Lens driving device

Abstract

The invention belongs to the technical field of optical imaging equipment, and particularly relates to a lens driving device, which comprises a fixed shell; a first driving mechanism is arranged between the adapter shell and the fixed shell, and the adapter shell can rotate around a first direction relative to the fixed shell under the driving of the first driving mechanism; a second driving mechanism is arranged between the movable shell and the switching shell, and the movable shell can rotate around a second direction relative to the switching shell under the driving of the second driving mechanism; the movable shell is used for installing a lens motor module, and the lens motor module can rotate around a first direction and a second direction relative to the fixed shell under the driving of the first driving mechanism and the second driving mechanism. According to the invention, the rotation action of the lens motor module in the first direction and the second direction is realized through the first driving mechanism and the second driving mechanism, and when the lens motor module shakes, the anti-shaking effect of the lens motor module is realized by controlling the reverse action of the lens motor module.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of optical image equipment, and particularly relates to a lens driving device. BACKGROUND

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) nowadays have the functions of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and is developing towards the direction of convenience and thinness, so as to provide users with more choices.

[0003] Some electronic devices with the functions of taking pictures or recording videos are provided with lens driving devices to drive the movement of lens motors, so as to achieve the function of optical image stabilization. In the prior art, the function of optical image stabilization is usually achieved by moving the moving part on which the lens motor is installed.

[0004] Therefore, a moving mechanism capable of achieving stable and reliable movement of the moving part is actively considered by those skilled in the art. SUMMARY

[0005] The present application aims at the above technical problems, and aims to provide a lens driving device.

[0006] A lens driving device, the lens driving device comprising:

[0007] a fixed housing;

[0008] an adapter housing, a first driving mechanism being arranged between the fixed housing and the adapter housing, under the driving of the first driving mechanism, the adapter housing is rotatable relative to the fixed housing in a first direction;

[0009] a movable housing, a second driving mechanism being arranged between the adapter housing and the movable housing, under the driving of the second driving mechanism, the movable housing is rotatable relative to the adapter housing in a second direction, the second direction intersecting the first direction;

[0010] a lens motor module being installed in the movable housing, so that under the driving of the first driving mechanism and the second driving mechanism, the lens motor module is rotatable relative to the fixed housing in the first direction and the second direction.

[0011] Optionally, the first driving mechanism comprises:

[0012] a transmission shaft, the transmission shaft being fixedly connected to the fixed housing, one end of the transmission shaft being rotatably connected to the adapter housing.

[0013] Optionally, the first driving mechanism further comprises:

[0014] A first drive motor is installed inside the adapter housing;

[0015] The first active bevel gear is connected to the output shaft of the first drive motor;

[0016] The first driven bevel gear is fixedly sleeved on the transmission shaft. The first driven bevel gear meshes with the first driving bevel gear. The rotation of the first drive motor drives the first driving bevel gear to rotate around the first driven bevel gear, thereby causing the first drive motor, the adapter housing, the movable housing connected to the adapter housing, and the lens motor module installed in the movable housing to rotate around the first direction.

[0017] Optionally, the second drive mechanism includes:

[0018] A connecting shaft is fixedly connected to the movable housing, and one end of the connecting shaft is rotatably connected to the adapter housing.

[0019] Optionally, the second drive mechanism further includes:

[0020] A second drive motor is installed inside the adapter housing;

[0021] The second active bevel gear is connected to the output shaft of the second drive motor;

[0022] The second driven bevel gear is fixedly sleeved on the connecting shaft. The second driven bevel gear meshes with the second driving bevel gear. The rotation of the second drive motor drives the second driving bevel gear to rotate. The second driving bevel gear drives the second driven bevel gear and the connecting shaft to rotate, thereby causing the movable housing and the lens motor module installed in the movable housing to rotate around the second direction.

[0023] Optionally, both the second driving bevel gear and the second driven bevel gear are located inside the adapter housing, and the connecting shaft extends into the adapter housing and is fixedly connected to the second driven bevel gear.

[0024] Optionally, a connecting post is provided on the movable housing, and a connecting shaft is provided at one end of the connecting post.

[0025] Optionally, the connecting column is provided with connecting shafts at both ends, one of the connecting shafts extends into the adapter housing and is fixedly connected to the second driven bevel gear in the adapter housing, and the other connecting shaft is connected to the connecting lug pin, and the connecting lug is provided on the outer wall of the adapter housing.

[0026] Optionally, the movable housing, the connecting column, and the connecting shaft are integrally formed.

[0027] Optionally, the fixed housing is located below the movable housing and the transition housing. The fixed housing has a cuboid-like structure, the movable housing has a cross-section of an inverted L-shape, and the transition housing has a cross-section of an L-shape. The movable housing and the transition housing form a cuboid-like structure.

[0028] Beneficial effects: The present invention has at least one or more of the following advantages:

[0029] 1. The present invention realizes the rotation of the lens motor module around the first direction and the second direction by organically combining the first driving mechanism and the second driving mechanism. When the lens motor module shakes, the shaking stabilization effect of the lens motor module is achieved by controlling the reverse action of the lens motor module.

[0030] 2. The present invention adopts a motor drive method, which can provide the lens motor module with greater output torque and a larger rotation angle. At the same time, it is more stable and reliable during driving, and has a fast response speed, which greatly improves the timeliness, accuracy and stability of image stabilization.

[0031] 3. The present invention achieves power steering of the drive motor through a bevel gear. The bevel gear design saves more space in the installation position of the drive motor, and it can also control the rotation of the lens motor module around the first direction and the second direction, thus achieving the effect of anti-shaking of the lens motor module. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of one structure of the present invention;

[0033] Figure 2 for Figure 1 Partial structural diagram;

[0034] Figure 3 for Figure 2 A partial structural diagram. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0036] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0037] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0038] In the following description, in order to clearly demonstrate the structure and operation of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0039] Reference Figures 1 to 3 This invention provides a lens driving device, which includes a fixed housing 10, an adapter housing 20, a movable housing 30, a first driving mechanism 40, and a second driving mechanism 50.

[0040] A first driving mechanism 40 is provided between the fixed housing 10 and the adapter housing 20. Under the drive of the first driving mechanism 40, the adapter housing 20 can rotate about a first direction relative to the fixed housing 10.

[0041] A second drive mechanism 50 is provided between the adapter housing 20 and the movable housing 30. Under the drive of the second drive mechanism 50, the movable housing 30 can rotate about a second direction relative to the adapter housing 20. The second direction intersects with the first direction.

[0042] The movable housing 30 is used to install the lens motor module, allowing the lens motor module to rotate relative to the fixed housing 10 in a first direction and a second direction under the drive of the first drive mechanism 40 and the second drive mechanism 50. Therefore, when the lens motor module shakes, the reverse action of the lens motor module is controlled by driving the first drive mechanism 40 and the second drive mechanism 50 to achieve the shake stabilization effect of the lens motor module.

[0043] Preferably, the first direction is perpendicular to the second direction. Therefore, in this invention, the first direction can be set as the X-axis direction and the second direction as the Y-axis direction. In this case, the invention realizes the rotation of the lens motor module around the X-axis direction and the Y-axis direction.

[0044] In one embodiment, the first drive mechanism 40 includes a drive shaft 41, the axial direction of the drive shaft 41 is a first direction, the drive shaft 41 is fixedly connected to the fixed housing 10, and one end of the drive shaft 41 is rotatably connected to the adapter housing 20.

[0045] In one embodiment, the first drive mechanism 40 further includes a first drive motor 42, a first driving bevel gear 43, and a first driven bevel gear 44.

[0046] The first drive motor 42 is installed inside the adapter housing 20. The first driving bevel gear 43 is connected to the output shaft of the first drive motor 42. The first driven bevel gear 44 is fixedly sleeved on the transmission shaft 41, and the first driven bevel gear 44 meshes with the first driving bevel gear 43.

[0047] When the first drive motor 42 drives the first active bevel gear 43 to rotate, the first active bevel gear 43 rotates around the first driven bevel gear 44, thereby causing the first drive motor 42, the adapter housing 20, the movable housing 30 connected to the adapter housing 20, and the lens motor module installed in the movable housing 30 to rotate together around the transmission shaft 41, achieving the effect of rotating around the first direction.

[0048] In one embodiment, the second drive mechanism 50 includes a connecting shaft 51, the axial direction of the connecting shaft 51 is a second direction, the connecting shaft 51 is fixedly connected to the movable housing 30, and one end of the connecting shaft 51 is rotatably connected to the adapter housing 20.

[0049] In one embodiment, the second drive mechanism 50 further includes a second drive motor 52, a second driving bevel gear 53, and a second driven bevel gear 54.

[0050] The second drive motor 52 is installed inside the adapter housing 20. The second driving bevel gear 53 is connected to the output shaft of the second drive motor 52. The second driven bevel gear 54 is fixedly sleeved on the connecting shaft 51, and the second driven bevel gear 54 meshes with the second driving bevel gear 53.

[0051] When the second drive motor 52 drives the second active bevel gear 53 to rotate, the second active bevel gear 53 drives the second driven bevel gear 54 and the connecting shaft 51 to rotate, thereby causing the movable housing 30 and the lens motor module installed in the movable housing 30 to rotate together around the connecting shaft 51, realizing rotation around the second direction.

[0052] In one embodiment, the second driving bevel gear 53 and the second driven bevel gear 54 are both located inside the adapter housing 20, and the connecting shaft 51 extends into the adapter housing 20 and is fixedly connected to the second driven bevel gear 54.

[0053] In one embodiment, a connecting post 31 is provided on the movable housing 30, and a connecting shaft 51 is provided at one end of the connecting post 31.

[0054] In one embodiment, connecting shafts 51 are respectively provided at both ends of the connecting post 31. One connecting shaft 51 extends into the adapter housing 20 and is fixedly connected to the second driven bevel gear 54 inside the adapter housing 20. The other connecting shaft 51 is connected to the connecting lug 21 pin. The connecting lug 21 is provided on the outer wall of the adapter housing 20.

[0055] In a specific implementation, two connecting ears 21 can be arranged side by side on the outer wall of the adapter housing 20 along the axial direction of the connecting shaft 51. One of the connecting shafts 51 passes through the corresponding connecting ear 21 and extends into the adapter housing 20 and is fixedly connected to the second driven bevel gear 54 inside the adapter housing 20. The other connecting shaft 51 is pin-connected to the corresponding other connecting ear 21.

[0056] In one embodiment, the movable housing 30, the connecting post 31, and the connecting shaft 51 are integrally formed.

[0057] In one embodiment, the fixed housing 10 is located below the movable housing 30 and the transition housing 20. The fixed housing 10 has a cuboid-like structure, the movable housing 30 has a cross-section of an inverted L-shape, and the transition housing 20 has a cross-section of an L-shape. The movable housing 30 and the transition housing 20 are spliced ​​together to form a cuboid-like structure.

[0058] When the movable housing 30 is provided with a connecting post 31 and a connecting shaft 51, the connecting post 31 and the connecting shaft 51 are located in the recess of the L-shaped movable housing 30.

[0059] In one embodiment, the lens motor module includes at least one lens motor 60, which is mounted within the movable housing 30.

[0060] When the lens motor module has multiple lens motors 60, the multiple lens motors 60 are distributed independently within the movable housing 30.

[0061] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A lens driving device, characterized in that, The lens driving device includes: Fixed housing; A transition housing is provided with a first driving mechanism between the transition housing and the fixed housing. Under the drive of the first driving mechanism, the transition housing can rotate about a first direction relative to the fixed housing. A movable housing is provided with a second driving mechanism between the movable housing and the connecting housing. Under the drive of the second driving mechanism, the movable housing can rotate about a second direction relative to the connecting housing, and the second direction intersects with the first direction. The movable housing is used to install the lens motor module, so that the lens motor module can rotate relative to the fixed housing in a first direction and a second direction under the drive of the first drive mechanism and the second drive mechanism.

2. The lens driving device as described in claim 1, characterized in that, The first driving mechanism includes: A drive shaft is fixedly connected to the fixed housing, and one end of the drive shaft is rotatably connected to the adapter housing.

3. The lens driving device as described in claim 2, characterized in that, The first drive mechanism further includes: A first drive motor is installed inside the adapter housing; The first active bevel gear is connected to the output shaft of the first drive motor; The first driven bevel gear is fixedly sleeved on the transmission shaft. The first driven bevel gear meshes with the first driving bevel gear. The rotation of the first drive motor drives the first driving bevel gear to rotate around the first driven bevel gear, thereby causing the first drive motor, the adapter housing, the movable housing connected to the adapter housing, and the lens motor module installed in the movable housing to rotate around the first direction.

4. The lens driving device according to any one of claims 1 to 3, characterized in that, The second drive mechanism includes: A connecting shaft is fixedly connected to the movable housing, and one end of the connecting shaft is rotatably connected to the adapter housing.

5. The lens driving device as described in claim 4, characterized in that, The second drive mechanism also includes: A second drive motor is installed inside the adapter housing; The second active bevel gear is connected to the output shaft of the second drive motor; The second driven bevel gear is fixedly sleeved on the connecting shaft. The second driven bevel gear meshes with the second driving bevel gear. The rotation of the second drive motor drives the second driving bevel gear to rotate. The second driving bevel gear drives the second driven bevel gear and the connecting shaft to rotate, thereby causing the movable housing and the lens motor module installed in the movable housing to rotate around the second direction.

6. The lens driving device as described in claim 5, characterized in that, The second driving bevel gear and the second driven bevel gear are both located inside the adapter housing, and the connecting shaft extends into the adapter housing and is fixedly connected to the second driven bevel gear.

7. The lens driving device as described in claim 5, characterized in that, The movable housing is provided with a connecting post, and one end of the connecting post is provided with the connecting shaft.

8. The lens driving device as described in claim 7, characterized in that, The connecting column is provided with connecting shafts at both ends. One of the connecting shafts extends into the adapter housing and is fixedly connected to the second driven bevel gear inside the adapter housing. The other connecting shaft is connected to the connecting lug pin. The connecting lug is provided on the outer wall of the adapter housing.

9. The lens driving device as described in claim 8, characterized in that, The movable housing, the connecting column, and the connecting shaft are integrally formed.

10. The lens driving device as claimed in claim 1, characterized in that, The fixed housing is located below the movable housing and the connecting housing. The fixed housing has a cuboid-like structure, the movable housing has a cross-section of an inverted L-shape, and the connecting housing has a cross-section of an L-shape. The movable housing and the connecting housing together form a cuboid-like structure.

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