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, an accommodating cavity is formed between the shell and the base assembly, and the shell is provided with a central opening; 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, and the magnet assembly is arranged on one side of the bearing part; the coil assembly is fixedly arranged in the accommodating cavity and is opposite to the magnet assembly; the coil assembly comprises a circuit board, a coil supporting plate and a coil, the coil is fixed on the coil supporting plate, and a first guide wire is led out of the inner side of the coil; the coil supporting plate is provided with a first containing groove, and the first guide wire penetrates out of the first containing groove and is electrically connected with the circuit board. According to the utility model, interference between the first guide wire and the coil supporting plate is avoided, and the risk that the first guide wire is broken by pressing is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera equipment technical field especially relates to a camera module. BACKGROUND

[0002] Voice Coil Motor (VCM) has simple structure, small size, low energy consumption, high acceleration, fast response speed, displacement accuracy and low price and so on, therefore, at present, for the automatic focusing function of camera device, voice coil motor is still the scheme with higher performance price ratio.

[0003] The voice coil motor in the camera module includes a magnet assembly and a coil assembly that interact, the coil assembly includes a coil, a coil support plate and a circuit board, etc., after the coil is wound, first guide wire and second guide wire are extended at both ends of the coil, wherein the first guide wire is located at the inner side of the coil, the second guide wire is located at the outer side of the coil, and the first guide wire and the second guide wire are used for electrical connection with the circuit board and other components.In the assembly of the coil assembly, the first guide wire located at the inner side of the coil needs to be transversely outwardly threaded, so that the first guide wire is clamped between the end face of the coil and the coil support plate, which will cause interference between the first guide wire and the coil support plate, causing excessive extrusion of the first guide wire, and even the first guide wire is broken, thereby affecting the normal use of the camera module.

[0004] Therefore, there is an urgent need for a camera module to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] Based on the above, the purpose of the utility model is to provide a camera module, which can avoid the interference between the first guide wire of the coil and the coil support plate, and reduce the risk of the first guide wire being broken.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A camera module, comprising:

[0008] A base assembly;

[0009] An outer shell connected with the base assembly, a containing cavity is formed between the outer shell and the base assembly, and the outer shell is provided with a central opening;

[0010] A lens assembly fixed in the central opening of the outer shell;

[0011] A carrier slidingly arranged in the containing cavity along a first direction;

[0012] An image sensor fixed on one side of the carrier close to the base assembly, and the lens assembly and the image sensor are coaxially arranged;

[0013] The driving module comprises a magnet assembly and a coil assembly, the magnet assembly is arranged on one side of the bearing; the coil assembly is fixedly arranged in the accommodating cavity and is arranged opposite to the magnet assembly; the coil assembly comprises an electric circuit board, a coil support plate and a coil arranged in sequence, the coil is fixed on the coil support plate, the inner side of the coil leads out a first lead wire and the outer side of the coil leads out a second lead wire; the coil support plate is provided with a first accommodating groove penetrating the edge of the coil support plate on the side facing the coil, and the first lead wire is led out from the first accommodating groove and electrically connected with the electric circuit board.

[0014] In some possible embodiments, the outer dimension of the coil support plate is greater than the outer dimension of the coil; the coil has a first central hole, and the coil support plate is provided with a second central hole, and the size of the second central hole is smaller than the size of the first central hole.

[0015] In some possible embodiments, the coil support plate is made of a soft magnetic metal material, and the shape of the coil support plate is a central symmetric figure; the coil support plate is further provided with a second accommodating groove on the side facing the coil, and the first accommodating groove and the second accommodating groove are symmetrically arranged about the center of the coil support plate or are arranged in a 180-degree rotation about the axis of the second central hole.

[0016] In some possible embodiments, the depth of the first accommodating groove and the second accommodating groove is 20% to 40% of the thickness of the coil support plate.

[0017] In some possible embodiments, the width of the first accommodating groove and the second accommodating groove is 5 to 10 times the diameter of the first lead wire.

[0018] In some possible embodiments, the first accommodating groove and the second accommodating groove are both arc-shaped, and the first accommodating groove and the second accommodating groove are arranged at opposite diagonal positions of the coil support plate.

[0019] In some possible embodiments, the first accommodating groove and the second accommodating groove each comprise a first extending segment, a second extending segment and an arc-shaped connecting segment connected between the first extending segment and the second extending segment, wherein the included angle between the first extending segment and the second extending segment is obtuse, and the second extending segment penetrates the edge of the coil support plate.

[0020] In some possible embodiments, the base assembly comprises a base and a fixing member, the fixing member is arranged on the base and located on one side of the base;

[0021] The bearing part is provided with a first sliding groove on the side close to the fixing part, the fixing part is provided with a second sliding groove on the side close to the bearing part, and a guide part is arranged between the first sliding groove and the second sliding groove to realize the sliding connection between the bearing part and the fixing part; and / or,

[0022] The bearing part is provided with a first sliding groove on the side close to the fixing part, the fixing part is provided with a second sliding groove on the side close to the bearing part, and a guide part is arranged between the first sliding groove and the second sliding groove to realize the sliding connection between the bearing part and the fixing part; and / or,

[0023] The bearing part comprises a moving through hole longitudinally penetrating the bearing part, the image sensor is located below the moving through hole, the lens assembly is located above the moving through hole, and the outer diameter of the lens assembly is smaller than the aperture of the moving through hole; and / or,

[0024] The coil assembly further comprises a magnetic sensor, and the magnetic sensor is electrically connected with the circuit board; and / or,

[0025] The magnet assembly comprises a shielding plate and at least one magnet, and each magnet is fixed on the shielding plate.

[0026] In some possible embodiments, the base and the fixing part are in a split structure, and the fixing part is fixed on the base.

[0027] The lower end of the first sliding groove is provided with a first limiting part, and the upper end of the second sliding groove is provided with a second limiting part, so as to block the guide part from sliding out of the first sliding groove and the second sliding groove.

[0028] In some possible embodiments, the base comprises a side frame extending around the periphery of the shell and a bottom frame with a mounting opening, and the bottom frame is provided with a glue receiving groove; the base further comprises a limiting block connected with the inner side surface of the bottom frame and extending towards the inside of the mounting opening, and the bottom surface of the bearing part is in contact with the limiting block.

[0029] In some possible embodiments, the driving module further comprises a bottom plate and a driver circuit, the bottom plate is fixed on the base, the driver circuit is mounted on the bottom plate, and the driver circuit is electrically coupled with the image sensor and the coil assembly respectively.

[0030] The utility model discloses the beneficial effects of:

[0031] This invention provides a first receiving groove through its edge on the coil support plate to accommodate the first guide wire extending laterally from the inner side of the coil. This allows the first guide wire to pass through the first receiving groove and connect to the circuit board, thus avoiding interference between the first guide wire and the coil support plate. This greatly reduces the risk of the first guide wire being squeezed or even broken, ensuring the reliability of the camera module. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the camera module provided in Embodiment 1 of this utility model;

[0033] Figure 2 This is an exploded view of the camera module provided in Embodiment 1 of this utility model;

[0034] Figure 3 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;

[0035] Figure 4 This is an exploded view of the carrier and magnet assembly provided in Embodiment 1 of this utility model;

[0036] Figure 5 This is an exploded view of the fixing member, coil assembly, and guide member provided in Embodiment 1 of this utility model;

[0037] Figure 6 This is a schematic diagram of the first angle structure of the coil and coil support plate provided in Embodiment 1 of this utility model;

[0038] Figure 7 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;

[0039] Figure 8 This is a schematic diagram of the coil structure provided in Embodiment 1 of this utility model;

[0040] Figure 9 This is a schematic diagram of the coil support plate provided in Embodiment 1 of this utility model;

[0041] Figure 10 This is a schematic diagram of the structure of the base provided in Embodiment 1 of this utility model;

[0042] Figure 11 This is an exploded view of the camera module provided in Embodiment 2 of this utility model;

[0043] Figure 12 This is a schematic diagram of the first angle structure of the base assembly provided in Embodiment 2 of this utility model;

[0044] Figure 13is a second angle structure schematic view of the base assembly provided by the embodiment two of the utility model;

[0045] Figure 14 is a structure schematic view of the bearing provided by the embodiment two of the utility model;

[0046] Figure 15 is a structure schematic view of the bearing and the metal cover body provided by the embodiment three of the utility model;

[0047] Figure 16 is an structure explosion drawing of the bearing and the metal cover body provided by the embodiment three of the utility model;

[0048] Figure 17 is a flow schematic view of the forming process provided by the embodiment three of the utility model;

[0049] Figure 18 is a structure schematic view of the metal plate of preset shape provided by the embodiment three of the utility model;

[0050] Figure 19 is a structure schematic view of the metal plate bending forming provided by the embodiment three of the utility model.

[0051] In the drawing,

[0052] 1, base assembly;11, base;111, side frame;112, bottom frame;1121, installation opening;1122, glue bearing groove;113, limiting block;12, fixed part;121, second sliding groove;1211, second limiting part;1212, fourth limiting part;122, second installation groove;123, indentation structure;13, image sensor;14, driver circuit;15, bottom plate;2, bearing;21, first sliding groove;211, first limiting part;212, third limiting part;22, first installation groove;23, moving through hole;24, anti-collision block;25, boss;3, magnet assembly;31, shielding plate;32, magnet;4, coil assembly;41, circuit board;42, coil support plate;421, first accommodating groove;4211, first extension section;4212, second extension section;4213, arc connection section;422, second accommodating groove;423, second center hole;43, coil;431, first guide line;432, second guide line;433, first center hole;44, magnetic sensor;5, shell;51, center opening;6, guide part;7, lens assembly;8, metal cover body;81, containing groove;82, first side wall;83, long hole;84, reinforcing hole;85, notch. DETAILED DESCRIPTION

[0053] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0054] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0055] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0056] In the description of the utility model, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are merely used to distinguish in description and have no special meaning.

[0057] The utility model embodiment provides a kind of camera module, it can be applied to electronic product, realizes the automatic focusing or optical anti-shake function of lens by the drive form of voice coil motor.

[0058] Embodiment one

[0059] As Figures 1 to 10As shown, the embodiment provides a camera module, which includes 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 arranged on the base 11 and located at one side of the base 11. Preferably, the fixing member 12 is arranged perpendicularly to the base 11. The housing 5 is connected with the base 11, and a receiving cavity is formed between the housing 5 and the base assembly 1. The housing 5 is provided with a central opening 51, which is matched in size with the lens assembly 7, and the lens assembly 7 is fixed in the central opening 51. The carrier 2 is arranged in the receiving cavity and slides in a first direction. The first direction is specifically the optical axis direction of the lens assembly 7. The image sensor 13 is located in the receiving cavity and is fixed to one side of the carrier 2 close to the base 11, and the lens assembly 7 is coaxially arranged with the image sensor 13. The carrier 2 can move along the optical axis direction in the receiving cavity with the image sensor 13, change the distance between the image sensor 13 and the lens assembly 7, and thus adjust the focus of the lens. The image sensor 13 can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) sensor, and the image projected on the image sensor 13 can be captured, stored and / or presented to the user. Further, the carrier 2 has a ring structure, and a moving through-hole 23 is arranged at the center of the carrier 2 and longitudinally penetrates the carrier 2. The image sensor 13 is located below the moving through-hole 23, and the lens assembly 7 is located above the moving through-hole 23, which makes the light pass through the lens assembly 7 and then pass through the moving through-hole 23 to reach the image sensor 13 to obtain an image. Moreover, the outer diameter of the lens assembly 7 is smaller than the aperture of the moving through-hole 23, which makes the lens assembly 7 pass through the moving through-hole 23 smoothly when the carrier 2 moves with the image sensor 13.

[0060] The embodiment directly fixes the lens assembly 7 in the central opening 51 of the housing 5, so that the light directly passes through the lens assembly 7 to reach the image sensor 13, which can ensure that the light passes normally in any case. The embodiment first fixes the housing 5 and the lens assembly 7, and only needs to ensure that the image sensor 13 and the lens assembly 7 are coaxial in the optical axis direction during assembly, which can ensure the assembly precision and is more conducive to the optimization of the assembly process. The lens assembly 7 specifically can include one or more lenses, which can interact to focus the light on the image sensor 13.

[0061] The driving module is used to drive the image sensor 13. The driving module comprises the magnet assembly 3 and the coil assembly 4. The magnet assembly 3 is arranged on the side of the carrier 2 close to the fixing member 12, and the coil assembly 4 is arranged on the side of the fixing member 12 close to the carrier 2, and the coil assembly 4 is arranged opposite to 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 electric current to generate a magnetic field interacting with the magnetic field of the magnet assembly 3. The attractive force or repulsive force between the magnetic fields drives the carrier 2 and the image sensor 13 to move up or down along the optical axis in the accommodating cavity, so as to adjust the distance between the image sensor 13 and the lens assembly 7, and realize the function of automatic focusing.

[0062] The driving module of the embodiment further comprises a bottom plate 15 and a driver circuit 14. The bottom plate 15 is fixed below the base 11, and the driver circuit 14 is mounted on the bottom plate 15. The driver circuit 14 is electrically coupled with the image sensor 13 and the coil assembly 4, respectively. The driver circuit 14, for example, a driver IC, delivers power to the coil assembly 4 to excite the coil assembly 4 and generate a second magnetic field interacting 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 by an external controller, for example, 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 delivered to the coil assembly 4 (and thus reversing the polarity of the magnetic field generated from the coil assembly 4) and adjusting the effective strength of the magnetic field (for example, using pulse width modulation) to adjust the amount of attractive force or repulsive force between the magnet assembly 3 and the coil assembly 4, so as to drive the image sensor 13 to move up and down by the carrier 2 driven by the magnet assembly 3. The image sensor 13 can feed back the detected image information to the control module of the camera device or the like through the driver circuit 14. Further, the driver circuit 14 also has a resilient function, which can help the image sensor 13 to reset after moving, and at the same time make the image sensor 13 more stable when moving up and down.

[0063] Optionally, a first sliding groove 21 is arranged on the side of the carrier 2 opposite to the fixing member 12, and a second sliding groove 121 is arranged on the side of the fixing member 12 opposite to the carrier 2. The first sliding groove 21 and the second sliding groove 121 both extend along the optical axis direction of the lens assembly 7, and a guide member 6 is mounted between the first sliding groove 21 and the second sliding groove 121, so that the carrier 2 can slide relative to the fixing member 12. In this way, the smoothness and running accuracy of the carrier 2 moving along the optical axis direction are increased, and the frictional resistance is reduced. Specifically, the guide member 6 can be a plurality of balls or a guide column extending along the optical axis direction, which can all play a good guiding role. Preferably, the guide member 6 of the embodiment adopts balls for guiding.

[0064] In this embodiment, the base 11 and the fixing member 12 are separate structures. The fixing member 12 is fixed to the base 11, for example, by bonding, screwing, snapping, etc. The base assembly 1 in this embodiment adopts a separate structure, which facilitates the separate processing of the base 11 and the fixing member 12. For this separate structure, in this embodiment, preferably, a first limiting member 211 is provided at the lower end of the first slide groove 21, and a second limiting member 1211 is provided at the upper end of the second slide groove 121, which are used to prevent the guide member 6 from sliding out between the first slide groove 21 and the second slide groove 121, and limit the stroke of the bearing member 2 moving along the optical axis. Of course, in other embodiments, the first limiting member 211 can also be provided at the upper end of the first slide groove 21, and the second limiting member 1211 can also be provided at the lower end of the second slide groove 121, which can also play a limiting role.

[0065] Furthermore, a first mounting groove 22 is provided on the side of the carrier 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 adhesive bonding or other methods, and the magnets 32 are combined to form 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 carrier 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] The base 11 in this embodiment includes a bottom frame 112 and side frames 111 disposed on 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 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 mounting 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.

[0077] The bottom frame 112 is also provided with an adhesive receiving groove 1122. The adhesive receiving groove 1122 is formed by a downward indentation from the upper surface of the bottom frame 112. It is used to store a small amount of adhesive when bonding the outer shell 5 to the base 11, to avoid adhesive overflow, reduce the probability of product abnormalities, and ensure the functional characteristics of the product.

[0078] 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.

[0079] Optionally, the upper surface of the limiting block 113 is 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 onto 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.

[0080] Example 2

[0081] like Figures 11 to 14 As shown, this embodiment provides another camera module, whose structure is basically the same as that in Embodiment 1, also including a base assembly 1, a support member 2, a magnet assembly 3, a coil assembly 4, a housing 5, a guide member 6, a lens assembly 7, an image sensor 13, a driver circuit 14, a base plate 15, a first mounting groove 22, a movable through hole 23, a collision protection block 24, a central opening 51, a second mounting groove 122, etc. The following description of this embodiment only explains the differences from Embodiment 1, while the parts that are the same as in Embodiment 1 will not be repeated.

[0082] In this embodiment, the base assembly 1 includes a base 11 and a fixing member 12, wherein the base 11 is used to contact the carrier 2, and the fixing member 12 is used to support the coil assembly 4. In this embodiment, the fixing member 12 is integrally disposed on the base 11 and located on one side of the base 11, that is, the base assembly 1 is an integral structure, manufactured by an integral molding process. Furthermore, the fixing member 12 is perpendicular to the base 11. The base assembly 1 of this embodiment adopts an integral structure, which not only improves the 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, reducing assembly errors, improving the positioning accuracy between the carrier 2 and the outer shell 5, and avoiding uncertainties in 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.

[0083] Furthermore, in this embodiment, a first sliding groove 21 is provided on the side of the carrier 2 near the fixing member 12, and a second sliding groove 121 is provided on the side of the fixing member 12 near the carrier 2. A guide member 6 is installed between the first sliding groove 21 and the second sliding groove 121 to achieve a sliding connection between the carrier 2 and the fixing member 12. 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 sliding groove 121 of the fixing member 12, it will interfere with the assembly of the carrier 2 and affect the assembly of the carrier 2. Therefore, in this embodiment, a third limiting member 212 is provided at the upper end of the first sliding groove 21 of the carrier 2, and a fourth limiting member 1212 is provided at the lower end of the second sliding groove 121, thereby preventing the guide member 6 from sliding out from between the first sliding groove 21 and the second sliding 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.

[0084] 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.

[0085] 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.

[0086] Furthermore, the base 11 of this embodiment includes a side frame 111 extending around the periphery of the outer shell 5 and a bottom frame 112 having a mounting opening 1121, wherein the fastener 12 is integrally disposed within the bottom frame 112; the base 11 also includes a limiting block 113, which is connected to the inner side of the bottom frame 112 and extends toward the interior of the mounting opening 1121, and the bottom surface of the carrier 2 contacts the limiting block 113.

[0087] Furthermore, 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 above three limiting blocks 113 can improve the balance of the impact force of the bearing member 2 on the limiting block 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 block 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 block 113, further improving the structural stability and bending resistance of the limiting block 113, and preventing the limiting block 113 from bending or breaking due to the impact of the bearing member 2.

[0088] Example 3

[0089] 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.

[0090] 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.

[0091] To solve the above problems, such as Figures 15 to 16As 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.

[0092] 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.

[0093] 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.

[0094] To solve the above problems, such as Figures 17 to 19 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:

[0095] S1. Create a metal plate of a preset shape, which is the shape of the metal cover 8 after it is unfolded;

[0096] S2. Machining reinforcing holes 84 and notches 85 at predetermined positions on the metal plate;

[0097] S3. The metal plate is bent to form a metal cover 8, and the elongated hole 83 of the metal cover 8 is formed.

[0098] 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.

[0099] 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.

[0100] 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: Base assembly; 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 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 accommodating groove extending through the edge of the coil support plate on the side facing the coil. The first guide wire passes through the first accommodating groove and is electrically connected to the circuit board.

2. The camera module according to claim 1, 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.

3. The camera module according to claim 2, 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.

4. The camera module according to claim 3, characterized in that, The depth of the first receiving groove and the second receiving groove is 20% to 40% of the thickness of the coil support plate.

5. The camera module according to claim 3, characterized in that, The width of the first receiving groove and the second receiving groove is 5 to 10 times the diameter of the first guide line.

6. The camera module according to claim 3, characterized in that, 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.

7. The camera module according to claim 6, characterized in that, Both the first receiving groove and the second receiving groove include: a first extension section, a second extension section, and an arc-shaped connecting section connecting the first extension section and the second extension section, wherein the included angle between the first extension section and the second extension section is an obtuse angle, and the second extension section passes through the edge of the coil support plate.

8. The camera module according to any one of claims 1-7, characterized in that, The base assembly includes a base and a fixing member, wherein the fixing member is disposed on the base and located on one side of the base; 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 and second sliding grooves to allow the support member and the fixing member to slide together; and / or, 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.

9. The camera module according to claim 8, characterized in that, The base and the fastener are separate structures, and the fastener is fixed to the base; The lower end of the first slide groove is provided with a first limiting member, and the upper end of the second slide groove is provided with a second limiting member, which are used to prevent the guide member from sliding out from between the first slide groove and the second slide groove.

10. The camera module according to claim 8, 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 bottom frame having an adhesive groove; 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 support member contacting the limiting block.

11. The camera module according to claim 8, 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