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 outdoor side of the base frame A and a building frame C, 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 method for installing a waterproof door frame. [Background technology]

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

[0003] 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. [Patent Document 1] JP 8-260822 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a watertight door frame using an existing frame. [Means for solving the problem]

[0005] 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 outdoor side of the base frame and is fixed to the base frame. A waterproof door frame.

[0006] 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 outdoor side of the base frame and is fixed to the base frame, The bottom frame of the waterproof frame is placed on the floor surface. In one embodiment, the lower frame of the waterproof frame is anchored to a building block 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.

[0007] In one embodiment, 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 rear portion of the three-sided frame portion is fixed to a body, The indoor side portion of the three-sided frame portion is fixed to the outdoor side portion of the base frame with the indoor side facing surface of the three-sided frame portion and the outdoor side facing surface of the three-sided frame portion at least partially abutting each other. In one embodiment, a watertight means is provided between the outdoor side portion of the rear portion of the frame portion and the body.

[0008] In one embodiment, the indoor facing surface of the three-sided frame portion is fixed to the outdoor facing portion of the projection portion of the base frame by a connecting member.

[0009] In one embodiment, the indoor facing surface of the three-sided frame portion includes an abutment portion that abuts against the outdoor facing surface of the base frame, and a non-abutment portion; The connecting member consists of a facing piece fixed to the non-abutting portion of the indoor facing surface of the three-sided frame portion, and a facing piece fixed to the outdoor portion of the facing portion of the base frame.

[0010] In one embodiment, a decorative frame is provided on the projection portion of the base frame so as to conceal the connecting member, The decorative frame is approximately flush with the indoor side portion of the projection portion of the three-sided frame portion.

[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 to the base frame so as to be adjacent to the outdoor side of the base frame; It consists of:

[0012] In one aspect, the step of obtaining the base frame is a step of removing the door body and the threshold in an existing 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 step of positioning a three-sided frame part 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 outdoor side 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; It consists of:

[0013] In one aspect, the step of fixing the three-sided frame part to the base frame is: Fixing the back surface portion located on the opposite side of the prospective portion facing the opening of the three-sided frame part to the building body; Fixing the indoor side portion of the three-sided frame part to the outdoor side portion of the base frame in a state where the indoor side finding surface of the three-sided frame part and the outdoor side finding surface of the three-sided frame are at least partially in contact. In one aspect, a waterproof means is provided between the outdoor side portion of the back surface portion of the three-sided frame part and the building body.

[0014] In one aspect, fixing the indoor side portion of the three-sided frame part to the outdoor side portion of the base frame includes: Fixing the indoor side finding surface of the three-sided frame part to the outdoor side portion of the prospective portion of the base frame by a connecting member. In one aspect, a part of the indoor side finding surface of the three-sided frame part is brought into contact with the outdoor side finding surface of the base frame, and the remaining part of the indoor side finding surface is a non-contact part; Fixing the finding piece of the connecting member to the non-contact part, and fixing the prospective piece of the connecting member to the outdoor side portion of the prospective portion of the base frame.

[0015] In one embodiment, a decorative frame is provided on the projection portion of the base frame so as to be approximately flush with the indoor side portion of the projection portion of the three-sided frame portion, and the connecting member is concealed by the decorative frame.

[0016] 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. Effect of the Invention

[0017] 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. [Brief description of the drawings]

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

[0019] [A] Overall configuration of waterproof door device Fig. 1 is a front view of the waterproof door according to this embodiment 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. It should be noted 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. It should also be noted 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.

[0020] The waterproof door is composed of a four-sided waterproof door frame and a door body 1 for opening and closing the waterproof door frame. The waterproof door frame according to this embodiment is a door frame formed of a base frame A and a waterproof frame B, with the base frame A attached to an opening and the waterproof frame B located on the outdoor side of the base frame A and fixed to the base frame A. In other words, the waterproof door frame according to this embodiment is composed of the base frame A on the indoor side and the waterproof frame B on the outdoor side.

[0021] The base frame A is a three-sided steel frame consisting of an upper frame 2 and left and right vertical frames 3, 4, and in this embodiment, the hollows of 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, and the hollows of the upper frame 5, the left and right vertical frames 6, 7, and the 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 part consisting of the upper frame 5 and the left and right vertical frames 6, 7 of the waterproof frame B is fixed to the outdoor side of 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 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 the present specification will be described based on the door frame of the single-leaf door device, but the door frame according to the present invention can also be applied to door frames of door devices having 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 will be the trailing edge vertical frame of the second door body.

[0023] [B] Base frame configuration [B―1] Upper frame of 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 includes 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. 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 side 27 extending horizontally toward the indoor side is integrally formed at the upper end of the outdoor facing surface 20, and an indoor horizontal side 28 extending horizontally toward the outdoor side is integrally formed at the upper end of the indoor facing surface 21.

[0024] [B―2] Vertical frame on the door end side of the base frame 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 includes an outdoor-side visible surface 30, an indoor-side visible surface 31, and a projection 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 consists 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. The convex portion consists of an outdoor-side visible portion 34, an indoor-side visible portion 35, and a central visible surface 36. An outdoor-side visible edge 37 extending in the projection direction toward the indoor side is integrally formed at the outer end of the outdoor-side visible surface 30, and an indoor-side visible edge 38 extending in the projection direction toward the outdoor side is integrally formed at the outer end of the indoor-side visible surface 31.

[0025] [B―3] Vertical frame on the end of the base frame The configuration of the tail-end side vertical frame 4 of the base frame A will be described with reference to Fig. 6. The tail-end side vertical frame 4 of the base frame A is a long member located on the tail-end side of the opening and extending in the height direction, and includes an outdoor-side facing surface 40, an indoor-side facing surface 41, and a projection extending in the indoor-outdoor direction between the inner ends of the outdoor-side facing surface 40 and the indoor-side facing surface 41 in the opening width direction. The projection consists of an outdoor-side facing surface 42, an indoor-side facing surface 43, and a convex portion between the outdoor-side facing surface 42 and the indoor-side facing surface 43. The convex portion consists of an outdoor-side facing portion 44, an indoor-side facing portion 45, and a central facing surface 46. An outdoor-side facing edge 47 extending in the facing direction toward the indoor side is integrally formed at the outer end of the outdoor-side facing surface 40, and an indoor-side facing edge 48 extending in the facing direction toward the outdoor side is integrally formed at the outer end of the indoor-side facing surface 41.

[0026] [C] Base frame mounting structure 2 and 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' serving as a watertight means is provided 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' serving as a watertight means is provided 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 does not have to be provided.

[0027] As shown in Figures 3 and 5, in the door-end 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 projected edge 37 and the indoor-side projected edge 38, and the door-end vertical frame 3 is fixed to the framework C via the connecting pieces 39. The gap between the door-end vertical frame 3 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-side projected edge 37 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-side projected edge 38 and the framework C on the indoor side of the filled mortar M. Note that the indoor-side sealing material S' does not have to be provided.

[0028] As shown in Figures 3 and 6, in the trailing edge 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 projected edge 47 and the indoor side projected edge 48, and the trailing edge vertical frame 4 is fixed to the framework C via the connecting pieces 49. The gap between the trailing edge vertical frame 4 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 side projected edge 47 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 side projected edge 48 and the framework C on the indoor side of the filled mortar M. Note that the sealing material S' on the indoor side does not have to be provided.

[0029] 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 outdoor facing surfaces 20, 30, 40 are flush, and the indoor facing surfaces 21, 31, 41 are flush. The indoor facing surfaces 21, 31, 41 of the base frame A form the indoor facing surfaces of the waterproof door frame (consisting of the base frame A and the waterproof frame B) according to this embodiment, while the outdoor facing surfaces 20, 30, 40 of the base frame A are concealed by the waterproof frame B attached to the outdoor side of the base frame A and are not exposed to the outside. The base frame A according to this embodiment is a three-sided frame and does not have a bottom frame or a door sill that connects the lower end portions of the leading edge vertical frame 3 and the trailing edge vertical frame 4.

[0030] [D] Waterproof frame configuration [D―1] Upper frame of 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 a 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.

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

[0032] [D―2] Waterproof door end vertical frame The configuration of the door-end vertical frame 6 of the waterproof frame B will be described with reference to FIG. 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, and 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.

[0033] An outdoor side prospective edge 65 extending in a 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 extending in a prospective direction toward the outdoor side is integrally formed at the outer end of the indoor side prospective surface 61, and a plurality of connecting pieces 67 are fixed between the outdoor side prospective edge 65 and the indoor side prospective edge 66 with intervals in the opening height direction.

[0034] [D―3] Waterproof frame vertical frame on the end of the door The configuration of the trailing edge side vertical frame 7 of the waterproof frame B will be described with reference to FIG. 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 consists of 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.

[0035] An outdoor side prospective edge 75 extending in a 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 extending in a prospective direction toward the outdoor side is integrally formed at the outer end of the indoor side prospective surface 71, and a plurality of connecting pieces 77 are fixed between the outdoor side prospective edge 75 and the indoor side prospective edge 76 with intervals in the opening height direction.

[0036] [D―4] Bottom frame of waterproof frame The configuration of the lower frame 8 of the waterproof frame B will be described with reference to Fig. 2. 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 facing surface 80, an indoor facing surface 81, and an 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. The upper surface portion includes an outdoor inclined surface 82 that extends gently upward from the outdoor facing surface 80 toward the indoor side, an indoor side horizontal surface 83 that extends horizontally at a height above the outdoor inclined surface 82, and a groove portion 84 that is formed in a step between the indoor side end of the outdoor inclined surface 82 and the outdoor side end of the indoor side horizontal surface 83 and opens toward the outdoor side.

[0037] An outdoor horizontal edge 85 extending horizontally toward the indoor side is formed integrally with the lower end of the outdoor facing surface 80, and an indoor horizontal edge 86 extending horizontally toward the outdoor side is formed integrally with the lower end of the indoor facing surface 81, and a plurality of connecting pieces 87 are fixed at intervals in the opening width direction between the outdoor horizontal edge 85 and the indoor horizontal edge 86. 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 embodiment shown in the figure.

[0038] [D-5] Overall structure 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 projected dimensions of the upper frame 5, leading edge vertical frame 6, trailing edge vertical frame 7, and lower frame 8 of the waterproof frame B are approximately the same, the outdoor facing surfaces 50, 60, 70, and 80 are approximately flush, and the indoor facing surfaces 51, 61, 71, and 81 are approximately flush. 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 by welding) to form the waterproof frame, and the joints are waterproofed. The waterproofing treatment should be applied to 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. The grooves 54, 64, 74, and 84 that open toward the outdoor side are continuous around the four sides, and the watertight member 9 is fitted around the four sides. The outdoor facing surfaces 50, 60, 70, 80 of the upper frame 5, the door front vertical frame 6, the door rear vertical frame 7, and the lower frame 8 of the waterproof frame B form the outdoor facing surface of the waterproof door frame.

[0039] [E] Waterproof frame mounting structure The three-sided frame portion of the waterproof frame B, consisting of the upper frame 5 and the left and right vertical frames 6, 7, is positioned adjacent to the outdoor side of the base frame A and is fixed to the base frame A and the main body C, and the lower frame 8 of the waterproof frame B is installed on the floor surface.

[0040] The three-sided frame portion of the waterproof frame B (top frame 5, left and right vertical frames 6, 7) has a projected portion facing the opening and a back portion located on the opposite side of the projected portion, and the back portion of the three-sided frame portion of the waterproof frame B (top frame 5, left and right vertical frames 6, 7) is fixed to the main body C, and mortar M, which is shown as an example of a filling material, is filled in the gap formed between the back portion of the three-sided frame portion of the waterproof frame B (top frame 5, left and right vertical frames 6, 7) and the main body C, and sealing material S is provided on the outdoor side of the mortar M as a watertight means.

[0041] The indoor side portion of the three-sided frame portion (top frame 5, left and right vertical frames 6, 7) of the waterproof frame B is fixed to the outdoor side portion of the base frame A, with the indoor side facing surfaces 51, 61, 71 of the three-sided frame portion (top frame 5, left and right vertical frames 6, 7) of the waterproof frame B at least partially abutting with the outdoor side facing surfaces 20, 30, 40 of the base frame A. In this embodiment, the indoor side facing surfaces 51, 61, 71 of the three-sided frame portion (top frame 5, left and right vertical frames 6, 7) of the waterproof frame B are each fixed to the outdoor side portions of the projected portion of the base frame A (the outdoor side horizontal surface 22, the outdoor side projected surfaces 32, 42) by connecting members 16. The mounting structure of the waterproof frame B will be described in more detail below.

[0042] [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 has its back portion (upper portion) fixed to the frame C, and its indoor portion fixed to the outdoor portion of the upper frame 2 of the base frame A. The upper portion 510 of the indoor facing surface 51 of the upper frame 5 of the waterproof frame B abuts against the lower portion of the outdoor facing surface 20 of the upper frame 2 of the base frame A, and the lower portion 511 of the indoor facing surface 51 of the upper frame 5 of the waterproof frame B is located below the lower end of the outdoor facing surface 20 of the upper frame 2 of the base frame A. In other words, the indoor facing surface 51 of the upper frame 5 of the waterproof frame B consists of an abutting portion (upper portion 510) that abuts against the outdoor facing surface 20 of the upper frame 2 of the base frame A, and a non-abutting portion (lower portion 511). The height dimension of the indoor facing surface 51 of the upper frame 5 of the waterproof frame B in this embodiment is greater than the height dimension of the outdoor facing surface 20 of the upper frame 2 of the base frame A, but is not limited to this, and for example, the height dimension of the indoor facing surface 51 and the height dimension of the outdoor facing surface 20 may be approximately the same. Also, by increasing the height dimension of the indoor facing surface 51, the upper portion 510 of the indoor facing surface 51 may abut against the entire surface of the outdoor facing surface 20 of the upper frame 2 of the base frame A.

[0043] The connecting member 16 in this embodiment is an angle material with an L-shaped cross section made up of a front piece 160 and a facing piece 161, with the front piece 160 abutting and fixed in a horizontal position against the outdoor portion of the outdoor horizontal surface 22 of the upper frame 2, and the facing piece 161 hanging down from the outdoor end of the front piece 160 abutting and fixed against the lower portion (non-abutting portion) 511 of the indoor side facing surface 51 of the upper frame 5. The lower end of the facing piece 161 of the connecting member 16 is located approximately the same as or slightly above the lower end of the indoor side facing surface 51 of the upper frame 5 (the indoor side lower surface 53 of the upper frame 5).

[0044] In this embodiment, connecting members 16 are prepared as multiple short members, each of which is provided at intervals in the opening width direction, with the projection piece 160 of each connecting member 16 fixed (typically welded) to the outdoor portion of the outdoor-side horizontal surface 22 of the upper frame 2, and the projection piece 161 fixed (typically welded) to the lower portion 511 of the indoor-side projection surface 51 of the upper frame 5. Connecting members 16 may be short members or long members extending in the length direction (opening width direction) of the upper frames 2 and 5, and the length dimension and number are not limited.

[0045] On the back side (upper part) opposite to the projection part (lower part) of the upper frame 5 of the waterproof frame B, a plurality of connecting pieces 57 are located between the outdoor side horizontal edge 55, the indoor side horizontal edge 56, and the outdoor side horizontal edge 55 and the indoor side horizontal edge 56 at intervals in the opening width direction. When the three-sided frame part consisting of the upper frame 5 of the waterproof frame B and the left and right vertical frames 6, 7 is positioned adjacent to the outdoor side of the base frame A, a gap is formed between the back side of the upper frame 5 of the waterproof frame B and the frame C, and the back side of the upper frame 5 of the waterproof frame B and the frame C are anchored with the gap. This gap is filled with mortar M, which is exemplified as a filler, and a sealing material S is provided as a watertight means between the frame C and the outdoor side horizontal edge 55 of the upper frame 5, located on the outdoor side of the mortar M. The outdoor side facing surface 50 of the upper frame 5 of the waterproof frame B forms the upper part of the outdoor side facing surface of the waterproof door frame.

[0046] When the upper frame 5 of the waterproof frame B is fixed to the outdoor portion of the upper frame 2 of the base frame A, the projection portion (lower surface portion) of the upper frame 5 is located lower than the projection portion (lower surface portion) of the upper frame 2. In this embodiment, a plate-shaped decorative frame 17 is attached to the lower surface of the upper frame 2 of the base frame A so as to be flush with the indoor side lower surface 53 of the upper frame 5 of the waterproof frame B. The outdoor side portion of the lower surface of the upper frame of the waterproof door frame consisting of the base frame A and the waterproof frame B is formed from the indoor side lower surface 53 of the upper frame 5, and the indoor side portion of the lower surface of the upper frame is formed from the decorative frame 17. The decorative frame 17 is an elongated member extending across the entire width (opening width direction) of the lower surface of the upper frame 2, and the connecting portion (including the connecting member 16) of the upper frame 2 and the upper frame 5 is concealed by the decorative frame 17.

[0047] The decorative frame 17 has an outdoor portion connected by a screw to a first support member 18 that is connected by a screw to an outdoor portion of the indoor side horizontal surface 22 of the lower surface of the upper frame 2, and an indoor portion connected by a screw to a second support member 19 that is connected by a screw to an indoor side facing portion 25 of the downward protrusion of the lower surface of the upper frame 2. In the illustrated embodiment, the first support member 18 is so-called Z-shaped and the second support member 19 is so-called L-shaped, but the shapes of the first support member 18 and the second support member 19 are not limited to the illustrated embodiment. The first support member 18 and the second support member 19 may be short members or long members extending in the length direction (opening width direction) of the upper frames 2 and 5, and the length dimension and number are not limited. In one embodiment, the second support member 19 is attached to the lower surface of the upper frame 2 as one long member or multiple long members extending in the opening width direction with their ends abutting or approaching each other.

[0048] [E-2] Installation structure of the waterproof door end vertical frame As shown in Figures 3 and 5, the back part of the leading edge vertical frame 6 of the waterproof frame B is fixed to the frame C, and the outdoor side part of the base frame A is fixed to the outdoor side part of the leading edge vertical frame 3. The outer part 610 in the facing direction of the indoor side facing surface 61 of the leading edge vertical frame 6 of the waterproof frame B abuts against the inner part in the facing direction of the outdoor side facing surface 30 of the leading edge vertical frame 3 of the base frame A, and the inner part 611 in the facing direction of the indoor side facing surface 61 of the leading edge vertical frame 6 of the waterproof frame B is located inward from the inner end (outdoor side facing surface 32) of the outdoor side facing surface 30 of the leading edge vertical frame 3 of the base frame A. That is, the indoor facing surface 61 of the leading edge vertical frame 6 of the waterproof frame B is composed of an abutting portion (outer portion 610) that abuts against the outdoor facing surface 30 of the leading edge vertical frame 3 of the base frame A, and a non-abutting portion (inner portion 611). The visible dimension of the indoor facing surface 61 of the leading edge vertical frame 6 of the waterproof frame B according to this embodiment is larger than the visible dimension of the outdoor facing surface 30 of the leading edge vertical frame 3 of the base frame A, but is not limited to this, and for example, the visible dimension of the indoor facing surface 61 and the visible dimension of the outdoor facing surface 30 may be approximately the same. Also, by making the visible dimension of the indoor facing surface 61 larger, the outer portion 610 of the indoor facing surface 61 may abut against the entire surface of the outdoor facing surface 30 of the leading edge vertical frame 3 of the base frame A.

[0049] The connecting member 16 in this embodiment is an angle material with an L-shaped cross section made up of a projection piece 160 and a sight piece 161, the projection piece 160 abutting and fixed to the outdoor portion of the outdoor-side sight surface 32 of the leading-edge vertical frame 3, and the sight piece 161 extending inward in the sight direction from the outdoor-side end of the projection piece 160 abutting and fixed to the inner portion (non-abutting portion) 611 of the indoor-side sight surface 61 of the leading-edge vertical frame 6. The tip of the sight piece 161 of the connecting member 16 is positioned so as not to protrude from the indoor-side sight surface 63 of the leading-edge vertical frame 6.

[0050] In this embodiment, the connecting members 16 are prepared as multiple short members, each of which is provided at intervals in the opening height direction, with the projection piece 160 of each connecting member 16 fixed (typically by welding) to the outdoor side portion of the outdoor side projection surface 32 of the front vertical frame 3, and the projection piece 161 fixed (typically by welding) to the inside portion 611 of the indoor side projection surface 61 of the front vertical frame 6. The connecting members 16 may be short members or long members extending in the height direction (opening height direction) of the front vertical frames 3 and 6, and the length dimension and number are not limited.

[0051] On the back side of the waterproof frame B opposite to the projected part of the leading edge vertical frame 6, there are a plurality of connecting pieces 67 arranged at intervals in the opening height direction between the outdoor projected edge 65, the indoor projected edge 66, and the outdoor projected edge 65 and the indoor projected edge 66. 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 outdoor side of the base frame A, a gap is formed between the back side of the leading edge vertical frame 6 of the waterproof frame B and the frame C, and the back side of the leading edge vertical frame 6 of the waterproof frame B and the frame C are anchored with the gap. This gap is filled with mortar M, which is exemplified as a filler, and a sealing material S is provided as a watertight means between the frame C and the outdoor projected edge 65 of the leading edge vertical frame 6, located on the outdoor side of the mortar M. The outdoor facing surface 60 of the door-end vertical frame 6 of the waterproof frame B forms the door-end portion of the outdoor facing surface of the waterproof door frame.

[0052] With the leading edge vertical frame 6 of the waterproof frame B fixed to the outdoor portion of the leading edge vertical frame 3 of the base frame A, the projected portion of the leading edge vertical frame 6 is located inward in the front direction from the projected portion of the leading edge vertical frame 3. In this embodiment, a plate-shaped decorative frame 17 is attached to the projected portion of the leading edge vertical frame 3 of the base frame A so as to be flush with the indoor side projected surface 63 of the leading edge vertical frame 6 of the waterproof frame B. The outdoor side portion of the projected portion of the leading edge vertical frame of the waterproof door frame consisting of the base frame A and the waterproof frame B is formed from the indoor side projected surface 63 of the leading edge vertical frame 6, and the indoor side portion of the projected portion of the leading edge vertical frame is formed from the decorative frame 17. The decorative frame 17 is a long member extending across the entire height (in the opening height direction) of the projecting portion of the front door side vertical frame 3, and the decorative frame 17 conceals the connection portion (including the connecting member 16) between the front door side vertical frame 3 and the front door side vertical frame 6.

[0053] The decorative frame 17 has an outdoor portion connected by a screw to a first support member 18 that is connected by a screw to an outdoor portion of the indoor side visible surface 32 of the visible portion of the front vertical frame 3, and an indoor portion connected by a screw to a second support member 19 that is connected by a screw to an indoor side visible portion 35 of the convex portion of the visible portion of the front vertical frame 3. In the illustrated embodiment, the first support member 18 is a so-called Z-shaped member, and the second support member 19 is a so-called L-shaped member, but the shapes of the first support member 18 and the second support member 19 are not limited to the illustrated embodiment. The first support member 18 and the second support member 19 may be short members or long members that extend in the height direction (opening height direction) of the front vertical frame 3 and the front vertical frame 6, and the length dimension and number of them are not limited. In one embodiment, the second support member 19 is a single elongated member extending in the opening height direction, or multiple elongated members, which are attached to the projection portion of the door-end vertical frame 3 with their ends abutting or close together.

[0054] [E-3] Installation structure of waterproof door end side vertical frame As shown in Figures 3 and 6, the trailing edge vertical frame 7 of the waterproof frame B has its back portion fixed to the frame C, and its indoor side portion fixed to the outdoor side portion of the trailing edge vertical frame 4 of the base frame A. The outer portion 710 in the visual direction of the indoor side facing surface 71 of the trailing edge vertical frame 7 of the waterproof frame B abuts against the inner portion in the visual direction of the outdoor side facing surface 40 of the trailing edge vertical frame 4 of the base frame A, and the inner portion 711 in the visual direction of the indoor side facing surface 71 of the trailing edge vertical frame 7 of the waterproof frame B is located inward from the inner end (outdoor side facing surface 42) of the outdoor side facing surface 40 of the trailing edge vertical frame 4 of the base frame A. That is, the indoor facing surface 71 of the trailing edge vertical frame 7 of the waterproof frame B is composed of an abutting portion (outer portion 710) that abuts against the outdoor facing surface 40 of the trailing edge vertical frame 4 of the base frame A, and a non-abutting portion (inner portion 711). The visible dimension of the indoor facing surface 71 of the trailing edge vertical frame 7 of the waterproof frame B according to this embodiment is larger than the visible dimension of the outdoor facing surface 40 of the trailing edge vertical frame 4 of the base frame A, but is not limited to this, and for example, the visible dimension of the indoor facing surface 71 and the visible dimension of the outdoor facing surface 40 may be approximately the same. Also, by making the visible dimension of the indoor facing surface 71 larger, the outer portion 710 of the indoor facing surface 71 may abut against the entire surface of the outdoor facing surface 40 of the trailing edge vertical frame 4 of the base frame A.

[0055] The connecting member 16 in this embodiment is an angle material with an L-shaped cross section made up of a projection piece 160 and a sight piece 161, with the projection piece 160 abutting and fixed to the outdoor portion of the outdoor-side projection surface 42 of the trailing edge vertical frame 4, and the sight piece 161 extending inward in the projection direction from the outdoor-side end of the projection piece 160 abutting and fixed to the inner portion (non-abutting portion) 711 of the indoor-side projection surface 71 of the trailing edge vertical frame 7. The tip of the sight piece 161 of the connecting member 16 is positioned so as not to protrude from the indoor-side projection surface 73 of the trailing edge vertical frame 7.

[0056] In this embodiment, the connecting members 16 are prepared as multiple short members, each of which is provided at intervals in the opening height direction, with the projection piece 160 of each connecting member 16 fixed (typically by welding) to the outdoor side portion of the outdoor side projection surface 42 of the trailing edge vertical frame 4, and the projection piece 161 fixed (typically by welding) to the inner side portion 711 of the indoor side projection surface 71 of the trailing edge vertical frame 7. The connecting members 16 may be short members or long members extending in the height direction (opening height direction) of the trailing edge vertical frames 4 and 7, and the length dimension and number are not limited.

[0057] On the back side of the waterproof frame B opposite to the projected part of the tail end vertical frame 7, there are a plurality of connecting pieces 77 arranged at intervals in the opening height direction between the outdoor projected edge 75, the indoor projected edge 76, and the outdoor projected edge 75 and the indoor projected edge 76. 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 outdoor side of the base frame A, a gap is formed between the back side of the tail end vertical frame 7 of the waterproof frame B and the frame C, and the back side of the tail end vertical frame 7 of the waterproof frame B and the frame C are anchored with the gap in place. The gap is filled with mortar M, which is exemplified as a filler, and a sealing material S is provided as a watertight means between the frame C and the outdoor projected edge 75 of the tail end vertical frame 7, located on the outdoor side of the mortar M. The outdoor facing surface 70 of the trailing edge vertical frame 7 of the waterproof frame B forms the trailing edge portion of the outdoor facing surface of the waterproof door frame.

[0058] With the trailing edge vertical frame 7 of the waterproof frame B fixed to the outdoor portion of the trailing edge vertical frame 4 of the base frame A, the projected portion of the trailing edge vertical frame 7 is located inward in the front direction from the projected portion of the trailing edge vertical frame 4. In this embodiment, a plate-shaped decorative frame 17 is attached to the projected portion of the trailing edge vertical frame 4 of the base frame A so as to be flush with the indoor side projected surface 73 of the trailing edge vertical frame 7 of the waterproof frame B. The outdoor side portion of the projected portion of the trailing edge vertical frame of the waterproof door frame consisting of the base frame A and the waterproof frame B is formed from the indoor side projected surface 73 of the trailing edge vertical frame 7, and the indoor side portion of the projected portion of the trailing edge vertical frame is formed from the decorative frame 17. The decorative frame 17 is a long member extending across the entire height (in the opening height direction) of the projecting portion of the trailing edge vertical frame 4, and the decorative frame 17 conceals the connection portion (including the connecting member 16) between the trailing edge vertical frame 4 and the trailing edge vertical frame 7.

[0059] The decorative frame 17 has an outdoor portion connected by a screw to a first support member 18 that is connected by a screw to an outdoor portion of the indoor side prospective surface 42 of the prospective portion of the trailing edge vertical frame 4, and an indoor portion connected by a screw to a second support member 19 that is connected by a screw to an indoor side prospective portion 45 of the protruding portion of the prospective portion of the trailing edge vertical frame 4. In the illustrated embodiment, the first support member 18 is so-called Z-shaped and the second support member 19 is so-called L-shaped, but the shapes of the first support member 18 and the second support member 19 are not limited to the illustrated embodiment. The first support member 18 and the second support member 19 may be short members or long members that extend in the height direction (opening height direction) of the trailing edge vertical frame 4 and the trailing edge vertical frame 7, and the length dimensions and the number of them are not limited. In one embodiment, the second support member 19 is a single elongated member extending in the opening height direction, or multiple elongated members, which are attached to the projection portion of the vertical frame 4 on the door end side with their ends abutting or close to each other.

[0060] [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 main body C via the lower connecting piece 87. In the illustrated embodiment, the height is different between the indoor floor surface FL1 and the outdoor floor surface FL2, and the gap between the bottom frame 8 and the main body C in the floor surface is filled with mortar M, which is exemplified as a filler. In the illustrated embodiment, the height is different between the indoor floor surface FL1 and the outdoor floor surface FL2, and the outdoor floor surface FL2 is lower. In this embodiment, most of the indoor facing surface 81 of the bottom frame 8 is located within the floor surface FL1. A sealing material S, exemplified as a watertight means, is provided between the lower end portion of the outdoor facing surface 80 of the bottom frame 8 and the outdoor floor surface FL2.

[0061] [F] How to install a waterproof door frame The waterproof door frame according to this embodiment can be obtained by modifying an existing door device. FIG. 7 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 vertical frame 3 on the leading edge side, a vertical frame 4 on the trailing edge side, 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.

[0062] That is, the construction method of the waterproof door frame according to this embodiment is as follows: (1) In an existing door device, a first step is to remove a door body and a door sill 8' 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 outdoor side of the base frame A and fixing it to the base frame A and the structure C; (3) a third step of installing the bottom frame 8 of the waterproof frame B on the floor surface; The order of the second and third steps does not matter, and the second and third steps may be carried out substantially simultaneously.

[0063] In the first step, the step of removing the shoe slide 8' is, in one embodiment, a step of removing the entire shoe slide 8', but it may be a step of removing a part of the shoe slide 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 slide 8' may include a chipping operation of the floor surface FL.

[0064] 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 portion of the leading edge vertical frame 6 and the lower frame 8, and the joint between the lower end portion 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 connecting members 16 are attached on site (typically by welding).

[0065] 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 and the main body C includes positioning the three-sided frame part of the waterproof frame B adjacent to the outdoor side of the base frame A, and fixing the indoor side part of the three-sided frame part of the waterproof frame B to the outdoor side part of the base frame A with the indoor side visible surfaces 51, 61, 71 of the three-sided frame part and the outdoor side visible surfaces 20, 30, 40 of the base frame A at least partially abutting each other, and fixing the back part located on the opposite side of the visible part facing the opening of the three-sided frame part to the main body C. Fixing the indoor side portion of the three-sided frame portion of the waterproof frame B to the outdoor side portion of the base frame A includes fixing the indoor side visible faces 51, 61, 71 of the three-sided frame portion to the outdoor side portions (the outdoor horizontal surface 22, the outdoor visible face 32, the outdoor visible face 42) of the visible portion of the base frame A with the connecting members 16. The second step will be described in more detail below.

[0066] The indoor facing surfaces 51, 61, 71 of the three-sided frame portion of the waterproof frame B are at least partially abutted against the outdoor facing surfaces 20, 30, 40 of the base frame A, respectively. At this time, the indoor facing surfaces 51, 61, 71 of the three-sided frame portion are made up of abutting portions (upper portion 510, outer portion 610, outer portion 710) that abut against the outdoor facing surfaces 20, 30, 40 of the base frame A, and non-abutting portions (lower portion 511, inner portion 611, inner portion 711).

[0067] When the indoor facing surfaces 51, 61, 71 of the three-sided frame portion of the waterproof frame B are abutted against the outdoor facing surfaces 20, 30, 40 of the base frame A, respectively, the back portion of the three-sided frame portion and the main body C are separated to form a gap, and with the gap formed, the back portion of the three-sided frame portion is anchored to the main body C.

[0068] A connecting member 16 having an L-shaped cross section is prepared from a projection piece 160 and a projection piece 161, and the projection piece 161 of the connecting member 16 is fixed (typically by welding) to the non-abutting portions (lower portion 511, inner portion 611, inner portion 711) of the indoor side projection surfaces 51, 61, 71 of the three-sided frame portion of the waterproof frame B, and the projection piece 160 is fixed (typically by welding) to the outdoor side portions (outdoor horizontal surface 22, outdoor side projection surface 32, outdoor side projection surface 42) of the projection portion of the base frame A.

[0069] Mortar M, which is an example of a filler, is filled into the internal space of the three-sided frame part of the waterproof frame B. A gap is formed between the back part of the three-sided frame part anchored to the structure C and the structure C, and this gap is filled with mortar M, which is an example of a filler, and a sealing material S, which serves as a watertight means, is provided in the gap between the outdoor part of the back part (outdoor horizontal edge 55, outdoor projected edge 65, outdoor projected piece 75) and the structure C, located on the outdoor side of the filled mortar M.

[0070] A first support member 18 and a second support member 19 are each attached with screws to the projecting portion of base frame A, and the outdoor side portion of decorative frame 17 is fixed with screws to first support member 18, and the indoor side portion is fixed with screws to second support member 19. Although the effective opening of the waterproof door frame is slightly smaller (by the amount of decorative frame 17 attached) than the opening surrounded by base frame A obtained by renovating the existing door frame, it is approximately the same as the opening of the existing door frame.

[0071] In the third step, the step of installing the bottom frame 8 of the waterproof frame B on the floor surface includes anchoring the bottom frame 8 to a structure C within the floor surface. 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. 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.

[0072] A three-sided sealant S is provided between the exterior of the outdoor facing surfaces 50, 60, 70 of the three-sided frame portion of the waterproof door frame and the frame C, in a front view (see FIG. 1). The lower end of the three-sided sealant S comes into contact with the longitudinal end (opening width direction) of the sealant S provided at the upper end of the outdoor facing surface 80 of the bottom frame 8, thereby forming a four-sided sealant S. Grooves 54, 64, 74, 84 that open toward the outdoor side are continuous all around, and the watertight member 9 is fitted all around into the four-sided grooves 54, 64, 74, 84. The timing of attaching the watertight member 9 is not important. [Explanation of symbols]

[0073] 1 Door body A Base Frame 2 Upper frame of the base frame 20 Outdoor front view 22 Outdoor horizontal surface (outdoor part of the prospective section) 3 Vertical frame on the door end side of the base frame 30 Outdoor front view 32 Outdoor facing surface (outdoor part of the facing section) 4 Vertical frame on the end of the base frame 40 Outdoor front view 42 Outdoor facing surface (outdoor part of the facing section) B Waterproof frame 5. Upper frame of waterproof frame 51 Indoor front view 510 Upper part (contact part) 511 Lower part (non-contact part) 55 Outdoor horizontal side (rear part) 56 Indoor horizontal side (rear part) 57 Connecting piece (back part) 6. Waterproof door frame vertical frame 61 Indoor front view 610 Outside part (contact part) 611 Inside part (non-contact part) 65 Outdoor side (rear part) 66 Indoor side (rear part) 67 Connecting piece (back part) 7. Waterproof frame vertical frame at end of door 71 Outdoor front view 710 Outside part (contact part) 711 Inside part (non-contact part) 75 Outdoor side (rear part) 76 Indoor side (rear part) 77 Connecting piece (back part) 8. Bottom frame of waterproof frame (shoe sill) 8´ Bottom frame of existing door frame (sill) 9 Watertight materials 16 Connecting members 160 Prospect 161 Finding Piece 17 Decorative Frame S Sealing material (watertight means) FL1 Indoor floor surface (floor surface) FL2 Outdoor floor surface (floor surface)

Claims

1. 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, The waterproof frame is a four-sided frame consisting of a three-sided frame portion consisting of an upper frame and left and right vertical frames, and a lower frame, the three-sided frame portion being positioned adjacent to the outdoor side of the base frame, and the indoor side portion of the three-sided frame portion of the waterproof frame is fixed to the outdoor side portion of the base frame by connecting members at areas other than the at least partially abutting portion, with the indoor side facing surface of the three-sided frame portion and the outdoor side facing surface of the three-sided frame being at least partially abutting, A first portion of the connecting member is fixed to an outdoor portion of the base frame, and a second portion of the connecting member is fixed to an indoor portion of the waterproof frame, The lower frame of the waterproof frame is installed on a floor surface. Waterproof door frame.

2. The indoor facing surface of the three-sided frame portion comprises an abutting portion that abuts against the outdoor facing surface of the base frame, and a non-abutting portion, The first portion of the connecting member is a projection piece fixed to an outdoor portion of the projection portion of the base frame, The second portion of the connecting member is a facing piece fixed to the non-abutting portion of the indoor facing surface of the three-sided frame portion, The waterproof door frame according to claim 1.

3. The three-sided frame portion has a projection portion facing the opening and a back portion located on the opposite side of the projection portion, The rear portion of the three-sided frame portion is fixed to a body, A decorative frame is provided on the projection portion of the base frame so as to conceal the connecting member, The decorative frame is substantially flush with the indoor side portion of the projection portion of the three-sided frame portion. A waterproof door frame according to any one of claims 1 and 2.

4. A watertight means is provided between the outdoor portion of the rear part of the frame and the frame body. The waterproof door frame according to claim 3.

5. 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 1 to 4.

6. 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 5.

7. A process 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 step of positioning the three-sided frame portion of a waterproof frame, which is a four-sided frame consisting of a three-sided frame portion consisting of an upper frame, left and right vertical frames, and a lower frame, adjacent to the outdoor side of the base frame and fixing the three-sided frame portion to the base frame; A step of installing the lower frame of the waterproof frame on a floor surface; It consists of: The step of fixing the three-sided frame portion of the waterproof frame to the base frame includes: The indoor side portion of the three-sided frame portion is fixed to the outdoor side portion of the base frame by a connecting member at a portion other than the at least partially abutting portion, with the indoor side facing surface of the three-sided frame portion and the outdoor side facing surface of the three-sided frame being at least partially abutted, and a first portion of the connecting member is fixed to the outdoor side portion of the base frame, and a second portion of the connecting member is fixed to the indoor side portion of the waterproof frame. How to install a waterproof door frame.

8. In the process of fixing the three-sided frame portion of the waterproof frame to the base frame, A portion of the indoor side facing surface of the three-sided frame portion is abutted against the outdoor side facing surface of the base frame, and the remaining portion of the indoor side facing surface is a non-abutting portion; The first portion of the connecting member is fixed to an outdoor portion of the projection portion of the base frame; The second portion of the connecting member is fixed to the non-abutting portion of the indoor side facing surface of the frame portion. A method for installing the waterproof door frame according to claim 7.

9. A back portion located on the opposite side of the projection portion facing the opening of the three-sided frame portion is fixed to a body. A decorative frame is provided on the projection portion of the base frame so as to be substantially flush with the indoor portion of the projection portion of the three-sided frame portion, and the connecting member is concealed by the decorative frame; A method for installing a waterproof door frame according to any one of claims 7 and 8, comprising:

10. A watertight means is provided between the outdoor portion of the rear portion of the frame and the frame body. A method for installing the waterproof door frame according to claim 9.

11. 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 7 to 10.

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