Camera module

Abstract

The utility model relates to the technical field of camera shooting equipment, and discloses a camera shooting module, which comprises a base assembly, a shell, a lens assembly, a bearing piece, an image sensor and a driving module, and is characterized in that the base assembly comprises a base and a fixing piece, and the fixing piece is integrally arranged on the base and is positioned on one side of the base; an accommodating cavity is formed between the shell and the base assembly; the lens assembly is fixed in the central opening of the shell; the bearing part is arranged in the accommodating cavity in a sliding manner; the image sensor is fixed on the bearing part; the driving module comprises a magnet assembly and a coil assembly; the bearing piece is provided with a first sliding groove, the fixing piece is provided with a second sliding groove, and a guiding piece is installed between the first sliding groove and the second sliding groove. A first limiting piece is arranged at the upper end of the first sliding groove, and a second limiting piece is arranged at the lower end of the second sliding groove and used for preventing the guiding piece from sliding out. According to the utility model, the assembly steps and assembly errors can be reduced, and the perpendicularity between the fixing piece and the base is ensured; and the bearing part can be conveniently and smoothly installed, the assembling difficulty is reduced, and the product robustness is improved.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment technology, and in particular to a camera module. Background Technology

[0002] Voice coil motors (VCMs) have advantages such as simple structure, small size, low energy consumption, high acceleration, fast response speed, accurate displacement and low price. Therefore, for the autofocus function of camera devices, voice coil motors are still a cost-effective solution.

[0003] Current camera modules typically include a base assembly, housing, carrier, lens assembly, and voice coil motor drive module. The base assembly comprises a base and a mounting component, which are separate designs. The base provides the lower limit of the carrier's travel, while the mounting component carries the coil, circuit board, etc., and has an upper limit on the carrier's travel at its top. This necessitates an additional assembly step between the base and the mounting component when assembling the camera module. Furthermore, the verticality of the mounting component is unstable during assembly, and the location of the upper limit on the mounting component also affects the assembly of the carrier.

[0004] Therefore, there is an urgent need for a camera module to solve the above-mentioned technical problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a camera module with fewer components, better structural strength, reduced assembly steps and assembly errors, and ensured perpendicularity between the fixing parts and the base; it also facilitates the smooth installation of the load-bearing parts, reduces assembly difficulty, and increases product stability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A camera module, comprising:

[0008] A base assembly, comprising a base and a fixing member, wherein the fixing member is integrally disposed on the base and located on one side of the base;

[0009] The outer shell is connected to the base assembly, and a receiving cavity is formed between the outer shell and the base assembly. The outer shell is provided with a central opening.

[0010] The lens assembly is fixed inside the central opening of the housing;

[0011] The carrier is slidably disposed within the accommodating cavity along the first direction;

[0012] An image sensor is fixed to the side of the carrier near the base assembly, and the lens assembly is coaxially arranged with the image sensor;

[0013] The driving module includes a magnet assembly and a coil assembly. The magnet assembly is disposed on one side of the carrier. The coil assembly is fixedly disposed in the accommodating cavity and is disposed opposite to the magnet assembly.

[0014] The support member has a first sliding groove on the side near the fixing member, and the fixing member has a second sliding groove on the side near the support member. A guide member is installed between the first sliding groove and the second sliding groove to allow the support member to slide in connection with the fixing member. A first limiting member is provided at the upper end of the first sliding groove, and a second limiting member is provided at the lower end of the second sliding groove to prevent the guide member from sliding out between the first sliding groove and the second sliding groove.

[0015] In some possible implementations, the housing is fixed to the fastener by adhesive bonding.

[0016] In some possible implementations, the fastener has a recessed structure on the side of its surface away from the carrier for applying adhesive to bond and fix it to the inner wall of the housing.

[0017] In some possible implementations, the indentation structure includes a plurality of grooves extending in a horizontal direction.

[0018] In some possible implementations, the base includes a side frame extending around the periphery of the housing and a bottom frame having a mounting opening, the fastener being integrally disposed within the bottom frame; the base also includes a limiting block connected to the inner side of the bottom frame and extending toward the interior of the mounting opening, the bottom surface of the support member contacting the limiting block.

[0019] In some possible implementations, the inner side of the bottom frame is provided with three limiting blocks, one of which is located on the side opposite to the fixing member; the other two limiting blocks are located on both sides of the bottom frame, and the other two limiting blocks are connected to the two sides of the fixing member in a corresponding manner.

[0020] In some possible implementations, the coil assembly includes a circuit board, a coil support plate, and a coil arranged sequentially. The coil is fixed to the coil support plate. A first guide wire extends from the inner side of the coil, and a second guide wire extends from the outer side. The coil support plate has a first receiving groove extending through the edge of the coil support plate on the side facing the coil. The first guide wire passes through the first receiving groove and is electrically connected to the circuit board.

[0021] In some possible implementations, the outer dimensions of the coil support plate are larger than the outer dimensions of the coil; the coil has a first central hole, and the coil support plate has a second central hole, the size of which is smaller than the size of the first central hole.

[0022] In some possible implementations, the coil support plate is made of a soft magnetic metal material, and the shape of the coil support plate is a centrally symmetrical figure; the side of the coil support plate facing the coil is also provided with a second receiving groove, and the first receiving groove and the second receiving groove are symmetrically arranged about the center of the coil support plate or rotated 180 degrees about the axis of the second central hole.

[0023] In some possible implementations, the depths of the first and second receiving grooves are 20% to 40% of the thickness of the coil support plate; and / or,

[0024] The widths of the first and second receiving grooves are 5 to 10 times the diameter of the first guide wire; and / or,

[0025] Both the first receiving groove and the second receiving groove are arc-shaped, and are located diagonally opposite each other on the coil support plate.

[0026] In some possible implementations, the carrier has a first mounting groove on the side near the fixing member, and the magnet assembly is mounted in the first mounting groove; the fixing member has a second mounting groove on the side near the carrier, and the coil assembly is mounted in the second mounting groove; and / or,

[0027] The carrier includes a movable through-hole that extends longitudinally through the carrier. The image sensor is located below the movable through-hole, and the lens assembly is located above the movable through-hole, with the outer diameter of the lens assembly being smaller than the diameter of the movable through-hole; and / or,

[0028] The coil assembly further includes a magnetic sensor electrically connected to the circuit board; and / or,

[0029] The magnet assembly includes a shielding plate and at least one magnet, each of which is fixed to the shielding plate.

[0030] In some possible implementations, the drive module further includes a base plate and a driver circuit, the base plate being fixed to the base, the driver circuit being mounted on the base plate, and the driver circuit being electrically coupled to the image sensor and the coil assembly, respectively.

[0031] The beneficial effects of this utility model are:

[0032] The base assembly of this utility model adopts an integrated structure, so that the fixing component is integrally set on the base. This not only improves the structural strength and reduces the number of parts, which helps to save costs, but also eliminates the assembly steps between the base and the fixing component, reduces the assembly difficulty, reduces assembly errors, improves the positioning accuracy between the load-bearing component and the shell, and avoids uncertainties in the assembly process. In addition, it ensures the perpendicularity between the fixing component and the base, avoiding the unstable perpendicularity of the fixing component and the base assembly when using a split structure.

[0033] This invention features a first sliding groove on the side of the carrier component near the fixing component, and a second sliding groove on the side of the fixing component near the carrier component. A guide component is installed between the first and second sliding grooves to achieve a sliding connection between the carrier component and the fixing component. Furthermore, this invention provides a first limiting component at the upper end of the first sliding groove on the carrier component and a second limiting component at the lower end of the second sliding groove, thereby preventing the guide component from sliding out between the first and second sliding grooves. This design avoids interference with the assembly of the carrier component, facilitates smooth installation of the carrier component, reduces assembly difficulty, and increases product stability. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the camera module provided in Embodiment 1 of this utility model;

[0035] Figure 2 This is a schematic diagram of the camera module provided in Embodiment 1 of this utility model, after removing the outer shell and lens assembly;

[0036] Figure 3 This is an exploded view of the camera module provided in Embodiment 1 of this utility model;

[0037] Figure 4 This is an exploded view of the carrier and magnet assembly provided in Embodiment 1 of this utility model;

[0038] Figure 5 This is an exploded view of the base assembly, coil assembly, and guide member provided in Embodiment 1 of this utility model;

[0039] Figure 6 This is a schematic diagram of the first angle structure of the base assembly provided in Embodiment 1 of this utility model;

[0040] Figure 7 This is a schematic diagram of the second angle structure of the base assembly provided in Embodiment 1 of this utility model;

[0041] Figure 8 This is a schematic diagram of the structure of the support member provided in Embodiment 1 of this utility model;

[0042] Figure 9This is a schematic diagram of the first angle structure of the coil and coil support plate provided in Embodiment 1 of this utility model;

[0043] Figure 10 This is a schematic diagram of the second angle structure of the coil and coil support plate provided in Embodiment 1 of this utility model;

[0044] Figure 11 This is a schematic diagram of the coil structure provided in Embodiment 1 of this utility model;

[0045] Figure 12 This is a schematic diagram of the coil support plate provided in Embodiment 1 of this utility model;

[0046] Figure 13 This is a schematic diagram of the assembly of the support member and the metal cover provided in Embodiment 2 of this utility model;

[0047] Figure 14 This is an exploded view of the structure of the support member and the metal cover provided in Embodiment 2 of this utility model;

[0048] Figure 15 This is a schematic flowchart of the molding process provided in Embodiment 2 of this utility model;

[0049] Figure 16 This is a schematic diagram of the structure of a metal plate with a preset shape provided in Embodiment 2 of this utility model;

[0050] Figure 17 This is a schematic diagram of the metal plate bending and forming structure provided in Embodiment 2 of this utility model.

[0051] In the picture:

[0052] 1. Base assembly; 11. Base; 111. Side frame; 112. Bottom frame; 1121. Mounting opening; 113. Limiting block; 12. Fixing member; 121. Second slide groove; 1212. Second limiting member; 122. Second mounting groove; 123. Indentation structure; 13. Image sensor; 14. Driver circuit; 15. Base plate; 2. Bearing member; 21. First slide groove; 212. First limiting member; 22. First mounting groove; 23. Moving through hole; 24. Anti-collision block; 25. Boss; 3. Magnet assembly; 31. Shielding plate; 32. Magnet; 4. Coil Components; 41. Circuit board; 42. Coil support plate; 421. First receiving groove; 4211. First extension section; 4212. Second extension section; 4213. Arc-shaped connecting section; 422. Second receiving groove; 423. Second center hole; 43. Coil; 431. First guide wire; 432. Second guide wire; 433. First center hole; 44. Magnetic sensor; 5. Housing; 51. Center opening; 6. Guide component; 7. Lens assembly; 8. Metal cover; 81. Receiving groove; 82. First sidewall; 83. Elongated hole; 84. Reinforcing hole; 85. Notch. Detailed Implementation

[0053] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0054] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this utility model, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0057] This utility model provides a camera module that can be applied to electronic products, and achieves automatic focusing or optical image stabilization of the lens through the drive of a voice coil motor.

[0058] Example 1

[0059] like Figures 1 to 12 As shown, this embodiment provides a camera module, including a base assembly 1, a carrier 2, a housing 5, a lens assembly 7, an image sensor 13, and a driving module. The base assembly 1 includes a base 11 and a fixing member 12, which is integrally disposed on the base 11 and located on one side of the base 11. Preferably, the fixing member 12 is perpendicular to the base 11. The housing 5 is connected to the base 11, forming a receiving cavity between the housing 5 and the base assembly 1. The housing 5 has a central opening 51, the size of which is adapted to the size of the lens assembly 7, and the lens assembly 7 is fixed within the central opening 51. The carrier 2 is slidably disposed within the receiving cavity along a first direction. The first direction is specifically the optical axis direction of the lens assembly 7. The image sensor 13 is located within the receiving cavity and fixed to the side of the carrier 2 near the base 11. The lens assembly 7 and the image sensor 13 are coaxially disposed. The carrier 2 can move the image sensor 13 within the receiving cavity along the optical axis direction, changing the distance between the image sensor 13 and the lens assembly 7, thereby adjusting the lens focus. Image sensor 13 can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) sensor. The image projected onto image sensor 13 can be captured, stored, and / or presented to the user. Furthermore, the carrier 2 has an annular structure with a movable through-hole 23 at its center. The movable through-hole 23 extends longitudinally through the carrier 2. Image sensor 13 is located below the movable through-hole 23, and lens assembly 7 is located above the movable through-hole 23. This allows light to pass through lens assembly 7 and then through the movable through-hole 23 to reach image sensor 13, thus obtaining an image. Moreover, the outer diameter of lens assembly 7 is smaller than the aperture of movable through-hole 23, allowing lens assembly 7 to smoothly pass through movable through-hole 23 when carrier 2 moves with image sensor 13.

[0060] The base assembly 1 in this embodiment adopts an integrated structure and is manufactured through an integrated molding process. This not only improves structural strength and reduces the number of parts, thus saving costs, but also eliminates the assembly steps between the base 11 and the fixing member 12, reducing assembly difficulty, minimizing assembly errors, improving the positioning accuracy between the bearing member 2 and the outer shell 5, and avoiding uncertainties during the assembly process. In addition, it ensures the perpendicularity between the fixing member 12 and the base 11, avoiding the unstable perpendicularity of the fixing member 12 and the base 11 when using a split structure, thus increasing the product's robustness.

[0061] In this embodiment, by directly fixing the lens assembly 7 within the central opening 51 of the housing 5, light can directly pass through the lens assembly 7 to reach the image sensor 13, ensuring that the normal passage of light is not obstructed under any circumstances. By fixing the housing 5 to the lens assembly 7 first, during assembly, only the coaxiality of the optical axis between the image sensor 13 and the lens assembly 7 needs to be ensured, thus guaranteeing assembly accuracy and facilitating optimization of the assembly process. Specifically, the lens assembly 7 may include one or more lenses, which can interact to focus light onto the image sensor 13.

[0062] This embodiment uses a driving module to drive the image sensor 13. The driving module includes a magnet assembly 3 and a coil assembly 4. The magnet assembly 3 is disposed on the side of the carrier 2 near the fixing member 12, and the coil assembly 4 is disposed on the side of the fixing member 12 near the carrier 2, with the coil assembly 4 facing the magnet assembly 3. Due to the close proximity between the magnet assembly 3 and the coil assembly 4, the coil assembly 4 can be excited by an electric current to generate a magnetic field that interacts with the magnetic field of the magnet assembly 3. The attractive or repulsive force between the magnetic fields drives the carrier 2 and the image sensor 13 to move upward or downward along the optical axis within the accommodating cavity, thereby adjusting the distance between the image sensor 13 and the lens assembly 7 and achieving the function of automatic focusing.

[0063] The drive module in this embodiment also includes a base plate 15 and a driver circuit 14. The base plate 15 is fixed below the base 11, and the driver circuit 14 is mounted on the base plate 15. The driver circuit 14 is electrically coupled to the image sensor 13 and the coil assembly 4, respectively. The driver circuit 14, for example, a driver IC, supplies power to the coil assembly 4 to excite the coil assembly 4 and generate a second magnetic field that interacts with the magnetic field of the magnet assembly 3. The driver IC can excite the coil assembly 4 in response to a control signal provided to the driver IC from an external controller, such as a microprocessor or other data processing device. In some embodiments, the driver IC can adjust the magnetic field emitted from the coil assembly 4 to drive the carrier 2 to move up or down to a precise position, for example, by reversing the direction of the current supplied to the coil assembly 4 (thus reversing the polarity of the magnetic field generated from the coil assembly 4) and adjusting the effective strength of the magnetic field (e.g., using pulse width modulation) to adjust the amount of attractive or repulsive force between the magnet assembly 3 and the coil assembly 4, thereby causing the image sensor 13 to move up and down via the carrier 2 by the magnet assembly 3. The image sensor 13 can transmit the detected image information back to the control module of the camera device, etc., via the driver circuit 14. Furthermore, the driver circuit 14 also has a flexible function, which can help the image sensor 13 reset after movement, and at the same time make the image sensor 13 more stable when moving up and down.

[0064] Optionally, a first groove 21 is provided on the side of the carrier 2 opposite to the fixing member 12, and a second groove 121 is provided on the side of the fixing member 12 opposite to the carrier 2. Both the first groove 21 and the second groove 121 extend along the optical axis of the lens assembly 7. A guide member 6 is installed between the first groove 21 and the second groove 121, thereby allowing the carrier 2 to slide relative to the fixing member 12. This arrangement increases the smoothness and accuracy of the movement of the carrier 2 along the optical axis and reduces frictional resistance. Specifically, the guide member 6 can be a plurality of ball bearings or a guide post extending along the optical axis, both of which can play a good guiding role. Preferably, in this embodiment, the guide member 6 uses ball bearings for guidance.

[0065] Since the base assembly 1 in this embodiment is an integral structure, the carrier 2 needs to be assembled onto the base assembly 1 from above. If a limiting member is provided at the upper end of the second slide groove 121 of the fixing member 12, it will interfere with the assembly of the carrier 2 and affect its assembly. Therefore, in this embodiment, a first limiting member 212 is provided at the upper end of the first slide groove 21 of the carrier 2, and a second limiting member 1212 is provided at the lower end of the second slide groove 121, thereby preventing the guide member 6 from sliding out between the first slide groove 21 and the second slide groove 121. This arrangement avoids interference with the assembly of the carrier 2, facilitates the smooth installation of the carrier 2, reduces the assembly difficulty, and increases the product's stability.

[0066] In this embodiment, the outer casing 5 is a shell structure with an opening on the lower side. The outer casing 5 is fastened to the base 11. The carrier 2, the fixing member 12, the image sensor 13, the magnet assembly 3, and the coil assembly 4 are all housed within the accommodating cavity, thus providing good protection for the internal components through the outer casing 5. Preferably, the outer casing 5 is made of metal, and its shape is a quadrilateral shell with an open lower end. Specifically, it can be manufactured from metal material through processes such as punching and bending. The metal outer casing 5 can protect the camera module from electromagnetic interference (EMI) that may occur in the environment.

[0067] Preferably, in this embodiment, the outer shell 5 and the fastener 12 are fixed by adhesive bonding, which is simple to assemble and reliable in connection. In the prior art, the surface of the fastener 12 is usually smooth, which makes it difficult for adhesive to adhere to the surface of the fastener 12, thus affecting the bonding effect between the outer shell 5 and the fastener 12. To solve the above problem, this embodiment provides a recessed structure 123 on the surface of the fastener 12 away from the support member 2 (i.e., the outer surface). This allows the adhesive to remain and adhere within the recessed structure 123 when adhesive is applied to the outer surface of the fastener 12, thereby achieving reliable bonding between the outer surface of the fastener 12 and the inner wall of the outer shell 5.

[0068] Specifically, the aforementioned recessed structure 123 includes multiple elongated grooves, each extending horizontally, which allows the adhesive to adhere better to the outer surface of the fastener 12. Furthermore, the multiple grooves are evenly arranged in an array on the outer surface of the fastener 12 to increase the uniformity of adhesion to the housing 5. In this embodiment, the adhesive is preferably glue.

[0069] The base 11 in this embodiment includes a bottom frame 112 and side frames 111 disposed on the bottom frame 112. The fastener 12 is integrally disposed within the bottom frame 112. The bottom surface of the housing 5 can be glued to the bottom frame 112, and the side frames 111 surround the periphery of the housing 5. The connection method between the housing 5 and the base 11 makes the connection more secure; at the same time, the base 11 can provide a more accurate installation position for the housing 5, so that the lens assembly 7 on the housing 5 can quickly achieve optical axis coaxiality with the image sensor 13. The bottom frame 112 has a mounting opening 1121 in the middle position. The size of the mounting opening 1121 is smaller than the inner size of the side frame 111, so that a certain width of the bottom frame 112 can be exposed to support the housing 5, reducing manufacturing difficulty and increasing product stability; and the mounting opening 1121 allows the coil assembly 4 to be electrically connected to the driver circuit 14.

[0070] The base 11 also includes a limiting block 113. One end of the limiting block 113 is connected to the inner side of the bottom frame 112, and the other end extends toward the interior of the mounting opening 1121. The limiting block 113 is used to receive the carrier 2 and prevent the carrier 2 from moving out of the accommodating cavity. The limiting block 113 can restrict the downward movement of the carrier 2. When the carrier 2 moves to the lowest position, the bottom surface of the carrier 2 abuts against the upper surface of the limiting block 113.

[0071] Optionally, the upper surface of the limiting block 113 can be higher than the upper surface of the bottom frame 112. Since the area of ​​the limiting block 113 is small, its flatness is easy to control, so that when the carrier 2 contacts the limiting block 113, the image sensor 13 can still maintain the optical axis coaxial with the lens assembly 7. Moreover, the above arrangement can also prevent the glue from being squeezed to the upper surface of the limiting block 113 when the housing 5 is bonded to the base 11, thus affecting the movement of the carrier 2.

[0072] In the prior art, the limiting block 113 is only connected to the inner side of the bottom frame 112 and is not fixed to other components. The limiting block 113 is separated from the fixing member 12 by a certain distance. The area of ​​the limiting block 113 is small, which makes it easy for the limiting block 113 to bend or even break when the bearing member 2 moves downward and hits the limiting block 113.

[0073] To address the aforementioned issues, in this embodiment, three limiting blocks 113 are provided on the inner side of the bottom frame 112. One limiting block 113 is located on the side opposite to the fixing member 12; the other two limiting blocks 113 are symmetrically arranged on the two inner sides of the bottom frame 112, and these two limiting blocks 113 extend one-to-one to connect with the two sides of the fixing member 12. The arrangement of the three limiting blocks 113 can improve the balance of the impact force of the bearing member 2 on the limiting blocks 113 and increase the support stability of the bearing member 2. The two limiting blocks 113 located on both sides are connected to the fixing member 12, which can increase the structural strength of the limiting blocks 113. The length of the limiting blocks 113 on both sides is also extended to a certain extent, thereby increasing the area of ​​the limiting blocks 113, further improving the structural stability and bending resistance of the limiting blocks 113, and preventing the limiting blocks 113 from bending or breaking due to the impact of the bearing member 2.

[0074] Further, a first mounting groove 22 is provided on the side of the support member 2 facing the fixing member 12, and the magnet assembly 3 is installed in the first mounting groove 22. Optionally, the magnet assembly 3 includes a shielding plate 31 and at least one magnet 32. Each magnet 32 ​​is fixed to the shielding plate 31 by means of bonding or other methods, and the magnets 32 are combined to form a magnet surface facing the coil assembly 4. Optionally, in this embodiment, a single magnet 32 ​​is used, which has a magnet surface facing the coil assembly 4; a second mounting groove 122 is provided on the side of the fixing member 12 facing the support member 2, and the coil assembly 4 is installed in the second mounting groove 122, with the coil assembly 4 and the magnet assembly 3 positioned opposite each other.

[0075] The coil assembly 4 in this embodiment includes a circuit board 41, a coil support plate 42, a coil 43, and a magnetic sensor 44. The circuit board 41, the coil support plate 42, and the coil 43 are sequentially mounted in the second mounting groove 122 of the fixing member 12 from the distance away from the magnet assembly 3 to the distance closer to the magnet assembly 3. The coil 43 is fixed (e.g., glued) to the coil support plate 42 and electrically connected to the circuit board 41. The circuit board 41 provides control signals and drive current to the coil 43. The magnetic sensor 44 is located in the middle of the coil 43 and is electrically connected to the circuit board 41. The magnetic sensor 44 is used to sense changes in the magnetic field. The circuit board 41 in this embodiment can be a flexible circuit board, a rigid circuit board, or a flexible-rigid hybrid circuit board. When the circuit board 41 is a flexible circuit board, a reinforcing plate can also be provided to increase the strength of the flexible circuit board.

[0076] The coil 43 is typically made of copper-clad wire. After winding, a first guide wire 431 extends from its inner side and a second guide wire 432 extends from its outer side. Both the first guide wire 431 and the second guide wire 432 are electrically connected to the circuit board 41. When assembling the coil assembly 4, the first guide wire 431 located inside the coil 43 needs to extend laterally outward, thus clamping the first guide wire 431 between the end face of the coil 43 and the coil support plate 42. This can cause interference between the first guide wire 431 and the coil support plate 42, resulting in excessive compression of the first guide wire 431, or even breaking the first guide wire 431, thereby affecting the normal use of the camera module.

[0077] To solve the above problems, in this embodiment, the coil support plate 42 has a first receiving groove 421 that penetrates the edge of the coil support plate 42 on the side facing the coil 43, so as to accommodate the first guide wire 431 of the coil 43 extending laterally from the inside. After the first guide wire 431 passes through the first receiving groove 421, it is electrically connected to the circuit board 41. This avoids interference between the first guide wire 431 and the coil support plate 42, greatly reduces the risk of the first guide wire 431 being squeezed or even broken, and ensures the reliability of the camera module.

[0078] In this embodiment, the outer shape of the coil support plate 42 is the same as that of the coil 43, and the outer dimension of the coil support plate 42 is larger than that of the coil 43. The coil 43 is wound with a first central hole 433, and the coil support plate 42 has a second central hole 423, the size of which is smaller than that of the first central hole 433. This arrangement allows the coil 43 to be completely accommodated on the coil support plate 42, resulting in a compact structure and reliable use.

[0079] In this embodiment, the coil support plate 42 is made of a soft magnetic metal material, which has the characteristics of low coercivity and high permeability, and is easy to magnetize and demagnetize. Specifically, the coil support plate 42 can be made of iron-silicon alloy, soft magnetic ferrite, etc. When the magnet assembly 3, the carrier 2, and the image sensor 13 move away from their initial positions along the optical axis, there is a certain restoring force between the magnet assembly 3 and the coil support plate 42, which can return the magnet assembly 3, the carrier 2, and the image sensor 13 to their initial positions. To ensure the accuracy of the resetting of the magnet assembly 3, the carrier 2, and the image sensor 13, in this embodiment, the shape of the coil support plate 42 is preferably a centrally symmetrical figure, so that the magnetic force acting on the magnet assembly 3 is symmetrical. For example, the coil support plate 42 can be circular, elliptical, rectangular, etc. Further, a second receiving groove 422 is also provided on the side of the coil support plate 42 facing the coil 43, and the second receiving groove 422 has the same structure as the first receiving groove 421. The second receiving groove 422 and the first receiving groove 421 are symmetrically arranged about the center of the coil support plate 42, or the second receiving groove 422 and the first receiving groove 421 are rotated 180 degrees about the axis of the second central hole 423. This further ensures the symmetrical counterweight of the coil support plate 42, makes the magnetic force on the magnet assembly 3 symmetrical, and increases the stability and accuracy of the movement of the magnet assembly 3, the carrier 2 and the image sensor 13. At the same time, the setting of the second receiving groove 422 also helps to reduce the weight of the product.

[0080] The thickness of the coil support plate 42 affects the magnitude of the Lorentz force on the magnet assembly 3. Specifically, the greater the thickness of the coil support plate 42, the greater the Lorentz force on the magnet assembly 3. To ensure sufficient driving force for the magnet assembly 3, the thickness of the coil support plate 42 should not be significantly reduced when fabricating the first receiving groove 421 and the second receiving groove 422. In this embodiment, the depth of the first receiving groove 421 and the second receiving groove 422 is 20% to 40% of the thickness of the coil support plate 42. This provides adequate accommodating space for the first guide wire 431 while minimizing magnetic force loss. Preferably, the first receiving groove 421 and the second receiving groove 422 in this embodiment are manufactured by stamping. For ease of processing, the depth of the first receiving groove 421 and the second receiving groove 422 is set to 30% of the thickness of the coil support plate 42, i.e., 30% of the thickness of the coil support plate 42 is removed. It should be noted that when the coil support plate 42 is relatively thick, the depth of the first receiving groove 421 and the second receiving groove 422 can be greater than or equal to the diameter of the first guide wire 431, so that the first guide wire 431 can be completely embedded in the first receiving groove 421; while when the coil support plate 42 is not very thick, the depth of the first receiving groove 421 and the second receiving groove 422 can be slightly less than the diameter of the first guide wire 431. In this case, the first guide wire 431 is partially received in the first receiving groove 421, which can also reduce the interference and compression between the first guide wire 431 and the coil support plate 42.

[0081] Furthermore, since the first guide line 431 may move during the use and testing of the camera module, if the width of the first receiving groove 421 is set to be the same as the diameter of the first guide line 431, interference may easily occur. Therefore, in this embodiment, the width of the first receiving groove 421 is greater than the diameter of the first guide line 431. Preferably, the width of the first receiving groove 421 is 5 to 10 times the diameter of the first guide line 431 to provide sufficient movement space for the first guide line 431. To ensure structural symmetry, the width of the second receiving groove 422 is also 5 to 10 times the diameter of the first guide line 431, and the width of the second receiving groove 422 is the same as the width of the first receiving groove 421.

[0082] To better adapt to the actual routing of the first guide wire 431, in this embodiment, the first receiving groove 421 is preferably arc-shaped. Specifically, the first receiving groove 421 includes: a first extension 4211, a second extension 4212, and an arc-shaped connecting section 4213 connecting the first extension 4211 and the second extension 4212, wherein the included angle between the first extension 4211 and the second extension 4212 is an obtuse angle, and the second extension 4212 penetrates the edge of the coil support plate 42. The shape of the second receiving groove 422 is the same as that of the first receiving groove 421, and will not be described again in this embodiment. Further, the first receiving groove 421 and the second receiving groove 422 are located at diagonal positions of the coil support plate 42. This arrangement facilitates the connection of the first guide wire 431 to the circuit board 41 after being led out along the first receiving groove 421, and also facilitates the processing of the groove. Of course, in other embodiments, the shape of the first receiving groove 421 can also be straight or broken, etc., and is not limited to this embodiment.

[0083] In this embodiment, the top and / or sides of the support member 2 are also provided with a plurality of anti-collision blocks 24. When the camera module is subjected to external impact or severe vibration, the anti-collision blocks 24 can play a shock-absorbing and buffering role; at the same time, the anti-collision blocks 24 can limit and buffer the movement of the support member 2, reduce the impact force between the support member 2 and the outer shell 5 during the movement, and improve the vibration reduction and noise reduction performance of the camera module. Preferably, the anti-collision blocks 24 are made of elastic materials, such as silicone, rubber or resin, so as to better absorb the impact force generated by vibration and protect the camera module from vibration.

[0084] Example 2

[0085] This embodiment provides another camera module, whose structure is basically the same as that in Embodiment 1. The difference is that the camera module in this embodiment also includes a metal cover 8.

[0086] In existing technologies, the image sensor 13 generates a significant amount of heat during operation. However, the support component 2 that carries the image sensor 13 within the current camera module is mostly made of plastic. While plastic has advantages such as low cost, light weight, and ease of processing and molding, its heat dissipation performance is poor. Due to the low heat dissipation of the plastic support component 2, the heat generated by the image sensor 13 cannot be dissipated effectively and promptly, leading to an increase in the temperature around the image sensor 13. Excessive temperature not only affects the normal operation of the image sensor 13 and reduces image quality, such as causing increased noise and color distortion, but may also shorten the lifespan of the image sensor 13 or even damage the entire camera module.

[0087] To solve the above problems, such as Figures 13 to 14As shown, in this embodiment, the camera module further includes a metal cover 8. The metal cover 8 is provided with a receiving groove 81. An elongated hole 83 is provided at the connection between the bottom of the receiving groove 81 and the first side wall 82 of the receiving groove 81. The side wall of the receiving groove 81 is provided with multiple reinforcing holes 84. The receiving groove 81 covers the outer wall of the support member 2. The outer wall of the support member 2 is provided with multiple bosses 25, which are located in the elongated hole 83 and the multiple reinforcing holes 84, respectively. By using the receiving groove 81 of the metal cover 8 to cover the support member 2, when the image sensor 13 heats up, the heat of the image sensor 13 can be dissipated through the support member 2 and the metal cover 8. The metal cover 8 improves the heat dissipation performance of the support member 2, and the heat generated by the image sensor 13 can be effectively dissipated, thereby improving the performance of the camera module. Furthermore, the bosses 25 on the outer wall of the support component 2 are located in the elongated hole 83 and the reinforcing hole 84, respectively, which improves the assembly strength between the support component 2 and the metal cover 8. When the camera module is used or subjected to a drop test, it prevents the support component 2 from separating from the metal cover 8 and improves the reliability of the camera module.

[0088] Preferably, a notch 85 is provided at one end of the first sidewall 82 away from the bottom of the groove, and a boss 25 is provided in the notch 85. After the support member 2 is connected to the metal cover 8, the boss 25 in the elongated hole 83 and the boss 25 in the notch 85 respectively abut against the two ends of the first sidewall 82 along the first direction, thereby restricting the metal cover 8 from swaying relative to the support member 2 in the first direction and improving the connection strength between the support member 2 and the metal cover 8.

[0089] In the prior art, the metal cover 8 is often processed by stretch forming. Before forming, the corner of the receiving groove 81 of the metal cover 8 is provided with holes that are conducive to forming and mating with plastic parts. During the stretch forming process, the holes are easily damaged or deformed, resulting in poor precision. If the holes are deformed, it will affect the strength of the bearing 2, and the bearing 2 and the metal cover 8 may not fit properly. During testing, the bearing 2 is prone to deformation or breakage.

[0090] To solve the above problems, such as Figures 15 to 17 As shown, this embodiment also provides a molding process for manufacturing the carrier 2 and the metal cover 8 in the above-mentioned camera module. The molding process includes the following steps:

[0091] S1. Create a metal plate of a preset shape, which is the shape of the metal cover 8 after it is unfolded;

[0092] S2. Machining reinforcing holes 84 and notches 85 at predetermined positions on the metal plate;

[0093] S3. The metal plate is bent to form a metal cover 8, and the elongated hole 83 of the metal cover 8 is formed.

[0094] S4. The metal cover 8 is injection molded into an insert to form the support component 2. The reinforcing hole 84, the notch 85 and the elongated hole 83 are all formed with the boss 25 of the support component 2.

[0095] The metal cover 8 is punched before molding and formed using a bending process. Compared to a stretching process, bending reduces the manufacturing difficulty of the metal cover 8, improves the precision of the reinforcing holes 84, notches 85, and elongated holes 83, and reduces the probability of product defects. The support component 2 is injection molded as an insert on the metal cover 8, increasing the connection strength between the metal cover 8 and the support component 2, preventing the metal cover 8 from falling off, and reducing uncertainties in the production process. Moreover, it is also possible to form a large and highly precise elongated hole 83 at the connection between the bottom of the receiving groove 81 and the first side wall 82 of the receiving groove 81.

[0096] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A camera module, characterized in that, include: A base assembly, comprising a base and a fixing member, wherein the fixing member is integrally disposed on the base and located on one side of the base; The outer shell is connected to the base assembly, and a receiving cavity is formed between the outer shell and the base assembly. The outer shell is provided with a central opening. The lens assembly is fixed inside the central opening of the housing; The carrier is slidably disposed within the accommodating cavity along the first direction; An image sensor is fixed to the side of the carrier near the base assembly, and the lens assembly is coaxially arranged with the image sensor; The driving module includes a magnet assembly and a coil assembly. The magnet assembly is disposed on one side of the carrier. The coil assembly is fixedly disposed in the accommodating cavity and is disposed opposite to the magnet assembly. The support member has a first sliding groove on the side near the fixing member, and the fixing member has a second sliding groove on the side near the support member. A guide member is installed between the first sliding groove and the second sliding groove to allow the support member to slide in connection with the fixing member. A first limiting member is provided at the upper end of the first sliding groove, and a second limiting member is provided at the lower end of the second sliding groove to prevent the guide member from sliding out between the first sliding groove and the second sliding groove.

2. The camera module according to claim 1, characterized in that, The outer shell is fixed to the fastener by adhesive bonding.

3. The camera module according to claim 2, characterized in that, The fastener has a recessed structure on the side of its surface away from the carrier for applying adhesive to bond and fix it to the inner wall of the housing.

4. The camera module according to claim 3, characterized in that, The indentation structure includes several grooves extending in the horizontal direction.

5. The camera module according to claim 1, characterized in that, The base includes a side frame extending around the periphery of the housing and a bottom frame having a mounting opening, the fastener being integrally disposed within the bottom frame; the base also includes a limiting block, the limiting block being connected to the inner side of the bottom frame and extending toward the interior of the mounting opening, the bottom surface of the bearing member contacting the limiting block.

6. The camera module according to claim 5, characterized in that, The inner side of the bottom frame is provided with three limiting blocks, one of which is located on the side opposite to the fixing member; the other two limiting blocks are located on both sides of the bottom frame, and the other two limiting blocks are connected to the two sides of the fixing member in a corresponding manner.

7. The camera module according to claim 1, characterized in that, The coil assembly includes a circuit board, a coil support plate, and a coil arranged sequentially. The coil is fixed on the coil support plate. A first guide wire extends from the inner side of the coil, and a second guide wire extends from the outer side. The coil support plate has a first receiving groove that penetrates the edge of the coil support plate on the side facing the coil. The first guide wire passes through the first receiving groove and is electrically connected to the circuit board.

8. The camera module according to claim 7, characterized in that, The outer dimensions of the coil support plate are larger than the outer dimensions of the coil; the coil has a first central hole, and a second central hole is provided on the coil support plate, the size of the second central hole being smaller than the size of the first central hole.

9. The camera module according to claim 8, characterized in that, The coil support plate is made of a soft magnetic metal material, and the shape of the coil support plate is a centrally symmetrical figure; the side of the coil support plate facing the coil is also provided with a second receiving groove, and the first receiving groove and the second receiving groove are symmetrically arranged about the center of the coil support plate or rotated 180 degrees about the axis of the second central hole.

10. The camera module according to claim 9, characterized in that, The depths of the first and second receiving grooves are 20% to 40% of the thickness of the coil support plate; and / or, The widths of the first and second receiving grooves are 5 to 10 times the diameter of the first guide wire; and / or, Both the first receiving groove and the second receiving groove are arc-shaped, and are located diagonally opposite each other on the coil support plate.

11. The camera module according to claim 7, characterized in that, The carrier has a first mounting groove on the side near the fixing member, and the magnet assembly is mounted in the first mounting groove; the fixing member has a second mounting groove on the side near the carrier, and the coil assembly is mounted in the second mounting groove; and / or, The carrier includes a movable through-hole that extends longitudinally through the carrier. The image sensor is located below the movable through-hole, and the lens assembly is located above the movable through-hole, with the outer diameter of the lens assembly being smaller than the diameter of the movable through-hole; and / or, The coil assembly further includes a magnetic sensor electrically connected to the circuit board; and / or, The magnet assembly includes a shielding plate and at least one magnet, each of which is fixed to the shielding plate.

12. The camera module according to claim 1, characterized in that, The drive module also includes a base plate and a driver circuit. The base plate is fixed to the base, and the driver circuit is mounted on the base plate. The driver circuit is electrically coupled to the image sensor and the coil assembly, respectively.

Images