Lens driving device

Abstract

The utility model provides a lens driving device, which comprises a base, a lens carrier, a prism carrier, a lens carrier driving mechanism and a prism carrier driving mechanism, the lens carrier and the prism carrier are sequentially arranged in the base, the lens carrier driving mechanism drives the lens carrier to move in the first direction, and the prism carrier driving mechanism drives the prism carrier to move in the second direction and the third direction; the prism carrier comprises a first prism carrier and a second prism carrier, the first prism carrier is arranged on the other side of the lens carrier, and the second prism carrier is arranged between the first prism carrier and the lens carrier; a nodding fulcrum structure is arranged between one end of the first prism carrier and the inner end wall of one end of the base to assist the first prism carrier to move around a second direction; and a head shaking fulcrum structure is arranged between one end of the second prism carrier and the other end of the first prism carrier to assist the second prism carrier to move around a third direction. The lens driving device provided by the utility model improves the stability of the whole structure and the movement in the corresponding direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field, especially a lens drive device. BACKGROUND

[0002] With the development of science and technology, nowadays many electronic devices (for example, smart phones or digital cameras) have the functions of taking pictures or recording videos. These electronic devices are increasingly popular and are developing towards convenient and thin designs to provide users with more choices.

[0003] Among them, the lens drive device is used in light design because it can greatly reduce the thickness and weight of the device as a whole. The lens drive device structure usually includes two parts, namely the lens part and the prism part, wherein the prism part is arranged at the rear end, and the imaging chip is arranged at the front end of the lens part. The light is reflected by the prism part to change the path of the light to the lens part, and then zoomed through the lens part to the imaging chip.

[0004] The existing lens drive device has the following problems when implementing prism movement:

[0005] Friction resistance and wear problem: the contact surface of the fulcrum between the prism carriers is relatively concentrated, and long-term high-frequency movement can easily cause local wear, affecting the action accuracy and equipment life.

[0006] Insufficient stability: only relying on a single stability mode of magnetic adsorption, the components are easy to cause prism carrier instability due to ball deviation or disengagement during high-speed movement or in a high-vibration environment, resulting in optical path deviation and affecting the reliability of the equipment. INVENTION CONTENTS

[0007] The technical problem to be solved by the utility model is to provide a lens drive device to improve the overall structure of the lens drive device and the stability of movement in the corresponding direction.

[0008] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0009] A lens drive device, comprising a base, a lens carrier, a prism carrier, a lens carrier driving mechanism and a prism carrier driving mechanism; the lens carrier and the prism carrier are sequentially arranged in the base along a first direction, the lens carrier driving mechanism drives the lens carrier to move along the first direction, and the prism carrier driving mechanism drives the prism carrier to move around a second direction and a third direction, the first direction is perpendicular to the second direction and located in the same plane, and the third direction is perpendicular to the plane;

[0010] The prism carrier includes a first prism carrier and a second prism carrier, the first prism carrier is arranged on the other side of the lens carrier along the first direction, and the second prism carrier is arranged between the first prism carrier and the lens carrier along the first direction.

[0011] One end of the first prism carrier and the inner end wall of one end of the base are provided with a nodding fulcrum structure, one end of the second prism carrier and the other end of the first prism carrier are provided with a shaking fulcrum structure, and the nodding fulcrum structure and the shaking fulcrum structure are cross structures, the nodding fulcrum structure is used to assist the first prism carrier to move around the second direction, and the shaking fulcrum structure is used to assist the second prism carrier to move around the third direction.

[0012] In one embodiment, the nodding fulcrum structure includes a nodding roller and a nodding ball, the two sides of the nodding roller and the two sides of the nodding ball are respectively abutted between the end face of one end of the first prism carrier and the inner end wall of one end of the base, and the first prism carrier moves around the second direction with the nodding ball as the nodding fulcrum and the nodding roller as the nodding guide.

[0013] In one embodiment, the nodding ball and the nodding roller are arranged on the end face of one end of the first prism carrier along the second direction, and the axial direction of the nodding roller is parallel to the second direction.

[0014] In one embodiment, the first prism carrier one end side wall is provided with a nodding roller groove and a nodding ball groove along the second direction.

[0015] In one embodiment, the shaking fulcrum structure includes a shaking roller and a shaking ball, the two sides of the shaking roller and the two sides of the shaking ball are respectively abutted between the end face of one end of the second prism carrier and the end face of the other end of the first prism carrier, and the second prism carrier moves around the third direction with the shaking ball as the shaking fulcrum and the shaking roller as the shaking guide.

[0016] In one embodiment, the shaking roller and the shaking ball are arranged on the end face of the other end of the first prism carrier along the third direction, and the axial direction of the shaking roller is parallel to the third direction.

[0017] In one embodiment, the end face of the other end of the first prism carrier is provided with a shaking roller groove and a shaking ball groove along the third direction.

[0018] In one embodiment, the lens driving device further comprises a magnetic assembly arranged at one end of the second prism carrier and penetrating through the first prism carrier, the magnetic assembly being used to provide a magnetic attraction force for mounting the first prism carrier and the second prism carrier on the inner end wall of one end of the base;

[0019] and / or a zoom guiding member comprising a support step arranged at the bottom end of the lens carrier and a guiding rod arranged in the base, the guiding rod cooperating with the support step to guide the zoom action of the lens carrier.

[0020] In one embodiment, the prism carrier driving mechanism comprises a nodding coil arranged on the inner side wall of one side of the base, a panning coil arranged on the inner side wall of the other side of the base, a nodding magnet arranged on the outer side wall of one side of the second prism carrier, and a panning magnet arranged on the outer side wall of the other side of the second prism carrier, the nodding coil being arranged opposite to the nodding magnet, and the panning coil being arranged opposite to the panning magnet.

[0021] In one embodiment, the lens carrier driving mechanism comprises a zoom coil arranged on the inner side wall of one side of the base and a zoom magnet arranged on the outer side wall of the lens carrier, the zoom coil being arranged opposite to the zoom magnet.

[0022] The above scheme of the utility model has at least the following beneficial effects:

[0023] The lens driving device provided by the above-described solution of this utility model includes a base, a lens carrier, a prism carrier, a lens carrier driving mechanism, and a prism carrier driving mechanism. The lens carrier and the prism carrier are sequentially arranged in the base along a first direction. The lens carrier driving mechanism drives the lens carrier to move along the first direction, and the prism carrier driving mechanism drives the prism carrier to move around a second direction and a third direction. The first direction is perpendicular to the second direction and lies in the same plane, and the third direction is perpendicular to the plane. The prism carrier includes a first prism carrier and a second prism carrier. The first prism carrier is arranged along the first direction on the other side of the lens carrier, and the second prism carrier is arranged along the first direction between the first prism carrier and the lens carrier. A nodding fulcrum structure is provided between one end of the first prism carrier and the inner wall of one end of the base, and a shaking fulcrum structure is provided between one end of the second prism carrier and the other end of the first prism carrier. The nodding fulcrum structure and the shaking fulcrum structure form a cross structure. The nodding fulcrum structure is used to assist the first prism carrier to move around the second direction, and the shaking fulcrum structure is used to assist the second prism carrier to move around the third direction. The lens driving device provided by this utility model has a more stable and compact overall structure, and can improve the stability of the lens device in the corresponding direction. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the lens driving device provided in an embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of a lens driving device provided in an optional embodiment of this utility model;

[0026] Figure 3 This is an exploded view from another perspective of the lens driving device provided in an optional embodiment of this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the base provided in an optional embodiment of the present utility model;

[0028] Figure 5 This is a top view of the base provided in an optional embodiment of the present invention.

[0029] Figure 6 This is a cross-sectional view of a lens driving device provided in an optional embodiment of the present invention;

[0030] Figure 7 This is a cross-sectional view from another perspective of the lens driving device provided in an optional embodiment of the present invention;

[0031] Figure 8 This is an exploded view of the lens carrier and prism carrier installed according to an optional embodiment of this utility model;

[0032] Figure 9 is a perspective structural schematic view of a prism carrier provided by an optional embodiment of the utility model, and

[0033] Figure 10 is a schematic view of the positional relationship between the prism carrier and the head-shaking fulcrum structure and the head-nodding fulcrum structure provided by an optional embodiment of the utility model, and

[0034] Figure 11 is another perspective structural schematic view of Figure 10 ;

[0035] Figure 12 is an exploded view of Figure 10 ;

[0036] Figure 13 is a perspective structural schematic view of the installation of the first prism carrier and the head-shaking fulcrum structure provided by an optional embodiment of the utility model, and

[0037] Figure 14 is an exploded view of the positional relationship between the first prism carrier and the head-shaking fulcrum structure and the head-nodding fulcrum structure provided by an optional embodiment of the utility model, and

[0038] Figure 15 is a perspective structural schematic view of the installation of the first prism carrier and the head-nodding fulcrum structure provided by an optional embodiment of the utility model, and

[0039] Figure 16 is an exploded view of Figure 15 ;

[0040] Explanation of reference numerals:

[0041] 100, capacitive rocker device;

[0042] 1, base; 11, guide groove; 12, guide rod; 21, first prism carrier; 211, head-nodding roller groove; 212, head-nodding ball groove; 213, head-shaking roller groove; 214, head-shaking ball groove; 215, avoiding opening; 22, second prism carrier; 221, head-nodding magnet mounting groove; 222, head-shaking magnet mounting groove; 223, adsorbing magnet mounting groove; 3, lens carrier; 31, support step; 41, head-nodding roller; 42, head-nodding ball; 51, head-shaking roller; 52, head-shaking ball; 61, head-nodding magnet; 62, head-nodding coil; 71, head-shaking magnet; 72, head-shaking coil; 81, zooming magnet; 82, zooming coil; 91, adsorbing magnet; 92, adsorbing iron sheet; 10, FPC board. DETAILED DESCRIPTION

[0043] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure can be embodied in various forms without being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0044] In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of various disclosed embodiments. It will be appreciated, however, that embodiments can be practiced in other embodiments and can be practiced without one or more of the specific details. In other instances, well-known structures and techniques have not been shown or described in order to avoid unnecessarily obscuring the description of the embodiments.

[0045] 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 the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0046] In the following description, for the purpose of clarity, directional terms are used to describe the structure and working of the present disclosure, but the words "front", "back", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient language and should not be interpreted as limiting words.

[0047] In the following description, the first direction is defined as the direction along the optical axis of the lens, the second direction is the direction perpendicular to the first direction and parallel to the lower surface of the base 1, and the third direction is the direction perpendicular to the first direction and the second direction, i.e. the third direction is the direction of the plumb line when the base 1 is normally placed, that is, the coordinate system is established with the third direction as the Z axis and the first direction as the X axis, then the second direction is the Y axis.

[0048] Referring to Figures 1 to 7The utility model discloses an embodiment proposes a lens driving device 100, including base 1, lens carrier 3, prism carrier, lens carrier drive mechanism and prism carrier drive mechanism, lens carrier 3 and prism carrier are sequentially arranged in base 1 along the first direction, and lens carrier drive mechanism drives lens carrier 3 and moves along the first direction, and prism carrier drive mechanism drives prism carrier and moves around the second direction and third direction, the first direction is perpendicular with the second direction and is in the same plane, and the third direction is perpendicular with the plane. Prism carrier includes first prism carrier 21 and second prism carrier 22, and first prism carrier 21 is arranged on the other side of lens carrier 3 along the first direction, and second prism carrier 22 is arranged between first prism carrier 21 and lens carrier 3 along the first direction. The end-to-end end wall between the end of first prism carrier 21 and the end of base 1 is provided with a nodding fulcrum structure, and the end of second prism carrier 22 and the other end of first prism carrier 21 are provided with a shaking fulcrum structure, and the nodding fulcrum structure and the shaking fulcrum structure are cross structures, the nodding fulcrum structure is used to assist first prism carrier 21 and moves around the second direction, and the shaking fulcrum structure is used to assist second prism carrier 22 and moves around the third direction.

[0049] As shown in the embodiment, Figures 4 to 5 The base 1 is in the form of a box, and has a cavity for mounting various components; the lens carrier 3 is used for mounting a lens (not shown in the figure), and the second prism carrier 22 is used for mounting a prism (not shown in the figure); here, the lens carrier 3 is arranged at one end of the base 1, and preferably, a lens avoiding hole is formed at the end of the base 1; the first prism carrier 21 is arranged at the other end of the base 1, and the second prism carrier 22 is arranged between the first prism carrier 21 and the lens carrier 3; the prism carrier drive mechanism drives the first prism carrier 21 and the second prism carrier 22 to move around the second direction (to perform a nodding action) and the second prism carrier 22 to move around the third direction (to perform a shaking action) respectively, so as to drive the prism to move and change the direction of light irradiation;

[0050] Here, by arranging the nodding fulcrum structure, the frictional resistance of the nodding action of the first prism carrier 21 and the second prism carrier 22 relative to the base 1 can be reduced; by arranging the shaking fulcrum structure, the frictional resistance of the shaking action of the second prism carrier 22 relative to the first prism carrier 21 can be reduced; in addition, the nodding fulcrum structure and the shaking fulcrum structure are arranged in the form of a cross structure, the nodding fulcrum structure is arranged along the horizontal direction of the cross structure, and the shaking fulcrum structure is arranged along the vertical direction of the cross structure, so as to limit the directions of the nodding and shaking actions and avoid the directions of the actions from deviating, thereby ensuring the accuracy of the actions and improving the reliability of the overall movement of the device.

[0051] As shown in the embodiment, Figures 9 to 12As shown, in an optional embodiment of the present application, the nodding fulcrum structure comprises a nodding roller 41 and a nodding ball 42, the two sides of the nodding roller 41 and the two sides of the nodding ball 42 abut between the end face of one end of the first prism carrier 21 and the inner end wall of one end of the base 1, the first prism carrier 21 moves around the second direction with the nodding ball 42 as the nodding fulcrum and the nodding roller 41 as the nodding guide.

[0052] In this embodiment, the nodding roller 41 and the nodding ball 42 are both arranged between the first prism carrier 21 and the inner end wall of one end of the base 1; in an implementable example, the nodding ball 42 and the nodding roller 41 are arranged on the end face of one end of the first prism carrier 21 along the second direction, that is, the nodding ball 42 and the nodding roller 41 are arranged along the same line, and the axial direction of the nodding roller 41 is parallel to the second direction.

[0053] By arranging the nodding roller 41 and using the nodding roller 41 as a guide, the first prism carrier 21 is guided to move around the second direction when nodding, thereby ensuring the accuracy of the direction when nodding and improving the reliability of the overall movement of the device; in addition, the nodding roller 41 is arranged on one side of the nodding ball 42 along the same direction, which can increase the contact point position of the contact surface, ensure the stability of the nodding action, reduce the wear of the ball when only the ball structure is arranged, and the nodding roller 41 is also more convenient to assemble compared with the ball structure; on the other hand, the nodding roller 41 can also assist the nodding movement, further reducing the friction force when nodding.

[0054] Here, the number and position of the nodding roller 41 and the nodding ball 42 are not limited, and when the nodding roller 41 and the nodding ball 42 are arranged, only the one-to-one correspondence between the number of the nodding roller 41 and the nodding ball 42 and the arrangement of the two along the same line in the second direction are required.

[0055] Preferably, the nodding roller 41 and the nodding ball 42 can be separate components, or can be integrally formed with the end face of one end of the first prism carrier 21 or the inner end wall of one end of the base 1.

[0056] Preferably, in this embodiment, the nodding ball 42 can be replaced by a nodding roller structure to further increase the contact point position and limit the direction, further ensuring the accuracy and reliability of the nodding action.

[0057] Referring to Figures 10 to 16In an optional embodiment of this utility model, a nodding roller groove 211 and a nodding ball groove 212 are spaced apart along the second direction on the end face of one end of the first prism carrier 21. After the nodding ball 42 and the nodding roller 41 contact the inner end wall of one end of the base 1, they form a nodding fulcrum structure, which can reduce the friction of the nodding action when the second prism carrier 22 and the first prism carrier 21 nod relative to the base 1.

[0058] Here, the sizes of the nodding roller groove 211 and the nodding ball groove 212 are matched with the sizes of the nodding roller 41 and the nodding ball 42, respectively, and correspond to the positions of the nodding roller 41 and the nodding ball 42, so as to ensure the smoothness and stability of the nodding roller 41 and the nodding ball 42 during the auxiliary movement.

[0059] Preferably, the nodding ball groove 212 is designed as a triangular groove, so that the contact surface between the nodding ball 42 and the first prism carrier 21 is 3, thereby ensuring the stability when the nodding ball 42 abuts against the second prism carrier 22. At the same time, the triangular groove, in conjunction with the nodding ball 42, can also achieve positioning.

[0060] like Figures 9 to 12 As shown, in an optional embodiment of this utility model, the swaying fulcrum structure includes a swaying roller 51 and a swaying ball 52. The two sides of the swaying roller 51 and the two sides of the swaying ball 52 respectively abut against the end face of one end of the second prism carrier 22 and the end face of the other end of the first prism carrier 21. The second prism carrier 22 moves around a third direction with the swaying ball 52 as the swaying fulcrum and the swaying roller 51 as the swaying guide.

[0061] In this embodiment, the oscillating roller 51 and the oscillating ball 52 are both disposed between the end face of one end of the second prism carrier 22 and the end face of the other end of the first prism carrier 21. In one feasible example, the oscillating roller 51 and the oscillating ball 52 are arranged at intervals along a third direction on the end face of the other end of the first prism carrier 21, that is, the oscillating ball 52 and the oscillating roller 51 are arranged along the same straight line, and the axial direction of the oscillating roller 51 is parallel to the third direction.

[0062] By setting a swaying roller 51 and using it as a guide, the second prism carrier 22 is guided to move around a second direction during the swaying motion, thereby ensuring the accuracy of the swaying motion and improving the overall reliability of the device's movement. In addition, setting the swaying roller 51 along the same direction on one side of the swaying ball 52 can, on the one hand, increase the number of contact points on the contact surface, ensuring the stability of the swaying motion and reducing the wear of the balls when only a ball structure is set; on the other hand, the swaying roller 51 can also assist the swaying motion, further reducing the friction during the swaying motion.

[0063] Here, the number and position of the head-rolling rollers 51 and the head-rolling balls 52 are not limited, and when the head-rolling rollers 51 and the head-rolling balls 52 are arranged, it is only required to ensure that the head-rolling rollers 51 and the head-rolling balls 52 are one-to-one corresponding and arranged along the same straight line in the third direction.

[0064] Preferably, the head-rolling rollers 51 and the head-rolling balls 52 can be separate components, or can be integrally formed with the end face of the other end of the first prism carrier 21 or the end face of one end of the second prism carrier 22.

[0065] Preferably, in this embodiment, the head-rolling balls 52 can also be replaced by a head-rolling roller structure to further increase the contact point position and limit the direction, and further ensure the accuracy and reliability of the head-rolling action.

[0066] Referring to Figures 10 to 16 In an optional embodiment of the utility model, the end face of the other end of the first prism carrier 21 is provided with head-rolling roller grooves 213 and head-rolling ball grooves 214 spaced apart along the third direction. The head-rolling rollers 51 and the head-rolling balls 52 are respectively in contact with the end face of one end of the second prism carrier 22 to form a head-rolling fulcrum structure, which can reduce the frictional resistance when the second prism carrier 22 performs a head-rolling action relative to the first prism carrier 21.

[0067] Here, the sizes of the head-rolling roller grooves 213 and the head-rolling ball grooves 214 are matched with the sizes of the head-rolling rollers 51 and the head-rolling balls 52 respectively, and the positions of the head-rolling roller grooves 213 and the head-rolling ball grooves 214 correspond to the positions of the head-rolling rollers 51 and the head-rolling balls 52 respectively, so as to ensure the smoothness and stability of the head-rolling rollers 51 and the head-rolling balls 52 during auxiliary movement.

[0068] Preferably, the head-rolling ball grooves 214 are designed as triangular grooves, so that the contact surface of the head-rolling balls 52 with the first prism carrier 21 is 3, thereby ensuring the stability of the head-rolling balls 52 when abutting against the second prism carrier 22, and the triangular grooves and the head-rolling balls 52 cooperate to also achieve positioning.

[0069] Referring to Figures 4 to 10 In an optional embodiment of the utility model, the above lens driving device 100 can further include a magnetic attraction assembly, the magnetic attraction assembly is arranged at one end of the second prism carrier 22 and passes through the first prism carrier 21, and the magnetic attraction assembly is used to provide a magnetic attraction force for mounting the first prism carrier 21 and the second prism carrier 22 on the inner end wall of one end of the base 1.

[0070] And / or a zoom guide, the zoom guide includes a support step 31 arranged at the bottom end of the lens carrier 3 and a guide rod 12 arranged in the base 1, and the guide rod 12 cooperates with the support step 31 to guide the zoom action of the lens carrier 3.

[0071] As Figure 2 shown, preferably, a guide groove 11 is formed on the bottom surface inside the base 1 for installing a guide rod 12; more preferably, the guide rod 12 can be provided as a cylinder, which can play a guiding role and reduce the friction when the lens carrier 3 moves.

[0072] Preferably, the magnetic attraction assembly comprises an attraction magnet 91 and an attraction iron sheet 92. The attraction magnet 91 is arranged at one end of the second prism carrier 22 and penetrates the first prism carrier 21, and the attraction iron sheet 92 is arranged on the inner wall of one end of the base 1. An attraction magnet installation groove 223 is formed at one end of the second prism carrier 22 for installing the attraction magnet 91. Figures 12 to 16 An avoiding opening 215 is formed on the first prism carrier 21, and the attraction magnet 91 generates a magnetic attraction force with the attraction iron sheet 92 arranged on the inner wall of one end of the base 1 after penetrating the avoiding opening 215. The magnetic attraction force stably installs the second prism carrier 22 and the first prism carrier 21 on the base 1, so as to avoid the nodding ball 42, the nodding roller 41, the shaking ball 52 and the shaking roller 51 from being separated, thereby ensuring the stability of the first prism carrier 21 and the second prism carrier 22 when moving and improving the reliability of the device.

[0073] Referring to Figures 2 to 12 In an optional embodiment of the present application, the prism carrier driving mechanism comprises a nodding coil 62 arranged on the inner side wall of one side of the base 1, a shaking coil 72 arranged on the inner side wall of the other side of the base 1, a nodding magnet 61 arranged on the outer side wall of one side of the second prism carrier 22, and a shaking magnet 71 arranged on the outer side wall of the other side of the second prism carrier 22. The nodding coil 62 is arranged opposite to the nodding magnet 61, and the shaking coil 72 is arranged opposite to the shaking magnet 71.

[0074] Preferably, a nodding magnet installation groove 221 is formed on the outer side wall of one side of the second prism carrier 22 for installing the nodding magnet 61, and a shaking magnet installation groove 222 is formed on the outer side wall of the other side of the second prism carrier 22 for installing the shaking magnet 71.

[0075] In the embodiment, the nodding magnet 61 is arranged on the outer side wall of one side of the second prism carrier 22, and the nodding magnet 61 cooperates with the nodding coil 62 arranged on the FPC plate 10 to drive the first prism carrier 21 to perform the nodding action; since the first prism carrier 21 is arranged at one end of the second prism carrier 22, and the adsorbing magnet 91 and the shaking roller 51 are arranged between the first prism carrier 21 and the second prism carrier 22, when the first prism carrier 21 performs the nodding action, an inclined pressing force of the adsorbing magnet 91 and the shaking roller 51 is generated, thereby driving the second prism carrier 22 to perform the nodding action together; the shaking magnet 71 is arranged on the other side of the second prism carrier 21, the shaking magnet 71 cooperates with the shaking coil 72 arranged on the FPC plate 10 to drive the second prism carrier 22 to perform the shaking action alone relative to the first prism carrier 21; during the process that the coil and the magnet act to generate the pushing force to push the first prism carrier 21 to drive the second prism carrier 22 to perform the nodding action or the second prism carrier 22 to perform the shaking action, the pushing force generated by the coil and the magnet acting should be greater than the magnetic force generated between the adsorbing magnet 91 and the adsorbing iron sheet 92, so as to realize the accurate control of the nodding or shaking action.

[0076] During the initial stage of the coil being electrified, the pushing force generated by the coil and the magnet acting can also be less than the magnetic force generated between the adsorbing magnet 91 and the adsorbing iron sheet 92, at this time, the action corresponding to the electrified coil is the main action, the actual amplitude of the other action is very small, and the occurrence of the other action can guarantee the close cooperation between the components and prevent the gap from being too large and the ball / roller from jumping out; specifically: when the electrified coil is the shaking coil 72, at this time, the second prism carrier 22 takes the shaking action as the main action, and the amplitude of the nodding action of the second prism carrier 22 caused by the adsorbing magnet 91 is very small.

[0077] Here, the FPC plate 10 is embedded on the inner wall of the base 1, the nodding coil 62 and the shaking coil 72 are arranged on the FPC plate 10 and are powered by the FPC plate 10, and the nodding coil 62 and the shaking coil 72 are embedded on the inner wall of the base 1 together with the FPC plate 10.

[0078] Referring to Figures 2 to 12 In an optional embodiment of the utility model, the lens carrier driving mechanism includes the zoom coil 82 arranged on the inner side wall of one side of the base 1 and the zoom magnet 81 arranged on the outer side wall of the lens carrier 3, and the zoom coil 82 and the zoom magnet 81 are oppositely arranged. Preferably, the zoom magnet mounting groove for mounting the zoom magnet 81 is arranged on the outer side wall of the lens carrier 3.

[0079] In the embodiment, a zoom magnet 81 is arranged on the side wall of the lens carrier 3, a zoom coil 82 is arranged on the inner side wall of the base 1, and the zoom coil 82 and the zoom magnet 81 cooperate to generate driving force to drive the lens carrier 3 to perform zoom movement, and the zoom coil is powered by the FPC board arranged outside the base.

[0080] Here, the zoom coil 82 is arranged on the FPC board 10 and powered by the FPC board 10, and the zoom coil 82 is embedded on the inner wall of the base 1 together with the FPC board 10.

[0081] The lens driving device provided by the above embodiment of the utility model has the point head roller and the shake head roller arranged on the key contact surface of the first prism carrier and the second prism carrier, which significantly reduces the friction force in the point head and shake head actions, reduces the friction loss, and improves the service life of the device; meanwhile, the cooperation of the adsorption magnet and the base adsorption iron sheet enhances the adsorption force between the carriers and prevents the components from being separated during the movement; in addition, the point head roller and the shake head roller are arranged on one side for assembly, which reduces the assembly operation difficulty, and on the other side, the point head roller and the shake head roller can guide the point head and shake head actions to ensure the accuracy of the direction during the corresponding actions.

[0082] The above is the preferred embodiment of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, some improvements and refinements can be made without departing from the principles of the disclosure, and these improvements and refinements should also be considered as the protection range of the disclosure.

Claims

1. A lens driving device characterized by comprising: The lens carrier and the prism carrier are sequentially arranged in the base along a first direction, the lens carrier driving mechanism drives the lens carrier to move along the first direction, and the prism carrier driving mechanism drives the prism carrier to move around a second direction and a third direction, the first direction is perpendicular to the second direction and located in the same plane, and the third direction is perpendicular to the plane; The prism carrier includes a first prism carrier and a second prism carrier, the first prism carrier is arranged on the other side of the lens carrier along the first direction, and the second prism carrier is arranged between the first prism carrier and the lens carrier along the first direction; The end of the first prism carrier and the inner end wall of one end of the base are provided with a nodding fulcrum structure, the end of the second prism carrier and the other end of the first prism carrier are provided with a shaking fulcrum structure, and the nodding fulcrum structure and the shaking fulcrum structure are cross structures, the nodding fulcrum structure is used for assisting the first prism carrier to move around the second direction, and the shaking fulcrum structure is used for assisting the second prism carrier to move around the third direction.

2. The lens driving device according to claim 1, wherein The nodding fulcrum structure includes a nodding roller and a nodding ball, the two sides of the nodding roller and the two sides of the nodding ball are respectively abutted between the end face of the one end of the first prism carrier and the inner end wall of one end of the base, and the first prism carrier moves around the second direction with the nodding ball as a nodding fulcrum and the nodding roller as a nodding guide.

3. The lens driving device according to claim 2, wherein The nodding ball and the nodding roller are arranged on the end face of the one end of the first prism carrier along the second direction, and the axial direction of the nodding roller is parallel to the second direction.

4. The lens driving device according to claim 2, wherein The end face of the one end of the first prism carrier is provided with a nodding roller groove and a nodding ball groove along the second direction.

5. The lens driving apparatus according to claim 1, wherein The shaking fulcrum structure includes a shaking roller and a shaking ball, the two sides of the shaking roller and the two sides of the shaking ball are respectively abutted between the end face of the one end of the second prism carrier and the end face of the other end of the first prism carrier, and the second prism carrier moves around the third direction with the shaking ball as a shaking fulcrum and the shaking roller as a shaking guide.

6. The lens driving apparatus according to claim 5, wherein The shaking roller and the shaking ball are arranged on the end face of the other end of the first prism carrier along the third direction, and the axial direction of the shaking roller is parallel to the third direction.

7. The lens driving apparatus according to claim 5, wherein The end face of the other end of the first prism carrier is provided with a shaking roller groove and a shaking ball groove along the third direction.

8. The lens driving apparatus according to claim 2, wherein The magnetic attraction assembly is arranged at the one end of the second prism carrier and passes through the first prism carrier, and the magnetic attraction assembly is used for providing magnetic attraction force for mounting the first prism carrier and the second prism carrier on the inner end wall of one end of the base. And / or a zoom guide, the zoom guide includes a support step arranged at the bottom end of the lens carrier and a guide rod arranged in the base, and the guide rod and the support step cooperate to guide the zoom action of the lens carrier.

9. The lens driving apparatus according to claim 1, wherein The prism carrier driving mechanism comprises a nodding coil arranged on the inner side wall of one side of the base, a shaking coil arranged on the inner side wall of the other side of the base, a nodding magnet arranged on the outer side wall of one side of the second prism carrier, and a shaking magnet arranged on the outer side wall of the other side of the second prism carrier, the nodding coil being arranged opposite to the nodding magnet, and the shaking coil being arranged opposite to the shaking magnet.

10. The lens driving apparatus according to claim 1, wherein The lens carrier driving mechanism comprises a zoom coil arranged on the inner side wall of one side of the base and a zoom magnet arranged on the outer side wall of the lens carrier, the zoom coil being arranged opposite to the zoom magnet.

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