Imaging drive device

Abstract

The utility model provides a camera shooting driving device, and relates to the technical field of optical element driving. The camera shooting driving device comprises an elastic piece, a movable part, a fixed part, a guide assembly, a driving assembly and an electric connecting piece. The elastic part is connected with the fixed part and the movable part, the movable part is movably arranged on the fixed part, the guide assembly is arranged between the movable part and the fixed part, the driving assembly is arranged on the movable part and the fixed part, and the electric connecting piece is arranged on the fixed part and electrically connected with the driving assembly; a guide groove with a hole digging groove is formed in the bottom of the movable part, the guide assembly is a ball group, and the ball group is arranged in the hole digging groove. According to the technical scheme, the problems that in the prior art, a guide structure for movement in the automatic focusing direction usually adopts a sliding friction mode, large friction force is often generated in the application process, large driving force is needed in the movement process, a certain risk of movement imbalance exists, and the movement accuracy is poor can be solved. And the requirement on assembly precision is relatively high.

Description

Technical Field

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

[0002] In recent years, optical imaging technology has been widely used in camera modules in electronic devices (information devices) such as smartphones. Some electronic devices with camera or video capabilities often include optical element drivers to drive optical components such as lenses, thereby achieving autofocus. As demand for image quality continues to rise, the driving function of lens modules (optical elements) is becoming increasingly important.

[0003] In the existing technology, the guide structure for autofocus direction movement usually adopts the form of sliding friction, such as ball bearings, guide rods, etc. In actual application, this type of single-point guide structure often has a large friction force, requires a larger driving force during movement, and there is a certain risk of imbalance in movement, and the assembly precision requirements are also relatively high. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a camera drive device to solve the problems in the prior art that the guide structure for movement in the autofocus direction usually adopts the form of sliding friction, often has a large friction force during application, requires a larger driving force during movement, and there is a certain risk of unbalanced movement, and the assembly accuracy requirements are also relatively high.

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

[0006] The present application provides a camera drive device, comprising: an elastic member, a movable portion, a fixed portion, a guide assembly, a drive assembly, and an electrical connector; the elastic member is connected to the fixed portion and the movable portion; the movable portion is movably disposed on the fixed portion; the guide assembly is disposed between the movable portion and the fixed portion; the drive assembly is disposed on the movable portion and the fixed portion; and the electrical connector is disposed on the fixed portion and electrically connected to the drive assembly.

[0007] A guide groove with a hole groove is provided at the bottom of the movable part, and the guide component is a ball group, and the ball group is arranged in the hole groove.

[0008] In some modified embodiments of the present application, the guide assembly includes a first guide member and a second guide member, the bottom of the movable portion is provided with a first guide groove and a second guide groove with a hole groove, the first guide member is laid flat in the hole groove of the first guide groove, and the second guide member is laid flat in the hole groove of the second guide groove;

[0009] In some modified embodiments of the present application, the cross-section of the first guide groove is a plane, the cross-section of the second guide groove is U-shaped, the first guide member is a group of ball groups, and the second guide member is two groups of ball groups.

[0010] In some modified embodiments of the present application, the elastomer includes a connecting portion, a bending portion and a string portion, the bending portion is connected to the connecting portion and the string portion respectively, the connecting portion includes a fixed portion connecting end and a movable portion connecting end, the fixed portion connecting end is connected to the fixed portion, and the movable portion connecting end is connected to the movable portion.

[0011] In some modified embodiments of the present application, the bending portion is an arc-shaped structure, and the string portion is a serpentine string structure.

[0012] In some modified embodiments of the present application, it also includes: a magnetic sheet, which is arranged on the fixed part, and a metal reinforcement is provided in the movable part. The magnetic sheet and the metal reinforcement are attracted to each other to pre-press the guide assembly.

[0013] In some modified embodiments of the present application, the movable portion includes a carrier and an optical element, the optical element is provided on the carrier, and the carrier is embedded in the fixed portion.

[0014] In some modified embodiments of the present application, the driving assembly includes a driving magnet and a driving coil, the driving magnet is provided on the movable part, and the driving coil is provided on the fixed part and is arranged corresponding to the driving magnet.

[0015] In some modified implementations of the present application, it further includes: a closed-loop controller, which is provided on the electrical connector and electrically connected to the electrical connector.

[0016] In some modified implementations of the present application, it further includes: a protective shell, which is buckled onto the fixing portion to form a receiving space.

[0017] Compared with the existing technology, the camera drive device provided in this application has a guide assembly configured as a ball group, using a multi-ball structure as the guide assembly, and the guide assembly is laid flat in a special structural groove of a guide groove with a hole groove, thereby achieving the effect of reducing friction, and using a fixed part as a slideway of the guide assembly to form a buckle to prevent the guide assembly from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. 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 diagram of the camera driving device in the present invention is schematically shown;

[0020] Figure 2 The structure diagram of the camera driving device without a protective cover in the present invention is schematically shown;

[0021] Figure 3 The schematic diagram of the structure of the elastic body in the present invention is shown schematically;

[0022] Figure 4 A bottom view schematically shows the connection between the movable portion and the guide assembly in the present invention;

[0023] Figure 5 A cross-sectional view of the fixing portion of the present invention is schematically shown;

[0024] Figure 6 The schematic diagram of the structure of the connection between the fixed part, the driving coil, the electrical connector and the closed-loop controller in the present invention is shown schematically;

[0025] Figure 7 Schematically shows a top view of the connection between the connecting part, the movable part and the fixed part in the utility model;

[0026] Figure 8 The schematic diagram of the structure of the connection between the carrier and the driving magnet in the utility model is shown schematically;

[0027] Figure 9 The bottom view of the carrier in the present invention is schematically shown.

[0028] Description of Figure Numbers:

[0029] 1. Elastomer; 11. Connecting part; 111. Connecting end of fixed part; 112. Connecting end of movable part; 12. Bending part; 13. String part; 2. Movable part; 21. Optical element; 22. Carrier; 3. Fixed part; 31. First guide groove; 32. Second guide groove; 4. Guide assembly; 41. First guide member; 42. Second guide member; 5. Driving assembly; 51. Driving magnet; 52. Driving coil; 6. Electrical connector; 7. Closed-loop controller; 8. Protective shell. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although 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. Rather, these embodiments are provided 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.

[0031] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this application belongs. Example

[0032] like Figures 1 to 9 As shown, this embodiment provides a camera driving device, including: an elastic member 1, a movable portion 2, a fixed portion 3, a guide assembly 4, a driving assembly 5, an electrical connector 6, a closed-loop controller 7 and a protective shell 8; the protective shell 8 is buckled on the fixed portion 3 to form a storage space for accommodating other components, the elastic portion 1 is connected to the fixed portion 3 and the movable portion 2, the movable portion 2 is movably arranged on the fixed portion 3, the guide assembly 4 is arranged between the movable portion 2 and the fixed portion 3, the driving assembly 5 is arranged between the movable portion 2 and the fixed portion 3, the electrical connector 6 is arranged on the fixed portion 3 and is electrically connected to the driving assembly 5, and the closed-loop controller 7 is arranged on the electrical connector 6 and is electrically connected to the electrical connector 6;

[0033] A guide groove with a hole groove is provided at the bottom of the movable part 2, and the guide component 4 is a ball group, which is flatly laid in the hole groove; wherein, the number of elastic members 1 is preferably four, which are respectively provided at the four corners of the movable part 2 and the fixed part 3.

[0034] This application uses a multi-ball structure such as a ball group as a fulcrum, adopts a special structural groove with a guide groove with a hole groove, carries a guide component 4, reduces friction, uses the fixed part 3 as a slideway for the guide component 4, forms a buckle form, and prevents the guide component 4 from falling.

[0035] like Figure 1 、 Figure 4 As shown, in a specific implementation, the guide assembly 4 includes a first guide member 41 and a second guide member 42, and the bottom of the movable part 2 is provided with a first guide groove 31 and a second guide groove 32 with a hole groove, the first guide member 41 is laid flat in the hole groove of the first guide groove 31, and the second guide member 42 is laid flat in the hole groove of the second guide groove 32; wherein, the cross-section of the first guide groove 31 is a plane, and the cross-section of the second guide groove 32 is U-shaped, the first guide member 41 is a group of ball groups, and the second guide member 42 is two groups of ball groups, and a total of three groups of ball groups are used, so that the guide structure is more stable; a U-shaped hole groove is provided in the second guide groove 32, and the second guide member 42 is laid flat along the U-shaped hole groove.

[0036] like Figures 1 to 3 As shown, in a specific implementation, the elastomer 1 includes a connecting portion 11, a bending portion 12 and a string portion 13, the bending portion 12 is connected to the connecting portion 11 and the string portion 13 respectively, the connecting portion 11 includes a fixed portion connecting end 111 and a movable portion connecting end 112, the fixed portion connecting end 111 is connected to the fixed portion 3, and the movable portion connecting end 112 is connected to the movable portion 12; wherein, the bending portion 12 is an arc-shaped structure, and the string portion 13 is a serpentine string structure.

[0037] In a specific implementation, a magnetic sheet is added and arranged on the fixed part 3 , and a metal reinforcement is provided in the movable part 2 . The magnetic sheet and the metal reinforcement attract each other to enhance the pre-compression of the guide assembly 4 .

[0038] By using the magnetic sheet and the elastic member 1 for pre-compression, the stress value of the elastic member 1 in the moving direction is small, and the stress value in the non-moving direction is large, which effectively improves the problem of motion imbalance in various postures caused by the critical magnetic attraction force in the existing technology.

[0039] like Figure 1 、 Figure 2 As shown, in a specific implementation, the movable portion 2 includes a carrier 22 and an optical element 21 . The optical element 21 is disposed on the carrier 22 , and the carrier 22 is embedded in the fixed portion 3 .

[0040] like Figure 1 、 Figure 6 、 Figure 8 As shown, in a specific implementation, the driving component 5 includes a driving magnet 51 and a driving coil 52. The driving magnet 51 is arranged on the side wall of the carrier 22 of the movable part 2, and the driving coil 52 is arranged on the electrical connector 6 and passes through the groove of the fixed part 3, and is arranged corresponding to the driving magnet 51.

[0041] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A camera driving device, characterized in that: include: An elastic member, a movable portion, a fixed portion, a guide assembly, a drive assembly, and an electrical connector; the elastic member is connected to the fixed portion and the movable portion, the movable portion is movably disposed on the fixed portion, the guide assembly is disposed between the movable portion and the fixed portion, the drive assembly is disposed on the movable portion and the fixed portion, and the electrical connector is disposed on the fixed portion and electrically connected to the drive assembly; A guide groove with a hole groove is provided at the bottom of the movable part, and the guide component is a ball group, and the ball group is arranged in the hole groove.

2. The imaging driving device according to claim 1, wherein The guide assembly includes a first guide member and a second guide member. The bottom of the movable part is provided with a first guide groove and a second guide groove with a hole groove. The first guide member is laid flat in the hole groove of the first guide groove, and the second guide member is laid flat in the hole groove of the second guide groove.

3. The imaging driving device according to claim 2, wherein: The cross section of the first guide groove is a plane, the cross section of the second guide groove is U-shaped, the first guide member is a group of ball groups, and the second guide member is two groups of ball groups.

4. The imaging driving device according to claim 1, wherein The elastic member includes a connecting portion, a bending portion and a string portion, the bending portion is connected to the connecting portion and the string portion respectively, the connecting portion includes a fixed portion connecting end and a movable portion connecting end, the fixed portion connecting end is connected to the fixed portion, and the movable portion connecting end is connected to the movable portion.

5. The imaging driving device according to claim 4, wherein The bending portion is an arc-shaped structure, and the string portion is a snake-shaped string structure.

6. The imaging driving device according to claim 1, wherein Also includes: A magnetic sheet is provided on the fixed portion, a metal reinforcement is provided in the movable portion, and the magnetic sheet and the metal reinforcement are attracted to each other to pre-press the guide assembly.

7. The imaging driving device according to claim 1, wherein The movable part includes a carrier and an optical element. The optical element is arranged on the carrier, and the carrier is embedded in the fixed part.

8. The imaging driving device according to claim 1, wherein The driving assembly includes a driving magnet and a driving coil. The driving magnet is arranged on the movable part, and the driving coil is arranged on the fixed part and corresponds to the driving magnet.

9. The imaging driving device according to claim 1, wherein Also includes: A closed-loop controller is provided on the electrical connector and is electrically connected to the electrical connector.

10. The imaging driving device according to claim 1, wherein Also includes: A protective shell is buckled on the fixing portion to form an accommodating space.

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