CN220421908U - A camera driving device - Google Patents

Abstract

The utility model discloses a camera shooting driving device, comprising: the device comprises an optical element, a reed assembly, a carrier assembly, a focusing driving assembly and an anti-shake driving assembly; the carrier assembly comprises a lens carrier and a support carrier, the support carrier comprises a first support carrier and a second support carrier, the first support carrier is of a plastic injection structure, and the second support carrier is of a metal stamping structure; the reed assembly comprises an upper reed and a lower reed, wherein the upper reed comprises a plane part, a bending part and a bending connecting part; the first support carrier of the support carrier has flexibility, can solve the problem that the structure of the support carrier is easy to crack after mechanical impact of the anti-shake driving assembly, and improves the structural strength of the support carrier. The bending part of the upper reed adopts an asymmetric structure, and the damping rubber is inserted into the independent damping rubber inserting part, so that damping contact can be reduced, the stress of the whole reed is reduced, and the anti-shake effect is improved.

Description

A camera driving device

Technical field

The utility model belongs to the field of camera devices, and more specifically, relates to a camera drive device.

Background technique

Common handheld optical products currently on the market, such as digital cameras, video cameras, mobile phones and other optical systems, are composed of optical lens groups and camera drive devices. During the shooting process, it is easy to be shaken by external forces, such as hand-holding, vehicle movement, and external environmental factors that cause the device to shake, which can lead to problems such as inability to produce clear images or blurry images.

The common image compensation system for mobile phones on the market uses lens translation to compensate for the light path deviation problem. This compensation mechanism mainly relies on the elastic structure to suspend and translate the movable part to achieve light path compensation, and often uses reed bending. method, but it has the following problems: 1. If the mechanical quality factor Q value is controlled by changing the structure of the reed bending part or through the amount of damping glue, the stress of the reed bending part itself, the spring stiffness coefficient K value It will change greatly. At the same time, because the glue amount range is limited, it cannot effectively cooperate with the reed bending part, affecting the anti-shake effect; 2. The existing support carrier injection molding structure has insufficient structural strength and is generally unreliable in the industry ( Mechanical impact type) fracture problem.

Utility model content

The purpose of this utility model is to provide a camera driving device that can improve the structural strength and anti-shake effect of the camera driving device.

In order to achieve the above objectives, the technical solutions adopted by this utility model are as follows, including:

A protective shell and a base that snap together to form a cavity. The cavity is provided with an optical element, a reed assembly, and a carrier assembly; the top of the protective case is provided with a through hole, and the optical element passes through the through hole. , four corners of the base are provided with damping grooves, damping glue is stored in the damping groove, a retaining wall is provided on the side of the damping groove, and the reed assembly includes an upper reed and a lower reed;

The carrier assembly includes a lens carrier and a support carrier disposed outside the lens carrier. The support carrier includes a first support carrier and a second support carrier disposed outside the first support carrier. The first support carrier It is a plastic injection molding structure, and the second support carrier is a metal stamping structure;

The upper spring includes a flat part, a bending part, and a bending connection part connecting the flat part and the bending part; the flat part includes a lens carrier fixed end connected to the lens carrier, and a lens carrier fixed end connected to the lens carrier. The fixed end of the support carrier connected to the support carrier, and the fixed end of the base connected to the retaining wall of the base; the bending part includes a frame fixing part and a frame swing part, and is provided on the frame fixing part and the inner swing part between the frame swing part, the lower end of the frame swing part is provided with a damping glue insertion part, the inner swing part is provided with a continuously bent wire frame structure, one end of the lower part of the inner swing part Connected to the frame fixing part, the other end of the lower part of the inner swing part is connected to the frame swing part at the upper end of the damping rubber insertion part; the damping rubber insertion part is used to insert into the base of the camera drive device in the damping tank.

Preferably, it also includes a focus drive assembly and an anti-shake drive assembly, the focus drive assembly is used to drive the optical element and the lens carrier to move along the Z-axis direction, and the anti-shake drive assembly is used to drive the optical element. , the lens carrier and the support carrier move along the X and Y axis directions.

Preferably, the lower spring piece is connected to the bottom surface of the lens carrier and the bottom surface of the support carrier respectively.

Preferably, the upper spring is an integrated structure, consisting of four units connected in sequence in a circumferential direction. Each unit includes at least one fixed end of the lens carrier, at least one fixed end of the support carrier, and at least one fixed end of the support carrier. 1 fixed end of the base, the fixed end of the support carrier and the fixed end of the lens carrier in each unit are connected by a string part, and the support carrier between adjacent units The fixed end and the fixed end of the lens carrier are connected through a bending transition connection portion, and the bending portion corresponds to the position of the damping groove on the base.

Preferably, one end of the bent connection part is connected to the flat part, and the other end is connected to the upper end of the frame fixing part and the upper end of the frame swing part respectively.

Preferably, the flat portion is provided with an electrical connection end connected to a focus drive coil of the imaging drive device.

Preferably, the top surface of the lens carrier, the top surface of the support carrier, and the top surface of the base retaining wall are respectively provided with upper reed fixing posts connected to the upper reed; The bottom and the bottom of the support carrier are respectively provided with lower spring fixing posts connected to the lower spring.

Preferably, the base further includes a bottom plate, and metal reinforcements are provided in both the retaining wall and the bottom plate. The top surface of the retaining wall is provided with the exposed end of the metal reinforcement, and the upper spring leaf The exposed end is electrically connected to the metal reinforcement.

Preferably, it also includes a closed-loop component, which is disposed in the base and electrically connected to the metal reinforcement.

The beneficial effects of this utility model are:

The support carrier of the camera driving device of the present invention is composed of a first support carrier and a second support carrier. The first support carrier is arranged in the second support carrier. The first support carrier is a plastic injection molding structure, and the second support carrier is a metal stamping structure. structure, thereby solving the problem that the structure of the support carrier is easy to crack after the mechanical impact of the anti-shake movement, and improving the structural strength of the support carrier. The damping rubber insertion part of the upper reed of the utility model adopts an asymmetric structure. A single damping rubber insertion part is inserted into the damping rubber, which can reduce the damping contact and reduce the force on the overall reed, thus achieving better results. The cushioning effect improves the anti-shake effect and solves the problems of reliable reed bending and reed wire breakage.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Description of the drawings

The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings. Wherein, in the exemplary embodiments, like reference numerals generally refer to like components.

Figure 1 shows an exploded view of a camera driving device according to an embodiment of the present invention.

Figure 2 shows a schematic structural diagram of an upper reed according to an embodiment of the present invention.

Figure 3 shows the installation diagram of the upper reed according to one embodiment of the present invention.

Figure 4 shows the installation diagram of the lower spring according to one embodiment of the present invention.

Figure 5 shows a schematic structural diagram of a support carrier according to an embodiment of the present invention.

Figure 6 shows an installation diagram of the focus coil according to one embodiment of the present invention.

Figure 7 shows an installation diagram of an anti-shake coil according to an embodiment of the present invention.

Figure 8 shows a schematic structural diagram of a base according to an embodiment of the present invention.

Figure 9 shows a schematic structural diagram of a closed-loop component according to an embodiment of the present invention.

Figure 10 shows an overall structural diagram of a camera driving device according to an embodiment of the present invention (excluding the protective case).

Explanation of reference signs: 1. Protective shell; 2. Upper reed; 3. Lens carrier; 4. Support carrier; 5. Lower reed; 6. Magnet component; 7. Base; 8. Flat part; 9. Lens Carrier fixed end; 10. Support carrier fixed end; 11. Base fixed end; 12. Electrical connection end; 13. Bending connection part; 14. Bending part; 15. Frame fixed part; 16. Frame swing part; 17 , Damping rubber insertion part; 18. Inner swing part; 19. Closed loop component; 20. Exposed end; 21. Metal reinforcement; 22. Damping groove; 23. Retaining wall; 24. Bottom plate; 25. First support carrier; 26 , Upper reed fixed column; 27. Second support carrier; 28. Focus drive coil; 29. Anti-shake drive coil; 30. String wire part; 31. Bending transition connection part; 32. Reinforced connection part.

Detailed ways

Preferred embodiments of the present invention will be described in more detail below. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in Figures 1 to 10, the camera driving device according to the embodiment of the present invention includes: a protective shell 1 and a base 7 that are interlocked to form a cavity. The cavity is provided with optical elements, reed components, and carriers. assembly, focus drive assembly, anti-shake drive assembly; the top of the protective shell 1 is provided with a through hole, and the optical element passes through the through hole; the four corners of the base 7 are provided with damping grooves 22, and damping glue is stored in the damping groove 22. The damping groove 22 There is a retaining wall 23 on the side of and a second support carrier 27 arranged outside the first support carrier 25. The first support carrier 25 is a plastic injection molding structure, and the second support carrier 27 is a metal stamping structure.

As shown in Figure 2, the upper spring 2 includes a flat portion 8, a bending portion 14, and a bending connection portion 13 connecting the flat portion 8 and the bending portion 14; the flat portion 8 includes a lens carrier fixed to the lens carrier 3. end 9, the fixed end 10 of the support carrier connected to the support carrier 4, and the fixed end 11 of the base connected to the retaining wall 23 of the base 7; the bending part 14 includes a frame fixing part 15 and a frame swing part 16, and is provided on The inner swing part 18 between the frame fixed part 15 and the frame swing part 16 is provided with a damping glue insertion part 17 at the lower end of the frame swing part 16. The inner swing part 18 is provided with a continuous bending wire frame structure. One end of the lower part of the inner swing part 18 It is connected to the frame fixing part 15, and the other end of the lower part of the inner swing part 18 is connected to the frame swing part 16 at the upper end of the damping rubber insertion part 17; the damping rubber insertion part 17 is used to be inserted into the damping groove 22 on the base 7; the lower spring 5 are respectively connected to the bottom surface of the lens carrier 3 and the bottom surface of the support carrier 4. The focus drive assembly is used to drive the optical element and the lens carrier 3 to move along the Z-axis direction. The anti-shake drive assembly is used to drive the optical element, the lens carrier 3 and the support carrier. 4Move along the X and Y axis directions.

Specifically, as shown in Figure 2, the upper spring 2 includes a flat portion 8, a bending portion 14 and a bending connecting portion 13. The flat portion 8 is provided with lenses fixed to the lens carrier 3, the support carrier 4 and the blocking wall 23 respectively. The fixed end of the carrier 9, the fixed end of the support carrier 10 and the fixed end of the base 11; the frame fixed part 15 hardly moves and only serves as a connection and support. The frame swing part 16 can swing with the movement of the support carrier 4, and the frame swings The lower end of the inner swing portion 16 is provided with a damping glue insertion portion 17. The inner swing portion 18 is provided between the frame fixing portion 15 and the frame swing portion 16. The inner swing portion 18 is provided with an integrally bent wire frame structure. The lower portion of the inner swing portion 18 is One end is connected to the frame fixing part 15, and the other end of the lower part is connected to the frame swing part 16 at the upper end of the damping rubber insertion part 17. The damping rubber insertion part 17 makes the lower end of the bending part 14 form an asymmetric structure with a single claw on one side, and the inside The swinging part 18 can move with the frame swinging part 16, and the damping rubber insertion part 17 can move with the frame swinging part 16. When the driving device performs focus and translation compensation, the damping rubber can play the role of oscillation suppression, and the damping rubber insertion part 17 can It plays a buffering role and improves the anti-shake performance. When the damping rubber is irradiated, it becomes harder and the mechanical impact is similar to the reliability, which easily causes the normal reed to break. The upper reed in this embodiment is inserted with a single damping rubber insertion part 17 The damping glue reduces the stress on the upper reed 2 as a whole during mechanical impact, which solves the problem that the damping glue is hard after exposure and the reed is easy to break. If the length and thickness of the existing spring wire are adjusted, the K value stress will be very large. According to the present invention, the length and thickness of the damping rubber insertion part 17 can be adjusted to control the combination state with the damping rubber without changing the K value stress of the overall spring wire structure, while improving the anti-shake effect.

Specifically, as shown in FIG. 5 , the support carrier 4 is composed of a first support carrier 25 of a plastic injection structure and a second support carrier 27 of a metal stamping structure. The first support carrier 25 is disposed in the second support carrier 27 . The support carrier 25 has a certain degree of flexibility and mainly plays a buffering role. The second support carrier 27 has a certain rigidity and mainly plays a collision-proof role and can also increase the strength of the support carrier 4 . It can solve the problem that the structure of the support carrier 4 is easily cracked after the mechanical impact of the anti-shake drive assembly.

In this embodiment, as shown in Figures 6 and 7, the focus drive assembly includes a focus drive coil 28 and a magnet assembly 6. The outer periphery of the lens carrier 3 is provided with an annular groove for embedding the focus drive coil 28. The focus drive coil 28 is sleeved In the annular groove on the outer periphery of the lens carrier 3, the magnet assembly 6 includes two pairs of magnets that are perpendicular to each other in the horizontal plane. The inner wall of the support carrier 4 is provided with a mounting groove for inserting the magnet assembly 6. In the horizontal direction, the positions of the focus drive coil 28 and the magnet assembly 6 correspond to each other. The anti-shake drive assembly includes an anti-shake drive coil 29 and a magnet assembly 6 . The anti-shake drive coil 29 is an integrated flat coil fixed on the upper surface of the bottom plate 24 of the base 7 . In the vertical direction, the anti-shake driving coil 29 corresponds to the position of the magnet assembly 6 .

In this embodiment, as shown in Figures 2 and 8, the upper reed 2 is an integrated structure and is composed of four units connected in sequence in the circumferential direction. Each unit includes two lens carrier fixed ends 9 and four support carrier fixed ends. end 10, two base fixed ends 11, the support carrier fixed end 10 and the lens carrier fixed end 9 in each unit are connected through the string part 30, the support carrier fixed end 10 and the lens carrier between the two units The fixed ends 9 are connected by a bending transitional connection portion 31 . The bending portion 14 corresponds to the position of the damping groove 22 on the base 7 . The damping groove 22 is located at the four corners of the bottom plate of the base 7 .

In this embodiment, as shown in Figure 2, one end of the bent connection part 13 is connected to the flat part 8, and the other end is connected to the upper end of the frame fixing part 15 and the upper end of the frame swing part 16 respectively to support The carrier fixed end 10 and the base fixed end 11 are connected through a reinforced connection part 32 to form an integrated structure, thereby improving the overall strength of the bending part.

In this embodiment, as shown in FIGS. 2 and 6 , the fixed end 9 of the lens carrier is provided with an electrical connection end 12 for electrical connection with the focus drive coil 28 .

In this embodiment, as shown in Figures 3 and 4, the top surface of the lens carrier 3, the top surface of the support carrier 4, and the top surface of the retaining wall 23 are respectively provided with upper reed fixing posts 26 connected to the upper reed 2. ; The bottom of the lens carrier 3 and the bottom of the support carrier 4 are respectively provided with lower reed fixing posts connected to the lower reed 5.

Specifically, the upper reed 2 is connected to the lens carrier fixed end 9, the support carrier fixed end 10, and the base fixed end 11 respectively through the upper reed fixing post 26, so that the upper reed 2 is respectively connected to the top surface of the lens carrier 3 and the base fixed end 11. The top surface of the support carrier 4 and the top surface of the retaining wall 23 are fixed. The lower reed 5 is respectively connected to the lower fixed end of the lens carrier and the lower fixed end of the carrier assembly through the lower reed fixing post, so that the lower reed 5 is fixed to the bottom of the lens carrier 3 and the bottom of the support carrier 4 respectively.

In this embodiment, as shown in Figure 8, the base 7 also includes a bottom plate 24. Metal reinforcements 21 are provided in both the retaining wall 23 and the bottom plate 24. The exposed end 20 of the metal reinforcement 21 is provided on the top surface of the retaining wall 23. , the upper reed 2 is electrically connected to the metal reinforcement 21 through the exposed end 20 .

In this embodiment, as shown in Figure 9, the camera driving device also includes a closed-loop component 19. The closed-loop component 19 is disposed in the base 7 and is electrically connected to the metal reinforcement 21. The closed-loop component 19 includes an anti-shake displacement sensor and a focus displacement sensor. Sensor is used to sense, feedback and adjust the focus movement and anti-shake movement of the optical element. During operation, the external power supply transmits the electrical signal to the metal reinforcement 21, and the electrical signal is transmitted to the closed-loop component 19 through the metal reinforcement 21 in the base plate 24. After the closed-loop component 19 is powered on, it can detect and feedback the optical element, the lens carrier 3 and the support carrier. 4. Movement conditions along the three directions of X, Y, and Z to control and realize closed-loop control function.

The working principle of the camera driving device of this embodiment: the external power supply transmits the electrical signal to the metal reinforcement 21, and the electrical signal is transmitted to the focus drive coil 28 through the exposed end 20, the bent part 14, the flat part 8, and the electrical connection end respectively. When the focus drive coil 28 is energized, it interacts with the magnet assembly 6 to generate a Lorentz force, thereby driving the optical element and the lens carrier 3 to focus movement in the Z direction.

The external power supply transmits the electrical signal to the metal reinforcement 21, and the electrical signal is transmitted to the anti-shake drive coil 29 through the metal reinforcement 21 in the base bottom plate. When the anti-shake drive coil 29 is energized, it interacts with the magnet assembly 6 to generate Lorentz. This force drives the optical element, the lens carrier 3 and the support carrier 4 to jointly perform anti-shake motion in the X and Y directions.

The embodiments of the present invention have been described above. The above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the illustrated embodiments.

Claims (9)

1. An image pickup drive apparatus comprising: a protective shell (1) and a base (7) which are mutually buckled to form a cavity, wherein an optical element, a reed component and a carrier component are arranged in the cavity;

the protection shell (1) top is equipped with the through-hole, optical element passes the through-hole, the four corners of base (7) is equipped with damping groove (22), the damping glue has been stored in damping groove (22), the side of damping groove (22) is equipped with barricade (23), the reed subassembly includes reed (2) and lower reed (5), its characterized in that:

the carrier assembly comprises a lens carrier (3) and a support carrier (4) arranged on the outer side of the lens carrier (3), the support carrier (4) comprises a first support carrier (25) and a second support carrier (27) arranged on the outer side of the first support carrier (25), the first support carrier (25) is of a plastic injection structure, and the second support carrier (27) is of a metal stamping structure;

the upper reed (2) comprises a plane part (8), a bending part (14) and a bending connecting part (13) for connecting the plane part (8) and the bending part (14); the plane part (8) comprises a lens carrier fixed end (9) connected with the lens carrier (3), a support carrier fixed end (10) connected with the support carrier (4), and a base fixed end (11) connected with the retaining wall (23);

the bending part (14) comprises a frame fixing part (15) and a frame swinging part (16), and an inner swinging part (18) arranged between the frame fixing part (15) and the frame swinging part (16), wherein a damping glue inserting part (17) is arranged at the lower end of the frame swinging part (16), a continuously bent wire frame structure is arranged at the inner swinging part (18), one end of the lower part of the inner swinging part (18) is connected with the frame fixing part (15), and the other end of the lower part of the inner swinging part (18) is connected with the frame swinging part (16) at the upper end of the damping glue inserting part (17); the damping gel insertion part (17) is used for being inserted into a damping groove (22) on the base (7).

2. The image pickup drive apparatus according to claim 1, further comprising a focus drive assembly for driving the optical element and the lens carrier (3) to move in a Z-axis direction, and an anti-shake drive assembly for driving the optical element, the lens carrier (3), and the support carrier (4) to move in a X, Y-axis direction.

3. The imaging driving device according to claim 1, wherein the lower reed (5) is connected to a bottom surface of the lens carrier (3) and a bottom surface of the support carrier (4), respectively.

4. The image pickup driving device according to claim 1, wherein the upper reed (2) is of an integral structure and is composed of four units which are sequentially connected in the circumferential direction, each unit comprises at least 1 lens carrier fixing end (9), at least 1 support carrier fixing end (10) and at least 1 base fixing end (11), the support carrier fixing ends (10) and the lens carrier fixing ends (9) in each unit are connected through string wire parts (30), the support carrier fixing ends (10) and the lens carrier fixing ends (9) between adjacent units are connected through bending transition connecting parts (31), and the bending parts (14) correspond to positions of damping grooves (22) on the base (7).

5. The imaging driving device according to claim 4, wherein one end of the bending connection portion (13) is connected to the planar portion (8), and the other end is connected to an upper end of the frame fixing portion (15) and an upper end of the frame swinging portion (16), respectively.

6. The imaging driving device according to claim 1, wherein the planar portion (8) is provided with an electrical connection terminal (12) connected to a focus driving coil (28) of the imaging driving device.

7. The image pickup drive apparatus according to claim 1, wherein a top surface of the lens carrier (3), a top surface of the support carrier (4), and a top surface of the retaining wall (23) are respectively provided with an upper reed fixing column (26) connected with the upper reed (2); the bottom of the lens carrier (3) and the bottom of the support carrier (4) are respectively provided with a lower reed fixing column connected with the lower reed.

8. The camera driving device according to claim 1, wherein the base (7) further comprises a bottom plate (24), metal reinforcements (21) are arranged in the retaining wall (23) and the bottom plate (24), the top surface of the retaining wall (23) is provided with exposed ends (20) of the metal reinforcements (21), and the upper reed (2) is electrically connected with the metal reinforcements (21) through the exposed ends (20).

9. The camera driving device according to claim 8, further comprising a closed loop assembly (19), the closed loop assembly (19) being disposed within the base (7) and being electrically connected to the metal stiffener (21).