Metal plastic composite structure and electronic equipment
By setting chamfers on the surface and edges of the metal plate and embedding a plastic plate to enhance the bonding force, the problem of insufficient bonding force between the ultra-thin metal plate and the plastic is solved, and the resistance to deformation is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHENSHI YUZHAN PRECISION TECH CO LTD
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-21
AI Technical Summary
Existing composite structures combining ultra-thin metal sheets and plastics are prone to deformation under external forces, resulting in insufficient bonding strength.
Chamfers are set on the surface and edges of the metal plate, and the plastic plate is embedded in the chamfer. The chamfers restrict the plastic plate from detaching and increase the bonding force.
It improves the deformation resistance of metal-plastic composite structures and reduces the risk of plastic sheets detaching from metal sheets.
Smart Images
Figure CN224154438U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of molds, and more particularly to a metal-plastic composite structure and electronic equipment. Background Technology
[0002] Currently available composite structures combining ultra-thin metal sheets (e.g., 0.2mm thick) with plastic often suffer from insufficient bonding strength between the metal and plastic, making them prone to deformation under external forces. Therefore, finding a solution to this problem of insufficient bonding strength between the metal sheet and plastic without increasing the metal sheet thickness has become a pressing issue for researchers in this field. Utility Model Content
[0003] In view of this, this application provides a metal-plastic composite structure and an electronic device.
[0004] This application provides a metal-plastic composite structure, comprising a metal plate and a plastic plate. The metal plate includes a first surface and a second surface disposed opposite to each other along a first direction, the first direction being the thickness direction of the metal plate. The metal plate also includes a groove penetrating the first surface and the second surface along the first direction, and the groove further penetrating an edge of the metal plate along a second direction perpendicular to the first direction. The groove includes a first contour edge. The first surface has a first chamfer connected to the first contour edge, and the second surface has a second chamfer connected to the first contour edge. The projections of the first chamfer and the second chamfer along the first direction do not overlap. The plastic plate is disposed on one side of the edge of the metal plate, and a portion of the plastic plate is embedded in the groove and located within the first chamfer and the second chamfer. The first chamfer and the second chamfer have the same inclination angle and opposite inclination directions. The first chamfer is used to restrict the plastic plate from detaching from the second surface of the metal plate, and the second chamfer is used to restrict the plastic plate from detaching from the first surface of the metal plate.
[0005] Based on the first aspect, in some possible implementations, the first contour edge includes a first arc segment, a second arc segment, and a third arc segment connected in sequence. The first arc segment and the third arc segment are arranged opposite each other along a third direction, which is the extension direction of the edge and perpendicular to the first direction. The third direction is perpendicular to both the first direction and the second direction. The extension direction of the second arc segment is different from the extension direction of the first arc segment and the extension direction of the third arc segment. The first chamfer is connected to the second arc segment, and the second chamfer is connected to both the first arc segment and the third arc segment.
[0006] Based on the first aspect, in some possible implementations, the slot further includes two second contour edges, which are arranged opposite to each other along the second direction. One second contour edge is connected to the first arc segment and the edge, and the other second contour edge is connected to the third arc segment and the edge. The first surface or the second surface is provided with a third chamfer connected to the second contour edge, and part of the plastic sheet is located within the third chamfer.
[0007] Based on the first aspect, in some possible implementations, the first arc segment and the third arc segment are symmetrically arranged, the second arc segment is connected between the first arc segment and the third arc segment, and the projection of the slot is a plum blossom buckle shape.
[0008] Based on the first aspect, in some possible implementations, the second contour edge extends along the second direction.
[0009] Based on the first aspect, in some possible implementations, the third chamfer has the same tilt angle and the same tilt direction as the first chamfer.
[0010] Based on the first aspect, in some possible implementations, the inclination angles of the first chamfer, the second chamfer, and the third chamfer are all 45 degrees.
[0011] Based on the first aspect, in some possible implementations, the distance H1 between the two second contour edges is 1 mm.
[0012] Based on the first aspect, in some possible implementations, the farthest distance H2 between the first arc segment and the third arc segment is 1.85 mm.
[0013] Based on the first aspect, in some possible implementations, the farthest distance H3 between the second arc segment and the edge is 1.75 mm.
[0014] Based on the first aspect, in some possible implementations, the thickness of the metal plate is less than or equal to 0.2 mm.
[0015] A second aspect of this application provides an electronic device comprising the aforementioned metal-plastic composite structure.
[0016] The aforementioned metal-plastic composite structure, by having a first chamfer connected to a first contour edge on the first surface of the metal plate and a second chamfer connected to the first contour edge on the second surface, and by positioning a portion of the plastic sheet within the first and second chamfers, increases the bonding force between the metal plate and the plastic sheet. Furthermore, the plastic sheet located within the first and second chamfers can constrain and restrict the relative movement of the plastic sheet and the metal plate in a first direction. Therefore, the risk of the plastic sheet detaching from the metal plate is reduced, and the deformation resistance of the metal-plastic composite structure is improved. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional schematic diagram of a metal-plastic composite structure provided in one embodiment of this application.
[0019] Figure 2 for Figure 1 The cross-sectional view of the metal-plastic composite structure shown is along the cutting line AA.
[0020] Figure 3 for Figure 1 A top view of a portion of the metal-plastic composite structure shown.
[0021] Figure 4 for Figure 1 A bottom view of a portion of the metal-plastic composite structure shown.
[0022] Figure 5 for Figure 4 The cross-sectional view of the metal-plastic composite structure shown is along the cutting line BB.
[0023] Explanation of key component symbols:
[0024] Metal-plastic composite structure 100; First direction X; Second direction Y; Third direction Z; Metal plate 101; First surface 11; Second surface 12; Edge 13; Groove 14; First contour edge 141; First arc segment 1411; Second arc segment 1412; Third arc segment 1413; Second contour edge 142; First chamfer 151; Second chamfer 152; Third chamfer 153; Plastic plate 102.
[0025] The following specific embodiments will further illustrate this application in conjunction with the above-described accompanying drawings. Detailed Implementation
[0026] The embodiments of this application are described in detail below. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0029] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0030] Please see Figure 1 and Figure 2 This application provides a metal-plastic composite structure 100 according to one embodiment. The metal-plastic composite structure 100 includes a metal plate 101 and a plastic plate 102. The metal plate 101 includes a first surface 11 and a second surface 12 disposed opposite each other along a first direction X, where the first direction X is the thickness direction of the metal plate 101. The metal plate 101 also includes a slot 14 extending through the first surface 11 and the second surface 12 along the first direction X. The slot 14 also extends through an edge 13 of the metal plate 101 along a second direction Y perpendicular to the first direction X. The slot 14 includes a first contour edge 141. The first surface 11 has a first chamfer 151 connected to the first contour edge 141, and the second surface 12 has a second chamfer 152 connected to the first contour edge 141. The projections of the first chamfer 151 and the second chamfer 152 along the first direction X do not overlap. A plastic sheet 102 is disposed on one side of the edge 13 of the metal plate 101, and a portion of the plastic sheet 102 is embedded in the groove 14 and located within the first chamfer 151 and the second chamfer 152. The first chamfer 151 and the second chamfer 152 have the same inclination angle θ but opposite inclination directions. The first chamfer 151 is used to prevent the plastic sheet 102 from detaching from the second surface 12 of the metal plate 101, and the second chamfer 152 is used to prevent the plastic sheet 102 from detaching from the first surface 11 of the metal plate 101.
[0031] In this application, the first surface 11 has a first chamfer 151 connected to the first contour edge 141, and the second surface 12 has a second chamfer 152 connected to the first contour edge 141. By setting a portion of the plastic plate 102 within the first chamfer 151 and the second chamfer 152, this design increases the bonding force between the metal plate 101 and the plastic plate 102. Furthermore, the plastic plate 102 located within the first chamfer 151 and the second chamfer 152 can constrain and restrict the relative movement between the plastic plate 102 and the metal plate 101 in the first direction X. Therefore, the risk of the plastic plate 102 detaching from the metal plate 101 can be reduced, and the deformation resistance of the metal-plastic composite structure 100 can be improved. In this embodiment, the thickness of the metal plate 101 can be less than or equal to 0.2 mm. This application does not limit the specific material of the metal plate 101, as long as it meets the actual requirements.
[0032] Please see Figure 1 , Figure 3 and Figure 4 In this embodiment, the first contour edge 141 includes a first arc segment 1411, a second arc segment 1412, and a third arc segment 1413 connected in sequence. The first arc segment 1411 and the third arc segment 1413 are arranged opposite each other along a third direction Z, which is the extension direction of the edge 13 and is perpendicular to the first direction X and the second direction Y. The extension direction of the second arc segment 1412 is different from the extension directions of the first arc segment 1411 and the third arc segment 1413. The first arc segment 1411 and the third arc segment 1413 are symmetrically arranged, and the second arc segment 1412 connects the first arc segment 1411 and the third arc segment 1413, so that the projection of the slot 14 is a plum blossom shape. The first chamfer 151 is connected to the second arc segment 1412, and the second chamfer 152 is connected to the first arc segment 1411 and the third arc segment 1413 respectively. By setting the extension direction of the second arc segment 1412 to be different from the extension direction of the first arc segment 1411 and the extension direction of the third arc segment 1413, the relative movement of the plastic plate 102 and the metal plate 101 can also be constrained and restricted in the second direction Y and the third direction Z. Therefore, the risk of the plastic plate 102 detaching from the metal plate 101 can be further reduced, and the deformation resistance of the metal-plastic composite structure 100 can be improved.
[0033] In other embodiments, the first contour edge 141 includes, but is not limited to, three sequentially connected arc segments, which can be set according to actual needs. Moreover, the projection of the slot 14 is not limited to a plum blossom shape, but can also be other different shapes.
[0034] Please see Figure 1 and Figure 3In this embodiment, the slot 14 further includes two second contour edges 142, which are arranged opposite each other along the second direction Y. One second contour edge 142 is connected to the first arc segment 1411 and the edge 13, respectively, and the other second contour edge 142 is connected to the third arc segment 1413 and the edge 13, respectively. The first surface 11 or the second surface 12 is provided with a third chamfer 153 connected to the second contour edge 142, and part of the plastic sheet 102 is also located within the third chamfer 153. In this embodiment, the first surface 11 is provided with a third chamfer 153. The third chamfer 153 has the same inclination angle θ as the first chamfer 151, and the inclination direction is the same.
[0035] In this embodiment, the first chamfer 151, the second chamfer 152 and the third chamfer 153 are obtained by etching the first contour edge 141 and the second contour edge 142 with chemical reagents. After chemical etching treatment, the bonding force between the metal plate 101 and the plastic plate 102 is greater and less prone to deformation.
[0036] Please see Figure 1 In this embodiment, the second contour edge 142 extends along the third direction Z, which is perpendicular to the first direction X and the second direction Y.
[0037] Please see Figure 3 In this embodiment, the distance H1 between the two second contour edges 142 is 1 mm.
[0038] Please see Figure 4 In this embodiment, the distance H2 between the first arc segment 1411 and the third arc segment 1413 is 1.85mm.
[0039] Please see Figure 1 and Figure 3 In this embodiment, the distance H3 between the second arc segment 1412 and the edge 13 is 1.75mm.
[0040] Please see Figure 1 and Figure 3 In this embodiment, the thickness D of the metal plate 101 is 0.2 mm. D can be any value within the scope of this application (less than or equal to 0.2 mm).
[0041] Please see Figures 3 to 5 In this embodiment, the tilt angle θ of the first chamfer 151, the second chamfer 152 and the third chamfer 153 is 45 degrees.
[0042] This application increases the contact area between the metal plate 101 and the plastic plate 102 by setting the tilt angle θ of the first chamfer 151, the second chamfer 152 and the third chamfer 153, which helps to improve the bonding force between the two.
[0043] Please see Figures 2 to 4 When the metal-plastic composite structure 100 is subjected to an external force F along the first direction X, at the first chamfer 151 on the first surface 11 of the metal plate 101, the metal plate 101 itself generates a resistance force F2 between the first direction X and the second direction Y. At the same time, at the first chamfer 151, a bonding force F1 along the first direction X is generated between the metal plate 101 and the plastic plate 102. The resultant force F' formed by F1 plus F2 is required for the metal plate 101 and the plastic plate 102 to separate when the external force F is greater than the resultant force F'. This application increases the bonding force F1 between the metal plate 101 and the plastic plate 102 by setting a first chamfer 151, a second chamfer 152 and a third chamfer 153 with a certain inclination angle θ, while also giving the metal plate 101 a resistance force F2, thereby increasing the deformation resistance of the metal-plastic composite structure 100.
[0044] This application also provides an electronic product (not shown in the figure), including the aforementioned metal-plastic composite structure 100. The electronic product may specifically be a smartphone, computer, multimedia player, e-reader, wearable device, etc.
[0045] The metal-plastic composite structure 100 of this application features a first chamfer 151 on the first surface 11 of the metal plate 101, connected to the first contour edge 141, and a second chamfer 152 on the second surface 12, also connected to the first contour edge 141. By positioning a portion of the plastic plate 102 within the first and second chamfers 151 and 152, this design increases the bonding force between the metal plate 101 and the plastic plate 102. Furthermore, the plastic plate 102 located within the first and second chamfers 151 and 152 can constrain and restrict the relative movement between the plastic plate 102 and the metal plate 101 in the first direction X. Therefore, the risk of the plastic plate 102 detaching from the metal plate 101 is reduced, and the deformation resistance of the metal-plastic composite structure 100 is improved.
[0046] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.
Claims
1. A metal-plastic composite structure, characterized by comprising: The metal-plastic composite structure includes a metal plate and a plastic plate. The metal plate includes a first surface and a second surface disposed opposite to each other along a first direction, the first direction being the thickness direction of the metal plate. The metal plate also includes a slot that penetrates the first surface and the second surface along the first direction. The slot also penetrates an edge of the metal plate along a second direction perpendicular to the first direction. The slot includes a first contour edge. The first surface has a first chamfer connected to the first contour edge, and the second surface has a second chamfer connected to the first contour edge. The projections of the first chamfer and the second chamfer along the first direction do not overlap. The plastic sheet is disposed on one side of the edge of the metal plate, and a portion of the plastic sheet is embedded in the groove and located within the first chamfer and the second chamfer; The first chamfer and the second chamfer have the same inclination angle and opposite inclination directions. The first chamfer is used to restrict the plastic sheet from detaching from the second surface of the metal plate, and the second chamfer is used to restrict the plastic sheet from detaching from the first surface of the metal plate.
2. The metal-plastic composite structure of claim 1, wherein, The first contour edge includes a first arc segment, a second arc segment, and a third arc segment connected in sequence. The first arc segment and the third arc segment are arranged opposite each other along a third direction, which is the extension direction of the edge and perpendicular to the first direction. The third direction is perpendicular to both the first direction and the second direction. The extension direction of the second arc segment is different from the extension direction of the first arc segment and the extension direction of the third arc segment. The first chamfer is connected to the second arc segment, and the second chamfer is connected to both the first arc segment and the third arc segment.
3. The metal-plastic composite structure of claim 2, wherein, The slot also includes two second contour edges, which are arranged opposite to each other along the third direction. One second contour edge is connected to the first arc segment and the edge respectively, and the other second contour edge is connected to the third arc segment and the edge respectively. The first surface or the second surface is provided with a third chamfer connected to the second contour edge, and part of the plastic sheet is located in the third chamfer.
4. The metal-plastic composite structure according to claim 2 or 3, wherein The first arc segment and the third arc segment are symmetrically arranged, and the second arc segment connects the first arc segment and the third arc segment. The projection of the slot is in the shape of a plum blossom buckle.
5. The metal-plastic composite structure of claim 3, wherein, The second contour edge extends along the second direction.
6. The metal-plastic composite structure of claim 3, wherein, The third chamfer has the same tilt angle and the same tilt direction as the first chamfer.
7. The metal-plastic composite structure of claim 6, wherein, The inclination angles of the first chamfer, the second chamfer, and the third chamfer are all 45 degrees.
8. The metal-plastic composite structure of claim 3, wherein, The metal-plastic composite structure also satisfies at least one of the following conditions: (1) The distance H1 between the two second contour edges is 1 mm; (2) The distance H2 between the first arc segment and the third arc segment is 1.85 mm; (3) The distance H3 between the second arc segment and the edge is 1.75 mm.
9. The metal-plastic composite structure according to claim 1, characterized in that, The thickness of the metal plate is less than or equal to 0.2 mm.
10. An electronic device, comprising: The electronic device includes the metal-plastic composite structure as described in any one of claims 1 to 9.