Lens module and electronic device

Abstract

The application discloses a lens module and electronic equipment, and belongs to the technical field of camera shooting. The lens module comprises a fixing seat, the fixing seat is provided with an accommodating cavity which penetrates from top to bottom, a gap is formed on one side of the fixing seat, and the gap is in communication with the accommodating cavity; a bearing part is arranged in the accommodating cavity, and the bearing part bears a lens; a driven part is arranged on one side of the bearing part, and the driven part protrudes from the gap; a suspension assembly comprises first elastic sheets and second elastic sheets, the first elastic sheets and the second elastic sheets are symmetrically arranged along the gap, and are connected with the fixing seat and the bearing part; the bearing part is suspended in the accommodating cavity through the suspension assembly; and SMA wires are connected with two sides of the gap respectively, the SMA wires are bent in a V shape, and the middle parts of the SMA wires are hooked on the driven part. The lens module disclosed by the application occupies a smaller space, and moves stably.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a lens module and electronic equipment. Background Art

[0002] With the development of camera technology, some high-end smart devices, such as flagship models of smartphones, are gradually being equipped with multiple lenses of different types to improve the imaging capabilities of the smart devices.

[0003] Existing lens modules generally consist of a lens assembly, a mounting base, and a driver module. The lens assembly is mounted in or on the mounting base, and the driver module drives the lens assembly to perform focusing or image stabilization operations. However, the shape, size, and mounting arrangement of the components in existing lens modules result in a large space occupation by the lens module. This directly results in a larger lens module size, hindering device miniaturization. Summary of the Invention

[0004] This application aims to solve one of the technical problems existing in the prior art. To this end, this application proposes a lens module. The lens module of this application occupies a small installation space, which facilitates the miniaturization of the device. This application also proposes an electronic device.

[0005] The lens module according to the embodiment of the first aspect of the present application includes:

[0006] A fixing seat, wherein the fixing seat is provided with an accommodating cavity extending vertically therethrough, and a notch is provided on one side of the fixing seat, the notch being in communication with the accommodating cavity;

[0007] A carrying portion, the carrying portion is installed in the accommodating cavity, and the carrying portion carries a lens; a driven member is provided on one side of the carrying portion, and the driven member protrudes from the notch;

[0008] a suspension assembly, the suspension assembly comprising a first elastic piece and a second elastic piece, the first elastic piece and the second elastic piece being symmetrically arranged along the notch and both connected to the fixing seat and the bearing portion, the bearing portion being suspended in the accommodating cavity through the suspension assembly;

[0009] An SMA wire, wherein two ends of the SMA wire are respectively connected to two sides of the notch, the SMA wire is bent in a V shape and the middle portion is hooked on the driven component.

[0010] The lens module according to the embodiment of the present application has at least the following beneficial effects:

[0011] The support portion is provided with a lens, and the shape of the support portion is consistent with the shape of the accommodating cavity. A notch is provided on one side of the fixing seat, and a driven component is provided on the side of the support portion corresponding to the notch, protruding from the notch of the fixing seat. The two ends of the SMA wire are respectively connected to the two sides of the notch. The SMA wire is V-shaped and the middle portion is hooked on the driven component. When the SMA wire is energized and contracted, it pulls the driven component to move, and the driven component drives the support portion to move in the accommodating cavity, thereby achieving the focusing operation of the lens. When the V-shaped angle on the SMA wire is larger, the distance the V-shaped vertex moves for the same amount of contraction when the SMA wire is energized, that is, the distance the driven component moves is longer. Therefore, the V-shaped angle of the SMA wire can be set to a larger value, thereby reducing the vertical distance between the V-shaped angle vertex on the SMA wire and the connection point between the SMA wire and the fixing seat, thereby reducing the thickness of the lens module and facilitating miniaturization. The suspension assembly connects the fixed seat and the load-bearing part, so that the load-bearing part can be suspended in the accommodating cavity, avoiding contact between the outer wall of the load-bearing part and the inner wall of the accommodating cavity, so as to reduce the friction when the load-bearing part moves, which is beneficial to improving the driving efficiency of the SMA wire, thereby reducing the setting of the SMA wire, which is beneficial to saving installation space and reducing the volume; at the same time, the suspension assembly is provided with a first spring clip and a second spring clip, and the first spring clip and the second spring clip are symmetrically arranged along the notch, so that the load-bearing part is subjected to the force of the suspension assembly more evenly, which is beneficial to improving the stability of the movement of the load-bearing part.

[0012] According to some embodiments of the present application, the first spring piece and the second spring piece are U-shaped, and the first spring piece and the second spring piece each include a first cantilever and a second cantilever; the first cantilever and the second cantilever are connected, and the connection between the first cantilever and the second cantilever is close to the driven part, the first cantilever is connected to the fixed seat, and the second cantilever is connected to the bearing part.

[0013] According to some embodiments of the present application, a spacing groove is formed between the first cantilever and the second cantilever, and a width of the spacing groove is smaller than a width of a connection between the first cantilever and the second cantilever.

[0014] According to some embodiments of the present application, the suspension assembly further includes a connecting portion, which connects the first cantilever of the first elastic piece and the first cantilever of the second elastic piece; a suspension portion is provided in the middle of the connecting portion, which connects the driven part.

[0015] According to some embodiments of the present application, a limiting portion is provided at one end of the first cantilever away from the driven member, a limiting groove is correspondingly provided on the fixing seat, and the limiting portion is embedded in the limiting groove.

[0016] According to some embodiments of the present application, two groups of suspension components are provided, wherein one group of suspension components connects the bottom of the fixing seat and the bottom of the bearing portion, and the other group of suspension components connects the top of the fixing seat and the top of the bearing portion.

[0017] According to some embodiments of the present application, two groups of SMA wires are provided, the V-shaped openings of the two groups of SMA wires are in opposite directions, and the driven member is clamped between the V-shaped angles formed by the bending of the two groups of SMA wires.

[0018] According to some embodiments of the present application, a surface of the driven component that contacts the SMA wire is an arc surface.

[0019] According to some embodiments of the present application, an outer cover is further included, wherein the outer cover covers the fixing seat, the bearing part, the SMA wire and the suspension assembly, and the inner surface of the outer cover is insulated.

[0020] An electronic device according to an embodiment of the second aspect of the present application includes the above-mentioned lens module.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 This is a front view of a lens module in one embodiment of the present application.

[0024] Figure 2 This is an exploded view of a lens module in one embodiment of the present application.

[0025] Figure 3 This is a top view of a lens module in one embodiment of the present application.

[0026] Figure 4 This is a top view of a lens module in another embodiment of the present application.

[0027] Figure 5 This is a three-dimensional diagram of the lens module after removing the outer cover suspension in one embodiment of the present application.

[0028] Figure 6 This is a three-dimensional diagram of the fixed seat suspension in one embodiment of the present application.

[0029] Figure 7 This is a three-dimensional diagram of the installation relationship between the SMA wire suspension, the touch panel suspension, and the driven component suspension in one embodiment of the present application.

[0030] Figure 8 This is a three-dimensional diagram of the installation relationship between the SMA wire suspension, the touch panel suspension, and the driven component suspension in another embodiment of the present application.

[0031] Figure 9 This is a top view of the first elastic piece or the second elastic piece in an embodiment of the present application.

[0032] Figure 10 This is a schematic diagram showing the stress points of the suspension assembly and the load-bearing part in one embodiment of the present application.

[0033] Figure Number:

[0034] Fixed seat 100;

[0035] Accommodating cavity 111; notch 112; limiting groove 113; contact plate 120; terminal 121;

[0036] a carrying portion 200;

[0037] Driven member 210; protrusion 211; first mounting groove 212; second mounting groove 213;

[0038] Positioning column 214; connecting piece 215;

[0039] Suspension assembly 300;

[0040] First spring piece 300a; second spring piece 300b;

[0041] First cantilever 310; second cantilever 320;

[0042] Connecting portion 340; hanging portion 350; limiting portion 360;

[0043] SMA line 400;

[0044] A first SMA wire 410; a second SMA wire 420;

[0045] Outer cover 500. DETAILED DESCRIPTION

[0046] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0047] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, left, right, front, and back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0048] In the description of this application, if there is a description of first or 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 number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0050] The following is based on Figures 1 to 10 The lens module of the first embodiment of the present application is described.

[0051] refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , the lens module of this application includes:

[0052] The fixing base 100 has a vertically extending accommodating cavity 111 formed therein, and a notch 112 formed on one side of the fixing base 100, the notch 112 being in communication with the accommodating cavity 111;

[0053] The carrying portion 200 is installed in the accommodating cavity 111 and carries a lens. A driven member 210 is provided on one side of the carrying portion 200 and protrudes from the notch 112.

[0054] The suspension assembly 300 includes a first elastic piece 300 a and a second elastic piece 300 b . The first elastic piece 300 a and the second elastic piece 300 b are symmetrically arranged along the notch 112 and are both connected to the fixing seat 100 and the supporting portion 200 . The supporting portion 200 is suspended in the accommodating cavity 111 via the suspension assembly 300 .

[0055] The SMA wire 400 has two ends connected to two sides of the notch 112 . The SMA wire 400 is bent in a V-shape and its middle portion is hooked on the driven component 210 .

[0056] Specifically, the accommodating cavity 111 is circular, and the side wall profile of the supporting portion 200 is consistent with the inner side wall profile of the accommodating cavity 111. The supporting portion 200 is installed in the accommodating cavity 111 and a certain gap is left between the supporting portion 200 and the side wall of the accommodating cavity 111. In order to install the lens, an annular cavity is opened in the supporting portion 200, and the lens is installed in the annular cavity of the supporting portion 200. The annular cavity can also be replaced with a cavity of other shapes, which can be specifically set according to the shape of the lens. The fixing seat 100 frames the supporting portion 200 in the accommodating cavity 111, and the supporting portion 200 frames the lens in the annular cavity. Such a setting can reduce the thickness of the lens module, which is beneficial to reducing the volume of the lens module.

[0057] Specifically, the SMA wire 400 is disposed on a side of the fixing base 100 where the notch 112 is formed. The two ends of the SMA wire 400 are connected to the two sides of the notch 112, respectively. The SMA wire 400 is curved in a V-shape, and its middle portion is hooked onto the driven component 210. When the SMA wire 400 is energized and contracted, it pulls the driven component 210 to move, and the driven component 210 drives the carrier 200 to move within the accommodating cavity 111, thereby achieving lens focusing. The position of the V-shaped apex on the SMA wire 400 changes with the degree of contraction of the SMA wire 400. When the V-shaped angle on the SMA wire 400 is larger, the V-shaped apex moves a longer distance for the same amount of contraction when the SMA wire 400 is energized, that is, the driven component 210 moves a longer distance. Therefore, setting the V-angle of the SMA wire 400 to a larger value can reduce the vertical distance between the apex of the V-angle on the SMA wire 400 and the connection point between the SMA wire 400 and the fixing seat 100, thereby reducing the thickness of the lens module and achieving the effect of miniaturization of the lens module.

[0058] It is understood that the SMA wire 400 can be connected to the mounting base 100 in the following manner: a contact pad 120 is provided on the same top or bottom surface of the mounting base 100 along the side of the notch 112. The contact pad 120 is snap-fitted, bonded, welded, or otherwise fixedly connected to the top or bottom surface of the mounting base 100. Two contact pads 120 are provided and symmetrically arranged about the notch 112. The ends of the SMA wire 400 are electrically connected to the contact pads 120 on either side of the notch 112, respectively. This arrangement facilitates efficient use of space and facilitates quick assembly of the SMA wire 400. It is understood that the contact pad 120 is provided with a terminal 121 inclined at a certain angle, and both ends of the SMA wire 400 are connected to the terminal 121. The inclination angle of the terminal 121 is oriented in the length direction of the SMA wire 400 connected thereto. Since the end of the SMA wire 400 connected to the contact pad 120 is generally welded, when the SMA wire 400 is bent into a V-shape, a crease will form at the connection between the SMA wire 400 and the contact pad 120. Over time, or after a certain number of power-on and contraction cycles, the SMA wire 400 will crack at the crease, thereby affecting the service life of the SMA wire 400. Therefore, the contact pad 120 is provided with a terminal 121 inclined at a certain angle, and the inclination angle is oriented in the length direction of the SMA wire 400 connected thereto. The SMA wire 400 is welded or bonded to the terminal 121 on the contact pad 120. Initially, the angle between the section of the SMA wire 400 fixedly connected to the terminal 121 and the adjacent side of the V-shaped angle is zero. When the SMA wire 400 is energized and contracts, the angle between the section of the SMA wire 400 fixedly connected to the terminal 121 and the adjacent side of the V-shaped angle changes only slightly. This arrangement reduces the bending angle of the SMA wire 400 at the connection with the contact pad 120, reduces wear on the SMA wire 400, and increases the service life of the SMA wire 400.

[0059] Specifically, the suspension assembly 300 connects the top of the mounting base 100 and the top of the carrier 200, or the bottom of the mounting base 100 and the bottom of the carrier 200, thereby allowing the carrier 200 to be suspended within the accommodating cavity 111. This prevents the outer wall of the carrier 200 from contacting the inner wall of the accommodating cavity 111, thereby reducing friction during the movement of the carrier 200 and facilitating improved driving efficiency of the drive assembly. This reduces the number of SMA wires 400 required, saving installation space and reducing the size of the device. Specifically, the suspension assembly 300 includes a first spring clip 300a and a second spring clip 300b. The first spring clip 300a and the second spring clip 300b are symmetrically arranged along the notch 112, ensuring a more uniform force applied to the carrier 200 by the suspension assembly 300 and improving the stability of the carrier 200's movement. Furthermore, when the SMA wire 400 is de-energized and slack, the carrier 200 can be reset by the elastic force of the first spring clip 300a and the second spring clip 300b, preparing for the next focusing operation.

[0060] refer to Figures 2 to 4 In some embodiments of the present application, the first spring clip 300a and the second spring clip 300b are U-shaped, and the first spring clip 300a and the second spring clip 300b both include a first cantilever 310 and a second cantilever 320; the first cantilever 310 and the second cantilever 320 are connected, and the connection between the first cantilever 310 and the second cantilever 320 is close to the driven part 210, the first cantilever 310 is connected to the fixing seat 100, and the second cantilever 320 is connected to the bearing part 200.

[0061] It is understood that a positioning pin is provided on the fixing base 100, and a socket is provided on the end of the first cantilever 310 away from the driven member 210. During assembly, the socket on the first cantilever 310 is engaged with the positioning pin on the fixing base 100, and then the first cantilever 310 and the fixing base 100 are bonded together to complete the positioning of the first cantilever 310. The second cantilever 320 connects the load-bearing portion 200 and the first cantilever 310. The connection method between the second cantilever 320 and the load-bearing portion 200 is consistent with the connection method between the first cantilever 310 and the fixing base 100 described above, and will not be repeated here.

[0062] It should be understood that, in the following description, on the plane of the suspension component 300 refers to the plane where the suspension component is located in the initial state.

[0063] The first spring clip 300a and the second spring clip 300b are both U-shaped. To save space, the first cantilever 310 and the second cantilever 320 are both arc-shaped, and the second cantilever 320 is arranged on the inner side of the arc of the first cantilever 310. Specifically, the connection between the first cantilever 310 and the second cantilever 320 is close to the driven part 210. In this way, the geometric center of the suspension component 300 is located at the midpoint of the line connecting the centers of the connection between the first spring clip 300a and the second spring clip 300b on the left and right sides of the suspension component 300, so that the projection of the force exerted by the suspension component 300 on the load-bearing part 200 on the plane of the suspension component 300 is located at the geometric center of the suspension component 300. It should be understood that the projection of the contact point between the SMA wire 400 and the driven member 210 on the plane of the suspension assembly 300 is located on the line connecting the centers of the connection points between the first spring piece 300a and the second spring piece 300b on the left and right sides of the suspension assembly 300. When the SMA wire 400 is energized and contracts to pull the driven member 210 to move, the driven member 210 is subjected to a vertical upward or vertical downward driving force, such as Figure 10 As shown, the projection of the force point of the driven part 210 on the plane of the suspension component 300 is close to or coincides with the geometric center of the suspension component 300, and both are located at point A. That is, the force exerted on the load-bearing part 200 by the SMA wire 400 and the force exerted on the load-bearing part 200 by the suspension component 300 are equal in magnitude and opposite in direction, thereby balancing the force exerted on the load-bearing part 200 and reducing the risk of deflection of the load-bearing part 200.

[0064] refer to Figure 9 In some embodiments of the present application, a spacing groove is formed between the first cantilever 310 and the second cantilever 320 , and the width of the spacing groove is smaller than the width of the connection between the first cantilever 310 and the second cantilever 320 .

[0065] Since the carrying portion 200 is only driven by the SMA wire 400 on one side thereof, and the suspension assembly 300 also only suspends and supports one side of the carrying portion 200 , the carrying portion 200 may still deflect in the accommodating cavity 111 .

[0066] To solve the above problem, it should be understood that the suspension assembly 300 may also have the following configurations:

[0067] Specifically, the width b of the spacing groove is smaller than the width a of the connection between the first cantilever 310 and the second cantilever 320. Specifically, the value of a can be three times or more the value of b. Through this arrangement, the stiffness of the suspension assembly 300 in the direction of movement of the support portion 200 is much smaller than the stiffness in other directions, thereby allowing the suspension assembly 300 to undergo significant deformation only in the direction of movement of the support portion 200. When the support portion 200 moves up and down, the first cantilever 310 and the second cantilever 320 undergo bending deformation in the direction of movement of the support portion 200, and only slight torsional deformation occurs at the connection between the first cantilever 310 and the second cantilever 320, thereby preventing the support portion 200 from undergoing significant deflection, which would affect the focusing effect.

[0068] Through such an arrangement, the suspension component 300 has better elasticity in the movement direction of the bearing part 200, making the bearing part 200 move more smoothly. It is only necessary to set the suspension component 300 on one side of the bearing part 200 to enable the bearing part 200 to move stably in the accommodating cavity 111, which is beneficial to reducing the space occupied by the suspension component 300, and further beneficial to the miniaturization of the lens module.

[0069] refer to Figure 4 In some embodiments of the present application, the suspension assembly 300 further includes a connecting portion 340, which connects the first cantilever 310 of the first elastic piece 300a and the first cantilever 310 of the second elastic piece 300b; a suspension portion 350 is provided in the middle of the connecting portion 340, and the suspension portion 350 is connected to the driven part 210.

[0070] It is understood that the provision of a connecting portion 340, which connects the first cantilever 310 of the first spring clip 300a and the first cantilever 310 of the second spring clip 300b, can strengthen the connection between the first spring clip 300a and the second spring clip 300b, thereby improving the overall stability of the suspension assembly 300. A hanging portion 350 is provided in the middle of the connecting portion 340, which connects to the driven member 210. Specifically, the hanging portion 350 and the driven member 210 can be connected by a snap connection, adhesive connection, or other connection method to facilitate assembly. After the provision of the connecting portion 340, the addition of the hanging portion 350 allows the projection of the force bearing point of the driven member 210 on the plane of the suspension assembly 300 to be close to or coincide with the geometric center of the suspension assembly 300. This not only strengthens the stability of the suspension assembly 300 itself, but also ensures that the suspension assembly 300 maintains force balance during lens focusing operations, preventing uneven force on the suspension assembly 300 from causing the support portion 200 to deflect, thereby affecting the lens focusing effect.

[0071] It is understandable that the suspension assembly 300 is formed by integral stamping and cutting, and is easy and quick to manufacture.

[0072] It is understood that the suspension assembly may also be configured as follows: the suspension assembly further includes a contact portion, which is annular and fixedly connected to the upper or lower surface of the support portion, and connects the second cantilever of the first spring leaf and the second cantilever of the second spring leaf. This configuration further strengthens the connection between the first spring leaf and the second spring leaf, thereby improving the overall stability of the suspension assembly.

[0073] refer to Figure 3 and Figure 4 In some embodiments of the present application, a limiting portion 360 is provided at one end of the first cantilever 310 away from the driven member 210 , a limiting groove 113 is opened on the fixing seat 100 , and the limiting portion 360 is embedded in the limiting groove 113 .

[0074] It is understood that by providing a limiting portion 360 at the end of the first cantilever 310 away from the driven member 210, and by providing a limiting slot 113 on the fixing base 100, with the limiting slot 113 being slightly larger than the limiting portion 360, and the limiting portion 360 being embedded in the limiting slot 113, the suspension assembly 300 can be prevented from shaking significantly in a direction perpendicular to the direction of movement of the supporting portion 200, thereby affecting the movement of the supporting portion 200. This arrangement helps to improve the stability of the supporting portion 200 when suspended in the accommodating cavity 111, thereby enhancing the focusing effect of the lens.

[0075] refer to Figure 1 and Figure 2In some embodiments of the present application, two groups of suspension components 300 are provided, wherein one group of suspension components 300 connects the bottom of the fixing seat 100 and the bottom of the bearing portion 200, and the other group of suspension components 300 connects the top of the fixing seat 100 and the top of the bearing portion 200.

[0076] It can be understood that by setting up two groups of suspension components 300, when the bearing part 200 moves up and down in the accommodating cavity 111, the two groups of suspension parts 350 undergo elastic deformation at the same time, so that the bearing part 200 is subjected to the suspension force more evenly, which is beneficial to improving the stability of the movement of the bearing part 200.

[0077] refer to Figure 1 、 Figure 2 and Figure 5 In some embodiments of the present application, two groups of SMA wires 400 are provided, and the V-shaped openings of the two groups of SMA wires 400 are in opposite directions, and the driven member 210 is clamped between the V-shaped angles formed by the bending of the two groups of SMA wires 400.

[0078] Specifically, the SMA wire 400 includes a first SMA wire 410 and a second SMA wire 420. In the initial state, the first SMA wire 410 and the second SMA wire 420 are symmetrical about the driven part 210, and the middle part of the first SMA wire 410 abuts against the bottom of the driven part 210, and the second SMA wire 420 abuts against the top of the driven part 210. When the supported portion 200 needs to move upward to achieve focusing, the first SMA wire 410 is energized to cause it to contract and pull the driven member 210 upward, while a variable, small current is passed through the second SMA wire 420 to keep it slightly taut, thereby maintaining the contact position between the second SMA wire 420 and the driven member 210. When focusing is complete and the supported portion 200 needs to move downward to achieve reset, the second SMA wire 420 is energized to cause it to contract and pull the driven member 210 downward, while a small current is passed through the first SMA wire 410 to keep it slightly taut, thereby maintaining the contact position between the first SMA wire 410 and the driven member 210. By providing two sets of SMA wires 400, the supporting portion 200 can achieve orderly focusing and reset operations, making the movement of the supporting portion 200 more controllable.

[0079] refer to Figure 7 In some embodiments of the present application, the surface of the driven component 210 that contacts the SMA wire 400 is an arc surface.

[0080] It is understood that the driven member 210 can be a cylinder. This configuration can reduce friction when the SMA wire 400 contacts the driven member 210, thereby increasing the service life of the SMA wire 400. Furthermore, the side of the driven member 210 that contacts the SMA wire 400 is an arc surface. Since the driven member 210 is clamped between the V-shaped angle formed by the bending of the first SMA wire 410 and the second SMA wire 420, when the two sets of SMA wires 400 are energized and contracted, the driven member 210 can slide freely between the V-shaped angles formed by the two sets of SMA wires 400, achieving smooth centering correction and keeping the driven member 210 in a balanced state when the SMA wires 400 are energized, making focusing more accurate.

[0081] It is understandable that in order to make the position of the SMA wire 400 on the driven component 210 more stable, a groove is provided on the arc-shaped contact surface of the driven component 210 . Specifically, the width and depth of the groove are both greater than the diameter of the SMA wire 400, so that the SMA wire 400 can move freely in the groove, preventing the gap between the side wall of the groove and the SMA wire 400 from being too small to affect the expansion and contraction of the SMA wire 400, and also facilitating the heat dissipation of the SMA wire 400 in the groove; at the same time, the length of the groove is greater than the contact length between the SMA wire 400 and the driven part 210. When the first SMA wire 410 and the second SMA wire 420 are energized and contracted to jointly drive the driven part 210 to move, when the driven part 210 slides between the V-shaped angle formed by the first SMA wire 410 and the second SMA wire 420 to complete the centering correction, since the length of the groove is greater than the contact length between the SMA wire 400 and the driven part 210, during the sliding process of the driven part 210, the first SMA wire 410 and the second SMA wire 420 can be always located in the groove, thereby preventing the first SMA wire 410 and the second SMA wire 420 from deviating from the predetermined position and affecting the movement accuracy. It is understandable that two grooves can be provided, one for passing the first SMA wire 410 and the other for passing the second SMA wire 420. The grooves corresponding to the first SMA wire 410 and the second SMA wire 420 are set separately to prevent the first SMA wire 410 and the second SMA wire 420 from contacting each other under certain working conditions, resulting in a short circuit between the SMA wires 400 or affecting heat dissipation.

[0082] It is understandable that, in addition to the above-mentioned configuration, the driven component 210 may also have the following configuration.

[0083] refer to Figure 2 and Figure 8, it can be understood that, a first mounting groove 212 is provided on the side of the bearing portion 200 opposite to the notch 112, and a protrusion 211 is provided on the side of the driven member 210 opposite to the bearing seat. When assembling, the protrusion 211 of the driven member 210 is inserted into the first mounting groove 212 of the bearing portion 200, and the assembly of the driven member 210 can be completed; further, a connecting piece 215 is connected between the driven member 210 and the bearing portion 200, respectively connecting the top of the driven member 210 and the top of the bearing portion 200. Specifically, at the top of the driven member 210 and the bearing portion 200, Positioning posts 214 are provided at the top, and a second mounting groove 213 is also provided at the top of the load-bearing portion 200. One end of a connecting piece 215 is embedded in the second mounting groove 213 and engages with the positioning post 214 at the top of the load-bearing portion 200. The other end of the connecting piece 215 engages with the positioning post 214 at the top of the driven member 210. The connecting piece 215 abuts both the top of the load-bearing portion 200 and the top of the driven member 210. It is understood that an adhesive can also be applied to the side of the connecting piece 215 that abuts the load-bearing portion 200 and the driven member 210 to improve the connection effect of the connecting piece 215. This arrangement facilitates the assembly and disassembly of the driven member 210 and the load-bearing portion 200, and different driven members 210 can be replaced according to the number of SMA wires 400, saving production costs.

[0084] It can be understood that two connecting pieces 215 are provided, which not only connect the top of the driven part 210 and the top of the bearing part 200, but also connect the bottom of the driven part 210 and the bottom of the bearing part 200. The connection method between the connecting piece 215 and the bottom of the driven part 210 and the bottom of the bearing part 200 is consistent with the above method and will not be repeated here.

[0085] refer to Figure 2 In some embodiments of the present application, an outer cover 500 is further included, and the outer cover 500 covers the fixing seat 100, the bearing part 200, the SMA wire 400 and the suspension component 300, and the inner surface of the outer cover 500 is insulated.

[0086] It is understood that the outer cover 500 protects the internal components of the lens module. Generally, due to the small size of the lens module and the relatively thin thickness of the outer cover 500, the outer cover 500 is preferably made of a relatively rigid metal material. Since the spacing between the various components of the lens module is small, and some components are exposed and electrically connected, insulating the inner surface of the outer cover 500 can prevent contact between the various components of the lens module and the outer cover 500, which could cause short circuits between the components. This insulation treatment can be achieved by coating with an insulating material or applying an insulating film.

[0087] An electronic device according to an embodiment of the second aspect of the present application includes the above-mentioned lens module.

[0088] It can be understood that by adopting the above-mentioned lens module, the volume of the electronic device is reduced, and the thickness of the electronic device is also reduced, which is conducive to the lightweight and thinning of the electronic device; or, more lens modules can be installed without increasing the volume of the electronic device to improve the imaging capability of the electronic device.

[0089] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A lens module, characterized in that: include: A fixing seat, wherein the fixing seat is provided with an accommodating cavity extending vertically therethrough, and a notch is provided on one side of the fixing seat, the notch being in communication with the accommodating cavity; a carrying portion, the carrying portion being installed in the accommodating cavity and carrying a lens; a driven member being provided on one side of the carrying portion, the driven member protruding from the notch; a first mounting groove being provided on a side of the carrying portion opposite to the notch, a protrusion being provided on a side of the driven member opposite to the carrying portion, the protrusion being inserted into the first mounting groove; A connecting piece is further connected between the driven member and the bearing portion, and the connecting piece connects the top of the driven member and the top of the bearing portion respectively; The suspension assembly includes a first spring piece and a second spring piece, the first spring piece and the second spring piece are symmetrically arranged along the notch and are both connected to the fixing seat and the bearing portion, and the bearing portion is suspended in the accommodating cavity through the suspension assembly; the first spring piece and the second spring piece each include a first cantilever and a second cantilever, the first cantilever and the second cantilever are connected, the connection between the first cantilever and the second cantilever is close to the driven member, the first cantilever is connected to the fixing seat, and the second cantilever is connected to the bearing portion; the suspension assembly also includes a connecting portion, which connects the first cantilever of the first spring piece and the first cantilever of the second spring piece; a hanging portion is provided in the middle of the connecting portion, and the hanging portion is connected to the driven member; An SMA wire, wherein two ends of the SMA wire are respectively connected to two sides of the notch, the SMA wire is bent in a V shape and the middle portion is hooked on the driven component.

2. The lens module according to claim 1, wherein: The first elastic piece and the second elastic piece are U-shaped.

3. The lens module according to claim 2, wherein: A spacing groove is formed between the first cantilever and the second cantilever, and a width of the spacing groove is smaller than a width of a connection between the first cantilever and the second cantilever.

4. The lens module according to claim 2, wherein: A limiting portion is provided at one end of the first cantilever away from the driven member, a limiting groove is correspondingly provided on the fixing seat, and the limiting portion is embedded in the limiting groove.

5. The lens module according to any one of claims 1 to 4, characterized in that: The suspension components are provided in two groups, wherein one group of the suspension components is connected to the bottom of the fixing seat and the bottom of the bearing portion, and the other group of the suspension components is connected to the top of the fixing seat and the top of the bearing portion.

6. The lens module according to claim 1, wherein: Two groups of SMA wires are provided, and the V-shaped opening directions of the two groups of SMA wires are opposite. The driven member is clamped between the V-shaped angles formed by the bending of the two groups of SMA wires.

7. The lens module according to claim 1, wherein: The surface of the driven member that contacts the SMA wire is an arc surface.

8. The lens module according to claim 1, wherein: It also includes an outer cover, which covers the fixing seat, the bearing part, the SMA wire and the suspension component, and the inner surface of the outer cover is insulated.

9. An electronic device, characterized in that: A lens module comprising any one of claims 1 to 8.

Images