Anti-shake structure, anti-shake system and camera device

Abstract

The present invention provides an anti-shake structure, an anti-shake system and a camera device. The anti-shake structure includes: a base; a shell, the shell cover is arranged on the outside of the base and forms a receiving cavity between the two; a lens support body, the lens support body is arranged in the receiving cavity; at least four groups of PIN end pin structures, at least four groups of PIN end pin structures are located in the receiving cavity, and at least one group of PIN end pin structures are correspondingly arranged at each side of the base, each group of PIN end pin structures includes a first PIN end pin, a second PIN end pin, and a pressing plate, and the first PIN end pin and the second PIN end pin are independently arranged on the base, and the pressing plate is arranged on the lens support body; multiple SMA wires, each group of PIN end pin structures is correspondingly connected to two SMA wires arranged crosswise with each other, wherein one SMA wire connects the first PIN end pin to the pressing plate, and the other SMA wire connects the second PIN end pin to the pressing plate. The present invention solves the problem of complex internal structure of the anti-shake structure in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of camera technology, and in particular to an anti-shake structure, an anti-shake system and a camera device. Background Art

[0002] The photos taken by mobile phones and other electronic devices during the shooting process are sometimes blurry, that is, the pictures taken are not clear enough, and ghosting or blurring occurs. These reasons, in addition to occasional loss of focus (that is, the camera lens fails to focus properly), are largely caused by slight shaking when the scene is exposed. Generally speaking, this very slight shaking phenomenon often occurs under handheld conditions. In this context, the proposals for OIS (Optical Image Stabilization System) optical image stabilization function have also increased, and micro optical image stabilization technology has gradually been adopted by various high-end mobile phones, hoping to effectively reduce the probability of taking blurry photos in low-light environments and effectively solve the troubles caused by hand shaking during shooting. However, compared with general autofocus motors, products with OIS optical image stabilization function have a more complex structure, lower production efficiency and yield, so development is somewhat difficult.

[0003] The main function of the OIS anti-shake structure is: when the camera device is powered on and running, if there is lens deviation caused by shaking in the X and Y axis directions, the deviation of the X and Y axes can be corrected. Through automatic correction and rapid resetting of the deviation, high-quality and stable imaging effects can be finally obtained.

[0004] At present, there are two basic and commonly used OIS technologies, one is SHIFT (translation) method, and the other is TITLE (tilt-shift) method. The working principle of the SHIFT method is that there are two sets of motors on the entire platform, that is, the X and Y axes control the jitter, and the Z axis controls the AF. The driving method of the two sets of motors is coil drive. The two sets of coils at the bottom are recognized by the Hall element. The working principle of the Z axis is the same as the normal AF working principle. The working principle of the optical image stabilization function of the TITLE method is that there are four sets of coils on a moving carrier, and the changes in the optical axis during the AF process are controlled by energizing the four sets of coils separately. In terms of application, SHIFT and TITLE can both achieve the effect of optical image stabilization in terms of anti-shake function. Currently, mobile phones on the market basically use one of these two methods.

[0005] From the perspective of size. In the SHIF method, due to the requirement of high pixels, the lens is relatively large overall. At the same time, due to the calculation and adjustment of AF when X, Y and Z axes are used for anti-shake, a certain amount of space must be left on the Z axis. Therefore, the overall structure of the SHIFT method OIS is relatively large. The TITLE method OIS basically only controls the movement of the four sets of coils on the motor body, so the overall size can be more compact.

[0006] From the perspective of mass production. The SHIFT method can use high-end PCB to replace the X and Y coils, so the coils can be made on the PCB board. Therefore, the SHIFT method OIS is relatively simple in assembly process and suitable for mass production, with high integration. However, the overall process of the TITLE method motor is complicated, and welding requires multiple solder joints, which seriously affects the assembly mass production yield and mass production.

[0007] Analyze from the perspective of cost and anti-shake effect. The SHIFT motor has a relatively high component cost. It has four suspension wires, a PCB, a Hall element, and four more magnets than the TITLE. The overall requirement for the bottom PCB is relatively high. The thrust of the X and Y axis motors can be adjusted. The thrust is large, and the anti-shake effect is better than the TITLE method, but the volume is larger than the normal AF. The cost of the TITLE motor components is relatively low, but it is more difficult to control the yield of the finished product. The precision requirements for the components are very high. There is also a contradiction between the thrust and the TITLE adjustment angle. If the thrust is large, the gap between the magnet and the coil must be large, resulting in the magnetic circuit cannot be reasonably used, and the overall power consumption requirements are relatively large.

[0008] As can be seen from the above, the SHIFT (translation type) and TITLE (axis shift type) OIS motors in the prior art have certain complexities and their own disadvantages in the overall anti-shake function structure. Summary of the invention

[0009] The main purpose of the present invention is to provide an anti-shake structure, an anti-shake system and a camera device to solve the problem of complex internal structure of the anti-shake structure in the prior art.

[0010] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an anti-shake structure, comprising: a base; a shell, the shell cover is arranged on the outside of the base and forms a accommodating cavity therebetween; a lens support body, the lens support body is arranged in the accommodating cavity; at least four groups of PIN end pin structures, at least four groups of PIN end pin structures are located in the accommodating cavity, and at least one group of PIN end pin structures is correspondingly arranged at each side edge of the base, each group of PIN end pin structures includes a first PIN end pin, a second PIN end pin, and a pressing plate, and the first PIN end pin and the second PIN end pin are independently arranged on the base, and the pressing plate is arranged on the lens support body; a plurality of SMA wires, each group of PIN end pin structures is correspondingly connected to two SMA wires arranged crosswise with each other, wherein one SMA wire connects the first PIN end pin to the pressing plate, and the other SMA wire connects the second PIN end pin to the pressing plate.

[0011] Further, the first PIN terminal pin and the second PIN terminal pin are located at the side corners of the base; and / or the pressing sheet is located at the side corners of the lens support body.

[0012] Furthermore, two adjacent groups of PIN terminal structures are mirror-imaged along a diagonal line of the base.

[0013] Furthermore, the first end of the first PIN terminal and the first end of the second PIN terminal both extend outward from the accommodating cavity.

[0014] Furthermore, in the same group of PIN terminal structures, the second end of the first PIN terminal and the second end of the second PIN terminal are both connected to different SMA wires as connecting ends, and the second end of the first PIN terminal and the second end of the second PIN terminal are spaced apart in the axial direction of the lens support body to form a height difference, and the two connecting ends of the pressing sheet have a height difference in the axial direction of the lens support body and are respectively connected to different SMA wires.

[0015] Furthermore, a line connecting the second end of the first PIN terminal and the second end of the second PIN terminal is parallel to the axial direction of the lens support body; and / or a line connecting the two connecting ends of the pressing sheet is parallel to the axial direction of the lens support body.

[0016] Furthermore, the middle portion of the pressing sheet has an extension section for fixing with the lens support body.

[0017] Furthermore, at least one first heat riveting column is arranged on the lens support body and / or the base, and at least one of the pressing sheet, the first PIN end pin and the second PIN end pin is connected to the first heat riveting column by heat riveting.

[0018] Furthermore, the base has a boss extending toward one side of the top surface of the shell, and the lateral surface of the boss has a groove for accommodating the first PIN terminal and the second PIN terminal, and the groove extends to the bottom surface of the base so that the first end of the first PIN terminal and the first end of the second PIN terminal extend from the accommodating cavity.

[0019] Furthermore, there are two bosses, and the two bosses are respectively located at a group of oppositely arranged corners of the base, and a groove is respectively arranged on the two lateral surfaces of each boss.

[0020] Furthermore, the base has a boss extending toward one side of the top surface of the shell, and a guide groove is provided on the side of the boss facing the lens support body, and the extension direction of the guide groove is parallel to the axial direction of the lens support body. A guide column is provided at the lateral edge of the lens support body, and the guide column is located in the guide groove and can move along the guide groove, and there is a movement gap between the guide column and the guide groove.

[0021] Furthermore, the top surface of the guide column is higher than the top surface of the lens support body.

[0022] Furthermore, at least one top-limiting column is arranged on the top surface of the lens support body, and an assembly gap is reserved between the top-limiting column and the inner surface of the shell to form a movement gap between the upper surface of the lens support body and the inner surface of the shell.

[0023] Furthermore, a guide column is provided at the lateral edge of the lens support body, the top surface of the guide column is higher than the top surface of the lens support body, and the top surface of the guide column is flush with the top surface of the top-contact limiting column.

[0024] Furthermore, there are two top-contact limiting posts, which are respectively located at a group of oppositely disposed corners of the lens support body; there are two guide posts, which are respectively located at another group of oppositely disposed corners of the lens support body.

[0025] Furthermore, at least a portion of the pressing plate is embedded in the lens support body, and the connecting end of the pressing plate is located outside the lens support body; and / or at least a portion of the first PIN terminal is embedded in the base, and the connecting end of the first PIN terminal is located outside the base; and / or at least a portion of the second PIN terminal is embedded in the base, and the connecting end of the second PIN terminal is located outside the base.

[0026] Furthermore, the anti-shake structure also includes at least one spring, which is located between the base and the lens support body, and one end of the spring is connected to the base, and the other end of the spring is connected to the lens support body.

[0027] Furthermore, at least one second heat-riveted post is provided on the lens support body and / or the base, and at least one end of the spring is connected to the second heat-riveted post by heat riveting.

[0028] Furthermore, there are two springs, both of which are arc-shaped and are arranged between the base and the lens support body in an angularly symmetrical manner, and the ends of the two springs close to each other are respectively connected to the lens support body and the base.

[0029] Furthermore, a side of the base facing the spring is provided with a relief groove to provide expansion space for the spring; and / or a side of the lens support body facing the spring has a stepped relief surface to provide deformation space for the spring.

[0030] Furthermore, the lens support body has a stepped relief surface on one side facing the spring, and one end of the spring is connected to the stepped relief surface to be spaced apart from the base.

[0031] Furthermore, a guide column is arranged at the lateral edge of the lens support body, and a side of the guide column facing the spring has a yielding portion to avoid interference with the spring.

[0032] According to another aspect of the present invention, an anti-shake system is provided, comprising the anti-shake structure described above.

[0033] According to another aspect of the present invention, there is provided a camera device comprising the above-mentioned anti-shake system.

[0034] Applying the technical solution of the present invention, the anti-shake structure in the present application includes: a base, a shell, a lens support body, at least four groups of PIN end pin structures and multiple SMA wires. The shell cover is arranged on the outside of the base and forms a receiving cavity between the two; the lens support body is arranged in the receiving cavity; at least four groups of PIN end pin structures are located in the receiving cavity, and at least one group of PIN end pin structures are correspondingly arranged at each side of the base, each group of PIN end pin structures includes a first PIN end pin, a second PIN end pin, and a pressing plate, and the first PIN end pin and the second PIN end pin are independently arranged on the base, and the pressing plate is arranged on the lens support body; each group of PIN end pin structures is correspondingly connected to two SMA wires arranged crosswise with each other, wherein one SMA wire connects the first PIN end pin with the pressing plate, and the other SMA wire connects the second PIN end pin with the pressing plate.

[0035] When the anti-shake structure of the above structure is used, the pressing plate arranged on the lens support body and the first PIN end pin and the second PIN end pin fixed on the base are connected respectively by using SMA wires, so that the lens support body can be controlled by adjusting the length of the SMA wires themselves in the anti-shake structure, and the movement of the lens support body in different directions (X\Y\Z directions) can be achieved. In addition, after the lens support body is driven by the SMA wires, the main components of the anti-shake structure in the present application are the housing, the base, the lens support body, the PIN end pin structure and the SMA wires, so the internal structure of the anti-shake structure becomes simpler, thereby reducing the overall structure of the anti-shake structure while ensuring the normal anti-shake function. And by correspondingly providing at least one set of PIN end pin structures at each side of the base, it can be ensured that the SMA wire drives the lens support body more accurately and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0037] Figure 1 A schematic diagram of an anti-shake structure according to a specific embodiment of the present invention is shown;

[0038] Figure 2 Shows Figure 1 Schematic diagram of the base of the anti-shake structure, the PIN terminal structure and the connection structure of the SMA wire;

[0039] Figure 3 Shows Figure 1A schematic diagram of the connection structure of the base of the anti-shake structure, the lens support body and the PIN terminal structure;

[0040] Figure 4 Shows Figure 1 Exploded diagram of the anti-shake structure in ;

[0041] Figure 5 Shows Figure 1 Schematic diagram of the connection structure of the base and spring of the anti-shake structure;

[0042] Figure 6 A schematic diagram of an anti-shake structure according to another specific embodiment of the present invention is shown;

[0043] Figure 7 Shows Figure 6 Schematic diagram of the connection relationship between the lens support body and the pressing plate;

[0044] Figure 8 Shows Figure 6 Schematic diagram of the connection relationship between the base and the first PIN terminal and the second PIN terminal.

[0045] The above drawings include the following reference numerals:

[0046] 10. Base; 11. convex column; 111. groove; 112. guide groove; 12. yield groove; 20. shell; 30. lens support body; 31. guide column; 311. yield part; 32. top limit column; 33. stepped yield surface; 40. PIN terminal structure; 41. first PIN terminal; 411. first end of the first PIN terminal; 412. second end of the first PIN terminal; 42. second PIN terminal; 421. first end of the second PIN terminal; 422. second end of the second PIN terminal; 43. pressing sheet; 431. extension section; 50. SMA wire; 60. first heat riveting column; 70. spring; 80. second heat riveting column; 90. wire pressing groove. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0049] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0050] In order to solve the problem of complex internal structure of the anti-shake structure in the prior art, the present application provides an anti-shake structure, an anti-shake system and a camera device.

[0051] The camera device includes an anti-shake system, and the anti-shake system includes an anti-shake structure. By using the anti-shake system in the present application, the anti-shake performance of the camera device can be effectively improved to avoid blurry and unclear images taken by the camera device, while effectively reducing the space occupied by the camera device.

[0052] Embodiment 1

[0053] like Figures 1 to 5 As shown, the anti-shake structure in the present application includes a base 10, a housing 20, a lens support body 30, at least four groups of PIN end pin structures 40, a plurality of SMA wires 50 and a spring 70. The housing 20 is disposed on the outside of the base 10 and forms a receiving cavity between the two; the lens support body 30 is disposed in the receiving cavity; at least four groups of PIN end pin structures 40 are located in the receiving cavity, and at least one group of PIN end pin structures 40 is correspondingly disposed at each side of the base 10, each group of PIN end pin structures 40 includes a first PIN end pin 41, a second PIN end pin 42 and a pressing plate 43, and the first PIN end pin 41 and the second PIN end pin 42 are independently disposed on the base 10, and the pressing plate 43 is disposed on the lens support body 30; each group of PIN end pin structures 40 is correspondingly connected to two SMA wires 50 arranged crosswise with each other, wherein one SMA wire 50 connects the first PIN end pin 41 with the pressing plate 43, and the other SMA wire 50 connects the second PIN end pin 42 with the pressing plate 43.

[0054] When the anti-shake structure of the above structure is used, the pressing plate 43 arranged on the lens support body 30 and the first PIN end pin 41 and the second PIN end pin fixed on the base 10 are respectively connected by using SMA wire 50, so that the lens support body 30 can be controlled by adjusting the length of the SMA wire 50 itself in the anti-shake structure to realize the movement of the lens support body 30 in different directions (X\Y\Z three directions).

[0055] It should be pointed out that when the multiple groups of PIN end pin structures 40 provided in this embodiment of the present application move, the lens support body 30 can be driven to be fine-tuned in the three directions of X\Y\Z at the same time. In this way, multi-directional adjustment can be achieved in one step, which greatly saves the adjustment time. The effect of the synchronous action is that it can be adjusted precisely, avoiding the influence of errors when adjusting each direction separately, thereby further improving the adjustment accuracy.

[0056] After the lens support 30 is driven by the SMA wire 50, the main components of the anti-shake structure in the present application are only the housing 20, the base 10, the lens support 30, the PIN terminal structure 40, the SMA wire 50 and the spring 70, so the internal structure of the anti-shake structure becomes simpler, thereby reducing the overall structure of the anti-shake structure while ensuring the normal anti-shake function. In addition, at least one set of PIN terminal structures 40 is correspondingly provided at each side of the base 10, which can ensure that the SMA wire 50 drives the lens support 30 more accurately and stably.

[0057] The SMA wire 50 described in the present invention is a nickel-titanium alloy material. SMA is the abbreviation of Shape Memory Alloy, which means "shape memory alloy". The SMA wire 50 has the characteristics of thermal contraction and cold expansion. When current flows into the SMA wire 50, the SMA wire 50 begins to contract due to heat, overcoming the lateral elastic force; when the current is cut off, the bias elastic force overcomes the wire force of the SMA wire and begins to cold expand. In short, the SMA wire 50 (nickel-titanium alloy) contracts when heated and expands when cold. The material structure changes when electricity is applied, causing the material to deform to achieve the purpose of driving the position of the moving parts.

[0058] Specifically, in the specific process of using the SMA wire 50, according to the characteristics of the SMA wire 50 shrinking and expanding with heat, the length of the SMA wire 50 is changed by changing the size of the current, so as to realize the action of driving the lens support 30, and control the lens support 30 to move in a predetermined direction, that is, the entire lens support 30 is moved at a micro distance to realize the movement of the lens carried by it to change the focal length, and finally achieve the purpose of clear image. Due to the deformation of the SMA wire 50, the resistance of the SMA wire 50 changes. By measuring the resistance of the SMA wire 50, the length of the SMA wire 50 can be accurately calculated, and then the displacement of the lens support 30 in the X\Y\Z axis can be calculated. The external control mechanism is always in the operation control state of the position information. During the operation process, a certain current is input to each PIN terminal structure 40 through the reception, processing and signal feedback of the position information, so that it can be stably controlled to be in the center position of the Z-axis optical axis direction throughout the operation process, and the purpose of fast and accurate focusing is achieved. The present invention utilizes the property characteristics of multiple SMA wires 50 themselves, and is equipped with an overall simple and reasonable design structure. It not only has the function of driving focusing in the Z-axis direction of a common AF motor, but also effectively overcomes the XY-axis position shaking that may occur during operation, and the OIS anti-shake performance is excellent.

[0059] In this embodiment, there are four groups of PIN terminal structures 40 , each corresponding to a side edge of the base 10 .

[0060] exist Figure 2 and Figure 3 In the specific example shown, the first PIN terminal pin 41 and the second PIN terminal pin 42 are located at the side corners of the base 10; and the pressing plate 43 is located at the side corners of the lens support body 30. In this specific embodiment, in the same group of PIN terminal pin structures 40, the first PIN terminal pin 41 and the second PIN terminal pin 42 are located at the side corners of the same base 10, and are located on both sides of the same plane with the pressing plate 43 of the same group. And the second PIN terminal pin 42 is only set next to the first PIN terminal pin 41. In this way, the spacing distance between the pressing plate 43 and the first PIN terminal pin 41 and the second PIN terminal pin 42 is long enough to facilitate the connection of the SMA wire 50. And if the length of the SMA wire 50 is long enough, it can increase sufficient driving force to drive the lens support body 30 to move.

[0061] Of course, the first PIN end pin 41, the second PIN end pin 42, and the pressing plate 43 do not necessarily have to be placed at the corners, but can also be moved to the center of the side of the base 10. Then the length of the SMA wire 50 will change accordingly, which will also have a certain impact on the driving effect of the SMA wire 50 to a certain extent.

[0062] It should also be noted that the second end 412 of the first PIN terminal foot, the second end 422 of the second PIN terminal foot and the pressing plate 43 can also be adjusted accordingly in the axial direction. After the adjustment, the upper and lower wire pressing grooves 90 can be flush with the upper and lower end surfaces of the lens support body 30, but the height of the top of the highest wire pressing groove 90 should not exceed the height of the top contact limit column 32. Furthermore, the wire pressing grooves 90 of the first PIN terminal foot 41 and the second PIN terminal foot 42 and the wire pressing grooves 90 of the pressing plate 43 can also be made according to actual needs. The degree of protrusion should be conducive to the possibility of contact interference between the crossed SMA wires 50, while taking into account the convenience of the actual wire pressing operation. To put it another way, even if the crossed SMA wires 50 are in contact during actual operation, it will not cause a short circuit problem. The outer surface of the SMA wire 50 has an insulating coating, so it will not cause a short circuit problem. The SMA wire 50 located in the wire crimping groove 90 needs to be treated with a deinsulating film in advance so as to achieve electrical connection with the wire crimping section. It is worth noting that the protrusion should not be too arbitrary and should conform to the overall motor miniaturization design concept. Overall, the wire crimping grooves 90 at the upper and lower positions should follow the same height principle in the circumferential horizontal position.

[0063] like Figures 2 to 4 As shown, two adjacent groups of PIN terminal structures 40 are arranged in mirror images along the diagonal line of the base 10 .

[0064] Through such a configuration, when the lens support body 30 is controlled by the SMA wire 50, the overall structure of the anti-shake structure can be ensured to be more stable, and the anti-shake performance of the anti-shake structure can be enhanced to avoid shaking of the lens support body 30 during the stretching of the SMA wire 50.

[0065] Specifically, the first end 411 of the first PIN terminal and the first end 421 of the second PIN terminal both extend outward from the accommodating cavity. By such a configuration, it can be ensured that the first end 411 of the first PIN terminal and the first end 421 of the second PIN terminal can extend out of the housing 20 respectively, and when the anti-shake structure is assembled and installed in the anti-shake system, it can be easier to achieve the electrical connection between the first PIN terminal 41 and the second PIN terminal 42. Moreover, by such a configuration, the first PIN terminal 41 and the second PIN terminal 42 can be plugged in more easily.

[0066] Specifically, in the same group of PIN terminal pin structures 40, the second end 412 of the first PIN terminal pin and the second end 422 of the second PIN terminal pin are both connected to different SMA wires 50 as connection ends, and the second end 412 of the first PIN terminal pin and the second end 422 of the second PIN terminal pin are spaced apart in the axial direction of the lens support body 30 to form a height difference, and the two connecting ends of the pressing plate 43 have a height difference in the axial direction of the lens support body 30 and are respectively connected to different SMA wires 50. Since in this anti-shake structure, each SMA wire 50 needs to be electrically connected and controlled separately, and it is also necessary to ensure that each SMA wire 50 has a certain movement space, so through such a setting, it can be ensured that in the anti-shake structure, different SMA wires 50 will not interfere with each other, and it can also ensure that the terminal pin structure and the arrangement of the SMA wires 50 are more compact and regular. In addition, this arrangement provides enough space for the SMA wire 50 to accommodate a longer SMA wire 50 , thereby increasing the driving force of the SMA wire 50 , thereby ensuring the movement effect of the lens support body 30 .

[0067] like Figure 4 As shown, the second end 412 of the first PIN terminal and the second end 422 of the second PIN terminal are respectively provided with a wire pressing groove 90 for connecting with the SMA wire 50. By such a configuration, it can be ensured that the second end 412 of the first PIN terminal and the second end 422 of the second PIN terminal are connected to the SMA wire 50 more firmly.

[0068] Likewise, a similar wire pressing groove may be provided at the end of the pressing sheet 43 for connecting the SMA wire 50 .

[0069] Optionally, a line connecting the second end 412 of the first PIN terminal and the second end 422 of the second PIN terminal is parallel to the axial direction of the lens support body 30. Figure 2 In the specific embodiment shown, the first PIN terminal pin is one long and the second PIN terminal pin is one short, so as to be staggered by a certain distance in the height direction to form a height difference.

[0070] Optionally, a line between two connecting ends of the pressing piece 43 is parallel to the axial direction of the lens support body 30 .

[0071] Since the first PIN terminal 41 and the second PIN terminal 42 are connected to the pressing plate 43 respectively through different SMA wires 50, such a configuration can make it easier to control the SMA wires 50. In addition, since the entire actuation process of the lens support 30 is controlled by the SMA wires 50, and the movement in the X-axis, Y-axis and Z-axis directions is required during the normal operation of the anti-shake structure, such a configuration can make the lens support 30 move in different directions more accurately, ensuring that no contact is generated during the stretching and contraction of different SMA wires 50.

[0072] Specifically, the middle portion of the pressing piece 43 has an extension section 431 for fixing with the lens support body 30. Since the control of the lens support body 30 by the SMA wire 50 is achieved by pulling the pressing piece 43 disposed on the lens support body 30, such a configuration can ensure that there is a sufficient contact area between the pressing piece 43 and the lens support body 30, thereby avoiding a delay in the control of the lens support body 30 during the stretching or contraction of the SMA wire 50, thereby improving the accuracy of the movement of the lens support body 30.

[0073] Specifically, at least one first heat riveting column 60 is provided on the lens support 30 and / or the base 10, and at least one of the pressing sheet 43, the first PIN end pin 41, and the second PIN end pin 42 is connected to the first heat riveting column 60 by heat riveting. Accordingly, openings that match the first heat riveting column 60 are provided on the pressing sheet 43, the first PIN end pin 41, and the second PIN end pin 42, and the pressing sheet 43, the first PIN end pin 41, and the second PIN end pin 42 can be effectively fixed through the cooperation of the heat riveting column and the opening, so that the pressing sheet 43 and the lens support 30, the first PIN end pin 41 and the base 10, and the second PIN end pin 42 and the base 10 are more closely attached, and the falling off of the pressing sheet 43, the first PIN end pin 41, and the second PIN end pin 42 is effectively prevented.

[0074] like Figures 2 to 5As shown, the base 10 has a boss 11 extending toward one side of the top surface of the housing 20, and the lateral surface of the boss 11 has a groove 111 for accommodating the first PIN terminal 41 and the second PIN terminal 42, and the groove 111 extends to the bottom surface of the base 10 so that the first end 411 of the first PIN terminal and the first end 421 of the second PIN terminal extend from the accommodating cavity. Through such a configuration, the connection between the first PIN terminal 41 and the second PIN terminal 42 and the base 10 can be made more compact, and the first PIN terminal 41 and the second PIN terminal 42 are effectively prevented from protruding from the side of the base 10, so that the housing 20 is easier to process, and it is ensured that the first PIN terminal 41 and the second PIN terminal 42 will not generate friction with the inner wall of the housing 20, and the housing 20 can effectively protect the first PIN terminal 41 and the second PIN terminal 42.

[0075] Specifically, there are two bosses 11, and the two bosses 11 are respectively located at a group of oppositely arranged corners of the base 10, and a groove 111 is respectively arranged on the two lateral surfaces of each boss 11. It should be pointed out that such arrangement is to correspond to the situation where there are four groups of PIN terminal pin structures 40, so that the first PIN terminal pins 41 and the second PIN terminal pins 42 in the four groups of PIN terminal pin structures 40 can be correspondingly arranged on the grooves 111 of the bosses 11. When the number of groups of PIN terminal pin structures 40 increases, the number of bosses 11 can be correspondingly increased.

[0076] like Figure 2 As shown, a guide groove 112 is provided on one side of the convex column 11 facing the lens support body 30, and the extension direction of the guide groove 112 is parallel to the axial direction of the lens support body 30. A guide column 31 is provided at the lateral edge of the lens support body 30, and the guide column 31 is located in the guide groove 112 and can move along the guide groove 112, and there is a movement gap between the guide column 31 and the guide groove 112. In this way, the base 10 can limit the movement of the lens support body 30 through the cooperation of the guide groove 112 and the guide column 31, so as to ensure the accuracy of the focusing of the camera device. The movement gap is set between the guide column 31 and the guide groove 112, in order to reduce the friction between the lens support body 30 and the base 10, so as to ensure that the movement of the lens support body 30 is smoother, so as to ensure the adjustment accuracy. It is particularly important to point out that in the case where there are two convex columns 11, the cooperation between the two guide grooves 112 on the two convex columns 11 and the two guide columns 31 can prevent the lens support body 30 from twisting, so as to ensure the movement stability of the lens support body 30.

[0077] Specifically, the top surface of the guide column 31 is higher than the top surface of the lens support 30. By setting it in this way, when the lens support 30 moves in the Z-axis direction, the lens support 30 will not deviate from the limit range of the base 10, thereby ensuring the accuracy of the anti-shake device.

[0078] Specifically, at least one top-limiting column 32 is provided on the top surface of the lens support body 30 , and an assembly gap is reserved between the top-limiting column 32 and the inner surface of the housing 20 to form a movement gap between the upper surface of the lens support body 30 and the inner surface of the housing 20 .

[0079] It should be noted that the top limit post 32 does not contact the inner surface of the housing 20 (including the top surface and the side surface), and after the lens support body 30 moves to the upper limit travel position of the Z axis required by the specification value, it is preferable to retain a small space distance from the inner surface of the housing 20. The top limit post 32 exists as a mechanical limit mechanism for the maximum displacement allowed by the motor during the upward movement of the Z axis, and also takes into account various special movement possibilities in special occasions (such as accidental falls and impacts, etc.). In this way, even if there is an abnormal movement, the top surface of the top limit post 32 will first contact the inner surface of the housing 20, preventing destructive damage to the internal structure of the motor and avoiding adverse effects on the motor performance.

[0080] Optionally, the top surface of the guide post 31 is flush with the top surface of the top-contacting stop post 32. By setting it in this way, the top surface of the guide post 31 is similar to the top surface of the top-contacting stop post 32, and when the lens support body 30 moves along the Z axis, the guide post 31 and the top-contacting stop post 32 will not contact the inner surface of the housing 20.

[0081] Specifically, there are two top contact limiting posts 32, which are respectively located at a group of oppositely disposed corners of the lens support body 30; there are two guide posts 31, which are respectively located at another group of oppositely disposed corners of the lens support body 30. By such an arrangement, the structure of the lens support body 30 can be ensured to be more symmetrical and stable, and the lens support body 30 can be effectively ensured not to deflect in a certain direction during movement.

[0082] like Figure 4 As shown, the anti-shake structure also includes at least one spring 70, which is located between the base 10 and the lens support body 30, and one end of the spring 70 is connected to the base 10, and the other end of the spring 70 is connected to the lens support body 30. Through such an arrangement, a traction force is generated between the lens support body 30 and the base 10 under the action of the spring 70, so as to ensure that the base 10 and the lens support body 30 are reliably connected. If the length of the SMA wire 50 does not change, due to the performance of the spring 70 itself, it can be ensured that the lens support body 30 is stably connected to the base 10 and will not move at will. And when the SMA wire 50 pulls the lens support body 30 to displace, a reliable traction force is provided to the lens support body 30, so that the movement stability of the lens is better, and shaking and sudden movement are avoided.

[0083] In this embodiment, at least one second heat riveting post 80 is provided on the lens support 30 and / or the base 10, and at least one end of the spring 70 is connected to the second heat riveting post 80 by heat riveting. The heat riveting part can be further glued. By such a configuration, the lens support, the spring 70 and the base 10 can be reliably connected.

[0084] Of course, various improvement measures can be made in the specific implementation structure, such as the position of the opposite surface of the heat riveting column 80, and further making a groove avoidance design for the heat riveting column on the lens support body 30 and / or the base 10. A fine groove that intersects with each other is opened between the two spring holes at the same end to increase the glue adhesion surface, so that the end of the spring 70 and the lens support body 30 and / or the base 10 are more firmly bonded. Of course, a metal steel sheet can be further inserted into the lens support body 30 and / or the base 10 by the INSERT MOLDING method, and the spring 70 and the steel sheet are fixed by laser welding.

[0085] In the assembled state, the multiple SMA wires 50 exert an upward traction force on the lens support body 30, while the spring 70 exerts a downward pulling force on the lens support body 30. The lens support body 30 stays at a position where the upward traction force and the downward pulling force are balanced. The greater the current passed into the PIN end structure 40, the greater the upward traction force, which overcomes the downward pulling force, so that the lens support body 30 moves in the direction of the optical axis. Through the above-mentioned force relationship, the present invention can also design the lens support body 30 as a central structure suspended above the base 10. In a static state, the base 10 exerts a certain pulling effect on the spring 70 in advance. After power is turned on, the starting effect will be more stable and will not cause excessive initial starting movement. In addition, the lens support body 30 is in the middle position of the motor. As long as a certain positive and negative current value is given to the motor, the lens support body 30 can move upward or downward along the optical axis, saving the focusing travel distance, shortening the focusing time, making the focusing speed more agile, and reducing power consumption.

[0086] Optionally, there are two springs 70, both of which are arc-shaped and arranged between the base 10 and the lens support 30 in an angularly symmetrical manner, and the ends of the two springs 70 close to each other are connected to the lens support 30 and the base 10 respectively. By setting it in this way, the symmetry of the anti-shake structure can be ensured in structure. In terms of performance, the force distribution between the lens support 30, the spring 70 and the base 10 can be made more uniform, so that the performance of the anti-shake structure is more stable and the anti-shake function is guaranteed.

[0087] In order to avoid affecting the movement of the spring 70, optionally, a yield groove 12 is provided on the side of the base 10 facing the spring 70 to provide expansion space for the spring 70; similarly, the lens support body 30 has a stepped yield surface 33 on the side facing the spring 70 to provide deformation space for the spring 70.

[0088] Specifically, the lens support body 30 has a stepped clearance surface 33 on one side facing the spring 70, and one end of the spring 70 is connected to the stepped clearance surface 33 to be spaced apart from the base 10. In this way, the spring 70 is also easily installed.

[0089] By providing the clearance groove 12 and the stepped clearance surface 33 , the squeezing interference of the base 10 and the lens support body 30 on the spring 70 can be effectively reduced, and a certain stretching space / deformation space can be reserved for the spring 70 .

[0090] like Figure 3 As shown, the guide column 31 has a yielding portion 311 on one side facing the spring 70 to avoid interference with the spring 70. By setting it in this way, the influence of the deformation of the spring 70 on the movement of the lens support body 30 can be effectively prevented, and the movement accuracy of the anti-shake structure is further effectively guaranteed.

[0091] Embodiment 2

[0092] The difference from the first embodiment is that the PIN terminal structure 40 is integrally embedded and formed by an INSERT MOLDING process.

[0093] Optionally, at least a portion of the pressing sheet 43 is embedded in the lens support body 30 , and a connecting end of the pressing sheet 43 is located outside the lens support body 30 .

[0094] Optionally, at least a portion of the first PIN terminal 41 is embedded in the base 10 , and a connection end of the first PIN terminal 41 is located outside the base 10 .

[0095] Optionally, at least a portion of the second PIN terminal 42 is embedded in the base 10 , and a connection end of the second PIN terminal 42 is located outside the base 10 .

[0096] exist Figures 6 to 8 In the specific embodiment shown, the pressing sheet 43 is embedded in the lens support body 30 in an integrated manner and the portion connected to the SMA wire 50 is exposed, and the first PIN end pin 41 and the second PIN end pin 42 are partially embedded in the base 10. By such an arrangement, it is possible to ensure that the first PIN end pin 41, the second PIN end pin 42 and the pressing sheet 43 are fixed more firmly. In addition, by such an arrangement, the pressing sheet 43 can be integrated with the lens support body 30, and the first PIN end pin 41, the second PIN end pin 42 can be integrated with the base 10, so that the internal structure of the anti-shake device is more concise.

[0097] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0098] 1. The SMA wire structure of the present invention eliminates many components of the conventional OIS motor (such as magnets and coils, etc.), and the internal structure is simple and easy to assemble;

[0099] 2. The SMA wire structure of the present invention greatly reduces the thickness of the anti-shake motor structure, and the overall structure is thin and light, which is suitable for the development trend of thin and light smartphones;

[0100] 3. The SMA motor of the present invention does not require components such as magnets, so there is no problem of magnetic interference, and the motor placement is not restricted, which is particularly beneficial for the development of dual-camera motors;

[0101] 4. Provides a smaller and lower-cost OIS motor design solution;

[0102] 5. The motor has lower power consumption and can better meet the requirements of mobile devices;

[0103] 6. Compared with conventional OIS motors, SMA metal wire is very tough and has outstanding driving effect;

[0104] 7. It can focus faster and more accurately, with stable reliability and excellent anti-shake performance.

[0105] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0106] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0107] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-shake structure, characterized in that: include: Base (10); A housing (20), the housing (20) being arranged outside the base (10) and forming a receiving cavity therebetween; A lens support body (30), wherein the lens support body (30) is arranged in the accommodating cavity; At least four groups of PIN end pin structures (40), the at least four groups of PIN end pin structures (40) are located in the accommodating cavity, and at least one group of the PIN end pin structures (40) is correspondingly arranged at each side edge of the base (10), each group of the PIN end pin structures (40) comprises a first PIN end pin (41), a second PIN end pin (42), and a pressing sheet (43), and the first PIN end pin (41) and the second PIN end pin (42) are independently arranged on the base (10), and the pressing sheet (43) is arranged on the lens support body (30); A plurality of SMA wires (50), each group of the PIN end pin structures (40) correspondingly connected to two SMA wires (50) arranged crosswise with each other, wherein one SMA wire (50) connects the first PIN end pin (41) to the pressing sheet (43), and another SMA wire (50) connects the second PIN end pin (42) to the pressing sheet (43); The first end (411) of the first PIN terminal pin and the first end (421) of the second PIN terminal pin both extend outward from the accommodating cavity; In the same group of the PIN terminal pin structures (40), the second end (412) of the first PIN terminal pin and the second end (422) of the second PIN terminal pin are both connected to different SMA wires (50) as connection ends, and the second end (412) of the first PIN terminal pin and the second end (422) of the second PIN terminal pin are spaced apart in the axial direction of the lens support body (30) to form a height difference, and the two connecting ends of the pressing sheet (43) have a height difference in the axial direction of the lens support body (30) and are respectively connected to different SMA wires (50); The base (10) has a boss (11) extending toward one side of the top surface of the housing (20), and the lateral surface of the boss (11) has a groove (111) for accommodating the first PIN terminal foot (41) and the second PIN terminal foot (42), and the groove (111) extends to the bottom surface of the base (10) so that the first end (411) of the first PIN terminal foot and the first end (421) of the second PIN terminal foot extend out of the accommodating cavity; The anti-shake structure further comprises at least one spring (70), wherein the spring (70) is located between the base (10) and the lens support body (30), and one end of the spring (70) is connected to the base (10), and the other end of the spring (70) is connected to the lens support body (30); The lens support body (30) has a stepped clearance surface (33) on one side facing the spring (70), and one end of the spring (70) is connected to the stepped clearance surface (33) so as to be spaced apart from the base (10); A guide column (31) is provided at the lateral edge of the lens support body (30), and the guide column (31) has a yielding portion (311) on the side facing the spring (70) to avoid interference with the spring (70).

2. The anti-shake structure according to claim 1, characterized in that: The first PIN terminal pin (41) and the second PIN terminal pin (42) are located at the side corners of the base (10); and / or The pressing sheet (43) is located at a side corner of the lens support body (30).

3. The anti-shake structure according to claim 1, characterized in that: The PIN terminal structures (40) of two adjacent groups are arranged in a mirror image along the diagonal line of the base (10).

4. The anti-shake structure according to claim 1, characterized in that: A line connecting the second end (412) of the first PIN terminal and the second end (422) of the second PIN terminal is parallel to the axial direction of the lens support body (30); and / or The connecting line between the two connecting ends of the pressing sheet (43) is parallel to the axial direction of the lens support body (30).

5. The anti-shake structure according to claim 1, characterized in that: The middle portion of the pressing sheet (43) has an extension section (431) for fixing to the lens support body (30).

6. The anti-shake structure according to claim 1, characterized in that: At least one first heat-riveted column (60) is provided on the lens support body (30) and / or the base (10), and at least one of the pressing sheet (43), the first PIN end pin (41) and the second PIN end pin (42) is connected to the first heat-riveted column (60) by heat riveting.

7. The anti-shake structure according to claim 1, characterized in that: There are two bosses (11), and the two bosses (11) are respectively located at a group of oppositely arranged corners of the base (10), and each of the two lateral surfaces of each boss (11) is provided with a groove (111).

8. The anti-shake structure according to claim 1, characterized in that: The base (10) has a boss (11) extending toward one side of the top surface of the housing (20); a guide groove (112) is provided on the side of the boss (11) facing the lens support (30); the extension direction of the guide groove (112) is parallel to the axial direction of the lens support (30); a guide column (31) is provided at the lateral edge of the lens support (30); the guide column (31) is located in the guide groove (112) and can move along the guide groove (112); and a movement gap is provided between the guide column (31) and the guide groove (112).

9. The anti-shake structure according to claim 8, characterized in that: The top surface of the guide column (31) is higher than the top surface of the lens support body (30).

10. The anti-shake structure according to claim 1, characterized in that: At least one top-contact limiting column (32) is arranged on the top surface of the lens support body (30), and an assembly gap is reserved between the top-contact limiting column (32) and the inner surface of the outer shell (20), so that a movement gap is formed between the upper surface of the lens support body (30) and the inner surface of the outer shell (20).

11. The anti-shake structure according to claim 10, characterized in that: A guide column (31) is provided at the lateral edge of the lens support body (30), the top surface of the guide column (31) is higher than the top surface of the lens support body (30), and the top surface of the guide column (31) is flush with the top surface of the top-contact limiting column (32).

12. The anti-shake structure according to claim 11, characterized in that: There are two top contact limiting columns (32) and they are respectively located at a group of oppositely disposed corners of the lens support body (30); there are two guide columns (31) and they are respectively located at another group of oppositely disposed corners of the lens support body (30).

13. The anti-shake structure according to claim 1, characterized in that: At least a portion of the pressing sheet (43) is embedded in the lens support body (30), and a connecting end of the pressing sheet (43) is located outside the lens support body (30); and / or At least a portion of the first PIN terminal (41) is embedded in the base (10), and a connection end of the first PIN terminal (41) is located outside the base (10); and / or At least a portion of the second PIN terminal (42) is embedded in the base (10), and a connection end of the second PIN terminal (42) is located outside the base (10).

14. The anti-shake structure according to any one of claims 1 to 13, characterized in that: At least one second heat-riveted column (80) is provided on the lens support body (30) and / or the base (10), and at least one end of the spring (70) is connected to the second heat-riveted column (80) by heat riveting.

15. The anti-shake structure according to any one of claims 1 to 13, characterized in that: There are two springs (70), both of which are arc-shaped structures and are arranged between the base (10) and the lens support body (30) in an angularly symmetrical manner, and the ends of the two springs (70) that are close to each other are respectively connected to the lens support body (30) and the base (10).

16. The anti-shake structure according to any one of claims 1 to 13, characterized in that: A clearance groove (12) is provided on one side of the base (10) facing the spring (70) to provide expansion space for the spring (70).

17. An anti-shake system, characterized in that: The invention comprises the anti-shake structure according to any one of claims 1 to 16.

18. A camera device, characterized in that: Includes the anti-shake system as described in claim 17.

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