CN218767526U - Novel focusing actuator device - Google Patents

Abstract

The utility model relates to a camera technical field discloses a novel executor of focusing device, including the first lens group, casing, second lens group, power structure and the circuit board of arranging in proper order, power structure drives second lens group and removes, and second lens group is single lens, and power structure includes carrier and magnet group, and the both ends of carrier are equipped with the coil and relative with magnet group, still include hall location group, and hall location group includes hall magnet and the drive chip who has integrateed hall chip, and hall magnet fixes on the carrier, and drive chip is connected with circuit board and coil electricity respectively.

Description

Novel focusing actuator device

Technical Field

The utility model relates to a camera technical field, concretely relates to novel executor of focusing device.

Background

The camera module is an indispensable device in the current smart machine, and the automatic focusing device is the common function that the camera module possesses, and it is mainly through changing the distance between camera lens and the interior image sensor of camera module to realize auto focus.

The auto-focusing device is widely applied to the mobile phone, the volume of the auto-focusing device is smaller and smaller along with the gradual compactness of the structure of the mobile phone, and along with the development of the photography technology in recent years, the volume of a camera module in the electronic equipment is gradually increased, the performance is gradually improved, and the phenomenon that a camera of the mobile phone protrudes out of a body is more common; meanwhile, the weight of the lens is also increased, and the common motor is difficult to support the lens with corresponding weight and the displacement thereof, so that a focusing actuator device with smaller volume and light weight and good focusing performance is necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel executor of focusing device to a focusing device that small, the precision of focusing is high is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a novel executor of focusing device, including the first lens group that arranges in proper order, a housing, second lens group, power structure and circuit board, power structure drives second lens group and removes, and second lens group is single lens, and power structure includes carrier and magnet group, and the both ends of carrier are equipped with the coil and relative with magnet group, still includes hall location group, and hall location group includes hall magnetite and the driver chip who has integrateed hall chip, and hall magnetite fixes on the carrier, and driver chip is connected with circuit board and coil electricity respectively.

The beneficial effect of this scheme does:

1. the device volume can be reduced. Second lens group is single lens among this technical scheme, and during focusing, first lens group is motionless, and the carrier only drives second lens group and removes, has reduced the removal space that the lens removed the reservation, and single lens quality is little simultaneously, has reduced the driven degree of difficulty, and because the removal stroke of carrier is little again, has further promoted the speed of focusing.

2. Can realize quick accurate focusing. The driving chip is respectively electrically connected with the circuit board and the coil, when the circuit board is powered on, current passes through the coil, the driving chip controls the current of the corresponding coil, the coil and the magnet group generate electromagnetic induction to enable the carrier to move through changing the current size and direction of the coil, and the carrier moves and simultaneously drives the second lens group to move, so that the second lens group is adjusted to a proper position to shoot a clear image. Through having set up hall magnetite and the driver chip who has integrateed the hall chip, can take notes the signal state of auto focus and anti-shake at any time, through calculating the magnetic flux, can be fast, accurate adjust the position of focusing state and anti-shake to realize more accurate focusing effect.

Preferably, as an improvement, the carrier is provided with wrapping posts on both sides, the coil is wound on the wrapping posts, the carrier is provided with connecting grooves near the wrapping posts, and the tail ends of the connecting grooves are provided with fixing posts. The side winding is arranged, so that the damage and deformation of the carrier can be reduced, the risk of damage and deformation of the carrier and inclination in use exist in the traditional front winding, the assembly precision requirement of the front winding is higher, and the production cost can be reduced by adopting the side winding; meanwhile, winding posts are arranged on two sides of the carrier, so that the mounting accuracy of the coil is improved; have the spread groove and set up the fixed column through opening, the coil of being convenient for is placed to the spread groove and goes out the income line, and will go out the line and fix on the fixed column, can reduce the equipment degree of difficulty.

Preferably, as an improvement, still include the gasket, go up the gasket and be located between carrier and the casing, go up the gasket and include gasket portion and fixed part, the fixed part left and right sides is opened has the magnetite groove that is used for fixed magnet group, and the fixed part top is opened has the chip groove that is used for holding driver chip. The fixing part is arranged, so that glue of the magnet group can be conveniently bonded and fixed, the mounting precision of the magnet is improved, and the fixing stability of the magnet group can be ensured; through the setting of gasket portion, can produce the cushioning effect when the device receives unexpected striking internals vibrations, and then protect the inside part of device.

Preferably, as an improvement, still include last reed, lower reed and base, go up the gasket and pass through last reed and carrier connection, the carrier passes through lower reed and base connection. By arranging the upper spring plate and the lower spring plate, when the carrier is stressed to move quickly or the device is impacted, vibration and impact energy are absorbed, so that the movement of the whole carrier is kept balanced, and the inclination risk is reduced; and to ensure that the lens is in the initial position when the device is at rest.

Preferably, as an improvement, the base is internally provided with a multi-stage groove, the lower reed is provided with a positioning hole, and the surface of the base opposite to the carrier is provided with a positioning column for positioning and fixing the lower reed. Through the groove in the base, a bearing space and a carrier moving space can be provided for the internal part, so that the movement of the carrier is ensured; be equipped with the reference column in the base, be convenient for pass the locating hole of lower spring, match the equipment with lower spring, can promote the equipment precision, and then promote the effect of focusing.

Preferably, as an improvement, a terminal is provided for connecting the terminal to the circuit board, one end of the lower spring is electrically connected to the coil, and the other end of the lower spring is electrically connected to the terminal. Through the arrangement, the circuit board, the lower spring plate and the coil form a loop during assembly, the coil current can be controlled by utilizing the lower spring plate and the coil, other circuits are not required to be additionally arranged to electrically connect the coil and the circuit board, the processing difficulty is reduced, and the use reliability of the device is improved.

Preferably, as a refinement, the first lens group includes four lenses. Through the arrangement, the first lens group and the second lens group are added to form 5 lenses in total, the imaging is more real when the number of the lenses is more, the capability of converging light is strong, and the resolution and the contrast of the lens can be enhanced; the resolution and contrast of the lens can be enhanced, and the picture quality is improved.

Preferably, as an improvement, still include the lens seat, it has the ladder groove to be used for fixed first lens group to open in the lens seat, and the lens seat is fixed with the casing. Through setting up the lens seat to the realization is firmly fixed with first lens group, is convenient for align the optics center of each lens through the ladder groove, promotes the installation accuracy.

Drawings

FIG. 1 is an exploded view of an embodiment of the present invention;

fig. 2 is a three-dimensional view of a carrier according to an embodiment of the present invention;

FIG. 3 is a three-dimensional view of a base according to an embodiment of the present invention;

FIG. 4 is a three-dimensional view of a lower spring plate according to an embodiment of the present invention;

fig. 5 is an overall view of the embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the lens holder 1, the first lens group 2, the housing 3, the upper reed 4, the second lens group 5, the carrier 6, the lower reed 7, the base 8, the circuit board 9, the magnet group 10, the winding post 11, the coil 12, the hall magnet 13, the driving chip 14, the magnet groove 15, the chip groove 16, the connecting groove 17, the fixing post 18, the positioning hole 19, the positioning post 20, the terminal 21, the gasket part 22 and the buffer block 23.

Examples

In the embodiment, as shown in fig. 1 to 5, the novel focusing actuator device shown in fig. 1 and 5 includes a lens holder 1, a first lens group 2, a housing 3, a second lens group 5, a power structure and a circuit board 9, which are sequentially arranged, wherein the power structure drives the second lens group 5 to move, the second lens group 5 is a single lens, and the first lens group 2 includes four lenses. The power structure comprises a carrier 6 and a magnet group 10, wherein as shown in fig. 2, winding posts 11 are arranged on two sides of the carrier 6, a coil 12 is wound on the winding posts 11, and the coil 12 is opposite to the magnet group 10; still include hall location group, hall location group includes hall magnetite 13 and the driver chip 14 who has integrateed the hall chip, and hall magnetite 13 is fixed on carrier 6, has seted up corresponding holding tank on carrier 6 and is used for holding hall magnetite 13, and driver chip 14 is connected with circuit board 9 and coil 12 electricity respectively.

In this embodiment, an upper gasket is disposed between the carrier 6 and the housing 3, the upper gasket includes a gasket portion 22 and a fixing portion, two sides of the fixing portion are provided with a magnet groove 15 for fixing the magnet assembly 10, and a chip groove 16 is disposed above the fixing portion for accommodating the driving chip 14.

As shown in fig. 2, in the embodiment, the carrier 6 is provided with a connecting groove 17 near the winding post 11, the end of the connecting groove 17 is provided with a fixing post 18, the connecting groove 17 is used for guiding and placing the coil 12 to enter and exit the wire and the connecting groove 17 is provided with the fixing post 18, and the entering and exiting wire is fixed on the fixing post 18, so that the difficulty of later assembly can be reduced. The spring plate comprises an upper spring plate 4, a lower spring plate 7, a terminal 21 and a base 8, wherein the upper gasket is connected with a carrier 6 through the upper spring plate 4, and the carrier 6 is connected with the base 8 through the lower spring plate 7. As shown in fig. 4, the number of the lower reeds 7 is two, the two lower reeds 7 are distributed at the left and right and are not communicated, two ends of the lower reed 7 are provided with connecting plates so as to be connected with the terminal 21 and the coil 12 in and out wires in a welding manner, one end of the lower reed 7 is connected with the coil 12 in a welding manner through the fixing column 18, the other end of the lower reed 7 is connected with the terminal 21 in a welding manner, as shown in fig. 3, the terminal 21 is embedded into the base 8 and is connected with the circuit board 9 in a welding manner, and through the arrangement, the circuit board 9, the terminal 21, the lower reed 7 and the coil 12 form a closed loop, so that the current size and direction of the coil 12 can be controlled. The circuit board 9 in this embodiment is an FPC circuit board 9.

As shown in fig. 2 and 3, the base 8 has a multi-stage groove therein, the lower spring 7 has a positioning hole 19, and the surface of the base 8 opposite to the carrier 6 is provided with a positioning post 20 for positioning and fixing the lower spring 7. As shown in fig. 2, two side surfaces of the carrier 6 are provided with a plurality of buffer blocks 23, on one hand, the buffer blocks 23 can limit the upper spring plate 4 and the lower spring plate 7, so that the positions of the upper spring plate and the lower spring plate are centered and cannot be easily moved, and the positioning and installation are convenient during assembly; on the other hand, when the carrier 6 moves fast and collides with other parts, the buffer block 23 is made of soft rubber, so that the buffer function can be achieved, and the internal parts of the device are prevented from being damaged by collision.

The specific implementation process is as follows:

the driving chip 14 is electrically connected with the circuit board 9 and the coil 12 respectively, when the circuit board is powered on, current passes through the coil 12, the driving chip 14 controls the current of the corresponding coil 12, the coil 12 and the magnet group 10 generate electromagnetic induction to enable the carrier 6 to move by changing the current size and direction of the coil 12, and the carrier 6 moves to drive the second lens group 5 to move at the same time to adjust the second lens group to a proper position to shoot a clear image. The Hall magnet 13 and the drive chip 14 integrated with the Hall chip are arranged in the embodiment, the signal states of automatic focusing and anti-shaking can be recorded at any time, and the focusing state and the anti-shaking position can be quickly and accurately adjusted through the induction of magnetic flux, so that a more accurate focusing effect is realized.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (8)

1. A novel focusing actuator device is characterized in that: including the first lens group, casing, second lens group, power structure and the circuit board that arrange in proper order, power structure drives second lens group and removes, and second lens group is single lens, and power structure includes carrier and magnet group, and the both ends of carrier are equipped with the coil and relative with magnet group, still includes hall location group, and hall location group includes hall magnetite and the driver chip who has integrateed hall chip, and the hall magnetite is fixed on the carrier, and driver chip is connected with circuit board and coil electricity respectively.

2. The novel focus actuator assembly of claim 1, wherein: the carrier both sides are equipped with the wrapping post, and the coil winding is on the wrapping post, and the carrier is opened near the wrapping post has the spread groove, and the end of spread groove is equipped with the fixed column.

3. The novel focus actuator assembly of claim 2, wherein: still include the gasket, go up the gasket and be located between carrier and the casing, go up the gasket and include gasket portion and fixed part, the fixed part left and right sides is opened has the magnetite groove that is used for fixed magnet group, and the fixed part top is opened has the chip groove that is used for holding driver chip.

4. A novel focus actuator assembly as claimed in claim 3, wherein: the device also comprises an upper reed, a lower reed and a base, wherein the upper gasket is connected with the carrier through the upper reed, and the carrier is connected with the base through the lower reed.

5. The novel focus actuator assembly of claim 4, wherein: the base is internally provided with a multi-stage groove, the lower reed is provided with a positioning hole, and the surface of the base opposite to the carrier is provided with a positioning column for positioning and fixing the lower reed.

6. The novel focus actuator assembly of claim 5, wherein: and a terminal connected with the circuit board is arranged, one end of the lower reed is electrically connected with the coil, and the other end of the lower reed is electrically connected with the terminal.

7. The novel focus actuator assembly of claim 6, wherein: the first lens group comprises four lenses.

8. The novel focus actuator assembly of claim 7, wherein: still include the lens seat, it has the ladder groove to be used for fixed first lens group to open in the lens seat, and the lens seat is fixed with the casing.

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