Driving device and camera module

Abstract

The invention relates to the technical field of camera equipment, and discloses a driving device and a camera module. The driving device comprises a base, a shell, a carrier, a driving element, a housing and a damping part, the shell is connected with the base, and a containing space is formed between the shell and the base; the carrier is arranged in the accommodating space; the driving element is connected between the carrier and the base and is configured to drive the carrier to move in a first direction relative to the base; the housing is arranged on the carrier and is provided with an open structure for avoiding the driving element; the damping piece is connected with the housing and comprises a first damping part and a second damping part, the first damping part protrudes out of the top of the housing, and the second damping part protrudes out of the side portion of the housing. The camera module comprises a lens assembly and a driving device. The driving device can absorb noise generated in the moving process of a carrier, reduce impact force generated by vibration and improve the damping and noise reduction performance of the driving device.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging devices, and in particular, to a driving device and an imaging module. Background Art

[0002] In an imaging module, an optical lens is usually fixed on a carrier of a driving device. When the driving device is powered on, a driving element (such as a voice coil motor, etc.) drives the carrier and the lens to move linearly along the optical axis direction of the lens, so as to realize the functions of automatic focusing and defocusing.

[0003] In the prior art, in order to reduce the influence of external impact on the driving device, a limiting structure is usually arranged on the carrier. The limiting structure is located between the carrier and the housing of the driving device. When the housing is subjected to an external impact (such as a fall), the limiting structure can reduce the collision of the housing on the carrier. However, the existing solutions cannot reduce the noise generated by the movement and impact of the carrier during the operation of the driving device, that is, the existing limiting structure has poor shock absorption and noise reduction capabilities, resulting in a relatively large noise during the operation of the driving device.

[0004] Therefore, there is an urgent need for a driving device and an imaging module to solve the above technical problems. Summary of the Invention

[0005] Based on the above, the purpose of the present invention is to provide a driving device and an imaging module, which can reduce the noise generated during the movement of the carrier, better absorb the impact force generated by vibration, and improve the shock absorption and noise reduction performance of the driving device.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A driving device, comprising:

[0008] A base;

[0009] A housing, connected to the base, and a receiving space is formed between the housing and the base;

[0010] A carrier, disposed in the receiving space;

[0011] A driving element, connected between the carrier and the base, and configured to drive the carrier to move relative to the base in a first direction;

[0012] A cover, disposed on the carrier, and the cover is provided with an open structure for avoiding the driving element;

[0013] A shock absorber, connected to the cover, and the shock absorber includes a first shock absorption portion and a second shock absorption portion. The first shock absorption portion protrudes from the top of the cover, and the second shock absorption portion protrudes from the side of the cover.

[0014] In some possible embodiments, the shock-absorbing member further includes a connecting portion, and the first shock-absorbing portion and the second shock-absorbing portion are connected through the connecting portion; the connecting portion is L-shaped and is fixedly attached to the top and the side of the carrier respectively.

[0015] In some possible embodiments, a first fixing hole is provided at the top of the housing, and the first shock-absorbing portion is fixed in the first fixing hole; a second fixing hole is provided at the side of the housing, and the second shock-absorbing portion is fixed in the second fixing hole; a fixing groove is provided at the junction of the top and the side of the carrier, and the connecting portion is fixed in the fixing groove.

[0016] In some possible embodiments, for the part of the first shock-absorbing portion that is higher than the top surface of the housing, its radial dimension is greater than or equal to the dimension of the first fixing hole; and / or,

[0017] For the part of the second shock-absorbing portion that protrudes from the side of the housing, its radial dimension is greater than or equal to the dimension of the second fixing hole.

[0018] In some possible embodiments, a number of first limiting blocks protrude from the top and the side of the carrier, and a number of limiting holes corresponding to the positions of the first limiting blocks are provided on the housing, and the first limiting blocks pass through the corresponding limiting holes and protrude out of the housing; and / or,

[0019] A second limiting block is provided at the bottom of the carrier.

[0020] In some possible embodiments, the height by which the first shock-absorbing portion and the second shock-absorbing portion protrude from the housing is greater than the height by which the first limiting block protrudes from the housing.

[0021] In some possible embodiments, the material of the housing is metal; the material of the shock-absorbing member is silica gel, rubber or resin; the material of the carrier is plastic; and / or,

[0022] The number of the shock-absorbing members is multiple, and the multiple shock-absorbing members are spaced apart and distributed on the carrier.

[0023] In some possible embodiments, the shock-absorbing member is integrally formed with the housing by an injection molding process with the housing as an insert, and the carrier is integrally formed with the combination by an injection molding process.

[0024] In some possible embodiments, the base includes a bottom plate, and a support wall is provided on the bottom plate, and the support wall is located on one side of the bottom plate; the driving element is connected between the support wall and the carrier.

[0025] In some possible embodiments, a first sliding groove is provided on a side of the carrier opposite to the support wall, a second sliding groove is provided on a side of the support wall opposite to the carrier, and a guiding member is installed between the first sliding groove and the second sliding groove to slidably connect the carrier to the base; and / or,

[0026] A first installation groove is provided on a side of the carrier opposite to the support wall, and a second installation groove is provided on a side of the support wall opposite to the carrier; the driving element includes a coil assembly and a magnet assembly, the magnet assembly is installed in the first installation groove, and the coil assembly is installed in the second installation groove; the coil assembly includes a shielding plate, a circuit board, a coil, and a sensor, and the shielding plate, the circuit board, and the coil are sequentially installed on the support wall from far away from the magnet assembly to close to the magnet assembly, and the sensor is connected to the circuit board.

[0027] In some possible embodiments, a first through hole is provided on the carrier for installing a lens assembly; a second through hole is provided on the cover shell, a third through hole is provided on the outer shell, and a fourth through hole is provided on the bottom plate, and the second through hole, the third through hole, and the fourth through hole are coaxially arranged with the first through hole for the lens assembly to pass through.

[0028] An imaging module includes a lens assembly and the driving device described in any of the above solutions. The lens assembly is installed in the carrier of the driving device, and the driving device is used to drive the lens assembly to move in a first direction, and the first direction is the optical axis direction of the lens assembly.

[0029] Advantages of the present invention:

[0030] In the present invention, a shock-absorbing member is provided on the cover shell. The shock-absorbing member has a first shock-absorbing portion and a second shock-absorbing portion. The first shock-absorbing portion protrudes from the top of the cover shell and can buffer the impact force between the top of the carrier and the outer shell during the movement of the carrier; the second shock-absorbing portion protrudes from the side of the cover shell and can buffer the impact force between the side of the carrier and the outer shell during the movement of the carrier; the entire shock-absorbing member can absorb the noise generated by the impact during the movement of the carrier, reduce vibration, and improve the shock-absorbing and noise-reducing performance of the driving device. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the driving device provided by an embodiment of the present invention;

[0032] Figure 2 is a schematic structural diagram of the driving device provided by an embodiment of the present invention when the outer shell is removed;

[0033] Figure 3 is an exploded view of the driving device provided by an embodiment of the present invention;

[0034] Figure 4 is an exploded view of the carrier and magnet assembly provided by an embodiment of the present invention;

[0035] Figure 5 is a first-angle exploded view of the base and coil assembly provided by an embodiment of the present invention;

[0036] Figure 6 is a second-angle exploded view of the base and coil assembly provided by an embodiment of the present invention;

[0037] Figure 7 is an exploded view of the carrier, housing and shock absorber provided by an embodiment of the present invention;

[0038] Figure 8 is a schematic diagram of the bottom structure of the carrier provided by an embodiment of the present invention;

[0039] Figure 9 is a schematic diagram of the structure of the shock absorber provided by an embodiment of the present invention.

[0040] In the figure:

[0041] 1. Base; 11. Bottom plate; 111. Fourth through hole; 12. Support wall; 121. Second chute; 122. Second installation groove;

[0042] 2. Coil assembly; 21. Shielding plate; 22. Circuit board; 23. Coil; 24. Sensor;

[0043] 3. Carrier; 31. Fixed groove; 32. First limiting block; 33. First chute; 34. First through hole; 35. First installation groove; 36. Strip-shaped protrusion; 37. Limiting step; 38. Second limiting block;

[0044] 4. Magnet assembly;

[0045] 5. Housing; 51. First fixing hole; 52. Second fixing hole; 53. Limiting hole; 54. Second through hole; 55. Strip-shaped hole;

[0046] 6. Shock absorber; 61. First shock-absorbing part; 62. Second shock-absorbing part; 63. Connecting part;

[0047] 7. Outer shell; 71. Third through hole;

[0048] 8. Guide part. Detailed implementation manners

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0050] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first feature and the second feature, or may include the situation where the first feature and the second feature are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above and to the right", and "above and to the left" of the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "below and to the right", and "below and to the left" of the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of the present invention, the orientation or positional relationship such as "above", "below", "left", and "right" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0053] This embodiment provides a driving device, which can be applied to a camera module or other devices to solve the problem that in the prior art, the driving device has poor shock absorption and noise reduction capabilities due to the impact and noise generated by the movement of the carrier.

[0054] As Figures 1 to 9As shown in the figure, the driving device provided in this embodiment includes a base 1, a housing 7, a carrier 3, a driving element, a cover 5, and a shock absorber 6. The housing 7 is connected to the base 1, and an accommodating space is formed between the housing 7 and the base 1; the carrier 3 is disposed in the accommodating space; the driving element is connected between the carrier 3 and the base 1 and is configured to drive the carrier 3 to move relative to the base 1 in a first direction; the cover 5 is disposed on the carrier 3, and the cover 5 is provided with an open structure for avoiding the driving element; the shock absorber 6 is connected to the cover 5, and there is a gap between the shock absorber 6 and the housing 7. The shock absorber 6 includes a first shock-absorbing portion 61 and a second shock-absorbing portion 62. The first shock-absorbing portion 61 protrudes from the top of the cover 5, and the second shock-absorbing portion 62 protrudes from the side of the cover 5. In this embodiment, the base 1 serves as the fixing portion of the driving device, and the carrier 3 serves as the actuating portion of the driving device. The driving element can drive the carrier 3 to move relative to the base 1 in the first direction. Exemplarily, when the driving device is applied to a camera module, the first direction is the optical axis direction of the lens assembly. At this time, the carrier 3 can drive the lens assembly to reciprocate along its optical axis direction to achieve the focusing and defocusing functions.

[0055] In this embodiment, the first shock-absorbing portion 61 of the shock absorber 6 protrudes from the top of the cover 5, which can buffer the impact force between the top of the carrier 3 and the housing 7 during the movement process; the second shock-absorbing portion 62 protrudes from the side of the cover 5, which can buffer the impact force between the side of the carrier 3 and the housing 7 during the movement process. The entire shock absorber 6 can absorb the noise generated by the impact during the movement of the carrier 3, reduce vibration, and improve the shock absorption and noise reduction performance of the driving device. In this embodiment, the shock absorber 6 is made of an elastic material, such as silicone, rubber, or resin, etc., so as to better absorb the impact force generated by vibration and protect the driving device from the influence of vibration. Optionally, the number of shock absorbers 6 in this embodiment is set to be multiple, and the multiple shock absorbers 6 are symmetrically distributed on the opposite sides of the carrier 3. In addition, the shock absorber 6 can also be disposed on the front side of the carrier 3.

[0056] In this embodiment, the shock absorber 6 further includes a connecting portion 63, and the first shock-absorbing portion 61 and the second shock-absorbing portion 62 are connected through the connecting portion 63. Specifically, the connecting portion 63 is L-shaped and is respectively fixed in contact with the top of the carrier 3 and the side of the carrier 3. Preferably, the first shock-absorbing portion 61, the second shock-absorbing portion 62, and the connecting portion 63 are of an integral structure. Further, a first fixing hole 51 is provided on the top of the cover 5, and the first shock-absorbing portion 61 is fixed in the first fixing hole 51; a second fixing hole 52 is provided on the side of the cover 5, and the second shock-absorbing portion 62 is fixed in the second fixing hole 52; a fixing groove 31 is provided at the junction of the top and the side of the carrier 3, and the connecting portion 63 is fixed in the fixing groove 31. Specifically, the above-mentioned fixing methods can be snap connection, bonding, integral injection molding, etc., as long as the reliable fixing of the shock absorber 6 can be achieved.

[0057] Preferably, the radial dimension of the part of the first shock-absorbing portion 61 above the top surface of the housing 5 is greater than or equal to the dimension of the first fixing hole 51; the radial dimension of the part of the second shock-absorbing portion 62 above the side surface of the housing 5 is greater than or equal to the dimension of the second fixing hole 52. With such a setting, the connection between the shock-absorbing member 6 and the housing 5 is more stable and reliable, effectively avoiding the loosening of the shock-absorbing member 6 from the housing 5.

[0058] Further, a plurality of first limiting blocks 32 protrude from the top surface and the side surface of the carrier 3. A plurality of limiting holes 53 corresponding to the positions of the first limiting blocks 32 are provided on the housing 5. Each first limiting block 32 passes through the corresponding limiting hole 53 and protrudes outside the housing 5. In this embodiment, by providing the first limiting blocks 32, the movement of the carrier 3 can be limited and buffered, avoiding the carrier 3 from hitting and damaging the outer shell 7 due to an excessive movement stroke; the first limiting blocks 32 are fixed through the limiting holes 53, increasing the connection reliability between the carrier 3 and the housing 5. Further, the height of the first shock-absorbing portion 61 and the second shock-absorbing portion 62 protruding from the housing 5 is greater than the height of the first limiting blocks 32 protruding from the housing 5. In this way, when the carrier 3 moves inside the outer shell 7, the first shock-absorbing portion 61 and the second shock-absorbing portion 62 can first buffer and shock-absorb with the outer shell 7, effectively reducing the noise generated by the movement and collision of the carrier 3. In this embodiment, the radial dimension of the part of the first limiting block 32 above the housing 5 is greater than or equal to the dimension of the limiting hole 53, further increasing the connection firmness between the carrier 3 and the housing 5 and preventing the housing 5 from loosening from the carrier 3. In addition, a plurality of second limiting blocks 38 can also be provided at the bottom of the carrier 3 to reduce the impact between the carrier 3 and the base 1. In addition, a strip-shaped protrusion 36 is provided at the junction of the top and the front side of the carrier 3. A strip-shaped hole 55 is provided at the corresponding position on the housing 5. The strip-shaped protrusion 36 can pass through the strip-shaped hole 55 and be fixedly connected to the strip-shaped hole 55, further increasing the connection stability between the housing 5 and the carrier 3.

[0059] In this embodiment, the material of the carrier 3 is plastic, and the shock-absorbing member 6 can be fixed to the housing 5 and the carrier 3 through a two-step molding process. The first molding process is: the shock-absorbing member 6 is integrally molded with the housing 5 by an injection molding process with the housing 5 as an insert to form a combined body; the second molding process is: the carrier 3 is integrally molded with the combined body of the shock-absorbing member 6 and the housing 5 by an injection molding process. With the above setting, the shock-absorbing member 6, the housing 5, and the carrier 3 are processed into an integral structure, making the fixing of the shock-absorbing member 6 more secure and the structure more stable, avoiding shaking between the shock-absorbing member 6, the housing 5, and the carrier 3, and being beneficial to further reducing the noise of the driving device.

[0060] Optionally, the base 1 includes a bottom plate 11, and a support wall 12 is arranged on the bottom plate 11. The support wall 12 is located on one side of the bottom plate 11; the driving element is connected between the support wall 12 and the carrier 3. In this embodiment, the bottom plate 11 and the support wall 12 can be an integral structure or a split structure; when adopting the split structure, the support wall 12 can be fixed on the bottom plate 11 by means of bonding, screwing, clamping, etc. Further, the support wall 12 of this embodiment is arranged perpendicular to the bottom plate 11.

[0061] In this embodiment, the carrier 3 is slidably connected to the support wall 12. Specifically, a first sliding groove 33 is arranged on one side of the carrier 3 opposite to the support wall 12, and a second sliding groove 121 is arranged on one side of the support wall 12 opposite to the carrier 3. Both the first sliding groove 33 and the second sliding groove 121 extend along the first direction, and a guiding member 8 is installed between the first sliding groove 33 and the second sliding groove 121, so that the carrier 3 can slide relative to the base 1 along the first direction. The above arrangement increases the smoothness and running accuracy of the carrier 3 moving along the first direction. Specifically, the guiding member 8 can be a number of balls or a guiding column extending along the first direction, both of which can play a good guiding role. Preferably, balls are used for guiding in this embodiment.

[0062] Further, a first installation groove 35 is arranged on one side of the carrier 3 close to the support wall 12, and a second installation groove 122 is arranged on the support wall 12. The driving device of this embodiment can be driven by a voice coil motor, piezoelectric material or other means. Preferably, the voice coil motor is adopted to realize the driving in this embodiment. Specifically, the driving element includes a coil assembly 2 and a magnet assembly 4. The magnet assembly 4 is installed in the first installation groove 35, and the coil assembly 2 is installed in the second installation groove 122, and the coil assembly 2 and the magnet assembly 4 are arranged opposite to each other.

[0063] Optionally, the coil assembly 2 includes a shielding plate 21, a circuit board 22, a coil 23 and a sensor 24. The shielding plate 21, the circuit board 22 and the coil 23 are sequentially installed in the second installation groove 122 of the support wall 12 from far away from the magnet assembly 4 to close to the magnet assembly 4; the sensor 24 is connected to the circuit board 22, and the sensor 24 is used for sensing the change of the magnetic field. The circuit board 22 of this embodiment can be a flexible circuit board, a rigid circuit board or a combination of flexible and rigid circuit boards; when the circuit board is a flexible circuit board, a reinforcing plate can also be arranged to increase the strength of the flexible circuit board. Optionally, the magnet assembly 4 of this embodiment includes a number of magnets combined together, and each magnet is installed in the first installation groove 35.

[0064] In this embodiment, the housing 5 covers the carrier 3, and its bottom is open to facilitate processing and assembly. At the same time, the side of the housing 5 facing the support wall 12 is also open to avoid blocking the magnet assembly 4. The material of the housing 5 is metal, which can play a role in dissipating heat from the driving device. Specifically, the material of the housing 5 can be iron, stainless steel, etc. Further, a limiting step 37 adapted to the contour edge of the open end of the housing 5 is provided on the side and top surfaces of the carrier 3, so that the housing 5 can be well limited and the carrier 3 and the housing 5 can be better joined and fixed.

[0065] In this embodiment, the outer shell 7 is buckled above the base 1, and the coil assembly 2, the carrier 3, the magnet assembly 4, the housing 5 and the shock absorber 6 are all accommodated in the accommodation space between the outer shell 7 and the base 1, so that the outer shell 7 can form a good protection for the internal components. Preferably, the material of the outer shell 7 is metal, and the shape of the outer shell 7 is a quadrilateral shell with an open bottom end. Specifically, the outer shell 7 can be formed by punching and bending a metal material, and then laser welding is used on the four closed sides.

[0066] To facilitate the application of this driving device in a camera device, a first through hole 34 is also provided on the carrier 3 for installing a lens assembly. At the same time, a second through hole 54 is provided on the housing 5, a third through hole 71 is provided on the outer shell 7, and a fourth through hole 111 is provided on the bottom plate 11. The second through hole 54, the third through hole 71, the fourth through hole 111 and the first through hole 34 are coaxially arranged for the lens assembly to pass through. With such a setting, when the focal length of the lens assembly needs to be adjusted, the carrier 3 can be driven by a driving element, so that the carrier 3 drives the lens assembly to reciprocate along the optical axis direction relative to the base 1, thereby realizing focusing.

[0067] This embodiment also provides a camera module, including a lens assembly and the above-mentioned driving device. The lens assembly is installed in the carrier 3 of the driving device, and the driving device is used to drive the lens assembly to move in a first direction, and the first direction is specifically the optical axis direction of the lens assembly. Since this camera module adopts all the technical solutions of all the above-mentioned embodiments of the driving device, this camera module at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0068] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A driving device, characterized in that: include: Base; A housing connected to the base, wherein a containing space is formed between the housing and the base; A carrier is disposed in the accommodating space; a driving element, connected between the carrier and the base, and configured to drive the carrier to move relative to the base in a first direction; A cover shell is disposed on the carrier, and the cover shell is provided with an open structure for avoiding the driving element; The shock absorbing member is connected to the cover shell, and the shock absorbing member includes a first shock absorbing portion and a second shock absorbing portion, wherein the first shock absorbing portion protrudes from the top of the cover shell, and the second shock absorbing portion protrudes from the side of the cover shell.

2. The driving device according to claim 1, characterized in that: The shock absorbing member further comprises a connecting portion, through which the first shock absorbing portion and the second shock absorbing portion are connected; the connecting portion is L-shaped and is respectively fitted and fixed to the top of the carrier and the side of the carrier.

3. The driving device according to claim 2, characterized in that: A first fixing hole is provided on the top of the cover shell, and the first shock absorbing part is fixed to the first fixing hole; a second fixing hole is provided on the side of the cover shell, and the second shock absorbing part is fixed to the second fixing hole; a fixing groove is provided at the intersection of the top and the side of the carrier, and the connecting part is fixed in the fixing groove.

4. The driving device according to claim 3, characterized in that: The radial dimension of the portion of the first shock absorbing portion that is higher than the top surface of the housing is greater than or equal to the dimension of the first fixing hole; and / or, The radial dimension of the portion of the second shock-absorbing portion protruding from the side surface of the housing is greater than or equal to the dimension of the second fixing hole.

5. The driving device according to claim 1, characterized in that: A plurality of first limiting blocks are protruding from the top and side of the carrier, a plurality of limiting holes corresponding to the positions of the first limiting blocks are provided on the cover shell, and the first limiting blocks pass through the corresponding limiting holes and protrude from the cover shell; and / or, A second limiting block is arranged at the bottom of the carrier.

6. The driving device according to claim 5, characterized in that: The heights of the first shock absorbing portion and the second shock absorbing portion protruding from the housing are greater than the height of the first limiting block protruding from the housing.

7. The driving device according to claim 1, characterized in that: The material of the housing is metal; the material of the shock absorber is silicone, rubber or resin; the material of the carrier is plastic; and / or, There are multiple shock absorbing components, and the multiple shock absorbing components are distributed on the carrier at intervals.

8. The driving device according to claim 7, characterized in that: The shock absorbing component is formed into a combined body by an injection molding process with the cover shell as an insert, and the carrier is formed into a combined body by an injection molding process.

9. The driving device according to claim 1, characterized in that: The base comprises a bottom plate, a supporting wall is arranged on the bottom plate, and the supporting wall is located at one side of the bottom plate; the driving element is connected between the supporting wall and the carrier.

10. The driving device according to claim 9, characterized in that: A first slide groove is provided on a side of the carrier opposite to the support wall, a second slide groove is provided on a side of the support wall opposite to the carrier, and a guide is installed between the first slide groove and the second slide groove to enable the carrier to be slidably connected to the base; and / or, A first mounting groove is provided on a side of the carrier opposite to the support wall, and a second mounting groove is provided on a side of the support wall opposite to the carrier; the driving element includes a coil assembly and a magnet assembly, the magnet assembly is installed in the first mounting groove, and the coil assembly is installed in the second mounting groove; the coil assembly includes a shielding plate, a circuit board, a coil and a sensor, the shielding plate, the circuit board and the coil are installed on the support wall in sequence from away from the magnet assembly to close to the magnet assembly, and the sensor is connected to the circuit board.

11. The driving device according to claim 9, characterized in that: The carrier is provided with a first through hole, and the first through hole is used to install the lens assembly; the cover shell is provided with a second through hole, the outer shell is provided with a third through hole, and the bottom plate is provided with a fourth through hole, and the second through hole, the third through hole, and the fourth through hole are coaxially arranged with the first through hole for allowing the lens assembly to pass through.

12. A camera module, characterized in that: It comprises a lens assembly and a driving device as described in any one of claims 1-11, wherein the lens assembly is installed in a carrier of the driving device, and the driving device is used to drive the lens assembly to move along a first direction, and the first direction is the optical axis direction of the lens assembly.

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