KR20220006712A - Corner fastening structure of window frame and corner fixing method of window frame - Google Patents

Abstract

The present invention provides a corner fastening structure of a window frame and a corner fixing method of a window frame, comprising a vertical groove part, a vertical support protrusion piece, a first connection part, a vertical bending support piece, and a vertical fixing hole. By improving the corner fixing force of an outer frame of a window using a corner piece with an improved structure, when the outer frame of the window is assembled with each other, shake and twist should not occur not only in the vertical and horizontal directions, but also in the forward and backward directions. Even if excessive force is applied to a corner clamper used to fix the outer frame and corner piece, the effect of preventing shaking and twisting of the outer frame in the vertical direction, left and right directions, and front and rear directions can be continuously maintained, thereby capable of improving workability and product quality during construction.

Description

CORNER FASTENING STRUCTURE OF WINDOW FRAME AND CORNER FIXING METHOD OF WINDOW FRAME

The present invention relates to a corner fastening structure of a window frame and a method for fixing a corner of a window frame using such a corner fastening structure. When the outer frame of the window is assembled with each other, shaking and twisting are prevented not only in the vertical and horizontal directions, but also in the front and rear directions. The corner fastening structure of the window frame and the corner of the window frame that can increase the workability during construction and improve the quality of the product by continuously maintaining the effect of preventing shaking and twisting in the vertical, left and right directions and front and rear directions of the frame It is about fixing method.

In general, a window plays a role of letting outside light into the room and a role of properly ventilating the indoor air by introducing outside air. play a role in maintaining

Looking at the basic structure of such a window, the outer frame divided into a vertical frame and a horizontal frame is connected to each other to form a frame, and it is composed of a window frame and a glass window coupled to the window frame.

And, the outer frame is divided into a product made of a corner joint of a vertical frame and a horizontal frame of 90° and a product inclined at 45°. However, products with a 90° corner joint of the outer frame are dull and not beautiful in appearance.

Referring to FIG. 1, in the conventional structure for assembling an external frame in which a vertical frame and a horizontal frame are inclined at 45°, the vertical frame 10 and the horizontal frame 20, the ends of which are inclined at 45°, are in close contact with each other. As much as possible, the corner piece 30 of the "L" shape is applied to the corner, and then the corner piece 30 is fixed to the vertical frame 10 and the horizontal frame 20 using a corner clamping machine.

A method of fixing the corner piece will be described in more detail with reference to FIGS. 2 to 4 .

As shown in FIG. 2 , the corner piece 30 has a vertical bar 40 fitted into the vertical inner groove 12 of the vertical frame 10 and a horizontal bar 40 fitted into the horizontal inner groove 22 of the horizontal frame 20 , as shown in FIG. It is divided by a bar (50). And at least one vertical locking groove 42 penetrating in the width direction is formed on the outer surface of the vertical bar 40, and at least one horizontal locking groove 52 penetrating in the width direction is formed on the outer surface of the horizontal bar 50. More than one is formed.

These corner pieces 30 are coupled to fit into the vertical internal groove 12 of the vertical frame 10 and the horizontal internal groove 22 of the horizontal frame 20 to fit the corners of the vertical frame 10 and the vertical frame 10 . Then, as shown in FIGS. 3 and 4, using a known corner clamping machine for fixing the corner piece, the vertical frame 10 is positioned corresponding to the vertical locking groove 42 and the horizontal locking groove 52. ) and a part of the horizontal frame 20 is pressed. Then, as the pressed portion is cut, a vertical bending hooking piece 14 is formed on the vertical frame 10 and caught in the vertical locking groove 42, and a horizontal bending hooking piece 24 is formed on the horizontal frame 20 to form a horizontal hook It is caught in the groove 52, whereby the vertical frame 10 and the horizontal frame 20 are fixedly assembled with each other.

However, when assembling the outer frame of the window so that the vertical frame 10 and the horizontal frame 20 are fixed to each other by the corner piece 30 in this way, the corner piece 30 forms the vertical inner groove of the vertical frame 10 . A predetermined gap (G) is formed as shown in FIG. 5 to fit well into the horizontal inner groove (22) of the (12) and the horizontal frame (20). Even after fixing by (30), there is a problem in that shaking and torsion occur in the front-rear direction.

That is, in the outer frame of the window, the vertical bending stopping piece 14 is caught in the vertical stopping groove 42 so as not to be shaken and twisted in the vertical direction, and the horizontal bending stopping piece 24 is caught in the horizontal stopping groove 52 . It catches it and holds it so that it does not shake or twist in the left and right directions, but since it has a structure in which the vertical locking groove 42 and the horizontal locking groove 52 penetrate in the front and rear directions, the vertical bending hooking piece 14 and the horizontal bending hook Since there is no structure to hold the piece 24 in the front-rear direction, there is a problem in that the window frame is shaken and twisted in the front-rear direction, resulting in defective products.

In addition, since the vertical bar 40 and the horizontal bar 50 of the corner piece 100 have an empty structure, inside the vertical bar 40 in the portion where the vertical locking groove 42 is formed, there is a vertical side reinforcement. (44) is formed to be inclined in the same direction as the direction in which the corner clamper operates, and in the horizontal bar 50 in the portion where the horizontal locking groove 52 is formed, the horizontal reinforcing rib 54 is formed in the direction in which the corner clamper operates and formed to be inclined in the same direction.

That is, the vertical reinforcing rib 44 is formed at the end of the vertical engaging groove 42 corresponding to the position at which the vertical bending hooking piece 14 is bent, and the horizontal reinforcing rib 54 is the horizontal bending stopping piece 24 ) is formed at the end of the horizontal locking groove 52 corresponding to the bent position.

By the way, when pressing a part of the vertical frame 10 or the horizontal frame 20 using a corner clamping machine to form the vertical bending stopping piece 14 or the horizontal bending stopping piece 24, the vertical side reinforcement 44 or Since the strength of the end of the vertical locking groove 42 or the horizontal locking groove 52 is strong by the horizontal reinforcing rib 54, the vertical locking piece is precisely bent at the end of the vertical locking groove 42 or the horizontal locking groove 52. (14) Alternatively, a phenomenon occurs in which the horizontal bending stopping piece 24 is not bent and bouncing, and this causes an error because the position is shifted when forming the vertical bending stopping piece 14 or the horizontal bending stopping piece 24 through the corner clamping machine. There was a problem that occurred.

In order to solve this problem, some techniques such as Prior Document 1 are disclosed.

6 to 9, in the corner piece 100 of Prior Document 1, a vertical bar 110 and a horizontal bar 120 are formed at right angles, and a vertical locking groove 112 on the outer surface of the vertical bar 110. is formed, and a horizontal locking groove 122 is formed on the outer surface of the horizontal bar 120 . Here, the vertical bar 110 is assembled to be fitted into the vertical inner groove 12 of the vertical frame 10 , and the horizontal bar 120 is assembled to be inserted into the horizontal inner groove 22 of the horizontal frame 20 .

And the vertical bending locking piece 14 is bent in the vertical locking groove 112 of the vertical bar 110 of the corner piece 100 to form a vertical locking protrusion piece 114 at the opposite end of the bent part. 114 inserts the vertical frame 10 into the vertical bar 110 and presses a portion of the vertical frame 10 to form the vertical bending hooking piece 14, a portion of the vertical blocking protrusion 114 is vertically bent It is cut and bent while being pressed together by the end of the piece 14 so that the vertical cut and bent portion 114-1 is formed to be bent between the vertical locking protrusions 114-2.

Accordingly, the vertical incision bent portion 114-1 is bent between the vertical locking protrusions 114-2, so that the vertical bending stopping pieces 14 between the vertical stopping protrusions 114-2 and the vertical stopping protrusions 114-2 are bent. ) is inserted to form a hanging space.

In addition, in the horizontal locking groove 122 of the horizontal bar 120 of the corner piece 100, the horizontal bending locking piece 24 is bent and a horizontal locking protrusion piece 124 is formed at the opposite end of the bent part. When the piece 124 inserts the horizontal frame 20 into the horizontal bar 120 and presses a portion of the horizontal frame 20 to form the horizontal bending hooking piece 24, a portion of the horizontal blocking protrusion piece 124 is horizontally bent. It is cut and bent while being pressed together by the end of the locking piece 24 so that the horizontal cut-out bent portion 124-1 is formed to be bent between the horizontal locking protrusions 124-2.

Accordingly, the horizontal cut-and-bend portion 124-1 is bent between the horizontal locking protrusions 124-2, and the horizontal bending locking pieces 24 between the horizontal locking protrusions 124-2 and the horizontal locking protrusions 124-2. ) is inserted to form a hanging space.

With this structure, when the vertical locking protrusion piece 114 is formed in the vertical locking groove 112 of the corner piece 100 and a portion of the vertical frame 10 is pressed to form the vertical bending locking piece 14, the vertical locking protrusion piece A part of (114) is cut and bent while being pressed together by the end of the vertical bending locking piece 14, so that the vertical incision and bent part 114-1 is automatically bent between the vertical locking protrusions 114-2, When the vertical bending locking piece 14 is bent, it is caught between the vertical locking projections 114-2 and fixed so as not to move back and forth.

And, when the horizontal locking protrusion piece 124 is formed in the horizontal locking groove 122 of the corner piece 100, a part of the horizontal frame 20 is pressed to form the horizontal bending locking piece 24, the horizontal locking protrusion piece 124. A part of is cut and bent while being pressed together by the end of the horizontal bending hooking piece 24, so that the horizontal cutting and bending part 124-1 is automatically bent between the horizontal stopping protrusions 124-2, so that the horizontal bending hook When the piece 24 is bent, it is caught between the horizontal stopping protrusions 124-2 and is fixed so as not to move back and forth.

Therefore, when the outer frame of the window is assembled, the end of the vertically bent hooking piece 14 is in close contact with the vertical cut bent portion 114-1 to press the vertical cut bent portion 114-1, so the outer frame of the window is no longer shaken and twisted in the vertical direction, and the end of the horizontal bending hooking piece 24 is in close contact with the horizontal cutting bent part 124-1 to press the horizontal cutting bent part 124-1, so the window frame does not cause shaking and twisting in the left and right direction, and the vertical bending locking piece 14 is caught and supported by the vertical locking protrusion 114-2 between the vertical locking projections 114-2, and the horizontal bending locking piece 24 Since the horizontal locking projections 124-2 are caught and supported between the horizontal locking projections 124-2, the outer frame of the window does not shake or twist in the front-rear direction.

However, as in FIG. 10 , this structure uses a corner clamping machine to press a part of the vertical frame 10 to form the vertical bending hooking piece 14 or press a part of the horizontal frame 20 to press the horizontal bending hooking piece 24 ) when the pressing force is too much and the entry depth of the three corner clamping machine is too deep, the vertical bending hooking piece 14 or the horizontal bending stopping piece 24 is bent too much inward, and the vertical bending bending part 114-1 ) or is not supported by the horizontal incision/bend portion 124-1.

Accordingly, the vertical bending stopping piece 14 or the horizontal bending stopping piece 24 is positioned inside each of the vertical cutting and bending parts 114-1 or 124-1, respectively, and the vertical bending stopping pieces 14 ) is not caught on the vertical stopping protrusion 114-2 between the vertical stopping protrusions 114-2, and the horizontal bending stopping piece 24 is a vertical stopping protrusion 124 between the horizontal stopping protrusions 124-2. -2), so that the vertical locking protrusion 114-2 does not fix the vertical bending stopping piece 14, and the horizontal stopping protrusion 124-2 does not fix the horizontally bending stopping piece 24, Shaking and torsion in the front-rear direction of the outer frame of the window still occurs, and in severe cases, there is a problem in that the outer frame is pulled out in the front-rear direction.

Domestic registered patent 10-1420367

An object of the present invention is to improve the structure of the corner piece so that when the vertical frame and the horizontal frame forming the outer frame of the window are fixed to each other through the corner piece using a corner clamping machine, the outer frame of the window can be moved in the vertical direction and To prevent wobbling and torsion not only in the left and right directions but also in the front and rear directions, and even if excessive force is applied to the corner clamping machine used to fix the outer frame and the corner piece, To provide a corner fastening structure of a window frame and a method of fixing the corner of a window frame so that the effect of preventing shaking and torsion can be maintained continuously, thereby reducing defect factors during construction, increasing workability and improving product quality have.

One aspect of the present invention is a corner of a window frame comprising an outer frame including a vertical frame and a horizontal frame, and a corner piece in which a vertical member fitted to the vertical frame and a horizontal member fitted to the horizontal frame are connected at right angles. In the fastening structure, the vertical member, the vertical groove formed including a vertical bottom surface and first and second inclined surfaces on the outer surface; a vertical support protrusion disposed inwardly at a predetermined distance from the vertical bottom surface; a first connection part connecting a portion connected to a first inclined surface of the vertical bottom surface and one end of the vertical support protrusion piece; a vertical bending support piece formed to be supported on the vertical support protrusion piece by cutting and inwardly bending a portion of the vertical bottom surface; and a vertical fixing hole formed in a portion in which the vertical bending support piece is cut out of the vertical bottom surface. Including, wherein the horizontal member, a horizontal groove formed including a horizontal bottom surface and third and fourth inclined surfaces on the outer surface; a horizontal support protrusion which is arranged at a predetermined distance from the horizontal floor surface inwardly; a second connection part connecting a portion connected to a third inclined surface of the horizontal floor surface and one end of the horizontal support protrusion piece; a horizontal bending support piece formed to be supported on the horizontal support protrusion piece by cutting and bending a part of the horizontal bottom surface inward; and a horizontal fixing hole formed in a portion in which the horizontal bending support piece is cut out of the horizontal bottom surface; Including, the vertical frame includes a vertical bending hook piece formed to be inserted into and caught in the vertical fixing hole by cutting and bending a part of the outer plate inward, and the horizontal frame cuts a part of the outer plate and the inside A corner fastening of a window frame fixed to the outer frame so that the corner piece does not move in the up-down direction, left-right direction, and front-rear direction provide structure.

According to a preferred feature of the present invention, the first connecting portion may be formed to be inclined to connect the outer and inner surfaces of the vertical member in a direction intersecting the direction in which the vertical bending hook piece is bent, and the second connecting portion is the It may be formed to be inclined to connect the outer surface and the inner surface of the horizontal member in a direction intersecting the direction in which the horizontal bending catch piece is bent.

According to a preferred feature of the present invention, the thickness of the vertical bottom surface may be formed to be thinner than the thickness of the outer surface of the vertical member and the thickness of the vertical support protrusion, and the thickness of the horizontal bottom surface is the thickness of the horizontal member. It may be formed thinner than the thickness of the outer surface and the thickness of the horizontal support protrusion.

According to a preferred feature of the present invention, in the vertical member, a plurality of the vertical groove portion, the vertical support protrusion piece and the first connection portion may be provided at predetermined intervals in the vertical direction, and the horizontal member includes the horizontal groove portion and the horizontal portion. A plurality of support protrusions and the second connecting portion may be provided at a predetermined interval in the left and right directions.

Another aspect of the present invention is a corner of a window frame comprising an outer frame including a vertical frame and a horizontal frame, and a corner piece in which a vertical member fitted to the vertical frame and a horizontal member fitted to the horizontal frame are connected at right angles. In the fastening structure, the vertical member, the first groove portion formed including fifth and sixth inclined surfaces on the outer surface; a vertical protruding piece protruding in the left and right directions from the fifth inclined surface; a first cutout formed to be supported on the fifth inclined surface by cutting and inwardly bending a portion of the vertical protrusion; and a first fixing groove formed in a portion in which the first cutout is cut out of the vertical protruding piece. Including, wherein the horizontal member includes: a second groove portion formed including seventh and eighth inclined surfaces on the outer surface; a horizontal protruding piece protruding in the left and right directions from the seventh inclined surface; a second cutout formed to be supported on the seventh inclined surface by cutting and inwardly bending a portion of the horizontal protrusion; and a second fixing groove formed in a portion in which the second cutout is cut out of the horizontal protruding piece. Including, wherein the vertical frame includes a first bent hooking piece formed to be inserted into and caught in the first fixing groove by cutting and bending a part of the outer plate inward, and the horizontal frame cuts a part of the outer plate and a second bent locking piece formed to be bent inwardly and inserted into the second fixing groove to be caught, wherein the corner piece is fixed to the outer frame so as not to move in the vertical direction, the left-right direction, and the front-rear direction. Provides a corner fastening structure of the frame.

According to a preferred feature of the present invention, the corner fastening structure of the window frame of the present invention includes a third connecting portion inclined to connect the end of the fifth inclined surface and the inner surface of the vertical member, and the end of the seventh inclined surface and It may further include a fourth connecting portion inclined to connect the inner surface of the horizontal member.

Another aspect of the present invention is a method for fixing a corner of a window frame using an outer frame including a vertical frame and a horizontal frame, and a corner piece in which the vertical member and the horizontal member are connected at right angles, the vertical member is an outer surface A vertical groove portion including a vertical bottom surface and first and second inclined surfaces is formed in the vertical member, and vertical support protrusions are disposed inside the vertical member at a predetermined distance from the vertical floor surface, the first inclined surface of the vertical floor surface A first connecting portion connects a portion connected to and one end of the vertical support protrusion, and the horizontal member is formed with a horizontal groove portion including a horizontal bottom surface and third and fourth inclined surfaces on an outer surface of the horizontal member. A horizontal support protrusion is arranged at a predetermined distance from the horizontal floor surface inward, and a second connection part connects a portion connected to a third inclined surface of the horizontal floor surface and one end of the horizontal support protrusion, and the vertical member is Inserted into the vertical inner groove of the vertical frame, the horizontal member is inserted into the horizontal inner groove of the horizontal frame so that the corners of the vertical frame and the horizontal frame are in close contact, and then using a corner clamping machine to fix the corner piece. By pressing a portion of the outer plate of the vertical frame and a portion of the outer plate of the horizontal frame at positions corresponding to the vertical groove and the horizontal groove, the pressed portion of the outer plate of the vertical frame is cut and bent inwardly and vertically bent A hooking piece is formed, and the vertical bending stopper is pressed on the vertical bottom surface while the pressed part of the vertical bottom surface is cut and bent inward to form a vertical bending support piece. Among the vertical bottom surfaces, the vertical bending support piece is cut A vertical fixing hole is formed, and while the end of the vertically bent support piece is supported by the vertical support protrusion, the vertical bent hooking piece is inserted into the vertical fixing hole and then caught, so that the vertical member is attached to the vertical frame in the vertical direction and in the front and rear directions. It is fixed immovably, and the pressed part of the outer plate of the horizontal frame is cut and bent inwardly to form a horizontal bending hooking piece, and the horizontal bending hooking piece presses the horizontal bottom surface and the pressed part of the horizontal bottom surface is cut As the horizontal bending support piece is formed by bending inward, a horizontal fixing hole is formed in a portion where the vertical bending support piece is cut out of the horizontal bottom surface, and the end of the horizontal bending support piece is supported by the horizontal support protrusion while the horizontal bending A locking piece is inserted into the horizontal fixing hole and then caught so that the horizontal member is fixed to the horizontal frame without moving in the left and right and front and rear directions, and the vertical frame and the horizontal frame are fixedly assembled with each other. to provide.

According to a preferred feature of the present invention, the vertical member and the horizontal member of the corner piece have a structure with an empty interior, and inside the vertical member, the first connecting portion intersects the direction in which the vertical bending hooking piece is bent. may be formed to be inclined to connect the outer surface and the inner surface of the vertical member in the direction, and in the inside of the horizontal member, the second connecting portion is outside of the horizontal member in a direction crossing the direction in which the horizontal bending hook piece is bent It is inclined to connect the side surface and the inner surface, and when the vertical fixing hole and the horizontal fixing hole are formed, the first and second connecting parts support the end of the vertically bent support piece and the end of the horizontally bent support piece, respectively. It is possible to prevent the vertical bending engaging piece and the horizontal bending engaging piece from being pressed by more than a predetermined angle.

When the corner fastening structure of the window frame according to the present invention is applied, the structure of the corner piece is improved, so that the vertical and horizontally bent and bent pieces of the vertical frame and the horizontal frame are inserted into the vertical support hole and the horizontal support hole, respectively. And since it is firmly fixed to the corner piece in such a way that it is supported by the horizontal support protrusions, when the outer frame of the window is assembled, the outer frame of the window does not shake and twist not only in the vertical and left and right directions, but also in the front and rear directions. , so that even if excessive force is applied to the corner clamping machine used to fix the outer frame and the corner piece, the effect of preventing shaking and twisting of the outer frame in the up-down, left-right, and front-rear directions can be maintained. It has the effect of improving overall product quality, such as greatly increasing workability by reducing defect factors and increasing the durability of corner pieces.

1 is a front view of a window frame shown to explain the assembly structure of an outer frame of a general window.
2 is a perspective view showing a conventional corner piece.
3 is a partially cut-away perspective view showing a state in which the outer frame of the window is assembled using a conventional corner piece.
4 is a partial cross-sectional view showing a state in which the outer frame of the window is assembled using a conventional corner piece.
5 is a view illustrating a problem that occurs when assembling the outer frame of a window using a conventional corner piece.
6 is a perspective view showing another conventional corner piece.
7 is a partially cut-away perspective view showing a state in which the outer frame of the window is assembled using another conventional corner piece.
8 is a partial cross-sectional view showing a state in which the outer frame of the window is assembled using another conventional corner piece.
9 is a perspective view showing only the corner piece from FIG. 8 and viewed from another angle.
10 is a partial cross-sectional view showing a problem that occurs when assembling the outer frame of the window using another conventional corner piece.
11 is a perspective view showing a corner piece according to the present invention.
12 is a partial cross-sectional view showing a state in which the corner piece of FIG. 11 is coupled to the vertical frame and the horizontal frame of the outer frame.
13 is a partially cut-away perspective view illustrating a state in which the vertical member of the corner piece and the vertical frame of the outer frame are coupled according to the present invention.
14 is a partially cut-away perspective view illustrating a state in which the horizontal member of the corner piece and the horizontal frame of the outer frame are coupled according to the present invention.
15 is a perspective view showing the shape before the vertical bending support piece, the vertical fixing hole, the horizontal bending support piece and the horizontal fixing hole are formed in the corner piece according to the present invention.
Figure 16 is a partial cross-sectional view for explaining the corner fixing method of the window frame according to the present invention.
17 is a perspective view showing a corner piece according to another embodiment of the present invention.
18 is a partial cross-sectional view showing a state in which the corner piece of FIG. 17 is coupled to the vertical frame and the horizontal frame of the outer frame.
19 is a partially cut-away perspective view for showing a state in which the vertical member of the corner piece and the vertical frame of the outer frame are combined according to another embodiment of the present invention.
20 is a partially cut-away perspective view illustrating a state in which the horizontal member of the corner piece and the horizontal frame of the outer frame are coupled according to another embodiment of the present invention.
21 is a perspective view illustrating a shape before a first cutout, a first fixing groove, a second cutout, and a second fixing groove are formed in a corner piece according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

In addition, the embodiments of the present invention are provided in order to more completely explain the present invention to those with average knowledge in the art.

Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer description, and elements indicated by the same reference numerals in the drawings are the same elements. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, in the entire specification, 'including' a certain element means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

The window frame corner fastening structure according to the present invention improves the structure of the corner piece so that when the outer frame of the window composed of a vertical frame and a horizontal frame is fixedly assembled, the outer frame of the window moves in the vertical, left and right directions as well as in the front and rear directions. It also has a feature to prevent shaking and twisting.

11 is a perspective view showing a corner piece according to the present invention, FIG. 12 is a partial cross-sectional view showing a state in which the corner piece of FIG. 11 is coupled to a vertical frame and a horizontal frame of the outer frame, and FIG. 13 is a corner piece according to the present invention. It is a partially cut-away perspective view for showing a state in which the vertical member of the vertical member and the vertical frame of the external frame are combined, and FIG. is a perspective view.

Here, in order to compare and show the structures according to the presence or absence of a vertical bending hook piece and a horizontal bending hook piece, FIGS. 13 and 14 show that only one of the vertical groove part and the horizontal groove part is formed with a vertical bending hook piece and a horizontal bending hook piece, respectively. .

Hereinafter, for convenience of description, in the drawings, the X direction is referred to as the left and right direction with reference to FIG. 1 , the Y direction is referred to as the front-back direction, and the Z direction is referred to as the up-down direction.

11 to 14 , the window frame according to the present embodiment includes an external frame including a vertical frame 10 and a horizontal frame 20 , and a vertical member 210 fitted to the vertical frame 10 and horizontal A corner fastening structure is constituted by including a corner piece 200 made of a horizontal member 220 fitted to the frame 20 .

The vertical frame 10 includes a vertical bending hooking piece 15 formed by cutting and inwardly bending a portion of the outer plate, and the horizontal frame 20 is a horizontal frame formed by cutting and inwardly bending a portion of the outer plate. It includes a bending stopper (25).

The corner piece 200 is formed by connecting the resin member 210 and the horizontal member 220 at a right angle, and may be formed in a substantially ┐ shape with respect to the upper left corner of the outer frame.

The vertical member 210 may be configured to have a structure with an empty interior, and includes an outer surface and an inner surface that are spaced apart from each other facing each other in the X direction.

The vertical member 210 includes a vertical groove portion 212 , a vertical support protrusion piece 213 , a first connection portion 214 , a vertical bending support piece 215 , and a vertical fixing hole 216 .

In addition, in the present embodiment, the vertical member 210 has a plurality of vertical groove portions 212 , vertical support protrusions 213 and a first connecting portion 214 at a predetermined interval in the Z direction of the vertical member 210 . can

At least one such vertical groove portion 212 may be formed on the outer surface of the vertical member 210 at a predetermined interval in the Z direction.

In this embodiment, it is illustrated that two vertical grooves 212 are formed on the outer surface of the vertical member 210 spaced apart in the Z direction, but the present invention is not limited thereto. The vertical groove portion 212 formed on the outer surface may be one or three or more.

Accordingly, in the present embodiment, a total of two vertical support protrusions 213 and first connecting portions 214 may be provided, one for each vertical groove portion 212 .

The vertical groove portion 212 is a portion formed to be recessed in the X direction from the outer surface of the vertical member 210, and extends obliquely from both ends of the vertical bottom surface 212a and the vertical bottom surface 212a in the Z direction, respectively, to the vertical member ( It includes first and second inclined surfaces 212b and 212c) connected to the outer surface of the 210). The vertical groove 212 may have a generally trapezoidal shape when viewed in a Z-Y cross-section.

In addition, the vertical groove portion 212 can be formed to be long in the Y direction so that the operator can easily adjust the position in the Y direction when the operator cuts and bends a part of the vertical frame 10 to be described later to form the vertical bending hooking piece 15 . and, if necessary, both ends in the Y direction from the outer surface of the vertical groove 212 may be opened.

The vertical support protrusion 213 is disposed to face each other in the X direction at a predetermined distance from the vertical bottom surface 212a of the vertical groove 212 on the inside of the vertical groove 212 in the X direction, and to protrude long in the Z direction. formed, and may be formed to be elongated in the Y direction.

In addition, the vertical support protrusion piece 213 is preferably formed longer in the Z direction than the vertical groove portion 212 so that the end protrudes more upward in the Z direction than the second inclined surface 212c of the vertical groove portion 212 .

The first connecting portion 214 is formed to connect one end of the vertical support protrusion piece 213 to a portion connected to the end of the first inclined surface 212b among the vertical bottom surfaces 212a of the vertical groove portion 212 .

The vertical bending support piece 215 is formed such that a portion of the vertical bottom surface 212a is cut and bent inwardly so that an end thereof is supported on the first connecting portion 214 or the vertical support protrusion 213 .

And, a portion cut by the vertical bending support piece 215 from the vertical bottom surface 212a becomes a vertical fixing hole 216 acting as a locking space. The vertical member 210 may be fixed to the vertical frame so that the vertical member 210 does not move in the Z and Y directions while the vertical bending locking piece 15 is inserted and caught in the vertical fixing hole 216 .

In addition, the vertical bottom surface 212a of the vertical groove portion 212 may have a thickness that is thinner than the thickness of the outer surface of the vertical member 210 and the thickness of the vertical support protrusion piece 213 . Accordingly, when the vertical bottom surface 212a is pressed with the vertical bending hook piece 15 to form a vertical bending support piece 215 to be described later, the vertical bottom surface 212a of the vertical groove portion 212 is more easily cut and vertical The bending support piece 215 and the vertical fixing hole 216 can be easily formed.

The horizontal member 220 may be configured to have a structure with an empty interior, and includes an outer surface and an inner surface that are spaced apart from each other facing each other in the Z direction.

In addition, the horizontal member 220 includes a horizontal groove portion 222 , a horizontal support protrusion piece 223 , a second connection portion 224 , a horizontal bending support piece 225 , and a horizontal fixing hole 226 .

In addition, in this embodiment, the horizontal member 220, the horizontal groove portion 222, the horizontal support protrusion piece 223 and the second connection portion 224 are provided in plurality at a predetermined interval in the X direction of the horizontal member 220. can

At least one of these horizontal grooves 222 may be formed on the outer surface of the horizontal member 220 at predetermined intervals in the XZ direction.

In this embodiment, it is shown that two horizontal grooves 222 are formed spaced apart in the X direction on the outer surface of the horizontal member 220, but the present invention is not limited thereto. The horizontal groove portion 222 formed on the outer surface may be one or three or more.

Accordingly, in the present embodiment, a total of two horizontal support protrusions 223 and second connection portions 224 may be provided, one for each horizontal groove portion 222 .

The horizontal groove portion 222 is a portion formed to be recessed in the Z direction from the outer surface of the horizontal member 220, and extends obliquely from both ends of the horizontal floor surface 222a and the horizontal floor surface 222a in the X direction, respectively, to the horizontal member ( It includes third and fourth inclined surfaces 222b and 222c connected to the outer surface of 220 . The horizontal groove 222 may have a generally trapezoidal shape when viewed in a Z-Y cross-section.

In addition, the horizontal groove portion 222 may be formed long in the Y direction to facilitate alignment of the position in the Y direction when the operator cuts and bends a portion of the horizontal frame 20 to be described later to form the horizontal bending hooking piece 25 . If necessary, both ends in the Y direction from the outer surface of the horizontal groove portion 222 may be opened.

The horizontal support protrusion 223 is disposed to face each other in the Z direction at a predetermined distance from the horizontal bottom surface 222a of the horizontal groove 222 on the inside of the horizontal groove 222 in the Z direction, and to protrude long in the X direction. formed, and may be formed to be elongated in the Y direction.

In addition, the horizontal support protrusion piece 223 is preferably formed longer in the X direction than the horizontal groove portion 222 so that the end protrudes more to the right of the X direction than the fourth inclined surface 222c of the horizontal groove portion 222 .

The second connection portion 224 is formed to connect one end of the horizontal support protrusion piece 223 to a portion connected to the end of the third inclined surface 222b among the horizontal bottom surface 222a of the horizontal groove portion 222 .

The horizontal bending support piece 225 is formed such that a part of the horizontal bottom surface 222a is cut and bent inwardly so that the end thereof is supported on the second connection part 224 or the horizontal support protrusion piece 223 .

And, the part cut by the horizontal bending support piece 225 from the horizontal bottom surface 222a becomes the horizontal fixing hole 226 acting as a locking space. As the horizontal bending locking piece 25 is inserted and caught in the horizontal fixing hole 226 , the horizontal member 220 may be fixed to the horizontal frame 20 so as not to move in the X and Y directions.

In addition, the horizontal bottom surface 222a of the horizontal groove portion 222 may have a thickness that is thinner than the thickness of the outer surface of the horizontal member 220 and the thickness of the horizontal support protrusion piece 223 . Accordingly, when the horizontal bottom surface 222a is pressed with the vertical bending hook piece 25 to form the horizontal bending support piece 225 to be described later, the horizontal bottom surface 222a of the horizontal groove portion 222 is cut more easily and horizontally The bending support piece 225 and the horizontal fixing hole 226 can be easily formed.

On the other hand, the first connecting portion 214 may be formed to be inclined so that both ends connect the outer surface and the inner surface of the vertical member 210 in a direction intersecting the direction in which the vertical support protrusion piece 213 is bent, respectively. In addition, the second connecting portion 223 may be formed to be inclined so that both ends connect the outer surface and the inner surface of the horizontal member 220 in a direction intersecting the bending direction of the horizontal support protrusion piece 223 , respectively.

Accordingly, the first and second connecting portions 214 and 224 support the end of the vertically bent support piece 215 and the end of the horizontally bent support piece 225 , respectively, so as to support the vertical bending stopping piece 15 and the horizontally bending stopping piece 25 , respectively. ) can be prevented from being pressed more than a predetermined angle.

Hereinafter, a window frame using an external frame including a vertical frame 10 and a horizontal frame 20 having such a configuration, and a corner piece 200 in which the vertical member 210 and the horizontal member 220 are connected at right angles. How to fix the corner of the will be described.

15 and 16, in this embodiment, first, the vertical member 210 configured as above is inserted into the vertical internal groove 12 of the vertical frame 10 among the external frames of the window, and the horizontal member 10 ) is inserted into the horizontal inner groove 22 of the horizontal frame 20 so that the corners of the vertical frame 10 and the horizontal frame 20 are in close contact with each other.

Thereafter, by pressing a portion of the outer plate of the vertical frame 10 at a position corresponding to the vertical groove 212 using the corner clamping machine C1 for fixing the corner piece 200, one of the outer plates of the vertical frame 10 is pressed. The pressed portion is cut and bent inward in the X direction to form a vertical bending hooking piece (15).

The vertical bending hook piece 15 presses a portion of the vertical bottom surface 212a of the vertical groove portion 212 in the X direction so that the pressed portion of the vertical bottom surface 212a is cut and bent inward in the X direction while the vertical bending support piece (215) to be formed. At this time, a vertical fixing hole 216 is formed in a portion cut by the vertical bending support piece 215 among the vertical bottom surface 212a of the vertical groove portion 212 .

In addition, the first connecting portion 214 extending from the first inclined surface 212b of the vertical groove portion 212 may serve to guide the end of the vertical bending support piece 215 toward the vertical support protrusion piece 212 .

If the vertical bending support piece 215 is continuously pressed with the vertical bending stopping piece 15 using a corner clamping machine, the vertical bending stopping piece 15 and the vertical bending supporting piece 215 are on the vertical supporting protrusion or the first connection part 214. is supported in contact with, and at this time, the vertical bending stopping piece 15 is inserted into the vertical fixing hole 216, and both ends of the vertical bending stopping piece 15 in the Y direction are on the inner surface of the vertical fixing hole 216 in the Y direction. It is in a state of being caught while touching each other, and the vertical member 210 is firmly fixed to the vertical frame 10 in the Z direction as well as in the Y direction so as not to move.

And, by pressing a part of the outer plate of the horizontal frame 20 at a position corresponding to the horizontal groove portion 222 using a corner clamping machine (C2) for fixing the corner piece 200, one of the outer plates of the horizontal frame 20 The pressed portion is cut and bent inward in the Z direction to form a horizontal bending hooking piece 25 .

The horizontal bending hooking piece 25 presses a portion of the horizontal bottom surface 222a of the horizontal groove portion 222 in the Z direction so that the pressed portion of the horizontal bottom surface 222a is cut and bent inward in the Z direction while the horizontal bending support piece (225) to be formed. At this time, a horizontal fixing hole 226 is formed in a portion cut by the horizontal bending support piece 225 among the horizontal bottom surface 222a of the horizontal groove portion 222 .

In addition, the second connection portion 224 extending from the third inclined surface 222b of the horizontal groove portion 222 may serve to guide the end of the horizontal bending support piece 225 toward the horizontal support protrusion piece 223 . .

When the horizontal bending support piece 225 is continuously pressed with the horizontal bending stopping piece 25 using a corner clamping machine, the horizontal bending stopping piece 25 and the horizontal bending supporting piece 225 are placed on the horizontal support protrusion piece 223 or the second connection part. (224) and supported, and at this time, the horizontal bending locking piece 25 is inserted into the horizontal fixing hole 226 so that both ends in the Y direction of the horizontal bending stopping piece 25 are in the Y direction of the horizontal fixing hole 226. It is in a state of being caught while touching the inner surface, and the horizontal member 220 is firmly fixed to the horizontal frame 20 not to move in the X direction as well as in the Y direction.

The conventional window frame corner fastening structure uses a corner clamping machine to press a part of a vertical frame to form a vertical bending hook piece or press a part of a horizontal frame to form a horizontal bending hook piece when the pressing force is too strong, vertical bending As the locking piece or horizontally bent locking piece is bent too much inward, it is not caught on the vertical or horizontal locking protrusion.

Accordingly, since the vertical locking protrusion does not fix the vertical bending locking piece and the horizontal locking projection does not fix the horizontally bent locking piece, the problem of shaking and twisting in the front-rear direction of the outer frame of the window may still occur. In severe cases, the outer frame may fall out in the front-rear direction.

However, according to the present embodiment, even if excessive force is applied to the corner clamping machine used to fix the outer frame and the corner piece, excessive entry of the corner clamping machine is prevented by the vertical support protrusion, the horizontal support protrusion, and the first and second connecting parts. By blocking, the effect of preventing shaking and twisting of the outer frame in the vertical direction, left-right direction, and front-rear direction can be continuously maintained by the coupling structure of the vertical member and the vertical frame and the coupling structure of the horizontal member and the horizontal frame described above.

Therefore, the vertical frame and the horizontal frame of the outer frame are stably and fixedly assembled with each other, and the problem of the conventional window frame corner fastening structure can be prevented. That is, according to the present embodiment, there is no fear that the outer frame may come off from the corner piece in any direction.

At this time, in the inside of the vertical member 210, the first connecting portion 214 is long and inclined to connect the outer surface and the inner surface of the vertical member 210 in a direction that intersects the direction in which the vertical bending catch piece 15 is bent. can be formed.

In addition, in the inside of the horizontal member 220, the second connecting portion 224 is long and inclined to connect the outer and inner surfaces of the horizontal member 220 in a direction intersecting the direction in which the horizontal bending catch piece 25 is bent. can be formed.

Accordingly, when the vertical fixing hole 216 and the horizontal fixing hole 226 are formed, the first and second connecting portions 214 and 224 connect the ends of the vertically bent support piece 215 and the end of the horizontally bent support piece 225 . By supporting each, the vertical bending stopping piece 15 and the horizontal bending stopping piece 25 can be prevented from being pressed by more than a predetermined angle.

Therefore, by improving the durability of the corner piece as a whole, it is possible to prevent the shape of the corner piece from collapsing when the blade cutting a part of the vertical frame or horizontal frame in the corner clamping machine is stabbed from outside the vertical frame or horizontal frame. can

17 is a perspective view showing a corner piece according to another embodiment of the present invention, FIG. 18 is a partial cross-sectional view showing a state in which the corner piece of FIG. 17 is coupled to the vertical frame and the horizontal frame of the outer frame, and FIG. 19 is the present invention A partially cut-away perspective view for showing a state in which the vertical member of the corner piece and the vertical frame of the outer frame are combined according to another embodiment of the present invention, and Figure 20 is a horizontal member of the corner piece and the outer frame according to another embodiment of the present invention It is a partially cut-away perspective view for showing a state in which the horizontal frame is coupled, and FIG. 21 is a corner piece according to another embodiment of the present invention in which a first cutout, a first fixing groove, a second cutout, and a second fixing groove are formed. It is a perspective view showing the shape before becoming.

Hereinafter, a window frame corner fastening structure according to another embodiment of the present invention will be described with reference to FIGS. 17 to 21 . Here, in order to avoid duplication of the same parts as those of the above-described embodiment, detailed descriptions will be omitted.

The window frame according to this embodiment includes an external frame including a vertical frame 10 ′ and a horizontal frame 20 ′, a vertical member 210 ′ fitted to the vertical frame 10 ′, and a horizontal frame 20 ′). A corner fastening structure is constituted by including a corner piece 200 ′ formed of a horizontal member 220 ′ fitted to the .

The vertical frame 10' includes a first bending hooking piece 15' formed by cutting and inwardly bending a portion of the outer plate, and the horizontal frame 20' cuts and inwardly bends a portion of the outer plate. and a second bent hooking piece 25 ′ formed by doing the same.

The corner piece 200' is made by connecting the resin member 210' and the horizontal member 220' at a right angle, and may be formed in a substantially ┐ shape with respect to the upper left corner of the outer frame.

The vertical member 210 ′ includes a first groove portion 217 , a vertical protrusion piece 218 , a first cutout portion 218a and a first fixing groove 218b .

In this embodiment, the vertical member 210' is shown as being spaced apart in the Z direction on the outer surface to form two first groove portions 217, but the present invention is not limited thereto. The number of first groove portions 217 formed on the outer surface may be one or three or more as necessary.

The first groove portion 217 is a portion formed to be recessed in the X direction from the outer surface of the vertical member 210', and a fifth inclined surface 217a and a sixth inclined surface 217b are formed to be inclined in a direction crossing each other. is made including In this case, the sixth inclined surface 217b may be formed by cutting a portion of the outer surface of the vertical member 210 ′ and bending it inward. The first groove portion 217 may have a substantially V-shape when viewed in a Z-Y cross-section while the end of the fifth inclined surface 217a and the end of the sixth inclined surface 217b meet each other.

In addition, when the operator cuts and bends a portion of the vertical frame 10 ′ to form the first bending hooking piece 15 ′, the first groove portion 217 is positioned in the Y direction to facilitate alignment in the Y direction. It may be formed to be long, and if necessary, the first groove portion 217 may be formed so that both ends in the Y direction are opened.

The vertical protrusion piece 218 is formed to protrude in the Z direction from the fifth inclined surface 217a of the first groove portion 217 toward the sixth inclined surface 217b, and may be formed to be elongated in the Y direction.

The first cutout 218a may be formed such that a portion of the vertical protrusion piece 218 is cut and bent inwardly, and an end thereof is supported on the fifth inclined surface 217a.

Then, the portion cut from the vertical protrusion piece 218 by the first cutout 218a becomes the first fixing groove 218b serving as a locking space. As the first bending locking piece 15' is inserted and caught in the first fixing groove 218b, the vertical member 210' may be fixed to the vertical frame 10' so as not to move in the Z and Y directions.

In addition, the thickness of the vertical protrusion piece 218 may be thinner than the thickness of the fifth and sixth inclined surfaces 217a and 217b of the first groove portion 217 and the thickness of the first bent hooking piece 15 ′. Accordingly, when the vertical protrusion piece 218 is pressed with the first bending stopping piece 15' to form the first fixing groove 218b, the fifth and sixth inclined surfaces 217a and 217b are formed with the first bending stopping piece (15'). 15') while stably supporting the pressure of the vertical protrusion piece 218 is more easily cut, the first cut-out 218a and the first fixing groove 218b to the vertical protrusion piece 218 easily can be formed

In addition, a third connecting portion 219 may be further formed to extend from the point where the fifth inclined surface 217a and the sixth inclined surface 217b of the first groove portion 217 meet to the inner surface of the vertical member 210 ′. . The third connecting portion 219 is formed to be inclined in a direction substantially similar to that in which the fifth inclined surface 217a is formed, so that the end of the fifth inclined surface 217a constituting the first groove portion 217 and the inner surface of the vertical member 210' can be connected

Accordingly, the first bent support piece 15' and the first cut-out 218a are stably supported by the third connection part 219 so as not to be pressed at a predetermined angle or more, and the first bending stopping piece 15' is excessively bent. It is possible to prevent the problem of being separated without being caught in the first fixing groove (218b) while holding it.

The horizontal member 220' includes a second groove portion 227, a horizontal protrusion piece 228, a second cutout portion 228a, and a second fixing groove 228b.

In this embodiment, the horizontal member 220' is shown as being spaced apart in the X direction on the outer surface to form two second groove portions 227, but the present invention is not limited thereto. The second groove portion 227 formed on the outer surface may be one or three or more as needed.

The second groove portion 227 is a portion formed to be recessed in the Z direction from the outer surface of the horizontal member 220', and the seventh inclined surface 227a and the eighth inclined surface 227b are formed to be inclined in the direction crossing each other. made including In this case, the eighth inclined surface 227b may be formed by cutting a portion of the outer surface of the horizontal member 220' and bending it inward. The second groove portion 227 may have a substantially V-shape when viewed in a Z-Y cross-section while the end of the seventh inclined surface 227a and the end of the eighth inclined surface 227b meet each other.

In addition, when the operator cuts and bends a part of the horizontal frame 20' to form the second bending hooking piece 25', the second groove portion 227 is positioned in the Y direction to facilitate alignment in the Y direction. It may be formed to be long, and if necessary, the second groove portion 227 may be formed so that both ends in the Y direction are opened.

The horizontal protrusion piece 228 is formed to protrude from the seventh inclined surface 227a of the second groove portion 227 toward the eighth inclined surface 227b in the X direction, and may be formed to be elongated in the Y direction.

The second cutout 228a may be formed such that a portion of the horizontal protruding piece 228 is cut and bent inwardly, and an end thereof is supported on the seventh inclined surface 227a.

Then, the portion cut from the horizontal protruding piece 228 by the second cut-out 228a becomes the second fixing groove 228b serving as a locking space. As the second bending locking piece 25' is inserted into the second fixing groove 228b and caught, the horizontal member 220' may be fixed to the horizontal frame 20' so as not to move in the X and Y directions.

In addition, the thickness of the vertical protrusion piece 228 may be thinner than the thickness of the seventh and eighth inclined surfaces 227a and 227b of the second groove portion 227 and the thickness of the second bent hooking piece 25 ′. Accordingly, when the horizontal protrusion piece 228' is pressed with the second bent locking piece 25' to form the second fixing groove 228b, the seventh and eighth inclined surfaces 227a and 227b are formed by the second bending locking piece 25'. A part of the horizontal protrusion piece 228 is cut more easily while stably supporting the pressure of the 25', so that the second cutout 228a and the second fixing groove 228b are easily cut in the horizontal protrusion piece 228. can be formed

In addition, a fourth connection portion 229 may be further formed to extend from the point where the seventh inclined surface 227a and the eighth inclined surface 227b of the second groove portion 227 meet to the inner surface of the horizontal member 220 ′. . The fourth connecting portion 229 is inclined in a direction substantially similar to that in which the seventh inclined surface 227a is formed, so that the end of the seventh inclined surface 227a forming the second groove portion 227 and the inner surface of the horizontal member 220' are formed. can be connected

Accordingly, the second bending support piece 25') and the second cut-out portion 228a are stably supported so as not to be pressed at a predetermined angle or more by the fourth connecting portion 229, and the second bending stopping piece 25' is excessively It is possible to prevent a problem of being separated without being caught in the second fixing groove 228b while being bent.

The present invention is not limited by the above-described embodiments and the accompanying drawings, but is intended to be limited by the appended claims. Therefore, various types of substitution, modification and change will be possible by those skilled in the art within the scope not departing from the technical spirit of the present invention described in the claims, and it is also said that it falls within the scope of the present invention. something to do.

10: vertical frame
12: vertical inner groove
15: vertical bending jam piece
20: horizontal frame
22: horizontal inner groove
25: horizontal bending jam piece
200: corner piece
210: vertical member
212: vertical groove
212a: vertical bottom surface
212b, 212c: first and second inclined surfaces
213: vertical support stone piece
214: first connection part
215: vertical bending support piece
216: vertical fixing hole
220: horizontal member
222: horizontal groove
222a: horizontal floor surface
222b, 222c: third and fourth slopes
223: horizontal support stone piece
224: second connection part
225: horizontal bending support piece
226: vertical fixing hole

Claims (8)

In the corner fastening structure of a window frame comprising an outer frame including a vertical frame and a horizontal frame, and a corner piece in which a vertical member fitted to the vertical frame and a horizontal member fitted to the horizontal frame are connected at right angles,
The vertical member may include: a vertical groove formed including a vertical bottom surface and first and second inclined surfaces on an outer surface; a vertical support protrusion disposed inwardly at a predetermined distance from the vertical bottom surface; a first connection part connecting a portion connected to a first inclined surface of the vertical bottom surface and one end of the vertical support protrusion piece; a vertical bending support piece formed to be supported on the vertical support protrusion piece by cutting and inwardly bending a portion of the vertical bottom surface; and a vertical fixing hole formed in a portion in which the vertical bending support piece is cut out of the vertical bottom surface. including,
The horizontal member may include: a horizontal groove formed on an outer surface including a horizontal bottom surface and third and fourth inclined surfaces; a horizontal support protrusion which is arranged at a predetermined distance from the horizontal floor surface inwardly; a second connection part connecting a portion connected to a third inclined surface of the horizontal floor surface and one end of the horizontal support protrusion piece; a horizontal bending support piece formed to be supported on the horizontal support protrusion piece by cutting and bending a part of the horizontal bottom surface inward; and a horizontal fixing hole formed in a portion in which the horizontal bending support piece is cut out of the horizontal bottom surface; including,
The vertical frame includes a vertical bending hook piece formed to be inserted into and caught in the vertical fixing hole by cutting and bending a part of the outer plate inward,
The horizontal frame includes a horizontal bending locking piece formed to be inserted into and caught in the horizontal fixing hole by cutting and bending a part of the outer plate inward,
A corner fastening structure of a window frame in which the corner piece is fixed to the outer frame so as not to move in the vertical direction, the left-right direction, and the front-rear direction. According to claim 1,
The first connecting portion is inclined so as to connect the outer surface and the inner surface of the vertical member in a direction intersecting the direction in which the vertical bending hook piece is bent,
The second connection portion is a corner fastening structure of a window frame, characterized in that it is inclined to connect the outer surface and the inner surface of the horizontal member in a direction intersecting the direction in which the horizontal bending locking piece is bent. According to claim 1,
The thickness of the vertical bottom surface is formed to be thinner than the thickness of the outer surface of the vertical member and the thickness of the vertical support protrusion,
A corner fastening structure of a window frame, characterized in that the thickness of the horizontal bottom surface is formed thinner than the thickness of the outer surface of the horizontal member and the thickness of the horizontal support protrusion. According to claim 1,
In the vertical member, a plurality of the vertical groove portion, the vertical support protrusion piece and the first connection portion are provided at predetermined intervals in the vertical direction,
The horizontal member is a corner fastening structure of a window frame, characterized in that a plurality of the horizontal groove portion, the horizontal support protrusion piece and the second connection portion are provided at predetermined intervals in the left and right directions. In the corner fastening structure of a window frame comprising an outer frame including a vertical frame and a horizontal frame, and a corner piece in which a vertical member fitted to the vertical frame and a horizontal member fitted to the horizontal frame are connected at right angles,
The vertical member may include: a first groove formed including fifth and sixth inclined surfaces on an outer surface; a vertical protruding piece protruding in the left and right directions from the fifth inclined surface; a first cutout formed to be supported on the fifth inclined surface by cutting and inwardly bending a portion of the vertical protrusion; and a first fixing groove formed in a portion in which the first cutout is cut out of the vertical protruding piece. including,
The horizontal member may include: a second groove formed including seventh and eighth inclined surfaces on an outer surface; a horizontal protruding piece protruding in the left and right directions from the seventh inclined surface; a second cutout formed to be supported on the seventh inclined surface by cutting and inwardly bending a portion of the horizontal protrusion; and a second fixing groove formed in a portion in which the second cutout is cut out of the horizontal protruding piece. including,
The vertical frame includes a first bending engaging piece formed to be inserted into and caught in the first fixing groove by cutting and bending a part of the outer plate inward,
The horizontal frame includes a second bending locking piece formed to be inserted into and caught in the second fixing groove by cutting and bending a part of the outer plate inward,
A corner fastening structure of a window frame in which the corner piece is fixed to the outer frame so as not to move in the vertical direction, the left-right direction, and the front-rear direction. 6. The method of claim 5,
A third connecting portion inclined to connect the end of the fifth inclined surface and the inner surface of the vertical member, and
Corner fastening structure of the window frame, characterized in that it further comprises a fourth connecting portion inclined to connect the end of the seventh inclined surface and the inner surface of the horizontal member. In the corner fixing method of a window frame using an outer frame including a vertical frame and a horizontal frame, and a corner piece in which a vertical member and a horizontal member are connected at right angles,
The vertical member is formed with a vertical groove portion including a vertical bottom surface and first and second inclined surfaces on an outer surface, and a vertical support protrusion is disposed inside the vertical member at a predetermined distance from the vertical bottom surface, and the A first connecting portion connects a portion connected to the first inclined surface of the vertical bottom surface and one end of the vertical support protrusion,
The horizontal member is formed with a horizontal groove portion including a horizontal bottom surface and third and fourth inclined surfaces on an outer surface, and a horizontal support protrusion is disposed inside the horizontal member at a predetermined distance from the horizontal floor surface, the A second connecting part connects a part connected to the third inclined surface of the horizontal floor and one end of the horizontal support protrusion,
Inserting the vertical member into the vertical internal groove of the vertical frame, inserting the horizontal member into the horizontal internal groove of the horizontal frame to bring the vertical frame and the corners of the horizontal frame into close contact with each other, and then fixing the corner piece Pressing a part of the outer plate of the vertical frame and a part of the outer plate of the horizontal frame at positions corresponding to the vertical groove and the horizontal groove using a corner clamping machine,
The pressed portion of the outer plate of the vertical frame is cut and bent inwardly to form a vertical bending hooking piece, and the vertical bending hooking piece presses the vertical bottom surface to cut the pressed portion of the vertical bottom surface and is bent inwardly and vertically bent As the support piece is formed, a vertical fixing hole is formed in a portion where the vertical bending support piece is cut out of the vertical bottom surface, and while the end of the vertical bending support piece is supported by the vertical support protrusion, the vertical bending hooking piece is in the vertical fixing hole After insertion, the vertical member is fixed so as not to move in the vertical direction and in the front-back direction to the vertical frame,
The pressed part of the outer plate of the horizontal frame is cut and bent inwardly to form a horizontal bending hook piece, and the horizontal bending hook piece presses the horizontal bottom surface to cut the pressed part of the horizontal bottom surface and is bent inwardly and horizontally bent As the support piece is formed, a horizontal fixing hole is formed in the part where the vertical bending support piece is cut out of the horizontal bottom surface, and the horizontal bending stopping piece is in the horizontal fixing hole while the end of the horizontal bending support piece is supported by the horizontal support protrusion. After insertion, the horizontal member is fixed to the horizontal frame so as not to move in the left and right and front and rear directions,
A corner fixing method of a window frame in which the vertical frame and the horizontal frame are fixedly assembled with each other. 8. The method of claim 7,
The vertical member and the horizontal member of the corner piece have a structure with an empty interior,
In the inside of the vertical member, the first connecting portion is formed to be inclined to connect the outer surface and the inner surface of the vertical member in a direction intersecting the direction in which the vertical bending hook piece is bent,
In the inside of the horizontal member, the second connection portion is formed to be inclined to connect the outer surface and the inner surface of the horizontal member in a direction intersecting the direction in which the horizontal bending hook piece is bent,
When the vertical fixing hole and the horizontal fixing hole are formed, the first and second connecting portions support the end of the vertical bending support piece and the end of the horizontal bending support piece, respectively, so that the vertical bending hooking piece and the horizontal bending stopping piece are predetermined Corner fixing method of the window frame, characterized in that not to be pressed more than an angle.

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