Camera module and electronic device

Abstract

The application relates to a camera module and electronic equipment, comprising an anti-shake mechanism, along the thickness direction of the anti-shake mechanism, the anti-shake mechanism comprises a first moving frame, a second moving frame and a third fixed frame connected in sequence, the first moving frame is used for mounting a lens assembly, one of the first moving frame and the second moving frame is provided with a first sliding groove part, and the other is provided with a first sliding part, the first sliding part can slide along the first sliding groove part, the first sliding groove part extends along a first direction, one of the second moving frame and the third fixed frame is provided with a second sliding groove part, and the other is provided with a second sliding part, the second sliding part can slide along the second sliding groove part, and the second sliding groove part extends along a second direction. The structure has the advantages of simple structure and low manufacturing cost, double-layer freedom degree decoupling, reduced motion crosstalk, reduced moving inclination angle, more reliable support limiting, meeting the shooting and video requirements of the electronic equipment under shaking, and improving the use experience of users.

Description

Technical Field

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

[0002] With the rapid development of electronic device technology, electronic devices containing camera modules are widely used, such as mobile phones and tablets, which are particularly favored and widely used by consumers. To avoid poor image quality caused by camera shake during shooting, electronic devices with camera modules typically include an optical image stabilization (OIS) mechanism. However, the OIS mechanisms in existing camera modules generally use wire-based or ball-bearing stabilization, which supports the moving parts of the OIS through wires or balls. However, the reliability of wire or ball support is relatively poor, which can easily lead to a decrease in stabilization performance and fail to meet the increasingly high shooting and video requirements of consumers in motion. Summary of the Invention

[0003] This application provides a camera module and electronic device to solve the problem of poor support reliability of the image stabilization mechanism in the camera module in the prior art.

[0004] A first aspect of this application provides a camera module including an image stabilization mechanism. Along the thickness direction of the image stabilization mechanism, the image stabilization mechanism includes a first movable frame, a second movable frame, and a third fixed frame connected in sequence. The first movable frame is used to mount a lens assembly. One of the first movable frame and the second movable frame is provided with a first sliding groove, and the other is provided with a first sliding portion. The first sliding portion is slidable along the first sliding groove, and the first sliding groove extends in a first direction. One of the second movable frame and the third fixed frame is provided with a second sliding groove, and the other is provided with a second sliding portion. The second sliding portion is slidable along the second sliding groove, and the second sliding groove extends in a second direction.

[0005] In this solution, since the first moving frame of the image stabilization mechanism in the camera module can move relative to the second moving frame along the first direction, and the second moving frame can move relative to the third fixed frame along the second direction, it has a two-layer degree of freedom decoupling, which reduces motion crosstalk between the first moving frame and the second moving frame, reduces the movement tilt angle, improves the motion accuracy of the first moving frame and the second moving frame, and improves the image stabilization effect. The sliding mechanism, where the second moving frame and the third fixed frame slide together via the second sliding part and the second sliding groove, and the first moving frame and the second moving frame slide together via the first sliding part and the first sliding groove, offers advantages such as simple structure, low manufacturing cost, low motion resistance, faster response speed, and smoother movement. Furthermore, this mechanism makes the support and limiting between the first moving frame, the second moving frame, and the third fixed frame more reliable, reducing the likelihood of thickness-direction sinking. The force distribution on the first and second sliding grooves is more uniform, improving the support reliability between the first moving frame, the second moving frame, and the third moving frame, preventing a reduction in stabilization effect, and thus improving the stabilization reliability of the stabilization mechanism. In addition, this mechanism allows the first and second sliding grooves to have a larger travel space, enabling the first and second moving frames to have a larger travel distance, thereby increasing the stabilization angle of the stabilization mechanism. This meets the shooting and video recording needs of electronic devices under more severe shaking conditions, improving the user experience.

[0006] In one possible design, the first slide groove includes a first positioning groove for engaging with the first sliding part to restrict the sliding of the first sliding part along a second direction, and the second slide groove includes a second positioning groove for engaging with the second sliding part to restrict the sliding of the second sliding part along a first direction.

[0007] In this solution, the first positioning groove cooperates with the first sliding part to prevent the first sliding part from sliding in the first positioning groove along the second direction, thereby preventing the first moving frame from displacing in the second direction relative to the second moving frame. The second positioning groove cooperates with the second sliding part to prevent the second sliding part from sliding in the second positioning groove along the first direction, thereby preventing the second moving frame from displacing in the first direction relative to the third fixed frame. This ensures that the first moving frame can only displace in the first direction relative to the second moving frame, and the second moving frame can only displace in the second direction relative to the third fixed frame, thus avoiding motion crosstalk, reducing the movement tilt angle, improving the displacement accuracy of the first and second moving frames, and enhancing the high image stabilization effect of the camera module.

[0008] In one possible design, the first positioning groove and the second positioning groove are V-shaped grooves or trapezoidal grooves.

[0009] In this design, the openings of the V-groove and trapezoidal groove gradually increase along the thickness direction. When the first sliding part and the second sliding part cooperate with the V-groove or trapezoidal groove for support along the direction, the first sliding part and the second sliding part will be located at the position where the opening of the V-groove or trapezoidal groove is smaller. This can limit the displacement of the first sliding part and the second sliding part along the non-extending direction of the V-groove or trapezoidal groove, thereby avoiding the first moving frame relative to the second moving frame and the second moving frame relative to the third fixed frame from producing non-preset displacements. This achieves precise positioning of the first sliding part 121 and the second sliding part 131. Furthermore, the structure of the V-groove and trapezoidal groove is simple, which is convenient for mass production and manufacturing. This can further reduce the complexity of the camera module mechanism and save manufacturing costs.

[0010] In one possible design, the first sliding groove portion further includes a first sliding groove, and the second sliding groove portion further includes a second sliding groove. Along the second direction, the width of the first sliding groove is greater than the width of the first sliding portion, and along the first direction, the width of the second sliding groove is greater than the width of the second sliding portion.

[0011] In this solution, when the first moving frame, the second moving frame, and the third fixed frame are in contact and support each other along the thickness direction, this structural setting can increase the fault tolerance of the first sliding part and the second sliding part, reduce the difficulty of the cooperation between the first sliding part and the first sliding part and the second sliding part, improve the pass rate of the camera module, reduce the manufacturing difficulty, and save costs.

[0012] In one possible design, the first sliding groove and the second sliding groove are square grooves or U-shaped grooves.

[0013] In this design, the square groove and the U-shaped groove have the same opening size along the thickness direction. When the first moving frame, the second moving frame, and the third fixed frame cooperate and support each other along the thickness direction, the square groove or the U-shaped groove and the first sliding part and the second sliding part can only play a supporting and limiting role in the thickness direction, and do not limit the movement in non-preset movement directions. This ensures that the first sliding part and the second sliding part can move smoothly along the preset movement direction, while increasing the fault tolerance of the first sliding part and the second sliding part.

[0014] In one possible design, the first sliding part and the second sliding part are semi-cylindrical or hemispherical structures.

[0015] In this solution, when the first sliding part and the second sliding part are semi-cylindrical or hemispherical structures, the contact area with the first sliding groove and the second sliding groove can be reduced, thereby reducing frictional resistance, making them easier to drive, and thus obtaining a faster response speed and improving the anti-shake efficiency of the camera module. In addition, the ends of the semi-cylindrical or hemispherical structures are smooth curved surfaces, which are less likely to cause stress concentration and indentation when in contact with the first sliding groove and the second sliding groove, thereby giving the first sliding groove and the second sliding groove greater load-bearing capacity, improving the drop reliability of the camera assembly, and increasing the service life of the camera assembly.

[0016] In one possible design, the first movable frame, the second movable frame, and the third fixed frame are all integrally injection molded structures.

[0017] In this solution, when the first moving frame, the second moving frame, and the third fixed frame are all integral injection molded structures, that is, the first moving frame, the second moving frame, and the third fixed frame do not require other components for support, which can further reduce the number of components in the camera module, further reduce manufacturing costs, and improve manufacturing efficiency.

[0018] In one possible design, the first movable frame further includes a first body, the second movable frame further includes a second body, the third fixed frame further includes a third body, the first sliding part is detachably connected to the first body or the second body, and the second sliding part is detachably connected to the second body or the third body.

[0019] In this design, the structure further improves the fit tolerance of the first moving frame, the second moving frame, and the third fixed frame. During manufacturing, the positions of the first and second sliding parts can be adjusted according to the actual structure, ensuring effective fit and support between the three frames. This improves the manufacturing efficiency of the camera module and allows for replacement of the first and second sliding parts when they are severely worn, reducing subsequent maintenance costs. Furthermore, this structure allows the first and second sliding parts to be made of a different material than the first moving frame, the second moving frame, and the third fixed frame, thereby improving their wear resistance and extending their service life.

[0020] In one possible design, the interior of the first and second slide grooves is provided with a lubricating material, which is either grease or lubricating oil.

[0021] In this solution, adding lubricating material to the first sliding part and the second sliding part can further reduce the sliding friction between the first sliding part and the first sliding part and between the second sliding part and the second sliding part, thereby improving the response speed, reducing power consumption, and improving the control accuracy of the first moving frame and the second moving frame.

[0022] In one possible design, the camera module further includes a magnet, and the image stabilization mechanism further includes an image stabilization coil. The image stabilization coil is used to drive the magnet to move along the first direction or the second direction. The magnet is fixed to the first moving frame, and the image stabilization coil is fixed to the third fixed frame. The image stabilization coil is arranged correspondingly to the magnet.

[0023] In this solution, when the image stabilization mechanism of the camera module is working, the coil is energized to generate magnetic flux, which can control the movement of the magnet, so that the magnet can drive the first moving frame to produce a corresponding displacement. Therefore, this structure can provide driving force for the image stabilization mechanism, so that the first and second moving frames of the image stabilization mechanism can slide according to the shaking direction and displacement of the lens assembly, so as to compensate for the shaking direction and displacement of the lens assembly and realize the image stabilization function.

[0024] In one possible design, the stabilization mechanism further includes a magnetic plate fixed to the side of the third fixed frame away from the second movable frame. The magnetic plate is able to attract the magnet to press the third fixed frame against the first movable frame.

[0025] In this design, the magnetic sheet can attract the magnet, thereby pressing the third fixed frame against the first moving frame. This makes the first moving frame, the second moving frame, and the third fixed frame more tightly connected in the thickness direction, resulting in a more stable structure that is less prone to separation and improving the structural stability of the camera module.

[0026] In one possible design, the stabilization mechanism further includes a position detection sensor, which is located on the third fixed frame and is used to detect changes in the magnetic field of the magnet to provide feedback on the positions of the first and second moving frames. The position detection sensor is a Hall element or a tunnel magnetoresistive effect sensor.

[0027] In this solution, the position detection sensor can detect the magnetic field. By detecting the change in the magnetic field of the magnet, the movement position of the magnet can be determined, thereby determining the movement positions of the first and second moving frames and feeding back their real-time position changes. This enables the camera module to achieve closed-loop control by controlling the current of the coil according to the real-time position changes, thereby driving the magnet to control the position of the first and second moving frames, further improving the control accuracy of the first and second moving frames.

[0028] In one possible design, the camera module further includes an autofocus mechanism for achieving automatic focusing of the camera module, and the autofocus mechanism is disposed on the side of the first moving frame away from the second moving frame.

[0029] This solution incorporates an autofocus mechanism, which enables the camera module to automatically focus while stabilizing the image, thereby ensuring the shooting performance of the electronic device in various sports modes and improving the user experience.

[0030] In one possible design, the autofocusing mechanism includes a focusing coil disposed inside the magnet, the focusing coil being an integral ring coil or formed by combining multiple coils.

[0031] In this solution, when the autofocus mechanism is working, the focusing coil is energized to generate magnetic flux, which interacts with the magnet, thereby driving the autofocus mechanism to achieve the autofocus function. Furthermore, depending on the specific structure of the camera module and the application scenario, the magnet, focusing coil, and image stabilization coil can be arranged in different ways.

[0032] A second aspect of this application provides an electronic device, including a housing and a camera module as described in any of the above embodiments, wherein the camera module is installed within the housing. Since the camera module has the aforementioned technical effects, the electronic device including this camera module also has corresponding technical effects, which will not be elaborated further here.

[0033] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0034] Figure 1 This application provides a schematic diagram of the structure of a camera module.

[0035] Figure 2 for Figure 1 Exploded view of part of the central camera module;

[0036] Figure 3 for Figure 2 A schematic diagram of the image stabilization mechanism;

[0037] Figure 4 for Figure 3 Cross-sectional view of the image stabilization mechanism;

[0038] Figure 5 for Figure 2 A partial structural diagram of the image stabilization mechanism;

[0039] Figure 6 for Figure 5 A schematic diagram of part of the image stabilization mechanism from another angle;

[0040] Figure 7 for Figure 3 A schematic diagram showing the interaction between the first and second moving boxes;

[0041] Figure 8 for Figure 3A schematic diagram showing the interaction between the first movable frame and the third fixed frame;

[0042] Figure 9 for Figure 4 A magnified view of a section at point A in the middle;

[0043] Figure 10 for Figure 4 A magnified view of a section at point B in the middle;

[0044] Figure 11 for Figure 3 A schematic diagram of the structure of the third fixed frame in another embodiment;

[0045] Figure 12 for Figure 3 A schematic diagram of the structure of the second movable frame in another embodiment;

[0046] Figure 13 for Figure 3 A partial structural diagram of the image stabilization mechanism;

[0047] Figure 14 for Figure 13 A schematic diagram of part of the image stabilization mechanism from another perspective;

[0048] Figure 15 for Figure 3 A partial structural diagram of the image stabilization mechanism;

[0049] Figure 16 for Figure 1 A schematic diagram of the magnet coil in the camera module;

[0050] Figure 17 for Figure 1 A schematic diagram of the structure of the magnet coil of the camera module in another embodiment.

[0051] Figure label:

[0052] 10-Camera module;

[0053] 1- Image stabilization mechanism;

[0054] 11-First moving frame;

[0055] 111 - First sluice section;

[0056] 111a - First positioning groove;

[0057] 111b - First sliding groove;

[0058] 112-First ontology;

[0059] 12 - Second moving box;

[0060] 121 - First sliding part;

[0061] 122 - Second slide section;

[0062] 122a - Second positioning groove;

[0063] 122b - Second sliding groove;

[0064] 123 - Second Body;

[0065] 124-Connector;

[0066] 13-Third fixed frame;

[0067] 131 - Second sliding part;

[0068] 132 - The Third Body;

[0069] 133 - Protrusion;

[0070] 14 - Image stabilization coil;

[0071] 15 - Position detection sensor;

[0072] 16-Magnetic clasp;

[0073] 17- Circuit board assembly for image stabilization;

[0074] 2-magnet;

[0075] 3-Automatic focusing mechanism;

[0076] 31 - Focusing coil;

[0077] 32-Lens holder;

[0078] 33 - Focusing circuit board assembly;

[0079] 4-Shell

[0080] X - First direction;

[0081] Y - Second direction;

[0082] Z - Thickness direction.

[0083] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0084] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0085] In one specific embodiment, the present application will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0086] To avoid poor image quality caused by camera shake during shooting, electronic devices with camera modules typically include an optical image stabilization (OIS) mechanism. However, existing camera module OIS mechanisms generally employ either wire-type or ball-bearing type stabilization. Wire-type stabilization uses a wire to support the moving part of the OIS. However, in this structure, the wire simultaneously serves as support and conductor, limiting its elasticity and strength due to output constraints. During long-stroke translational movements, the wire support can sink in the thickness direction, leading to reduced stabilization performance. Ball-bearing type stabilization uses multiple ball bearings to support the entire moving part of the OIS. Magnetic attraction between the moving and fixed parts compresses the ball bearings, maintaining structural stability. However, in this structure, the ball bearings contact a flat surface; in large-mass systems, drops can cause dents in the contact surface, reducing stabilization performance. Because the support reliability of wire-type and ball-bearing types is relatively poor, they easily lead to reduced stabilization performance, thus failing to meet the increasingly demanding shooting and video recording needs of consumers in motion.

[0087] To address the aforementioned technical problems, this application provides a camera module 10 that can be installed in an electronic device, thereby solving the problem of poor support reliability of the image stabilization mechanism in the camera module 10 in the prior art. This electronic device can be any electronic device with camera functionality, such as a mobile phone, tablet computer, laptop, artificial intelligence (AI) device, wearable device, or smart home device. This application does not impose any special limitations on the specific form of the aforementioned electronic device.

[0088] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0089] This application provides a camera module 10, such as... Figures 1-4 As shown, the device includes an image stabilization mechanism 1. Along the thickness direction Z of the image stabilization mechanism 1, the image stabilization mechanism 1 includes a first movable frame 11, a second movable frame 12, and a third fixed frame 13 connected in sequence. The first movable frame 11 is used to mount the lens assembly. One of the first movable frame 11 and the second movable frame 12 is provided with a first sliding groove 111, and the other is provided with a first sliding part 121. The first sliding part 121 can slide along the first sliding groove 111. The first sliding groove 111 extends along a first direction X. One of the second movable frame 12 and the third fixed frame 13 is provided with a second sliding groove 122, and the other is provided with a second sliding part 131. The second sliding part 131 can slide along the second sliding groove 122. The second sliding groove 122 extends along a second direction Y.

[0090] Since the camera module 10 will cause the lens assembly to shake when it shakes, the first moving frame 11 and the second moving frame 12 can drive the lens assembly to move in opposite directions according to the shaking direction and displacement of the lens assembly when the camera module 10 shakes, thereby compensating for the shaking direction and displacement of the lens assembly, thus effectively overcoming the poor imaging caused by the shaking of the camera module 10, and thus achieving the anti-shake effect of the anti-shake mechanism 1.

[0091] In this embodiment, as Figures 4-6 As shown, the second moving frame 12 and the third fixed frame 13 of the anti-shake mechanism 1 can generate a displacement relative to the third fixed frame 13 along the second direction Y through the cooperation of the second sliding part 131 and the second sliding groove part 122. This allows the first moving frame 11 to move along the second direction Y as the second moving frame 12 moves, generating a displacement relative to the third fixed frame 13 along the second direction Y. The first moving frame 11 and the second moving frame 12, through the cooperation of the first sliding part 121 and the first sliding groove part 111, allow the first moving frame 11 to move relative to the second moving frame 12, generating a displacement in the first direction X. This allows the first moving frame 11 to generate a displacement relative to the third fixed frame 13 along the first direction X and the second direction Y. The lens assembly is mounted on the first movable frame 11, so that the first movable frame 11 can drive the lens assembly to move along the first direction X or the second direction Y. When the first movable frame 11 moves along the first direction X and the second direction Y at the same time, the first movable frame 11 can move along the direction of its resultant force and generate a resultant displacement, thereby driving the lens assembly to generate a displacement in that direction, thereby realizing the image stabilization function of the camera module 10.

[0092] In the embodiments of this application, such as Figure 7 and Figure 8As shown, since the first moving frame 11 of the image stabilization mechanism 1 in the camera module 10 can move relative to the second moving frame 12 along the first direction X, and the second moving frame 12 can move relative to the third fixed frame 13 along the second direction Y, it has a two-layer degree of freedom decoupling, which reduces the motion crosstalk between the first moving frame 11 and the second moving frame 12, reduces the movement tilt angle, and improves the motion accuracy of the first moving frame 11 and the second moving frame 12, thus improving the image stabilization effect. The second moving frame 12 and the third fixed frame 13 slide through the second sliding part 131 and the second sliding groove part 122, and the first moving frame 11 and the second moving frame 12 slide through the first sliding part 121 and the first sliding groove part 111. This method has the advantages of simple structure and low manufacturing cost, and low motion resistance, resulting in faster response speed and smoother motion. In addition, this cooperation method makes the support and limit between the first moving frame 11, the second moving frame 12 and the third fixed frame 13 more reliable, and it is not easy to produce sinking in the thickness direction Z. The first sliding groove part 111 and the second sliding groove part The force distribution of 122 is more uniform, which improves the support reliability between the first moving frame 11, the second moving frame 12 and the third moving frame 13, avoids the reduction of the anti-shake effect, and thus improves the anti-shake reliability of the anti-shake mechanism 1. In addition, this cooperation method can also enable the first sliding groove 111 and the second sliding groove 122 to have a larger stroke space, so that the first moving frame 11 and the second moving frame 12 can have a larger movement stroke, thereby improving the anti-shake angle of the anti-shake mechanism 1, which can meet the shooting and video needs of electronic devices under more severe shaking and improve the user experience.

[0093] Among them, such as Figures 5-8 In the specific embodiment shown, the first moving frame 11 and the second moving frame 12 slide together through four first sliding parts 121 and four first sliding groove parts 111. The second moving frame 12 and the third fixed frame 13 slide together through four second sliding parts 131 and four second sliding groove parts 122. These parts are located at the four corners of the first moving frame 11, the second moving frame 12, and the third fixed frame 13 to improve support stability and movement stability, and to prevent the sliding groove parts and sliding parts from interfering with other components of the camera module 10. Of course, the number of sliding parts and sliding groove parts can be adjusted according to the specific structure, such as six or eight. The sliding groove parts and sliding parts can also be set in other positions, as long as they can slide together. No limitation is made here.

[0094] In addition, such as Figures 1-3As shown, the camera module 10 also includes a housing 4, and a third fixed frame 13 is fixed to the housing 4 and forms an accommodating space with the housing 4. The components of the image stabilization mechanism 1, such as the first moving frame 11, the second moving frame 12, and the image stabilization circuit board assembly 17, are accommodated in the accommodating space, which improves the structural stability of the camera module 10 and can also prevent the camera module 10 from interfering with other components of the electronic device, thereby improving the reliability of image stabilization.

[0095] In one specific embodiment, such as Figure 7 and Figure 8 As shown, the first sliding groove 111 includes a first positioning groove 111a, which is used to cooperate with the first sliding part 121 to restrict the sliding of the first sliding part 121 along the second direction Y. The second sliding groove 122 includes a second positioning groove 122a, which is used to cooperate with the second sliding part 131 to restrict the sliding of the second sliding part 131 along the first direction X.

[0096] In this embodiment, as Figure 7 and Figure 9 As shown, the first positioning groove 111a cooperates with the first sliding part 121 to prevent the first sliding part 121 from sliding in the first positioning groove 111a along the second direction Y, thereby preventing the first moving frame 11 from displacing in the second direction Y relative to the second moving frame 12. The second positioning groove 122a cooperates with the second sliding part 131 to prevent the second sliding part 131 from sliding in the second positioning groove 122a along the first direction X, thereby preventing the second moving frame 12 from displacing in the first direction X relative to the third fixed frame 13. Thus, the first moving frame 11 can only displace in the first direction X relative to the second moving frame 12, and the second moving frame 12 can only displace in the second direction Y relative to the third fixed frame 13. This avoids motion crosstalk, reduces the movement tilt angle, improves the displacement accuracy of the first moving frame 11 and the second moving frame 12, and enhances the high image stabilization effect of the camera module 10.

[0097] In one specific embodiment, such as Figures 7-9 As shown, the first positioning groove 111a and the second positioning groove 122a are V-shaped grooves or trapezoidal grooves.

[0098] In this embodiment, as Figures 7-9As shown, the openings of the V-groove and trapezoidal groove gradually increase along the thickness direction Z. When the first sliding part 121 and the second sliding part 131 cooperate with the V-groove or trapezoidal groove for support along the Z direction, the first sliding part 121 and the second sliding part 131 will be located at the position where the opening of the V-groove or trapezoidal groove is smaller. This can limit the displacement of the first sliding part 121 and the second sliding part 131 along the non-extending direction of the V-groove or trapezoidal groove, thereby avoiding the first moving frame 11 relative to the second moving frame 12 and the second moving frame 12 relative to the third fixed frame 13 from producing displacement in a non-preset direction. This achieves precise positioning of the first sliding part 121 and the second sliding part 131. Moreover, the structure of the V-groove and trapezoidal groove is simple, which is convenient for mass production and manufacturing. This can further reduce the complexity of the camera module 10 and save manufacturing costs.

[0099] Among them, such as Figures 7-9 In the specific embodiment shown, the first positioning groove 111a and the second positioning groove 122a are V-shaped grooves, which can further reduce manufacturing difficulty and improve production efficiency. Of course, the first positioning groove 111a can also be a V-shaped groove and the second positioning groove 122a can be a trapezoidal groove, or the first positioning groove 111a and the second positioning groove 122a can also be of other shapes and structures, as long as they can restrict the first sliding part 121 and the second sliding part 131 from non-extending displacement within the first positioning groove 111a and the second positioning groove 122a, which is not limited here.

[0100] In one specific embodiment, such as Figure 7 , Figure 8 and Figure 10 As shown, the first sliding groove portion 111 further includes a first sliding groove 111b, and the second sliding groove portion 122 further includes a second sliding groove 122b. Along the second direction Y, the width of the first sliding groove 111b is greater than the width of the first sliding portion 121, and along the first direction X, the width of the second sliding groove 122b is greater than the width of the second sliding portion 131.

[0101] In this embodiment, as Figure 7 , Figure 8 and Figure 10 As shown, when the first moving frame 11, the second moving frame 12, and the third fixed frame 13 are in contact along the thickness direction Z, this structure can increase the fault tolerance of the first sliding groove 111 and the second sliding groove 122, reduce the difficulty of the first sliding groove 111 and the first sliding part 121, and the second sliding groove 122 and the second sliding part 131, improve the pass rate of the camera module 10, reduce the manufacturing difficulty, and save costs.

[0102] In one specific embodiment, such as Figure 7 , Figure 8 and Figure 10As shown, the first sliding groove 111b and the second sliding groove 122b are square grooves or U-shaped grooves.

[0103] In this embodiment, as Figure 7 , Figure 8 and Figure 10 As shown, the square groove and the U-shaped groove have the same opening size along the thickness direction Z. When the first moving frame 11, the second moving frame 12, and the third fixed frame 13 cooperate and support each other along the thickness direction Z, the square groove or the U-shaped groove and the first sliding part 121 and the second sliding part 131 can only play a supporting and limiting role in the thickness direction Z, and do not limit the movement in non-preset movement directions. This ensures that the first sliding part 121 and the second sliding part 131 can move smoothly along the preset movement direction, while increasing the fault tolerance of the first sliding groove part 111 and the second sliding groove part 122.

[0104] Among them, such as Figure 7 , Figure 8 , Figure 10 In the specific embodiment shown, the first sliding groove 111b and the second sliding groove 122b are square grooves, which can further reduce manufacturing difficulty and improve production efficiency. Of course, the first sliding groove 111b and the second sliding groove 122b can also be other structures, as long as they can provide tolerance, and there are no restrictions here.

[0105] Additionally, along the non-extending direction of the slide groove, the positioning groove can be set on one side of the frame sliding plane, and the slide groove can be set on the other side of the sliding plane to ensure tolerance. For example Figure 7 and Figure 8 In the embodiment shown, two first positioning grooves 111a and two first sliding grooves 111b are sequentially arranged on the first moving frame 11 along the second direction Y, and two second positioning grooves 122a and two second sliding grooves 122b are sequentially arranged on the second moving frame 12 along the first direction X.

[0106] In one specific embodiment, such as Figure 5 , Figure 6 , Figure 10 and Figure 11 As shown, the first sliding part 121 and the second sliding part 131 are semi-cylindrical or hemispherical structures.

[0107] In this embodiment, as Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, when the first sliding part 121 and the second sliding part 131 are semi-cylindrical or hemispherical structures, the contact area with the first sliding groove 111 and the second sliding groove 122 can be reduced, thereby reducing frictional resistance, making them easier to drive, and thus obtaining a faster response speed, improving the anti-shake efficiency of the camera module 10. In addition, the ends of the semi-cylindrical or hemispherical structures are smooth curved surfaces, which are less likely to cause stress concentration and indentation when in contact with the first sliding groove 111 and the second sliding groove 122, thereby giving the first sliding groove 111 and the second sliding groove 122 greater load-bearing capacity, improving the drop reliability of the camera assembly, and increasing the service life of the camera assembly.

[0108] Of course, the first sliding part 121 and the second sliding part 131 can also be other structures, which are not limited here.

[0109] In one specific embodiment, such as Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 As shown, the first moving frame 11, the second moving frame 12 and the third fixed frame 13 are all integral injection molded structures.

[0110] In this embodiment, as Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 As shown, when the first moving frame 11, the second moving frame 12, and the third fixed frame 13 are all integral injection molded structures, that is, the first moving frame 11, the second moving frame 12, and the third fixed frame 13 do not require other components for support, which can further reduce the number of components in the camera module 10, further reduce manufacturing costs, and improve manufacturing efficiency.

[0111] In another specific embodiment, Figure 5 , Figure 6 and Figure 12 As shown, the first movable frame 11 also includes a first body 112, the second movable frame 12 also includes a second body 123, and the third fixed frame 13 also includes a third body 132. The first sliding part 121 is detachably connected to the first body 112 or the second body 123, and the second sliding part 131 is detachably connected to the second body 123 or the third body 132.

[0112] In this embodiment, Figure 5 , Figure 6 and Figure 12As shown, this structure can further improve the fit tolerance of the first moving frame 11, the second moving frame 12, and the third fixed frame 13. During the manufacturing process, the positions of the first sliding part 121 and the second sliding part 131 can be adjusted according to the actual structure, so that the first moving frame 11, the second moving frame 12, and the third fixed frame 13 can effectively fit and support each other, improving the manufacturing efficiency of the camera module 10. It also allows for the replacement of the first sliding part 121 and the second sliding part 131 when they are severely worn, reducing subsequent maintenance costs. Furthermore, this structure allows the first sliding part 121 and the second sliding part 131 to be made of a different material than the first moving frame 11, the second moving frame 12, and the third fixed frame 13, thereby improving the wear resistance of the first sliding part 121 and the second sliding part 131 and extending their service life.

[0113] When the first sliding part 121 and the second sliding part 131 are made of a different material than the first moving frame 11, the second moving frame 12, and the third fixed frame 13, they can be cylindrical, semi-cylindrical, spherical, or hemispherical structures made of materials such as stainless steel, and there is no limitation on this. Of course, the first sliding part 121 and the second sliding part 131 can also be made of the same material as the first moving frame 11, the second moving frame 12, and the third fixed frame 13 to reduce manufacturing costs, and there is no limitation on this either.

[0114] In another embodiment, the first sliding part 121 is connected to the first body 112 or the second body 123 by means of snap-fit ​​or the like, and the second sliding part 131 is connected to the second body 123 or the third body 132 by means of snap-fit ​​or the like; no limitation is made here. For example, such as Figure 2 In the specific embodiment shown, the second movable frame 12 is a structure in which the first sliding part 121 is detachably connected to the second body 123. The second body 123 may be provided with a snap-fit ​​part 124, so that the first sliding part 121 can be snapped into the snap-fit ​​part 124, reducing the assembly difficulty of the first sliding part 121. Similarly, the first movable frame 11 and the third fixed frame 13 can also be of this structure, or of course, other combinations thereof, which are not limited here.

[0115] In another embodiment, a V-shaped or trapezoidal mounting groove that mates with the first sliding part 121 can be formed on the first body 112 or the second body 123. The first sliding part 121 is disposed in the mounting groove. At the same time, the V-shaped or trapezoidal mounting groove can also accurately position the first sliding part 121 on the first body 112 or the second body 123 to prevent motion interference. Similarly, the cooperation between the second sliding part 131 and the second body 123 or the third body 132 can also be configured in this way, without limitation.

[0116] In one specific embodiment, such as Figure 7 and Figure 8 As shown, the interior of the first slide groove 111 and the second slide groove 122 is provided with a lubricating material, which is a lubricating grease or a lubricating oil.

[0117] In this embodiment, as Figure 7 and Figure 8 As shown, adding lubricating material to the first sliding part 111 and the second sliding part 122 can further reduce the sliding friction between the first sliding part 121 and the first sliding part 111 and the second sliding part 131 and the second sliding part 122, thereby improving the response speed, reducing power consumption, and improving the control accuracy of the first moving frame 11 and the second moving frame 12.

[0118] Of course, other lubricating materials such as graphite can also be used, and there are no restrictions here.

[0119] In one specific embodiment, such as Figure 3 and Figure 13 As shown, the camera module 10 also includes a magnet 2, and the image stabilization mechanism 1 also includes an image stabilization coil 14. The image stabilization coil 14 is used to drive the magnet 2 to move along the first direction X or the second direction Y. The magnet 2 is fixed to the first moving frame 11, and the image stabilization coil 14 is fixed to the third fixed frame 13. The image stabilization coil 14 is set correspondingly to the magnet 2.

[0120] In this embodiment, as Figure 3 and Figure 13 As shown, when the image stabilization mechanism 1 of the camera module 10 is working, the coil 14 is energized to generate magnetic flux, which can control the movement of the magnet 2, so that the magnet 2 can drive the first moving frame 11 to produce a corresponding displacement. Therefore, this structure can provide driving force for the image stabilization mechanism 1, so that the first moving frame 11 and the second moving frame 12 of the image stabilization mechanism 1 can slide according to the shaking direction and displacement of the lens assembly, so as to compensate for the shaking direction and displacement of the lens assembly and realize the image stabilization function.

[0121] Among them, such as Figure 13 and Figure 14 As shown, the third fixed frame 13 can be provided with multiple protrusions 133 to facilitate the positioning, fixing and installation of the coil 14. The first moving frame 11 can be provided with a recess to facilitate the fixing and installation of the magnet 2, so as to prevent the magnet 2 and the coil 14 from being displaced when shaking or falling, thereby improving the structural stability and drop reliability of the camera module 10.

[0122] In addition, such as Figure 2 and Figure 3 The anti-shake circuit board assembly 17 shown is mounted on the third fixed frame 13, enabling the electronic device to power the anti-shake coil 14 through the anti-shake circuit board assembly 17, thereby realizing the anti-shake function of the anti-shake mechanism 1.

[0123] In one specific embodiment, such as Figure 3 and Figure 14 As shown, the anti-shake mechanism 1 also includes a magnetic clasp 16, which is fixed to the side of the third fixed frame 13 away from the second moving frame 12. The magnetic clasp 16 can attract the magnet 2 to press the third fixed frame 13 against the first moving frame 11.

[0124] In this embodiment, as Figure 3 and Figure 14 As shown, the magnetic absorbing sheet 16 can attract the magnet 2, thereby pressing the third fixed frame 13 against the first moving frame 11, making the first moving frame 11, the second moving frame 12 and the third fixed frame 13 more tightly connected in the thickness direction Z, the structure is more stable and not easy to separate, thus improving the structural stability of the camera module 10.

[0125] Among them, such as Figure 3 and Figure 14 As shown, there are two magnetic accumulators 16, which improves structural stability and reduces the interference of the magnetic accumulators 14 on other camera elements. Of course, the number of magnetic accumulators 16 can also be three or four, depending on the specific structure, and there is no limitation here.

[0126] In one specific embodiment, such as Figure 3 , Figure 14 and Figure 15 As shown, the image stabilization mechanism 1 also includes a position detection sensor 15, which is set in the third fixed frame 13 and is used to detect changes in the magnetic field of the magnet 2 to provide feedback on the positions of the first moving frame 11 and the second moving frame 12. The position detection sensor 15 is a Hall element or a tunnel magnetoresistive effect sensor.

[0127] In this embodiment, as Figure 3 , Figure 14 and Figure 15 As shown, the position detection sensor 15 can detect the magnetic field. By detecting the change in the magnetic field of the magnet 2, it can determine the movement position of the magnet 2, thereby determining the movement position of the first moving frame 11 and the second moving frame 12, and feeding back its real-time position change. This enables the camera module 10 to achieve closed-loop control of the position of the first moving frame 11 and the second moving frame 12 by controlling the current of the coil 14 according to its real-time position change, thereby driving the magnet 2. This further improves the control accuracy of the first moving frame 11 and the second moving frame 12.

[0128] Hall elements or tunnel magnetoresistive sensors can detect magnetic fields and have the advantages of simple structure, small size, fast feedback speed and low cost. When the position detection sensor 15 is a Hall element or tunnel magnetoresistive sensor, the space occupied by the position detection sensor 15 in the camera module 10 can be reduced, which is beneficial to the miniaturization design of the camera module 10.

[0129] In addition, such as Figure 15 As shown, the position detection sensor 15 can be placed near the coil 14 to improve its detection efficiency. Furthermore, two position detection sensors 15 can be provided to detect movement along the first direction X and the second direction Y respectively, thereby improving detection accuracy.

[0130] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the camera module 10 also includes an autofocus mechanism 3, which is used to achieve automatic focusing of the camera module 10. The autofocus mechanism 3 is located on the side of the first moving frame 11 away from the second moving frame 12.

[0131] In this embodiment, as Figure 1 and Figure 2 As shown, the autofocus mechanism 3 is set up so that the camera module 10 can achieve autofocus while stabilizing the image, thereby ensuring the shooting effect of the electronic device in various sports modes and improving the user experience.

[0132] The camera module 10 also includes a lens bracket 32, which is mounted on the first movable frame 11, and the lens assembly is mounted on the first movable frame 11 via the lens bracket 32.

[0133] In one specific embodiment, such as Figure 2 , Figure 16 and Figure 17 As shown, the autofocus mechanism 3 includes a focusing coil 31, which is disposed inside the magnet 2. The focusing coil 31 is an integral ring coil or is formed by combining multiple coils.

[0134] In this embodiment, as Figure 2 As shown, when the autofocus mechanism 3 is working, the focusing coil 31 is energized to generate magnetic flux, which interacts with the magnet 2, thereby driving the autofocus mechanism 3 to achieve the autofocus function.

[0135] The focusing coil 31 is sleeved on the lens bracket 32, thereby driving the lens bracket 32 ​​to move the lens assembly and achieve automatic focusing.

[0136] Depending on the specific structure and usage scenario of the camera module 10, such as Figure 16 and Figure 17As shown, the magnet 2, focusing coil 31, and anti-shake coil 14 can be arranged in different ways. Figure 16 In the specific embodiment shown, there are four magnets 2, which are arranged in a single-sided, single-pole configuration. The focusing coil 31 is an integrated ring coil located inside the magnet 2, and the image stabilization coil 14 is located at the bottom of the magnet 2. This structure has the advantages of simple structure, fewer components, and high compactness, which is beneficial for the miniaturization design of electronic devices and camera modules 10. Figure 17 In another specific embodiment, there are eight magnets 2, which are arranged in a single-sided bipolar configuration. The focusing coil 31 is formed by combining four coils and is located inside the magnet 2. The anti-shake coil 14 is located at the bottom of the magnet 2. In this structure, the current of the four coils constituting the focusing coil 31 can be controlled separately, which makes the control more precise and improves the control accuracy.

[0137] Of course, the magnet 2, focusing coil 31, and anti-shake coil 14 can also adopt other layouts, which are not limited here.

[0138] In addition, the autofocus mechanism 3 also includes a focusing circuit board assembly 33, which enables the electronic device to power the focusing coil 31 through the focusing circuit board assembly 33 to achieve its autofocus function.

[0139] This application also provides an electronic device, including a housing and a camera module 10 as described in any of the above embodiments, wherein the camera module 10 is installed inside the housing. Since the camera module 10 has the aforementioned technical effects, the electronic device including the camera module 10 also has corresponding technical effects, which will not be elaborated further here.

[0140] The above descriptions are merely specific implementations of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of this application should be covered within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

Claims

1. A camera module, characterized in that, The device includes a stabilization mechanism, which, along its thickness direction, comprises a first movable frame, a second movable frame, and a third fixed frame connected in sequence. The first movable frame is used to mount the lens assembly. One of the first movable frame and the second movable frame is provided with a first sliding groove and the other is provided with a first sliding part. The first sliding part can slide along the first sliding groove and the first sliding groove extends in a first direction. One of the second movable frame and the third fixed frame is provided with a second sliding groove, and the other is provided with a second sliding part. The second sliding part can slide along the second sliding groove, and the second sliding groove extends in a second direction. The first sliding groove includes a first positioning groove, which is used to cooperate with the first sliding part to restrict the sliding of the first sliding part along the second direction; The second sliding groove includes a second positioning groove, which is used to cooperate with the second sliding part to restrict the sliding of the second sliding part along the first direction; The first positioning groove and the second positioning groove are V-shaped grooves or trapezoidal grooves.

2. The camera module according to claim 1, characterized in that, The first slide groove portion further includes a first sliding groove, and the second slide groove portion further includes a second sliding groove; Along the second direction, the width of the first sliding groove is greater than the width of the first sliding part; Along the first direction, the width of the second sliding groove is greater than the width of the second sliding part.

3. The camera module according to claim 2, characterized in that, The first sliding groove and the second sliding groove are square grooves or U-shaped grooves.

4. The camera module according to claim 1, characterized in that, The first sliding part and the second sliding part are semi-cylindrical or hemispherical structures.

5. The camera module according to claim 4, characterized in that, The first movable frame, the second movable frame, and the third fixed frame are all integrally injection molded structures.

6. The camera module according to claim 4, characterized in that, The first movable frame further includes a first body, the second movable frame further includes a second body, and the third fixed frame further includes a third body; The first sliding part is detachably connected to the first body or the second body; The second sliding part is detachably connected to the second body or the third body.

7. The camera module according to any one of claims 1 to 6, characterized in that, The interior of the first slide groove and the second slide groove is provided with lubricating material; The lubricating material is grease or lubricating oil.

8. The camera module according to any one of claims 1 to 6, characterized in that, The camera module also includes a magnet, and the image stabilization mechanism also includes an image stabilization coil, which is used to drive the magnet to move along the first direction or the second direction. The magnet is fixed to the first moving frame, the anti-shake coil is fixed to the third fixed frame, and the anti-shake coil is arranged correspondingly to the magnet.

9. The camera module according to claim 8, characterized in that, The anti-shake mechanism also includes a magnetic suction piece, which is fixed to the third fixed frame on the side opposite to the second movable frame. The magnetic sheet can attract the magnet to press the third fixed frame against the first movable frame.

10. The camera module according to claim 8, characterized in that, The anti-shake mechanism also includes a position detection sensor, which is set on the third fixed frame and is used to detect changes in the magnetic field of the magnet to provide feedback on the positions of the first moving frame and the second moving frame. The position detection sensor is a Hall element or a tunnel magnetoresistive effect sensor.

11. The camera module according to claim 8, characterized in that, The camera module also includes an autofocus mechanism, which is used to achieve automatic focusing of the camera module; The autofocus mechanism is located on the side of the first moving frame opposite to the second moving frame.

12. The camera module according to claim 11, characterized in that, The autofocusing mechanism includes a focusing coil, which is disposed inside the magnet; The focusing coil is a single ring coil or a combination of multiple coils.

13. An electronic device, characterized in that, It includes a housing and a camera module as described in any one of claims 1 to 12, wherein the camera module is installed within the housing.

Images