3D printing and memory cotton composite pillow core

Abstract

The utility model relates to composite pillow core technical field, especially 3D printing and memory cotton composite pillow core, including open hole memory cotton layer, the inside of open hole memory cotton layer is provided with the openwork frame that unites its inside, the bottom surface fixedly connected with a plurality of arc columns of openwork frame, the bottom surface of openwork frame is provided with the bottom support cotton, the both sides of bottom support cotton are fixedly connected with the elastic band respectively, the upper surface of bottom support cotton is equipped with a plurality of arc grooves, the arc column is inserted in the inside of arc groove, openwork frame and open hole memory cotton layer realize the primary positioning through the cooperation of dovetail strip and dovetail groove, and then the insertion and fixation of arc column and arc groove are combined, form the connection structure of double firm, need not to rely on adhesive, both avoid the health hidden danger that chemical substance possibly brings about, can ensure that openwork frame and open hole memory cotton layer are not prone to relative displacement in long -term use, and the connection stability is far more than traditional simple splicing mode.

Description

Technical Field

[0001] This utility model relates to the field of composite pillow core technology, and in particular to a 3D printed and memory foam composite pillow core. Background Technology

[0002] As an indispensable item for daily sleep, the performance of pillows directly affects sleep quality and, consequently, health. Among the many types of pillows, memory foam pillows, with their excellent conformability and pressure distribution capabilities, can adapt well to the curves of the head and neck, providing suitable support, and therefore have gained widespread application and recognition in the market.

[0003] However, while traditional cotton pillow cores offer a soft feel, they have significant performance drawbacks. They lack sufficient support and are prone to deformation under pressure after prolonged use, failing to provide sustained and effective support for the head and neck. This lack of support keeps neck muscles constantly tense, easily leading to neck muscle fatigue. This not only reduces sleep comfort but also severely impacts sleep quality, and in the long run, may even induce neck-related health problems. Utility Model Content

[0004] To overcome the technical defects of the existing technology, this utility model provides a 3D printed and memory foam composite pillow core.

[0005] The technical solution adopted by this utility model is: a 3D printed and memory foam composite pillow core, including an open-cell memory foam layer, a hollow frame that fits inside the open-cell memory foam layer, multiple arc-shaped columns fixedly connected to the bottom surface of the hollow frame, a bottom support cotton provided on the bottom surface of the hollow frame, elastic bands fixedly connected to both sides of the bottom support cotton, multiple arc-shaped grooves opened on the upper surface of the bottom support cotton, the arc-shaped columns inserted into the arc-shaped grooves, and dovetail strips inserted into two dovetail grooves opened on the bottom surface of the hollow frame, the dovetail strips being fixedly connected to the open-cell memory foam layer.

[0006] By adopting the above technical solution and through the cooperation of multiple structures, a stable connection between the hollow frame and the perforated memory foam layer can be achieved. At the same time, with the synergistic effect of each component, basic support and breathability are provided for the pillow core, ensuring the basic performance of the pillow core.

[0007] Preferably, the sides of the two elastic bands furthest from the bottom support cotton are fixedly connected to the perforated memory foam layer.

[0008] By adopting the above technical solution, the elastic band can use its own elastic properties to tightly pull the bottom support cotton towards the open memory foam layer, making the fit between the arc-shaped column and the arc-shaped groove tighter, enhancing the stability of the overall structure, and at the same time playing a certain buffering role when the pillow core is under force, thus improving the comfort of use.

[0009] Preferably, the hollow frame is a 3D printed support structure, and the hollow frame is made of a two-component flexible polyurethane photosensitive resin.

[0010] By adopting the above technical solutions, 3D printing can accurately shape the complex structure of the hollow frame, while the two-component flexible polyurethane photosensitive resin gives it good elasticity and strength, so that the hollow frame can provide reliable support and has a certain degree of flexibility to adapt to the pressure changes of the head and neck, avoiding the discomfort caused by excessive support.

[0011] Preferably, the hollow frame has a lattice hollow structure, and the lattice shape of the lattice hollow structure is hexagonal.

[0012] By adopting the above technical solution, the hexagonal lattice hollow structure has excellent mechanical stability and can evenly distribute pressure. At the same time, the large number of hollow pores provide ample channels for air circulation. Combined with the breathable characteristics of the open-cell memory foam layer, it significantly improves the overall breathability of the pillow core and effectively reduces heat accumulation.

[0013] Preferably, the hollow frame has two connecting plates fixedly connected inside, the connecting plates are located above the dovetail strip, and the hollow frame and the connecting plates can be an integral structure.

[0014] By adopting the above technical solution, the connecting plate can effectively support and protect the dovetail strip, preventing it from bending or breaking due to excessive force during long-term use, thereby ensuring the connection stability of the dovetail structure and further enhancing the bonding strength between the hollow frame and the perforated memory foam layer.

[0015] Preferably, the top two sides of the connecting plate are provided with rounded chamfers.

[0016] By adopting the above technical solution, the rounded chamfer design can eliminate the sharp edges and corners at the top of the connecting plate, avoid scratching the perforated memory foam layer during the use or assembly of the pillow core, and at the same time reduce potential friction injury to the human body, thereby improving the safety and comfort of the pillow core.

[0017] Preferably, the hollow frame has rounded chamfers on both sides, and the perforated memory foam layer has rounded chamfers on both sides.

[0018] By adopting the above technical solution, the rounded chamfers on both sides make the edges of the pillow core more rounded, which can avoid pressure or friction damage to the neck, shoulders and other contact areas during use, improve the softness of contact with the human body, and make the user more comfortable when turning over and other movements.

[0019] The beneficial effects of this utility model are: the hollow frame and the perforated memory foam layer are initially positioned by the cooperation of dovetail strips and dovetail grooves, and then fixed by the insertion of arc-shaped columns and arc-shaped grooves, forming a double stable connection structure. It does not rely on adhesives, which avoids the health hazards that chemical substances may bring, and ensures that the hollow frame and the perforated memory foam layer are not prone to relative displacement during long-term use. The connection stability is far superior to the traditional simple splicing method.

[0020] The dovetail strips are inserted into the dovetail grooves, which can effectively constrain the perforated memory foam layer, greatly reducing the probability of deformation problems such as twisting and collapse of the perforated memory foam layer due to stress during the use of the pillow core. The hollow frame itself is made of two-component flexible polyurethane photosensitive resin by 3D printing, which has good structural strength and deformation resistance. As an internal skeleton, it provides a reliable support foundation for the entire pillow core. Working together with the perforated memory foam layer, it significantly extends the service life of the pillow core.

[0021] The hollow frame adopts a hexagonal lattice hollow structure, which forms a large number of regular and interconnected pores, creating ample channels for air circulation. At the same time, the internal open structure of the open memory foam layer itself also has good breathability. The two work together to allow air to flow quickly inside the pillow core, promptly removing the heat and moisture generated during sleep, effectively solving the problem of stuffiness and lack of breathability of traditional memory foam pillows, allowing users to maintain a cool and comfortable sleep.

[0022] The hexagonal lattice structure of the hollow frame has excellent mechanical properties, which can evenly distribute the pressure on the head and neck and provide stable and moderate support. The open-cell memory foam layer has good flexibility and conformity, which can adapt to the human body contour and combine with the rigid support of the hollow frame to achieve a perfect balance between support and conformity. It can effectively maintain the natural physiological curve of the cervical spine and avoid discomfort caused by excessive support, greatly improving the comfort of sleep.

[0023] The connecting plate enhances the load-bearing capacity of the dovetail structure, preventing damage to the dovetail strips due to long-term stress and further ensuring the structural stability of the pillow core. The rounded corners on the top two sides of the connecting plate, the two sides of the hollow frame, and the two sides of the perforated memory foam layer not only eliminate the risk of scratches from sharp edges, but also make the pillow core softer and more comfortable when in contact with the human body, improving the overall user experience. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Sectional view at point AA;

[0026] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a structural diagram of the hollow frame and connecting plate in this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the perforated memory foam layer and the dovetail strip in this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the insole support cotton and elastic band of this utility model;

[0030] Figure 7 This is a schematic diagram of the hollow frame and arc-shaped column in this utility model.

[0031] Explanation of reference numerals in the attached diagram: 1. Perforated memory foam layer; 2. Hollowed-out frame; 3. Bottom support foam; 4. Elastic band; 5. Arc groove; 6. Arc column; 7. Connecting plate; 8. Dovetail strip; 9. Dovetail groove. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] like Figures 1 to 7 As shown, this embodiment provides a 3D printed memory foam composite pillow core, including an open-cell memory foam layer 1. An internal perforated frame 2 is provided within the open-cell memory foam layer 1, and multiple arc-shaped columns 6 are fixedly connected to the bottom surface of the perforated frame 2. A bottom support cotton 3 is provided on the bottom surface of the perforated frame 2, and elastic bands 4 are fixedly connected to both sides of the bottom support cotton 3. Multiple arc-shaped grooves 5 are formed on the upper surface of the bottom support cotton 3, and the arc-shaped columns 6 are inserted into the arc-shaped grooves 5. Two dovetail grooves 9 are formed on the bottom surface of the perforated frame 2, and dovetail strips 8 are inserted into them. The dovetail strips 8 are fixedly connected to the open-cell memory foam layer 1. Through the cooperation of multiple structures, a stable connection between the perforated frame 2 and the open-cell memory foam layer 1 can be achieved. At the same time, with the synergistic effect of each component, basic support and breathability are provided for the pillow core, ensuring the basic performance of the pillow core.

[0034] The two elastic bands 4 are fixedly connected to the perforated memory foam layer 1 on the side away from the bottom support cotton 3. The elastic bands 4 can use their own elastic properties to pull the bottom support cotton 3 tightly towards the perforated memory foam layer 1, so that the arc-shaped column 6 and the arc-shaped groove 5 fit more tightly, enhance the stability of the overall structure, and at the same time play a certain buffering role when the pillow core is under force, improving the comfort of use.

[0035] The hollow frame 2 is a 3D printed support structure. The hollow frame 2 is made of two-component flexible polyurethane photosensitive resin. The 3D printing process can accurately shape the complex structure of the hollow frame 2, while the two-component flexible polyurethane photosensitive resin gives it good elasticity and strength, so that the hollow frame 2 can provide reliable support and has a certain degree of flexibility to adapt to the pressure changes of the head and neck and avoid the discomfort caused by overly rigid support.

[0036] The hollow frame 2 has a lattice hollow structure, and the lattice shape of the lattice hollow structure is hexagonal. The hexagonal lattice hollow structure has excellent mechanical stability and can evenly distribute pressure. At the same time, the large number of hollow holes provides sufficient channels for air circulation. Combined with the breathability of the open memory foam layer 1, it significantly improves the overall breathability of the pillow core and effectively reduces heat accumulation.

[0037] The hollow frame 2 has two connecting plates 7 fixedly connected inside. The connecting plates 7 are located above the dovetail strip 8. The hollow frame 2 and the connecting plates 7 can be an integral structure. The connecting plates 7 can provide effective support and protection for the dovetail strip 8, preventing the dovetail strip 8 from bending or breaking due to excessive force during long-term use, thereby ensuring the connection stability of the dovetail structure and further enhancing the bonding strength between the hollow frame 2 and the perforated memory foam layer 1.

[0038] The top two sides of the connecting plate 7 are provided with rounded chamfers. The rounded chamfer design can eliminate the sharp edges of the top of the connecting plate 7, avoid scratching the perforated memory foam layer 1 during the use or assembly of the pillow core, and also reduce potential friction injury to the human body, thereby improving the safety and comfort of the pillow core.

[0039] The hollow frame 2 has rounded chamfers on both sides, and the perforated memory foam layer 1 has rounded chamfers on both sides. The rounded chamfers on both sides make the edges of the pillow core more rounded, which can avoid pressure or friction damage to the neck, shoulders and other contact parts during use, improve the softness of contact with the human body, and make the user more comfortable when turning over and other movements.

[0040] During the assembly process, the hollow frame 2 is first embedded into the interior of the perforated memory foam layer 1. Because the structure of the hollow frame 2 fits the interior of the perforated memory foam layer 1, precise positioning can be achieved. At the same time, the dovetail strip 8 fixedly connected inside the perforated memory foam layer 1 will be inserted into the dovetail groove 9 opened on the bottom surface of the hollow frame 2. Through the interlocking action of the dovetail structure, the relative displacement between the hollow frame 2 and the perforated memory foam layer 1 is initially restricted, laying the foundation for subsequent fixation.

[0041] Next, when operating the bottom support cotton 3, pull the bottom support cotton 3 outward. The elastic bands 4 fixedly connected on both sides will be stretched due to the force. Since the end of the elastic band 4 away from the bottom support cotton 3 is fixedly connected to the perforated memory foam layer 1, a gap will be generated between the hollow frame 2 and the bottom support cotton 3 under the elastic action of the elastic band 4. This gap provides space for the position adjustment of the hollow frame 2. When the two sides of the hollow frame 2 are aligned with the two sides of the perforated memory foam layer 1, release the bottom support cotton 3. The rebound force of the elastic band 4 will drive the bottom support cotton 3 to reset, so that the arc-shaped column 6 on the bottom surface of the hollow frame 2 is precisely inserted into the arc-shaped groove 5 on the upper surface of the bottom support cotton 3. The cooperation between the arc-shaped column 6 and the arc-shaped groove 5 further restricts the relative movement of the hollow frame 2 and the perforated memory foam layer 1, realizing a stable connection between the two.

[0042] During use, the hollow frame 2, as a 3D printed support structure, is made of two-component flexible polyurethane photosensitive resin and has a hexagonal lattice hollow structure. Its material properties and structural design work together to provide support. The large number of pores formed by the hexagonal lattice structure provides channels for air circulation. Combined with the breathability of the open-cell memory foam layer 1, it significantly improves the overall breathability of the pillow core and reduces the accumulation of heat and moisture. At the same time, the rigid support of the hollow frame 2 and the flexible fit of the open-cell memory foam layer 1 can provide stable support for the head and neck, and can also adapt to the human body curve through the deformation of the open-cell memory foam layer 1, thereby improving comfort.

[0043] In addition, the connecting plate 7 inside the hollow frame 2 is located above the dovetail strip 8, which can enhance the load-bearing capacity of the dovetail structure and prevent the dovetail strip 8 from being damaged due to long-term stress. The rounded corners on the top two sides of the connecting plate 7, the two sides of the hollow frame 2, and the two sides of the perforated memory foam layer 1 can reduce friction and bumps during use, and improve the safety and comfort of use.

[0044] In summary, through the structural coordination and functional synergy of its components, this pillow core effectively improves the breathability and support of traditional memory foam pillows, achieving stable support, excellent breathability, and comfortable use.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of the invention. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A 3D-printed memory foam composite pillow core, comprising an open-cell memory foam layer (1), characterized in that: The perforated memory foam layer (1) has a hollow frame (2) that fits inside it. Multiple arc-shaped columns (6) are fixedly connected to the bottom surface of the hollow frame (2). The bottom surface of the hollow frame (2) is provided with bottom support cotton (3). Elastic bands (4) are fixedly connected to both sides of the bottom support cotton (3). Multiple arc-shaped grooves (5) are opened on the upper surface of the bottom support cotton (3). The arc-shaped columns (6) are inserted into the arc-shaped grooves (5). Dovetail strips (8) are inserted into the two dovetail grooves (9) opened on the bottom surface of the hollow frame (2). The dovetail strips (8) are fixedly connected to the perforated memory foam layer (1).

2. The 3D-printed and memory foam composite pillow core according to claim 1, characterized in that: The two elastic bands (4) are fixedly connected to the perforated memory foam layer (1) on the side away from the bottom support cotton (3).

3. The 3D-printed and memory foam composite pillow core according to claim 1, characterized in that: The hollow frame (2) is a 3D printed support structure, and the hollow frame (2) is made of two-component flexible polyurethane photosensitive resin.

4. The 3D-printed and memory foam composite pillow core according to claim 1, characterized in that: The hollow frame (2) has a lattice hollow structure, and the lattice shape of the lattice hollow structure is hexagonal.

5. A 3D-printed and memory foam composite pillow core according to claim 1, characterized in that: The hollow frame (2) has two connecting plates (7) fixedly connected inside, and the connecting plates (7) are located above the dovetail strip (8).

6. A 3D-printed and memory foam composite pillow core according to claim 5, characterized in that: The top two sides of the connecting plate (7) are provided with rounded chamfers.

7. A 3D-printed and memory foam composite pillow core according to claim 1, characterized in that: The hollow frame (2) has rounded chamfers on both sides, and the perforated memory foam layer (1) has rounded chamfers on both sides.

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