Guide mechanism, periscopic lens driving device and camera module

Abstract

The utility model relates to a guide mechanism, a periscopic lens driving device and a camera module, comprising a linear guide shaft which is fixed on at least one side of a base and is in sliding fit with a carrier, and the carrier is provided with a sliding fit groove which is in sliding fit with the linear guide shaft. The base is provided with a reference positioning groove used for bearing at least part of the axial section of the linear guide shaft, and the base is provided with a maintaining structure enabling at least part of the axial section of the linear guide shaft to be in static contact with the reference positioning groove all the time. The guide shaft has the advantages that the two V-shaped grooves in the base achieve the positioning function through an accurate geometric structure, then the two ends of the guide shaft are effectively restrained through a two-end fixing mechanism arranged on the base, and in this way, it is ensured that the guide shaft is at least kept in a stable linear state in a carrier movement area in the running process, and the service life of the guide shaft is prolonged. Therefore, the stability and the consistency of carrier movement are obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of 3C product accessories technology, and particularly relates to a guide mechanism for a lens driving carrier and base, a periscope lens driving device, and a camera module. Background Technology

[0002] A periscope lens actuator is an optical system commonly used in cameras, telescopes, and other optical devices to achieve precise control over the position of a lens. This device allows the lens to move up and down, left and right within a limited space, thereby adjusting the focusing of light and forming an image.

[0003] A lens system consists of multiple lenses used to collect and focus light. The drive mechanism typically includes motors, gears, or linear actuators to move the lenses. Common drive methods include stepper motors and servo motors. Position sensors detect the current position of the lens, ensuring the accuracy and repeatability of its movement. The control system uses control algorithms to adjust the drive mechanism, enabling the lens to move precisely as needed. To ensure the stability of the lens during movement, a well-designed mechanical structure is usually required to reduce vibration and errors.

[0004] In the existing technology, the design of the guide rail cannot effectively maintain the stable linear motion of the carrier, resulting in uncertain offset and vibration of the carrier during operation. Because the existing guide shaft adopts a double-end fixed method, due to machining errors and other reasons, the movement of the carrier that slides with the guide shaft has linear errors, affecting focusing and zoom performance. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems by providing a guiding mechanism for a lens drive carrier and base, a periscope lens drive device, and a camera module that can solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A guide mechanism for a lens drive carrier and a base includes a linear guide shaft fixed to at least one side of the base and slidably engaged with the carrier. The carrier is provided with a sliding engagement groove that slidably engages with the linear guide shaft. The base is provided with a reference positioning groove for supporting at least a portion of the axial direction of the linear guide shaft. The base is provided with a retaining structure that ensures that at least a portion of the axial direction of the linear guide shaft is always in static contact with the reference positioning groove.

[0008] Furthermore, the two ends of the linear guide shaft extend beyond the reference positioning groove and are suspended in the air.

[0009] Furthermore, at least a portion of the retaining structure is sleeved and connected to one end segment of the linear guide shaft in the axial direction, and the remaining portion of the retaining structure is pressed against the other end segment of the linear guide shaft in the axial direction of the groove opening of the reference positioning groove towards its bottom.

[0010] Furthermore, the retaining structure includes a retaining sleeve disposed on the base, one axial end segment of the linear guide shaft being inserted into the retaining sleeve, and the retaining structure further includes a retainer pressing against the other axial end segment of the linear guide shaft.

[0011] Furthermore, at least a portion of the retainer is grooved and the retainer and the other end segment of the linear guide shaft are in tangential contact axially.

[0012] Furthermore, the retainer has an insert portion embedded in the base, the insert portion and the base being fixed by adhesive bonding or the base being injection molded and the insert portion being embedded.

[0013] Furthermore, there is at least one sliding groove, both the sliding groove and the reference positioning groove are V-shaped grooves, the linear guide shaft and the sliding groove are in tangential active contact, and the linear guide shaft and the reference positioning groove are in tangential contact.

[0014] Furthermore, the guiding mechanism also includes a rolling member located beside the linear guide shaft, at least a portion of which is in rolling contact with the base, and the remaining portion of which is in rolling contact with the carrier.

[0015] As an application solution, this application also provides a periscope lens driving device, which includes a lens driving carrier and a guide mechanism for the base, and also includes a carrier moving body loaded on the carrier. The carrier drives the carrier moving body together along the optical axis under the drive of a first driving mechanism, and the carrier moving body moves relative to the carrier along the optical axis under the drive of a second driving mechanism. The first driving mechanism and the linear guide shaft are spaced apart in a plane perpendicular to the optical axis.

[0016] As an application solution, this application also provides a camera module, which includes the periscope lens driving device.

[0017] Compared with existing technologies, the advantages of this application are as follows: the two V-grooves on the base achieve positioning through precise geometric construction, and then the guide shaft is effectively constrained at both ends by the two-end fixing mechanism set on the base. This method ensures that the guide shaft maintains a stable straight state at least within the carrier's movement area during operation, thereby significantly improving the smoothness and consistency of carrier movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal main structure assembly of the periscope lens driving device of this utility model.

[0019] Figure 2 for Figure 1 Top view schematic diagram of the main structure of the periscope lens drive device;

[0020] Figure 3 for Figure 2 Schematic diagram of the assembly relationship of the AA section structure;

[0021] Figure 4 This is a front-left exploded view of the main structure of the periscope lens driving device of this utility model.

[0022] Figure 5 This is a front-right exploded view of the main structure of the periscope lens driving device of this utility model.

[0023] Figure 6 This is a schematic diagram of the exploded left side of the main structure of the periscope lens driving device of this utility model;

[0024] Figure 7 This is assembly drawing A of the main related components of the base of this utility model;

[0025] Figure 8 This is assembly drawing B of the main related components of the base of this utility model;

[0026] Figure 9 This is assembly drawing C of the main related components of the base of this utility model;

[0027] Figure 10 This is a bottom view of the main carrier component of this utility model;

[0028] Figure 11 for Figure 7 Detailed diagram of the main components in area B;

[0029] Figure 12 for Figure 8 Detailed diagram of the main components in area C;

[0030] Figure 13 for Figure 9 Detailed diagram of the main components in area D;

[0031] Figure 14 This is a schematic diagram illustrating an example of an electronic device equipped with a camera module in Embodiment 3;

[0032] Figure 15 This is a schematic diagram illustrating the distribution of the driving magnets of this utility model.

[0033] In the figure, there are: base 1, deepened clearance groove 10, reference positioning groove 11, retaining structure 12, retaining sleeve 120, retainer 121, embedding part 1210, limiting boss 13, embedding groove 14, carrier 2, sliding fit groove 21, linear guide shaft 3, rolling component 4, bearing moving body 5, ball 50, first drive mechanism 6, first drive magnet 61, first drive coil 62, second drive mechanism 7, second drive magnet 71, second drive coil 72, and optical axis Z. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning. Example 1

[0038] In this embodiment, the guiding mechanism for the lens drive carrier and the base will be described, such as... Figures 7-9 As shown, the guiding mechanism includes a linear guide shaft 3 fixed to the base 1 and slidingly engaged with the carrier 2, specifically, as... Figure 10 As shown, the carrier 2 is provided with a sliding groove 21 that slides with the linear guide shaft 3. The sliding groove 21 of the carrier 2 and the linear guide shaft 3 can ensure the stability of the carrier 2 during the movement process and reduce the offset and vibration. There is at least one sliding groove 21. In this embodiment, two sliding grooves 21 are preferred, and the two sliding grooves 21 are respectively provided on one side of the carrier 2 near the base 1 (distributed along the optical axis).

[0039] The base 1 has a reference positioning groove 11 for supporting at least a portion of the axial direction of the linear guide shaft 3. A guide mechanism is provided between the carrier 2 and the base 1, enabling faster assembly and adjustment of the device and the linear sliding of the carrier 2, greatly saving time and cost. Both the sliding fit groove 21 and the reference positioning groove 11 are V-shaped grooves. The linear guide shaft 3 and the sliding fit groove 21 are in tangential active contact, and the linear guide shaft 3 and the reference positioning groove 11 are in tangential contact. In other embodiments, the sliding fit groove 21 and the reference positioning groove 11 are each a continuous groove along the optical axis Z direction.

[0040] Among them, such as Figure 5 As shown, the guiding mechanism also includes a rolling member 4 on the other side of the carrier 2 along the direction perpendicular to the optical axis. The rolling member 4 is, for example, a ball. At least a portion of the rolling member 4 is in rolling contact with the base 1, and the remaining portion of the rolling member 4 is in rolling contact with the carrier 2. The rolling member 4 and the linear guide shaft 3 are respectively arranged on both sides of the carrier 2. Their function is not only to maintain the balanced movement of the carrier 2, but also to assist the movement of the carrier 2, so that the carrier 2 will not deviate during the movement. Specifically, the rolling member 4 is at least one rolling ball. The rolling member 4 and the two sliding grooves 21 form a triangular distribution. Through the triangular distribution configuration, the overall stability of the base 1 and the carrier 2 can be improved. Compared with the linear quadrilateral arrangement, the triangular distribution has higher strength, can effectively resist external interference and reduce friction, and maintain precise positioning and sliding fit relationship.

[0041] At least a portion of the rolling member 4 is in rolling contact with the first V-groove on the base 1, and the remaining portion of the rolling member 4 is in rolling contact with the second V-groove on the carrier 2.

[0042] like Figure 8 and Figure 12 As shown, a deepened clearance groove 10 is also provided on the base 1, and the deepened clearance groove 10 is also V-shaped. Figure 9 and Figure 13As shown, the deepened clearance groove 10 is located between two reference positioning grooves 11, and at least a portion of the linear guide shaft 3 located between the retaining sleeve 120 and the reference positioning groove 11 is suspended in the deepened clearance groove 10. The deepened clearance groove 10 is a stepped deepening groove, and the depth gradually increases from the two reference positioning grooves 11 in the opposite direction.

[0043] like Figure 10 As shown, similarly, on the carrier 2, at least two sliding fit grooves 21 are provided with a deepened clearance groove 10.

[0044] The design of the deepened clearance groove 10 can make the installation reference of the linear guide shaft 3 more accurate. At the same time, the deepened clearance groove 10 can also make clearance with the carrier 2, thereby reducing the contact surface between the carrier 2 and the linear guide shaft 3 and improving the smoothness and stability of the movement of the carrier 2.

[0045] The axial spacing between the two sliding grooves 21 on the linear guide shaft 3 is less than the axial spacing between the two reference positioning grooves 11 on the linear guide shaft 3. This arrangement results in an isosceles trapezoidal contact surface between the linear guide shaft 3, the sliding grooves 21, and the reference positioning grooves 11. This design allows for a more uniform distribution of pressure on the contact surface. Compared to other shapes, the trapezoidal contact point effectively reduces stress concentration, thereby lowering the risk of wear and damage.

[0046] Specifically, the linear guide shaft 3 has a special installation state in the sliding fit groove 21. The reference positioning groove 11 has a recessed and deepened relief groove 10 in the middle of the groove body. Therefore, the linear guide shaft 3 is suspended in the sliding fit groove 21. The two ends of the linear guide shaft 3 extend outside the reference positioning groove 11 respectively. The purpose is to make the linear guide shaft 3 stably fixed on the base 1. To a certain extent, the suspended design also avoids the carrier 2 from approaching the deepened relief groove 10 on the base 1.

[0047] Meanwhile, since the end of the linear guide shaft 3 is not restricted by the reference positioning groove 11, various fixing methods can be used to fix the linear guide shaft 3 during the fixing process. The advantage of this method is that it allows the linear guide shaft 3 to form multiple unified positioning points on the base 1, and the two ends of the linear guide shaft 3 can be detached to achieve disassembly and maintenance.

[0048] The base 1 is provided with a retaining structure 12 that keeps at least a portion of the linear guide shaft 3 in static contact with the reference positioning groove 11. At least a portion of the retaining structure 12 is sleeved and connected to one end segment of the linear guide shaft 3 in the axial direction. The remaining portion of the retaining structure 12 is pressed against the other end segment of the linear guide shaft 3 in the axial direction of the reference positioning groove 11 from the groove opening towards its bottom. Through the connection with the linear guide shaft 3, the retaining structure 12 ensures the fixed stability of the linear guide shaft 3 and reduces the shaking and axial displacement that occur during movement. At the same time, the remaining portion of the retaining structure 12 keeps the linear guide shaft 3 in a relatively static state with the reference positioning groove 11, preventing unnecessary vibration of the linear guide shaft 3 from the outside and keeping at least a portion of the linear guide shaft 3 in a straight state, thus ensuring the smooth movement of the carrier 2.

[0049] Specifically, such as Figure 3 and Figure 7 As shown, the retaining structure 12 includes a retaining sleeve 120 disposed on the base 1. The retaining sleeve 120 is integrally formed with the base 1, for example. One axial end segment of the linear guide shaft 3 is inserted into the retaining sleeve 120 and the two are fixed with adhesive. The retaining structure 12 also includes a retainer 121 that presses against the other axial end segment of the linear guide shaft 3. Specifically, the retainer 121 is at least partially grooved and the retainer 121 and the other axial end segment of the linear guide shaft 3 are in tangential contact. The linear guide shaft 3 and the retaining sleeve 120 are fixedly connected. After the retaining sleeve 120 is fixed, it can prevent the linear guide shaft 3 from shifting in the axial direction and prevent the linear guide shaft 3 from rotating around the axis. The advantage is that the retaining sleeve 120 is disposed on the base 1 and is shaped like a hole. During the installation process, the linear guide shaft 3 passes through the retaining sleeve 120 into the base. The two ends of the linear guide shaft 3 are fixedly connected to the retaining sleeve 120 and the retainer 121, respectively.

[0050] like Figure 7 and 11 As shown, the retainer 121 has an insert portion 1210 embedded in the base 1. The base 1 is provided with a limiting boss 13, and the limiting boss 13 is also provided with an insert groove 14 for the insert portion 1210 to fit into the base. The insert portion 1210 and the base 1 are fixed by adhesive bonding or the base 1 is injection molded to fix the insert portion 1210.

[0051] The cage 121 and the insert 1210 form a U-shape, for example, by directly molding a metal material to facilitate mass production.

[0052] In this embodiment, the linear guide shaft 3 has a reduced diameter portion at one end near the retainer 121. The reduced diameter portion is cylindrical and tangentially contacts the retainer 121. The reduced diameter portion improves the efficiency of pre-insertion into the retaining sleeve 120.

[0053] The design principle of this embodiment is as follows:

[0054] The base 1 is injection molded, and the reference positioning groove 11 on the base 1 is directly formed during injection molding. Injection molding can ensure high-precision dimensional stability, so that at least two reference positioning grooves 11 are in the same straight line and the groove walls of the reference positioning grooves 11 are flush. On this basis, at least a portion of the cross-section of the linear guide shaft 3 is placed in the reference positioning groove 11, so that the section where the linear guide shaft 3 and the sliding fit groove 21 are engaged is at least in a straight line. At the same time, the retaining structure of this embodiment can form a reverse pressing after the linear guide shaft 3 is loaded, so as to prevent the linear guide shaft 3 from bending deformation and extend the service life of the linear guide shaft 3.

[0055] Secondly, when the carrier 2 moves to one end of the linear guide shaft 3 and is in position, a sliding fit groove 21 and a reference positioning groove 11 are positioned facing each other, so that the carrier 2 and the optical components it carries are supported by the base 1 fixed to the linear guide shaft 3. Similarly, when the carrier 2 moves to the other end of the linear guide shaft 3 and is in position, another sliding fit groove 21 and another reference positioning groove 11 are positioned facing each other. Example 2

[0056] Based on the guiding mechanism of the lens driving carrier and base in Embodiment 1, the periscope lens driving device in this embodiment includes the guiding mechanism of the lens driving carrier and base in Embodiment 1.

[0057] like Figure 1-Figure 2 As shown, in this embodiment, the periscope lens driving device also includes a carrier moving body 5 loaded on the carrier 2, wherein the carrier moving body 5 is the carrier for zooming movement, and the carrier 2 in the above embodiment 1 is the carrier for focusing movement. When the device is working, the carrier 2 first drives the carrier moving body 5 to move together for focusing. After focusing is completed, the carrier moving body 5 moves independently relative to the carrier 2 to complete zooming.

[0058] Similarly, Figures 4-5 As shown, a motion guiding mechanism is also provided between the carrier 2 and the moving body 5. In this embodiment, the motion guiding mechanism is composed of several balls 50, thereby reducing the moving friction between the carrier 2 and the moving body 5, making the relative sliding between them smoother. Similarly, the several balls 50 between the carrier 2 and the moving body 5 can be arranged in a triangular structure to achieve a balance between stability and friction. One ball 50 is provided between the moving body 5 and the horizontal connecting part along one side of the first direction, and two balls 50 arranged along the optical axis Z direction are provided between the moving body 5 and the connecting part along the other side of the first direction.

[0059] The periscope lens driving device is further provided with a first driving mechanism 6 for driving the carrier 2 to move along the optical axis Z, and a second driving mechanism 7 for driving the moving body 5 to move along the optical axis Z. The first driving mechanism 6 and the second driving mechanism 7 can be electromagnetically driven or piezoelectrically driven. For example, the first driving mechanism 6 includes a first driving magnet 61 and a first driving coil 62, either of which is located on the base 1 and the other is located on the carrier 2. The second driving mechanism 7 includes a second driving magnet 71 and a second driving coil 72, either of which is located on the base 1 and the other is located on the moving body 5.

[0060] In this embodiment, the first driving coil 62 and the second driving coil 72 are mounted on the base 1, while the first driving magnet 61 and the second driving magnet 71 are mounted on the carrier 2 and the moving body 5, respectively. The first driving magnet 61 and the second driving magnet 71 are based on the Hellbeck magnet array and optimized according to the stroke magnet arrangement to enhance the magnetic field strength. At the same time, in order to cooperate with the magnets, the first driving coil 62 and the second driving coil 72 are set as a single coil or a combination of two coils to provide a stable driving force stroke.

[0061] To enhance driving force and meet the requirements of long-stroke driving, the thickness of the portion of the first driving magnet 61 located between the first limiting portion 22 and the second limiting portion 23 in the first direction is less than the thickness of at least the remaining portion of the first driving magnet 61. In this embodiment, both the first driving magnet 61 and the second driving magnet 71 include a first magnetic block, a second magnetic block, a third magnetic block, a fourth magnetic block, and a fifth magnetic block arranged along the optical axis and coplanar on the side facing the first driving coil 62 and the second driving coil 72, respectively. The first magnetic block, the third magnetic block, and the fifth magnetic block are all magnetized in the first direction and form SNS-arranged magnetic poles on the side facing the first driving coil 62 and the second driving coil 72, respectively. The second magnetic block and the fourth magnetic block are both magnetized in the Z direction of the optical axis.

[0062] The thickness of the first and second magnetic blocks in the first driving magnet 61 along the first direction is greater than the thickness of the third, fourth, and fifth magnetic blocks along the first direction. A portion of the third magnetic block is mounted on one side of the carrier 2, and another portion extends to the vertical connecting portion. The first driving magnet 61 also includes a supplementary magnetic block located on the side of the third magnetic block away from the first driving coil 62. The supplementary magnetic block is close to the side of the third magnetic block away from the second limiting portion 23, and is also magnetized in the first direction. The faces of the supplementary magnetic block and the third magnetic block have opposite magnetic poles. The sum of the thicknesses of the supplementary magnetic block and the third magnetic block along the first direction is the same as the thickness of the second magnetic block along the first direction. In actual implementation, the length of each magnetic block along the optical axis Z direction can be adjusted to determine whether the stronger electromagnetic output is in the middle or at the end. In other embodiments, at least a portion of the first driving magnet 61 includes at least two sets of magnets arranged along the first direction, and the two sets of magnets have different lengths along the optical axis Z direction.

[0063] In this embodiment, buffer mechanisms are provided between the carrier 2 and the base 1, and between the carrier 2 and the moving body 5 along the Z-axis of the optical axis, thereby reducing the impact force between components and improving the service life of the device. The buffer mechanism is, for example, an outwardly protruding part to reduce the contact area.

[0064] In addition, the periscope lens driving device also includes a prism driving mechanism (existing technology), which is located on the incident light side of the carrier 2. Example 3

[0065] Based on the periscope lens driving device of Embodiment 2, the camera module of this embodiment includes the periscope lens driving device of Embodiment 2.

[0066] like Figure 14 As shown, camera modules are used in electronic devices, including 3C products such as computers, mobile smartphones (such as mobile phones, tablets, etc.), and digital cameras. In this embodiment, the module is used as a camera imaging component of a mobile smartphone.

[0067] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A guiding mechanism for a lens driving carrier and a base, comprising a linear guide shaft (3) fixed to at least one side of the base (1) and slidingly engaged with the carrier (2), characterized in that, The carrier (2) is provided with a sliding groove (21) that slides with the linear guide shaft (3), the base (1) is provided with a reference positioning groove (11) for bearing at least a portion of the axial section of the linear guide shaft (3), and the base (1) is provided with a retaining structure (12) that makes at least a portion of the axial section of the linear guide shaft (3) always in static contact with the reference positioning groove (11).

2. The guiding mechanism for the lens driving carrier and base according to claim 1, characterized in that, The base (1) is provided with reference positioning grooves (11) at both ends near the linear guide shaft (3). The two ends of the linear guide shaft (3) extend out of the reference positioning grooves (11) and are suspended.

3. The guiding mechanism for the lens driving carrier and base according to claim 1 or 2, characterized in that, At least a portion of the retaining structure (12) is sleeved to one end segment of the linear guide shaft (3) in the axial direction, and the remaining portion of the retaining structure (12) is pressed against the other end segment of the linear guide shaft (3) in the axial direction of the groove of the reference positioning groove (11) towards its bottom.

4. The guiding mechanism for the lens driving carrier and base according to claim 3, characterized in that, The retaining structure (12) includes a retaining sleeve (120) disposed on the base (1), one end segment of the linear guide shaft (3) is inserted into the retaining sleeve (120), and the retaining structure (12) also includes a retainer (121) pressing against the other end segment of the linear guide shaft (3) in the axial direction.

5. The guiding mechanism for the lens driving carrier and base according to claim 4, characterized in that, At least a portion of the retainer (121) is grooved and the retainer (121) and the other end segment of the linear guide shaft (3) are in tangential contact axially.

6. The guiding mechanism for the lens driving carrier and base according to claim 5, characterized in that, The retainer (121) has an insert (1210) embedded in the base (1), the insert (1210) and the base (1) are fixed by adhesive bonding or the base (1) is injection molded and the insert (1210) is embedded.

7. The guiding mechanism for the lens driving carrier and base according to claim 1 or 2, characterized in that, There is at least one sliding groove (21), and both the sliding groove (21) and the reference positioning groove (11) are V-shaped grooves. The linear guide shaft (3) and the sliding groove (21) are in tangential active contact, and the linear guide shaft (3) and the reference positioning groove (11) are in tangential contact.

8. The guiding mechanism for the lens driving carrier and base according to claim 1, characterized in that, The guiding mechanism further includes a rolling member (4) disposed between the other side of the base (1) and the carrier (2), at least a portion of the rolling member (4) rollingly contacts the base (1), and the remaining portion of the rolling member (4) rollingly contacts the carrier (2).

9. A periscope lens driving device, characterized in that, The periscope lens driving device includes a lens driving carrier and a base guiding mechanism as described in any one of claims 1-8, and also includes a carrier moving body (5) loaded on the carrier (2). The carrier (2) drives the carrier moving body (5) together to move along the optical axis (Z) under the drive of the first driving mechanism (6). The carrier moving body (5) moves relative to the carrier (2) along the optical axis (Z) under the drive of the second driving mechanism (7). The first driving mechanism (6) and the linear guide shaft (3) are spaced apart in a plane perpendicular to the optical axis (Z).

10. A camera module, characterized in that, The camera module includes the periscope lens driving device as described in claim 9.

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