outdoor projected edge 75 and the indoor projected edge 76. The visible piece 161 of the outdoor connecting member 16 is fixed to the outdoor side portion of the connecting piece 77, and the visible piece 171 of the indoor connecting member 17 is fixed to the indoor side portion of the connecting piece 77.

When the three-sided frame part consisting 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 trailing edge vertical frame 7 of the waterproof frame B is positioned adjacent to the inside of the trailing edge vertical frame 4 of the base frame A, the outdoor side projected surface 42 of the trailing edge vertical frame 4 and the outdoor side part of the back part of the trailing edge vertical frame 7 (including the outdoor side projected edge 75 of the trailing edge vertical frame 7 and the outdoor side part of the connecting piece 77) face each other at a distance to form an outdoor side gap, the indoor side projected surface 43 of the trailing edge vertical frame 4 and the indoor side part of the back part of the trailing edge vertical frame 7 (including the indoor side projected edge 76 of the trailing edge vertical frame 7 and the indoor side part of the connecting piece 77) face each other at a distance to form an indoor side gap, and the central projected surface 46 of the convex part of the trailing edge vertical frame 4 and the central part of the back part of the trailing edge vertical frame 7 (including the central part of the connecting piece 77) are close to or face each other at a distance to form a central gap. In this embodiment, the outdoor gap and the indoor gap are connected via a central gap, and one gap is formed between the projection part of the end-of-door vertical frame 4 and the back part of the end-of-door vertical frame 7 in the indoor-outdoor direction.

The tip portions of the facing piece 161 of the outdoor connecting member 16 and the facing piece 171 of the indoor connecting member 17 extend inward beyond the connecting piece 77, with the facing piece 161 of the outdoor connecting member 16 being fixed (typically welded) to the outdoor portion of the connecting piece 77, and the facing piece 171 of the indoor connecting member 17 being fixed (typically welded) to the indoor portion of the connecting piece 77. In this embodiment, the outdoor side connecting member 16 and the indoor side connecting member 17 are prepared as multiple short members, and each is provided with multiple pieces spaced apart in the opening width direction at positions corresponding to the connecting pieces 77 provided with spaces in the opening height direction, and the projection piece 160 of each outdoor side connecting member 16 is fixed (typically welded) to the outdoor side projection surface 42 of the trailing edge vertical frame 4, the sight piece 161 is fixed (typically welded) to the outdoor side portion of the connecting piece 77, the projection piece 170 of each indoor side connecting member 17 is fixed (typically welded) to the indoor side projection surface 43 of the trailing edge vertical frame 4, and the sight piece 171 is fixed (typically welded) to the indoor side portion of the connecting piece 77. The outdoor connecting member 16 and the indoor connecting member 17 can be short members or long members that extend in the length direction (opening height direction) of the trailing edge vertical frame 4 and trailing edge vertical frame 7 (as long as they are long enough to be inserted and fixed into the outdoor gap and indoor gap), and there are no restrictions on the length or number.

The outdoor gap between the outdoor projected surface 42 of the trailing edge vertical frame 4 and the outdoor part of the rear part of the trailing edge vertical frame 7 is filled with mortar M, which is an example of a filler, and a sealing material S is provided as an outdoor watertight means between the outdoor projected surface 42 of the trailing edge vertical frame 4 and the outdoor projected edge 75 of the trailing edge vertical frame 7, located on the outdoor side of the mortar M. The outdoor projected surface 40 of the trailing edge vertical frame 4 of the base frame A and the outdoor projected surface 70 of the trailing edge vertical frame 7 of the waterproof frame B are flush with each other.

The indoor gap between the indoor side projected surface 43 of the tail end vertical frame 4 and the indoor side part of the rear part of the tail end vertical frame 7 is filled with mortar M, which is an example of a filler, and a sealing material S is provided as an indoor watertight means between the indoor side projected surface 43 of the tail end vertical frame 4 and the indoor side projected edge 76 of the tail end vertical frame 7, located on the indoor side of the mortar M. Note that the indoor sealing material S does not need to be provided. The indoor side visible surface 41 of the tail end vertical frame 4 of the base frame A and the indoor side visible surface 71 of the tail end vertical frame 7 of the waterproof frame B are flush with each other. Note that in this embodiment, the outdoor side gap and the indoor side gap are connected via the central gap, so the central gap is also filled with mortar M, which is an example of a filler.

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

[E-4] Installation structure of the bottom frame of the waterproof frame As shown in Fig. 2, the bottom frame 8 of the waterproof frame B is anchored to the structure C via the lower connecting piece 87. The gap between the bottom frame 8 and the structure C within the floor surface FL is filled with mortar M, which is exemplified as a filler, and in this embodiment, most of the outdoor facing surface 80 and the indoor facing surface 81 of the bottom frame 8 are located within the floor surface FL. A sealing material S, exemplified as a watertight means, is provided between the upper end portion of the outdoor facing surface 80 of the bottom frame 8 and the outdoor floor surface FL.

[E-5] Installation structure of waterproof frame for base frame having different shape The shape of the base frame A is not limited to the embodiment shown in Figures 2 to 6. Another shape of the base frame A is shown in Figure 7. As shown in Figure 7, the door-end side vertical frame 3a of the base frame A is a long member located on the door-end side of the opening and extending in the opening height direction, and is provided with an outdoor-side visible surface 30a, an indoor-side visible surface 31a having a larger visible dimension than the outdoor-side visible surface 30a (not limited to this, it may have the same visible dimension), and a projection portion extending in the indoor/outdoor direction between the inner ends of the outdoor-side visible surface 30a and the indoor-side visible surface 31a. The projection portion comprises an outdoor-side visible surface 32a extending in the projection direction from the inner end of the outdoor-side visible surface 30a toward the indoor side, an indoor-side visible surface 33a located inward of the outdoor-side visible surface 32a and extending in the projection direction from the inner end of the indoor-side visible surface 31a toward the outdoor side, and a groove portion 34a formed in the step portion between the indoor-side end of the outdoor-side visible surface 32a and the outdoor-side end of the indoor-side visible surface 33a, and opening toward the outdoor side. The shape of the door-end vertical frame 6 of the waterproof frame B is the same as that shown in Figures 3 and 5, and the above-mentioned description can be used.

An outdoor connecting member 16a is fixed to the outdoor facing surface 32a of the leading edge vertical frame 3a of the base frame A, and an indoor connecting member 17a is fixed to the indoor facing surface 33a. The outdoor connecting member 16a is connected to the outdoor side of the rear part of the leading edge vertical frame 6 of the waterproof frame B, and the indoor connecting member 17a is connected to the indoor side of the rear part of the leading edge vertical frame 6 of the waterproof frame B.

The outdoor connecting member 16a is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 160a and a facing piece 161a. The projection piece 160a is fixed to the outdoor facing surface 32a with the projection piece 160a extending in the facing direction. The facing piece 161a, which extends inward from the indoor end of the projection piece 160a in the facing direction, abuts the tip 330a of the outdoor protruding piece of the indoor facing surface 33a of the door end vertical frame 3a. The tip portion of the facing piece 161a extends inward and is fixed to the outdoor portion of the connecting piece 67.

The indoor side connecting member 17a is an anchor material (reinforced concrete bar or angle bar) with an L-shaped cross section consisting of a projection piece 170a and a facing piece 171a. The projection piece 170a is fixed to the indoor side facing surface 33a with the projection piece 170a extending in the facing direction, and the tip portion of the facing piece 171a extends inward and is fixed to the indoor side portion of the connecting piece 67.

When the three-sided frame part consisting 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 front-side vertical frame 6 of the waterproof frame B is positioned adjacent to the inside of the front-side vertical frame 3a of the base frame A, the outdoor-side projected surface 32a of the front-side vertical frame 3a and the outdoor-side part of the back part of the front-side vertical frame 6 (including the outdoor-side projected edge 65 of the front-side vertical frame 6 and the outdoor-side part of the connecting piece 67) face each other at a distance to form an outdoor-side gap, and the indoor-side projected surface 33a of the front-side vertical frame 3a and the indoor-side part of the back part of the front-side vertical frame 6 (including the indoor-side projected edge 66 of the front-side vertical frame 6 and the indoor-side part of the connecting piece 67) face each other at a distance to form an indoor-side gap, the outdoor-side gap and the indoor-side gap are connected, and one gap is formed in the indoor-outdoor direction between the projected part of the front-side vertical frame 3a and the back part of the front-side vertical frame 6.

The gap between the front end vertical frame 3a's projected portion (outdoor projected surface 32a, indoor projected surface 33a) and the rear surface of the front end vertical frame 6 is filled with mortar M, which is an example of a filler. Located on the outdoor side of the mortar M, a sealing material S is provided between the outdoor projected surface 32a of the front end vertical frame 3a and the outdoor projected edge 65 of the front end vertical frame 6 as an outdoor watertight means. Located on the indoor side of the mortar M, a sealing material S is provided between the indoor projected surface 33a of the front end vertical frame 3a and the indoor projected edge 66 of the front end vertical frame 6 as an indoor watertight means. Note that the indoor sealing material S does not need to be provided. Although the front end vertical frame 3a has been described as a representative of other shapes of the base frame A, the upper frame and the tail end vertical frame also have similar shapes.

[F] Waterproof Door Frame Construction Method The waterproof door frame according to this embodiment can be obtained by renovating an existing door device. Fig. 8 is a vertical cross-sectional view illustrating the door frame of an existing door device. The base frame A according to this 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 consisting of an upper frame 2, a door end side vertical frame 3, a door end side vertical frame 4, and a lower frame (footsill) 8', and the base frame A according to this embodiment can be obtained by removing the lower frame (footsill) 8' from the existing door frame.

That is, the construction method of the waterproof door frame according to this embodiment is as follows:
(1) A first step of removing a door body and a door sill 8' from an existing door device to obtain a base frame A, which is a frame on three sides consisting of an upper frame 2 and left and right vertical frames 3 and 4;
(2) a second step of positioning the three-sided frame portion of the waterproof frame B, which is made up 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 and fixing it to 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 a watertight means in the gap formed between the waterproof frame B and the base frame A;
The order of the second step and the third step does not matter, and the second step and the third step may be carried out substantially simultaneously.

In the first step, the step of removing the shoe sill 8' is, in one embodiment, a step of removing the entire shoe sill 8', but it may also be a step of removing a portion of the shoe sill 8' (for example, removing only both ends in the opening width direction). It will be understood by those skilled in the art that the step of removing the shoe sill 8' may include a chipping operation of the floor surface FL.

In the second and third steps, a four-sided waterproof frame B is prepared by joining (typically welding) 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. At least the joint between the lower end of the leading edge vertical frame 6 and the lower frame 8, and the joint between the lower end of the trailing edge vertical frame 7 and the lower frame 8 are waterproofed. The waterproof frame B is assembled in a factory and transported to the site as the waterproof frame B. The outdoor side connecting member 16 and the indoor side connecting member 17 are attached on site (typically by welding).

In the second step, the process of fixing the three-sided frame part consisting of the upper frame 5 and the left and right vertical frames 6, 7 of the waterproof frame B to the base frame A includes positioning the back part of the three-sided frame part of the waterproof frame B inside the projection part of the base frame A with a gap, connecting the outdoor side part of the projection part of the base frame A to the outdoor side part of the back part of the three-sided frame part of the waterproof frame B with the outdoor side connecting member 16, and connecting the indoor side part of the projection part of the base frame A to the indoor side part of the back part of the three-sided frame part of the waterproof frame B with the indoor side connecting member 17. The second step will be described in more detail below.

The outdoor side connecting member 16 is inserted from the outdoor side into the outdoor side gap formed between the outdoor side portion of the projection part of the base frame A (the outdoor side horizontal surface 22, the outdoor side projection surface 32, the outdoor side projection surface 42) and the outdoor side portion of the back part of the three-sided frame part of the waterproof frame B in a first position (L-shaped in plan view for the upper gap, and L-shaped in side view for the side gap), and the outdoor side connecting member 16 inserted into the outdoor side gap in the first position is rotated within the outdoor side gap to assume a second position (upper the gap is L-shaped in side view, and the gap on the side is L-shaped in plan view), the projection piece 160 of the outdoor connecting member 16 is fixed (typically by welding from the outdoor side) to the outdoor side portion of the projection part of the base frame A (the outdoor horizontal surface 22, the outdoor projection surface 32, and the outdoor projection surface 42), and the projection piece 161 of the outdoor connecting member 16 is fixed (typically by welding from the outdoor side) to the outdoor side portion of the back part of the waterproof frame B (the outdoor side portions of the connecting pieces 57, 67, and 77).

The indoor side connecting member 17 is inserted from the indoor side into the indoor side gap formed between the indoor side portion of the projection part of the base frame A (indoor side horizontal surface 23, indoor side projection surface 33, indoor side projection surface 43) and the indoor side portion of the back part of the three-sided frame part of the waterproof frame B in a first position (L-shaped in plan view for the upper gap, L-shaped in side view for the side gap), and the indoor side connecting member 17 inserted into the indoor side gap in the first position is rotated within the indoor side gap to assume a second position (upper The gap is L-shaped in side view, and the lateral gap is L-shaped in plan view), and the projection piece 170 of the indoor side connecting member 17 is fixed (typically by welding from the indoor side) to the indoor side portion of the projection part of the base frame A (the indoor side horizontal surface 23, the indoor side projection surface 33, the indoor side projection surface 43), and the projection piece 171 of the indoor side connecting member 17 is fixed (typically by welding from the indoor side) to the indoor side portion of the back part of the waterproof frame B (the indoor side portions of the connection pieces 57, 67, 77).

After connecting the projection part of base frame A and the back part of the three-sided frame part of waterproof frame B using outdoor side connecting member 16 and indoor side connecting member 17, fill the gap (including the outdoor side gap and the indoor side gap) between the projection part of base frame A and the back part of the three-sided frame part of waterproof frame B with mortar M, which is exemplified as a filler material.

In the third step, the step of installing the bottom frame 8 of the waterproof frame B on the floor surface FL includes anchoring the bottom frame 8 to the structure C within the floor surface FL. Mortar M, which is an example of a filler, is filled inside the bottom frame 8. Mortar M, which is an example of a filler, is filled in the space between the bottom frame 8 and the structure C within the floor surface FL. A sealing material S, which is an example of a watertight means, is provided between the upper end portion of the outdoor facing surface 80 of the bottom frame 8 and the outdoor floor surface FL.

In the fourth step, a sealing material S, which is an example of an outdoor watertight means, is provided on the outdoor side of the gap between the projection part of the base frame A and the back part of the three-sided frame part of the waterproof frame B, and a sealing material S, which is an example of an indoor watertight means, is provided on the indoor side of the indoor gap. A three-sided sealing material S is provided between the front part of the base frame A of the waterproof door frame and the front part of the waterproof frame B located inside the front part of the base frame A, and a three-sided sealing material S' is provided between the front part of the base frame A and the main body C on the outside of the front part of the base frame A (see Figure 1). The lower end of the three-sided sealing material S comes into contact with the lengthwise (opening width) end of the sealing material S provided at the upper end of the outdoor-side front surface 80 of the lower frame 8, forming a four-sided sealing material S. The grooves 54, 64, 74, 84 that open toward the outside are continuous on all four sides, and the watertight member 9 is fitted into the grooves 54, 64, 74, 84 on all four sides. The timing of attaching the watertight member 9 is not important. Also, a sealant S'' is provided on the outside side of the outside-side sealant S'' between the outside-side parts of the leading edge vertical frame 3 and trailing edge vertical frame 4 of the base frame A and the body C (see Figures 3, 5, and 6). The timing of providing the sealant S'' is not important.

1 Door body A Base frame 2 Upper frame of base frame 20 Outdoor facing surface 21 Indoor facing surface 22 Outdoor horizontal surface (facing portion, first facing surface)
23 Indoor horizontal surface (projection part, second projection surface)
24 Outdoor side contact part (outdoor side abutted part)
25 Indoor facing part (indoor abutting part)
3. Door end vertical frame of base frame 30: Outdoor facing surface 31: Indoor facing surface 32: Outdoor facing surface (facing portion, first facing surface)
33 Indoor side view (view part, second view)
34 Outdoor side contact part (outdoor side abutted part)
35 Indoor facing part (indoor abutting part)
330a Tip of outdoor side protrusion (outdoor side abutment part)
4 Base frame end side vertical frame 40 Outdoor facing surface 41 Indoor facing surface 42 Outdoor facing surface (facing portion, first facing surface)
43 Indoor side view (view part, second view)
44 Outdoor side contact part (outdoor side abutted part)
45 Indoor side facing part (indoor side abutting part)
B Waterproof frame 5 Upper frame of waterproof frame 50 Outdoor facing surface 51 Indoor facing surface 52 Outdoor bottom surface (prospective portion)
53 Indoor side underside (projection part)
55 Outdoor horizontal side (rear part)
56 Indoor horizontal side (rear part)
57 Connecting piece (back part)
6 Waterproof frame door end vertical frame 60 Outdoor facing surface 61 Indoor facing surface 62 Outdoor facing surface (facing portion)
63 Indoor side view (view area)
65 Outdoor side (rear part)
66 Indoor side (rear part)
67 Connecting piece (back part)
7 Waterproof frame door end side vertical frame 70 Indoor side facing surface 71 Outdoor side facing surface 72 Outdoor side facing surface (facing portion)
73 Indoor side view (view area)
75 Outdoor side (rear part)
76 Indoor side (rear part)
77 Connecting piece (back part)
8. Bottom frame of waterproof frame (shoe sill)
80: Outdoor facing surface 81: Indoor facing surface 8': Bottom frame (sill) of existing door frame
9 Watertight member 16 Outdoor side connecting member (connecting means)
160: Facing piece 161: Facing piece 17: Indoor side connecting member (connecting means)
170: Fitting piece 171: Fitting piece S: Sealing material (watertight means)
FL floor surface

Claims (22)

A door frame formed of a base frame and a waterproof frame having a watertight member,
The base frame is attached to an opening,
The base frame is a three-sided frame consisting of an upper frame and left and right vertical frames, and an outdoor side connecting member and an indoor side connecting member are fixed to at least the vertical frames of the base frame,
The waterproof frame is a four-sided frame consisting of an upper frame, left and right vertical frames, and a lower frame, and is located 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,
A watertight means is provided in a gap formed between the vertical frame of the waterproof frame and the vertical frame of the base frame.
Waterproof door frame. 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,
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 waterproof door frame according to claim 1. The three-sided frame portion consisting of the upper frame and the left and right vertical frames of the waterproof frame is located 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 a 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. The base frame includes a projection portion,
The three-sided frame portion includes a projection portion facing the opening and a back portion located on the opposite side of the projection portion,
The back portion of the three-sided frame portion and the projection 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 projection portion.
The waterproof door frame according to claim 3. The base frame includes a projection portion,
The projection portion of the base frame includes a first projection surface on the outdoor side and a second projection 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 prospective surface.
A waterproof door frame according to any one of claims 1 to 4. The projection portion of the base frame is located on the indoor side of the first projection surface and includes an outdoor-side abutment portion,
The outdoor side connecting member includes a projection piece and a facing piece, the projection piece abuts against the first projection surface, and a base end side of the facing piece is fixed to the first projection surface in a state in which the base end side is abutted against or adjacent to the outdoor side abutted portion,
The tip side of the outer connecting member is connected to the back part of the frame part.
A waterproof door frame as claimed in claim 5 (subject to claim 4) . The projection portion of the base frame is located on the outdoor side of the second projection surface and includes an indoor side abutment portion,
The indoor side connecting member includes a projection piece and a facing piece, the projection piece abuts against the second facing surface, and a base end side of the facing piece is fixed to the second facing surface in a state in which the base end side is abutted against or adjacent to the indoor side abutted portion,
The tip side of the end piece of the indoor side connecting member is connected to the back portion of the three-sided frame portion.
The waterproof door frame according to claim 6. The first projected surface of the base frame and the outdoor portion of the back portion of the three-sided frame portion face each other with an outdoor gap therebetween, the base end sides of the projected piece and the projected piece of the outdoor connecting member are located in the outdoor gap, and an outdoor watertight means is provided on the outdoor side of the outdoor gap and located on the outdoor side of the projected piece of the outdoor connecting member,
The second projected surface of the base frame and the indoor side portion of the back part of the three-sided frame part face each other with an indoor side gap therebetween, the base end sides of the projected piece and the projected piece of the indoor side connecting member are located in the indoor side gap, and an indoor side watertight means is provided on the indoor side of the indoor side gap, located on the indoor side of the projected piece of the indoor side connecting member.
A waterproof door frame according to any one of claims 6 and 7. The lower frame of the waterproof frame is anchored to a structure within the floor surface.
A waterproof door frame according to any one of claims 3 to 7 (limited to claims dependent on claim 3) . The waterproof frame is formed by joining an upper frame, left and right vertical frames, and a lower frame,
At least the joints between the left and right vertical frames and the bottom frame are waterproofed.
A waterproof door frame according to any one of claims 1 to 9. The outdoor facing surface of the base frame and the outdoor facing surface of the waterproof frame are substantially flush with each other.
A waterproof door frame according to any one of claims 1 to 10. The projected dimensions of the base frame and the projected 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 with each other.
The watertight door frame according to claim 11. A first step of removing a door body and a door sill from an opening frame of an existing door device to obtain a base frame which is a three-sided frame consisting of a top 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 frame of the base frame;
a third step of fixing the waterproof frame to the base frame by positioning the waterproof frame adjacent to the inside of the base frame and connecting the vertical frames of the waterproof frame to the outdoor side connecting member and the indoor side connecting member;
A fourth step of providing a watertight means in a gap formed between the vertical frame of the waterproof frame and the vertical frame of the base frame;
A fifth step of providing the waterproof frame with a watertight member that is in close contact with the door body when the door body is in a closed position, after or before the third step;
A method for constructing a waterproof door frame comprising: 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.
A method for installing a waterproof door frame according to claim 13. The third step is a step of positioning a three-sided frame portion consisting of the upper frame and the left and right vertical frames of a four-sided frame consisting of an upper frame, left and right vertical frames, and a lower frame so that the three-sided frame portion is adjacent to the inside of the base frame and fixed to the base frame,
Further, the step of installing the lower frame of the four-sided frame on a floor surface is included,
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.
A method for installing a waterproof door frame according to claim 14. The base frame includes a projection portion,
The three-sided frame portion includes a projection portion facing the opening and a back portion located on the opposite side of the projection 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 projection portion of the base frame using the outdoor side connecting member and the indoor side connecting member.
A method for installing a waterproof door frame according to claim 15. The projection portion of the base frame includes a first projection surface on the outdoor side and a second projection surface on the indoor side,
The outdoor side connecting member fixed to the first prospective surface is fixed to an outdoor side portion of the back portion of the three-sided frame portion,
The indoor side connecting member fixed to the second prospective surface is fixed to the indoor side portion of the rear portion of the three-sided frame portion.
A method for installing a waterproof door frame according to claim 16. The projection portion of the base frame is located on the indoor side of the first projection surface and includes an outdoor-side abutment portion,
The outdoor-side connecting member includes a projection piece and a projection piece, and the projection piece is fixed to the first projection surface with a base end side of the projection piece abutting or adjacent to the outdoor-side abutted portion,
The tip side of the outer connecting member is fixed to the outer portion of the rear part of the frame portion.
A method for installing a waterproof door frame according to claim 17. The projection portion of the base frame is located on the outdoor side of the second projection surface and includes an indoor side abutment portion,
The indoor side connecting member includes a projection piece and a projection piece, and the projection piece is fixed to the second projection surface with a base end side of the projection piece abutting or adjacent to the indoor side abutted portion,
The tip side of the end piece of the indoor side connecting member is fixed to the indoor side portion of the rear portion of the three-sided frame portion.
A method for installing a waterproof door frame according to claim 18. The first projected surface of the base frame and the outdoor side portion of the back part of the three-sided frame part face each other with an outdoor side gap therebetween, and 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 part of the three-sided frame part,
The second projected surface of the base frame and the indoor side portion of the rear portion of the three-sided frame portion face each other with an indoor side gap therebetween, and the indoor side connecting member is inserted from the indoor side gap and fixed to the second projected surface and the indoor side portion of the rear portion of the three-sided frame portion,
providing an outdoor watertight means located on the outdoor side of the outdoor gap;
An indoor watertight means is provided on the indoor side of the indoor gap.
A method for installing a waterproof door frame according to any one of claims 17 to 19. The step of installing the lower frame of the waterproof frame on a floor surface includes anchoring the lower frame to a structure within the floor surface.
A method for installing a waterproof door frame according to any one of claims 15 to 20. A door frame formed of a base frame and a waterproof frame having a watertight member,
The base frame is attached to an opening,
The waterproof frame is located adjacent to the inside of the base frame and is fixed to the base frame,
A watertight means is provided in a 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 with each other,
When viewed from the front, the watertight means is located 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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