A reed-type rotary device

Abstract

The application discloses a reed type rotating device, which comprises a reed, a bearing frame and a driving assembly. The reed comprises an inner movable part, an intermediate movable part, an outer fixed part, an inner pivot part and an outer pivot part. The bearing frame comprises an inner bearing frame, a middle bearing frame and an outer bearing frame, and an optical element is arranged on the inner movable part and / or the inner bearing frame. The driving assembly is used for driving the inner bearing frame to rotate relative to the middle bearing frame in a first axial direction, so that the inner bearing frame drives the inner movable part and the optical element to rotate relative to the middle bearing frame in the first axial direction. The driving assembly is used for driving the middle bearing frame to rotate relative to the outer bearing frame in a second axial direction, so that the middle bearing frame drives the inner movable part, the inner bearing frame, the intermediate movable part and the optical element to rotate relative to the outer bearing frame in the second axial direction. The reed type rotating device can reduce the coupling generated when the reed rotates in the first axial direction and the second axial direction, and thus the control precision of the optical element is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical equipment, in particular to a reed type rotating device. BACKGROUND

[0002] The reed type rotating device can change the angle of the optical element, so that a certain included angle is formed between the surface of the optical element and the optical path to achieve the function of optical reflection or refraction. The reed type rotating device can be applied to the field of camera to compensate for optical jitter and to the field of laser radar to reflect scanning.

[0003] In the prior art, for example, CN106257907B discloses a reed type rotating module, which comprises a light path adjusting element, a rotating element and a driving module. The light path adjusting element is arranged on the rotating element. The rotating element is a three-section structure, which comprises an inner plate part, a middle frame part and an outer frame part. The driving module comprises an inner bearing frame and an outer bearing frame. The inner plate part of the rotating element is arranged on the inner bearing frame, and the outer frame part is arranged on the outer bearing frame. The magnet and the coil in the driving module generate electromagnetic force to push the inner bearing frame together with the inner plate part to drive the light path adjusting element to pivot along the first axis (i.e. X axis). The magnet and the coil also generate electromagnetic force to push the inner bearing frame together with the inner plate part to drive the light path adjusting element to pivot along the second axis (i.e. Y axis). However, when the rotating element pivots along the X axis and the Y axis respectively, the pivoting motion along the X axis and the pivoting motion along the Y axis are likely to affect each other and produce coupling. Specifically, when the rotating element pivots along the X axis, the second connecting end 122 located on the Y axis will be stretched and deformed, causing unnecessary movement of the rotating element on the Y axis. When the rotating element 10 pivots along the Y axis, the first connecting end 132 located on the X axis will be stretched and deformed under the drive of the inner bearing frame, causing unnecessary movement of the rotating element on the X axis, thereby affecting the precision of the pivoting motion.

[0004] Therefore, the existing reed type rotating device needs to be improved. SUMMARY

[0005] The purpose of the present application is to provide a reed type rotating device which can reduce the coupling generated when the reed rotates along the first axis and the second axis, thereby improving the control accuracy of the optical element.

[0006] The purpose of the present application is achieved by the following technical solution:

[0007] A reed type rotating device for controlling an optical element to rotate in at least two different axes, comprising:

[0008] The spring sheet comprises an inner movable part, an intermediate movable part, an outer fixed part, an inner pivot part connecting the inner movable part and the intermediate movable part, and an outer pivot part connecting the intermediate movable part and the outer fixed part;

[0009] The bearing frame comprises an inner bearing frame, a middle bearing frame and an outer bearing frame corresponding to the inner movable part, the intermediate movable part and the outer fixed part, and the optical element is arranged on the inner movable part and / or the inner bearing frame;

[0010] The driving assembly drives the inner bearing frame to rotate relative to the middle bearing frame in the first axial direction, so that the inner bearing frame drives the inner movable part and the optical element to rotate relative to the middle bearing frame in the first axial direction with the inner pivot part as the rotation axis; and / or,

[0011] The driving assembly drives the middle bearing frame to rotate relative to the outer bearing frame in the second axial direction, so that the middle bearing frame drives the intermediate movable part, the inner movable part, the inner bearing frame and the optical element to rotate relative to the outer bearing frame in the second axial direction with the outer pivot part as the rotation axis.

[0012] Preferably, the number of the inner pivot parts is two, and the two inner pivot parts are arranged near the two ends of the inner bearing frame in the first axial direction respectively, and the two ends of the two inner pivot parts are connected with the inner movable part and the intermediate movable part respectively;

[0013] The number of the outer pivot parts is two, and the two outer pivot parts are arranged near the two ends of the middle bearing frame in the second axial direction respectively, and the two ends of the two outer pivot parts are connected with the intermediate movable part and the outer fixed part respectively.

[0014] Preferably, the inner pivot part is curved and extends along the first axial direction and forms a torsion beam structure, and the inner pivot part provides a restoring torsion for the state restoration of the inner movable part after rotation;

[0015] The outer pivot part is curved and extends along the second axial direction and forms a torsion beam structure, and the outer pivot part provides a restoring torsion for the state restoration of the intermediate movable part after rotation.

[0016] Preferably, the middle bearing frame is suspended on the outer bearing frame through the intermediate movable part of the spring sheet, and the middle bearing frame and the outer bearing frame have a space for rotational movement, and the inner bearing frame is suspended on the middle bearing frame through the inner movable part of the spring sheet, and the inner bearing frame and the middle bearing frame have a space for rotational movement.

[0017] Preferably, the inner carrier, the middle carrier and the outer carrier are respectively provided with a first limiting block, a second limiting block and a third limiting block, the first limiting block of the inner carrier is located on the second limiting block of the middle carrier and has a gap therebetween to limit the rotation angle of the middle carrier, and the third limiting block of the outer carrier is located on the first limiting block of the inner carrier and has a gap therebetween to limit the rotation angle of the inner carrier.

[0018] Preferably, the inner movable part is in a whole structure or a split structure and is connected to the inner carrier on at least two sides in the first axial direction.

[0019] The middle movable part is in a whole structure and is arranged outside the inner movable part, and is connected to the middle carrier on at least two sides in the second axial direction.

[0020] The outer fixed part is in a whole structure or a split structure and is connected to the outer carrier on at least two sides in the second axial direction.

[0021] Preferably, the inner movable part is in a closed frame structure, or the inner movable part comprises a pair of split and arranged connecting pieces which are symmetrically arranged on opposite sides of the inner carrier in the first axial direction.

[0022] The middle movable part is in a closed frame structure.

[0023] The outer fixed part is in a closed frame structure and is arranged outside the middle movable part, or the outer fixed part comprises a pair of split and arranged fixed pieces which are symmetrically arranged on opposite sides of the outer carrier in the second axial direction.

[0024] Preferably, the spring piece is a planar structure formed by cutting and / or etching from the same plate material, and the inner movable part, the middle movable part, the outer fixed part, the inner pivot part and the outer pivot part are all located in the same plane.

[0025] Preferably, the positions where the middle movable part and the inner movable part are respectively connected to the inner pivot part form a first opening; and / or,

[0026] The positions where the middle movable part and the outer fixed part are respectively connected to the outer pivot part form a second opening.

[0027] Preferably, the driving assembly comprises two first driving parts and two second driving parts, the two first driving parts are respectively arranged at two ends of the inner carrier in the second axial direction to drive the inner carrier to rotate relative to the middle carrier in the first axial direction, and the two second driving parts are respectively arranged at two ends of the middle carrier in the first axial direction to drive the middle carrier to rotate relative to the outer carrier in the second axial direction.

[0028] Preferably, the first driving part comprises a first coil and a first magnet, and the second driving part comprises a second coil and a second magnet.

[0029] The inner carrier comprises two first end parts in the second axial direction and a first main body part connecting the two first end parts, one of the first coil and the first magnet is arranged at the two first end parts, and the other is arranged at the outer carrier correspondingly.

[0030] The middle carrier comprises two second end parts in the first axial direction and a second main body part connecting the two second end parts, one of the second coil and the second magnet is arranged at the two second end parts, and the other is arranged at the outer carrier correspondingly.

[0031] The first main body part is located above the second main body part and has a gap therebetween.

[0032] Preferably, the optical element is directly fixed to the inner carrier, or the optical element is indirectly fixed to the inner carrier.

[0033] Preferably, the driving assembly further comprises a cover arranged on the outer carrier, at least part of the outer carrier and at least part of the reed are located inside the cover, the cover is provided with a gap corresponding to the position of the inner carrier, and at least part of the inner carrier is exposed from the gap; and / or,

[0034] The driving assembly further comprises a support connected to the inner carrier, the optical element is fixed to the support and indirectly fixed to the inner carrier through the support.

[0035] Preferably, the driving assembly further comprises a plurality of metal terminals integrally embedded in the outer carrier and a substrate arranged at the bottom of the outer carrier, one end of the metal terminal is connected with the substrate, the other end of the metal terminal is connected with the driving assembly, the substrate is provided with a control module, and the control module is used to control the driving assembly to drive the inner carrier and the middle carrier to rotate; and / or,

[0036] The position detection module is used for detecting the rotation amount of the inner bearing frame in the first axial direction and the rotation amount of the middle bearing frame in the second axial direction, and the control module controls the driving assembly to drive the inner bearing frame and the middle bearing frame to rotate according to the detection data of the position detection module.

[0037] Preferably, a light path is defined, and the surface of the optical element forms an angle with the light path to form optical reflection or optical refraction.

[0038] Compared with the prior art, the present application has at least the following beneficial effects:

[0039] The spring leaf type rotating device of the present application comprises an inner bearing frame, a middle bearing frame and an outer bearing frame corresponding to the inner movable part, the middle movable part and the outer fixed part. When the driving assembly drives the inner bearing frame to rotate relative to the middle bearing frame in the first axial direction, the outer pivot part is not pulled due to the restraint of the middle bearing frame, ensuring that the outer pivot part does not deform unnecessarily. When the driving assembly drives the middle bearing frame to rotate relative to the outer bearing frame in the second axial direction, the inner pivot part is not pulled due to the restraint of the inner bearing frame, ensuring that the inner pivot part does not deform unnecessarily. That is, the inner pivot part and the outer pivot part are independent of each other when the inner bearing frame and the middle bearing frame rotate, thereby reducing the coupling generated by the spring leaf rotating in the first axial direction and the second axial direction, and further improving the control accuracy of the optical element. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is an exploded schematic view of the spring leaf type rotating device of the embodiment of the present application.

[0041] Figure 2 is a three-dimensional structural schematic view of the spring leaf type rotating device of the embodiment of the present application.

[0042] Figure 3 is a three-dimensional structural schematic view of part of the spring leaf type rotating device of the embodiment of the present application.

[0043] Figure 4 is an exploded schematic view of part of the spring leaf type rotating device of the embodiment of the present application.

[0044] Figure 5 is a structural schematic view of the spring leaf in the embodiment of the present application.

[0045] Figure 6 is a planar structural schematic view of part of the spring leaf type rotating device of the embodiment of the present application.

[0046] Figure 7 is a sectional view along Figure 6 the A-A line.

[0047] Figure 8 is along Figure 6 a cross-sectional view along the line B-B in

[0048] In the figure: 100, a leaf spring type rotating device; 1, a leaf spring; 11, an inner movable part; 111, a first opening; 112, a combination piece; 12, a middle movable part; 13, an outer fixed part; 131, a fixed piece; 14, an inner pivoting part; 15, an outer pivoting part; 2, a bearing frame; 21, an inner bearing frame; 211, a first limiting block; 212, a first end part; 213, a first main body part; 22, a middle bearing frame; 221, a second limiting block; 222, a second end part; 223, a second main body part; 23, an outer bearing frame; 231, a third limiting block; 232, a containing space; 3, a driving assembly; 31, a first driving part; 311, a first coil; 312, a first magnet; 32, a second driving part; 321, a second coil; 322, a second magnet; 4, a cover body; 41, a notch; 5, a support piece; 51, a connecting part; 52, a support part; 6, a metal terminal; 7, a base plate; 71, a control module; 8, a position detection module; 81, a first position detection module; 82, a second position detection module; 9, an optical element. DETAILED DESCRIPTION

[0049] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, the example embodiments can be implemented in many different forms and should not be construed as 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 example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the several views and the figures are not necessarily to scale, with emphasis being placed on explaining the principles of the example embodiments.

[0050] The words expressing position and direction described in the present application are explained by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0051] With reference to Figures 1 to 8 , the present application provides a leaf spring type rotating device 100 for controlling rotation of an optical element 9 in at least two different axial directions, the leaf spring type rotating device 100 can include a leaf spring 1, a bearing frame 2, and a driving assembly 3, the leaf spring 1 is connected with the bearing frame 2, the driving assembly 3 can drive the bearing frame 2 to rotate, and the bearing frame 2 drives the optical element 9 to rotate. A light path is defined, and a certain angle is formed between the surface of the optical element 9 and the light path to form optical reflection or optical refraction. The leaf spring type rotating device 100 can be applied in the field of optical systems, and the bearing frame 2 drives the optical element 9 to rotate, for example, it can be used in the field of cameras to compensate for the offset caused by optical jitter, and it can also be used in the field of laser radar to change the direction of the laser beam in reflection scanning to realize scanning of target objects, etc.

[0052] Specifically, the reed 1 can include an inner movable part 11, an intermediate movable part 12, an outer fixed part 13, an inner pivot part 14 connecting the inner movable part 11 and the intermediate movable part 12, and an outer pivot part 15 connecting the intermediate movable part 12 and the outer fixed part 13. The intermediate movable part 12 is arranged outside the inner movable part 11, the intermediate movable part 12 is arranged in a spaced manner with the inner movable part 11 and is connected through the inner pivot part 14, the outer fixed part 13 is arranged outside the intermediate movable part 12, the outer fixed part 13 is arranged in a spaced manner with the intermediate movable part 12 and is connected through the outer pivot part 15. The inner pivot part 14 extends in a first axial direction, and the inner pivot part 14 can be deformed in rotation in the first axial direction, that is, the inner pivot part 14 serves as a rotation axis, and the inner movable part 11 and the intermediate movable part 12 can realize relative rotation in the first axial direction through the inner pivot part 14. The outer pivot part 15 extends in a second axial direction, and the outer pivot part 15 can be deformed in rotation in the second axial direction, that is, the outer pivot part 15 serves as a rotation axis, and the intermediate movable part 12 and the outer fixed part 13 can realize relative rotation in the second axial direction through the outer pivot part 15.

[0053] As a preferred mode, the reed 1 can be formed into a planar structure by cutting and / or etching from the same plate material, and the inner movable part 11, the intermediate movable part 12, the outer fixed part 13, the inner pivot part 14 and the outer pivot part 15 are all located in the same plane. In this embodiment, the inner movable part 11, the intermediate movable part 12 and the outer fixed part 13 can be formed by cutting, and the inner pivot part 14 and the outer pivot part 15 can be formed by etching, and the cutting mode includes one or more of laser cutting, stamping cutting, etc. The inner pivot part 14 extends in a first axial direction and forms a torsion beam structure, and the inner pivot part 14 provides a restoring torsion for the state restoration of the inner movable part 11 after rotation. The outer pivot part 15 extends in a second axial direction and forms a torsion beam structure, and the outer pivot part 15 provides a restoring torsion for the state restoration of the intermediate movable part 12 after rotation. That is, when the first driving part 31 drives the inner carrier 21, the inner carrier 21 drives the inner movable part 11 to rotate in the first axial direction with the inner pivot part 14 as the rotation axis, at this time the inner pivot part 14 deforms and generates a restoring torsion, when the first driving part 31 stops working, under the action of the restoring torsion of the inner pivot part 14, the inner movable part 11 and the inner carrier 21 restore to the state before rotation, thereby driving the optical element 9 to restore to the state before rotation. When the second driving part 32 drives the middle carrier 22, the middle carrier 22 drives the intermediate movable part 12 to rotate in the second axial direction with the outer pivot part 15 as the rotation axis, at this time the outer pivot part 15 deforms and generates a restoring torsion, when the second driving part 32 stops working, under the action of the restoring torsion of the middle pivot part, the intermediate movable part 12 and the middle carrier 22 restore to the state before rotation, thereby driving the optical element 9 to restore to the state before rotation.

[0054] The position where the intermediate movable part 12 and the inner movable part 11 are connected with the inner pivot part 14 can form a first opening 111, which can increase the length of the inner pivot part 14 in the first axial direction, so as to ensure that the inner pivot part 14 has appropriate torsion and recovery torsion, and when the inner carrier 21 is driven, the inner pivot part 14 can normally rotate and deform, and when the driving force on the inner carrier 21 disappears, the recovery torsion of the inner pivot part 14 can make the inner movable part 11 and the inner carrier 21 return to the state before rotation. The other positions of the intermediate movable part 12 and the inner movable part 11 are not provided with the first opening 111, which can ensure the structural strength of the intermediate movable part 12 and the inner movable part 11. The first opening 111 can not only ensure the length of the inner pivot part 14, but also shorten the distance between the intermediate movable part 12 and the inner movable part 11, reduce the volume of the intermediate movable part 12 and the inner movable part 11, and be conducive to miniaturization design.

[0055] The position where the intermediate movable part 12 and the outer fixed part 13 are connected with the outer pivot part 15 can also form a second opening (not shown in the figure), which can also increase the length of the outer pivot part 15 in the second axial direction, so as to ensure that the outer pivot part 15 has appropriate torsion and recovery torsion, and when the middle carrier 22 is driven, the outer pivot part 15 can normally rotate and deform, and when the driving force on the middle carrier 22 disappears, the recovery torsion of the outer pivot part 15 can make the intermediate movable part 12 and the middle carrier 22 return to the state before rotation. The other positions of the intermediate movable part 12 and the outer fixed part 13 are not provided with the second opening, which can ensure the structural strength of the intermediate movable part 12 and the outer fixed part 13. The second opening can not only ensure the length of the outer pivot part 15, but also shorten the distance between the intermediate movable part 12 and the outer fixed part 13, reduce the volume of the intermediate movable part 12 and the outer fixed part 13, and be conducive to miniaturization design.

[0056] The carrier 2 can include an inner carrier 21, a middle carrier 22 and an outer carrier 23 connected with the inner movable part 11, the intermediate movable part 12 and the outer fixed part 13, and the optical element 9 is arranged on the inner movable part 11 and / or the inner carrier 21, that is, the optical element 9 can be fixedly connected with the inner movable part 11, the optical element 9 can be fixedly connected with the inner carrier 21, or the optical element 9 is fixedly connected with the inner movable part 11 and the inner carrier 21 at the same time, and the optical element 9 can be a mirror, a prism or the like.

[0057] The outer carrier 23 has a containing space 232, and the inner carrier 21 and the middle carrier 22 are arranged in the containing space 232. The inner carrier 21, the middle carrier 22 and the outer carrier 23 are independently arranged relative to each other, the outer carrier 23 is relatively fixedly arranged, and the inner carrier 21 and the middle carrier 22 are movably arranged relative to the outer carrier 23. That is, the inner carrier 21 can rotate relative to the middle carrier 22 and the outer carrier 23, the middle carrier 22 can rotate relative to the outer carrier 23 and drive the inner carrier 21 to rotate relative to the outer carrier 23. When the middle carrier 22 rotates relative to the outer carrier 23, the inner carrier 21 can be stationary relative to the middle carrier 22, that is, at this time the driving assembly 3 directly drives the middle carrier 22 to rotate, or the inner carrier 21 can rotate relative to the middle carrier 22, that is, at this time the driving assembly 3 directly drives the inner carrier 21 and the middle carrier 22 to rotate respectively.

[0058] The inner carrier 21, the middle carrier 22 and the outer carrier 23 can be linked through the spring leaf 1. The inner movable part 11 is fixedly connected with the inner carrier 21, the middle movable part 12 is fixedly connected with the middle carrier 22, and the outer fixed part 13 is fixedly connected with the outer carrier 23. The middle movable part 12 is connected with the inner movable part 11 through the inner pivot part 14, and the outer fixed part 13 is connected with the middle movable part 12 through the outer pivot part 15. Then, the inner carrier 21 and the middle carrier 22 are linked through the middle movable part 12, the inner movable part 11 and the inner pivot part 14, the middle carrier 22 and the outer carrier 23 are linked through the outer fixed part 13, the middle movable part 12 and the outer pivot part 15, and further the inner carrier 21, the middle carrier 22 and the outer carrier 23 are linked through the spring leaf 1.

[0059] The driving assembly 3 can be used to drive the inner carrier 21 to rotate relative to the middle carrier 22 in the first axial direction, so that the inner carrier 21 drives the inner movable part 11 and the optical element 9 to rotate relative to the middle carrier 22 in the first axial direction with the inner pivot part 14 as the rotation axis. The driving assembly 3 can also be used to drive the middle carrier 22 to rotate relative to the outer carrier 23 in the second axial direction, so that the middle carrier 22 drives the inner movable part 11, the inner carrier 21, the middle movable part 12 and the optical element 9 to rotate relative to the outer carrier 23 in the second axial direction with the outer pivot part 15 as the rotation axis. The driving assembly 3 can realize rapid and accurate control of the inner carrier 21 and the middle carrier 22. The driving assembly 3 can be one or more of an electromagnetic driving device, a shape memory alloy driving device or a piezoelectric motor, and of course the driving assembly 3 can also be other types of driving devices.

[0060] Specifically, the inner carrier 21 rotates relative to the middle carrier 22 in the first axial direction under the driving of the driving assembly 3, thereby driving the rotation of the optical element 9 and the inner movable part 11. At this time, the inner carrier 21 and the inner movable part 11 both rotate relative to the middle carrier 22 and the middle movable part 12, while the middle movable part 12 is relatively fixed due to the restraint of the middle carrier 22. That is, the inner carrier 21 and the inner movable part 11 can rotate independently when the middle carrier 22, the middle movable part 12, the outer carrier 23 and the outer fixed part 13 are relatively fixed, and can rotate relatively when the middle carrier 22 and the middle movable part 12 move relative to the outer carrier 23 and the outer fixed part 13. When the middle carrier 22 rotates relative to the outer carrier 23 in the second axial direction under the driving of the driving assembly 3, the middle movable part 12, the inner movable part 11, the inner carrier 21 and the optical element 9 are simultaneously driven to rotate, that is, the middle carrier 22, the middle movable part 12, the inner carrier 21 and the inner movable part 11 rotate relative to the outer carrier 23 and the outer fixed part 13 when the outer carrier 23 and the outer fixed part 13 are fixed.

[0061] In summary, the middle carrier 22 and the middle movable part 12 only rotate in the second axial direction, while the inner carrier 21 and the inner movable part 11 can rotate in the first axial direction or in the second axial direction driven by the middle carrier 22 and the middle movable part 12. Of course, the inner movable part 11 and the inner carrier 21 can also rotate in the first axial direction and the second axial direction at the same time, so that the optical element 9 can rotate in the first axial direction and the second axial direction respectively or simultaneously according to actual needs.

[0062] In the present application, the inner carrier 21, the middle carrier 22 and the outer carrier 23 corresponding to the inner movable part 11, the middle movable part 12 and the outer fixed part 13 are arranged. When the driving assembly 3 drives the inner carrier 21 to rotate relative to the middle carrier 22 in the first axial direction with the inner pivot part 14 as the rotation axis, the outer pivot part 15 will not be pulled due to the restraint of the middle carrier 22, ensuring that the outer pivot part 15 will not deform unnecessarily. When the driving assembly 3 drives the middle carrier 22 to rotate relative to the outer carrier 23 in the second axial direction with the outer pivot part 15 as the rotation axis, the inner pivot part 14 will not be pulled due to the restraint of the inner carrier 21, ensuring that the inner pivot part 14 will not deform unnecessarily. That is, the inner pivot part 14 and the outer pivot part 15 are independent of each other when the inner carrier 21 and the middle carrier 22 rotate, thereby reducing the coupling generated when the reed 1 rotates in the first axial direction and the second axial direction, and further improving the control accuracy of the optical element 9.

[0063] In an embodiment, the first axis and the second axis can be arranged to intersect each other, and preferably, the first axis and the second axis are arranged to be perpendicular to each other. For example, the first axis is an X axis, and the second axis is a Y axis, i.e., the X axis and the Y axis are arranged to intersect each other, and preferably, the X axis and the Y axis are arranged to be perpendicular to each other.

[0064] The number of the inner pivot portions 14 is preferably two, and the two inner pivot portions 14 are arranged close to two ends of the inner carrier 21 in the first axis, respectively. The two ends of the two inner pivot portions 14 are connected to the inner movable portion 11 and the intermediate movable portion 12, respectively. The two inner pivot portions 14 can improve the stability of the rotation of the inner carrier 21. The two ends of the inner carrier 21 in the first axis can be arranged close to opposite sides of the outer carrier 23, respectively. The two ends of the inner carrier 21 in the first axis can also be arranged close to opposite corners of the outer carrier 23, respectively.

[0065] The number of the outer pivot portions 15 is preferably two, and the two outer pivot portions 15 are arranged close to two ends of the middle carrier 22 in the second axis, respectively. The two ends of the two outer pivot portions 15 are connected to the intermediate movable portion 12 and the outer fixed portion 13, respectively. The two outer pivot portions 15 can improve the stability of the rotation of the middle carrier 22. The two ends of the middle carrier 22 in the second axis can be arranged close to opposite sides of the outer carrier 23, respectively. The two ends of the middle carrier 22 in the second axis can also be arranged close to opposite corners of the outer carrier 23, respectively.

[0066] That is, the two inner pivot portions 14 and the two outer pivot portions 15 are arranged close to four sides of the outer carrier 23, respectively, or arranged close to four corners of the outer carrier 23, respectively.

[0067] As a preferred mode, the inner movable portion 11 can be in a whole structure or a split structure, and the inner movable portion 11 is connected to at least two sides of the inner carrier 21 in the first axis. When the inner movable portion 11 is in the whole structure, the inner movable portion 11 can be in a flat plate shape or a closed frame structure. When the inner movable portion 11 is in the split structure, the inner movable portion 11 can include a pair of split connecting pieces 112, and the two connecting pieces 112 are arranged symmetrically on opposite sides of the inner carrier 21 in the first axis.

[0068] The intermediate movable portion 12 can be in a whole structure and arranged around the outside of the inner movable portion 11. When the intermediate movable portion 12 is in the whole structure, the intermediate movable portion 12 can be in a closed frame structure, and the intermediate movable portion 12 is connected to at least two sides of the middle carrier 22 in the second axis.

[0069] The outer fixing part 13 can be in a whole structure or a split structure, and the outer fixing part 13 is connected to the outer bearing frame 23 on at least two sides in the second axial direction. When the outer fixing part 13 is in a whole structure, the outer fixing part 13 can be in a flat plate shape or a closed frame structure. When the outer fixing part 13 is in a split structure, the outer fixing part 13 can include a pair of split fixing pieces 131, and the two fixing pieces 131 can be symmetrically arranged on opposite sides of the outer bearing frame 23 in the second axial direction.

[0070] In a specific embodiment, the middle bearing frame 22 can be suspended on the outer bearing frame 23 through the middle movable part 12 of the spring sheet 1, and the middle bearing frame 22 and the outer bearing frame 23 have a space for rotational movement. The two ends of the outer pivot part 15 are respectively connected to the outer fixing part 13 and the middle movable part 12, and the outer fixing part 13 and the middle movable part 12 are respectively connected to the outer bearing frame 23 and the middle bearing frame 22, that is, the outer fixing part 13, the outer pivot part 15 and the middle movable part 12 jointly support the weight of the middle bearing frame 22.

[0071] The inner bearing frame 21 can be suspended on the middle bearing frame 22 through the inner movable part 11 of the spring sheet 1, and the inner bearing frame 21 and the middle bearing frame 22 have a space for rotational movement. The two ends of the inner pivot part 14 are respectively connected to the middle movable part 12 and the inner movable part 11, and the middle movable part 12 and the inner movable part 11 are respectively connected to the middle bearing frame 22 and the inner bearing frame 21, that is, the middle movable part 12, the inner pivot part 14 and the inner movable part 11 jointly support the weight of the inner bearing frame 21.

[0072] As a preferred mode, the inner bearing frame 21, the middle bearing frame 22 and the outer bearing frame 23 are respectively provided with first limiting blocks 211, second limiting blocks 221 and third limiting blocks 231. The number of the first limiting blocks 211, the number of the second limiting blocks 221 and the number of the third limiting blocks 231 are all preferably four. The four first limiting blocks 211 are respectively arranged around the inner bearing frame 21, the four second limiting blocks 221 are respectively arranged around the middle bearing frame 22, and the four third limiting blocks 231 are respectively arranged around the outer bearing frame 23.

[0073] The first limiting block 211 of the inner carrier 21 is located on the second limiting block 221 of the middle carrier 22 and has a gap therebetween, the side of the second limiting block 221 of the middle carrier 22 away from the first limiting block 211 of the inner carrier 21 has a gap with the outer carrier 23, the gap provides space for the rotational movement of the middle carrier 22, during the rotational movement of the middle carrier 22, when the second limiting block 221 abuts against the first limiting block 211, the middle carrier 22 stops the rotational movement to limit the rotation angle of the middle carrier 22. The third limiting block 231 of the outer carrier 23 is located on the first limiting block 211 of the inner carrier 21 and has a gap therebetween, the gap provides space for the rotational movement of the inner carrier 21, during the rotational movement of the inner carrier 21, when the first limiting block 211 abuts against the third limiting block 231, the inner carrier 21 stops the rotational movement to limit the rotation angle of the inner carrier 21. The first limiting block 211, the second limiting block 221 and the third limiting block 231 are used to limit the rotation angle of the inner carrier 21 and the middle carrier 22 to prevent excessive rotational movement of the inner carrier 21 and the middle carrier 22.

[0074] In an embodiment, the driving assembly 3 can include two first driving parts 31 and two second driving parts 32, the first driving part 31 and the second driving part 32 can be electromagnetic driving devices, shape memory alloy driving devices or piezoelectric motors. The two first driving parts 31 can be respectively arranged at the two ends of the inner carrier 21 in the second axial direction to drive the inner carrier 21 to rotate relative to the middle carrier 22 in the first axial direction, and the two second driving parts 32 can be respectively arranged at the two ends of the middle carrier 22 in the first axial direction to drive the middle carrier 22 to rotate relative to the outer carrier 23 in the second axial direction.

[0075] When the first driving part 31 and the second driving part 32 are electromagnetic driving devices, the first driving part 31 can include a first coil 311 and a first magnet 312, the first coil 311 and the first magnet 312 can generate driving force to drive the inner carrier 21 to rotate relative to the middle carrier 22 in the first axial direction, and the second driving part 32 includes a second coil 321 and a second magnet 322, the second coil 321 and the second magnet 322 can generate driving force to drive the middle carrier 22 to rotate relative to the outer carrier 23 in the second axial direction.

[0076] The inner carrier 21 can include two first end portions 212 in the second axial direction and a first body portion 213 connecting the two first end portions 212, one of the first coil 311 and the first magnet 312 is arranged in the two first end portions 212, and the other is arranged in the outer carrier 23. That is, when the first coil 311 is arranged in the two first end portions 212 of the inner carrier 21 in the second axial direction, the first magnet 312 is arranged in the outer carrier 23 correspondingly, and when the first magnet 312 is arranged in the two first end portions 212 of the inner carrier 21 in the second axial direction, the first coil 311 is arranged in the outer carrier 23 correspondingly. The first end portion 212 can be provided with a groove to accommodate the first magnet 312 or the first coil 311, which is conducive to the miniaturization of the inner carrier 21.

[0077] The middle carrier 22 can include two second end portions 222 in the first axial direction and a second body portion 223 connecting the two second end portions 222, one of the second coil 321 and the second magnet 322 is arranged in the two second end portions 222, and the other is arranged in the outer carrier 23. That is, when the second coil 321 is arranged in the two second end portions 222 of the middle carrier 22 in the first axial direction, the second magnet 322 is arranged in the outer carrier 23 correspondingly, and when the second magnet 322 is arranged in the two second end portions 222 of the middle carrier 22 in the first axial direction, the second coil 321 is arranged in the outer carrier 23 correspondingly. The second end portion 222 can be provided with a groove to accommodate the second magnet 322 or the second coil 321, which is conducive to the miniaturization of the middle carrier 21.

[0078] In the embodiment, for example, as shown by the angle in Figure 3 and Figure 4 , the direction in which the substrate 7 is located is downward, and the direction in which the reed 1 is located is upward, the first body portion 213 can be located above the second body portion 223 with a gap therebetween, which can avoid interference when the inner carrier 21 and the middle carrier 22 rotate.

[0079] In a specific embodiment, the reed-type rotating device 100 can further include a cover 4, which is arranged on the outer carrier 23, at least part of the outer carrier 23 and at least part of the reed 1 are located inside the cover 4, that is, the cover 4 covers the outer carrier 23, and the cover 4 has a protective effect on the carrier 2 and the reed 1, preventing the carrier 2 and the reed 1 from being deformed or damaged due to external force. The cover 4 is provided with a gap 41 corresponding to the position of the inner carrier 21, and at least part of the inner carrier 21 can be exposed from the gap 41, so as to facilitate the direct or indirect connection of the optical element 9 to the inner carrier 21. In some embodiments, at least part of the inner movable portion 11 can also be exposed from the gap 41, so as to facilitate the direct or indirect connection of the optical element 9 to the inner movable portion 11.

[0080] The optical element 9 is directly fixed to the inner carrier 21, or the optical element 9 is indirectly fixed to the inner carrier 21. In a specific embodiment, the spring-leaf type rotating device 100 can further comprise a support 5 connected with the inner carrier 21, and the optical element 9 is fixed to the support 5 and indirectly fixed to the inner carrier 21 through the support 5. The support 5 is in the shape of T as a whole, and the support 5 can comprise a connecting portion 51 and a supporting portion 52, one end of the connecting portion 51 is connected with the inner carrier 21, the other end of the connecting portion 51 is connected with the supporting portion 52, the supporting portion 52 is in the shape of a flat plate as a whole, and the supporting portion 52 is used for supporting the optical element 9, and the area of the supporting portion 52 is relatively large, so that the optical element 9 can be more stably supported.

[0081] The spring-leaf type rotating device 100 can further comprise a plurality of metal terminals 6 integrally embedded in the outer carrier 23 and a substrate 7 arranged at the bottom of the outer carrier 23, both ends of the metal terminal 6 can be exposed from the outer carrier 23, one end of the metal terminal 6 can be connected with the substrate 7, and the other end of the metal terminal 6 can be connected with the driving assembly 3, that is, the metal terminal 6 can be connected with the first coil 311 and the second coil 321, so that the first coil 311 and the second coil 321 can be arranged in the outer carrier 23 to facilitate direct connection with the metal terminal 6. The metal terminal 6 is integrally embedded in the outer carrier 23, and a separate PCB or FPC is not needed, so that the number of parts can be reduced and the assembly space can be saved.

[0082] The substrate 7 can be provided with a control module 71, and the control module 71 is used for controlling the driving assembly 3 to drive the inner carrier 21 and the middle carrier 22 to rotate. The control module 71 can control the angle and direction of rotation of the inner carrier 21 and the middle carrier 22 by controlling the parameters such as the current size and direction of the first coil 311 and the second coil 321, so as to control the optical element 9 to form a certain angle between the surface of the optical element 9 and the optical path, so as to achieve the functions of optical reflection or optical refraction.

[0083] The spring-leaf type rotating device 100 can further comprise a position detection module 8, for example, a Hall sensor, and the position detection module 8 can be connected with the substrate 7 through the metal terminal 6. The position detection module 8 is used for detecting the rotation amount of the inner carrier 21 in the first axial direction and the rotation amount of the middle carrier 22 in the second axial direction, that is, the position detection module 8 can obtain the position information of the inner carrier 21 in the first axial direction and the position information of the middle carrier 22 in the second axial direction, and then obtain the rotation amount of the optical element 9 in the first axial direction and the rotation amount of the optical element 9 in the second axial direction, that is, obtain the position information of the optical element 9 in the first axial direction and the position information of the optical element 9 in the second axial direction. The control module 71 can control the driving assembly 3 to drive the inner carrier 21 and the middle carrier 22 to rotate according to the detection data of the position detection module 8, and then the inner carrier 21 and the middle carrier 22 drive the optical element 9 to rotate.

[0084] The position detecting module 8 can include a first position detecting module 81 and a second position detecting module 82, and the number of the first position detecting module 81 and the number of the second position detecting module 82 are both at least one. The first position detecting module 81 can be arranged on one side or both sides of the outer carrier 23 in the first axial direction, and the first position detecting module 81 can detect the rotation amount of the inner carrier 21 in the first axial direction, i.e. the first position detecting module 81 can detect the position information of the inner carrier 21 in the first axial direction. The second position detecting module 82 can be arranged on one side or both sides of the outer carrier 23 in the second axial direction, and the second position detecting module 82 can detect the rotation amount of the middle carrier 22 in the second axial direction, i.e. the second position detecting module 82 can detect the position information of the middle carrier 22 in the second axial direction.

[0085] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments without departing from the principles and spirit of the present application within the scope of the present application, and all these changes should be within the protection scope of the claims of the present application.

Claims

1. A reed type rotating device for camera field and controlling rotation of optical elements in at least two different axial directions, characterized in that, include: A reed, comprising an inner movable portion, a middle movable portion, an outer fixed portion, an inner pivot portion connecting the inner movable portion and the middle movable portion, and an outer pivot portion connecting the middle movable portion and the outer fixed portion. The middle movable portion is disposed outside the inner movable portion, spaced apart from the inner movable portion and connected through the inner pivot portion. The outer fixed portion is disposed outside the middle movable portion, spaced apart from the middle movable portion and connected through the outer pivot portion. The reed is a planar structure formed by cutting and / or etching from the same sheet metal. The inner movable portion, the middle movable portion, the outer fixed portion, the inner pivot portion, and the outer pivot portion are all located on the same plane. A first opening is formed at the location where the middle movable portion and the inner movable portion are respectively connected to the inner pivot portion, and / or, a second opening is formed at the location where the middle movable portion and the outer fixed portion are respectively connected to the outer pivot portion. A support frame includes an inner support frame, a middle support frame, and an outer support frame, which are respectively fixedly connected to the inner movable part, the middle movable part, and the outer fixed part. The outer support frame has a receiving space, and the inner support frame and the middle support frame are disposed within the receiving space. The inner support frame includes two first ends along a second axis and a first main body connecting the two first ends. The middle support frame includes two second ends along a first axis and a second main body connecting the two second ends. The first main body is located above the second main body and there is a gap between them. The middle support frame is suspended from the outer support frame by the middle movable part of the spring, and there is a space for rotational movement between the middle support frame and the outer support frame. The inner support frame is suspended from the middle support frame by the inner movable part of the spring, and there is a space for rotational movement between the inner support frame and the middle support frame, thereby enabling the inner support frame, the middle support frame, and the outer support frame to move together through the spring. The optical element is disposed in the inner movable part and / or the inner support frame. The inner support frame, the middle support frame, and the outer support frame are each provided with a first limiting block, a second limiting block, and a third limiting block, with four of each. The four first limiting blocks are respectively disposed around the bottom region of the inner support frame, with each pair of first limiting blocks connecting to the two end faces of one of the first ends along the first axial direction. The four second limiting blocks are respectively disposed around the middle region of the middle support frame, with each pair of second limiting blocks connecting to the two end faces of one of the second ends along the second axial direction. The four third limiting blocks are respectively disposed around the top region of the outer support frame, and are located within the accommodating space and at the four corners of the accommodating space. The first limiting block, the second limiting block, and the third limiting block are arranged in a one-to-one correspondence along the thickness direction of the spring sheet. The first limiting block is located on the second limiting block and there is a gap between them. During the rotation of the middle support frame, when the second limiting block abuts against the first limiting block, the middle support frame stops rotating to limit the rotation angle of the middle support frame. The third limiting block is located on the first limiting block and there is a gap between them. During the rotation of the inner support frame, when the first limiting block abuts against the third limiting block, the inner support frame stops rotating to limit the rotation angle of the inner support frame. A driving assembly includes two first driving units and two second driving units. Each first driving unit includes a first coil and a first magnet, and each second driving unit includes a second coil and a second magnet. The first and second coils are both disposed on the outer support frame, the first magnet is disposed on the inner support frame, and the second magnet is disposed on the middle support frame. The first driving units drive the inner support frame to rotate relative to the middle support frame in a first axial direction, causing the inner support frame to drive the inner movable part and the optical element to rotate relative to the middle support frame in the first axial direction about the inner pivot part as the rotation axis. The inner pivot part extends along the first axial direction and forms a torsion beam structure, providing restoring torque for the inner movable part to return to its original state after rotation. The second drive unit drives the middle support frame to rotate relative to the outer support frame in the second axis, so that the middle support frame drives the middle movable part, the inner movable part, the inner support frame and the optical element to rotate relative to the outer support frame in the second axis with the outer pivot part as the rotation axis. The outer pivot part extends along the second axis and forms a torsion beam structure. The outer pivot part provides restoring torque for the middle movable part to restore its state after rotation. A plurality of metal terminals are integrally embedded in the outer support frame, and one end of each metal terminal is connected to the first coil and the second coil.

2. The reed-type rotating device according to claim 1, characterized in that, The number of the inner pivoting parts includes two, and the two inner pivoting parts are respectively located near the two ends of the inner support frame in the first axis. The two inner pivoting parts extend and bend along the first axis, and the two ends of each inner pivoting part are respectively connected to the inner movable part and the intermediate movable part. The number of the external pivoting parts includes two, and the two external pivoting parts are respectively located near the two ends of the middle support frame in the second axis. The two external pivoting parts extend and bend along the second axis, and the two ends of each external pivoting part are respectively connected to the middle movable part and the external fixed part.

3. The reed-type rotating device according to claim 1, characterized in that, The inner movable part is either an integral structure or a split structure, and the inner movable part is connected to at least two sides of the inner support frame in the first axial direction. The intermediate movable part is an integral structure and is arranged around the outside of the inner movable part. The intermediate movable part is connected to at least two sides of the middle support frame in the second axis. The external fixing part is either an integral structure or a split structure, and the external fixing part is connected to at least two sides of the external support frame in the second axis.

4. The reed-type rotating device according to claim 3, characterized in that, The inner movable part is a closed frame structure, or the inner movable part includes a pair of separately arranged connecting pieces, which are symmetrically arranged on opposite sides of the inner support frame along the first axis direction; The intermediate movable part has a closed frame structure; The external fixing part is a closed frame structure and is arranged around the outside of the middle movable part, or the external fixing part includes a pair of separately arranged fixing plates, which are symmetrically arranged on opposite sides of the external support frame along the second axis direction.

5. The reed-type rotating device according to claim 1, characterized in that, The two first drive parts are respectively disposed at both ends of the inner support frame in the second axis to drive the inner support frame to rotate relative to the middle support frame in the first axis. The two second drive parts are respectively disposed at both ends of the middle support frame in the first axis to drive the middle support frame to rotate relative to the outer support frame in the second axis.

6. The reed-type rotating device according to claim 5, characterized in that, The first magnet is disposed at the two first ends, and the second magnet is disposed at the two second ends.

7. The reed-type rotating device according to claim 1, characterized in that, The optical element is directly fixed to the inner support frame, or the optical element is indirectly fixed to the inner support frame.

8. The reed-type rotating device according to claim 7, characterized in that, It also includes a cover body disposed on the outer support frame, at least a portion of the outer support frame and at least a portion of the spring sheet being located inside the cover body, the cover body having a notch corresponding to the position of the inner support frame, and at least a portion of the inner support frame being exposed through the notch; and / or, It also includes a support member connected to the inner support frame, wherein the optical element is fixed to the support member and indirectly fixed to the inner support frame through the support member.

9. The reed-type rotating device according to claim 1, characterized in that, It also includes a base plate disposed at the bottom of the outer support frame, the other end of the metal terminal being connected to the base plate, and a control module disposed on the base plate. The control module is used to control the drive assembly to drive the inner support frame and the middle support frame to rotate; and / or, It also includes a position detection module, which is used to detect the rotation amount of the inner support frame in the first axis and the rotation amount of the middle support frame in the second axis. The control module controls the drive assembly to drive the inner support frame and the middle support frame to rotate based on the detection data of the position detection module.

10. The reed-type rotating device according to claim 1, characterized in that, Define an optical path, wherein the surface of the optical element forms a certain angle with the optical path to form optical reflection or optical refraction.

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