Sliding windows

Abstract

The present invention provides a sliding window in which heat transfer is suppressed through two adjacent sash frames at the meeting point of two glass sashes. [Solution] The sliding window 1A is equipped with multiple glass sashes 4. At the meeting point of the two glass sashes 4, the distance S5 between the widthwise extending axes (L51, L52) passing through the center of the thickness direction of the respective glass plates 5 of the inner glass sash 41 and the outer glass sash 42 is narrower than the distance S6 between the widthwise extending axes (L61, L62) passing through the center of the thickness direction of the respective sash frames 6 of the inner glass sash 41 and the outer glass sash 42.

Description

Technical Field

[0006] , ,

[0005] , ,

[0001] The present invention relates to a sliding window.

Background Art

[0002] In a conventional sliding window, by attaching a soft air shielding member to the vertical frame of the glass shoji so as to be in close contact with the opposite vertical frame when the window is closed, it is known to enhance the airtightness at the joining part of the two glass shojis (see, for example, Patent Document 1). According to this sliding window, heat insulation can be ensured by making it difficult for cold air to enter at the boundary between the shoji frames of the two glass shojis.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0007] (2) The sliding window described in (1) above may be such that the widthwise extending axis passing through the center in the thickness direction of the glass plate in the glass sash arranged on the outside coincides with the widthwise extending axis passing through the center in the thickness direction of the sash frame.

[0008] (3) The sliding window described in (1) above may be such that the widthwise extending axis passing through the center in the thickness direction of the glass plate in the glass sash arranged on the inside coincides with the widthwise extending axis passing through the center in the thickness direction of the sash frame.

[0009] (4) The sliding window described in (1) above may be such that, in the glass sash located on the inside, the widthwise extending axis passing through the center in the thickness direction of the glass plate is different from the widthwise extending axis passing through the center in the thickness direction of the sash frame, and in the glass sash located on the outside, the widthwise extending axis passing through the center in the thickness direction of the glass plate is different from the widthwise extending axis passing through the center in the thickness direction of the sash frame.

[0010] (5) Any one of the sliding windows described in (1) to (4) above may be a sliding window in which the thickness of the glass panes of the inner glass sash and the outer glass sash are different.

[0011] (6) In any one of the sliding windows described in (1) to (5) above, the glass plate is a double-glazed glass having at least one hollow layer, and the double-glazed glass may have a total thickness of at least one hollow layer exceeding 18 mm.

[0012] (7) Any one of the sliding windows described in (1) to (6) above may have the glass pane of the glass sash placed on the inside and the glass pane of the glass sash placed on the outside overlap in the thickness direction at the meeting stile.

[0013] (8) The sliding window of the present invention is a sliding window comprising a plurality of glass sashes, wherein at the meeting point of two glass sashes, the glass plate of the glass sash positioned on the inside and the glass plate of the glass sash positioned on the outside overlap in the thickness direction. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a sliding window in which heat transfer is suppressed at the meeting point of two glass sashes, through two adjacent sash frames. [Brief explanation of the drawing]

[0015] [Figure 1] This is a plan view showing a sliding window, which is a first embodiment of the present invention, in cross-section together with the wall of a building. [Figure 2] This is a plan view showing a modified example of the sliding window in Figure 1, along with a cross-sectional view of the building wall. [Figure 3] This is a plan view showing another variation of the sliding window in Figure 1, along with a cross-sectional view of the building wall. [Figure 4] This plan view shows a cross-section of a building wall, illustrating an example where the spacing between two glass panes arranged in the inward and outward directions has been narrowed by increasing the thickness of the glass panes in a sliding window. [Figure 5] This is a plan view showing a sliding window, which is a second embodiment of the present invention, in cross-section together with the wall of a building. [Figure 6] This is a plan view showing a conventional sliding window in cross-section along with the building wall. [Modes for carrying out the invention]

[0016] Hereinafter, with reference to the drawings, a sliding window which is an exemplary embodiment of the present invention and a modified example of the sliding window according to the embodiment will be described in detail. In the following description, substantially the same parts are denoted by the same reference numerals.

[0017] In FIG. 1, a sliding window 1A which is a first embodiment of the present invention is shown in cross section together with a wall 11 of a building.

[0018] The sliding window 1A is a sliding window provided with a plurality of glass panels 4. The sliding window 1A includes a plurality of glass panels 4 and a window frame 7. In the present disclosure, the sliding window 1A includes two glass panels 4, namely, an inner glass panel 41 disposed on the indoor side and an outer glass panel 42 disposed on the outdoor side. The sliding window 1A can be opened and closed by sliding the two glass panels 4 in the width direction (the left - right direction in the drawing) with respect to the window frame 7. In the figure, reference numeral 7a denotes a vertical stile of the window frame 7. In the present disclosure, the two glass panels 4 slide between the two vertical stiles 7a.

[0019] In the present disclosure, the width direction is the width direction of the sliding window 1A (the circumferential direction of the wall). However, in the present disclosure, the width direction of each of the glass panel 4, the glass plate 5, and the panel frame 6 is also the same direction as the width direction of the window frame 7. Also, in the present disclosure, the inside - outside direction is based on the indoor and outdoor, for example, the indoor side corresponds to the inside and the outdoor side corresponds to the outside. Further, in the present disclosure, the up - down direction refers to the direction orthogonal to the inside - outside direction and the width direction.

[0020] The window frame 7 is attached to an opening formed in the wall 11 of the building. In the present disclosure, the wall 11 includes an inner wall 11a disposed on the indoor side and an outer wall 11b disposed on the outdoor side. However, the structure of the wall 11 and the attachment method of the sliding window 1A are not limited to the present disclosure.

[0021] The glass panel 4 includes a glass plate 5 and a panel frame 6.

[0022] The glass plate 5 is a flat, rectangular glass plate extending in the vertical and horizontal directions. The glass plate 5 is a double-glazed glass with excellent heat insulation properties. In this disclosure, double-glazed glass is used for the glass plate 5. However, the glass plate 5 is not limited to double-glazed glass. In this disclosure, the glass plate 5 of the inner glass sash 41 is the inner glass plate 51, and the glass plate of the outer glass sash 42 is the outer glass plate 52.

[0023] The shoji frame 6 is a rectangular shoji frame extending in the vertical and width directions. The shoji frame 6 is attached to the outer edge of the glass plate 5 so as to accommodate the outer edge of the glass plate 5. In this disclosure, the shoji frame 6 is provided with a receiving recess 6b on its inner edge that can accommodate the outer edge of the glass plate 5. In this disclosure, the receiving recess 6b is provided so as to extend in an annular manner around the entire circumference of the inner edge of the shoji frame 6. The shoji frame 6 is a metal shoji frame formed from a metal such as an aluminum alloy. However, the shoji frame 6 is not limited to being made of metal. In this disclosure, the shoji frame 6 of the inner glass shoji 41 is referred to as the inner shoji frame 61, and the shoji frame of the outer glass shoji 42 is referred to as the outer shoji frame 62.

[0024] In this disclosure, the meeting stile is composed of two glass sashes 4 that are adjacent to each other in the thickness direction among a plurality of glass sashes 4. Specifically, it is composed of the vertical frames of two glass sashes 4 that are adjacent to each other in the thickness direction among a plurality of glass sashes 4 when the sliding window 4 is closed. Reference numeral 6a denotes the meeting stile side vertical frame of the sash frame 6. The meeting stile side vertical frame 6a of the sash frame 6 is the vertical frame of the sash frame 6 that is positioned at the meeting stile when the sliding window 1A is closed. In this disclosure, the meeting stile side vertical frame 6a of the inner sash frame 61 is defined as the meeting stile side vertical frame 61a, and the meeting stile side vertical frame of the outer sash frame 62 is defined as the meeting stile side vertical frame 62a.

[0025] Reference numeral L5 denotes a width-extending axis that extends in the width direction through the center of the thickness direction (inner-outer direction) of the glass plate 5. In this disclosure, the width-extending axis L5 of the inner glass plate 51 is defined as the inner glass width-extending axis L51, and the width-extending axis L5 of the outer glass plate 52 is defined as the outer glass width-extending axis L52.

[0026] Furthermore, the reference numeral L6 denotes a width-extending axis that extends in the width direction through the center of the thickness direction (inner-outer direction) of the shoji frame 6. In this disclosure, the width-extending axis L6 of the inner shoji frame 61 is defined as the inner shoji frame width-extending axis L61, and the width-extending axis L6 of the outer shoji frame 62 is defined as the outer shoji frame width-extending axis L62.

[0027] In the example shown in Figure 1, at the meeting point of the two glass sashes 4, the distance S5 (hereinafter also referred to as "glass plate center distance S5") between the widthwise extending axes L5 passing through the thicknesswise centers of the respective glass plates 5 of the inner glass sash 4 and the outer glass sash 4 is narrower than the distance S6 (hereinafter also referred to as "sash frame center distance S6") between the widthwise extending axes L6 passing through the thicknesswise centers of the respective sash frames 6 of the inner glass sash 4 and the outer glass sash 4. In other words, in this disclosure, the distance S5 between the inner glass widthwise extending axis L51 and the outer glass widthwise extending axis L52 is narrower than the sash frame center distance S6 between the inner sash frame widthwise extending axis L61 and the outer sash frame widthwise extending axis L62.

[0028] In contrast, Figure 6 shows a conventional sliding window 3 in cross-section together with the building wall 11. In the sliding window 3, the widthwise extending axis L5 of the glass plate 5 coincides with the widthwise extending axis L6 of the sash frame 6. Specifically, the widthwise extending axis L51 of the inner glass coincides with the widthwise extending axis L61 of the inner sash frame, and the widthwise extending axis L52 of the outer glass coincides with the widthwise extending axis L62 of the outer sash frame. That is, in the sliding window 3, the distance S5 between the centers of the glass plates is equal to the distance S6 between the centers of the sash frame. In the sliding window 3, a gap (hereinafter, "glass surface gap") S0 is formed between the outer glass surface F51 of the inner glass plate 51 and the inner glass surface F52 of the outer glass plate 52.

[0029] However, the inventors of the present invention have found that conventional sliding windows 3 do not take into account the heat transfer efficiency through the vertical stile 6a on the meeting side of the sash frame 6 when the sliding window 3 is closed, that is, the heat transfer efficiency of the vertical stile 6a on the meeting side of the sash frame 6 itself, and have come to recognize that there is room for improvement in the thermal insulation performance of the sash frame 6.

[0030] Since the shoji frame 6 is generally made of metal, it has good heat transfer efficiency. For this reason, the inventors of the present invention have come to realize that the thermal insulation performance of the shoji frame 6 can be improved by suppressing the heat inflow and outflow of heat, that is, the heat transfer efficiency between the vertical stiles 61a and 62a of the inner shoji frame 61 and the outer shoji frame 62, when the sliding window is closed.

[0031] The sliding window 1A in Figure 1 focuses on the glass plate 5, which has lower heat transfer efficiency than the metal sash frame 6, and narrows the gap in the thickness direction of the meeting portion 5a of the two glass plates 5 when the sliding window 1A is closed. In this disclosure, the meeting portion of the inner glass plate 51 is called the meeting portion 51a, and the meeting portion of the outer glass plate 52 is called the meeting portion 52a.

[0032] In the sliding window 1A, the distance S5 between the centers of the glass panes is narrower than the distance S6 between the centers of the sash frame, thereby narrowing the distance S1 between the outer glass surface F51 of the inner glass pane 51 and the inner glass surface F52 of the outer glass pane 52 compared to the distance S0 of the conventional sliding window 3. In other words, the area occupied by the vertical frame 61a of the inner sash frame 61 and the vertical frame 62a of the outer sash frame 62 between the outdoor edge of the meeting stile portion 51a of the inner glass pane 51 and the indoor edge of the meeting stile portion 52a of the outer glass pane 52, that is, the area occupied by the vertical frame 6a of the sash frame 6 between the outdoor edge of the meeting stile portion 51a of the inner glass pane 51 and the indoor edge of the meeting stile portion 52a of the outer glass pane 52, is kept smaller compared to the conventional sliding window 3. As a result, when the sliding window 1A is closed, the heat transfer through the vertical stile 6a on the meeting side of the sash frame 6, that is, the heat transfer through two adjacent sash frames 6, is reduced and suppressed compared to the conventional sliding window 3. Therefore, the thermal insulation performance of the sash frame 6 can be improved with the sliding window 1A.

[0033] In particular, in the sliding window 1A shown in Figure 1, the outer glass panel width axis L52 and the outer sash frame width axis L62 are aligned. In this case, to make the glass panel center distance S5 narrower than the sash frame center distance S6, it is possible to make the glass panel center distance S5 narrower than the sash frame center distance S6 by simply moving the inner glass panel 51 outward (outside) relative to the inner sash frame 61, without moving the outer glass panel 52 in the inward or outward direction relative to the outer sash frame 62, as is the case with the conventional sliding window 3 described above.

[0034] In this disclosure, the distance between the centers of the glass plates S5 is made narrower than the distance between the centers of the sash frame S6 by moving the inner glass plate 51 outward relative to the receiving recess 6b provided in the inner sash frame 61. Specifically, by using a sealing member (e.g., a gasket) 8 placed in the receiving recess 6b provided in the inner sash frame 61, the inner glass plate 51 is positioned on the outside of the receiving recess 6b so that it is shifted towards the outside.

[0035] However, as a modification of the sliding window 1A, the axis extending in the width direction of the inner glass plate L51 and the axis extending in the width direction of the inner sash frame L62 can be made to coincide. In this case, in order to make the distance between the centers of the glass plates S5 narrower than the distance between the centers of the sash frame S6, the distance between the centers of the glass plates S5 can be made narrower than the distance between the centers of the sash frame S6 by simply moving the outer glass plate 52 inward (towards the interior) relative to the outer sash frame 62, without moving the inner glass plate 51 in the inward or outward direction relative to the inner sash frame 61, as described above for the conventional sliding window 3. In this case as well, by using a sealing member (for example, a gasket) 8 placed in the receiving recess 6b provided in the outer sash frame 62, the outer glass plate 52 can be set to the interior side of the receiving recess 6b so that the outer glass plate 52 is shifted towards the interior side.

[0036] Figure 2 shows a cross-section of a sliding window 1B, a modified version of sliding window 1A, together with the building wall 11.

[0037] In this disclosure, the inner glass pane widthwise extending axis L51 and the inner sash frame widthwise extending axis L61 are different, and the outer glass pane widthwise extending axis L52 and the outer sash frame widthwise extending axis L62 are different. Specifically, the inner glass pane widthwise extending axis L51 is located on the exterior side of the inner sash frame widthwise extending axis L61, while the outer glass pane widthwise extending axis L52 is located on the interior side of the outer sash frame widthwise extending axis L62. In this case, the glass pane center distance S5 can be made narrower than the sash frame center distance S6 in the most effective way. Therefore, the sliding window 1B can most effectively improve the thermal insulation performance of the sash frame 6.

[0038] In this disclosure, in order to make the distance between the centers of the glass panes S5 narrower than the distance between the centers of the sash frames S6, the inner glass pane 51 is moved outward (outside) relative to the inner sash frame 61, and the outer glass pane 52 is moved inward (inside) relative to the outer sash frame 62, compared to the conventional sliding window 3 described above. In this case as well, similar to the sliding window 1A, by using a sealing member (e.g., a gasket) 8 placed in the receiving recess 6b provided in the sash frame 6, the two glass panes 5 can be positioned on the inside and outside of the receiving recess 6b so that they are offset to one side of the interior and the other.

[0039] Incidentally, in this disclosure, the thickness t5 of the glass plate 5 can be selected as appropriate. For example, the thickness t5 of the glass plate 5 can be made thicker than the thickness t5 of the glass plate 5 in a conventional sliding window 3.

[0040] Figure 3 shows a cross-section of a sliding window 1C, which is another variation of the sliding window 1A in Figure 1, together with the building wall 11.

[0041] In the sliding window 1C, the thickness t5 of the glass plates 5 of the inner glass sash 41 and the outer glass sash 42 are different. In this disclosure, if the thickness t5 of the inner glass plate 51 is set to thickness t51 and the thickness t5 of the outer glass plate 52 is set to thickness t52, then the thickness t51 of the inner glass plate 51 and the thickness t52 of the outer glass plate 52 are different.

[0042] In this disclosure, the thickness t52 of the outer glass plate 52 is the same as that of the outer glass plate 52 in the conventional sliding window 3, as is the case with the sliding window 1A. In contrast, the thickness t51 of the inner glass plate 51 is thicker than that of the inner glass plate 51 in the conventional sliding window 3. In this case, compared to the conventional sliding window 3, by moving the outer glass plate 52 inward relative to the outer sash frame 62, the width axis L52 of the outer glass plate is brought closer to the interior than the width axis L62 of the outer sash frame, while the width axis L51 of the inner glass plate and the width axis L61 of the inner sash frame are placed on the same axis. By simply increasing the thickness t51 of the inner glass plate 51, the outer glass surface F51 of the inner glass plate 51 and the inner glass surface F52 of the outer glass plate 52 can be brought closest to each other in the most effective way. As a result, with the sliding window 1C, similar to the modified version of the sliding window 1A, the axis extending in the width direction of the inner glass plate L51 and the axis extending in the width direction of the inner sash frame L61 can be aligned, and similar to the sliding window 1B, the distance between the centers of the glass plates S5 can be made narrower than the distance between the centers of the sash frame S6 in the most effective way.

[0043] Furthermore, as a modification of the sliding window 1C, the thickness t51 of the inner glass plate 51 remains the same as that of the conventional sliding window 3, similar to the sliding window 1A, while the thickness t52 of the outer glass plate 52 can be made thicker than that of the conventional sliding window 3. In this case, compared to the conventional sliding window 3, by moving the inner glass plate 51 outward relative to the inner sash frame 61, the width axis L51 of the inner glass plate is brought closer to the outside than the width axis L61 of the inner sash frame, while the width axis L52 of the outer glass plate and the width axis L62 of the outer sash frame are placed on the same axis. By simply increasing the thickness t52 of the outer glass plate 52, the outer glass surface F51 of the inner glass plate 51 and the inner glass surface F52 of the outer glass plate 52 can be brought closest to each other in the most effective way. In this case as well, similar to the sliding window 1A, the outer glass panel widthwise extension axis L52 and the outer sash frame widthwise extension axis L62 can be aligned, and similar to the sliding window 1B, the glass panel center distance S5 can be made narrower than the sash frame center distance S6 in the most effective way.

[0044] Figure 4 is a plan view showing a cross-section of a building wall, illustrating an example where the thickness t5 of the glass panes 5 of a sliding window is increased to narrow the distance between two glass panes 5 arranged in the inward and outward directions.

[0045] In the sliding window 1D shown in Figure 4, the thickness t5 of the glass plate 5 is greater than the thickness t5 of the glass plate 5 in the conventional sliding window 3. This makes it possible to make the distance between the centers of the glass plates S5 narrower than the distance between the centers of the sash frame S6 simply by appropriately selecting the thickness t5 of the glass plate 5.

[0046] The glass plate 5 is a double-glazed glass with at least one hollow layer R. In this case, it is preferable that the glass plate 5 as a double-glazed glass has a total thickness tr of the hollow layers R that exceeds 18 mm.

[0047] Double-glazed windows have an air gap (R) to improve insulation.

[0048] However, even when considering thermal insulation, a thickness of 16mm to 18mm in the air gap R is sufficient. Even if the thickness of the air gap R exceeds 18mm, the thermal insulation performance of the double-glazed glass will hardly improve. In addition, since the spacers that define the spacing between the 5g flat glass panes (without the air gap R) that make up the double-glazed glass are molded products, conventional double-glazed glass never had an air gap R thickness of more than 18mm. In other words, conventional double-glazed glass never had an air gap R thickness exceeding 18mm.

[0049] In contrast, as disclosed herein, when double-glazed glass is used as the glass plate 5, the thickness t5 of the glass plate 5 can be made thicker than the thickness t5 of a conventional glass plate 5 if the total thickness tr of the hollow layer R exceeds 18 mm.

[0050] In this disclosure, the glass plate 5 is a double-glazed glass, comprising two flat glass plates 5g. The glass plate 5 has an air gap (internal space) R between the two glass plates 5g. In this disclosure, the thickness t5 of the glass plate 5 is greater than that of a conventional double-glazed glass plate 5 because the thickness tr of the air gap R exceeds 18 mm.

[0051] In detail, of the two glass plates 5, the inner glass plate 51 is a double-glazed glass plate comprising two flat glass plates 5g. The inner glass plate 51 has an air gap R between the two glass plates 5g. In this disclosure, the thickness t51 of the inner glass plate 51 is thicker than the thickness t5 of a conventional double-glazed glass plate 5 because the thickness tr of the air gap R exceeds 18 mm.

[0052] Similarly, the outer glass plate 52 of the two glass plates 5 is also a double-glazed glass, consisting of two flat glass plates 5g. The outer glass plate 52 also has an air gap R between the two glass plates 5g. In this disclosure, the thickness t52 of the outer glass plate 52 is also thicker than the thickness t5 of the glass plate 5 made of conventional double-glazed glass, because the thickness tr of the air gap R exceeds 18 mm.

[0053] As shown in Figure 4, in the sliding window 1D, the thickness t51 of the inner glass plate 51 and the thickness t52 of the outer glass plate 52 are each thicker than the thickness t51 of the inner glass plate 51 and the thickness t52 of the outer glass plate 52 in the conventional sliding window 3. In the sliding window 1D, the spacing between the glass plates S5 and the spacing between the glass plates S6 are kept the same, while increasing the thickness t51 of the inner glass plate 51 and the thickness t52 of the outer glass plate 52, thereby narrowing the gap between the glass surfaces S1.

[0054] The sliding window 1D also reduces the area occupied by the vertical frame 6a on the meeting side of the sash frame 6 between the exterior edge of the meeting stile portion 51a of the interior glass plate 51 and the interior edge of the meeting stile portion 52a of the exterior glass plate 52, compared to the conventional sliding window 3. As a result, when the sliding window 1D is closed, heat transfer through the vertical frame 6a on the meeting side of the sash frame 6 is reduced and suppressed compared to the conventional sliding window 3. Therefore, the thermal insulation performance of the sash frame 6 can be improved with the sliding window 1D. Furthermore, the sliding window 1D, like the sliding window 1B, can most effectively improve the thermal insulation performance of the sash frame 6.

[0055] As disclosed herein, when the glass plate 5 is a double-glazed glass, the thickness t5 of the glass plate 5 can be increased without changing the thickness of the flat glass 5a, provided that the total thickness tr of the hollow layer R in the glass plate 5 exceeds 18 mm. In this case, by increasing the thickness t5 of the glass plate 5, the distance between the inner glass plates 51 in the thickness direction (indoor-outdoor direction) can be easily reduced.

[0056] Figure 5 shows a cross-sectional view of a sliding window 2, which is a second embodiment of the present invention, together with a building wall 11.

[0057] Sliding window 2 is also a sliding window equipped with multiple glass sashes 4. In sliding window 2, the inner glass plate 51 and the outer glass plate 52 overlap in the thickness direction at the meeting point of the two glass sashes 4.

[0058] As shown in Figure 5, when the sliding window 2 is closed, the meeting portion 5a of the two glass plates 5 extend in the width direction so as to overlap in the thickness direction. As shown in Figure 5, when the sliding window 2 is closed, the meeting portion 51a of the inner glass plate 51 and the meeting portion 52a of the outer glass plate 52 overlap in the thickness direction by a region W1 that extends in the width direction, with a gap between them in the inward and outward directions.

[0059] On the other hand, as shown in Figure 6, when the sliding window 3 is closed, a gap C0 is formed between the meeting stile portion 51a of the inner glass plate 51 and the meeting stile portion 52a of the outer glass plate 52, extending in the width direction, and consisting only of the meeting stile side vertical frame 61a of the inner sash frame 61 and the meeting stile side vertical frame 62a of the outer sash frame 62. This gap C0 area is composed only of the meeting stile side vertical frame 6a of the metal sash frame 6, penetrating the meeting stiles of the two glass sashes 4 in an inward and outward direction.

[0060] Therefore, the inventors of the present invention have come to realize that the thermal insulation performance of the sash frame 6 can also be improved by considering the positional relationship in the width direction between the inner glass plate 51 and the outer glass plate 52 when the sliding window is closed.

[0061] In contrast, the sliding window 2 focuses on the glass plate 5, which has lower heat transfer efficiency than the metal sash frame 6. As shown in Figure 5, the meeting stile side portion 51a of the inner glass plate 51 and the meeting stile side portion 52a of the outer glass plate 52 overlap in the thickness direction. As a result, in the conventional sliding window 3, the portion consisting only of the meeting stile side vertical frame 6a of the metal sash frame 6, which penetrates the meeting stiles of the two glass sashes 4 in the inward and outward direction, is blocked by the meeting stile side portion 51a of the inner glass plate 51 and the meeting stile side portion 52a of the outer glass plate 52. As a result, when the sliding window 2 is closed, heat transfer through the meeting stile side vertical frame 6a of the sash frame 6 is reduced and suppressed compared to the conventional sliding window 3. Therefore, the thermal insulation performance of the sash frame 6 can be improved with the sliding window 2.

[0062] Furthermore, the configuration in which the inner glass plate 51 and the outer glass plate 52 overlap in the width direction at the meeting stile can be used in combination with the configurations of sliding windows 1A to 1D. In this case, the thermal insulation performance of the sash frame 6 can be further improved.

[0063] The foregoing only discloses exemplary embodiments and variations of the present invention, and various modifications are possible according to the claims. For example, the various configurations adopted in each of the embodiments and variations described above can be combined with each other. [Explanation of Symbols]

[0064] 1A: Sliding window (first embodiment), 1B: Sliding window (modified version of the first embodiment), 1C: Sliding window (another modified version of the first embodiment), 1D: Sliding window, 2: Sliding window (second embodiment), 3: Sliding window (conventional), 4: Glass sash, 41: Inner glass sash, 42: Outer glass sash, 5: Glass plate, 5a: Meeting stile side portion, 5g: Flat glass, 51: Inner glass plate, 51a: Meeting stile side portion, 52: Outer glass plate, 52a: Meeting stile side portion, 6: Sash frame, 6a: Meeting stile side vertical frame, 6b: Receiving recess, 61: Inner sash frame, 61a: Meeting stile side vertical frame, 62: Outer sash frame, 62a: Meeting stile side vertical frame, 7: Window frame, 7a: Vertical frame, 8: Sealing member, F51: Outer glass surface of inner glass plate, F52: Inner glass surface of outer glass plate, L5: Width-extending axis (glass plate), L51: Width-extending axis of inner glass, L52: Width-extending axis of outer glass, L6: Width-extending axis (sash frame), L61: Width-extending axis of inner sash frame, L62: Width-extending axis of outer sash frame, R: Hollow layer, S0: Glass surface spacing (conventional), S1: Glass surface spacing (first embodiment), S5: Glass plate center spacing, S6: Sash frame center spacing

Claims

1. A sliding window with multiple glass sashes, A sliding window in which, at the meeting point of two glass sashes, the distance between the widthwise extending axes passing through the center of the thickness direction of the glass plates of the inner glass sash and the outer glass sash is narrower than the distance between the widthwise extending axes passing through the center of the thickness direction of the sash frames of the inner glass sash and the outer glass sash.

2. A sliding window according to claim 1, wherein the widthwise extending axis passing through the center in the thickness direction of the glass plate in the glass sash arranged on the outside coincides with the widthwise extending axis passing through the center in the thickness direction of the sash frame.

3. A sliding window according to claim 1, wherein the widthwise extending axis passing through the center in the thickness direction of the glass plate in the glass shoji screen arranged on the inside coincides with the widthwise extending axis passing through the center in the thickness direction of the shoji screen frame.

4. A sliding window according to claim 1, wherein in the glass sash arranged on the inside, the widthwise extending axis passing through the center in the thickness direction of the glass plate is different from the widthwise extending axis passing through the center in the thickness direction of the sash frame, and in the glass sash arranged on the outside, the widthwise extending axis passing through the center in the thickness direction of the glass plate is different from the widthwise extending axis passing through the center in the thickness direction of the sash frame.

5. A sliding window according to any one of claims 1 to 4, wherein the thickness of the glass panes of the glass sash positioned on the inside and the glass sash positioned on the outside are different.

6. The glass plate is a double-glazed glass having at least one hollow layer, The sliding window according to any one of claims 1 to 4, wherein the double-glazed glass has a total thickness of at least one hollow layer exceeding 18 mm.

7. A sliding window according to claim 1, wherein the glass plate of the glass sash arranged on the inside and the glass plate of the glass sash arranged on the outside overlap in the thickness direction at the meeting stile.

8. A sliding window with multiple glass sashes, A sliding window in which, at the meeting point of two glass sashes, the glass panes of the inner sash and the outer sash overlap in the thickness direction.

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