Opening and closing structure of soundproof window

Abstract

According to the opening and closing structure of the soundproof window, the peripheral wall of one of a first polymer connecting layer and a second polymer connecting layer at the position of a movable window protrudes outwards to form a protruding part, and a first sealing strip matched with the protruding part is arranged on the peripheral wall of the other polymer connecting layer; the first sealing strip forms a plurality of first cavity structures in the thickness direction of the soundproof window opening and closing structure, and when the window sash is combined with the movable window, the protruding part and the first sealing strip make contact with each other and are extruded to form a sealing interface; the overall rigidity of the first sealing strip is reduced through the first cavity structure, and meanwhile the heat insulation and sound insulation effects can be improved.

Description

Technical Field

[0001] The utility model relates to the field of sound insulation window structures, and particularly to a sound insulation window opening and closing structure. Background Technique

[0002] At present, with the continuous improvement of the standards of living and working environments, people have put forward higher requirements for the heat insulation and sound insulation performance of windows. The structural design of sound insulation windows aims to effectively isolate external noises to optimize the quality of the indoor sound environment.

[0003] The components of a sound insulation window mainly include a window frame, glass, and a sealing strip assembly. The window frame, as the supporting skeleton of the sound insulation window, is usually made of materials with excellent sealing performance such as aluminum alloy or plastic. It not only supports the rest of the window but also plays a significant role in blocking the transmission of sound. The glass, as the core part of the sound insulation window, mostly adopts a double-layer or triple-layer hollow design. Such glass contains an air layer inside, which can significantly reduce the transmission of sound waves. Some glass surfaces are additionally coated with special sound insulation materials to further improve their sound insulation efficiency.

[0004] In addition to the key sound insulation effects of the window sash, window frame, and glass panel itself, the sound insulation effects at the joint positions of the glass panel and between the window sash and the window frame are also crucial. Currently, seals are generally provided at both ends in the thickness direction at the joint position between the window sash and the window frame, while the sealing effect in the middle of the thickness direction is weak, resulting in relatively weak heat insulation and noise reduction effects at the joint position between the window sash and the window frame. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a sound insulation window opening and closing structure, aiming to solve the problem that currently, seals are generally provided at both ends in the thickness direction at the joint position between the window sash and the window frame, while the sealing effect in the middle of the thickness direction is weak, resulting in relatively weak heat insulation and noise reduction effects at the joint position between the window sash and the window frame.

[0006] To achieve the above purpose, the utility model provides a sound insulation window opening and closing structure, including:

[0007] A window frame, including a first layer of window frame profile, a first polymer connection layer, and a second layer of window frame profile sequentially connected in the thickness direction. The window frame includes at least one movable window and at least one fixed window;

[0008] A first glass panel part, installed in the fixed window and clamped by the first layer of window frame profile and the second layer of window frame profile;

[0009] a window sash hinged to the movable window, the window sash comprising a first layer of window sash profile, a second polymer connecting layer, and a second layer of window sash profile sequentially connected in a thickness direction, wherein a peripheral wall of one of the first polymer connecting layer and the second polymer connecting layer at the position of the movable window protrudes outward to form a protrusion, and a first sealing strip matching the protrusion is provided on the peripheral wall of the other, the first sealing strip forming a plurality of first cavity structures in a thickness direction of the soundproof window opening and closing structure, and when the window sash is combined with the movable window, the protrusion and the first sealing strip contact and squeeze each other to form a sealing interface;

[0010] The second glass panel portion is installed on the window sash and is clamped by the first layer of window sash profile and the second layer of window sash profile.

[0011] Furthermore, the first sealing strip includes two first sub-sealing strips and a second sub-sealing strip bonded to each other in the width direction. When the first sub-sealing strip and the second sub-sealing strip are combined, a plurality of first cavity structures are formed, wherein the second sub-sealing strip matches the protrusion and is softer than the first sub-sealing strip.

[0012] Furthermore, the first polymer connecting layer and the second polymer connecting layer respectively include a first sub-strip and a second sub-strip distributed in parallel and spaced apart in width, wherein the first sub-strip is respectively clamped to the first layer of window frame profile and the second layer of window frame profile, and the second sub-strip is respectively clamped to the first layer of window sash profile and the second layer of window sash profile.

[0013] Furthermore, the protrusion is arranged on the second sub-strip on the outer side of the second polymer connecting layer, and the cross section is in the shape of a Chinese character "日".

[0014] Furthermore, the protrusion is filled with sound-absorbing cotton.

[0015] Furthermore, the first polymer connecting layer and the second polymer connecting layer are made of at least one of PVC, rubber, silicone or nylon.

[0016] Furthermore, the first sealing strip is made of at least one of EPDM rubber, thermoplastic elastomer or silicone rubber.

[0017] Furthermore, the first glass panel portion and the second glass panel portion each include multiple layers of stacked glass panels, and adjacent glass panels sandwich a group of support members in a thickness direction to form a vacuum cavity.

[0018] Furthermore, the thicknesses of the multiple glass panels are different from each other.

[0019] The sound-insulating window opening and closing structure provided by the present utility model, the window frame includes at least one movable window and at least one fixed window. A window sash is installed in the movable window, and a first glass panel part is installed in the fixed window; while connecting the first window sash profile and the second window sash profile through a second polymer connection layer (preferably snap connection), heat and noise are isolated; while connecting the first window frame profile and the second window frame profile through a first polymer connection layer (preferably snap connection), heat and noise are isolated; one of the circumferential walls of the first polymer connection layer and the second polymer connection layer at the position of the movable window protrudes outward to form a protruding part, and a first sealing strip matching the protruding part is arranged on the circumferential wall of the other. When the window sash is combined with the movable window, the protruding part and the first sealing strip contact and squeeze each other to form a sealing interface. The first sealing strip forms a plurality of first cavity structures in the thickness direction of the sound-insulating window opening and closing structure. Through the first cavity structures, the overall stiffness of the first sealing strip is reduced, and at the same time, the heat insulation and sound insulation effects can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic cross-sectional view of the window frame in the sound-insulating window opening and closing structure of the first embodiment of the present utility model;

[0021] Figure 2 is a schematic cross-sectional view of the window sash in the sound-insulating window opening and closing structure of the first embodiment of the present utility model;

[0022] Figure 3 is a schematic cross-sectional view of the sound-insulating window opening and closing structure of the first embodiment of the present utility model;

[0023] Figure 4 is a schematic three-dimensional view of the sound-insulating window opening and closing structure of the first embodiment of the present utility model (window sash closed);

[0024] Figure 5 is a schematic three-dimensional view of the sound-insulating window opening and closing structure of the first embodiment of the present utility model (window sash open);

[0025] Figure 6 is a schematic cross-sectional view of the sound-insulating window opening and closing structure of the first embodiment of the present utility model;

[0026] Figure 7 is Figure 6 a partial enlarged view of.

[0027] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] Those skilled in the art can understand that, unless specifically stated, the singular forms "a", "an", "the", "above-mentioned" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model means the presence of the described features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0030] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0031] Referring to Figures 1 to 7 , in an embodiment of the present utility model, a sound insulation window opening and closing structure includes:

[0032] A window frame 100, including a first window frame profile 110, a first polymer connection layer 120 and a second window frame profile 130 sequentially connected in the thickness direction, the window frame 100 including at least one movable window 140 and at least one fixed window 150;

[0033] A first glass panel part 200, installed in the fixed window 150 and clamped by the first window frame profile 110 and the second window frame profile 130;

[0034] A window sash 300 is hinged to the movable window 140. The window sash 300 includes a first window sash profile 310, a second polymer connection layer 320, and a second window sash profile 330 that are sequentially connected in the thickness direction. Wherein, one of the first polymer connection layer 120 and the second polymer connection layer 320 at the position of the movable window 140 has an outwardly convex peripheral wall to form a protrusion 321, and a first sealing strip 400 matching the protrusion 321 is provided on the peripheral wall of the other. The first sealing strip 400 forms a plurality of first cavity structures 410 in the thickness direction of the sound insulation window opening and closing structure. When the window sash 300 is combined with the movable window 140, the protrusion 321 and the first sealing strip 400 come into contact with each other and are squeezed to form a sealing interface;

[0035] A second glass panel part 500 is installed on the window sash 300 and is clamped by the first window sash profile 310 and the second window sash profile 330.

[0036] In the prior art, in addition to the key sound insulation effect of the window sash, window frame and glass panel itself, the sound insulation effect at the joint position of the glass panel and at the joint position of the window sash and the window frame is also crucial; currently, seals are generally provided at both ends in the thickness direction at the joint position of the window sash and the window frame, while the sealing effect in the middle of the thickness direction is weak, resulting in relatively weak heat insulation and noise reduction effects at the joint position of the window sash and the window frame.

[0037] In the present utility model, the window frame 100 includes a first window frame profile 110, a first polymer connection layer 120, and a second window frame profile 130 that are sequentially connected in the thickness direction. While connecting the first window frame profile 110 and the second window frame profile 130 through the first polymer connection layer 120 (preferably snap connection), heat and noise are isolated. The window frame 100 includes at least one movable window 140 and at least one fixed window 150. Generally, the area that needs sound insulation optimization is relatively large, so movable windows 140 and fixed windows 150 need to be provided on the window frame 100. The subsequent window sash 300 is installed in the movable window 140, and the subsequent first glass panel part 200 is installed in the fixed window 150. The thickness of the window frame 100 is generally about 60 millimeters.

[0038] The first glass panel part 200 is installed in the fixed window 150 and is clamped by the first window frame profile 110 and the second window frame profile 130 in the thickness direction. The specific structure of the first glass panel part 200 can be diverse. It can be a solid structure (such as glass of various materials); it can also be a component structure, such as forming a multi-layer composite structure, so as to improve the heat insulation and sound insulation effects. Characteristics such as the thickness of the first glass panel part 200 have a great impact on the heat insulation and sound insulation effects of the entire sound insulation window.

[0039] The window sash 300 is hinged to the movable window 140. The window sash 300 includes a first window sash profile 310, a second polymer connection layer 320, and a second window sash profile 330 that are sequentially connected in the thickness direction. While the first window sash profile 310 and the second window sash profile 330 are connected through the second polymer connection layer 320 (preferably a snap connection), heat and noise are insulated. The thickness of the window sash 300 is generally about 60 millimeters. One of the first polymer connection layer 120 and the second polymer connection layer 320 at the position of the movable window 140 has an outwardly convex peripheral wall to form a protrusion 321, and a first sealing strip 400 matching the protrusion 321 is provided on the peripheral wall of the other. When the protrusion 321 is provided on the first polymer connection layer 120 of the window frame 100, the outwardly convex peripheral wall refers to protruding towards the middle of the window frame 100; when the protrusion 321 is provided on the second polymer connection layer 320 of the window sash 300, the outwardly convex peripheral wall refers to protruding towards the direction of the window frame 100. The inside of the protrusion 321 can be a solid structure, or preferably a cavity structure. The first sealing strip 400 forms a plurality of first cavity structures 410 in the thickness direction of the sound insulation window opening and closing structure. Through the first cavity structures 410, the overall stiffness of the first sealing strip 400 is reduced, and at the same time, the heat insulation and sound insulation effects can be improved. When the window sash 300 is combined with the movable window 140, the protrusion 321 and the first sealing strip 400 are in contact with each other and squeezed to form a sealing interface. Since the stiffness of the first polymer connection layer 120 and the second polymer connection layer 320 is relatively large, the sealing effect is mainly provided by the deformation of the first sealing strip 400.

[0040] The second glass panel part 500 is installed on the window sash 300 and is clamped by the first window sash profile 310 and the second window sash profile 330 in the thickness direction. The specific structure of the second glass panel part 500 can be diverse. It can be a solid structure (such as glass of various materials); it can also be a component structure, such as forming a multi-layer composite structure to improve the heat insulation and sound insulation effects. Characteristics such as the thickness of the second glass panel part 500 have a great impact on the heat insulation and sound insulation effects of the entire sound insulation window. The window frame 100 and the window sash 300 are preferably provided with relevant sealing structures at the clamping positions of the first glass panel part 200 and the second glass panel part 500 respectively, so as to hinder heat conduction and noise conduction while forming structural protection.

[0041] In summary, the window frame 100 includes at least one movable window 140 and at least one fixed window 150. A window sash 300 is installed in the movable window 140, and a first glass panel portion 200 is installed in the fixed window 150. While connecting the first window sash profile 310 and the second window sash profile 330 through the second polymer connection layer 320 (preferably snap connection), heat and noise are isolated. While connecting the first window frame profile 110 and the second window frame profile 130 through the first polymer connection layer 120 (preferably snap connection), heat and noise are isolated. One of the first polymer connection layer 120 and the second polymer connection layer 320 at the position of the movable window 140 has an outwardly convex peripheral wall to form a protrusion 321, and a first sealing strip 400 matching the protrusion 321 is provided on the peripheral wall of the other. When the window sash 300 is combined with the movable window 140, the protrusion 321 and the first sealing strip 400 come into contact with each other and are pressed to form a sealing interface. The first sealing strip 400 forms a plurality of first cavity structures 410 in the thickness direction of the soundproof window opening and closing structure. Through the first cavity structures 410, the overall stiffness of the first sealing strip 400 is reduced, and at the same time, the heat insulation and sound insulation effects can be improved.

[0042] Referring to Figures 1 to 3 , in one embodiment, the first sealing strip 400 includes a first sub-sealing strip 420 and a second sub-sealing strip 430 that are adhesively bonded to each other in the width direction. When the first sub-sealing strip 420 and the second sub-sealing strip 430 are combined, a plurality of the first cavity structures 410 are formed. Among them, the second sub-sealing strip 430 is matched with the protrusion 321 and is softer in texture than the first sub-sealing strip 420.

[0043] Since the first sealing strip 400 is to be matched with the protrusion 321, the size of the first sealing strip 400 should be relatively large. In this embodiment, considering that the size of the first sealing strip 400 is relatively large, if a relatively hard material is used, the sealing effect will be poor, and if a relatively soft material is used, it is not conducive to matching with the protrusion 321 either. Therefore, the first sealing strip 400 includes a first sub-sealing strip 420 and a second sub-sealing strip 430 that are adhesively bonded to each other in the width direction. A certain structural strength is achieved through the relatively hard first sub-sealing strip 420, and the sealing effect is achieved through the relatively soft second sub-sealing strip 430. The materials of the first sub-sealing strip 420 and the second sub-sealing strip 430 can be the same, and the difference in hardness is formed through process differences; or the materials of the first sub-sealing strip 420 and the second sub-sealing strip 430 are different, and the difference in hardness is achieved through the characteristics of the materials themselves.

[0044] Referring to Figures 1 to 3In one embodiment, the first polymer connecting layer 120 and the second polymer connecting layer 320 respectively include a first sub-strip 121 and a second sub-strip 322 that are distributed in parallel and spaced apart in width, wherein the first sub-strip 121 is respectively clamped to the first layer of window frame profile 110 and the second layer of window frame profile 130, and the second sub-strip 322 is respectively clamped to the first layer of window sash profile 310 and the second layer of window sash profile 330.

[0045] In this embodiment, taking the first polymer connecting layer 120 as an example, the first polymer connecting layer 120 is set to a split structure, which is convenient for installation. After a single first sub-strip 121 partially fails, the connection effect between the first layer of window frame profile 110 and the second layer of window frame profile 130 is maintained.

[0046] Reference Figure 2 In one embodiment, the protrusion 321 is provided on the second sub-strip 322 on the outer side of the second polymer connecting layer 320 , and has a cross section in the shape of a Chinese character "日".

[0047] In this embodiment, the protrusion 321 is disposed on the second polymer connecting layer 320, and the first sealing strip 400 is disposed on the first polymer connecting layer 120. Because the first polymer connecting layer 120 is located on the window frame 100, the first sealing strip 400 is less susceptible to adverse environmental effects such as radiation. Furthermore, the cross-sectional shape of the protrusion 321 is preferably a "日" shape, which simplifies processing while maintaining a balanced structural strength and elasticity.

[0048] In one embodiment, the protrusion 321 is filled with sound-absorbing cotton.

[0049] In this embodiment, the sound-absorbing cotton is primarily used to reduce the possibility of abnormal deformation of the protrusion 321 while minimizing the effect of weakening the heat and sound insulation of the protrusion 321. Furthermore, due to the presence of the sound-absorbing cotton, if the protrusion 321 is damaged, the sound-absorbing cotton filling inside can serve as a redundant function, providing heat and sound insulation. The density and type of sound-absorbing cotton should be appropriately selected based on the actual usage scenario.

[0050] In one embodiment, the first polymer connecting layer 120 and the second polymer connecting layer 320 are made of at least one of PVC, rubber, silicone or nylon.

[0051] In this embodiment, several preferred material options are provided for the first polymer connecting layer 120 and the second polymer connecting layer 320, each having suitable structural strength and weather resistance. Depending on the specific usage conditions, further selection from these preferred materials is possible. It should be noted that even after selecting a material type, performance differences can still be achieved depending on the process selected. The process selection is also optimized based on actual usage conditions.

[0052] In one embodiment, the first sealing strip 400 is made of at least one of EPDM rubber, thermoplastic elastomer or silicone rubber.

[0053] In this embodiment, several preferred material options (EPDM rubber, thermoplastic elastomer and silicone rubber) are provided for the first sealing strip 400 , which have suitable hardness and weather resistance. The material can also be selected from the above preferred materials according to the specific usage conditions.

[0054] In one embodiment, the first glass panel portion 200 and the second glass panel portion 500 both include stacked multiple glass panels, and adjacent glass panels sandwich a group of support members in a thickness direction to form a vacuum cavity.

[0055] In this embodiment, taking the first glass panel portion 200 as an example, the first glass panel portion 200 of the vacuum glass type is used to suppress both noise transmission and heat transfer in the thickness direction of the first glass panel portion 200. Specifically, the thickness of the glass panel and the thickness of the vacuum chamber are selected based on the actual application and are not limited here. Under the influence of atmospheric pressure, the two parallel adjacent glass panels of the multi-layer glass panel move inward, which not only affects the structure of the glass panels but also is detrimental to the maintenance of the vacuum chamber. To ensure the functionality of the vacuum chamber, a support member group is placed between the two layers of glass panels. The support member group is composed of an arrangement of pillars (generally in a rectangular array). The setting of specific support member groups needs to minimize the volume and overall number of support member groups to avoid increasing thermal conductivity and reducing the transparency of the glass; if the volume of the support member group is too small, concentrated loads will be formed in some parts, and due to the effect of atmospheric pressure, the stress between the glass panel and the support member group will increase, and the risk of glass panel breakage will increase; the shape of the pillar members is currently the most common cylindrical, in addition to square or elliptical shapes; the material of the pillar members can be stainless steel, tungsten carbide steel, chrome steel, aluminum alloy, nickel, lead, tantalum, ceramics, etc.

[0056] In one embodiment, the thicknesses of the plurality of glass panels are different from each other.

[0057] In this embodiment, by making the thicknesses of the multi-layer glass panels inconsistent, the noise transmitted through the resonance effect between the glass panels is reduced. In a preferred range, a 15% to 30% difference is formed between the thicknesses of the multi-layer glass panels pairwise. For example, the total number of layers of the glass panels is two, which are 6 mm and 8 mm respectively; or the total number of layers of the glass panels is three, which are 6 mm, 8 mm, and 10 mm respectively. In other embodiments, the thickness difference between the multi-layer glass panels can also be other ranges.

[0058] In summary, for the sound-insulating window opening and closing structure provided by the present utility model, the window frame 100 includes at least one movable window 140 and at least one fixed window 150. A window sash 300 is installed in the movable window 140, and the first glass panel part 200 is installed in the fixed window 150; while connecting the first window sash profile 310 and the second window sash profile 330 through the second polymer connection layer 320 (preferably snap connection), heat and noise are isolated; while connecting the first window frame profile 110 and the second window frame profile 130 through the first polymer connection layer 120 (preferably snap connection), heat and noise are isolated; a convex part 321 is formed by the outward convexity of the peripheral wall of one of the first polymer connection layer 120 and the second polymer connection layer 320 at the position of the movable window 140, and a first sealing strip 400 matching the convex part 321 is arranged on the peripheral wall of the other. When the window sash 300 is combined with the movable window 140, the convex part 321 and the first sealing strip 400 come into contact with each other and are squeezed to form a sealing interface. The first sealing strip 400 forms a plurality of first cavity structures 410 in the thickness direction of the sound-insulating window opening and closing structure. Through the first cavity structures 410, the overall stiffness of the first sealing strip 400 is decreased, and at the same time, the heat insulation and sound insulation effects can be improved.

[0059] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A soundproof window opening and closing structure, comprising: A window frame, including a first window frame profile, a first polymer connection layer, and a second window frame profile sequentially connected in the thickness direction, the window frame including at least one movable window and at least one fixed window; A first glass panel part, installed in the fixed window and clamped by the first window frame profile and the second window frame profile; A window sash, hinged to the movable window, the window sash including a first window sash profile, a second polymer connection layer, and a second window sash profile sequentially connected in the thickness direction, wherein, at the position of the movable window, one of the first polymer connection layer and the second polymer connection layer has an outer convex peripheral wall to form a protruding part, and a first sealing strip matching the protruding part is arranged on the peripheral wall of the other, and the first sealing strip forms a plurality of first cavity structures in the thickness direction of the soundproof window opening and closing structure. When the window sash is combined with the movable window, the protruding part and the first sealing strip contact and press against each other to form a sealing interface; A second glass panel part, installed in the window sash and clamped by the first window sash profile and the second window sash profile.

2. The soundproof window opening and closing structure according to claim 1, characterized in that, The first sealing strip includes a first sub-sealing strip and a second sub-sealing strip adhesively connected to each other in the width direction. When the first sub-sealing strip and the second sub-sealing strip are combined, a plurality of the first cavity structures are formed, wherein the second sub-sealing strip matches the protruding part and is softer in texture than the first sub-sealing strip.

3. The sound-insulating window opening and closing structure according to claim 1, wherein The first polymer connection layer and the second polymer connection layer respectively include first sub-rubber strips and second sub-rubber strips that are parallel and spaced apart in the width direction. Among them, the first sub-rubber strips are respectively clamped to the first window frame profile and the second window frame profile, and the second sub-rubber strips are respectively clamped to the first window sash profile and the second window sash profile.

4. The sound-insulating window opening and closing structure according to claim 3, wherein The protruding part is arranged on the second sub-rubber strip on the outer side of the second polymer connection layer, and the cross-section is in the shape of a "day".

5. The sound-insulating window opening and closing structure according to claim 4, characterized in that, The protruding part is filled with sound-absorbing cotton.

6. The sound-insulating window opening and closing structure according to any one of claims 1 to 5, characterized in that The first polymer connection layer and the second polymer connection layer are made of at least one of PVC, rubber, silicone, or nylon.

7. The sound-insulating window opening and closing structure according to any one of claims 1 to 5, characterized in that, The first sealing strip is made of at least one of ethylene propylene diene monomer rubber, thermoplastic elastomer, or silicone rubber.

8. The sound insulation window opening and closing structure according to any one of claims 1 to 5, characterized in that Both the first glass panel part and the second glass panel part include a plurality of stacked glass panels. Adjacent glass panels are clamped with a support member group in the thickness direction and form a vacuum cavity.

9. The sound-insulating window opening and closing structure according to claim 8, characterized in that, The thicknesses of the multiple glass panels are different from each other.

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