Camera driving device, camera module and electronic device

Abstract

The application discloses a camera driving device, a camera module and electronic equipment. The camera driving device comprises a shell structure, a carrier structure and an electromagnetic driving assembly arranged in the shell structure. The electromagnetic driving assembly comprises a guide piece extending along a first direction, two ends of the guide piece being connected to a top wall and a bottom plate of the shell structure respectively; a magnetic piece; a coil structure corresponding to the magnetic piece, one of the coil structure or the magnetic piece being fixedly connected to a side wall of the carrier structure and being slidingly connected to an outer peripheral surface of the guide piece, the other being fixed to the guide piece and being spaced from the top wall and the bottom plate; a magnetic conducting piece connected to the coil structure; wherein, in the first direction, lengths of the magnetic conducting piece are all less than a length of the guide piece, and a length of the magnetic piece is less than the length of the magnetic conducting piece. The camera driving device, the camera module and the electronic equipment can reduce internal noise of the camera driving device and ensure user experience.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electronic equipment, and particularly relates to a camera driving device, a camera module and electronic equipment. BACKGROUND

[0002] In the focusing process of the camera of the electronic equipment, the slide rod motor usually needs to bear the camera, and the carrier drives the camera to move along the extension direction of the slide rod of the slide rod motor. Since the slide rod is relatively smooth, the camera carrier continues to move along the slide rod in the state that the slide rod motor is not powered on, so as to generate the noise of impacting the motor shell.

[0003] At present, in order to solve the problem of impact noise, a flexible piece or the like is usually arranged on the inner wall of the shell, but the camera carrier still impacts the flexible piece and generates certain noise, which affects the user experience. SUMMARY

[0004] The application provides a camera driving device, a camera module and electronic equipment, which can reduce the internal noise of the camera driving device and ensure the user experience.

[0005] The application provides a camera driving device, which comprises a shell structure, a carrier structure arranged in the shell structure and an electromagnetic driving assembly. The electromagnetic driving assembly comprises a guide piece, a magnetic piece and a coil structure. The guide piece extends in a first direction and is connected to the top wall and the bottom plate of the shell structure at both ends. The coil structure is arranged corresponding to the magnetic piece. One of the coil structure and the magnetic piece is fixedly connected to the side wall of the carrier structure and is slidingly connected to the outer peripheral surface of the guide piece, and the other is fixed to the guide piece and is spaced apart from the top wall and the bottom plate. A magnetic conducting piece is connected to the coil structure. In the first direction, the length of the magnetic conducting piece is less than the length of the guide piece, and the length of the magnetic piece is less than the length of the magnetic conducting piece.

[0006] The camera driving device as above, wherein, in the first direction, the magnetic piece is fixedly connected to the carrier structure, the guide piece is sleeved on the outer peripheral surface of the magnetic conducting piece, and the position of the magnetic conducting piece in the first direction is within the length range of the guide piece.

[0007] The camera driving device as above, wherein the guide piece, the magnetic piece and the coil structure are all hollow tubular structures. The magnetic piece is fixed to the side wall of the carrier structure, the magnetic piece is slidingly sleeved on the outer peripheral surface of the guide piece, and the coil structure is arranged in the guide piece.

[0008] The camera driving device as above, wherein, in the first direction, the length of the coil structure is equal to the length of the guide piece, and the guide piece is sleeved on the outer peripheral surface of the coil structure.

[0009] The camera driving device as claimed in the preceding paragraph, wherein the magnetic conducting member is in a columnar structure, and the coil structure is sleeved on the outer circumferential surface of the magnetic conducting member and fixedly connected with the magnetic conducting member.

[0010] The camera driving device as claimed in the preceding paragraph, wherein the coil structure is sleeved on the outer circumferential surface of the magnetic conducting member, the magnetic conducting member is slidingly installed on the guide member, and the coil structure is fixed on the side wall of the carrier structure, and the magnetic member is fixed on the guide member.

[0011] The camera driving device as claimed in the preceding paragraph, wherein the guide member, the coil structure and the magnetic conducting member are all in a hollow tubular structure, and in the first direction, the length of the coil structure is less than the length of the guide member, the magnetic conducting member is sleeved on the outer circumferential surface of the guide member in a sliding manner, and the magnetic member is fixedly arranged in the guide member.

[0012] The camera driving device as claimed in the preceding paragraph, wherein the side wall of the carrier structure is provided with at least one recessed mounting portion, and the at least one mounting portion is arranged in one-to-one correspondence with the at least one electromagnetic driving assembly, the shape of each mounting portion is adapted to the shape of the magnetic member or the coil structure of the corresponding electromagnetic driving assembly, and the magnetic member or the coil structure is fixedly connected in the corresponding mounting portion.

[0013] In another aspect, the application further provides a camera module, which comprises the camera driving device as described above, and further comprises a camera, wherein the camera is mounted on the carrier structure of the camera driving device, and the carrier structure can drive the camera to move in the first direction.

[0014] In yet another aspect, the application further provides an electronic device, which comprises the camera module as described above.

[0015] The camera driving device of the application comprises a shell structure, a carrier structure arranged in the shell structure and at least one electromagnetic driving assembly, the electromagnetic driving assembly comprises a guide member, a magnetic member, a coil structure and a magnetic conducting member, wherein the guide member is connected to the top wall and the bottom plate of the shell structure at both ends respectively, can guide the up-and-down movement of the carrier structure in the shell structure in the first direction, the magnetic member and the coil structure are arranged correspondingly, and one of them is fixedly connected to the side wall of the carrier structure and slidingly connected to the outer circumferential surface of the guide member, when the coil structure is powered, the electromagnetic force is generated between the magnetic member and the coil structure and the relative movement occurs, the one fixedly connected to the carrier structure will drive the carrier structure to slide along the extension direction of the guide member, so that the carrier structure can drive the camera to move in the first direction, and the lifting focusing of the camera is realized.

[0016] The other of the magnetic piece and the coil structure is fixed to the guide piece, the magnetic piece and the magnetic conducting piece have mutual attractive magnetic field force when the coil structure is not electrified, the magnetic piece and the magnetic conducting piece are spaced apart from the top wall and the bottom plate of the shell structure and cannot contact the top wall and the bottom plate of the shell structure, the magnetic piece and the magnetic conducting piece move relatively in the first direction when the coil structure is electrified, dislocation is generated between the magnetic piece and the magnetic conducting piece, the magnetic piece and the magnetic conducting piece have strong attractive force under the strong magnetic conducting effect of the magnetic conducting piece, the length of the magnetic conducting piece is less than the length of the guide piece, and the length of the magnetic piece is less than the length of the magnetic conducting piece, the magnetic conducting piece prevents the magnetic piece or the coil structure from continuing to drive the carrier structure to move towards the top wall and the bottom plate after the dislocation is generated, thereby avoiding the carrier structure from colliding with the top wall and the bottom plate of the shell structure, reducing the internal noise of the camera driving device, and ensuring the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced, and other drawings can be obtained by those of ordinary skill in the art without creative labor on the premise that the drawings are not creative labor.

[0018] Figure 1 It is an exploded view of the camera driving device of the embodiments of the present application.

[0019] Figure 2 It is a sectional view of the camera driving device of the embodiments of the present application.

[0020] Figure 3 It is an assembly schematic view of the guide piece and the coil structure of the camera driving device of the embodiments of the present application.

[0021] Figure 4 It is an assembly schematic view of the magnetic piece and the carrier structure of the camera driving device of the embodiments of the present application.

[0022] Figure 5 It is a sectional view of the second camera driving device of the embodiments of the present application.

[0023] Figure 6 It is a sectional view of the third camera driving device of the embodiments of the present application.

[0024] Explanation of the drawings:

[0025] 10, guide piece; 20, magnetic piece; 30, coil structure; 40, magnetic conducting piece;

[0026] 100, shell structure; 110, top wall; 120, bottom plate; 121, welding leg; 200, carrier structure; 210, side wall; 220, mounting portion; 300, electromagnetic driving assembly;

[0027] X, the first direction. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present application will be described below in detail, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0029] As Figures 1 to 6 shown, the present application provides a camera driving device, which comprises a shell structure 100, a carrier structure 200 and at least one electromagnetic driving assembly 300 arranged in the shell structure 100. The electromagnetic driving assembly 300 comprises a guide 10 extending along a first direction X, two ends of the guide 10 being connected to a top wall 110 and a bottom plate 120 of the shell structure 100 respectively; a magnetic piece 20; a coil structure 30 corresponding to the magnetic piece 20, one of the coil structure 30 or the magnetic piece 20 being fixedly connected to a side wall 210 of the carrier structure 200 and slidingly connected to an outer peripheral surface of the guide 10, the other being fixed to a middle part of the guide 10; a magnetic conducting piece 40 fixedly connected to the coil structure 30; wherein, in the first direction X, the length of the magnetic conducting piece 40 is less than the length of the guide 10, and the length of the magnetic piece 20 is less than the length of the magnetic conducting piece 40.

[0030] It should be noted that the first direction X is the vertical direction in Figure 2 When the camera driving device is installed in an electronic device, the first direction X is the thickness direction of the electronic device, i.e. the moving direction of the camera focusing process.

[0031] In specific implementation, the camera driving device of the present application comprises a shell structure 100, a carrier structure 200 and at least one electromagnetic driving assembly 300 arranged in the shell structure 100. The electromagnetic driving assembly 300 comprises a guide 10, a magnetic piece 20, a coil structure 30 and a magnetic conducting piece 40. The guide 10 is connected to the top wall 110 and the bottom plate 120 of the shell structure 100 at both ends, respectively, and can guide the up-and-down movement of the carrier structure 200 in the shell structure 100 along the first direction X. The magnetic piece 20 and the coil structure 30 are arranged correspondingly, and one of them is fixedly connected to the side wall 210 of the carrier structure 200 and is slidingly connected to the outer circumferential surface of the guide 10. When the coil structure 30 is energized, the electromagnetic force is generated between the magnetic piece 20 and the coil structure 30 and the relative movement occurs. The one fixed to the carrier structure 200 can drive the carrier structure 200 to slide along the extension direction of the guide 10, so that the carrier structure 200 can drive the camera to move along the first direction X, and the lifting focusing of the camera is realized.

[0032] The other of the magnetic piece 20 and the coil structure 30 is fixed to the middle part of the guide 10. When the coil structure 30 is not energized, the magnetic field force of mutual attraction is generated between the magnetic piece 20 and the magnetic conducting piece 40. Since the magnetic piece 20 and the magnetic conducting piece 40 are spaced apart from the top wall 110 and the bottom plate 120 of the shell structure 100, they will not be in contact with the top wall 110 and the bottom plate 120. When the coil structure 30 is energized, the relative movement along the first direction X occurs between the magnetic piece 20 and the magnetic conducting piece 40, and the dislocation is generated between them. Under the strong magnetic conducting effect of the magnetic conducting piece 40, the strong attractive force is generated between the magnetic piece 20 and the magnetic conducting piece 40. Since the length of the magnetic conducting piece 40 is less than the length of the guide 10, and the length of the magnetic piece 20 is less than the length of the magnetic conducting piece 40, after the dislocation is generated, the magnetic conducting piece 40 prevents the magnetic piece 20 or the coil structure 30 from continuously driving the carrier structure 200 to move towards the top wall 110 and the bottom plate 120, so that the carrier structure 200 can be kept at the position close to the middle part in the shell structure 100, thereby avoiding the carrier structure 200 from colliding with the top wall 110 and the bottom plate 120 of the shell structure 100, reducing the internal noise of the camera driving device, and ensuring the user experience.

[0033] Specifically, as shown in Figure 1 The center positions of the top wall 110 and the bottom plate 120 of the shell structure 100 are provided with through holes for the camera to pass through, so that the camera can pass through the through holes to perform the shooting operation in the process of the carrier structure 200 carrying the camera moving along the first direction X.

[0034] Specifically, the magnetic conducting piece 40 is made of a metal material with strong magnetic conducting properties, which includes but is not limited to pure iron, silicon steel or low-carbon steel and the like.

[0035] As shown in Figures 1 to 4As shown, the camera driving device of the embodiment of the present application, wherein the guide member 10, the magnetic member 20 and the coil structure 30 are all tubular structures with a hollow interior, the magnetic member 20 is fixed to the side wall 210 of the carrier structure 200, the magnetic member 20 can be slidably mounted on the outer peripheral surface of the guide member 10, and the coil structure 30 is arranged inside the guide member 10. The sleeve arrangement between the magnetic member 20, the guide member 10 and the coil structure 30 can not only ensure the relative sliding between the magnetic member 20 and the guide member 10, but also reduce the space occupied by the entire electromagnetic driving assembly 300 in the camera driving device.

[0036] In specific implementation, in an embodiment of the present application, the magnetic part 20 is fixed to the side wall 210 of the carrier structure 200, the guide part 10, the magnetic part 20 and the coil structure 30 are all tubular structures with hollow interiors, the outer surface of the magnetic part 20 is fixedly connected to the carrier structure 200, and the magnetic part 20 can be slidably mounted on the outer peripheral surface of the guide part 10, that is, the inner surface of the magnetic part 20 is slidably connected to the outer surface of the guide part 10, and the coil structure 30 is arranged inside the guide part 10. After the coil structure 30 is energized, an interactive magnetic force is generated between the coil structure 30 and the magnetic part 20. Since the coil structure 30 is fixed in the guide part 10, the magnetic part 20 can drive the carrier structure 200 to slide along the extension direction of the guide part 10, thereby realizing the up and down movement of the carrier structure 200 along the first direction X.

[0037] like Figure 2 As shown, the camera driving device of an embodiment of the present application, wherein the magnetic part 20 is fixedly connected to the carrier structure 200, the guide part 10 is sleeved on the outer peripheral surface of the magnetic conductive part 40, and the position of the magnetic conductive part 40 in the first direction X is within the length range of the guide part 10, that is, the magnetic conductive part 40 will not protrude from both ends of the guide part 10.

[0038] In a specific implementation, the magnetic member 20 is fixed to the carrier structure 200 so that the magnetic member 20 can drive the carrier structure 200 to move along the first direction X under the electromagnetic force of the coil structure 30. If the current in the coil structure 30 is too large, resulting in a large electromagnetic force on the magnetic member 20, the magnetic member 20 will cause the carrier structure 200 to move a long distance. The guide member 10 is mounted on the outer peripheral surface of the magnetic conductive member 40. After the magnetic member 20 moves beyond the range of the magnetic conductive member 40, the magnetic field generated by the magnetic conductive member 40 can attract the magnetic member 20 and the carrier structure 200 to a position opposite to it. Because the position of the magnetic conductive member 40 in the first direction X is within the length range of the guide member 10, the magnetic member 20 will not drive the carrier structure 200 beyond the length range of the guide member 10 due to the limiting effect of the magnetic conductive member 40. The carrier structure 200 will not collide with the top wall 110 and the bottom plate 120, thereby reducing the internal noise of the camera driving device.

[0039] Moreover, in the first direction X, the length of the magnetic piece 20 is less than the length of the magnetic conducting piece 40, so that after a small displacement between the magnetic piece 20 and the magnetic conducting piece 40, the magnetic conducting piece 40 is more likely to attract the magnetic piece 20 back to the position close to the middle due to the overall shorter length of the magnetic piece 20, and the displacement length is in a larger proportion to the overall length of the magnetic piece 20, thereby avoiding the situation that the magnetic piece 20 and the carrier structure 200 are separated from the magnetic force of the magnetic conducting piece 40, and cannot be returned to the middle position.

[0040] As shown in Figure 2 the camera driving device of the embodiment of the present application, wherein in the first direction X, the length of the coil structure 30 is equal to the length of the guide piece 10, and the guide piece 10 is sleeved on the outer peripheral surface of the coil structure 30.

[0041] In specific implementation, the coil structure 30 is arranged as a columnar structure with a length equal to that of the guide piece 10, so that the coil structure 30 has sufficient volume, and when the coil structure 30 is energized, it can generate sufficient electromagnetic force on the magnetic piece 20 to drive the magnetic piece 20 and the carrier structure 200 to move freely along the first direction X, thereby realizing different focusing effects of the camera. Moreover, the internal energized current direction of the coil structure 30 is different, which can drive the magnetic piece 20 to slide in opposite directions in the first direction X.

[0042] Specifically, the guide piece 10 is a metal structure, which has a supporting effect on the coil structure 30. In the radial direction of the guide piece 10, the thickness of the guide piece 10 is less than the thickness of the coil structure 30, which provides arrangement space for the fixation of the coil structure 30, and the guide piece 10 occupies a smaller volume inside the housing structure 100, thereby realizing the light weight and miniaturization of the camera driving device.

[0043] Optionally, the length of the coil structure 30 can be slightly less than the length of the guide piece 10, which can ensure the driving effect of the coil structure 30 on the magnetic piece 20.

[0044] As shown in Figure 2 the camera driving device of the embodiment of the present application, wherein the magnetic conducting piece 40 is a columnar structure, and the coil structure 30 is sleeved on the outer peripheral surface of the magnetic conducting piece 40 and fixedly connected with the magnetic conducting piece 40.

[0045] In particular implementation, the magnetic guide 40 is a columnar structure fixed inside the coil structure 30. The columnar structure ensures that the magnetic guide 40 has sufficient length in the first direction X and has sufficient volume, so as to ensure the strong magnetic guide effect of the magnetic guide 40, so that the magnetic guide 40 has sufficient attraction to the magnetic element 20, avoiding the carrier structure 200 connected to the magnetic element 20 from colliding with the top wall 110 and the bottom plate 120. Moreover, the columnar structure of the magnetic guide 40 is convenient to fix, which is arranged inside the tubular coil structure 30, reducing the overall volume of the electromagnetic drive assembly 300, and there is no need to arrange additional space for the magnetic guide 40. The sleeving arrangement of multiple parts makes the maximum diameter of the electromagnetic drive assembly 300 as a whole equal to the diameter of the magnetic element 20, realizing the light weight and miniaturization of the camera driving device.

[0046] In particular, the magnetic guide 40 is a uniform columnar structure, and the magnetic element 20 and the coil structure 30 are also uniform tubular structures, so as to ensure the stability of the driving of the magnetic element 20 by the coil structure 30 through electromagnetic force, and also ensure the stability of the driving of the magnetic element 20 by the magnetic guide 40 through magnetic force.

[0047] In particular, the fixing between the magnetic element 20 and the carrier structure 200, the fixing between the magnetic guide 40 and the coil structure 30, and the fixing between the coil structure 30 and the guide 10 are all fixed by the glue dispensing mode. Such a process mode can ensure the stability of the connection between each other, and the process is simple, reducing the process steps.

[0048] As shown in Figure 5 , the camera driving device of the second embodiment of the present application, wherein the magnetic guide 40 is a tubular structure with an internal cavity, and the guide 10 is sleeved on the outer peripheral surface of the magnetic guide 40 and fixedly connected with the magnetic guide 40.

[0049] In particular implementation, the magnetic guide 40 is fixed inside the guide 10 and fixed to the middle part of the guide 10 in the first direction X. Therefore, the guide 10 provides a fixing basis for the magnetic guide 40. When the magnetic element 20 is driven by the electromagnetic force generated by the coil structure 30, if the magnetic element 20 is misaligned between the magnetic guide 40 in the first direction X, the magnetic field force between the magnetic guide 40 and the magnetic element 20 can attract the magnetic element 20 back to the position close to the middle part, avoiding the magnetic element 20 from driving the carrier structure 200 to collide with the top wall 110 and the bottom plate 120, thereby reducing the internal noise of the camera driving device.

[0050] As shown in Figure 5 , the camera driving device of the second embodiment of the present application, wherein the length of the coil structure 30 is less than the length of the guide 10 in the first direction X, and the magnetic guide 40 is sleeved on the outer peripheral surface of the coil structure 30 and slidably connected with the coil structure 30.

[0051] In actual implementation, the length of the coil structure 30 is less than the length of the guide member 10, so the overall volume of the coil structure 30 is small, the setting cost of the coil structure 30 is saved, and the coil structure 30 can be slidably arranged in the magnetic conducting member 40. The coil structure 30 can be driven to slide along the first direction X, so that when the coil structure 30 is energized, if the distance that the magnetic member 20 drives the carrier structure 200 to move is relatively long, the electromagnetic force between the magnetic member 20 and the coil structure 30 weakens, the coil structure 30 can slide along the first direction X to approach the magnetic member 20, and a relatively strong electromagnetic force is generated between the coil structure 30 and the magnetic member 20 again to continue to drive the magnetic member 20 and the carrier structure 200 to move along the first direction X, thereby completing the focusing action of the camera. In this way, by controlling the moving distance of the coil structure 30, the moving distance of the carrier structure 200 is accurately controlled. The driving member of the coil structure 30 includes but is not limited to an electric rod or an electrically induced deformation member, which can drive the coil structure 30 to slide along the first direction X.

[0052] In this embodiment, the magnetic member 20, the guide member 10, the magnetic conducting member 40, and the coil structure 30 can be sequentially sleeved, so that the maximum diameter of the electromagnetic driving assembly 300 is equal to the diameter of the magnetic member 20, thereby realizing the light weight and miniaturization of the camera driving device.

[0053] As shown in FIG. 3, Figure 6 In a third embodiment of the present application, the coil structure 30 of the camera driving device is a tubular structure fixed to the side wall 210 of the carrier structure 200, the coil structure 30 is sleeved on the outer circumferential surface of the guide member 10, the magnetic member 20 is arranged in the guide member 10 and fixed to the middle part of the guide member 10, and the magnetic conducting member 40 is fixedly connected with the coil structure 30. When the coil structure 30 is energized, the magnetic force between the coil structure 30 and the magnetic member 20 interacts, the coil structure 30 drives the carrier structure 200 and the magnetic conducting member 40 to slide along the extension direction of the guide member 10, so as to realize the up-down movement of the carrier structure 200 along the first direction X. When the magnetic conducting member 40 and the magnetic member 20 are dislocated along the first direction X, the magnetic member 20 generates a relatively strong magnetic force on the magnetic conducting member 40, so as to prevent the magnetic conducting member 40 and the carrier structure 200 connected therewith from continuing to move away from the magnetic member 20, thereby avoiding the carrier structure 200 from colliding with the top wall 110 and the bottom plate 120 of the shell structure 100, and reducing the internal noise of the camera driving device.

[0054] As shown in FIG. 3, Figure 4As shown, the camera driving device of the embodiment of the present application, wherein the side wall 210 of the carrier structure 200 has at least one recessed mounting portion 220, and the at least one mounting portion 220 is arranged one-to-one with the at least one electromagnetic driving assembly 300, the shape of each mounting portion 220 is adapted to the shape of the magnetic piece 20 or the coil structure 30 of the corresponding electromagnetic driving assembly 300, and the magnetic piece 20 or the coil structure 30 is fixedly connected in the corresponding mounting portion 220.

[0055] In particular implementation, the shape of the outer circumferential surface of the magnetic piece 20 or the coil structure 30 is adapted to the shape of the surface of the mounting portion 220, and when fixed by the dispensing process, the magnetic piece 20 or the coil structure 30 can be completely attached to the mounting portion 220, so that the fixation between the magnetic piece 20 or the coil structure 30 and the mounting portion 220 is more stable, avoiding the situation that the magnetic piece 20 or the coil structure 30 drives the mounting portion 220 to move and fall off each other, and ensuring the focusing stability of the camera.

[0056] Specifically, the carrier structure 200 is a square structure, has four side walls 210 and four mounting portions 220, and the four mounting portions 220 are respectively arranged at the four corners of the carrier structure 200, i.e. at the included angles between the adjacent side walls 210 of the carrier structure 200, the inner surface of the mounting portion 220 is in a ring shape with an opening, the outer circumferential surface of the magnetic piece 20 is adapted to the inner surface of the mounting portion 220, so as to realize a stable connection effect, and the four corners of the carrier structure 200 are fixedly connected with the magnetic piece 20 of the electromagnetic driving assembly 300, further improving the connection stability of the electromagnetic driving assembly 300 and the carrier structure 200, and ensuring the stability of the carrier structure 200 carrying the camera for focusing.

[0057] Specifically, the edge of the bottom plate 120 of the shell structure 100 further has a soldering leg 121, the soldering leg 121 is connected with an external power supply, and can provide positive and negative voltages for the electromagnetic driving assembly 300 inside the shell structure 100, so as to energize the coil structure 30 to control the focusing action of the camera.

[0058] The embodiment of the present application also provides a camera module, which comprises the camera driving device described above, and further comprises a camera, the camera is mounted on the carrier structure 200 of the camera driving device, and the carrier structure 200 can drive the camera to move in the first direction X.

[0059] The embodiment of the present application also provides an electronic device, which comprises the camera module described above.

[0060] In specific implementation, the electronic device includes the camera module, the camera module includes the camera head driving device and the camera head, the camera head driving device includes the shell structure 100, the carrier structure 200 and at least one electromagnetic driving assembly 300 in the shell structure 100, the camera head is installed on the carrier structure 200 of the camera head driving device, the electromagnetic driving assembly 300 includes the guide 10, the magnetic piece 20, the coil structure 30 and the magnetic conducting piece 40, wherein the guide 10 is connected to the top wall 110 and the bottom plate 120 of the shell structure 100 at both ends respectively, can guide the up and down movement of the carrier structure 200 in the shell structure 100 along the first direction X, the magnetic piece 20 and the coil structure 30 are correspondingly arranged, and one of them is fixedly connected to the side wall 210 of the carrier structure 200 and is slidingly connected to the outer circumferential surface of the guide 10, when the coil structure 30 is powered, the electromagnetic force is generated between the magnetic piece 20 and the coil structure 30 and the relative movement occurs, the one fixed to the carrier structure 200 will drive the carrier structure 200 to slide along the extension direction of the guide 10, so that the carrier structure 200 can drive the camera head to move along the first direction X, and the lifting focusing of the camera head is realized.

[0061] The other one of the magnetic piece 20 and the coil structure 30 is fixed to the middle part of the guide 10, the magnetic piece 20 and the magnetic conducting piece 40 have the magnetic field force of mutual attraction between them when the coil structure 30 is not powered, since the magnetic piece 20 and the magnetic conducting piece 40 are both spaced from the top wall 110 and the bottom plate 120 of the shell structure 100, they will not be in contact with the top wall 110 and the bottom plate 120, when the coil structure 30 is powered, the magnetic piece 20 and the magnetic conducting piece 40 move relatively along the first direction X, the dislocation occurs between them, under the strong magnetic conducting effect of the magnetic conducting piece 40, the magnetic piece 20 and the magnetic conducting piece 40 have strong attractive force between them, since the length of the magnetic conducting piece 40 is less than the length of the guide 10, and the length of the magnetic piece 20 is less than the length of the magnetic conducting piece 40, after the dislocation occurs, the magnetic conducting piece 40 prevents the magnetic piece 20 or the coil structure 30 from continuing to drive the carrier structure 200 to move towards the top wall 110 and the bottom plate 120, so that the carrier structure 200 can be kept at the position close to the middle part in the shell structure 100, thereby avoiding the carrier structure 200 from colliding with the top wall 110 and the bottom plate 120 of the shell structure 100, reducing the internal noise of the camera head driving device, and ensuring the user experience.

[0062] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0063] The above description is merely illustrative of the application, and not restrictive. Various modifications can be made by those skilled in the art without departing from the scope of the application. Thus, it is intended that the scope of the application should be determined by the appended claims and their equivalents.

Claims

1. A camera driving apparatus, characterized by comprising: The application relates to a shell structure (100) and a carrier structure (200) and an electromagnetic driving assembly (300) arranged in the shell structure (100), wherein the electromagnetic driving assembly (300) comprises: a guide piece (10) extending along a first direction (X) and connected to a top wall (110) and a bottom plate (120) of the shell structure (100) respectively; a magnetic piece (20); a coil structure (30) arranged corresponding to the magnetic piece (20), one of the coil structure (30) and the magnetic piece (20) being fixedly connected to a side wall (210) of the carrier structure (200) and slidingly connected to an outer peripheral surface of the guide piece (10), and the other being fixed to the guide piece (10) and spaced from the top wall (110) and the bottom plate (120); a magnetic conductive piece (40) connected to the coil structure (30); wherein, in the first direction (X), the length of the magnetic conductive piece (40) is smaller than the length of the guide piece (10), and the length of the magnetic piece (20) is smaller than the length of the magnetic conductive piece (40).

2. The camera driving apparatus according to claim 1, wherein The magnetic piece (20) is fixedly connected to the carrier structure (200), the guide piece (10) is sleeved on the outer peripheral surface of the magnetic conductive piece (40), and the position of the magnetic conductive piece (40) in the first direction (X) is within the length range of the guide piece (10).

3. The camera driving apparatus according to claim 1, wherein The guide piece (10), the magnetic piece (20) and the coil structure (30) are all hollow tubular structures, the magnetic piece (20) is fixed to the side wall (210) of the carrier structure (200), the magnetic piece (20) is slidingly sleeved on the outer peripheral surface of the guide piece (10), and the coil structure (30) is arranged in the guide piece (10).

4. The camera driving apparatus according to claim 3, wherein In the first direction (X), the length of the coil structure (30) is equal to the length of the guide piece (10), and the guide piece (10) is sleeved on the outer peripheral surface of the coil structure (30).

5. The camera driving apparatus according to claim 4, wherein The magnetic conductive piece (40) is a columnar structure, the coil structure (30) is sleeved on the outer peripheral surface of the magnetic conductive piece (40) and fixedly connected to the magnetic conductive piece (40).

6. The camera driving apparatus according to claim 1, wherein The coil structure (30) is sleeved on the outer peripheral surface of the magnetic conductive piece (40), the magnetic conductive piece (40) is slidingly mounted on the guide piece (10), the coil structure (30) is fixed to the side wall (210) of the carrier structure (200), and the magnetic piece (20) is fixed to the guide piece (10).

7. The camera driving apparatus according to claim 6, wherein The guide piece (10), the coil structure (30) and the magnetic conductive piece (40) are all hollow tubular structures, in the first direction (X), the length of the coil structure (30) is smaller than the length of the guide piece (10), the magnetic conductive piece (40) is slidingly sleeved on the outer peripheral surface of the guide piece (10), and the magnetic piece (20) is fixedly arranged in the guide piece (10).

8. The camera driving apparatus according to claim 1, wherein The side wall (210) of the carrier structure (200) has at least one recessed mounting portion (220) arranged thereon, at least one mounting portion (220) is arranged in one-to-one correspondence with at least one electromagnetic drive assembly (300), the shape of each mounting portion (220) is adapted to the shape of the magnetic element (20) or the coil structure (30) of the corresponding electromagnetic drive assembly (300), and the magnetic element (20) or the coil structure (30) is fixedly connected in the corresponding mounting portion (220).

9. An image capture module, comprising: The camera module comprises the camera driving device as claimed in any one of claims 1 to 8, and further comprises a camera, which is mounted on the carrier structure (200) of the camera driving device, and the carrier structure (200) can drive the camera to move in the first direction (X).

10. An electronic device, comprising: The camera module comprises the camera module as claimed in claim 9.

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