A mobile desk screen composed of a fire-retardant acoustic panel

Abstract

The utility model relates to a mobile desktop screen composed of flame-retardant sound absorption board, which is detachably installed on the desktop through an adapter block, a first quick-release structure is arranged between the adapter block and the desktop below, and a second quick-release structure is arranged between the adapter block and the screen above, the screen comprises a supporting frame and a flame-retardant sound absorption structure installed in the supporting frame, and the flame-retardant sound absorption structure comprises, from outside to inside, a flame-retardant decorative layer, a first sound absorption layer, a flame-retardant heat insulation layer, a second sound absorption layer and a micro-perforated resonance layer, the utility model is designed with double quick-release structures, the installation and dismounting of the screen unit do not require any tool, one person can operate in a short time, and the efficiency of office layout adjustment is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sound-absorbing board products, and in particular to a mobile desktop screen composed of flame-retardant sound-absorbing boards. Background Technology

[0002] With the increasing popularity of open-plan office environments, desktop partitions, as important facilities for space division and privacy protection, are facing growing functional demands. However, existing desktop partition technologies still have many shortcomings: The main drawbacks of existing technology: Inconvenient installation and disassembly: Traditional screens are mostly installed by bolts or glue, and tools are needed to adjust their position. The process is cumbersome and cannot meet the needs of frequent adjustments to modern office layouts.

[0003] Limited functionality: Most partitions focus only on space division and lack effective noise control and fire safety design, making it difficult to meet the needs of a high-quality office environment.

[0004] In particular, although the patent document with announcement number CN217565264U provides a quick disassembly and assembly structure, its flame retardant and sound absorption performance is insufficient; although the modular decorative sound-absorbing screen has good acoustic performance and flame retardant properties, it lacks a convenient installation and disassembly mechanism.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a mobile desktop screen composed of flame-retardant sound-absorbing panels, which would make it more valuable for industrial use. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a mobile desktop screen composed of flame-retardant sound-absorbing panels.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A portable desktop screen composed of flame-retardant sound-absorbing panels, comprising a desktop and several screens installed on the desktop; A screen is detachably installed on the desktop via an adapter block. A first quick-release structure is provided between the adapter block and the desktop below, and a second quick-release structure is provided between the adapter block and the screen above. The screen includes a support frame and a flame-retardant sound-absorbing structure installed within the support frame. The flame-retardant sound-absorbing structure, from the outside to the inside, includes a flame-retardant decorative layer, a first sound-absorbing layer, a flame-retardant heat insulation layer, a second sound-absorbing layer, and a micro-perforated resonant layer.

[0008] As a further improvement of this utility model, the first quick-release structure includes a protruding docking block disposed on the desktop and a recessed docking groove located at the bottom of the adapter block, wherein the docking block is adapted to the docking groove above.

[0009] As a further improvement of this utility model, a magnetic adsorption structure is provided between the docking block and the docking groove.

[0010] As a further improvement of this utility model, the second quick-release structure includes a quick-release block located at the bottom of the screen and a quick-release slot with a top of the adapter block, wherein the quick-release block is adapted to the quick-release slot below.

[0011] As a further improvement of this utility model, a locking bracket is installed on the desktop of at least one side of the adapter block.

[0012] As a further improvement of this utility model, the support frame is made of aluminum alloy profile and its internal cavity is filled with mineral wool.

[0013] As a further improvement of this utility model, the flame-retardant decorative layer is a flame-retardant fabric or a Class B flame-retardant plastic decorative panel, and the flame-retardant heat insulation layer is a flame-retardant polyurethane foam board.

[0014] As a further improvement of this utility model, both the first sound-absorbing layer and the second sound-absorbing layer are porous sound-absorbing materials.

[0015] As a further improvement of this utility model, the first sound-absorbing layer is melamine foam, and the second sound-absorbing layer is high-density glass wool.

[0016] As a further improvement of this utility model, a panel and several wire groove clamps are installed on the screen.

[0017] By means of the above solution, this utility model has at least the following advantages: This utility model features a dual quick-release structure design, allowing for the installation and disassembly of the screen unit without any tools, reducing the time required for a single person to operate, and greatly improving the efficiency of office layout adjustments.

[0018] This utility model's five-layer composite sound-absorbing structure achieves effective control of multi-frequency noise through the synergistic effect of multiple mechanisms (porous sound absorption, resonant sound absorption, and impedance matching), resulting in a high overall noise reduction coefficient.

[0019] The modular design of this utility model allows for the replacement of only the corresponding parts when there is partial damage, without the need for the entire unit to be scrapped, which significantly reduces the total life cycle cost.

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of a mobile desktop screen composed of flame-retardant sound-absorbing panels according to this utility model; Figure 2 yes Figure 1 A structural diagram of the mounting point between the central screen and the desktop; Figure 3 yes Figure 2 A schematic diagram of the internal structure of the screen in the picture; Figure 4 yes Figure 1 A schematic diagram of another embodiment.

[0023] The meanings of the labels in the figures are as follows.

[0024] 1. Desktop; 2. Screen; 3. Adapter block; 4. Quick-release clip; 5. Quick-release slot; 6. Locking bracket; 7. Connecting block; 8. Connecting slot; 9. Panel; 10. Cable tray clamp. Support frame 21, flame-retardant decorative layer 22, first sound-absorbing layer 23, flame-retardant heat insulation layer 24, second sound-absorbing layer 25, micro-perforated resonant layer 26. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] The first embodiment of this utility model: like Figures 1-3 As shown, a mobile desktop screen composed of flame-retardant sound-absorbing panels in this embodiment includes a desktop 1 and several screens 2 installed on the desktop 1.

[0028] A screen 2 is detachably installed on the desktop 1 via an adapter block 3. A first quick-release structure is provided between the adapter block 3 and the desktop 1 below, and a second quick-release structure is provided between the adapter block 3 and the screen 2 above.

[0029] The first quick-release structure includes a protruding docking block 7 on the desktop 1 and a recessed docking groove 8 at the bottom of the adapter block 3. The docking block 7 is adapted to the docking groove 8 above, and a magnetic adsorption structure is provided between the docking block 7 and the docking groove 8.

[0030] The second quick-release structure includes a quick-release block 4 located at the bottom of the screen 2 and a quick-release slot 5 with an adapter block 3 at the top. The quick-release block 4 is adapted to the quick-release slot 5 below.

[0031] A locking bracket 6 is installed on at least one side of the desktop 1 of the adapter block 3.

[0032] The screen 2 includes a support frame 21 and a flame-retardant sound-absorbing structure installed in the support frame 21. The flame-retardant sound-absorbing structure includes, from the outside to the inside, a flame-retardant decorative layer 22, a first sound-absorbing layer 23, a flame-retardant heat insulation layer 24, a second sound-absorbing layer 25, and a micro-perforated resonant layer 26.

[0033] The support frame 21 is made of aluminum alloy profile and its internal cavity is filled with mineral wool.

[0034] The flame-retardant decorative layer 22 is a flame-retardant fabric or a B1-grade flame-retardant plastic decorative panel, and the flame-retardant heat insulation layer 24 is a flame-retardant polyurethane foam board.

[0035] Both the first sound-absorbing layer 23 and the second sound-absorbing layer 25 are porous sound-absorbing materials.

[0036] The first sound-absorbing layer 23 is melamine foam, and the second sound-absorbing layer 25 is high-density glass wool.

[0037] Specifically, Flame-retardant decorative layer 22: Utilizing stain-resistant flame-retardant fabric or B1-grade flame-retardant plastic decorative panels, this layer not only provides an aesthetically pleasing appearance but also facilitates cleaning and maintenance, meeting the decorative needs of various office environments. The selection criteria for this layer material should comply with the B1-grade flame-retardant requirements in GB 8624-2012 standard, with a combustion drip / particulate level of d1 and a smoke toxicity level of t1.

[0038] The first sound-absorbing layer 23 is made of melamine foam. This open-cell foam structure has excellent broadband sound absorption characteristics, especially for mid-to-high frequency noise absorption. The preferred thickness of this layer is 25 mm, with a porosity greater than 95% and a density of 9 kg / m³. 3 The noise reduction coefficient (NRC) can reach over 0.75.

[0039] Flame-retardant and heat-insulating layer 24: Made of polyurethane foam board with added flame retardants, 12mm thick, with an oxygen index greater than 32, meeting the B1 flame-retardant standard. This layer not only has good fire resistance but also effectively blocks heat transmission, improving the overall safety performance of the screen.

[0040] Second sound-absorbing layer 25: Made of high-density glass wool with a density of 48kg / m³ 3 It has a thickness of 10mm and is covered with non-woven fabric to prevent fiber leakage. This layer is mainly for absorbing low-frequency noise and complements the first sound-absorbing layer, making the screen's sound absorption bandwidth wider.

[0041] Micro-perforated resonant layer 26: Made of 3mm thick wood fiberboard, with a regularly arranged array of micro-perforations on the surface. The pore diameter is 0.8mm, the pore spacing is 10mm, and the perforation rate is 6.5%. This layer further enhances the absorption effect of low-frequency sound waves through the principle of resonant sound absorption.

[0042] All layered materials are encapsulated within the support frame 21, which can be made of 6063 aluminum alloy profile with a frame width of 40mm and a thickness of 25mm. The internal cavity filling density of the profile is 80kg / m³. 3 The use of mineral wool not only improves sound insulation but also enhances overall fire resistance. Reinforced corner brackets at the four corners of the frame ensure structural stability.

[0043] The second embodiment of this utility model: like Figures 1-3 As shown, a mobile desktop screen composed of flame-retardant sound-absorbing panels in this embodiment includes a desktop 1 and several screens 2 installed on the desktop 1.

[0044] 1. Overall structural composition The screen includes a desktop 1, screens 2 (several units, adapted to the desktop size, with a single unit width of 300-800mm, height of 600-1000mm, and thickness of 25-35mm), adapter blocks 3 (1-2 for each screen 2, made of ABS engineering plastic), locking brackets 6 (1 for each corner of the desktop), panels 9 (adapted to the width of the screen units, thickness of 2-3mm), and cable tray clips 10 (1 at every 150-200mm interval). 2. Connection structure between desktop and screen (first and second quick-release structure) First quick-release structure: used for the detachable connection between adapter block 3 and desktop 1. A docking block 7 (made of 304 stainless steel, with a T-shaped cross section) is fixed on the desktop 1 and is bonded to the desktop with epoxy resin adhesive, with a peel strength ≥5MPa; the bottom of the adapter block 3 is provided with a docking groove 8 (which is adapted to the docking block 7 and has a 0.5-1mm thick silicone pad on the inner wall to improve the fit and seal). A magnetic adsorption structure is provided between the docking block 7 and the docking groove 8: 1-2 neodymium iron boron permanent magnets (5-8mm in diameter, 3-4mm in thickness, nickel-plated for rust prevention, and ≥40N attraction force) are embedded in the top of the docking block 7. Ferromagnetic gaskets (made of low carbon steel, 1-1.5mm thick) are pasted on the corresponding positions on the inner wall of the docking groove 8. The magnetic adsorption can realize the quick positioning of the adapter block 3, avoid the offset during installation, and can be separated without tools. The second quick-release structure is used for the detachable connection between the adapter block 3 and the screen 2. The bottom of the screen 2 is integrally molded with a quick-release clip 4 (made of reinforced ABS, 25-30mm long, 10-12mm wide, and 5-7mm high, with a 15-degree inclined guide surface on the outside for easy insertion); the top of the adapter block 3 has a quick-release slot 5 (compatible with the quick-release clip 4, with a slot length of 26-31mm, a slot width of 11-13mm, and a slot depth of 6-8mm, with a 0.3-0.5mm thick elastic rubber strip on the inner wall of the slot, which achieves locking through interference fit, and the insertion and removal force is controlled at 20-30N, which ensures both firm fixation and easy manual disassembly).

[0045] 3. Core structure of the screen unit (support frame + flame-retardant sound-absorbing structure) Support frame 21: Can be made of aluminum alloy profiles (U-shaped cross-section, wall thickness 1.2-1.5mm, tensile strength ≥215MPa, anodized surface treatment, oxide film thickness ≥10μm, rust prevention rating reaches 48 hours of salt spray test without corrosion). The internal cavity of the frame (width 15-25mm, height 15-25mm) is filled with centrifugal glass wool or mineral wool (density 80-100kg / m³). 3 With a thermal conductivity ≤0.04W / (m·K) and a combustion performance that meets GB 8624-2012B1 standards, and free from volatile harmful substances such as formaldehyde, it not only improves the overall rigidity of the frame (bending deformation ≤2mm / m), but also helps to enhance the heat insulation and noise reduction effect. Flame-retardant sound-absorbing structure (five-layer composite structure from the outside to the inside, with a total thickness of 20-30mm, each layer is bonded with environmentally friendly hot melt adhesive, with a bonding strength ≥0.8MPa): Flame-retardant decorative layer 22: The outer layer is a functional decorative layer, with two options available: 1) Flame-retardant fabric (material is glass fiber blended fabric, weight 200-250g / m²) 2According to the GB / T 5455-2014 vertical burning test, the afterflame time is ≤5s, the smoldering time is ≤10s, and there is no molten dripping. 2) B1 grade flame-retardant plastic decorative panel (material is PVC skin foam board, thickness 2-3mm, oxygen index ≥32%, impact strength ≥15kJ / m). 2 The surface can be printed with wood grain, solid color and other patterns to match different office styles. First sound-absorbing layer 23: Made of melamine foam (density 12-18 kg / m³) 3 With a thickness of 5-8mm, it has a sound absorption coefficient of 0.4-0.6 in the 125-4000Hz frequency range. It is lightweight and highly elastic, and can absorb high-frequency noise such as keyboard typing sounds. Flame-retardant insulation layer 24: Made of flame-retardant polyurethane foam board (density 35-45kg / m³) 3 With a thickness of 3-5mm and a thermal conductivity ≤0.03W / (m·K), its combustion performance meets GB 8624-2012 B1 level, which can block the spread of flames and reduce heat transfer, thus preventing the inner sound-absorbing material from being damaged by heat. Second sound-absorbing layer 25: High-density glass wool (density 64-80kg / m²) is used. 3 With a thickness of 8-12mm, it has a sound absorption coefficient of 0.5-0.7 in the 250-2000Hz frequency band, which can absorb low-to-mid frequency noise such as human conversation and air conditioning noise, complementing the first sound-absorbing layer. Micro-perforated resonant layer 26: Made of cold-rolled steel plate (thickness 0.8-1.2mm, galvanized surface for rust prevention), with micro-perforations (hole diameter 1-1.5mm, hole spacing 2-3mm, opening rate 8-12%), which further absorbs low-frequency noise (125-250Hz) through resonance effect, while preventing dust from entering the inner sound-absorbing material and improving service life. 4. Auxiliary stabilization and cable management structure Locking bracket 6: Installed on at least one side of the desktop 1 of the adapter block 3 (preferably 2 for each adapter block, located on both sides of the screen), made of L-shaped 304 stainless steel (thickness 1.5-2mm, length 50-80mm), one end is fixed to the desktop with screws, and the other end is equipped with an adjustment knob (M6 thread, knob material is PP plastic). Rotating the knob can make the end of the bracket fit against the side of the screen unit and apply a clamping force of 10-15N to prevent the screen from shifting during use. It is double fixed with the magnetic structure.

[0046] 5. Installation process Adapter block fixing: Align the docking slots 8 of the four adapter blocks 3 with the preset docking blocks 7 on the desktop 1 (the desktop is pre-installed at the factory, with a spacing of 600mm, corresponding to the width of the screen unit), achieve quick positioning through magnetic attraction, press the top of the adapter block to make the docking block fully embedded in the docking slot, and complete the adapter block fixing; Screen unit installation: Hold the first screen 2 and align the quick-release clip 4 at the bottom of it with the quick-release clip slot 5 of the adapter block 3. Insert it along the guide surface. A click sound indicates that it is in place. Repeat the operation to install the second screen unit. The distance between the two screen units is 600mm, which is adapted to the width of the desktop. Stable locking: Rotate the adjustment knob of each locking bracket 6 to make the end of the bracket fit against the side of the screen unit and apply a clamping force of 12N to ensure that the screen does not wobble; Functionality implementation during use: Flame retardant protection: If a small fire occurs near the tabletop (such as paper burning), the flame retardant decorative layer 22 (B1 grade PVC) can block the flame from contacting the inner layer, the flame retardant heat insulation layer 24 (polyurethane foam) slows down heat transfer, and the mineral wool in the support frame 21 does not burn, thus preventing the fire from spreading. Sound absorption and noise reduction: When two people are working together, the keyboard typing sound (high frequency, 2000-4000Hz) is absorbed by the first sound absorption layer 23, and the human voice conversation sound (mid-low frequency, 250-1000Hz) is absorbed by the second sound absorption layer 25 and the micro-perforated resonant layer 26. The measured noise transmission between the two people is reduced by 18dB, achieving the isolation effect of not being able to hear each other when speaking softly. Cable management: Cables are secured by cable tray clips 10, with only the two ends (connecting the computer and the socket) exposed. There are no tangled cables on the desktop, and the screen does not need to be moved when plugging or unplugging cables. Stability Guarantee: During office work, when personnel collide with the screen (force ≤50N), the screen is double-fixed by the magnetic structure and locking bracket, and the displacement is ≤0.8mm, eliminating the risk of tipping over. Disassembly process: Unlock the locking bracket: Rotate the adjustment knob in the opposite direction to disengage the locking bracket from the side of the screen; Disassembling the screen: Hold the top of the screen unit with both hands and apply an upward pulling force of 25N to disengage the quick release clip 4 from the quick release slot 5 and remove the screen unit; Disassembling the adapter block: Hold both sides of the adapter block 3 with both hands and apply an upward pulling force of 45N to overcome the magnetic attraction, so that the docking groove 8 is separated from the docking block 7, thus completing the disassembly of the adapter block; Storage and Reuse: The screen units, adapter blocks, and locking brackets can be sorted and placed into storage boxes for future installation or to adapt to other desktop sizes (such as a 1200mm single table, which only requires 1 screen + 2 adapter blocks).

[0047] The third embodiment of this utility model: like Figure 4 As shown, the two mobile desktop screens in this embodiment, which are composed of flame-retardant sound-absorbing panels, are based on the first embodiment, with a panel 9 and several wire groove clips 10 installed on the screen 2.

[0048] Panel 9 is a transparent PC board that can be installed on the front or side of screen 2 by means of clips or magnets, and can be used to stick signs and notes.

[0049] The cable tray clip 10 is made of elastic PP material (opening width 3-5mm, suitable for Φ5-10mm power cords and data cables). It is fixed to the side or back of the screen unit at intervals of 150-200mm. Cables can be inserted from the opening to achieve orderly storage and avoid tangling.

[0050] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mobile desktop screen composed of flame-retardant sound-absorbing panels, comprising a desktop (1) and a plurality of screens (2) installed on the desktop (1). Its features are: A screen (2) is detachably installed on the desktop (1) via a connector (3). A first quick-release structure is provided between the connector (3) and the desktop (1) below, and a second quick-release structure is provided between the connector (3) and the screen (2) above. The screen (2) includes a support frame (21) and a flame-retardant sound-absorbing structure installed in the support frame (21). The flame-retardant sound-absorbing structure includes, from the outside to the inside, a flame-retardant decorative layer (22), a first sound-absorbing layer (23), a flame-retardant heat insulation layer (24), a second sound-absorbing layer (25), and a micro-perforated resonant layer (26).

2. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, The first quick-release structure includes a protruding docking block (7) on the desktop (1) and a recessed docking groove (8) at the bottom of the adapter block (3), wherein the docking block (7) is adapted to the docking groove (8) above.

3. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 2, characterized in that, A magnetic adsorption structure is provided between the docking block (7) and the docking groove (8).

4. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, The second quick-release structure includes a quick-release block (4) located at the bottom of the screen (2) and a quick-release slot (5) with the top of the adapter block (3) provided. The quick-release block (4) is adapted to the quick-release slot (5) below.

5. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, A locking bracket (6) is installed on at least one side of the desktop (1) of the adapter block (3).

6. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, The support frame (21) is made of aluminum alloy profile and its internal cavity is filled with mineral wool.

7. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, The flame-retardant decorative layer (22) is a flame-retardant fabric or a B1-grade flame-retardant plastic decorative panel, and the flame-retardant heat insulation layer (24) is a flame-retardant polyurethane foam board.

8. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, Both the first sound-absorbing layer (23) and the second sound-absorbing layer (25) are porous sound-absorbing materials.

9. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, The first sound-absorbing layer (23) is melamine foam, and the second sound-absorbing layer (25) is high-density glass wool.

10. A portable desktop screen composed of flame-retardant sound-absorbing panels as described in claim 1, characterized in that, A panel (9) and several wire groove clamps (10) are installed on the screen (2).

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