Module motor, camera module, electronic device and preparation method of shell

Abstract

The application relates to the technical field of terminals, in particular to a module motor, a camera module, an electronic device and a preparation method of a shell. The module motor comprises a base, a carrier, a driving assembly and a shell; the shell forms a containing cavity with an opening; the carrier and the driving assembly are arranged in the containing cavity, and the driving assembly is connected between the carrier and the base and used for driving the carrier to move relative to the base in a direction perpendicular to the base; the shell is further provided with a stop structure, the stop structure comprises a connecting part and a first stop part, the connecting part and the first stop part are an injection-molded integrated structure, the connecting part is embedded in a through hole, and the first stop part extends into the containing cavity to receive the impact of the carrier; the hardness of the stop structure is greater than or equal to 20 Shore. The stop structure can be formed by injection molding through the through hole, can be implemented at any position of the shell to prevent the carrier from colliding with the shell, and occupies a small space, which is beneficial to the miniaturization of the device.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202210690823.6, filed on June 17, 2022, entitled “Preparation Method of Modular Motor, Camera Module, Electronic Device and Housing”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of terminal technology, and in particular to a method for manufacturing a module motor, a camera module, an electronic device, and a housing. Background Technology

[0004] In recent years, camera functionality has become an important parameter for consumers when considering the performance of portable electronic devices. Generally, a camera module motor is used to achieve the focusing function of the camera module. The camera module motor has a fixed part and a moving part. The fixed part is fixed to the housing of the electronic device, and the moving part is connected to the optical components. The moving part can reciprocate relative to the fixed part in a set direction, thereby driving the optical components to move, thus achieving the camera focusing function.

[0005] To protect optical components, a stop or barrier is installed inside the housing of electronic devices. Currently, these stops and barriers are relatively large and require specific space for placement, hindering the miniaturization of electronic components. Summary of the Invention

[0006] This application provides a method for manufacturing a modular motor, a camera module, an electronic device, and a housing, which provides good impact protection while facilitating the miniaturization of the devices.

[0007] In a first aspect, the application provides a modular motor which can be applied to a device with camera function. The modular motor comprises a base, a carrier, a driving assembly and a shell. The base can provide support for other structures. The shell is fixed to the base, and the shell forms a receiving cavity with an opening, and the base is fixed to the side of the opening of the shell. The receiving cavity of the shell can be used to set the carrier and the driving assembly. The driving assembly has a fixed part and a movable part. The fixed part is fixed to the base, and the movable part is connected to the carrier. The movable part can move relative to the fixed part, thereby driving the carrier to move relative to the base. Here, the movement direction of the carrier is perpendicular to the base. The shell is provided with a through hole and a stop structure. With the receiving cavity of the shell as a reference, the shell has an inner surface and an outer surface, and the through hole penetrates the inner surface and the outer surface. The stop structure includes a connecting part and a first stop part. The connecting part and the first stop part are injection-molded as an integral structure. The connecting part is embedded in the through hole, and the first stop part protrudes from the inner surface, i.e. the first stop part extends into the above-mentioned receiving cavity. The first stop part can be used to receive the impact of the carrier. The hardness of the stop structure can reach greater than or equal to 20 Shore hardness. When the carrier moves and impacts the first stop part, the first stop part can maintain a relatively stable structure form and will not deform greatly, thereby achieving good anti-impact effect. When the carrier moves in the receiving cavity, the first stop part can provide impact protection for the movable part, preventing the carrier from directly impacting the shell. The stop structure can be formed by injection molding through the through hole, and can be implemented at any position of the shell without being affected by the position of other devices. Moreover, the stop structure occupies a small space, which is conducive to the miniaturization of the device.

[0008] The first stop part can cover the through hole in the orthographic projection on the shell. The first stop part is used to bear the impact of the carrier, and its large coverage area can provide better impact protection.

[0009] Possibly, the distance between the edge of the first stop part and the edge of the through hole in the direction perpendicular to the axis of the through hole is greater than or equal to the maximum radial dimension of the through hole. Based on the large hardness of the stop structure, it can be considered that a first stop part with a large coverage area can be achieved through a small through hole, thereby forming a large impact surface to meet the impact protection requirement. Specifically, the distance between the edge of the first stop part and the edge of the through hole in the direction perpendicular to the axis of the through hole is at least 2 times the maximum radial dimension of the through hole. For example, the maximum radial dimension of the through hole is 0.4 mm, and the distance between the edge of the first stop part and the axis of the through hole is 1 mm-2 mm.

[0010] In a possible implementation, the stop structure further includes a second stop portion, the second stop portion and the connecting portion are integrally formed by injection molding, and the second stop portion protrudes from the outer surface, that is, the second stop portion extends out of the shell. The first stop portion and the second stop portion are connected by the connecting portion, and the second stop portion can bear the impact of the structure outside the shell and can also increase the structural stability of the stop structure. The orthographic projection of the second stop portion on the shell can also cover the through hole.

[0011] To improve the structural stability of the stop structure, the shell is further provided with a support structure, and the support structure extends into the stop structure.

[0012] In a possible implementation, the support structure is in the shape of a "Chinese character", and the two ends of the stop structure are fixed to the inner wall of the through hole, and the support structure vertically penetrates the axis of the through hole.

[0013] In another possible implementation, the support structure includes two support portions, and the two support portions are fixed to the inner wall of the through hole, and the two support portions are centrally symmetric about the axis of the through hole. Possibly, each support portion is arranged obliquely relative to the axis of the through hole, that is, one end of the support portion is fixed to the inner wall of the through hole, and the other end extends to the accommodation cavity. In addition, a bending portion can be formed at the free end of each support portion to further increase the stable support of the support structure on the stop structure.

[0014] The shell can specifically include a top portion and a side portion, and the side portion is arranged around the edge of the top portion to form the accommodation cavity; the stop structure can be arranged on the top portion, or the stop structure can be arranged on the side portion, or the stop structure can be arranged on both the top portion and the side portion.

[0015] When the stop structure is arranged on the side portion, the height of the stop structure extending into the accommodation cavity of the shell is 0.1-0.5 mm. When the stop structure is arranged on the top portion, the height of the stop structure extending into the accommodation cavity of the shell is 0.1-0.5 mm.

[0016] The material of the stop structure includes any one of liquid crystal polymer (LCP), thermoplastic polyurethane rubber, thermoplastic elastomer, silica gel, and foam. The material of the shell includes any one of stainless steel and liquid crystal polymer.

[0017] When the module motor is a voice coil motor (VCM), the driving assembly includes a driving magnet and a driving coil, the driving magnet is fixed to the bottom of the carrier, and the driving coil is fixed to the bottom. The driving coil corresponds to the driving magnet, and electromagnetic induction can be achieved between the two. When the driving coil is electrified, the current in the driving coil generates an electric field, and the driving magnet in the electric field moves due to the principle of electromagnetic induction, thereby driving the carrier to move.

[0018] Possibly, a resilient structure is arranged between the module motor and the carrier, which can be a spring. The stop structure is arranged in position corresponding to the resilient structure along the height direction of the carrier. That is, the stop structure can not interfere with the resilient structure.

[0019] In a second aspect, the present application provides a camera module, comprising a lens and the module motor described above, wherein the lens is arranged on the carrier of the module motor, and when the lens moves with the carrier, the focusing of the camera module can be achieved.

[0020] In a third aspect, the present application provides an electronic device, such as a smart phone or a tablet computer with camera function. The electronic device comprises a device body and the camera module described above, and the camera module is installed on the device body, so that the electronic device has better camera function.

[0021] In a fourth aspect, the present application provides a preparation method of a shell, which is used to prepare the shell in any of the module motors described above, and the shell has a receiving cavity. The preparation method comprises the following steps:

[0022] Punching a hole on the shell to form a through hole, and the through hole penetrates the inner surface and the outer surface of the shell;

[0023] Forming a stop structure through the through hole to extend into the receiving cavity of the shell.

[0024] In a possible implementation, after the hole is punched on the module motor to form the through hole, and before the stop structure is formed through the through hole to extend into the receiving cavity of the shell, the method further comprises the following steps:

[0025] Forming a support structure in the through hole.

[0026] The forming of the stop structure through the through hole to extend into the receiving cavity of the shell comprises the following steps:

[0027] Providing a mold, and the mold has an inner cavity;

[0028] Placing the shell in the mold, so that the through hole is in communication with the inner cavity;

[0029] Injecting a liquid material into the inner cavity;

[0030] Cooling the liquid material to form the stop structure. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1a It is a cross-sectional structure schematic diagram of a camera module motor in the prior art in a front view state;

[0032] Figure 1b It is a cross-sectional structure schematic diagram of a camera module motor in the prior art in a top view state;

[0033] Figure 2a A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0034] Figure 2b A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0035] Figure 2c A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0036] Figure 3a A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0037] Figure 3b A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0038] Figure 3c A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0039] Figure 3d A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0040] Figure 3e A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0041] Figure 4 A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0042] Figure 5 A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0043] Figure 6 A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0044] Figure 7 A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0045] Figure 8 A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0046] Figure 9a A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0047] Figure 9b A structural schematic diagram of a modular motor provided for an embodiment of the present application; Figure 9a A structural schematic diagram of a modular motor provided for an embodiment of the present application;

[0048] Figure 10a A structural schematic diagram of a middle shell of a module motor provided by an embodiment of the present application;

[0049] Figure 10b A structural schematic diagram of a middle shell of a module motor provided by an embodiment of the present application; Figure 10a A sectional structural schematic diagram of a plane in which M2-M2 lies;

[0050] Figure 11 A sectional structural schematic diagram of a middle shell of a module motor provided by an embodiment of the present application;

[0051] Figure 12a A structural schematic diagram of a middle shell of a module motor provided by an embodiment of the present application;

[0052] Figure 12b A structural schematic diagram of a middle shell of a module motor provided by an embodiment of the present application; Figure 12a A sectional structural schematic diagram of a plane in which M3-M3 lies;

[0053] Figure 13 A structural schematic diagram of a middle shell of a module motor provided by an embodiment of the present application;

[0054] Figure 14a A top view of a module motor provided by an embodiment of the present application;

[0055] Figure 14b A sectional structural schematic diagram of a plane in which N1-N1 lies; Figure 14a

[0056] A sectional structural schematic diagram of a plane in which N1-N1 lies; Figure 14c An enlarged view of a C part; Figure 14b

[0057] A front view of a module motor provided by an embodiment of the present application; Figure 15a

[0058] A sectional structural schematic diagram of a plane in which N2-N2 lies; Figure 15b Figure 15a An enlarged view of a D part;

[0059] Figure 15c Figure 15b A sectional structural schematic diagram of a plane in which N3-N3 lies;

[0060] Figure 16 A structural schematic diagram of a camera module provided by an embodiment of the present application;

[0061] Figure 17a A top view of a camera module provided by an embodiment of the present application;

[0062] Figure 17b A sectional structural schematic diagram of a plane in which N3-N3 lies; Figure 18

[0063] Figure 19a ​​​This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0064] Figure 19b A schematic flowchart illustrating a method for preparing a shell according to an embodiment of this application;

[0065] Figure 19c A schematic flowchart illustrating a method for preparing a shell according to an embodiment of this application;

[0066] Figure 1a This is a schematic flowchart illustrating a method for preparing a shell according to an embodiment of this application. Detailed Implementation

[0067] Camera functionality is an important parameter for evaluating the performance of electronic devices. Camera modules typically achieve focusing by moving optical components such as lenses using a camera module motor. This camera module motor includes a fixed part and a moving part, such as... Figure 1b and Figure 1a As shown, the fixed part includes, for example, the base 11' of the camera module motor and the side wall 12' fixed to the base 11', and the movable part includes, for example, the carrier 3' of the camera module motor. The camera module motor can drive the carrier 3' to move relative to the base 11' in a predetermined direction by means of electromagnetic drive or the like. In this process, in order to avoid damage caused by collision between the movable part and the fixed part, a stop wall 2' is generally provided on the side of the fixed part facing the movable part. Figure 1b The cross-sectional structure of the camera module motor in the main view is shown. The stop wall 2' is fixed to the base 11' and extends along the side wall 12'. It is not only large in size, but can only grow on the base 11' and attached to the side wall 12'. Figure 2a The diagram shows a top-view cross-sectional structure of the camera module motor. The stop wall 2' needs to avoid other components; taking the spring 4' as an example, the stop wall 2' cannot be placed at the corner of the camera module to avoid interference with the spring 4', which imposes many limitations in design and manufacturing. It is evident that the existing stop and impact-resistant structures are not conducive to the miniaturization of electronic devices.

[0068] Therefore, this application provides a method for manufacturing a modular motor, a camera module, an electronic device, and a housing. When applied in devices with fixed and movable parts, this modular motor can withstand impacts through a smaller stop structure, achieving impact protection. Furthermore, the stop structure is not limited by the structure of other components, which is beneficial for miniaturizing the device.

[0069] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more” unless the context clearly indicates otherwise.

[0070] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0071] like Figure 2a As shown, this application embodiment provides a module motor 100, which can be used to drive the lens of an electronic device to achieve focusing motion. Figure 2a As shown, the modular motor 100 includes a base 30, a carrier 20, a drive assembly, and the aforementioned housing 1 (the drive assembly is not shown here). The housing 1 is fixed to the base 30, and the housing 1 and base 30 serve as a fixing part. When the housing 1 is fixed to the base 30, the carrier 20 and the drive assembly can be disposed between the base 30 and the housing 1. Specifically, the base 30 and the carrier 20 are connected via the drive assembly. During operation of the modular motor 100, the drive assembly can drive the carrier 20 to move in a direction perpendicular to the base 30, that is, the drive assembly can drive the carrier 20 to move closer to or further away from the base 30. Figure 2b In the middle, the direction perpendicular to the base 30 is the Z direction, which can also be regarded as the height direction of the shell 1.

[0072] When the module motor 100 is a voice coil motor, the driving assembly can specifically include a driving magnet and a driving coil. The driving magnet can be fixed to the bottom of the carrier 20, and the driving coil can be arranged on the base 30 and correspond to the driving magnet. The driving magnet and the driving coil have an electromagnetic induction relationship. The driving coil generates a magnetic field when energized, and the driving magnet in the magnetic field can be driven. When the driving coil is energized, the driving magnet in the electromagnetic field moves under the action of force. In a specific structure, the driving magnet is connected to the carrier 20. When the driving coil drives the driving magnet to move, the driving magnet can drive the carrier 20 to move in a specified direction. It should be understood that, according to different use requirements, the voice coil motor can be of an open loop, a closed loop, an optical image stabilizer (OIS), or the like, which is not limited herein.

[0073] The shell 1 specifically includes a top portion 11 and a side portion 12. The top portion 11 is rectangular. The side portion 12 is arranged around the edge of the top portion 11, so that the side portion 12 and the top portion 11 can form a space capable of accommodating the carrier 20 and the driving assembly. The base 30 is connected to the side portion 12. The top portion 11 is perpendicular to the Z direction, and the plane on which the top portion 11 is located is parallel to the X direction and the Y direction. The carrier 20 can be used to carry optical devices such as lenses, so as to drive the optical devices such as lenses to move and achieve zooming. In order to facilitate the optical devices such as lenses to extend out of the shell 1, a notch T is arranged on the top portion 11 of the shell 1 away from the base 30. Here, the notch T is circular.

[0074] In combination with FIGS. 1-3, Figure 2c and Figure 3a It can be seen that the side portion 12 and the top portion 11 can form a containing cavity P with an opening. The containing cavity P can be used to accommodate the carrier 20 and the driving assembly. The opening of the containing cavity P refers to the side of the shell 1 used to connect the base 30. The shell 1 is provided with a stop structure 2 penetrating the shell 1. The stop structure 2 can extend into the containing cavity P of the shell 1, so that the stop structure 2 can bear the impact of the carrier 20, disperse the impact stress, prevent the carrier 20 from colliding with the inner wall of the shell 1 during movement, and protect the carrier 20 and the optical devices such as lenses loaded on the carrier 20.

[0075] Referring to Figure 3a As shown in Figure 3b The shell 1 has an inner surface a1 and an outer surface a2. Here, the division of the inner surface a1 and the outer surface a2 of the shell 1 is a relative concept. Generally, it can be considered that the surface of the shell 1 on the side facing the containing cavity P is the inner surface a1, and the surface of the shell 1 on the side away from the containing cavity P is the outer surface a2.

[0076] The shell 1 is provided with a through hole A, which can penetrate the inner surface a1 and the outer surface a2. The space outside the outer surface a2 of the shell 1 and the space of the accommodating cavity P at the inner surface a1 can be communicated through the through hole A. The axis line Q of the through hole A is the extension direction of the through hole A. The shell 1 is provided with a stop structure 2, which is embedded in the through hole A and protrudes from the inner surface a1 of the shell 1, that is, the stop structure 2 can partially extend into the accommodating cavity P. When the carrier 20 accommodated in the accommodating cavity P moves relative to the base 30, the stop structure 2 can avoid direct impact between the carrier 20 and the shell 1, and protect the equipment device.

[0077] The shape of the through hole A is not limited. As shown in Figure 3c , the cross section of the through hole A perpendicular to the axis line Q can be rectangular. As shown in Figure 3d , the cross section of the through hole A perpendicular to the axis line Q is circular. Generally, the shape of the through hole A is made to be regular to facilitate the injection molding of the stop structure 2.

[0078] As shown in Figure 3e and Figure 3d , the shell 1 has a top 11 and a side 12 surrounding the edge of the top 11. Exemplarily, the top 11 is parallel to the plane where the X direction and the Y direction are located. The side 12 is perpendicular to the top 11, that is, the side 12 is perpendicular to the X direction and the Y direction, and the side 12 extends along the Z direction. The X direction and the Y direction can be regarded as the radial direction of the shell 1, and the Z direction can be regarded as the height direction of the shell 1. With the module motor 100 as the reference, the carrier 20 can move along the height direction of the shell 1 relative to the top 11.

[0079] The stop structure 2 can be arranged on the side 12 as shown in Figure 3e . The stop structure 2 protrudes from the inner surface a1 of the side 12, and the height of the stop structure 2 protruding from the inner surface a1 of the side 12 along the extension direction of the axis line Q of the through hole A is d1, which can be 0.1-0.5mm, for example, 0.25mm. Thus, the size of the stop structure 2 in the radial direction of the shell 1 can be reduced, the space occupied by the stop structure 2 can be reduced, and the occupied space of the module motor 100 can be reduced. Compared with the larger thickness of the stop wall in the prior art, the size reduction in the radial direction of the module motor 100 can be obtained.

[0080] The stop structure 2 can also be arranged on the top 11 as shown in Figure 3dAs shown, the stop structure 2 is mounted on the top 11 and protrudes from the inner surface a1 of the top 11. Along the extension direction of the axis Q of the through hole A, the height of the stop structure 2 protruding from the inner surface a1 of the side 12 is d2. Here, d2 can be 0.1-0.5mm, for example, 0.2mm. This reduces the size of the stop structure 2 in the height direction of the housing 1, reducing the space occupied by the stop structure 2, and consequently reducing the space occupied by the module motor 100. The benefit of size reduction can also be obtained in the height direction of the module motor 100.

[0081] Of course, in specific implementation, the stop structure 2 can be as follows: Figure 3e As shown, it is only installed on the side 12 of the housing 1, or it can be as follows: Figure 4 The stop structure 2 is shown only on the top 11 of the housing 1, but it can also be provided on both the side 12 and the top 11. Furthermore, the number and specific location of the stop structure 2 are not limited.

[0082] In the modular motor 100 provided in this embodiment, the stop structure 2 is injection molded. During manufacturing, liquid injection molding material is injected into the mold through the through-hole A to form the stop structure 2. Since the stop structure 2 is injection molded through the through-hole A, a smaller stop structure 2 can be injection molded as needed, without occupying a large volume of the receiving cavity P of the housing 1, which is beneficial for the miniaturization of the modular motor 100. In addition, by injection molding the stop structure 2 through the through-hole A, the stop structure 2 can be placed at any desired position, decoupling it from other component structures of the modular motor 100, which is convenient for implementation. When this modular motor 100 is applied to device modules such as camera modules, it can meet the miniaturization requirements of the device.

[0083] like Figure 5 As shown, the stop structure 2 specifically includes a connecting part 21 and a first stop part 22, which are injection-molded integral structures. The connecting part 21 is embedded in the through hole A, and the first stop part 22 protrudes from the inner surface a1 of the housing 1. Taking the inner surface a1 as the boundary and the receiving cavity P of the housing 1 as a reference, the first stop part 22 can be considered to be located within the receiving cavity P. The shape of the connecting part 21 is adapted to the shape of the through hole A, and the injection-molded connecting part 21 can be tightly combined with the through hole A, providing stable support for the first stop part 22 with the help of the housing 1.

[0084] The stop structure 2 is arranged to avoid the device structure in the shell 1 from directly impacting the inner surface a1 of the shell 1. When the carrier 20 moves, the carrier 20 can impact the first stop portion 22 of the stop structure 2, and the first stop portion 22 provides an impact bearing for the carrier 20, thereby reducing the impact stress and protecting the carrier 20 and other structures that can be carried on the carrier 20. Therefore, when the device structure impacts the first stop portion 22, the impact surface of the first stop portion 22 for bearing the impact needs to maintain a certain stability and cannot have a large structural deformation. Here, the hardness of the stop structure 2 needs to meet the requirement of Shore hardness greater than or equal to 20, and the hardness of the stop structure 2 can be 20 Shore hardness, 40 Shore hardness, 70 Shore hardness, 100 Shore hardness, etc. When the carrier 20 on one side of the inner surface a1 of the shell 1 impacts the first stop portion 22 of the stop structure 2, the first stop portion 22 can resist the pressure of the carrier 20 and prevent the carrier 20 from contacting or impacting the inner surface a1 of the shell 1.

[0085] Specifically, the material of the stop structure 2 can be any one of liquid crystal molecular polymer, thermoplastic polyurethane rubber, and thermoplastic elastomer. Alternatively, a high-hardness silica gel can also be used. The liquid crystal molecular polymer is an intermediate state polymer between solid crystal and liquid, and has high strength, high modulus, and excellent molding processing performance. The use of the liquid crystal molecular polymer to make the stop structure 2 can achieve good anti-impact effect between the shell 1 and the device. The material of the shell 1 can include any one of stainless steel and liquid crystal molecular polymer, and the hardness of the shell 1 generally needs to be higher than that of the stop structure 2 to achieve good bearing support effect.

[0086] The stop structure 2 is made of a high-hardness stop material, and the size of the first stop portion 22 in the stop structure 2 can be made large enough to achieve good stop effect. Here, the size of the first stop portion 22 refers to the size of the first stop portion 22 perpendicular to the axis Q of the through hole A. For example, the size of the first stop portion 22 can be greater than or equal to 1 mm, greater than or equal to 2 mm, greater than or equal to 3 mm, greater than or equal to 4 mm, greater than or equal to 5 mm, greater than or equal to 6 mm, greater than or equal to 7 mm, greater than or equal to 8 mm, greater than or equal to 9 mm, greater than or equal to 10 mm, greater than or equal to 11 mm, greater than or equal to 12 mm, greater than or equal to 13 mm, greater than or equal to 14 mm, greater than or equal to 15 mm, greater than or equal to 16 mm, greater than or equal to 17 mm, greater than or equal to 18 mm, greater than or equal to 19 mm, greater than or equal to 20 mm, greater than or equal to 21 mm, greater than or equal to 22 mm, greater than or equal to 23 mm, greater than or equal to 24 mm, greater than or equal to 25 mm, greater than or equal to 26 mm, greater than or equal to 27 mm, greater than or equal to 28 mm, greater than or equal to 29 mm, greater than or equal to 30 mm, greater than or equal to 31 mm, greater than or equal to 32 mm, greater than or equal to 33 mm, greater than or equal to 34 mm, greater than or equal to 35 mm, greater than or equal to 36 mm, greater than or equal to 37 mm, greater than or equal to 38 mm, greater than or equal to 39 mm, greater than or equal to 40 mm, greater than or equal to 41 mm, greater than or equal to 42 mm, greater than or equal to 43 mm, greater than or equal to 44 mm, greater than or equal to 45 mm, greater than or equal to 46 mm, greater than or equal to 47 mm, greater than or equal to 48 mm, greater than or equal to 49 mm, greater than or equal to 50 mm, greater than or equal to 51 mm, greater than or equal to 52 mm, greater than or equal to 53 mm, greater than or equal to 54 mm, greater than or equal to 55 mm, greater than or equal to 56 mm, greater than or equal to 57 mm, greater than or equal to 58 mm, greater than or equal to 59 mm, greater than or equal to 60 mm, greater than or equal to 61 mm, greater than or equal to 62 mm, greater than or equal to 63 mm, greater than or equal to 64 mm, greater than or equal to 65 mm, greater than or equal to 66 mm, greater than or equal to 67 mm, greater than or equal to 68 mm, greater than or equal to 69 mm, greater than or equal to 70 mm, greater than or equal to 71 mm, greater than or equal to 72 mm, greater than or equal to 73 mm, greater than or equal to 74 mm, greater than or equal to 75 mm, greater than or equal to 76 mm, greater than or equal to 77 mm, greater than or equal to 78 mm, greater than or equal to 79 mm, greater than or equal to 80 mm, greater than or equal to 81 mm, greater than or equal to 82 mm, greater than or equal to 83 mm, greater than or equal to 84 mm, greater than or equal to 85 mm, greater than or equal to 86 mm, greater than or equal to 87 mm, greater than or equal to 88 mm, greater than or equal to 89 mm, greater than or equal to 90 mm, greater than or equal to 91 mm, greater than or equal to 92 mm, greater than or equal to 93 mm, greater than or equal to 94 mm, greater than or equal to 95 mm, greater than or equal to 96 mm, greater than or equal to 97 mm, greater than or equal to 98 mm, greater than or equal to 99 mm, or greater than or equal to 100 mm. Figure 6As shown, the radial dimension of the through hole A is B1, with reference to the inner surface a1 provided with the stop structure 2. The radial dimension of the through hole A is the dimension of the through hole A perpendicular to the axis Q of the through hole A. Since the shape of the through hole A perpendicular to the axis Q can be circular, the radial dimension B1 of the through hole A is the diameter of the circle. The shape of the through hole A perpendicular to the axis Q can also be other shapes (for example, rectangular), and the radial dimension B1 of the through hole A can be considered as the maximum radial dimension of the through hole A. The minimum radial dimension of the first stop portion 22 perpendicular to the axis Q of the through hole A is B2. The minimum radial dimension B2 of the first stop portion 22 perpendicular to the axis Q of the through hole A is greater than the maximum radial dimension of the through hole A, so that the first stop portion 22 can cover the through hole A. That is, the first stop portion 22 with a larger size can be obtained by injection molding through the through hole A with a smaller size, and the first stop portion 22 with a larger size can provide a larger impact surface, thereby achieving a good anti-impact effect. The orthographic projection of the first stop portion 22 on the inner surface a1 covers the through hole A, the connecting portion 21 is matched with the through hole A, and the orthographic projection of the first stop portion 22 on the inner surface a1 also covers the connecting portion 21.

[0087] As shown in FIG. 2, the distance S between the edge of the orthographic projection of the first stop portion 22 on the inner surface a1 and the edge of the through hole A is greater than or equal to the diameter of the through hole A. Figure 7 As shown in FIG. 2, the distance S between the edge of the orthographic projection of the first stop portion 22 on the inner surface a1 and the edge of the through hole A is greater than or equal to the diameter of the through hole A.

[0088] In some embodiments, as shown in FIG. 2, the distance S between the edge of the orthographic projection of the first stop portion 22 on the inner surface a1 and the edge of the through hole A is greater than or equal to the diameter of the through hole A. Figure 8As shown, the stop structure 2 further comprises a second stop portion 23, which is also an injection molded integral structure with the connecting piece 21, that is, the connecting portion 21, the first stop portion 22 and the second stop portion 23 of the stop structure 2 are all injection molded integral structures obtained by injection molding. Along the extension direction of the axis Q of the through hole A, the second stop portion 23, the connecting piece 21 and the first stop portion 22 are arranged in sequence. The second stop portion 23 protrudes from the outer surface a2 of the shell 1, that is, the second stop portion 23 protrudes from the outer side of the shell 1 away from the cavity of the shell 1. When the inner surface a1 side of the shell 1 is provided with a movable portion such as the carrier 20, and the outer surface a2 side is also provided with a movable portion, the first stop portion 22 can provide an anti-impact function for the movable portion such as the carrier 20 on the inner surface a1 side, and the second stop portion 23 can provide an anti-impact function for the movable portion on the outer surface a2 side.

[0089] Possibly, as Figure 9a shown, the size of the second stop portion 23 can also be made large enough. Here, the size of the second stop portion 23 refers to the size of the first stop portion 22 perpendicular to the axis Q of the through hole A. With the outer surface a2 provided with the stop structure 2 as a reference, the orthographic projection of the outer surface a2 of the second stop portion 23 covers the through hole A. The larger size of the first stop portion 22 can provide a larger impact surface, thereby achieving good anti-impact effect. The connecting portion 21 is adapted to the through hole A, and the orthographic projection of the second stop portion 23 on the outer surface a2 also covers the connecting portion 21.

[0090] In combination with the above embodiments, the impact surface of the stop structure 2 for bearing impact needs to maintain a certain stability. In order to increase the size stability of the stop structure 2, a support structure 3 can be provided on the shell 1, which can be fixed to the shell 1 and extend into the inside of the stop structure 2. As Figure 9a shown, taking the square hole as an example, the support structure 3 is provided in the through hole A on the shell 1. The support structure 3 is covered by the stop structure 2, and therefore is shown by a dashed line. The support structure 3 is a "one-character" strip, and has a large length-diameter ratio. The two ends of the support structure 3 are respectively fixed to the inner wall of the through hole A, and the support structure 3 passes through the axis Q of the through hole A, and can divide the through hole A into two parts along the radial direction of the through hole A, that is, the through hole A is center-symmetrical about the support structure 3. After the stop structure 2 is obtained by injection molding, the support structure 3 can extend into the stop structure 2. Along Figure 9b the plane M1-M1, the shell 1 can be cut to obtain the cross-sectional structure diagram shown in Figure 9b . In Figure 10a combination, the stop structure 2 covers the support structure 3, and the support structure 3 can act as a reinforcing structure to improve the structural stability of the stop structure 2 when impacted, thereby satisfying the anti-impact property. It should be understood that the support structure 3 can be an integral structure with the shell 1.

[0091] In one embodiment, as shown in Figure 10a The support structure 3 specifically includes two support portions 31, one end of each support portion 31 is fixed to the inner wall of the through hole A, and the other end of the support portion 31 extends into the stop structure 2. The two support portions 31 are covered by the stop structure 2, shown in dashed lines. In order not to affect the structural uniformity of the stop structure 2, the two support portions 31 are centrally symmetric about the axis Q of the through hole A, that is, the two support portions 31 are rotated 180° about the axis Q of the through hole A, and the position structure of the two support portions 31 and the through hole A does not change. Along Figure 10b The shell 1 is cut along the plane M2-M2, and a cross-sectional structure schematic diagram as shown in Figure 10b In Figure 11 , the stop structure 2 covers the support structure 3, and the support structure 3 can act as a reinforcing structure to improve the structural stability of the stop structure 2 when impacted, thereby meeting the anti-impact requirement. It should be understood that the two support portions 31 can be an integral structure with the shell 1.

[0092] In order to improve the stable support of the support structure 3 to the stop structure 2, as shown in Figure 12a , the two support portions 31 can be arranged in an inclined manner. One end of each support portion 31 is fixed to the inner wall of the through hole A, and the other end extends to the accommodating cavity P on the side of the inner surface a1 of the shell 1. That is, the support portion 31 is arranged inclined to the axis Q of the through hole A. The two support portions 31 are in a "figure-eight" shape, which can provide good structural support for the stop structure 2.

[0093] When the support structure 3 has an integral structure with the shell 1, the through hole A can be formed by stamping. As shown in Figure 12a , the support structure 3 is equivalent to the edge residual structure generated when the through hole A is formed on the shell 1 by stamping, and the support structure 3 is arranged around the through hole A. The support structure 3 is covered by the stop structure 2, shown in dashed lines. Along Figure 12b The shell 1 is cut along the plane M3-M3, and a cross-sectional structure schematic diagram as shown in Figure 13 is obtained. The support structure 3 is inclined from the shell 1 to the side of the inner surface a1, and a bending portion W is formed at the free end of the support structure 3 away from the shell 1. The presence of the bending portion W can further increase the support stability of the support structure 3 to the stop structure 2, and ensure the reliability of the stop structure.

[0094] Specifically, as shown in Figure 12a , in order to facilitate the preparation of the stop structure 2, the support structure 3 in Figure 13 can be "trimmed" so that the support structure 3 has a "figure-eight" shape. At this time, the support structure 3 is equivalent to including two support portions 31, and the bending portion W is located at the free end of the support portion 31. Of course, the structure of the support portion 31 can also have other implementations, which will not be described here.

[0095] like Figure 14a As shown, two through holes A are provided on the side 12 of the housing 1, and a support structure 3 is provided in each through hole A. The support structure 3 is exemplified by a "figure-eight" structure, which provides more stable support for the stop structure 2, improving its stability under impact. Possibly, the support structure 3 may also include three, four, or even more support parts 31. These support parts 31 can be evenly distributed around the axis Q of the through hole A, thereby providing stable support for the stop structure 2 and ensuring its reliability. The shape of the support parts 31 is not limited. Figure 14b The top view of the modular motor 100 is shown; the carrier 20 is obscured by the top 11 of the housing 1 and is not shown. The modular motor 100 is cut along the N1-N1 plane to obtain... Figure 14b The diagram shows a cross-sectional view of the module motor 100. Further reference... Figure 14c Enlarged view of section C Figure 15a The stop structure 2 protrudes through the through hole A on the side 12 and extends out of the inner surface a1 of the side 12. The part of the stop structure 2 protruding out of the inner surface a1 faces the carrier 20. When the carrier 20 moves, the stop structure 20 can bear the impact during the movement of the carrier 20 and prevent the carrier 20 from directly contacting or impacting the side 12 of the housing 1.

[0096] Combination Figure 15b The front view of the module motor 100 shown is cut along the plane N2-N2 to obtain the following: Figure 15b The diagram shows a cross-sectional view of the module motor 100. Figure 15b In this configuration, the carrier 20 is disposed within the cavity enclosed by the housing 1. Further reference... Figure 15c Enlarged view of section D Figure 14b The housing 1 is provided with a support structure 3 that extends into the stop structure 2. The support structure 3 is exemplified by a "figure-eight" structure. The support structure 3 can provide more stable support for the stop structure 2 and improve the stability of the stop structure 2 when it is impacted.

[0097] In some embodiments, combined with Figure 15b and Figure 16As shown, a spring 40 is also provided between the carrier 20 and the housing 1. The spring 40 can provide a restoring force to the carrier 20 when it moves. The spring 40 is connected to the side 12 of the housing 1, and the connection is located at the four corners of the side 12. Since the position of the stop structure 2 is not restricted and can be set at any position of the housing 1, the spring 40 can correspond to the stop structure 2 along the height direction of the housing 1. That is, when the top 11 is taken as a reference, the orthographic projection of the spring 40 on the top 11 and the orthographic projection of the stop structure 2 on the top 11 can overlap. It should be noted that the housing 1 and the base 30 are both fixed parts of the module motor 100, therefore, the spring 40 can also be set between the carrier 20 and the fixed base 30.

[0098] Based on the aforementioned module motor 100, this application embodiment also provides a camera module 200, such as... Figure 17a As shown, the camera module 200 includes a lens 50 and the aforementioned module motor 100.

[0099] Combination Figure 17b The image shows a top view of the camera module 200, with the lens 50 mounted on the carrier 20 of the module motor 100. The camera module 200 is cut along the N3-N3 plane to obtain... Figure 18 The diagram shows a cross-sectional view of the camera module 200. When the carrier 20 moves relative to the base 30 and the module motor 100 moves along the height direction of the module motor 100, the lens 50 can also move accordingly to adjust the focal length.

[0100] Based on the aforementioned camera module 200, this application embodiment also provides an electronic device, such as... Figure 19a As shown, the electronic device can specifically be a smartphone, tablet, or other device with camera functionality. The aforementioned camera module 200 is installed on the main body 300 of the electronic device. Images are acquired through the camera module 200. During image acquisition, the focal length of the lens 50 can be adjusted via the module motor 100 to meet the recording requirements. The structure of the camera module 200 and the module motor 100 can be referred to in the above embodiment, and will not be described exemplarily here.

[0101] Based on the structure of the housing 1 in the modular motor 100 described above, this application embodiment also provides a method for manufacturing the housing 1, which is used to manufacture the housing 1 in the modular motor 100 described above. The housing 1 has a receiving cavity P. For example... Figure 2b As shown, the preparation method includes the following steps:

[0102] S1: Drill holes in the shell to form through holes;

[0103] Combination Figure 2c , Figure 3a as well as Figure 3dThe structure of the shell 1 shown can be punched to form a through hole at any desired position of the shell 1. When the structure of the shell 1 is as shown in Figure 3e and Figure 4 , having a top 11 and a side 12 surrounding the edge of the top 11, the top 11 or the side 12 can be punched.

[0104] S2: Form a stop structure extending into the receiving cavity by injection molding a through hole.

[0105] The stop structure 2 can be prepared by in-mold injection molding. When the stop structure 2 has Figure 5 or Figure 7 the connecting portion 21 and the first stop portion 22 as shown, the through hole A can be used as a gate during injection molding, and the through hole A can be used as a gate during injection molding, i.e. the liquid material for injection molding can pass through the through hole A to form the first stop portion on the inner surface a1 side of the shell 1. When the stop structure 2 has Figure 8 or Figure 19b the connecting portion 21, the first stop portion 22 and the second stop portion 23 as shown, the second stop portion 23 can be directly injected on the outer surface a2 side, and the first stop portion 22 can deliver the liquid material to the inner surface a1 side for injection molding.

[0106] Specifically, as shown in Figure 9a , step S2 can include the following steps:

[0107] S21: Provide a mold having an inner cavity; the inner cavity of the mold is adapted to the shape of the stop structure 2.

[0108] S22: Place the shell in the mold so that the through hole communicates with the inner cavity; the through hole A on the shell 1 can be used as a gate or flow channel for injection molding process.

[0109] S23: Inject liquid material into the inner cavity; wherein the liquid material can be any one of liquid crystal molecular polymer, thermoplastic polyurethane rubber, thermoplastic elastomer, or liquid silicone.

[0110] S24: The liquid material cools to form a stop structure.

[0111] When the module motor 100 is further provided with a support structure 3 as shown in Figure 10a , Figure 11 , Figure 12a and Figure 19c , after step S1 and before step S2, the preparation method can further include the following steps as shown in Figure 9a .

[0112] S3: Form a support structure in the through hole.

[0113] Figure 10a In some embodiments, the support structure 3 is in the shape of a "straight line", and the two ends of the support structure 3 are fixed to the inner wall of the through hole A, and the support structure 3 vertically penetrates the axis Q of the through hole A. Figure 11 In some embodiments, the support structure 3 includes two support portions 31, and the two support portions 31 are centrally symmetric about the axis Q of the through hole A. One end of each support portion 31 is fixed to the inner wall of the through hole A, and the other end of each support portion 31 extends into the through hole A. Figure 12a In some embodiments, the two support portions 31 are arranged obliquely relative to the inner wall of the through hole A. Figure 12b In some embodiments, the support structure 3 is formed on the inner wall of the through hole A and is in the shape of a ring. In combination with Figure 13 and ​ The free end of the support structure 3 can also form a bending portion W.

[0114] It should be understood that the presence of the support structure 3 can improve the structural reliability of the stop structure 2, maintain the stability of the impact surface when the stop structure 2 is impacted by the moving carrier 20, and thus effectively reduce the impact stress.

[0115] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A modular motor characterized by, The application relates to a camera lens drive device. The device comprises a base, a carrier, a driving assembly and a shell. The shell forms a containing cavity with an opening, and the base is fixed to one side of the opening of the shell. The carrier and the driving assembly are arranged in the containing cavity, and the driving assembly is connected between the carrier and the base and used for driving the carrier to move relative to the base in a direction perpendicular to the base. The shell is provided with a through hole and a stop structure, the stop structure comprises a connecting part and a first stop part, the connecting part and the first stop part are integrally formed by injection molding, the connecting part is embedded in the through hole, and the first stop part extends into the containing cavity to receive the impact of the carrier.

2. The modular motor of claim 1, wherein, The hardness of the stop structure is greater than or equal to 20 Shore.

3. The modular motor of claim 2, wherein, The carrier is used for carrying a lens, and the top of the shell away from the base is provided with a notch for the lens to extend out of the shell.

4. The modular motor of claim 3, wherein, The first stop part is projected on the shell to cover the through hole.

5. The modular motor of any one of claims 1-4, wherein, In a direction perpendicular to the axis of the through hole, the distance between the edge of the first stop part and the edge of the through hole is greater than or equal to the maximum radial dimension of the through hole.

6. The modular motor of claim 5, wherein, In a direction perpendicular to the axis of the through hole, the distance between the edge of the first stop part and the edge of the through hole is at least 2 times the maximum radial dimension of the through hole.

7. The modular motor of any one of claims 1-6, wherein, The stop structure further comprises a second stop part, the second stop part and the connecting part are integrally formed by injection molding, the second stop part extends out of the shell, and the second stop part is used for receiving external impact.

8. The modular motor of claim 7, wherein, The second stop part is projected on the shell to cover the through hole.

9. The modular motor of claim 8, wherein, The shell is further provided with a support structure, and the support structure extends into the stop structure.

10. The modular motor of claim 9, wherein, The two ends of the support structure are fixed to the inner wall of the through hole, and the support structure vertically penetrates the axis of the through hole.

11. A modular motor as claimed in claim 9 or 10, wherein the rotor is formed from a plurality of rotor segments. The support structure comprises two support parts, the two support parts are respectively fixed to the inner wall of the through hole, and the two support parts are centrally symmetric about the axis of the through hole.

12. The modular motor of any one of claims 1-11, wherein, One end of each support part is fixed to the inner wall, and the other end extends to the containing cavity. The free end of each support part is formed with a bending part.

13. The modular motor of claim 12, wherein, The shell comprises a top and a side part, the side part is arranged around the edge of the top to form the containing cavity.

14. A modular motor as claimed in claim 12 or 13, wherein the rotor is formed from a plurality of rotor segments. The stop structure is located on the top and / or the side part.

15. The modular motor of any one of claims 1-14, wherein, The height of the stop structure extending into the containing cavity is 0.1-0.5 mm.

16. The modular motor of any one of claims 1-15, wherein, The height of the stop structure extending into the containing cavity is 0.1-0.5 mm.

17. The modular motor of any one of claims 1-16, wherein, The material of the stop structure comprises any one of liquid crystal molecular polymer, thermoplastic polyurethane rubber and thermoplastic elastomer. The material of the shell comprises stainless steel and liquid crystal molecular polymer. The driving assembly comprises a driving magnet and a driving coil, the driving magnet is fixed to the bottom of the carrier, the driving coil is fixed to the base, and the driving coil corresponds to the driving magnet.

18. The modular motor of claim 17, wherein, An elastic structure is arranged between the module motor and the carrier; The stop structure and the elastic structure are positionally corresponding along the moving direction of the carrier.

19. An image capture module, comprising: A lens is fixed to the carrier.

20. An electronic device, comprising: A device body and a camera module mounted on the device body, the camera module being as claimed in claim 19.

21. A method of producing a case, characterized by, A method for manufacturing the housing in the module motor as claimed in any one of claims 1-18, the housing having a receiving cavity; comprising: Punching a through hole on the housing, the through hole penetrating through the housing; Forming a stop structure through the through hole, the stop structure extending into the receiving cavity of the housing.

22. The production method according to claim 21, wherein After the step of punching a through hole on the housing to form a through hole, before the step of forming a stop structure through the through hole, the method further comprises: Forming a support structure in the through hole.

23. The production method according to claim 21 or 22, wherein The step of forming a stop structure through the through hole, the stop structure extending into the receiving cavity of the housing, comprises: Providing a mold, the mold having an inner cavity; Placing the housing in the mold, the through hole being in communication with the inner cavity; Injecting a liquid material into the inner cavity; The liquid material cools to form the stop structure.

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