Periscopic lens driving device, camera device and mobile terminal

Abstract

The utility model provides a periscopic lens driving device, a camera device and a mobile terminal. The periscopic lens driving device comprises a shell assembly, the shell assembly is provided with a containing space, and the periscopic lens driving device further comprises a prism support, a lens assembly, a driving mechanism and a driving mechanism which are arranged in the containing space, and a ball bearing is arranged in the prism support; one end of the ball assembly extends into the prism support and is in rolling contact with the ball bearing, and the prism support can move relative to the ball assembly; the lens carrier is arranged on the side, away from the ball assembly, of the prism support. At least one part of the first driving assembly is arranged on the prism support, and the other part of the first driving assembly is arranged on the shell assembly; and at least one part of the second driving assembly is arranged on the lens carrier, and at least the other part of the second driving assembly is arranged on the shell assembly. The periscopic lens driving device solves the problem that a periscopic lens driving device in the prior art is poor in use performance.

Description

[0001] This application claims the priority of the patent application titled "Periscope Lens Driving Device, Imaging Device and Mobile Terminal" with the application number 202420276096.3, which was filed with the China National Intellectual Property Administration on February 4, 2024. Technical Field

[0002] The utility model relates to the field of imaging devices, and more particularly, to a periscope lens driving device, an imaging device and a mobile terminal. Background Art

[0003] With the development of technology, many current electronic devices (such as tablet computers or smart phones) are equipped with lens modules and have camera or video functions. Lenses can be roughly classified into wide-angle lenses with short focal lengths and telephoto lenses with long focal lengths. However, placing a long focal length lens in the optical module will increase the thickness of the electronic device, making it difficult to meet the requirements of thin and light for mobile terminal devices. In the prior art, a periscope design is usually adopted, that is, the optical path is laid flat and a turning mirror is added to rotate the optical path by 90 degrees, so that the entire optical system lies flat to reduce the overall height.

[0004] The existing periscope lens driving device includes two parts: a reflection module (prism motor) and a lens module (periscope motor). The reflection module reflects the imaging light by 90° and then enters the lens module, and the lens module performs focusing and imaging. Currently, the anti-shake scheme of the periscope module is responsible for anti-shake in two directions by the reflection module and the lens module separately or jointly. Therefore, lens focusing and anti-shake require the cooperation of the reflection module and the lens module to drive, resulting in problems such as difficult assembly and debugging of two sets of motors, large number of parts in the driving device, complex design, large structural size, and low reliability.

[0005] Therefore, there is a problem of poor performance in the use of periscope lens driving devices in the prior art. Summary of the Utility Model

[0006] The main purpose of the utility model is to provide a periscope lens driving device, an imaging device and a mobile terminal to solve the problem of poor performance in the use of periscope lens driving devices in the prior art.

[0007] To achieve the above object, according to one aspect of the present utility model, a periscope lens driving device is provided, which includes a housing assembly having an accommodation space. The periscope lens driving device further includes the following components disposed in the accommodation space: a prism bracket with a ball bearing disposed inside; a ball assembly, one end of which extends into the prism bracket and makes rolling contact with the ball bearing, and the prism bracket is capable of moving relative to the ball assembly; a lens carrier disposed on the side of the prism bracket away from the ball assembly; a first driving assembly, at least a part of which is disposed on the prism bracket and at least another part is disposed on the housing assembly to enable the prism bracket to swing relative to the housing assembly in the X-axis and / or Y-axis directions; and a second driving assembly, at least a part of which is disposed on the lens carrier and at least another part is disposed on the housing assembly to enable the lens carrier to move along the Z-axis direction, where the Z-axis direction is the moving direction of the lens carrier away from or towards the prism bracket.

[0008] Further, the ball assembly includes: a ball support disposed on the side of the prism bracket away from the lens carrier; a first ball disposed on the ball support and making rolling contact with the ball bearing.

[0009] Further, the thickness of the ball bearing is greater than the radius of the first ball; and / or the first ball is made of ceramic material; and / or the ball bearing is made of copper.

[0010] Further, the side of the prism bracket facing the ball support has an abutting groove, the end of the ball support provided with the first ball extends into the abutting groove, the ball bearing is disposed inside the abutting groove, and a reinforcing plate is disposed at the bottom of the abutting groove, with the ball bearing abutting against the reinforcing plate.

[0011] Further, an installation groove is provided at the bottom of the abutting groove, the reinforcing plate is disposed at the bottom of the installation groove, at least a part of the ball bearing is disposed inside the installation groove, and at least one dispensing hole is provided at the periphery of the installation groove.

[0012] Further, the first driving assembly includes: a first driving magnet; a first driving coil, with the first driving magnet disposed on the prism bracket and the first driving coil disposed on the housing assembly corresponding to the first driving magnet; a second driving magnet; a second driving coil, with the second driving magnet disposed on the prism bracket and the second driving coil disposed on the housing assembly corresponding to the second driving magnet; the first driving magnet and the second driving magnet are respectively disposed on different outer surfaces of the prism bracket, and at least one of the side of the first driving magnet facing the first driving coil and the side of the second driving magnet facing the second driving coil has a wavy surface or a serrated surface.

[0013] Furthermore, the periscope lens driving device further includes a Hall component and a Hall magnet. The Hall magnet is disposed on the lens carrier, and the Hall component is disposed on the housing component corresponding to the Hall magnet, and the Hall magnet has at least one non-magnetic region.

[0014] Furthermore, the periscope lens driving device further includes at least two second balls and at least one roller. One side of the lens carrier corresponding to the housing component has at least two first chutes and at least one third chute. The first chute and the third chute are respectively disposed on both sides of the moving direction of the lens carrier. The housing component is provided with at least one second chute corresponding to the first chute. At least one second ball is disposed in each first chute. At least a part of the roller is located inside the third chute, and at least another part of the roller is in sliding contact with the housing component. The first chute, the second chute, and the third chute all extend along the moving direction of the lens carrier, and the axial direction of the roller is perpendicular to the moving direction of the lens carrier.

[0015] Furthermore, the periscope lens driving device further includes at least one sliding shaft and at least one roller. One side of the lens carrier corresponding to the housing component has at least one first chute and at least one third chute. The first chute and the third chute are respectively disposed on both sides of the moving direction of the lens carrier. The housing component is provided with at least one second chute corresponding to the first chute. At least one sliding shaft is disposed in each first chute. At least a part of the roller is located inside the third chute, and at least another part of the roller is in sliding contact with the housing component. The first chute, the second chute, and the third chute all extend along the moving direction of the lens carrier, and the axial direction of the roller is perpendicular to the moving direction of the lens carrier.

[0016] According to another aspect of the present invention, there is provided a camera device, which includes the above-mentioned periscope lens driving device.

[0017] According to another aspect of the present invention, there is provided a mobile terminal, which includes the above-mentioned camera device.

[0018] Applying the technical solution of the present utility model, the periscope lens driving device in this application includes a housing assembly, the housing assembly has an accommodation space, and the periscope lens driving device further includes a prism bracket, a ball component, a lens carrier, a first driving component, and a second driving component arranged in the accommodation space. A ball bearing is arranged inside the prism bracket; one end of the ball component extends into the prism bracket and is in rolling contact with the ball bearing, and the prism bracket can move relative to the ball component; the lens carrier is arranged on the side of the prism bracket away from the ball component; at least a part of the first driving component is arranged on the prism bracket, and at least another part of the first driving component is arranged on the housing assembly, so that the prism bracket can swing relative to the housing assembly in the X-axis and / or Y-axis directions; at least a part of the second driving component is arranged on the lens carrier, and at least another part of the second driving component is arranged on the housing assembly, so that the lens carrier can move along the Z-axis direction, and the Z-axis direction is the movement direction of the lens carrier away from or close to the prism bracket.

[0019] When using the periscope lens driving device in this application, since the first driving component is used to drive the prism bracket to swing relative to the housing assembly in the X-axis and Y-axis directions, lens anti-shake can be achieved through the independent movement of the prism bracket. Also, since the second driving component can make the lens carrier move along the Z-axis direction, when focusing is required, only the second driving component needs to be used to drive the lens carrier to move. At the same time, since a ball bearing is arranged on the prism bracket, the mutual cooperation between the ball bearing and the ball component can ensure that the prism bracket can perform anti-shake movement more smoothly. At the same time, by arranging the ball bearing, the force between the ball component and the prism bracket can be effectively reduced, thereby playing a certain protective role for the prism bracket. And when subjected to external impact, the ball bearing receives a more uniform impact force from the ball component, is not easily deformed, has good strength, and has better centrality consistency of the mover component in different postures, improving the driving performance. Therefore, the periscope lens driving device in this application effectively solves the problem of poor performance of the periscope lens driving device in the prior art. Description of the Drawings

[0020] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 Shows an exploded view of a periscope lens driving device according to a specific embodiment of the present utility model;

[0022] Figure 2 Shows Figure 1 The schematic diagram of the positional relationship among the lens carrier, the second ball, and the roller of the periscope lens driving device in

[0023] Figure 3 shows Figure 1 a schematic diagram of the positional relationship between the prism bracket and the ball bearing in the periscope lens driving device in

[0024] Figure 4 shows Figure 1 a schematic diagram of the positional relationship between the prism bracket, the first driving magnet, the first driving coil, the second driving magnet, and the second driving coil in the periscope lens driving device in

[0025] Figure 5 shows Figure 1 a schematic diagram of the positional relationship between the housing assembly and the second ball in the periscope lens driving device in

[0026] Figure 6 shows Figure 1 a schematic diagram of the positional relationship between the Hall assembly and the Hall magnet in the periscope lens driving device in

[0027] Figure 7 shows Figure 1 a schematic diagram of the positional relationship between the ball assembly and the prism bracket in the periscope lens driving device in

[0028] Figure 8 shows a relationship diagram of the magnetic field intensity sensed by the Hall chip and the position (travel) simulated by a conventional Hall magnet structure;

[0029] Figure 9 shows a relationship diagram of the magnetic field intensity sensed by the Hall chip and the position (travel) simulated by the Hall magnet structure of the present utility model;

[0030] Figure 10 shows a schematic diagram of the structure of the lens carrier in another specific embodiment of the present application;

[0031] Figure 11 shows a schematic diagram of the positional relationship between the housing assembly and the sliding shaft in another specific embodiment of the present application.

[0032] Among them, the above-mentioned drawings include the following reference numerals:

[0033] 10. Housing assembly; 11. First chute; 12. Third chute; 20. Prism bracket; 21. Abuttment groove; 211. Mounting groove; 212. Glue dispensing hole; 30. Ball assembly; 31. Ball support; 32. First ball; 40. Ball bearing; 50. Lens carrier; 51. Second chute; 60. First driving assembly; 61. First driving magnet; 62. First driving coil; 63. Second driving magnet; 64. Second driving coil; 70. Second driving assembly; 90. Hall assembly; 91. Hall magnet; 100. Second ball; 200. Roller; 300. Reinforcing plate; 400. Slide shaft. Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present invention in detail with reference to the drawings and in combination with the embodiments.

[0035] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0036] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" generally refer to the directions shown in the drawings, or refer to the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contours of the respective components, but the above orientation terms do not limit the present invention.

[0037] In order to solve the problem of poor performance of the periscope lens driving device in the prior art, the present application provides a periscope lens driving device, a camera device and a mobile terminal.

[0038] Moreover, the mobile terminal in the present application has a camera device, and the camera device in the present application has the following periscope lens driving device. In the present application, the mobile terminal generally refers to a mobile phone or a laptop computer with photographing and video recording functions.

[0039] Such as Figures 1 to 7As shown in the figure, the periscope lens driving device in the present application includes a housing assembly 10. The housing assembly 10 has an accommodation space. The periscope lens driving device further includes a prism bracket 20, a ball assembly 30, a lens carrier 50, a first driving assembly 60, and a second driving assembly 70 disposed in the accommodation space. A ball bearing 40 is provided inside the prism bracket 20; one end of the ball assembly 30 extends into the prism bracket 20 and is in rolling contact with the ball bearing 40, and the prism bracket 20 can move relative to the ball assembly 30; the lens carrier 50 is disposed on the side of the prism bracket 20 away from the ball assembly 30; at least a part of the first driving assembly 60 is disposed on the prism bracket 20, and at least another part of the first driving assembly 60 is disposed on the housing assembly 10 to swing the prism bracket 20 relative to the housing assembly 10 in the X-axis and / or Y-axis directions; at least a part of the second driving assembly 70 is disposed on the lens carrier 50, and at least another part of the second driving assembly 70 is disposed on the housing assembly 10 to enable the lens carrier 50 to move in the Z-axis direction, and the Z-axis direction is the moving direction of the lens carrier 50 away from or close to the prism bracket 20.

[0040] When using the periscope lens driving device in the present application, since the first driving assembly 60 is used to drive the prism bracket 20 to swing relative to the housing assembly 10 in the X-axis and Y-axis directions, lens anti-shake can be achieved through the independent movement of the prism bracket 20. Also, since the second driving assembly 70 can enable the lens carrier 50 to move in the Z-axis direction, when focusing is required, it only needs to drive the lens carrier 50 to move through the second driving assembly 70. At the same time, since the prism bracket 20 is provided with a ball bearing 40, and the ball assembly 30 is in circumferential rolling contact with the inner side of the ball bearing 40 through the first ball 32, it can greatly reduce the rolling friction resistance and the uncertainty of the friction resistance direction, reduce the interference of the rolling fit between the ball assembly 30 and the prism bracket 20 on the driving system, and further ensure that the prism bracket 20 can perform anti-shake movement more smoothly through the mutual cooperation between the ball bearing 40 and the ball assembly 30, improving the anti-shake driving accuracy and performance. At the same time, by providing the ball bearing 40, the acting force between the ball assembly 30 and the prism bracket 20 can be effectively reduced, thereby playing a certain protective role for the prism bracket 20. And when subjected to external impact, the ball bearing 40 receives a relatively uniform impact force from the ball assembly 30, is not easily deformed, has good strength, and has better centrality consistency of the mover assembly in different postures, improving the driving performance. Therefore, the periscope lens driving device in the present application effectively solves the problem of poor performance of the periscope lens driving device in the prior art.

[0041] In this technical solution, if the ball bearing 40 is not provided, the ball assembly 30 will directly contact the prism bracket 20, resulting in a large frictional resistance with unstable direction between the prism bracket 20 and the ball assembly 30, causing high-frequency jumps in the drive signal, forming a large interference to the drive system, and affecting the anti-shake drive performance. Additionally, when subjected to external impact, the ball assembly 30 impacts the prism bracket 20, and the prism bracket 20 is prone to deformation due to the concentrated impact force on the inner plane, resulting in a reduction in accuracy. Furthermore, the difference in the centering of the mover assembly in different postures of the structure becomes larger, affecting the drive performance.

[0042] In a specific embodiment of the present application, the ball assembly 30 includes a ball support 31 and a first ball 32. The ball support 31 is disposed on the side of the prism bracket 20 away from the lens carrier 50; the first ball 32 is disposed on the ball support 31 and is in rolling contact with the ball bearing 40. Preferably, the ball support 31 includes a support body and a mounting post. The support body is disposed on the inner side wall of the housing assembly 10; the mounting post is disposed on the support body and extends toward the prism bracket 20, and one end of the mounting post away from the support body has a first mounting hole, and the first ball 32 is disposed in the first mounting hole.

[0043] It should also be noted that in the present application, setting the mounting post on the support body and extending one end of the mounting post into the interior of the prism bracket 20 can also play a role in limiting the movement of the prism bracket 20, thereby preventing the prism bracket 20 from shifting during movement, and further ensuring the stability of the movement of the prism bracket 20.

[0044] Optionally, both sides of the support body have connecting arms, and the support body is disposed on the housing assembly 10 through the connecting arms. By setting it in this way, when the prism bracket 20 swings, the stability of the support body can be effectively ensured, thereby ensuring the stability of the movement of the prism bracket 20.

[0045] Optionally, the thickness of the ball bearing 40 is greater than the radius of the first ball 32.

[0046] Optionally, the first ball 32 is made of ceramic material.

[0047] Optionally, the ball bearing 40 is made of copper.

[0048] Optionally, the side of the prism bracket 20 facing the ball support 31 has an abutting groove 21. One end of the ball support 31 provided with the first ball 32 extends into the abutting groove 21, the ball bearing 40 is disposed inside the abutting groove 21, and a reinforcing plate 300 is disposed at the bottom of the abutting groove 21. The ball bearing 40 abuts against the reinforcing plate 300. In the present application, when the prism bracket 20 swings along the X-axis and the Y-axis, the first ball 32 can always contact the reinforcing plate 300.

[0049] Optionally, an installation groove 211 is provided at the bottom of the abutting groove 21. The reinforcing plate 300 is provided at the bottom of the installation groove 211. At least a part of the ball bearing 40 is arranged inside the installation groove 211, and at least one dispensing hole 212 is provided on the periphery of the installation groove 211. By such an arrangement, the stability of the connection between the ball bearing 40 and the prism bracket 20 can be effectively improved.

[0050] Preferably, the reinforcing plate 300 is a metal plate. By such an arrangement, not only can the prism bracket 20 be protected to a certain extent, but also the friction between the prism bracket 20 and the ball assembly 30 can be reduced.

[0051] Specifically, the first driving assembly 60 includes a first driving magnet 61, a first driving coil 62, a second driving magnet 63 and a second driving coil 64. The first driving magnet 61 is arranged on the prism bracket 20, and the first driving coil 62 is arranged on the housing assembly 10 corresponding to the first driving magnet 61; the second driving magnet 63 is arranged on the prism bracket 20, and the second driving coil 64 is arranged on the housing assembly 10 corresponding to the second driving magnet 63; the first driving magnet 61 and the second driving magnet 63 are respectively arranged on different outer surfaces of the prism bracket 20, and at least one of the side of the first driving magnet 61 facing the first driving coil 62 and the side of the second driving magnet 63 facing the second driving coil 64 has a wavy surface or a serrated surface. In a specific embodiment of the present application, when the first driving coil 62 and the first driving magnet 61 interact, the prism bracket 20 can swing along the X axis, and when the second driving coil 64 and the second driving magnet 63 interact, the prism bracket 20 can swing along the Y axis. Moreover, since the first driving coil 62 and the second driving coil 64 are stationary during the anti-shake movement of the prism, and the first driving magnet 61 and the second driving magnet 63 are moving, therefore, in the present application, by providing a wavy surface or a serrated surface on the first driving magnet 61 and the second driving magnet 63, it can ensure that the magnetic field strength can be increased to a certain extent when the prism bracket 20 performs the anti-shake movement.

[0052] Optionally, the prism bracket 20 is respectively provided with a first installation groove corresponding to the first driving magnet 61 and the second driving magnet 63.

[0053] Optionally, adsorption magnets are also correspondingly embedded on the bottom surface of the housing assembly 10, and the adsorption magnets are arranged corresponding to the first driving magnet 61 or the second driving magnet 63. It should be noted that in this application, one of the first driving magnet 61 and the second driving magnet 63 is arranged on the side wall of the prism holder 20, and the other is arranged on the bottom surface of the prism holder 20, and the adsorption magnet is arranged corresponding to the magnet on the bottom surface of the prism holder 20. In this way, on the one hand, the prism holder 20 is leaned against the ball assembly 30; on the other hand, it can play a role in resetting after the first driving assembly 60 is powered off, preventing noise caused by the prism holder 20 shaking and hitting, and playing a role in noise reduction. In a specific embodiment of the present application, the second driving magnet 63 is arranged at the bottom of the prism holder 20.

[0054] Optionally, the second driving assembly 70 includes a third driving magnet and a third driving coil. The third driving magnet is arranged on the lens carrier 50, and the third driving coil is arranged on the housing assembly 10 corresponding to the third driving magnet.

[0055] Optionally, the periscope lens driving device further includes a Hall assembly 90 and a Hall magnet 91, and the Hall assembly 90 includes a Hall chip. The Hall magnet 91 is arranged on the lens carrier 50, the Hall assembly 90 is arranged on the housing assembly 10 corresponding to the Hall magnet 91, and the Hall magnet 91 has at least one non-magnetic region. In this application, by setting the non-magnetic region, the magnetic field intensity at the two magnetic poles of the Hall magnet is improved, the change amount of the magnetic field intensity is increased, and further the sensor induction sensitivity is improved, which is beneficial to the closed-loop driving control accuracy of the periscope telephoto lens.

[0056] In a specific embodiment of the present application, the length of the non-magnetic region in the optical axis direction is set to be 0.4 to 0.6 times the mechanical stroke of the lens carrier 50 on the housing assembly 10. Due to the setting of the non-magnetic region, the size of the Hall magnet 91 can be reduced as much as possible. The ratio of the length of the Hall magnet 91 in the optical axis direction to the mechanical stroke interval of the lens carrier 50 on the housing assembly 10 can be specifically 1.4 to 1.6. In this embodiment, the above-mentioned Hall magnet 91 can be specifically a multi-stage magnetized magnet, and the non-magnetic region is arranged in the middle of the multi-stage magnetized magnet in the optical axis direction. Since the multi-stage magnetized magnet itself has a non-magnetic region, in order to improve the driving performance of the multi-stage magnetized magnet and the driving coil, the prior art usually requires that the interval span of the non-magnetic region in the polarization direction is as small as possible. Currently, the interval span of the non-magnetic region in the polarization direction is usually set to be less than or equal to 0.4 mm. In this embodiment, in order to make the magnetic field intensity at the end reach a better change amount, the interval span of the non-magnetic region in the optical axis direction can be set to be greater than or equal to 1 mm. Further, in order to obtain a better curvature of the detected magnetic field intensity change, the distance between the Hall chip and the above multi-stage magnetized magnet in the Y-axis direction can be set to be 0.3 mm to 0.5 mm. Figure 8 、Figure 9 The interval spans of the non-magnetic regions of the Hall magnet 91 in the polarization direction are set to 0.2 mm and 1.7 mm respectively, and the magnetic induction intensity change curves within the simulated driving stroke of ±1625 mm are shown. It can be seen from the figure that by arranging the non-magnetic regions, the non-linearity at both ends of the magnetic field can be well corrected, making the non-linearity error of the magnetic field intensity change curve within the entire driving stroke small. That is, when the Hall chip passes through the regions corresponding to both ends in the optical axis direction of the Hall magnet 91, the change in the magnetic field intensity in this part of the stroke still remains large.

[0057] Specifically, the periscope lens driving device further includes at least two second balls 100 and at least one roller 200. One side of the lens carrier 50 corresponding to the housing assembly 10 has at least two first chutes 11 and at least one third chute 12. The first chutes 11 and the third chute 12 are respectively arranged on both sides of the movement direction of the lens carrier 50. The housing assembly 10 is provided with at least one second chute 51 corresponding to the first chute 11. At least one second ball 100 is arranged in each first chute 11. At least a part of the roller 200 is located inside the third chute 12, and at least another part of the roller 200 is in sliding contact with the housing assembly 10. The first chute 11, the second chute 51, and the third chute 12 all extend along the movement direction of the lens carrier 50, and the axial direction of the roller 200 is perpendicular to the movement direction of the lens carrier 50. In a specific embodiment of the present application, all the balls are arranged in the Z-axis direction, and the axial direction of the roller 200 extends along the X-axis direction. And this setting can guide the movement of the lens carrier 50 through the balls, while the roller 200 can support the lens carrier 50. And compared with the balls, the contact area between the roller 200 and the lens carrier 50 is larger. Therefore, when subjected to external force impact, by setting the roller 200, it can better protect the lens carrier 50 and reduce the damage degree of the lens carrier 50. Optionally, at least one of the first chute 11 and the second chute 51 can be a V-shaped groove.

[0058] In another specific embodiment of the present application, as Figure 10 and Figure 11As shown in the figure, the periscope lens driving device further includes at least one sliding shaft 400 and at least one roller 200. One side of the lens carrier 50 corresponding to the housing assembly 10 has at least one first sliding groove 11 and at least one third sliding groove 12. The first sliding groove 11 and the third sliding groove 12 are respectively arranged on both sides of the moving direction of the lens carrier 50. The housing assembly 10 is provided with at least one second sliding groove 51 corresponding to the first sliding groove 11. At least one sliding shaft 400 is arranged in each first sliding groove 11. At least a part of the roller 200 is located inside the third sliding groove 12, and at least another part of the roller 200 is in sliding contact with the housing assembly 10. The first sliding groove 11, the second sliding groove 51, and the third sliding groove 12 all extend along the moving direction of the lens carrier 50, and the axial direction of the roller 200 is perpendicular to the moving direction of the lens carrier 50. In this embodiment, when the periscope lens driving device is subjected to an external force or impact, using the sliding shaft 400 instead of the second ball can effectively reduce the pits generated on the lens carrier 50 and the housing assembly 10 due to the impact.

[0059] Specifically, the housing assembly 10 includes a housing and a base. The housing covers the base and forms a receiving space with the base.

[0060] Specifically, the housing assembly 10 further includes an FPC board. The FPC board is arranged on the base, and at least a part of the FPC board is located outside the receiving space. In this application, the first driving coil 62, the second driving coil 64, and the third driving coil are all electrically connected to the FPC board.

[0061] Preferably, limiting posts are respectively arranged on the side walls of the base on both sides in the Z-axis direction. The limiting posts are located between the prism bracket 20 and the lens carrier 50. By setting like this, when the lens carrier 50 moves closer to or away from the prism bracket 20 in the Z-axis direction, the limiting posts can prevent the lens carrier 50 from colliding with the prism bracket 20, thereby ensuring the stability of the periscope lens driving device.

[0062] Optionally, an anti-collision layer is arranged on one side of the prism bracket 20 facing the limiting post.

[0063] Optionally, an anti-collision layer is arranged on one side of the lens carrier 50 facing the limiting post.

[0064] Optionally, a limiting baffle is arranged on the base corresponding to the end of the lens carrier 50 away from the prism bracket 20, and an anti-collision layer is arranged on one end of the lens carrier 50 corresponding to the limiting baffle.

[0065] In a specific embodiment of this application, the anti-collision layer is a soft glue layer, preferably made of TPU material. And the anti-collision layer can be integrally formed by injection molding at both ends of the lens carrier 50 to play the role of anti-collision and structural driving noise reduction.

[0066] Optionally, the prism bracket 20 is provided with an avoidance notch corresponding to the limit post.

[0067] Optionally, the periscope lens driving device further includes a return spring, and the return spring is respectively connected to the base and the side of the prism bracket 20 away from the lens carrier 50.

[0068] Optionally, a counterweight is provided on the bottom surface of the end of the prism bracket 20 away from the lens carrier 50.

[0069] Preferably, there are two return springs, and the two return springs are correspondingly arranged on both sides of the mounting posts of the ball component 30.

[0070] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0071] 1. Effectively solve the problem of poor performance of the periscope lens driving device in the prior art;

[0072] 2. The structure is simple and the performance is stable.

[0073] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0074] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0076] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A periscope lens driving device, characterized in that It includes a housing assembly (10), the housing assembly (10) having a receiving space. The periscope lens driving device further includes the following disposed in the receiving space: A prism bracket (20), inside which a ball bearing (40) is provided; A ball component (30), one end of which extends into the prism bracket (20) and is in rolling contact with the ball bearing (40), and the prism bracket (20) is capable of moving relative to the ball component (30); A lens carrier (50), which is disposed on the side of the prism bracket (20) away from the ball component (30); A first driving component (60), at least a part of which is disposed on the prism bracket (20), and at least another part of which is disposed on the housing assembly (10), so that the prism bracket (20) swings relative to the housing assembly (10) in the X-axis and / or Y-axis directions; A second driving component (70), at least a part of which is disposed on the lens carrier (50), and at least another part of which is disposed on the housing assembly (10), so that the lens carrier (50) can move along the Z-axis direction, and the Z-axis direction is the moving direction of the lens carrier (50) away from or close to the prism bracket (20).

2. The periscope lens driving device according to claim 1, wherein, The ball component (30) includes: A ball support (31), which is disposed on the side of the prism bracket (20) away from the lens carrier (50); A first ball (32), which is disposed on the ball support (31) and is in rolling contact with the ball bearing (40).

3. The periscope lens driving device according to claim 2, characterized in that The thickness of the ball bearing (40) is greater than the radius of the first ball (32); and / or The first ball (32) is made of a ceramic material; and / or The ball bearing (40) is made of copper.

4. The periscope lens driving device according to claim 2, characterized in that, One side of the prism bracket (20) facing the ball support (31) has an abutting groove (21). The end of the ball support (31) provided with the first ball (32) extends into the abutting groove (21). The ball bearing (40) is disposed inside the abutting groove (21). A reinforcing plate (300) is provided at the bottom of the abutting groove (21), and the ball bearing (40) abuts against the reinforcing plate (300).

5. The periscope lens driving device according to claim 4, wherein, An installation groove (211) is provided at the bottom of the abutting groove (21). The reinforcing plate (300) is disposed at the bottom of the installation groove (211). At least a part of the ball bearing (40) is disposed inside the installation groove (211), and at least one dispensing hole (212) is provided at the periphery of the installation groove (211).

6. The periscope lens driving device according to any one of claims 1 to 5, characterized in that, The first driving component (60) includes: A first driving magnet (61); A first driving coil (62), the first driving magnet (61) is disposed on the prism bracket (20), and the first driving coil (62) is disposed on the housing assembly (10) corresponding to the first driving magnet (61); A second driving magnet (63); A second driving coil (64), the second driving magnet (63) is disposed on the prism bracket (20), and the second driving coil (64) is disposed on the housing assembly (10) corresponding to the second driving magnet (63); The first driving magnet (61) and the second driving magnet (63) are respectively disposed on different outer surfaces of the prism bracket (20), and at least one of the side of the first driving magnet (61) facing the first driving coil (62) and the side of the second driving magnet (63) facing the second driving coil (64) has a wavy surface or a serrated surface.

7. The periscope lens driving device according to claim 6, wherein The periscope lens driving device further includes a Hall component (90) and a Hall magnet (91), the Hall magnet (91) is disposed on the lens carrier (50), the Hall component (90) is disposed on the housing assembly (10) corresponding to the Hall magnet (91), and the Hall magnet (91) has at least one non-magnetic region.

8. The periscope lens driving device according to any one of claims 1 to 5, characterized in that, The periscope lens driving device further includes at least two second balls (100) and at least one roller (200), one side of the lens carrier (50) corresponding to the housing assembly (10) has at least two first sliding grooves (11) and at least one third sliding groove (12), the first sliding grooves (11) and the third sliding grooves (12) are respectively disposed on both sides of the moving direction of the lens carrier (50), the housing assembly (10) is provided with at least one second sliding groove (51) corresponding to the first sliding groove (11), at least one of the second balls (100) is disposed in each of the first sliding grooves (11), at least a part of the roller (200) is located inside the third sliding groove (12), at least another part of the roller (200) is in sliding contact with the housing assembly (10), the first sliding groove (11), the second sliding groove (51), and the third sliding groove (12) all extend along the moving direction of the lens carrier (50), and the axial direction of the roller (200) is perpendicular to the moving direction of the lens carrier (50).

9. The periscope lens driving device according to any one of claims 1 to 5, characterized in that, The periscope lens driving device further includes at least one sliding shaft (400) and at least one roller (200). One side of the lens carrier (50) corresponding to the housing assembly (10) has at least one first sliding groove (11) and at least one third sliding groove (12). The first sliding groove (11) and the third sliding groove (12) are respectively arranged on both sides of the moving direction of the lens carrier (50). The housing assembly (10) is provided with at least one second sliding groove (51) corresponding to the first sliding groove (11). At least one of the sliding shafts (400) is arranged in each of the first sliding grooves (11). At least a part of the roller (200) is located inside the third sliding groove (12), and at least another part of the roller (200) is in sliding contact with the housing assembly (10). The first sliding groove (11), the second sliding groove (51), and the third sliding groove (12) all extend along the moving direction of the lens carrier (50), and the axial direction of the roller (200) is perpendicular to the moving direction of the lens carrier (50).

10. An imaging device, characterized in that, The imaging device includes the periscope lens driving device according to any one of claims 1 to 9.

11. A mobile terminal, characterized in that, The mobile terminal includes the imaging device according to claim 10.

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