Periscopic camera shooting driving device

Abstract

The utility model provides a periscopic camera shooting driving device, and relates to the technical field of optical element driving. The device comprises a base, a carrier assembly, a driving assembly, a prism guiding assembly, a lens guiding assembly, a connecting piece and a circuit board. The carrier assembly is arranged in the base, the driving assembly is arranged between the carrier assembly and the base, the base is connected with the circuit board, the circuit board is electrically connected with the driving assembly, the connecting piece is fixedly connected with the base, the prism guiding assembly is arranged between the connecting piece and the carrier assembly, and bosses are arranged on the two sides of the bottom of the base respectively. The lens guiding assembly comprises first balls and a guide rail, the guide rail is fixedly connected with the top of the boss to form a bridging structure, and the first balls are arranged at the bottoms of the guide rail and the carrier assembly. According to the technical scheme, the technical problems that in the using process of a ball guide structure in the prior art, a ball groove in the base is prone to sinking, the impact resistance effect of a motor is poor, and the reliability of the motor is affected can be solved.

Description

Technical Field

[0001] The present application relates to the field of optical element driving technology, and in particular to a periscope camera driving device. Background Art

[0002] In recent years, with the rapid development of camera lens technology, periscope lenses have been widely used in various electronic products. The periscope lens module of the periscope lens is a lens module that completes optical zoom inside the fuselage, generally including a lens part and a prism part. In order to achieve a wide range of zoom function, both the lens part and the prism part need to be equipped with corresponding drive units to form a complete periscope lens drive device.

[0003] When the existing periscope lens driving device is working, the lens driving unit needs to control the lens to perform linear motion along the optical axis of the lens, and a guide component is required for the linear motion of the lens along the optical axis; the existing guide components mostly use balls, and a ball groove is provided at the bottom of the base, and the ball is arranged in the ball groove. The defect of this structure is that during the use of the motor, the ball groove of the base is prone to dents, the motor has poor impact resistance, and the reliability of the motor is affected. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a periscope camera drive device to solve the problem in the prior art that during use of the ball guide structure, the ball groove on the base is prone to depression, the motor has poor impact resistance, and the reliability of the motor is affected.

[0005] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] The present application provides a periscope camera drive device, comprising: a base, a carrier assembly, a drive assembly, a prism guide assembly, a lens guide assembly, a connector and a circuit board; the carrier assembly is arranged in the base, and a drive assembly is arranged between the carrier assembly and the base, a circuit board is connected to the base, the circuit board is electrically connected to the drive assembly, the connector is fixedly connected to the base, a prism guide assembly is arranged between the connector and the carrier assembly, bosses are respectively arranged on both sides of the bottom of the base, the lens guide assembly comprises a first ball and a guide rail, the guide rails are respectively fixedly connected to the top of the bosses to form a bridging structure, and the first ball is arranged at the bottom of the guide rail and the carrier assembly.

[0007] In some modified embodiments of the present application, the carrier assembly includes: a prism, a prism carrier, a lens and a lens carrier; the prism carrier and the lens carrier are arranged side by side in the base, the prism is arranged in the prism carrier, and the lens is arranged in the lens carrier.

[0008] In some modified implementations of the present application, a first ball rolling groove is provided at the bottom of the lens carrier, and the first ball rolling groove is provided between the first ball rolling groove and the guide rail;

[0009] Wherein, the number of the first ball grooves is at least three, and the number of the guide rails is two.

[0010] In some modified implementations of the present application, the guide rail is a steel sheet, and the guide rail is attracted to the drive assembly to pre-press the first ball.

[0011] In some modified embodiments of the present application, it also includes: a cross-adapter, the prism guide assembly includes a second ball and a third ball; the cross-adapter is provided with a second ball groove a on the side close to the prism carrier, the prism carrier is provided with a second ball groove b corresponding to the second ball groove a, and the second ball is arranged between the second ball groove a and the second ball groove b; the connecting member is provided with a third ball groove a on the side close to the cross-adapter, the cross-adapter is provided with a third ball groove b corresponding to the third ball groove a, and the third ball is arranged between the third ball groove a and the third ball groove b.

[0012] In some modified implementations of the present application, it also includes: an upper cover, which is fixedly connected to the base, and an anti-collision block is provided at the lower end of the upper cover.

[0013] In some modified embodiments of the present application, the driving component includes a prism driving component and a lens driving component, the prism driving component is arranged between the base and the prism carrier, and the lens driving component is arranged between the base and the lens carrier; the lens driving component includes a first driving magnet and a first driving coil, the first driving magnet is embedded in the outer side surface of the lens carrier, and the first driving coil corresponding to the first driving magnet is arranged on the circuit board and electrically connected to the circuit board.

[0014] In some modified embodiments of the present application, the prism driving assembly includes a second driving magnet, a second driving coil, a third driving magnet and a third driving coil; the second driving magnet is arranged at the bottom of the prism carrier, and the second driving coil corresponding to the second driving magnet is arranged on the circuit board and electrically connected to the circuit board; the third driving magnet is arranged on the outer side surface of the prism carrier, and the third driving coil corresponding to the third driving magnet is arranged on the circuit board and electrically connected to the circuit board.

[0015] In some modified embodiments of the present application, it also includes: a closed-loop component, the closed-loop component includes a first sensor, a second sensor and a third sensor, the first sensor is arranged in the first drive coil, the first sensor is fixed on the circuit board and is electrically connected to the circuit board; the second sensor is arranged in the second drive coil, the second sensor is fixed on the circuit board and is electrically connected to the circuit board; the third sensor is arranged in the third drive coil, the third sensor is fixed on the circuit board and is electrically connected to the circuit board.

[0016] In some modified implementations of the present application, it also includes: a spring sheet, which is arranged between the prism carrier and the connecting member, and is fixedly connected to the prism carrier and the connecting member respectively.

[0017] Compared with the prior art, the periscope camera drive device provided in the present application adds a guide rail between the first ball and the base in the lens part, and bosses are provided on both sides of the bottom of the base. The guide rails are fixedly connected to the tops of the bosses to form a bridge structure, and the bottom of the guide rails is suspended to provide swinging space for the guide rails. During the movement of the motor, the guidance of the added guide rails can reduce the depth of the ball pits compared to the guidance of the ball directly contacting the base, has an impact-resistant effect, and enhances the reliability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0019] Figure 1 The exploded schematic diagram of the periscope camera driving device in the utility model is schematically shown;

[0020] Figure 2 The schematic diagram of the structure of the circuit board connected with the driving coil and the closed-loop component in the utility model is schematically shown;

[0021] Figure 3 The exploded view schematically shows the first guide connection between the prism carrier and the connecting member in the utility model;

[0022] Figure 4 An exploded schematic diagram schematically shows a second guide connection between the prism carrier and the connecting member in the utility model;

[0023] Figure 5 The schematic diagram of the structure of the connection between the prism carrier and the second driving magnet and the third driving magnet in the utility model is schematically shown;

[0024] Figure 6 A schematic plan view of the placement of the lens guide rail in the present invention is shown schematically;

[0025] Figure 7 The exploded view schematically shows the connection between the lens carrier and the lens guide assembly in the utility model;

[0026] Figure 8 The structure diagram of the periscope camera driving device in the utility model is schematically shown.

[0027] Description of Figure Numbers:

[0028] 1. Circuit board; 2. Carrier assembly; 21. Prism; 22. Prism carrier; 221. Second ball groove b; 23. Lens; 24. Lens carrier; 241. First ball groove; 3. Driving assembly; 31. Prism driving assembly; 311. Second driving magnet; 312. Second driving coil; 313. Third driving magnet; 314. Third driving coil; 32. Lens driving assembly; 321. First driving magnet; 322. First driving coil; 4. Prism guide assembly; 41, second ball; 42, third ball; 5, lens guide assembly; 51, first ball; 52, guide rail; 6, connector; 61, third ball groove a; 7, base; 71, boss; 8, cross adapter; 81, second ball groove a; 82, third ball groove b; 9, upper cover; 91, anti-collision block; 10, closed-loop assembly; 101, first sensor; 102, second sensor; 103, third sensor; 11, spring piece. DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs. Example

[0031] like Figures 1 to 8As shown, this embodiment provides a periscope camera driving device, including: a circuit board 1, a carrier assembly 2, a driving assembly 3, a prism guide assembly 4, a lens guide assembly 5, a connecting piece 6, a base 7, a cross adapter 8, an upper cover 9, a closed loop assembly 10, a spring 11 and a protective shell; the protective shell is buckled with the base 7 as a whole to form a space for accommodating other structures; the base 7 is connected with a circuit board 1, and the circuit board 1 is preferably an FPCB circuit board; the carrier assembly 2 is arranged in the base 7, and a driving assembly 3 is arranged between the carrier assembly 2 and the base 7, the driving assembly 3 is electrically connected to the circuit board 1, the connecting piece 6 is fixedly connected to the base 7, a prism guide assembly 4 is arranged between the connecting piece 6 and the carrier assembly 2, a cross adapter 8 is arranged between the connecting piece 6 and the carrier assembly 2, and the cross adapter 8 is respectively connected to the connecting piece 6 and the prism carrier 22. There are prism guide assemblies 4, and the lens guide The component 5 is arranged between the lens carrier 24 and the base 7, and bosses 71 are respectively provided on both sides of the bottom of the base 7. The lens guide component 5 includes a first ball 51 and a guide rail 52. The guide rail 52 is respectively fixedly connected to the top of the boss 71 to form a bridge structure. The bottom of the guide rail 52 is suspended to provide a swing space for the guide rail 52. The first ball 51 is provided at the bottom of the guide rail 52 and the carrier component 2; the upper cover 9 is fixedly connected to the base 7, and its function is to prevent collision and prevent the prism carrier 22 and the lens carrier 24 from falling off during rotation and linear motion; the closed-loop component 10 is arranged in the driving component 3, and the closed-loop component 10 is fixed on the circuit board 1 and electrically connected to the circuit board 1; the spring 11 is arranged between the carrier component 2 and the connecting piece 6, and the spring 11 has reset and pre-stressing functions; the driving component 3 uses the guide of the prism guide component 4 and the lens guide component 5 to drive the carrier component 2 to move.

[0032] The lens part of the device adds a guide rail 52 between the first ball 51 and the base 7. During the movement of the motor, the guidance of the guide rail 52 can reduce the depth of the pit of the first ball 51 compared to the guidance of the first ball 51 directly contacting the base 7, has an impact-resistant effect, and enhances the reliability of the motor. This solves the problem in the prior art that a ball groove is set between the bottom of the base 7, and the ball is set in the ball groove. During the movement of the motor, the ball groove is prone to depression.

[0033] like Figure 1 , Figure 8 As shown, in a specific implementation, the carrier assembly 2 includes: a prism 21, a prism carrier 22, a lens 23 and a lens carrier 24; the prism carrier 22 and the lens carrier 24 are arranged side by side in the base 7, the prism 21 is arranged in the prism carrier 22, and the lens 23 is arranged in the lens carrier 24.

[0034] like Figure 1 , Figure 6 , Figure 7As shown, in a specific implementation, a first ball rolling groove 241 is provided at the bottom of the lens carrier 24, the number of the first ball rolling grooves 241 is at least three, preferably three, the number of the guide rails 52 is preferably two, one guide rail 52 is a flat plate type, and the other guide rail 52 is a groove type; the first ball 51 is provided between the first ball rolling groove 241 and the guide rail 52, the number of the first ball rolling grooves 241 is adapted to the number of the first ball rolling grooves 241, preferably three, and three first balls 51 are used to form a support plane to avoid up and down shaking, so that the horizontal sliding of the lens carrier 24 is smoother;

[0035] Specifically, the guide rail 52 is a steel sheet, and the guide rail 52 and the driving magnet of the driving assembly 3 generate magnetic attraction, so that the first ball 51 is pre-stressed and in contact with the guide rail 52, and there is no need to set up a separate pre-stressing part, which makes the motor structure simple and reduces the motor cost at the same time; the steel sheet has an elastic structural function and can be regarded as an elastic material with impact resistance, which reduces the depth of the pit of the first ball 51 and enhances the reliability of the motor, so as to solve the problems in the prior art that a separate pre-stressing part is needed to pre-stress the ball, making the motor structure complicated and increasing the motor cost.

[0036] like Figure 1 , Figure 3 , Figure 4 As shown, in a specific implementation, the prism guide assembly 4 includes a second ball 41 and a third ball 42, a second ball groove a81 is provided on the side of the cross adapter 8 close to the prism carrier 22, a second ball groove b221 corresponding to the second ball groove a81 is provided on the prism carrier 22, and the second ball 41 is arranged between the second ball groove a81 and the second ball groove b221; a third ball groove a61 is provided on the side of the connecting member 6 close to the cross adapter 8, a third ball groove b82 corresponding to the third ball groove a61 is provided on the cross adapter 8, and the third ball 42 is arranged between the third ball groove a61 and the third ball groove b82.

[0037] like Figure 1 , Figure 8 As shown, in a specific implementation, an anti-collision block 91 is provided at the lower end of the upper cover 9. The number of upper covers 9 is preferably two, and two anti-collision blocks 91 are preferably provided on each upper cover 9. One anti-collision block 91 is placed between the base 7 and the lens carrier 24 after the upper cover 9 is buckled, and the other is provided between the lens carrier 24 and the prism carrier 22. The anti-collision block 91 can adopt a soft rubber structure, which can improve abnormal noise during movement.

[0038] like Figure 1 , Figure 5As shown, in a specific implementation, the driving component 3 includes a prism driving component 31 and a lens driving component 32; the lens driving component 32 includes a first driving magnet 321 and a first driving coil 322, the first driving magnet 321 is embedded in the outer side surface of the lens carrier 24, the first driving coil 322 is arranged on the circuit board 1 and is electrically connected to the circuit board 1, the first driving coil 322 and the first driving magnet 321 are arranged correspondingly, and the first driving magnet 321 and the first driving coil 322 are used to control the lens 23 and the lens carrier 24 to perform linear motion along the optical axis of the lens 23.

[0039] The prism driving assembly 31 includes a second driving magnet 311, a second driving coil 312, a third driving magnet 313 and a third driving coil 314; the second driving magnet 311 is arranged at the bottom of the prism carrier 22, the second driving coil 312 is arranged on the circuit board 1 and is electrically connected to the circuit board 1, and the second driving magnet 311 and the second driving coil 312 are used to control the prism 21 and the prism carrier 22 to rotate with the y-axis as the rotation axis; the third driving magnet 313 is arranged on the outer side of the prism carrier 22, the third driving coil 314 is arranged on the circuit board 1 and is electrically connected to the circuit board 1, and the third driving magnet 313 and the third driving coil 314 are used to control the prism 21, the prism carrier 22 and the cross adapter 8 to rotate with the z-axis as the rotation axis, wherein the x-axis in this embodiment is the direction of the lens optical axis, the y-axis is perpendicular to the x-axis in the horizontal direction, and the z-axis is perpendicular to the x-axis in the vertical direction;

[0040] The second driving magnet 311 is disposed correspondingly to the second driving coil 312 , and the third driving magnet 313 is disposed correspondingly to the third driving coil 314 .

[0041] like Figure 2 As shown, in a specific implementation, the closed-loop component 10 includes a first sensor 101, a second sensor 102 and a third sensor 103. The first sensor 101 is arranged in the first driving coil 322, the first sensor 101 is fixed on the circuit board 1 and electrically connected to the circuit board 1, and is used to detect and feedback the movement of the lens 23 and the lens carrier 24 along the optical axis of the lens 23; the second sensor 102 is arranged in the second driving coil 312, the second sensor 102 is fixed on the circuit board 1 and electrically connected to the circuit board 1, and is used to detect and feedback the movement of the prism 21 and the prism carrier 22 with the y-axis as the rotation axis; the third sensor 103 is arranged in the third driving coil 314, the third sensor 103 is fixed on the circuit board 1 and electrically connected to the circuit board 1, and is used to detect and feedback the movement of the prism 21, the prism carrier 22 and the cross adapter 8 with the z-axis as the rotation axis.

[0042] like Figure 1 As shown, in a specific implementation, the spring piece 11 is disposed between the prism carrier 22 and the connecting member 6 , and is fixedly connected to the prism carrier 22 and the connecting member 6 , respectively.

[0043] Working principle:

[0044] The circuit board 1 receives an external electrical signal and transmits the electrical signal to the second driving coil 312. The magnetic field generated by the second driving coil 312 and the second driving magnet 311 interact with each other to form a Lorentz force, thereby jointly driving the prism 21 and the prism carrier 22 to rotate with the y-axis as the rotation axis;

[0045] The circuit board 1 receives an external electrical signal and transmits the electrical signal to the third driving coil 314. The magnetic field generated by the third driving coil 314 and the third driving magnet 313 interacts with each other to form a Lorentz force, thereby driving the prism 21, the prism carrier 22 and the cross adapter 8 to rotate together with the z-axis as the rotation axis.

[0046] The circuit board 1 receives an external electrical signal and transmits the electrical signal to the first driving coil 322. The magnetic field generated by the first driving coil 322 and the first driving magnet 321 interacts with each other to form a Lorentz force, thereby driving the lens 23 and the lens carrier 24 to move linearly along the optical axis of the lens 23.

[0047] Control principle:

[0048] The circuit board 1 receives an external electrical signal and transmits a control signal to the second sensor 102, thereby detecting and controlling the movement of the prism 21 and the prism carrier 22 with the y-axis as the rotation axis;

[0049] The circuit board 1 receives an external electrical signal and transmits a control signal to the third sensor 103, thereby detecting and controlling the movement of the prism 21, the prism carrier 22 and the cross adapter 8 with the z-axis as the rotation axis;

[0050] The circuit board 1 receives an external electrical signal and transmits a control signal to the first sensor 101 , thereby detecting and controlling the movement of the lens 23 and the lens carrier 24 along the optical axis of the lens 23 .

[0051] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A periscope camera driving device, characterized in that: include: A base, a carrier assembly, a driving assembly, a prism guide assembly, a lens guide assembly, a connecting piece and a circuit board; the carrier assembly is arranged in the base, and a driving assembly is arranged between the carrier assembly and the base, a circuit board is connected to the base, the circuit board is electrically connected to the driving assembly, the connecting piece is fixedly connected to the base, a prism guide assembly is arranged between the connecting piece and the carrier assembly, bosses are respectively arranged on both sides of the bottom of the base, the lens guide assembly includes a first ball and a guide rail, the guide rails are respectively fixedly connected to the top of the bosses to form a bridging structure, and the first ball is arranged at the bottom of the guide rail and the carrier assembly.

2. The periscope camera driving device according to claim 1, characterized in that: The carrier component comprises: a prism, a prism carrier, a lens and a lens carrier; the prism carrier and the lens carrier are arranged in parallel in the base, the prism is arranged in the prism carrier, and the lens is arranged in the lens carrier.

3. The periscope camera driving device according to claim 2, characterized in that: A first ball rolling groove is provided at the bottom of the lens carrier, and the first ball rolling is provided between the first ball rolling groove and the guide rail; Wherein, the number of the first ball grooves is at least three, and the number of the guide rails is two.

4. The periscope camera driving device according to claim 1, characterized in that: The guide rail is a steel sheet, and the guide rail is attracted to the driving assembly to pre-press the first ball.

5. The periscope camera driving device according to claim 2, characterized in that: Also includes: Cross The adapter member comprises a second ball and a third ball; a second ball groove a is provided on the side of the cross adapter member close to the prism carrier, a second ball groove b corresponding to the second ball groove a is provided on the prism carrier, and the second ball is arranged between the second ball groove a and the second ball groove b; a third ball groove a is provided on the side of the connecting member close to the cross adapter member, a third ball groove b corresponding to the third ball groove a is provided on the cross adapter member, and the third ball is arranged between the third ball groove a and the third ball groove b.

6. The periscope camera driving device according to claim 1, characterized in that: Also includes: An upper cover is fixedly connected to the base, and an anti-collision block is provided at the lower end of the upper cover.

7. The periscope camera driving device according to claim 2, characterized in that: The driving component includes a prism driving component and a lens driving component, the prism driving component is arranged between the base and the prism carrier, and the lens driving component is arranged between the base and the lens carrier; the lens driving component includes a first driving magnet and a first driving coil, the first driving magnet is embedded in the outer side surface of the lens carrier, and the first driving coil corresponding to the first driving magnet is arranged on the circuit board and electrically connected to the circuit board.

8. The periscope camera driving device according to claim 7, characterized in that: The prism driving assembly includes a second driving magnet, a second driving coil, a third driving magnet and a third driving coil; the second driving magnet is arranged at the bottom of the prism carrier, and the second driving coil corresponding to the second driving magnet is arranged on the circuit board and electrically connected to the circuit board; the third driving magnet is arranged on the outer side surface of the prism carrier, and the third driving coil corresponding to the third driving magnet is arranged on the circuit board and electrically connected to the circuit board.

9. The periscope camera driving device according to claim 8, characterized in that: Also includes: A closed-loop component, the closed-loop component includes a first sensor, a second sensor and a third sensor, the first sensor is arranged in the first drive coil, the first sensor is fixed on the circuit board and is electrically connected to the circuit board; the second sensor is arranged in the second drive coil, the second sensor is fixed on the circuit board and is electrically connected to the circuit board; the third sensor is arranged in the third drive coil, the third sensor is fixed on the circuit board and is electrically connected to the circuit board.

10. The periscope camera driving device according to claim 2, characterized in that: Also includes: The spring sheet is arranged between the prism carrier and the connecting member, and is fixedly connected to the prism carrier and the connecting member respectively.

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