Partition wall sound insulation fixing device for home decoration

Abstract

The invention relates to the technical field of home decoration partition walls, and discloses a partition wall sound insulation fixing device for home decoration, which comprises a wall body, an inner-layer sound insulation felt is fixedly mounted at the front end of the wall body through an air needle, and a foundation fixing mechanism is arranged at the front end of the inner-layer sound insulation felt. The foundation fixing mechanism comprises a top keel, a bottom keel, a transverse keel and a plurality of vertical keels, the two ends of the top keel and the two ends of the bottom keel are fixedly arranged on the front side of the top and the front side of the bottom of the wall respectively through self-tapping screws, and the transverse keel is arranged between the top keel and the bottom keel. The vertical keels are evenly distributed among the top keel, the ground keel and the transverse keel, and the space between the connected vertical keels is filled with a sound insulation cotton plate. Through flexible vibration reduction, layered sound insulation and labyrinth sealing, full-band efficient sound insulation is achieved, the structure is stable, adaptability is high, installation is convenient and fast, long-term reliability is achieved, the space utilization rate is high, and practicability and attractiveness are both achieved.

Description

A sound insulation fixing device for home decoration and renovation Technical Field

[0001] This invention relates to the field of home decoration partition wall technology, specifically a sound insulation fixing device for home decoration partition walls. Background Technology

[0002] In home decoration, partition walls, as a core component for space division, not only need to meet structural stability requirements but also need to have good sound insulation performance to ensure privacy and comfort. As people's demands for acoustic experiences in their living environments increase, traditional partition wall fixing devices have gradually revealed many shortcomings and are no longer suitable for the high-quality requirements of modern home decoration. Traditional partition walls often use wooden or ordinary light steel framing rigidly connected to the wall structure. There is a lack of effective vibration damping and isolation structures between the framing and the panel, and between the framing and the building structure, forming numerous continuous sound bridges. This allows solid-borne sound (such as footsteps on floors, equipment vibration) and airborne sound (such as voices, environmental noise) to easily penetrate the partition wall, resulting in unsatisfactory sound insulation.

[0003] The existing fixed structure design of soundproof partitions has significant flaws: Firstly, the keel and panels are mostly rigidly connected by a single screw, with flat butt joints. Sealing the gaps relies on a single sealant, which, after long-term use, ages and shrinks, easily forming sound leakage channels and causing significant airborne sound leakage. Secondly, sound insulation materials are mostly placed in the keel cavity by binding or simple filling, lacking a reliable limiting and fixing structure. This makes them prone to sagging due to gravity and vibration, resulting in incomplete filling and a gradual decline in sound insulation performance over the years. Furthermore, the rigid connection of traditional fixing devices cannot adapt to the slight settlement and temperature deformation of the building structure, easily causing keel deformation and panel cracking, further compromising the integrity of the sound insulation system.

[0004] Furthermore, existing partition wall fixing devices lack adaptability and ease of installation. The keel and connectors are mostly designed with fixed dimensions, making it difficult to flexibly adapt to different apartment layouts and sound insulation needs. Moreover, the installation process relies on complex welding or on-site cutting, resulting in low construction efficiency. While some high-end sound insulation devices can improve noise reduction, they suffer from problems such as heavy structure, large space occupation, and high cost, making them unsuitable for small apartments. Therefore, developing a home partition wall sound insulation fixing device that combines high-efficiency sound insulation, structural stability, convenient installation, strong adaptability, and long-term reliability has become a pressing technical challenge for the industry. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sound insulation fixing device for home decoration partitions, which solves the problems of traditional rigid partition connections forming sound bridges, poor sound insulation effect, easy sound leakage, easy displacement of sound insulation materials, easy cracking of structure, and insufficient long-term reliability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a soundproofing fixing device for a partition wall used in home decoration, comprising a wall body, wherein an inner layer of soundproofing felt is fixedly installed at the front end of the wall body by air needles, and a base fixing mechanism is provided at the front end of the inner layer of soundproofing felt, the base fixing mechanism comprising a top joist, a bottom joist, a horizontal joist and several vertical joists, the two ends of the top joist and the bottom joist are respectively fixed to the front top and front bottom sides of the wall body by self-tapping screws, the horizontal joists are arranged between the top joist and the bottom joist, the vertical joists are evenly distributed between the top joist, the bottom joist and the horizontal joists, and soundproofing cotton boards are filled between the vertical joists, the upper and lower ends of the rear ends of the vertical joists are connected to the top joist, the bottom joist and the horizontal joists by cantilevered floating connectors, and the top two sides of the top joist and the bottom two sides of the bottom joist are connected to the wall body by damping buffer components.

[0007] Preferably, an inner gypsum board is fixedly installed at the front end of the basic fixing mechanism, an outer sound insulation felt is fixedly installed at the front end of the inner gypsum board by an air needle, and an outer gypsum board is fixedly installed at the front end of the outer sound insulation felt.

[0008] Preferably, both the inner and outer sound insulation felts are installed using a double-layer staggered joint method.

[0009] Preferably, both the inner and outer gypsum board panels include a central gypsum board and two side gypsum boards. The central gypsum board has female tenon grooves on both sides, and the side gypsum boards have male tenon protrusions on their inner ends. A labyrinthine gap channel is formed between the female tenon grooves and the male tenon protrusions, and they are connected and fixed by sealant.

[0010] Preferably, the top keel and the ground keel are both designed as U-shaped groove structures, the transverse keel is designed as an I-shaped groove structure, and the grooves of the top keel, the ground keel and the transverse keel are all integrally formed with shock-absorbing and positioning ribs.

[0011] Preferably, both ends of the vertical keel are connected to the top keel, the ground keel and the transverse keel through elastic telescopic compensation connecting strips. The front ends of the top keel, the ground keel and the transverse keel are provided with array-type protruding ribs. The top end of the top keel and the bottom end of the ground keel are fixedly installed with wave-shaped elastic wings.

[0012] Preferably, the inner end of the vertical keel is provided with wedge plates on both the upper and lower sides, and the sound insulation cotton board is limited and fixed by the wedge plates.

[0013] Preferably, each of the connected vertical keels has a keel web plate fixedly installed at the middle of its rear end, and the surface of each keel web plate is provided with staggered, gradually changing hollow sound-absorbing grooves.

[0014] Preferably, the damping buffer assembly includes an L-shaped corner connector, the ends of which are respectively fixedly installed on the top joists and the bottom joists. Each end of the L-shaped corner connector is fixedly installed with a first fixed connector, and each end of the first fixed connector is fixedly installed with an inner anchor bolt, which is fixedly installed on the surface of the wall. Each outer surface of the inner anchor bolt is fixedly installed with an outer damping sleeve, and the outer damping sleeve and the inner anchor bolt are not coaxial.

[0015] Preferably, the cantilevered floating connector includes two second fixed connecting seats, which are movably connected by an arc-shaped elastic arm, and the ends of the arc-shaped elastic arm are connected to the interior of the corresponding second fixed connecting seat by a coil spring.

[0016] This invention provides a soundproofing and fixing device for home decoration partition walls. It offers the following advantages: 1. This invention constructs a comprehensive soundproofing system through a synergistic design of "flexible vibration reduction, layered sound insulation, and labyrinth sealing." On one hand, the non-rigid connection structure of the cantilevered floating connectors and damping buffer components cuts off the solid-borne sound transmission path at its source. Combined with the staggered, gradually changing hollowed-out sound-absorbing grooves in the keel web, it achieves multi-level attenuation of low-frequency vibration noise. On the other hand, the double-layered staggered sound insulation felt, the densely filled sound insulation cotton board, and the labyrinthine gap channels formed by mortise and tenon joints comprehensively block airborne sound transmission, solving the pain points of strong solid-borne sound transmission and severe sound leakage in traditional partition walls. This achieves efficient isolation of mid-to-high frequency noise across the entire frequency range, significantly improving the acoustic comfort of the home space.

[0017] 2. The U-shaped channel structure along the top and bottom keels and the I-shaped channel structure along the cross keels in this invention, combined with the integrated shock-absorbing positioning ribs and arrayed protrusions, not only ensures the rigid support capacity of the frame but also provides precise installation positioning for each component. At the same time, the elastic expansion and contraction compensation connecting strips and the wave-shaped elastic wings can adapt to temperature changes and slight settlement of the building structure, avoiding frame deformation or panel cracking caused by rigid tension. The multi-layer structure achieves independent fixation and mutual support through self-tapping screws, air pins, wedges, etc., forming a three-dimensional force system. It not only meets the load-bearing and impact resistance requirements of the partition wall but also buffers vibration stress through flexible connection components, achieving a balance between rigid support and flexible adaptation. The structural stability far exceeds that of traditional single rigid fixed partition wall devices. Attached Figure Description

[0018] Figure 1 is a perspective view of the present invention; Figure 2 is a structural schematic diagram of the basic fixing mechanism in the present invention; Figure 3 is a structural diagram of the transverse keel in the present invention; Figure 4 is an enlarged view of point A in Figure 3; Figure 5 is a structural schematic diagram of the damping buffer assembly in the present invention; Figure 6 is a structural schematic diagram of the cantilever floating connector in the present invention; Figure 7 is a rear view of the transverse keel in the present invention; Figure 8 is a structural diagram of the inner plaster panel in the present invention.

[0019] The components include: 1. Wall; 2. Inner layer sound insulation felt; 3. Foundation fixing mechanism; 301. Top joists; 302. Ground joists; 303. Horizontal joists; 304. Vertical joists; 305. Sound insulation cotton board; 306. Damping buffer assembly; 3061. L-shaped corner connector; 3062. First fixed connector; 3063. Inner anchor bolt; 3064. Outer damping sleeve; 307. Cantilever floating connector; 3071. Second fixed connector; 3072. Arc-shaped... 3073. Elastic arm; 308. Coil spring; 309. Elastic telescopic compensation connecting strip; 310. Wedge plate; 311. Vibration damping positioning rib; 312. Array-type protruding rib; 313. Keel web plate; 314. Interlaced gradient hollow sound-absorbing groove; 4. Wave-shaped elastic wing; 4. Inner gypsum board panel; 401. Center gypsum board; 402. Side gypsum board; 403. Female tenon groove; 404. Male tenon boss; 405. Sealant; 5. Outer sound insulation felt; 6. Outer gypsum board panel. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please refer to Figures 1-8. This embodiment of the invention provides a soundproofing and fixing device for home decoration partition walls. As shown in Figure 1, it includes a wall 1, which serves as the installation foundation and load-bearing base for the entire device, providing a stable installation surface for subsequent soundproofing layers and fixing mechanisms. An inner layer of soundproofing felt 2 is fixedly installed at the front end of the wall 1 using air needles. This air needle fixing method ensures a tight fit between the inner layer of soundproofing felt 2 and the wall 1, preventing gaps from forming airborne sound transmission channels. The inner layer of soundproofing felt 2 has damping and vibration reduction characteristics, which can initially suppress the transmission of wall 1 vibration to subsequent structures, while also blocking some airborne sound penetration. A base fixing mechanism 3 is provided at the front end of the inner layer of soundproofing felt 2. The base fixing mechanism 3 is the partition wall... The core support frame provides an installation carrier for various sound insulation components and panels, and its structural design achieves both vibration reduction and fixation functions. The basic fixing mechanism 3 includes a top joist 301, a bottom joist 302, a transverse joist 303, and several vertical joists 304. The top joist 301 and the bottom joist 302 serve as the upper and lower boundary frames of the basic fixing mechanism 3, providing longitudinal positioning references for the entire support structure. Both ends of the top joist 301 and the bottom joist 302 are fixed to the top front and bottom front sides of the wall 1 respectively using self-tapping screws. These self-tapping screws ensure the firmness of the connection between the top joist 301 and the bottom joist 302 and the wall 1, preventing loosening and displacement during long-term use. The crossbeam 303 is positioned between the top keel 301 and the bottom keel 302. The crossbeam 303 enhances the lateral stiffness of the foundation fixing mechanism 3, preventing lateral deformation of the frame. It also provides intermediate support points for the vertical keels 304, improving overall structural stability. The vertical keels 304 are evenly distributed between the top keel 301, the bottom keel 302, and the crossbeam 303. As vertical load-bearing components, the vertical keels 304 bear the weight of the panels and sound insulation materials, while also dividing the space into multiple independent sound insulation cavities. Sound insulation cotton boards 305 are filled between the connected vertical keels 304. These boards, filled within the cavities formed by the vertical keels 304, utilize their porous structure to absorb and reflect airborne sound, reducing noise. The vertical keel 304 is connected to the top keel 301, the bottom keel 302 and the transverse keel 303 via cantilevered floating connectors 307 at both the upper and lower ends of the vertical keel 304. The cantilevered floating connectors 307 cut off the rigid sound transmission path between the vertical keel 304 and the upper and lower keels through flexible connection, realizing vibration decoupling. The top two sides of the top keel 301 and the bottom two sides of the bottom keel 302 are connected to the wall 1 via damping buffer components 306. The damping buffer components 306 not only ensure the fixed stability of the top keel 301 and the bottom keel 302 to the wall 1, but also buffer the stress caused by vibration and structural settlement, avoiding rigid sound transmission.

[0022] In this embodiment, an inner gypsum board panel 4 is fixedly installed at the front end of the basic fixing mechanism 3. The inner gypsum board panel 4 serves as an inner protective and sound insulation carrier, which can protect the internal sound insulation structure and work together with the sound insulation material to play a sound insulation role. An outer sound insulation felt 5 is fixedly installed at the front end of the inner gypsum board panel 4 by air needles. The air needles can make the outer sound insulation felt 5 fit tightly with the inner gypsum board panel 4 to avoid gaps and sound leakage. The outer sound insulation felt 5 and the inner sound insulation felt 2 form a double-layer sound insulation structure, which further enhances the damping and vibration reduction effect. An outer gypsum board panel 6 is fixedly installed at the front end of the outer sound insulation felt 5. The outer gypsum board panel 6 serves as the outer decoration and protective layer of the partition wall. It works with the inner gypsum board panel 4 to form a double-layer panel structure, which improves the overall sound insulation and impact resistance performance.

[0023] Furthermore, both the inner sound insulation felt 2 and the outer sound insulation felt 5 are installed with double-layer staggered joints. The staggered joint installation method can avoid the formation of straight joints between the sound insulation felts, and prevent airborne sound from penetrating through the joints. Through the synergy of the double-layer structure and the staggered joint design, the damping sound insulation effect is greatly improved and the transmission of vibration energy is reduced.

[0024] Furthermore, both the inner gypsum board 4 and the outer gypsum board 6 include a central gypsum board 401 and two side gypsum boards 402. The central gypsum board 401 serves as the core of the panel, providing the main protective and sound insulation area. The two side gypsum boards 402 are spliced ​​to both sides of the central gypsum board 401 to form a complete panel layer. The central gypsum board 401 has tenon grooves 403 on both sides, which provide a precise positioning structure for splicing and extend the airborne sound penetration path. The inner ends of the side gypsum board 402 are provided with male tenon bosses 404. The male tenon bosses 404 are adapted to the female tenon grooves 403 to achieve tight splicing of the panels. A labyrinth-like gap channel is formed between the connected female tenon grooves 403 and male tenon bosses 404 and is connected and fixed by sealant 405. The labyrinth-like gap channel further extends the air sound propagation path. With the sealing effect of sealant 405, the splicing gaps are completely sealed, air sound leakage is eliminated, and the pain point of sound leakage in traditional flat panel splicing is solved.

[0025] Furthermore, both the top keel 301 and the bottom keel 302 are designed with U-shaped channel structures. The U-shaped channel structure can improve the bending stiffness of the keel, and at the same time provide installation space for the internal vibration damping positioning ribs 310 and sound insulation materials. The cross keel 303 is designed with an I-shaped channel structure. The I-shaped channel structure has better lateral force performance and can effectively resist lateral deformation to ensure the stability of the frame. The vibration damping positioning ribs 310 are integrally formed inside the channels of the top keel 301, the bottom keel 302 and the cross keel 303. The vibration damping positioning ribs 310 can not only enhance the structural strength of the keel itself, but also provide precise installation positioning for the sound insulation cotton board 305 and the connectors, avoiding sound insulation failure caused by component installation misalignment. At the same time, the force is distributed through the rib structure to reduce vibration transmission.

[0026] Furthermore, both the upper and lower ends of the vertical keel 304 are connected to the top keel 301, the ground keel 302, and the transverse keel 303 via elastic expansion and contraction compensation connecting strips 308. The elastic expansion and contraction compensation connecting strips 308 have elastic deformation capabilities, which can adapt to dimensional deviations caused by temperature changes and vibrations, avoiding hard pulling or gaps between the vertical keel 304 and the upper and lower keels, and ensuring the sealing and stability of the connection. The front ends of the top keel 301, the ground keel 302, and the transverse keel 303 are all provided with array-type protruding ribs 3. 11. The array-type protruding ribs 311 can increase the contact friction between the keel and the panel, improve the stability of the panel installation, and at the same time reduce the contact area between the two, reduce the rigid sound transmission point. The top of the top keel 301 and the bottom of the bottom keel 302 are both fixedly installed with wave-shaped elastic wings 314. The wave-shaped elastic wings 314 compensate for the dimensional deviation caused by the micro settlement of the building structure and temperature changes through their own geometric deformation, maintain the tight connection between the keel and the wall 1, avoid the sound leakage of gaps, and at the same time buffer stress and protect the keel structure.

[0027] Furthermore, wedge plates 309 are provided on both the upper and lower sides of the inner end of the vertical keel 304, and the sound insulation cotton board 305 is limited and fixed by the wedge plates 309. The wedge plates 309 mechanically fix the sound insulation cotton board 305 between the vertical keels 304, so as to prevent the sound insulation cotton board 305 from falling due to gravity or vibration and shifting, resulting in incomplete filling, and ensuring the long-term stability of the sound absorption and sound insulation effect of the sound insulation cotton board 305.

[0028] Furthermore, a keel web plate 312 is fixedly installed at the middle of the rear end of each of the connected vertical keels 304. The keel web plate 312 can enhance the connection rigidity between the vertical keels 304 and improve the stability of the overall frame. At the same time, it provides a carrier for the staggered and gradually changing hollow sound-absorbing grooves 313. The surface of the keel web plate 312 is provided with staggered and gradually changing hollow sound-absorbing grooves 313. The staggered and gradually changing hollow sound-absorbing grooves 313 disperse the vibration frequency through geometric structure design and dissipate vibration energy by using air column resonance and friction. In particular, it forms multi-level attenuation for low-frequency noise in home decoration and further suppresses the vibration transmission of the vertical keel 304 itself.

[0029] Furthermore, the damping buffer assembly 306 includes an L-shaped corner connector 3061. The L-shaped corner connector 3061 adapts to the connection angle between the top joist 301, the bottom joist 302, and the wall 1, achieving smooth force transmission. The ends of the L-shaped corner connector 3061 are respectively fixedly installed on the top joist 301 and the bottom joist 302 to ensure the firmness of the connection with the joists. Each end of the L-shaped corner connector 3061 is fixedly installed with a first fixed connector 3062. The first fixed connector 3062 provides a stable connection transition between the inner anchor bolt 3063 and the L-shaped corner connector 3061. The ends of 2 are all fixedly installed with inner anchor bolts 3063, and the inner anchor bolts 3063 are all fixedly installed on the surface of wall 1. The inner anchor bolts 3063 are the core components for fixing the damping buffer assembly 306 to the wall 1, ensuring the connection strength. The outer surface of the inner anchor bolts 3063 is fixedly installed with outer damping sleeves 3064, and the outer damping sleeves 3064 and the inner anchor bolts 3063 are not coaxial. The outer damping sleeves 3064 have flexible vibration reduction characteristics. The non-coaxial design avoids the inner anchor bolts 3063 and the outer damping sleeves 3064 from forming a rigid sound transmission channel. The rigid sound transmission between the anchor bolt and the keel is blocked by flexible isolation, while buffering the structural stress.

[0030] Furthermore, the cantilevered floating connector 307 includes two second fixed connecting seats 3071. The two second fixed connecting seats 3071 serve as connecting carriers with the vertical keel 304 and the upper and lower keels, respectively, ensuring the firmness of the connection and the accuracy of the positioning. The second fixed connecting seats 3071 are movably connected to each other by arc-shaped elastic arms 3072. The arc-shaped elastic arms 3072 have elastic deformation capabilities and can absorb vibration energy through their own deformation during vibration, achieving a flexible connection. The ends of the arc-shaped elastic arms 3072 are all connected to the inside of the corresponding second fixed connecting seats 3071 by coil springs 3073. The coil springs 3073 can enhance the elastic restoring capability of the arc-shaped elastic arms 3072, further improving the vibration reduction effect, so that the vertical keel 304 and the frame form a stable non-rigid contact, completely cutting off the main path of solid sound transmission.

[0031] Working principle: The foundation is fixed and the flexible vibration reduction works together. The top keel 301 and the bottom keel 302 are fixed to the front top and front bottom of the wall 1 with self-tapping screws to form the basic support frame of the partition wall; the horizontal keel 303 and the vertical keel 304 are connected in an alternating manner to form a three-dimensional load-bearing skeleton, providing an installation carrier for the sound insulation cotton board 305 and the panel. The key is that the vertical keel 304 is connected to the top keel 301, the bottom keel 302, and the horizontal keel 303 through the cantilever floating connector 307. The two second fixed connectors 3071 anchor the vertical keel 304 to the upper and lower keels respectively. The arc-shaped elastic arm 3072 achieves flexible hinge through the coil spring 3073, so that the vertical keel 304 and the frame form a non-rigid contact. When the wall 1 is vibrated (such as by impact or vibration transmitted from the floor), the arc-shaped elastic arm 3072 absorbs the vibration energy through its own deformation and the elastic reset of the coil spring 3073, avoiding the vibration from being directly transmitted rigidly through the keel and cutting off the main path of solid sound transmission.

[0032] The top of the top keel 301 and the bottom of the bottom keel 302 are connected to the wall 1 through the damping buffer assembly 306. The L-shaped corner connector 3061 transmits the force of the keel. The inner anchor bolt 3063 is fixed to the wall 1. The outer damping sleeve 3064 and the inner anchor bolt 3063 adopt an eccentric non-coaxial design, which not only ensures the stability of the fixation, but also blocks the rigid sound transmission between the anchor bolt and the keel through the flexible isolation of the outer damping sleeve 3064. At the same time, it buffers the stress caused by the micro settlement of the building structure and avoids the sound insulation failure caused by the deformation of the keel.

[0033] The elastic expansion and contraction compensation connecting strips 308 at the upper and lower ends of the vertical keel 304 can adapt to temperature changes and deformation caused by vibration, avoiding rigid tension or gaps between the keel and the frame; the staggered and gradually changing hollow sound-absorbing grooves 313 of the keel web plate 312 disperse the vibration frequency through geometric structure design, and dissipate vibration energy by using air column resonance and friction, further suppressing the vibration transmission of the vertical keel 304 itself, especially forming multi-level attenuation for low-frequency noise in home decoration (such as footsteps and equipment vibration).

[0034] The layered noise reduction wall 1 of the three-dimensional sound insulation structure has an inner layer of sound insulation felt 2 fixed at the front end by air needles, which forms a double-layer sound insulation structure with the outer layer of sound insulation felt 5 at the front end of the inner gypsum board 4. The double-layer staggered installation method is adopted to prevent sound waves from directly penetrating through the joints. The sound insulation felt itself has damping characteristics, which can suppress the vibration resonance of the panel and keel, convert vibration energy into heat energy consumption, and reduce the secondary transmission of airborne sound through structural vibration.

[0035] The sound insulation cotton board 305 filling the space between the vertical keels 304 is fixed by the wedge plate 309 on the inner end of the vertical keel 304 to ensure that the filling is dense and without gaps. The porous structure of the sound insulation cotton board 305 absorbs and reflects the airborne sound passing through the panel, reducing the sound wave energy. At the same time, the sound insulation cotton board 305 blocks the air convection in the keel cavity, avoids the formation of "acoustic cavity resonance", and further improves the sound insulation effect of mid-to-high frequency noise.

[0036] The inner gypsum board 4 and the outer gypsum board 6 adopt a mortise and tenon splicing structure of "central gypsum board 401 + side gypsum board 402". The male tenon boss 404 and the female tenon groove 403 interlock to form a labyrinth-like gap channel, which extends the air sound penetration path. With the fixing and sealing of the sealant 405, the gaps at the splicing of the panels are completely sealed, preventing air sound from leaking from the gaps. This solves the pain point of "sound leakage through the straight gap" in traditional flat panel splicing and achieves a dead-angle-free seal of the panel layer.

[0037] The structure is fixed and limited to prevent failure. The top keel 301 and the ground keel 302 are set as U-shaped channel structures, and the cross keel 303 is set as an I-shaped channel structure. The one-piece molded shock-absorbing and positioning ribs 310 in the channel not only provide precise installation positioning for the sound insulation cotton board 305 and the connectors, but also enhance the rigidity of the keel itself and avoid frame deformation. The array-type ribs 311 further improve the contact stability between the keel and the panel. With the multi-point fixing of self-tapping screws and air needles, it ensures that the structure of each layer is firmly installed and there is no risk of loosening.

[0038] The wavy elastic wings 314 along the top of the top keel 301 and the bottom of the bottom keel 302 can compensate for the dimensional deviations caused by the micro-settlement and temperature changes of the building structure through their own geometric deformation, maintain the tight connection between the frame and the wall 1, and avoid the formation of gaps; the elastic expansion and contraction compensation connecting strip 308 adapts to the longitudinal deformation of the vertical keel 304, prevents panel cracking and sealing failure caused by thermal expansion and contraction, and ensures the long-term stability of the sound insulation structure.

[0039] The wedge plate 309 on the inner side of the vertical keel 304 forms a mechanical limit on the sound insulation cotton board 305, preventing the sound insulation cotton board 305 from sagging or shifting, and ensuring that the filling density does not decrease; the inner layer sound insulation felt 2 and the outer layer sound insulation felt 5 are fixed by air needles, and the inner gypsum board 4 and the outer gypsum board 6 are fixed by keel protrusions and self-tapping screws. The independent fixing method of the multi-layer structure not only ensures that the functions of each layer can be performed independently, but also forms a mutually supportive force system, improving the impact resistance and service life of the overall structure.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soundproofing and fixing device for a partition wall used in home decoration, comprising a wall (1), characterized in that, The front end of the wall (1) is fixed with an inner layer of sound insulation felt (2) by air needles. The front end of the inner layer of sound insulation felt (2) is provided with a base fixing mechanism (3). The base fixing mechanism (3) includes a top joist (301), a bottom joist (302), a cross joist (303), and several vertical joists (304). The two ends of the top joist (301) and the bottom joist (302) are fixed to the front top and front bottom of the wall (1) respectively by self-tapping screws. The cross joist (303) is located between the top joist (301) and the bottom joist (302). The vertical keel (304) is evenly distributed between the top keel (301), the ground keel (302) and the transverse keel (303). The spaces between the vertical keels (304) are filled with sound insulation cotton boards (305). The upper and lower ends of the vertical keel (304) are connected to the top keel (301), the ground keel (302) and the transverse keel (303) through cantilever floating connectors (307). The top two sides of the top keel (301) and the bottom two sides of the ground keel (302) are connected to the wall (1) through damping buffer components (306).

2. The sound insulation fixing device for home decoration and renovation as described in claim 1, characterized in that, The front end of the basic fixing mechanism (3) is fixedly installed with an inner gypsum panel (4), the front end of the inner gypsum panel (4) is fixedly installed with an outer sound insulation felt (5) by an air needle, and the front end of the outer sound insulation felt (5) is fixedly installed with an outer gypsum panel (6).

3. The sound insulation fixing device for home decoration and renovation as described in claim 2, characterized in that, Both the inner layer sound insulation felt (2) and the outer layer sound insulation felt (5) are installed with double-layer staggered joints.

4. A soundproofing fixing device for home decoration and renovation partitions according to claim 2, characterized in that, The inner plaster panel (4) and the outer plaster panel (6) both include a central plasterboard (401) and two side plasterboards (402). The central plasterboard (401) has female tenon grooves (403) on both sides, and the side plasterboards (402) have male tenon bosses (404) on their inner ends. A labyrinth-like gap channel is formed between the female tenon grooves (403) and the male tenon bosses (404) and they are connected and fixed by sealant (405).

5. A soundproofing fixing device for home decoration and renovation partitions according to claim 1, characterized in that, The top keel (301) and the ground keel (302) are both U-shaped groove structures, and the transverse keel (303) is an I-shaped groove structure. The grooves of the top keel (301), the ground keel (302) and the transverse keel (303) are all integrally formed with shock-absorbing and positioning ribs (310).

6. A soundproofing fixing device for home decoration and renovation partitions according to claim 1, characterized in that, The upper and lower ends of the vertical keel (304) are connected to the top keel (301), the ground keel (302) and the transverse keel (303) through elastic telescopic compensation connecting strips (308). The front ends of the top keel (301), the ground keel (302) and the transverse keel (303) are all provided with array-type protruding ribs (311). The top end of the top keel (301) and the bottom end of the ground keel (302) are both fixedly installed with wave-shaped elastic wings (314).

7. A soundproofing fixing device for home decoration and renovation partitions according to claim 1, characterized in that, The vertical keel (304) has wedge plates (309) on both the upper and lower sides of its inner end, and the sound insulation cotton board (305) is limited and fixed by the wedge plates (309).

8. A soundproofing fixing device for home decoration and renovation partitions according to claim 1, characterized in that, The rear middle of each of the vertical keels (304) is fixedly installed with a keel web plate (312), and the surface of the keel web plate (312) is provided with staggered and gradually changing hollow sound-absorbing grooves (313).

9. A soundproofing fixing device for home decoration and renovation partitions according to claim 1, characterized in that, The damping buffer assembly (306) includes an L-shaped corner connector (3061), the ends of which are fixedly installed on the top joists (301) and the bottom joists (302), respectively. Each end of the L-shaped corner connector (3061) is fixedly installed with a first fixed connector (3062). Each end of the first fixed connector (3062) is fixedly installed with an inner anchor bolt (3063), and the inner anchor bolt (3063) is fixedly installed on the surface of the wall (1). Each outer surface of the inner anchor bolt (3063) is fixedly installed with an outer damping sleeve (3064), and the outer damping sleeve (3064) and the inner anchor bolt (3063) are not coaxial.

10. A soundproofing fixing device for home decoration and renovation partitions according to claim 1, characterized in that, The cantilevered floating connector (307) includes two second fixed connecting seats (3071), which are movably connected to each other by an arc-shaped elastic arm (3072). The ends of the arc-shaped elastic arm (3072) are connected to the inside of the corresponding second fixed connecting seat (3071) by a coil spring (3073).

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