Anti-shake Actuation Module and Camera Module

Abstract

The present invention discloses an anti-shake actuation module and a camera module. The anti-shake camera module includes: a translation actuator, the translation actuator includes a movable part, a fixed part and a first SMA wire, the movable part is movably arranged on the fixed part, the fixed part is provided with an elastic arm, the free end of the elastic arm abuts against the movable part, one end of the first SMA wire is connected to the fixed part, the other end of the first SMA wire is connected to the elastic arm, and the distance from the connection point of the first SMA wire and the elastic arm to the fixed end of the elastic arm is less than the arm length of the elastic arm, the first SMA wire is used to drive the elastic arm to push the movable part to translate; a rotation actuator, the rotation actuator is arranged on the movable part and is used to drive the image sensor module to rotate.

Description

Technical Field

[0001] The present invention relates to the field of imaging equipment, and particularly relates to an anti-shake actuator module and an imaging module. Background Art

[0002] During the process of mobile phone imaging, the image is occasionally unclear, and even double images or blurs occur. The reasons for this situation, in addition to incomplete focusing of the mobile phone, are largely due to slight jitters during the exposure of the photographed scene. This slight jitter phenomenon often occurs under handheld conditions, which will cause the lens of the imaging device to deviate, resulting in poor final imaging quality. In current applications, the lens module is usually driven by an actuator to perform translation for shake correction. In the existing technology, in order to reduce the volume, an actuator is often responsible for driving both the translation of the lens module and the rotation of the image sensor module at the same time, which has a high control difficulty; and the driving stroke of the existing translation correction is limited and cannot provide sufficient translation correction during relatively intense jitters. Summary of the Invention

[0003] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and provide an anti-shake actuator module that can achieve independent control of translation and rotation, has a simple and compact structure, and at the same time has a long translation driving stroke.

[0004] The anti-shake actuator module according to the first aspect embodiment of the present invention includes:

[0005] A translation actuator, the translation actuator includes a movable part, a fixed part, and a first SMA wire. The movable part is movably arranged on the fixed part. The fixed part is provided with an elastic arm. The free end of the elastic arm abuts against the movable part. One end of the first SMA wire is connected to the fixed part, and the other end of the first SMA wire is connected to the elastic arm. And the distance from the connection point of the first SMA wire and the elastic arm to the fixed end of the elastic arm is less than the arm length of the elastic arm. The first SMA wire is used to drive the elastic arm to push the movable part to translate;

[0006] A rotation actuator, the rotation actuator is arranged on the movable part and is used to drive the image sensor module to rotate.

[0007] The anti-shake actuation module according to an embodiment of the present invention has at least the following technical effects: The moving parts of the rotary actuator and the translation actuator are fixedly connected. The image sensor module is arranged on the rotary actuator. The translation actuator drives the rotary actuator and the image sensor module to perform translation, so as to achieve translation correction when the lens shakes. The rotary actuator is used to drive the image sensor module to rotate, so as to achieve rotation correction when the lens shakes. The rotary actuator and the translation actuator respectively control the rotation of the image sensor module and the translation of the lens module and the image sensor module, which can reduce the control difficulty, simplify the control algorithm, and make the shake correction of the anti-shake actuation module more accurate and timely. The translation actuator has a simple and compact structure, saves space, and drives the moving part to translate by pulling the elastic arm through the SMA wire. Compared with directly driving the moving part by the SMA wire, it has a larger driving stroke and can meet the translation correction under strong shaking conditions.

[0008] According to some embodiments of the present invention, the rotary actuator includes a bearing part, a rotating part, a plurality of connecting arms and a plurality of second SMA wires; one side of the rotating part is fixedly connected to the moving part, and the bearing part is movably connected to the other side of the rotating part; the bearing part is provided with a plurality of first connection positions, the side of the rotating part is provided with a plurality of second connection positions, and the plurality of second connection positions correspond to the plurality of first connection positions one by one. The rotating part is provided with a plurality of connection grooves, and the plurality of connection grooves are arranged around the axis of the rotating part; the connecting arms correspond to the connection grooves one by one, the connecting arms are arranged in the connection grooves, and one end of the connecting arm is connected to the middle of the rotating part, and the other end of the connecting arm is connected to the bearing part; the number of the second SMA wires corresponds to the first connection positions, and both ends of each second SMA wire are respectively connected to a pair of the first connection positions and the second connection positions.

[0009] According to some embodiments of the present invention, the connecting arm is provided with a torsion part, and the torsion part is formed by twisting a section of the connecting arm.

[0010] According to some embodiments of the present invention, the rotating part is provided with four connection grooves, and the four connection grooves are evenly arranged around the axis of the rotating part; four connecting arms are correspondingly arranged, and the four connecting arms are respectively arranged in the four connection grooves; four second SMA wires are provided, and the four second SMA wires are respectively located on different sides of the bearing part; the torque directions of two opposite second SMA wires are the same, and the torque directions of two adjacent second SMA wires are opposite.

[0011] According to some embodiments of the present invention, the carrying portion includes a first conductive plate, the first conductive plate includes a plurality of first conductive units, a plurality of first connection positions are arranged in a one-to-one correspondence with a plurality of first conductive units, and the first connection positions are arranged in the first conductive units and are located at a side position of the carrying portion.

[0012] According to some embodiments of the present invention, the fixing portion includes a second conductive plate, the second conductive plate includes a plurality of second conductive units, the plurality of elastic arms are arranged in one-to-one correspondence with the plurality of second conductive units, and one end of the elastic arm is fixedly connected to the second conductive unit.

[0013] According to some embodiments of the present invention, the fixing portion also includes a fixing plate, the fixing plate is provided with a plurality of connecting ends, the plurality of connecting ends are arranged in a one-to-one correspondence with the plurality of elastic arms, and the connecting ends are arranged on one side of the fixing plate opposite to the elastic arms; a plurality of the first SMA wires are arranged in a one-to-one correspondence with the plurality of elastic arms, one end of the first SMA wire is connected to the elastic arm, and the other end of the first SMA wire is connected to the connecting end.

[0014] According to some embodiments of the present invention, a plurality of through slots are further provided on one side where the movable portion is connected to the fixed portion, and one of the first SMA wires is passed through one of the through slots.

[0015] According to some embodiments of the present invention, four of the elastic arms and four of the first SMA wires are provided, and the four elastic arms are provided in one-to-one correspondence with the four first SMA wires; the four elastic arms are provided adjacent to each other in pairs at two opposite diagonals of the fixing portion.

[0016] A camera module according to an embodiment of a second aspect of the present invention comprises an anti-shake actuating module according to an embodiment of the first aspect of the present invention.

[0017] The camera module according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned anti-shake actuating module, independent control of translation and rotation can be achieved, the control difficulty can be reduced, the control algorithm can be simplified, and the shake correction of the anti-shake actuating module can be more accurate and timely; and the structure is simple and compact, and at the same time has a longer translation drive stroke, which can better meet the shake correction needs under strong shake conditions.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0020] Figure 1 Overall schematic diagram of the anti-shake actuator module according to an embodiment of the present invention;

[0021] Figure 2 Exploded view of the anti-shake actuator module according to an embodiment of the present invention;

[0022] Figure 3 Structural schematic diagram of the rotary actuator of the anti-shake actuator module according to an embodiment of the present invention;

[0023] Figure 4 Exploded view of the rotary actuator of the anti-shake actuator module according to an embodiment of the present invention;

[0024] Figure 5 Structural schematic diagram of the bearing part of the rotary actuator of the anti-shake actuator module according to an embodiment of the present invention;

[0025] Figure 6 Structural schematic diagram of the translational actuator of the anti-shake actuator module according to an embodiment of the present invention;

[0026] Figure 7 Exploded view of the translational actuator of the anti-shake actuator module according to an embodiment of the present invention.

[0027] Reference numerals: translational actuator 100, movable part 110, through groove 111, fixed part 120, elastic arm 121, second conductive plate 122, second conductive unit 1221, fixing plate 123, connection end 1231, first SMA wire 130, rotary actuator 200, bearing part 210, first connection position 211, first conductive plate 212, first conductive unit 2121, rotating part 220, second connection position 221, connection groove 222, fixed plate 223, fan blade 224, connecting arm 230, second SMA wire 240. Detailed implementation manners

[0028] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, and understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] The anti-shake actuation module according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0033] As Figure 1 shown, the anti-shake actuation module according to an embodiment of the present invention includes a translation actuator 100 and a rotation actuator 200. The translation actuator 100 includes a movable part 110, a fixed part 120, and a first SMA wire 130. The movable part 110 is movably arranged on the fixed part 120. The fixed part 120 is provided with an elastic arm 121. The free end of the elastic arm 121 abuts against the movable part 110. One end of the first SMA wire 130 is connected to the fixed part 120, and the other end of the first SMA wire 130 is connected to the elastic arm 121. And the distance from the connection point of the first SMA wire 130 and the elastic arm 121 to the fixed end of the elastic arm 121 is less than the arm length of the elastic arm 121. The first SMA wire 130 is used to drive the elastic arm 121 to push the movable part 110 to translate; the rotation actuator 200 is arranged on the movable part 110 and is used to drive the image sensor module to rotate.

[0034] As Figure 1 and Figure 6As shown in the figure, the fixed part 120 is square, and the movable part 110 is movably arranged on the fixed part 120. The movable part 110 can be driven on the fixed part 120 to slide along the X-axis or Y-axis direction of the plane where the fixed part 120 is located; the elastic arm 121 includes a fixed part and a deformed part. The fixed part is the fixed end of the elastic arm 121, and the deformed part is the free end of the elastic arm 121. The elastic arm 121 is connected to the fixed part 120 through the fixed part; the fixed part and the deformed part are connected to form a complete L-shaped elastic arm 121, and the length of the fixed part is less than the length of the deformed part. The fixed part of the elastic arm 121 is perpendicular to the plane where the fixed part 120 is located, and the deformed part of the elastic arm 121 abuts against the side of the movable part 110. One end of the first SMA wire 130 is connected to a point on the deformed part close to the fixed part, and the other end is connected to the fixed part 120. By energizing one end of the first SMA wire 130, the first SMA wire 130 is controlled to contract and pull the free end of the elastic arm 121 towards the movable part 110, so as to control the elastic arm 121 to drive the movable part 110 to translate. The rotary actuator 200 is arranged on the movable part 110 of the translation actuator 100. The rotary actuator 200 moves together with the translation of the movable part 110. At the same time, the rotary actuator 200 drives the image sensor module to rotate. The two are combined to correct the offset and deflection that occur when the lens shakes at the same time.

[0035] Among them, the elastic arms 121 and the first SMA wires 130 are arranged in one-to-one correspondence. There can be multiple groups of elastic arms 121 and first SMA wires 130. Through the cooperation of multiple groups of elastic arms 121 and first SMA wires 130 in different directions, the translation and reset of the movable part 110 are realized. Among them, the SMA wire is a shape memory alloy wire. By controlling the resistance of the SMA wire, the length of the SMA wire can be accurately controlled.

[0036] According to the anti-shake actuator module of the present invention, the rotary actuator 200 is fixedly connected to the movable part 110 of the translation actuator 100, and the image sensor module is arranged on the rotary actuator 200. The translation actuator 100 drives the rotary actuator 200 and the image sensor module to translate, realizing translation correction when the lens shakes. The rotary actuator 200 is used to drive the image sensor module to rotate, realizing rotation correction when the lens shakes. The rotary actuator 200 and the translation actuator 100 respectively control the rotation of the image sensor module and the translation of the lens module and the image sensor module, which can reduce the control difficulty, simplify the control algorithm, and make the shake correction of the anti-shake actuator module more accurate and timely; the translation actuator 100 has a simple and compact structure, saves space, and drives the movable part 110 to translate by pulling the elastic arm 121 with the SMA wire, which has a larger driving stroke than directly driving the movable part 110 with the SMA wire, and can meet the translation correction under strong shaking conditions.

[0037] As Figure 3 shown, in some specific embodiments of the present invention, the rotary actuator 200 includes a bearing part 210, a rotating part 220, a plurality of connecting arms 230 and a plurality of second SMA wires 240; one side of the rotating part 220 is fixedly connected to the movable part 110, and the bearing part 210 is movably connected to the other side of the rotating part 220; the bearing part 210 is provided with a plurality of first connection positions 211, the side of the rotating part 220 is provided with a plurality of second connection positions 221, and the plurality of second connection positions 221 correspond to the plurality of first connection positions 211 one by one. The rotating part 220 is provided with a plurality of connection grooves 222, and the plurality of connection grooves 222 are arranged around the axis of the rotating part 220; the connecting arms 230 correspond to the connection grooves 222 one by one, the connecting arms 230 are arranged in the connection grooves 222, and one end of the connecting arm 230 is connected to the middle of the rotating part 220, and the other end of the connecting arm 230 is connected to the bearing part 210; the number of the second SMA wires 240 corresponds to the first connection positions 211, and both ends of each second SMA wire 240 are respectively connected to a pair of first connection positions 211 and second connection positions 221.

[0038] As Figure 2 , Figure 3 and Figure 4As shown, the bearing part 210 is a square thin plate; the rotating part 220 is a thin plate, and the rotating part 220 includes a fixed plate 223 and four fan blades 224. The fixed plate 223 is circular, and the fan blades 224 are trapezoidal. The shorter ends of the bases of the four fan blades 224 are evenly connected to the outside of the fixed plate 223 around the axis of the fixed plate 223, and the fixed plate 223 and the fan blades 224 are connected to form a complete whole. One side of the rotating part 220 is fixedly connected to the movable part 110 of the translation actuator 100, and the bearing part 210 is movably connected to the other side of the rotating part 220, and the axes of the rotating part 220 and the bearing part 210 are aligned; a number of bearings are provided between the bearing part 210 and the rotating part 220, and through the setting of the bearings, the bearing part 210 can rotate relative to the rotating part 220 better. A connecting groove 222 is formed between every two fan blades 224. The connecting grooves 222 are evenly arranged around the axis in the rotating part 220. The connecting grooves 222 are strip-shaped. One end of the connecting groove 222 is connected to the fixed plate 223 of the rotating part 220, and the other end of the connecting groove 222 extends towards the outside of the rotating part 220 and communicates with the outside; wherein, the function of the connecting groove 222 is to provide a deformation space for the connecting arm 230. In other embodiments of the present invention, in addition to being strip-shaped, the connecting groove 222 can also be other shapes that can play the same role. The connecting arms 230 are arranged in one-to-one correspondence with the connecting grooves 222, and the connecting arms 230 have elastic potential energy; the connecting arms 230 are arranged at the middle positions of the connecting grooves 222, and a gap is left between the connecting grooves 222 and the connecting arms 230 for the connecting arms 230 to deform; one end of the connecting arm 230 is connected to the middle part of the rotating part 220, and the other end of the connecting arm 230 is arranged on the bearing part 210 and outside the connecting groove 222; through this setting, the connecting arms 230 have enough length, and a smaller driving force can make them deform, completing the rotation of the bearing part 210 relative to the rotating part 220, and at the same time having more elastic potential energy, enabling the rotating part 220 to reset faster. Among them, in other embodiments of the present invention, the number of the connecting grooves 222 can be any number of at least two, such as two, three, four, etc., and the number of the connecting arms 230 corresponds to the number of the connecting grooves 222. Among them, in addition to being circular or square, the fixed plate 223 can also be any regular polygon such as an equilateral triangle or a regular pentagon; in addition to being trapezoidal, the fan blades 224 can also be set into various shapes according to needs as long as they can form a regular figure with the fixed plate 223.

[0039] As Figure 3As shown, the second connection position 221 is provided at one end of the outer side of the rotating part 220. The first connection position 211 corresponding to the second connection position 221 is provided at the edge position of the bearing part 210 and at the other end of the outer side of the rotating part 220. Both ends of the second SMA wire 240 are respectively connected to the second connection position 221 and the first connection position 211, and the second SMA is located between the edge of the bearing part 210 and the outer side of the rotating part 220. At least two groups of the first connection position 211, the second connection position 221 and the second SMA wire 240 are provided, which are respectively used to drive the bearing part 210 to rotate clockwise or counterclockwise.

[0040] Through the movable connection between the bearing part 210 and the rotating part 220, the connecting arm 230 is fixed and positioned. Driven by the second SMA wire 240, the bearing part 210 can rotate around the rotation center relative to the rotating part 220 of the bearing part 210. The structure is simple and space-saving; the bearing part 210 and the rotating part 220 can be fixed part and rotating part respectively according to the installation requirements, providing more installation options and being convenient for installation; by energizing the second SMA wire 240 to control the length change of the second SMA wire 240, the rotation of the bearing part 210 is controlled. Using the second SMA wire 240 as the drive simplifies the structure of the actuator, and has low power consumption and large driving force, and can better compensate for the lens shake.

[0041] As Figure 3 shown, in some specific embodiments of the present invention, the connecting arm 230 is provided with a torsion part, and the torsion part is formed by twisting a section of the connecting arm 230. Specifically, the torsion part is formed by twisting a section of the connecting arm 230 close to the end connected to the rotating part 220, and the plane orientation of the torsion part is perpendicular to the plane orientation of the rotating part 220; wherein, the length position of the torsion part on the connecting arm 230 can be set according to specific requirements. Through this setting, the plane orientation of the torsion part of the connecting arm 230 is consistent with the rotation direction of the bearing part 210, thereby increasing the flexibility of the connecting arm 230. When the bearing part 210 rotates relative to the rotating part 220, the setting of the torsion part can reduce the force required for the connecting arm 230 to bend followingly.

[0042] As Figure 3 and Figure 4As shown, in some specific embodiments of the present invention, the rotating part 220 is provided with four connecting grooves 222, and the four connecting grooves 222 are evenly arranged around the axis of the rotating part 220; correspondingly, there are four connecting arms 230, and the four connecting arms 230 are respectively arranged in the four connecting grooves 222; there are four second SMA wires 240, and the four second SMA wires 240 are respectively located on different sides of the bearing part 210; the torque directions of two opposite second SMA wires 240 are the same, and the torque directions of two adjacent second SMA wires 240 are opposite. The four second SMA wires 240 are respectively located at the four side positions of the square bearing part 210. The adjacent ends of two of the second SMA wires 240 are located at a corner of the bearing part 210 and are connected to the bearing part 210, and the other two ends are respectively connected to the outer side of the rotating part 220; the adjacent ends of the other two second SMA wires 240 are located at a corner of the bearing part 210 and are connected to the bearing part 210, and are opposite to the positions of the adjacent ends of the other two second SMA wires 240; the torque directions of the two second SMA wires 240 located at the opposite side positions of the bearing part 210 are the same, and the torque directions of the two second SMA wires 240 located at the adjacent side positions of the bearing part 210 are opposite. Through this setting, a sufficient large driving force is applied to the rotating part 220 or the bearing part 210, so as to better control the rotation of the rotating part 220 or the bearing part 210. Among them, in other embodiments of the present invention, the second SMA wires 240 can also be set to two according to needs. The two second SMA wires 240 are adjacently arranged at a corner of the bearing part 210, and the torque directions are opposite; the two second SMA wires 240 can also be respectively arranged on the opposite sides of the bearing part 210, and the torque directions are opposite. In other embodiments, the number of the connecting arms 230 can be set to two, three or any other number in addition to four, and the number of the connecting grooves 222 corresponds to the number of the connecting arms 230.

[0043] Through the central symmetric arrangement of the four connecting grooves 222, the four connecting arms 230 and the four second SMA wires 240, the connection between the rotating part 220 and the bearing part 210 can be ensured to be more stable; when the bearing part 210 rotates relative to the rotating part 220, it can better rotate around its own axis, and the force is more uniform and stable during the process that the bearing part 210 drives the connecting arm 230 to bend and the connecting arm 230 restores under the elastic stress to drive the bearing part 210 to reset.

[0044] As Figure 5As shown, in some specific embodiments of the present invention, the bearing part 210 includes a first conductive plate 212. The first conductive plate 212 includes a plurality of first conductive units 2121. A plurality of first connection positions 211 are arranged in one-to-one correspondence with the plurality of first conductive units 2121. The first connection positions 211 are arranged in the first conductive units 2121 and are located at the side position of the bearing part 210. Through the arrangement of the first conductive units 2121, one-to-one power supply between the first conductive units 2121 and the first connection positions 211 is realized, and the current of each first connection position 211 can be controlled more simply and effectively. Thus, the second SMA wires 240 can be powered one-to-one through the first connection positions 211, and each second SMA wire 240 can be better controlled.

[0045] As Figure 7 shown, in some specific embodiments of the present invention, the fixing part 120 includes a second conductive plate 122. The second conductive plate 122 includes a plurality of second conductive units 1221. A plurality of elastic arms 121 are arranged in one-to-one correspondence with the plurality of second conductive units 1221. One end of the elastic arm 121 is fixedly connected to the second conductive unit 1221. Through the arrangement of the second conductive units 1221, one-to-one power supply between the second conductive units 1221 and the elastic arms 121 is realized, and the current of each elastic arm 121 can be controlled more effectively and simply. One first SMA wire 130 is connected to one elastic arm 121, so as to control the current of each first SMA wire 130 separately, and thus the expansion and contraction of each first SMA wire 130 can be accurately controlled separately.

[0046] As Figure 6 and Figure 7 shown, in some specific embodiments of the present invention, the fixing part 120 further includes a fixing plate 123. The fixing plate 123 is provided with a plurality of connection ends 1231. The plurality of connection ends 1231 are arranged in one-to-one correspondence with the plurality of elastic arms 121. The connection ends 1231 and the elastic arms 121 are oppositely arranged on one side of the fixing plate 123; a plurality of first SMA wires 130 are arranged in one-to-one correspondence with the plurality of elastic arms 121. One end of the first SMA wire 130 is connected to the elastic arm 121, and the other end of the first SMA wire 130 is connected to the connection end 1231.

[0047] As Figure 6 and Figure 7As shown in the figure, the fixed part 120 includes a second conductive plate 122 and a fixing plate 123. The fixing plate 123 is disposed on the second conductive plate 122, and the outer contours of the second conductive plate 122 and the fixing plate 123 are the same square. The movable part 110 is movably disposed on the fixing plate 123. Two adjacent connection ends 1231 are disposed at two opposite diagonal corners of the fixing plate 123, and each connection end 1231 is located at one end of a different side edge of the fixing plate 123. Four elastic arms 121 are disposed on the second conductive plate 122. The four connection ends 1231 correspond to the four elastic arms 121 one by one, and each group of corresponding elastic arms 121 and connection ends 1231 are respectively located on opposite side edges of the fixed part 120. Four first SMA wires 130 are disposed corresponding to the four groups of opposite elastic arms 121 and connection ends 1231 one by one. Two ends of the first SMA wire 130 are respectively connected to the elastic arm 121 and the connection end 1231, and each first SMA wire 130 intersects with each other and does not contact. Through the setting of the connection end 1231, the wiring and installation connection of the first SMA wire 130 can be carried out more conveniently and simply. At the same time, the structure of the translation actuator 100 is made more compact, saving space.

[0048] As Figure 6 and Figure 7 shown, in some specific embodiments of the present invention, a plurality of through slots 111 are further disposed on a side of the movable part 110 connected to the fixed part 120, and a first SMA wire 130 is disposed through a through slot 111. The movable part 110 is provided with four through slots 111. The through slots 111 are located on a side of the movable part 110 connected to the fixed part 120, and the positions of the four through slots 111 respectively correspond to the four first SMA wires 130. Among them, in other embodiments, the number of through slots 111 may be any number corresponding to the number of the first SMA wires 130, such as two or three in addition to four. Through the setting of the through slots 111, the first SMA wire 130 can be disposed between the movable part 110 and the fixed part 120 without affecting the normal operation of the first SMA wire 130, making the structure of the translation actuator 100 more compact, reducing the volume of the translation actuator 100, and thus reducing the overall volume of the anti-shake actuator module.

[0049] As Figure 6 shown, in some specific embodiments of the present invention, both the elastic arms 121 and the first SMA wires 130 are provided with four. The four elastic arms 121 are disposed corresponding to the four first SMA wires 130 one by one; the four elastic arms 121 are respectively disposed at two opposite diagonal corners of the fixed part 120 adjacent to each other.

[0050] Four elastic arms 121 are respectively arranged at two opposite diagonal corners of the fixed part 120 adjacent to each other in pairs, and the four elastic arms 121 are respectively located on the four side edges of the fixed part 120; four first SMA wires 130 are arranged in one-to-one correspondence with four groups of opposite elastic arms 121, and both ends of the first SMA wire 130 are respectively connected to the elastic arm 121 and the fixed part 120, and the first SMA wire 130 is parallel to the side edge of the fixed part 120. The specific working process is as follows: when controlling the translation of the movable part 110, two opposite elastic arms 121 move towards the movable part 110 simultaneously under the drive of the first SMA wire 130 to clamp the movable part 110; at this time, one of the other two elastic arms 121 pushes the movable part 110 under the drive of the first SMA wire 130, so that the movable part 110 can be stably pushed along a straight line direction, thereby realizing driving the movable part 110 to translate along the X-axis direction or the Y-axis direction of the plane where the fixed part 120 is located. Through this setting, the translation of the movable part 110 on the fixed part 120 can be controlled efficiently and stably, and it is not easy to skew, which is beneficial to efficiently and accurately compensating for the translation of the lens shake.

[0051] The camera module according to the second aspect embodiment of the present invention includes the anti-shake actuation module according to the first aspect embodiment of the present invention above.

[0052] The camera module according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above anti-shake actuation module, by accurately and effectively compensating for the translation and rotation of the lens shake at the same time, and the structure of the anti-shake actuation module is compact, the volume of the camera module can be effectively reduced; by using the SMA wire as the drive, the translation or rotation of the lens can be controlled more precisely, and no excessive magnetism will be generated to interfere with the camera module.

[0053] The other constitutions and operations of the camera device according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0054] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An anti-shake actuator module, characterized in that, it includes: A translation actuator, the translation actuator includes a movable part, a fixed part and a first SMA wire. The movable part is movably arranged on the fixed part. The fixed part is provided with an elastic arm. The free end of the elastic arm abuts against the movable part. One end of the first SMA wire is connected to the fixed part, and the other end of the first SMA wire is connected to the elastic arm. And the distance from the connection point of the first SMA wire and the elastic arm to the fixed end of the elastic arm is less than the arm length of the elastic arm. The first SMA wire is used to drive the elastic arm to push the movable part to translate. The free end of the elastic arm is the deformed part, and the fixed end of the elastic arm is the fixed part, and the length of the fixed part is less than the length of the deformed part; There are four elastic arms and four first SMA wires, and the four elastic arms and the four first SMA wires are arranged in one-to-one correspondence; The four elastic arms are respectively arranged at two opposite diagonals of the fixed part adjacent to each other; A rotation actuator, the rotation actuator is arranged on the movable part and fixedly connected to the movable part. The rotation actuator moves together with the translation of the movable part, and the rotation actuator is used to drive the image sensor module to rotate; The rotation actuator includes a bearing part, a rotating part, a plurality of connecting arms and a plurality of second SMA wires; One side of the rotating part is fixedly connected to the movable part, the bearing part is movably connected to the other side of the rotating part, one end of the connecting arm is connected to the middle of the rotating part, the other end of the connecting arm is connected to the bearing part, and the second SMA wire is located between the edge of the bearing part and the outer side of the rotating part.

2. The anti-shake actuator module according to claim 1, characterized in that, The bearing part is provided with a plurality of first connection positions, the side of the rotating part is provided with a plurality of second connection positions, and the plurality of second connection positions and the plurality of first connection positions are in one-to-one correspondence. The rotating part is provided with a plurality of connection grooves, and the plurality of connection grooves are arranged around the axis of the rotating part; The connecting arms and the connection grooves are in one-to-one correspondence, and the connecting arms are arranged in the connection grooves; The number of the second SMA wires corresponds to the first connection positions, and both ends of each second SMA wire are respectively connected to a pair of the first connection positions and the second connection positions.

3. The anti-shake actuator module according to claim 2, characterized in that, The connecting arm is provided with a torsion part, and the torsion part is formed by twisting a section of the connecting arm.

4. The anti-shake actuator module according to claim 2, characterized in that, The rotating part is provided with four connection grooves, and the four connection grooves are evenly arranged around the axis of the rotating part; There are four corresponding connecting arms, and the four connecting arms are respectively arranged in the four connection grooves; There are four second SMA wires, and the four second SMA wires are respectively located on different sides of the bearing part; The torque directions of two opposite second SMA wires are the same, and the torque directions of two adjacent second SMA wires are opposite.

5. The anti-shake actuation module according to claim 2, wherein, the bearing part includes a first conductive plate, the first conductive plate includes a plurality of first conductive units, a plurality of the first connection positions are arranged in one-to-one correspondence with the plurality of first conductive units, and the first connection positions are arranged in the first conductive units and located at the side position of the bearing part.

6. The anti-shake actuation module according to claim 1, wherein, the fixing part includes a second conductive plate, the second conductive plate includes a plurality of second conductive units, a plurality of the elastic arms are arranged in one-to-one correspondence with the plurality of second conductive units, and one end of the elastic arm is fixedly connected to the second conductive unit.

7. The anti-shake actuation module according to claim 1, wherein, the fixing part further includes a fixing plate, the fixing plate is provided with a plurality of connection ends, a plurality of the connection ends are arranged in one-to-one correspondence with the plurality of elastic arms, and the connection ends and the elastic arms are oppositely arranged on one side of the fixing plate; a plurality of the first SMA wires are arranged in one-to-one correspondence with the plurality of elastic arms, one end of the first SMA wire is connected to the elastic arm, and the other end of the first SMA wire is connected to the connection end.

8. The anti-shake actuation module according to claim 1 or 7, wherein, a plurality of through grooves are further provided on one side of the movable part connected to the fixing part, and one first SMA wire is disposed through one of the through grooves.

9. An imaging module, wherein, it includes the anti-shake actuation module according to any one of claims 1 to 8.

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