Periscope lens driving device

Abstract

The present invention belongs to the technical field of optical imaging devices, and particularly relates to a lens driving device. A periscope lens driving device includes a housing, a base, a driving component, a carrier, and a circuit board. There is a hollow cavity between the housing and the base, and both the carrier and the driving component are arranged in the hollow cavity; the carrier includes a prism carrier and a lens carrier; the driving component includes a plurality of magnets and corresponding coils; the nodding magnet and the shaking magnet are respectively installed on adjacent side walls of the prism carrier, and the zoom magnet is installed on the lens carrier; a circuit board is arranged on the base, and the nodding coil, the shaking coil, and the zoom coil are integrated on the circuit board. The present invention realizes the rotation of the prism in two different directions by the rotation of the prism carrier in two different directions, thereby changing the irradiation direction of light. The overall structure of the present invention is compact and reliable, and the volume is small, which is very suitable for lightweight and miniaturized electronic products.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical imaging devices, and particularly relates to a lens driving device. Background Art

[0002] With the development of technology, many current electronic devices (such as smartphones or digital cameras) have the function of taking photos or videos. The use of these electronic devices is becoming more and more common, and they are developing towards a convenient, thin and light design direction to provide users with more choices.

[0003] Among them, the lens, prism assembly and optical zoom assembly of the periscope lens are all built inside the body, which can greatly reduce the overall thickness and weight of the device, so it is used in the lightweight design. However, the existing periscope lenses usually use spring-type or reed-type prism / zoom driving components to achieve the driving of the prism or the zoom function of the lens. Springs or reeds are prone to metal fatigue during long-term use, reducing their reset effect, and the design of springs or reeds often involves many parts and complex installation processes, resulting in difficulties in assembly, low yield rate and poor reliability. Summary of the Invention

[0004] The present invention aims to provide a periscope lens driving device for the above technical problems.

[0005] To solve the above problems, according to one aspect of the present invention, a periscope lens driving device is provided, including a housing, a base, a driving component, a carrier and a circuit board. There is a hollow cavity between the housing and the base, and the carrier and the driving component are both arranged in the hollow cavity;

[0006] The carrier includes a prism carrier and a lens carrier located on the side of the prism carrier;

[0007] The driving component includes a plurality of magnets and corresponding coils, namely a nodding magnet, a shaking magnet, a zoom magnet, a nodding coil, a shaking coil and a zoom coil;

[0008] The nodding magnet and the shaking magnet are respectively installed on adjacent side walls of the prism carrier, and the zoom magnet is installed on the lens carrier;

[0009] The circuit board is arranged on the base, and the nodding coil, the shaking coil and the zoom coil are integrated on the circuit board. The nodding coil is arranged opposite to the nodding magnet, the shaking coil is arranged opposite to the shaking magnet, and the zoom coil is arranged opposite to the zoom magnet.

[0010] In the present invention, a nodding magnet cooperates with its corresponding nodding coil to enable the prism carrier to nod around a direction perpendicular to the optical axis direction, so that the prism mounted on the prism carrier nods together; a shaking magnet cooperates with its corresponding shaking coil to enable the prism carrier to shake around another direction perpendicular to the optical axis direction, so that the prism mounted on the prism carrier shakes together; a zoom magnet cooperates with its corresponding zoom coil to enable the lens carrier to move along the optical axis direction, thereby enabling the lens on the lens carrier to achieve a zoom function.

[0011] The base is a hollow rectangular frame, and circuit board mounting grooves are respectively provided on the outer walls of three adjacent sides of the base;

[0012] The circuit board is a circuit board having at least three sides, and the nodding coil, the shaking coil, and the zoom coil are respectively provided on three sides of the circuit board, and the three sides of the circuit board are respectively arranged in a corresponding one of the circuit board mounting grooves.

[0013] There are two shaking coils, and the two shaking coils are oppositely arranged on two opposite sides of the circuit board, and the nodding coil is located on one side adjacent to both of the two shaking coils.

[0014] There are two zoom coils, and the two zoom coils are oppositely arranged on two opposite sides of the circuit board.

[0015] There are two prism carriers, namely a first prism carrier and a second prism carrier located on the side of the first prism carrier, and the first prism carrier is connected to the second prism carrier;

[0016] The nodding magnet is mounted on the first prism carrier, the shaking magnet is mounted on the second prism carrier, and the nodding magnet and the shaking magnet are located on different planes.

[0017] Nodding arc surfaces are respectively provided between the first prism carrier and the inner wall of the base, the nodding arc surface of the first prism carrier and the nodding arc surface of the inner wall of the base are oppositely arranged, and one of the nodding arc surfaces of the first prism carrier and the inner wall of the base is a groove surface and the other nodding arc surface is a convex surface.

[0018] Shaking arc surfaces are respectively provided between the first prism carrier and the second prism carrier, the shaking arc surface of the first prism carrier and the shaking arc surface of the second prism carrier are oppositely arranged, and one of the shaking arc surfaces of the first prism carrier and the second prism carrier is a groove surface and the other shaking arc surface is a convex surface.

[0019] The first prism carrier is connected to the second prism carrier by an adsorption magnet, the adsorption magnet is located on the side of the nodding magnet, and an adsorption force is generated between the adsorption magnet and the nodding magnet.

[0020] A side adsorption iron sheet is arranged outside the circuit board, and the side adsorption iron sheet is located outside the nodding magnet.

[0021] A bottom adsorption iron sheet is arranged on the base, and the bottom adsorption iron sheet is located below the zoom magnet.

[0022] A planar guiding groove and an inclined guiding groove are respectively arranged at the bottom end inside the base, and the planar guiding groove and the inclined guiding groove are arranged oppositely;

[0023] A planar guiding protrusion and an inclined guiding protrusion are respectively arranged at the bottom end of the lens carrier. The planar guiding protrusion abuts against the planar guiding groove and can slide along the optical axis direction in the planar guiding groove, and the inclined guiding protrusion abuts against the inclined guiding groove and can slide along the optical axis direction in the inclined guiding groove.

[0024] The bottom surface of the planar guiding protrusion abuts against the planar guiding groove, and at least one inclined surface of the inclined guiding protrusion abuts against the inclined guiding groove.

[0025] The longitudinal section of the planar guiding protrusion is a rectangular structure, and the longitudinal section of the inclined guiding protrusion is a triangular or trapezoidal structure.

[0026] A lubricating material layer is coated on at least one contact surface between the planar guiding protrusion and the planar guiding groove and at least one contact surface between the inclined guiding protrusion and the inclined guiding groove;

[0027] The lubricating material layer is preferably made of a micro-particle lubricating material, and more preferably made of a micro-particle powder lubricating material.

[0028] Nodding magnet installation grooves and shaking magnet installation grooves are respectively arranged on adjacent outer side surfaces of the prism carrier, a zoom magnet installation groove is arranged on the outer side surface of the lens carrier, and fixing iron sheets are respectively fixedly connected to the nodding magnet installation grooves, the shaking magnet installation grooves and the zoom magnet installation grooves;

[0029] The nodding magnet is located in the nodding magnet installation groove and adsorbs with the corresponding fixing iron sheet;

[0030] The shaking magnet is located in the shaking magnet installation groove and adsorbs with the corresponding fixing iron sheet;

[0031] The zoom magnet is located in the zoom magnet installation groove and adsorbs with the corresponding fixing iron sheet.

[0032] A number of base coil avoidance grooves that are internally and externally connected are respectively provided on the side wall of the base, and the nodding coil, the shaking coil, and the zoom coil are respectively arranged in a circle along the inner wall of a corresponding one of the base coil avoidance grooves;

[0033] Three position sensors are further provided on the inner side of the circuit board. The three position sensors are respectively arranged in a corresponding one of the base coil avoidance grooves, and the three position sensors are respectively located outside the nodding magnet, the shaking magnet, and the zoom magnet.

[0034] Beneficial effects: The present invention has at least one or more of the following advantages:

[0035] 1. Usually, a prism can deflect the light direction. The present invention realizes the rotation of the prism in two different directions by the rotation of the prism carrier in two different directions, thereby changing the irradiation direction of the light; the present invention realizes the zoom operation of the lens by the movement of the lens carrier; by directly integrating a number of coils on the circuit board, the device layout is compact, greatly reducing the assembly cost of the device; the overall layout of the present invention is reasonable and compact, and the distribution of each magnet does not affect each other, so as to reduce the mutual interference problem between adjacent magnets. The overall structure of the present invention is compact and reliable, and the volume is small, which is very suitable for lightweight and miniaturized electronic products.

[0036] 2. Through the design of adsorbing iron sheets on the side and / or adsorbing iron sheets on the bottom, it is opposite to the corresponding magnet and generates an adsorption force, making the connection between adjacent connection structures more stable and reliable, and the reset function can be realized without adding multiple springs or reeds.

[0037] 3. By arranging the cooperation of the planar guiding protrusion and the planar guiding groove, and the cooperation of the inclined guiding protrusion and the inclined guiding groove, when the lens carrier moves along the optical axis direction, a good auxiliary guiding effect is achieved.

[0038] Especially under the adsorption force of the iron sheet adsorbed on the bottom and the zoom magnet, the lens carrier will stably abut against the inner wall of the bottom end of the base, so that the inclined guiding protrusion will abut against the inclined guiding groove. Under the action of the inclined plane, the end face of the inclined guiding protrusion will contact the end face of the inclined guiding groove, realizing the precise positioning between the lens carrier and the base; this design enables a certain amount of small gap to exist between the planar guiding groove and the planar guiding protrusion during production and assembly of the components, which can reduce the production precision of the components to a certain extent, while ensuring the assembly precision of the motor and improving the assembly rate.

[0039] 4. A lubricating material layer is applied to the contact surface between each protrusion and the guiding groove, greatly reducing the sliding friction.

[0040] 5. The installation and positioning of each magnet are realized by the method of adsorbing the fixed iron sheet, and the installation and maintenance are simple and convenient.

[0041] 6. After three position sensors are respectively combined with corresponding magnets, the nodding motion, shaking motion or the position of the movement along the optical axis can be monitored respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic structural diagram of the present invention;

[0043] Figure 2 is Figure 1 the A-A cross-sectional view of

[0044] Figure 3 is Figure 1 the B-B cross-sectional view of

[0045] Figure 4 is Figure 1 the C-C cross-sectional view of

[0046] Figure 5 is Figure 1 the exploded view of

[0047] Figure 6 is Figure 1 the further exploded view of

[0048] Figure 7 is a schematic diagram of the positions among the circuit board, the base and the carrier of the present invention;

[0049] Figure 8 is Figure 7 the exploded view between the circuit board and the base in

[0050] Figure 9 is Figure 7 the exploded view between the base and the carrier in

[0051] Figure 10 is Figure 9 another perspective schematic diagram of

[0052] Figure 11 is Figure 9 another perspective partial schematic diagram of

[0053] Figure 12 is the exploded view of the connection relationship between the lens carrier and the zoom magnet of the present invention;

[0054] Figure 13 is the exploded view of the connection relationship between the prism carrier and the nodding magnet and the shaking magnet of the present invention;

[0055] Figure 14 is Figure 13 another perspective schematic diagram of DETAILED DESCRIPTION OF THE INVENTION

[0056] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to more clearly understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not limitations on the scope of the present invention, but only to illustrate the essential spirit of the technical solution of the present invention.

[0057] In the following description, for the purpose of illustrating various disclosed embodiments, certain specific details are set forth to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail so as not to unnecessarily obscure the description of the embodiments.

[0058] References throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" 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.

[0059] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, words such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0060] Refer to Figures 1 to 6 , an embodiment of the present invention provides a periscope lens driving device, including a housing 1, a base 2, a driving assembly, a carrier, and a circuit board 5. Among them, the driving assembly includes a plurality of magnets and corresponding coils, namely a nodding magnet 31, a shaking magnet 32, a zoom magnet 33, a nodding coil 34, a shaking coil 35, and a zoom coil 36. The carrier includes a prism carrier 41 and a lens carrier 42 located on the right side of the prism carrier 41. The prism carrier 41 is used to mount a prism 91, and the lens carrier 42 is used to mount a lens 92.

[0061] There is a hollow cavity between the outer shell 1 and the base 2. The outer shell 1 is sleeved outside the base 2 to form the hollow cavity. Preferably, the outer shell 1 and the base 2 are connected by buckling to form the hollow cavity. Both the carrier and the driving component are arranged in the hollow cavity. At the top of the outer shell 1, there is a light inlet hole 11 that communicates inside and outside. Light enters the hollow cavity through the light inlet hole 11 and is refracted by the prism 91 on the prism carrier 41 to the lens 92 on the lens carrier 42 on its right side. On the right side surface of the base 2, there is a lens through hole that communicates inside and outside. The prism carrier 41 can rotate respectively around the front-back direction and the up-down direction, so as to make the prism 91 mounted on the prism carrier 41 nod or shake its head. The lens carrier 42 can move in the left-right direction, so as to realize the zoom operation of the lens 92 mounted on the lens carrier 42.

[0062] Specifically, the nodding magnet 31 and the shaking magnet 32 are respectively installed on the adjacent side walls of the prism carrier 41, and the zoom magnet 33 is installed on the lens carrier 42. Refer to Figure 6 、 Figures 8 to 10 ., the nodding magnet 31 is located on the left side surface of the prism carrier 41, the shaking magnet 32 is located on the front side surface and / or the rear side surface of the prism carrier 41, and the zoom magnet 33 is located on the front side surface and / or the rear side surface of the lens carrier 42. On the base 2, there is a circuit board 5, and the nodding coil 34, the shaking coil 35 and the zoom coil 36 are integrated on the circuit board 5. The nodding coil 34 is arranged opposite to the nodding magnet 31, the shaking coil 35 is arranged opposite to the shaking magnet 32, and the zoom coil 36 is arranged opposite to the zoom magnet 33.

[0063] During use, the nodding coil 34, the shaking coil 35 and the zoom coil 36 are respectively powered on through the circuit board 5. By the cooperation of the nodding coil 34 and the nodding magnet 31 inside it, the prism carrier 41 makes a nodding motion around the front-back direction, so as to make the prism 91 mounted on the prism carrier 41 nod together. By the cooperation of the shaking magnet 32 and the shaking coil 35 inside it, the prism carrier 41 makes a shaking motion around the up-down direction, so as to make the prism 91 mounted on the prism carrier 41 shake its head together. By the cooperation of the zoom magnet 33 and the zoom coil 36 inside it, the lens carrier 42 moves in the left-right direction, so as to realize the zoom function of the lens 92 on the lens carrier 42.

[0064] Optionally, the circuit board 5 is an FPC board.

[0065] Optionally, refer to Figures 6 to 8 ., the base 2 is a hollow rectangular frame, and circuit board mounting grooves 21 are respectively arranged on the outer walls of three adjacent sides of the base 2. The circuit board 5 is a circuit board 5 with at least three sides, and the nodding coil 34, the shaking coil 35 and the zoom coil 36 are respectively arranged on the three sides of the circuit board 5. The three sides of the circuit board 5 are respectively arranged in the corresponding one of the circuit board mounting grooves 21.

[0066] Optionally, nodding coils 34, shaking coils 35, and zoom coils 36 are respectively arranged on the inner walls of three sides of the circuit board 5. The positional relationship among the nodding coils 34, the shaking coils 35, and the zoom coils 36 can be determined according to actual requirements. For example, as Figure 6 and Figure 8 shown, the nodding coil 34 is arranged on the inner wall of the left side surface of the circuit board 5, the shaking coil 35 is arranged on the inner wall of the front side surface and / or the rear side surface of the circuit board 5, the zoom coil 36 is arranged on the inner wall of the front side surface and / or the rear side surface of the circuit board 5, and the shaking coil 35 and the zoom coil 36 are arranged side by side with a preset distance therebetween.

[0067] Optionally, when the circuit board 5 is installed in the circuit board installation groove 21, the wiring part of the circuit board 5 extends out of the circuit board installation groove 21 for easy wiring. For example, as Figure 2 , Figure 5 and Figure 7 shown, the wiring part of the circuit board 5 extends out of the right side surface of the circuit board installation groove 21 and extends out of the right side of the housing 1.

[0068] Optionally, the shaking coil 35 is one or more.

[0069] Optionally, there are two shaking coils 35, and the two shaking coils 35 are oppositely arranged on two opposite sides of the circuit board 5, and the nodding coil 34 is located on one side adjacent to both of the two shaking coils 35. For example, as Figure 6 and Figure 8 shown, the nodding coil 34 is arranged on the inner wall of the left side surface of the circuit board 5, and the two shaking coils 35 are oppositely arranged on the inner walls of the front side surface and the rear side surface of the circuit board 5.

[0070] Optionally, the zoom coil 36 is one or more.

[0071] Optionally, there are two zoom coils 36, and the two zoom coils 36 are oppositely arranged on two opposite sides of the circuit board 5. For example, as Figure 6 and Figure 8 shown, the two zoom coils 36 are oppositely arranged on the inner walls of the front side surface and the rear side surface of the circuit board 5.

[0072] Optionally, the prism carrier 41 is one or two, preferably two. Refer to Figure 6 , Figure 9 and Figure 10, the two prism carriers 41 are respectively a first prism carrier 411 and a second prism carrier 412 located on the right side of the first prism carrier 411, and the first prism carrier 411 is connected to the second prism carrier 412. The nodding magnet 31 is mounted on the first prism carrier 411, and the shaking magnet 32 is mounted on the second prism carrier 412. The nodding magnet 31 and the shaking magnet 32 are located on different planes. For example, as Figure 9 shown, the nodding magnet 31 is located on the right side surface of the first prism carrier 411, and the shaking magnet 32 is located on the front side surface and / or the rear side surface of the second prism carrier 412. Of course, the nodding magnet 31 can also be mounted on the second prism carrier 412, and the shaking magnet 32 can be mounted on the first prism carrier 411.

[0073] The prism 91 can be mounted on either the first prism carrier 411 or the second prism carrier 412. As Figure 2 and Figure 5 shown, the prism 91 is mounted on the second prism carrier 412. During use, the nodding magnet 31 cooperates with the nodding coil 34 outside it to cause the first prism carrier 411 to make a nodding motion. When the first prism carrier 411 moves, it drives the second prism carrier 412 and the prism 91 to make nodding motions together. The shaking magnet 32 cooperates with the shaking coil 35 outside it to cause the second prism carrier 412 and the prism 91 thereon to make a shaking motion.

[0074] Optionally, referring to Figure 9 、 Figure 10 and Figure 14 , nodding arc surfaces are provided between the first prism carrier 411 and the inner wall of the base 2. The nodding arc surface 411a of the first prism carrier 411 is arranged opposite to the nodding arc surface 2a of the inner wall of the base 2. One of the nodding arc surfaces of the first prism carrier 411 and the inner wall of the base 2 is a groove surface, and the other is a convex surface.

[0075] As Figure 10 shown, the nodding arc surface 2a of the inner wall of the base 2 is a groove surface, and the nodding arc surface 411a of the first prism carrier 411 is a convex surface.

[0076] Optionally, referring to Figure 13 and Figure 14 , shaking arc surfaces are provided between the first prism carrier 411 and the second prism carrier 412. The shaking arc surface 411b of the first prism carrier 411 is arranged opposite to the shaking arc surface 412b of the second prism carrier 412. One of the shaking arc surfaces of the first prism carrier 411 and the second prism carrier 412 is a groove surface, and the other is a convex surface.

[0077] As Figure 13 shown, the shaking arc surface 412b of the second prism carrier 412 is a convex surface. AsFigure 14 As shown, the swaying arc surface 411b of the first prism carrier 411 is a groove surface.

[0078] Optionally, when the first prism carrier 411 and the second prism carrier 412 are an integral prism carrier 41, nodding arc surfaces are provided between the prism carrier 41 and the inner wall of the base 2. The nodding arc surface of the prism carrier 41 and the nodding arc surface of the inner wall of the base 2 are arranged opposite to each other, one of which is a groove surface and the other is a convex surface.

[0079] Swaying arc surfaces are provided between the prism carrier 41 and the inner wall of the base 2. The swaying arc surface of the prism carrier 41 and the swaying arc surface of the inner wall of the base 2 are arranged opposite to each other, one of which is a groove surface and the other is a convex surface.

[0080] Optionally, referring to Figure 13 and Figure 14 , the first prism carrier 411 and the second prism carrier 412 are connected by an adsorption magnet 413. The adsorption magnet 413 is located on the right side of the nodding magnet 31, and an adsorption force is generated between the adsorption magnet 413 and the nodding magnet 31. The first prism carrier 411 and the second prism carrier 412 are connected by the adsorption magnet 413, and the connection structure is more stable and reliable.

[0081] Optionally, the second prism carrier 412 is connected to the side surface of the first prism carrier 411, that is, as shown in Figure 13 , an adsorption magnet installation groove 4121 is provided on the left side surface of the second prism carrier 412, and the adsorption magnet 413 is arranged in the adsorption magnet installation groove 4121.

[0082] Optionally, a fixed iron sheet 416 is fixedly connected in the adsorption magnet installation groove 4121, and the adsorption magnet 413 is located in the adsorption magnet installation groove 4121 and adsorbs to the fixed iron sheet 416.

[0083] Optionally, the adsorption magnet 413 is located outside the fixed iron sheet 416 so as not to affect the generation of the adsorption force between the adsorption magnet 413 and the nodding magnet 31.

[0084] Optionally, referring to Figure 6 and Figure 8 , a side adsorption iron sheet 61 is provided outside the circuit board 5. The side adsorption iron sheet 61 is located outside the nodding magnet 31. The side adsorption iron sheet 61 corresponds to the nodding magnet 31 and generates an adsorption force, making the connection structure between the prism carrier 41 and the base 2 more stable and reliable.

[0085] Optionally, referring to Figure 6 and Figure 9, a bottom adsorption iron sheet 62 is provided on the base 2, and the bottom adsorption iron sheet 62 is located below the zoom magnet 33. The bottom adsorption iron sheet 62 corresponds to the zoom magnet 33 and generates an adsorption force, making the connection structure between the lens carrier 42 and the base 2 more stable and reliable.

[0086] When there are two zoom coils 36, the corresponding zoom magnets 33 are also two, and then the bottom adsorption iron sheets 62 are also two. One bottom adsorption iron sheet 62 is located below the corresponding one zoom magnet 33.

[0087] Optionally, referring to Figure 11 , an adsorption iron sheet installation groove 24 is provided on the base 2, and the bottom adsorption iron sheet 62 is arranged in the adsorption iron sheet installation groove 24.

[0088] When there are two bottom adsorption iron sheets 62, two adsorption iron sheet installation grooves 24 are provided on the base 2 for installing the two bottom adsorption iron sheets 62.

[0089] Optionally, referring to Figure 11 and Figure 12 , a planar guiding groove 22 and an inclined guiding groove 23 are respectively provided at the bottom end inside the base 2, and the planar guiding groove 22 and the inclined guiding groove 23 are oppositely arranged. For example, as shown in Figure 11 , the planar guiding groove 22 and the inclined guiding groove 23 are oppositely arranged along the front-back direction.

[0090] At the bottom end of the lens carrier 42, a planar guiding protrusion 422 and an inclined guiding protrusion 423 are respectively arranged along the front-back direction, and the length directions of the planar guiding protrusion 422 and the inclined guiding protrusion 423 are both in the left-right direction. The planar guiding protrusion 422 abuts in the planar guiding groove 22 and can slide in the planar guiding groove 22 along the left-right direction, and the inclined guiding protrusion 423 abuts in the inclined guiding groove 23 and can slide in the inclined guiding groove 23 along the left-right direction.

[0091] By arranging the cooperation of the planar guiding protrusion 422 and the planar guiding groove 22, and the cooperation of the inclined guiding protrusion 423 and the inclined guiding groove 23, when the lens carrier 42 moves in the left-right direction, a better auxiliary guiding effect is achieved.

[0092] Optionally, two planar guiding grooves 22 and two inclined guiding grooves 23 are respectively provided at the bottom end inside the base 2. The two planar guiding grooves 22 are arranged side by side along the left-right direction, the two inclined guiding grooves 23 are arranged side by side along the left-right direction, and one planar guiding groove 22 and the corresponding one inclined guiding groove 23 are oppositely arranged along the front-back direction.

[0093] Two planar guiding protrusions 422 and two inclined-plane guiding protrusions 423 are respectively arranged at the bottom end of the lens carrier 42 to cooperate with two planar guiding grooves 22 and two inclined-plane guiding grooves 23. In some embodiments, a strip-shaped planar guiding protrusion 422 and a strip-shaped inclined-plane guiding protrusion 423 are respectively arranged at the bottom end of the lens carrier 42 to cooperate with two juxtaposed planar guiding grooves 22 and two juxtaposed inclined-plane guiding grooves 23.

[0094] Optionally, the bottom surface of the planar guiding protrusion 422 abuts against the planar guiding groove 22, that is, the surface of the planar guiding protrusion 422 that abuts against the planar guiding groove 22 is a surface parallel to the bottom surface of the lens carrier 42.

[0095] At least one inclined surface of the inclined-plane guiding protrusion 423 abuts against the inclined-plane guiding groove 23. That is, the surface of the inclined-plane guiding protrusion 423 that abuts against the inclined-plane guiding groove 23 is a surface intersecting with the bottom surface of the lens carrier 42.

[0096] When the inclined-plane guiding protrusion 423 has only one inclined surface, for example, when the shape of the inclined-plane guiding protrusion 423 is a right triangular prism with a right-angled triangle on the side, its inclined surface abuts against the inclined-plane guiding groove 23.

[0097] When the inclined-plane guiding protrusion 423 has at least two inclined surfaces, for example, when the shape of the inclined-plane guiding protrusion 423 is a right quadrangular prism with a trapezoid on the side, both inclined surfaces on both sides abut against the inclined-plane guiding groove 23.

[0098] Optionally, the longitudinal section of the planar guiding protrusion 422 is a rectangular structure, and the longitudinal section of the inclined-plane guiding protrusion 423 is a triangular or trapezoidal structure.

[0099] Optionally, the shape of the planar guiding protrusion 422 is a cuboid. The shape of the inclined-plane guiding protrusion 423 is a right prism with more than 3 sides on the side.

[0100] As Figure 11 shown, the shape of the planar guiding protrusion 422 is a cuboid, and the shape of the inclined-plane guiding protrusion 423 is a right quadrangular prism.

[0101] Optionally, a lubricating material layer 7 is applied on at least one contact surface between the planar guiding protrusion 422 and the planar guiding groove 22, and on at least one contact surface between the inclined-plane guiding protrusion 423 and the inclined-plane guiding groove 23.

[0102] The design of the lubricating material layer 7 can reduce the friction when the lens carrier 42 slides in the left-right direction.

[0103] The lubricating material layer 7 can be applied on each contact surface of the planar guiding protrusion 422 and the planar guiding groove 22. Or the lubricating material layer 7 can be only applied on the contact surface of the planar guiding groove 22.

[0104] A lubricating material layer 7 can be applied to each contact surface of the inclined plane guiding protrusion 423 and the inclined plane guiding groove 23. Alternatively, the lubricating material layer 7 can be only applied to the contact surface of the inclined plane guiding groove 23.

[0105] Optionally, the lubricating material layer 7 is a lubricating material layer 7 made by applying micro-particle lubricating material to the contact surface. Preferably, the lubricating material layer 7 is a lubricating material layer 7 made by applying powder lubricating material to the contact surface. More preferably, the lubricating material layer 7 is a lubricating material layer 7 made by applying micro-particle powder lubricating material to the contact surface. The lubricating material layer 7 can also be made of other existing lubricating materials.

[0106] Optionally, when a bottom adsorption iron sheet 62 is provided on the base 2, the bottom adsorption iron sheet 62 is located between the two planar guiding grooves 22 and / or the two inclined plane guiding grooves 23.

[0107] When there are two bottom adsorption iron sheets 62, one bottom adsorption iron sheet 62 is located between the two planar guiding grooves 22, and the other bottom adsorption iron sheet 62 is located between the two inclined plane guiding grooves 23.

[0108] Under the adsorption force between the bottom adsorption iron sheet 62 and the zoom magnet 33, the lens carrier 42 will stably abut against the inner wall of the bottom end of the base 2, so that the inclined plane guiding protrusion 423 will abut against the inclined plane guiding groove 23. Under the action of the inclined plane, the end face of the inclined plane guiding protrusion 423 will contact the end face of the inclined plane guiding groove 23, realizing the precise positioning between the lens carrier 42 and the base 2; this design enables a certain amount of tiny gaps to exist between the planar guiding grooves 22 and the planar guiding protrusions 422 during the production and assembly of the components, which can reduce the production precision of the components to a certain extent, while ensuring the assembly precision of the motor and improving the assembly rate.

[0109] Optionally, referring to Figure 13 and Figure 14 , a nodding magnet mounting groove 414 and a shaking magnet mounting groove 415 are respectively provided on adjacent outer side surfaces of the prism carrier 41. Referring to Figure 12 , a zoom magnet mounting groove 421 is provided on the outer side surface of the lens carrier 42. A fixed iron sheet 37 is fixedly connected to the inner wall of the nodding magnet mounting groove 414, a fixed iron sheet 38 is fixedly connected to the inner wall of the shaking magnet mounting groove 415, and a fixed iron sheet 39 is fixedly connected to the inner wall of the zoom magnet mounting groove 421.

[0110] The nodding magnet 31 is located in the nodding magnet mounting groove 414 and adsorbs to the corresponding fixed iron sheet 37. The shaking magnet 32 is located in the shaking magnet mounting groove 415 and adsorbs to the corresponding fixed iron sheet 38. The zoom magnet 33 is located in the zoom magnet mounting groove 421 and adsorbs to the corresponding fixed iron sheet 39.

[0111] The positioning of each magnet is achieved through respective fixing iron sheets. Each magnet is preferably located outside the corresponding fixing iron sheet so as not to affect the cooperation between each magnet and the corresponding coil.

[0112] Optionally, when the prism carrier 41 includes a first prism carrier 411 and a second prism carrier 412, the nodding magnet mounting groove 414 is provided on the outer side surface of the first prism carrier 411, and the shaking magnet mounting groove 415 is provided on the outer side surface of the second prism carrier 412. For example, as Figure 13 shown, the nodding magnet mounting groove 414 is provided on the left side surface of the first prism carrier 411, and the shaking magnet mounting groove 415 is provided on the front side surface and / or the rear side surface of the second prism carrier 412.

[0113] Optionally, referring to Figure 8 、 Figure 9 and Figure 10 , a plurality of base coil avoidance grooves communicating inside and outside are respectively provided on the side wall of the base 2, namely the base coil avoidance groove 25, the base coil avoidance groove 26 and the base coil avoidance groove 27. The nodding coil 34 is arranged in a circle along the inner wall of the base coil avoidance groove 25, the shaking coil 35 is arranged in a circle along the inner wall of the base coil avoidance groove 26, and the zoom coil 36 is arranged in a circle along the inner wall of the base coil avoidance groove 27.

[0114] Referring to Figure 2 、 Figure 4 、 Figure 6 and Figure 8 , three position sensors are further provided on the inner side of the circuit board 5. The three position sensors are respectively a position sensor 81, a position sensor 82 and a position sensor 83. The position sensor 81 is arranged in the base coil avoidance groove 25, and the position sensor 81 is located outside the nodding magnet 31. The position sensor 82 is arranged in the base coil avoidance groove 26, and the position sensor 82 is located outside the shaking magnet 32. The position sensor 83 is arranged in the base coil avoidance groove 27, and the position sensor 83 is located outside the zoom magnet 33.

[0115] When there are two or more shaking magnets 32, the position sensor 82 is arranged in the base coil avoidance groove 26 outside any one of the shaking magnets 32.

[0116] When there are two or more zoom magnets 33, the position sensor 83 is arranged in the base coil avoidance groove 27 outside any one of the zoom magnets 33.

[0117] After the position sensor cooperates with the corresponding magnet, the movement position can be monitored.

[0118] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A periscope lens driving device, comprising a housing, a base, a driving assembly, a carrier and a circuit board. There is a hollow cavity between the housing and the base, and both the carrier and the driving assembly are arranged in the hollow cavity; It is characterized in that The carrier includes a prism carrier and a lens carrier located on the side of the prism carrier; The driving assembly includes a number of magnets and corresponding coils, namely a nodding magnet, a shaking magnet, a zoom magnet, a nodding coil, a shaking coil and a zoom coil respectively; The nodding magnet and the shaking magnet are respectively installed on adjacent side walls of the prism carrier, and the zoom magnet is installed on the lens carrier; The circuit board is arranged on the base, and the nodding coil, the shaking coil and the zoom coil are integrated on the circuit board. The nodding coil is arranged opposite to the nodding magnet, the shaking coil is arranged opposite to the shaking magnet, and the zoom coil is arranged opposite to the zoom magnet; The base is a hollow rectangular frame, and circuit board mounting grooves are respectively arranged on the outer walls of three adjacent sides of the base; The circuit board is a circuit board with at least three sides, and the nodding coil, the shaking coil and the zoom coil are respectively arranged on three sides of the circuit board. The three sides of the circuit board are respectively arranged in a corresponding one of the circuit board mounting grooves; There are two shaking coils, and the two shaking coils are arranged opposite to each other on two opposite sides of the circuit board. The nodding coil is located on a side adjacent to both of the two shaking coils; There are two zoom coils, and the two zoom coils are arranged opposite to each other on two opposite sides of the circuit board; There are two prism carriers, namely a first prism carrier and a second prism carrier located on the side of the first prism carrier, and the first prism carrier is connected to the second prism carrier; The nodding magnet is installed on the first prism carrier, the shaking magnet is installed on the second prism carrier, and the nodding magnet and the shaking magnet are on different planes; Nodding arc surfaces are respectively arranged between the first prism carrier and the inner wall of the base. The nodding arc surface of the first prism carrier is arranged opposite to the nodding arc surface of the inner wall of the base. One of the nodding arc surfaces of the first prism carrier and the inner wall of the base is a groove surface, and the other is a convex surface; Shaking arc surfaces are respectively arranged between the first prism carrier and the second prism carrier. The shaking arc surface of the first prism carrier is arranged opposite to the shaking arc surface of the second prism carrier. One of the shaking arc surfaces of the first prism carrier and the second prism carrier is a groove surface, and the other is a convex surface.

2. The periscope lens driving device according to claim 1, wherein The first prism carrier and the second prism carrier are connected by an adsorption magnet. The adsorption magnet is located on the side of the nodding magnet, and an adsorption force is generated between the adsorption magnet and the nodding magnet.

3. The periscope lens driving device according to claim 1, characterized in that, A side adsorption iron sheet is arranged outside the circuit board, and the side adsorption iron sheet is located outside the nodding magnet; A bottom adsorption iron sheet is arranged on the base, and the bottom adsorption iron sheet is located below the zoom magnet.

4. The periscope lens driving device according to any one of claims 1 to 3, characterized in that, At the bottom end inside the base, a planar guiding groove and an inclined guiding groove are respectively provided, and the planar guiding groove and the inclined guiding groove are oppositely arranged; At the bottom end of the lens carrier, a planar guiding protrusion and an inclined guiding protrusion are respectively provided. The planar guiding protrusion abuts against the planar guiding groove and can slide along the optical axis direction in the planar guiding groove, and the inclined guiding protrusion abuts against the inclined guiding groove and can slide along the optical axis direction in the inclined guiding groove.

5. The periscope lens driving device according to claim 4, wherein, A lubricating material layer is coated on at least one contact surface between the planar guiding protrusion and the planar guiding groove and at least one contact surface between the inclined guiding protrusion and the inclined guiding groove.

6. The periscope lens driving device according to claim 5, wherein The lubricating material layer is made of a micro-particle lubricating material.

7. The periscope lens driving device according to claim 6, characterized in that, The lubricating material layer is made of a micro-particle powder lubricating material.

8. The periscope lens driving device according to claim 1, wherein, On the adjacent outer side surfaces of the prism carrier, a nodding magnet mounting groove and a shaking magnet mounting groove are respectively provided. On the outer side surface of the lens carrier, a zoom magnet mounting groove is provided. Fixed iron sheets are respectively fixedly connected to the nodding magnet mounting groove, the shaking magnet mounting groove and the zoom magnet mounting groove; The nodding magnet is located in the nodding magnet mounting groove and adsorbs to the corresponding fixed iron sheet; The shaking magnet is located in the shaking magnet mounting groove and adsorbs to the corresponding fixed iron sheet; The zoom magnet is located in the zoom magnet mounting groove and adsorbs to the corresponding fixed iron sheet; And / or, a plurality of base coil avoidance grooves communicating inside and outside are respectively provided on the side wall of the base. The nodding coil, the shaking coil and the zoom coil are respectively arranged in a circle along the inner wall of a corresponding one of the base coil avoidance grooves; And / or, three position sensors are further provided on the inner side of the circuit board. The three position sensors are respectively arranged in a corresponding one of the base coil avoidance grooves, and the three position sensors are respectively located outside the nodding magnet, the shaking magnet and the zoom magnet.

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