Camera module and terminal device

Abstract

The application discloses a camera module and a terminal device, and belongs to the technical field of electronics. The camera module comprises a lens component, a base, a rotating component and a driving component. The driving component can drive the lens component to move through the rotating component, so that the camera module can realize a zooming function. Without using a voice coil motor, the lens component can be moved. Thus, after the camera module in the embodiment of the application is integrated in the terminal device, a magnetic field generated by other elements in the terminal device cannot interfere with the movement of the lens component, so that the lens component can always normally move under the driving of the driving component, and thus the reliability of the camera module can be effectively improved.

Description

Technical Field

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

[0002] With the continuous development of electronic technology, terminal devices equipped with camera modules are becoming increasingly common. Camera modules enable terminal devices to have functions such as taking photos and videos, greatly enriching and expanding the scope of use of terminal devices.

[0003] Currently, to enable zoom functionality in a camera module, the lens within the module needs to move along its optical axis. Therefore, there is an urgent need for a camera module capable of controlling lens movement. Summary of the Invention

[0004] This application provides a camera module and a terminal device. The technical solution is as follows: On the one hand, a camera module is provided, including: a lens component, a base, a rotating component, and a driving component; The lens component is located on the base and is movably connected to the base; The rotating component is located between the lens component and the base, and the rotating component abuts against the side of the lens component closest to the base; The driving component is fixed to the base and connected to the rotating component; The driving component is configured to drive the rotating component to rotate, thereby causing the lens component to move in the direction of the optical axis of the lens component.

[0005] Optionally, the driving component includes: a bracket, a rotating shaft, a pulling element, and a driving element; The bracket is fixed to the base; the rotating shaft is movably connected to the bracket and fixedly connected to the rotating component; one end of the pulling element is fixedly connected to the side wall of the rotating shaft, and the other end is fixedly connected to the bracket; the driving element is fixed to the bracket. The driving element is configured to control the pulling element to apply a pulling force to the side wall of the rotating shaft, so as to drive the rotating shaft to rotate in a direction closer to the pulling element.

[0006] Optionally, there are two pulling elements, and the two pulling elements are located on both sides of the rotating shaft respectively; The drive element is configured to: control the length of one of the two pulling elements to shorten, causing the rotating axis to rotate toward the direction of the shortened pulling element, and causing the length of the other pulling element to be lengthened.

[0007] Optionally, the pulling element is made of shape memory metal, and the driving element includes two heating units corresponding one-to-one with the two pulling elements, each heating unit being used to heat the corresponding pulling element to shorten the length of the corresponding pulling element.

[0008] Optionally, the bracket has two heating chambers corresponding to the two heating units, and a heat insulation plate located between the two heating chambers, with each heating unit located in its corresponding heating chamber; The orthographic projection of each of the pulling elements on the bracket is located within the area of ​​the corresponding heating cavity.

[0009] Optionally, the heating unit includes at least one of a heating coil, a heating resistor, and a PTC heater.

[0010] Optionally, one end of the pulling element is connected to the side wall of the rotating shaft at a location on the side of the rotating shaft opposite to the base.

[0011] Optionally, there are multiple driving components and multiple rotating components, with each driving component corresponding to one of the multiple rotating components. The multiple driving components are evenly distributed between the lens component and the base, and each driving component is connected to a corresponding rotating component.

[0012] Optionally, the rotating component has a protruding structure on the side near the lens component; The driving component is configured to drive the rotating component to rotate, causing the protruding structure to rotate; Specifically, when the end of the protruding structure rotates toward the lens component, the protruding structure drives the lens component to move away from the base; when the end of the protruding structure separates from the lens component, the lens component moves toward the base.

[0013] Optionally, the lens component includes: a support portion and a lens, the support portion having a mounting through hole, and the lens being fixed within the mounting through hole; The camera module further includes: a housing fixed on the base, wherein the supporting part, the rotating part and the driving part are all located inside the housing, and part of the lens is located inside the housing and part is located outside the housing; The supporting part has a first magnet on the side opposite to the base, and the inner wall of the housing has a second magnet that cooperates with the first magnet. The orthographic projection of the first magnet on the base and the orthographic projection of the second magnet on the base at least partially overlap. When the end of the protruding structure separates from the lens component, the first magnet and the second magnet repel each other.

[0014] Optionally, the side of the support portion facing away from the base also has a first guide structure, and the inner wall of the housing also has a second guide structure that cooperates with the first guide structure. The length direction of the first guide structure and the length direction of the second guide structure are both parallel to the optical axis of the lens component.

[0015] Optionally, one of the first guide structure and the second guide structure is a guide hole and the other is a guide rod, wherein at least a portion of the guide rod is located within the guide hole.

[0016] Optionally, one of the first magnet and the second magnet is located inside the guide hole, and the other is fixedly connected to the end of the guide rod near the guide hole.

[0017] Optionally, the camera module further includes an elastic component, which is fixedly connected to the lens component and the base respectively.

[0018] Optionally, the base has a plurality of protrusions on the side near the lens component, and the height of the protrusions is greater than the maximum distance between the lens component and the base; The elastic element includes a plurality of tension springs corresponding one-to-one with the plurality of protrusions, one end of each tension spring being fixedly connected to the side of the protrusion away from the base, and the other end being fixedly connected to the side of the lens component close to the base.

[0019] On the other hand, a terminal device is provided, including any of the above-mentioned camera modules.

[0020] The beneficial effects of the technical solutions provided in this application include at least the following: A camera module includes a lens component, a base, a rotating component, and a driving component. When the camera module needs to zoom, the driving component in the camera module can drive the rotating component to rotate. Since the rotating component can abut against the side of the lens component near the base, the rotating component can drive the lens component to move in the direction of the optical axis of the lens component. In this way, the driving component can drive the lens component to move through the rotating component, so that the camera module can achieve the zoom function. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application; Figure 2 yes Figure 1 An exploded view of the camera module is shown. Figure 3 This is a schematic diagram of the structure of a base in a camera module provided in an embodiment of this application; Figure 4 yes Figure 3 A schematic diagram showing the camera module on the other side; Figure 5 This is a schematic diagram of another camera module structure according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a support portion provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a shell provided in an embodiment of this application; Figure 8 yes Figure 6 The shown support part and Figure 7 The diagram shows a cross-sectional view of the assembled housing. Figure 9 This is a schematic diagram of the structure of a driving component provided in an embodiment of this application; Figure 10 This is a rendering of a driving component driving a rotating shaft component to rotate, provided in an embodiment of this application. Figure 11 This is a schematic diagram of the structure of another camera module provided in the embodiments of this application. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0024] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application. Figure 2 yes Figure 1 An exploded view of the camera module is shown. The camera module 000 may include: a lens component 100, a base 200, a rotating component 300, and a driving component 400.

[0025] The lens component 100 in the camera module 000 can be located on the base 200, and the lens component 100 can be movably connected to the base 200.

[0026] The rotating component 300 in the camera module 000 can be located between the lens component 100 and the base 200. Here, the rotating component 300 can abut against the side of the lens component 100 near the base 200.

[0027] The driving component 400 in the camera module 000 can be fixed on the base 200, and the driving component 400 can be connected to the rotating component 300. Here, the driving component 400 can also be located between the lens component 100 and the base 200; of course, the driving component 400 can also be located outside the lens component 100 and the base 200. This application embodiment does not limit this.

[0028] The driving component 400 can be configured to drive the rotating component 300 to rotate, thereby moving the lens component 100 in the direction of the optical axis L of the lens component 100.

[0029] In this embodiment, when the camera module 000 needs to zoom, the driving component 400 in the camera module 000 can drive the rotating component 300 to rotate. Since the rotating component 300 can abut against the side of the lens component 100 near the base 200, the rotating component 300 can drive the lens component 100 to move in the direction of the optical axis L of the lens component 100. In this way, the driving component 400 can drive the lens component 100 to move through the rotating component 300, so that the camera module 000 can realize the zoom function.

[0030] In summary, the camera module provided in this application includes a lens component, a base, a rotating component, and a driving component. When the camera module needs to zoom, the driving component in the camera module can drive the rotating component to rotate. Since the rotating component can abut against the side of the lens component near the base, the rotating component can drive the lens component to move in the direction of the optical axis of the lens component. In this way, the driving component can drive the lens component to move through the rotating component, so that the camera module can achieve the zoom function.

[0031] In related technologies, the movement of the lens in a camera module requires a voice coil motor. However, voice coil motors typically use the interaction between an energized coil and a magnet as the driving force to move the lens. After such a camera module is integrated into a terminal device, other components in the terminal device may also emit magnetic field signals, which may interfere with the voice coil motor. This could cause the voice coil motor to fail to drive the lens movement properly, resulting in lower reliability of the camera module.

[0032] In this embodiment, the camera module moves the lens component by driving the rotation of the rotating component through a driving component, eliminating the need for a voice coil motor. Therefore, when the camera module of this embodiment is integrated into the terminal device, the magnetic fields generated by other components in the terminal device will not interfere with the movement of the lens component, ensuring that the lens component can always move normally under the drive of the driving component, thereby effectively improving the reliability of the camera module.

[0033] It should be noted that, if the interference of magnetic field signals emitted by other components in the terminal device on the voice coil motor is not considered, a voice coil motor can also be added to the camera module in this embodiment. In this way, the camera module can not only drive the lens component to move by rotating the rotating component through the driving component, but also allow the voice coil motor to drive the lens component to move. This effectively increases the moving distance of the lens component, thereby improving the zoom capability of the camera module.

[0034] In this embodiment of the application, in order to ensure that the driving component 400 can smoothly drive the lens component 100 to move via the rotating component 300, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of a base in a camera module according to an embodiment of this application. The number of driving components 400 and rotating components 300 in the camera module 000 can be set to multiple. Each driving component 400 can correspond one-to-one with a corresponding rotating component 300, and each driving component 400 can be connected to its corresponding rotating component 300. The multiple driving components 400 can be evenly distributed between the lens component 100 and the base 200.

[0035] For example, the lens component 100 may include a support portion 101 and a lens 102. The support portion 101 has a mounting through-hole 101a, within which the lens 102 can be fixed. The base 200 may have a light-transmitting hole 200a communicating with the mounting through-hole 101a. Thus, the camera module 000 can acquire ambient light through the lens 102, allowing the ambient light to pass sequentially through the lens 102 and the light-transmitting hole 200a before entering the image sensor of the camera module 000, enabling the image sensor to form an image based on the acquired ambient light. In this case, multiple driving components 400 may be distributed around the light-transmitting hole 200a of the base 200, and multiple rotating components 300 may also be distributed around the mounting through-hole 101a of the support portion 101, with each rotating component 300 abutting against the side of the support portion 101 closest to the base 200.

[0036] For example, the support portion 101 can be square in shape. The number of driving components 400 and rotating components 300 in the camera module 000 are both four. The four rotating components 300 and the four driving components 400 can be distributed at the four corners of the support portion 101.

[0037] In the embodiments of this application, such as Figure 3 As shown, the rotating component 300 in the camera module 000 has a protruding structure 301 on the side near the lens component 100. For example, this rotating component 300 with the protruding structure 301 can be a cam. The driving component 400 can be configured to drive the rotating component 300 to rotate, causing the protruding structure 301 in the rotating component 300 to rotate. Thus, when the driving component 400 drives the rotating component 300 to rotate, it can cause the protruding structure 301 in the rotating component 300 to rotate in a direction toward the lens component 100, or it can cause the protruding structure 301 in the rotating component 300 to rotate in a direction away from the lens component 100.

[0038] In this situation, when the protrusion 301 in the rotating member 300 rotates toward the lens member 100 under the drive of the driving member 400, the protrusion 301 in the rotating member 300 can drive the lens member 100 to move away from the base 200. When the end of the protrusion 301 in the rotating member 300 separates from the lens member 100 under the drive of the driving member 400, the rotating member 300 moves toward the base 200.

[0039] For example, when the driving component 400 drives the rotating component 300 to rotate counterclockwise, the protruding structure 301 in the rotating component 300 can rotate toward the lens component 100, thereby enabling the protruding structure 301 to drive the lens component 100 to move away from the base 200. When the driving component 400 drives the rotating component 300 to rotate clockwise, the protruding structure 301 in the rotating component 300 can rotate away from the lens component 100. After the end of the protruding structure 301 in the rotating component 300 separates from the lens component 100, the rotating component 300 can move toward the base 200.

[0040] Optional, such as Figure 3 and Figure 4 As shown, Figure 4 yes Figure 3The diagram shows the camera module on the other side. The support portion 101 of the lens component 100 has multiple abutment grooves 101d on the side near the base 200. These grooves 101d correspond one-to-one with multiple rotating components 300. At least a portion of the protrusion 301 in each rotating component 300 can be located within the corresponding abutment groove 101d and abut against the support portion 101. Therefore, the multiple abutment grooves 101d can be evenly arranged around the mounting through-hole 101a of the support portion 101. By providing the abutment grooves 101d on the side of the support portion 101 near the base 200, the stability of the protrusion 301 in the rotating component 300 when abutting against the support portion 101 can be improved.

[0041] In the embodiments of this application, such as Figure 5 As shown, Figure 5 This is a schematic diagram of another camera module structure according to an embodiment of this application. The camera module 000 may further include a housing 500 fixed on the base 200. The supporting part 101, rotating part 300, and driving part 400 of the lens component 100 are all located within the housing 500. A portion of the lens 102 in the lens component 100 is located within the housing 500, and a portion is located outside the housing 500. For example, the housing 500 may have a first opening 500a and a second opening 500b disposed opposite to each other. A portion of the lens 102 can extend outside the housing 500 through the first opening 500a, while the second opening 500 in the housing 500 can be fastened to the base 200, so that the driving part 400 and the rotating part 300 disposed on the base 200 can both be located within the housing 500. In this application, the housing 500 can protect some components of the camera module 000 from damage.

[0042] Optional, such as Figure 6 , Figure 7 and Figure 8 As shown, Figure 6 This is a schematic diagram of the structure of a support portion provided in an embodiment of this application. Figure 7 This is a schematic diagram of the structure of a shell provided in an embodiment of this application. Figure 8 yes Figure 6 The shown support part and Figure 7The diagram shows a cross-sectional view of the assembled housing. The side of the support portion 101 facing away from the base 200 has a first guide structure 101b, and the inner wall of the housing 500 has a second guide structure 501 that mates with the first guide structure 101b. The length directions of both the first guide structure 101b and the second guide structure 501 are parallel to the optical axis L of the lens component 100. Thus, the interaction between the first guide structure 101b and the second guide structure 501 restricts the direction in which the drive component 400 moves the lens component 100 via the rotating component 300, ensuring that the lens component 100 can only move in the direction of its optical axis L.

[0043] For example, the number of first guide structures 101b provided on the side of the support portion 101 near the base 200 can be multiple, and the multiple first guide structures 101b can be evenly distributed around the mounting through hole 101a. The number of second guide structures 501 provided on the inner wall of the housing 500 can also be multiple, and the multiple second guide structures 501 can be evenly distributed around the first opening 500a. The multiple first guide structures 101b and the multiple second guide structures 501 can be matched one-to-one. In this way, the stability of the lens component 100 during movement can be improved through the mutual cooperation of the multiple first guide structures 101b and the multiple second guide structures 501.

[0044] Optionally, one of the first guide structure 101b and the second guide structure 501 can be a guide hole, and the other can be a guide rod. At least a portion of the guide hole can be located within the guide rod. It should be noted that this embodiment is illustrated using the first guide structure 101b as a guide hole and the second guide structure 501 as a guide rod as an example. It should also be noted that the guide hole and guide rod in this application are clearance-fitted to ensure that the guide rod can extend and retract within the guide hole.

[0045] In this application, as Figure 8 As shown, the side of the support portion 101 facing away from the base 200 also has a first magnet 101c, and the inner wall of the housing 500 also has a second magnet 502 that cooperates with the first magnet 101c. The orthographic projection of the first magnet 101c onto the base 200 can at least partially coincide with the orthographic projection of the second magnet 502 onto the base 200. For example, the outer boundary of the orthographic projection of the first magnet 101c onto the base 200 can completely coincide with the outer boundary of the orthographic projection of the second magnet 502 onto the base 200.

[0046] Here, the first magnet 101c and the second magnet 502 can be two repulsive magnets. That is, the magnetism of the side of the first magnet 101c closest to the second magnet 502 is the same as the magnetism of the side of the second magnet 502 closest to the first magnet 101c.

[0047] In this configuration, when the protruding structure 301 in the rotating component 300 rotates toward the lens component 100, causing the protruding structure 301 to drive the lens component 100 to move away from the base 200, the distance between the first magnet 101c and the second magnet 502 decreases, resulting in a larger repulsive force between them. Thus, when the protruding structure 301 in the rotating component 300 separates from the lens component 100, the repulsive force between the first magnet 101c and the second magnet 502 allows the lens component 100 to move away from the base 200.

[0048] In this application, the first magnet 101c can be disposed at the same position as the first guide structure 101b, and the first magnet 502 can be disposed at the same position as the second guide structure 501. Therefore, the number of first magnets 101c can be the same as the number of first guide structures 101b, and the number of second magnets 502 can be the same as the number of second guide structures 501.

[0049] For example, since one of the first guide structure 101b and the second guide structure 501 can be a guide hole and the other a guide rod, one of the first magnet 101c and the second magnet 502 can be located inside the guide hole, and the other can be fixedly connected to the end of the guide rod near the guide hole. For instance, when the first guide structure 101b is a guide hole and the second guide structure 501 is a guide rod, the first magnet 101c can be fixed inside the guide hole, while the second magnet 502 can be fixedly connected to the end of the guide rod near the guide hole.

[0050] In the embodiments of this application, such as Figure 9 As shown, Figure 9 This is a schematic diagram of the structure of a driving component provided in an embodiment of this application. The driving component 400 may include: a bracket 401, a rotating shaft 402, a pulling element 403, and a driving element.

[0051] The bracket 401 in the drive component 400 can be fixed on the base 200. The rotating shaft 403 in the drive component 400 can be movably connected to the bracket 401 and fixedly connected to the rotating component 300.

[0052] For example, the bracket 401 may include: a base plate 4011, and two support plates 4012 fixedly connected to the base plate 4011. The base plate 4011 may be fixedly connected to the side of the base 200 near the lens component 100, the two support plates 4012 in the bracket 401 may be arranged in parallel, and each support plate 4012 may be provided with a connecting through hole 4012a.

[0053] The rotating shaft 402 can pass through the two connecting through holes 4012a in sequence and then be movably connected to the two support plates 4012. For example, the rotating shaft 402 can be connected to each connecting through hole 4012a by rolling bearings. In this way, the support plates 4012 can support the rotating shaft 402 by rolling bearings, ensuring that the rotating shaft 402 can rotate better on the support plates 4012.

[0054] The rotating component 300 may have a snap-fit ​​hole 302, through which it can be fitted onto the rotating shaft 402. After the rotating component 300 is fitted onto the rotating shaft 402, a portion of the rotating component 300 is located between the two support plates 4012. Thus, when the rotating shaft 402 rotates on the bracket 401, the rotating shaft 401 can drive the rotating component 300 located between the two support plates 4012 to rotate. Through the cooperation between the two support plates 4012 and the rotating shaft 401, while ensuring that the rotating shaft 401 can drive the rotating component 300 to rotate normally, the support effect on the rotating component 300 is improved, allowing the rotating component 300 to stably drive the lens component 100 to move along the optical axis L. To ensure that the rotating shaft 401 can smoothly drive the rotating component 300 to rotate, the snap-fit ​​hole 302 in the rotating component 300 needs to be of a non-circular irregular shape, and the shapes of the rotating shaft 402 and the snap-fit ​​hole 302 need to match. Thus, after the rotating component 300 is sleeved on the rotating shaft 402 through the snap-fit ​​hole 302, the rotating component 300 can be snapped onto the rotating shaft 402, so that the rotating component 300 can be driven to rotate when the rotating shaft 402 rotates.

[0055] In this application, one end of the pulling element 403 in the drive component 400 can be fixedly connected to the side wall of the rotating shaft 402. For example, the position where the pulling element 403 is fixedly connected to the side wall of the rotating shaft 402 can be located at the end of the rotating shaft 402. The other end of the pulling element 403 in the drive component 400 can be fixedly connected to the bracket 401. The drive element in the drive component 400 can also be fixed to the bracket 401. The drive element in the drive component 400 can be configured to control the pulling element 403 to apply a pulling force to the side wall of the rotating shaft 402, thereby causing the rotating shaft 402 to rotate towards the pulling element 402.

[0056] In this embodiment, the position where the pulling element 403 in the drive component 400 connects to the side wall of the rotating shaft 402 is located on the side of the rotating shaft 402 opposite to the base 200. Thus, when the pulling element 403 applies a pulling force to the side wall of the rotating shaft 402 under the control of the drive component, the rotating shaft 402 can rotate towards the pulling element 403 under the action of this pulling force.

[0057] Optionally, to ensure that the rotating shaft 402 in the drive component 400 can rotate both clockwise and counterclockwise, it is necessary to ensure that there are two pulling elements 403 in the drive component 400, and these two pulling elements 403 can be located on both sides of the rotating shaft 403. The drive element in the drive component 400 can be configured to: shorten the length of one of the two pulling elements 403, causing the rotating shaft to rotate towards the shortened pulling element 403, and lengthen the other pulling element 403.

[0058] It should be noted that when the length of a certain pulling element 403 in the drive component 400 is shortened, the pulling element 403 will apply a pulling force to the side wall of the shaft 402 connected to it, so that the shaft 402 can rotate in a direction closer to the pulling element 403.

[0059] It should also be noted that the accompanying drawings in this application are only schematic representations of the structure of the pulling element 403. The actual pulling element 403 may have a different structure than that shown in the accompanying drawings. For example, the pulling element 403 may be a spring-like structure to ensure that the length of the pulling element 403 can be stretched or shortened.

[0060] In this case, such as Figure 10 As shown, Figure 10 This is an illustration of the effect of a driving component driving a rotating shaft component to rotate, as provided in an embodiment of this application. Assume that the two pulling elements 403 in the driving component 400 are pulling element 403a and pulling element 403b, with pulling element 403a located on the left side of the rotating shaft 402 and pulling element 403b located on the right side of the rotating shaft 402.

[0061] Therefore, when the driving element in the driving component 400 controls the length of the pulling element 403a to shorten, the shortened pulling element 403a can drive the rotating shaft 402 to rotate towards the pulling element 403a. That is, the rotating shaft 402 can rotate counterclockwise X1, which in turn can drive the rotating component 300 to rotate counterclockwise X1, so that the protruding structure 301 in the rotating component 300 can rotate towards the lens component 100, and thus the protruding structure 301 can drive the lens component 100 to move away from the base 200. During the process of the rotating shaft 402 rotating towards the pulling element 403a, the rotating shaft 402 can apply a pulling force to the pulling element 403b, so that the length of the pulling element 403b is lengthened.

[0062] When the drive element in the drive component 400 controls the length of the pulling element 403b to shorten, the shortened pulling element 403b can drive the rotating shaft 402 to rotate towards the pulling element 403b. That is, the rotating shaft 402 can rotate clockwise X2, which in turn can drive the rotating component 300 to rotate clockwise X2, so that the protruding structure 301 in the rotating component 300 can rotate away from the lens component 100. After the end of the protruding structure 301 in the rotating component 300 separates from the lens component 100, the rotating component 300 can move towards the base 200. During the process of the rotating shaft 402 rotating towards the pulling element 403b, the rotating shaft 402 can apply a pulling force to the pulling element 403a, so that the length of the pulling element 403a is lengthened.

[0063] Therefore, after the rotating shaft 402 rotates towards the pulling element 403a, the rotating shaft 402 can lengthen the pulling element 403b, so that the driving element in the subsequent driving component 400 can control the lengthened pulling element 403b to shorten its length. This ensures that the rotating shaft 402, after rotating counterclockwise X1, can rotate in the opposite direction clockwise X2.

[0064] Similarly, after the rotating shaft 402 rotates towards the pulling element 403b, the rotating shaft 402 can lengthen the pulling element 403a, so that the driving element in the subsequent driving component 400 can control the lengthened pulling element 403a to shorten its length. This ensures that the rotating shaft 402, after rotating in the clockwise direction X2, can rotate in the opposite direction counterclockwise direction X1.

[0065] In this embodiment, the pulling element 403 in the driving component 400 can be made of shape memory metal. Shape memory metal refers to a special metallic material that undergoes plastic deformation within a certain temperature range and then recovers its original macroscopic shape within another temperature range. In this case, the initial length of the pulling element 403 can be designed to be relatively short. After the length of the pulling element 403 is stretched, heating it can shorten its length back to the initial length.

[0066] Therefore, such as Figure 10 As shown, the driving element in the driving component 400 may include two heating units 404 corresponding one-to-one with the two pulling elements 403. Each heating unit 404 is used to heat the corresponding pulling element 403 to shorten the length of the corresponding pulling element 403.

[0067] In this case, it is assumed that the two heating units 404 in the drive component 400 are heating unit 404a and heating unit 404b, and heating unit 404a corresponds to the pulling element 403a, and heating unit 404b corresponds to the pulling element 403b.

[0068] Therefore, when heating unit 404a heats the stretched pulling element 403a, the length of the pulling element 403a can be shortened to its initial length, thus ensuring that the shortened pulling element 403a drives the rotating shaft 402 to rotate closer to the pulling element 403a. When heating unit 404b heats the stretched pulling element 403b, the length of the pulling element 403b can be shortened to its initial length, thus ensuring that the shortened pulling element 403b drives the rotating shaft 402 to rotate closer to the pulling element 403b.

[0069] In this embodiment, the bracket 401 in the driving component 400 may have two heating cavities 401a corresponding one-to-one with the two heating units 404, and a heat insulation plate 401b located between the two heating cavities 401a. Each heating unit 404 may be located within its corresponding heating cavity 401a. The orthographic projection of each pulling element 403a onto the bracket 401 may be located within the area of ​​its corresponding heating cavity 401a.

[0070] In this configuration, when a heating unit 404 is in a heating state, it can heat the heating cavity 401a containing it, allowing the cavity to heat the corresponding pulling element 403 via thermal radiation. Since a heat insulation plate 401b exists between the two heating cavities 401a, when one cavity is heating, it can only heat the pulling element 403 corresponding to the heating unit 404 within that cavity, without heating the other. Thus, the heat insulation plate 401b between the two heating cavities ensures that each heating unit 404 can accurately heat its corresponding pulling element 403, thereby guaranteeing that the drive component 400 can accurately control the rotating component 300 to rotate instantaneously or counterclockwise.

[0071] For example, such as Figure 9 and Figure 10As shown, the bracket 401 in the drive component 400 may further include a receiving portion 4013 located on the base plate 4011 and fixedly connected to a support plate 4012. Two heating chambers 401a may be distributed within this receiving portion 4013. It should be noted that the receiving portion 4013 and the two pulling elements 403 may both be located on one side of the same support plate 4012 to ensure that the heating chambers 401a of the receiving portion 4013 can accurately heat the pulling elements 403.

[0072] Optionally, the heating unit 404 in the driving component 400 may include at least one of a heating coil, a heating resistor, and a PTC heater. Thus, when the heating unit 404 is energized, it is in a heating state; when the heating unit 404 is de-energized, it is in a stopped heating state. Therefore, the camera module can control the heating unit 404 to be in a heating state by energizing it.

[0073] It should be noted that when the pulling element 403 in the driving component 400 is made of shape memory metal, the properties of shape memory metal can be utilized in conjunction with the heating unit 404 to drive the rotation of the rotating component 300. Furthermore, when the heating unit 404 is a heating coil, heating resistor, or PTC heater, its size is relatively small. This effectively reduces the size of the camera module 000.

[0074] Of course, in other possible implementations, if the size of the camera module 000 is not considered, the pulling element 403 may not be made of shape memory metal, but of ordinary metal. In this case, the structure of the pulling element 403 can be a rope or a spring, and the driving element can include a drive motor. Under the control of the drive motor, the length of the pulling element 403 can also be lengthened or shortened.

[0075] Optional, such as Figure 11 As shown, Figure 11 This is a schematic diagram of another camera module structure provided in this application embodiment. The camera module 000 may further include an elastic member 600. This elastic member 600 can be fixedly connected to the lens member 100 and the base 200 respectively. That is, the lens member 100 can be movably connected to the base 200 through the elastic member 600. In this way, when the camera module 000 is subjected to a lateral external force (e.g., an external force perpendicular to the optical axis L of the lens member 100), the elastic member 600 can prevent the lens member 100 from moving in the direction perpendicular to the optical axis L.

[0076] For example, the elastic component 600 in the camera module 000 may include a plurality of tension springs 601, each tension spring 601 having its two ends fixedly connected to the lens component 100 and the base 200, respectively.

[0077] To improve the stability of the lens component 100 and the base 200 connected by multiple tension springs 601, multiple protrusions 201 corresponding one-to-one with the tension springs 601 can be provided on the side of the base 200 near the lens component 100. The height of each protrusion 201 can be the same, and the height of each protrusion 201 can be greater than the maximum distance between the lens component 100 and the base 200. One end of each tension spring 501 can be fixedly connected to the side of the protrusion 201 facing away from the base 200, and the other end can be fixedly connected to the side of the lens component 100 near the base 200. In this way, the multiple tension springs 601 can restrict the movement of the lens component 100 in the direction perpendicular to the optical axis L. It should be noted that the height of the protrusion 201 in this embodiment refers to its height in the direction parallel to the optical axis L.

[0078] In this application, multiple protrusions 201 can be evenly distributed around the light-transmitting hole 200a of the base 200. In this way, after the multiple protrusions 201 are connected to the multiple tension springs 601, it can be ensured that the tension applied by each tension spring 601 to the lens component 100 is equal, thereby ensuring a high degree of stability in the connection between the lens component 100 and the base 200 through the multiple tension springs 601.

[0079] In summary, the camera module provided in this application includes a lens component, a base, a rotating component, and a driving component. When the camera module needs to zoom, the driving component in the camera module can drive the rotating component to rotate. Since the rotating component can abut against the side of the lens component near the base, the rotating component can drive the lens component to move in the direction of the optical axis of the lens component. In this way, the driving component can drive the lens component to move through the rotating component, enabling the camera module to achieve zoom functionality. The lens component can be moved without using a voice coil motor. Therefore, after integrating the camera module of this application embodiment into a terminal device, the magnetic field generated by other components in the terminal device will not interfere with the movement of the lens component, ensuring that the lens component can always move normally under the drive of the driving component, thereby effectively improving the reliability of the camera module.

[0080] This application provides a terminal device, which may include, but is not limited to, devices with cameras such as webcams, smartphones, smartwatches, and tablets. The terminal device may include any of the aforementioned camera modules 000.

[0081] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0082] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A camera module, characterized in that, include: Lens component (100), base (200), rotating component (300) and drive component (400); The lens component (100) is located on the base (200) and is movably connected to the base (200); The rotating component (300) is located between the lens component (100) and the base (200), and the rotating component (300) abuts against the side of the lens component (100) near the base (200); The drive component (400) is fixed on the base (200) and connected to the rotating component (300); The driving component (400) is configured to drive the rotating component (300) to rotate, thereby driving the lens component (100) to move in the direction of the optical axis (L) of the lens component (100); The drive component (400) includes: a bracket (401), a rotating shaft (402), a pulling element (403), and a drive element; The bracket (401) is fixed on the base (200); the rotating shaft (402) is movably connected to the bracket (401) and fixedly connected to the rotating component (300); one end of the pulling element (403) is fixedly connected to the side wall of the rotating shaft (402), and the other end is fixedly connected to the bracket (401); the driving element is fixed on the bracket (401). The driving element includes a heating unit (404) for heating the pulling element (403). The heating unit (404) is configured to control the pulling element (403) to apply a pulling force to the side wall of the rotating shaft (402) so as to drive the rotating shaft (402) to rotate in a direction closer to the pulling element (403).

2. The camera module according to claim 1, characterized in that, There are two pulling elements (403), and the two pulling elements (403) are located on both sides of the rotating shaft (402); The drive element is configured to: control the length of one of the two pull elements (403) to shorten, causing the shaft (402) to rotate toward the shortened pull element (403), and causing the length of the other pull element (403) to be lengthened.

3. The camera module according to claim 2, characterized in that, The pulling element (403) is made of shape memory metal, and the driving element includes two heating units (404) corresponding one-to-one with the two pulling elements (403), each heating unit (404) being used to heat the corresponding pulling element (403) to shorten the length of the corresponding pulling element (403).

4. The camera module according to claim 3, characterized in that, The bracket (401) has two heating chambers (401a) corresponding one-to-one with the two heating units (404), and a heat insulation plate (401b) located between the two heating chambers (401a), with each heating unit (404) located in the corresponding heating chamber (401a); The orthographic projection of each of the pulling elements (403) on the bracket (401) is located in the area of ​​the corresponding heating cavity (401a).

5. The camera module according to claim 3, characterized in that, The heating unit (404) includes at least one of a heating coil, a heating resistor, and a PTC heater.

6. The camera module according to any one of claims 1 to 5, characterized in that, One end of the pulling element (403) is connected to the side wall of the rotating shaft (402) at a position on the side of the rotating shaft (402) away from the base (200).

7. The camera module according to any one of claims 1 to 5, characterized in that, The number of driving components (400) and the number of rotating components (300) are both multiple. Each driving component (400) corresponds to a rotating component (300) in a one-to-one manner. The driving components (400) are evenly distributed between the lens component (100) and the base (200), and each driving component (400) is connected to the corresponding rotating component (300).

8. The camera module according to any one of claims 1 to 5, characterized in that, The rotating component (300) has a protruding structure (301) on the side near the lens component (100). The driving component (400) is configured to drive the rotating component (300) to rotate, thereby causing the protruding structure (301) to rotate; When the end of the protruding structure (301) rotates toward the lens component (100), the protruding structure (301) drives the lens component (100) to move away from the base (200); when the end of the protruding structure (301) separates from the lens component (100), the lens component (100) moves toward the base (200).

9. The camera module according to claim 8, characterized in that, The lens component (100) includes: a support portion (101) and a lens (102), the support portion (101) having a mounting through hole (101a), and the lens (102) being fixed within the mounting through hole (101a); The camera module further includes: a housing (500) fixed on the base (200), wherein the bearing part (101), the rotating part (300) and the driving part (400) are all located inside the housing (500), and part of the lens (102) is located inside the housing (500) and part is located outside the housing (500); The support part (101) has a first magnet (101c) on the side opposite to the base (200), and the inner wall of the housing (500) has a second magnet (502) that cooperates with the first magnet (101c). The orthographic projection of the first magnet (101c) on the base (200) and the orthographic projection of the second magnet (502) on the base (200) at least partially overlap. When the end of the protruding structure (301) separates from the lens component (100), the first magnet (101c) and the second magnet (502) repel each other.

10. The camera module according to claim 9, characterized in that, The support part (101) has a first guide structure (101b) on the side opposite to the base (200), and the inner wall of the housing (500) has a second guide structure (501) that cooperates with the first guide structure (101b). The length direction of the first guide structure (101b) and the length direction of the second guide structure (501) are both parallel to the optical axis (L) of the lens component (100).

11. The camera module according to claim 10, characterized in that, One of the first guide structure (101b) and the second guide structure (501) is a guide hole and the other is a guide rod, wherein at least a portion of the guide rod is located within the guide hole.

12. The camera module according to claim 11, characterized in that, One of the first magnet (101c) and the second magnet (502) is located inside the guide hole, and the other is fixedly connected to the end of the guide rod near the guide hole.

13. The camera module according to any one of claims 1 to 5, characterized in that, The camera module further includes an elastic component (600), which is fixedly connected to the lens component (100) and the base (200) respectively.

14. The camera module according to claim 13, characterized in that, The base (200) has a plurality of protrusions (201) on the side near the lens component (100), and the height of the protrusions (201) is greater than the maximum distance between the lens component (100) and the base (200); The elastic component (600) includes a plurality of tension springs (601) corresponding one-to-one with the plurality of bosses (201), one end of each tension spring (601) being fixedly connected to the side of the corresponding boss (201) away from the base (200), and the other end being fixedly connected to the side of the lens component (100) close to the base (200).

15. A terminal device, characterized in that, include: The camera module according to any one of claims 1 to 14.

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