JP3152878B2 - Lower frame of resin sash and mounting structure of the lower frame to building frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lower frame of a resin sash and a structure for attaching the lower frame to a building frame.

[0002]

2. Description of the Related Art There is known a resin sash in which a window frame and a shoji frame are made of resin in order to improve the heat insulating performance of the sash. In windows on which sliding sliding doors are erected via rails provided on the upper and lower frames, the entire load of the sliding doors is applied to the lower frame, so that the lower frame has sufficient strength to withstand the load. In general, a composite frame in which a resin frame for securing heat insulation is combined with an aluminum frame for securing the same.

[0003]

However, the conventional lower frame made of a composite frame in a resin sash, when mounted on a building, has two points: mounting strength of the lower frame, watertightness and heat insulation, that is, prevention of dew condensation. There is a problem that one of the two is satisfied but the other is not.

FIG. 4 is a cross-sectional view showing an example of a lower frame of a resin sash whose strength is satisfactory but prevention of dew condensation is not satisfactory. FIG. 5 is an enlarged view of the lower frame portion of FIG. In FIG. 4, reference numerals 10, 20, and 30 denote an upper frame, a lower frame, and a vertical frame, respectively, which constitute a window frame assembled in a rectangular shape. The whole is made of resin.

As shown in detail in FIG. 5, the lower frame 20 is an aluminum frame A fixed to the building frame at the top and bottom.
1 and a resin frame P1 having rails 21 and 22 for movably holding the sliding sliding doors 41 and 42 and covering the upper half and the outdoor part of the aluminum frame A1 are connected to the lower end of the aluminum material A1. The locking portion 23 formed on the inner surface of the room is provided with a resin frame P1.
Of the aluminum frame are screwed into the resin frame P1 at the intermediate portion in the height direction of the indoor side surface of the aluminum frame. The lower frame 20 has a downwardly extending fixed edge 26 formed on the indoor side surface of the aluminum frame A1 having the hollow portion 25 to secure a required strength. While driving S1 to the window sill 51,
A fixed edge 27 formed at the upper end of the resin frame P1 on the indoor side and a fixed edge 28 formed at the upper end of the aluminum frame A1 on the indoor side are overlapped, and a screw S2 penetrated in the overlapped portion is formed.
Is screwed into the sill 52 or the window sill 51 and fixed. 53
Is an exterior material provided below the lower frame 20, and a space between the upper end of the exterior material and the bottom surface of the aluminum frame A1 is sealed by a caulking material 54.

In this example, the lower frame is fixed to the window sill 51 constituting the building frame with an aluminum frame portion, so that the lower frame is sufficiently attached to the building frame. However, since the aluminum frame A1 having a large heat conduction coefficient is exposed to the outside air from the lower surface of the outdoor end of the resin frame P1 to the outdoor side surface of the window sill 51, the aluminum frame A1 is smaller than the exterior material 53 of the aluminum frame A1. It is inevitable that dew condensation occurs on the inner part, and the window sill 51 and the lumbar
1 ′ may be deteriorated early. Also, aluminum frame A
1 and the thermal expansion coefficient of the resin frame P1 are large in the former. Therefore, in a rectangular window frame, the lower aluminum frame is slightly shorter than the resin frame, and both end surfaces in the longitudinal direction are vertical. Since the lower frame is coupled to the resin frame P1 of the lower frame while being slightly separated from the opposing surface of the frame 30, dew condensation generated on the aluminum frame is caused between the longitudinal end surface of the aluminum frame and the opposing surface of the vertical frame. Into the gap, and furthermore, the window sill 51 and the lumbar wall 5
There is a risk of infiltration between 1 'and the exterior material 53 to deteriorate the window sill, the waist wall, the exterior material, and the like, and eventually, the attachment strength of the aluminum frame to the building frame by the nail S1 becomes weak. was there. Furthermore, since the contact portion between the vertical frame and the resin frame at the end of the lower frame is small only on the upper surface side of the lower frame, the sealing property of the joint is poor, and rainwater easily penetrates from the connection.

FIG. 6 is a longitudinal sectional view showing an example of a conventional lower frame having no problem of dew condensation as in the above example, but having a problem in mounting strength. FIG. 7 is an enlarged view of the lower frame portion of FIG. The same or corresponding members as in FIGS. 4 and 5 are denoted by the same reference numerals, and redundant description will be omitted. As shown in detail in FIG. 7, a lower frame 20 of this example is formed by sliding a sliding screen around an aluminum frame A2 which is also formed to have a hollow portion 25 to secure a required strength. 41, 42
Are coupled with each other while being covered with a resin frame P2 having rails 21 and 22 for movably holding them. In some cases, another L-shaped reinforcing aluminum frame Aa is attached to the indoor side surface of the resin frame P2, and screws B are screwed from the indoor side surface to the resin frame P2 and the aluminum frame A2. In order to fix the lower frame to the building frame, a fixing edge 29 formed to extend downward at the indoor end of the resin frame P2.
A nail S1 is driven into the waist wall 51 'or the window sill, and a fixed edge 27 formed on the indoor upper end of the resin frame P2 and an upper end of the reinforcing aluminum frame Aa overlapped therewith are formed. The lower frame 20 is fixed to the building frame by passing the screw S2 through the fixing edge 210 overlapped with 27 and screwing it into the sill 52 or the window sill 51.

In the case of this conventional example, since the entire aluminum frame A2 is surrounded by the resin frame P2, the waist wall 51 ',
Dew condensation does not occur on either the window sill or the exterior material 53. In consideration of the difference in the coefficient of thermal expansion, even if the aluminum frame A2 is slightly shorter than the resin frame P2 and both ends in the longitudinal direction are slightly separated from the facing surface of the vertical frame 30, even if the lower frame is Since both ends in the longitudinal direction of the resin frame P2 and the opposing surface of the vertical frame 30 made of resin are in close contact with each other, airtightness and watertightness between the lower frame 20 and the vertical frame 30 are ensured. However, in the above conventional example, the nail S1 is fixed by driving the nail S1 into the waist wall 51 'or the window sill at the fixed edge 29 formed so as to extend downward from the indoor end of the resin frame P2 of the lower frame 20. Therefore, there is a problem that it is inevitable that the mounting strength is reduced within a relatively short period of time due to the deterioration of the resin frame over time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lower frame of a resin sash which is improved so as to satisfy both the strength of attachment to a building frame and the prevention of dew condensation. It is in.

[0010]

In order to achieve the above-mentioned object, a lower frame according to the present invention covers an aluminum frame having a fixed edge except for an indoor side surface with a resin frame having a fixed edge,
The fixed edge of the aluminum frame and the fixed edge of the resin frame are overlapped with each other, and the frames are integrally fixed to the building frame by a fastener at the overlapped fixed edge. According to the above configuration, the aluminum frame can be mounted without being exposed to the outside air, so that dew condensation does not occur on the aluminum frame. Even if both ends of the aluminum frame, which is slightly shorter than the resin frame, are separated from the opposing surface of the vertical frame, the end of the lower frame is joined to the vertical frame while being covered with the resin frame, so that the heat insulation is achieved. The integrity and watertightness are not impaired. Since the lower frame is fixed at the fixed edge where the aluminum frame and the resin frame overlap, the mounting strength of the lower frame to the building frame is large. Furthermore, since the aluminum frame is not exposed on a part of the lower frame, the appearance of the lower frame is excellent.

[0011] The resin frame covers at least from a fixed edge of the aluminum frame to an outdoor side surface of the aluminum frame, and is engaged with an outdoor portion of the aluminum frame. It is desirable that the aluminum frame be coupled to an upper cover body that covers at least the upper surface by fitting. In the case of the above configuration, even when the lower frame has a complicated shape, the resin frame can be easily manufactured by the divided upper and lower cover bodies, and can be easily coupled to the aluminum frame.

The lower cover body of the resin frame is engaged with the fixed edge of the aluminum frame at a fixed edge formed at the indoor end, and the upper cover body is formed at the indoor side surface of the outdoor part. It is desirable to be engaged with the outdoor side surface of the outdoor side portion of the above and to be connected to the aluminum frame by a fastener in the indoor side portion. According to the above configuration, the upper and lower cover bodies of the resin frame can be coupled to the aluminum frame without exposing the engagement portions thereof to the outside, so that the lower frame has a good appearance. Further, since the resin frame and the aluminum frame are firmly connected, handling is easy.

In the case where the upper cover body has a sliding rail on its upper surface, even if a load is concentrated by opening and closing the sliding door, the sliding window can sufficiently withstand the load.

The mounting structure of the lower frame according to the present invention is further characterized in that the fixed frame formed above and below the indoor end of the resin frame is outside the fixed frame formed above and below the indoor end of the aluminum frame. The upper and lower fixed edges of the aluminum frame are respectively brought into contact with the upper surface of the window sill or the sill and the outdoor side surface of the window sill or the waist wall, and the lower frame is fixed from outside the fixed edge of the resin frame by a fixing tool. Is fixed to the building. According to the above configuration, the lower frame is fixed at the upper and lower fixing edges where the aluminum frame and the resin frame are overlapped, so that the resin frame can be supported with high stability and high strength.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the illustrated embodiment. FIG. 1 is a longitudinal sectional view when the lower frame of the resin sash according to the present invention is applied to an external sash. FIG. 2 is an exploded view of only the lower frame. Members that are the same as or correspond to those of the above-mentioned conventional components are denoted by the same reference numerals, and redundant description is omitted.

In this embodiment, the lower frame 20 is an aluminum frame A
And a resin frame P joined to the aluminum frame A in a state where the resin frame P is surrounded by the outside. Aluminum frame A
In order to provide the required strength, is formed by a known extrusion method so as to have at least one, in the example shown, two hollow portions 25. A fixed edge 26 extending downward is provided at the lower end of the indoor side end of the aluminum frame A, and a fixed edge 28 extending indoors is provided at the upper end.

As shown in FIG. 4 or FIG. 6, the lower fixed edge 26 is provided with a window sill 51, a waist wall 51 'or a sill 5
The upper fixing edge 28 contacts the outdoor side surface of the building frame member 2 or the like and fixes the lower portion of the lower frame with a fixing tool S1 such as a nail or a screw. It is placed on the upper surface of the sill 52, and the upper part of the lower frame is fixed with a fixing tool S2 such as a screw or a nail.

The resin frame P surrounds the periphery of the aluminum frame A except for the indoor side surface, and has fixed edges 27 and 29 formed above and below the indoor side end. Upper fixed edge 27
Is for fixing this to the upper surface of the window sill 51 or the sill 52 with a fixing tool.
This is for fixing to the outdoor side surface of the window sill 51 or the waist wall 51 'by a fixing tool. With the above configuration, the lower frame 20
Is to cover the aluminum frame A with a resin frame P so as to surround the periphery except the indoor side surface, and to fix the upper and lower fixed edges 27, 29
Are superimposed on the upper and lower fixed edges 28 and 26 of the aluminum frame A, respectively, and the fixing parts S1 and S2 are used in the respective superimposed portions to form the window base 51 constituting the building frame.
Or, it is fixed to the sill 52 and the window 51 or the waist wall 51 '.

In general, the degree of complexity of the sectional shape of the aluminum frame A and the resin frame P constituting the lower frame changes depending on the strength required for the lower frame. As in the lower frame according to the present invention, in order to facilitate the molding of the resin frame P molded so as to surround the periphery of the aluminum frame A and the coupling to the aluminum frame A, in a preferred embodiment of the present invention, In addition, the resin frame P is separately formed into a lower cover body C1 and an upper cover body C2, and the respective cover bodies are connected by fitting. That is, the lower cover body C1 has an engaging portion 211 for engaging the lower fixed edge 26 of the aluminum frame A at the tip of the fixed edge 29 extending downward at the indoor end, and the upper end of the outdoor side surface. The engaged portion 21 engaged with the engaging portion 212 provided on the outdoor side portion of the aluminum frame A
3 and an engaged portion 215 to be engaged with an engaging portion 214 formed at the lower end of the outdoor side surface of the upper cover body C2. The upper cover C2 has an engaging portion 214 for engaging the engaged portion 215 of the lower cover C1 on the indoor side surface of the outdoor portion, and has an engaging portion 214 on the indoor side surface of the indoor portion. It has a connecting portion 216 which is in contact with the upper part of the indoor side surface of the aluminum frame A and is connected by a fastener such as a screw B. Further, an engagement portion 217 is formed at the tip of the fixed edge 27. Each of the cover members C1 and C2 has a plurality of hollow portions in order to provide required strength.

With the above configuration, the resin frame P and the aluminum frame A
And are combined as follows. That is, the aluminum frame A
Of the lower cover body C1
Is engaged with the engaging portion 212 on the outdoor side of the aluminum frame A, firstly, the lower cover C1 and the aluminum frame A are connected, and then, the upper cover C2 The front end of the upper fixed edge 28 of the aluminum frame A is engaged with the indoor-side engaging portion 217, and the outdoor-side engaged portion 215 of the lower cover C1 is engaged with the outdoor-side engaging portion 214 of the upper cover. By engaging, the upper cover body C2 and the aluminum frame A are connected at the same time as the upper and lower cover bodies are connected to the outdoor portion. Lastly, thick connecting portions 216, 2 formed on the upper portion of the indoor side of the aluminum frame A and the upper portion of the indoor side of the upper cover C2.
The resin frame P and the aluminum frame A are firmly connected to the aluminum frame 18 by using a fastener such as a screw or a rivet, such as screwing a screw B or driving a rivet from the indoor side of the aluminum frame.

In the preferred embodiment, an engaging portion 211 is formed on the back side of the fixed edge 29 of the lower cover body C1, and the lower fixed edge 26 of the aluminum frame A is engaged with this, and the outdoor side of the lower cover body C1 is engaged. The engaged part 215 is formed on the outdoor side surface of the lower cover body, and the outdoor side engaging part 214 of the upper cover body C2 is also formed on the indoor side surface of the upper cover body, so that the upper and lower cover bodies C1, C2 are formed. With the aluminum frame A and the aluminum frame A joined, these engaging portions are not exposed to the outdoor side surface. Thus, the completed lower frame has a simple and elegant appearance.

As shown in FIG. 1, the lower frame 20, which is formed by joining the aluminum frame A and the upper and lower resin cover members C1, C2, as shown in FIG. The lower fixed edges 26 and 29 are placed on the upper surface of the sill 52 or the sill wall 51 and
′, The resin frame P and the aluminum frame A are integrally formed in such a manner that the aluminum frame A is covered with the resin frame P by the fasteners S1 and S2 at the upper and lower fixed edges in the same manner as before. Then, it is fixed to the window sill 51 or the sill 52 and the window sill 51 or the waist wall 51 ', that is, to the building frame.

As described above, the lower frame according to the present embodiment is composed of the fixed edges 26, 29;
It is apparent that the fixing strength to the building frame is significantly higher than that of the case where the fixing is performed by the screw S1 screwed only at the fixing edge 26 of the aluminum frame described above with reference to FIG. In addition, the fixing edges 27 and 29 of the resin frame do not impair the mounting strength due to deterioration with time as in the case where the fixing edges 27 and 29 are fixed only by screws that are screwed.

Then, the aluminum frame A of the lower frame attached
Is entirely covered with the resin frame P except for the indoor side surface and does not come into contact with the outside air, so that dew condensation does not occur. Also in the lower frame according to the present invention, the aluminum frame A is set slightly shorter than the resin frame P in consideration of the difference in thermal expansion between the aluminum and the resin, and both ends in the longitudinal direction are separated from the facing surface of the vertical frame. However, since both end surfaces of the resin frame are in close contact with the opposing surfaces of the resin vertical frame, the airtightness and watertightness of the corner portion of the window frame are not impaired.

FIG. 3 shows an example of the shape and mounting structure of a lower frame in which the present invention is applied to a semi-external sash.

[0026]

As described above, in the lower frame according to the first aspect of the present invention, since the entire aluminum frame is covered with the resin frame against the outside air, the effect of preventing dew condensation is great and the lower frame has a vertical effect. Since the joint strength (connection strength) between the frame and the lower frame is sufficiently obtained, the watertightness is improved.
Since the fixed edge is overlapped with the building frame with a fastener such as a screw or a nail, the mounting strength of the lower frame to the building frame is surely increased, and the mounting strength of the resin frame due to deterioration with time is reduced. There is no fear of decline.

Further, the lower frame is formed by dividing the resin frame into a lower cover body and an upper cover body and joining them by fitting. It can be easily formed and integrated with the aluminum frame.

Further, the lower frame of the third aspect can easily connect the upper and lower cover bodies and the aluminum frame.

Further, the lower frame of the fourth aspect can be a sliding window capable of sufficiently withstanding the load even if the load is concentrated by opening and closing the sash.

Further, since the lower frame has a high mounting strength to the building frame, the sash can be supported with high stability and high strength.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an example of a resin sash when the present invention is applied to an external sash.

FIG. 2 is an exploded view of only a lower frame of FIG. 1;

FIG. 3 is a longitudinal sectional view of an example of a resin sash when the present invention is applied to a semi-external sash.

FIG. 4 is a longitudinal sectional view showing an example of a lower frame of a conventional resin sash.

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

FIG. 6 is a longitudinal sectional view showing another example of the lower frame of the conventional resin sash.

FIG. 7 is an enlarged view of a lower frame portion of FIG. 6;

[Explanation of symbols]

 20 Lower frame A Aluminum frame P Resin frame C1 Lower cover C2 Upper cover 26, 27, 28, 29 Fixed edges S1, S2 Screw 21, 22 Rail

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E06B 1/32 E06B 1/60

Claims (5)

(57) [Claims] 1. An outer periphery of an aluminum frame having a fixed edge except for an indoor side surface is covered with a resin frame having a fixed edge, and the fixed edge of the aluminum frame and the fixed edge of the resin frame are overlapped with each other. A lower frame made of a resin sash, wherein both frames are integrally fixed to a building frame by means of a fixing tool such as a screw or a nail at a combined fixing edge. 2. The resin frame covers at least from a fixed edge of the aluminum frame to an outdoor side surface of the aluminum frame, and a lower cover body engaged at an outdoor side portion of the aluminum frame; 2. The lower frame of the resin sash according to claim 1, wherein an upper cover body covering at least the upper surface of the aluminum frame is joined from a portion by fitting. 3. A lower cover body of a resin frame is engaged with a fixed edge of an aluminum frame at a fixed edge formed at an indoor end thereof, and an upper cover body is provided with the lower cover at an indoor side surface of an outdoor part thereof. 3. The lower frame of the resin sash according to claim 2, wherein the lower frame is engaged with an outdoor side surface of an outdoor side portion of the cover body and is connected to the aluminum frame by a fastener at an indoor side portion. 4. The lower frame of a resin sash according to claim 2, wherein the upper cover body has a rail for assembling a shoji on an upper surface. 5. A fixed edge formed above and below an indoor side end of a resin frame is overlapped with a fixed edge formed above and below an indoor side end of an aluminum frame, respectively. The fixing frame abuts on the upper surface of the window sill or the sill, and the outdoor side surface of the window sill or the waist wall, and the lower frame is fixed to the building from outside the fixing rim of the resin frame by a fixing tool. Item 4. A mounting structure of the lower frame of the resin sash according to Item 1, 2, 3, or 4 to a building frame.