JP7698462B2 - 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 fixed to the base frame.
A waterproof door frame.

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 of the waterproof frame consisting of the upper frame and the left and right vertical frames is fixed to the base frame, and the lower frame of the waterproof frame is placed on the floor surface.
In one embodiment, the outdoor facing portion of the three-sided frame portion of the waterproof frame is connected to the outdoor facing portion of the base frame,
The projection portion of the three-sided frame portion of the waterproof frame is connected to the projection portion of 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 the upper frame, the left and right vertical frames, and the lower frame,
At least the joints between the left and right vertical frames and the bottom frame are waterproofed.

In one aspect, a first connecting member having a connected piece extending in the projection direction is fixed to the projection portion of the base frame,
A second connecting member having a connecting piece extending in the front direction is fixed to the front portion of the three-sided frame portion of the waterproof frame,
The connected piece and the connecting piece are fixed in an abutting state.

In one aspect, the waterproof frame has a first prospective surface on the outdoor side and a second prospective surface on the indoor side located inside the opening with respect to the first prospective surface,
The indoor side portion of the first prospective surface and the outdoor side portion of the second prospective surface face each other, and a four-sided groove portion is formed from the indoor side portion, the outdoor side portion, and a prospective portion extending between the indoor side portion and the outdoor side portion, the four-sided groove portion being open toward the outdoor side and into which a watertight member is fitted;
The second connecting member, which is fixed to at least the left and right vertical frames of the waterproof frame, is fixed to the second projecting surface, and the base end portion of the second connecting member abuts against the projecting portion.

In one aspect, a connecting member having a connecting piece extending in the projection direction is fixed to one of the projection portions of the base frame and the three-sided frame portion,
The other of the projection portion of the base frame and the projection portion of the three-sided frame portion has a projection portion with which the connecting piece abuts,
The connecting piece and the front portion are fixed in an abutting state.

In one embodiment, a decorative cover is provided between the indoor side portion of the projection part of the three-sided frame part of the waterproof frame and the indoor side facing part of the base frame.

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;
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 fixing a three-sided frame portion consisting of the upper frame and the left and right vertical frames of a waterproof frame consisting of an upper frame, left and right vertical frames, and a lower frame to the base frame;
A step of installing the lower frame of the waterproof frame on a floor surface;
It consists of:

In one embodiment, the step of fixing the three-sided frame portion to the base frame includes:
Connecting the exterior side facing portion of the three-sided frame portion to the exterior side facing portion of the base frame;
The method includes connecting a projection portion of the three-sided frame portion to a projection portion of the base frame.
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 method includes a step of fixing a first connecting member having a connected piece extending in a projection direction to the projection portion of the base frame before fixing the waterproof frame to the base frame,
A second connecting member having a connecting piece extending in the front direction is fixed to the front portion of the three-sided frame portion,
The connecting piece is abutted against the connected piece and fixed.

In one aspect, the waterproof frame has a first prospective surface on the outdoor side and a second prospective surface on the indoor side located inside the opening with respect to the first prospective surface,
The indoor side portion of the first prospective surface and the outdoor side portion of the second prospective surface face each other, and a four-sided groove portion is formed from the indoor side portion, the outdoor side portion, and a prospective portion extending between the indoor side portion and the outdoor side portion, the four-sided groove portion being open toward the outdoor side and into which a watertight member is fitted;
The second connecting member, which is fixed to at least the left and right vertical frames of the waterproof frame, is fixed to the second projecting surface, and the base end portion of the second connecting member abuts against the projecting portion.

In one embodiment, after the connecting piece and the connected piece are fixed, a decorative cover is provided between the indoor side portion of the projection part of the three-sided frame part of the waterproof frame and the indoor side visible part of the base frame.

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 . 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 on the outdoor side of 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, and 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, and the hollows in the lower frame 8 are filled with mortar M, which is an example of a filler. The upper frame 5 and the left and right vertical frames 6, 7 may be filled 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 outdoor portion 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 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. The upper end of the outdoor facing surface 20 is integrally formed with an outdoor horizontal edge 27 extending horizontally toward the indoor side, and the upper end of the indoor facing surface 21 is integrally formed with an indoor horizontal edge 28 extending horizontally toward the outdoor side.

With reference to Figure 5, the configuration of the door-end side vertical frame 3 of the base frame A will be described. 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 facing surface 30, an indoor facing surface 31, and a projection portion extending in the indoor/outdoor direction between the inner ends of the outdoor facing surface 30 and the indoor facing surface 31 in the opening width direction, the projection portion being made up of an outdoor facing surface 32, an indoor facing surface 33, and a convex portion between the outdoor facing surface 32 and the indoor facing surface 33, the convex portion being made up of an outdoor facing portion 34, an indoor facing portion 35, and a central projection surface 36. An outdoor side prospective edge 37 that extends in the 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 that extends in the prospective direction toward the outdoor side is integrally formed at the outer end of the indoor side prospective surface 31.

6, the configuration of the trailing edge vertical frame 4 of the base frame A will be described. The trailing edge 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 has 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 facing surface 46. An outdoor side prospective edge 47 that extends in the 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 that extends in the 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. 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 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 in the gap between the indoor horizontal edge 28 and the framework C on the indoor side of the filled mortar M.

As shown in FIG. 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 exemplified as a filling material, and a sealing material S is provided 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 in the gap between the indoor side projected edge 38 and the structure C on the indoor side of the filled mortar M.

As shown in FIG. 6, in the trailing edge vertical frame 4 of the base frame A, a number 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 structure C via the connecting pieces 49. The gap between the trailing edge vertical frame 4 and the structure C is filled with mortar M, which is exemplified as a filler, and a sealing material S is provided 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 in the gap between the indoor side projected edge 48 and the structure C on the indoor side of the filled mortar M.

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 indoor facing surfaces 21, 31, and 41 are flush. In the illustrated embodiment, the upper frame 2, leading edge vertical frame 3, and trailing edge vertical frame 4 of the base frame A are reinforced by fixing them to the frame C using anchor bolts AB, but the use of anchor bolts AB is optional. The base frame A in this embodiment is a three-sided frame, and does not have a bottom frame or a footing that connects the lower end portions of the leading edge vertical frame 3 and the trailing edge vertical frame 4.

[D] Waterproof Frame Configuration With reference to FIG. 4, the configuration of the upper frame 5 of the waterproof frame B will be described. The upper frame 5 of the waterproof frame B is a long member located above the opening and extending in the opening width direction, and includes an outdoor facing surface 50 and a projection portion (lower surface portion) extending from the lower end of the outdoor facing surface 50 toward the indoor side. The projection portion is composed of an outdoor lower surface 51 extending horizontally from the lower end of the outdoor facing surface 50 toward the indoor side, an indoor lower surface 52 located below the outdoor lower surface 51 and extending horizontally, and a groove portion 53 formed in a step portion between the indoor side end of the outdoor lower surface 51 and the outdoor side end of the indoor lower surface 52, and opening toward the outdoor side. The outdoor lower surface 51 extends to the indoor side beyond the bottom 530 of the groove portion 53, and a projection portion 510 is formed so as to droop from the indoor side end of the outdoor lower surface 51 toward the indoor side lower surface 52. The shape of the upper frame 5 is not limited to the illustrated embodiment.

The upper frame 5 further includes an upper horizontal surface 54 that extends horizontally from the top end of the outdoor facing surface 50 toward the indoor side, and an outdoor facing edge 55 that rises from the end of the upper horizontal surface 54. As shown in FIG. 4, the upper horizontal surface 54 and the outdoor facing edge 55 are located above the opening (above the door body 1 in the closed position) and do not extend to the indoor side, and the outdoor facing portion of the upper frame 5 is formed by the outdoor facing surface 50, the upper horizontal surface 54, and the outdoor facing edge 55.

The structure of the leading edge vertical frame 6 of the waterproof frame B will be described with reference to Figure 5. The leading edge vertical frame 6 of the waterproof frame B is a long member located on the leading edge side of the opening and extending in the opening height direction, and has an outdoor facing surface 60 and a projection portion extending from the inner end of the opening width direction of the outdoor facing surface 60 toward the indoor side. The projection portion is made up of an outdoor facing surface 61 extending in the projection direction from the inner end of the outdoor facing surface 60 toward the indoor side, an indoor facing surface 62 located inside the outdoor facing surface 61 and extending in the projection direction, and a groove portion 63 formed in the step between the indoor side end of the outdoor facing surface 61 and the outdoor side end of the indoor facing surface 62, and opening toward the outdoor side.

The leading edge vertical frame 6 further includes an outer visible surface 64 that extends from the outer end of the outdoor visible surface 60 in the visible direction toward the indoor side, and an outdoor visible edge 65 that extends outward in the visible direction from the end of the outer visible surface 64. As shown in FIG. 5, the outer visible surface 64 and the outdoor visible edge 65 are located to the side of the opening (the side of the door body 1 in the closed position) and do not extend to the indoor side, and the outdoor visible portion of the leading edge vertical frame 6 is formed by the outdoor visible surface 60, the outer visible surface 64, and the outdoor visible edge 65.

As shown in FIG. 5, inside the outdoor portion of the leading vertical frame 6, a steel reinforcing plate 6' is provided along the inner surface of the surface material that constitutes the outdoor portion, across the height of the leading vertical frame 6. The reinforcing plate 6' is provided in contact with the inner surfaces of the outdoor facing surface 60, the outdoor facing surface 61, the bottom surface 630 of the groove 63, and the outer facing surface 64, and is composed of a first facing portion 60' that faces the outdoor facing surface 60, a first facing portion 61' that faces the outdoor facing surface 61, a second facing portion 630' that faces the bottom surface 630 of the groove 63, and a second facing portion 64' that faces the outer facing surface 64.

With reference to Figure 6, the structure of the tail-end vertical frame 7 of the waterproof frame B will be described. The tail-end vertical frame 7 of the waterproof frame B is a long member located on the tail-end side of the opening and extending in the opening height direction, and has an outdoor-side visible surface 70 and a projection portion extending from the inner end of the opening width direction of the outdoor-side visible surface 70 toward the indoor side. The projection portion is made up of an outdoor-side visible surface 71 extending in the projection direction from the inner end of the outdoor-side visible surface 70 toward the indoor side, an indoor-side visible surface 72 located inside the outdoor-side visible surface 71 and extending in the projection direction, and a groove portion 73 formed in the step between the indoor-side end of the outdoor-side visible surface 71 and the outdoor-side end of the indoor-side visible surface 72, which opens toward the outdoor side.

The trailing edge vertical frame 7 further includes an outer projection surface 74 that extends from the outer end of the outdoor projection surface 70 in the projection direction toward the indoor side, and an outdoor projection edge 75 that extends outward in the projection direction from the end of the outer projection surface 74. As shown in FIG. 6, the outer projection surface 74 and the outdoor projection edge 75 are located to the side of the opening (the side of the door body 1 in the closed position) and do not extend to the indoor side, and the outdoor projection portion of the trailing edge vertical frame 7 is formed by the outdoor projection surface 70, the outer projection surface 74, and the outdoor projection edge 75.

As shown in FIG. 6, inside the outdoor portion of the trailing edge vertical frame 7, a steel reinforcing plate 7' is provided along the inner surface of the surface material that constitutes the outdoor portion, across the height of the trailing edge vertical frame 7. The reinforcing plate 7' is provided in contact with the inner surfaces of the outdoor facing surface 70, the outdoor facing surface 71, the bottom surface 730 of the groove 73, and the outer facing surface 74, and is composed of a first facing portion 70' that faces the outdoor facing surface 70, a first facing portion 71' that faces the outdoor facing surface 71, a second facing portion 730' that faces the bottom surface 730 of the groove 73, and a second facing portion 74' that faces the outer facing surface 74.

The structure 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 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. The projection portion is made up of an outdoor inclined surface 82 that extends gently 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 the 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. The internal space of the lower frame 8 is filled with mortar M, which is exemplified as a filler. A reinforcing plate material may be provided inside so as to follow the back surface of the lower frame 8.

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 exterior facing surfaces 50, 60, 70, and 80 are approximately flush (in the illustrated embodiment, the exterior facing surface 80 protrudes slightly). The upper frame 5, leading edge vertical frame 6, trailing edge vertical frame 7, and lower frame 8 of the waterproof frame B are formed by joining (typically welding), 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 lower frame 8, and the joint between the lower end of the trailing edge vertical frame 7 and the lower frame 8. The grooves 53, 63, 73, and 83 that open toward the exterior are continuous around the four sides, and the watertight member 9 is fitted around the four sides.

[E] Waterproof frame installation structure As shown in Fig. 2 and Fig. 4, the upper frame 5 of the waterproof frame B is fixed to the upper frame 2 of the base frame A. The outdoor facing part of the upper frame 5 of the waterproof frame B is fixed to the outdoor facing surface 20 of the upper frame 2 of the base frame A, and the projection part (lower surface part) of the upper frame 5 is fixed to the projection part (lower surface part) of the upper frame 2. More specifically, as shown in Fig. 4, the outdoor facing edge 55 of the outdoor facing part of the upper frame 5 abuts against the outdoor facing surface 20 of the upper frame 2 and is fixed with a screw 550. The space between the upper horizontal surface 54 of the outdoor facing part of the upper frame 5 and the structure C is filled with a backup material M', which is exemplified as a filler material, and a sealing material S is provided between the upper horizontal surface 54 and the structure C, located on the outdoor side of the backup material M'. The filler material may be mortar. The outdoor facing surface 50 of the upper frame 5 of the waterproof frame B forms the upper part of the outdoor facing surface of the waterproof door frame.

A first connecting member 16 is fixed to the central horizontal surface 26 of the downward convexity of the projection of the upper frame 2 of the base frame A. As shown in FIG. 4, the first connecting member 16 is an angle bar having an L-shaped cross section, consisting of a horizontal fixing piece 160 fixed to the central horizontal surface 26 and a connected piece 161 hanging down from the outdoor end of the fixing piece 160. In the illustrated embodiment, the outdoor end of the fixing piece 160 of the first connecting member 16 extends outside beyond the outdoor-side visible portion 24 of the downward convexity, and the connected piece 161 is located outside beyond the outdoor-side visible portion 24, but this embodiment is not limited to this.

A second connecting member 17 is fixed to the indoor side of the outdoor side underside 51 of the upper frame 5 of the waterproof frame B. As shown in Figure 4, the second connecting member 17 is an angle bar with an L-shaped cross section, consisting of a horizontal fixing piece 170 fixed to the indoor side of the outdoor side underside 51 of the upper frame 5, and a connecting piece 171 that rises vertically from the indoor side end of the fixing piece 170. The fixing piece 170 of the second connecting member 17 is located above the groove portion 53.

The projection portion of the upper frame 5 and the projection portion of the upper frame 2 are fixed (an example of a fixing method is welding) in a state in which the connecting piece 171 of the second connecting member 17 provided on the projection portion of the upper frame 5 abuts (in a face-contact state) against the connected piece 161 of the first connecting member 16 provided on the projection portion of the upper frame 2. The first connecting member 16 may be a short member or a long member extending in the length direction (opening width direction) of the upper frame 2, and the length dimension and number are not limited. The second connecting member 17 may be a short member or a long member extending in the length direction (opening width direction) of the upper frame 5, and the length dimension and number are not limited.

The indoor side end of the indoor side underside 52 of the upper frame 5 is located on approximately the same vertical plane as the indoor side visible surface 21 of the upper frame 2, and a decorative cover 19 is attached between the indoor side portion of the indoor side underside 52 of the upper frame 5 and the indoor side visible surface 21 of the upper frame 2. The decorative cover 19 consists of a vertical surface 190 and a horizontal bent piece 191 extending from the lower end of the vertical surface 190 to the outdoor side, and the bent piece 191 is fixed to the indoor side portion of the indoor side underside 52 of the upper frame 5 with screws 1910, and the upper end portion of the vertical surface 190 is fixed to the indoor side visible surface 21 of the upper frame 2 with screws 1900.

The vertical surface 190 of the decorative cover 19 forms the upper portion of the indoor facing surface of the waterproof door frame. The decorative cover 19 closes the space between the indoor facing portion of the projection of the upper frame 2 (indoor facing horizontal surface 23, indoor facing portion 25 of the downward convex portion, and central horizontal surface 26) and the indoor facing portion of the projection of the upper frame 5 (indoor facing lower surface 52), and also conceals the connection portion (first connecting member 16) between the projection of the upper frame 5 and the projection of the upper frame 2 when viewed from the indoor side.

3 and 5, the leading edge vertical frame 6 of the waterproof frame B is fixed to the leading edge vertical frame 3 of the base frame A. The outdoor facing portion of the leading edge vertical frame 6 of the waterproof frame B is fixed to the outdoor facing surface 30 of the leading edge vertical frame 3 of the base frame A, and the projected portion of the leading edge vertical frame 6 is fixed to the projected portion of the leading edge vertical frame 3. More specifically, as shown in FIG. 5, the outdoor facing edge 65 of the outdoor facing portion of the leading edge vertical frame 6 abuts against the outdoor facing surface 30 of the leading edge vertical frame 3 and is fixed with a screw 650. The space between the outer projected surface 64 of the outdoor facing portion of the leading edge vertical frame 6 and the structure C is filled with a backup material M', which is exemplified as a filling material, and a sealing material S is provided between the outdoor facing surface 64 and the structure C, located on the outdoor side of the backup material M'. The filling material may be mortar. 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.

The first connecting member 16 is fixed to the central projection surface 36 of the projection of the projection part of the door-end vertical frame 3 of the base frame A. As shown in FIG. 5, the first connecting member 16 is an angle bar with an L-shaped cross section, consisting of a fixed piece 160 that extends in the projection direction and is fixed to the central projection surface 36, and a connected piece 161 that extends inward in the projection direction (away from the central projection surface 36) from the outdoor end of the fixed piece 160. In the illustrated embodiment, the outdoor end of the fixed piece 160 of the first connecting member 16 extends outdoors beyond the outdoor projection part 34 of the projection, and the connected piece 161 is located outdoors beyond the outdoor projection part 34, but this embodiment is not limited to this.

A second connecting member 18 is fixed to the indoor side visible surface 62 of the door-end vertical frame 6 of the waterproof frame B. As shown in Figure 5, the second connecting member 18 is an angle bar having an L-shaped cross section, which is made up of a fixed piece 180 extending in the visible direction fixed to the indoor side visible surface 62, and a connecting piece 181 extending outward in the visible direction (away from the indoor side visible surface 62) from the outdoor end of the fixed piece 180. In this embodiment, the base end portion of the connecting piece 181 abuts against a second visible portion 630' of the reinforcing plate 6' which abuts against the inner surface of the bottom surface 630 of the groove portion 63 of the visible portion of the door-end vertical frame 6 of the waterproof frame B. When water pressure acts on the outdoor facing surface 10 of the door body 1 when the opening is fully closed, a force is applied to the waterproof door frame through the watertight member 9 provided in the groove 63 of the leading vertical frame 6 of the waterproof frame B and the groove 73 of the trailing vertical frame 7, but the second connecting member 18 is stably subjected to water pressure because the fixing piece 180 is fixed to the indoor facing surface 62 and the base end portion of the connecting piece 181 fixed to the connected piece 161 abuts from the indoor side against the second facing portion 630' of the reinforcing plate 6' that abuts against the inner surface of the bottom surface 630 of the groove 63. The reinforcing plate 6' is an optional element, and the reinforcing plate 6' may not be provided as long as a predetermined strength is obtained. The second connecting member 18 attached to the door end vertical frame 6 has larger external dimensions and thickness than the second connecting member 17 attached to the upper frame 5, and has greater strength, increasing the strength of the area where greater water pressure can act (greater water pressure is applied to the lower part of the waterproof door frame than to the upper part).

The projection portion of the leading edge vertical frame 6 and the projection portion of the leading edge vertical frame 3 are fixed (an example of a fixing method is welding) with the connecting piece 181 of the second connecting member 18 provided on the projection portion of the leading edge vertical frame 6 abutting (surface contact state) the connected piece 161 of the first connecting member 16 provided on the projection portion of the leading edge vertical frame 3. The first connecting member 16 may be a short member or a long member extending in the height direction of the leading edge vertical frame 3, and there are no limitations on the length dimension or number. The second connecting member 18 may be a short member or a long member extending in the height direction of the leading edge vertical frame 6, and there are no limitations on the length dimension or number.

The indoor end of the indoor side projection surface 62 of the leading vertical frame 6 is located on approximately the same vertical plane as the indoor side visible surface 31 of the leading vertical frame 3, and a decorative cover 19 is attached between the indoor side part of the indoor side projection surface 62 of the leading vertical frame 6 and the indoor side visible surface 31 of the leading vertical frame 3. The decorative cover 19 consists of a vertical surface 190 and a bent piece 191 that extends in the projection direction from the inner end of the vertical surface 190 in the opening width direction toward the outdoor side, and the bent piece 191 is fixed to the indoor side part of the indoor side projection surface 62 of the leading vertical frame 6 with a screw 1910, and the outer end of the vertical surface 190 is fixed to the indoor side visible surface 31 of the leading vertical frame 3 with a screw 1900.

The vertical surface 190 of the decorative cover 19 forms the leading edge portion of the indoor facing surface of the waterproof door frame. The decorative cover 19 closes the space between the indoor facing portion of the leading edge vertical frame 3 (indoor facing surface 33, indoor facing portion 35 of the convex portion, and central facing surface 36) and the indoor facing portion of the leading edge vertical frame 6 (indoor facing surface 62), and also conceals the connection portion (first connecting member 16, second connecting member 18) between the leading edge vertical frame 6 and the leading edge vertical frame 3 when viewed from the indoor side.

As shown in Figures 3 and 6, the tail end vertical frame 7 of the waterproof frame B is fixed to the tail end vertical frame 4 of the base frame A. The outdoor facing portion of the tail end vertical frame 7 of the waterproof frame B is fixed to the outdoor facing surface 40 of the tail end vertical frame 4 of the base frame A, and the projection portion of the tail end vertical frame 7 is fixed to the projection portion of the tail end vertical frame 4. More specifically, as shown in Figure 6, the outdoor facing edge 75 of the outdoor facing portion of the tail end vertical frame 7 abuts against the outdoor facing surface 40 of the tail end vertical frame 4 and is fixed with a screw 750. The space between the outer facing surface 74 of the outdoor facing portion of the tail end vertical frame 7 and the structure C is filled with a backup material M', which is exemplified as a filling material, and a sealing material S is provided between the outdoor facing surface 74 and the structure C, located on the outdoor side of the backup material M'. The filling material may be mortar. The outdoor facing surface 70 of the tail end vertical frame 7 of the waterproof frame B is the tail end portion of the outdoor facing surface of the waterproof door frame.

The first connecting member 16 is fixed to the central projection surface 46 of the projection part of the end-of-door vertical frame 4 of the base frame A. As shown in FIG. 5, the first connecting member 16 is an angle bar having an L-shaped cross section, which is made up of a fixed piece 160 that extends in the projection direction and is fixed to the central projection surface 46, and a connected piece 161 that extends inward in the projection direction (away from the central projection surface 46) from the outdoor end of the fixed piece 160. In the illustrated embodiment, the outdoor end of the fixed piece 160 of the first connecting member 16 extends outside beyond the outdoor projection part 44 of the projection, and the connected piece 161 is located outside beyond the outdoor projection part 44, but this embodiment is not limited to this.

A second connecting member 18 is fixed to the indoor side visible surface 72 of the trailing edge vertical frame 7 of the waterproof frame B. As shown in Figure 6, the second connecting member 18 is an angle member having an L-shaped cross section, consisting of a fixed piece 180 extending in the visible direction fixed to the indoor side visible surface 72, and a connecting piece 181 extending outward in the visible direction (away from the indoor side visible surface 72) from the outdoor end of the fixed piece 180. In this embodiment, the base end portion of the connecting piece 181 abuts against a second visible portion 730' of the reinforcing plate 7' that abuts against the inner surface of the bottom surface 730 of the groove portion of the visible portion of the trailing edge vertical frame 7 of the waterproof frame B. When water pressure acts on the outdoor facing surface 10 of the door body 1 when the opening is fully closed, a force is applied to the waterproof door frame via the watertight member 9 provided in the groove 63 of the leading vertical frame 6 of the waterproof frame B and the groove 73 of the trailing vertical frame 7, but the second connecting member 18 is stably subjected to water pressure because the fixing piece 180 is fixed to the indoor facing surface 72 and the base end portion of the connecting piece 181 fixed to the connected piece 161 abuts from the indoor side against the second facing portion 730' of the reinforcing plate 7' that abuts against the inner surface of the bottom surface 730 of the groove 73. The reinforcing plate 7' is an optional element, and the reinforcing plate 7' may not be provided as long as a predetermined strength is obtained. The second connecting member 18 attached to the end-of-door vertical frame 7 has larger external dimensions and thickness than the second connecting member 18 attached to the upper frame 5, and has greater strength, increasing the strength of the area where greater water pressure can act (greater water pressure is applied to the lower area than to the upper area of the waterproof door frame).

The projection portion of the trailing edge vertical frame 7 and the projection portion of the trailing edge vertical frame 4 are fixed (welding is an example of a fixing method) in a state in which the connecting piece 181 of the second connecting member 18 provided on the projection portion of the trailing edge vertical frame 7 abuts (surface contact state) against the connected piece 161 of the first connecting member 16 provided on the projection portion of the trailing edge vertical frame 4. The first connecting member 16 may be a short member or a long member extending in the height direction of the trailing edge vertical frame 4, and there are no limitations on the length dimension or number. The second connecting member 18 may be a short member or a long member extending in the height direction of the trailing edge vertical frame 7, and there are no limitations on the length dimension or number.

The indoor end of the indoor side projection surface 72 of the trailing edge vertical frame 7 is located on approximately the same vertical plane as the indoor side visible surface 41 of the trailing edge vertical frame 4, and a decorative cover 19 is attached between the indoor side portion of the indoor side projection surface 72 of the trailing edge vertical frame 7 and the indoor side visible surface 41 of the trailing edge vertical frame 4. The decorative cover 19 consists of a vertical surface 190 and a bent piece 191 that extends in the projection direction from the inner end of the vertical surface 190 in the opening width direction toward the outdoor side, and the bent piece 191 is fixed to the indoor side portion of the indoor side projection surface 72 of the trailing edge vertical frame 7 with a screw 1910, and the outer end portion of the vertical surface 190 is fixed to the indoor side visible surface 41 of the trailing edge vertical frame 4 with a screw 1900.

The vertical surface 190 of the decorative cover 19 forms the tail end portion of the indoor facing surface of the waterproof door frame. The decorative cover 19 closes the space between the indoor facing portion of the tail end vertical frame 4 (indoor facing surface 43, indoor facing portion 45 of the convex portion, and central facing surface 46) and the indoor facing portion of the tail end vertical frame 7 (indoor facing surface 72), and also conceals the connection portion (first connecting member 16, second connecting member 18) between the facing portion of the tail end vertical frame 7 and the facing portion of the tail end vertical frame 4 when viewed from the indoor side.

In the lower frame 8 of the waterproof frame B, the lower end of the outdoor facing surface 80 is integrally formed with an outdoor horizontal edge 85 that extends horizontally toward the indoor side, and the lower end of the indoor facing surface 81 is integrally formed with an indoor horizontal edge 86 that extends horizontally toward the outdoor side. A plurality of connecting pieces 87 are fixed between the outdoor horizontal edge 85 and the indoor horizontal edge 86 at intervals in the width direction, and the lower frame 8 is anchored to the structure C via the connecting pieces 87. In addition, in the illustrated embodiment, the indoor facing surface 81 of the lower frame 8 is anchored to the structure C. The gap between the lower frame 8 and the structure C in the floor surface FL is filled with mortar M, which is exemplified as a filler, and a sealing material S is provided between the outdoor horizontal edge 85 and the structure C on the outdoor side of the mortar M. The outdoor facing surface 80 of the lower frame 8 of the waterproof frame B is the lower part of the outdoor facing surface of the waterproof door frame.

As described above, in this embodiment, a first connecting member 16 having a connected piece 161 extending in the visible direction is fixed to the projection portion of base frame A, and a second connecting member 17 or 18 having connecting pieces 171, 181 extending in the visible direction is fixed to the projection portion of the three-sided frame portion of waterproof frame B, and the connected piece 161 and the connecting pieces 171, 181 are fixed in an abutting state, thereby connecting the projection portion of the three-sided frame portion of waterproof frame B to the projection portion of base frame A, but the projection portion of the three-sided frame portion of waterproof frame B and the projection portion of base frame A may be connected using a connecting member (not shown) provided on either the projection portion of the three-sided frame portion of waterproof frame B or the projection portion of base frame A. Specifically, a connecting member with a connecting piece extending in the facing direction is fixed to one of the facing parts of the base frame A and the three-sided frame part of the waterproof frame B, and the other of the facing parts of the base frame A and the three-sided frame part of the waterproof frame B has a facing part with which the connecting piece abuts (e.g., the outdoor facing parts 24, 34, 44, the second facing parts 510, 630', 730'), and the facing part of the three-sided frame part of the waterproof frame B and the facing part of the base frame A can be connected by fixing the connecting piece and the facing part in abutting state.

[F] Construction method of waterproof door frame The waterproof door frame according to this embodiment can be obtained by renovating an existing door device. Fig. 7 is a vertical cross-sectional view showing 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 door front side, a vertical frame 4 on the door rear 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.

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 fixing a three-sided frame portion of the waterproof frame B, which is made up of the upper frame 5 and the left and right vertical frames 6 and 7, and the lower frame 8, 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;
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 vertical frame 6, the trailing vertical frame 7, and the lower frame 8 of the waterproof frame B. At least the joint between the lower end of the leading vertical frame 6 and the lower frame 8, and the joint between the lower end of the trailing vertical frame 7 and the lower frame 8 are waterproofed. The waterproofing is performed by caulking the butt joints from the back side of the waterproof frame B. The second connecting member 17 is fixed to the upper frame 5, the reinforcing plate 6' and the second connecting member 18 are fixed to the leading vertical frame 6, and the reinforcing plate 7' and the second connecting member 18 are fixed to the trailing vertical frame 7, all of which are performed in the factory. The waterproof frame B is assembled in the factory and transported to the site as the waterproof frame B.

In the second step, the step of fixing the three-sided frame portion of the waterproof frame B to the base frame A includes connecting the exterior facing portion of the three-sided frame portion of the waterproof frame B to the exterior facing portion of the base frame A, and connecting the projection portion of the three-sided frame portion of the waterproof frame B to the projection portion of the base frame A.

In this embodiment, the process of connecting the outdoor facing part of the three-sided frame part of the waterproof frame B to the outdoor facing part of the base frame A includes abutting the outdoor facing edge 55 of the outdoor facing part of the upper frame 5 against the outdoor facing surface 20 of the upper frame 2 and fixing it with screws 550, abutting the outdoor facing edge 65 of the outdoor facing part of the leading edge vertical frame 6 against the outdoor facing surface 30 of the leading edge vertical frame 3 and fixing it with screws 650, and abutting the outdoor facing edge 75 of the outdoor facing part of the trailing edge vertical frame 7 against the outdoor facing surface 40 of the trailing edge vertical frame 4 and fixing it with screws 750.

In this embodiment, the process of connecting the projection portion of the three-sided frame portion of waterproof frame B to the projection portion of base frame A includes a process of fixing a first connecting member 16 having a connected piece 161 extending in the projection direction to the projection portion of base frame A before fixing waterproof frame B to base frame A. More specifically, the first connecting member 16 is an angle material having an L-shape in cross section formed by a fixed piece 160 and a connected piece 161, and the fixed piece 160 is fixed to the central horizontal plane 26 of the downward convex portion of the projection portion of the upper frame 2 of base frame A, and the connected piece 161 is located outdoors relative to the outdoor-side projection portion 24 and hangs down from the outdoor end of the fixed piece 160. The first connecting member 16 has a fixed piece 160 fixed to the central projected surface 36 of the convex part of the projected part of the door end vertical frame 3 of the base frame A, and the connected piece 161 is located outside of the outdoor side visible part 34 and extends inward in the visible direction from the outdoor end of the fixed piece 160 (direction away from the central projected surface 36). The first connecting member 16 has a fixed piece 160 fixed to the central projected surface 46 of the convex part of the projected part of the door end vertical frame 4 of the base frame A, and the connected piece 161 is located outside of the outdoor side visible part 44 and extends inward in the visible direction from the outdoor end of the fixed piece 160 (direction away from the central projected surface 46).

A second connecting member 17 having a connecting piece 171 extending in the visible direction is fixed to the projection (lower surface) of the upper frame 5 of the three-sided frame portion of the waterproof frame B, and a second connecting member 18 having a connecting piece 181 extending in the visible direction is fixed to the projection portions of the leading vertical frame 6 and trailing vertical frame 7 of the three-sided frame portion of the waterproof frame B. The second connecting members 17, 18 are fixed to the three-sided frame portion of the waterproof frame B at the factory, and the waterproof frame B is delivered to the site equipped with the second connecting members 17, 18.

In this embodiment, the process of connecting the projection portion of the three-sided frame portion of waterproof frame B to the projection portion of base frame A includes abutting and fixing the connecting pieces 171, 181 of waterproof frame B to the connected piece 161 of base frame A. In this embodiment, the connecting pieces 171, 181 of waterproof frame B and the connected piece 161 of base frame A are fixed by welding them from the indoor side.

More specifically, spaces that allow welding from the indoor side are formed between the indoor side portion of the projection of the upper frame 2 (indoor side horizontal surface 23, indoor side visible part 25 and central horizontal surface 26 of the downward convex part) and the indoor side portion of the projection of the upper frame 5 (indoor side underside surface 52), between the indoor side portion of the projection of the leading vertical frame 3 (indoor side visible surface 33, indoor side visible part 35 and central visible surface 36 of the convex part) and the indoor side portion of the projection of the leading vertical frame 6 (indoor side visible surface 62), and between the indoor side portion of the projection of the trailing vertical frame 4 (indoor side visible surface 43, indoor side visible part 45 and central visible surface 46 of the convex part) and the indoor side portion of the projection of the trailing vertical frame 7 (indoor side visible surface 72).

After fixing the connecting pieces 171, 181 of the waterproof frame B and the connected piece 161 of the base frame A, a decorative cover 19 is provided between the indoor side part of the prospective portion of the three-sided frame part of the waterproof frame B and the indoor side visible part of the base frame A. More specifically, the folded piece 191 of the decorative cover 19 is fixed to the indoor side portion of the indoor side lower surface 52 of the upper frame 5 with a screw 1910, the upper end portion of the vertical surface 190 is fixed to the indoor side visible surface 21 of the upper frame 2 with a screw 1900, the folded piece 191 of the decorative cover 19 is fixed to the indoor side portion of the indoor side visible surface 62 of the end side vertical frame 6 with a screw 1910, the outer end portion of the vertical surface 190 is fixed to the indoor side visible surface 31 of the end side vertical frame 3 with a screw 1900, the folded piece 191 of the decorative cover 19 is fixed to the indoor side portion of the indoor side visible surface 72 of the end side vertical frame 7 with a screw 1910, and the outer end portion of the vertical surface 190 is fixed to the indoor side visible surface 41 of the end side vertical frame 4 with a screw 1900.

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 material, is filled inside the bottom frame 8.

The space between the upper horizontal surface 54 of the outdoor facing part of the upper frame 5 and the structure C is filled with mortar M, which is an example of a filler material, and a sealing material S is provided between the upper horizontal surface 54 and the structure C on the outdoor side of the mortar M. The space between the outer projected surface 64 of the outdoor facing part of the front vertical frame 6 and the structure C is filled with mortar M, which is an example of a filler material, and a sealing material S is provided between the outdoor projected surface 64 and the structure C on the outdoor side of the mortar M. The space between the outer projected surface 74 of the outdoor facing part of the rear vertical frame 7 and the structure C is filled with mortar M, which is an example of a filler material, and a sealing material S is provided between the outdoor projected surface 74 and the structure C on the outdoor side of the mortar M. Mortar M, which is an example of a filler, is filled in the gap between the bottom frame 8 and the structure C in the floor surface FL, and a sealing material S is provided on the outdoor side of the mortar M between the outdoor horizontal edge 85 and the structure C. Sealing material S is provided around the outside of the outdoor facing surfaces 50, 60, 70, and 80 of the waterproof door frame (see Figure 1).

1 Door body A Base frame 2 Upper frame of base frame 20 Outdoor facing surface (outdoor facing portion)
21 Indoor facing surface (indoor facing part)
3. Door end vertical frame 30 of base frame: Outdoor facing surface (outdoor facing portion)
31 Indoor facing surface (indoor facing part)
4. Base frame end side vertical frame 40: Outdoor facing surface (outdoor facing portion)
41 Indoor facing surface (indoor facing part)
B Waterproof frame 5 Upper frame 51 of waterproof frame Outdoor side lower surface (first prospective surface)
52 Indoor side underside (second prospective surface)
6 Waterproof frame door end vertical frame 61 Outdoor facing surface (first facing surface)
62 Indoor side view (second view)
7 Waterproof frame door end side vertical frame 71 Outdoor side prospective surface (first prospective surface)
72 Indoor side view (second view)
8. Bottom frame of waterproof frame (shoe sill)
8´ Bottom frame of existing door frame (sill)
16 First connecting member 161 Connected piece 17 Second connecting member 171 Connecting piece 18 Second connecting member 181 Connecting pieces 630', 730' Front portion 19 Decorative cover

Claims (18)

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 a first connecting member extending in a front direction is 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 a second connecting member extending in a front direction is fixed to at least the vertical frames of the waterproof frame,
The waterproof frame is fixed to the base frame by fixing the first connecting member and the second connecting member in an abutting state.
Waterproof door frame. A first connecting member extending in a front direction is fixed to the upper frame of the base frame,
A second connecting member extending in a front direction is fixed to the upper frame of the waterproof frame,
The first connecting member of the upper frame and the second connecting member of the upper frame are fixed in an abutting state.
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 fixed to the base frame, and the lower frame of the waterproof frame is installed on a floor surface.
A waterproof door frame according to any one of claims 1 and 2. The outdoor facing portion of the three-sided frame portion of the waterproof frame is connected to the outdoor facing portion of the base frame,
The first connecting member and the second connecting member are fixed, so that the projection portion of the three-sided frame portion of the waterproof frame is connected to the projection portion of the base frame.
The waterproof door frame according to claim 3. The first connecting member is fixed to the projection portion of the base frame and includes a connected piece extending in the projection direction,
The second connecting member is fixed to the projection portion of the waterproof frame and includes a connecting piece extending in the projection direction,
The connected piece and the connecting piece are fixed in a state of abutment.
A waterproof door frame according to any one of claims 1 to 4. The waterproof frame has a first prospective surface on the outdoor side and a second prospective surface on the indoor side located inside the opening with respect to the first prospective surface,
The indoor side portion of the first prospective surface and the outdoor side portion of the second prospective surface face each other, and a four-sided groove portion is formed from the indoor side portion, the outdoor side portion, and a prospective portion extending between the indoor side portion and the outdoor side portion, the four-sided groove portion being open toward the outdoor side and into which a watertight member is fitted;
The second connecting member fixed to at least the left and right vertical frames of the waterproof frame is fixed to the second projection surface, and a base end portion of the second connecting member abuts against the projection portion.
The waterproof door frame according to claim 5. A decorative cover is provided between the indoor side portion of the projection portion of the three-sided frame portion of the waterproof frame and the indoor side facing portion of the base frame.
A waterproof door frame as claimed in any one of claims 4 to 6 (limited to claims dependent on claim 3) . 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 the upper frame, the left and right vertical frames, and the 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 8. 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 a first connecting member extending in a front direction to at least the vertical frame of the base frame;
a third step of fixing a waterproof frame, which is made up of an upper frame, left and right vertical frames, and a lower frame and is equipped with a watertight member , to the base frame, wherein a second connecting member extending in a front direction is fixed to at least the vertical frames of the waterproof frame, and the second connecting member is fixed in a state of abutting against the first connecting member, thereby fixing the waterproof frame to the base frame;
A method for constructing a waterproof door frame comprising: In the second step, a first connecting member extending in a front direction is fixed to the upper frame of the base frame,
In the third step, a second connecting member extending in a front direction is fixed to the upper frame of the waterproof frame, and the second connecting member of the upper frame is fixed in a state of abutting against the first connecting member of the upper frame.
A method for installing a waterproof door frame according to claim 10. The third step is to fix a three-sided frame portion of the waterproof frame, which is composed of the upper frame and the left and right vertical frames, to the base frame,
Further, the step of installing the lower frame of the waterproof frame on a floor surface is included.
A method for installing a waterproof door frame according to any one of claims 10 and 11. The step of fixing the three-sided frame portion to the base frame includes:
Connecting the exterior side facing portion of the three-sided frame portion to the exterior side facing portion of the base frame;
Connecting the projection portion of the three-sided frame portion to the projection portion of the base frame,
A method for installing the waterproof door frame according to claim 12. The first connecting member is fixed to the projection portion of the base frame and includes a connected piece extending in the projection direction,
The second connecting member is fixed to the projection portion of the waterproof frame and includes a connecting piece extending in the projection direction,
In the third step, the connecting piece is abutted against the connected piece and fixed.
A method for installing a waterproof door frame according to any one of claims 10 to 13. The waterproof frame has a first prospective surface on the outdoor side and a second prospective surface on the indoor side located inside the opening with respect to the first prospective surface,
The indoor side portion of the first prospective surface and the outdoor side portion of the second prospective surface face each other, and a four-sided groove portion is formed from the indoor side portion, the outdoor side portion, and a prospective portion extending between the indoor side portion and the outdoor side portion, the four-sided groove portion being open toward the outdoor side and into which a watertight member is fitted;
The second connecting member fixed to at least the left and right vertical frames of the waterproof frame is fixed to the second projection surface, and a base end portion of the second connecting member abuts against the projection portion.
A method for installing a waterproof door frame according to claim 14. After the connecting piece and the connected piece are fixed, a decorative cover is provided between the indoor side portion of the projection portion of the three-sided frame portion of the waterproof frame and the indoor side facing portion of the base frame.
A method for installing a waterproof door according to any one of claims 14 and 15 (limited to a dependent claim of claim 12) . 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 12 to 16 (limited to a dependent claim of claim 12). 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 an upper frame, left and right vertical frames, and a lower frame,
A three-sided frame portion consisting of the upper frame and the left and right vertical frames of the waterproof frame is fixed to the base frame, and the lower frame of the waterproof frame is installed on a floor surface,
The outdoor facing portion of the three-sided frame portion of the waterproof frame is connected to the outdoor facing portion of the base frame,
The projection portion of the three-sided frame portion of the waterproof frame is connected to the projection portion of the base frame,
A connecting member having a connecting piece extending in the projection direction is fixed to the projection portion of the base frame and one of the projection portions of the three-sided frame portion,
The other of the projection portion of the base frame and the projection portion of the three-sided frame portion has a projection portion with which the connecting piece abuts,
The waterproof frame is fixed to the base frame by fixing the connecting piece and the front portion in abutting contact with each other.
Waterproof door frame.

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