JPH11131913A - Window frame body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by inserting two insert pieces protruded in connecting members to cross with each other at right angles, into insertion holes of the end faces of respective vertical and horizontal frame members, and connecting the frame member ends. SOLUTION: On constructing this window frame body, one insert piece provided in a connecting member J1 is inserted in an insertion hole formed on the end face of a vertical frame member A and an elastic tongue and a fixing projection provided in the insert piece are fixed in the insertion hole and firmly and temporarily assembled. Then, a screw inserted in the connecting member J1 is screwed in the frame member A to connect the connecting member J1 and the frame member A. The lateral member B and the connecting member J1 are connected to each other in the same way and then, the rest connection parts are connected through connecting members J1 , J2 to form a square window frame body. In this time, lacking parts at the corners of the square frame body formed by flange plates 3, 4 of the frame members A, B are covered with connecting pieces 17 provided at one end of the connecting members J1 , J2 . Then, the window frame body is fitted in the window opening of a building and the flange plates 3, 4 are fixed to a building with screws or the like. In this way, the frame body can be accurately positioned and rapidly can be installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window frame fitted inside a window opening provided on an outer wall of a building.

[0002]

2. Description of the Related Art As shown in FIG. 19, a window frame is fitted inside a window opening provided on a wall of a building.
It is a building member used to fit a sash frame or the like into the end on the outer wall side. As a conventional window frame F ′, FIG.
The window frame F ′ is formed by assembling a pair of vertical frame members A and a pair of horizontal frame members B into a rectangular frame.
The corners are fixed via screws S. When assembling the frame members A and B using the screws S, it is necessary to screw a large number of screws S in a state where the frame members A and B are correctly positioned, and this positioning is difficult. , Troublesome,
Moreover, it was a time-consuming operation.

Each of the frame members A and B is formed of, for example, a resin such as vinyl chloride. Flange plates 3 and 4 are provided at one end of the main plates 1 and 2 in the width direction, respectively. It is provided. The flange plates 3 and 4 are portions for decorating the periphery of the window opening and fixing the frame members A and B themselves to the wall surface. For this reason, in order to form the window frame body F ′ using the pair of vertical frame members A and the pair of horizontal frame members B, the portions of the main body plates 1 and 2 need to be formed in a rectangular frame shape. At the same time, the portions of the flange plates 3 and 4 arranged on the indoor side in the assembled state need to be formed in a rectangular frame shape. For this reason, as shown by the two-dot chain line in FIG. 20, the upper and lower ends of the main body plate 1 of each vertical frame member A are moved by a predetermined length (the length corresponding to the width of the flange plate 4 of the horizontal frame member B). It is indispensable to cut out in advance, and the man-hour for forming the window frame is large.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned disadvantages of the conventional window frame, and provides a window frame which can be quickly assembled and constructed at a construction site without positioning each frame material. Is an issue.

[0005]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems is based on a state in which a pair of vertical frame members, a pair of horizontal frame members, and these vertical and horizontal frame members are arranged in a rectangular frame shape. A window frame body composed of four connecting members for connecting the ends of adjacent vertical and horizontal frame members, wherein the rod-shaped connecting member main bodies constituting the connecting members are orthogonal to each other. A plurality of insertion pieces are respectively projected in two directions, and insertion holes into which the insertion pieces of the connection material are inserted are provided in end faces of the vertical and horizontal frame members, and the connection members are orthogonal to each other. The insertion pieces projecting toward the two directions are inserted into the insertion holes on the end faces of the adjacent vertical and horizontal frame members, respectively, and the end portions of the vertical and horizontal frame members arranged in a square frame shape are inserted. It is characterized in that the connecting portion is connected via the connecting material.

[0006] A pair of vertical frame members and a pair of horizontal frame members are arranged in a rectangular frame shape, and connecting members are arranged at ends of adjacent vertical and horizontal frame members, respectively. Do 2
When each insertion piece protruding toward the direction is inserted into the insertion hole provided on the end face of each of the vertically and horizontally adjacent frame materials, each of the vertically and horizontally adjacent frame materials orthogonal to each other via the connecting material. And a pair of vertical frame members and a pair of horizontal frame members are assembled in a rectangular frame shape via four connecting members.

In the case of concrete construction, one of two types of insertion pieces projecting in two directions perpendicular to each other to the connecting material is connected to one of the vertical and horizontal frame materials connecting each other. Insert into the insertion hole provided in the end face of one of the frame materials, and temporarily assemble the one frame material and the connecting material,
The one frame member and the connecting member are fixed via screws. After that, the other insertion piece protruding from the connecting member is inserted into the insertion hole at the end face of the other frame member, and the other frame member and the connecting member are temporarily assembled, and the other frame member is And the connecting member are fixed via screws. As a result, the vertically and horizontally adjacent frame members that are orthogonal to each other and adjacent to each other are integrally connected to the connecting member via a number of screws. When this operation is sequentially repeated for each connection portion, the pair of vertical frame members and the pair of horizontal frame members are integrally connected in a rectangular frame shape via four connecting members and a number of screws, A predetermined window frame is obtained. In this way, only by inserting the insertion piece of the connection material into the insertion hole of the frame material, the frame material and the connection material are aligned and there is no need to cut out the frame material, so the window frame body can be quickly assembled. Can be constructed.

[0008] When elastic tongues are provided at both ends in a direction perpendicular to the insertion direction of the insertion piece projecting from the connecting member, the insertion piece is inserted into insertion holes of each of the vertical and horizontal frame members. In the above, since the elastic tongue elastically contacts the inner wall surface along the thickness direction of the frame material in the insertion hole, the temporary assembling strength of the frame material with the connecting material is increased, and the frame material and the connecting material with screws are used. Can be easily fixed. Also, if a fixing ridge is provided on the surface of the insertion piece along the insertion direction,
In the insertion state similar to the above, the fixing ridge is pressed against the inner wall surface perpendicular to the thickness direction of the frame material in the insertion hole, so also in this case, the temporary assembly of the frame material and the connecting material. Strength is increased.

Further, in a state where each of the vertical and horizontal frame members is assembled in a rectangular frame shape at one longitudinal end portion of the connecting member main body constituting the connecting member, each of the frame members is formed by each flange plate at the front end portion thereof. If a square connection piece for applying the square missing part of each corner of the square frame body is provided integrally, in the state where each vertical and horizontal frame material is assembled into a square frame shape via the connection material, The square frame formed by each flange plate of each frame material is complete without any missing portions at its corners.

Further, in a state where the vertical and horizontal frame members are assembled in a rectangular frame shape at one end in the longitudinal direction of the connecting member main body constituting the connecting member, each outer surface of each of the adjacent vertical and horizontal frame members is provided. If the respective plate members having an L-shaped cross section that are respectively brought into contact with the rear surface of each flange plate provided at the front end of each frame member are integrally provided in two directions orthogonal to each other, the connecting member can be formed. It is possible to prevent the vertical and horizontal frame members connected to each other from being deformed in the opening direction and to prevent the flange plate of each frame material from being deformed toward the main body plate. In this case, the end face of the plate on the side in contact with the back surface of the flange plate in the plate body is applied to a ridge for forming a sealing space provided in the longitudinal direction on the back surface of the flange plate of the frame material. Then, it is possible to prevent each of the vertical and horizontal frame members connected via the connecting member from being deformed in a direction in which the formation angle is reduced (deformed in a direction opposite to a direction in which each frame member is opened).

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to examples. The configuration of each of the vertical and horizontal frame members A and B shown in each of the following embodiments is the same as that described in the section of “Prior Art”. Therefore, only the characteristic portions of the present invention will be mainly described. Figure 1 is an exploded perspective view of a window frame body F according to the present invention, FIG 2 shows a state before inserting the insertion portion Ca of one side of the connecting member J ₁ the insertion hole 21a of the vertical frame member A is a partial perspective view, FIG. 3 is a partial perspective view of the same Merged state, FIG. 4 shows a state before inserting the insertion portion Cb of the other side of the connecting member J ₁ the insertion hole 21b of the horizontal frame member B 5 is a partial perspective view of the same inserted state, and FIG. 6 is a view in which adjacent vertical and horizontal frame members A and B are connected via a connecting member J ₁ and a screw S. It is a partial perspective view of the state connected integrally.

First, the connecting members J ₁ and J ₂ for connecting the vertical frame member A and the horizontal frame member B will be described with reference to FIG. As shown in FIG. 1, in order to assemble the pair of vertical frame members A and the pair of horizontal frame members B in a rectangular frame shape, a total of four connecting members J ₁ and J ₂ are required, _two each. And each connecting member J ₁ ,
The J _2, to connection piece 17 is provided which will be described later, the connecting member J ₁ along the diagonal direction of the window frame F (or J ₂₎ is have the same configuration to each other, a phase Adjacent connecting members J ₁ and J ₂ differ only in the mounting position of the connecting member main body 11 with respect to the connecting piece 17, and all other portions have the same configuration. Therefore, in the following description, the description will be made only for _one connecting member J1. The structures of the connecting members J ₁ and J ₂ and the vertical and horizontal frame members A and B are the same, but the portions corresponding to the vertical frame member A and the horizontal frame member B are the same. , The same reference numerals are appended with the suffixes “a” and “b” to distinguish them.

As shown in the perspective view of FIG. 2, the connecting member J ₁ is a square rod-shaped connecting member main body having a length corresponding to the width of the main body plates 1 and 2 of the vertical and horizontal frame members A and B. 11 and
A plurality of (three in this embodiment) insertion pieces Ca and Cb are respectively provided on two adjacent surfaces of the connecting member body 11 at predetermined intervals, and a plurality of insertion pieces Ca and Cb are provided on the remaining two adjacent surfaces. (Four in the embodiment) counterbore holes 12a, 12b are respectively provided at predetermined intervals, and each counterbore hole 12a, 12b is provided.
Are provided with screw insertion holes 13a and 13b, respectively, on the bottom surface (see FIGS. 9 and 10). Connecting material body 11
The insert pieces Ca and Cb provided on two adjacent surfaces are provided along two directions orthogonal to each other, and are provided at the same position along the longitudinal direction of the connecting member main body 11.
The screw insertion holes 13a and 13b provided on the remaining two adjacent surfaces of the connecting member main body 11 are provided at positions not interfering with the insertion pieces Ca and Cb along the longitudinal direction, and the pitch thereof is Screw insertion holes 13a which are the same and are adjacent to each other
And 13b are provided close to each other.

Each of the insertion pieces Ca and Cb has the same configuration, and a portion extending from the central portion to the base end along the insertion direction of the main body plate portion 14 is a narrow portion having a smaller width than the remaining portion. The elastic tongue pieces 15 are provided on both sides of the narrow portion, and a pair of fixing ridges 16 are provided along the insertion direction at both ends in the width direction of the narrow portion. Also,
At one end in the longitudinal direction of the connecting member main body 11, a rectangular connecting piece 17 is provided integrally and perpendicular to the connecting member main body 11. In a state where the vertical and horizontal frame members A and B are assembled in a rectangular frame shape, the connecting piece 17 is provided at the front end of each of the frame members A and B at a right angle to the main body plates 1 and 2. The rectangular frame is formed by the plates 3 and 4, and is applied to the square missing portions at the respective corners of the rectangular frame body. As shown in FIGS. And are provided integrally with each other. As shown in FIGS. 2 and 15, adjacent frame members A and B are assembled at one end in the longitudinal direction of the connecting member main body 11 in a state where the frame members A and B are assembled in a rectangular frame shape. Each of the plate members Ta and Tb having an L-shaped cross section and being in contact with the outer side surfaces of A and B and the back surfaces of the flange plates 3 and 4 provided at the front ends of the frame members A and B, respectively. Each of the insertion pieces Ca, Cb is provided along the same direction.

Further, as shown in FIGS. 2 and 4, the frame members A vertical and horizontal, each end face of the connecting portion of the main plate 1 for B, the insertion portion Ca of the connecting member J ₁ , Cb are provided with a plurality of insertion holes 21a, 21b,
Each insertion hole 21a, between 21b, screw insertion holes 13a of the connecting member J _1, bis under holes 22a corresponding to 13b, 22b are provided. Also, the flange plates 3 and 4 of the frame members A and B
On the back side of the ridge 23a, 23
b is provided along the longitudinal direction.

Then, using the connecting members J ₁ and J ₂ ,
In order to connect the pair of vertical frame members A and the pair of horizontal frame members B to form the window frame F, the following is performed. To integrally connected to the vertical frame member A of the left and upper horizontal frame member B via the connecting member J _1, first, as shown in FIGS. 2 and 3, provided in the connecting member J ₁ One insertion piece Ca is inserted into an insertion hole 21a provided on the end face of the vertical frame material A. As a result, as shown in FIG. 12, the pair of elastic tongue pieces 15 provided on the insertion piece Ca elastically contact with both inner wall surfaces 24a of the insertion hole 21a along the thickness direction of the vertical frame material A at the same time. As shown in FIG. 11 and FIG.
a is provided with a pair of fixing ridges 16 provided in the insertion holes 21a.
Inner wall surface 25 perpendicular to the thickness direction of the vertical frame material A in FIG.
a is pressed to slightly deform the plate portion. Each of these effects, temporarily assembled strength between the vertical frame member A and the connecting member J ₁ is increased. Thus, in a state in which the vertical frame member A and the connecting member J ₁ is temporarily assembled, the respective screws S inserted through the screw insertion hole 13a of the connecting member J _1, the vertical frame member A bis under hole 2
2a (see FIG. 9), and the vertical frame material A and the connecting material J ₁
And are connected together. As described above, since the vertical frame member A and the connecting member J ₁ are firmly temporarily assembled, thereby facilitating the fixing work by the screw S.

[0017] Next, as shown in FIGS. 4 and 5, by inserting the other insertion portion Cb provided connecting member J ₁ the insertion hole 21b provided on the end face of the lateral frame member B, the in the same manner as, in the state in which the transverse frame members B and connecting member J ₁ is firmly temporarily assembled, the respective screws S inserted through the screw insertion hole 13b of the connecting member J _1, bis under transverse frame member B hole screwed to 22b (see FIG. 10), the the horizontal frame member B and the connecting member J ₁ is integrally connected. Thus, as shown in FIG. 6, the vertical frame member A and the lateral frame members B, they are connected together via a number of screw S and the connecting member J _1. Subsequently, the connecting members J ₁ (or J ₂ ) are similarly similarly applied to the remaining three connecting portions.
When the adjacent vertical and horizontal frame members A and B are integrally connected by using a pair of vertical frame members A and a pair of horizontal frame members B, as shown in FIG. J ₁ , J ₂ and many screws S
A window frame body F in the form of a square frame integrally connected via the above is obtained.

In a state where the pair of vertical frame members A and the pair of horizontal frame members B are assembled in a rectangular frame shape, each of the rectangular frame members formed by the flange plates 3 and 4 of the frame members A and B is provided. At the corner, a square-shaped missing portion is generated. However, a connecting piece 17 is provided at one end of the connecting members J ₁ and J ₂ , and is applied to the rectangular missing portion. As shown in (1), the square frame formed by the flange plates 3 and 4 of the frame members A and B is completed. 6 and FIG.
As shown in the connecting member J _1, each contact plate bodies Ta cross section L-shaped provided at one end of the J _2, first contact plate 26a of Tb, 2
6b and the second contact plates 27a, 27b
Are applied to the outer surfaces of the main body plates 1 and 2 and the rear surfaces of the flange plates 3 and 4, respectively.
B is prevented from being deformed in the opening direction, and at the same time, the flange plates 3 and 4 are also prevented from being deformed toward the main body plates 1 and 2 (see FIG. 16). Further, the second contact plates 27a, 2
7b are flange plates 3, 4 of vertical and horizontal frame members A, B.
Of the vertical and horizontal frame members A and B connected via the connecting members J ₁ and J ₂ in the direction in which the angle of formation thereof becomes smaller because the protrusions 23a and 23b provided on the back surface of the Deformation can also be prevented.

As shown in FIG. 7, a rectangular window opening 3 is provided on a panel material P constituting the outer wall of the building.
1 is provided. Then, as shown in FIGS. 7 and 8, the window frame F assembled in a rectangular frame shape is fitted into the window opening 31, and the flange plates 3 and 4 of the frame members A and B are screwed with screws S. When fixed to the panel material P via
The entire window frame F is fixed to the panel material P. As a result, as shown in FIG. 17, the ridges 23a and 23b provided on the back surfaces of the flange plates 3 and 4 of the frame members A and B come into contact with the panel material P, and , 4 and the panel material P, a sealing space is formed, and the space is filled with a sealing agent 32, and covers 33 for concealing the screws S are provided in recesses on the front surfaces of the flange plates 3, 4. Is completed, the construction for attaching the window frame F to the outer wall is completed.

In addition, elastic tongues 15 are provided on both side surfaces of the insertion pieces Ca, Cb provided on the connecting members J ₁ , J ₂ of the above-described embodiment, and the vertical and horizontal frame members A, insertion holes 21a of the B, in a state of being inserted in 21b, the inner wall surface 24a, for elastic contact to 24b, there is an advantage that temporarily assembling strength increases of the frame members a, and B and the connecting member J _1, J ₂ However, the essential function of this insertion piece is only to be able to insert it into the insertion hole of each frame material and temporarily assemble the adjacent vertical and horizontal frame materials A and B. Therefore, for example, as shown in FIG. 18, a single plate-shaped insert C'a (C'b) is sufficient. Further, the number of insertion pieces provided in the connecting member main body 11 is relatively determined in relation to the width of each of the vertical and horizontal frame members A and B.

The vertical and horizontal frame members A and B of the above embodiment
Is made of resin, but may be formed of a metal material such as aluminum. In such a case, the insertion pieces Ca, Cb are inserted into the insertion holes 21a (21b) of the frame members A, B.
14, the frame members A and B are not deformed, and the fixing ridges 16 are crushed as shown in FIG. 14, and the inner wall surface 25a of the insertion hole 21a (21b) is inserted. (25b).

Further, in the above embodiment, the vertical and horizontal frame members A and B are connected in a rectangular frame shape by using the connecting members J ₁ and J ₂ and the screw S together. Insertion holes 21a, 2
If the insertion strength (fitting strength) of the insertion pieces Ca and Cb of the connecting members J ₁ and J ₂ with respect to 1b can be ensured to be high, the screw S
It is also possible to connect the frame members A and B in a rectangular frame shape only by using the connecting members J ₁ and J ₂ without using.

[0023]

The window frame according to the present invention has a plurality of plugs inserted into a rod-shaped connecting member main body constituting a connecting member for connecting adjacent vertical and horizontal frame members in two directions orthogonal to each other. The insertion pieces into which the insertion pieces of the connecting material are inserted are provided in the end faces of the vertical and horizontal frame members, respectively, and the connecting pieces are projected in two directions orthogonal to each other. The insertion pieces are inserted into the insertion holes on the end faces of the adjacent vertical and horizontal frame members, respectively, and the connecting portions at the ends of the vertical and horizontal frame members arranged in a rectangular frame shape are connected via the connecting member. With the configuration in which the frame members are connected to each other, accurate positioning of the vertical and horizontal frame members to be connected to each other is performed only by inserting the insertion piece of the connection material into the insertion hole of the frame material. Therefore, at the construction site, each frame material can be quickly assembled and constructed.

Further, if a rectangular connecting piece is provided at one end of the connecting member main body constituting the connecting member, each of the flange plates of each frame member is assembled in a state where the vertical and horizontal frame members are assembled in a rectangular frame shape. The square frame formed by the method described above is complete without any missing portions at its corners, so that it is not necessary to apply a separate connecting piece. For this reason, the connecting piece is prevented from being mounted in the opposite direction during construction, and the connecting piece does not drop off after construction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a window frame body F according to the present invention.

[2] connecting member J ₁ on one side of the insertion portion Ca the vertical frame member A
5 is a partial perspective view showing a state before being inserted into the insertion hole 21a of FIG.

FIG. 3 is a partial perspective view of the same inserted state.

[4] connection member J ₁ on the other side transverse frame members of the insertion portion Cb of B
FIG. 9 is a partial perspective view showing a state before being inserted into the insertion hole 21b.

FIG. 5 is a partial perspective view of the same inserted state.

[6] phase the frame members A of adjacent vertical and horizontal, B is a partial perspective view of a state of being integrally connected via a connecting member J ₁ and bis S.

FIG. 7 shows a window frame 3 assembled in a rectangular frame shape with a window opening 3;
FIG. 2 is a perspective view of a state before being fitted into the device.

FIG. 8 is a perspective view of the same fitted state.

[9] a vertical frame member A and the connecting member J ₁ is a cross-sectional view of an integrated state via a number of screws S.

FIG. 10 is a cross-sectional view of a state in which the horizontal frame member B and the connecting member J ₁ are integrated via a number of screws S.

FIG. 11 is a connection cross-sectional view of portions of insertion pieces Ca and Cb of vertical and horizontal frame members A and B.

FIG. 12 shows that the insertion pieces Ca and Cb of the connecting material J ₁ are each frame material A,
FIG. 4 is a plan sectional view of a state where the plug is inserted into insertion holes 21a and 21b of FIG.

FIG. 13 is a cross-sectional view of a similar state.

FIG. 14 is a diagram corresponding to FIG. 13 in a case where the vertical and horizontal frame members A and B are made of metal.

[15] Those plate body in a state in which the frame members A vertical and horizontal, and B are connected via a connecting member J ₁ Ta, a cross-sectional view of a portion of the Tb.

[16] Each frame member A vertical and horizontal, B is the frame members in a state of being connected via a connecting member J ₁ A, B of the flange plates 3 and 4
FIG.

FIG. 17 is an enlarged sectional view taken along line XX of FIG. 8;

[Figure 18] different insertion portion C'a provided connecting member J ₁
It is a perspective view which shows (C'b).

FIG. 19 is a perspective view showing a state in which a window frame F is fitted into a window opening.

FIG. 20 is a perspective view of a conventional window frame F '.

[Explanation of symbols]

A: vertical frame member B: the horizontal frame members Ca, Cb: insertion portion F: window frame member J _1, J _2: connecting member S: bis Ta, Tb: Toitatai 3,4: frame material of the flange plate 11: Connection material body 13a, 13b: Screw insertion hole 15: Elastic tongue 16: Fixed ridge 17: Connection piece 21a, 21b: Insertion hole of frame material 23a, 23b: Projection ridge 24a, 24b on the back of flange plate of frame material : Inner wall surface in the thickness direction of the frame material in the insertion hole 25a, 25b: Inner wall surface perpendicular to the thickness direction of the frame material in the insertion hole

Claims (7)

[Claims] 1. A pair of vertical frame members, a pair of horizontal frame members, and ends of adjacent vertical and horizontal frame members in a state where the vertical and horizontal frame members are arranged in a rectangular frame shape. A window frame body composed of the four connecting members, wherein a plurality of insertion pieces are respectively protruded in two directions orthogonal to each other on a rod-shaped connecting member main body constituting the connecting member. At the same time, an insertion hole into which an insertion piece of the connecting material is inserted is provided on an end face of each of the vertical and horizontal frame materials, and each of the insertion pieces projecting in two directions orthogonal to each other on the connecting material, The connecting portions of the end portions of the vertical and horizontal frame materials arranged in a rectangular frame shape are inserted into the insertion holes of the end surfaces of the adjacent vertical and horizontal frame materials, respectively, and are connected via the connecting material. A window frame characterized by the following. 2. The insertion piece is provided with elastic tongues at both ends in a direction orthogonal to the insertion direction, and in a state where the insertion piece is inserted into an insertion hole of a frame material, the elastic tongue is 2. A structure in which the insertion hole is elastically contacted with an inner wall surface of the frame material along a thickness direction of the frame material.
The window frame according to the above. 3. The insertion piece is provided with a fixing ridge along the insertion direction on its plate surface, and in a state where the insertion piece is inserted into an insertion hole of a frame material, the fixing ridge is The window frame according to claim 1, wherein the window frame has a structure pressed against an inner wall surface perpendicular to a thickness direction of the frame material in the insertion hole. 4. The connecting member body of the connecting member is provided with a number of adjacent frame members and a large number of screw insertion holes for integrating the connecting member body along two directions orthogonal to each other. The window frame according to claim 1, wherein: 5. A connecting member main body constituting the connecting member is formed at one longitudinal end thereof by each flange plate at the front end of each frame member in a state where the vertical and horizontal frame members are assembled in a rectangular frame shape. 2. The window frame according to claim 1, wherein a square connecting piece is provided integrally with the rectangular frame to fit a square notch at each corner of the window frame. 6. In a state where the vertical and horizontal frame members are assembled in a rectangular frame shape, one end portion in the longitudinal direction of the connecting member main body constituting the connecting member is connected to each outer side surface of the adjacent vertical and horizontal frame members. The respective plate members having an L-shaped cross section which are respectively in contact with the back surface of each flange plate provided at the front end of each frame member are orthogonal to each other.
The window frame according to claim 1, wherein the window frame is integrally provided in the direction. 7. An end face of the plate of the plate body, which is in contact with the back surface of the flange plate, is applied to a ridge provided in the longitudinal direction on the back surface of the flange plate of the frame material. Item 7. The window frame according to Item 6.