Manufacturing method of sash frame, frame material of sash frame and sash frame

Abstract

The present invention provides a method for manufacturing a sash frame that reduces the manufacturing burden for obtaining a sash frame with thermal insulation and airtightness, and provides a sash frame material and a sash frame applicable to the said method for manufacturing a sash frame. [Solution] The present invention is a method for manufacturing a sash frame 1, which is formed by fixing multiple frame members 4 together. By using a covered frame member 5 to which a covering material 3 having heat insulation and airtightness is bonded as the frame member 4, the ends 6a of the covered frame members 6 are fixed together, and then the covering material 3 protruding from the covered protruding frame member 62 is bonded to the back surface of the end 6a of the other covered frame member 6.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a sash frame, a frame material for the sash frame, and a sash frame.

Background Art

[0002] As a sash frame of a window sash, for example, a resin angle as a heat insulation layer for blocking cold air transmitted from the outdoor side and a seal member made of an aluminum alloy as an airtight material are known (see, for example, Patent Document 1). Further, as a dew prevention structure of the sash frame, a structure in which the indoor side exposed portion is covered with a heat insulating material so as not to cause dew condensation on the indoor side exposed portion of the sash frame is known (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in order to obtain a sash frame having heat insulation and airtightness, it is necessary to separately provide a heat insulating material and an airtight material in the above conventional sash frame. Therefore, there is room for improvement in the conventional sash frame in terms of the manufacturing load.

[0005] An object of the present invention is to provide a method for manufacturing a sash frame in which the manufacturing load for obtaining a sash frame having heat insulation and airtightness is reduced, a frame material for the sash frame applicable to the method for manufacturing the sash frame, and a sash frame.

Means for Solving the Problems

[0006] (1) The present invention relates to a method for manufacturing a sash frame, which is formed by fixing the adjacent ends of a plurality of frame members together and is a method for manufacturing a sash frame having heat insulation and airtightness, wherein the plurality of frame members are covered frame members, on which a covering material having heat insulation and airtightness is bonded to the back surface of the frame members, and among the covered frame members, a covered protruding frame member is used in which the covering material protrudes from at least one end of the frame members, and after fixing the adjacent ends of the frame members in the covered frame member, the covering material protruding from the covering material protruding end of the frame member in the covered protruding frame member is bonded to the back surface of the end of the frame member in the covered frame member adjacent to the covering protruding end.

[0007] (2) The method for manufacturing a sash frame described in (1) above is preferably such that, as the plurality of frame members, a covered frame member is used in which a covering material having heat insulation and airtightness is bonded to the back surface of the frame member, and a covered recessed frame member is used in which the covering material is recessed from at least one end of the frame member, thereby fixing the covering material protruding end of the frame member in the covered protruding frame member and the covering material recessed end of the frame member in the covered recessed frame member, and then bonding the covering material protruding from the covering material protruding end to the back surface of the covering material recessed end.

[0008] (3) In the method for manufacturing the sash frame described in (2) above, it is preferable to use a covered frame member in which the covering material protrudes from both ends of the frame member, and a covered frame member in which the covering material is set back from both ends of the frame member, as the plurality of covered frame members.

[0009] (4) In the method for manufacturing a sash frame described in (3) above, the sash frame is a four-sided sash frame formed by fixing the ends of adjacent frame members of four covered frame members, wherein, among the four covered frame members, the covered frame members arranged to extend in the left-right direction are preferably covered with a recessed frame member in which the covering material is recessed from both ends of the frame member, while the covered frame members arranged to extend in the up-down direction are preferably covered with a protruding frame member in which the covering material protrudes from both ends of the frame member.

[0010] (5) In any one of the methods for manufacturing a sash frame described in (1) to (4) above, the covering material may be provided with an overhang that extends in the width direction beyond the outer edge in the width direction of the frame material.

[0011] (6) In any one of the methods for manufacturing a sash frame described in (1) to (5) above, it is preferable that the covering protruding frame material is provided with a protective member that can be peeled off from the adhesive portion at the adhesive portion of the overhang of the covering material that extends beyond the frame material.

[0012] (7) The frame material for a sash frame according to the present invention is a frame material for a sash frame used in any one of the above (1) to (6) methods for manufacturing a sash frame, wherein the covering material is adhered to the back surface of the frame material.

[0013] (8) The present invention provides a sash frame comprising a fixing portion to which the adjacent ends of a plurality of frame members are fixed, the fixing portion comprising a covering material that covers the back surface of one of the adjacent ends of two of the plurality of frame members and protrudes from that one end toward the other end, and an adhesive portion that adheres the covering material to the back surface of the other end. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a method for manufacturing a sash frame that reduces the manufacturing burden for obtaining a sash frame with thermal insulation and airtightness, as well as a frame material and a sash frame applicable to the method for manufacturing the sash frame. [Brief explanation of the drawing]

[0015] [Figure 1] This is a schematic rear view showing a sash frame, which is an exemplary embodiment of the present invention. [Figure 2] This diagram schematically shows only the frame of the sash frame shown in Figure 1. [Figure 3] This is a schematic cross-sectional view showing an example of the adhesion state between the covering material and the frame of the sash frame shown in Figure 1. [Figure 4] This figure schematically shows a covered frame material used in a method for manufacturing a sash frame, which is an exemplary embodiment of the present invention. The covered frame material is a frame material for a sash frame, which is an exemplary embodiment of the present invention. [Figure 5] This is a schematic rear view illustrating an intermediate sash frame that can be used in a manufacturing method, which is another exemplary embodiment of the present invention. [Modes for carrying out the invention]

[0016] The following describes in detail, with reference to the drawings, an exemplary embodiment of the present invention: a method for manufacturing a sash frame, a frame material for a sash frame, and a sash frame.

[0017] Here, "sash" refers to "window fittings" such as sliding windows, and "sash frame" refers to "building materials" such as window frames. Furthermore, in this disclosure, "vertical direction" and "horizontal direction" are based on the state in which the sash frame is attached to the wall of the building. In addition, in this disclosure, "front side" refers to the "outdoor side," and "back side" refers to the "indoor side."

[0018] (Window frame) In FIG. 1, a sash frame 1 which is an exemplary embodiment of the present invention is shown from the back side of the sash frame 1. Further, in FIG. 2, only the frame body 2 of the sash frame 1 is schematically shown from the back side of the frame body 2.

[0019] As shown in FIG. 1, the sash frame 1 includes a frame body 2 and a plurality of covering materials 3 disposed on the back surface of the frame body 2. As shown in FIG. 1, the sash frame 1 includes a fixing portion 1a in which adjacent end portions 4a of a plurality of frame members 4 are fixed to each other.

[0020] As shown in FIG. 2, the frame body 2 includes a plurality of frame members 4. The frame member 4 is a frame member having a length L4. The frame member 4 is, for example, a metal frame member such as an aluminum alloy. In the present disclosure, the frame body 2 is formed into a rectangular shape with an opening formed inside the frame body 2 by four frame members 4. In the present disclosure, the four frame members 4 include two long frame members 41 and two short frame members 42.

[0021] In the present disclosure, among the lengths L4 of the frame members 4, the length of the long frame member 41 is defined as the length L41, and the length of the short frame member 42 is defined as the length L42. In the present disclosure, the length L41 of the long frame member 41 is longer than the length L42 of the short frame member 42. In other words, in the present disclosure, the length L42 of the short frame member 42 is shorter than the length L41 of the long frame member 41.

[0022] Further, in the present disclosure, the width w4 of the frame member 4 is the width in a direction orthogonal to the extending direction of the length L4 in a plane including an axis (vertical axis) extending in the vertical direction. Among the widths w4 of the frame member 4, the width of the long frame member 41 is defined as the width w41, and the width of the short frame member 42 is defined as the width w42. The width w41 of the long frame member 41 can be the same as or different from the width w42 of the short frame member 42.

[0023] As shown in FIG. 2, in the present disclosure, the two long frame members 41 are arranged to extend in the left - right direction with a space therebetween in the vertical direction. Further, in the present disclosure, the two short frame members 42 are arranged to extend in the vertical direction with a space therebetween in the left - right direction. In the present disclosure, the two short frame members 42 are arranged between the two long frame members 41.

[0024] In this disclosure, of the ends 4a of the frame members 4, the end of the long frame member 41 is defined as end 41a, and the end of the short frame member 42 is defined as end 42a. In this disclosure, the end 41a of the long frame member 41 and the end 42a of the short frame member 42, which are positioned on the upper side, are fixed together by aligning the lower end of the end 41a of the long frame member 41 with the upper end of the end 42a of the short frame member 42. Also in this disclosure, the end 41a of the long frame member 41 and the end 42a of the short frame member 42, which are positioned on the lower side, are fixed together by aligning the upper end of the end 41a of the long frame member 41 with the lower end of the end 42a of the short frame member 42. In Figure 2, the fixing portion 1a is shown as the joint between the mutually adjacent ends 4a of the two frame members 4.

[0025] On the other hand, as shown in Figure 1, the multiple covering materials 3 include covering materials that cover the back surface of one end 4a of two adjacent ends 4a of the multiple frame materials 4, and that protrude from that end 4a toward the other end 4a.

[0026] In this disclosure, the covering material 3 is a sheet (tape)-shaped covering material having a length L3. In this disclosure, four covering materials 3 are arranged in a rectangular shape on the back surface of the frame 2 so as to surround the opening formed on the inside of the frame 2.

[0027] The covering material 3 is a covering material (insulating and airtight material) that has thermal insulation and airtightness. An example of covering material 3 is Softlon S (Sekisui Chemical Co., Ltd.). Furthermore, covering material 3 can be a laminated covering material comprising, for example, a thermal insulation layer having thermal insulation properties and an airtight layer having airtightness, and the thermal insulation layer and the airtight layer can be laminated together, for example, with an adhesive. An example of the thermal insulation layer is a material layer formed of a material having thermal insulation properties (for example, a resin material such as polyethylene foam, polystyrene foam, or urethane foam). An example of the airtight layer is an adhesive that can ensure airtightness (for example, an adhesive that can bond metals such as aluminum alloys to resins). Furthermore, covering material 3 can be a tape having a base layer on which an adhesive is provided. In this case, an example of the base layer is Softlon S, nonwoven fabric, polyolefin resin, etc. In this case, an example of the adhesive is a silicone-based adhesive. Alternatively, covering material 3 can be formed from a mixed material of a material having thermal insulation properties and a material having gas barrier properties. However, the covering material 3 described above is merely illustrative. In this disclosure, the covering material 3 only needs to be a material with thermal insulation properties, an adhesive surface, and capable of covering the gaps in the sash frame to create an airtight seal.

[0028] Each of the four covering materials 3 can be a covering material with the same length L3, but in this disclosure, the four covering materials 3 include two short covering materials 31 and two long covering materials 32. In this disclosure, the short covering materials 31 are arranged on the long frame members 41 of the frame material 4. Also in this disclosure, the long covering materials 32 are arranged on the short frame members 42 of the frame material 4.

[0029] In this disclosure, of the total length L3 of the covering material 3, the length of the short covering material 31 is defined as length L31, and the length of the long covering material 32 is defined as length L32. In this disclosure, the length L31 of the short covering material 31 is shorter than the length L32 of the long covering material 32. In other words, in this disclosure, the length L32 of the long covering material 32 is longer than the length L31 of the short covering material 31.

[0030] Furthermore, in this disclosure, the width w3 of the covering material 3 is the width in the direction perpendicular to the extending direction of length L3 in a plane containing an axis extending in the vertical direction (vertical axis), and of the width w3 of the covering material 3, the width of the short covering material 31 is defined as width w31 and the width of the long covering material 32 is defined as width w32. In this disclosure, the width w31 of the short covering material 31 may be the same as or different from the width w32 of the long covering material 32. In this disclosure, the width w3 of the covering material 3 is the same as the width w4 of the frame material 4. However, the width w3 of the covering material 3 may be different from the width w4 of the frame material 4.

[0031] In addition, the sash frame 1 is equipped with an adhesive portion 5 (described later using Figure 3) for adhering a covering material 3 that protrudes from the end 4a of one of the two frame members 4 whose ends 4a are adjacent to each other, toward the end 4a of the other frame member 4.

[0032] As shown in Figure 1, in this disclosure, the short covering material 31 is positioned on the back surface of the long frame material 41 such that it exposes the back surfaces of each of the two ends 41a of the long frame material 41. In addition, in this disclosure, the long covering material 32 is positioned on the back surface of the short frame material 42 such that it protrudes in the longitudinal direction beyond the two ends 42a of the short frame material 42.

[0033] In this disclosure, the portion of the covering material 3 that protrudes in the longitudinal direction beyond the end 4a of the frame material 4 is referred to as the protruding portion 3a of the covering material 3. In this disclosure, the portion of the long covering material 32 that protrudes in the longitudinal direction beyond the end 42a of the short frame material 42 is referred to as the protruding portion 32a of the long covering material 32. In this disclosure, the protruding portion 32a of the long covering material 32 protrudes from the end 42a of the short frame material 42 toward the end 41a of the long frame material 41, thereby covering the back surface of the end 41a of the long frame material 41. That is, in this disclosure, the fixing portion 1a of the sash frame 1 is covered by the long covering material 32, as shown in Figure 1.

[0034] Figure 3 schematically shows an example of the adhesion state between the covering material 3 and the frame body 2 of the sash frame 1.

[0035] As shown in Figure 3, the sash frame 1 is provided with an adhesive portion 5 for adhering the covering material 3 to the back surface of the frame body 2 (frame material 4). In this disclosure, the adhesive portion 5 is provided over the entire back surface of the covering material 3. This allows the adhesive portion 5 to adhere the entire covering material 3 to the back surface of the frame body 2 (including the back surface of the frame body 2 covered with the covering material 3). In this disclosure, the portion of the adhesive portion 5 that adheres the protruding portion 3a of the covering material 3 to the end portion 41a of the frame material 4 is a part of the adhesive portion 5, but for convenience, it is referred to here as the exposed portion 5a of the adhesive portion 5.

[0036] Referring to Figure 1, in this disclosure, the protruding portion 32a of the long covering material 32 is bonded to the back surface of the end portion 41a of the long frame material 41 by the exposed portion 5a of the adhesive portion 5. That is, the long covering material 32, together with the adhesive portion 5, seals the fixing portion 1a in an airtight state, including the back surface of the end portion 41a of the long frame material 41 and the back surface of the short frame material 42. In addition, in this disclosure, since the long covering material 32 (covering material 3) itself is airtight, the long covering material 32 further improves the airtightness at the fixing portion 1a. As a result, the long covering material 32, together with the adhesive portion 5, can prevent the flow of air through the fixing portion 1a. Specifically, the long covering material 32, together with the adhesive portion 5, can prevent outside air from flowing into the indoor side through the fixing portion 1a. Alternatively, the long covering material 32, together with the adhesive portion 5, can prevent indoor air from flowing out to the outdoor side through the fixing portion 1a.

[0037] In addition, since the covering material 3, including the short covering material 31 and the long covering material 32, has thermal insulation properties, the covering material 3 can prevent heat transfer through the frame 2 (frame material 4). Specifically, the short covering material 31 and the long covering material 32 can each prevent cold air (or heat) from the outside from flowing into the inside through the frame 2 (frame material 4). Alternatively, the short covering material 31 and the long covering material 32 can each prevent heat (or cold air) from the inside from being released to the outside through the frame 2 (frame material 4).

[0038] With the sash frame 1, a sash frame with thermal insulation and airtightness can be obtained by bonding the covering material 3 to the frame body 2 (frame material 4). Therefore, the sash frame 1 is a sash frame that reduces the manufacturing burden of having to separately provide the thermal insulation material and the airtight material during the manufacturing of the sash frame 1.

[0039] (Manufacturing method for window frames) Next, a method for manufacturing a sash frame 1, which is an exemplary embodiment of the present invention, will be described.

[0040] Figure 4 schematically shows a covered frame material 6 used in a method for manufacturing a sash frame 1, which is an exemplary embodiment of the present invention. In Figure 4, the covered frame material 6 is shown in the arrangement used when assembling the sash frame 1 so that the back side (indoor side) of the sash frame 1 faces the front side (in this case, the worker side). The covered frame material 6 is a frame material used to perform the assembly work of the frame body 2 equipped with the covering material 3 in one go when manufacturing the sash frame 1.

[0041] In this disclosure, the method for manufacturing a sash frame is a method for manufacturing a sash frame 1 that is formed by fixing the adjacent ends 4a of a plurality of frame materials 4 together and has thermal insulation and airtightness.

[0042] The method for manufacturing a sash frame 1 according to this disclosure is to use a covered frame 6 in which a covering material 3 having heat insulation and airtightness is bonded to the back surface of the frame material 4 as a plurality of frame material 4, and of the covered frame 6, a covered protruding frame material 62 can be used in which the covering material 3 protrudes from at least one end 4a of the frame material 4 (more specifically, at least one longitudinal end 4e of the frame material 4). By using the covered protruding frame material 62, after fixing the ends 4a of the frame material 4 in the covered frame 6 together, the covering material 3 protruding from the end (covering material protruding end) 4a of the frame material 4 in the covered protruding frame material 62 can be bonded to the back surface of the end 42a of the frame material 4 in the covered protruding frame material 62 and the end 4a of the frame material 4 in the adjacent covered frame material 6.

[0043] As shown in Figure 4, the covered frame material 6 has the covering material 3 pre-bonded to the back surface of the frame material 4. In this disclosure, at least one of the ends 6a of the covered frame material 6, 3a, can be a protruding portion of the covering material 3. In this disclosure, at least one of the two ends 62a of the covered protruding frame material 62, 62a, can be a protruding portion 32a of the long covering material 32. Therefore, by using the covered frame material 6 in the manufacture of the sash frame 1, an intermediate body of the sash frame 1 can be obtained, which includes a frame body 2 equipped with a covering material 3 that has thermal insulation and airtightness, by aligning the end (covering material protruding side end) 42a of the short frame material 42 in the covered protruding frame material 62 with the end 4a of the frame material 4 in the covered frame material 6 adjacent to the end 42a of the short frame material 42. Here, "(intermediate body of the sash frame 1)" refers to a structure in which the covered frame material 6 is fixed to the frame body 2 without the ends 6a of the covered frame material 6 being fixed to each other. In addition, a covering material 3 including a short covering material 31 and a long covering material 32 is pre-bonded to the back surface of the intermediate body of the sash frame 1 (the back surface of the frame body 2). That is, the covering material 3 including the short covering material 31 and the long covering material 32 is arranged on the same surface of the intermediate body of the sash frame 1. Therefore, the ends 4 of each frame material 4 are positioned with the covering material 3 facing the front side (in this case, the worker side). When fixing parts a together, easy assembly is possible using the covering material 3 as a reference. In this case, when assembling the frame members 4 of multiple covered frame members 6 so that the surface of the frame body 2 faces the front side (in this case, the worker side), there is no need to flip the intermediate body of the sash frame 1 so that the front and back sides are reversed when finally bonding the protruding portion 32a of the long covering material 32 provided on the covered protruding frame member 62 to the back surface of the end 42a of the short frame member 42 on the covered protruding frame member 62 and the back surface of the end 4a of the frame member 4 on the adjacent covered frame member 6.

[0044] According to the method for manufacturing a sash frame 1 of this disclosure, an intermediate body of the sash frame 1 is formed using a plurality of covered frame materials 6. Then, the protruding portion 32a of the long covering material 32 provided on the covered protruding frame material 62 of the plurality of covered frame materials 6 is bonded to the back surface of the end portion 4a of the frame material 4 in the covered frame material 6 corresponding to the covered protruding frame material 62. This improves the airtightness of the fixing portion 1a (joint) of the finished sash frame 1 and also improves the thermal insulation of the entire frame body 2 of the sash frame 1.

[0045] Furthermore, as described above, according to the manufacturing method of the sash frame 1 of this disclosure, there is no need to provide the thermal insulation material and the airtight material separately. Therefore, according to the manufacturing method of the sash frame 1, the manufacturing burden is reduced compared to conventional manufacturing methods of the sash frame 1, because there is no need to provide the thermal insulation material and the airtight material separately. Accordingly, according to the manufacturing method of the sash frame 1 of this disclosure, it is possible to obtain a manufacturing method for a sash frame that reduces the manufacturing burden required to obtain a sash frame 1 with thermal insulation and airtightness.

[0046] In this disclosure, as multiple frame members 4, a covered frame member 6 is used, which has a covering material 3 having heat insulation and airtightness bonded to its back surface. Among the covered frame members 6, a covered recessed frame member 61 is used in which the covering material 3 is set back from at least one end 4a of the frame member 4 (more specifically, at least one longitudinal end 4e of the frame member 4). The covered recessed frame member 61 allows the back surface of the end 41a of the long frame member 41 to be exposed from the short covering material 31 by setting the covering material 3 back in the longitudinal direction from the end 41a of the long frame member 41. As disclosed herein, if a covered recessed frame member 61 is further used in addition to the covered protruding frame member 62, after fixing the end 41a (covering material recessed end 61a) of the long frame member 41 in the covered recessed frame member 61 and the end 42a (covering material protruding end 62a) of the short frame member 42 in the covered protruding frame member 62, the protruding portion 32a of the long covering member 32 in the covered protruding frame member 62 can be directly bonded to the back surface of the end 41a of the long frame member 41 that is exposed from the short covering member 31 in the covered recessed frame member 61. In this case, the short covering member 31 and the long covering member 32 can be prevented from overlapping at the four corners of the frame body 2. Therefore, in this case, the four corners of the frame body 2 of the sash frame 1 will not become locally thicker, and a sash frame 1 with uniform thickness can be obtained.

[0047] In particular, the method for manufacturing a sash frame 1 according to this disclosure uses, as multiple covered frame members 6, a covered frame member 62 in which the covering material 3 protrudes from both ends 4a of the frame member 4, and a covered frame member 61 in which the covering material 3 is set back from both ends 4a of the frame member 4. In this case, by making each of the protruding portions 3a of the covering material 3 that protrude from the end 4a of the frame material 4 the end 62a of the covered protruding frame material 62, after forming the covered protruding frame material 62 by attaching the long covering material 32 to the short frame material 42, assembling the end 42a of the covered protruding frame material 62 to the end 4a of the frame material 4 of the covered frame material 6, it is possible to more easily seal the gap at the joint with the frame material 4 of the covered frame material 6 by sealing the gap at the joint with the corresponding frame material 4 of the covered frame material 6 with each of the two protruding portions 32a of the long covering material 32 as the end 62a of the covered protruding frame material 62. Therefore, in this case, it is easier to ensure airtightness. In addition, in this case, by setting the covering material 3 back from the end 4a of the frame material 4, each of the end 4a of the frame material 4 exposed from the covering material 3 is made into the end 61a of the set-back covering frame material 61. Compared to the case where only one of the two end 61a of the long frame material 61 is made into the end 61a of the set-back covering frame material 61, each of the two end 61a of the long frame material 61 is covered by the protruding portion 32a of the long covering material 32, which is the end 62a of the protruding covering frame material 62, making it easier to seal the gaps at the joints between the frame materials 4. Therefore, in this case as well, it becomes easier to ensure airtightness. In addition, when the covering material 3 is thick, it is difficult to adhere it to the surface of another covering material 3. However, if each of the two ends 61a of the covering recessed frame material 61 is made to be the two ends 41 of the long frame material 41, then the protruding portion 32a of the long covering material 32 of the covering protruding frame material 62 does not need to be adhered to the surface of each of the two ends 61a of the covering recessed frame material 61. Therefore, in this case, even if the covering material 3 is thick, the protruding portion 3a of the covering material 3 can be adhered more easily than when only one end 41 of the long frame material 41 is made to be the end 61a of the covering recessed frame material 61. This is particularly effective when the surface of the covering material 3 is a metal surface such as aluminum.However, the covering protruding frame member 62 can cause the covering material 3 to protrude from only one end 42a of the short frame member 42. Similarly, the covering retracting frame member 61 can cause the covering material 3 to retract in the longitudinal direction from only one end 41a of the long frame member 41.

[0048] As shown in Figure 4, in this disclosure, the sash frame 1 is a four-sided sash frame formed by fixing the ends 4a of adjacent frame members 4 of four covered frame members 6 together. In this disclosure, among the four covered frame members 6, the covered frame member 6 arranged to extend in the left-right direction uses a covered frame member 61 in which the covering material 3 is set back from both ends 4a of the frame member 4, while the covered frame member 6 arranged to extend in the vertical direction uses a covered frame member 62 in which the covering material 3 protrudes from both ends 4a of the frame member 4. In this case, the protruding portion 32a of the long covering material 32 in the covered frame member 62 can be easily fixed along the vertical direction to the back surface of the end 41a of the long frame member 41 in the covered frame member 61.

[0049] (Frame material for window sashes) In this disclosure, the frame material of the sash frame 1 is a covered frame material 6 in which a covering material 3 is bonded to the back surface of a frame material 4. The covered frame material 6 integrally comprises a covering material 3 having thermal insulation and airtightness, and a frame material 4 that constitutes the frame body of the sash frame. Therefore, as described above, the covered frame material 6 is a suitable frame material for use in a method for manufacturing a sash frame having thermal insulation and airtightness. In this disclosure, the covered frame material 6 includes a covered recessed frame material 61 and a covered protruding frame material 62, as described above. However, if only the covered protruding frame material 62 is used without using the covered recessed frame material 61, a covered frame material in which the longitudinal end of the covering material 3 coincides with the longitudinal end 4e of the frame material 4 may be used on the mating side of the covered protruding frame material 62. Furthermore, the covering protruding frame member 62 includes a configuration in which the covering material 3 protrudes from one end 4a of the frame member 4, thereby forming one end 62a of the covering protruding frame member 62, while the covering material 3 is set back from the other end 4a of the frame member 4, thereby forming the other end 62a of the covering protruding frame member 62.

[0050] Figure 5 schematically shows an intermediate sash frame to illustrate another exemplary embodiment of the present invention, which is a method for manufacturing a sash frame. Figure 5 shows the intermediate sash frame from the back side.

[0051] In this disclosure, the covering material 3 has an overhang 3b that extends in the width direction beyond the outer edge in the width direction of the frame material 4. In this disclosure, of the overhangs 3b of the covering material 3, the overhang of the short covering material 31 is designated as the overhang 31b, and the overhang of the long covering material 32 is designated as the overhang 32b.

[0052] In this disclosure, the short covering material 31 of the covering setback frame material 61 extends outward in the width direction beyond the outer edge in the width direction of the long frame material 41. In this disclosure, the protruding portion 31b of the short covering material 31 is formed by shifting the short covering material 31 outward in the width direction relative to the long frame material 41. However, the protruding portion 31b of the short covering material 31 can also be formed by making the width w31 of the short covering material 31 wider than the width w41 of the long frame material 41. In this case, the short covering material 31 can cover the long frame material 41 completely in the width direction while providing the protruding portion 31b on the outside in the width direction of the long frame material 41.

[0053] Furthermore, in this disclosure, the long covering material 32 of the covering protruding frame material 62 extends outward in the width direction beyond the width direction outer edge of the short frame material 42. In this disclosure, a resin material 8 is provided on the width direction outer edge of the short frame material 42. The protruding portion 32b of the long covering material 32 extends outward in the width direction beyond the width direction outer edge of the resin material 8. In this disclosure, the protruding portion 32b of the long covering material 32 is formed by shifting the long covering material 32 outward in the width direction relative to the short frame material 42. However, the protruding portion 32b of the long covering material 32 can also be formed by making the width w32 of the long covering material 32 wider than the width w42 of the short frame material 42 including the resin material 8. In this case, the long covering material 32 can cover the short frame material 42 completely in the width direction while providing the protruding portion 32b on the width side of the long covering material 32.

[0054] If the covering material 3 is provided with an overhang 3b that extends outward in the width direction, the overhang 3b can improve the thermal insulation and airtightness around the frame 2. Specifically, the overhang 31b of the short covering material 31 can improve the thermal insulation and airtightness between, for example, the upper edge of the frame 2 and the frame mounting portion (not shown) provided on the building wall (not shown). Also, the overhang 32b of the long covering material 32 can improve the thermal insulation and airtightness between, for example, the frame 2 and the resin material 8. Furthermore, in this disclosure, the overhang 32b of the long covering material 32 can improve the thermal insulation and airtightness between, for example, the left and right edges of the frame 2 arranged in the left-right direction and the frame mounting portion (not shown) provided on the building wall (not shown).

[0055] In addition, in this disclosure, the covering protruding frame material 62 is provided with a protective member 7 that can be peeled off from the adhesive portion 5 at the adhesive portion 5 of the overhang portion of the covering material 3 that extends beyond the frame material 4 of the covering protruding frame material 62. Here, the "overhang portion of the covering material 3" refers to at least one of the "protruding portion 3a of the covering material 3" and the "extended portion 3b of the covering material 3". In this disclosure, the protective member 7 is provided to cover the protruding portion 3a of the covering material 3, which is the overhang portion of the covering material 3. An example of the protective member 7 is release paper with resin laminated on the surface of a backing paper.

[0056] The adhesive portion 5 provided on the back surface of the protruding portion 32a of the long covering material 32 in the covering protruding frame material 62 can be protected by the protective member 7 after fixing the end portion 41a of the long frame material 41 in the covering recessed frame material 61 and the end portion 42a of the short frame material 42 in the covering protruding frame material 62, until just before the protruding portion 32a of the long covering material 32 in the covering protruding frame material 62 is bonded to the end portion 41a of the long frame material 41 in the covering recessed frame material 61. In this case, the adhesive portion 5 of the protruding portion 32a of the long covering material 32 is not exposed by the protective member 7 until requested by the worker, thereby facilitating the assembly of the sash frame.

[0057] In this disclosure, the retractable covering frame member 61 comprises a long frame member 41 and a short covering member 31 having an overhang 31b. In this disclosure, the protruding covering frame member 62 comprises a short frame member 42, a resin material 8 provided on the short frame member 42, and a covering member 32 having an overhang 32b.

[0058] An example of a method for manufacturing a sash frame that has thermal insulation and airtightness, equipped with resin material 8, by assembling the intermediate structure shown in Figure 5 using a covered frame material 6 equipped with resin material 8, is as follows.

[0059] (1) The retracted covering frame members 61 and the protruding covering frame members 62 are assembled into the frame 2 by using a pair of retracted covering frame members 61 and a pair of protruding covering frame members 62. At this time, protective members 7 are attached to the protruding portion 32a of the long covering material 32 in the protruding covering frame member 62. This makes it possible to easily assemble the frame 2 which includes the covering material 3 and the resin material 8.

[0060] (2) After the assembly of the frame 2 is complete, remove the protective member 7 from the protruding portion 32a of the long covering material 32.

[0061] (3) After removing the protective member 7, the protruding portion 32a of the long covering material 32 is attached to the back surface of the end portion 41a of the long frame material 41 so as to overlap with the end portion 41a of the long frame material 41 in the covering recessed frame material 61.

[0062] (4) After attaching the protruding portion 32a of the long covering material 32 to the back surface of the end portion 41a of the long frame material 41, the protruding portion 32a of the long covering material 32 is pressed against the back surface of the end portion 41a of the long frame material 41, thereby bonding the protruding portion 32a of the long covering material 32 to the back surface of the end portion 41a of the long frame material 41.

[0063] In this case as well, since there is no need to provide insulation and airtightness separately, the manufacturing burden is reduced compared to conventional methods for manufacturing window frames. Therefore, this method of manufacturing window frames also allows for a method of manufacturing window frames that reduces the manufacturing burden required to obtain window frames with both insulation and airtightness.

[0064] In addition, in this method of manufacturing a sash frame, by providing the covering material 3 with an overhang 3b that extends outward in the width direction, the overhang 3b can improve the thermal insulation and airtightness around the frame body 2.

[0065] The foregoing only discloses exemplary embodiments of the present invention, and various modifications are possible according to the claims. For example, the various configurations adopted in each of the embodiments described above can be combined with one another. In this disclosure, the sash frame 1 uses a covered protruding frame member 62 for the covered frame members 6 that are arranged to extend in the left-right direction, while a covered recessed frame member 61 can be used for the covered frame members 6 that are arranged to extend in the vertical direction. That is, the arrangement of the covered recessed frame member 61 and the covered protruding frame member 62 can be as appropriate for the sash frame. [Explanation of Symbols]

[0066] 1: Sash frame, 1a: Fixing part, 2: Frame body, 3: Covering material, 3a: Protruding part of covering material (overhanging part of covering material), 3b: Overhanging part, 4: Frame material, 4a: End of frame material, 4e: End in the longitudinal direction of frame material, 5: Adhesive part, 6: Covered frame material, 6a: End of covered frame material, 7: Protective member, 8: Resin material, 31: Short covering material, 31b: Overhanging part of short covering material, 32: Long covering material, 32a: Protruding part of long covering material (overhanging part of covering material), 32b: Overhanging part of long covering material, 41: Long frame material, 41a: End of long frame material, 42: Short frame material, 42a: End of short frame material, 61: Recessed covered frame material, 62: Protruding covered frame material, 61a: Sheathing material retreat side end of sheathing protruding frame material, 62a: Sheathing material protruding side end

Claims

1. A method for manufacturing a sash frame, which is formed by fixing the adjacent ends of multiple frame materials together and has thermal insulation and airtightness, As the plurality of frame members, a covered frame member is provided, in which a covering material having heat insulation and airtightness is bonded to the back surface of the frame member, and among the covered frame members, a covered frame member with the covering material protruding from at least one end of the frame member is used. A method for manufacturing a sash frame, comprising fixing adjacent ends of frame members in the covered frame member, and then adhering the covering material protruding from the covering material protruding end of the frame member in the covered protruding frame member to the back surface of the end of the frame member in the covered frame member adjacent to the covering protruding end.

2. As the plurality of frame members, a covered frame member is provided, in which a covering material having heat insulation and airtightness is adhered to the back surface of the frame member, and further, a covered recessed frame member is used in which the covering material is set back from at least one end of the frame member, A method for manufacturing a sash frame according to claim 1, wherein the end of the frame material on the side where the covering material protrudes in the covering protruding frame material and the end of the frame material on the side where the covering material retracts in the covering recessed frame material are fixed together, and the covering material protruding from the end of the covering material protruding is then adhered to the back surface of the end of the covering material retracted.

3. A method for manufacturing a sash frame according to claim 2, wherein the plurality of covered frame members include a covered frame member in which the covering material protrudes from both ends of the frame member, and a covered frame member in which the covering material is set back from both ends of the frame member.

4. The aforementioned sash frame is a four-sided sash frame formed by fixing the ends of the four covered frame members adjacent to each other, A method for manufacturing a sash frame according to claim 3, wherein, among the four covered frame members, a covered frame member arranged to extend in the left-right direction is used in which the covering material is set back from both ends of the frame member, while a covered frame member arranged to extend in the vertical direction is used in which the covering material is set back from both ends of the frame member.

5. The method for manufacturing a sash frame according to claim 1, wherein the covering material has an overhang that extends in the width direction beyond the outer edge in the width direction of the frame material.

6. A method for manufacturing a sash frame according to any one of claims 1 to 5, wherein the covering protruding frame material is provided with a protective member that can be peeled off from the adhesive portion at the adhesive portion of the overhang of the covering material that extends beyond the frame material.

7. A frame material for a sash frame used in the method for manufacturing a sash frame described in claim 1, A frame material for a sash frame, which is a covered frame material in which the covering material is adhered to the back surface of the frame material.

8. A sash frame having a fixing portion where the adjacent ends of multiple frame members are fixed together, A covering material that covers the back surface of one end of two adjacent ends of the plurality of frame members and protrudes from that end toward the other end, An adhesive portion for adhering the covering material to the back surface of the other end, A window frame equipped with [a specific feature].

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