JPS6115175Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a bay window that can be installed in a window opening in a building.The purpose of this invention is to provide a bay window that can be assembled and constructed with extremely labor-saving construction and has excellent ancillary properties. be.

Next, an embodiment of the present invention will be explained with reference to the drawing. In the drawing, S is a bay window, and this bay window S has a floor part 6, a sliding frame part 2, left and right side walls 12, and a roof part 22. It is more formed.

Reference numeral 3 denotes the upper frame of the sliding frame portion 2, and shoji grooves 3B, 3C and screen door grooves 3D are formed in the longitudinal direction of the lower surface of the sliding web 3A. Note that 3E is a screw receiver formed along the longitudinal direction of the upper frame 3.

4 is the lower frame of the sliding frame portion 2, and in its cross section, 4A is a sliding web, in which shoji webs 4B, 4C and screen door web 4D are formed in the shape of steps descending to the outdoor side; 4B, 4C, 4D
A rail 4E is provided. Further, a front edge 4F having a substantially Z-shaped cross section is formed on the outdoor side of the screen web 4D, and a dovetail groove 4G opening downward is formed at the stepped portion of the front edge 4F as shown in the drawing. In addition, an indoor edge 4 is provided at the indoor end of the sliding web 4A.
H is provided vertically, and a mounting piece 4J having a concave groove 4K facing toward the indoor side is formed at the upper end of the indoor edge 4H, and a projecting piece 4L toward the indoor side is formed near the upper end of the same edge 4H. A protruding groove 4M into which the floor plate 7 is inserted is formed. Further, on the lower end side of the indoor edge 4H, protrusions 4N and 4P are provided to protrude toward the indoor side, and a groove 4R into which the lower plate 9 is inserted is formed. Further, a lower edge 4T is horizontally provided between the lower end portions of the front edge 4F and the indoor edge 4H, and a hollow portion 4U is integrally formed therein. Note that 4V is a screw receiver formed along the longitudinal direction of the lower frame 4.

Reference numeral 5 denotes the left and right vertical frames of the sliding frame portion 2, which are formed in a symmetrical shape.To explain the vertical frame 5 on the right side of the figure, in its cross section, 5A represents the door stop wall of the sliding frame portion 2. The front vertical frame is provided vertically with an overhanging width corresponding to the overhanging width of the upper frame and the lower frame 4, and a side end 12 is provided at the indoor end thereof.
A side vertical frame portion 5B is provided, and both vertical frame portions 5A,
It is formed to have an L-shaped cross section with the main body being 5B.
In addition, partition plates 5C, 5D, and 5E are protruded from the left side (inner side) of the front vertical frame portion 5A, and an engaging piece 5F having a hook-shaped cross section in the diagram is provided at the outdoor end of the vertical frame portion 5A. is formed along its longitudinal direction. Further, on the indoor surface of the side vertical frame portion 5B, a mounting piece 5G having a substantially hook-shaped cross section and a protruding piece 5 that engages the holding frame 35 are provided.
H, 5J are formed along the longitudinal direction, and a locking piece 5K having a substantially hook-shaped cross section is formed along the longitudinal direction on a part of the outdoor surface of the side vertical frame portion 5B. It is formed.

Both ends of the upper frame 3, lower frame 4, and left and right vertical frames 5 thus formed are framed into a rectangular shape via screw receivers 3E and 4V to form a sliding frame portion 2, and the same A floor portion 6 is formed in the lower frame 4 of the frame portion 2.

Reference numeral 7 denotes a floor plate of the floor portion 6, which is formed into a flat plate having a predetermined space, and protective plates 8 made of a stainless steel plate, a synthetic resin plate, or the like are attached to the upper and lower surfaces thereof. The outer edge side of this floor plate 7 is fitted into a groove 4M formed in the lower frame 4 and fixed with a screw 50A via a mounting flat 4J. Further, below the floor plate 7, a lower plate 9 having a space slightly overhanging the space of the floor plate 7 in the left and right direction is inserted through the edge frame member 10 into the groove 4R of the lower frame 4.
At the same time, an exterior plate 11 made of a steel plate or the like is attached to the lower surface of the lower plate 9 along the entire lower surface of the lower plate 9 and fixed with screws 50B to the floor part 6.
is formed. Note that 11A is a mounting piece formed on the indoor side of the exterior plate 11.

Reference numeral 12 denotes the above-mentioned left and right side walls, which are framed by a side vertical frame portion 5B formed on the vertical frame 5 of the sliding frame portion 2, a side upper frame 13, a side lower frame 14, and an inner vertical frame 15. A transparent panel 16 made of a glass plate, a synthetic resin plate, or the like is fitted therewith.

Reference numeral 13 is the above-mentioned side upper frame, and in its cross section, 13A is a web, which is provided horizontally in the figure, and on both sides thereof is an outer edge 1 having a substantially hook-shaped cross section.
3B and the inner edge 13C are arranged facing upward to form a groove portion 13D. Also, the same web 13
On the lower surface of A, a protruding piece 13E having a substantially hook-shaped cross section as shown in the figure,
13F are arranged facing downward to form a groove 13G into which the panel 16 is fitted. Furthermore, a mounting portion 13H for mounting the lattice frame 20 is formed on the outside of the projection 13E as shown in the drawing.

Reference numeral 14 is the above-mentioned side lower frame, and its cross-sectional shape is formed into a rectangular shape as shown in the figure, integrally having a hollow portion 14E formed by an upper edge 14A, a lower edge 14B, an outer edge 14C, and an inner edge 14D. Protrusions 14F and 14G having a substantially hook-shaped cross section are provided opposite to the protrusions 13E and 13F of the upper frame 13.
A groove 14H into which the upper edge 14 is fitted is formed.
A mounting portion 14J corresponding to the mounting portion 13H of the side upper frame 13 is formed on the illustrated side of A. Further, the outer edge 14C extends downward to have a substantially hook-shaped cross section in the figure, and a mounting piece 14K to which the lower plate 9 is attached is formed.

15 is the above-mentioned inner vertical frame, and in its cross section, 15A is a web, and the web 15
An inner edge 15B and an outer edge 15C are provided on both sides of A, and the cross section is approximately C-shaped with a groove 15D, and vertical columns 52 are provided at the indoor ends of the inner and outer edges 15B and 15C.
Mounting pieces 15E and 15F to be installed along the outdoor surface of
is formed. Further, the web 15A includes a mounting piece 5G and a projecting piece 5 formed on the side vertical frame portion 5B.
A mounting piece 15G and protruding pieces 15H and 15J having the same cross-sectional shape are formed along the longitudinal direction corresponding to H and 5J, respectively. Further, attachment portions 13H, 14 of the upper and lower frames 13, 14 are provided on the outer side of the web 15A.
A mounting portion 15K corresponding to J is formed.

The side upper frame 13, the side lower frame 14, and the inner vertical frame 15 formed in this way have the illustrated cross section in which the side edge of the floorboard 7 is fitted along the inner surface of the protruding piece 14G of the side lower frame 14 prior to the frame. U-shaped mounting member 17
are fixed with screws 50C, and the vertical frame 5
A reinforcing metal fitting 18A having an approximately L-shaped cross section in the drawing is attached to the back side where the side lower frame 14 is attached, and a web 15A is attached to the attachment site of the side lower frame 14 on the back side of the inner vertical frame 15. Reinforcing metal fittings 18B shaped along edges 15B, 15C and attachment pieces 15E, 15F are attached, and side lower frame 14 is assembled between side vertical frame portion 5B and inner vertical frame 15 via attachment bolts 19, The side edge of the floorboard 7 is fitted into the mounting member 17, and the mounting piece 14K of the side lower frame 14 is fitted into the mounting member 17.
A lower plate 9, an exterior plate 11, and an edge frame member 10 are attached to. In addition, the vertical frame 5 and the inner vertical frame 15
There is also a reinforcing metal fitting 1 on the back side of the attachment part of the side upper frame 13.
8A and 18B are attached to the side upper frame 1.
3 is assembled via mounting bolts 19 in the same way as the lower frame 14. Note that the left side wall portion is also formed in the same way, and the mounting portions 13 of the left and right side wall portions 12 are also formed in the same manner.
A lattice frame body 20 is attached to H, 14J, and 15K via attachment pieces 5G and 15G. Further, an attachment member 21 is attached along the indoor edge of the floorboard 7.

Reference numeral 21 is the above-mentioned mounting member, which also serves as a drainer, and in its cross section, 21A is a vertically hanging piece, and mounting pieces 21B and 21C are formed at the upper end of the piece 21A, which extend horizontally in the inner and outer directions. has been done. In addition, a web 21D that extends horizontally toward the outdoors is provided at the lower end of the upper hanging piece 21A.
A groove portion 21E into which the floor plate 7 is inserted is formed between the groove portion 1C and the groove portion 21E. Further, a water section 21F is vertically provided at the outdoor end of the web 21D. Note that 21G is a screw receiver formed along the longitudinal direction of the mounting member 21. The indoor edge of the floorboard 7 is inserted into the groove 21E of the mounting member 21 formed in this way, and is fixed by screws 50D, and its left and right end surfaces are fixed to the inner vertical frame 15 via screw receivers 21G. has been done. Note that this mounting member 21 is provided with a water section 21F, but this water section 21F is useful when the lower plate 9 and the exterior material 11 are not attached.

In this way, the roof part 22 is attached to the upper side of the frame body consisting of the sliding frame part 2 and the left and right side walls 12 in the form of a closed lid, and when this roof part 22 is attached,
The outdoor side is an outdoor overhang part 22A that overhangs from the front surface of the sliding frame part 2 to the outdoor side with a predetermined overhang width as shown in the figure.
is formed. In this roof part 22, a roof plate 26 is placed slightly toward the outdoor side between a vertical wall plate 23 having attachment pieces 24A and 24B that serve as an attachment part on the indoor side, and a girder 25 that serves as an attachment part of the sliding frame part 2. It is fixed in a downwardly inclined manner, and a ceiling plate 27 is fixed to the lower side thereof with a protection plate 8 fixed to its lower surface. Further, a mounting member 28, which serves as a mounting portion for a shutter frame 38, for example, is fixed to the upper surface side of the ceiling plate 27, which becomes the illustrated outdoor projecting portion 22A. Further, the green frame member 10 is fixed to the upper surface side of the left and right side portions of the ceiling plate 27.

Reference numeral 29 is an upper exterior plate of the roof section 22, which is made by bending and forming a plate material such as steel material or stainless steel. It is formed in a downwardly inclined shape outward, and its outdoor end is bent downward to form a front edge 29B, and further folded back indoors to form a locking piece 29C. Further, the indoor edge of the web 29A is bent vertically upward to form a mounting piece 29D. The left and right edges of the web 29A are bent downward to form side pieces 29E, and further bent inward as shown in the figure to form locking pieces 29F.

Reference numeral 30 denotes outer plates on the outdoor side and left and right sides of the roof portion 22, which are made of extruded light alloy materials such as aluminum, and have a cross section of 30A.
is an edge piece and is provided vertically, and a mounting piece 30E that is attached to the ceiling plate 27 is formed at the lower end thereof. Further, the edge piece 30A extends downward from the joint with the attachment piece 30B, and is folded back toward the indoor side to form a decorative piece 30C having a generally L-shaped cross section and a decorative surface 30D. Further, the front edge 29B of the upper exterior plate 29 and the locking piece 29 are provided at the upper end of the edge piece 30A.
An engagement piece 30E having a substantially hook-shaped cross section is formed to abut and engage the side piece 29E and the locking piece 29F.

The upper exterior plate 29 formed in this manner is placed on the roof plate 29, and its mounting piece 29D is brought into contact with the vertical wall plate 23 in the overlapping manner shown in the figure and joined by spot welding or the like. 30 is attached along the outdoor edge and left and right side edges of the ceiling board 27 via the attachment piece 30B, and the engagement piece 30D is attached to the front edge 29B of the upper exterior plate 29 and the locking piece 2.
9C, the side piece 29E, and the locking piece 29F are abutted and engaged as shown. Note that the outer plate 30 and the upper exterior plate 29 may be connected by spot welding or the like. Further, on the lower surfaces of both left and right sides of the ceiling board 27, as shown in FIG.
A reinforcing frame 31 having a substantially C-shaped cross section is fixedly attached to the groove 13D formed in the groove 13D. Further, a mounting edge frame 32 having a substantially L-shaped cross section is fixed along the longitudinal direction of the lower surface of the ceiling board 27 on the indoor side via a mounting piece 24B, thereby forming the roof portion 22.

The roof section 22 formed in this way is placed on the sliding frame section 2 and the left and right side walls 12 using the reinforcing frames 31 attached to both the left and right sides of the ceiling board 27 as attachment standards, and is placed on the sliding frame section 2 and the left and right side walls 12. The upper frame 3 is fixed to the beam member 23 with mounting screws 51A, and the side wall portion 1
2 has its side upper frame 13 fixed to a reinforcing frame 31 with mounting bolts 33. Further, cover frames 34 are attached to the left and right vertical frames 5 of the sliding frame portion 2.

Reference numeral 34 denotes the cover frame described above, which is made of a shape extruded from a light alloy material such as aluminum. The cross-sectional shape of the cover frame is formed in a substantially L-shape such that an outdoor piece 34A that shields the lateral outdoor side of the vertical frame 5 and a side piece 34B that shields the lateral side correspond to the side vertical frame portion 5B and the front vertical frame portion 5A of the vertical frame 5.
At the end of the vertical frame 5, a protruding piece 3 is provided to engage with the engaging piece 5F of the vertical frame 5.
The cover frame 34 thus formed is formed with a mounting piece 34D which abuts against the outdoor surface of the vertical frame portion 5B in an overlapping manner and engages with the locking piece 5K at the indoor end of the side piece 34B.
The left and right side walls 12 are fitted with the panel 1 and secured by the screws 50E.
6 is attached via a retaining frame 35.

Next, the glass shoji 36 and the auxiliary shoji 37 installed on the sliding frame 2 will be explained. The two glass shoji 36 and the two auxiliary shoji 37 are installed in a sliding manner as shown in the figure, and the installation width of the auxiliary shoji 37 (width between the vertical frames) is the width of the installation of the glass shoji 36. It is formed into a frame assembly approximately half the width of the shoji, and a panel made of a glass plate, a synthetic resin plate, or a synthetic plate is fitted to the frame assembly to form a double shoji 36,
37, when the front surface of the window opening W is closed, the glass shoji 36, 36 are located in the center of the indoor sliding part, and the auxiliary shoji 37 is located on the left and right sides of the outdoor sliding part, and the window opening W is closed. The front is closed.

The bay window S formed in this way has a window opening W
It is integrally attached to the outdoor side of the

Next, a case will be described in which, for example, the shutter frame 38 is attached to the outdoor side of the bay window S configured as described above. When installing the shutter frame 38, the sliding frame part 2
The cover frame 34 attached to the left and right vertical frames 5 is removed and attached via the left and right vertical frames 5. This shutter frame 38 has a frame corresponding to the width of the frontage of the bay window S, and has a sliding portion 39 with a sliding length approximately equivalent to the installation width of two glass shojis 36, and an auxiliary support on both sides thereof. A door pocket 40 having a width approximately corresponding to the installed width of the shoji 37 is formed as shown in the figure. Note that since the shutter frame 38 is formed in a symmetrical shape, the right side in the figure will be described.

Reference numeral 41 denotes the upper frame of the shutter sliding part 39, and in its cross section, 41A is a sliding web which is provided horizontally and has an indoor piece 41B and a front edge 4 on its inner and outer edges.
1C are vertically arranged to form a sliding groove 41D. Moreover, a projecting piece 41E is provided on a part of the indoor piece 41B so as to protrude toward the indoor side. Further, on the inner and outer edges of the sliding web 41A, protrusions 4 of equal length are provided upward.
1F and 41F are located opposite each other.

42 is a lower frame of the shutter sliding part 39, which is attached along the lower frame 4 of the sliding frame part 2. In its cross section, 42A is a sliding web, and its inner and outer edges are A sliding groove 42D corresponding to the sliding groove 41D of the upper frame 41 is formed by placing the piece 42B and the front edge 42C on top. Further, at the upper end of the indoor piece 42B, a horizontal support piece 42E is formed which extends horizontally toward the indoor side and comes into contact with the lower surface of the dovetail groove 4G formed on the lower frame 4 of the sliding frame part 2. A locking piece 42F that engages with the groove 4G of the lower frame 4 is formed in a part of the piece 42E. Further, a lower support piece 42G is formed which is inclined downward toward the indoor side from the joint between the sliding web 42A and the indoor piece 42B and abuts on the front edge 4F of the lower frame 4, and at the end of the support piece 42. A mounting piece 42H having a substantially L-shaped cross section is formed along the front edge 4G of the lower frame 4 and along the lower edge 4T.

Reference numeral 43 denotes the upper frame of the door bag 40, and in its cross section, 43A is a web, which is connected to the upper frame 41 at the same level and has a projecting width sufficient to accommodate the two shutters 48. , its outdoor end has a leading edge 43B.
is installed vertically. In addition, a partition piece 43C is vertically provided on the lower surface of the web 43A near the outdoor end, forming a groove 43D into which the end plate 49 is attached, and a screw receiver 43E is provided along the longitudinal direction at the lower end of the partition piece 43C. It is formed. Also, web 43A
An indoor piece 43F and a protruding piece 43G corresponding to the indoor piece 41B and protruding piece 41E of the upper frame 41 are provided at the indoor end of the upper frame 41.
A protruding piece 43H corresponding to the protruding piece 41F of the upper frame 41 is provided on the upper surface side of the web 43A.

44 is a door bag lower frame of the door bag 40, and in its cross section, 44A is a web that is connected to the door bag upper frame 43.
The front edge 44B extends horizontally toward the outdoors in correspondence with the web 43A, and a front edge 44B is formed at the outer end of the front edge 44B.
Further, near the outdoor end of the web 44A, a projecting piece 44C having a screw receiver 44D at its tip is formed in correspondence with the partitioning piece 43C of the door bag upper frame 43.
In addition, an indoor piece 42 formed on the lower frame 42 is provided at the indoor end.
B, an upper support piece 44E with a cross-sectional shape corresponding to the horizontal support piece 42E and the locking piece 42F, and a mounting support piece 44F with a cross-section corresponding to the lower support piece 42G and attachment piece 42H formed on the lower frame 42 are integrated. It is formed.

Reference numeral 45 is a vertical frame at the bottom of the door pocket 40, which replaces the removed cover frame 34 and shields the sides of the left and right vertical frames 5 of the sliding frame portion 2, and forms a door stop wall of the door pocket 40. In the cross section, 45A is a web that shields the sides of the vertical frame 5 and covers the door bag upper and lower frames 4.
It is provided vertically with an overhang width corresponding to 3 and 44, and a front edge 45B is formed at its outdoor end. Furthermore, a sliding frame portion 2 is provided at the indoor end of the web 45A.
As shown in the figure, a mounting piece 45C is formed which overlaps and abuts on the side vertical frame portion 5B of the vertical frame 5 and engages with the locking piece 5K. Further, an engaging piece 5F of the vertical frame 5 is provided on the inner surface of the web 45A and extends to the left in the drawing.
A cover piece 4 that engages with and covers the outer surface of the side chamber of the vertical frame 5.
5D is integrally formed.

Reference numeral 46 denotes a vertical door frame, which forms a door stop wall on the door side of the door pocket 40, and is formed into a substantially L-shaped cross section in the drawing by a door stop web 46A and a front edge 46B.

The upper frame 41 formed in this way, the left and right door bag upper frames 43 and the lower frame 42, and the left and right door bag lower frames 44 are connected at the same level through connecting members 47, respectively, and the door bag upper frame 43 and door bag bottom frame 4
There are screw receivers 41E and 42D between the ends of 4, respectively.
The door end vertical frame 45 and the door vertical frame 46 are assembled together to form the shutter frame 38. The upper frame 41 and the door bag upper frame 43 of the storm door frame 38 formed in this manner are brought into contact with the lower surface of the outdoor projecting portion 22A of the roof portion 22 and fixed by the mounting screws 51B, and the lower frame 42 The lower frame 44 of the door bag is lowered with respect to the lower frame 4 of the sliding frame part 2 with its engagement piece 42F and upper support piece 44E engaged in the groove 4G, and via the attachment piece 42H and attachment support piece 44F. It is fixed to the lower edge 4T of the frame 4 with screws 50F. In addition, the door end vertical frame 45 side has its lid piece 45D.
is engaged with the engagement piece 5F of the vertical frame 5, and the attachment piece 45C is brought into contact with the side vertical frame portion 5B, and its tip is engaged with the locking piece 5K and fixed with the screw 50E. There is.

In this way, the shutters 48 installed in the shutter frame 38 attached to the front surface of the sliding frame portion 2 of the bay window S are formed to have approximately the same width as the installation width of the auxiliary shoji 37, and four shutters 48 are installed. As shown in FIG. 4, the front surface of the glass shoji 36, 36 is closed with four shutters 48. Note that 49 is a mirror plate attached to the outdoor side of the door pocket 40.

Next, the operation and effects of this embodiment configured as described above will be explained.

Now, the bay window S in this example has a sliding frame portion 2 which is the front portion.
The four circumferences of the side wall portion 12, which are the left and right side portions, are formed by frame members, that is, the upper frame 3, the lower frame 4, the left and right vertical frames 5, the side upper frame 13, the lower side frame 14, and the inner vertical frame 15. It is a bay window S, in which the left and right vertical frames 5 of the sliding frame part 2 are the front vertical frame part 5A which becomes the vertical frame part of the sliding frame part 2, and the side vertical frame part which becomes the vertical frame part of the side wall part 12. 5B, and the upper frame 3 and lower frame 4 of the sliding frame portion 2 and the side upper frame 13 and side lower frame 14 of the side wall portion 12 are formed on both vertical frames 5A and 5B, respectively. is screwed, and this screwed portion is shielded by the cover frame 34 or the door end vertical frame 45. Therefore,
Since the left and right vertical frames 5 are formed into a substantially L-shaped cross section consisting of the vertical frame portion 5A of the sliding frame portion 2 and the vertical frame portion 5B of the side wall portion 12, the upper frame 3, the lower frame 4, and the side upper frame 13, Since the lower side frame 14 is easy to assemble, the frame construction of the bay window S can be carried out extremely labor-savingly. Moreover, the screw-fastening portions of each frame member to the vertical frame 5 or auxiliary holes for screw-fastening are shielded by the cover frame 34 or the door end vertical frame 45 and are not exposed, so that the appearance can be improved. Further, since the cover frame 34 and the door end vertical frame 45 can be attached, it has many features such as being able to enhance its accessory as a bay window.

In this embodiment, the vertical frame 45 of the shutter frame 38 is attached instead of the cover frame 34, but the present invention is not limited to this, and for example, a structure may be adopted in which a surface lattice is attached.

Now, the present invention is a bay window formed by framing the front part and the left and right side parts with frame members, and the vertical frames on both sides of the sliding frame part which become the said side parts are the vertical frames of the sliding frame part. It is formed into a substantially L-shaped cross section consisting of a frame portion and a vertical frame portion of the side wall portion which becomes the side portion, and an upper frame and a lower frame of the front portion and side portion are respectively screwed to both the vertical frames, and By configuring this screw-fastening part to be shielded by the cover frame or the door end vertical frame, it becomes easy to assemble the upper and lower frames of the sliding frame part and the upper and lower frames of the side wall part, which greatly saves labor in constructing the frame of the bay window. In addition, the screw fixing portions or auxiliary holes for screw fixing of each frame member of the vertical frame are shielded by the cover frame or the door end vertical frame and are not exposed, so that the appearance can be improved. In addition, since the cover frame and the door end vertical frame can be attached, the accessory function as a bay window can be enhanced, so it is an extremely practical idea as a bay window.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Figure 1 is a partial plan cross-sectional view of a bay window, Figure 2 is a vertical cross-sectional view,
Figure 3 is a vertical sectional view taken along the - line in Figure 1, Figure 4 is a schematic plan sectional view of a bay window with a shutter frame attached, Figure 5 is a partially enlarged flat sectional view, and Figure 6 is the same as Figure 5. of-
FIG. 7 is a vertical cross-sectional view taken along the - line in FIG. 5. 2...Sliding frame portion, 3...Upper frame, 4...Lower frame, 5
... Vertical frame, 5A... Front vertical frame, 5B... Side vertical frame, 12... Side wall, 13... Side upper frame, 14
...Side lower frame, 34...Cover frame, 45...Door end vertical frame, S...Bay window.

Claims (1)

[Scope of utility model registration request] It is a bay window formed by framing the front part and both left and right sides with frame members, and the vertical frames on both sides of the sliding frame part forming the front part are connected to the vertical frame part of the sliding frame part and the side surface. The upper frame and the lower frame of the front and side parts are screwed to both vertical frames, respectively, and the screwed portions are formed into a substantially L-shaped cross section. A bay window characterized by having a configuration in which a cover frame or a door end vertical frame is used to screen the window.