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CN-121986554-A - Electronic product protection shell and sheet thereof and method for manufacturing sheet

CN121986554ACN 121986554 ACN121986554 ACN 121986554ACN-121986554-A

Abstract

The invention relates to an electronic product protection shell, a sheet thereof and a method for manufacturing the sheet. The sheet comprises a sheet body (11) with the thickness not exceeding 0.9mm, wherein the sheet body (11) comprises a hot-melt matrix and reinforcing fibers contained in the hot-melt matrix, the sheet body (11) is provided with a containing cavity and a sheet-shaped magnet (21) contained in the containing cavity, the sheet body (11) is provided with a first filling part (113) entering between the sheet-shaped magnet (21) and the cavity wall of the containing cavity, a second filling part (114) and a third filling part (115) respectively covering the front surface and the back surface of the sheet-shaped magnet (21), and the three filling parts are connected with the part, located outside the containing cavity, of the sheet body (11) to form a one-piece whole, so that the sheet-shaped magnet (21) is embedded in the sheet-shaped magnet. The invention can improve the connection reliability of the sheet magnet and the sheet main body, and reduce or eliminate the influence caused by the uneven thickness of the sheet magnet.

Inventors

  • ZHENG YANGHUI
  • LIU QIUSHUN

Assignees

  • 深圳市零壹创新科技有限公司

Dates

Publication Date
20260505
Application Date
20240531
Priority Date
20230928

Claims (10)

  1. A sheet material comprises a sheet material main body (11), wherein the thickness of the sheet material main body (11) is not more than 0.9 mm, the sheet material main body (11) comprises a hot-melt base body and reinforcing fibers contained in the hot-melt base body, the sheet material main body (11) is provided with a containing cavity and a sheet-shaped magnet (21) contained in the containing cavity, the thickness of the sheet-shaped magnet (21) is smaller than that of the sheet material main body (11), the sheet material main body (11) is provided with a first filling part (113) which enters between the sheet-shaped magnet (21) and the cavity wall of the containing cavity, a second filling part (114) which covers the front surface of the sheet-shaped magnet (21) and a third filling part (115) which covers the back surface of the sheet-shaped magnet (21), and the first filling part (113) is connected with the second filling part (114) and the third filling part (115) and is connected with a part of the sheet material main body (11) which is positioned outside the containing cavity to form a whole piece, so that the sheet-shaped magnet (21) is embedded therein.
  2. The sheet according to claim 1, wherein the front and back surfaces of the sheet-like magnet (21) are completely covered with the second filling portion (114) and the third filling portion (115), respectively, so that the sheet main body (11) has a uniform thickness.
  3. The sheet according to claim 1, wherein the first filling portion (113) is formed by a hot-melt base of the sheet main body (11) entering between the sheet-like magnet (21) and a cavity wall of the housing cavity, the first filling portion (113) being connected to a portion of the sheet main body (11) located outside the housing cavity to form a one-piece whole, and the second filling portion (114) and the third filling portion (115) are formed by the hot-melt base of the sheet main body (11) spreading along a surface of the sheet-like magnet (21) at the time of or after forming the first filling portion (113).
  4. The sheet according to claim 1, wherein the receiving chamber receives a plurality of the sheet magnets (21), the plurality of the sheet magnets (21) are arranged at intervals along the plane direction of the sheet body (11), the sheet body (11) has a fourth filling portion (116) which enters a gap between two adjacent sheet magnets (21), and the fourth filling portion (116) is connected with the first filling portion (113), the second filling portion (114) and the third filling portion (115) to form a one-piece integral body.
  5. The sheet according to claim 4, wherein a plurality of the sheet-like magnets (21) are arranged in a ring shape, wherein the sheet main body (11) further comprises a central portion (15) surrounded by the plurality of the sheet-like magnets (21), and wherein the central portion (15) is connected with the first filling portion (113), the second filling portion (114), the third filling portion (115), and the fourth filling portion (116) to form a one-piece whole.
  6. The sheet according to claim 1, wherein the thickness of the sheet-like magnet (21) is 0.05-0.5 mm smaller than the thickness of the sheet body (11).
  7. The sheet material of claim 1, further comprising: An inner shell (118) covering the inner side surface of the sheet body (11) and connected with the sheet body (11) into a one-piece whole, wherein the inner shell (118) covers the position corresponding to the sheet magnet (21) to strengthen the connection of the sheet magnet (21) and the sheet body (11), the inner shell covers the inner surface of the sheet body through a coating process or a hot press molding process, the thickness of the inner shell is 0.05-0.15 mm or 10-35% of the thickness of the sheet body, and/or And a housing (119) covering an outer side surface of the sheet main body (11) and connected to the sheet main body (11) in a one-piece type, the housing (119) covering a position corresponding to the sheet magnet (21) to strengthen the connection of the sheet magnet (21) to the sheet main body (11).
  8. An electronic product protective case, wherein at least a portion of the electronic product protective case comprises the sheet of claim 1.
  9. A method of manufacturing a sheet, comprising: Step S101, soaking the reinforced fiber sheet by using a hot melt matrix to obtain a first sheet; Step S103, a containing cavity for containing the sheet-shaped magnet is arranged in the first sheet, and the containing cavity is a through hole penetrating through the thickness direction of the first sheet or a blind groove not penetrating through the thickness direction of the first sheet; step S105, assembling a sheet-shaped magnet to the accommodating cavity, wherein the thickness of the sheet-shaped magnet is smaller than that of the first sheet; And S107, integrally placing the first sheet and the sheet magnet assembled by the first sheet between two release films, and performing hot press solidification in a vacuum autoclave, so that a hot melt matrix of the first sheet flows into a space between the sheet magnet and the cavity wall of the accommodating cavity in a molten state to form a first filling part, flows to two surfaces of the sheet magnet to form a second filling part and a third filling part, and the sheet magnet is embedded in the first filling part to obtain a sheet body with the thickness of not more than 0.9 mm.
  10. The method as recited in claim 9, further comprising: and step 109, adding an outer shell and/or an inner shell to the sheet main body to form a one-piece sheet, wherein the inner shell is covered on the inner surface of the sheet main body through a coating process or a hot press forming process, and the thickness of the inner shell is 0.05-0.15 mm or 10-35% of the thickness of the sheet main body.

Description

Electronic product protection shell and sheet thereof and method for manufacturing sheet Technical Field The present invention relates to a sheet and a method for manufacturing the same, and more particularly, to a sheet having a magnetic attraction function, and a method for manufacturing the same. Background With the development of magnetic charging technology, electronic product protection shells with magnetic function are becoming popular. No matter whether the electronic product is provided with the magnetic attraction module or not, the electronic product can be magnetically attracted to be charged wirelessly through the protective shell with the magnetic attraction function as long as the electronic product is provided with the wireless charging module. For the protective case of a portable electronic product, such as a mobile phone protective case, a user desires to be thin enough to obtain a better grip, but in order to obtain a sufficient magnetic attraction force, a magnet in the mobile phone protective case must have a certain thickness, and a sheet-shaped magnet is generally used. When the sheet magnet is mounted in the groove in the mobile phone protective shell, if the thickness of the sheet magnet is not well matched with the thickness of the groove of the mobile phone protective shell, convex marks or concave pits are left on the local surface of the mobile phone protective shell, so that the appearance is affected. In particular, when a plurality of sheet magnets are used, uniformity of thickness is more difficult to be ensured, and in addition, reliability of connection between the plurality of sheet magnets and the recess of the case of the mobile phone is also lowered. Thus, a better improvement is needed. Drawings For a further disclosure of the present invention, reference is first made to the accompanying drawings, in which: fig. 1 is a schematic perspective view of a front direction of a mobile phone protective case provided by the invention; Fig. 2 is a schematic perspective view of the mobile phone case shown in fig. 1 in a back direction; fig. 3 is a schematic plan view of the front direction of the mobile phone protective case shown in fig. 1; FIG. 4 is a schematic cross-sectional view of the mobile phone case shown in FIG. 3; FIG. 5 is an enlarged view of a portion of FIG. 4; Fig. 6 is a schematic plan view of the mobile phone case of fig. 1 in a lateral direction; FIG. 7 is a schematic view of a section B-B of the case of the mobile phone of FIG. 6; FIG. 8 is an enlarged view of a portion of FIG. 7; fig. 9 is a flow chart of a method of making a sheet body provided by the present invention. Embodiments of the invention The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings. The sheet material provided by one embodiment of the invention is used for a mobile phone protective shell. It is understood that the use of the sheet provided by the present invention is not limited to a protective case for a mobile phone. Referring to fig. 1 and 2, the mobile phone case 100 includes a back plate 10 and a side plate 17 bent from an edge of the back plate 10. The back plate 10 is used to rest against the back of a mobile phone (not shown), and the side plate 17 is used to grip the side of the mobile phone, thereby mounting the mobile phone to the mobile phone protective case 100. Preferably, the back panel 10 and the side panels 17 are of one-piece unitary construction. Understandably, the back plate 10 may be provided with an avoidance hole 13 to avoid the camera of the mobile phone, and an outward flange 14 may be further provided on the outer side of the avoidance hole 13 to protect the exposed camera of the mobile phone. The side plate 17 may also be provided with an avoidance notch 19 to avoid the physical button of the mobile phone, and it is understood that the avoidance notch 19 may also be in a through hole form. The thickness of the back plate 10 is not more than 2mm a, preferably not more than 1.5 a mm a, to provide a better grip. The back plate 10 is fixedly provided with a sheet magnet 21 so as to be attracted to an external device such as a wireless charger. The thickness of the sheet-like magnet 21 is smaller than the thickness of the back plate 10. The back plate 10 may also be fixedly provided with a magnetic calibrator 23 to enhance the magnetic attraction positioning of the mobile phone protective housing 100 with external objects such as a wireless charger. In the present embodiment, the back plate 10 is fixedly provided with a plurality of sheet-like magnets 21, and the plurality of sheet-like magnets 21 are arranged at intervals in the planar direction of the back plate 10. More specifically, the plurality of sheet magnets 21 are arranged in a ring shape. The back plate 10 further comprises a central portion 15 surrounded by a plurality of sheet magnets 21. The back plate 10 is made of she