JP7362398B2 - composite window frame - Google Patents

Description

The present invention relates to a composite window frame that includes a rectangular metal frame that is attached to a window opening in a building, and a resin frame that is attached to the indoor side of the metal frame.

In recent years, rectangular metal frames that are attached to window openings in buildings and resin frames that are attached to the indoor side of the metal frames have been developed to prevent condensation in winter while maintaining the insulation properties of window frames. The adoption of composite window frames with
For such composite window frames, for example, the resin frame is used to simplify the installation work of the metal frame and resin frame, improve the strength of the composite frame as a whole, and make it possible to replace only each resin frame. The upper and lower resin frames and the left and right resin vertical frames constituting the are individually fixed to each metal frame using fixing devices such as screws (for example, see Patent Document 1).

Japanese Patent Application Publication No. 11-107631

However, in the composite window frame of Patent Document 1 mentioned above, not only the metal frame but also the resin frame has a rectangular shape because the upper and lower resin frames and the left and right resin vertical frames are fixed by tapping screws. The square shape must be removed from the metal frame, which may affect the frame if the interior frame is removed.

In addition, when manufacturing a composite shape in which a resin frame is attached to a metal frame in a factory, etc., if the metal frame and resin frame are fixed with screws, the positions of the pilot holes for the screws in the longitudinal direction may not match due to the difference in the materials. This may result in poor workability.

Also, the thermal expansion coefficient of a resin frame is 4 to 5 times higher than that of a metal frame, but if the metal frame and the resin frame are fixed separately using fixing devices such as screws, the resin may be affected by temperature changes during normal use. There was also the problem that the frame deformed.

Therefore, the present invention was made to solve these problems, and when replacing the resin frame, the resin frame can be removed without affecting the frame as much as possible, and the resin frame can be removed due to temperature changes during normal use. The purpose is to provide a composite window frame that can suppress deformation as much as possible.

In order to solve the above problems, a composite window frame according to the present invention is a composite window frame including an upper frame, a lower frame, and left and right vertical frames, and the upper frame is composed of a metal upper frame and a resin upper frame. The metal upper frame includes a first engaged part , a second engaged part, a third engaged part, and the third engaged part , which extend downward at a predetermined distance from the indoor end of the metal upper frame. A screw shaft engagement piece that is provided so as to hang downward between the second engaged part and the third engaged part, and into which a screw facing in the forward direction is screwed, and the third engaged part are connected to each other. and a screw shaft passage piece provided with a through hole through which the screw passes, and the resin upper frame has a screw shaft passage piece provided with a through hole through which the screw passes, and the resin upper frame has a screw shaft passage piece that is provided with a through hole for the screw to pass through, and the resin upper frame has a screw shaft passage piece that is provided with a through hole through which the screw passes. It has a first engaging part, a second engaging part, and a third engaging part so as to face each of the engaging parts, and extends upward between the second engaging part and the third engaging part. , an oversized through-hole piece is formed with an oversized through hole portion having an inner diameter larger than the outer diameter of the shaft portion of the screw; the first engaging portion engages with the first engaged portion; The second engaging portion engages with the second engaged portion, and the third engaging portion engages with the third engaged portion, and is passed through the through hole of the screw shaft passing piece. The screw is configured to be screwed into the screw shaft portion threading piece through the oversized through hole piece of the oversized through hole piece .

In the composite window frame according to the embodiment of the present invention, the screw facing in the direction of projection is screwed into the screw shaft portion of the metal frame, while the screw facing the screw shaft portion of the resin frame is screwed onto the surface opposite to the screw shaft portion of the resin frame. An oversized through-through portion is provided, the inner diameter of which is larger than the outer diameter of the shank of the screw, and the shank of the screw screwed into the screw shank engagement piece is passed through the oversized through-through portion.
Therefore, the resin frame is not screwed together with the metal frame to which it is attached. Therefore, the resin frame can be attached to each metal frame by simply engaging the metal frame, so that workability during the production of composite shapes is improved.
In addition, since the resin frame is fastened to the screw that is screwed into the screw hole of the metal frame with an oversized through hole that has an inner diameter larger than the outside diameter of the screw's shaft, there is some play between the screw shaft and the oversized through hole. is provided, so that even if the resin frame expands or contracts due to temperature changes, deformation of the resin frame due to temperature changes can be suppressed as much as possible. Furthermore, with respect to in-plane movement of the resin frame (depth direction in Figure 1, left-right direction in Figure 3), the shaft of the screw comes into contact with the overpassed portion, preventing the resin frame from slipping out from the metal frame. can.

FIG. 2 is a longitudinal sectional view of a vertically sliding window employing a composite window frame according to an embodiment of the present invention. FIG. 2 is an enlarged view of main parts showing how the resin upper frame is attached to the metal upper frame in FIG. 1. FIG. FIG. 2 is a cross-sectional view in the vicinity of the vertical frame side on the door end side of the vertical sliding window employing the composite window frame of the embodiment of the present invention shown in FIG. 1; FIG. 4 is an enlarged view of a main part showing how the resin vertical frame is attached to the metal vertical frame of the door end side vertical frame in FIG. 3; (a) to (c) are respectively a front view, a side view, and a cross-sectional view taken along line A-A of a seal washer used when passing a screw through a resin frame through an overpassed portion in a composite window frame according to an embodiment of the present invention. It is.

EMBODIMENT OF THE INVENTION Hereinafter, the composite window frame 1 of embodiment based on this invention is demonstrated with reference to drawings, taking the window frame of a vertical sliding window as an example. The embodiments described below are merely examples of the present invention, and the present invention is not limited to the embodiments described below, and can be modified as appropriate within the scope of the technical idea of the present invention. .

<Configuration of composite window frame 1 of embodiment>
FIG. 1 is a vertical cross-sectional view of a vertical sliding window that employs a composite window frame 1 according to an embodiment of the present invention, and FIG. 2 shows how the resin upper frame 1a2 is attached to the metal upper frame 1a1 in the composite window frame 1 according to the embodiment. FIG. 3 is a cross-sectional view of the vicinity of the vertical frame 1c on the door edge side, and FIG. 4 is an enlarged view of the principal part showing how the resin vertical frame 1c2 is attached to the metal vertical frame 1c1.

As shown in FIG. 1, a vertical sliding window has a pair of upper and lower frames provided between an upper frame 1a and a lower frame 1b that constitute a composite window frame 1, and an upper stile 2a and a lower stile 2b that constitute a shoji 2, respectively. This is a well-known type of shoji that slides out and opens and closes the shoji 2 to the outside (outdoor side) using stays (not shown).As shown in Figures 1 to 4, it is a rectangular frame that is attached to the window opening of a building. The metal frames 1a1 to 1c1 of the metal upper frame 1a1, metal lower frame 1b1, and metal vertical frame 1c1, and the resin upper frame 1a2, resin lower frame 1b2, and resin vertical frame attached to the indoor side of the metal frames 1a1 to 1c1, respectively. 1c2 resin frames 1a2 to 1c2. The metal frames 1a1 to 1c1 are extruded from aluminum or the like, and the resin frames 1a2 to 1c2 are extruded from vinyl chloride, acrylic resin, or the like.

In addition, in FIGS. 1 to 4, 2a1 is a metal upper stile such as aluminum which constitutes the upper stile 2a, 2a2 is a resin upper stile which constitutes the upper stile 2a, 2b1 is a metal lower stile which constitutes the lower stile 2b, and 2b2 is a metal lower stile which constitutes the lower stile 2b. 2c1 is a resin lower stile that constitutes the lower stile 2b, 2c1 is a metal vertical stile 2c1 that constitutes the vertical stile 2c, and 2c2 is a resin vertical stile 2c2 that constitutes the vertical stile 2c. The vertical stile 2c is configured to support double-glazed glass, etc., but since the features of the present invention are not related to the structure of the shoji 2, the double-glazed glass etc. are omitted from the illustration.

<Top frame 1a>
As shown in FIGS. 1 and 2, the upper frame 1a is constructed by attaching a resin upper frame 1a2 to the indoor side of a metal upper frame 1a1.

(Metal upper frame 1a1)
As shown in FIG. 1, the metal upper frame 1a1 is constructed of a substantially rectangular cross-sectional shape with an upper opening, and accommodates the upper stile 2a of the shoji 2 in the lower part, and has resin at the lower end on the indoor side. A resin upper frame has an outdoor side facing surface part 1a11 and an indoor side facing surface part 1a12 that extend in the vertical direction, a projected surface part 1a13 that extends in the projected direction so as to face the shoji 2, and an inclined surface so that the upper frame 1a2 can be attached. It has a resin upper frame attachment part 1a14 to which the resin upper frame 1a2 is attached, and a screw shaft part which hangs downward from the indoor end of the prospective surface part 1a13 and into which the screw 3 for attaching the resin upper frame 1a2 to the metal upper frame 1a1 is screwed. It includes a threaded piece 1a15, and a threaded shank passage piece 1a16 that hangs downward from a position a predetermined distance away from the threaded shank part 1a15 toward the outdoor side, and through which the shank part 3a of the screw 3 is passed. There is.

Further, the metal upper frame 1a1 includes a first engaged portion 1a17 at the lower end of the indoor side facing surface portion 1a12, and a second engaged portion 1a17 at a position spaced apart from the first engaged portion 1a17 by a predetermined distance toward the outdoor side. 1a18, and a third engaged portion 1a19 at the lower part of the screw shaft passage piece 1a16.

As shown in FIG. A screw hole 1a15a into which the shank 3a of the screw 3 is screwed is provided, and the shank 3a of the screw 3 passes through a position above the third engaged portion 1a19 in the screw shank passage piece 1a16. A through hole 1a16a is provided to which the head 3b presses through a washer 4, which will be described later.

Note that the prospective surface portion 1a13 has a draining material insertion groove 1a13a (see FIG. 1) into which a draining material (not shown) that comes into contact with the upper end of the outdoor side of the shoji 2 is fitted, and a metal vertical frame for connecting the metal upper frame 1a1. A tapping hole 1a13b (see FIGS. 1 and 2) into which a screw (not shown) for fixing to 1c1 is inserted is provided.

Further, on the opposite side of the third engaged portion 1a19 of the screw shaft passage piece 1a16, there is an airtight material fitting groove 1a16b into which a door stop airtight material (not shown) that comes into contact with the upper end of the indoor side of the shoji 2 is fitted. (See FIGS. 1 and 2).

(Resin upper frame 1a2)
As shown in FIGS. 1 and 2, the resin upper frame 1a2 is provided with an indoor protruding upper plate portion 1a21 that protrudes toward the indoor side, and a first engaged portion 1a17 and a second engaged portion of the metal upper frame 1a1. It has a first engaging part 1a22, a second engaging part 1a23, and a third engaging part 1a24 so as to face each of the engaged part 1a18 and the third engaged part 1a19, and also has a second engaging part 1a23 and a third engaging part 1a24. An oversized through hole 1a25a is formed in the oversized through hole piece 1a25 that extends upward between the third engaging portion 1a24 and has an inner diameter larger than the screw hole 1a15a and the through hole 1a16a.

Therefore, when the resin upper frame 1a2 is attached to the metal upper frame 1a1 as shown in FIGS. 1 and 2, the first engaging part 1a22 engages with the first engaged part 1a17, and the second engaging part 1a23 engages with the first engaged part 1a17. The resin upper frame 1a2 is attached to the metal upper frame 1a1 by engaging the 2nd engaged portion 1a18 and the 3rd engaging portion 1a24 engaging with the 3rd engaged portion 1a19.

In addition, the screw 3 has a seal washer 4, which will be described later, passed through its shaft portion 3a in advance, and is passed through the seal washer 4 through the through hole 1a16a of the screw shaft portion passage piece 1a16 of the metal upper frame 1a1. The resin upper frame 1a2 is attached to the metal upper frame 1a1 by passing the shaft portion 3a of the screw 3 through the oversized through-hole 1a25a of the resin upper frame 1a2 and screwing into the screw hole 1a15a.

Therefore, in the resin upper frame 1a2, the first engaging part 1a22, the second engaging part 1a23, and the third engaging part 1a24 are respectively the first engaged part 1a17 and the second engaged part 1a18 with respect to the metal upper frame 1a1. And since it can be attached simply by engaging with the third engaged portion 1a19, workability during production of the composite profile is improved.

Further, the inner diameter of the through hole 1a16a is, for example, 4.5 mm, which is larger than the 4.0 mm outer diameter of the shaft portion 3a of the screw 3, whereas the inner diameter of the oversized through hole 1a25a is Even if the resin upper frame 1a2 and the metal upper frame 1a1 respectively expand or contract due to temperature changes, the resin upper frame 1a2 and the metal upper frame 1a1 6. The inner diameter of the through hole 1a16a is larger than 4.5 mm in order to absorb the difference in expansion rate or contraction rate between the metal upper frame 1a1 and prevent the resin upper frame 1a2 attached to the metal upper frame 1a1 from being deformed due to temperature changes. It is set to 0 mm.

Therefore, even if the metal upper frame 1a1 and the resin upper frame 1a2 fixed with the screws 3 expand or contract due to temperature changes, there is play (gap) in the oversized through-hole 1a25a of the resin upper frame 1a2 through which the shaft portion 3a of the screw 3 passes. ), deformation of the resin upper frame 1a2 due to temperature changes can be suppressed as much as possible. Furthermore, with respect to the movement of the resin upper frame 1a2 in the in-plane direction (toward the lower frame 2b side), the shaft portion 3a of the screw comes into contact with the inner diameter of the oversized through hole 1a25a, so that the resin upper frame 1a2 moves in the in-plane direction. It also has a locking function to prevent it from slipping out.

<Lower frame 1b>
As shown in FIG. 1, the lower frame 1b is constructed by attaching a resin lower frame 1b2 to the indoor side of a metal lower frame 1b1.

(Metal lower frame 1b1)
The metal lower frame 1b1 has a cross-sectional shape as shown in FIG. A second engaged part 1b12 is provided at a distance from the second engaged part 1b12, and a doorstop airtight material (Fig. An airtight material insertion groove 1b13 is provided into which a metal frame 1b1 is inserted (not shown), and a tapping hole 1b14 into which a screw (not shown) for fixing the metal lower frame 1b1 to the metal vertical frame 1c1 is inserted is provided. ing.

(Resin lower frame 1b2)
The resin lower frame 1b2 is formed to have a cross-sectional shape as shown in FIG. In addition, a first engaging part 1b22 and a second engaging part 1b23 are provided so as to face the first engaged part 1b11 and the second engaged part 1b12 of the metal lower frame 1b1, respectively. , when the resin lower frame 1b2 is attached to the metal lower frame 1b1, the first engaging part 1b22 engages with the first engaged part 1b11, and the second engaging part 1b23 engages with the second engaged part 1a12. By doing so, the resin lower frame 1b2 can be attached to the metal lower frame 1b1.

That is, in the case of the lower frame 1b, unlike the cases of the upper frame 1a and the vertical frame 1c, the screws 3 are not used when attaching the resin lower frame 1b2 to the metal lower frame 1b1.

<Vertical frame 1c>
The vertical frame 1c is constructed by attaching a resin vertical frame 1c2 to a metal vertical frame 1c1, as shown in FIGS. 3 and 4. Although FIGS. 3 and 4 illustrate the cross-sectional structure near the vertical frame 1c on the door end side, the structure of the vertical frame 1c on the door end side is also different from the metal constituting the vertical frame 1c on the door end side. It is configured similarly to the vertical frame 1c1 and the resin vertical frame 1c2.

(Metal vertical frame 1c1)
The metal vertical frame 1c1 has a cross-sectional shape as shown in FIGS. 3 and 4, and the vertical frame 1c is constructed by attaching a resin vertical frame 1c2 to the indoor side, and has an outdoor side facing surface part 1c11, It has an indoor facing surface part 1c12 and a facing surface part 1c13 that faces the shoji 2 and extends in the facing direction, and extends from the facing surface part 1c13 toward the shoji 2 side in the facing direction, and has a resin vertical frame 1c2 on the metal vertical frame 1c1. The screw shaft passage piece 1c14 through which the shaft part 3a of the screw 3 to be fixed passes passes, and the screw shaft passage piece 1c14 extends for a predetermined length in the direction of the room, and then extends in the finding direction toward the shoji 2 side, and the screw 3, and a hollow part forming piece 1c16 that connects to the prospective surface part 1c13 and the screw shaft passing piece 1c14 to form a hollow part.

Further, the metal vertical frame 1c1 has a first engaged portion 1c17 from the indoor side on the shoji 2 side of the prospective surface portion 1c13, and a position spaced apart from the first engaged portion 1a17 by a predetermined distance toward the outdoor side. A second engaged portion 1c18 is provided, and a third engaged portion 1c19 is provided at the end of the screw shaft passing piece 1c14 on the shoji 2 side in the finding direction.

Then, a doorstop airtight material (not shown) is fitted into the screw shaft passage piece 1c14, and the doorstop side of the shoji 2 hits the outdoor side, which is the opposite side of the third engaged part 1c19. A material insertion groove 1c14a is provided, and the shaft portion 3a of the screw 3 passes through it on the side of the prospective surface portion 1c13 rather than the third engaged portion 1c19, and a through hole 1c14b is provided, through which the head 3b is press-contacted via a washer 4, which will be described later. On the other hand, a threaded hole 1c15a into which the threaded portion at the tip of the shank 3a of the screw 3 is threaded is provided in the screw shaft portion threaded piece 1c15 facing the through hole 1c14b.

(Resin vertical frame 1c2)
As shown in FIGS. 3 and 4, the resin vertical frame 1c2 is provided with an indoor protruding vertical plate portion 1c21 that protrudes toward the indoor side, and a first engaged portion 1c17 and a second engaged portion 1c17 of the metal vertical frame 1c1. A first engaging portion 1c22, a second engaging portion 1c23, and a third engaging portion 1c24 are provided to face the engaged portion 1c18 and the third engaged portion 1c19, respectively, and An oversized through hole piece 1c25 extending in the finding direction toward the metal vertical frame 1c1 between the portion 1c23 and the third engaging portion 1c24 has an oversized through hole as an oversized through hole portion having an inner diameter larger than the screw hole 1c15a and the through hole 1c14b. 1c25a is formed.

Therefore, as in the case of the resin upper frame 1a2 and the metal upper frame 1a1 of the upper frame 1a, the resin vertical frame 1c2 is attached to the metal vertical frame 1c1 by the first engaging part 1c22, the second engaging part 1c23 and the third engaging part 1c2. It is possible to attach the part 1c24 to the first engaged part 1c17, the second engaged part 1c18, and the third engaged part 1c19 by simply engaging the second engaging part 1c23 and the third engaging part 1c24. This improves work efficiency when manufacturing composite shapes.

In addition, the inner diameter of the oversized through hole 1c25a is such that even if the resin vertical frame 1c2 and the metal vertical frame 1c1, which are fastened with the screws 3, expand or contract due to temperature changes, the oversized through hole 1c25a and the shaft portion 3a of the screw 3 are The inner diameter of the through-hole 1c14b is set to 4 to prevent the resin vertical frame 1c2 from deforming due to temperature changes by absorbing the difference in expansion or contraction rate between the resin vertical frame 1c2 and the metal vertical frame 1c1 due to the play (gap) between them. It is set to 6.0 mm, which is larger than .5 mm. In this embodiment, the oversized through holes 1a25a and 1c25a have the same inner diameter, but the inner diameters may be different.

Therefore, even if the metal vertical frame 1c1 and the resin vertical frame 1c2, which are fastened with the screws 3, expand or contract due to temperature changes, deformation of the resin vertical frame 1c2 due to temperature changes can be suppressed as much as possible. Furthermore, with respect to the movement of the resin vertical frame 1c2 in the in-plane direction (toward the door end side of the vertical frame 1c), the shaft portion 3a of the screw comes into contact with the inner diameter of the oversized through hole 1c25a, so that the resin vertical frame 1c2 It also has a retaining function that prevents it from slipping out in the in-plane direction.

<Screw 3 and seal washer 4>
The screw 3 has a threaded shaft portion 3a and a head portion 3b, as shown in FIGS. 1 to 4.

The seal washer 4 has a shape as shown in FIGS. 5(a) to 5(c), and is made of a washer 4a made of stainless steel or the like, and a rubber 4b made of neoprene rubber or the like adhered to the back side of the washer 4a.

The washer 4a is provided with a washer hole 4a1 having an inner diameter slightly larger than the outer diameter of the shaft portion 3a so as to allow the shaft portion 3a of the screw 3 to pass therethrough with a gap, as shown in FIGS. 5(a) to (c). On the other hand, the rubber 4b is provided with a rubber hole 4b1 having an inner diameter equal to or less than the outer diameter of the shaft 3a so that the shaft 3a of the screw 3 can be passed closely therethrough in order to exhibit a sealing effect. A recessed portion 4b2 is provided. Therefore, it is possible to prevent rainwater etc. from blowing in from the outdoor side from entering the indoor side through the through hole.

<Replacement of resin frames 1a2 to 1c2 in composite window frame 1 of embodiment>
When removing the resin frames 1a2 to 1c2 from the metal frames 1a1 to 1c1 of the composite window frame 1 attached to the frame and replacing them with new resin frames 1a2 to 1c2, for example, remove the resin frames 1a2 to 1c2 in the following order. To go.

(1) First, remove the screws 3 with seal washers 4 of the resin vertical frame 1c2 attached to the left and right metal vertical frames 1c1, respectively. At this time, if the indoor protruding upper plate part 1a21, the indoor protruding lower plate part 1b21, and the indoor protruding vertical plate part 1c21 are fixed to an indoor frame (not shown) or the like with screws, remove the screws.

(2) Next, shift the resin vertical frame 1c2 in the in-plane direction to engage each of the first engaged portion 1c17, second engaged portion 1c18, and third engaged portion 1c19 of the metal vertical frame 1c1. The resin vertical frame 1c2 is disengaged from the first engaging part 1c22, second engaging part 1c23, and third engaging part 1c24, and the resin vertical frame 1c2 is removed from the metal vertical frame 1c1. At that time, if necessary, the resin vertical frame 1c2 is removed from the metal vertical frame 1c1 by being slightly rotated in the out-of-plane direction (horizontal direction in FIG. 1, up-down direction in FIG. 3) and shifted in the in-plane direction.

(3) Next, as in the case of the vertical frame 1c, remove the screws 3 of the resin upper frame 1a2 attached to the metal upper frame 1a1.

(4) Then, shift the resin upper frame 1a2 in an out-of-plane direction or in a vertical (downward) direction to engage the first engaged portion 1a17, the second engaged portion 1a18, and the third engaged portion of the metal upper frame 1a1. The portion 1a19 is disengaged from the first engaging portion 1a22, second engaging portion 1a23, and third engaging portion 1a24 of the resin upper frame 1a2, and the resin upper frame 1a2 is removed from the metal upper frame 1a1. At that time, if necessary, the resin upper frame 1a2 is removed from the metal upper frame 1a1 by being slightly rotated in an out-of-plane direction and shifted in an out-of-plane direction or in a vertical (downward) direction.

(5) Finally, the resin lower frame 1b2 of the lower frame 1b is removed, but since the resin lower frame 1b2 is not fixed to the metal lower frame 1b1 with screws 3 etc., the resin lower frame 1b2 is moved in the out-of-plane direction. Or, by shifting in the vertical (upward) direction, the first engaged part 1a11 and the second engaged part 1a12 of the metal lower frame 1b1 and the first engaging part 1b22 and the second engaging part of the resin lower frame 1b2. 1b23 and remove the resin lower frame 1b2 from the metal lower frame 1b1. In this case, if necessary, the resin lower frame 1b2 is removed from the metal lower frame 1b1 by slightly rotating the resin lower frame 1b2 in an out-of-plane direction and shifting it in an out-of-plane direction or in a vertical (upward) direction.

With the above steps, the existing resin frames 1a2 to 1c2 have been removed from the metal frames 1a1 to 1c1 of the composite window frame 1 attached to the frame, so the procedure is the reverse of this, that is, the resin lower frame 1b2, the resin upper frame 1a2, and the left and right New resin frames 1a2 to 1c2 are attached to metal frames 1a1 to 1c1 in the order of resin vertical frame 1c2. At that time, for the resin upper frame 1a2 and the left and right resin vertical frames 1c2, after engaging the respective engaging parts with the engaged parts of the metal upper frame 1a1 and the left and right metal vertical frames 1c1, the seal washers 4 are The threaded screws 3 are passed through the respective oversized through-hole pieces 1a25 and 1c25 and fixed to the metal upper frame 1a1 and the left and right metal vertical frames 1c1.

<Main effects of the vertical sliding window adopting the composite window frame 1 of the embodiment>
Therefore, the composite window frame 1 of the embodiment includes metal frames 1a1 to 1c1 framed in a rectangular shape, and resin frames 1a2 to 1c2 attached to the indoor sides of the metal frames 1a1 to 1c1, respectively. Screw holes 1a15a and 1c15a into which the screws 3 facing in the direction of view are screwed are provided in the screw shaft portion screwing pieces 1a15 of the upper frame 1a1 and the screw shaft portion screwing pieces 1c15 of the left and right metal vertical frames 1c1, respectively. The outer diameter of the shaft portion 3a of the screw 3 and the through hole are formed in the oversized through-hole pieces 1a25 and 1c25, which are opposite to the screw shaft portion screwing piece 1a15 and the screw shaft portion screwing piece 1c15 in the resin upper frame 1a2 and the resin vertical frame 1c2. Oversized through-holes 1a25a and 1c25a having inner diameters larger than those of 1a16a and 1c14b are provided, and the shaft portion 3a of the screw 3 passes through the oversized through-holes 1a25a and 1c25a without being screwed together. Note that the metal lower frame 1b1 and the resin lower frame 1b2 that constitute the lower frame 1b are connected to the first engaged part 1b11, the second engaged part 1b12, the first engaging part 1b22, and the second engaging part 1b23. No fixing devices such as screws 3 are used, just the engagement.

Therefore, in the composite window frame 1 of the embodiment, the resin frames 1a2 to 1c2 can be attached by simply engaging with the metal frames 1a1 to 1c1, improving workability when manufacturing composite shapes.

Furthermore, since the resin upper frame 1a2 and the resin vertical frame 1c2 are installed by passing the shaft portions 3a of the screws 3 through the oversized through holes 1a25a and 1c25a that have play (gap) in the metal upper frame 1a1 and the metal vertical frame 1c1, respectively, Even if the frame 1a2 and the resin vertical frame 1c2 expand or contract due to temperature changes, deformation of the resin upper frame 1a2 and the resin vertical frame 1c2 due to temperature changes can be suppressed as much as possible. Furthermore, when the resin frames 1a2 to 1c2 move in the in-plane direction, the shaft portions 3a of the screws come into contact with the inner diameters of the oversized through holes 1a25a and 1c25a, so that the resin frames 1a2 to 1c2 are prevented from coming out in the in-plane direction. It can be prevented.

In particular, the metal upper frame 1a1 is provided with a first engaged portion 1a17, a second engaged portion 1a18, and a third engaged portion 1a19 extending downward at a predetermined interval from the indoor end thereof, A screw hole 1a15a into which the screw 3 is screwed is provided in the screw shaft part threaded piece 1a15 hanging downward between the second engaged part 1a18 and the third engaged part 1a19, while the third The screw shaft passage piece 1a16 provided with the engaging portion 1a19 is provided with a through hole 1a16a through which the screw passes, and the resin upper frame 1a2 has a first engaged portion 1a17, a second engaged portion 1a18, and a second engaged portion 1a18. It has a first engaging part 1a22, a second engaging part 1a23, and a third engaging part 1a24 so as to face each of the three engaged parts 1a19, and a second engaging part 1a23 and a third engaging part 1a24. An oversized through hole 1a25a having an inner diameter larger than the screw hole 1a15a and the through hole 1a16a is formed in the oversized through hole piece 1a25 extending upward between the two, and the first engaging portion 1a22 engages with the first engaged portion 1a17. However, the second engaging part 1a23 engages with the second engaged part 1a18, the third engaging part 1a24 engages with the third engaged part 1a19, and the screw 3 passed through the through hole 1a16a, It is configured to be screwed into the screw hole 1a15a via the oversized through hole 1a25a.

Therefore, all of the engagement points and screw-fastening points between the metal frames 1a1 to 1c1 and the resin frames 1a2 to 1c2 are located on the indoor side, so that the resin frames 1a2 to 1c2 can be replaced from the indoor side. Therefore, work efficiency is improved and work can be performed safely.

Furthermore, since the resin frames 1a2 to 1c2 can be removed individually from the metal frames 1a1 to 1c1, replacement work can be carried out without affecting the interior finish of the indoor picture frame as much as possible.

In addition, in the description of the embodiment, screw holes 1a15a and 1c15a are provided in advance in the threaded shaft parts 1a15 and 1c15 of the metal upper frame 1a1 and the metal vertical frame 1c1, respectively, but the present invention is not limited to this. When using a TEX screw (drill screw) or the like as the screw 3, there is no need to provide screw holes 1a15a and 1c15a in advance. Furthermore, although the oversized through-holes 1a25a and 1c25a have been described as through holes, their shapes are not limited as long as the shaft portion 3a passes through the screws 3 without threading.

In addition, in the description of the embodiment, the composite window frame 1 according to the present invention is applied to a vertical sliding window installed in a window opening of a building, but the present invention is not limited to this. It can be used for other casement windows such as axis-rotating windows, horizontal-axis rotating windows, outward-folding windows, other composite window frames such as sliding windows and double-sided windows, and even composite window frames for interior fittings. .

1 Composite window frame 1a Upper frame 1a1 Metal upper frame (metal frame)
1a11 Outdoor side facing surface part 1a12 Indoor side facing surface part 1a13 Prospective surface part 1a13a Draining material insertion groove 1a13b Tapping hole 1a14 Resin upper frame attachment part 1a15 Screw shaft part threaded piece 1a15a Screw hole 1a16 Screw shaft part passing piece 1a16a Through hole 1a16b Airtight material inset Groove 1a17 First engaged part 1a18 Second engaged part 1a19 Third engaged part 1a2 Resin upper frame (resin frame)
1a21 Indoor projecting upper plate part 1a22 First engaging part 1a23 Second engaging part 1a24 Third engaging part 1a25 Oversized through hole piece 1a25a Oversized through hole (excessive through hole)
1b Bottom frame 1b1 Metal bottom frame (metal frame)
1b11 First engaged part 1b12 Second engaged part 1b2 Resin lower frame (resin frame)
1b21 Indoor projecting lower plate part 1b22 First engaging part 1b23 Second engaging part 1c Vertical frame 1c1 Metal vertical frame (metal frame)
1c2 Resin vertical frame (resin frame)
1c11 Outdoor side facing surface part 1c12 Indoor side facing surface part 1c13 Prospective surface part 1c14 Screw shaft part through piece 1c14a Door stop airtight material insertion groove 1c14b Through hole 1c15 Screw shaft part screwing piece 1c15a Screw hole 1c16 Hollow part forming piece 1c17 First engaged Part 1c18 Second engaged part 1c19 Third engaged part 1c2 Resin vertical frame 1c21 Indoor projecting vertical plate part 1c22 First engaging part 1c23 Second engaging part 1c24 Third engaging part 1c25 Excessive through-hole piece 1c25a Excessive Through hole (excessive through hole)
2 Shoji 2a Upper stile 2b Lower stile 2c Vertical stile 2e Double-glazed glass 3 Screw 3a Shaft 3b Head 4 Seal washer 4a Washer 4b Rubber

Claims (1)

A composite window frame comprising an upper frame, a lower frame, and left and right vertical frames,
The upper frame is composed of a metal upper frame and a resin upper frame,
The metal upper frame includes a first engaged part extending downward at a predetermined distance from an indoor end thereof, a second engaged part, a third engaged part, and the second engaged part. and the third engaged part are provided with a threaded shaft engagement piece that hangs downward between the part and the third engaged part, and into which a screw facing in the forward direction is screwed together, and the third engaged part ; a screw shaft passage piece provided with a through hole for the screw to pass through;
The resin upper frame has a first engaging part, a second engaging part, and a third engaging part so as to face each of the first engaged part, the second engaged part, and the third engaged part. an oversized through hole having a joint portion, extending upward between the second engaging portion and the third engaging portion, and having an oversized through hole having an inner diameter larger than an outer diameter of the shaft portion of the screw; having a piece ;
The first engaging portion engages with the first engaged portion, the second engaging portion engages with the second engaged portion, and the third engaging portion engages with the third engaged portion. The screw that is engaged with the joint portion and passed through the through hole of the screw shaft passing piece is screwed into the screw shaft engaging piece through the oversized through hole of the oversized through hole piece. A composite window frame characterized by comprising:

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