Insulated sash door

Abstract

To provide a heat insulation sash door which has a high heat insulating effect and can be mounted on an existing sash frame.SOLUTION: The heat insulation sash door that can be mounted on an existing sash frame has a sash which is mounted on the sash frame that has three or more heat insulating layers formed by holding a plurality of plate members at predetermined intervals in the indoor and outdoor directions.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a thermally insulated sash door, and more particularly to a thermally insulated sash door that can be attached to an existing window frame (sash frame). [Background technology]

[0002] Insulated sash doors made of double-glazed glass are available on the market for the purposes of energy saving and preventing condensation. Furthermore, Patent Document 1 discloses a double-glazing unit in which newly installed retrofit glass is bonded to an existing window glass via a hollow layer support. However, there were technical challenges that made construction difficult. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-20935 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide an insulated sash door that has a high insulating effect and can be attached to an existing sash frame. [Means for solving the problem]

[0005] The insulated sash door of the present invention is an insulated sash door that can be attached to an existing sash frame, and is characterized in that it has a screen that is attached to the sash frame, and the screen forms three or more insulating layers by holding multiple boards at predetermined intervals in the indoor / outdoor directions. Here, three or more insulation layers means that there are three or more insulation layers made up of air spaces between the plate materials. If there are four plate materials, there will be three insulation layers, and if there are five plate materials, there will be four insulation layers. In the present invention, the shoji screen has an inner frame body formed by an upper frame, a lower frame, and left and right vertical frames, and the inner frame body has a frame member that can be attached to the inside and is wider than the inner frame body, and the frame member may hold multiple plate materials. In this way, the frame members can be assembled to the inner frame after holding the plurality of plate materials. Furthermore, the width dimension (thickness) of the inner frame body can be adjusted to match the existing sash frame while holding multiple plate materials.

[0006] In the present invention, the frame member may have a plurality of retaining pieces for maintaining the spacing between a plurality of plate materials, and a base material for attaching the retaining pieces, in which case the plurality of plate materials are preferably made of glass plates and resin plates, and a gap is formed between the end of the resin plate and the frame member. Since the resin plate has a larger coefficient of thermal expansion than the glass plate, it is easy to absorb the expansion and contraction. Effect of the Invention

[0007] The insulated sash door of the present invention can be installed in place of the sash door that is attached to the existing sash frame by removing it, as it can form three or more insulating layers that are thick in the indoor / outdoor directions on the same inner frame body (shoji) as the existing sash door, so that the insulated sash door can be installed without modifying the existing window structure. The insulated sash door of the present invention may be a fixed window or a sliding window, and when installing the insulated sash door of the present invention to a sliding window having an interior rail and an exterior rail, for example, it is installed so that the insulating layer protrudes outward from the exterior rail, and so that the insulating layer protrudes inward from the interior rail. This makes it possible to easily achieve energy savings without carrying out any remodeling work. [Brief description of the drawings]

[0008] [Figure 1] 1 shows an example of a structure of a thermally insulated sash door according to the present invention, in which a plate material is incorporated into a frame member. [Diagram 2]1 shows an example of mounting an insulating sash door according to the present invention to a sash frame. [Diagram 3] An example of installing a heat-insulating sash door according to the present invention to an existing sash frame is shown. [Figure 4] 1 is a vertical cross-sectional view of a sliding window with an insulated sash door according to the present invention attached to an existing sash frame. [Diagram 5] 1 is a cross-sectional view of a joint when an insulated sash door according to the present invention is installed on an existing sash frame. [Figure 6] An example of a sliding window is shown below. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The heat-insulating sash door according to the present invention is not limited to the window structure to which it is attached, such as a fixed window or a sliding window. This embodiment is an example of a sliding window in which two shoji screens are slidably attached to an existing sash frame consisting of an upper sash frame 1, a lower sash frame 2, and left and right vertical sash frames 3 and 4, as shown in Figure 6.

[0010] A longitudinal cross-sectional view of the sliding window shown in Figure 6 is shown in Figure 4, and a transverse cross-sectional view of the joint portion is shown in Figure 5. Shoji A, which is the exterior shoji screen on the outside of the room, and shoji B, which is the interior shoji screen on the inside of the room, are installed in a sliding configuration on the inside of the sash frame. Shoji A and B use the same reference numerals, and the following explanation will be based on Shoji A. The shoji A has an inner frame formed by an upper shoji frame 5, a lower shoji frame 6, and left and right vertical shoji frames 7, 8, and frame members 12a, 12b are attached to the inside in the circumferential direction, with a multiple-layer structure formed using multiple plate materials. Its structure is shown in Figure 1.

[0011] The frame members 12a, 12b on the upper frame side of the shoji screen and the frame members 12a, 12b on the lower frame side of the shoji screen are symmetrical from top to bottom. A plurality of recessed fitting portions (11a, 11a) are formed on the inside of a base material 11 having a hollow cross-sectional shape with a hollow portion 11b, and a plurality of retainer pieces 13 are fitted and connected to these. The retainer piece 13 has a sealant attachment portion 13b that seals between the fitting pieces (13a, 13a) that fit into the fitting portions (11a, 11a) of the base material 11 and the plate material, and the sealant is not shown in FIG. 1. In this embodiment, an outer panel 14 made of a glass plate is placed at the outermost part of the room, an inner panel 15 made of an acrylic plate is placed at the innermost part of the room, and a first partition panel 16 and a second partition panel 17 made of two acrylic plates are placed between them, thereby forming three insulating layers d1, d2, and d3 made of air layers.

[0012] A first partition plate material 16 and a second partition plate material 17 are sandwiched between multiple retaining pieces 13 fitted into the base material 11, an outer plate material 14 is sandwiched between the retaining piece 13 on the outside of the room and the frame member 12a on the outside of the room, and an inner plate material 15 is sandwiched between the retaining piece 13 on the inside of the room and the frame member 12b on the inside of the room. The outdoor frame member 12a and the indoor frame member 12b are each fixedly connected to the base material 11 by fixing members 18 such as screws. Furthermore, sealing members will be provided between the outer plate material 14 and the frame member 12a, and between the inner plate material 15 and the frame member 12b, but illustration of these sealing members is omitted.

[0013] The frame member 12b on the indoor side has insertion pieces (12c, 12c) formed on its outer circumferential surface, which are inserted and connected to the insertion portions 5b, 6b of the upper and lower frames 5, 6 of the shoji screen as shown in FIG. As shown in FIG. 5, the vertical shoji frames 7, 8 are also formed with insertion portions 7b, 8b in the same manner as the upper and lower shoji frames, and frame members are inserted and connected.

[0014] Figures 2 and 3 show examples of installing the outside shoji screen on the inside of the circumferential direction of the outer frame (sash frame). The existing sash upper frame 1 and sash lower frame 2 have outer rails 1a, 2a and inner rails 1b, 2b, and indoor and outdoor shoji screens are slidably attached to the rails of the sash lower frame 2 using rollers or the like. Therefore, as shown in Figures 4 and 5, while maintaining the same positional relationship in which the sliding recesses 5a, 6a, 7a, 8a on the shoji side slide along the rails on the sash side as in the sash door before the replacement, the shoji on the outside of the room has frame members 12a, 12b extending outward, and the shoji on the inside of the room has frame members 12a, 12b extending inward, thereby forming an insulating layer whose width in the thickness direction is thicker than the thickness of the inner frame body on the top, bottom, left and right sides.

[0015] In this embodiment, a glass plate is used for the outer plate 14, and an acrylic resin plate is used for the plate on the inner side thereof, thereby achieving a reduction in weight. In this case, the resin plate has a large coefficient of thermal expansion, and the outer diameter dimension expands and contracts due to changes in the outside air temperature and the room temperature. In this embodiment, as explained with reference to Figure 1, the support pin 19 shown in Figures 5 and 6 is inserted through the resin plate and the retaining piece 13 so that gaps d4, d5 are formed between the end of the plate material and the base material 11. The glass plate may have a film attached to the inside thereof that blocks ultraviolet rays or has a heat insulating property. Such a film not only protects the glass but also improves security by preventing intrusion from the outside. Having an insulating layer consisting of three air layers makes condensation less likely to occur and also improves soundproofing. This will also improve the efficiency of cooling in the summer and heating in the winter.

[0016] The insulated sash door of the present invention can be made by removing an existing glass screen from a sash frame such as an existing aluminum sash, removing the glass panels from the glass screen, and then incorporating an insulating panel assembled with the frame members shown in Figure 1 into the screen (inner frame body). [Explanation of symbols]

[0017] 1 Sash upper frame 2 Sash bottom frame 3. Vertical sash frame 4 Vertical sash frame 5 Shoji upper frame 6 Shoji bottom frame 7 Shoji vertical frame 8 Shoji vertical frame 11 Base material 12a Frame member 12b Frame member 13 Retaining piece 14 Outer plate material 15 Inner plate material 16 First partition plate 17 Second partition plate

Claims

1. An insulated sash door that can be attached to an existing sash frame, A shoji screen is attached to the sash frame, The shoji screen has three or more insulating layers formed by holding multiple boards at a predetermined interval in the indoor and outdoor directions, The shoji screen has an inner frame body formed by a shoji screen upper frame, a shoji screen lower frame, and left and right shoji screen vertical frames, the inner frame body has a frame member that can be attached to the inside and is wider than the inner frame body, and the frame member holds a plurality of plate materials, 13. A thermally insulated sash door, comprising: a frame member having a plurality of retaining pieces for maintaining the spacing between a plurality of plate materials; and a base material for attaching the retaining pieces.

2. 2. The heat-insulating sash door according to claim 1, wherein said plurality of plate members are made of glass plates and resin plates, and gaps are formed between the ends of said resin plates and said frame member.

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