JP7368958B2 - Door frame and door frame manufacturing method - Google Patents

Description

The present invention relates to a door frame and a method of manufacturing the door frame.

Door frames include so-called internal door frames and external door frames. An internal door frame is a door frame for a door body that opens and closes a building opening located indoors, and an external door frame is a door frame for a door body that opens and closes a building opening located between the outdoors and indoors. The latter has the characteristic of being exposed to rainwater.

When manufacturing a door frame, it is common to weld and fix the vertical frame and the bottom frame (kutsuzuri) through reinforcing material (commonly known as "cat material") and then paint it. When manufactured using a similar method, the part where the lower end of the vertical frame (usually made from a steel plate) and the end in the opening width direction of the lower frame (usually made from a stainless steel plate) come into contact with each other is made of a different material. Since the parts are in contact with each other, there is a risk of rust due to the influence of rainwater and dust.

If hot-dip galvanized steel sheets are used as the frame material, anti-corrosion measures are taken, but the plating layer at the welded parts will disappear due to the effects of welding heat generated when assembling the door frame. Sometimes. Further, since the door frame is painted after assembly, it is difficult to paint the door frame so that the paint gets into the gap where the vertical frame and the bottom frame contact each other.

Although Patent Document 1 discloses a connection structure between a vertical frame and a lower frame in an external door frame, there is no consideration given to rust prevention of the contact portion between the vertical frame and the lower frame.

JP2010-255367

An object of the present invention is to provide a door frame having a connecting structure of a vertical frame and a lower frame with improved rust prevention effect.

The technical means adopted by the present invention are:
In a door frame with a vertical frame and a bottom frame,
The vertical frame consists of an indoor side part with an indoor side expected surface, and an outdoor side part equipped with an outdoor side expected side,
The lower frame includes an indoor side portion having a horizontal indoor top surface portion, and an outdoor side portion having an outdoor top surface portion sloped downward toward the outdoor side,
A first connecting member having a first connecting side is fixed to either an end in the opening width direction of the indoor side portion of the lower frame or a lower end portion of the indoor side portion of the vertical frame. ,
A second connecting member having a second connecting side is fixed to a lower end portion of the outdoor side portion of the vertical frame,
The vertical frame and the lower frame are connected through the first connecting member and the second connecting member in a state where they are partially in contact with each other,
When the first connecting member is fixed to an end in the opening width direction of the indoor side portion of the lower frame, the first connecting side faces the lower end portion of the indoor side portion of the vertical frame. If they are connected by a fastening member in a contacting state and are fixed to the lower end portion of the indoor side portion of the vertical frame, the first connecting side is the opening width of the indoor side portion of the lower frame. It is connected with a fastening member in surface contact with the end of the direction,
The second connecting side is a door frame that is connected by a fastening member in a state where it is in surface contact with an end in the opening width direction of the outdoor side portion of the lower frame.
In one aspect, the vertical frame is made of steel, and the lower frame is made of stainless steel.
In one aspect, the first connecting member and the second connecting member are made of steel.
Note that the words "first connecting side " and "second connecting side" are used to identify the connecting side of the first connecting member and the connecting side of the second connecting member.
In one embodiment, the fastening member is a screw, but it may also be a member such as a rivet.

In one aspect, in the vertical frame, the lower end of the indoor side portion extends below the lower end of the outdoor side portion,
The edge in the opening width direction of the indoor side portion of the lower frame is in contact with or close to the outer surface of the indoor side prospective surface of the vertical frame,
In the lower frame, a widthwise end portion of the outdoor side portion extends further outward than a widthwise end portion of the indoor side portion,
The lower edge of the outdoor side portion of the vertical frame is in contact with the upper surface of the outdoor side upper surface portion of the lower frame,
The first connecting member is fixed to an end in the opening width direction of the indoor side portion of the lower frame, and the first connecting side is in surface contact with the lower end portion of the indoor side prospective surface of the vertical frame. It is connected with a fastening member in the state of
The second connecting member is fixed to the lower end of the outdoor facing surface of the vertical frame, and the second connecting side is fixed in surface contact with the upper surface of the outdoor upper surface of the lower frame. Connected by members.

In one aspect, the first connecting member is fixed to a lower surface of the indoor-side upper surface portion of the lower frame.
In one aspect, the indoor upper surface portion of the lower frame is formed from a plurality of layers of plate material, and the first connecting member is welded to the lower surface of the indoor upper surface portion.

In one aspect, in the lower frame, a groove portion opening toward the outdoors is formed between an outdoor end portion of the indoor-side upper surface portion and an indoor-side end portion of the outdoor-side upper surface portion; is fitted with airtight material,
A reinforcing member is provided within the lower frame,
The first connecting member is welded to the reinforcing member and the bottom wall (back surface of the bottom wall) of the groove.

The door frame manufacturing method adopted by the present invention is as follows:
providing a vertical frame made of steel, a lower frame made of stainless steel, and at least one connecting member having a fixed side and a connecting side;
fixing a fixed side of at least one connecting member to a lower end portion of the vertical frame;
painting at least a lower end portion of the vertical frame together with the at least one connecting member while the at least one connecting member is fixed;
After the painting step, the lower end portion of the vertical frame and the end of the lower frame in the opening width direction are brought into partial contact, and the connecting side of the at least one connecting member is connected to the end of the lower frame in the opening width direction. a step of connecting to the lower frame with a fixing member in a state of surface contact with the lower frame;
including.
Another door frame manufacturing method adopted by the present invention is as follows:
Prepare a steel vertical frame, a stainless steel bottom frame, and two connecting members with a fixed side and a connecting side.
fixing the fixed side of the first connecting member to the end of the lower frame in the opening width direction;
fixing the fixed side of the second connecting member to the lower end portion of the vertical frame;
painting at least a lower end portion of the vertical frame together with the second connecting member while the second connecting member is fixed;
After the painting step, the lower end of the vertical frame and the end of the lower frame in the opening width direction are brought into partial contact, and the connecting side of the second connecting member is brought into contact with the end of the lower frame in the opening width direction. Connecting to the lower frame with a fixing member in a state of surface contact, and connecting the connecting side of the first connecting member to the vertical frame with a fixing member in a state of surface contact with a lower end portion of the vertical frame. and,
including.

In the present invention, since the vertical frame and the lower frame that constitute the door frame are connected by a fastening member through the first connecting member and the second connecting member instead of by welding, when the frame material is a hot-dip galvanized steel plate. In addition, the plating layer of the hot-dip galvanized steel sheet does not disappear during assembly, and the vertical frame itself is painted before the vertical frame is connected to the bottom frame, and after painting, the bottom frame and fastening members are connected. By connecting them, it becomes possible to paint even the part where the vertical frame touches the lower frame (especially when the vertical frame and the lower frame are made of different materials), and the rust prevention effect can be improved.

FIG. 2 is a front view of an external door frame viewed from the outside. The connection structure of the vertical frame and the lower frame according to the first embodiment is shown, in which (A) is a partially omitted cross-sectional view of the door frame, and (B) is a partially omitted front view (interior) of the lower part of the door frame. The structure is shown by the dotted line). It is a figure which shows the connection structure of the lower end part of the door edge side vertical frame and one end of the opening width direction of a lower frame based on 1st Embodiment, (A) is a cross-sectional view, (B) is a front view, (C ) is a side view, and (D) is a longitudinal sectional view viewed from the inside to the outside. Note that the reinforcing member is not illustrated in FIGS. 3(A) and 3(B). It is a figure showing the lower frame and the 1st connection member concerning a 1st embodiment. It is a figure showing the door edge side vertical frame and the 2nd connection member concerning a 1st embodiment. It is a figure which shows the connection structure of the lower end part of the door edge side vertical frame and one end of the opening width direction of a lower frame based on 2nd Embodiment, (A) is a cross-sectional view, (B) is a front view, (C ) is a side view, and (D) is a longitudinal sectional view viewed from the inside to the outside. It is a figure which shows the lower frame and 1st connection member based on 2nd Embodiment. It is a figure which shows the connection structure of the lower end part of the door edge side vertical frame and one end of the opening width direction of a lower frame based on 3rd Embodiment, (A) is a cross-sectional view, (B) is a front view, (C ) is a side view, and (D) is a longitudinal sectional view viewed from the inside to the outside.

Embodiments of the present invention will be described in detail based on the drawings. FIG. 1 is a front view of an external door frame, which illustrates the door frame according to the present invention, as viewed from the outside. The door frame includes an upper frame 1 that extends horizontally, a lower frame (slip) 2 that extends horizontally, a door end side vertical frame 3 that extends vertically, and a door end side vertical frame 4 that extends vertically. It is a four-circle frame consisting of. The space surrounded by the four circumferential door frames is the opening, and the upper frame 1 and the lower frame 2 are elongated members extending in the width direction of the opening. The frame 4 is a long member extending in the height direction of the opening. The door end side vertical frame 4 of the door frame is provided with hinge receiving parts H at intervals in the height direction, and the door body (see Fig. (not shown) opens and closes the opening.

In the door frame according to this embodiment, the upper frame 1, the door end side vertical frame 3, and the door end side vertical frame 4 are made of steel plates, and the lower frame 2 is made of a stainless steel plate. Furthermore, hot-dip galvanized steel sheets are used as the frame material. In the door frame according to this embodiment, one end in the length direction of the upper frame 1 and the upper end of the door end side vertical frame 3, and the other end in the length direction of the upper frame 1 and the upper end of the door end side vertical frame 4 are welded. One end of the lower frame 2 in the length direction and the lower end of the door end side vertical frame 3, and the other end of the lower frame 2 in the length direction and the lower end of the door end side vertical frame 4 are fixed using screws S. Fixed. In one embodiment, the door frame is assembled in a factory into a four-circumferential frame shape and delivered to the site, and is made up of a three-sided frame consisting of an upper frame 1, a vertical frame 3 on the edge side, and a vertical frame 4 on the end side, and a lower frame 2. The lower frame 2 may be separately transported to the site and the lower frame 2 may be fixed to the three-sided frame at the site. The connection structure and connection process between the left and right vertical frames (the door end side vertical frame 3, the door end side vertical frame 4) and the bottom frame 2 will be described in detail later.

In this specification, "outdoor side" and "indoor side" do not necessarily mean "outdoors" or "indoors." That is, "outdoor side" and "indoor side" are used not only to actually be located "outdoors" and "indoors," but also to indicate a relative positional relationship. For example, in a member or part extending in the indoor-outdoor direction, the part closer to the outdoors is called the outdoor part, and the part closer to the indoors is called the indoor part.

[1] First Embodiment A door frame according to the first embodiment will be described. First, the configurations of the lower frame 2 and vertical frames 3 and 4 of the door frame will be described in detail. It should be noted that those skilled in the art will understand that the upper frame 1 normally includes an outdoor facing surface, an indoor facing surface, and a lower surface facing the building opening, and the structure of the upper frame 1 is not limited to the present invention. Since this is not the gist of this article, a detailed explanation will be omitted. It will be understood by those skilled in the art that conventional connection means (for example, welding) can be used to connect the upper frame 1 and the left and right vertical frames 3 and 4.

[1-1] Structure of the lower frame As shown in FIG. 4, the lower frame 2 has an outdoor facing surface 20, an indoor facing surface 21, and an upper surface portion facing the opening and extending in the width direction of the opening. The upper surface part is formed from an outdoor upper surface part 22 located on the outdoor side and an indoor upper surface part 23 located on the indoor side. The outdoor upper surface portion 22 is a sloped surface extending downwardly toward the outdoor side, and the indoor upper surface portion 23 is a horizontal surface. In this embodiment, the longitudinal edge 220 of the outdoor upper surface section 22 is located on the outer side of the longitudinal edge 230 of the indoor upper surface section 23 . Insertion holes 711 are formed at both ends of the outdoor-side upper surface portion 22 in the opening width direction.

The indoor side upper surface part 23 is located at a higher position than the outdoor side upper surface part 22, and there is a step between the rear end (indoor side end part) of the outdoor side upper surface part 22 and the front end (outdoor side end part) of the indoor side upper surface part 23. It has a shape and is connected via a groove 24. The groove 24 is formed of an indoor side portion of the outdoor side upper surface portion 22, a rising wall or bottom wall 25 rising from the indoor side end portion of the outdoor side upper surface portion 22, and an outdoor side portion of the indoor side upper surface portion 23. It is open to the outdoors. An airtight material (not shown) is inserted into the groove 24, and the lower end portion of the indoor facing surface of the door body (not shown) in the fully closed position is in close contact with the airtight material. .

A horizontal base 26 is formed at the lower end of the outdoor viewing surface 20. In the lower frame 2 according to this embodiment, the indoor side finding surface 21 does not extend to the lower end of the lower frame 2, and the bottom side 26 extends only to a part of the outdoor side portion of the lower frame 2. The lower frame 2 according to this embodiment is provided with a plurality of reinforcing members 5 at intervals in the length direction (opening width direction). The reinforcing member 5 has a horizontal bottom side 50 extending in the indoor-outdoor direction, and a rising side 51 rising vertically from the indoor end of the base 50, and has an L-shape in side view. is fixed (welded) to the bottom side 26 of the lower frame 2, and the upper end of the rising side 51 is fixed (welded) to the indoor side facing surface 21 of the lower frame 2. The reinforcing member 5 is made of steel, for example, and is welded to the stainless steel lower frame 2, but the welded part between the lower frame 2 and the reinforcing member 5 may not be exposed to the outside when the door frame is installed. None. Note that the cross-sectional shape of the lower frame 2 and the shape of the reinforcing member 5 are not limited to the illustrated embodiments.

In this embodiment, the lower frame 2 is composed of two elongated members extending in the opening width direction. The first member mainly forms the outdoor side portion of the lower frame 2, and the second member mainly forms the indoor side portion of the lower frame 2. The first member includes an outdoor side facing surface 20, a bottom side 26, an outdoor side upper surface part 22, a bottom wall 25 at the end of the outdoor side upper surface part 22, and a horizontal direction from the upper end of the bottom wall 25 toward the indoor side. and an indoor side extending upper side 27 extending in a shape. The second member includes an indoor facing surface 21, an indoor upper surface portion 23, and an outdoor folded portion 23A of the indoor upper surface portion 23.

The width dimension (length dimension) of the second member is shorter than the width dimension (length dimension) of the first member, except for the main part of the indoor side extending upper side 27. As shown in FIG. 4 , the longitudinal edge 220 of the outdoor upper surface section 22 is located outside the longitudinal edge 230 of the indoor upper surface section 23 . Both lengthwise edges of the indoor side extending upper side 27 of the first member include a first edge 270 and a second edge 271 located on the outside in the opening width direction with respect to the first edge 270. , the first edge 270 coincides with the longitudinal edge 230 of the indoor upper surface part 23 in plan view, and the second edge 271 coincides with the longitudinal edge of outdoor upper surface part 22 in plan view. 220. In the indoor side extending upper side 27, the edge of the narrow portion 27' extending outward from the first edge 270 serves as a second edge 271. That is, the indoor side extending upper side 27 consists of a main part that contacts the folded part 23A from below, and left and right narrow parts 27' extending from both ends of the main part in the opening width direction.

The first member and the second member forming the lower frame 2 are arranged such that the indoor side upper surface portion 23 of the second member is placed on the indoor side extending upper side 27 of the first member, and the indoor side upper surface portion 23 of the indoor side upper surface portion 23 is placed on the outdoor side portion (folded 23A) of the first member are welded in an overlapping state so as to protrude outward from the bottom wall 25 of the first member. The indoor side portion of the upper surface portion of the lower frame 2 according to this embodiment has a laminated structure made of a plurality of plate materials (indoor side upper surface portion 23, folded portion 23A, indoor side extended upper side 27).

[1-2] Vertical frame configuration [1-2-1] Door end side vertical frame As shown in Figure 5, the door end side vertical frame 3 has an outdoor side facing surface 30 and an indoor side facing surface 31. and a prospective surface facing the building opening, and the prospective surface is formed of an outdoor prospective surface 32 located on the outdoor side and an indoor prospective surface 33 located on the indoor side. The outdoor prospective surface 32 and the indoor prospective surface 33 are vertical surfaces extending in the height direction. As will be described in detail later, the lower end of the indoor side portion of the door end side vertical frame 3 extends below the lower end of the outdoor side portion. An insertion hole 611 is formed at the lower end of the indoor facing surface 33 of the vertical frame 3 .

The indoor prospect surface 33 is located inside (opening width direction) with respect to the outdoor prospect surface 32, and is located between the rear end (indoor end) of the outdoor prospect surface 32 and the front end (roof) of the indoor prospect surface 33. (outside end) via a stepped groove 34. The grooves 34 extend from the indoor side portion of the outdoor prospective surface 32, the outdoor side portion of the indoor prospective surface 33, and the indoor end of the outdoor prospective surface 32 toward the indoor prospective surface 33 in the direction of visibility. It is formed from an extending bottom wall 35 and is open toward the outdoors. An airtight material (not shown) is inserted into the concave groove 34, and the end of the indoor side facing surface of the door body (not shown) in the fully closed position is in close contact with the airtight material. It has become.

The outdoor side portion of the door end side vertical frame 3 further includes a first outward prospect side 36 extending from the outer end of the outdoor prospect surface 30 to face the outdoor prospect surface 32. The indoor side portion of the door end side vertical frame 3 further includes a second outward prospect side 38 extending from the outer end of the indoor side prospect surface 31 to face the indoor side prospect surface 33.

In this embodiment, the door end side vertical frame 3 is composed of two elongated members extending in the height direction. The first member mainly forms the outdoor side portion of the door end side vertical frame 3, and the second member mainly forms the indoor side portion of the door end side vertical frame 3. The first member includes the outdoor facing surface 30, the first outward facing side 36, the outdoor facing surface 32, the bottom wall 35 at the end of the outdoor facing surface 32, and the inner end of the bottom wall 35 ( and an expected indoor extension side 37 extending from the opening width direction toward the indoor side. The second member is made up of an indoor facing surface 31, a second outward facing side 38, an indoor facing surface 33, and an outdoor folded portion 33A of the indoor facing surface 33.

The lower end of the indoor side portion of the vertical frame 3 extends lower than the lower end of the outdoor side portion. More specifically, the lower end 310 of the indoor facing surface 31 of the second member, the lower end 380 of the second outer facing side 38, and the lower end 330 of the indoor facing surface 33 excluding the folded portion 33A are on the outdoor side. It is located below the lower end 300 of the viewing surface 30, the lower end 320 of the outdoor viewing surface 32, and the lower end 360 of the first outer viewing side 36. The lower end 331 of the outdoor portion (the portion including the folded portion 33A) of the indoor prospective surface 33 is located above the lower end of the outdoor portion. The lower end 370 of the indoor side extension side 37 of the first member coincides with the lower end 331 of the outdoor side portion of the indoor side prospective surface 33.

At the lower end of the vertical frame 3, the lower end 320 of the outdoor side prospecting surface 32 and the lower end 360 of the first outer prospecting side 36 are inclined to match the inclined surface of the outdoor side upper surface part 22 of the lower frame 2. The other lower edges are horizontal edges. The lower end 370 of the indoor side extension side 37 of the first member is located above the lower end 320 of the outdoor side side 32 and the lower end 360 of the first outer side 36, which are inclined edges. The vertical frame 3 is stacked such that the expected indoor extension side 37 of the first member is overlapped with the inner surface of the indoor facing surface 33 of the second member such that the folded portion 33A is located closer to the outdoor side than the bottom wall 35. It is assembled by welding.

[1-2-2] Door end side vertical frame As shown in Figure 2, the door end side vertical frame 3 and the door end side vertical frame 4 have a symmetrical shape in a cross-sectional view or a plan view. Except for this, the substantial shape is the same. The door end vertical frame 4 includes an outdoor facing surface 40, an indoor facing surface 41, and a facing surface facing the building opening, and the facing surface is an outdoor facing surface 42 located on the outdoor side. and an indoor-side prospective surface 43 located on the indoor side. The outdoor prospective surface 42 and the indoor prospective surface 43 are vertical surfaces extending in the height direction. Similar to the door end side vertical frame 3, the lower end of the indoor side portion of the door end side vertical frame 4 extends lower than the lower end of the outdoor side portion. An insertion hole (not shown) is formed at the lower end of the indoor side facing surface 43 of the door end side vertical frame 4.

The indoor prospective surface 43 is located inside the outdoor prospective surface 42, and has a rear end (indoor end) of the outdoor prospective surface 42 and a front end (outdoor end) of the indoor prospective surface 43. are connected via a stepped groove 44. The groove 44 includes an indoor side portion of the outdoor prospect surface 42, an outdoor portion of the indoor prospect surface 43, and a bottom extending in the direction from the indoor end of the outdoor prospect surface 42 to the indoor prospect surface 43. It is formed from a wall 45 and is open toward the outdoors. An airtight material (not shown) is inserted into the concave groove 44, and the door end side end of the indoor side facing surface of the door body (not shown) in the fully closed position is in close contact with the airtight material. It has become.

The outdoor side portion of the door end vertical frame 4 further includes a first outward prospect side 46 extending from the outer end of the outdoor prospect surface 40 to face the outdoor prospect surface 42. The indoor side portion of the door end side vertical frame 4 further includes a second outward prospect side 48 extending from the outer end of the indoor side prospect surface 41 to face the indoor side prospect surface 43.

In this embodiment, the door end side vertical frame 4 is composed of two elongated members extending in the height direction. The first member mainly forms the outdoor side portion of the door end side vertical frame 4, and the second member mainly forms the indoor side portion of the door end side vertical frame 4. The first member includes an outdoor facing surface 40, a first outward facing side 46, an outdoor facing surface 42, a bottom wall 45 at the end of the outdoor facing surface 42, and an inner end of the bottom wall 45 ( and an indoor side extension side 47 extending from the opening width direction toward the indoor side. The second member includes an indoor facing surface 41, a second outward facing side 48, an indoor facing surface 43, and an outdoor folded portion 43A of the indoor facing surface 43.

Regarding the assembly of the first member and the second member, the explanation of the door end side vertical frame 3 can be referred to. Although the structure of the lower end of the door end side vertical frame 4 is not shown, it has substantially the same structure as the lower end of the door end side vertical frame 3. It can be used.

[1-3] Connecting member [1-3-1] First connecting member A first connecting member 6 is fixed to both ends of the lower frame 2 in the length direction. The first connecting member 6 has an L-shape in side view from the fixed side 60 and the connecting side 61, and the connecting side 61 has a screw hole 610 formed therein. The first connecting member 6 is fixed to the lower frame 2 with the fixed side 60 being the horizontal side and the connecting side 61 being the vertical side. In this embodiment, the fixed sides 60 of the first connecting member 6 are fixed to the lower surface of the indoor side portion of the upper surface portion of the lower frame 2, and the connecting sides 61 are fixed at both lengthwise ends of the indoor side portion of the upper surface portion of the lower frame 2. It is located and hanging down.

As described above, the indoor side portion of the upper surface portion of the lower frame 2 has a laminated structure of the indoor side upper surface portion 23, the folded portion 23A, and the indoor side extending upper side 27, and the fixed side 60 of the first connecting member 6 is fixed to the lower surface of the indoor-side extending upper side 27, which is the lowest layer of plate material forming the indoor-side portion of the upper surface of the lower frame 2. Although the first connecting member 6 according to the present embodiment is made of steel, even if the fixed side 60 of the first connecting member 6 is welded to the lower surface of the indoor side portion of the upper surface of the lower frame 2 made of stainless steel, , welding will not affect the top surface of the indoor part.

[1-3-2] Second connecting member A second connecting member 7 is fixed to the lower end portions of the door end side vertical frame 3 and the door end side vertical frame 4, respectively. The second connecting member 7 has an L-shape in side view from the fixed side 70 and the connecting side 71, and the connecting side 71 has a screw hole 710 formed therein. The second connecting member 7 is fixed to the door end side vertical frame 3 and the door end side vertical frame 4 with the fixed side 70 being a vertical side and the connecting side 71 being an inclined side inclined with respect to the horizontal. In the present embodiment, the second connecting member 7 is the lower end of the outdoor prospective surface 32 of the outdoor side portion of the door end side vertical frame 3, and the lower end of the outdoor prospective surface 42 of the outdoor side portion of the door end side vertical frame 4. A fixed side 70 is fixed to the part, and a connecting side 71 is connected to the lower end of the outdoor side expected surface 32 of the outdoor side part of the door end side vertical frame 3 and the outdoor side expected side 42 of the outdoor side part of the door end side vertical frame 4. They are located at each of the lower ends and extend so as to protrude outward in the width direction of the opening. The connecting side 71 of the second connecting member 7 is perpendicular to the outdoor facing surface 32 of the door end side vertical frame 3 and the outdoor facing surface 42 of the door end side vertical frame 4, and is vertical to the door end side vertical frame 3. It extends in an inclined shape along the inclined lower end of the outdoor facing surface 32 of the frame 3 and the inclined lower end of the outdoor facing surface 42 of the door end side vertical frame 4, respectively.

The second connecting member 7 according to the present embodiment is made of steel, and the fixed side 70 of the second connecting member 7 is connected to the inner surface of the outdoor facing surface 32 of the steel door end side vertical frame 3 (inside the vertical frame 3). By welding to the lower end part and the lower end part of the inner surface (inside the vertical frame 4) of the outdoor facing surface 42 of the door end side vertical frame 4, the door end side vertical frame 3 and the door end side vertical frame 4 can be welded. Fixed.

[1-4] Connection structure of vertical frame and bottom frame [1-4-1] Connection structure of door end side vertical frame and bottom frame The connection structure of the door end side end of the lower frame 2 will be explained. In this embodiment, the lower end of the door-side vertical frame 3 and the door-end side end of the lower frame 2 are connected by a screw S via a first connecting member 6 and a second connecting member 7. This will be explained in detail below.

The lower end of the outdoor side part of the door edge side vertical frame 3 (the lower end 300 of the outdoor side facing surface 30, the lower end 320 of the outdoor side facing surface 32, the lower end 360 of the first outward facing side 36) is connected to the roof of the lower frame 2. It is in contact with the end of the outer upper surface portion 22 on the door tip side in the opening width direction. The lower end 320 of the outdoor side prospecting surface 32 and the lower end 360 of the first outer prospecting side 36 are inclined edges extending in an inclined shape, and are in contact with the upper surface of the outdoor side upper surface part 22 which is an inclined surface. The connecting side 71 of the second connecting member 7 has the same inclination as the outdoor upper surface portion 22 of the lower frame 2, and extends from the inner surface of the outdoor facing surface 32 of the door end side vertical frame 3 toward the outside in the opening width direction. ing.

The door edge side end of the outdoor upper surface part 22 of the lower frame 2 extends further outward in the opening width direction than the outdoor facing surface 32 of the door edge side vertical frame 3, and The connecting side 71 of the second connecting member 7 extending outward in the opening width direction from the lower end of the prospective surface 32 is in surface contact with the upper surface of the outdoor-side upper surface portion 22 of the lower frame 2 . At this time, the insertion hole 711 formed in the outdoor upper surface part 22 of the lower frame 2 and the screw hole 710 formed in the connection side 71 of the second connection member 7 are vertically aligned, and the screw S is inserted into the insertion hole from below. 711 and screwed into the screw hole 710, the door tip side end of the outdoor upper surface portion 22 of the lower frame 2 and the outdoor side end of the door tip side vertical frame 3 are connected via the second connecting member 7. The lower end portions of the surfaces 32 are connected.

On the outer surface of the lower end portion of the indoor side facing surface 33 of the door end side vertical frame 3 (the outer surface of the vertical frame 3), there is an edge 230 of the indoor side upper surface part 23 (including the folded part 23A) of the lower frame 2, and an edge 230 on the indoor side The first end edge 270 of the extended upper side 27 is in contact with it.

The indoor side facing surface 33 of the door end side vertical frame 3 extends downward beyond the indoor side upper surface part 23 of the lower frame 2 and the indoor side extended upper side 27, and extends downward beyond the indoor side upper surface part 23 of the lower frame 2. The connecting side 61 of the first connecting member 6 that hangs down from the edge 230 (the first end edge 270 of the indoor side extending upper side 27) is in surface contact with the outer surface of the indoor side facing surface 33 of the vertical frame 3. At this time, the insertion hole 611 formed in the indoor facing surface 33 of the vertical frame 3 and the screw hole 610 formed in the connecting side 61 of the first connecting member 6 are aligned in the left-right direction, and from the inside of the vertical frame 3 By inserting the screw S into the insertion hole 611 and screwing it into the screw hole 610, the door edge side end of the indoor side upper surface part 23 of the lower frame 2 and the door edge side vertical frame are connected via the first connecting member 6. The lower end portions of the indoor side prospective surfaces 33 of No. 3 are connected. In addition, in a state where the door end side end of the lower frame 2 and the lower end portion of the door end side vertical frame 3 are connected, the lower end 350 (see FIG. 5) of the bottom wall 35 of the door end side vertical frame 3 and the first member The lower end 370 of the indoor side extension side 37 and the lower end 331 of the outdoor side portion (part including the folded portion 33A) of the indoor side expected side 33 are the narrow portion 27' of the indoor side extension upper side 27 of the lower frame 2. (See Figure 2). Furthermore, the indoor side edge 321 (see FIG. 5) at the lower end of the outdoor facing surface 32 of the door end side vertical frame 3 is in contact with the bottom wall 25 of the lower frame 2 (see FIG. 3(D)).

[1-4-2] Connection structure between the door end side vertical frame and the bottom frame As shown in Fig. 2, the connection structure between the bottom end of the door end side vertical frame 4 and the door end side end of the bottom frame 2 is bilaterally symmetrical. Except for this point, it is the same as the connection structure between the lower end of the door end side vertical frame 3 and the door end side end of the bottom frame 2, and the explanation about the connection structure between the door end side vertical frame and the bottom frame is referred to. be able to.

[1-5] Connecting process of vertical frame and bottom frame The process of connecting the door end side vertical frame 3, the door end side vertical frame 4, and the bottom frame 2 will be explained. A door end side vertical frame 3 and a door end side vertical frame 4 made of steel, a lower frame 2 made of stainless steel, a first connecting member 6 including a fixed side 60 and a connecting side 61, a fixed side 70 and a connecting side 71 A second connecting member 7 is prepared. In this embodiment, the first connecting member 6 and the second connecting member 7 are made of steel. The process of connecting the door end side vertical frame 3 and the bottom frame 2 will be described below, but this explanation can be used to explain the process of connecting the door end side vertical frame 4 and the bottom frame 2.

The fixed side 60 of the first connecting member 6 is fixed to one end of the lower frame 2 in the opening width direction (the end on the door tip side). More specifically, at the door end side end of the lower frame 2, the fixed side 60 of the first connecting member 6 is welded to the lower surface of the indoor side portion of the upper surface portion. In this embodiment, the indoor side part of the upper surface part of the lower frame 2 has a laminated structure of the indoor side upper surface part 23, the folded part 23A, and the indoor side extending upper side 27, and the fixed side 60 of the first connecting member 6 is welded to the lower surface of the indoor-side extending upper side 27, which is the lowest layer of plate material forming the indoor-side portion of the upper surface of the lower frame 2. Although the first connecting member 6 according to the present embodiment is made of steel, even if the fixed side 60 of the first connecting member 6 is welded to the lower surface of the indoor side portion of the upper surface of the lower frame 2 made of stainless steel, , welding will not affect the top surface of the indoor part.

The fixed side 70 of the second connecting member 7 is fixed to the lower end portion of the door end side vertical frame 3. More specifically, the fixed side 70 of the second connecting member 7 is welded to the inner surface of the lower end portion of the outdoor facing surface 32 of the door end side vertical frame 3. Next, at least the lower end portion of the door end side vertical frame 3 is painted together with the second connecting member 7 while the second connecting member 7 is fixed. The order of the fixing process of the first connecting member 6 and the fixing process of the second connecting member 7 does not matter.

After the painting process, the lower end portion of the door edge side vertical frame 3 and the end portion of the lower frame 2 in the opening width direction are brought into partial contact. Specifically, the lower end of the outdoor portion of the door end vertical frame 3 (the lower end 300 of the outdoor facing surface 30, the outdoor facing surface 32 The lower end 320 and the lower end 360 of the first outward prospective side 36) are brought into contact with the outer surface of the lower end portion (the outer surface of the vertical frame 3) of the indoor side prospective surface 33 of the door end side vertical frame 3. The end edge 230 of the indoor-side upper surface portion 23 (including the folded portion 23A) and the first end edge 270 of the indoor-side extended upper side 27 are brought into contact. The connecting side 71 of the second connecting member 7 is connected to the lower frame 2 by the screw S with the connecting side 71 of the lower frame 2 in surface contact with the door end side end of the outdoor side upper surface part 22, and the connecting side of the first connecting member 6 is connected to the lower frame 2 with the screw S. 61 is connected to the door end side vertical frame 3 with a screw S in a state where it is brought into surface contact with the lower end portion of the indoor side prospective surface 33 of the door end side vertical frame 3. After the door frame 1 is assembled, the whole is painted and sealed.

In the assembly process according to this embodiment, before the door end side vertical frame 3 and the door end side vertical frame 4 are connected to the bottom frame 2, the vertical frame alone (including the second connecting member 7) is painted. After painting, it is connected to the lower frame 2 with screws S. By this, it becomes possible to paint even the parts where the door end side vertical frame 3 and the door end side vertical frame 4 touch the lower frame 2, and also, the door end side vertical frame 3 and the door end side vertical frame 4, Since it is connected to the lower frame 2 by screws S instead of welding, the plating layer of the hot-dip galvanized steel sheet does not disappear during assembly. Furthermore, by performing a sealing treatment after assembling the door frame, the rust prevention effect and water stoppage effect are further improved.

[2] Second Embodiment A door frame according to a second embodiment will be described. Components similar to those in the first embodiment are given the same reference numerals, and for explanations of the components given the same reference numerals, the above description can be cited. Specifically, in the second embodiment, the description in the first embodiment can be used for the configuration of the vertical frames 3 and 4 and the configuration of the second connecting member 7.

[2-1] Configuration of the lower frame As shown in FIG. 7, the lower frame 2 has an outdoor side viewing surface 20, an indoor side viewing surface 21, and an upper surface portion facing the opening and extending in the width direction of the opening. The upper surface part is formed from an outdoor upper surface part 22 located on the outdoor side and an indoor upper surface part 23 located on the indoor side. The outdoor upper surface portion 22 is a sloped surface extending downwardly toward the outdoor side, and the indoor upper surface portion 23 is a horizontal surface. In this embodiment, the longitudinal edge 220 of the outdoor upper surface section 22 is located on the outer side of the longitudinal edge 230 of the indoor upper surface section 23 . Insertion holes 711 are formed at both ends of the outdoor-side upper surface portion 22 in the opening width direction.

The indoor side upper surface part 23 is located at a higher position than the outdoor side upper surface part 22, and there is a step between the rear end (indoor side end part) of the outdoor side upper surface part 22 and the front end (outdoor side end part) of the indoor side upper surface part 23. It has a shape and is connected via a groove 24. The groove 24 is formed of an indoor side portion of the outdoor side upper surface portion 22, a bottom wall 25 rising from the indoor side end portion of the outdoor side upper surface portion 22, and an outdoor side portion of the indoor side upper surface portion 23, It opens towards the outdoors. An airtight material (not shown) is inserted into the groove 24, and the lower end portion of the indoor facing surface of the door body (not shown) in the fully closed position is in close contact with the airtight material. .

A horizontal base 26 is formed at the lower end of the outdoor viewing surface 20. In the lower frame 2 according to this embodiment, the indoor side finding surface 21 does not extend to the lower end of the lower frame 2, and the bottom side 26 extends only to a part of the outdoor side portion of the lower frame 2. The lower frame 2 according to this embodiment is provided with a plurality of reinforcing members 5 at intervals in the length direction (opening width direction). The reinforcing member 5 has a horizontal bottom side 50 extending in the indoor-outdoor direction, and a rising side 51 rising vertically from the indoor end of the base 50, and has an L-shape in side view. is fixed (welded) to the bottom side 26 of the lower frame 2, and the upper end of the rising side 51 is fixed (welded) to the indoor side facing surface 21 of the lower frame 2. In this embodiment, two of the plurality of reinforcing members 5 are provided on both sides of the lower frame 2 in the length direction. In the illustrated embodiment, the edges of the reinforcing members 5 located on both sides of the lower frame 2 in the length direction are provided so as to coincide with the edges 230 of the indoor upper surface part 23 in the length direction. , but not limited to. The reinforcing member 5 is made of steel, for example, and is welded to the stainless steel lower frame 2, but the welded part between the lower frame 2 and the reinforcing member 5 may not be exposed to the outside when the door frame is installed. None. Note that the cross-sectional shape of the lower frame 2 and the shape of the reinforcing member 5 are not limited to the illustrated embodiments.

[2-2] First connecting member 8 is fixed to both ends of the lower frame 2 in the length direction. The first connecting member 8 is formed from three sides extending perpendicularly to each other, that is, a first fixed side 80, a second fixed side 81, and a connecting side 82. The connecting side 82 has a screw hole 820. is formed. In this embodiment, the first connecting member 8 is fixed to the lower frame 2 in such a manner that the first fixed side 80 is the horizontal side, and the second fixed side 81 and the connecting side 82 are the vertical sides. Specifically, the first fixed side 80 is welded to the bottom side 50 of the reinforcing member 5, the second fixed side 81 is welded to the back surface of the bottom wall 25, and the upper end of the first connecting member 8 and the bottom side of the lower frame 2 are welded. The lower surfaces of the indoor upper surface portion 23 are spaced apart.

Although the first connecting member 8 according to the present embodiment is made of steel, even if the first fixed side 80 of the first connecting member 8 is welded to the bottom side 50 of the reinforcing member 5 made of stainless steel, welding is easy. Even if the second fixed side 81 is welded to the back surface of the bottom wall 25 without affecting the upper surface of the inner part, the groove 24 is filled with the airtight material, so that the bottom wall 25 The surface will not be exposed to the outside, and welding will not affect the top surface of the indoor part.

[2-3] Connection structure between vertical frame and lower frame The connection structure between the lower end of the door end side vertical frame 3 and the door end side end of the lower frame 2 will be described with reference to FIG. The connection structure between the lower end of the door end side vertical frame 4 and the door end side end of the lower frame 2 is symmetrical, except that the lower end of the door end side vertical frame 3 and the door end side end of the lower frame 2 are symmetrical. It is the same as the connection structure of , and the explanation about the connection structure of the door edge side vertical frame and the bottom frame can be referred to. The description of the first embodiment can also be used for the process of connecting the vertical frame and the lower frame.

The lower end of the outdoor side portion of the door end side vertical frame 3 is in contact with the door end side end portion of the outdoor side upper surface portion 22 of the lower frame 2. The connecting side 71 of the second connecting member 7 has the same inclination as the outdoor upper surface portion 22 of the lower frame 2, and extends from the inner surface of the outdoor facing surface 32 of the door end side vertical frame 3 toward the outside in the opening width direction. ing. The door edge side end of the outdoor upper surface part 22 of the lower frame 2 extends further outward in the opening width direction than the outdoor facing surface 32 of the door edge side vertical frame 3, and The connecting side 71 of the second connecting member 7 extending outward in the opening width direction from the lower end of the prospective surface 32 is in surface contact with the upper surface of the outdoor-side upper surface portion 22 of the lower frame 2 . At this time, the insertion hole 711 formed in the outdoor upper surface part 22 of the lower frame 2 and the screw hole 710 formed in the connection side 71 of the second connection member 7 are vertically aligned, and the screw S is inserted into the insertion hole from below. 711 and screwed into the screw hole 710, the door tip side end of the outdoor upper surface portion 22 of the lower frame 2 and the outdoor side end of the door tip side vertical frame 3 are connected via the second connecting member 7. The lower end portions of the surfaces 32 are connected.

The edge 230 of the indoor upper surface portion 23 of the lower frame 2 is in contact with the outer surface of the lower end portion of the indoor side prospective surface 33 of the door end side vertical frame 3 (the outer surface of the vertical frame 3). The indoor side facing surface 33 of the door end side vertical frame 3 extends downward beyond the indoor side upper surface part 23 of the lower frame 2 and is located directly below the edge 230 of the indoor side upper surface part 23 of the lower frame 2. The connecting side 82 of the first connecting member 8 is in surface contact with the outer surface of the indoor side facing surface 33 of the vertical frame 3. At this time, the insertion hole 611 formed in the indoor side facing surface 33 of the vertical frame 3 and the screw hole 820 formed in the connecting side 82 of the first connecting member 8 are aligned in the left-right direction, and from the inside of the vertical frame 3 By inserting the screw S into the insertion hole 611 and screwing it into the screw hole 820, the door edge side end of the indoor upper surface part 23 of the lower frame 2 and the door edge side vertical frame are connected via the first connecting member 8. The lower end portions of the indoor side prospective surfaces 33 of No. 3 are connected.

[3] Third Embodiment A door frame according to a third embodiment will be explained. Components similar to those in the first embodiment are given the same reference numerals, and for explanations of the components given the same reference numerals, the above description can be cited. Specifically, in the second embodiment, the description in the first embodiment can be used for the configuration of the vertical frames 3 and 4 and the configuration of the second connecting member 7.

As shown in FIG. 8, the cross-sectional shape of the lower frame 2 according to the third embodiment is approximately the same as that of the lower frame 2 according to the first embodiment, but both longitudinal ends of the indoor upper surface part 23 are An extending surface 23' extending outward in the opening width direction is formed. When assembling the door end side end of the lower frame 2 and the door end side vertical frame 3, the door end side extension surface 23' of the indoor side upper surface part 23 of the lower frame 2 is connected to the indoor side of the door end side vertical frame 3. It extends beyond the expected surface 33 to the outside in the width direction of the opening, and the lower end of the indoor side portion of the vertical frame 3 on the door end side comes into contact with the extending surface 23'. An insertion hole (not shown) for passing a screw or screw is formed in the extending surface 23'.

A first connecting member 9 is fixed to the inner surface of the lower end portion of the indoor side facing surface 33 of the door end side vertical frame 3. The first connecting member 9 has a fixed side 90 and a connecting side 91 in an L shape when viewed from the side, and the connecting side 91 has a screw hole (not shown) formed therein. The first connecting member 9 is welded to the inner surface of the lower end portion of the indoor side facing surface 33 of the door end side vertical frame 3, with the fixed side 90 being the vertical side and the connecting side 91 being the horizontal side. In this embodiment, the expected indoor extension side 37 of the first member forming the outdoor portion of the door end side vertical frame 3 is fixed to the inner surface of the indoor side expected surface 33; By partially cutting out 37, the fixed side 90 of the first connecting member 9 is fixed to the indoor facing surface 33.

The door end side end of the indoor side upper surface part 23 of the lower frame 2 is an extension surface 23' that extends outward in the opening width direction from the indoor side prospective surface 33 of the door end side vertical frame 3, and the door end side The connecting side 91 of the first connecting member 9 extending from the lower end of the indoor side facing surface 33 of the vertical frame 3 to the outside in the opening width direction is in surface contact with the upper surface of the extending surface 23' of the indoor side upper surface part 23 of the lower frame 2. ing. At this time, the insertion hole (not shown) formed in the outdoor upper surface part 22 of the lower frame 2 and the screw hole (not shown) formed in the connecting side 91 of the first connecting member 9 are aligned in the vertical direction. , by inserting the screw S into the insertion hole from below and screwing it into the screw hole, the door tip side end of the indoor side upper surface part 23 of the lower frame 2 and the door tip side vertical part are connected via the first connecting member 9. The lower end portions of the indoor facing surfaces 33 of the frame 3 are connected. In addition, when the door end side end of the lower frame 2 and the lower end portion of the door end side vertical frame 3 are connected, the lower end of the bottom wall 35 of the door end side vertical frame 3 is connected to the indoor side upper surface portion 23 of the lower frame 2. (See FIG. 8(A)).

2 Lower frame 22 Outdoor upper surface 23 Indoor upper surface 230 Lengthwise edge groove 24 of indoor upper surface 23
Bottom wall 25
3 Door edge side vertical frame 32 Outdoor side prospective surface 33 Indoor side prospective surface 300, 320, 360 Lower edge 5 Reinforcing member 6 First connecting member 60 Fixed side 61 Connecting side 7 Second connecting member 71 Connecting side 70 Fixed side 8th 1 connecting member 80 1st fixed side 81 2nd fixed side 82 connecting side 9 1st connecting member 90 fixed side 91 connecting side S screw

Claims (5)

In a door frame with a vertical frame and a bottom frame,
The vertical frame consists of an indoor side part with an indoor side expected surface, and an outdoor side part equipped with an outdoor side expected side,
The lower frame includes an indoor side portion having a horizontal indoor top surface portion, and an outdoor side portion having an outdoor top surface portion sloped downward toward the outdoor side,
In the vertical frame, the lower end of the indoor side portion extends below the lower end of the outdoor side portion, and an opening of the indoor side portion of the lower frame is provided on the outer surface of the indoor side prospective surface of the vertical frame. The edges in the width direction are in contact with or close to each other,

In the lower frame, the widthwise end portion of the outdoor side portion extends further outward than the widthwise end portion of the indoor side portion, and the vertical frame is provided on the upper surface of the outdoor side upper surface portion of the lower frame. The lower edge of the outdoor side portion of is in contact with the
The indoor side of the lower frameTop partofon the bottomA first connecting member having a first connecting side is fixed to an end in the width direction of the opening, and the first connecting side is connected to the indoor side of the vertical frame.Prospectsin surface contact with the lower end ofscreware connected by
the outdoor side of the vertical frameInside the prospectA second connecting member having a second connecting side is fixed to a lower end portion of the lower frame, and the second connecting side is connected to the outdoor side of the lower frame.on the top of the top sectionWhile in surface contact with the edge in the width direction of the openingscrewconnected withThere is,
door frame. In a door frame with a vertical frame and a bottom frame,
The vertical frame consists of an indoor side part with an indoor side expected surface, and an outdoor side part equipped with an outdoor side expected side,
The lower frame includes an indoor side portion having a horizontal indoor upper surface portion and an outdoor side portion having an outdoor upper surface portion sloped downward toward the outdoor side. The inner upper surface part is formed from multiple layers of plate materials ,
A first connecting member having a first connecting side is welded to an end in the opening width direction of the lower surface of the indoor-side upper surface portion of the lower frame;
A second connecting member having a second connecting side is fixed to a lower end portion of the outdoor side portion of the vertical frame,
The vertical frame and the lower frame are connected through the first connecting member and the second connecting member in a state where they are partially in contact with each other,
The first connecting side is connected to the lower end portion of the indoor side portion of the vertical frame by a fastening member while being in surface contact with the lower end portion of the indoor side portion of the vertical frame,
The second connecting side is connected to the end of the outdoor side portion of the lower frame in the opening width direction by a fastening member while being in surface contact with the end in the opening width direction.
door frame. In a door frame with a vertical frame and a bottom frame,
The vertical frame consists of an indoor side part with an indoor side expected surface, and an outdoor side part equipped with an outdoor side expected side,
The lower frame includes an indoor side portion having a horizontal indoor upper surface portion and an outdoor side portion having an outdoor upper surface portion sloped downward toward the outdoor side, and in the lower frame, the above-mentioned A groove portion opening toward the outdoors is formed between the outdoor end portion of the indoor upper surface portion and the indoor end portion of the outdoor upper surface portion, and an airtight material is attached to the groove portion. and a reinforcing member is provided within the lower frame,
A first connecting member having a first connecting side is welded to the reinforcing member and the bottom wall of the groove at the end in the opening width direction of the indoor side portion of the lower frame,
A second connecting member having a second connecting side is fixed to a lower end portion of the outdoor side portion of the vertical frame,
The vertical frame and the lower frame are connected through the first connecting member and the second connecting member in a state where they are partially in contact with each other,
The first connecting side is connected to the lower end portion of the indoor side portion of the vertical frame by a fastening member while being in surface contact with the lower end portion of the indoor side portion of the vertical frame,
The second connecting side is connected to the end of the outdoor side portion of the lower frame in the opening width direction by a fastening member while being in surface contact with the end in the opening width direction.
door frame. In the vertical frame, the lower end of the indoor side portion extends below the lower end of the outdoor side portion,
The edge in the opening width direction of the indoor side portion of the lower frame is in contact with or close to the outer surface of the indoor side prospective surface of the vertical frame,
In the lower frame, a widthwise end portion of the outdoor side portion extends further outward than a widthwise end portion of the indoor side portion,
The lower edge of the outdoor side portion of the vertical frame is in contact with the upper surface of the outdoor side upper surface portion of the lower frame,
The first connecting member is fixed to an end in the opening width direction of the indoor side portion of the lower frame, and the first connecting side is in surface contact with the lower end portion of the indoor side prospective surface of the vertical frame. It is connected with a fastening member in the state of
The second connecting member is fixed to the lower end of the outdoor facing surface of the vertical frame, and the second connecting side is fixed in surface contact with the upper surface of the outdoor upper surface of the lower frame. connected by parts,
The door frame according to any one of claims 2 and 3 . The door frame according to any one of claims 1 to 4 , wherein the vertical frame is made of steel and the lower frame is made of stainless steel.

Images