KR102636501B1 - Composite window frame and its fastening method - Google Patents

Abstract

The present invention is fastened between the upper parts of a pair of stainless steel frames and arranged to be spaced apart so as to face each other, a groove-shaped fastening part is formed on the outside, a fixing piece is formed on one side of the open entrance of the fastening part to protrude inside the fastening part, and the inner A pair of aluminum frames with groove-shaped joints formed thereon; An insulating material that is inserted into the joint and connects a pair of aluminum frames to perform an insulating function; And a pair of stainless steel frames fastened to both sides of a pair of aluminum frames, a bent portion bent in a "┗" or "┛" shape is formed at the upper end of the inner side, and the bent portion is inserted into and fastened to the fastening portion, wherein the bent portion is After inserting it into the fastening part at an angle and pressing the bent part with the pressing means, the stainless steel frame rotates so that it is level with the floor. Then, when the fixing piece is pressed with the pressing means, the fixing piece is deformed and comes into close contact with the bent part, thereby connecting the stainless steel frame and the aluminum frame. Provides a composite window frame characterized in that it is fixedly fastened.

Description

Composite window frame and its fastening method {COMPOSITE WINDOW FRAME AND ITS FASTENING METHOD}

The present invention relates to a composite window frame and a method for fastening it. More specifically, the present invention relates to a composite window frame and a method for fastening the same. In more detail, the structure and fastening are simple, and the aluminum frame including the insulation material and the stainless steel frame on both sides are firmly fastened to ensure structural safety and vibration and earthquake resistance. It relates to a composite window frame that can maintain a strong bond and a method of fastening the same.

Generally, buildings such as houses, apartments, and buildings have windows installed on all or part of the walls so that the outside can be viewed from the inside of the building, and for lighting, indoor ventilation, and the bringing in or out of goods.

Depending on the opening and closing method, windows are divided into built-in, hinged, and non-opening types. The built-in type is a window that is fixed to the wall and cannot be opened or closed, while the hinged type can be opened and closed inward or outward from the installation direction of the wall. These windows are mainly used for bringing in items or for people to come in and out, and the non-closed type windows are often used for ventilation and lighting as they can be opened and closed in line with the installation direction of the wall.

Windows include a window frame that forms an outer frame and a glass window that is coupled to the window frame and opens and closes together. To improve insulation performance, a closed window that cannot be opened or closed is installed at the top, on one side, or at a corner.

Windows are classified by material into stainless steel, plastic, wood, aluminum, and other materials. Stainless steel is heavy and is formed by a roll forming device, so it is difficult to process and form, and construction is difficult, and plastic is insulating. Although it has excellent performance, it has high elasticity, weak strength, and a low ignition temperature. Aluminum is lighter than stainless steel and is easier to process and form. Although it has small elasticity, it has high thermal conductivity and large heat loss due to convection, which can reduce the insulation performance of windows. Therefore, conventional windows were mainly installed by combining an extruded aluminum frame with an insulating material such as azone or polyamide. The azone insulation method involves injecting liquid azone into an aluminum frame, hardening it, and then removing the aluminum contact points, while the polyamide insulation method involves inserting and fastening a previously manufactured polyamide insulation bar between a pair of aluminum frames.

In this regard, referring to Figure 1, an aluminum insulated window frame is disclosed in which insulating bars 30 and 40 are installed at predetermined intervals between the inner and outer aluminum profiles 10 and 20 supporting the ends of the glass window W. It is done.

However, the conventional aluminum insulated window frame described above has lower strength and higher thermal conductivity than stainless steel windows, so it does not have high insulation properties, and condensation phenomenon easily occurs due to the temperature difference between indoors and outdoors, and its structural safety is poor, causing vibration and earthquakes. When this occurs, there is a problem that the fastening state may be misaligned or separated.

Meanwhile, as a conventional technology, Patent Document 1 describes an aluminum project with improved insulation performance, which increases the insulation effect by increasing the water tightness and airtightness between the inside and outside of the building by double-composing the chassis frame with strong aluminum and PVC members with good insulation properties, and The pull-down window sash structure has been revealed.

Republic of Korea Patent Publication No. 10-0975604 (announced on August 17, 2010)

The present invention was devised to solve the above-mentioned problems. The structure is simple, the stainless steel frame is firmly fastened to the aluminum frame, which increases the fastening force and fixing force, makes it easy to fasten, and increases the strength and durability, making it structurally stable. The purpose is to provide a composite window frame and its fastening method that can maintain a safe, vibration- and earthquake-resistant combination, have excellent insulation due to low thermal conductivity, and minimize condensation due to a small indoor and outdoor temperature difference.

In order to solve the above problem, the present invention is fastened between the upper parts of a pair of stainless steel frames and arranged to be spaced apart so as to face each other, a groove-shaped fastening part is formed on the outside, and a fixing piece is provided on one side of the open entrance of the fastening part. A pair of aluminum frames protruding inward and having a groove-shaped coupling portion formed on the inside; An insulating material that is inserted into the joint and connects a pair of aluminum frames to perform an insulating function; And a pair of stainless steel frames fastened to both sides of a pair of aluminum frames, a bent portion bent in a "┗" or "┛" shape is formed at the upper end of the inner side, and the bent portion is inserted into and fastened to the fastening portion, wherein the bent portion is After inserting it into the fastening part at an angle and pressing the bent part with the pressing means, the stainless steel frame rotates so that it is level with the floor. Then, when the fixing piece is pressed with the pressing means, the fixing piece is deformed and comes into close contact with the bent part, thereby connecting the stainless steel frame and the aluminum frame. Provides a composite window frame characterized in that it is fixedly fastened.

In addition, the present invention includes a first step of inserting the bent portion of a pair of stainless steel frames into the fastening portion of a pair of aluminum frames at an angle; A second step of placing a pressing means on the bent part and pressing the bent part with the pressing means to rotate the stainless steel frame so that it is level with the floor; As the stainless steel frame rotates and becomes horizontal with the floor, the first protrusion protruding inside the vertical fastening piece of the fastening part is inserted into the first support groove formed on the inner surface of the vertical bending piece of the bending part, and protrudes to the upper side of the horizontal fastening piece of the fastening part. A third step in which the second protrusion is inserted into the second support groove formed on the lower surface of the horizontally bent piece; A fourth step of arranging a pressing means on the fixed piece and pressing the fixed piece with the pressing means so that the fixed piece is deformed and comes into close contact with the bent portion so that the stainless steel frame and the aluminum frame are fixedly coupled; A fifth step of connecting and installing an insulating bar between a pair of stainless steel frames; and a sixth step of connecting the glass window to the composite window frame.

According to the present invention, the structure is simple, the stainless steel frame is firmly fastened to the aluminum frame, thereby increasing the fastening force and fixing force, the fastening is easy, and the strength and durability are increased to create a combination that is structurally safe and resistant to vibration and earthquake. It has excellent insulation due to its low thermal conductivity, and the small difference in indoor and outdoor temperatures minimizes condensation. By fastening the insulating bar to the stainless steel frame, a pair of stainless steel frames do not close or spread apart, especially due to external forces. By preventing the frame from rotating in the reverse direction, it supports the connection to the aluminum frame so that it does not become loose, and has the effect of increasing insulation.

Figure 1 is a diagram showing a conventional aluminum insulating frame.
Figure 2a is a cross-sectional view of a pair of stainless steel frames according to the present invention, Figure 2b is a cross-sectional view of a pair of aluminum frames with insulation materials combined, and Figure 2c is a cross-sectional view of an insulating bar.
Figure 3a is a cross-sectional view showing a state in which the bent portion of a pair of stainless steel frames is obliquely inserted into the fastening portion of a pair of aluminum frames.
Figure 3b is a cross-sectional view showing a scene in which the bent part is pressed with a pressing means while the bent part is inserted at an angle into the fastening part.
Figure 3c is a cross-sectional view showing a state in which the first protrusion and the second protrusion are inserted and fastened into the first support groove and the second support groove, respectively, by pressing the bent portion with a pressing means while the bent portion is inserted at an angle into the fastening portion.
Figure 3d is a cross-sectional view showing a state in which the stainless steel frame and the aluminum frame are fixedly fastened by pressing the fixed piece with a pressing means to deform the fixed piece to unfold and in close contact with the bent portion.
Figure 3e is a cross-sectional view showing a state in which an insulating bar is connected and installed between a pair of stainless steel frames of a composite window frame and a glass window is connected to the composite window frame.
Figure 4a is a cross-sectional view showing a state in which a rounded second protrusion protruding upward is formed at an eccentric point toward the coupling portion of the horizontal fastening piece and serves as a fulcrum for the rotation of the stainless steel frame when the bent piece is pressed by a pressing means. .
Figure 4b is a cross-sectional view showing the horizontally bent piece of Figure 4a being closely supported between the second protrusion and the fixing piece.
Figure 5 is a flow chart of a method for fastening a composite window frame according to the present invention.

Hereinafter, specific details for implementing the composite window frame and its fastening method according to the present invention will be described in detail according to an embodiment with reference to the drawings.

The composite window frame (1) according to an embodiment of the present invention is simple to structure and fasten, and maintains a structurally safe and vibration- and earthquake-resistant combination by firmly fastening the aluminum frame including the insulation and the stainless steel frame on both sides. As can be said, the configuration includes a pair of aluminum frames 100, an insulation material 200, and a pair of stainless steel frames 300.

Referring to FIG. 2b, the pair of aluminum frames 100 are fastened between the upper parts of the pair of stainless steel frames 300, and the insulating material 200 is fastened and the glass window W must be connected and supported, so a predetermined It is made of aluminum section steel that has the strength of and is easy to process and form, and the pair is spaced apart so as to face each other, forming an outdoor frame (100a) and an indoor frame (100b), respectively. That is, the outdoor frame 100a and the indoor frame 100b of the pair of aluminum frames 100 are not attached to each other but are installed separated from each other by a predetermined distance to minimize heat transfer between the inside and outside due to contact. there is.

The pair of aluminum frames 100 is formed with a groove-shaped fastening part 110 on the outside, into which the bent part 320 of the pair of stainless steel frames 300 is inserted and fastened, and a groove-shaped coupling part on the inside. (120) is formed and the insulating material 200 is combined.

In addition, a fixing piece 111 is formed on one side of the open entrance of the fastening part 110 to protrude inside the fastening part 110, and the fixing piece 111 is formed in an approximately "∪" shape to form a horizontal bent piece 322. It can be inserted into this fastening part 110. At this time, when the fixing piece 111 has a "-" shape, the protruding length of the fixing piece 111 must be relatively short in order for the horizontally bent piece 332 to be inserted into the fastening part 110 at an angle. The fixing force for the horizontally bent piece 332 that has been fastened may be reduced with the piece 111. Therefore, if the fixed piece 111 is formed in a “∪” shape, the insertion angle of the horizontal bent piece 332 is similar to that of the fixed piece 111. It is easy to insert the horizontal bent piece 332, and when the fixed piece 111 is pressed with a pressing means, the fixed piece 111 is unfolded and the relatively long length of the fixed piece 111 is fastened to the horizontal bent piece 332. Since it is closely supported, the fastening force and fixation force can be increased. In addition, a fixing protrusion 111a protruding laterally is formed at the inner end of the fixing piece 111, and when the fixing piece 111 is pressed with a pressing means, the fixing piece 111 moves in the horizontal direction within the elastic limit of the aluminum frame. As it unfolds, it comes into close contact with the horizontally bent piece 332, and at this time, the protruding direction of the fixing protrusion 111a is directed downward to press and support the horizontally bent piece 332, so that the fastening force and fixing force can be further increased.

The fastening portion 110 includes a horizontal fastening piece 112 connected in the horizontal direction to the outside of the coupling portion 120, and a vertical fastening piece 113 connected to the tip of the horizontal fastening piece 112 in the upper vertical direction. do. The vertical fastening piece 113 has a first protrusion 113a that protrudes sharply inward at its upper end, and the horizontal fastening piece 112 has a second protrusion 112a that protrudes sharply upward.

Referring to FIG. 2b, the insulation material 200 is coupled between a pair of aluminum frames 100, that is, it is inserted and coupled between the coupling portions 120 of the pair of aluminum frames 100 to form a pair of aluminum frames 100. ) performs an insulation function by connecting between the outdoor frame (100a) and the indoor frame (100b).

Referring to Figure 2a, the pair of stainless steel frames 300 are fastened to both outer sides of the pair of aluminum frames 100 to form an outdoor frame 300a and an indoor frame 300b, respectively, and a pair of aluminum frames 100 are connected to each other. It is formed to be longer in the vertical direction than the frame 100, so that a fastening space 340 is formed between the pair of stainless steel frames 100, and the ends of the glass window W are inserted and connected through the fastening space 340.

The pair of stainless steel frames 300 are formed with a bent portion 320 bent in a “┗” or “┛” shape at the upper end inside the “ㄷ”-shaped main frame 310, and the bent portion 320 is fastened. It is inserted and fastened into the interior of the unit 110 to increase the strength and durability of the composite window frame. In addition, only the vertically bent piece 321 bent in the lower vertical direction is formed at the lower end inside the main frame 310.

In addition, the thermal conductivity of aluminum is generally 196 kcal/℃, whereas the thermal conductivity of stainless steel is only 14 kcal/℃, so the outdoor frame 300a and the indoor frame made of stainless steel are installed on both sides of the pair of aluminum frames 100. The frame 300b is fastened, and an insulating space 330 is provided as an empty space on the inside, and the insulating space 330 is filled with a heat insulator called air to further improve the insulation effect between indoor and outdoor spaces. Condensation phenomenon can be minimized.

The bent portion 320 includes a vertically bent piece 321 bent in the lower vertical direction on the upper part of the main frame 310, and a horizontally bent piece 322 connected to the lower end of the vertically bent piece 321 in the outer horizontal direction. It includes a first support groove (321a) formed on the inner surface of the vertically bent piece 321, and a second support groove (322a) formed on the lower surface of the horizontally bent piece 322, as shown in Figure 3b. When the horizontal bent piece 322 is pressed with a pressing means such as a roller, the vertical fastening piece 113 is temporarily opened outward and elastically deformed, and the bent portion 320 is inserted into the fastening portion 110 and the stainless steel frame 300 is connected. As it rotates in the forward direction and becomes horizontal with the floor, the first protrusion 113a is inserted into the first support groove 321a, and the second protrusion 112a is inserted into the second support groove 322a, as shown in FIG. 3C, and is temporarily The vertical fastening piece 113 elastically deformed returns to its original state.

In addition, referring to Figure 4a as another embodiment, the horizontal fastening piece 112 is formed with a rounded second protrusion 112a protruding upward at a point eccentric toward the coupling portion 120, and is horizontally moved by a pressing means such as a roller. When the bent piece 322 is pressed, it functions as a fulcrum for the rotation of the stainless steel frame 300 and spreads the vertical fastening piece 113 outward with a small force to elastically deform it so that the bent portion 320 becomes the fastening piece 110. By inserting and fastening the stainless steel frame 300 in the forward direction, the first protrusion 113a is inserted and fastened into the first support groove 321a as shown in FIG. 4b, and the horizontal bent piece 322 is connected to the second protrusion 112a. The vertical fastening piece 113, which is supported in close contact with the fixing piece 111 and is temporarily elastically deformed, returns to its original state.

In this way, the first protrusion 113a, the second protrusion 112a, and the fixing piece 111 of the aluminum frame 100 fix and support the bent portion 320 of the stainless steel frame 300 in multiple ways, according to the present invention. Composite window frames have increased structural safety and can maintain a bond that is resistant to vibration and earthquakes, preventing them from flowing, misaligning, or separating even when external forces such as wind, vibration, or earthquake occur in various directions.

Referring to FIG. 2C, the composite window frame 1 according to the present invention may further include an “H” shaped insulating bar 400 installed by connecting a pair of stainless steel frames 300. The insulation bar 400 is made of PVC or polyamide and has excellent strength and elasticity, and is inserted into the main frame 310 of the stainless steel frame 300 and installed in the vertical direction. , Connecting the vertical insulation bars 410 on both sides in the horizontal direction and including a horizontal insulation bar 420 disposed on the lower side of the aluminum frame 100, the upper and lower ends of the vertical insulation bars 410 are bent in the horizontal direction. A coupling piece 411 is provided that is in close contact with the inner surface of the vertically bent piece 321 formed at the upper and lower portions of the main frame 310, respectively. This prevents the pair of stainless steel frames 300 from collapsing or opening, and in particular prevents the stainless steel frames 300 from rotating in the reverse direction due to external force, thereby preventing the pair of stainless steel frames 300 from loosening and supporting the stainless steel frame 100 from loosening. Since an aluminum frame with high thermal conductivity is not additionally installed at the bottom of the steel frame 300, the thermal conductivity is low, so insulation is excellent, and the temperature difference between indoor and outdoor is small, so condensation can be minimized.

Hereinafter, with reference to drawings such as FIG. 5, specific details for implementing the method for fastening a composite window frame according to the present invention will be described in detail with reference to an embodiment.

First, prepare a pair of aluminum frames 100 connected by an insulating material 200, a pair of stainless steel frames 300 and an insulating bar 400 having bent portions 320, respectively.

As shown in Figure 3a, the first step (S10) is performed to insert the bent portion 320 of the pair of stainless frames 300 into the fastening portion 110 of the pair of aluminum frames 100 at an angle. In this way, when the bent portion 320 is inserted into the fastening portion 110, the stainless steel frame 300 is also tilted at an angle, and in this state, what is inserted into the fastening portion 110 is the horizontal bent piece 321, The lower end of the vertically bent piece 322 is blocked by the first protrusion 113a of the vertical fastening piece 113.

After performing the first step (S10), a pressing means is placed on the bent portion 320 as shown in FIG. 3b and the vertical fastening piece 113 of the fastening portion 110 is moved by pressing the bent portion 320 with the pressing means. A second step (S20) is performed in which the bent portion 320 is temporarily opened outward and elastically deformed, and the bent portion 320 is inserted and fastened to the fastening portion 110 and the stainless steel frame 300 rotates.

That is, in a state where a pair of aluminum frames 100 connected to the insulation material 200 are fixed with a fixing means such as a jig, a pressing means is placed on the bent portion 320, and the pressing means is inserted into the fastening portion 110 at an angle. When the bent piece 322 is pressed, the vertical fastening piece 113 of the fastening portion 110 temporarily opens outward and is elastically deformed by the pressure, and the stainless steel frame 300 rotates in the forward direction and at the same time the vertical bent piece ( Since the bent portion 320 including 321 and the horizontal bent piece 322 is inserted into the fastening portion 110, fastening can be easily performed.

As the second step (S20) is performed, the stainless steel frame 300 rotates in the forward direction and becomes horizontal with the floor, and the protruding inside of the vertical fastening piece 113 of the fastening part 110 as shown in Figure 3c. The first protrusion 113a is inserted into the first support groove 321a formed on the inner surface of the vertical bent piece 321 of the bent portion 320, and is directed to the upper side of the horizontal fastening piece 112 of the fastening portion 110. A third step (S30) is performed in which the protruding second protrusion 112a is inserted into the second support groove 322a formed on the lower surface of the horizontally bent piece 322, and thus the stainless steel frame 300 is an aluminum frame. It is firmly fastened to (100), which increases the fastening force and fixation force, and increases strength and durability, making it possible to maintain a structurally safe assembly that is resistant to vibration and earthquakes.

And, referring to FIG. 3D, when a pressing means is placed on the fixing piece 111 and the fixing piece 111 is pressed with the pressing means, the fixing piece 111 is deformed and comes into close contact with the bent portion 320, forming the stainless steel frame 300. ) and the aluminum frame 100 are performed in the fourth step (S40). At this time, the fixing piece 111, which is roughly in the shape of "∪", is pressed by the pressing means and is straightened almost straight within the elastic limit of the aluminum frame to support it in close contact with the upper surface of the fastened horizontal bent piece 332, The fixing protrusion 111a, which protrudes from the side of the fixing piece 111, is changed to the downward direction by the pressing means and presses and supports the horizontal bent piece 332, so the fastening force and fixing force are increased, and the stainless steel frame (300) and the aluminum frame (100) do not move and can be fixedly fastened to each other without any clearance.

In this way, the first protrusion 113a, the second protrusion 112a, and the fixing piece 111 of the aluminum frame 100 fix and support the bent portion 320 of the stainless steel frame 300 in multiple ways, according to the present invention. Composite window frames have increased structural safety and can maintain a bond that is resistant to vibration and earthquakes, preventing them from flowing, misaligning, or separating even when external forces such as wind, vibration, or earthquake occur in various directions.

Next, referring to Figure 3e, the fifth step (S50) is performed to connect and install the "H" shaped insulating bar 400 between a pair of stainless steel frames 300. This supports the pair of stainless steel frames 300 from being compressed or opened, and in particular prevents the stainless steel frames 300 from rotating in the reverse direction due to external force, preventing them from loosening their connection with the aluminum frame 100. Insulation is also increased, and since there is no need to additionally install an aluminum frame with high thermal conductivity at the bottom of the stainless steel frame 300, thermal conductivity is low, so insulation is excellent, and the temperature difference between indoor and outdoor is small, thereby minimizing condensation.

Next, the sixth step (S60) of connecting the glass window (W) to the composite window frame (1) is performed. For example, the end of the glass window W can be inserted and connected into the fastening space 340 provided between a pair of stainless steel frames 300 that are formed to be longer in the vertical direction than the pair of aluminum frames 100.

In the end, the composite window frame (1) and its fastening method according to the present invention have a simple structure, the stainless steel frame is firmly fastened to the aluminum frame, thereby increasing fastening force and fixation force, easy fastening, and increased strength and durability. It is structurally safe and can maintain a combination that is strong against vibration and earthquakes. It has low thermal conductivity, so it has excellent insulation, and the temperature difference between indoors and outdoors is small, so condensation can be minimized. Insulating bars are fastened to the stainless steel frame to form a pair of stainless steel frames. This prevents the stainless steel frame from collapsing or opening, and in particular prevents the stainless steel frame from rotating in the reverse direction due to external force, thereby preventing the connection from loosening with the aluminum frame and increasing insulation properties.

In the present invention, the above embodiment is an example and the present invention is not limited thereto. Anything that has substantially the same structure as the technical idea described in the claims of the present invention and achieves the same effect is included in the technical scope of the present invention.

1. Composite window frame
100. Aluminum frame
100a. Outdoor side frame
100b. indoor frame
110. Fastening part
111. Fixed piece
111a. fixed protrusion
112. Horizontal fastening piece
112a. 2nd protuberance
113. Vertical fastening piece
113a. 1st process
120. Joint
200. Insulation
300. Stainless steel frame
300a. Outdoor side frame
300b. indoor frame
310. Main frame
320. Bending part
321. Vertical bending piece
321a. 1st support groove
322. Horizontal bending
322a. 2nd support groove
330. Insulated space
340. Fastening space
400. Insulating bar
410. Vertical insulating bar
411. Combination
420. Horizontal insulating bar
W. Glass window

Claims (7)

It is fastened between the upper parts of a pair of stainless steel frames and arranged to be spaced apart so as to face each other. A groove-shaped fastening part is formed on the outside, and a fixing piece is formed on one side of the open entrance of the fastening part to protrude inside the fastening part, and a groove-shaped fastening part is formed on the inside. A pair of aluminum frames with a joint formed thereon; An insulating material that is inserted into the joint and connects a pair of aluminum frames to perform an insulating function; A pair of stainless steel frames that are fastened to both sides of a pair of aluminum frames, have a bent portion bent in a "┗" or "┛" shape at the upper end of the inner side, and the bent portion is inserted and fastened to the fastening portion; And an “H” shaped insulating bar installed by connecting a pair of stainless steel frames,
After inserting the bent part into the fastening part at an angle and pressing the bent part with the pressing means, the stainless steel frame rotates so that it is level with the floor. Then, when the fixing piece is pressed with the pressing means, the fixing piece is deformed and comes into close contact with the bent part, thereby connecting the stainless steel frame and aluminum. The frame is fixed and fastened,
The insulating bar includes a vertical insulating bar inserted inside the main frame of the stainless steel frame and installed in the vertical direction, and a horizontal insulating bar connecting the vertical insulating bars on both sides in the horizontal direction and disposed below the aluminum frame, the vertical insulating bar A composite window frame characterized in that the upper and lower ends are bent in the horizontal direction and provided with a joining piece that is in close contact with the inner surface of the vertically bent pieces formed at the upper and lower portions of the main frame, respectively.
According to clause 1,
The fastening part includes a horizontal fastening piece connected to the coupling part in a horizontal direction, and a vertical fastening piece connected to the tip of the horizontal fastening piece in an upper vertical direction, and the vertical fastening piece has a first protrusion protruding inward at the upper end,
The bent portion includes a vertically bent piece bent in the lower vertical direction at the top of the main frame, and a horizontally bent piece connected to the lower end of the vertically bent piece in an outer horizontal direction, and a first support groove is formed on the inner surface of the vertically bent piece. When the bent part is pressed with a pressing means, the vertical fastening piece is temporarily opened outward and elastically deformed, and the bent part is inserted into the fastening part and fastened, and the stainless steel frame rotates to become horizontal with the floor, and the first protrusion is inserted into the first support groove. composite window frame.
According to clause 2,
The horizontal fastening piece has a rounded second protrusion protruding upward at a point eccentric toward the coupling portion, which functions as a fulcrum for the rotation of the stainless steel frame when the bent piece is pressed by a pressing means, and the horizontal bending piece is connected to the second protrusion. A composite window frame characterized in that it is closely supported between fixing pieces.
According to clause 2,
The horizontal fastening piece has a second protrusion protruding upward, and the horizontal bending piece has a second support groove formed on the lower surface. When the bent portion is pressed with a pressing means, the vertical fastening piece temporarily opens outward and is elastically deformed and bent. A composite window frame characterized in that the second protrusion is inserted into the second support groove as the stainless steel frame is rotated to become horizontal with the floor and inserted into the additional fastening part.
According to clause 2,
The fixing piece has a "∪" shape so that a horizontally bent piece can be inserted into the fastening part, and a fixing protrusion protruding sideways is formed at the inner end,
A composite window frame characterized in that when the fixing piece is pressed with a pressing means, the fixing piece unfolds in the horizontal direction and comes into close contact with the horizontally bent piece, and the fixing protrusion presses and supports the horizontally bent piece.
In the method of fastening the composite window frame of claim 1,
A first step of inserting the bent portion of a pair of stainless steel frames into the fastening portion of a pair of aluminum frames at an angle;
A second step of placing a pressing means on the bent part and pressing the bent part with the pressing means so that the vertical fastening piece of the fastening part temporarily opens outward and is elastically deformed so that the bent part is inserted into the fastening part and rotates the stainless steel frame;
As the stainless steel frame rotates and becomes horizontal with the floor, the first protrusion protruding inside the vertical fastening piece of the fastening part is inserted into the first support groove formed on the inner surface of the vertical bending piece of the bending part, and protrudes to the upper side of the horizontal fastening piece of the fastening part. A third step in which the second protrusion is inserted into the second support groove formed on the lower surface of the horizontally bent piece;
A fourth step of arranging a pressing means on the fixed piece, and pressing the fixed piece with the pressing means, so that the fixed piece is deformed and comes into close contact with the bent portion so that the stainless steel frame and the aluminum frame are fixedly coupled;
A fifth step of connecting and installing an insulating bar between a pair of stainless steel frames; and
A method of fastening a composite window frame including a sixth step of connecting a glass window to the composite window frame.
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