Electronic equipment

Abstract

The utility model relates to the technical field of terminals, in particular to electronic equipment. The main board of the electronic equipment is provided with the elastic arm, and the elastic arm can counteract the thrust applied to the shell of the electronic equipment by electrical components such as a camera module in the electronic equipment, so that the shell of the electronic equipment is prevented from deflecting relative to the middle frame, and the attractiveness of the appearance of the electronic equipment is improved.

Description

Technical Field

[0001] This application relates to the technical field of terminals, and particularly to an electronic device. Background Art

[0002] With the development of technology, users' requirements for the aesthetics and texture of electronic devices are increasing day by day. However, for some electronic devices, affected by the arrangement of cameras, some cameras will exert a thrust on the battery cover. Under the action of this thrust, the battery cover will rotate and shift relative to the middle frame, resulting in uneven gaps between various parts of the battery cover and the middle frame, and the appearance of the electronic device is not beautiful enough. Summary of the Utility Model

[0003] An embodiment of this application provides an electronic device.

[0004] To solve the above problems, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, an embodiment of this application discloses an electronic device, including a first housing; a second housing covering the first housing along a first direction, and an accommodation cavity is formed between the second housing and the first housing; an electrical module disposed in the accommodation cavity, a positioning member is provided on the second housing, and the positioning member is used to provide positioning for the electrical module along a second direction; a circuit board, the electrical module and the circuit board are connected by a connecting member, and the connecting member can exert a first thrust on the electrical module along the second direction; an elastic arm, a first end of the elastic arm is fixedly arranged relative to the first housing, and a second end of the elastic arm abuts against the electrical module along the second direction to provide a second thrust in a direction opposite to the first thrust for the electrical module.

[0006] According to the implementation manner of this application, the elastic arm abuts against the electrical module, and can provide a second thrust in a direction opposite to the first thrust for the electrical module, thereby preventing the electrical module from transmitting the first thrust to the second housing, and preventing the second housing from deflecting relative to the first housing, so as to ensure the aesthetics of the appearance of the electronic device.

[0007] In some embodiments of this application, the electrical module may be a camera module, the first housing may be the middle frame of the electronic device, and the second housing may be the battery cover of the electronic device. The first direction is, for example, the thickness direction of the electronic device (hereinafter the Z direction), and the second direction is, for example, the width direction of the electronic device (hereinafter, for example, the X direction).

[0008] In a possible implementation of the above first aspect, the elastic arm includes a vertical arm and a horizontal arm, the vertical arm extends along the first direction, and the horizontal arm extends along the second direction; along the first direction, a first end of the vertical arm is fixedly arranged relative to the first housing, and a second end of the vertical arm is connected to the horizontal arm; an end face of the horizontal arm abuts against the electrical module to provide a second thrust for the electrical module.

[0009] Exemplarily, in some embodiments of the present application, the vertical arm and the horizontal arm of the elastic arm may form an L shape, for example. The first end of the vertical arm is fixed to the first housing, so that the elastic arm can transfer the force applied by the electrical module to the first housing, thereby reducing or offsetting the first thrust applied by the electrical module to the second housing.

[0010] In a possible implementation of the above first aspect, the end face of the above-mentioned horizontal arm is an arc-shaped surface protruding towards the electrical module.

[0011] Exemplarily, in some embodiments of the present application, setting the end face of the horizontal arm as an arc-shaped surface can prevent the top end of the horizontal arm in the first direction from contacting the camera module, thereby increasing the effective cantilever length of the elastic arm. In other embodiments, the end face of the horizontal arm may also be an inclined surface, and the bottom end of the inclined surface in the first direction contacts the electrical module. Therefore, the effective cantilever length of the elastic arm may include the dimension of the vertical arm in the first direction and the dimension of the horizontal arm in the first direction, thereby further increasing the effective cantilever length of the elastic arm without extending the elastic arm.

[0012] In a possible implementation of the above first aspect, the above-mentioned circuit board is fixedly arranged relative to the first housing. The circuit board includes a first opening penetrating the circuit board in the first direction, and the electrical module passes through the first opening. The first end of the vertical arm is fixed to the side wall of the first opening.

[0013] In a possible implementation of the above first aspect, the dimension of the vertical arm of the above-mentioned elastic arm in the second direction is 0.55 mm to 1 mm.

[0014] In a possible implementation of the above first aspect, the second end of the above-mentioned elastic arm generates a first elastic offset in the second direction relative to the first end to provide a first thrust to the electrical module, wherein the first elastic offset is 0.55 mm to 1 mm.

[0015] In a possible implementation of the above first aspect, the above-mentioned electrical module is a camera module.

[0016] In a possible implementation of the above first aspect, the above-mentioned circuit board is the main board of the electronic device.

[0017] In a possible implementation of the above first aspect, the above-mentioned connecting member is a flexible circuit board. One end of the flexible circuit board is connected to the circuit board, and the other end is connected to the electrical module.

[0018] In some embodiments of the present application, the flexible circuit board is used to electrically connect the electrical module and the circuit board. In order to ensure that the electrical module and the circuit board can be electrically connected, the flexible circuit board is usually redundantly arranged. Furthermore, the flexible circuit board may bend between the electrical module and the circuit board, and the flexible circuit board will apply a first thrust to the camera module in order to return to a straight state.

[0019] In a possible implementation of the first aspect described above, the elastic modulus of the elastic arm is 0.8 GPa to 2 GPa.

[0020] Exemplarily, in some embodiments of the present application, the elastic offset of the elastic arm in the second direction is related to the elastic modulus of the elastic arm. Under the condition that other conditions remain unchanged, the smaller the elastic modulus, the larger the offset of the elastic arm in the second direction. Therefore, in order to meet the requirement of having a large elastic offset of the elastic arm in the second direction (see the description below for details), a material with a smaller elastic modulus can be selected to set the elastic arm. For example, the selected elastic modulus of the elastic arm is 0.8 GPa.

[0021] In a possible implementation of the first aspect described above, the density of the elastic arm is 1.4 g / cm 3 ~1.9 g / cm 3 .

[0022] In some embodiments of the present application, when the strength and elastic modulus of the elastic arm meet the requirements, a material with a smaller density can be selected to set the elastic arm, so as to reduce the weight of the electronic device.

[0023] In a possible implementation of the first aspect described above, the electronic device includes a first camera module, a second camera module, and a third camera module, wherein the first camera module and the second camera module are arranged opposite to each other in the second direction, and the third camera module is an electrical module.

[0024] In some embodiments of the present application, the electronic device includes three camera modules, wherein the first camera module and the second camera module are aligned in the second direction. Therefore, the second camera module and the first camera module can be arranged opposite to each other in the second direction, so that the thrusts applied by the first camera module and the second camera module to the second housing can cancel each other out. However, if there is only one camera module in the second direction, the camera module needs to be used as an electrical module, so as to cancel the thrust applied by the camera module to the second housing through the elastic arm. Therefore, in the case of multiple electrical modules, the thrust applied by the electrical modules to the second housing can be reduced by arranging the electrical modules.

[0025] In a possible implementation of the first aspect described above, the elastic arm is integrally formed with the circuit board.

[0026] Exemplarily, in some embodiments of the present application, the elastic arm is integrally formed with the circuit board. In this way, the elastic arm can be directly manufactured when manufacturing the circuit board. Therefore, there is no need for a splicing process between the elastic arm and the circuit board, thereby improving the strength of the elastic arm. And, since the size of the elastic arm is small, the design of integrally forming the elastic arm with the circuit board can reduce the complex operation of installing the elastic arm and the circuit board. Description of the Drawings

[0027] Figure 1A Shows a perspective view of the electronic device 100 provided by an embodiment of the present application;

[0028] Figure 1B Shows an exploded view of the electronic device 100 provided by an embodiment of the present application, and shows the assembly relationship of each component in the electronic device 100 with a dotted arrow;

[0029] Figure 1C Shows a schematic diagram of a partial structure of the electronic device 100 ( Figure 1A Cross-sectional view taken along line B-B);

[0030] Figure 2A Shows a schematic diagram of the battery cover 20 of an electronic device 100 being deflected relative to the middle frame 10;

[0031] Figure 2B Shows a schematic diagram of the battery cover 20 of an electronic device 100 not being deflected relative to the middle frame 10;

[0032] Figure 3A Shows a schematic diagram of a partial structure of the electronic device 100;

[0033] Figure 3B Shows a schematic diagram of the elastic arm 53 ( Figure 3A Schematic diagram of the structure of part N);

[0034] Figure 3C Shows a schematic diagram of the main board 50 of the electronic device 100;

[0035] Figure 3D Shows a schematic diagram of the elastic arm 53 on the main board 50;

[0036] Figure 3E According to some embodiments of the present application, shows a schematic diagram of the electronic device 100 with the battery cover 20 removed;

[0037] Figure 4 According to some embodiments of the present application, shows a schematic diagram of the elastic arm 53;

[0038] Figure 5 According to some embodiments of the present application, shows a schematic diagram of an elastic arm 53 abutted against the camera module 40A;

[0039] Figure 6 According to some embodiments of the present application, shows a schematic diagram of the force change of the elastic arm 53;

[0040] Figure 7A According to some embodiments of the present application, shows a schematic diagram of the FPC 70A applying the maximum first thrust F1 to the camera module 40A;

[0041] Figure 7B According to some embodiments of the present application, a schematic diagram showing an FPC 70A applying a minimum first thrust F1 to a camera module 40A is shown;

[0042] Figure 8A According to some embodiments of the present application, a schematic structural diagram of an arc-shaped end face 535 is shown;

[0043] Figure 8B According to some embodiments of the present application, a schematic structural diagram of an inclined end face 535 is shown. Detailed implementation manners

[0044] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings.

[0045] The present application provides an electronic device, which can solve the problem of uneven gaps between the battery cover and the middle frame, thereby improving the aesthetics of the electronic device.

[0046] Exemplarily, taking a mobile phone as an example below, the electronic device in the embodiments of the present application is introduced. In some other embodiments, the electronic device may also be an electronic device such as a tablet, a large-screen device, an augmented reality (AR) / virtual reality (VR) device, a personal digital assistant (PDA), etc., and the present application is not limited thereto.

[0047] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings.

[0048] In the drawings herein, the X direction may be the width direction of the electronic device 100, the Y direction may be the length direction of the electronic device 100, and the Z direction may be the thickness direction of the electronic device 100 (as an example of the first direction). The X direction, the Y direction, and the Z direction may be perpendicular to each other in pairs.

[0049] Figures 1A to 1C An exemplary structure of the electronic device 100 in the embodiments of the present application is shown. Among them, Figure 1A A perspective view of the electronic device 100 provided in the embodiments of the present application is shown, Figure 1B An exploded view of the electronic device 100 provided in the embodiments of the present application is shown, and the assembly relationship of each component in the electronic device 100 is shown by a dashed arrow, Figure 1C A partial structural diagram of the electronic device 100 is shown ( Figure 1A Cross-sectional view B-B in).

[0050] As Figures 1A to 1CAs shown in the figure, the electronic device 100 includes a middle frame 10 (as an example of the first housing), a battery cover 20 (also called the "rear cover", as an example of the second housing), and a screen 30. The middle frame 10 may include a panel 11 and a side wall 12 surrounding the panel 11. Along the Z direction, the screen 30 and the battery cover 20 may be located on opposite sides of the middle frame 10 and are respectively connected to the side wall 12. It can be understood that the side wall 11 of the middle frame 10, the panel 12 of the middle frame 10, and the battery cover 20 may jointly enclose a receiving cavity 60.

[0051] The receiving cavity 60 may accommodate the electronic components of the electronic device 100. For example, a camera module 40A, a main board 50, a microphone (not shown in the figure), etc. Among them, the number of camera modules 40 may be multiple, namely camera module 40A, camera module 40B, and camera module 40C respectively. Different camera modules may have different functions. For example, the camera module 40A is the main camera, which is used for taking photos and recording videos. The pixel of the main camera is usually the highest, and it can capture clearer and more detailed images. The camera module 40B may be, for example, an ultra-wide-angle camera, which is used for shooting a wider field of view. The viewing angle of the ultra-wide-angle camera is usually wider than that of the main camera, and it can capture more scenery. The camera module 40C may be, for example, a telephoto camera, which is usually used for long-distance shooting, such as shooting distant scenery or people. The telephoto camera can achieve lossless optical zoom and magnify the shooting object while maintaining the image quality.

[0052] The battery cover 20 has a positioning member 21 and a light-transmitting area 22. The camera module 40A is aligned with the light-transmitting area 22 along the Z direction. In this way, external light can enter the camera module 40A through the light-transmitting area 22. The positioning member 21 is used to position the camera module 40A to position the camera module 40A at a position aligned with the light-transmitting area 22.

[0053] Each camera module may be electrically connected to the main board 50 to interact with the main board 50 for signals. For example, each camera module may send the captured image signal to the main board 50 or receive the control instruction from the main board 50, etc.

[0054] Next, taking the camera module 40A as an example, the electrical connection method between the camera module and the main board 50 will be introduced.

[0055] Refer to Figure 1C, the camera module 40A can be electrically connected to the main board 50 through a flexible printed circuit (FPC) 70A (as an example of a connecting member). For example, the FPC 70A can be connected to the corresponding interface on the main board 50 through a board-to-board (BTB) connector 51. Exemplarily, the BTB connector 51 is relatively fixed to the main board 50. This connection method not only ensures stable communication between the camera module 40A and the main board 50, but also facilitates the assembly and maintenance of the electronic device 100.

[0056] In some embodiments, the camera module 40A, the FPC 70A, and the BTB connector 51 in the electronic device 100 are sequentially arranged on the main board 50 along the X direction. The wiring length of the FPC 70A is designed with redundancy. After the camera module 40A is connected to the BTB connector 51 through the FPC 70A, there may be a certain amount of bending of the FPC 70A. The bent FPC 70A can apply a first thrust F1 along the X direction (as an example of the second direction) to the camera module 40A. Exemplarily, in some embodiments of the present application, the magnitude of the first thrust F1 can be, for example, 3N to 10N. Since the positioning member 21 on the battery cover 20 is used to position the camera module 40A, therefore, when the camera module 40A is subjected to the first thrust F1 along the X direction, at least a part of the thrust F1' will be applied to the positioning member 21. Since the positioning member 21 is fixedly arranged relative to the battery cover 20, therefore, the thrust F1' will be further transmitted to the battery cover 20. The battery cover 20 will deflect under the action of the thrust F1', resulting in an uneven gap between the middle frame 10 and the battery cover 20.

[0057] For example, Figure 2A and Figure 2B shows an exemplary structure of the battery cover 20 and the middle frame 10 being closed. Among them, Figure 2A shows a schematic diagram of the battery cover 20 of an electronic device 100 being deflected relative to the middle frame 10, Figure 2B shows a schematic diagram of the battery cover 20 of an electronic device 100 not being deflected relative to the middle frame 10.

[0058] Referring to Figure 2A, under the action of the thrust F1', the battery cover 20 deflects counterclockwise relative to the middle frame 10. As a result, the width of the gap between the middle frame 10 and the battery cover 20 in the upper left region (such as part A1) of the electronic device 100 is reduced to d2, and the width of the lower part of the left gap (such as part A2) is increased to d1. Similarly, the width of the upper part of the right gap (such as part A3) of the electronic device 100 is increased to d3, and the width of the lower part of the right gap (such as part A4) is reduced to d4. It can be understood that d2 < d1 and d4 < d3. Therefore, the width of the gap between the middle frame 10 and the battery cover 20 of the electronic device 100 is not uniform enough, resulting in an unattractive appearance of the electronic device 100.

[0059] Referring to Figure 2B , when the electronic device 100 is not subjected to the thrust F1', the width of the gap between the middle frame 10 and the battery cover 20 in the upper left region (such as part A1) of the electronic device 100 is d5, and the width of the lower part of the left gap (such as part A2) is d5. Similarly, the width of the upper part of the right gap (such as part A3) of the electronic device 100 is d5, and the width of the lower part of the right gap (such as part A4) is also d5. That is to say, the width of the gap between the battery cover 20 and the middle frame 10 is uniform, thus making the appearance of the electronic device 100 attractive.

[0060] For this reason, the embodiments of the present application provide an electronic device including an elastic arm. The elastic arm can push against the camera module to prevent the camera module from applying a corresponding thrust to the battery cover after receiving the first thrust. The deflection of the battery cover relative to the middle frame is reduced, so that the gap between the battery cover and the middle frame is more uniform, improving the aesthetics of the appearance of the electronic device.

[0061] For example, Figures 3A to 3E shows an exemplary structure of the electronic device 100 in the embodiments of the present application. Among them, Figure 3A shows a schematic diagram of a partial structure of the electronic device 100, Figure 3B shows a schematic diagram of the elastic arm 53 ( Figure 3A schematic diagram of the structure of part N in Figure 3C shows a schematic diagram of the main board 50 of the electronic device 100, Figure 3D shows a schematic diagram of the elastic arm 53 on the main board 50. Figure 3E According to some embodiments of the present application, a schematic diagram of the structure of the electronic device 100 with the battery cover 20 removed is shown.

[0062] Refer to Figures 3A to 3D, the electronic device 100 includes an elastic arm 53. One end of the elastic arm 53 is fixedly connected to the main board 50, and the other end of the elastic arm 53 abuts against the camera module 40A in the X direction. When the camera module 40A receives the first thrust F1 applied by the FPC 70A, the camera module 40A applies a thrust F4 to the elastic arm 53. After the elastic arm 53 receives the thrust F4 applied by the camera module 40A, it undergoes elastic deformation, so that a second thrust F4' opposite to the direction of the first thrust F1 can be provided to the camera module 40A. The second thrust F4' can offset at least part of the first thrust F1, thereby preventing the entire first thrust F1 received by the camera module 40A from being transmitted to the battery cover 20 through the positioning member 21, thereby reducing or offsetting the thrust received by the battery cover 20, preventing the battery cover 20 from deflecting relative to the middle frame, and ensuring that the gap between the battery cover 20 and the middle frame 10 is more uniform, improving the aesthetics of the electronic device 100.

[0063] It can be understood that the second thrust F4' can at least partially offset the first thrust F1. Continuing to refer to Figure 3A , in some embodiments of the present application, the second thrust F4' can completely offset the first thrust F1. In this embodiment, the camera module 40A may not be in contact with the positioning member 21, or the camera module 40A may just be in contact with the positioning member 21, but there is no acting force between them. In other embodiments, the second thrust F4' can offset part of the first thrust F1. In this embodiment, the camera module 40A will be in contact with the positioning member 21, and the positioning member 21 provides an acting force F5 to the camera module. The second thrust F4' and the acting force F5 can jointly offset the first thrust F1.

[0064] In some embodiments, when the number of camera modules is multiple, by reasonably arranging the camera modules, the thrusts received by some camera modules can be offset from each other. For example, referring to Figure 3E , the camera module 40B of the electronic device 100 is connected to the main board 50 through the FPC 70B, and the camera module 40C is connected to the main board 50 through the FPC 70C. And along the X direction, the camera module 40B is aligned with the camera module 40C. In this case, the FPC 70B and the FPC 70C can be arranged opposite to each other in the X direction, so that the thrust F2 acting on the camera module 40B by the FPC 70B and the thrust F3 acting on the camera module 40C by the FPC 70C can offset at least part of each other, so as to prevent the camera modules 40B and 40C from causing the deflection of the battery cover.

[0065] Next, the specific structure of the elastic arm in the embodiments of the present application will be introduced.

[0066] For example, Figure 4 According to some embodiments of the present application, a schematic structural diagram of the elastic arm 53 is shown.

[0067] Reference Figure 4 。In some embodiments of the present application, the elastic arm 53 includes a vertical arm 531 and a horizontal arm 532. Among them, the vertical arm 531 is a rectangular block extending in the Z direction. Exemplarily, in some embodiments of the present application, the dimension of the vertical arm 531 in the Z direction is L1, the dimension in the Z direction is b, and the dimension in the Y direction is W. The horizontal arm 532 is a rectangular block extending in the X direction. In the Z direction, the first end 533 of the vertical arm 531 is fixedly connected to the main board 50. The second end 534 of the vertical arm 531 is connected to the horizontal arm 532, and the end face 535 of the horizontal arm 532 abuts against the camera module 40A ( Figure 4 The camera module 40A is not shown, and the abutment between the horizontal arm 532 and the camera module 40A can be seen in Figure 3B ), so as to provide a second thrust F4' to the camera module 40A. In this embodiment, the elastic arm 53 can be L-shaped. The L-shaped elastic arm 53 is disposed in the positive direction, that is, the horizontal arm 532 of the elastic arm 53 is located at the lower end of the vertical arm 531. In other embodiments, the L-shaped elastic arm 53 can also be inverted. That is, the horizontal arm 532 is located at the upper end of the vertical arm 531.

[0068] In the following embodiments, the L-shaped elastic arm 53 disposed in the positive direction is taken as an example to introduce the specific structure of the elastic arm 53. The embodiments of the present application do not limit the setting manner of the elastic arm 53. For example, in some embodiments, the elastic arm 53 can be a rectangular block, or a cylindrical shape, etc.

[0069] Next, the process of deformation after the elastic arm abuts against the camera module is introduced.

[0070] For example, Figure 5 According to some embodiments of the present application, a schematic diagram of the elastic arm 53 abutting against the camera module 40A is shown.

[0071] Reference Figure 5 And in combination with Figure 4 , in some embodiments of the present application, the end face 535 (the surface at one end of the length direction of the horizontal arm 532) of the horizontal arm 532 is a plane, and the end face 535 can be perpendicular to the length direction of the horizontal arm 532. Refer to Figure 4 , in the free state of the elastic arm 53 (that is, when the horizontal arm 532 is not subjected to the thrust from the camera module 40A), the vertical arm 531 of the elastic arm 53 can be parallel to the Z direction, and the end face 535 of the horizontal arm 532 can be parallel to the X-Z plane.

[0072] Refer to Figure 5, after the end face 535 of the cross arm 532 abuts against the camera module 40A, the camera module 40A applies a thrust F4 to the elastic arm 53 in the X direction. The elastic arm 53 deflects in the XZ plane direction. That is, the vertical arm 531 forms an angle θ1 with the Z direction, and correspondingly, the end face 535 of the cross arm 532 forms an angle θ1 with the X-Z plane. It can be understood that after the elastic arm 53 deflects, the part of the end face 535 of the cross arm 532 that abuts against the camera module 40A is the top end of the end face 535 along the Z direction (refer to Figure 5 the H point in

[0073] ). Therefore, the effective cantilever length L0 of the elastic arm 53 (the length of the part of the elastic arm 53 that deforms under force to generate the second thrust F4') is the length L1 of the vertical arm 531 of the elastic arm 53.

[0074] For example, Figure 6 According to some embodiments of the present application, a schematic diagram showing the change in force on the elastic arm 53 is shown. For ease of understanding, Figure 6 the elastic arm is simplified to a rectangular structure, and the length of the rectangular structure is the effective cantilever length L0 of the elastic arm 53.

[0075] Referring to Figure 6 , the dashed line in the figure shows the initial state of the elastic arm 53, and the solid line shows the state of the elastic arm 53 after generating an elastic displacement. Exemplarily, the initial state is, for example, the state where the elastic arm 53 is not subjected to an external force. In this state, the extending direction of the elastic arm 53 is parallel to the Z direction. When the elastic arm 53 is subjected to a thrust F4 in the X direction (as an example of the second direction), the elastic arm 53 deflects in the XZ plane, so that the angle between the extending direction of the elastic arm 53 and the Z direction is θ. In this state, the elastic offset ω of the M part of the elastic arm 53 in the X direction is (as an example of the first elastic offset). The elastic arm 53 can generate a second thrust F4' on the camera module 40A in the opposite direction of the thrust F4 in order to return to the initial state (return to the state of the elastic arm 53 in the dashed line part). It can be understood that the second thrust F4' and the thrust F4 are equal in magnitude and opposite in direction.

[0076] The magnitude of the elastic offset ω generated by the elastic arm 53 in the X direction is related to the thrust F4, the elastic modulus of the elastic arm 53, and the effective cantilever length L0 of the elastic arm 53. That is to say, the magnitude of the elastic offset ω generated by the elastic arm 53 in the X direction is related to the effective cantilever length of the elastic arm 53 and the sectional moment of inertia of the vertical arm 532. For example, referring to formula (1):

[0077]

[0078] Among them, F4 is the thrust applied by the camera module 40A to the elastic arm 53, ω is the elastic offset of point M of the elastic arm 53 in the X direction, L0 is the effective cantilever length of the elastic arm 53, E is the elastic modulus of the vertical arm 531, and I is the rectangular cross-section moment of inertia of the vertical arm 531 (taking the vertical arm 531 as a rectangular block as an example). The calculation formula for the rectangular cross-section moment of inertia I can refer to formula (2):

[0079]

[0080] Among them, I is the rectangular cross-section moment of inertia of the vertical arm 531, b is the dimension of the vertical arm 531 in the X direction, and W is the dimension of the vertical arm 531 in the Y direction.

[0081] It can be understood that when the material of the vertical arm 531 (i.e., the elastic modulus E) is determined, the magnitude of the elastic offset ω generated by the elastic arm 53 in the X direction is related to the dimensions of the vertical arm 531 in each direction (when the effective cantilever length L0 of the elastic arm 53 is the length L1 of the vertical arm 531) and the thrust F4 applied by the camera module 40A to the elastic arm 53.

[0082] It can be understood that after the elastic arm 53 is subjected to the thrust F4, it deflects in the X direction, that is, the vertical arm 531 of the elastic arm 53 deflects in the XZ plane. If the dimension b of the vertical arm 531 in the X direction is small, the vertical arm 531 may break due to excessive force. Therefore, in order to ensure the strength of the elastic arm 53, the dimension b of the vertical arm 531 in the X direction cannot be too small. Therefore, when setting the elastic arm 53, the size of b needs to be considered.

[0083] Formula (3) can be obtained through formula (1) and formula (2):

[0084]

[0085] Exemplarily, in order to ensure the strength of the elastic arm 53 in the X direction, the value of b can be increased as much as possible under the condition of meeting other conditions. For example, in some scenarios, the magnitude of the elastic offset ω needs to meet certain requirements. Therefore, the magnitude of the elastic offset ω is predetermined. For example, the value of the elastic offset ω can be in the range of 0.55 mm to 1 mm. Similarly, in some scenarios, the thrust F4 applied by the camera module 40A to the elastic arm 53 is also predetermined. In addition, in order to reduce the dimension of the electronic device 100 in the Z direction, that is, to reduce the thickness of the electronic and device 100, the dimension of the elastic arm 53 in the Z direction cannot be too large. In this case, the dimension of the elastic arm 53 in the Z direction can be determined first. Therefore, the length L1 of the vertical arm 531 (as the effective cantilever length L0 of the elastic arm 53) can also be predetermined.

[0086] Referring to Equation (III), when E, F4, L0, and ω are predetermined, the value of b is negatively correlated with the dimension W of the vertical arm 531 in the Y direction and the elastic modulus E of the vertical arm 531. That is to say, if W and / or E increase, b will decrease. Conversely, if b increases, W and / or E will decrease.

[0087] However, to ensure the strength of the elastic arm 53, the dimensions of b and W should not be too small. In this case, the dimension of b can be increased by reducing the elastic modulus E of the vertical arm 531. Therefore, when the strength requirements of the material symbol of the vertical arm 531 are met, a material with a low elastic modulus can be selected as the material of the vertical arm 531. It can be understood that the vertical arm 531 and the horizontal arm 532 in the elastic arm 53 can be an integrally formed structure, so the material of the vertical arm 531 can also be referred to as the material of the elastic arm 53. For example, in some embodiments of the present application, the elastic modulus E of the elastic arm 53 is 0.8 GPa to 2 GPa.

[0088] In some embodiments of the present application, the elastic arm 53 can be a structure integrally formed with the main board 50. Therefore, the elastic arm 53 and the main board 50 are made of the same material. When selecting the material of the elastic arm 53, in addition to considering the strength and elastic modulus of the material, the density of the material can also be considered. For example, when the strength and elastic modulus of the material meet the requirements, a material with a lower density can be selected to set the elastic arm 53, so as to reduce the mass of the main board 50 and the elastic arm 53, and further reduce the weight of the electronic device 100. For example, in some embodiments of the present application, the density of the elastic arm 53 is 1.4 g / cm 3 ~1.9 g / cm 3 .

[0089] Next, the scenario of determining the magnitude of the elastic offset ω and determining the thrust F4 will be introduced.

[0090] For example, Figure 7A and Figure 7B show a schematic diagram of the FPC 70A applying a first thrust F1 to the camera module 40A in an embodiment of the present application. Among them, Figure 7A According to some embodiments of the present application, a schematic diagram of the FPC 70A applying the maximum first thrust F1 to the camera module 40A is shown. Figure 7B According to some embodiments of the present application, a schematic diagram of the FPC 70A applying the minimum first thrust F1 to the camera module 40A is shown.

[0091] Exemplarily, in some embodiments of the present application, when the FPC 70A is in a stressed and bent state, in order to return to its initial state (for example, the initial state is the state without external force. In the embodiments of the present application, the initial state can be the state where the FPC 70A is in a straight state), it will exert an external force. As mentioned above, in order to ensure that the FPC 70A can electrically connect the camera module 40A to the BTB connector 51, the cable length of the FPC 70A is designed with redundancy. Thus, there will be a certain bend between the camera module 40A and the BTB connector 51 for the FPC 70A.

[0092] Reference Figure 7A , when the FPC 70A is in a state about to straighten, the distance between the camera module 40A and the BTB connector 51 is the largest. For example, the maximum distance is S1. The first thrust F1 exerted by the FPC 70A on the camera module 40A is F1 = Fmax, which is the maximum thrust. It can be understood that after the camera module 40A abuts against the elastic arm 53, at least a part of the first thrust F1 can be transmitted to the elastic arm 53. That is to say, the thrust F4 that the camera module 40A can exert on the elastic arm 53 can reach the magnitude of Fmax. Therefore, the magnitude of the thrust F4 can be set to Fmax in advance to meet the requirement that the elastic arm 53 can offset the first thrust F1.

[0093] Refer to Figure 7B When the FPC 70A is in a bent state (for example, when it is bent 180 degrees), the first thrust F1 exerted by the FPC 70A on the camera module 40A is F1 = Fmin, which is the minimum thrust. The distance between the camera module 40A and the BTB connector 51 is the smallest, which is S2. It can be understood that due to the different bending degrees of the FPC 70A, the distance between the camera module 40A and the BTB connector 51 is also different. That is to say, the distance between the camera module 40A and the BTB connector 51 in the X direction can be between S1 and S2 (including S1 and S2), and the maximum change amount of the position of the camera module 40A in the X direction is S = S1 - S2. Therefore, in order to ensure that the elastic arm 53 can keep abutting against the camera module 40A at any position where the distance between the camera module 40A and the BTB connector 51 is between S1 and S2, so as to exert a second thrust F4' on the camera module 40A. The magnitude of the elastic offset ω of the elastic arm 53 can be set to S to prevent the camera module 40A from first abutting against the positioning member 21 and exerting a thrust on the positioning member 21, and further prevent the battery cover 20 from being subjected to the thrust exerted by the camera module 40A. Exemplarily, in some embodiments of the present application, the magnitude of the elastic offset ω is 0.55 mm to 1 mm.

[0094] In some cases, in order to satisfy that the elastic arm 53 can have a large elastic offset ω in the X direction and at the same time increase the dimension b of the vertical arm 531 of the elastic arm 53 in the X direction, when the dimension of the elastic arm 53 in the Z direction is fixed, the effective cantilever length of the elastic arm 53 can be increased by changing the end face 535 of the cross arm 532.

[0095] For example, Figure 8A and Figure 8B show schematic structural views of the elastic arm 53 with different end faces 535 in the embodiments of the present application. Among them, Figure 8A According to some embodiments of the present application, a schematic structural view of an arc-shaped end face 535 is shown. Figure 8B According to some embodiments of the present application, a schematic structural view of an inclined end face 535 is shown.

[0096] Referring to Figure 8A , in some embodiments of the present application, the projection of the end face 535 of the cross arm 532 of the elastic arm 53 on the XZ plane is an arc convex in the X direction. For example, in the embodiments of the present application, the projection of the end portion 535 on the XZ plane is semi-circular. In this way, the portion of the end face 535 in contact with the camera module 40A is not at the top of the end face 535 in the Z direction, and the effective cantilever length of the elastic arm 53 is L2. It can be understood that since the portion of the end face 535 in contact with the camera module 40A is not at the top of the end face 535 in the Z direction, the dimension of L2 not only includes the dimension L1 of the vertical arm 531 in the Z direction, but also includes a partial dimension of the cross arm 532 in the Z direction. That is to say, the dimension of the effective cantilever length L2 of the elastic arm 53 is greater than the length L1 of the vertical arm 531. That is, in this case, L0 in formula (three) becomes L2, and L2 is greater than L0. Thus, the dimension of b can be increased in the process of designing the elastic arm 53. For example, in some embodiments of the present application, the dimension of b is 0.55 mm to 1 mm.

[0097] It can be understood that in other embodiments, the end face 535 of the cross arm 532 can also be designed into other shapes to increase the deformation dimension of the elastic arm 53 when the dimension of the elastic arm 53 in the Z direction is fixed.

[0098] For example, referring to Figure 8B , the end face 535 of the cross arm 532 is an inclined plane, and the bottom end in the Z direction abuts against the camera module 40A. In this state, the effective cantilever length of the elastic arm 53 is L3. It can be understood that L3 includes the length L1 of the vertical arm 531 plus the dimension of the cross arm 532 in the Z direction. Thus, the dimension of the effective cantilever length of the elastic arm 53 is further increased to increase the dimension of b and improve the strength of the elastic arm 53.

[0099] Exemplarily, in some other embodiments, the end face 535 of the cross arm 532 may also be set to other shapes, such as trapezoidal, triangular, arc-shaped or other irregular shapes, etc. When the top of the end face 535 in the Z direction does not contact the camera module 40A, the deformation size of the elastic arm 53 can be increased. Furthermore, when designing the elastic arm 53, the size b of the elastic arm 53 in the X direction can be increased to improve the strength of the elastic arm 53.

[0100] Exemplarily, in some embodiments of the present application, taking the camera module as the electrical module of the electronic device as an example, the scenario where the camera module applies the thrust received from the FPC to the battery cover, resulting in the offset of the battery cover relative to the middle frame, is introduced. In some other embodiments, it may also be that other electrical modules in the electronic device apply a thrust to the battery cover, causing the battery cover to offset relative to the middle frame. For example, when the speaker in the electronic device (as another example of the electrical module) is aligned with the sound outlet channel of the electronic device, after the speaker receives the force from the flexible connecting member, it can apply the force to the battery cover of the electronic device, resulting in the offset of the battery cover relative to the middle frame. Or the microphone (as another example of the electrical module) and other sound receiving components of the electronic device need to be aligned with the sound receiving channel of the electronic device. After the microphone receives the thrust from the connecting member, it will also apply a corresponding force to the battery cover. Therefore, the embodiments of the present application do not limit the electrical components that apply force to the battery cover of the electronic device and the specific material of the connecting member. And, in some embodiments, the first thrust may also be a thrust in other directions, and the embodiments of the present application do not limit the direction of the first thrust.

[0101] In summary, the embodiments of the present application provide an electronic device. By providing an elastic arm on the circuit board fixedly connected to the first housing of the electronic device to abut against the electrical module, at least part of the thrust applied by the electrical module to the battery cover of the electronic device can be offset, preventing the battery cover from deflecting relative to the middle frame, ensuring that the gap is uniform after the battery cover and the middle frame of the electronic device are closed, and improving the aesthetics of the electronic device.

[0102] In the above description of this embodiment, unless otherwise specified, " / " means "or". For example, A / B may represent A or B; "and / or" herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist simultaneously.

[0103] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "outer", "inner", "circumferential", "radial", "axial", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0104] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. An electronic device, characterized in that, Comprising: A first housing; A second housing, covering the first housing along a first direction, and an accommodation cavity is formed between the second housing and the first housing; An electrical module, disposed in the accommodation cavity, and a positioning member is provided on the second housing, and the positioning member is used to provide positioning for the electrical module along a second direction; A circuit board, the electrical module and the circuit board are connected by a connecting member, and the connecting member can apply a first thrust to the electrical module along the second direction; An elastic arm, a first end of the elastic arm is fixedly arranged relative to the first housing, and a second end of the elastic arm abuts against the electrical module along the second direction to provide a second thrust to the electrical module in a direction opposite to the first thrust.

2. The electronic device according to claim 1, characterized in that, The elastic arm includes a vertical arm and a horizontal arm, the vertical arm extends along the first direction, and the horizontal arm extends along the second direction; Along the first direction, a first end of the vertical arm is fixedly arranged relative to the first housing, and a second end of the vertical arm is connected to the horizontal arm; An end face of the horizontal arm abuts against the electrical module to provide the second thrust to the electrical module.

3. The electronic device according to claim 2, wherein The end face of the horizontal arm is an arc surface protruding towards the electrical module.

4. The electronic device according to claim 2, wherein The circuit board is fixedly arranged relative to the first housing, the circuit board includes a first opening penetrating the circuit board along the first direction, the electrical module passes through the first opening, and a first end of the vertical arm is fixed on a side wall of the first opening.

5. The electronic device according to claim 2, characterized in that, A dimension of the vertical arm of the elastic arm along the second direction is 0.55 mm to 1 mm.

6. The electronic device according to claim 1, wherein A first elastic offset of a second end of the elastic arm relative to a first end is generated along the second direction to provide the first thrust to the electrical module, wherein the first elastic offset is 0.55 mm to 1 mm.

7. The electronic device according to claim 1, wherein The electrical module is a camera module.

8. The electronic device according to claim 1, wherein The circuit board is a main board of the electronic device.

9. The electronic device according to claim 1, wherein The connecting member is a flexible circuit board, one end of the flexible circuit board is connected to the circuit board, and the other end is connected to the electrical module.

10. The electronic device according to claim 1, characterized in that, An elastic modulus of the elastic arm is 0.8 GPa to 2 GPa.

11. The electronic device according to claim 1, wherein The density of the elastic arm is 1.4 g / cm 3 ~1.9 g / cm 3 .

12. The electronic device according to claim 1, wherein The electronic device includes a first camera module, a second camera module, and a third camera module, wherein the first camera module and the second camera module are oppositely arranged along the second direction, and the third camera module is the electrical module.

13. The electronic device according to claim 1, characterized in that, The elastic arm and the circuit board are integrally formed.

Images