Noise reduction structure of plastic steel window
By installing a drive plate and noise-reducing felt on the inside of the frame of the PVC window, combined with a limiting mechanism and a return spring, the problem of poor sound insulation of the middle glass of the PVC window is solved, achieving better noise reduction and light blocking effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU QIAOCHUANG DOOR & WINDOW TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-12
AI Technical Summary
When existing PVC windows have glass installed in the middle, the sound insulation effect is limited, resulting in a relatively noticeable transmission of external noise.
A noise reduction mechanism, including a drive plate and a noise reduction felt, is installed inside the frame of the PVC window. The drive plate moves the noise reduction felt to engage with the glass surface. Combined with the elasticity of the limiting mechanism and the return spring, the drive plate opens and closes, enhancing the sound insulation effect.
By combining the drive plate and the noise-reducing felt, the sound insulation effect of the PVC window is significantly improved, and it also acts as a light blocker when closed, enhancing the overall noise reduction performance.
Smart Images

Figure CN224351869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PVC window technology, and in particular to a noise reduction structure for PVC windows. Background Technology
[0002] PVC windows and doors are made primarily of polyvinyl chloride resin, with added stabilizers, colorants, fillers, UV absorbers, etc. The resin is extruded into profiles, which are then cut, welded, or screwed together to form window and door frames. They are then fitted with sealing strips, weatherstripping, hardware, etc. In order to enhance the rigidity of the profiles, steel linings are added to the cavities of profiles exceeding a certain length.
[0003] While existing PVC windows and doors have sealing structures at the frame that can partially reduce noise, the sound insulation effect of the glass installed in the middle of the window is limited, resulting in poor noise reduction when there is external noise. Therefore, we propose a noise reduction structure for PVC windows to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a noise reduction structure for PVC windows.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A noise reduction structure for a PVC window includes a window frame, a mounting frame is installed on the surface of the window frame, and glass is installed on the inner side of the mounting frame. Fixing blocks are fixed on both sides of the surface of the mounting frame, and a noise reduction mechanism is installed inside the fixing blocks. The noise reduction mechanism includes a mounting shaft, a driving plate is sleeved on the surface of the mounting shaft, and a noise reduction felt is glued to the inner side of the driving plate. A limit mechanism is fixedly connected to the outer side of the fixing blocks.
[0007] Preferably, the end of the driving plate is glued with an adhesive strip, and the surface width of the driving plate and the adhesive strip is greater than the surface width of the glass.
[0008] Preferably, the mounting shaft is mounted inside the fixing block via a bearing, and a plug-in block is fixedly connected to the outer end of the mounting shaft.
[0009] Preferably, the limiting mechanism includes a fixed frame, the fixed frame is fixedly connected to the outer side of the fixed block, and the inner wall of the fixed frame is welded to one end of the return spring, and the other end of the return spring is welded to the limiting block.
[0010] Preferably, the cross-section of the plug-in block is rectangular, and the limiting block has a groove inside that matches the plug-in block.
[0011] Preferably, a connecting post is inserted into the outer end of the fixed frame, and the end of the connecting post is fixedly connected to the limiting block.
[0012] Preferably, the connecting column is cylindrical, and a pull rod is fixedly connected to the outer end of the connecting column.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. The device can easily install the mounting shaft and the drive plate through the fixing block, so that when the drive plate drives the noise reduction felt to engage with the glass surface, it can block light and increase sound insulation and noise reduction. In addition, the adhesive strip can easily seal and close the two sets of drive plates.
[0015] 2. This device can easily push the limit block to engage with the plug-in block surface through the elastic force of the reset spring, which can easily limit the opening or closing of the drive plate. At the same time, the function of the limit block can be easily controlled through the connecting column, and the two connecting columns can be easily moved synchronously through the pull rod, which facilitates the function of pulling the connecting column. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of a noise reduction structure for a PVC window proposed in this utility model;
[0017] Figure 2 This is a three-dimensional open state schematic diagram of a PVC window noise reduction structure proposed in this utility model;
[0018] Figure 3 for Figure 1 A three-dimensional schematic diagram of the drive plate and pull rod structure in the middle;
[0019] Figure 4 for Figure 1 An exploded 3D diagram of the fixed block and fixed frame structure.
[0020] In the diagram: 1. Door and window frame; 2. Mounting frame; 3. Glass; 4. Fixing block;
[0021] 5. Noise reduction mechanism; 51. Mounting shaft; 52. Drive plate; 53. Noise reduction felt; 54. Rubber strip; 55. Insertion block;
[0022] 6. Limiting mechanism; 61. Fixed frame; 62. Return spring; 63. Limiting block; 64. Connecting column; 65. Pulling rod. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Reference Figure 1-4A noise reduction structure for a PVC window includes a window frame 1, a mounting frame 2 installed on the surface of the window frame 1, and glass 3 installed on the inner side of the mounting frame 2. Fixing blocks 4 are fixed on both sides of the surface of the mounting frame 2, and a noise reduction mechanism 5 is installed inside the fixing blocks 4. The noise reduction mechanism 5 includes a mounting shaft 51, a driving plate 52 sleeved on the surface of the mounting shaft 51, and a noise reduction felt 53 glued to the inner side of the driving plate 52. The noise reduction felt 53 is driven by the driving plate 52 to engage with the surface of the glass 3, which facilitates the increase of noise reduction effect. A limit mechanism 6 is fixedly connected to the outer side of the fixing blocks 4.
[0025] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the end of the driving plate 52 is glued with an adhesive strip 54. The surface width of the driving plate 52 and the adhesive strip 54 is greater than the surface width of the glass 3. By the fact that the width of the driving plate 52 and the adhesive strip 54 is greater than the surface width of the glass 3, they can play a role in blocking light.
[0026] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the mounting shaft 51 is installed in the fixed block 4 through the bearing, and the outer end of the mounting shaft 51 is fixedly connected to the plug block 55. By installing the bearing through the mounting shaft 51, the driving plate 52 can drive the mounting shaft 51 to rotate along the fixed block 4.
[0027] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the limiting mechanism 6 includes a fixed frame 61, the fixed block 4 is fixedly connected to the fixed frame 61, and the inner wall of the fixed frame 61 is welded to one end of the reset spring 62. The other end of the reset spring 62 is welded to the limiting block 63. Through the elastic force of the reset spring 62 itself, the limiting block 63 can be easily pushed to reset.
[0028] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the cross-section of the plug-in block 55 is set as a rectangle, and the inside of the limiting block 63 is provided with a groove that matches the plug-in block 55. By fitting the limiting block 63 onto the surface of the plug-in block 55, the driving plate 52 can be conveniently limited after being opened or unfolded.
[0029] Furthermore, refer to Figure 3 and Figure 4 It can be seen that a connecting post 64 is inserted at the outer end of the fixed frame 61, and the end of the connecting post 64 is fixedly connected to the limiting block 63. By moving the connecting post 64, the limiting block 63 can be easily moved along the inside of the fixed frame 61.
[0030] Furthermore, refer to Figure 3 and Figure 4It can be seen that the connecting post 64 is cylindrical. By making the connecting post 64 cylindrical, wear between it and the fixed frame 61 can be reduced. The outer end of the connecting post 64 is fixedly connected to the pull rod 65. The pull rod 65 can conveniently and synchronously drive the two connecting posts 64 to move.
[0031] Working principle: When this utility model is in use, when the door / window frame 1 is in use, according to the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 When the pull rod 65 is pulled, the connecting column 64 can move the limiting block 63 away from the surface of the plug block 55. At this time, the driving plate 52 can drive the mounting shaft 51 to rotate along the inside of the fixed block 4. When the driving plate 52 drives the noise reduction felt 53 to engage with the surface of the glass 3, the driving plate 52 can drive the two sets of rubber strips 54 to squeeze each other, which facilitates the closing of the two sets of driving plates 52. At the same time, after the driving plate 52 is closed or unfolded, the pull rod 65 is released. Through the elastic force of the return spring 62 itself, the limiting block 63 can be reset and engaged with the surface of the plug block 55, which facilitates the function of the limiting driving plate 52.
[0032] The above is the complete working principle of this utility model.
[0033] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.
[0034] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
[0035] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. A noise reduction structure for PVC windows, comprising a window / door frame (1), characterized in that, The surface of the door and window frame (1) is fitted with a mounting frame (2), and the inner side of the mounting frame (2) is fitted with glass (3). Fixing blocks (4) are fixed on both sides of the surface of the mounting frame (2), and a noise reduction mechanism (5) is installed inside the fixing block (4). The noise reduction mechanism (5) includes a mounting shaft (51), a drive plate (52) is sleeved on the surface of the mounting shaft (51), and a noise reduction felt (53) is glued to the inner side of the drive plate (52). A limit mechanism (6) is fixedly connected to the outer side of the fixing block (4).
2. The noise reduction structure for a PVC window according to claim 1, characterized in that, The end of the drive plate (52) is glued with a strip (54), and the surface width of the drive plate (52) and the strip (54) is greater than the surface width of the glass (3).
3. The noise reduction structure for a PVC window according to claim 1, characterized in that, The mounting shaft (51) is mounted in the fixed block (4) by bearings, and the outer end of the mounting shaft (51) is fixedly connected to the plug block (55).
4. The noise reduction structure for a PVC window according to claim 3, characterized in that, The limiting mechanism (6) includes a fixed frame (61), the fixed frame (61) is fixedly connected to the outside of the fixed block (4), and the inner wall of the fixed frame (61) is welded to one end of the reset spring (62), and the other end of the reset spring (62) is welded to the limiting block (63).
5. The noise reduction structure for a PVC window according to claim 4, characterized in that, The cross-section of the plug-in block (55) is rectangular, and the inside of the limiting block (63) is provided with a groove that matches the plug-in block (55).
6. The noise reduction structure for a PVC window according to claim 4, characterized in that, A connecting post (64) is inserted into the outer end of the fixed frame (61), and the end of the connecting post (64) is fixedly connected to the limiting block (63).
7. The noise reduction structure for a PVC window according to claim 6, characterized in that, The connecting column (64) is cylindrical, and a pull rod (65) is fixedly connected to the outer end of the connecting column (64).