Camera module and digital device thereof

Abstract

The application provides a camera module and a digital device, wherein the camera module comprises a moving unit, which drives a lens unit to move along an optical axis direction; elastic devices, which are uniformly distributed around the moving unit, are in contact with the moving unit to produce elastic deformation and apply extrusion force to the moving unit, the resultant force direction of the extrusion force is perpendicular to the optical axis; the elastic devices comprise first elastic devices and second elastic devices, the resultant force of the extrusion force of the first elastic devices on the moving unit is opposite to the resultant force of the extrusion force of the second elastic devices on the moving unit; when the moving unit moves along the optical axis direction with the lens unit, the movement of the moving unit in the direction perpendicular to the optical axis direction can be well limited, the movement of the moving unit in the direction perpendicular to the optical axis direction is stable, the stability of the movement of the camera module in the direction perpendicular to the optical axis direction is ensured, and the imaging quality of the camera is ensured.

Description

Technical Field

[0001] This invention relates to the field of camera module technology, and in particular to a camera module and digital device thereof. Background Technology

[0002] Currently, most mobile devices, such as smartphones and tablets, are equipped with camera modules. These modules convert light signals into electrical signals, record and save image information, and thus enable photo and video recording functions. Compared to traditional camera systems, cell phone camera modules (CCMs) are widely used in various next-generation portable camera devices due to their advantages such as miniaturization, low power consumption, low cost, and high image quality.

[0003] Currently, a camera module's structure includes a lens unit, a voice coil motor (VCM), an infrared cutoff filter, an image sensor, a flexible printed circuit board (FPC) or a printed circuit board (PCB), and a connector for connecting to the phone's motherboard. The voice coil motor is used to enable the lens unit's autofocus function. It typically includes a magnet and a coil. During operation, current is first passed through the coil. The energized coil cuts magnetic field lines in the magnetic field, generating electromagnetic force. The coil or magnet moves under this force, thus moving the lens unit connected to the voice coil motor. This adjusts the image distance and object distance of the camera module, resulting in a clear image. A Hall effect sensor is often incorporated into the voice coil motor to measure changes in the magnetic field. Based on these changes, the position of the coil or magnet is determined, achieving closed-loop control of the voice coil motor. Most commonly, the autofocus function in mobile phone cameras is entirely controlled by this driver.

[0004] With the rapid development of the smartphone industry, people's requirements for the imaging effect of mobile phone cameras are also gradually increasing. Focal length zoom range is a crucial factor affecting the imaging effect of mobile phone cameras. This requires the voice coil motor to be able to perform a large stroke drive, and this large stroke drive needs to maintain the stability of the camera within the stroke range, which places high demands on the stability of the voice coil motor. Summary of the Invention

[0005] The problem solved by this invention is to provide a camera module that can maintain stable movement of the lens unit over an ultra-long travel range.

[0006] To address the aforementioned problems, this invention provides a camera module, comprising: a moving unit that drives a lens unit to move along the optical axis; and elastic devices evenly distributed around the moving unit, which contact the moving unit to generate elastic deformation, thereby applying a compressive force to the moving unit, wherein the resultant force of the compressive force points towards and is perpendicular to the optical axis; the elastic devices include a first elastic device and a second elastic device, wherein the resultant force of the compressive force exerted by the first elastic device on the moving unit is opposite in direction to the resultant force of the compressive force exerted by the second elastic device on the moving unit.

[0007] Optionally, it also includes a base having support components evenly distributed around its perimeter. The support components include a first support component and a second support component, with the first elastic device installed inside the first support component and the second elastic device installed inside the second support component.

[0008] Optionally, the first support component has a first locking position and a second locking position. The first elastic device includes a first metal sheet that is locked onto the first locking position and a first rolling element that is locked onto the second locking position. One side of the first rolling element contacts the first metal sheet, and the other side of the first rolling element passes through the second locking position and contacts the guide rail of the moving unit. When the moving unit moves, the coil assembly of the moving unit forms an electrical connection with the first rolling element, the first metal sheet and the focus control chip through the guide rail.

[0009] Optionally, the first metal sheet also has an elastic structure located on the first metal sheet and locked within the first locking position.

[0010] Optionally, the second support component has a third locking position and a fourth locking position. The second elastic device includes a second metal sheet that is locked on the third locking position and a second rolling element that is locked on the fourth locking position. One side of the second rolling element contacts the second metal sheet, and the other side of the second rolling element passes through the fourth locking position and contacts the guide rail of the moving unit. When the moving unit moves, the coil assembly of the moving unit forms an electrical connection with the second rolling element, the second metal sheet and the focus control chip through the guide rail.

[0011] Optionally, the second rolling element is a metal column or a plurality of side-by-side metal balls.

[0012] Optionally, the moving unit includes a carrier having a through hole corresponding to the support component. After the carrier is installed on the base, the support component passes through the through hole.

[0013] Optionally, the carrier has a lens receiving cavity that extends through and protrudes from the surface of the carrier, and the lens unit is fitted inside the lens receiving cavity.

[0014] Optionally, a lens protective cover is also included, the lens protective cover having a hollow cavity inside, the lens protective cover being fitted onto the top of the lens receiving cavity, so that when the lens unit moves, the lens unit moves into the hollow cavity to isolate it from the outside.

[0015] Optionally, it also includes an iron shell, which is arranged around the base to house the moving unit, and the moving unit moves up and down along the optical axis inside the iron shell.

[0016] Optionally, a mirror ring is also included, which is fixedly mounted on the top of the iron shell.

[0017] Optionally, a flexible connection mechanism is also included, which is located between the lens ring and the metal shell and connected to the bottom of the lens protective cover. The flexible connection mechanism forms a space with the lens protective cover and the lens ring to prevent foreign objects that may affect the optical performance of the camera module from entering.

[0018] Optionally, the mirror ring includes a bearing component located on the flexible connection mechanism, an elastic component located within the bearing component, and a third rolling element located between the elastic component and the bearing component.

[0019] Optionally, the elastic component includes an elastic open ring, and the bearing component includes an inner ring wall, an outer ring wall, and an annular protrusion located between the inner ring wall and the outer ring wall. The annular protrusion is provided with a dispensing groove and an opening. The dispensing groove is used to accommodate glue to adhere the ring body of the elastic open ring. One side of the third rolling element contacts the elastic open ring, and the elastic open ring is in an elastically movable state. The third rolling element is disposed in the opening, and the elastic open ring is disposed between the outer ring wall and the annular protrusion.

[0020] Optionally, the number of openings is three or more.

[0021] Optionally, it also includes at least one locking structure located on the base. The locking structure includes a coil unit and a magnetic unit. The magnetic unit is disposed facing the coil unit. When the coil unit is energized, the magnetic field generated by the coil unit interacts with the magnetic field of the magnetic unit to drive relative movement between the coil unit and the magnetic unit, thereby locking or unlocking the moving unit.

[0022] Optionally, the locking structure further includes a fixing part, which includes a fixing base and a slide rail located on the fixing base, the slide rail extending along a direction parallel to the movement direction of the magnetic unit or the coil unit.

[0023] Optionally, the locking structure further includes an elastic support portion, one end of which is fixedly disposed with the magnetic unit.

[0024] Optionally, when the coil unit is energized, and relative movement occurs between the coil unit and the magnetic unit, the elastic support portion is compressed, and the moving unit is unlocked.

[0025] Optionally, when the coil unit is de-energized, the magnetic field of the coil unit disappears, the magnetic unit is reset by the rebound force of the elastic support, and the moving unit is locked.

[0026] Optionally, the locking structure further includes a locking slider, and a sliding element is provided between the locking slider and the slide rail.

[0027] Optionally, the locking slider has a receiving cavity, and the magnetic unit is detachably connected to the receiving cavity.

[0028] Optionally, the locking slider has a locking tongue located on the outer wall of the receiving cavity.

[0029] Optionally, the locking structure is located on the base between adjacent first support components, or on the base between adjacent second support components, or simultaneously on the base between adjacent first support components and the base between adjacent second support components.

[0030] Optionally, it also includes multiple magnets, which are straight bars and are centrally symmetrically arranged on at least two opposite sides of the base, and the locking structure is arranged on the other side or both sides of the base.

[0031] Optionally, the sidewall of the carrier also has a groove, and the locking tongue is located in the groove when the moving unit is released and unlocked.

[0032] Optionally, the base also has a wire embedding layer, which is embedded inside the base. One end of the wire embedding layer is connected to the first metal sheet and the second metal sheet, and the other end of the wire embedding layer is connected to the focus control chip through a printed circuit board.

[0033] Accordingly, the present invention also provides a digital device, comprising: a main body; and the aforementioned camera module, wherein the camera module is located within the main body.

[0034] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0035] In the camera module provided in the embodiments of the present invention, elastic devices are evenly distributed around the moving unit, and generate elastic deformation upon contact with the moving unit to apply a compressive force to the moving unit. The resultant force of the compressive force points towards and is perpendicular to the optical axis. The elastic device includes a first elastic device and a second elastic device. The resultant force of the compressive force of the first elastic device on the moving unit is opposite in direction to the resultant force of the compressive force of the second elastic device on the moving unit. In this way, when the moving unit moves along the optical axis with the lens unit, the movement of the moving unit in the direction perpendicular to the optical axis can be well restricted, thus making the movement of the moving unit in the direction perpendicular to the optical axis very stable, thereby ensuring the stability of the long-stroke camera module in the direction perpendicular to the optical axis.

[0036] Furthermore, it also includes the mirror ring, which comprises a bearing component located on the flexible connection mechanism, an elastic component located within the bearing component, and a third rolling component located between the elastic component and the bearing component. The mirror ring is distributed in the moving direction of the moving unit, and the elastic device is evenly distributed around the moving unit in a direction perpendicular to the moving unit. The elastic device contacts the moving unit and generates elastic deformation. The mirror ring and the elastic device are correspondingly arranged to ensure the stability of the optical axis of the camera module over its ultra-long stroke, thereby ensuring the imaging quality of the camera.

[0037] Furthermore, it also includes at least one locking structure located on the base. The locking structure includes a coil unit and a magnetic unit, with the magnetic unit facing the coil unit. When the coil unit is energized, the magnetic field generated by the coil unit is opposite in direction to the magnetic field of the magnetic unit, thereby driving relative movement between the coil unit and the magnetic unit to lock or unlock the moving unit. This locking structure can be used independently in conjunction with the moving unit and the elastic device, allowing the locking structure to be tested separately when using the camera module, thus helping to improve product yield.

[0038] Furthermore, by rationally setting the distribution relationship of the locking structure, the magnet, and the electrical connection parts on the base, the structure of the camera module is made compact, which can reduce the size and thickness of the camera module and adapt to the development trend of thinner and lighter digital products.

[0039] Furthermore, when the coil unit is de-energized, the magnetic field of the coil unit disappears, the magnetic unit is driven to reset by the rebound force of the elastic support, and the moving unit is locked. In this way, when the camera module is not working, the existence of the locking structure can restrict the movement of the camera module in the direction perpendicular to the optical axis, thus playing a protective role for the camera module. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a camera module in one embodiment of the present invention;

[0041] Figure 2 This is an exploded view of a camera module according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the base structure in one embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the assembly of the carrier and the base in one embodiment of the present invention;

[0044] Figure 5 This is an exploded view of the locking structure in one embodiment of the present invention;

[0045] Figure 6 for Figure 1 A bottom view after assembly;

[0046] Figure 7 This is a cross-sectional view of the camera module in a direction parallel to the optical axis in one embodiment of the present invention;

[0047] Figure 8 This is an enlarged view of the first elastic device and the second elastic device in one embodiment of the present invention. Detailed Implementation

[0048] As described in the background section, providing a solution that can effectively restrict the movement of a camera module in the direction perpendicular to the optical axis during operation, thereby improving the stability of the camera module, is one of the urgent problems to be solved in the field of camera modules.

[0049] To address the stability issue of camera modules during operation, this invention provides a camera module. When the moving unit moves along the optical axis with the lens unit, the movement of the moving unit in the direction perpendicular to the optical axis is effectively restricted. This ensures the stability of the camera module's movement in the direction perpendicular to the optical axis, thereby guaranteeing the image quality of the camera.

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] Figure 1 This is a schematic diagram of the structure of a camera module in one embodiment of the present invention; Figure 2 This is an exploded view of a camera module according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the base structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly of the carrier and the base in one embodiment of the present invention; Figure 5 This is an exploded view of the locking structure in one embodiment of the present invention; Figure 6 for Figure 1 A bottom view after assembly; Figure 7 This is a cross-sectional view of the camera module in a direction parallel to the optical axis in one embodiment of the present invention; Figure 8 This is an enlarged view of the first elastic device and the second elastic device in one embodiment of the present invention.

[0052] Figure 7 To facilitate observation of the relationship between the elastic device and the moving unit, some components on the camera module have been omitted.

[0053] Please refer to Figures 1 to 4 A camera module 100 includes a moving unit 101 and an elastic device 102.

[0054] The moving unit 101 drives the lens unit to move along the optical axis;

[0055] The elastic device 102 is evenly distributed around the moving unit 101, and comes into contact with the moving unit 101 to generate elastic deformation, thereby applying a compressive force to the moving unit 101. The resultant force of the compressive force points towards the optical axis and is perpendicular to the optical axis. The elastic device 102 includes a first elastic device 103 and a second elastic device 104. The resultant force of the compressive force of the first elastic device 103 on the moving unit 101 is opposite in direction to the resultant force of the compressive force of the second elastic device 104 on the moving unit 101.

[0056] In this embodiment, since the elastic devices 102 are uniformly distributed around the moving unit 101, when the elastic devices 102 come into contact with the moving unit 101 and undergo elastic deformation, the elastic devices 102 apply a compressive force to the moving unit 101. The resultant force of this compressive force points towards the optical axis and is perpendicular to the optical axis. At the same time, since the compressive force comes from the first elastic device 103 and the second elastic device 104, the resultant force of the compressive force of the first elastic device 103 on the moving unit 101 is opposite in direction to the resultant force of the compressive force of the second elastic device 104 on the moving unit 101. This ensures that when the moving unit 101 moves along the optical axis, the presence of the compressive force in the direction perpendicular to the optical axis restricts the movement of the moving unit 101 in the direction perpendicular to the optical axis, thereby improving the stability of the movement of the moving unit 101 in the direction perpendicular to the optical axis and ultimately improving the imaging quality of the camera module 100.

[0057] Please continue to refer to this. Figure 1 It also includes the base 105.

[0058] In this embodiment, the base 105 has support components evenly distributed around its perimeter. The support components include a first support component 106 and a second support component 107. The first elastic device 103 is installed in the first support component 106, and the second elastic device 104 is installed in the second support component 107.

[0059] In this embodiment, the base 105 is used to support the moving unit 101, and the moving unit 101 moves relative to the base 105 along the optical axis.

[0060] In this embodiment, the first support component 106 has a first locking position 108 and a second locking position 109. The first elastic device 103 includes a first metal piece 110 locked on the first locking position 108 and a first rolling element 111 locked on the second locking position 109. One side of the first rolling element 111 is fixed on the first metal piece 110, and the other side of the first rolling element 111 passes through the second locking position 109 and contacts the coil assembly of the moving unit 101. When the moving unit 101 moves, the coil assembly of the moving unit 101 forms an electrical connection with the focus control chip through the first rolling element 111 and the first metal piece 110.

[0061] In this embodiment, the second support component 107 has a third locking position 112 and a fourth locking position 113. The second elastic device 104 includes a second metal piece 114 that is locked on the third locking position 112 and a second rolling element 115 that is locked on the fourth locking position 113. One side of the second rolling element 115 is fixed on the second metal piece 114, and the other side of the second rolling element 115 passes through the fourth locking position 113 and contacts the coil assembly of the moving unit 101. When the moving unit 101 moves, the coil assembly of the moving unit 101 forms an electrical connection with the focus control chip through the second rolling element 115 and the second metal piece 114.

[0062] In this embodiment, the coil assembly is further provided with a guide rail, which is adapted to make electrical contact with the first rolling element 111 and the second rolling element 115 respectively, and to provide the first rolling element 111 and the second rolling element 115 with rolling stroke on one side of the coil assembly.

[0063] In this embodiment, the first metal piece 110 and the second metal piece 114 are straight pieces, which makes it easier for the first metal piece to be inserted vertically into the first slot 108 and the second metal piece to be inserted vertically into the third slot 112, thereby facilitating equipment, simplifying the installation process, and improving efficiency.

[0064] In this embodiment, since the first elastic device 103 is located on the first support component 106 and the second elastic device 104 is located on the second support component 107, and since the first support component 106 and the second support component 107 are evenly distributed around the moving unit 101, the moving unit 101 is uniformly subjected to compressive force in all four directions in the direction perpendicular to the optical axis. This enhances the torsional resistance of the moving unit 101, thereby enhancing the stability of the moving unit 101 in the direction perpendicular to the optical axis.

[0065] In this embodiment, the first metal sheet 110 also has an elastic structure 116, and the elastic structure 116 and the first rolling element 111 are respectively located on two opposite surfaces of the first metal sheet 110.

[0066] In this embodiment, the first metal sheet 110 has the elastic structure 116, which can provide lateral force to ensure that the moving unit 101 can move along the first support component 106.

[0067] In this embodiment, please refer to Figure 8 The second rolling element 115 consists of multiple metal balls arranged side by side, specifically two metal balls.

[0068] In other embodiments, the second rolling element 115 may also be a metal column or three or four metal balls arranged side by side, depending on actual needs.

[0069] In this embodiment, the purpose of using two parallel metal balls in the second rolling element 115 is to increase the contact area between the second rolling element 115 and the coil assembly. On the one hand, this can increase the conductivity between the second rolling element 115 and the coil assembly. On the other hand, the increased contact area between the second rolling element 115 and the coil assembly enhances the difficulty of twisting the lens unit in the direction perpendicular to the optical axis, thereby reducing the twist angle of the lens unit in the direction perpendicular to the optical axis and improving the stability of the lens unit in the direction perpendicular to the optical axis.

[0070] In this embodiment, the base 105 also has a wire embedding layer (not shown in the figure). The wire embedding layer is embedded inside the base 105. One end of the wire embedding layer is connected to the first metal sheet 110 and the second metal sheet 114, and the other end of the wire embedding layer is connected to the focus control chip through a PCB circuit.

[0071] Please refer to the reference. Figure 1 , Figure 5 and Figure 6 It also includes at least one locking structure 117.

[0072] In this embodiment, when the camera module 100 is not working, the locking structure 117 can be used to lock the moving unit 101 in the direction perpendicular to the optical axis, which helps to enhance the protection of the moving unit 101.

[0073] In this embodiment, the locking structure 117 is located on the base 105, and is located on both sides of the base 105 opposite to the circuit device 118 on the base 105.

[0074] The circuit device 118 includes Hall effect devices, etc.

[0075] The locking structure 117 includes a coil unit 119 and a magnetic unit 120. The magnetic unit 120 is disposed opposite to the coil unit 119. When the coil unit 119 is energized, the magnetic field generated by the coil unit 119 is opposite to the magnetic field of the magnetic unit 120, which is used to drive relative movement between the coil unit 119 and the magnetic unit 120 to lock or unlock the moving unit 101.

[0076] In this embodiment, when energized, the magnetic field generated by the coil unit 119 and the magnetic field of the magnetic unit 120 are in opposite directions, thereby forcing the coil unit 119 and the magnetic unit 120 to move relative to each other. This locking structure 117 has a simple and stable structure, and at the same time, the reliability of the electrical connection is better.

[0077] In this embodiment, the number of locking structures 117 is one.

[0078] In other embodiments, the number of locking structures 117 may be multiple, and the number of locking structures is selected according to the actual design of the camera module 100 structure.

[0079] In this embodiment, the locking structure 117 is located on the base 105 between adjacent first support components 106.

[0080] In other embodiments, the locking structure 117 may also be located on the base 105 between adjacent second support components 107, or simultaneously on the base 105 between adjacent first support components 106 and the base 105 between adjacent second support components 107.

[0081] In this embodiment, please continue to refer to Figure 5 The locking structure 117 further includes a fixing part 121, which includes a fixing base 122 and a slide rail 123 located on the fixing base 122. The slide rail 123 extends along a direction parallel to the movement direction of the magnetic unit 120 or the coil unit 119.

[0082] In this embodiment, a slider 124 is also provided inside the slide rail 123. One side of the slider 124 contacts the slide rail 123 and is used to slide within the slide rail 123. The other side of the slider 124 is fixed relative to the magnetic unit 120 or the coil unit 119, thereby driving the magnetic unit 120 or the coil unit 119 to move.

[0083] Please continue to refer to this. Figure 5 The locking structure 117 also includes the locking slider 125.

[0084] In this embodiment, the locking slider 125 has a receiving cavity 126, the magnetic unit 120 is detachably connected to the receiving cavity 126, and the other side of the sliding member 124 is engaged in the locking groove 127 on the locking slider 125, so that when the sliding member 124 slides in the slide rail 123, it can drive the magnetic unit 120 to slide relative to the coil unit 119.

[0085] In other embodiments, the magnetic unit 120 may be fixed in place, and the coil unit 119 may slide relative to the magnetic unit 120.

[0086] Please continue to refer to this. Figure 5 The locking structure 117 also includes an elastic support portion 128.

[0087] One end of the elastic support 128 is fixedly disposed with the magnetic unit 120.

[0088] In this embodiment, one end of the elastic support 128 is connected to the side wall of the receiving cavity 126, thereby forming a relatively fixed relationship between the magnetic units 120.

[0089] In this embodiment, the elastic support portion 128 is bonded to the side wall of the receiving cavity 126.

[0090] In other embodiments, the elastic support 128 may also be engaged with the sidewall of the receiving cavity 126.

[0091] In this embodiment, when the coil unit 119 is energized, and relative movement occurs between the coil unit 119 and the magnetic unit 120, the other end of the elastic support portion 128 is compressed, the elastic support portion 128 is in a compressed state, and the moving unit 101 is unlocked.

[0092] In this embodiment, when the coil unit 119 is de-energized, the magnetic field of the coil unit 119 disappears, the magnetic unit 120 is reset by the rebound force of the elastic support part 128, and the moving unit 101 is locked.

[0093] Please continue to refer to this. Figure 5 and Figure 6 The locking slider 125 has a locking tongue 129.

[0094] In this embodiment, the locking tongue 129 is located on the outer wall of the receiving cavity 126.

[0095] When the coil unit 119 is de-energized, the locking tongue 129 slides onto the moving unit 101 to lock the moving unit 101; when the coil unit 119 is energized, the locking tongue 129 slides into the groove 152 on the moving unit 101 to unlock the moving unit 101.

[0096] Specifically, in this embodiment, the side wall of the carrier also has a groove 152, and when the moving unit 101 is unlocked, the locking tongue 129 is located in the groove 152.

[0097] In this embodiment, the locking structure 117 further includes a housing 130. One side of the housing 130 is provided with a mounting groove 131. The locking slider 125 is installed in the mounting groove 131. When the coil unit 119 and the magnetic unit 120 move relative to each other, the other end of the elastic support part 128 abuts against the side wall of the mounting groove 131 and is compressed. The mounting groove 131 is provided with a through hole 132, and the locking tongue 129 passes through the through hole 132.

[0098] In this embodiment, the locking structure 117 further includes a reinforcing magnetic sheet 133 adsorbed on the surface of the magnetic unit 120 of the magnet unit, and the reinforcing magnetic sheet 133 is located between the magnetic unit 120 of the magnet unit and the receiving cavity 126.

[0099] In this embodiment, the reinforcing magnetic sheet 133 is used to increase the magnetism of the magnetic unit 120.

[0100] In this embodiment, an adsorption magnetic sheet 152 is also included. The adsorption magnetic sheet 152 is located on the fixed base 122 and is distributed on two opposite sides of the fixed base 122 along with the slide rail 123. It is used to adsorb the magnetic unit 120 onto the fixed base 122.

[0101] Please continue to refer to this. Figure 2 and Figure 4 The mobile unit 101 includes a carrier 134.

[0102] In this embodiment, the carrier 134 has a through hole 135 corresponding to the support component. After the carrier 134 is installed on the base 105, the support component passes through the through hole 135, thereby fixing the moving unit 101 relatively between the base 105.

[0103] Please continue to refer to this. Figure 2 and Figure 6 It also includes multiple magnets 136.

[0104] In this embodiment, the magnet 136 is a straight bar and is centrally symmetrically arranged on at least two opposite sides of the base 105, and the locking structure 117 is arranged on the other side or both sides of the base 105.

[0105] In this embodiment, the magnet 136 is a straight bar, which is easy to process and easy to assemble.

[0106] Please continue to refer to this. Figure 2 It also includes the Iron Shell 137.

[0107] In this embodiment, the iron shell 137 is arranged around the base 105 to accommodate the moving unit 101, the magnet 136 and the locking structure 117. The moving unit 101 moves up and down along the optical axis inside the iron shell 137.

[0108] Please continue to refer to this. Figure 1 The carrier 134 has a lens receiving cavity 138 that extends through and protrudes from the surface of the carrier 134, and the lens unit 139 of the moving unit 101 is sleeved in the lens receiving cavity 138.

[0109] Please continue to refer to this. Figure 2 It also includes a lens cover 140.

[0110] The lens protective sleeve 140 has a hollow cavity inside. The lens protective sleeve 140 is fitted onto the top of the lens receiving cavity 138, so that when the lens unit 139 moves, the lens unit 139 moves into the hollow cavity to isolate it from the outside.

[0111] Please continue to refer to this. Figure 2 It also includes Mirror Ring 141.

[0112] The mirror ring 141 is fixedly mounted on the top of the iron shell 137.

[0113] In this embodiment, the mirror ring 141 is distributed in the moving direction of the moving unit 101, and the elastic device 102 is evenly distributed around the moving unit 101 in a direction perpendicular to the moving unit 101. The elastic device 102 comes into contact with the moving unit and generates elastic deformation. The mirror ring 141 and the elastic device 102 are correspondingly arranged to ensure the stability of the optical axis of the camera module over its ultra-long stroke, thereby ensuring the imaging quality of the camera.

[0114] In this embodiment, a flexible connection mechanism 142 is also included. The flexible connection mechanism 142 is located between the lens ring 141 and the iron shell 137 and is connected to the bottom of the lens protective cover 140. The flexible connection mechanism 142, the lens protective cover 140, and the lens ring 141 form a space to prevent foreign objects from affecting the optical performance of the camera module.

[0115] The foreign matter includes impurities such as water, oil, and dust that affect the clarity of the lens unit.

[0116] In this embodiment, the mirror ring 141 includes a bearing component 143 located on the flexible connection mechanism 142, an elastic component 144 located within the bearing component 143, and a third rolling element 145 located between the elastic component 144 and the bearing component 143.

[0117] In this embodiment, when the lens unit 139 is subjected to force to one side, the elastic force of the elastic member 144 returns it to its original position so as to keep the movement direction of the lens unit 139 consistent with the optical axis direction.

[0118] In this embodiment, the elastic component 144 includes an elastic open ring, and the bearing component 143 includes an inner ring wall 146, an outer ring wall 147, and an annular protrusion 148 located between the inner ring wall 146 and the outer ring wall 147. The annular protrusion 148 is provided with a dispensing groove (not shown in the figure) and an opening 149. The dispensing groove is used to accommodate glue to adhere the ring body of the elastic open ring. One side of the third rolling element 145 contacts the elastic open ring, and the elastic open ring is in an elastically movable state. The third rolling element 145 is disposed within the opening 149, and the elastic open ring is disposed between the outer ring wall 147 and the annular protrusion 148.

[0119] In this embodiment, the number of openings 149 is greater than or equal to three.

[0120] In this embodiment, the third rolling element 145 is a steel ball, and the friction between the steel ball and the moving part is rolling friction, which has a small coefficient of friction and can make the moving part move more smoothly.

[0121] Flexible connection mechanism, lens protective cover flexible connection mechanism.

[0122] In this embodiment, a protective glass 150 and a protective shell 151 are also included, which serve to seal the lens unit 139 and completely enclose the lens unit 139 inside, isolating it from the external environment.

[0123] Accordingly, the present invention also provides a digital device, including: a main body; and the aforementioned camera module 100, wherein the camera module 100 is located within the main body.

[0124] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A camera module, characterized in that, include: A moving unit drives the lens unit to move along the optical axis. The moving unit includes a carrier, and the side wall of the carrier also has a groove. A base for supporting the mobile unit; The elastic device is evenly distributed around the moving unit, and comes into contact with the moving unit to generate elastic deformation, so as to apply a compressive force to the moving unit. The resultant force of the compressive force is directed towards the optical axis and is perpendicular to the optical axis. The elastic device includes a first elastic device and a second elastic device, wherein the resultant force of the extrusion force of the first elastic device on the moving unit is opposite in direction to the resultant force of the extrusion force of the second elastic device on the moving unit. At least one locking structure, the locking structure being located on the base, the locking structure comprising: Coil unit; A magnetic unit is disposed facing the coil unit. When the coil unit is energized, the magnetic field generated by the coil unit interacts with the magnetic field of the magnetic unit to drive relative movement between the coil unit and the magnetic unit, thereby locking or unlocking the moving unit. The fixing part includes a fixing base and a slide rail located on the fixing base, the slide rail extending along a direction parallel to the movement direction of the magnetic unit or the coil unit; An elastic support portion, one end of which is fixedly disposed to the magnetic unit; A locking slider having a locking tongue, which is located within the groove when the moving unit is released and unlocked.

2. The camera module as described in claim 1, characterized in that, It also includes a base with support components evenly distributed around its perimeter. The support components include a first support component and a second support component. The first elastic device is installed inside the first support component, and the second elastic device is installed inside the second support component.

3. The camera module as described in claim 2, characterized in that, The first support component has a first locking position and a second locking position. The first elastic device includes a first metal sheet that is locked onto the first locking position and a first rolling element that is locked onto the second locking position. One side of the first rolling element is in contact with the first metal sheet, and the other side of the first rolling element passes through the second locking position and contacts the guide rail of the moving unit. When the moving unit moves, the coil assembly of the moving unit forms an electrical connection with the first rolling element, the first metal sheet and the focus control chip through the guide rail.

4. The camera module as described in claim 3, characterized in that, The first metal sheet also has an elastic structure located on the first metal sheet and locked in the first locking position.

5. The camera module as described in claim 3, characterized in that, The second support component has a third locking position and a fourth locking position. The second elastic device includes a second metal sheet that is locked on the third locking position and a second rolling element that is locked on the fourth locking position. One side of the second rolling element is in contact with the second metal sheet, and the other side of the second rolling element passes through the fourth locking position and contacts the guide rail of the moving unit. When the moving unit moves, the coil assembly of the moving unit forms an electrical connection with the second rolling element, the second metal sheet and the focus control chip through the guide rail.

6. The camera module as described in claim 5, characterized in that, The second rolling element is a metal column or multiple metal balls arranged side by side.

7. The camera module as described in claim 2, characterized in that, The carrier has a through hole corresponding to the support component. After the carrier is installed on the base, the support component passes through the through hole.

8. The camera module as described in claim 7, characterized in that, The carrier has a lens receiving cavity that extends through and protrudes from the surface of the carrier, and the lens unit is fitted inside the lens receiving cavity.

9. The camera module as described in claim 8, characterized in that, It also includes a lens protective cover, which has a hollow cavity inside. The lens protective cover is fitted onto the top of the lens receiving cavity, so that when the lens unit moves, the lens unit moves into the hollow cavity to isolate it from the outside.

10. The camera module as described in claim 9, characterized in that, It also includes an iron shell, which is arranged around the base to house the moving unit, which moves up and down along the optical axis inside the iron shell.

11. The camera module as described in claim 10, characterized in that, It also includes a mirror ring, which is fixedly mounted on the top of the iron shell.

12. The camera module as described in claim 11, characterized in that, It also includes a flexible connection mechanism, which is located between the lens ring and the iron shell and connected to the bottom of the lens protective cover. The flexible connection mechanism forms a space with the lens protective cover and the lens ring to prevent foreign objects that may affect the optical performance of the camera module from entering.

13. The camera module as described in claim 12, characterized in that, The mirror ring includes a bearing component located on the flexible connection mechanism, an elastic component located within the bearing component, and a third rolling element located between the elastic component and the bearing component.

14. The camera module as described in claim 13, characterized in that, The elastic component includes an elastic open ring, and the bearing component includes an inner ring wall, an outer ring wall, and an annular protrusion located between the inner ring wall and the outer ring wall. The annular protrusion is provided with a dispensing groove and an opening. The dispensing groove is used to contain glue to adhere the ring body of the elastic open ring. One side of the third rolling element contacts the elastic open ring, and the elastic open ring is in an elastically movable state. The third rolling element is disposed in the opening, and the elastic open ring is disposed between the outer ring wall and the annular protrusion.

15. The camera module as described in claim 14, characterized in that, The number of openings is greater than or equal to three.

16. The camera module as described in claim 1, characterized in that, When the coil unit is energized, and relative movement occurs between the coil unit and the magnetic unit, the elastic support is compressed, and the moving unit is unlocked.

17. The camera module as described in claim 1, characterized in that, When the coil unit is de-energized, the magnetic field of the coil unit disappears, the magnetic unit is reset by the rebound force of the elastic support, and the moving unit is locked.

18. The camera module as described in claim 1, characterized in that, A sliding element is provided between the locking slider and the slide rail.

19. The camera module as described in claim 1, characterized in that, The locking slider has a receiving cavity, and the magnetic unit is detachably connected to the receiving cavity.

20. The camera module as described in claim 19, characterized in that, The latch is located on the outer wall of the receiving cavity.

21. The camera module as described in claim 2, characterized in that, The locking structure is located on the base between adjacent first support components, or on the base between adjacent second support components, or simultaneously on the base between adjacent first support components and the base between adjacent second support components.

22. The camera module as described in claim 1, characterized in that, It also includes multiple magnets, which are straight bars and are centrally symmetrically arranged on at least two opposite sides of the base, and the locking structure is arranged on the other side or both sides of the base.

23. The camera module as described in claim 5, characterized in that, The base also has a wire embedding layer, which is embedded inside the base. One end of the wire embedding layer is connected to the first metal sheet and the second metal sheet, and the other end of the wire embedding layer is connected to the focus control chip through a printed circuit board.

24. A digital device, characterized in that, include: Main body of the fuselage; The camera module as described in any one of claims 1 to 23, wherein the camera module is located within the main body of the device.

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