Battery cover assembly, electronic equipment and processing method of battery cover

Abstract

The invention provides a battery cover assembly, electronic equipment and a processing method of a battery cover, the battery cover assembly comprises a battery cover and a support, the battery cover comprises a rear cover and a frame, the frame is arranged along the circumferential direction of the rear cover and defines an accommodating space, and the support is installed in the accommodating space. The frame is fixedly connected with the rear cover and comprises a first section and a second section which are arranged in the Z direction, the second section is connected with the rear cover and the first section, the side edge of the support is connected with the second section, the bottom face of the support is connected with the rear cover, and the side, away from the bottom face, of the side edge is connected with a display screen of the electronic equipment. The size of the first section in the X direction is larger than that of the second section in the X direction, so that the first section protrudes towards one side of the support relative to the second section in the X direction. By increasing the size of the first section along the X direction, the problem that the size of the first section along the X direction is too small to scratch a user can be prevented, and by reducing the size of the second section along the X direction, the thickness of the frame of the battery cover can be reduced, and the light and thin development of electronic equipment is facilitated.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and in particular to a battery cover assembly, an electronic device, and a method for processing a battery cover. Background Technology

[0002] Electronic devices typically include a battery cover, a display screen, and a bracket. The bracket, housing functional components, is located between the battery cover and the display screen. The circumferential border of the battery cover surrounds the bracket and provides support. Currently, the border of battery covers is relatively thick, which hinders the development of thinner and lighter electronic devices.

[0003] Application content

[0004] This application provides a battery cover assembly, an electronic device, and a method for processing the battery cover, which can reduce the thickness of the battery cover frame and the thickness of the battery cover material, thus contributing to the development of thinner and lighter electronic devices.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] In a first aspect, this application provides a battery cover assembly, comprising: a battery cover, the battery cover including a back cover and a frame, the frame being arranged circumferentially along the back cover and enclosing an accommodating space, the frame being fixedly connected to the back cover, and the frame including a first segment and a second segment arranged along the Z direction, the second segment connecting the back cover and the first segment, the dimension of the first segment along the X direction being larger than the dimension of the second segment along the X direction; a bracket, the bracket being a frame structure for supporting functional components of an electronic device, the bracket being installed within the accommodating space of the battery cover, and the side of the bracket being connected to the second segment, the bottom surface of the bracket being connected to the back cover, the side of the bracket away from the bottom surface of the bracket being used for connection to the display screen of the electronic device; the first segment protruding relative to the second segment along the X direction toward one side of the bracket; wherein, the X direction is the distribution direction of the connected frame and the side, and the Z direction is the direction perpendicular to the back cover.

[0007] As can be seen from the above, increasing the size of the first segment along the X direction can prevent the user from being scratched due to its small size. Conversely, decreasing the size of the second segment along the X direction can reduce the thickness of the battery cover's frame and the battery cover's material, which is beneficial for the development of thinner and lighter electronic devices.

[0008] In one possible implementation, the first segment is a folded edge obtained by stamping and bending one end of the frame.

[0009] As can be seen from the above, bending the frame along the X direction increases the size of the first segment of the frame along the X direction. This allows the frame to achieve the goal of having a larger first segment along the X direction even if the size of the raw material along the X direction is small during the frame processing. Therefore, the shape of the frame is beneficial to reduce the size of the frame material along the X direction, thereby reducing the size of the second segment along the X direction, and further reducing the weight of the battery cover, thus achieving the development of a thinner and lighter battery cover.

[0010] In one possible implementation, the second segment has a dimension of less than 0.8 mm along the X direction.

[0011] In one possible implementation, the dimension of the second segment along the X direction is less than 0.6 mm.

[0012] As can be seen from the above, by adopting the border form in this application, the size of the second segment of the border can be minimized while ensuring strength requirements.

[0013] In one possible implementation, the side is bonded to the second segment using high-modulus adhesive; and / or, the side is bonded to the display screen using high-modulus adhesive.

[0014] As can be seen from the above, using high-modulus adhesive can improve the strength of the side connection. Therefore, even after the size of the second segment along the X direction is reduced, the strength requirements of the electronic device can still be guaranteed.

[0015] In one possible implementation, a high-modulus insert is provided between the side and the second segment.

[0016] As can be seen from the above, the strength of the side connection can be improved by using high-modulus inserts. Therefore, even after the size of the second segment along the X direction is reduced, the strength requirements of the electronic device can still be guaranteed.

[0017] In one possible implementation, the insert is embedded in the side.

[0018] As can be seen from the above, the insert is embedded in the side of the bracket, which reduces the connection between the insert and the bracket, simplifies the installation process, and effectively prevents the insert from shifting.

[0019] In one possible implementation, the first segment has a first chamfer on the side away from the second segment and on the side away from the bracket in the X direction.

[0020] As can be seen from the above, by setting the first chamfer in the first segment, the sharp corners on the outer surface of the frame can be reduced, thus avoiding stress concentration.

[0021] Secondly, this application provides an electronic device, including a battery cover assembly and a display screen. The battery cover assembly is any of the battery cover assemblies described above. The display screen includes a glass cover and a display module. The display module is fixedly connected to the glass cover, and a bracket is connected to the edge of the glass cover. The bracket and the display module have a gap along the X direction.

[0022] As can be seen from the above, the electronic device in this application includes the battery cover proposed in the first aspect or any of the possible embodiments. Therefore, the electronic device with this battery cover also has all the above-mentioned technical effects, which will not be repeated here. In addition, the connection between the glass cover of the display screen and the bracket can reduce the size requirements of the first segment of the frame when the glass cover is directly connected to the frame. Therefore, the direct connection between the glass cover and the bracket is beneficial to reducing the thickness of the frame and realizing the development of thinner and lighter electronic devices.

[0023] In one possible implementation, the side of the first segment closest to the second segment along the Z direction is flush with the side of the glass cover closest to the display module; and the first segment and the glass cover have a gap along the X direction.

[0024] As can be seen from the above, the gap between the first segment and the glass cover plate along the X direction can reduce the size of the first segment along the X direction, thereby increasing the size of the glass cover plate along the X direction, which is beneficial for increasing the size of the display screen.

[0025] Thirdly, this application provides a method for processing a battery cover, wherein the battery cover is any of the battery cover described above, comprising: bending the battery cover raw material using a stamping machine to obtain an L-shaped battery cover blank, one section of the battery cover blank being used to form the back cover of the battery cover, and the other section being used to form the frame of the battery cover; folding back the section of the battery cover blank used to form the frame of the battery cover using a stamping machine to obtain a semi-finished battery cover with a folded edge, wherein the folded edge is parallel and opposite to the section of the battery cover blank used to form the back cover of the battery cover; and processing the folded edge using a CNC machine tool to obtain a battery cover with the required precision and dimensions, wherein the folded edge is the first section of the frame.

[0026] As can be seen from the above, by using the above-mentioned battery cover processing method, the first segment of the frame is obtained by bending one end of the battery cover blank. By using the bending method, the dimension of the first segment of the frame along the X direction can be increased. This achieves the goal of obtaining a frame with a larger dimension along the X direction even if the dimension of the raw material along the X direction is small during the frame processing. Therefore, the shape of the frame is conducive to reducing the dimension of the frame raw material along the X direction, thereby reducing the dimension of the second segment along the X direction, and further reducing the weight of the battery cover, thus realizing the development of a thinner and lighter battery cover.

[0027] In one possible implementation, the thickness of the section of the battery cover blank used to form the battery cover frame is no more than 0.8 mm.

[0028] As can be seen from the above, the battery cover processing method in this application does not require CNC machining of the part forming the second segment of the frame in the battery cover blank. Therefore, a battery cover blank with a smaller thickness can be used.

[0029] In one possible implementation, the thickness of the section of the battery cover blank used to form the battery cover frame is no more than 0.6 mm. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the forward structure of a tablet computer provided in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the rear structure of a tablet computer provided in an embodiment of this application;

[0032] Figure 3 This is an assembly diagram of a portion of the structure of a tablet computer provided in an embodiment of this application;

[0033] Figure 4 A front view of the bracket provided in an embodiment of this application;

[0034] Figure 5 When the border provided for the embodiments of this application is of the first structure Figure 1 A cross-sectional view along the AA direction;

[0035] Figure 6 for Figure 5 Flowchart of the battery cover manufacturing process;

[0036] Figure 7 When the border provided for the embodiments of this application is of the second structure Figure 1 A cross-sectional view along the AA direction;

[0037] Figure 8 for Figure 7 Flowchart of the battery cover manufacturing process;

[0038] Figure 9 When the frame provided in the embodiments of this application has a second structure and another assembly relationship Figure 1 A cross-sectional view along the AA direction.

[0039] Among them, 1000 is a tablet computer, 100 is a display screen, 200 is a battery cover, 300 is a stand, and 400 is an insert;

[0040] 101 is the glass cover, 102 is the display module, 201 is the frame, 2011 is the first segment, 2012 is the second segment, 2013 is the first chamfer, 2014 is the second chamfer, 202 is the back cover, 301 is the first mounting position, 302 is the second mounting position, 303 is the third mounting position, 304 is the fourth mounting position, 305 is the side edge, and 3051 is the flange.

[0041] 1 is the first mold, 11 is the first upper mold, 12 is the first lower mold, 2 is the second mold, 21 is the second upper mold, 22 is the second lower mold, 3 is the third mold, 31 is the third upper mold, 32 is the third lower mold, 33 is the first inner slider, 4 is the fourth mold, 41 is the fourth upper mold, 42 is the fourth lower mold, and 43 is the second inner slider. Detailed Implementation

[0042] Currently, electronic devices are gradually becoming thinner and lighter to improve their portability and mobility, and to maximize the size of the display screen.

[0043] The battery covers of current electronic devices are typically made of thicker sheet metal to ensure the strength of the battery cover and reduce the risk of bending. In addition, the thicker sheet metal of the battery cover can prevent the edges of the battery cover from scratching users due to its thinness. However, the thicker sheet metal of the battery cover will hinder the development of thinner and lighter electronic devices.

[0044] The electronic devices may include handheld devices, in-vehicle devices, wearable devices, terminal devices, or other processing devices connected to a wireless modem. They may also include cellular phones, smartphones, personal digital assistant (PDA) computers, tablets, laptops, camcorders, video recorders, cameras, smartwatches, smart wristbands, augmented reality (AR) devices, virtual reality (VR) devices, and other devices. This application does not impose any special limitations on the specific form of the aforementioned electronic devices.

[0045] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0046] For ease of understanding, in this application Figure 1 and Figure 2 The basic structure of electronic devices is explained using a tablet computer as an example. Figure 1This is a schematic diagram of the forward structure of a tablet computer. Figure 2 This is a schematic diagram of the rear structure of a tablet computer.

[0047] Figure 1 The tablet computer 1000 includes: a display screen 100 and a battery cover 200.

[0048] It should be noted that the terms “including,” “comprising,” “having,” and their variations, used in this article all mean “including but not limited to,” unless otherwise specifically emphasized.

[0049] The display screen 100 and the battery cover 200 are bonded together to form the external structure of the tablet computer 1000.

[0050] Figure 2 The battery cover 200 includes a frame 201 and a back cover 202.

[0051] The frame 201 and the back cover 202 are integrally molded parts. The back cover 202 has a flat structure and is arranged opposite to the display screen 100. The frame 201 is arranged around the circumference of the back cover 202. For example, the frame 201 is arranged around the circumference of the back cover 202 and is perpendicular to the plane of the back cover 202. The battery cover 200 forms a box structure. The dimension of the frame 201 along the thickness direction of the tablet computer can be set according to different needs. The back cover 202 includes, but is not limited to, decorative parts and a camera module.

[0052] In some embodiments, the battery cover 200 is an alloy component. The material of the battery cover 200 includes, but is not limited to, one or more of stainless steel, titanium alloy, or aluminum alloy, to improve the strength of the battery cover 200 and facilitate the reduction of its thickness. In optional embodiments, the frame 201 has through holes for providing a charging port, headphone jack, power button, volume control buttons, microphone hole, etc. The position, number, shape, and size of the through holes on the frame 201 can be set according to different needs and are not specifically limited here.

[0053] The above describes the appearance and structure of a tablet computer. The following section combines... Figure 3 and Figure 4 The main frame structure of the tablet computer is described, including, Figure 3 This is an assembly diagram showing the partial structure of a tablet computer. Figure 4 This is the front view of bracket 300.

[0054] Figure 3 The tablet computer 1000 includes: a display screen 100, a battery cover 200, and a stand 300.

[0055] The bracket 300 is assembled within the space formed by the sealed connection between the display screen 100 and the battery cover 200. In an optional embodiment, the bracket 300 is a plastic part, which can reduce the weight of the tablet computer 1000. The bracket 300 can be injection molded to reduce processing costs. The bracket 300 has a hollow frame structure. The hollow design of the bracket 300 can reduce the amount of bracket 300 used, thereby reducing costs; moreover, it can reduce the dimension of the bracket 300 in the thickness direction, which is conducive to the development of a thinner and lighter tablet computer.

[0056] like Figure 4 As shown, the bracket 300 includes a first mounting position 301, a second mounting position 302, a third mounting position 303, and a fourth mounting position 304.

[0057] The first mounting position 301 is used to install the battery, the second mounting position 302 is used to install the motherboard, the third mounting position 303 is used to install the camera assembly, and the fourth mounting position 304 is used to install other electrical components or assemblies, including but not limited to antenna assemblies.

[0058] It should be noted that in the description of the embodiments of this application, the terms "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0059] The first mounting position 301, the second mounting position 302, the third mounting position 303, and the fourth mounting position 304 are, but are not limited to, limiting slots or limiting points. The battery, motherboard, camera assembly, and other electrical components can be fixedly connected by means of adhesive bonding, snap-fitting, or threaded connections.

[0060] After the bracket 300 is assembled with the display screen 100, the display screen 100 is used to limit the functional devices such as batteries, motherboards, camera components and other electrical components installed on the bracket 300, thereby fixing the functional devices on the bracket 300.

[0061] It should be noted that the position and shape of the limiting groove and limiting point on the bracket 300 can be set according to different needs, and all of them are within the protection range. Figure 4 The diagram only shows one possible positional relationship between the battery, motherboard, camera assembly, and other electrical components. In other embodiments, the battery, motherboard, camera assembly, and other electrical components can be positioned in other locations on the bracket 300 according to different design requirements, and are not limited to these specific locations. Figure 4 The first mounting position 301, the second mounting position 302, the third mounting position 303, and the fourth mounting position 304 are included. This can be understood as including, but not limited to, the first mounting position 301, the second mounting position 302, the third mounting position 303, and the fourth mounting position 304. Figure 4 Positional relationship.

[0062] In some embodiments, the bracket 300 has the same shape as the back cover 202, and the edge of the bracket 300 is a side 305. The battery cover 200 is fitted onto the outside of the bracket 300, and the frame 201 of the battery cover 200 is fixedly connected to the circumferential side 305 of the bracket 300. The connection method between the frame 201 and the bracket 300 includes, but is not limited to, adhesive bonding. The frame 201 provides support for the bracket 300, ensuring the stability of the shape of the bracket 300. In some embodiments, the side of the bracket 300 facing the back cover 202 is fixedly connected to the back cover 202, and the frame 201 is fixedly connected to the side 305. For example, both the side of the bracket 300 facing the back cover and the side 305 are adhesively bonded to the battery cover 200. The bracket 300 is also referred to as a bonding component.

[0063] The above content describes the main framework structure of the Tablet 1000. The following section combines... Figure 5 The connection relationship of the frame 201 of the first structure of the bracket 300, display screen 100, and battery cover 200, as well as the dimensional requirements of the first structure of the frame 201, are explained. Figure 5 This demonstrates when border 201 is the first structure. Figure 1 Sectional view along the AA direction.

[0064] Figure 5 The display screen 100 includes a cover glass (CG) 101 and a display module 102 stacked together. In some embodiments, the display module 102 includes an optically clear adhesive (OCA), a polarizer (Pol), and a display panel stacked sequentially.

[0065] The glass cover 101 is a transparent glass component, and the display panel is used to display images and videos. When the display screen 100 is a flexible display screen, the display panel is also a flexible panel. A polarizer is used to convert natural light passing through the glass cover 101 into linearly polarized light, enabling the display panel to display content based on the linearly polarized light. The optical adhesive has high adhesion, is colorless and transparent, and has high light transmittance, allowing it to connect the glass cover 101 and the polarizer without obstructing the transmission of display light emitted from the display panel to the outside of the glass cover 101.

[0066] When the display screen 100 is assembled: one side of the glass cover 101 faces the user, and the display module 102 is located between the glass cover 101 and the bracket 300.

[0067] During the assembly of the display screen 100, the bracket 300 and the battery cover 200, the bracket 300 is bonded to the frame 201 and the back cover 202 of the battery cover 200. The circumferential edge of the glass cover 101 is sealed and bonded to the side 305 of the bracket 300. In some embodiments, the glass cover 101 and the display module 102 are bonded together.

[0068] Figure 5 The frame 201 of the battery cover 200 includes: a first segment 2011 and a second segment 2012.

[0069] The first segment 2011 and the second segment 2012 are arranged along the Z-direction. The second segment 2012 connects the back cover 202 and the first segment 2011, and the first segment 2011, the second segment 2012, and the back cover 202 are integrally formed. The dimension L1 of the first segment 2011 along the X-direction is smaller than the dimension L2 of the second segment 2012 along the X-direction, so that the first segment 2011 and the second segment 2012 form a stepped surface on the side of the bracket 300 along the X-direction. In this paper, the direction of the line connecting the frame 201 and the side 305 is defined as the X-direction, and the direction of the line connecting the back cover 202 and the glass cover plate 101 is defined as the Z-direction.

[0070] The side 305 of the bracket 300 has a flange 3051 along the Z direction near the display screen 100, and the flange 3051 bends along the X direction toward the frame 201.

[0071] During the connection between the bracket 300 and the battery cover 200, the flange 3051 of the side 305 overlaps the stepped surface of the frame 201, using the battery cover 200 to provide Z-axis support to the bracket 300. The side 305 and the second section 2012 are bonded together with adhesive or glue to provide support to the bracket 300 and prevent deformation of the bracket 300; the bottom surface of the bracket 300 is bonded to the back cover 202. It should be noted that the bottom surface of the bracket 300 faces the back cover 202.

[0072] The first segment 2011 of the frame 201 has a first chamfer 2013 on the side away from the bracket 300 along the X direction, and the first chamfer 2013 is located at the end of the first segment 2011 away from the second segment 2012 along the Z direction. In some embodiments, the first chamfer 2013 is a C-shaped chamfer or an arc-shaped chamfer.

[0073] The side of the frame 201 away from the bracket 300 where it connects to the back cover 202 has a second chamfer 2014, which is either a C-shaped chamfer or an arc-shaped chamfer. The shape and size of the first chamfer 2013 and the second chamfer 2014 can be set according to different needs.

[0074] The first chamfer 2013 and the second chamfer 2014 on the battery cover 200 can reduce the stress concentration problem of the battery cover 200, reduce the probability of damage to the battery cover 200 after a collision; and can provide users with a better experience and aesthetics, and reduce the problem of right-angled edges scratching users.

[0075] In this paper, the side of the frame 201 of the battery cover 200 away from the bracket 300 along the X direction is defined as the outer surface, and the side of the frame 201 closer to the bracket 300 along the X direction is defined as the inner surface.

[0076] It should be noted that in some embodiments, the dimension L1 of the first segment 2011 along the X direction is not less than 0.75mm, so as to facilitate the processing of the first chamfer 2013 on the first segment 2011, and to avoid the problem of the first segment 2011 being too small along the X direction, which would affect the user's grip on the tablet computer 1000.

[0077] Based on the dimensional requirements of the first structure of the frame 201 of the battery cover 200, the following is combined with... Figure 6 The processing flow of the first structure of the battery cover 200 and frame 201 is described in detail, wherein, Figure 6 for Figure 5 Processing flow chart for battery cover 200. Figure 6 Figure (a) shows the battery cover blank. Figure 6 Figure (b) shows the blank in the middle of the battery cover. Figure 6 Figure (c) shows the first structure of the battery cover 200.

[0078] like Figure 6 As shown, the processing steps for the frame 201 of the battery cover 200 include: ... Figure 6 The portion of the battery cover blank extending along the Z-direction in Figure (a) is obtained by an upsetting process. Figure 6 The intermediate blank of the battery cover in Figure (b) is such that the portion of the battery cover blank extending along the Z direction is thickened from L1 to L2 along the X direction. In this paper, the intermediate blank of the battery cover is a semi-finished product obtained after processing during the battery cover manufacturing process.

[0079] It should be noted that the uneven surface of the battery cover blank obtained after extrusion will affect the aesthetic appearance of the battery cover 200 and the uniformity of the gap size between the battery cover 200 and the glass cover plate 101.

[0080] Based on this, Figure 6 The surface of the portion of the battery cover blank extending along the Z direction in Figure (b) is machined using a computer numerical control machine tool (CNC) to obtain... Figure 6The surface precision of the frame 201 shown in Figure (c) meets the requirements of the battery cover 200.

[0081] The dimensions of the finished battery cover 200 are as follows: the first segment 2011 of the frame 201 has a dimension of not less than 0.75mm along the X direction. Based on the above processing steps, both sides of the first segment 2011 along the X direction require CNC machining to ensure the flatness of the frame 201 surface. According to the precision requirements, the CNC machining allowance is not less than 0.2mm, that is, the CNC machining allowance L5 of the inner surface of the first segment 2011 along the X direction is not less than 0.2mm, and the CNC machining allowance L4 of the outer surface of the first segment 2011 along the X direction is not less than 0.2mm. The side of the first segment 2011 away from the second segment 2012 along the Z direction also requires CNC machining to ensure the flatness of the frame 201 surface, and the CNC machining allowance L3 of the surface of the first segment 2011 away from the second segment 2012 along the Z direction is not less than 0.2mm. The outer surface of the second segment 2012 along the X direction is CNC machined to ensure the flatness of the outer surface of the second segment 2012, and the CNC machining amount L4 is not less than 0.2mm.

[0082] The part of the battery cover blank extending along the Z direction has a dimension of L02 along the X direction, and L02 = L1 + L5 + L4. Based on the above dimensional requirements, L02 is not less than 1.15mm.

[0083] The portion of the battery cover blank extending along the Z direction is obtained by extruding the battery cover blank. The material of the battery cover blank is an alloy material, and the Poisson's ratio of the alloy material is approximately between 0.2 and 0.4. Therefore, the dimension L01 of the portion of the battery cover blank extending along the Z direction along the X direction is not less than 0.8 mm.

[0084] Based on the above analysis, it can be concluded that Figure 5 The shape of the frame 201 of the battery cover 200 restricts the size of the first segment 2011 to not be less than 0.75mm, further restricting the thickness of the middle blank of the battery cover to not be less than 1.15mm. After CNC processing, the size L2 of the second segment 2012 along the Z direction is not less than 0.95mm, which results in a larger size L2 of the frame 201 of the battery cover 200 along the X direction, which in turn results in a larger weight of the battery cover 200 and a larger area that needs to be CNC processed.

[0085] Based on this, this application also provides another shape for the border 201, which can reduce the dimensional requirements along the X direction during the processing of the border 201. The following is combined with... Figure 7 The connection relationship of the frame 201 of the second structure of the bracket 300, display screen 100, and battery cover 200, as well as the dimensional requirements of the second structure of the frame 201, are explained. Figure 7 This demonstrates when border 201 is the second structure. Figure 1 Sectional view along the AA direction.

[0086] like Figure 7 As shown, the frame 201 of the battery cover 200 includes: a first segment 2011 and a second segment 2012.

[0087] The first segment 2011 and the second segment 2012 are arranged along the Z direction. The second segment 2012 connects the back cover 202 and the first segment 2011. The first segment 2011, the second segment 2012 and the back cover 202 are integrally formed structures.

[0088] The first segment 2011 has a dimension L1 along the X direction that is greater than the second segment 2012's dimension L2 along the X direction, and the first segment 2011 protrudes relative to the second segment 2012 in the X direction toward the glass cover plate 101.

[0089] The side 305 of the bracket 300 is a flat plate structure extending along the Z direction. During the connection between the bracket 300 and the battery cover 200, the side 305 and the second section 2012 are bonded together with adhesive or glue. The side of the bracket 300 facing the back cover 202 is bonded together with the back cover 202.

[0090] The glass cover 101 is bonded to the Z-direction end of the bracket 300 using adhesive or glue, and there is a gap between the glass cover 101 and the first segment 2011 in the X-direction. The display module 102 is fixedly connected to the glass cover 101, and the side 305 of the bracket 300 is wrapped around the outer periphery of the display module 102, with a gap between the display module 102 and the side 305 in the X-direction. Direct connection between the glass cover 101 and the bracket 300 can reduce the size of the first segment 2011 in the X-direction; however, if the glass cover 101 is connected to the first segment 2011, the size of the first segment 2011 in the Z-direction is limited to ensure connection strength, which would require a larger raw material in the X-direction during the processing of the frame 201, which is not conducive to achieving a thinner and lighter frame 201.

[0091] It should be noted that the first segment 2011 and the glass cover plate 101 have a gap along the X direction, which can reduce the size of the first segment 2011 along the X direction and increase the size of the glass cover plate 101 along the X direction, which is beneficial to increasing the size of the display screen 100. For example, the side of the first segment 2011 near the second segment 2012 along the Z direction is flush with the side of the glass cover plate 101 near the display module 102. In some embodiments, the size of the first segment 2011 along the Z direction is 0.4 mm, and the size of the glass cover plate 101 along the Z direction is 0.5 mm.

[0092] The first segment 2011 of the frame 201 has a first chamfer 2013 on the side away from the bracket 300 along the X direction, and a second chamfer 2014 on the side away from the bracket 300 at the connection between the frame 201 and the back cover 202. In some embodiments, the first chamfer 2013 is a C-shaped chamfer or an arc-shaped chamfer, and the second chamfer 2014 is a C-shaped chamfer or an arc-shaped chamfer. The shape and size of the first chamfer 2013 and the second chamfer 2014 can be set according to different needs.

[0093] The first chamfer 2013 and the second chamfer 2014 on the battery cover 200 can reduce the stress concentration problem of the battery cover 200, reduce the probability of damage to the battery cover 200 after a collision; and can provide users with a better experience and aesthetics, and reduce the problem of right-angled edges scratching users.

[0094] Figure 7 The first segment 2011 of the frame 201 shown is larger in the X-direction than the second segment 2012. This can be understood as the first segment 2011 being bent towards the glass cover 101 relative to the second segment 2012. Because bending the frame 201 in the X-direction increases the size of the first segment 2011 in that direction, it achieves the goal of obtaining a frame 201 with a larger first segment 2011 in the X-direction even if the raw material has a smaller size in the X-direction during the frame 201 processing. Figure 7 The shape of the frame 201 in the middle is conducive to reducing the size of the frame 201 material along the X direction, thereby reducing the size of the second segment 2012 along the X direction, and further reducing the weight of the battery cover 200, realizing the development of the battery cover 200 to be thinner and lighter.

[0095] For example, when the dimension L2 of the second segment 2012 along the X direction is less than 0.6 mm, the dimension L1 of the first segment 2011 along the X direction can reach 0.75 mm.

[0096] Based on the shape of the frame 201 of the battery cover 200, the following is combined with Figure 8 The processing flow of the second structure of the frame 201 of the battery cover 200 is described in detail, wherein, Figure 8 for Figure 7 Processing flow chart for battery cover 200. Figure 8 Figure (a) shows the raw materials for the battery cover. Figure 8 Figure (b) shows the first semi-finished product of the battery cover. Figure 8 Figure (c) shows the second semi-finished product of the battery cover. Figure 8 Figure (d) shows the third semi-finished product of the battery cover. Figure 8 Figure (e) shows the fourth semi-finished product of the battery cover. Figure 8 Figure (f) shows the battery cover.

[0097] like Figure 8 As shown, the processing steps for the frame 201 of the battery cover 200 include:

[0098] S1: The battery cover material is pre-bent to obtain the first semi-finished battery cover.

[0099] Using the first mold 1 pair Figure 8 The battery cover material in Figure (a) is obtained by pre-bending it counterclockwise. Figure 8 The battery cover first semi-finished product in Figure (b). In some embodiments, the first mold 1 includes a first upper mold 11 and a first lower mold 12. The battery cover material is placed between the first upper mold 11 and the first lower mold 12, and the first mold 1 is pressed by a stamping machine to bend the battery cover material to obtain the battery cover first semi-finished product.

[0100] S2: Bend the first semi-finished battery cover at 90° to obtain the second semi-finished battery cover in an L-shape.

[0101] Use the second mold 2 pairs Figure 8 In Figure (b), the battery cover of the first semi-finished product is bent at a 90° counterclockwise position to form an L-shape. Figure 8 The second semi-finished product of the battery cover shown in Figure (c).

[0102] In some embodiments, the second mold 2 includes a second upper mold 21 and a second lower mold 22. The first semi-finished battery cover is placed between the second upper mold 21 and the second lower mold 22. The second mold 2 is pressed by a stamping machine, so that the pre-bending position of the first semi-finished battery cover is bent at 90° to obtain the second semi-finished battery cover.

[0103] In some embodiments, the second semi-finished product of the battery cover may be Figure 6 The processing methods for obtaining the second semi-finished battery cover from the battery cover blank include, but are not limited to, using S1 and S2.

[0104] S3: Fold one end of the second semi-finished battery cover back to obtain the third semi-finished battery cover with a folded edge.

[0105] The L-shaped battery cover second semi-finished product includes a planar segment for forming the back cover 202. Figure 8 (c) the horizontal section) and the side panel section used to form the frame 201 ( Figure 8 (c) Vertical section), using the third mold 3 pairs Figure 8 The side panel section of the second semi-finished battery cover in Figure (c) is pre-bent counterclockwise to obtain... Figure 8The third semi-finished product of the battery cover with a folded edge is shown in Figure (d). In some embodiments, the third mold 3 includes a third upper mold 31, a third lower mold 32, and a first inner slider 33. The vertically placed end of the second semi-finished product of the battery cover is placed between the third upper mold 31 and the third lower mold 32, and the first inner slider 33 is placed between the horizontally placed end and the vertically placed end of the second semi-finished product of the battery cover. The first inner slider 33 has an inclined surface. The third mold 3 is pressed by a stamping machine, so that one end of the second semi-finished product of the battery cover is bent and fits against the inclined surface of the first inner slider 33, thereby obtaining the third semi-finished product of the battery cover with a folded edge.

[0106] S4: Bend the edge of the third semi-finished battery cover at 90° to obtain the fourth semi-finished battery cover with the edge opposite and parallel to the flat section.

[0107] Use the fourth mold, 4 pairs Figure 8 In Figure (d), the edge of the third semi-finished battery cover is bent 90° counterclockwise, so that... Figure 8 The fourth semi-finished battery cover in Figure (e) has an edge parallel to the planar segment. In some embodiments, the fourth mold 4 includes a fourth upper mold 41, a fourth lower mold 42, and a second inner slider 43. The third semi-finished battery cover is placed between the fourth upper mold 41 and the fourth lower mold 42, and the second inner slider 43 is placed within the area enclosed by the edge of the third semi-finished battery cover. The second inner slider 43 is a rectangular block. A stamping press is used to apply pressure to the fourth mold 4, causing the edge of the third semi-finished battery cover to bend at 90°, resulting in the fourth semi-finished battery cover with an edge parallel to the planar segment.

[0108] S5: Perform CNC processing on the fourth semi-finished product of the battery cover to obtain the battery cover.

[0109] The edge of the third semi-finished battery cover is processed using CNC to ensure that the surface accuracy of the edge position meets the requirements. CNC is also used to machine a chamfer at the top corner of the outer surface of the edge, resulting in a battery cover 200 with a chamfered outer surface and meeting the accuracy requirements.

[0110] Among them, the folded edge of the third semi-finished battery cover after CNC processing forms the first segment 2011 of the frame 201 of the battery cover 200, the chamfer of the third semi-finished battery cover forms the first chamfer 2013 of the battery cover 200, and the area between the two bends of the third semi-finished battery cover forms the second segment 2012 of the frame 201 of the battery cover 200, and the surface of the second segment 2012 has not been CNC processed.

[0111] The machining range for CNC can be set according to different needs, and all of them are within the protection range.

[0112] It should be noted that the first mold 1, the second mold 2, the third mold 3 and the fourth mold 4 used in the above processing are all conventional molds in the field, and are not specifically limited here.

[0113] Based on the aforementioned processing of the frame 201 of the battery cover 200, it can be seen that... Figure 8 In the manufacturing process of the battery cover 200, the dimension L1 of the first segment 2011 of the frame 201 along the X direction can be increased by bending the end, and the size of L1 of the first segment 2011 can be changed by changing the bending position of the end. Therefore, Figure 8 During the processing of the battery cover 200, the size requirement of the frame 201 along the X direction is small, and there is no need to press the second semi-finished product of the battery cover. This ensures that the size L2 of the second segment 2012 along the X direction of the obtained frame 201 will not increase, which is beneficial to reducing the size L2 of the second segment 2012 along the X direction.

[0114] because Figure 8 The battery cover 200 does not require pressing or extrusion during processing, therefore... Figure 8 In Figure (e), the position between the two bends in the fourth semi-finished battery cover does not require CNC machining to ensure surface flatness. Therefore, the dimension L2 of the second segment 2012 of the battery cover 200 along the X direction is the thickness of the side plate segment of the second semi-finished battery cover. Depending on the strength requirements of the frame 201, in some embodiments, the dimension L2 of the second segment 2012 along the X direction is set to be less than 0.8 mm. Therefore, the thickness of the side plate segment of the second semi-finished battery cover can be less than 0.8 mm. For example, the dimension L2 of the second segment 2012 along the X direction is set to be less than 0.6 mm. For instance, if L2 is 0.6 mm, the thickness of the side plate segment of the second semi-finished battery cover can be less than 0.6 mm.

[0115] also, Figure 8 In the fourth semi-finished product of the battery cover shown in Figure (e), the area between the two bends does not require CNC processing. Therefore, the area requiring CNC processing can be reduced, and the CNC machining time can be decreased compared to... Figure 6 CNC machining time Figure 8 The CNC machining time in the battery cover manufacturing process can be effectively reduced.

[0116] From the above, it can be seen that the following is adopted: Figure 7 The structure of the frame 201 of the battery cover 200 and Figure 8 The processing method of the middle frame 201 can reduce the size of the second segment 2012 of the frame 201 along the X direction. The following is combined with... Figure 9This section explains how to ensure the strength of the tablet computer 1000 to prevent bending after the size of the second segment 2012 of the frame 201 is reduced along the X direction. Figure 9 This demonstrates another assembly relationship when frame 201 is the second type of structure. Figure 1 Sectional view along the AA direction.

[0117] like Figure 9 As shown, an insert 400 is provided between the side 305 and the second segment 2012.

[0118] Insert 400 is a high-modulus material component, which includes, but is not limited to, one or more of steel, carbon fiber, and alloys.

[0119] In some embodiments, the insert 400 is embedded in the side 305 of the bracket 300, or the side 305 has a receiving groove for accommodating the insert 400, and the insert 400 is snapped and fixed in the receiving groove. During the connection between the bracket 300 and the battery cover 200, the side 305 and the second segment 2012 are bonded together using adhesive or glue. In other alternative embodiments, the insert 400 is bonded between the side 305 and the second segment 2012.

[0120] The size and quantity of the insert 400 can be set according to different needs. Optionally, the insert 400 is a rectangular block, and multiple inserts are evenly arranged along the circumference of the bracket 300.

[0121] In some embodiments, the bracket 300 and the battery cover 200 are bonded using high-modulus adhesive or high-modulus backing adhesive. The high-modulus adhesive includes, but is not limited to, one or more of polyurethane sealant, epoxy resin adhesive, and silicone.

[0122] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A battery cover assembly, characterized in that, include: A battery cover, comprising a back cover and a frame, the frame being arranged circumferentially along the back cover and enclosing an accommodating space, the frame being fixedly connected to the back cover, and the frame comprising a first segment and a second segment arranged along the Z direction, the second segment connecting the back cover and the first segment, the dimension of the first segment along the X direction being greater than the dimension of the second segment along the X direction; The bracket is a frame structure for supporting the functional components of an electronic device. The bracket is installed in the accommodating space of the battery cover, and the side of the bracket is connected to the second segment. The bottom surface of the bracket is connected to the rear cover. The side of the bracket away from the bottom surface is used to connect to the display screen of the electronic device. The first segment protrudes to one side of the bracket along the X direction relative to the second segment. Wherein, the X direction is the distribution direction of the connected frame and the side, and the Z direction is the direction perpendicular to the back cover.

2. The battery cover assembly according to claim 1, characterized in that, The first segment is a folded edge obtained by stamping and bending one end of the frame.

3. The battery cover assembly according to claim 1 or 2, characterized in that, The second segment has a dimension of less than 0.8 mm along the X direction.

4. The battery cover assembly according to claim 3, characterized in that, The second segment has a dimension of less than 0.6 mm along the X direction.

5. The battery cover assembly according to any one of claims 1 to 4, characterized in that, The side is bonded to the second segment with high modulus adhesive. And / or, The side is bonded to the display screen using high-modulus adhesive.

6. The battery cover assembly according to any one of claims 1 to 5, characterized in that, A high-modulus insert is provided between the side and the second segment.

7. The battery cover assembly according to claim 6, characterized in that, The insert is embedded in the side.

8. The battery cover assembly according to any one of claims 1 to 7, characterized in that, The first segment has a first chamfer on the side away from the second segment and on the side away from the bracket along the X direction.

9. An electronic device, characterized in that, The device includes a battery cover assembly and a display screen, wherein the battery cover assembly is the battery cover assembly as described in any one of claims 1 to 8; The display screen includes a glass cover and a display module. The display module is fixedly connected to the glass cover. The bracket is connected to the edge of the glass cover. The bracket and the display module have a gap along the X direction.

10. The electronic device according to claim 9, characterized in that, The side of the first segment closest to the second segment along the Z direction is flush with the side of the glass cover closest to the display module; Furthermore, the first segment and the glass cover plate have a gap along the X direction.

11. A method for processing a battery cover, characterized in that, The battery cover is the battery cover as described in any one of claims 1 to 8, comprising: The battery cover material is bent using a stamping machine to obtain an L-shaped battery cover blank. One end of the battery cover blank is used to form the back cover of the battery cover, and the other end is used to form the frame of the battery cover. A stamping machine is used to fold back a section of the battery cover blank used to form the battery cover frame to obtain a semi-finished battery cover with a folded edge. The folded edge is parallel to and opposite to a section of the battery cover blank used to form the battery cover back cover. The folded edge is processed using a CNC machine tool to obtain a battery cover that meets the requirements for accuracy and size, and the folded edge is the first segment of the frame.

12. The method for processing the battery cover according to claim 11, characterized in that, The thickness of the section of the battery cover blank used to form the battery cover frame is no more than 0.8 mm.

13. The method for processing the battery cover according to claim 12, characterized in that, The thickness of the section of the battery cover blank used to form the battery cover frame is no more than 0.6 mm.

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