CN110646915A - Periscope lens drive - Google Patents

Abstract

The invention discloses a periscope lens driving device, comprising a base, a carrier, a bottom circuit board, an OIS component and an AF component. The OIS assembly includes an OIS magnet and an OIS coil group, the AF assembly includes an AF magnet and an AF coil assembly, the carrier is provided with a lens mounting hole for installing the lens, the OIS magnet is installed on both sides of the lens mounting hole of the carrier, and the AF magnet is installed on the carrier. At the bottom, the AF coil set is mounted on the bottom circuit board and cooperates with the AF magnet. Two ends of the base are provided with protruding blocks extending upward as a whole, and the OIS coil group is mounted on the protruding blocks and cooperates with the OIS magnet. An embedded metal sheet is also arranged in the base, and the OIS coil group is electrically connected with the embedded metal sheet and drives the carrier to move when the power is turned on, so as to realize the optical anti-shake function. The invention cancels the participation of the suspension wire in the overall circuit, and only participates in physical movements such as homing, so as to ensure the stability of the circuit.

Description

Periscope lens drive

technical field

The invention relates to the technical field of optical imaging equipment, in particular to a periscope lens driving device.

Background technique

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

Some electronic devices with photographing or video recording functions are provided with a lens driving module to drive an optical component such as a lens to move, thereby achieving the functions of autofocus (autofocus) and Optical Image Stabilization (OIS). The light can be imaged on a photosensitive element through the aforementioned optical element.

However, these lens driving modules usually have a suspension wire structure, and the suspension wire participates in the circuit part. Since the suspension wire is used as the unreturned part of the carrier, problems such as deformation when it is impacted will affect the circuit transmission and even lead to the overall failure. In addition, the suspension wire is involved in circuit transmission, and it is relatively difficult to assemble the components when the upper reed and other components are assembled and assembled.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a periscope lens driving device to solve the above-mentioned problems in the prior art.

In order to solve the above problems, according to one aspect of the present invention, a periscope lens drive device is provided, the periscope lens drive device includes a base, a carrier, a bottom circuit board, an OIS assembly and an AF assembly, wherein the OIS The assembly includes an OIS magnet and an OIS coil assembly, the AF assembly includes an AF magnet and an AF coil assembly,

The carrier is provided with a lens mounting hole for mounting a lens, the OIS magnet is mounted on both sides of the lens mounting hole of the carrier, and the AF magnet is mounted on the bottom of the carrier,

The AF coil set is mounted on the bottom circuit board and cooperates with the AF magnet,

Both ends of the base are provided with protruding blocks that protrude upwards as a whole, and the OIS coil set is mounted on the protruding blocks and cooperates with the OIS magnets,

An embedded metal sheet is also arranged in the base, and the OIS coil group is in electrical communication with the embedded metal sheet and drives the carrier to move to realize the optical anti-shake function when powered on.

In one embodiment, the lens driving device further includes a flexible suspension member, the flexible suspension member suspends the carrier on the base;

In one embodiment, the suspension element is a suspension wire, and no current is arranged on the suspension wire.

In one embodiment, the OIS assembly further includes an OIS patch mounted between the carrier and the OIS magnet.

In one embodiment, the AF assembly includes an AF patch mounted between the AF magnet and the carrier.

In one embodiment, the periscope lens driving device further includes an upper spring, the upper spring is disposed on the upper part of the carrier and connected with the upper end of the suspension member.

In one embodiment, the AF assembly further includes an AF sensor and an AF sensor magnet, the AF sensor magnet is disposed between the two AF magnets, the AF sensor is mounted on the bottom circuit board and is connected with all the AF magnets. The AF magnets are matched accordingly.

In one embodiment, the OIS assembly further includes an OIS sensor, and the OIS sensor is mounted on the base circuit board and corresponds to the OIS magnet.

In one embodiment, a coil is installed in the inside of the OIS coil set, a conductive part connected to the embedded metal sheet is formed in the middle of the OIS coil set, and the conductive part is in electrical communication with the coil.

In one embodiment, the periscope lens driving device further includes a housing, and the housing cooperates with the base to suspend the carrier in a space defined by the base and the housing.

In one embodiment, the base includes a bottom plate, a rectangular groove is formed in the middle of the bottom plate, and the protruding blocks are located on both sides of the groove.

In one embodiment, shoulders are formed on both sides of the protruding block, the inner surfaces of the shoulders integrally protrude inwardly to form a protruding portion, and the OIS coil assembly is mounted on the protruding portion.

In one embodiment, the four corners of the bottom plate are formed with support parts, the upper surface of the support part is provided with a buffer glue groove, and the buffer glue groove cooperates with the support column of the carrier to protect and support vector.

In one embodiment, an extension portion is integrally protruded from the outer side of one of the protruding blocks, and the edge of the extension portion is provided with a plurality of slots. After the metal sheet group is embedded in the base, the The end of the horizontal protruding piece is accommodated in the card slot and drawn out from the card slot.

In one embodiment, the main body part of the bottom plate is further provided with a plurality of casting holes and positioning posts, and the positioning posts are matched with the bottom circuit board and positioned.

In one embodiment, the metal sheet group has a main body portion, and two vertical protruding pieces are integrally protruded upward from both ends of the main body portion. When the metal sheet group and the OIS coil are installed on the base , the top of the vertical protruding piece is in contact with and electrically communicated with the conductive part of the OIS coil.

In one embodiment, hooks are integrally protruded from the adjacent sides of the two vertical protruding sheets located at the same end, so as to increase the bonding strength of the metal sheet group and the base.

In one embodiment, the four corners of the main body portion of the metal sheet group protrude first horizontal protruding pieces integrally toward both ends along the plane where the main body portion is located, and between the two first horizontal protruding pieces at the same end A second horizontal protruding piece is formed between, and the end of the first horizontal protruding piece and the end of the second horizontal protruding piece are matched with the card slot on the base to transmit current from the card slot. inside out.

In one embodiment, four corners of the bottom circuit board are formed with notches, and suspension holes of the bottom circuit board are formed on the notches.

In one embodiment, the bottom circuit board includes a first body portion, a second body portion, and a gap between the first body portion and the second body portion, wherein the first body is provided with the An OIS sensor, and the AF sensor is provided in the second body portion.

In one embodiment, the upper end of the OIS patch has ears that protrude to both sides, the two sides below the ears have clamping blocks that extend to the OIS magnet, and the clamping blocks form the OIS magnet an installation slot, and the OIS magnet is fixedly installed in the OIS magnet installation slot.

In one embodiment, the OIS patch and the AF patch are made of iron sheets.

In one embodiment, the carrier has a lens mounting portion, the lens mounting portion has a lens mounting hole extending along the optical axis direction, and the OIS assembly mounting portion is formed on both sides of the lens mounting hole.

In one embodiment, two sides of the OIS component mounting portion are formed with a suspension wire mounting portion, and the suspension wire mounting portion is integrally formed from both sides of the OIS component mounting portion to protrude along the optical axis direction, and the suspension wire mounting portion The height is lower than the height of the lens mount.

In one embodiment, a support column is provided at the bottom of the suspension wire mounting portion, and the support column cooperates with the buffer glue groove of the support portion on the base and is installed in the buffer glue groove during assembly.

In one embodiment, the top of the suspension wire mounting portion forms an upper spring plate mounting portion, and the upper spring plate is mounted on the upper spring plate mounting portion.

In one embodiment, the OIS component mounting portion is formed with an OIS component mounting groove, the OIS component mounting groove includes an OIS patch mounting groove formed on the inner side and an OIS magnet mounting groove located on the outer side, the OIS patch mounting groove The shape of the groove matches the shape of the OIS patch, and an ear groove is formed at the upper end to match the ear of the OIS patch. When the OIS patch is installed into the OIS patch installation groove, The ear is inserted into the ear groove and clamped.

In one embodiment, the shape of the OIS magnet mounting slot matches the shape of the OIS magnet, so that the OIS magnet can be inserted into the OIS magnet mounting slot and clamped.

In one embodiment, the upper leaf spring includes a first plate-shaped body and a second plate-shaped body that are integrally formed, a gap is formed between the first plate-shaped body and the second plate-shaped body, and the first plate-shaped body and the second plate-shaped body are formed. The plate-shaped main body and the second plate-shaped main body are also connected by a bending strip including a plurality of bends. The bending strip is provided with a suspension wire fixing part. When the upper spring plate is installed above the carrier, the suspension The upper end of the wire passes through and is fixed to the suspension wire fixing part.

The invention cancels the suspension wire from participating in the overall circuit, and only participates in physical movements such as homing, so as to ensure the stability of the circuit. At the same time, because it does not participate in circuit transmission, other alternative flexible materials can be used. The OIS part adopts a three-dimensional circuit, and a metal sheet group is installed inside the base. Simplified circuit and assembly difficulty of components such as bottom board sensors.

Description of drawings

FIG. 1 is a schematic structural diagram of a periscope lens driving structure.

2 is an exploded perspective view of the lens driving device of the present invention.

3 is a perspective view of a base of the lens driving device of the present invention.

4 is a perspective view of a metal plate group of the lens driving device of the present invention.

5 is a perspective view of the bottom circuit board of the lens driving device of the present invention.

6 is an exploded perspective view of the OIS assembly of the lens driving device of the present invention.

7 is a perspective view of a carrier of the lens driving device of the present invention.

8 is a perspective view of an AF unit of the lens driving device of the present invention.

9 is a perspective view of an upper spring of the lens driving device of the present invention.

FIG. 10 is an exploded perspective view of the base, the metal sheet group and the OIS coil group of the present invention.

FIG. 11 is a perspective view of the components of FIG. 10 assembled together.

12 is a perspective view of the base, the metal sheet group, the OIS coil group and the bottom circuit board assembled together according to the present invention.

13 is a perspective view of the lens driving device of the present invention.

14 is an exploded perspective view of the lens driving device of the present invention.

15 is a cross-sectional view of the lens driving device of the present invention.

16-17 are top views of the lens driving device of the present invention, wherein the spring plate is not installed in FIG. 16 .

18 is another cross-sectional view of the lens driving device of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solutions of the present invention.

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

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Additionally, the particular features, structures or characteristics may be combined in any manner in one or more embodiments.

In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but "front", "rear", "left", "right", "outer", "inner" should be "," "outward", "inward", "up", "down" and other words are to be understood as convenient terms, and should not be understood as limiting words.

FIG. 1 is a schematic structural diagram of a periscope lens driving structure. As shown in FIG. 1 , the periscope lens structure generally includes two parts, ie, a periscope part 100 and a prism part 200 . The prism part 200 is arranged at the front end of the periscope part 100 , and the imaging chip 300 is arranged at the rear end of the periscope part 100 . The light is reflected by the prism part 200 and enters the periscope part 100. The periscope part 100 includes an AF part and an OIS part. The AF part is responsible for the optical zoom function, and the OIS part is responsible for the anti-shake function, but the OIS part of the periscope part is only responsible for the vertical direction. The anti-shake function on an axis X in the Z direction of the optical axis, and the OIS of the prism part is responsible for the anti-shake function on the X-axis that is perpendicular to both the Z-axis and the Y-axis.

The embodiments involved in the following are mainly described with respect to the periscope part 100 . The periscope portion 100 is also referred to as a lens driving device in the present invention. FIG. 2 is an exploded perspective view of the lens driving device 100 of the present invention. As shown in FIG. 2 , the lens driving device 100 of the present invention as a whole includes a metal plate group 10 , a base 20 , a bottom circuit board 30 , an AF assembly 40 , a suspension wire 50 , an OIS assembly 60 , a carrier 70 , a reed 80 , and a support block 90 and housing 91. The metal sheet group 10 and the bottom circuit board 30 are mounted on the base 20 and together with the housing 91 form a receiving space to surround the suspension wire 50 , the AF assembly 40 , the OIS assembly 60 , the carrier 70 , the reed 80 and the support block 90 In the space formed by the housing 91 and the base 10 . Among them, the carrier 70 is used to install the lens (not shown in the figure) and can move in the space formed by the housing 91 and the base 10 under the driving of the AF component and the OIS component, so as to realize the functions of optical image stabilization and automatic focusing, which will be described in detail below. describe.

The individual components in one embodiment of the inventive lens driving apparatus 100 will be described in detail below.

FIG. 3 is a perspective view of the base 10 . As shown in FIG. 3 , the base 10 includes a bottom plate 11 , a rectangular groove 14 is formed in the middle of the bottom plate 11 , and the rectangular groove 14 extends from one edge of the bottom plate 11 to the opposite side edge of the bottom plate 11 to about half the width of the bottom plate to about two-thirds of the distance, and the width of the groove 14 is about one-third of the distance of the bottom plate 11 . Protruding blocks 17 integrally protruding upward along the opposite edge of the bottom plate 11 are formed on the opposite side of the groove 14 .

Both ends of the bottom plate 11 are provided with protruding blocks 12 that protrude upward as a whole. The protruding blocks 12 are located on both sides of the groove 14, and shoulders 121 are formed on both sides of the protruding block 12. A notch 123 is formed on the surface, and the inner surfaces of the two shoulders 121 are integrally protruded inward to form a protruding portion 124 , and the height of the protruding portion 124 is lower than that of the shoulders 121 . The protruding blocks 12 as a whole form a shape that increases in height from both sides to the middle. The OIS coil assembly 63 of the OIS assembly 60 is mounted on the protruding portion 124 .

The four corners of the bottom plate 11 are formed with support parts 13 , and the shape of the support parts 13 is preferably rectangular and the height is higher than that of the main body of the bottom plate 11 . The upper surface of the support portion 13 is provided with a buffer glue groove 131 . The buffer glue groove 131 cooperates with the support column 731 of the carrier 70 so as to protect and support the carrier 70 .

An extension portion 18 is integrally protruded from the outer side of one of the protruding blocks 12 . The two ends of the extension portion 18 are provided with rectangular blocks 14 . The edges of the extension portion 18 are provided with a plurality of clamping slots 15 . The clamping slots 15 are located at the rectangular blocks at both ends. between 14. After the metal sheet group 20 is embedded in the base 10 , the end portion 241 and the end portion 231 of the horizontally protruding sheet of the metal sheet group 20 are accommodated in the card slot 15 and drawn out from the card slot 15 . The main body part of the bottom plate 11 (excluding the groove 14 ) is further provided with a plurality of casting holes 191 and positioning columns 16 , and the positioning columns 16 are matched with the bottom circuit board 30 and positioned.

FIG. 4 is a perspective view of the sheet metal group 20 . As shown in FIG. 4 , the metal sheet group 20 is used to embed the inside of the base 10 , and perform structural reinforcement and electrical connection on the base 10 . Specifically, the metal sheet group 20 has a main body portion 21 , and two vertical protruding pieces 22 are integrally protruded upward from both ends of the main body portion 21 . The vertical protruding piece 22 is provided with a plurality of through holes 221, in this embodiment, there are three through holes 221, and the width of the upper part of the protruding piece 22 is reduced to form a reduced top 222, and the reduced top 222 can be provided The protruding pieces 22 on opposite sides protrude slightly, so that when the metal sheet group 20 is installed in the base 10 and the OIS coil 63 of the OIS assembly 60 is also installed on the base 10, the protruding top 222 and the OIS coil 63 are in contact with each other. The conductive portion 633 is in contact and is in electrical communication. Therefore, the top portion 222 also serves as a conductive portion. The hooks 223 are integrally protruded from the adjacent sides of the two protruding pieces 22 at the same end, and the hooks 223 are used to cooperate with corresponding parts on the base 10 , thereby increasing the bonding strength of the metal sheet group 20 and the base 10 .

The four corners of the main body portion 21 of the metal sheet group 20 integrally protrude first horizontal protruding pieces 23 toward both ends along the plane where the main body portion 21 is located. The width of the main body portion of the protruding piece 23, thereby forming the reduced end portion 231, between the two first horizontal protruding pieces 23 at the same end is formed a second horizontal protruding piece 24, which is formed The end portion 241 , the end portion 231 and the end portion 241 are matched with the card slot 15 on the base 10 and are accommodated in the card slot 15 and lead out the current from the card slot 15 .

One side of the main body portion 21 forms an intermediate matching portion 25 , a special-shaped gap 253 is formed between the intermediate matching portion 25 and the horizontal protruding pieces 23 at both ends of the same side, and two ends of the intermediate matching portion 25 form a protruding portion 251 . 251 cooperates with a groove (not shown) formed inside the base to increase the bonding strength of the metal sheet group 20 and the base 10 . A third horizontal protruding piece 26 , a fourth horizontal protruding piece 27 and a fifth horizontal protruding piece 28 are formed on the opposite side of the middle fitting portion 25 of the main body portion 21 . The fourth horizontal protruding piece 27 and the fifth horizontal protruding piece 28 are located on both sides of the third horizontal protruding piece 26 .

FIG. 5 is a perspective view of the bottom circuit board 30 . As shown in FIG. 5 , the bottom circuit board 30 forms a “concave” shape structure as a whole, including the first main body part 32 and the second main body part 34 on both sides and the first main body part 32 and the second main body part 34 between the first main body part 32 and the second main body part 34 gap 31 between. The four corners of the bottom circuit board 30 are formed with notches 33, and the bottom circuit board suspension holes 331 are formed on the notches 33, wherein the two suspension holes 331 are located on the two outer corners of the first main body part 32, The other two suspension holes 331 are located on the two outer corners of the second main body portion 34 .

An OIS sensor (not shown) is provided in the first main body 32 , and an AF sensor 36 is provided in the middle of the second main body portion 34 . The OIS sensor is used to cooperate with the OIS magnet, so as to detect the deviation of the OIS magnet and detect the deviation of the carrier 70 when the OIS magnet is installed on the carrier 70, and transmit the situation to the control system to realize the optical anti-shake function . The AF sensor 36 is used to cooperate with the sensor magnet 42 of the AF assembly 40, so as to detect the position of the AF sensor magnet 42, and then detect the offset position of the carrier 70, and transmit the offset to the control system to realize automatic focusing function, which will be described in further detail below.

FIG. 6 is an isometric exploded view of the OIS assembly 60 . As shown in FIG. 6 , the OIS assembly 60 includes an OIS patch 61 , an OIS magnet 62 and an OIS coil set 63 . The upper end of the OIS patch 61 has ears 611 protruding to both sides, and the two sides below the ears 611 have clamping blocks 612 extending toward the OIS magnet 62, and the clamping blocks 612 on both sides are opposite to each other from both sides. The OIS magnet 62 forms a surrounding potential and forms an OIS magnet installation groove 613 , and the OIS magnet 612 is fixedly installed in the OIS magnet installation groove 613 . The OIS patch of the present invention can be made of iron sheets or other materials with magnetic conductivity, which can increase the magnetic field of the magnet and effectively regulate the magnetic field direction of the OIS magnet.

The OIS magnet 62 is formed in a rectangular shape as a whole, and a magnet cutout 621 is formed at one corner of the upper end. The upper part of the OIS coil set 63 forms a coil cutout 631 . After the OIS magnet 62 and the OIS coil set 63 are installed, the OIS magnet cutaway 621 and the OIS coil cutaway 631 are located on different sides respectively. The two corners of the lower end of the OIS coil set 63 are formed with notches 632 , and the notches 632 are matched with the protruding parts 124 formed integrally extending inward from the inner surface of the shoulder part 121 on the base 10 . A conductive part 633 is also formed in the middle of the OIS coil set 63, the conductive part 633 on the left is connected to the positive electrode of the current, the conductive part 633 on the right is connected to the negative electrode of the current, or the conductive part 633 on the left is connected to the negative electrode of the current, and the conductive part 633 on the right is connected to the current negative electrode. Connect current positive.

The OIS coil group 63 is actually a component similar to a rigid bottom circuit board, and a coil (not shown) is installed in it. The conductive part 633 is electrically connected with the inner coil, so that the conductive part 633 is connected to the vertical protrusions on the metal sheet group 20 through the conductive part 633. Outgoing sheets 22 are in electrical communication to direct current through the metal sheet set 20 into the inner coil. In one embodiment, the conductive part 633 can be set as a conductive metal part, and a slightly protruding conductive end 222 is provided at the position of the metal sheet group 20 corresponding to the conductive part 633 , so that the conductive end 222 is connected to the OIS coil through the conductive end 222 . The groups 63 are connected to form circuit conduction.

The OIS coil set 63 further includes an OIS sensor (not shown in the figure), which is installed on the bottom circuit board 30 to monitor the position of the OIS magnet 621 . The OIS sensor is located at the bottom of the OIS magnet 621 on either side and is on the same centerline as the OIS magnet 621 , and the AF sensor 36 of the AF assembly 40 is provided on the side where the OIS sensor is not provided. In the embodiment shown in FIG. 5 In the example, the AF sensor 36 is provided on the second body portion 34 and the OIS sensor is provided on the first body portion 32 .

However, those skilled in the art should understand that the settings of the AF sensor 36 and the OIS sensor can also be reversed, for example, in the bottom circuit board 30 shown in FIG. 36, while the first main body portion 32 on the left is provided with an OIS sensor (not shown in the figure). When the carrier moves, the OIS sensor detects the deviated position of the OIS magnet and transmits the signal to the control system. The control system further adjusts the magnetic field force between the OIS coil and the OIS magnet by controlling the on-off and size of the current in the OIS coil. Thus, the deviated OIS carrier is pulled back to the top of the OIS sensor to realize the function of optical focusing.

FIG. 7 is a perspective view of the carrier 70 . As shown in FIG. 7 , the carrier 70 has a lens mounting portion 71 having a lens mounting hole 711 extending in the optical axis direction, and OIS assembly mounting portions 72 are formed on both sides of the lens mounting hole 711 . Suspended wire mounting portions 73 are formed on both sides of the OIS assembly mounting portion 72 . The suspension wire mounting portion 73 is integrally formed to protrude along the optical axis direction from both sides of the OIS assembly mounting portion 72 , and the height of the suspension wire mounting portion 73 is lower than the height of the lens mounting portion 71 . A support column 731 is provided at the bottom of the suspension wire mounting portion 73 . The support column 731 cooperates with the buffer glue groove 131 of the support portion 13 on the base 10 and is installed in the buffer glue groove 131 during assembly. The top of the suspension wire mounting portion 72 is the upper spring mounting portion 74 , and the upper spring 80 is mounted on the upper spring mounting portion 74 .

Specifically, the direction toward the lens mounting hole 711 of the suspension wire mounting portion 73 integrally protrudes from the outer convex portion 732 and the inner convex portion 733, and a suspension wire mounting groove 734 is formed between the outer convex portion 732 and the inner convex portion 733. The suspension wire is suspended in the suspension wire installation groove 734 . The inner protruding portion 734 is close to the lens mounting hole 711, and forms an arc surface on the side close to the lens mounting hole 711, so as to be matched with the lens. The middle part of the upper reed mounting portion 74 is provided with a downwardly concave groove 743, and the groove 743 cooperates with the elastically deformed part 80B of the upper reed 80, thereby reducing the frictional force when the upper yellow leaf 80 is elastically deformed, so that the elastically deformed part 80B Can be freely deformed. The groove 743 is provided with a through hole 744 extending from the upper surface to the lower surface of the suspension wire mounting portion 73 .

The upper surface of the suspension wire mounting portion 73 is provided with a first link member 741 and a second link member 742. The first link member 741 and the second link member 742 are respectively disposed on adjacent sides of the groove 743, so as to install the upper spring After 80 pieces, it is easy to operate.

The OIS component mounting portion 72 is formed with an OIS component mounting groove 721. The OIS component mounting groove 721 includes an OIS patch mounting groove 722 formed on the inside and an OIS magnet mounting groove 723 located on the outside. The shape of the sheet 61 fits and an ear groove 724 is formed at the upper end to match the ear 611 of the OIS patch 61. When the OIS patch 61 is installed into the OIS patch mounting groove 722, the ear 611 is embedded in the ear groove 724. and clamped. The shape of the OIS magnet installation groove 723 matches the shape of the OIS magnet 62 , and the OIS magnet 62 can be inserted into the OIS magnet installation groove 723 and clamped tightly. The OIS coil assembly 63 is mounted on the protruding portion 124 of the base 10 . Specifically, the OIS coil assembly 63 is installed on the base 10 by clamping the notch 632 at the lower end of the OIS coil assembly 63 on the protruding portion 124 of the base 10 . After the carrier 70 is installed on the base 10, the OIS patch 61, the OIS magnet 62 and the OIS coil group 63 are aligned in sequence, so that the carrier 70 can be driven to move under the action of magnetic force when the coil is energized, which will be further described below.

FIG. 8 is a perspective view of the AF unit 40 . As shown in FIG. 8 , the AF assembly 40 includes an AF magnet 41 , a sensor magnet 42 , an AF patch 43 , and an AF coil 44 . The AF magnet 41 , the sensor magnet 42 and the AF patch 43 are all fixedly mounted on the bottom of the carrier 70 , and the AF coil 44 is mounted on the bottom circuit board 30 . In this embodiment, there are two AF patches 43 on the left and right. One AF patch 43 corresponding to the sensor magnet 42 includes the AF magnet patch 432 and the sensor magnet patch 431 which are integrally formed. The sensor magnet patch 431 In the middle, the AF magnet patches 432 are located on both sides of the sensor magnet patches 431 . The other AF patch 43 includes only the AF magnet patch 431 .

In this embodiment, a total of four AF magnets 41 are included, however, those skilled in the art can understand that the number of AF magnets 41 may also be other. The sensor magnet 42 is disposed between the two AF magnets 41 and is aligned with the sensor 36 on the bottom circuit board 30 . The bottom of the carrier 70 is provided with an AF patch mounting portion (not shown) and an AF magnet mounting portion (not shown), the AF patch 43 is mounted in the patch mounting portion at the bottom of the carrier 70 , and the AF magnet 42 is mounted on the bottom of the carrier 70 In the AF magnet mounting part of the above, the sensor magnet 42 is located between the two AF magnets 41 and is installed in the sensor magnet mounting part. The AF coil 44 is installed on the bottom circuit board 30 and is aligned with the AF magnet, so that when the AF coil is powered on, the AF magnet is forced to move under the action of electromagnetic induction, thereby driving the carrier 70 to move, thereby realizing the function of automatic focusing.

The AF coil (not shown) of the AF assembly 40 is also mounted on the bottom circuit board 30 and corresponds to the position of the AF magnet 41 . During operation, the position of the AF sensor magnet 42 is detected by the AF sensor 36 and the position of the carrier 70 is detected. When the deviation of the carrier 70 is detected, the AF sensor 42 transmits the information to the control system, and the control system controls the AF coil (not shown in the figure). Under the action of electromagnetic induction, the on-off or the magnitude of the current in the shown) forces the AF magnet to move and then drives the carrier 70 to move, thereby realizing the function of auto-focusing. The AF coil and the AF sensor in the present invention are both mounted on the bottom circuit board 30, the AF magnet 41 is mounted on the bottom of the carrier 70, and the AF patch 43 is mounted between the AF magnet 41 and the carrier 70, and the AF patch 43 can strengthen the The role of the magnetic field. The AF sensor 36 is aligned with the center of the AF induction magnet 42 , and the AF induction magnet 42 is also provided with an AF patch 43 , so as to regulate the magnetic field and make the operation of the AF sensor 36 more stable.

FIG. 9 is a perspective view of the upper spring 80 . As shown in FIG. 9 , the upper reed 80 includes a fixed part 80A and an elastic deformation part 80B, the fixed part 80A is fixed on the carrier 70 , and the elastic deformation part 80B is fixedly connected with the suspension wire 50 and can be elastically deformed with the movement of the carrier 70 , so that the carrier 70 is movably suspended on the base 10 through the suspension wire 50 .

The fixed portion 80A includes a first plate-shaped body 81 and a second plate-shaped body 82 . The first plate-shaped body 81 and the second plate-shaped body 82 are integrally formed. A notch 84 is formed between the first plate-shaped body 81 and the second plate-shaped body 82 , and the notch 84 is matched with the corresponding corner portion on the carrier 70 to install the upper spring 80 on the carrier 70 . A first connecting hole (not shown) is provided on the first plate-shaped body 81 to cooperate with the first connecting piece 741 of the spring plate mounting portion 74 on the carrier 70 , and a second plate-shaped body 82 is provided with a second connecting hole 741 on the carrier 70 The connecting hole (not shown in the figure) is used to cooperate with the second connecting piece 742 of the spring plate mounting part 74 on the carrier 70. The first connecting piece 741 is fixed through the first connecting hole, and the second connecting piece 742 passes through the second connecting hole. fixed, thereby fixing the upper spring 80 to the carrier 70 .

It can be clearly seen from FIG. 13 that there is a certain distance between the first connecting hole and the second connecting hole (ie, the distance between the first link member 741 and the second link member 742 ), so as to facilitate the operation and make the entire upper spring The force-bearing points of the sheets are dispersed, which facilitates the firm fixing of the upper spring 80 to the carrier 70 and is not easily damaged during the movement of the carrier.

The elastic deformation part 80B includes a first elastic part 85 and a second elastic part 86 , the first elastic part 85 is composed of a plurality of bent strips, and one end of the first elastic part 85 is connected to the edge of the first plate-shaped body 81 , the other end of the first elastic portion 85 is connected to the suspension wire fixing portion 83 . The second elastic portion 86 is also composed of a plurality of bent strips. One end of the second elastic portion 85 is connected to the second plate-shaped body 82 , and the other end of the second elastic portion 85 is connected to the suspension wire fixing portion 83 .

In this embodiment, the suspension wire fixing part 83 is integrally formed with the first elastic part 85 and the second elastic part 86 , in other words, the first elastic part 85 , the second elastic part 86 and the suspension wire fixing part 83 are integrally formed by An elastic strip is formed by bending, wherein the first elastic part 85 forms an "S" body as a whole, one end of the "S"-shaped body is connected to the edge of the first plate-shaped body 81, and the other end of the "S"-shaped body is bent The suspension wire fixing portion 83 is formed. Similarly, the second elastic part 86 also forms an "S"-shaped main body as a whole, one end of the "S"-shaped main body is connected to the edge of the second plate-shaped main body 82, and the other end of the "S" main body is connected to the suspension wire fixing part 83 on. When the upper spring 80 is installed above the carrier 70 , the upper end of the suspension wire 50 passes through the suspension wire fixing portion 83 and is suspended on the suspension wire fixing portion 83 .

Referring to FIG. 9 in conjunction with FIG. 13 , when the lower end of the suspension wire 50 is fixed on the base 10 and the upper end is fixed on the suspension wire fixing portion 83 of the upper spring 80 , the upper spring 80 passes through the first fixing member 87 and the second fixing member When the 88 is fixedly connected to the upper part of the carrier 70, the carrier 70 can be suspended above the base 10 to move along the X-axis and the Y-axis direction. Preferably, the first elastic portion 85 forms an S-shaped bend along the Y-axis direction, and the second elastic portion 86 forms an S-shaped bend along the X-direction, so that when the carrier 70 moves along the Y-axis direction, the The elastic portion 85 returns to its original position under the action of the elastic force of the elastic portion 85 , and after the carrier 70 moves along the X-axis, it can return to its original position under the action of the second elastic portion 86 . That is to say, the optical image stabilization and auto-focusing functions can be realized by the functions of the OIS assembly 60 , the AF assembly 40 , the suspension wire 50 and the upper reed 80 , and at the same time, the action carrier of the upper reed 80 can return to its original position.

FIG. 10 is an exploded perspective view of the base 10 , the metal sheet set 20 and the OIS coil set 63 of the present invention, and FIG. 11 is a perspective view of the components of FIG. 10 assembled together. As shown in FIGS. 10-11 , when the base 10 , the metal sheet set 20 and the OIS coil set 63 are assembled together, the metal sheet set 20 is installed inside the base 10 , and the top 222 of the protruding piece 22 of the metal sheet set 20 is located on the shoulder On the front side of the part 121, the end 231 of the first horizontal protruding piece 23 and the end 241 of the second horizontal protruding piece 24 are accommodated in the plurality of card slots 15 of the base 10 and drawn out from the card slots 15, wherein, The ends 231 of the first horizontal protruding piece 23 are located in the card slots 15 on both sides, and the ends 241 of the second horizontal protruding piece 24 are located in the middle card slot 15 . The OIS coil set 63 is installed on the inner side of the vertical protruding piece 12 of the base 10 , and the notch 632 of the OIS coil set is clamped on the protruding part 124 formed by the inner surface of the shoulder 121 of the base 10 protruding inwardly, so as to connect the OIS coil set 63 . The coil assembly 632 is fixedly mounted on the base 10 .

12 is a perspective view of the base 10 , the metal sheet group 20 , the OIS coil group 63 and the bottom circuit board 30 assembled together according to the present invention. As shown in FIG. 12 , on the basis of the components shown in FIG. 11 , the bottom circuit board 30 is continued to be installed on the base 10 , wherein the shape and size of the middle gap 31 of the bottom circuit board 30 and the rectangular groove 14 of the base 10 match so that when the bottom circuit board 30 is mounted on the base 10 , the notch 31 of the bottom circuit board 30 is aligned with the rectangular groove 14 of the base 10 , and the notch 33 of the corner of the bottom circuit board 30 is aligned with the support portion 13 on the base 10 Fasten and fix, the bottom circuit board suspension hole 331 on the bottom circuit board 30 is aligned with the base suspension hole 19 on the base 10, and after the carrier is installed, the suspension wire is hung on the bottom circuit board suspension hole 331 and the base suspension. inside the wire hole 19.

FIG. 13 is a perspective view of the lens driving device 100 of the present invention. 14 is a perspective view of the lens driving device 100 , FIG. 15 is a cross-sectional view of the lens driving device 100 , and FIGS. 16 to 17 are top views of the lens driving device 100 . Another cutaway view. As shown in FIG. 13 , after the AF assembly 40 and the OIS assembly 60 are installed on the carrier 70 , the carrier 70 is installed on the base 10 on the basis of FIG. 12 . As shown in Figures 13-18 and in conjunction with Figures 6-9, both the OIS patch 61 and the OIS magnet 62 of the OIS component 60 are installed on the carrier 70, wherein the OIS patch 61 is first installed in the OIS component mounting slot of the carrier 70 721 inside the OIS patch mounting groove 722, and then install the OIS magnet 62 in the outer OIS magnet mounting groove 723, the ear 611 of the OIS patch 61 is fitted into the ear groove 724 and clamped tightly, the OIS magnet 62 is inserted into the OIS magnet installation slot 723 and clamped.

The AF assembly 40 is mounted on the lower surface of the carrier 70, wherein the AF patch 43 is first mounted on the AF patch mounting portion of the carrier 70, and then the AF magnet 41 is mounted on the AF patch 43, and the sensor magnet 42 is located on the two AF patches. Between the magnets 41 and mounted in the middle of one of the AF patches 43 . After the AF assembly 40 and the OIS assembly 60 are mounted on the carrier 70 , the entire device formed by the carrier 70 , the OIS assembly 60 and the AF assembly 40 is mounted on the base 10 . The support column 731 at the bottom of the suspension wire mounting portion 73 is installed in the buffer groove 131 of the support portion 13 on the base 10 , so that the support portion 13 on the base 10 is a structure that mainly bears the weight of the carrier 70 . The OIS magnet 62 of the OIS assembly 60 mounted on the carrier 70 faces the OIS coil set 63 mounted on the base 10 . When the OIS coil 63 is powered on, the OIS magnet 62 can be driven to move, thereby driving the carrier 70 to move, thereby realizing the optical anti-shake function. The AF magnet 42 of the AF assembly 40 faces the AF coil (not shown) installed in the bottom circuit board 30, so that when the AF coil is energized, the AF magnet 42 is driven to move, thereby driving the carrier 70 to move to realize the auto-focusing function.

13 , after the carrier 70 on which the AF assembly 40 and the OIS assembly 60 are installed is installed on the base 10 , the upper spring 80 is installed and fixed on the upper spring mounting portion 74 of the carrier 70 . The suspension wire mounting portion 83 of the upper spring 80 is aligned with the suspension wire hole 331 of the bottom circuit board 30 and the suspension wire hole 19 of the base. Insert the suspension wire into the suspension wire hole 19 of the base and the suspension wire hole 331 of the bottom circuit board and fix it to the suspension wire installation part 83 of the upper spring 80, so that the carrier can be suspended on the base under the suspension of the suspension wire 50. Exercise on 10. In this application, the suspension wire 50 only plays the role of a suspension carrier, and no current is set thereon. This solution cancels the suspension wire's participation in the overall circuit and only participates in physical movements such as homing to ensure circuit stability. In addition, those skilled in the art can understand that since the suspension wire does not participate in circuit transmission, the suspension wire can be replaced by other flexible materials, as long as it can suspend the carrier on the base to move.

Referring back to FIG. 1 , the driving mechanism of the present invention further includes a casing 90 , which cooperates with the base 10 to encapsulate the bottom circuit board 30 , the AF assembly 40 , the OIS assembly 60 , the carrier 70 , and the upper spring 80 in the casing 90 . within the space defined by the base 10 .

The present invention ensures the stability of the circuit of the entire lens driving device by eliminating the suspension wire from participating in the overall circuit and only making it participate in physical movements such as homing. In addition, the three-dimensional circuit is used in the OIS component part, and the metal sheet group is installed inside the base, which simplifies the assembly difficulty of components such as the circuit and the bottom circuit board sensor.

The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention. Such equivalents also fall within the scope defined by the claims appended hereto.

Claims (10)

1. A periscope lens drive device, characterized in that the periscope lens drive device comprises a base, a carrier, a bottom circuit board, an OIS assembly and an AF assembly, wherein the OIS assembly includes an OIS magnet and an OIS coil group , the AF assembly includes an AF magnet and an AF coil set, The carrier is provided with a lens mounting hole for mounting a lens, the OIS magnet is mounted on both sides of the lens mounting hole of the carrier, and the AF magnet is mounted on the bottom of the carrier, The AF coil set is mounted on the bottom circuit board and cooperates with the AF magnet, Both ends of the base are provided with protruding blocks that protrude upwards as a whole, and the OIS coil assembly is mounted on the protruding blocks and cooperates with the OIS magnet, and An embedded metal sheet is also arranged in the base, and the OIS coil group is in electrical communication with the embedded metal sheet and drives the carrier to move to realize the optical anti-shake function when powered on. 2 . The periscope lens driving device according to claim 1 , wherein the lens driving device further comprises a flexible suspension member, and the flexible suspension member suspends the carrier on the base; 2 . In one embodiment, the suspension element is a suspension wire, and no current is arranged on the suspension wire. 3 . The periscope lens driving device according to claim 1 , wherein the OIS component further comprises an OIS patch, and the OIS patch is installed between the carrier and the OIS magnet. 4 . 4 . The periscope lens driving device according to claim 1 , wherein the AF component comprises an AF patch, and the AF patch is installed between the AF magnet and the carrier. 5 . 5 . The periscope lens driving device according to claim 2 , wherein the periscope lens driving device further comprises an upper spring, the upper spring is arranged on the upper part of the carrier and is connected with the suspension member 5 . top connection. 6 . The periscope lens driving device according to claim 1 , wherein the AF assembly further comprises an AF sensor and an AF sensor magnet, and the AF sensor magnet is disposed between the two AF magnets, so that the The AF sensor is mounted on the bottom circuit board and is correspondingly matched with the AF magnet. 7 . The periscope lens driving device according to claim 1 , wherein the OIS assembly further comprises an OIS sensor, and the OIS sensor is mounted on the base circuit board and corresponds to the OIS magnet. 8 . In one embodiment, a coil is installed in the inside of the OIS coil set, a conductive part connected to the embedded metal sheet is formed in the middle of the OIS coil set, and the conductive part is in electrical communication with the coil. 8 . The periscope lens driving device according to claim 1 , wherein the periscope lens driving device further comprises a casing, and the casing cooperates with the base to suspend the carrier from the base. 9 . within the space defined by the base and the casing. 9 . The periscope lens driving device according to claim 1 , wherein the base comprises a bottom plate, a rectangular groove is formed in the middle of the bottom plate, and the protruding blocks are located on both sides of the groove. 10 . 10 . The periscope lens driving device according to claim 9 , wherein shoulders are formed on both sides of the protruding block, and an inner surface of the shoulders integrally protrudes inward to form a protruding part, 10 . The OIS coil set is mounted on the protruding part. In one embodiment, the four corners of the bottom plate are formed with support parts, the upper surface of the support part is provided with a buffer glue groove, and the buffer glue groove cooperates with the support column of the carrier to protect and support vector. In one embodiment, an extension portion is integrally protruded from the outer side of one of the protruding blocks, and the edge of the extension portion is provided with a plurality of slots. After the metal sheet group is embedded in the base, the The end of the horizontal protruding piece is accommodated in the card slot and drawn out from the card slot. In one embodiment, the main body part of the bottom plate is further provided with a plurality of casting holes and positioning posts, and the positioning posts are matched with the bottom circuit board and positioned. In one embodiment, the metal sheet group has a main body portion, and two vertical protruding pieces are integrally protruded upward from both ends of the main body portion. When the metal sheet group and the OIS coil are installed on the base , the top of the vertical protruding piece is in contact with and electrically communicated with the conductive part of the OIS coil. In one embodiment, hooks are integrally protruded from the adjacent sides of the two vertical protruding sheets located at the same end, so as to increase the bonding strength of the metal sheet group and the base. In one embodiment, the four corners of the main body portion of the metal sheet group protrude first horizontal protruding pieces integrally toward both ends along the plane where the main body portion is located, and between the two first horizontal protruding pieces at the same end A second horizontal protruding piece is formed between, and the end of the first horizontal protruding piece and the end of the second horizontal protruding piece are matched with the card slot on the base to transmit current from the card slot. inside out. In one embodiment, four corners of the bottom circuit board are formed with notches, and suspension holes of the bottom circuit board are formed on the notches. In one embodiment, the bottom circuit board includes a first body portion, a second body portion, and a gap between the first body portion and the second body portion, wherein the first body is provided with the An OIS sensor, and the AF sensor is provided in the second body portion. In one embodiment, the upper end of the OIS patch has ears that protrude to both sides, the two sides below the ears have clamping blocks that extend to the OIS magnet, and the clamping blocks form the OIS magnet an installation slot, and the OIS magnet is fixedly installed in the OIS magnet installation slot. In one embodiment, the OIS patch and the AF patch are made of iron sheets. In one embodiment, the carrier has a lens mounting portion, the lens mounting portion has a lens mounting hole extending along the optical axis direction, and the OIS assembly mounting portion is formed on both sides of the lens mounting hole. In one embodiment, two sides of the OIS component mounting portion are formed with a suspension wire mounting portion, and the suspension wire mounting portion is integrally formed from both sides of the OIS component mounting portion to protrude along the optical axis direction, and the suspension wire mounting portion The height is lower than the height of the lens mount. In one embodiment, a support column is provided at the bottom of the suspension wire mounting portion, and the support column cooperates with the buffer glue groove of the support portion on the base and is installed in the buffer glue groove during assembly. In one embodiment, the top of the suspension wire mounting portion forms an upper spring plate mounting portion, and the upper spring plate is mounted on the upper spring plate mounting portion. In one embodiment, the OIS component mounting portion is formed with an OIS component mounting groove, the OIS component mounting groove includes an OIS patch mounting groove formed on the inner side and an OIS magnet mounting groove located on the outer side, the OIS patch mounting groove The shape of the groove matches the shape of the OIS patch, and an ear groove is formed at the upper end to match the ear of the OIS patch. When the OIS patch is installed into the OIS patch installation groove, The ears are inserted into the grooves of the ears and fastened. In one embodiment, the shape of the OIS magnet mounting slot matches the shape of the OIS magnet, so that the OIS magnet can be inserted into the OIS magnet mounting slot and clamped. In one embodiment, the upper leaf spring includes a first plate-shaped body and a second plate-shaped body that are integrally formed, a gap is formed between the first plate-shaped body and the second plate-shaped body, and the first plate-shaped body and the second plate-shaped body are formed. The plate-shaped main body and the second plate-shaped main body are also connected by a bending strip including a plurality of bends. The bending strip is provided with a suspension wire fixing part. When the upper spring plate is installed above the carrier, the suspension The upper end of the wire passes through and is fixed to the suspension wire fixing part.

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