Search

CN-116528537-B - Cover, electronic device and manufacturing method thereof

CN116528537BCN 116528537 BCN116528537 BCN 116528537BCN-116528537-B

Abstract

The application relates to the field of electronic equipment, and aims to solve the problems that the design freedom degree of a cover piece of the known electronic equipment is low and the machining efficiency, cost and structural performance are not easy to be considered. The cover piece comprises a cover plate and an outer attaching layer, and the outer attaching layer is attached to one side of the cover plate. Wherein the cover plate includes a main body portion and an edge portion. The peripheral edge of the body portion has a bonding surface. The rim portion is connected to the outer peripheral edge of the body portion and is integrally joined to the body portion at a joint surface. The application has the beneficial effects that the cover piece has high design freedom degree and is convenient to design according to the performance requirements of different parts, thereby taking efficiency, cost and structural performance into consideration.

Inventors

  • ZHAO KUIBING
  • YAO WENXING
  • YUAN LEIBO

Assignees

  • 荣耀终端有限公司

Dates

Publication Date
20260508
Application Date
20220124

Claims (20)

  1. 1. A cover for assembly to an electronic device and mating connection with a center frame of the electronic device, the cover comprising a back plate portion and an outer arc portion, characterized in that: the cover piece comprises a cover plate and an outer attaching layer, and the outer attaching layer is connected to one side of the cover plate in a bonding mode; wherein the cover plate comprises a main body portion and an edge portion; the peripheral edge of the main body part is provided with a joint surface; The edge portion is connected to the outer peripheral edge of the main body portion and integrally joined to the main body portion at the joint face, the joint face being located between the outer periphery of the back plate portion and the outer periphery of the outer arc portion; the edge part is made of a second material which is a flexible material and is used for being in sealing contact with the middle frame of the electronic equipment and being pressed between the main body part and the middle frame; the edge part comprises an edge matrix which continues to extend from the peripheral edge of the main body part and a tail edge structure which is formed by extending outwards from the peripheral edge of the edge matrix along the thickness direction of the edge matrix; The surface of the middle frame facing the cover plate comprises an annular first surface and a second surface positioned on the periphery of the first surface, wherein the second surface comprises an inclined surface section, the outer peripheral surface of the edge matrix and the thickness direction of the middle frame are arranged at an included angle, and the inclined surface section obliquely intersects with the thickness direction of the middle frame and is opposite to the outer peripheral surface of the edge matrix; The cover member can be adhered to the first surface of the middle frame through a back adhesive layer on the surface facing one side of the middle frame, the outer peripheral surface of the edge matrix is sealed and attached to the inclined surface section of the middle frame, and the tail edge structure is pressed between the outer attaching layer and the middle frame.
  2. 2. A cover as claimed in claim 1, wherein: the bonding surface is in a zigzag shape with a closed circumference.
  3. 3. A cover as claimed in claim 2, wherein: the tooth groove depth of the serrated joint surface is 1-3mm.
  4. 4. A cover according to any one of claims 1-3, wherein: the outer layer covers and adheres to the main body portion and at least a portion of the edge portion such that the outer layer spans the junction of the main body portion and the edge portion.
  5. 5. A cover as claimed in claim 1, wherein: The bonding surface is perpendicular to the back plate portion.
  6. 6. A cover as claimed in claim 1, wherein: The outer layer is positioned on the inner side of the tail edge structure, and a gap is formed between the outer layer and the tail edge structure.
  7. 7. The cover of claim 6, wherein: The cross section of the gap is in a sector shape or a ring sector shape, so that the tail edge structure can be stressed to be rotationally deformed to a position close to or attached to the outer coating by taking the joint of the tail edge structure and the edge matrix as a rotation center.
  8. 8. A cap manufacturing method for manufacturing the cap according to any one of claims 1 to 7, comprising: Forming a cover plate by cutting off the outer periphery of a cover plate blank to form a main body part with a joint surface at the outer periphery, and performing injection molding to form an edge part integrally combined with the outer periphery of the main body part, wherein the edge part and the main body part are integrally combined at the joint surface; And attaching an outer attaching layer to the outer side surface of the cover member.
  9. 9. The cover manufacturing method according to claim 8, wherein: the edge portion is made of a second material, and the second material is a flexible material.
  10. 10. The cover manufacturing method according to claim 9, wherein: The second material is PC or glass fiber reinforced PC.
  11. 11. The cover manufacturing method according to claim 10, wherein: The mass percentage of the glass fiber in the glass fiber reinforced PC is 10% -30%.
  12. 12. A cover manufacturing method according to any one of claims 8 to 11, wherein: The body portion is constructed of a first material that is fiberglass board or carbon fiber board.
  13. 13. The cover manufacturing method according to claim 8, wherein: the edge portion and the main body portion each contain a resin component, and the edge portion and the main body portion are fused together by the resin components contained in both.
  14. 14. A cover manufacturing method according to any one of claims 8 to 13, wherein: The outer attaching layer is adhered to the cover plate through hot melt adhesive.
  15. 15. The cover manufacturing method according to claim 8, wherein: The outer layer is made of plastic or PU.
  16. 16. An electronic device, comprising: an electronic device main body; A cover as claimed in any one of claims 1 to 6; the cover piece is connected to the electronic equipment main body in a matching way; the electronic equipment main body comprises a middle frame, and the cover piece is connected to the middle frame in a matching way; The surface of the middle frame facing the cover plate comprises an annular first surface and a second surface positioned on the periphery of the first surface, wherein the second surface comprises an inclined surface section, the outer peripheral surface of the edge matrix and the thickness direction of the middle frame are arranged at an included angle, and the inclined surface section obliquely intersects with the thickness direction of the middle frame and is opposite to the outer peripheral surface of the edge matrix; The cover member can be adhered to the first surface of the middle frame through a back adhesive layer on the surface facing one side of the middle frame, the outer peripheral surface of the edge matrix is sealed and attached to the inclined surface section of the middle frame, and the tail edge structure is pressed between the outer attaching layer and the middle frame.
  17. 17. The electronic device of claim 16, wherein: The electronic equipment is a mobile phone or a tablet personal computer, and the cover piece and the middle frame enclose a containing space.
  18. 18. The electronic device of claim 17, wherein: the gum layer covers the main body portion and the edge portion of the portion, and the peripheral edge of the edge portion has a protruding portion that protrudes in a suspended manner beyond the gum layer.
  19. 19. The electronic device of claim 18, wherein: The surface of the middle frame, facing the cover plate, is also provided with a ring groove formed by concave downward, and the ring groove is positioned between the first surface and the second surface; the first surface and the second surface are lower near one side of the ring groove and higher near the other side, and the first surface extends to the upper opening connected with the ring groove near one side of the ring groove.
  20. 20. The electronic device of claim 19, wherein: and one side of the back adhesive layer, which is close to the annular groove, extends to the vicinity of the junction of the first surface and the annular groove.

Description

Cover, electronic device and manufacturing method thereof Technical Field The application relates to the field of electronic equipment, in particular to a cover piece, electronic equipment, a cover plate and a manufacturing method thereof. Background Covers for electronic devices such as cell phones, tablet computers, etc., are commonly used to cover electronic devices as part of the device housing. In the prior art, the integrity degree of cover parts such as a mobile phone rear cover and the like and materials is high, the design freedom degree is low, and the problems of processing efficiency, cost and structural performance are not easy to consider. Disclosure of Invention The application provides a cover piece, electronic equipment, a cover plate and a manufacturing method thereof, which are used for solving the problems that the design freedom degree of the cover piece of the known electronic equipment is low and the machining efficiency, the cost and the structural performance are not easy to be considered. In a first aspect, embodiments of the present application provide a cover member including a back plate portion and an outer arc portion, which includes a cover plate and an outer attachment layer attached to one side of the cover plate. Wherein the cover plate includes a main body portion and an edge portion. The peripheral edge of the body portion has a bonding surface. The edge portion is connected to the outer peripheral edge of the main body portion and integrally joined to the main body portion at a joint surface between the outer periphery of the back plate portion and the outer periphery of the outer arc portion. In the embodiment of the application, the cover member is composed of the cover plate and the outer attaching layer, and the cover plate is formed by combining the main body part and the edge part, so that different materials and/or different processing and forming methods are conveniently adopted to form different parts. For example, the main body part is obtained by rough machining of a material with a certain structural strength, the structural strength is ensured, the time, the labor and the cost are high during finish machining are avoided, the edge part is made of a flexible material with a certain deformability, the edge part is molded through injection molding and other processes, the shape adaptation between the edge part and other matched structures (such as a middle frame of a mobile phone) is facilitated, and the outer coating layer mainly considers the touch hand feeling of the outer surface of the outer coating layer. Therefore, the cover member in the embodiment of the application has high design freedom, and is convenient to design according to the performance requirements of different parts, so that efficiency, cost and structural performance are taken into consideration, and the cover member with required performance can be obtained by processing with high efficiency and low cost. And the joint surface is positioned between the back plate part and the outer arc part, so that the edge part only occupies the part outside the outer arc part, on one hand, the injection molding quantity of the injection molded edge part is reduced, and on the other hand, the main body part occupies a large enough range, thereby being beneficial to fully playing the structural performance of the main body part made of high-strength materials. In one possible implementation, the bonding surface is in the form of a circumferentially closed saw tooth. In this implementation mode, set up the sawtooth-shaped faying surface that circumference was sealed, on the one hand the joint area between main part and the edge portion is great, improves bonding strength, and on the other hand circumference sealed faying surface makes fashioned edge portion be circumference confined annular, can overlap in main part periphery more reliably, also improves bonding strength. In one possible implementation, the tooth slot depth of the serrated faying surface is 1-3mm. In this implementation, practice has shown that tooth slots of depth 1-3mm enable the body portion and edge portion to be joined sufficiently reliably. In one possible implementation, the body portion is stamped from a cover blank to form a peripheral portion, the bonding surface is located at a cut formed by the stamping, and the edge portion is integrally fused with the body portion at the bonding surface by injection molding. In this realization mode, the main part obtains convenient operation swift through die-cut mode, and the edge obtains through moulding plastics, and on the one hand easily shaping edge complex structure, on the other hand injection moulding's edge portion can directly realize with the fusion of main part with the heat when its is moulded plastics, easy operation is swift. In one possible implementation, the edge portion is composed of a second material, the second material being a flexible material. In the implementatio