JP2002180748A - Window frame for combined sash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combined sash including an aluminum frame and a resin frame, which is constructed such that most of a contact surface between a window opening and a decorated casing is formed of the resin frame, thereby to further enhance the heat insulating properties and prevent condensation. SOLUTION: According to the combined sash including the aluminum frame 2 mounted in the window opening A and the resin frame 3 covering an indoor- side exposed portion of the aluminum frame 2, the resin frame 3 mounted on the aluminum frame 2 in the window opening A from the internal periphery, is formed of a resin head 31, a resin sill 32, and resin jambs 33 and 34, and these resin head, resin sill, and right and left resin jambs have angle pieces 31d, 41c, 33c, and 34b formed on their indoor portions, respectively. These angle pieces are connected to each other, to thereby form continuous four sides of a resin trim 60. Further, the resin trim 60 makes face contact with the decorated casing 60A of the window opening A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal frame mounted on an opening of a building, in which the exposed portion on the indoor side is covered with a resin frame to improve heat insulation and prevent dew condensation. A composite sash window frame that eliminates the visual coldness of the sash.

[0002]

2. Description of the Related Art In recent years, a composite type sash window frame having a resin frame on an exposed portion on the indoor side of a window frame formed of a metal frame such as an aluminum sash has been used. This is because the indoor side of the metal frame is covered with a resin whose thermal conductivity is extremely low compared to metal, thereby improving the heat insulation of the sash window and suppressing condensation on the indoor side. The aim is to improve the design by eliminating the coldness and at the same time integrating it with the interior decoration. Such a composite type sash window frame is installed in a window opening with a resin frame attached to a metal frame and the window frame completed.

[0003]

However, in the conventional composite-type composite sash window frame, even if a resin frame is attached to an exposed portion on the indoor side of a window frame made of a metal frame such as an aluminum sash, it is originally required. It was difficult to completely achieve the purpose of the above. That is, even if the resin frame is attached to the aluminum frame, part of the aluminum frame covered with the resin frame may transfer heat to the decorative frame of the window opening, and therefore, as a composite type window frame, The effect of preventing dew condensation by improving the heat insulating property, which is the object of the invention, and the effect of eliminating the visual coldness of the metal frame were insufficient.

[0004] On the other hand, resin frames are more susceptible to aging and external impact than metal frames made of aluminum or the like, and may be discolored or damaged, and may need to be replaced. In addition, when the interior decoration is changed in order to give the resin frame integrity with the interior decoration, the resin frame may need to be replaced at the same time according to the interior decoration. However, conventionally, even when the resin frame is replaced, it is necessary to remove the entire window frame including the metal frame from the window opening, and there is a problem that workability is extremely poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. As a composite type window frame, the heat insulation of the entire four-peripheral frame is improved to sufficiently prevent dew condensation, and the visual appearance of the metal frame is improved. It is an object of the present invention to provide a window frame of a composite sash that exhibits a sufficient design effect by eliminating excessive coldness.
Another object of the present invention is to make it possible to replace only the resin frame while keeping the window frame installed in the window opening, thereby improving the maintainability of the composite sash window.

[0006]

According to a first aspect of the present invention, there is provided an aluminum frame mounted on a window opening and a resin frame for covering an exposed portion of the aluminum frame on the indoor side. In the composite sash, the resin frame to be attached to the indoor inner side of the aluminum frame to be attached to the window opening is composed of a resin upper frame, a resin lower frame, and left and right resin vertical frames. And angle pieces are provided in the indoor part of the left and right resin vertical frames, and each of these angle pieces continuously constitutes a resin decorative edge four times around each other, and the resin decorative edge faces the decorative frame of the window opening. It is characterized by becoming.

According to a second aspect of the present invention, in the first aspect of the present invention, the resin lower frame attached to the indoor inner side of the aluminum lower frame mounted on the window opening is a resin main frame and other components. The resin main frame is composed of a frame main body accommodated in a concave groove formed by a lower inner rail of an aluminum lower frame and a rising piece provided on the indoor side, and along the rising piece. It is composed of the provided inverted L-shaped angle pieces and is attached to the surface of the aluminum lower frame. The angle pieces of the resin main frame form a resin decorative edge by continuously making four rounds with each other angle piece. It is characterized by doing.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the decorative resin frame formed by each of the angle pieces does not include an aluminum material with respect to the decorative frame of the window opening. It is characterized by a direct interview.

According to a fourth aspect of the present invention, in the third aspect of the present invention, each of the angled pieces has the same shape as the resin folded pieces projecting toward the indoor side, and the resin folded pieces are mutually connected. In addition, an integrated resin decorative edge is formed continuously over four circumferences.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a cross-sectional view of a sliding window using the composite window frame of the present invention as viewed from the indoor side, FIG. 2 is a vertical cross-sectional view thereof, and FIG. 3 is a cross-sectional view corresponding to FIG. 1 with a window shoji removed. FIG. 4 is a longitudinal sectional view corresponding to FIG. 2 with the window shoji removed, FIG. 5 is an enlarged view of the lower frame portion of FIG.
7 is an enlarged view of the upper frame portion of FIG. 4, and FIG. 7 is an enlarged view of a main portion of FIG. In each of these drawings, the composite sash window according to the present invention is configured such that a pair of window sashes 10 can be freely pulled into a window frame 1 composed of upper and lower frames and left and right vertical frames attached to a window opening A. Things.

Each of the frame members constituting the window frame 1 is a composite type frame member, and is composed of an aluminum frame 2 serving as a base and a resin frame 3 covering an exposed portion on the indoor side. That is, the aluminum frame 2 is configured by forming an aluminum upper frame 21, an aluminum lower frame 22, and aluminum vertical frames 23 and 24 into a rectangular frame.
Are resin upper frame 31, resin lower frame 32, resin vertical frames 33, 34
Is framed in a square.

The upper resin frame 31 is the upper aluminum frame 2.
1, the resin lower frame 32 is attached to the aluminum lower frame 22,
Is the aluminum vertical frame 23, and the resin vertical frame 34 is the aluminum vertical frame 24.
, Respectively. A specific mounting method will be described later. The aluminum frame 2 is formed by extruding aluminum, and the resin frame 3 is formed by extruding vinyl chloride or acrylic resin. Also,
These resin materials may be mixed with wood powder or the like to give the appearance of appearance as if they were made of wood.

On the other hand, each window sash 10 has a double glazing 12 inside a frame 11 which is formed by vertically and horizontally framing frame members.
I will put in. 4 is a screen door. Similarly to the window frame 1, each frame member constituting the frame body 11 is also composed of an aluminum frame 13 and a resin frame 14 attached so as to cover an exposed portion on the indoor side. That is, the resin upper frame 14a is on the aluminum upper frame 13a, and the resin lower frame 14b is on the aluminum lower frame 13b.
In addition, the resin vertical frame 14c is replaced with the aluminum vertical frame 13c,
4d are attached to the aluminum vertical frame 13d, respectively.

The present invention relates to an aluminum frame 2 for a window opening A.
The resin frame 3 attached from the inner peripheral portion to the resin upper frame 31
, A resin lower frame 32, and resin vertical frames 33, 34, and angle pieces 31d, 41c, 33c, 34b are provided in the indoor portions of the resin upper frame, the resin lower frame, and the left and right resin vertical frames, and each of these angles is provided. The pieces constitute a resin decorative frame 60 continuously four times around each other, and the resin decorative frame 60 is in contact with the decorative frame 60A of the window opening A. Hereinafter, the resin upper frame 31 constituting the resin frame 3 described above.
The resin lower frame 32 and the resin vertical frames 33 and 34 will be sequentially described in detail.

First, as shown in FIG. 2 and FIG. 4, the above-mentioned aluminum lower frame 22 has an inner peripheral surface formed in a step-like shape. The lower inner rail 22b is formed to protrude. At the indoor end of the aluminum lower frame 22, a rising piece 22c that stands substantially vertically is formed. And this aluminum lower frame 22
On the other hand, a resin lower frame 32 composed of three resin frames is attached. That is, the resin lower frame 32 has a resin main frame 41 as a first resin frame between the lower inner rail 22b and the rising piece 22c on the indoor side, and a resin auxiliary frame as a second resin frame on the indoor side of the rising piece 22c. 42, and a resin cover frame 43, which is a third resin frame, is attached between the lower outer rail 22a on the outdoor side and the lower inner rail 22b on the indoor side. The lower frame 22 is installed so as to cover substantially the entire inner peripheral surface. In the present invention, the resin auxiliary frame 42 serving as the second resin frame and the resin cover frame 43 serving as the third resin frame may be selectively mounted as needed.

As is clear from FIG. 5, the main resin frame 41, which is the first resin frame, includes the lower inner rail 22b and the rising piece 22.
frame body 41 to be accommodated in the groove formed by
a and the standing piece 41 which is in close contact with the inner side surface of the lower inner rail 22b.
b and an inverted L-shaped angle piece 41c provided along the rising piece 22c. A hanging piece is provided on the indoor side of the hollow portion of the frame body 41a, and a locking portion at the lower end thereof is locked with a projection 22g provided on a rising piece 22c of the aluminum lower frame 22. The lower inner rail 22b is in contact with the indoor surface of the lower inner rail 22b so as to overlap with the inner surface of the lower inner rail 22b, and the leading end thereof is engaged with the upper end of the lower inner rail 22b.
An outdoor frame is formed on the outdoor surface of the window frame 2c so that the outdoor side piece is in contact with the outdoor side and the indoor side piece is protruded toward the indoor side.
A is attached so as to be in direct contact with the upper surface of A. As a result, the first resin frame 41, which is the first resin frame, is detachably attached to the entire aluminum lower frame 22 in the expected direction without using screws or the like. It is. When attaching the main resin frame 41 to the aluminum lower frame 22, the frame main body 41 a is press-fitted into the concave groove of the aluminum lower frame 22, and the locking portion is locked to the projection provided on the aluminum lower frame 22. Let's make the aluminum bottom frame 2
2 is elastically fixed.

The rising piece 22c provided on the indoor side of the aluminum lower frame 22 does not have an inverted L-shaped angle structure as in the prior art, but is formed in an upright shape. The surface is indirectly in contact with a vertical surface on the outdoor side via a resin auxiliary frame 42 described later without contacting the surface of the decorative frame 60A. The angle piece 4 of the main resin frame 41 adhered to the rising piece 22c.
The horizontal plane, which is the indoor surface of 1c, has the rising frame 22c, that is, the decorative frame 60A without the aluminum metal part.
Directly in contact with the surface. As a result, the resin material having a low thermal conductivity abuts on the decorative frame 60A on the indoor side to suppress the heat conduction from the outside air to the indoor, thereby significantly increasing the heat insulating effect. In addition, the standing indoor surface of the rising piece 22c is
The decorative frame 60 </ b> A may directly directly contact the vertical surface on the outdoor side.

Next, a resin auxiliary frame 42 as a second resin frame
Is mounted on the indoor side of the rising piece 22c of the lower inner rail 22b, and includes a frame body 42a having a hollow portion housed in a concave groove formed on the lower surface of the rising piece 22c, and a rising piece 22c. And an upright piece 42b closely contacted with the inner side surface. That is, the frame body 4
2a is provided with three locking portions on the upper surface and the lower surface of the vertically long hollow portion, and the upright piece 42b is configured to rise up from the indoor surface of the frame body 42a, and the locking portion is provided on the outdoor side of the intermediate portion. Is provided.

Therefore, the three locking portions provided on the frame body 42a are provided on the lower surface of the rising piece 22c.
h, and the locking portion provided at the intermediate portion of the standing piece 42b is locked to the projection 22j provided on the indoor side of the rising piece 22c. As a result, the second resin can be used without using screws or the like. The resin auxiliary frame 42, which is a frame, is
2 is detachably attached to the entire projection direction by locking means. As shown in FIG. 5 to be described later, the resin auxiliary frame 42 is attached to the window opening A integrally with the aluminum lower frame 22 in a state where the resin auxiliary frame 42 is attached in advance in the direction in which the aluminum lower frame 22 is viewed by the locking means.

The resin auxiliary frame 42 is located on the indoor side surface of the aluminum lower frame 22, and the indoor surface is in direct contact with the vertical surface which is the outdoor side surface of the decorative frame 60A. Therefore,
The rising piece 22c of the aluminum lower frame 22 has a decorative frame 60A.
Without directly contacting the outdoor vertical surface of the
The indoor surface of the first angle piece 41c and the indoor surface of the resin auxiliary frame 42 are in direct contact with the decorative frame 60A on the surface and the vertical surface without the intermediary of the aluminum metal part. Therefore, heat conduction from the outside air to the room is suppressed, and the heat insulation effect is significantly enhanced. In addition, the resin main frame 41 and the resin auxiliary frame 42 are attached so as to sandwich the rising piece 22c of the aluminum lower frame 22 so as to minimize heat conduction from outside air to the room.

Next, a resin cover frame 43 as a third resin frame
Is mounted between the lower outer rail 22a and the lower inner rail 22b in the direction in which only the outer sash 10 is located on the indoor side, and has a flat horizontal plate 43a and an inverted L-shaped L continuous with the indoor side. The cross section is substantially Z-shaped with the character piece 43b. Therefore, the outdoor side edge of the horizontal plate 43a is engaged with the groove 22e provided at the lower end of the lower outer rail 22a, and the L-shaped piece 43b is provided at the lower end of the lower inner rail 22b. As a result, the resin cover frame 43 as the third resin frame is detachably attached to the aluminum lower frame 22 without using screws or the like. The left end of the resin cover frame 43 located on the aluminum vertical frame 23 side is in contact with the resin vertical frame 33, and the upper surface thereof is pressed and locked by the door stop block 35, and the right side (window opening) A (approximately the center of A) is pressed and locked by a plate-shaped central airtight block 36.

As described above, the resin lower frame 32 has the resin main frame 41 between the lower inner rail 22b and the rising piece 22c.
A resin auxiliary frame 42 is provided on the indoor side of the rising piece 22c, and a resin cover frame 4 is provided between the lower outer rail 22a and the lower inner rail 22b.
3, the lower outer rail 22 on the outdoor side
The heat insulation is further improved by covering almost the entire inner peripheral surface of the aluminum lower frame 22 on the indoor side from a. As shown in FIG. 5, the procedure for attaching the resin lower frame 32 to the aluminum lower frame 22 is as follows. First, the resin auxiliary frame 42 constituting the resin lower frame 32 is attached to the indoor side of the aluminum lower frame 22. Then, the lower aluminum frame 22 is attached to the window opening A, and then the main resin frame 41 and the resin cover frame 43 are sequentially attached to the lower aluminum frame 22. However, the main resin frame 41 and the resin cover frame 43 may be attached to the aluminum lower frame 22 in advance, and these may be integrally attached to the window opening A. In addition, the lower and outer rails 22 where the inner sash 10 is located
Since the inner sash 10 itself is located between a and the lower inner rail 22b, and the main resin frame 41 is mounted on the indoor side, the mounting of the resin cover frame 43 is unnecessary.

Next, as shown in FIG. 5, the resin cover frame 43 is attached to the aluminum lower frame 22 in the following manner. That is, the outdoor side edge of the horizontal plate 43a is locked by being inserted into the groove provided at the lower end of the lower outer rail 22a, and the L-shaped piece 43b is provided at the lower end of the lower inner rail 22b. Then, the upper surface of the left end located on the aluminum vertical frame 23 side is pressed and locked by a door stop block 35, and the right side is pressed and locked by a central airtight block 36. It becomes. Accordingly, the central airtight block 36 and the door stop block 35 are removed, and the L-shaped piece 43b is pulled up and released from the groove of the hollow portion 22d provided at the lower end of the lower inner rail 22b,
By pulling the outdoor side edge of the horizontal plate 43a out of the groove of the lower outer rail 22a, the aluminum lower frame 2 of the resin cover frame 43 is pulled out.
2 can be easily released.

Next, as shown in FIG.
Has a hanging piece 21b at a position corresponding to the lower outer rail 22a on the outdoor side of the aluminum lower frame 22 with respect to the upper frame body 21a, and has a projecting piece 21c on the indoor side. The hanging piece 21b forms an outdoor upper rail together with a locking piece 31b of the resin upper frame 31, which will be described later.
The tip of the hanging piece 21b is formed in a substantially J-shape on the indoor side, and locks the locking piece 31b. The resin upper frame 31 is provided with the above-mentioned hanging piece 2.
It is installed so as to cover the inner peripheral surface of the aluminum upper frame 21 on the indoor side of 1b. The resin upper frame 31 has an angle formed by a frame main body 31a provided along the aluminum upper frame 21, a locking piece 31b and an upper rail 31c suspended from the frame main body 31a, and a substantially L-shaped piece protruding indoors. Piece 31d. The locking piece 31b has its tip locked to the tip of the hanging piece 21b of the aluminum upper frame 21, and if necessary,
The lower end is partially swaged to firmly bond the two.

The angle piece 31d is in direct contact with the decorative frame 60A of the window opening A without the aluminum upper frame 21 interposed therebetween. In the region between the upper rail 31c and the angle piece 31d in the frame main body 31a, screw holes are formed at appropriate intervals along the longitudinal direction, and the resin upper frame 31 has its locking piece 31b formed of aluminum. The screw inserted into the screw hole penetrates through the protruding piece 21c of the aluminum upper frame 21 while being locked to the hanging piece 21b of the upper frame 21, thereby being fixed to the aluminum upper frame 21.

Next, the structure of the left and right vertical frames will be described with reference to FIGS. 1, 3 and 7. The aluminum vertical frame 23 on the left side in FIG.
3a and a contact piece 23b at the indoor end which is parallel to the locking projection 23a. The locking projection 23a has a tip bent toward the indoor side, and has a resin vertical frame 33 to be described later.
With the locking piece 33b. The resin vertical frame 33 has an expected width approximately half that of the aluminum vertical frame 23, and
Is installed so as to cover the inner peripheral surface of the aluminum vertical frame 23 on the indoor side.

The resin vertical frame 33 is an angle piece composed of a frame body 33a abutting on the inner peripheral surface of the aluminum vertical frame 23, a locking piece 33b extending from the outdoor side, and a substantially L-shaped piece extending from the indoor side. 33c. Locking piece 33b
Of the aluminum vertical frame 23 is engaged with the locking projection 23a of the aluminum vertical frame 23, and the angle piece 33c is
b, and the tip is bent and engaged with the tip of the contact piece 23b. Therefore, the angle piece 33c has the outdoor piece as the contact piece 23b.
Along with a part of the decorative frame 60A, the indoor side piece directly contacts the inner surface of the decorative frame 60A without the aluminum material. Then, the angle piece 33c is connected to the resin upper frame 31 described above.
Angle piece 31d and angle piece 41c of resin lower frame 32
And adjacent to. When attaching the resin vertical frame 33, the tip of the angle piece 33c is locked first, and then the locking piece 33b is elastically engaged with the locking projection 23a. A screw hole is formed in the frame main body 33a along its longitudinal direction. After the resin vertical frame 33 is installed, the resin vertical frame 33 is fixed to the aluminum vertical frame 23 with screws from the indoor side. In addition, the locking piece 33
On the outdoor side of b, a tight material 33d is provided, and this is brought into contact with the outdoor side window sash 10 to improve airtightness.

Next, in the right vertical frame, the aluminum vertical frame 24
Is a door stop piece 24a for an indoor window shoji on the inner peripheral surface side.
And an abutment piece 24b parallel to the door stop piece 24a at the indoor end. The resin vertical frame 34 is installed so as to cover the inner peripheral surface of the aluminum vertical frame 24 on the indoor side of the door stop piece 24a. The resin vertical frame 34 is a frame main body 34a that is in contact with the inner peripheral surface of the aluminum vertical frame 24 between the door stop piece 24a and the contact piece 24b, and an angle piece formed by a substantially L-shaped piece extending from the indoor side. 34b. The angle piece 34b is a contact piece 2 of the aluminum vertical frame 24.
4b, the tip is bent, and engages the base of the contact piece 24b. A screw hole is formed in the frame body 34a along the longitudinal direction, and after installing the resin vertical frame 34 in a state where the tip of the angle piece 34b is engaged with the contact piece 24b of the aluminum vertical frame 24, It is fixed to the aluminum vertical frame 24 with screws from the indoor side.

As for the angle piece 34b, the outdoor side piece directly abuts on the outdoor side face of the decorative frame 60A together with a part of the contact piece 24b, and the indoor side piece has an aluminum material on the inner side face of the decorative frame 60A. Without direct contact. And this angle piece 34b is adjacently joined to the angle piece 31d of the resin upper frame 31 and the angle piece 41c of the resin lower frame 32, and the resin having continuous four circumferences by the angle piece 33c of the resin vertical frame 33. The decorative edge 60 is configured. Further, a tight member 34c is provided on the outdoor side of the angle piece 34b, and the tight member 34c is brought into contact with the indoor window sash 10 to improve airtightness.

As described above, the upper resin frame 31 and the lower resin frame 3
2. Angle pieces 31 provided on the resin vertical frames 33 and 34, respectively.
As shown in FIGS. 1, 2, 3 and 4, resin folded pieces (angles) having the same shape protruding indoors are provided on the indoor side portions of the angle pieces 41 c and the angle pieces 33 c and 34 b, respectively. Protruding pieces), and these constitute a resin decorative edge 60 that is continuous around the four circumferences.
Is directly in contact with the decorative frame 60A provided on the indoor side without using an aluminum material so as to have a sense of unity with them. In this manner, the resin decorative frame 60 is used as the decorative frame 60A.
By directly interviewing without aluminum material,
The heat insulation of the window opening A is greatly improved to greatly prevent dew condensation. The lower part of the makeup frame 60A constitutes a window sill. Also, in FIG.
A screen door 4 is provided on the outside of the vehicle, and a door stop block 35 is provided at the end of the lower frame in contact with the resin vertical frame 33.

The configuration of each window frame in this embodiment has been described above. As described above, the resin upper frame 31, the resin lower frame 32, and the resin vertical frames 33 and 34 are basically provided with respective locking structures with respect to the aluminum upper frame 21, the aluminum lower frame 22, and the aluminum vertical frames 23 and 24, respectively. And, if necessary, by screws screwed from the inner peripheral surface side of the window frame. Therefore, when it is necessary to replace these resin frames due to aging or damage due to impact, the inner peripheral surface of the window frame is released by releasing the locking part that fixes the resin frame without removing the aluminum frame. The resin frame can be removed on the side and replaced.

The embodiment of the present invention has been described with reference to the drawings. However, the present invention is not limited to the matters described in the above embodiment, and can be changed and improved based on the description in the claims. For example, in the above-described embodiment, the configuration in which the configuration of the present invention is realized for all the frame members of the window frame is shown. However, this is not necessarily applied to all the frame members of the window frame. Further, the concept of “screw” described in this specification is used as a fixture including screws, bolts, and the like. The screws and the like may not be used for all of the resin frame 3 and the aluminum frame 2 but may be connected to each other by a locking structure.

[0033]

As described above, according to the first aspect of the present invention, the resin frame to be attached to the aluminum frame of the window opening from the inner peripheral portion thereof is composed of the resin upper frame, the resin lower frame, and the resin vertical frame. Make up,
Angle pieces are provided inside the resin upper frame, the resin lower frame, and the left and right resin vertical frames, and each of the angle pieces forms a resin decorative edge continuously around four circumferences, and the resin decorative edge is a window opening. Because it is in contact with the decorative frame of the window, the contact surface of the window opening with the decorative frame will be composed of a resin decorative frame with four consecutive rounds, and the aluminum frame material with high thermal conductivity Since the interposition is reduced as much as possible, the heat insulating performance is further enhanced, so that the dew condensation can be largely prevented and the corrosion of the window frame can be prevented. In addition, it is possible to improve the design by eliminating the visual coldness of the metal frame by the resin decorative edge that is continuous around the four circumferences composed of the resin frame, and by having the entirety of the four circumferences with the interior decoration. .

Further, according to the present invention, the resin upper frame, the resin lower frame, and the left and right resin vertical frames constituting the resin frame are attached to the aluminum frame by a locking structure, so that the window frame is attached to the window opening. It is possible to replace only the resin frame in the installed state, the resin frame can be easily replaced, and the maintenance of the composite sash window can be improved.

According to the third aspect of the present invention, since the decorative resin frame formed by the angle pieces of the respective resin frames is in direct contact with the decorative frame of the window opening without using an aluminum material, By eliminating the interposition of the aluminum frame material having high thermal conductivity, there is an effect that the heat insulation performance can be further improved and the prevention of dew condensation can be largely achieved.

According to the fourth aspect of the present invention, the resin folded pieces protruding toward the indoor side of each angle piece have the same shape, and the resin folded pieces are continuously integrated around the circumference on four sides. Since the decorative resin frame is formed, it is possible to prevent the dew condensation while maintaining the integrity of the window opening with the decorative frame.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a sliding window using the composite window frame of the present invention as viewed from the indoor side.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a cross-sectional view corresponding to FIG. 1 with a window shoji removed.

FIG. 4 is a longitudinal sectional view corresponding to FIG. 2 with a window shoji removed.

FIG. 5 is an enlarged view of a lower frame portion of FIG. 4;

FIG. 6 is an enlarged view of an upper frame portion of FIG. 4;

FIG. 7 is an enlarged view of a main part of FIG. 3;

[Explanation of symbols]

 A Window opening 1 Window frame 2 Aluminum frame 3 Resin frame 4 Screen door 10 Window shoji 21 Aluminum upper frame 21a Upper frame body 21b Hanging piece 21c Projecting piece 22 Aluminum lower frame 22a Lower outer rail 22b Lower inner rail 22c Rising piece 23 Aluminum vertical Frame 23a Locking protruding piece 23b Contact piece 24 Aluminum vertical frame 24a Door stop piece 24b Contact piece 31 Resin upper frame 31a Frame body 31b Locking piece 31c Upper rail 31d Angle piece 32 Resin lower frame 33 Resin vertical frame 33a Frame body 33b Locking piece 33c Angle piece 34 Resin vertical frame 34a Frame body 34b Angle piece 35 Door block 41 Resin main frame 41a Frame body 41b Standing piece 41c Angle piece 42 Resin auxiliary frame 43 Resin cover frame 60 Resin decorative frame 60A Makeup frame

Claims (4)

[Claims] 1. A composite sash comprising: an aluminum frame mounted on a window opening; and a resin frame covering an exposed portion of the aluminum frame on the indoor side, wherein an indoor inner peripheral portion of the aluminum frame mounted on the window opening is provided. The upper and lower resin frames and the left and right vertical resin frames are used to form the resin frame to be mounted on the interior of the upper resin frame, the lower resin frame, and the left and right vertical resin frames. Wherein the resin frame is continuously formed around the circumference of the window four times, and the resin frame is in contact with the decorative frame of the window opening. 2. A resin lower frame attached to an inner peripheral portion of the aluminum lower frame mounted on the window opening on the indoor side is composed of a resin main frame and another resin auxiliary frame, and the resin main frame is an aluminum lower frame. The aluminum lower frame is composed of a frame body accommodated in a groove formed by a lower inner rail and a rising piece provided on the indoor side, and an inverted L-shaped angle piece provided along the rising piece. The window frame of the composite sash according to claim 1, wherein the window frame of the composite sash is attached to a surface portion, and the angled piece of the main resin frame forms a resin decorative edge by continuing four times with each other angled piece. 3. The composite sash according to claim 1, wherein the decorative frame made of the angle pieces is in direct contact with the decorative frame of the window opening without using an aluminum material. Window frame. 4. The resin folded pieces protruding toward the indoor side of each of the angle pieces have the same shape, and the resin folded pieces are continuously formed around each other four times to form an integrated resin decorative edge. The composite sash window frame according to claim 3, characterized in that: