Motor assembly, camera module and electronic equipment

Abstract

The invention discloses a motor assembly, a camera module and an electronic device, the motor assembly comprises a frame and a flexible circuit board, the flexible circuit board surrounds the periphery of the outer side wall of the frame, the flexible circuit board is provided with an outgoing line terminal at a first bending part close to a circuit board assembly, and the outgoing line terminal is used for connecting the circuit board assembly. Therefore, the wiring problem of the camera module in the related technology can be solved, and the stability of signal transmission is improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technologies, and in particular, to a motor assembly, a camera module, and an electronic device. Background Art

[0002] In order to enhance the competitiveness of electronic devices such as mobile phones and tablet computers, the electronic devices usually include a camera module to implement a camera function. However, in the related art, limited by the existing structural design, the wiring between the voice coil motor and the circuit board needs to use "in-mold injection" parts, resulting in high costs and large volumes; moreover, the path of the wiring is extremely long, which is not conducive to the stable transmission of signals. Summary of the Invention

[0003] The present application provides a motor assembly, a camera module, and an electronic device, which can solve the wiring problem of the camera module in the related art and can also improve the stability of signal transmission.

[0004] The technical solution of the present application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a motor assembly, which includes:

[0006] A frame;

[0007] A flexible circuit board that surrounds the outer sidewall of the frame, and an outgoing line terminal is placed at a first bending portion of the flexible circuit board close to the circuit board assembly, and the outgoing line terminal is used to connect to the circuit board assembly.

[0008] In a second aspect, an embodiment of the present application provides a camera module, which is characterized by including:

[0009] A circuit board assembly;

[0010] The motor assembly as described in the first aspect; wherein, the first bending portion of the flexible circuit board is close to the circuit board assembly, and an outgoing line terminal is placed on the first bending portion, and the outgoing line terminal is used to connect to the circuit board assembly.

[0011] In a third aspect, an embodiment of the present application provides an electronic device, which includes a housing and the camera module as described in the second aspect, and the camera module is disposed in the housing.

[0012] A motor component, a camera module and an electronic device provided by an embodiment of the present application. The motor component includes a flexible circuit board and a frame. The flexible circuit board surrounds the outer sidewall of the frame, and a wire outlet terminal is placed at a first bending portion of the flexible circuit board close to the circuit board component. The wire outlet terminal is used to connect the circuit board component. In this way, since the flexible circuit board can be bent into a four-sided shape and wound around the outer sidewall of the frame. Compared with the flexible circuit board in the related art, the flexible circuit board adds a fourth side surface (i.e., the first bending portion), so that the wire routing in the motor component is transmitted through the flexible circuit board, and it is no longer necessary to use in-mold injection parts, thereby reducing costs; moreover, the first bending portion of the flexible circuit board is adjacent to the circuit board component and a wire outlet terminal is placed, so that the wire routing problem of the camera module in the related art can also be solved, the wire routing path of the signal is shortened, and the signal transmission is more stable. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a composition of a camera module;

[0014] Figure 2 It is a schematic structural diagram of a flexible circuit board;

[0015] Figure 3 It is a schematic cross-sectional structural diagram of a camera module;

[0016] Figure 4 It is a schematic diagram of internal wire routing of a camera module;

[0017] Figure 5 It is a schematic diagram of the layout of the AF and OIS structures in a camera module;

[0018] Figure 6 It is a schematic diagram of a partial exploded structure of a camera module;

[0019] Figure 7 It is a schematic diagram of the composition structure of a motor component provided by an embodiment of the present application Figure 1 ;

[0020] Figure 8 It is a schematic structural diagram of a flexible circuit board provided by an embodiment of the present application;

[0021] Figure 9 It is a schematic diagram of the composition structure of a motor component provided by an embodiment of the present application Figure 2 ;

[0022] Figure 10 It is a schematic structural diagram of a frame provided by an embodiment of the present application;

[0023] Figure 11 It is a schematic diagram of the detailed structure of a motor component provided by an embodiment of the present application;

[0024] Figure 12 A top view structural schematic diagram of a camera module provided by an embodiment of the present application;

[0025] Figure 13 A front view structural schematic diagram of a camera module provided by an embodiment of the present application;

[0026] Figure 14 A side view structural schematic diagram of a camera module provided by an embodiment of the present application;

[0027] Figure 15 A compositional structure schematic of a camera module provided by an embodiment of the present application Figure 1 ;

[0028] Figure 16 A compositional structure schematic of a camera module provided by an embodiment of the present application Figure 2 ;

[0029] Figure 17 A cross-sectional structure schematic diagram of a camera module provided by an embodiment of the present application;

[0030] Figure 18 A compositional structure schematic diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0031] In order to more comprehensively understand the features and technical content of the embodiments of the present application, the implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration purposes only and are not used to limit the embodiments of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0033] It should also be noted that the terms "first / second / third" related to the embodiments of the present application are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged in a specific order or sequence when allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0034] It should also be noted that in the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0035] To facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0036] With the development and popularization of electronic devices, consumers have higher and higher requirements for the camera quality of mobile phones. Today's camera modules not only have high-pixel sensors that can capture more details, but also have advanced optical lenses and image processing technologies, such as Automatic Focus (AF) and Optical Image Stabilization (OIS) technologies; moreover, camera modules also tend to be designed in a compact and miniaturized direction.

[0037] Figure 1 It is a schematic structural diagram of the composition of a camera module. As Figure 1 shown, the camera module 10 may include a motor assembly 11, a circuit board assembly 12, and a lens assembly 13. Among them, the lens assembly 13 is disposed in the central hole of the motor assembly 11, and the circuit board assembly 12 is located on the right side of the motor assembly 11.

[0038] In Figure 1 , the motor assembly 11 may at least include a Flexible Printed Circuit (FPC) 111 and a frame 112, and the flexible printed circuit 111 is disposed on the outer side wall of the frame 112. The flexible printed circuit 111 is a three-sided structure and is in a U shape, as detailed in Figure 2 shown.

[0039] Along Figure 1 the cross-sectional structure of the A-A direction cross-section in Figure 3 shown, the camera module 10 may further include a prism assembly 14. The motor assembly 11 and the circuit board assembly 12 are placed horizontally, and the motor assembly 11 and the circuit board assembly 12 are placed on the prism assembly 14. Since this placement shape is similar to a "ship", the camera module 10 can also be called a "ship-type module" or a "ship-type camera".

[0040] The wire-out scheme of the "ship-type module" in the related technology is very complicated. As the arrow direction shown in Figure 4 , the wire routing is very long, and the flexible printed circuit in the motor assembly 11 is connected to the Printed Circuit Board (PCB) in the circuit board assembly 11 through the following "hardware insert". Not only is the wire routing particularly long, but also "Insert Molding" parts are required. Moreover, insert molding combines printing (metal) and injection molding, and the process is relatively complicated, resulting in a relatively high cost.

[0041] The reason for such wiring is that due to the special structure of the "ship-type module", the prism at the bottom is usually very close to the motor assembly, resulting in the right side of the motor assembly usually having the lowest height. Therefore, the AF and OIS structures in the motor assembly are usually arranged on the first side F1, the second side F2, and the third side F3 as shown in Figure 5 and the corresponding flexible circuit board 111 is arranged on the first side F1, the second side F2, and the third side F3 as shown in Figure 5 The first side F1, the second side F2, and the third side F3. There is no flexible circuit board in the direction of the motor assembly 11 facing the circuit board assembly 12.

[0042] Exemplarily, the motor assembly of the ship-type module is defaulted to a ball-type voice coil motor (VCM) with OIS, and its general structure can be referred to Figure 6 where three-sided magnets correspond to three-sided FPC and coils. Figure 6 FIG. shows a partially exploded structural schematic diagram of the camera module 10. The camera module 10 may include: a lens barrel 611, a shield can 612, an optical image stabilization cover 613, an OIS magnet 614, a lens holder 615, a ball guide 616, an AF carrier 617, an AF magnet 618, a coil (Coil(AF,OIS)) 619, a flexible circuit board 620, and a housing 621. Among them, the lens barrel 611 is fixed on the lens holder 615, and the shield can 612 is provided with a central hole so that the lens barrel 611 can pass through the central hole. The coil 619 is disposed on three sides of the flexible circuit board 620, and the three coils are opposite to the three magnets. When current is applied to the coil, an electromagnetic force is generated between the magnet and the coil to drive the lens barrel to move, so as to achieve the functions of autofocus or optical image stabilization.

[0043] Briefly speaking, for the camera module 10 in the related art, based on Figure 2 the flexible circuit board structure shown, the wiring of the motor assembly needs to use "in-mold injection" parts, which increases the cost, increases the volume, and the wiring path is particularly long, which is not conducive to the stable transmission of signals.

[0044] Based on this, an embodiment of the present application provides a motor assembly applicable to a ship-type module. The motor assembly includes a flexible circuit board and a frame. The flexible circuit board surrounds the outer sidewall of the frame, and a wire outlet terminal is placed at a first bending portion of the flexible circuit board close to the circuit board assembly. The wire outlet terminal is used to connect the circuit board assembly. In this way, since the flexible circuit board can be bent into a four-sided shape and wound around the outer sidewall of the frame. Compared with the flexible circuit board in the related art, the flexible circuit board adds a fourth side (i.e., the first bending portion), enabling the wiring in the motor assembly to be transmitted through the flexible circuit board, eliminating the need to use in-mold injection parts, thereby reducing costs; moreover, the first bending portion of the flexible circuit board is adjacent to the circuit board assembly and is provided with a wire outlet terminal, thus solving the wiring problem of the camera module in the related art, shortening the signal path, and making the signal transmission more stable.

[0045] The following will describe each embodiment of the present application in detail with reference to the drawings.

[0046] In an embodiment of the present application, Figure 7 is a schematic diagram of the composition structure of a motor assembly provided by an embodiment of the present application Figure 1 As Figure 7 shown, the motor assembly 71 may include a flexible circuit board 711 and a frame 712. Among them, the flexible circuit board 711 surrounds the outer sidewall of the frame 712, and a wire outlet terminal P1 is placed at a first bending portion S1 of the flexible circuit board 711 close to the circuit board assembly. The wire outlet terminal P1 is used to connect the circuit board assembly.

[0047] In the embodiment of the present application, the flexible circuit board 711 is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material, and can also be called a "flexible circuit board", a "flexible printed circuit board", etc. The flexible circuit board 711 has the characteristics of high wiring density, light weight, thin thickness, and good bendability, and can be freely bent and folded.

[0048] As Figure 8 shown, the flexible circuit board 711 can be bent into a four-sided shape. For example, the flexible circuit board 711 may include a first bending portion S1, a second bending portion S2, a third bending portion S3, and a fourth bending portion S4. Among them, the first bending portion S1, the second bending portion S2, the third bending portion S3, and the fourth bending portion S4 are sequentially connected and surround the outer sidewall of the frame 712.

[0049] In the embodiment of the present application, the second end of the first bending portion S1 is connected to the first end of the second bending portion S2, the second end of the second bending portion S2 is connected to the first end of the third bending portion S3, and the second end of the third bending portion S3 is connected to the first end of the fourth bending portion S4 to form the flexible circuit board 711.

[0050] In the embodiment of the present application, an outgoing wire terminal P1 is placed on the first bending portion S1, and the first bending portion S1 is exactly adjacent to the circuit board assembly, so that the wiring is relatively short, which is beneficial to signal transmission.

[0051] In some embodiments, the motor assembly 71 may further include at least one driving component, and the driving component is disposed on the side of the motor assembly corresponding to the second bending portion S2, the third bending portion S3 or the fourth bending portion S4.

[0052] In the embodiment of the present application, each driving component may include a coil and a magnet. When an electric current is passed through the coil, an electromagnetic force is generated between the magnet and the coil to move the lens assembly. Exemplarily, the driving component may refer to an AF structure, and by driving the lens assembly to move, an autofocus function is realized; or, the driving component may also refer to an OIS structure, and by driving the lens assembly to move, an optical image stabilization function is realized. Here, for the flexible circuit board 711, the second bending portion S2, the third bending portion S3 and the fourth bending portion S4 are parts that already exist in the related art, and the driving component can usually be disposed on these three sides.

[0053] In the embodiment of the present application, taking three driving components as an example, that is, at least one driving component may include a first driving component, a second driving component and a third driving component. Exemplarily, the first driving component is used to realize the autofocus function, and the second driving component and the third driving component are used to realize the optical image stabilization function.

[0054] In some embodiments, referring to Figure 9 , the first driving component may include a first coil 81 and a first magnet 84. The first coil 81 is disposed on the second bending portion S2, and the first coil 81 is disposed opposite to the first magnet 84. The second driving component may include a second coil 82 and a second magnet 85. The second coil 82 is disposed on the third bending portion S3, and the second coil 82 is disposed opposite to the second magnet 85. The third driving component may include a third coil 83 and a third magnet 86. The third coil 83 is disposed on the fourth bending portion S4, and the third coil 83 is disposed opposite to the third magnet 86.

[0055] In the embodiment of the present application, the motor assembly 71 may further include a first bracket and a second bracket, and the first bracket and the second bracket are used to carry three magnets (the first magnet 84, the second magnet 85 and the third magnet 86).

[0056] In a possible implementation manner, the first magnet 84 may be disposed on the side of the first bracket corresponding to the first coil 81. Among them, the first coil 81 is disposed on the second bending portion S2 and on the side facing the first bracket, and the first magnet 84 is disposed outside the first bracket, so that the first coil 81 and the first magnet 84 are disposed opposite to each other. Exemplarily, as Figure 6In the decomposition structure shown, the first magnet 84 can be Figure 6 the AF magnet 618 shown, and the first bracket can be Figure 6 the AF carrier 617 shown. In this way, when an electric current is applied to the first coil, a Lorentz force can be generated, thereby driving the first bracket carrying the first magnet to move, and thus the autofocus function can be realized.

[0057] In a possible implementation manner, the second magnet 85 can be disposed on the side of the second bracket corresponding to the second coil 82. Among them, the second coil 82 is disposed on the third bending portion S3 and on the side facing the second bracket, and the second magnet 85 is disposed on the outside of the second bracket, so that the second coil 82 and the second magnet 85 are disposed opposite to each other. The third magnet 86 can be disposed on the side of the second bracket corresponding to the third coil 83. Among them, the third coil 83 is disposed on the fourth bending portion S4 and on the side facing the second bracket, and the third magnet 86 is disposed on the outside of the second bracket, so that the third coil 83 and the third magnet 86 are disposed opposite to each other. Exemplarily, continue to refer to Figure 6 the decomposition structure shown, the second magnet 85 and the third magnet 86 can be Figure 6 the OIS magnet 614 shown, and the second bracket can be Figure 6 the lens bracket 615 shown. In this way, when an electric current is applied to the second coil and the third coil, a Lorentz force can be generated, thereby driving the second bracket carrying the second magnet and the third magnet to move, and thus the optical image stabilization function can be realized.

[0058] In the embodiments of the present application, in order to enable the coil and the magnet to act directly, corresponding openings can be provided on the frame 712, as detailed in Figure 10 the figure shown. In some embodiments, the first coil 81 can be disposed on the second bending portion S2. In order to ensure the magnetic action effect between the first coil 81 and the first magnet 84, a first opening 87 is provided on the side wall of the frame 712 corresponding to the position of the first coil 81, so that the first coil 81 can pass through the first opening and act directly on the first magnet 84. Similarly, the second coil 82 can be disposed on the third bending portion S3. In order to ensure the magnetic action effect between the second coil 82 and the second magnet 85, a second opening 88 is provided on the side wall of the frame 712 corresponding to the position of the second coil 82, so that the second coil 82 can pass through the second opening and act directly on the second magnet 85. The third coil 83 can be disposed on the fourth bending portion S4. In order to ensure the magnetic action effect between the third coil 83 and the third magnet 86, a third opening 89 is provided on the side wall of the frame 712 corresponding to the position of the third coil 83, so that the third coil 83 can pass through the third opening and act directly on the third magnet 86.

[0059] In the embodiments of the present application, the first bracket can be disposed between the frame and the second bracket. In order to enable the second magnet 85 and the second coil 82 to act directly, a fourth opening (not shown in the figure) needs to be provided at the position of the side wall of the first bracket corresponding to the second coil 82, so that the second coil 82 can pass through the second opening and the fourth opening in sequence to act directly on the second magnet 85. Similarly, in order to enable the third magnet 86 and the third coil 83 to act directly, a fifth opening (not shown in the figure) needs to be provided at the position of the side wall of the first bracket corresponding to the third coil 83, so that the third coil 83 can pass through the third opening and the fifth opening in sequence to act directly on the third magnet 86.

[0060] In a specific embodiment, as Figure 11 shown, the motor assembly 70 may further be provided with a central hole, and the lens assembly 60 is disposed in the central hole of the motor assembly 70. In this way, based on the electromagnetic force generated between the first coil and the first magnet, the automatic focusing function of the lens assembly 60 can be realized, and based on the electromagnetic force generated between the second coil and the second magnet and the electromagnetic force generated between the third coil and the third magnet, the optical image stabilization function of the lens assembly 60 can be realized.

[0061] The embodiments of the present application provide a motor assembly. The flexible circuit board can be bent into a four-sided shape and wound around the outer side wall of the frame. Compared with the flexible circuit board in the related art, the flexible circuit board adds a fourth side surface (i.e., the first bending portion), so that the wiring in the motor assembly is transmitted through the flexible circuit board, and it is no longer necessary to use in-mold injection parts, thereby reducing costs; moreover, the first bending portion of the flexible circuit board is adjacent to the circuit board assembly and is provided with an outgoing line terminal, thereby being able to solve the wiring problem of the camera module in the related art and being beneficial to signal transmission.

[0062] In another embodiment of the present application, Figure 12 is a top view structural schematic diagram of a camera module provided by the embodiments of the present application. As Figure 12 shown, the camera module 120 may include a circuit board assembly 20 and the motor assembly 70 described in the foregoing embodiments.

[0063] In the embodiments of the present application, in the motor assembly 70, the first bending portion S1 of the flexible circuit board 711 is close to the circuit board assembly 20, and an outgoing line terminal P1 is placed on the first bending portion S1, and the outgoing line terminal P1 is used to connect the circuit board assembly 20.

[0064] That is to say, the newly added fourth side surface (i.e., the first bending portion S1) of the flexible circuit board 711 is exactly adjacent to the circuit board assembly 20, so as to be able to shorten the wiring distance of the motor assembly and be beneficial to signal transmission.

[0065] In a possible implementation, the outgoing terminal P1 on the first bending portion S1 can be directly connected to the incoming terminal P2 of the circuit board assembly 20, for example, by directly soldering with solder.

[0066] It can be understood that Active Alignment can be abbreviated as the AA process, which mainly refers to a technology for determining the relative positions during the assembly of spare parts. When assembling each spare part of the camera, the AA device will detect the semi-finished product being assembled, actively align according to the actual situation of the semi-finished product being assembled, and then assemble a spare part in place. That is to say, the AA process is a high-precision technology used for the assembly of optical modules (such as cameras). By real-time monitoring and adjusting the relative positions of optical components (such as lenses, image sensors), it ensures their precise matching in six degrees of freedom (translation along the X / Y / Z axes and rotation around θ X / θ Y / θ Z rotation), thereby significantly improving the imaging quality and module performance.

[0067] In the embodiment of the present application, as an important process of the camera module, the main function of the AA process is to assist the assembly and positioning of the structure through the image quality, and its positioning accuracy can be several levels higher than that of ordinary structure designs. To improve the accuracy, "AA" is required between the motor assembly and the circuit board assembly. Since the AA gap is at least 0.15 mm, the distance range between the two sides is 0.3 - 0.8 mm, and the maximum can be more than 0.5 mm, resulting in the inability to directly solder the two.

[0068] In another possible implementation, the outgoing terminal P1 on the first bending portion S1 and the incoming terminal P2 of the circuit board assembly 20 can be connected by multiple metal wires.

[0069] In the embodiment of the present application, if multiple metal wires are used for connection, then one end of each metal wire needs to be fixedly connected to the outgoing terminal P1 on the first bending portion S1, and the other end needs to be fixedly connected to the incoming terminal P2 of the circuit board assembly 20. In this way, welding is required on both sides, resulting in a complex welding process and prone to phenomena such as virtual soldering and false soldering; in addition, during the active alignment process, the problem of solder joint fracture is also likely to occur, resulting in unreliable connection between the two sides.

[0070] In yet another possible implementation, to achieve a reliable connection between the motor assembly and the circuit board assembly, continue to refer to Figure 12 , the camera module 120 can further include an adapter board 30; wherein, the adapter board 30 is respectively connected to the outgoing terminal P1 on the first bending portion S1 and the incoming terminal P2 of the circuit board assembly 20.

[0071] In the embodiment of the present application, no circuit is arranged on the adapter board 30, and the adapter board 30 mainly functions as a wire routing adapter. In addition, as a small board, the adapter board 30 has a relatively small area, for example, about 2 mm in width, so the cost increase is relatively small (negligible).

[0072] To more intuitively illustrate the position of the adapter board 30, Figure 12 FIG. is a top view structural example of the camera module 120, Figure 13 FIG. is a front view structural example of the camera module 120, Figure 14 FIG. is a side view structural example of the camera module 120.

[0073] It should also be noted that in order to make the connection between the motor assembly and the circuit board assembly reliable, the adapter board 30 can be made of printed circuit board material, that is, PCB material. Since the substrate of PCB is a hard material (rigid board) compared with the flexible circuit board and cannot be bent, and has high mechanical strength; therefore, the adapter board 30 as an intermediate medium makes the connection between the two more reliable and avoids deformation.

[0074] In some embodiments, the camera module 120 may further include a lens assembly 60. For details, see Figure 11 、 Figure 12 and Figure 13 It can be seen that the lens assembly 60 is disposed in the central hole of the motor assembly 70.

[0075] In the embodiment of the present application, when current is passed through at least one coil in the motor assembly 70, an electromagnetic force is generated between at least one magnet and at least one coil in the motor assembly 70 to move the lens assembly 60.

[0076] Exemplarily, the motor assembly 70 may include a first driving component, a second driving component, and a third driving component. For example, in the first driving component, when current is passed through the first coil, the electromagnetic force generated between the first magnet and the first coil drives the lens assembly 60 to move, and the automatic focusing function of the lens assembly can be realized. Another example is that in the first driving component and the third driving component, when current is passed through the second coil and the third coil, the electromagnetic force generated between the second magnet and the second coil and the electromagnetic force generated between the third magnet and the third coil can drive the lens assembly 60 to move, and the optical image stabilization function of the lens assembly can be realized.

[0077] In some embodiments, see Figure 15 and Figure 16 , the circuit board assembly 20 may include a first circuit board 21; wherein, the incoming line terminal P2 is disposed on the first circuit board 21 and on the side close to the motor assembly 70.

[0078] In an embodiment of the present application, the first circuit board 21 may be a PCB board, on which chip components of the camera module and related traces are arranged, and signals can be transmitted between the first circuit board 21 and the motor assembly. To facilitate the fixed connection with the adapter board 30, the incoming line terminal P2 may be disposed on the left side of the first circuit board 21, that is, the side close to the motor assembly. At this time, compared with the incoming line terminal P2 being disposed on the right side of the first circuit board 21, the embodiment of the present application can shorten the trace length, which is beneficial to signal transmission.

[0079] It should be noted that if the PCB thickness of the first circuit board 21 is relatively thin, resulting in poor strength (or "rigidity"), the PCB thickness can be increased at this time, or a reinforcing plate can also be added. In a possible implementation manner, as Figure 16 shown, the circuit board assembly 20 may further include a reinforcing plate 22, and the reinforcing plate 22 covers the surface of the first circuit board.

[0080] In an embodiment of the present application, the reinforcing plate 22 may be made of stainless steel, which has good corrosion resistance and mechanical stability, so the reinforcing plate 22 can also be referred to as a "steel patch".

[0081] In an embodiment of the present application, for the case where the PCB has poor strength, steel sheet reinforcement is a common reinforcing material, which is mainly used to improve the mechanical strength and stability of local areas. Exemplarily, the steel patch is disposed on the outer surface of the first circuit board 21 to support the first circuit board 21, which can improve the structural reliability of the first circuit board.

[0082] It should also be noted that, to facilitate the fixed connection with the adapter board 30, a notch for exposing the incoming line terminal is provided on the side of the reinforcing plate 22 close to the motor assembly 70. In this way, the incoming line terminal P2 is exposed outside the reinforcing plate 22, which can facilitate the connection between the adapter board 30 and the incoming line terminal P2.

[0083] That is to say, in an embodiment of the present application, the reinforcing plate (i.e., "steel patch") can be retained in the circuit board assembly. At this time, a notch needs to be provided on one side of the reinforcing plate to expose the incoming line terminal P2 of the first circuit board; or, when the rigidity of the first circuit board meets the requirements, the reinforcing plate can also be removed from the circuit board assembly, and no limitation is made here.

[0084] In an embodiment of the present application, the cross-sectional structure of the Figure 12 along the B-B direction shown in Figure 17 is as shown in Figure 17 . Specifically, referring to

[0085] , the camera module 120 may further include a prism assembly 40. The motor assembly 70 and the circuit board assembly 20 are placed horizontally, and the motor assembly 70 and the circuit board assembly 20 are placed on the prism assembly 40.

[0085] In the embodiment of the present application, a central hole is provided in the motor assembly 70, and the lens assembly 60 is placed in the central hole of the motor assembly 70. As Figure 17 This placement method is similar in shape to a "ship", so the camera module 10 can also be called a "ship-type module" or a "ship-type camera", which can optimize the layout space.

[0086] In addition, in the embodiment of the present application, the motor assembly 70 and the circuit board assembly 20 can be connected not only through the bottom structure, but also directly through the adapter board 30, which is equivalent to adding a "bridge", making the module more stable and reliable.

[0087] The embodiment of the present application provides a camera module. The flexible circuit board can be bent into a four-sided shape and wound around the outer side wall of the frame. Compared with the flexible circuit board in the related art, the flexible circuit board adds a fourth side (i.e., the first bending part), so that the wiring in the motor assembly is transmitted through the flexible circuit board, and it is no longer necessary to use in-mold injection parts, thereby reducing costs; and the first bending part of the flexible circuit board is adjacent to the circuit board assembly and is provided with outgoing terminals, which can solve the wiring problem of the camera module in the related art and is beneficial to signal transmission.

[0088] In another embodiment of the present application, Figure 18 is a schematic structural diagram of a composition of an electronic device provided by an embodiment of the present application. Among them, the electronic device 180 involved here can be any device with communication and storage functions, such as a tablet computer, a mobile phone, an e-reader, a remote control, a personal computer, a laptop computer, a vehicle-mounted device, an Internet TV, a wearable device, and other intelligent devices with network functions.

[0089] In the embodiment of the present application, the electronic device 180 may include a housing 1801 and a camera module 1802. The camera module 1802 may be the camera module 120 in any of the above embodiments. For details, please refer to the above content and will not be elaborated here.

[0090] In the embodiment of the present application, the camera module 1802 is disposed in the housing 1801. And a lens hole 1803 is opened on the housing 1801 corresponding to the position of the lens in the lens assembly, and light can enter the camera module 1802 through the lens hole 1803. Based on the camera module 1802 of the electronic device 180, automatic focusing and anti-shake functions can be realized, so the shooting application scenarios of the electronic device can be broadened.

[0091] It can be understood that the technical solution of the embodiment of the present application mainly solves the wiring problem of the "ship-type module". The FPC board inside the motor assembly is modified into a four-sided shape and wound around the frame of the motor assembly, as Figure 7As shown, and there are outgoing terminals placed on the added FPC board. The added FPC part is exactly adjacent to the circuit board assembly of the camera module (which can also be called the "chip assembly (including PCB)").

[0092] In addition, at the position of the outgoing terminal of the flexible circuit board corresponding to the PCB in the circuit board assembly, an "incoming terminal" is correspondingly placed. By adding a small board (i.e., the aforementioned adapter board 30), as shown in Figure 12, this adapter board serves as an intermediate medium and is respectively connected to the PCB and the FPC in the motor assembly, which can perfectly solve the problem of the outgoing line of the camera module in the related technology. It should be noted that since both the motor assembly and the circuit board assembly need to undergo the AA process, and the AA gap needs to be at least 0.15 mm, the maximum distance on both sides can be more than 0.5 mm, so they cannot be directly welded.

[0093] In the embodiment of the present application, through the above embodiments, the specific implementation of the foregoing embodiments is elaborated in detail. It can be seen from this that through the technical solutions of the foregoing embodiments, the insert molding parts in the related technology can be cancelled, the VCM structure of the motor assembly can be changed (specifically, the FPC is changed from a three-sided shape to a four-sided shape), and the connection wires can be directly transferred through the adapter board. In this way, since the insert molding parts are cancelled, the cost can be reduced; and the signal can be better, because the transmission line is shortened, making the transmitted signal more stable; at the same time, the structural strength can also be increased. For example, the use of the adapter board between the motor assembly and the circuit board assembly provides a direct connection, which is equivalent to adding a "bridge", making the camera module more stable and reliable, and thus improving the shooting performance of the electronic device.

[0094] It should be understood that those skilled in the art should understand that the present application can adopt the form of hardware embodiments. Exemplarily, the hardware embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or connection shown or discussed with each other can be an indirect coupling or communication connection through some interfaces, devices or modules, and can be in electrical, mechanical or other forms.

[0095] The modules described above as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple network modules; some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Additionally, in various embodiments of the present application, all the functional modules may be integrated in one processing module, or each module may be separately regarded as one module, or two or more modules may be integrated in one module; the above-mentioned integrated modules may be implemented in the form of hardware, or in the form of hardware plus software functional modules.

[0096] It should also be understood that the "one embodiment" or "some embodiments" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the "in one embodiment" or "in some embodiments" that appear throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in various embodiments of the present application, the sequence numbers of the above-mentioned components do not mean the order of execution, and the order of execution should be determined by their functions and internal logics, and should not constitute any limitation to the implementation process of the embodiments of the present application. The sequence numbers of the embodiments of the present application above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0097] It should be noted that in the present application, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0098] The sequence numbers of the embodiments of the present application above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0099] The features disclosed in the several product embodiments provided by the present application can be arbitrarily combined without conflict to obtain new product embodiments.

[0100] The features disclosed in the several device embodiments provided by the present application can be arbitrarily combined without conflict to obtain new device embodiments.

[0101] As described above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claimed rights.

Claims

1. A motor assembly, characterized in that: The motor assembly comprises: frame; A flexible circuit board is surrounded by the outer side wall of the frame, and an outlet terminal is placed on the first bending portion of the flexible circuit board close to the circuit board assembly, and the outlet terminal is used to connect the circuit board assembly.

2. The motor assembly according to claim 1, characterized in that The flexible circuit board further includes a second bending portion, a third bending portion and a fourth bending portion, wherein: The first bending portion, the second bending portion, the third bending portion and the fourth bending portion are sequentially connected and surround the outer side wall of the frame; The motor assembly further includes at least one driving assembly, and the driving assembly is disposed on a side of the motor assembly corresponding to the second bending portion, the third bending portion, or the fourth bending portion.

3. The motor assembly according to claim 2, characterized in that: The at least one drive assembly comprises a first drive assembly, a second drive assembly and a third drive assembly, wherein: The first driving component includes a first coil, the first coil is arranged on the second bending portion, and a first opening is formed on the side wall of the corresponding side of the frame for allowing the first coil to pass through; The second driving component includes a second coil, the second coil is arranged on the third bending portion, and a second opening is formed on the side wall of the corresponding side of the frame for the second coil to pass through; The third driving component includes a third coil, the third coil is arranged on the fourth bending portion, and a third opening is formed on the side wall on the corresponding side of the frame for the third coil to pass through.

4. The motor assembly according to claim 3, characterized in that: The motor assembly further comprises a first bracket and a second bracket, wherein: The first driving assembly further includes a first magnet, which is disposed on a side of the first bracket corresponding to the first coil; The second driving assembly further includes a second magnet, and the second magnet is disposed on a side of the second bracket corresponding to the second coil; The third driving component also includes a third magnet, and the third magnet is arranged on the side of the second bracket corresponding to the third coil.

5. A camera module, characterized in that: include: Circuit board assembly; A motor assembly as described in any one of claims 1 to 4; wherein, the first bending portion of the flexible circuit board is close to the circuit board assembly, and an output terminal is placed on the first bending portion, and the output terminal is used to connect the circuit board assembly.

6. The camera module according to claim 5, characterized in that: The camera module also includes an adapter plate, wherein the adapter plate is respectively connected to the outlet terminals on the first bending portion and the inlet terminals of the circuit board assembly.

7. The camera module according to claim 6, characterized in that: The adapter board is made of printed circuit board material.

8. The camera module according to claim 6, characterized in that: The circuit board assembly includes a first circuit board; wherein the incoming terminal is arranged on the first circuit board and close to one side of the motor assembly.

9. The camera module according to claim 8, characterized in that: The circuit board assembly further includes a reinforcing plate, and the reinforcing plate covers the surface of the first circuit board, wherein: A notch is formed on one side of the reinforcing plate close to the motor assembly to expose the incoming terminal.

10. The camera module according to claim 5, characterized in that: The camera module also includes a lens assembly, wherein: The lens assembly is arranged in the central hole of the motor assembly. When current is passed through at least one coil in the motor assembly, an electromagnetic force is generated between at least one magnet in the motor assembly and the at least one coil to move the lens assembly.

11. The camera module according to any one of claims 5 to 10, characterized in that: The camera module also includes a prism assembly, wherein: The motor assembly and the circuit board assembly are placed horizontally, and the motor assembly and the circuit board assembly are placed above the prism assembly.

12. An electronic device, characterized in that: The electronic device comprises a housing and a camera module as claimed in any one of claims 5 to 11, wherein the camera module is arranged in the housing.

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