Periscopic lens driving device, camera device, and mobile terminal

Abstract

Provided are a periscopic lens driving device, a camera device, and a mobile terminal. The periscopic lens driving device comprises a housing assembly (10), wherein the housing assembly (10) has an accommodating space. The periscopic lens driving device further comprises, in an accommodating space: a prism bracket (20), a ball bearing (40) being provided in the prism bracket (20); a ball assembly (30), one end of the ball assembly (30) extending into the prism bracket (20) and being in rolling contact with the ball bearing (40), and the prism bracket (20) being movable relative to the ball assembly (30); a lens carrier (50), the lens carrier (50) being arranged on the side of the prism bracket (20) away from the ball assembly (30); a first driving assembly (60), at least a part of the first driving assembly (60) being arranged on the prism bracket (20), and another part of the first driving assembly (60) being arranged on the housing assembly (10); and a second driving assembly (70), at least a part of the second driving assembly (70) being arranged on the lens carrier (50), and at least another part of the second driving assembly (70) being arranged on the housing assembly (10). The use performance of the periscopic lens driving device is improved.

Description

Periscope lens driving device, camera device and mobile terminal

[0001] This application claims priority to the patent application filed with the State Intellectual Property Office of China on February 4, 2024, with application number 202420276096.3 and invention title “Periscope lens driving device, camera device and mobile terminal” Technical Field

[0002] The utility model relates to the field of camera devices, and in particular to a periscope lens driving device, a camera device and a mobile terminal. Background Art

[0003] With technological advancements, many electronic devices today, such as tablets and smartphones, are equipped with lens modules and feature cameras or video capabilities. Lenses can be broadly categorized as short-focal-length wide-angle lenses and long-focal-length telephoto lenses. However, placing long-focal-length lenses in optical modules increases the thickness of the electronic device, making it difficult to meet the demand for thinner and lighter mobile devices. Existing technologies typically employ a periscope design, which lays the optical path flat and adds a deflecting mirror to rotate the optical path 90 degrees, allowing the entire optical system to lie flat and reduce overall height.

[0004] Existing periscope lens drive devices consist of two parts: a reflector module (prism motor) and a lens module (periscope motor). The reflector module reflects the imaging light 90 degrees before it enters the lens module, which then performs focusing and imaging. Currently, the stabilization solution for periscope modules relies on the reflector module and the lens module to separately or jointly manage stabilization in two directions. Therefore, lens focusing and stabilization require the coordinated drive of the reflector module and the lens module. This presents challenges such as the difficulty of assembling and debugging the two motors, and the large number of components and complex design of the drive device lead to large structural dimensions and low reliability.

[0005] Therefore, there is a problem in the prior art that the periscope lens driving device has poor performance. Utility Model Content

[0006] The main purpose of the present invention is to provide a periscope lens driving device, a camera device and a mobile terminal, so as to solve the problem of poor performance of the periscope lens driving device in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a periscope lens driving device is provided, including a shell assembly, the shell assembly having an accommodating space, and the periscope lens driving device also includes: a prism bracket, a ball bearing is arranged inside the accommodating space; a ball assembly, one end of the ball assembly extends into the prism bracket and is in rolling contact with the ball bearing, and the prism bracket can move relative to the ball assembly; a lens carrier, the lens carrier is arranged on a side of the prism bracket away from the ball assembly; a first driving assembly, at least a portion of the first driving assembly is arranged on the prism bracket, and at least another portion of the first driving assembly is arranged on the shell assembly, so that the prism bracket swings relative to the shell assembly in the X-axis and / or Y-axis direction; a second driving assembly, at least a portion of the second driving assembly is arranged on the lens carrier, and at least another portion of the second driving assembly is arranged on the shell 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 approaching the prism bracket.

[0008] Furthermore, the ball assembly includes: a ball support, which is arranged on a side of the prism bracket away from the lens carrier; a first ball, which is arranged on the ball support and is in 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] Furthermore, the prism bracket has an abutment groove on the side facing the ball support, the ball support is provided with one end of the first ball extending into the abutment groove, the ball bearing is arranged inside the abutment groove, and a reinforcing plate is provided at the bottom of the abutment groove, and the ball bearing abuts against the reinforcing plate.

[0011] Furthermore, a mounting groove is provided at the bottom of the abutting groove, a reinforcing plate is provided at the bottom of the mounting groove, at least a portion of the ball bearing is provided inside the mounting groove, and the periphery of the mounting groove has at least one glue dispensing hole.

[0012] Furthermore, the first driving component includes: a first driving magnet; a first driving coil, the first driving magnet is arranged on the prism bracket, and the first driving coil is arranged on the shell component corresponding to the first driving magnet; a second driving magnet; a second driving coil, the second driving magnet is arranged on the prism bracket, and the second driving coil is arranged on the shell component corresponding to the second driving magnet; the first driving magnet and the second driving magnet are respectively arranged 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 also includes a Hall assembly and a Hall magnet. The Hall magnet is arranged on the lens carrier. The Hall magnet corresponding to the Hall assembly is arranged on the shell assembly, and the Hall magnet has at least one non-magnetic area.

[0014] Furthermore, the periscope lens driving device also includes at least two second balls and at least one roller. The lens carrier has at least two first slide grooves and at least one third slide groove on one side of the shell assembly corresponding to the lens carrier. The first slide groove and the third slide groove are respectively arranged on both sides of the movement direction of the lens carrier. The shell assembly is provided with at least one second slide groove corresponding to the first slide groove. At least one second ball is arranged in each first slide groove. At least a part of the roller is located inside the third slide groove, and at least another part of the roller is in sliding contact with the shell assembly. The first slide groove, the second slide groove, and the third slide groove all extend along the movement direction of the lens carrier, and the axial direction of the roller is perpendicular to the movement direction of the lens carrier.

[0015] Furthermore, the periscope lens driving device also includes at least one sliding shaft and at least one roller. The lens carrier has at least one first sliding groove and at least one third sliding groove on one side of the shell assembly corresponding to the lens carrier. The first sliding groove and the third sliding groove are respectively arranged on both sides of the movement direction of the lens carrier. The shell assembly is provided with at least one second sliding groove corresponding to the first sliding groove. Each first sliding groove is provided with at least one sliding shaft. At least a part of the roller is located inside the third sliding groove, and at least another part of the roller is in sliding contact with the shell assembly. The first sliding groove, the second sliding groove, and the third sliding groove all extend along the movement direction of the lens carrier, and the axial direction of the roller is perpendicular to the movement direction of the lens carrier.

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

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

[0018] Applying the technical solution of the present invention, the periscope lens drive device of the present application includes a housing assembly having an accommodating space, and further includes a prism holder, a ball assembly, a lens carrier, a first drive assembly, and a second drive assembly disposed within the accommodating space. A ball bearing is disposed within the prism holder; one end of the ball assembly extends into the prism holder and is in rolling contact with the ball bearing, and the prism holder is capable of moving relative to the ball assembly; the lens carrier is disposed on a side of the prism holder away from the ball assembly; at least a portion of the first drive assembly is disposed on the prism holder, and at least another portion of the first drive assembly is disposed on the housing assembly, so that the prism holder swings relative to the housing assembly in the X-axis and / or Y-axis directions; at least a portion of the second drive assembly is disposed on the lens carrier, and at least another portion of the second drive assembly is disposed on the housing assembly, so that the lens carrier is capable of moving along the Z-axis direction, which is the direction of movement of the lens carrier away from or toward the prism holder.

[0019] When using the periscope lens drive device of the present application, since the first drive assembly is used to drive the prism holder to swing relative to the housing assembly in the X- and Y-axis directions, lens anti-shake can be achieved through the movement of the prism holder alone. Furthermore, since the second drive assembly enables the lens carrier to move in the Z-axis direction, when focusing is required, only the second drive assembly is required to drive the lens carrier. Furthermore, since the prism holder is provided with a ball bearing, the interaction between the ball bearing and the ball assembly ensures smoother anti-shake movement of the prism holder. Furthermore, the provision of the ball bearing effectively reduces the force acting between the ball assembly and the prism holder, thereby providing a certain degree of protection for the prism holder. Furthermore, when subjected to external impact, the ball bearing is more evenly impacted by the ball assembly, is less likely to deform, and has better strength. The center consistency of the actuator assembly is also excellent in different postures, thereby improving drive performance. Therefore, the periscope lens drive device of the present application effectively solves the problem of poor performance of periscope lens drive devices in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] FIG1 shows an exploded view of a periscope lens driving device according to a specific embodiment of the present invention;

[0022] FIG2 is a schematic diagram showing the positional relationship between the lens carrier, the second ball and the roller of the periscope lens driving device in FIG1 ;

[0023] FIG3 is a schematic diagram showing the positional relationship between the prism bracket and the ball bearing of the periscope lens driving device in FIG1 ;

[0024] FIG4 is a schematic diagram showing the positional relationship among the prism holder, the first driving magnet, the first driving coil, the second driving magnet, and the second driving coil of the periscope lens driving device in FIG1 ;

[0025] FIG5 is a schematic diagram showing the positional relationship between the housing assembly and the second ball of the periscope lens driving device in FIG1 ;

[0026] FIG6 is a schematic diagram showing the positional relationship between the Hall assembly and the Hall magnet of the periscope lens driving device in FIG1 ;

[0027] FIG7 is a schematic diagram showing the positional relationship between the ball assembly and the prism bracket of the periscope lens driving device in FIG1 ;

[0028] FIG8 shows a relationship between the magnetic field strength sensed by a Hall chip simulated by a conventional Hall magnet structure and the position (stroke);

[0029] FIG9 shows a relationship diagram between the magnetic field intensity sensed by the Hall chip simulated by the Hall magnet structure of the present invention and the position (stroke);

[0030] FIG10 shows a schematic structural diagram of a lens carrier in another specific embodiment of the present application;

[0031] FIG11 is a schematic diagram showing the positional relationship between the housing assembly and the sliding shaft in another specific embodiment of the present application.

[0032] The above drawings include the following reference numerals:

[0033] 10. Shell assembly; 11. First slide groove; 12. Third slide groove; 20. Prism bracket; 21. Abutment 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 slide groove; 60. First drive assembly; 61. First drive magnet; 62. First drive coil; 63. Second drive magnet; 64. Second drive coil; 70. Second drive assembly; 90. Hall assembly; 91. Hall magnet; 100. Second ball; 200. Roller; 300. Reinforcement plate; 400. Sliding shaft. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

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

[0038] Furthermore, 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, a mobile terminal generally refers to a mobile phone or a laptop computer with photo and video functions.

[0039] As shown in Figures 1 to 7, the periscope lens driving device in the present application includes a shell assembly 10, the shell assembly 10 has an accommodating space, and the periscope lens driving device also includes a prism bracket 20, a ball assembly 30, a lens carrier 50, a first driving assembly 60 and a second driving assembly 70 arranged in the accommodating space. A ball bearing 40 is provided inside the prism holder 20; one end of the ball assembly 30 extends into the prism holder 20 and is in rolling contact with the ball bearing 40, and the prism holder 20 can move relative to the ball assembly 30; the lens carrier 50 is arranged on the side of the prism holder 20 away from the ball assembly 30; at least a portion of the first drive assembly 60 is arranged on the prism holder 20, and at least another portion of the first drive assembly 60 is arranged on the shell assembly 10, so that the prism holder 20 swings relative to the shell assembly 10 in the X-axis and / or Y-axis direction; at least a portion of the second drive assembly 70 is arranged on the lens carrier 50, and at least another portion of the second drive assembly 70 is arranged on the shell assembly 10, so that the lens carrier 50 can move along the Z-axis direction, and the Z-axis direction is the movement direction of the lens carrier 50 away from or approaching the prism holder 20.

[0040] When using the periscope lens drive device of the present application, since the first drive assembly 60 is used to drive the prism holder 20 to swing relative to the housing assembly 10 in the X- and Y-axis directions, lens anti-shake can be achieved through the movement of the prism holder 20 alone. Furthermore, since the second drive assembly 70 can move the lens carrier 50 along the Z-axis, when focusing is required, only the second drive assembly 70 needs to be used to drive the lens carrier 50. Furthermore, since the prism holder 20 is provided with a ball bearing 40, the ball assembly 30, through the first ball 32, circumferentially rolls in contact with the inner side of the ball bearing 40, which greatly reduces rolling friction resistance and the uncertainty of the direction of friction resistance, and reduces interference of the rolling cooperation between the ball assembly 30 and the prism holder 20 on the drive system. Furthermore, the mutual cooperation between the ball bearing 40 and the ball assembly 30 ensures smoother anti-shake movement of the prism holder 20, improving the precision and performance of the anti-shake drive. Furthermore, the provision of the ball bearing 40 effectively reduces the forces acting between the ball assembly 30 and the prism holder 20, thereby providing a degree of protection for the prism holder 20. Furthermore, when subjected to external impact, the ball bearing 40 receives the impact force from the ball assembly 30 more evenly, is less likely to deform, and exhibits superior strength. This also improves the consistency of the centering of the actuator assembly in different postures, thereby enhancing driving performance. Therefore, the periscope lens drive device of this application effectively resolves the poor performance issues of prior art periscope lens drive devices.

[0041] In the present 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 friction resistance with unstable direction between the prism bracket 20 and the ball assembly 30, causing high-frequency jumps in the driving signal, causing large interference to the driving system, and affecting the anti-shake driving performance; in addition, when subjected to external force impact, the ball assembly 30 hits the prism bracket 20, and the prism bracket 20 is easily deformed due to the concentrated impact force on the inner plane, and the accuracy is reduced, which leads to a larger difference in the center degree of the moving sub-assembly of the structure in different postures, affecting the driving 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 holder 20 away from the lens carrier 50. The first ball 32 is disposed on the ball support 31 and 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 sidewall of the housing assembly 10. The mounting post is disposed on the support body and extends toward the prism holder 20. The 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, a mounting column is provided on the support body and one end of the mounting column is extended into the interior of the prism bracket 20, which can also limit the movement of the prism bracket 20, thereby preventing the prism bracket 20 from deviating during the movement, thereby ensuring the stability of the movement of the prism bracket 20.

[0044] Optionally, the support body has connecting arms on both sides, and the support body is arranged on the housing assembly 10 through the connecting arms. Through this arrangement, when the prism bracket 20 swings, the stability of the support body can be effectively guaranteed, 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 prism holder 20 has an abutment groove 21 on one side facing the ball bearing 31. One end of the ball bearing 31, which is provided with a first ball 32, extends into the abutment groove 21. A ball bearing 40 is disposed within the abutment groove 21. A reinforcing plate 300 is disposed at the bottom of the abutment groove 21, and the ball bearing 40 abuts against the reinforcing plate 300. In this application, when the prism holder 20 swings along the X-axis and the Y-axis, the first ball 32 can always be in contact with the reinforcing plate 300.

[0049] Optionally, a mounting groove 211 is provided at the bottom of the abutment groove 21, a reinforcing plate 300 is disposed at the bottom of the mounting groove 211, at least a portion of the ball bearing 40 is disposed within the mounting groove 211, and at least one glue hole 212 is provided around the periphery of the mounting groove 211. This arrangement effectively improves the stability of the connection between the ball bearing 40 and the prism holder 20.

[0050] Preferably, the reinforcing plate 300 is a metal plate, which can not only protect the prism bracket 20 to a certain extent, but also reduce the friction between the prism bracket 20 and the ball assembly 30 .

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

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

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

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

[0055] Optionally, the periscope lens drive device further includes a Hall element 90 and a Hall magnet 91, wherein the Hall element 90 includes a Hall chip, the Hall magnet 91 is disposed on the lens carrier 50, and the Hall element 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. In the present application, by providing the non-magnetic region, the magnetic field strength at the two extreme ends of the Hall magnet is improved, the variation in magnetic field strength is increased, and thus the sensor sensitivity is improved, which is beneficial to the closed-loop drive control accuracy of the periscope telephoto lens.

[0056] In a specific embodiment of the present application, the length of the non-magnetic zone in the optical axis direction is set to 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 zone, the size of the Hall magnet 91 can be minimized. The ratio between the length of the Hall magnet 91 in the optical axis direction and the mechanical stroke range 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-level magnetized magnet, and the non-magnetic zone is arranged in the center of the multi-level magnetized magnet in the optical axis direction. Since the multi-level magnetized magnet itself has a non-magnetic zone, in order to improve the driving performance of the multi-level magnetized magnet and the driving coil, the existing technology generally requires that the span of the non-magnetic zone in the polarization direction is as small as possible. Currently, the span of the non-magnetic zone in the polarization direction is generally set to be less than or equal to 0.4 mm. In this embodiment, in order to achieve a better change in the magnetic field intensity at the end, the span of the non-magnetic zone in the optical axis direction can be set to be greater than or equal to 1 mm. Furthermore, in order to obtain a better detected curvature of magnetic field intensity variation, the spacing between the Hall chip and the multi-stage magnetized magnet in the Y-axis direction can be set to 0.3mm to 0.5mm. Figures 8 and 9 are respectively the curves of magnetic induction intensity variation within a simulated driving stroke of ±1625mm when the span of the non-magnetic region of the Hall magnet 91 in the polarization direction is set to 0.2mm and 1.7mm. As can be seen from the figures, the nonlinearity of the magnetic field at both ends can be well corrected by the arrangement of the non-magnetic region, so that the nonlinear error of the magnetic field intensity variation curve within the entire driving stroke is small. Even when the Hall chip passes through the corresponding areas at both ends in the optical axis direction of the Hall magnet 91, the change in magnetic field intensity in this part of the stroke remains large.

[0057] Specifically, the periscope lens drive device further includes at least two second balls 100 and at least one roller 200. The lens carrier 50 has at least two first grooves 11 and at least one third groove 12 on the side corresponding to the housing assembly 10. The first grooves 11 and the third grooves 12 are respectively arranged on either side of the movement direction of the lens carrier 50. The housing assembly 10 is provided with at least one second groove 51 corresponding to the first groove 11. At least one second ball 100 is disposed within each first groove 11. At least a portion of the roller 200 is located within the third groove 12, and at least another portion of the roller 200 is in sliding contact with the housing assembly 10. The first grooves 11, the second grooves 51, and the third grooves 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 along the Z-axis, while the axial direction of the roller 200 extends along the X-axis. Furthermore, this arrangement allows the ball bearings to guide the movement of the lens carrier 50, while the rollers 200 provide support for the lens carrier 50. Furthermore, compared to ball bearings, the rollers 200 provide a larger contact area with the lens carrier 50. Therefore, when subjected to external impact, the rollers 200 can better protect the lens carrier 50 and reduce damage to the lens carrier 50. Optionally, at least one of the first slide groove 11 and the second slide groove 51 can be a V-shaped groove.

[0058] In another specific embodiment of the present application, as shown in Figures 10 and 11, the periscope lens driving device also includes at least one sliding shaft 400 and at least one roller 200. The lens carrier 50 has at least one first sliding groove 11 and at least one third sliding groove 12 on one side of the shell assembly 10 corresponding to the lens carrier 50. The first sliding groove 11 and the third sliding groove 12 are respectively arranged on both sides of the movement direction of the lens carrier 50. The shell assembly 10 is provided with at least one second sliding groove 51 corresponding to the first sliding groove 11. Each first sliding groove 11 is provided with at least one sliding shaft 400. At least a portion of the roller 200 is located inside the third sliding groove 12, and at least another portion of the roller 200 is in sliding contact with the shell assembly 10. The first sliding groove 11, the second sliding groove 51, and the third sliding groove 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 this embodiment, when the periscope lens driving device is subjected to external force or impact, the use of the sliding shaft 400 instead of the second ball bearing can effectively reduce the pits generated by the lens carrier 50 and the housing assembly 10 being impacted.

[0059] Specifically, the housing assembly 10 includes a shell and a base. The shell is covered on the base and forms an accommodating space with the base.

[0060] Specifically, the housing assembly 10 further includes an FPC board, which is disposed on the base, and at least a portion of the FPC board is located outside the accommodating space. In the present application, the first drive coil 62, the second drive coil 64, and the third drive coil are all electrically connected to the FPC board.

[0061] Preferably, the base is provided with limit posts on both side walls in the Z-axis direction, and the limit posts are located between the prism holder 20 and the lens carrier 50. With this arrangement, when the lens carrier 50 moves toward or away from the prism holder 20 along the Z-axis direction, the limit posts can prevent the lens carrier 50 from colliding with the prism holder 20, thereby ensuring the stability of the periscope lens driving device.

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

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

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

[0065] In a specific embodiment of the present application, the anti-collision layer is a soft rubber layer, preferably made of TPU material. Moreover, the anti-collision layer can be formed on both ends of the lens carrier 50 by injection molding, playing the role of anti-collision and structural drive noise reduction.

[0066] Optionally, the prism bracket 20 is provided with an avoidance gap corresponding to the limiting column.

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

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

[0069] Preferably, there are two return springs, which are correspondingly arranged on both sides of the mounting column of the ball assembly 30 .

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

[0071] 1. Effectively solve the problem of poor performance of periscope lens driving devices in the existing technology;

[0072] 2. Simple structure and stable performance.

[0073] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[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 the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0075] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A periscope lens driving device, characterized in that: The periscope lens driving device comprises a housing assembly (10), wherein the housing assembly (10) has an accommodating space, and further comprises: A prism bracket (20), wherein a ball bearing (40) is provided inside the prism bracket (20); a ball assembly (30), one end of the ball assembly (30) extending into the prism bracket (20) and in rolling contact with the ball bearing (40), and the prism bracket (20) is capable of moving relative to the ball assembly (30); a lens carrier (50), the lens carrier (50) being arranged on a side of the prism support (20) away from the ball assembly (30); a first driving assembly (60), at least a portion of the first driving assembly (60) being disposed on the prism support (20), and at least another portion of the first driving assembly (60) being disposed on the housing assembly (10), so as to enable the prism support (20) to swing relative to the housing assembly (10) in the X-axis and / or Y-axis directions; A second drive assembly (70), at least a portion of the second drive assembly (70) is arranged on the lens carrier (50), and at least another portion of the second drive assembly (70) is arranged on the housing assembly (10), so that the lens carrier (50) can move along a Z-axis direction, wherein the Z-axis direction is the direction in which the lens carrier (50) moves away from or toward the prism holder (20).

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

3. The periscope lens driving device according to claim 2, wherein: 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 ceramic material; and / or The ball bearing (40) is made of copper.

4. The periscope lens driving device according to claim 2, wherein: The prism bracket (20) has an abutment groove (21) on one side facing the ball support (31); one end of the first ball (32) provided on the ball support (31) extends into the abutment groove (21); the ball bearing (40) is arranged inside the abutment groove (21); a reinforcing plate (300) is provided at the bottom of the abutment groove (21); and the ball bearing (40) abuts against the reinforcing plate (300).

5. The periscope lens driving device according to claim 4, wherein: The bottom of the abutting groove (21) is provided with a mounting groove (211), the reinforcing plate (300) is provided at the bottom of the mounting groove (211), at least a portion of the ball bearing (40) is provided inside the mounting groove (211), and the periphery of the mounting groove (211) has at least one glue dispensing hole (212).

6. The periscope lens driving device according to any one of claims 1 to 5, wherein: The first drive assembly (60) comprises: a first driving magnet (61); a first driving coil (62), the first driving magnet (61) being arranged on the prism bracket (20), and the first driving coil (62) being arranged 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) being arranged on the prism bracket (20), and the second driving coil (64) being 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 sawtooth surface.

7. The periscope lens driving device according to claim 6, wherein: The periscope lens driving device further comprises a Hall assembly (90) and a Hall magnet (91), wherein 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.

8. The periscope lens driving device according to any one of claims 1 to 5, wherein: The periscope lens driving device further comprises at least two second balls (100) and at least one roller (200); the lens carrier (50) has at least two first slide grooves (11) and at least one third slide groove (12) on one side corresponding to the shell assembly (10); the first slide grooves (11) and the third slide grooves (12) are respectively arranged on both sides of the movement direction of the lens carrier (50); the shell assembly (10) is provided with at least one second slide groove (51) corresponding to the first slide groove (11); each first slide groove (11) is provided with at least one second ball (100); at least a portion of the roller (200) is located inside the third slide groove (12); at least another portion of the roller (200) is in sliding contact with the shell assembly (10); the first slide groove (11), the second slide groove (51) and the third slide groove (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).

9. The periscope lens driving device according to any one of claims 1 to 5, wherein: The periscope lens driving device further comprises at least one sliding shaft (400) and at least one roller (200), the lens carrier (50) having at least one first sliding groove (11) and at least one third sliding groove (12) on one side corresponding to the shell assembly (10), the first sliding groove (11) and the third sliding groove (12) being respectively arranged on both sides of the movement direction of the lens carrier (50), the shell assembly (10) being provided with at least one second sliding groove (51) corresponding to the first sliding groove (11), each of the first sliding grooves (11) being provided with at least one sliding shaft (400), at least a portion of the roller (200) being located inside the third sliding groove (12), at least another portion of the roller (200) being in sliding contact with the shell assembly (10), the first sliding groove (11), the second sliding groove (51) and the third sliding groove (12) all extending along the movement direction of the lens carrier (50), and the axial direction of the roller (200) being perpendicular to the movement direction of the lens carrier (50).

10. A camera device, characterized in that: The camera 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 camera device according to claim 10.

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