Magnetic type electronic product protection backboard

Abstract

The utility model relates to the technical field of electronic product accessories, and discloses a magnetic type electronic product protection backboard, which comprises a protection main board, and the protection main board is formed by laminating and hot-pressing a two-layer main board and at least one layer of middle-layer main board clamped between the two-layer main board; wherein the two-layer main board comprises a first main board and a second main board, and the middle-layer main board comprises a third main board and a fourth main board; the first main board and the third main board are both made of prepreg materials, and the second main board and the fourth main board are both made of long fiber materials. The protective mainboard is laminated by using the long fiber material and the semi-cured material, so that the cost is lower compared with the cost of completely using the semi-cured material, the protective mainboard can also be formed by hot pressing, and the requirement on equipment is reduced, so that the cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic product accessories, in particular to a magnetic electronic product protective back plate. Background Art

[0002] Protective back panels for electronic products are components that provide protection for electronic products. Their primary function is to provide a solid barrier to protect the backs of electronic devices such as smartphones and tablets. These panels, through their sturdy material and design, effectively resist external damage such as scratches and collisions, thereby extending the lifespan of electronic products and maintaining the device's appearance intact and aesthetically pleasing.

[0003] The magnetic protective back panel, an innovative form factor, features magnetic adsorption technology. This allows the back panel to adhere tightly to the back of the electronic device, ensuring a secure fit while also providing multiple protection features like dust, scratch, and drop resistance. The magnetic design not only simplifies installation but also enhances the user experience.

[0004] With evolving market demands and technological advancements, the materials and designs of tablet cases are becoming increasingly diverse. Traditional raw materials include plastic or metals like carbon fiber. As market demand continues to increase, the team is developing lighter designs. Traditional magnetic protective back panels are typically manufactured using only a single layer of pre-cured material. While the process is mature, the equipment costs are high and the investment is substantial. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a magnetic electronic product protective back panel to solve the problem of relatively high material cost of the magnetic back panel.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a magnetic electronic product protective back panel including a protective mainboard adapted for the electronic product, wherein the protective mainboard is formed by stacking and hot-pressing two surface layer mainboards and at least one intermediate layer mainboard sandwiched between the two surface layer mainboards to ensure the basic strength of the protective mainboard to ensure the protection of the electronic product; wherein the two surface layer mainboards include a first mainboard and a second mainboard, and the intermediate layer mainboard includes a third mainboard and a fourth mainboard, and the third mainboard is located on a side close to the first mainboard, and the fourth mainboard is located on a side close to the second mainboard; the first mainboard and the third mainboard are both semi-cured sheet materials, and the second mainboard and the fourth mainboard are both long fiber materials, so as to reduce the cost and improve the cost performance.

[0007] Furthermore, one side surface of the protective mainboard is concavely provided with a plurality of assembly grooves corresponding to the magnetic structures of the electronic products, each of the assembly grooves is provided with a magnetic part, and a cover plate is provided in the notch of each assembly groove to block the assembly groove, so that the protective mainboard after pressing and forming can be prevented from bulging outward due to the presence of the magnetic part, thereby affecting the appearance and product quality.

[0008] Furthermore, the draft angles of the outer sides of the stacked first main board, third main board, fourth main board and second main board are 4 to 6 degrees, so as to facilitate demoulding after molding.

[0009] Furthermore, a plurality of contoured openings are provided on the second mainboard at positions corresponding to the magnetic structures of the electronic product. The shape of each contoured opening is adapted to the magnetic structure of the electronic product, and each contoured opening forms the assembly groove after hot pressing to reduce the difficulty of forming.

[0010] Furthermore, the protective mainboard is provided with ribs in a grid-like structure, and the notches of the assembly slots are flush with the ribs to ensure compatibility with electronic products.

[0011] Furthermore, the cover plate is made of metal material to ensure strength.

[0012] Furthermore, each of the assembly slots is recessed with a number of independent sub-slots, and each of the magnetic parts is correspondingly arranged in each sub-slot. Each of the assembly slots is blocked by a cover plate to ensure accurate installation of the magnetic part and simplified installation of the cover plate.

[0013] Furthermore, a stepped surface is formed between the notch of each secondary slot and the assembly slot, and the cover plate is adhered to the magnetic portion and the stepped surface to ensure the stability of the cover plate and the strength of the entire protective back plate.

[0014] Furthermore, a connection hole is formed through the protective main board.

[0015] Furthermore, the edge of the protective main board is provided with an integrally formed folding structure, and the folding structure is designed to be assembled with the edge portion of a similar product.

[0016] The magnetic electronic product protective back panel of the present invention has at least the following beneficial effects: the protective main board is laminated by using long fiber materials and semi-cured materials, which is lower in cost than using all semi-cured materials, and can also be hot-pressed to form a protective main board, which reduces the requirements for equipment and thus greatly reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is an exploded view of the utility model;

[0020] Figure 3 for Figure 2 An enlarged view of portion A is shown;

[0021] Figure 4 This is an exploded view of the protective mainboard of the utility model;

[0022] Figure 5 It is a partial cross-sectional view of the present utility model.

[0023] The meanings of the reference numerals in the accompanying drawings are:

[0024] Protective main board 1; assembly groove 11; stepped surface 111; secondary groove 112; processing surface 12; rib 13; connection hole 14; surface main board 15a; intermediate main board 15b; first main board 151; second main board 152; third main board 153; fourth main board 154; contoured opening 155; avoidance perforation 16; folding structure 17; magnetic attraction portion 2; cover plate 3. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the magnetic electronic product protective backplate of the present invention includes a protective mainboard 1 adapted for use with the electronic product, a magnetic portion 2 disposed within the protective mainboard 1, and a cover 3 disposed on the protective mainboard 1 to shield the magnetic portion 2. The protective mainboard 1 is used to protect the electronic product, while the magnetic portion 2 facilitates magnetic attraction with the metal structure or magnetic structure on the electronic product to enhance the tightness of the connection between the protective backplate and the electronic product and improve the protective stability. The cover 3 facilitates the installation of the magnetic portion 2. The electronic products described in this embodiment include, but are not limited to, tablet computers, and the protective mainboard 1 is used to protect the back shell of the tablet computer.

[0027] In this embodiment, a protective mainboard 1 is provided with a plurality of recessed mounting slots 11 on a side corresponding to the electronic product, each of which is adapted to accommodate the corresponding magnetic structure of the electronic product. Each mounting slot 11 is of different size, shape, and location. The side of the protective mainboard 1 having the recessed mounting slots 11 is defined as a processing surface 12, while the other side of the protective mainboard 1 is defined as a back surface. The back surface is a flat surface. Ribs 13 are formed in a grid-like structure on the processing surface 12 of the protective mainboard 1. Each mounting slot 11 is located within the inner portion of each rib 13. Each rib 13 forms a part of the mounting slot 11, and the notch of the mounting slot 11 is aligned with the rib 13. This reduces contact between the processing surface 12 and the object during subsequent processing or use, thereby enhancing the protective effect. Since each mounting slot 11 has a different size and shape, to facilitate the production and installation of the magnetic portion 2, each mounting slot 11 is recessed with a plurality of independent sub-slots 112. Each sub-slot 112 can be a square slot or other conveniently formed shape. In order to facilitate the arrangement and installation of the cover 3, a stepped surface 111 is formed between the notch of each secondary groove 112 and the notch of the assembly groove 11, so that the total outer circumference of each secondary groove 112 in each assembly groove 11 is formed with a stepped surface 111 around the notch of the assembly groove 11. The stepped surface 111 is flush with the notch of each secondary groove 112, so that the cover 3 can rest on the notch of each secondary groove 112 and the stepped surface 111 when installed in the assembly groove 11. A connecting hole 14 is formed through the protective main board 1 to facilitate connection with other structures in subsequent processing and production. A avoidance structure is opened through the protective main board 1 corresponding to the camera part of the electronic product. The avoidance structure is an avoidance through-hole 16 to prevent the camera part from being blocked. An integrally formed folding structure 17 is protruded along the width direction on one of the long sides of the protective main board 1. The folding structure 17 is designed to be assembled with the edge portion of similar products to facilitate forming a folded edge with other protective structures during subsequent processing.

[0028] In the context of this embodiment, the protective mainboard 1 comprises two mainboard layers 15a and at least one intermediate mainboard layer 15b sandwiched between the two mainboard layers 15a, formed by stacking and hot pressing. The two mainboard layers 15a include a first mainboard 151 and a second mainboard 152, and the intermediate mainboard 15b includes a third mainboard 153 and a fourth mainboard 154. The third mainboard 153 is located closer to the first mainboard 151, and the fourth mainboard 154 is located closer to the second mainboard 152, so that the first mainboard 151, the third mainboard 153, the fourth mainboard 154, and the second mainboard 152 are arranged sequentially. In this embodiment, the first mainboard 151, the second mainboard 152, the third mainboard 153, and the fourth mainboard 154 are all rectangular sheet-like structures and are stacked in sequence. Among them, the first main board 151 and the third main board 153 are both semi-cured sheet materials, specifically plain PP-2116, fiber tow 23.6*22.8, fiber cloth thickness 0.084mm, fiber weight 103±3 (g / m2), resin content 45~49 (by wt%), density 1.8~2.0 (g / cm3), PP weight 206~224 (g / m2), titanium dioxide 3~5% (by wt%), and molding thickness 0.10mm. The second main board 152 and the fourth main board 154 are both long fiber materials, specifically sheet molding materials, type Chopped-12.5mm, specification HT301512-1.5, density 1.5g / cm 3, resin content 50%, fiber content 30%, glass beads 12%, other 8%, flame retardant grade UL94HB. The combination of long fiber material and semi-cured sheet is not only strong and durable, but also has low material cost and is easy to manufacture. In this embodiment, after the first main board 151, the third main board 153, the fourth main board 154 and the third main board 153 are stacked, and before hot pressing, one side of the first main board 151 is used as the parting line. The four outer edges of the stacked first main board 151, the third main board 153, the fourth main board 154 and the second main board 152 form a draft angle of 4 to 6 degrees from one side of the parting line to the other side along the thickness direction, preferably 5 degrees, to facilitate demolding. The draft angle is 0 degrees after hot pressing. In order to facilitate subsequent fine processing, the length and width of each of the first main board 151, the second main board 152, the third main board 153 and the fourth main board 154 are 3 mm longer than the length and width of the protective back panel of the magnetic electronic product after processing, so that each side of the first main board 151, the second main board 152, the third main board 153 and the fourth main board 154 has a 1.5 mm margin, which is convenient for cutting during subsequent mechanical fine processing. During cutting, the four corners of the protective main board 1 are chamfered. In order to facilitate the formation of the step surface 111 and the notch of the assembly groove 11 and reduce the difficulty of hot pressing, a plurality of contoured openings 155 are opened through the second main board 152 at the position corresponding to the magnetic attraction structure of the electronic product. The shape of each contoured opening 155 is adapted to the magnetic attraction structure of the electronic product, and each contoured opening 155 forms the notch portion of the assembly groove 11 after the first main board 151, the second main board 152, the third main board 153 and the fourth main board 154 are hot-pressed to form the secondary groove 112 portion. The fourth main board 154, the first main board 151 and the second main board 152 cooperate to form the secondary groove 112 portion.

[0029] In this embodiment, the number and size of the magnetic attraction parts 2 are arranged in a one-to-one correspondence with the number and size of each secondary slot 112. Each secondary slot 112 is provided with a magnetic attraction part 2. The magnetic attraction part 2 is a magnet that can be magnetically matched with metal or other magnetic attraction structures. The magnet has a square block structure or a sheet structure, and is divided into small blocks to facilitate the setting of various shapes.

[0030] In this embodiment, cover plates 3 are positioned correspondingly at the notches of the assembly slots 11 to block the magnetic portion 2 within each secondary slot 112 and the notch of the assembly slot 11, preventing direct exposure of the magnetic portion 2 and providing protection. Furthermore, the provision of cover plates 3 allows the magnetic portion 2 to be installed on the protective mainboard 1 after hot-pressing, making assembly more convenient than with existing protective plates and also preventing unevenness caused by hot-pressing of the magnetic portion 2. The cover plates 3 are made of metal, such as steel (N45SH-100RC), and are unmagnetized, to ensure protection of the magnetic portion 2. The number of cover plates 3 can be equal to the number of secondary slots 112. Preferably, one cover plate 3 is provided for each assembly slot 11. To this end, the shape of the cover plates 3 matches that of the assembly slot 11, allowing them to be installed within the assembly slot 11 when the magnetic portion 2 is installed in the secondary slot 112, thereby blocking the magnetic portion 2 within each secondary slot 112. The cover plate 3 is glued to the magnetic portion 2 and the stepped surface 111 using HHD 8190R two-component AB glue with an A:B ratio of 10:1. This glue allows for curing after hot pressing to adhere the cover plate 3. The magnetic portion 2 is also glued to the secondary groove 112. It should be noted that the depth of the mounting groove 11, that is, the depth from the stepped surface 111 to the outer rib 13 of the mounting groove 11, is greater than or equal to the thickness of the cover plate 3 to prevent the cover plate 3 from protruding beyond the rib 13.

[0031] Compared with the prior art, the magnetic electronic product protection back plate of the present invention can install the magnetic part 2 after the protective mainboard 1 is hot-pressed, thereby reducing assembly difficulty and improving quality.

Claims

1. A magnetic protective back panel for electronic products, characterized by: It includes a protective mainboard adapted for electronic products, wherein the protective mainboard is formed by laminating and hot-pressing two surface mainboards and at least one intermediate mainboard sandwiched between the two surface mainboards; The two surface main boards include a first main board and a second main board, and the middle main board includes a third main board and a fourth main board. The third main board is located on a side close to the first main board, and the fourth main board is located on a side close to the second main board. The first main board and the third main board are both semi-cured sheet materials, and the second main board and the fourth main board are both long fiber materials.

2. The magnetic electronic product protective backplate according to claim 1, wherein: A plurality of assembly slots corresponding to the magnetic structures of electronic products are recessed on one side surface of the protective mainboard. A magnetic portion is provided in each assembly slot, and a cover plate is provided in the notch of each assembly slot to block the assembly slot.

3. The magnetic electronic product protective back panel according to claim 2, wherein: The draft angle of the outer sides of the stacked first main board, the third main board, the fourth main board and the second main board is 4-6°.

4. The magnetic electronic product protective back panel according to claim 3, wherein: A plurality of contoured openings are provided on the second main board at positions corresponding to the magnetic structures of the electronic product. The shape of each contoured opening is adapted to the magnetic structures of the electronic product, and each contoured opening forms the assembly groove after the first main board, the second main board, the third main board and the fourth main board are hot-pressed.

5. The magnetic electronic product protective back panel according to claim 2, wherein: The protective main board is provided with ribs in a grid-like structure, and the notches of the assembly slots are flush with the ribs.

6. The magnetic electronic product protective back panel according to claim 2, wherein: The cover plate is made of metal material.

7. The magnetic electronic product protective back panel according to claim 2, wherein: A plurality of independent sub-grooves are recessed in each of the assembly grooves, and each of the magnetic attraction parts is correspondingly arranged in each of the sub-grooves. Each of the assembly grooves is blocked by a cover plate.

8. The magnetic electronic product protective back panel according to claim 7, wherein: A stepped surface is formed between the notch of each secondary slot and the assembly slot, and the cover plate is adhered to the magnetic attraction portion and the stepped surface.

9. The magnetic electronic product protective back panel according to claim 1, wherein: A connecting hole is formed through the protective main board.

10. The magnetic electronic product protective back panel according to claim 1, wherein: The edge of the protective main board is provided with an integrally formed folding structure, which is designed to be assembled with the edge portion of a similar product.

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