Zoom driving device

Abstract

The utility model discloses a zoom driving device, which comprises a carrier, a base and a driving assembly, a guide mechanism is arranged between the base and the carrier, and the guide mechanism comprises a guide groove arranged on the inner side wall of the base and a guide bulge arranged on the outer side wall of the carrier. The guide protrusion abuts against the interior of the guide groove and can slide in the guide groove in the direction of the optical axis, the guide protrusion is fixedly connected with the outer side wall of the carrier through a connecting mechanism, the connecting mechanism comprises a limiting column, a connecting column and a limiting column containing groove, and the limiting column containing groove is formed in the outer side wall of the carrier. The limiting column containing groove is formed in the carrier, and the limiting column is arranged in the limiting column containing groove and fixedly connected with the guiding protrusion through the connecting column. The connecting mechanism provided by the utility model can improve the structural strength of the connection between the guide bulge and the carrier.

Description

Technical Field

[0001] The utility model relates to the technical field of optical imaging equipment, in particular to a zoom driving device. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and lightweight designs to provide users with more choices.

[0003] Some electronic devices with camera or video recording functions are provided with a lens driving device to drive an optical component such as a lens to move, thereby achieving an autofocus function. Light can pass through the optical component to form an image on a photosensitive component.

[0004] In order to realize the autofocus function, the existing lens driving device usually includes a magnet group, an AF coil and a carrier for mounting the lens. The magnet group is installed on a frame, and the AF coil is installed on the carrier. Under the action of the AF coil and the magnet group, the carrier and the lens reciprocate along the optical axis, thereby realizing the autofocus operation of the lens.

[0005] The magnet group of the existing lens driving device is usually composed of multiple magnets, such as 4 magnets distributed around the frame, which makes the overall assembly complicated and the thickness in the direction perpendicular to the optical axis is thick, which affects the overall volume of the electronic product and is not conducive to the thin and light design of the electronic product. Utility Model Content

[0006] The purpose of the utility model is to provide a zoom driving device to solve the problems existing in the above-mentioned prior art.

[0007] In order to solve the above problems, according to the first aspect of the utility model, a zoom drive device is provided, comprising a carrier, a base and a drive assembly, the base being provided with a chamber and the carrier being arranged in the chamber, the drive assembly being configured to drive the carrier to move relative to the base along the optical axis direction and thereby drive the lens installed in the carrier to move along the optical axis direction to achieve a zoom operation of the lens, a guide mechanism is provided between the base and the carrier, the guide mechanism comprising a guide groove provided on the inner side wall of the base and a guide protrusion provided on the outer side wall of the carrier, the guide protrusion abutting against the guide groove and being able to slide in the guide groove along the optical axis direction, wherein the guide protrusion is fixedly connected to the outer side wall of the carrier by a connecting mechanism, the connecting mechanism comprising a limiting column, a connecting column and a limiting column accommodating groove, the limiting column accommodating groove being provided on the carrier, the limiting column being provided in the limiting column accommodating groove and being fixedly connected to the guide protrusion by the connecting column.

[0008] Preferably, the limiting column includes protrusions arranged at both ends of the limiting column and a limiting column body arranged in the middle of the limiting column, the outer diameter of the protrusion is larger than the outer diameter of the limiting column body, and the two protrusions protrude from the upper end surface of the carrier and the lower end surface of the carrier respectively.

[0009] Preferably, the limiting column, the connecting column and the guiding protrusion are formed by secondary molding of the same material based on the shape of the carrier, or the limiting column, the connecting column and the guiding protrusion are made of different materials and then connected to each other to form a connecting structure.

[0010] Preferably, the connecting mechanism also includes a connecting column accommodating groove, which is arranged on the carrier and connected to the limiting column accommodating groove, the connecting column is arranged in the connecting column accommodating groove and the two ends of the connecting column are respectively fixedly connected to the limiting column and the guide protrusion.

[0011] Preferably, the connecting column is arranged in the connecting column receiving groove and one end of the connecting column extends into the limiting column receiving groove, and the limiting column is formed in the limiting column receiving groove through a molding process and is fixedly connected to the connecting column.

[0012] Preferably, the connection mechanism comprises a plurality of the connection columns, and the plurality of the connection columns are arranged side by side between the limiting column body and the guide protrusion.

[0013] Preferably, the guide mechanism includes a plane guide mechanism and an inclined plane guide mechanism, the plane guide mechanism includes a plane guide groove and a plane guide protrusion, the inclined plane guide mechanism includes an inclined plane guide groove and an inclined plane guide protrusion, the plane guide protrusion or the inclined plane guide protrusion is fixedly connected to the outer side wall of the carrier through a connecting mechanism, wherein,

[0014] The plane guide protrusion abuts against the plane guide groove and can slide in the plane guide groove along the optical axis direction, and the inclined plane guide protrusion abuts against the inclined plane guide groove and can slide in the inclined plane guide groove along the optical axis direction.

[0015] Preferably, the outer plane of the planar guide protrusion abuts against the planar guide groove, and at least one inclined surface of the inclined guide protrusion abuts against the inclined guide groove.

[0016] Preferably, the cross-section of the planar guide protrusion is rectangular, and the cross-section of the inclined guide protrusion is triangular, trapezoidal, or semicircular.

[0017] Preferably, the driving component is arranged between the base and the carrier and the plane guide mechanism and the inclined guide mechanism are respectively provided on both sides of the driving component; optionally, the driving component includes a magnet and a coil, the magnet is provided on one side of the carrier as a contact surface, a circuit board is provided on the outer wall of one side of the base, the coil is provided on the inner side of the circuit board and connected to the coil, and the coil is located on the outer side of the magnet; optionally, an adsorption iron sheet is provided on the outer side of the circuit board, and the adsorption iron sheet is fixedly mounted on the base, in the circuit board mounting groove or on the inner wall of the outer shell; optionally, a position sensor is also provided on the inner side of the circuit board, and the position sensor is located on the outer side of the magnet; optionally, a avoidance hole connected inside and outside is dug on one side of the base, the coil is arranged along the inner wall of the avoidance hole, and the position sensor is arranged in the avoidance hole.

[0018] The beneficial effect of the utility model is that the connection mechanism of the utility model can improve the structural strength of the connection between the guide protrusion and the carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model, wherein the base and the shell are assembled together;

[0020] Figure 2 for Figure 1 A further exploded view of the base and the housing is separated;

[0021] Figure 3 Another structural schematic diagram of the utility model;

[0022] Figure 4 for Figure 3 Exploded diagram of

[0023] Figure 5 for Figure 3 Section view along plane AA. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings to describe the preferred embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0025] In the following description, certain specific details are set forth for the purpose of illustrating the various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0026] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0027] In the following description, in order to clearly demonstrate the structure and working mode of the utility model, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The first embodiment of the utility model provides a zoom driving device, referring to Figure 1 and Figure 2The zoom drive device includes a housing 1, a base 2, a drive assembly and a carrier 4, wherein the drive assembly includes a magnet 31 and a coil 32. A hollow cavity is provided between the housing 1 and the base 2, and the housing 1 is sleeved on the outside of the base 2 to form the hollow cavity. The housing 1 and the base 2 are preferably connected by snapping to form the hollow cavity. The drive assembly and the carrier 4 are both arranged in the hollow cavity, and a connected lens through hole is provided in the middle of the zoom drive device along the longitudinal direction (up and down direction) to accommodate the lens. The carrier 4 moves longitudinally in the hollow cavity, and the lens is mounted on the carrier 4 and moves longitudinally with the carrier 4 to realize the zoom operation of the lens.

[0031] Specifically, the carrier 4 is sleeved in the base 2 and can slide longitudinally relative to the base 2. A magnet 31 is provided as a contact surface on one side of the carrier 4, and the contact surface abuts against the inner wall of the base 2. A circuit board 5 is provided on the outer wall of one side of the base 2, and a coil 32 is provided inside the circuit board 5 and connected to the coil 32, and the coil 32 is located outside the magnet 31.

[0032] When in use, the coil 32 is energized through the circuit board 5 , and the coil 32 cooperates with the magnet 31 inside thereof to realize the longitudinal movement of the carrier 4 .

[0033] The utility model does not have a frame for installing the magnet 31 group, and only one magnet 31 is provided and the magnet 31 is arranged on the side of the carrier 4. The coil 32 used in conjunction with the magnet 31 is directly arranged on the base 2 and the outer side thereof is a circuit board 5 connected thereto, and the circuit connection is simple and convenient. Through the above-mentioned organic and reasonable design, the utility model has a compact and reliable overall structure and a small volume, and is very suitable for lightweight and miniaturized electronic products.

[0034] Optionally, the circuit board 5 is an FPC board.

[0035] Optional, see Figure 1 and Figure 2 A magnet groove 41 is provided on the contact surface of the carrier 4, a fixed iron sheet 6 is fixedly connected in the magnet groove 41, and the magnet 31 is located in the magnet groove 41 and adsorbed with the fixed iron sheet 6 to realize the positioning of the magnet 31. The magnet 31 is preferably located outside the fixed iron sheet 6 so as not to affect the cooperation between the magnet 31 and the coil 32.

[0036] Optional, see Figure 1 and Figure 2 A circuit board installation groove 21 is provided on one side outer wall of the base 2 , and the circuit board is installed in the circuit board installation groove 21 .

[0037] Optionally, when the circuit board 5 is installed in the circuit board installation slot 21, the wiring portion of the circuit board 5 extends out of the circuit board installation slot 21 to facilitate wiring. Figure 1 and Figure 2, a plane guide groove 22 and an inclined plane guide groove 23 are provided on the inner wall of the base 2. The length direction of the plane guide groove 22 and the inclined plane guide groove 23 is consistent with the direction of the optical axis, that is, Figure 1 and Figure 2 The vertical direction in .

[0038] The outer wall of the contact surface of the carrier 4 is provided with a plane guide protrusion 42 and an inclined plane guide protrusion 43, both of which are long strip-shaped protrusions whose length direction is consistent with the direction of the optical axis. The plane guide protrusion 42 abuts against the plane guide groove 22 and can slide longitudinally in the plane guide groove 22, and the inclined plane guide protrusion 43 abuts against the inclined plane guide groove 23 and can slide longitudinally in the inclined plane guide groove 23.

[0039] The matching design of the planar guide protrusion 42 and the planar guide groove 22 , and the matching design of the inclined guide protrusion 43 and the inclined guide groove 22 , provide a good auxiliary guiding effect when the carrier 4 moves longitudinally.

[0040] Optionally, the outer plane of the planar guide protrusion 42 abuts against the planar guide groove 22 , that is, the surface of the planar guide protrusion 42 abutting against the planar guide groove 22 is a surface parallel to the contact surface.

[0041] At least one inclined surface of the inclined surface guide protrusion 43 abuts against the inclined surface guide groove 23. That is, the surface of the inclined surface guide protrusion 43 abutting against the inclined surface guide groove 23 is a surface intersecting with the contact surface.

[0042] When the inclined surface guide protrusion 43 has only one inclined surface, for example, the shape of the inclined surface guide protrusion 43 is a right triangular prism with a right triangle bottom surface, its inclined surface abuts against the inclined surface guide groove 23. For example, the shape of the inclined surface guide protrusion 43 is semicircular, and the arc surface is the inclined surface.

[0043] When the inclined surface guide protrusion 43 has at least two inclined surfaces, for example, when the shape of the inclined surface guide protrusion 43 is a right quadrangular prism with a trapezoidal bottom surface, the inclined surfaces of the inclined surface guide grooves 23 on both sides abut against each other.

[0044] Optionally, the cross section of the planar guide protrusion 42 is a rectangular structure. The cross section of the inclined guide protrusion 43 is a triangular or trapezoidal structure.

[0045] Optionally, the planar guide protrusion 42 is in the shape of a cuboid. The inclined guide protrusion 43 is in the shape of a right prism with more than three sides.

[0046] like Figure 1 and Figure 2 As shown, the planar guide protrusion 42 is in the shape of a cuboid, and the inclined guide protrusion 43 is in the shape of a right quadrangular prism.

[0047] Optionally, a lubricating material layer is applied on at least one contact surface between the planar guide protrusion 42 and the planar guide groove 22 , and on at least one contact surface between the inclined guide protrusion 43 and the inclined guide groove 23 .

[0048] The design of the lubricating material layer can reduce the friction when the carrier 4 slides longitudinally.

[0049] A lubricating material layer may be applied to each contact surface of the planar guide protrusion 42 and the planar guide groove 22. Figure 1 and Figure 2 As shown, a lubricating material layer may also be applied only on the contact surface of the planar guide protrusion 42 .

[0050] A lubricating material layer may be applied to each contact surface of the inclined surface guide protrusion 43 and the inclined surface guide groove 23. Figure 1 and Figure 2 As shown, a lubricating material layer may also be applied only on the contact surface of the inclined guide protrusion 43 .

[0051] Optionally, the lubricating material layer is a lubricating material layer made by applying a micro-particle lubricating material on the contact surface, preferably a lubricating material layer made by applying a powder lubricating material on the contact surface, and more preferably a lubricating material layer made by applying a micro-particle powder lubricating material on the contact surface. The lubricating material layer can also be made of other existing lubricating materials.

[0052] Optional, see Figure 1 and Figure 2 An adsorption iron sheet 8 is arranged on the outside of the circuit board 5 , and the adsorption iron sheet 8 is fixedly mounted on the base 2 , in the circuit board mounting groove 21 or on the inner wall of the shell 1 .

[0053] The adsorption iron sheet 8 corresponds to the magnet 31 and generates an adsorption force between the two. Under the adsorption force, the side of the carrier 4 where the magnet 31 is installed, i.e., the contact surface side, will abut against the inner wall of the base 2 without affecting the longitudinal movement of the carrier 4. In addition, after such a design, the carrier 4 can contact the lubricating material layer when sliding longitudinally with the base 2, thereby reducing sliding friction.

[0054] The effect of setting the plane guide protrusion 42 and the inclined plane guide protrusion 43 for cooperation and guidance is mainly as follows: under the action of the adsorption iron sheet 8 and the magnet 31, the carrier 4 will abut against the inner wall of the base 2, so that the inclined plane guide protrusion 43 will abut against the inclined plane guide groove 23, and under the action of the inclined plane, the end face of the inclined plane guide protrusion 43 will contact the end face of the inclined plane guide groove 23, so as to achieve precise positioning between the carrier 4 and the base 2. This design allows a certain amount of small gap to exist between the plane guide groove 22 and the plane guide protrusion 42 during the production and assembly of the components, which can reduce the production accuracy of a certain part, while ensuring the assembly accuracy of the device and improving the assembly rate.

[0055] Optional, see Figure 1 and Figure 2 A position sensor 9 is also provided on the inner side of the circuit board 5, and the position sensor 9 is located on the outer side of the magnet 31. The motion position can be monitored by the cooperation between the position sensor 9 and the magnet 31.

[0056] Optional, see Figure 1 and Figure 2 A side of the base 2 is provided with an escape hole 24 connected to the inside and outside, the coil 32 is arranged along the inner wall of the escape hole 24, and the position sensor 9 is arranged in the escape hole 24. There is no shielding between the coil 32 and the magnet 31 to avoid environmental interference. There is no shielding between the position sensor 9 and the magnet 31, and the movement of the inner magnet 31 can be directly detected.

[0057] The second embodiment of the utility model provides a zoom driving device, referring to Figure 3 , Figure 4 and Figure 5 The zoom driving device 10 includes a carrier 11, a base (not shown in the figure) and a driving assembly (not shown in the figure), the base is provided with a chamber and the carrier 11 is arranged in the chamber, the driving assembly is configured to drive the carrier 11 to move relative to the base along the optical axis direction and then drive the lens installed in the carrier 11 to move along the optical axis direction to achieve the zoom operation of the lens, a guide mechanism 12 is provided between the base and the carrier 11, the guide mechanism 12 includes a guide groove (not shown in the figure) provided on the inner side wall of the base and a guide protrusion 121 provided on the outer side wall of the carrier 11, the guide protrusion 121 abuts in the guide groove and can slide in the guide groove along the optical axis direction, wherein the guide protrusion 121 is fixedly connected to the outer side wall of the carrier 11 through a connecting mechanism 13, the connecting mechanism 13 includes a limiting column 131, a connecting column 132 and a limiting column accommodating groove 133, the limiting column accommodating groove 133 is provided on the carrier 11, the limiting column 131 is provided in the limiting column accommodating groove 133 and is fixedly connected to the guide protrusion 121 through the connecting column 132.

[0058] Through such a design, the structural strength of the connection between the guide protrusion and the carrier can be improved.

[0059] It should be noted that:

[0060] 1. Reference Figure 1 , Figure 2 The guide protrusions in this embodiment may refer to the planar guide protrusions 42 and the inclined guide protrusions 43 in the first embodiment, and the guide grooves in this embodiment may refer to the planar guide grooves 22 and the inclined guide grooves 23 in the first embodiment.

[0061] 2. The difference between this embodiment and the first embodiment lies in the connection method between the guide protrusion and the carrier. This embodiment only describes the difference and the similarities are not repeated.

[0062] Optional, see Figures 1 to 5 The limiting column 131 includes protrusions 1311 arranged at both ends of the limiting column 131 and a limiting column body 1312 arranged in the middle of the limiting column 131, and the outer diameter of the protrusion 1311 is larger than the outer diameter of the limiting column body 1312, wherein the two protrusions 1311 protrude from the upper end surface 111 of the carrier 11 and the lower end surface 112 of the carrier 11 respectively.

[0063] Through such a design, the structure of the limit column is a cylindrical structure with large outer diameters at the top and bottom and a small outer diameter in the middle, which not only prevents the limit column from sliding along the optical axis, but also the top end and the bottom end of the limit column extend out of the upper end surface and the lower end surface of the carrier respectively, which can play the effect of anti-collision protrusions, thereby preventing the carrier from colliding with the top end of the shell and the bottom end of the base when moving along the optical axis.

[0064] Optional, see Figures 1 to 5 The limiting column 131, the connecting column 132 and the guide protrusion (the plane guide protrusion and the inclined guide protrusion are made of) are formed by secondary molding of the same material based on the shape of the carrier, or the limiting column 131, the connecting column 132 and the guide protrusion (the plane guide protrusion and the inclined guide protrusion are made of) are made of different materials and then connected to each other to form a connecting structure.

[0065] Specifically, for example, the plane guide protrusion, the inclined guide protrusion and the connecting column are secondary molded of metal material, a part of the molded connecting column extends into the limiting column accommodating groove, and finally plastic is poured in the limiting column accommodating groove to form the limiting column, thereby realizing the connection between the limiting column and the connecting column.

[0066] Specifically, the plane guide protrusions and the bevel guide protrusions can be designed as secondary molding structures, that is, the plane guide protrusions and the bevel guide protrusions are structures formed by secondary molding on the basic structure of the carrier, and their secondary molding materials can be metal, ceramic, plastic, rubber, etc., and their shapes can also be semi-cylindrical, trapezoidal columnar, etc.

[0067] Optional, see Figures 1 to 5 The connecting mechanism 13 also includes a connecting column receiving groove 134, which is arranged on the carrier 11 and is connected to the limiting column receiving groove 133. The connecting column 132 is arranged in the connecting column receiving groove 134 and the two ends of the connecting column 132 are respectively fixedly connected to the limiting column 131 and the guide protrusion 121.

[0068] Optional, see Figures 1 to 5The connecting column 132 is arranged in the connecting column receiving groove 134 and one end of the connecting column 132 extends into the limiting column receiving groove 133. The limiting column 131 is formed in the limiting column receiving groove 133 through a molding process and is fixedly connected to the connecting column 132.

[0069] Such a design facilitates the forming of the connecting column and enhances the structural strength of the connection between the guide protrusion and the carrier.

[0070] Optional, see Figures 1 to 5 The connection mechanism 13 includes a plurality of connection columns 132 , and the plurality of connection columns 132 are arranged side by side between the limiting column body 1312 and the guide protrusion 121 .

[0071] Specifically, a plurality of connection columns 132 may be arranged side by side along the optical axis direction between the limiting column body 1312 and the guide protrusion 121 .

[0072] Optionally, the guide mechanism 12 includes a plane guide mechanism 1201 and an inclined plane guide mechanism 1202, and the plane guide mechanism 1201 includes a plane guide groove (see Figures 1 to 5 ) and a planar guide protrusion 1211, the inclined plane guide mechanism 1202 includes an inclined plane guide groove (refer to Figures 1 to 5 ) and the inclined plane guide protrusion 1212, the plane guide protrusion 1211 or the inclined plane guide protrusion 1212 is fixedly connected to the outer wall of the carrier 11 by a connecting mechanism 13, wherein the plane guide protrusion 1211 abuts against the plane guide groove and can slide in the plane guide groove along the optical axis direction, and the inclined plane guide protrusion 1212 abuts against the inclined plane guide groove and can slide in the inclined plane guide groove along the optical axis direction.

[0073] Optionally, the driving assembly is disposed between the base and the carrier 11 and a plane guide mechanism 1201 and an inclined plane guide mechanism 1202 are respectively disposed on two sides of the driving assembly.

[0074] The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A zoom driving device, comprising a carrier, a base and a driving assembly, wherein the base is provided with a chamber and the carrier is arranged in the chamber, and the driving assembly is configured to drive the carrier to move along an optical axis relative to the base and then drive a lens installed in the carrier to move along the optical axis to achieve a zoom operation of the lens, characterized in that: A guide mechanism is provided between the base and the carrier, the guide mechanism comprising a guide groove provided on the inner side wall of the base and a guide protrusion provided on the outer side wall of the carrier, the guide protrusion abuts against the guide groove and can slide in the guide groove along the optical axis direction, wherein: The guide protrusion is fixedly connected to the outer side wall of the carrier via a connecting mechanism, and the connecting mechanism includes a limiting column, a connecting column and a limiting column accommodating groove, the limiting column accommodating groove is arranged on the carrier, the limiting column is arranged in the limiting column accommodating groove and is fixedly connected to the guide protrusion via the connecting column.

2. The zoom driving device according to claim 1, characterized in that: The limiting column includes protrusions arranged at both ends of the limiting column and a limiting column body arranged in the middle of the limiting column, the outer diameter of the protrusion is larger than the outer diameter of the limiting column body, and the two protrusions protrude from the upper end surface of the carrier and the lower end surface of the carrier respectively.

3. The zoom driving device according to claim 1, characterized in that: The limiting column, the connecting column and the guiding protrusion are formed by secondary molding of the same material based on the shape of the carrier, or the limiting column, the connecting column and the guiding protrusion are made of different materials and then connected to each other to form a connecting structure.

4. The zoom driving device according to claim 1, characterized in that: The connecting mechanism also includes a connecting column accommodating groove, which is arranged on the carrier and communicated with the limiting column accommodating groove. The connecting column is arranged in the connecting column accommodating groove and the two ends of the connecting column are respectively fixedly connected to the limiting column and the guide protrusion.

5. The zoom driving device according to claim 4, characterized in that: The connecting column is arranged in the connecting column receiving groove and one end of the connecting column extends into the limiting column receiving groove. The limiting column is formed in the limiting column receiving groove through a molding process and is fixedly connected to the connecting column.

6. The zoom driving device according to claim 2, characterized in that: The connection mechanism includes a plurality of connection posts, and the plurality of connection posts are arranged side by side between the limiting post body and the guide protrusion.

7. The zoom driving device according to claim 1, characterized in that: The guide mechanism includes a plane guide mechanism and an inclined plane guide mechanism, the plane guide mechanism includes a plane guide groove and a plane guide protrusion, the inclined plane guide mechanism includes an inclined plane guide groove and an inclined plane guide protrusion, the plane guide protrusion or the inclined plane guide protrusion is fixedly connected to the outer side wall of the carrier through a connecting mechanism, wherein, The plane guide protrusion abuts against the plane guide groove and can slide in the plane guide groove along the optical axis direction, and the inclined plane guide protrusion abuts against the inclined plane guide groove and can slide in the inclined plane guide groove along the optical axis direction.

8. The zoom driving device according to claim 7, characterized in that: The outer plane of the planar guide protrusion abuts against the planar guide groove, and at least one inclined surface of the inclined guide protrusion abuts against the inclined guide groove.

9. The zoom driving device according to claim 7, characterized in that: The cross section of the planar guide protrusion is rectangular, and the cross section of the inclined guide protrusion is triangular, trapezoidal, or semicircular.

10. The zoom driving device according to claim 7, characterized in that: The driving component is arranged between the base and the carrier, and the plane guide mechanism and the inclined plane guide mechanism are respectively arranged on two sides of the driving component.

11. The zoom driving device according to claim 10, characterized in that: The driving component includes a magnet and a coil. The magnet is arranged on one side of the carrier as a contact surface. A circuit board is arranged on the outer wall of one side of the base. The coil is arranged on the inner side of the circuit board and connected to the coil. The coil is located on the outer side of the magnet.

12. The zoom driving device according to claim 11, characterized in that: The zoom driving device also includes a shell. An adsorption iron sheet is arranged on the outer side of the circuit board. The adsorption iron sheet is fixedly installed on the base, in the circuit board installation groove or on the inner wall of the shell.

13. The zoom driving device according to claim 12, characterized in that: A position sensor is also arranged on the inner side of the circuit board, and the position sensor is located on the outer side of the magnet.

14. The zoom driving device according to claim 13, characterized in that: A evacuation hole communicating with the inside and outside is dug on one side of the base, the coil is arranged along the inner wall of the evacuation hole, and the position sensor is arranged in the evacuation hole.

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