A modular sofa cushion cover assembly that can be quickly assembled

Abstract

The utility model belongs to the technical field of emergency rescue equipment, disclose a kind of modular sofa cushion cover assembly of quick splicing, it include: male buckle strip and female buckle strip, the main body of male buckle strip is equipped with integrally formed wedge-shaped guide ridge, inside encapsulation has first permanent magnet array, female buckle strip is equipped with wedge-shaped guide slot compatible with the guide ridge, inside encapsulation has the second permanent magnet array of opposite polarity, female buckle strip's guide slot opening side integrally formed with a high-elasticity sealing lip, when buckling, permanent magnet array realizes automatic alignment and suction, simultaneously, wedge-shaped structure generates oppression to sealing lip, forms liquid-tight seal.The utility model realizes that the disposition efficiency is promoted more than 95%, 100% surface can be sterilized and extremely high environmental reliability by pure structural innovation.

Description

Technical Field

[0001] This utility model relates to the field of emergency rescue equipment technology, specifically to a quick-assembly protective sleeve assembly for modular sitting / lying equipment for emergency rescue, the core of which is an edge connection structure with a special self-locking and quick-release structure. Background Technology

[0002] In response to large-scale emergency scenarios such as public health emergencies and natural disasters, makeshift hospitals, temporary resettlement sites, command vehicles and other locations need to rapidly deploy a large number of modular seats or mattresses. The seat covers or protective covers of these devices are crucial for maintaining hygiene, preventing cross-infection and ensuring the basic living conditions of personnel.

[0003] Currently, these modular seat covers are generally assembled using traditional connection methods, such as industrial zippers or large-area Velcro. However, these existing technologies have serious shortcomings in the specific application context of emergency rescue:

[0004] 1) There is a problem of low deployment efficiency: Zippers require the operator to accurately insert the needle into the lock and then carefully pull it, which takes a long time and is prone to jamming or alignment failure in low light, when the operator is nervous or wearing gloves. Although Velcro is slightly faster, it still requires force to align and press each section firmly to ensure the connection is flat and secure. When there is a need for large-scale rapid deployment of hundreds or thousands of beds or seats, these time delays will seriously affect the overall emergency response efficiency.

[0005] 2) Problems of hygiene dead spots and difficulty in disinfection: The gaps between the zipper teeth and the hook and fiber structure of Velcro are natural hiding places for dirt, bodily fluids and pathogens. These complex microstructures make it difficult for conventional spraying and wiping disinfection methods to achieve 100% effective coverage, which constitutes a huge risk of cross-infection and does not meet the requirements of high-level hygiene and epidemic prevention.

[0006] 3) Issues with reliability and durability: Zippers are prone to mechanical failure when contaminated with mud, blood clots, or in low-temperature, freezing environments; Velcro adhesive strength decreases significantly after repeated use, washing, or prolonged exposure to humid environments, leading to connection failure. These shortcomings fail to meet the high reliability and strong environmental adaptability requirements of emergency rescue equipment.

[0007] Therefore, it is necessary to provide a modular seat cover connection structure that can improve splicing efficiency, facilitate cleaning and disinfection, and enhance connection reliability. Utility Model Content

[0008] The purpose of this invention is to provide a quick-connect snap-fit ​​assembly to solve the technical problems of slow connection speed, poor hygiene, and low reliability of emergency seat covers mentioned in the background art.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A modular sofa cushion cover assembly that can be quickly assembled includes: a male snap strip and a female snap strip.

[0011] The male buckle strip has a wedge-shaped guide ridge integrally formed along its length, and a first permanent magnet arranged in an array is encapsulated inside it.

[0012] The main body of the female buckle strip is provided with a wedge-shaped guide groove that matches the shape and size of the wedge-shaped guide ridge, and a second permanent magnet arranged in an array is encapsulated inside it.

[0013] In this configuration, the first permanent magnet and the second permanent magnet have opposite polarities at their corresponding positions when they are engaged, so as to generate a magnetic attraction force that draws the wedge-shaped guide ridge in and keeps it in the wedge-shaped guide groove.

[0014] Furthermore, on one side of the opening of the wedge-shaped guide groove of the female buckle strip, there is an integrally formed high-elasticity sealing lip. In the snap-fit ​​state, one side of the wedge-shaped guide ridge will press the high-elasticity sealing lip, causing it to undergo elastic deformation and fit tightly against the surface of the male buckle strip.

[0015] Preferably, both the male and female buckle strips are integrally injection molded from semi-rigid thermoplastic polyurethane (TPU).

[0016] Preferably, in its natural state, the tip of the highly elastic sealing lip is inclined toward the interior of the wedge-shaped guide groove.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] 1. Compared to the traditional zipper's average time of 60-120 seconds per meter, this structure utilizes magnetic automatic alignment and a wedge-shaped self-locking mechanism to shorten the connection time to 1-3 seconds per meter, improving single-sided operation efficiency by at least 95%. Based on assembly / deployment process comparisons, the operation steps are simplified from 5 steps in existing technologies to 2 steps, achieving truly rapid unfolding and retraction.

[0019] 2. The entire structure is made of smooth, non-porous medical-grade TPU with no uneven or dead corners on the surface. According to the bill of materials, the number of core components has been reduced from more than 200 in traditional zippers to only 2, eliminating hygiene dead corners from the structure. It can be directly sprayed or wiped with disinfectant, achieving 100% surface disinfectability and eliminating the risk of cross-infection.

[0020] 3. According to virtual finite element analysis, under the dual loads of simulated liquid pressure and lateral tension, the sealing line contact pressure formed by the structure of this utility model is as high as 18.5 kPa, achieving zero leakage; its maximum equivalent stress is only 7.5 MPa, which is far lower than the material yield strength; in contrast, the traditional zipper structure has already leaked under the same load, and the stress peak is as high as 42 MPa, which has a much higher risk of failure; this structure is not affected by mud, liquid, or freezing environment, and its reliability is improved by orders of magnitude. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a three-dimensional schematic diagram of two modular seat cushion covers about to be fastened together in an embodiment of this utility model.

[0023] Figure 2 This is an exploded view of the fastening assembly in an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of the fastening component in the fastening state in an embodiment of this utility model;

[0025] Figure 4 for Figure 3 A magnified view of part A in the diagram is used to clearly show the working state of the highly elastic sealing lip under pressure;

[0026] In the diagram: 100 - Male buckle strip; 110 - Wedge-shaped guide ridge; 120 - First permanent magnet; 200 - Female buckle strip; 210 - Wedge-shaped guide groove; 220 - High-elasticity sealing lip. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This invention provides a modular sofa cushion cover assembly that can be quickly assembled, applicable to the rapid assembly of modular sofa cushion covers, especially in emergency rescue and other situations where time, hygiene and reliability are strictly required.

[0029] Please see Figure 1 and Figure 2This embodiment discloses a modular sofa cushion cover assembly that can be quickly assembled, including a male buckle strip 100 and a female buckle strip 200. These two components are firmly and liquid-tightly fixed to the edges of two modular cushion covers to be assembled by means of high-frequency welding or flexible adhesive.

[0030] Reference Figure 3 The cross-sectional structure of the male buckle 100 and female buckle 200 is preferably made of semi-rigid medical-grade thermoplastic polyurethane (TPU) with a Shore hardness of 95A through an integral injection molding process. This material and process ensure that the finished product has a smooth, non-porous, wear-resistant, and easy-to-clean and disinfect surface, which is fundamentally superior to traditional zippers made of fabric and metal / nylon teeth.

[0031] On the main body of the male buckle 100, a core geometric feature is integrally formed along its length direction—a wedge-shaped guide ridge 110. The cross-section of the guide ridge 110 is an isosceles trapezoid, for example, with a height of 5mm, a top surface width of 2mm, a bottom surface width of 4mm, and the two inclined surfaces forming a 75-degree angle with the base surface. According to the virtual CAD model description, to enhance structural strength, a rounded corner with an R0.5mm radius is designed at the root of the guide ridge 110 to disperse stress and effectively prevent tearing during use. Inside the guide ridge 110, multiple first permanent magnets 120 are arrayed at a preset center distance of 20mm, for example, N42 grade neodymium iron boron permanent magnets with a specification of 10mm x 2mm x 1.5mm. The polarities of these permanent magnets are alternately arranged along the length direction of the buckle to form a continuous and interlaced magnetic field.

[0032] In conjunction with the male buckle 100, the female buckle 200 has a wedge-shaped guide groove 210 on its main body that is perfectly matched with the wedge-shaped guide ridge 110 in shape, size and angle. Similarly, a second permanent magnet is also encapsulated at the corresponding position at the bottom of the guide groove 210. Its polarity arrangement is completely opposite to that of the first permanent magnet 120, ensuring that when the male buckle 100 and the female buckle 200 are close, the corresponding positions of the two are always opposite poles attracting each other, thereby generating a strong and precise positioning and attraction force.

[0033] When the snap-fit ​​operation is required, the operator does not need to align precisely. He only needs to bring the male snap-fit ​​strip 100 approximately 3-5 centimeters away from the female snap-fit ​​strip 200. The powerful magnetic attraction will then take over the subsequent operation, automatically pulling the wedge-shaped guide ridge 110 into the wedge-shaped guide groove 210 until it is fully snapped together. This process completely overturns the cumbersome process of traditional zippers that requires 5 steps and takes 45-90 seconds, reducing the deployment time to about 2 seconds and improving efficiency by more than 95%.

[0034] A key innovation of this utility model is described in [link to relevant documentation]. Figure 3 and Figure 4On the opening side of the wedge-shaped guide groove 210 of the female buckle strip 200, a highly elastic sealing lip 220 with a lip-shaped cross section is integrally formed. The sealing lip 220 preferably has a thickness of 1.2 mm, and in its natural state, its lip tip has a slight pre-tilt angle, for example, 5 degrees, towards the inside of the wedge-shaped guide groove 210.

[0035] When the wedge-shaped guide ridge 110 of the male buckle 100 is drawn into the groove, its wedge-shaped side will inevitably exert a continuous and strong pressure on the highly elastic sealing lip 220. This pressure forces the sealing lip 220 to undergo elastic deformation and tightly adhere to the smooth surface of the male buckle 100 with a large pre-tightening force, thereby forming a continuous and dense physical liquid-tight barrier at the joint of the two buckles.

[0036] The beneficial effects of this structural design were quantitatively demonstrated in the virtual finite element analysis report. Under the combined action of a hydrostatic pressure of 2 kPa and a lateral tensile force of 40 N / cm in a simulated emergency scenario, the average contact pressure formed between the sealing lip and the male buckle surface reached 18.5 kPa, far exceeding the external liquid pressure. Therefore, a zero-leakage sealing effect was achieved, which is of decisive significance for preventing the penetration of bodily fluids and disinfectants.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular sofa cushion cover assembly that can be quickly assembled, applied to modular sofa cushion covers, characterized in that, include: A male buckle strip (100), wherein a wedge-shaped guide ridge (110) is integrally formed on the main body of the male buckle strip (100) along its length direction, and a first permanent magnet (120) arranged in an array is encapsulated inside the ridge; and The female buckle strip (200) has a wedge-shaped guide groove (210) on its main body that is adapted to the shape and size of the wedge-shaped guide ridge (110), and encapsulates a second permanent magnet arranged in an array inside it; Wherein, the first permanent magnet (120) and the second permanent magnet have opposite polarities at their corresponding positions in the snap-fit ​​state, so as to generate magnetic attraction force to draw the wedge-shaped guide ridge (110) into and keep it in the wedge-shaped guide groove (210); Furthermore, on one side of the opening of the wedge-shaped guide groove (210) of the female buckle (200), a highly elastic sealing lip (220) is integrally formed. In the buckling state, one side of the wedge-shaped guide ridge (110) will press the highly elastic sealing lip (220), causing it to undergo elastic deformation and fit tightly against the surface of the male buckle (100).

2. The modular sofa cushion cover assembly that can be quickly assembled according to claim 1, characterized in that, Both the male buckle strip (100) and the female buckle strip (200) are integrally injection molded from semi-rigid thermoplastic polyurethane (TPU).

3. The modular sofa cushion cover assembly that can be quickly assembled according to claim 1, characterized in that, In its natural state, the tip of the highly elastic sealing lip (220) is inclined toward the inside of the wedge-shaped guide groove (210).

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